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Home My WebLink AboutPermit PL10-003 - PHAN HAN PE - FOSTER SHORT PLATFOSTER SHORT PLAT LAND DEVELOPMENT LAND DIVISION 6 & 7 4419 S 144 ST PLI 0-003 L10-004 & E10-001 June 13, 2011 Mr. Han Phan 5130 S 166t Lane SeaTac, WA 98188 City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director NOTICE OF DECISION RE: Foster Short Plat L10-004 4419 S 144th Street (parcel #s 0040000375 and 0040000380) Dear Mr. Phan, The Short Subdivision Committee has completed review of your short plat application (No. L10-004), and determined that it complies with all applicable City code requirements. The City SEPA Responsible Official previously determined that this application will not have a probable significant adverse impact on the environment, and issued a Determination of Non -Significance (DNS) on August 20, 2010. This letter serves as the Notice of Decision per TMC 18.104.170. Based on the latest project submittal, preliminary approval is granted subject to the conditions stated below. There are three basic steps in the short plat approval process: (1) Preliminary Approval; (2) Final Approval; and (3) Recording. A description of each step in the short plat approval process is included below. 1. Preliminary Approval This letter constitutes your preliminary approval. The application was reviewed by the Tukwila Short Subdivision Committee and approved with conditions. The conditions imposed are to ensure the short plat is consistent with the Criteria for Preliminary Approval listed at TMC 17.12.020 C in the Tukwila Subdivision Code. PRELIMINARY APPROVAL CONDITIONS 1) Provide a draft copy of Private Tract `A' Access & Utilities Easement and Maintenance Agreement. (1) Document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. (2) The Private Tract `A' Access & Utilities Easement and Maintenance Agreement should include language stating who will maintain the paved area, storm drainage, and utilities, and by what portion. (See sample enclosed.) 2) Owner shall sign with Notary, a 15' Private Drainage Easement (within the Western portions of proposed Lots 8 & 9; for the benefit of proposed Lots 7, 8, & 9.) This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. (See sample enclosed.) 3) Owner shall sign with Notary, a 25' Private Drainage Easement (within the Southwest comer of proposed Lot 7; for the benefit of proposed Lot 6 & a portion of Tract `A') This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. 4) Owner shall sign with Notary, a Private Sidewalk & Utilities Easement (adjacent to the Tract 'A' outside perimeter); from proposed Lots 1 thru 9 for the benefit of proposed Lots 1 thru 9. This document shall be JR Page 1 of 4 06/01/2011 H:\Short Plats\Foster Short Plat\L10-004 Foster Short Plat - Preliminary Approval.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206- 431-3665 recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. Easements labeled #2 & #3 should be combined into one Easement. 5) Owner shall sign with Notary, a 10' Private Utilities Easement (within the North 10 feet of the proposed Lot 1, Tract 'A', and Lot 9; for the benefit of proposed Lots 1 thru 9). This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. 6) Owner shall sign with Notary, a Storm Water Easement and Maintenance Agreement. Public Works will prepare document. Allow at least ten (10) days for recording. (See sample enclosed.) 7) Addresses are assigned by the Tukwila Fire Department - contact the Fire Department prior to recording for addresses and street name. 8) Trees to be protected and removed are shown, along with tree protection measures, on Civil Plans Sheet 2 of 15. Prior to the start of work under the Public Works permit, a pre -construction meeting shall be held on site during which trees to be removed will be flagged and tree protection measures inspected. A tree clearing permit and tree replacement plan will be required for removal of any trees within steep slope areas. 9) Demolition permits shall be obtained for structures to be removed. Demolition of these structures shall be complete prior to final short plat approval. 10) All utilities including power are required to be underground, per City of Tukwila ordinance. 11) Revise the short plat survey, to be recorded with the King County Recorder's Office, to include the following information: a. Revise the survey to remove the structures shown as "To Be Demolished/Removed," which are required to be removed prior to final short plat approval. These structures include the existing garage located in the middle of Tract A, the shed located in Lot 8, and the deck on the east side of the existing house on Lot 1. b. Coordinate with civil plans and enclosed redlined survey to show all easements on the short plat survey, leaving a space on the map to add the recording number. c. Provide legal description of "Tract A" on short plat survey map. If the access and utilities will be within a tract, a detailed maintenance agreement will need to be developed and recorded, which outlines how the maintenance will be shared among property owners of this short plat. You could also change the access road and utilities within the road to be easements across lots in the development rather than a tract. d. Add the short plat name to all sheets of the survey. e. New legal descriptions for proposed Lots 1 thru 9 should include "SUBJECT TO ----", "SUBJECT TO AND TOGETHER WITH ", or "TOGETHER WITH "; reference (a) Tract 'A' Access & Utilities Easement (b) ANY - Sidewalk & Utilities Easement (c) ANY — Public (or) Private Drainage Easement. (as applicable) Miscellaneous Comments 1) Turnover documents will be required for the new Public sidewalk, street light, and a catch basin within S. 144th Street Right -of -Way or Public Easement. Provide cost(s) for each item to be turned over. City will prepare documents for Owner's signature. 2) Portion of new sidewalk and Public Street Light is on private property and will require a Public Sidewalk & Street Light Easement. City will prepare Public Sidewalk & Street Light Easement for Owner's signature. 3) Pavement cut within S. 144`" Street will require payment of a Pavement Mitigation Fee. (See PW Bulletin A3 — Pavement Mitigation and Transportation Impact Fees — Enclosed.) 4) Per City Ordinance all water meters and water meter service lines may need to be 1 -inch not 3/4 -inch as show on Civil Plan sheet UT2 (13 of 15). Future houses require fire sprinkler protection. 5) Civil site plans shall be designed per City of Tukwila standards, details, and specifications. An infrastructure design and construction standard manual is available at the Public Works Department and on the City Web Site. 6) Fire and Parks Impact Fees will apply to the new homes, and will be assessed with building permit application fees. JR Page 2 of 4 06/01/2011 H:\Short Plats\Foster Short Plat\L.10-004 Foster Short Plat - Preliminary Approval.doc 7) The final grading plan must show a flat area below rescue windows for Fire Department ground ladder placement. If unable to provide a suitable flat area adjacent to the houses please contact the Tukwila Fire. Marshal's office. 8) Submit a set of recording documents in either legal or record of survey format that meet the King County Recorder's requirements and contain the following items: 1. A survey map as described in the application checklist that is consistent with all of the conditions of approval and revised per the attached redlined map. The surveyor's original signature must be on the face of the plat. 2. Separate easement/maintenance agreement documents with legal descriptions for any common access/utility infrastructure. APPEALS This short plat approval decision is appealable to the Hearing Examiner. One administrative appeal of the decision on the short plat, excluding challenges to the DNS, is permitted. If no valid appeals are filed within the time limit, the decision of the Department will be final. In order to appeal the decision a written notice of appeal must be filed with the Department of Community Development within 14 days of the issuance of the Notice of Decision; that is, by Dine, „27, 2011. The requirements for such appeals are set forth in Tukwila Municipal Code 18.116. Appeal materials shall include: 1. The name of the appealing party. 2. The address and phone number. of the appealing party; and if the appealing party is a corporation, association or other group, the address and phone number of a contact person authorized to receive notices on the appealing party's behalf. 3. A statement identifying the decision being appealed and the alleged errors in the decision. 4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of the law in the decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal. 5. Appeal fee of $515. Any appeal shall be conducted as an open record hearing before the Hearing Examiner. The Hearing Examiner's decision on the appeal is the City's final decision. A party who is not satisfied with the outcome of the administrative appeal process may file an appeal in King County Superior Court from the Hearing Examiner's decision pursuant to the procedures and time limitations set forth in RCW ch. 36.70C. An appeal challenging a DNS, an MDNS or an EIS may be included in such an appeal. 2. Final Approval The next step is to install the required site improvements, comply with the conditions of approval and submit the necessary short plat documents (survey, legal descriptions, and other required paper work). All taxes and fees assessed against the property must be current prior to final approval. Please check with the King County Assessor's Office and the City of Tukwila Finance Department prior to submitting final documents. After the documents have been found to be in order, and the all of the requirements of the short plat have been met, the Chair of the Short Subdivision Committee signs your short plat which constitutes a grant of final approval. JR Page 3 of 4 06/01/2011 H:\Short Plats\Foster Short Plat L10-004 Foster Short Plat - Preliminary Approval.doc • Expiration The final approved short plat must be filed with the King County Department of Records by June, 1,3!;2012, one year from the date of this preliminary approval, or the application will expire. The City may grant a single one year extension if requested in writing prior to the expiration date. 3. Recording The signature of the Chairman of the Short Subdivision Committee certifies that your short plat application is ready for recording. It is your responsibility to record the City approved short plat documents with the King County Department of Records. You will need to pay the recording fees and submit your approved original short plat to King County. The short plat is not complete until the recording occurs and copies of the recorded documents are provided to the Department of Community Development. After recording, the County returns the recorded original to the City of Tukwila within 4-6 weeks, at which time your short plat is considered complete. You can shorten this processing time by hand -delivering a copy of the recorded short plat to the project planner. In many circumstances, building permits on the short platted property may not be issued until a copy of the recorded short plat (or original) is returned to the Department of Community Development. Sincerely, ack Pace hair, Short Subdivision Committee Enclosure: Sample Private Tract 'A' Access & Utilities Easement and Maintenance Agreement Sample Private Drainage Easement Sample Private Sidewalk & Utilities Easement Sample Storm Water Easement and Maintenance Agreement Redlined Survey Map Public Works Bulletin A3 Pavement Mitigation and Transportation Impact Fees cc: Bob Giberson, Public orks Director .j (please initial your approval) Nick Olivas, Fire Chief please initial your approval) TL Investment Group LLC, Owner William Bayh Rick Bidlack and Sheila Coppola King County Assessor, Accounting Division Washington State Department of Ecology JR Page 4 of 4 06/01/2011 H:\Short Plats\Foster Short Plat L10-004 Foster Short Plat - Preliminary Approval.doc eitti at J ukwiea Department Of Community Development AFFIDAVIT OF DISTRIBUTION I, Svedahl HEREBY DECLARE THAT: _Teri Notice of Application X Notice of Decision Mailing requested by: Jaimie eav' Notice of Public Hearing Notice of Public Meeting /(1,1/1A Determination of Non- Significance Mitigated Determination of Non - Significance Determination of Significance 8s Scoping Notice Short Subdivision Agenda Notice of Application for Shoreline Mgmt Permit Shoreline Mgmt Permit Board of Appeals Agenda Packet Board of Adjustment Agenda Packet Official Notice Notice of Action Other: Was mailed to each of the addresses listed/attached on this _13 day of June in the year 2011 Project Name: Foster Short Plat Project Number: PL10-003 Associated File Number (s): L10-004 Mailing requested by: Jaimie eav' Mailer's signature: /(1,1/1A l'----,_ W:\USERS\TERI\TEMPLATES\AFFIDAVIT OF DISTRIBUTION.DOC City of Tukwila • Department of Community Devetopment__- 6300 Southcenter Boulevard, Suite #100 Tukwila, Washington 98188 Phone: 206-431-3670 Fax: 206-431-3665 Web site: http://wwwci.tukwila.wa.us DETERMINATION OF NON -SIGNIFICANCE (DNS) File Number: E10-001 Applied: 01/27/2010 Issue Date: 08/20/2010 Status: APPROVED Applicant: PHAN, HAN Lead Agency: City of Tukwila Description of Proposal: SEPA REVIEW FOR 9 -LOT SHORT PLAT (2 LOTS INTO 9) Location of Proposal: Address: 4419 S 144 ST TIIKW Parcel Number: 0040000380 Section/Township/Range: 23N - 04E - 22 The City has determined that the proposal does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21c.030(2) (c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. This DNS is issued under WAC 197-11-340(2). Comments must be submitted by jer/. 3, 20/ 0 . The lead agency will not act on this proposal for 14 days from the date below. Jack P e, Resionsible Official City o kwila 6300 Southcenter Blvd Tukwila, WA 98188 (206)431-3670 A )I, iQ /b Date) Any appeal shall be linked to a specific governmental action. The State Environmental Policy Act is not intended to create a cause of action unrelated to a specific governmental action. Appeals of environmental determinations shall be commenced within the time period to appeal the governmental action that is subject to environmental review. (RCW 43.21C.075) • City of Tukwila _Ji» Haggerton, Mayor Department of Community Development Jack Pace, Director NOTICE OF DECISION To: Han Phan, PE, Applicant TL Investment Group LLC, Owner William Bayh Rick Bidlack Sheila Coppola State Department of Ecology, SEPA Division King County Assessor PROJECT: Foster Short Plat FILE NUMBERS: E10-001 (SEPA), L10-004 (Short Plat) ASSOCIATED FILES: PL10-003 (Project File) APPLICANT: Han Phan, PE REQUEST: SEPA/Environmental Review to subdivide two existing tax lots into nine lots for development of eight new single-family homes, with an existing single family home to remain on one of the new lots. The project includes associated access, utilities, and frontage improvements along S 144th Street. LOCATION: This notice is to confirm the decision reached by Tukwila's SEPA Official to issue a Determination of Non -significance (DNS) for the above project based on the environmental checklist and the underlying permit application. Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at: Tukwila Department of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 Monday through Friday 8:30 a.m. - 5:00 p.m. The project planner is Jaimie Reavis, who may be contacted at (206) 431-3670 for further information. The decision is appealable to the Superior Court pursuant to the Judicial Review of Land Use Decisions, Revised Code of Washington (RCW 36.70C). /i 3111) .cni,throntor Rmnavnrrl .cuita i 1 M • Tnhn,ilr, Wnchinatnn OR 1RR • Phnna -�/,7n • Pm. • 1/1!._ 4 2 1_ 2l,F City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST File No: E10-001 SUMMARY OF PROPOSED ACTION The proposal is to subdivide two existing tax lots into nine lots for the development of eight new single family homes, with a private access road, associated utilities, and stormwater management facilities. An existing detached garage will be demolished, and the existing single family home will remain. II. GENERAL INFORMATION Project Name: Foster Short Plat Applicant: Han Phan, PE Location: The project site includes the following address/parcels numbers: 4419 S 144th Street (parcel numbers 0040000380 and 0040000375) Zoning and Comprehensive Plan Designation: Low Density Residential District (LDR) The following information was considered as part of review of this application. 1. SEPA Checklist (dated 01/15/2010) and ESA screening checklist (dated 01/20/2010) 2. Civil drawings prepared by Han Phan, P.E. (dated 01/24/2010) 3. Technical Information Report prepared by The Concept Group (dated 01/20/2010). 4. Survey prepared by Schroeter Land Surveying (dated 01/18/2010). NOTE: Technical reports and attachments referenced above may not be attached to all copies of this decision. Copies of exhibits, reports, attachments, or other documents may be reviewed and/or obtained by contacting Jaimie Reavis, Assistant Planner, 6300 Southcenter Boulevard, Suite 100, Tukwila, Washington, 98188, Phone: 206-431-3659. III. REVIEW PROCESS The proposed action is subject to State Environmental Policy Act (SEPA) review as the project does not meet the exemptions listed under WAC 197-11-800. JR Page 1 of 8 H:\Short Plats\Foster Short Plat\E10-001 Foster Short Plat SEPA SR.doc 08/16/2010 6300 Southcenter Boulevard. Suite 4100 • Tuk-wila. Wachinvtnn 9R1RR • Phnna 7t)6 -.131 -?i 7() • FnY• 2nK-131.. • • IV. BACKGROUND/PROPOSAL The proposal is to subdivide two parcels into nine lots for development of eight new single-family homes with associated private access road and utilities. The total area of the project site is approximately 1.84 acres in size, and the site is currently developed with one existing single-family home, a detached garage, and a shed. The existing house will remain on one of the lots; the detached garage and shed will be demolished. Frontage improvements, to include sidewalks, will be constructed on the south side of S 144th Street for the length of the project site. New five-foot wide sidewalks are required on both sides of the new private access road. The applicant has prepared a Tree Retention and Landscape Planting Plan showing trees to be retained and those to be removed. Additionally, a new tree will be planted in the front yard of each new lot. V. REVIEW OF THE ENVIRONMENTAL CHECKLIST The following lists the elements contained within the Environmental .Checklist submitted for the proposed project. The numbers in the staff evaluation correspond to the numbers in the Environmental Checklist. If staff concurs with the applicant's response, this is so stated. If the response to a particular item in the checklist is found to be inadequate or clarification is needed, there is additional staff comment and evaluation. A. BACKGROUND: 1-4 - Concur with checklist. 5 — Construction for the project will occur following issuance of preliminary short plat approval, demolition of existing structures to be removed, the Public Works infrastructure permit, individual building permits for each lot, and after all other required permits are obtained from the City of Tukwila and other agencies. 6 - Concur with checklist. 7 — A Technical Information Report, including a Soils Infiltration Study, has been prepared for this project. Additionally, an NPDES permit will need to be obtained for this project. 8 — Concur with checklist. 9 —Preliminary Short Plat, Final Short Plat, a Public Works site development permit, building permits, and an NPDES permit will be needed for this proposal. 10 — Concur with checklist. 11— The site is on the south side of S 144th Street across from Foster High School and the Tukwila Pool. The site is made up of two parcels; parcel numbers 0040000380 and 0040000375. The site address of the parcel making up the eastern half of the project site (parcel 0040000380) is 4419 S 144th Street; the parcel on the western half of the project site does have an associated address. 12 - Concur with checklist. JR Page 2 of 8 H:\Short Plats\Foster Short Plat\E10-001 Foster Short Plat SEPA SR.doc 08/16/2010 B. ENVIRONMENTAL ELEMENTS: 1. Earth: a- The site slopes down from east side to west. The eastern portion of the site is relatively flat; the western half of the site slopes down to the southeastern corner of the site. Elevations on the site vary from a high point of 309 feet at the southeastern property line to a low point of 286 feet at the southwestern corner of the project site. b -c - Concur with checklist. d- Portions of the development site are mapped as being Class 2 landslide hazard areas on the City of Tukwila's Geologic Hazard Maps. Areas mapped on the City's Geologic Hazard Maps are approximate locations, to be verified by project applicants through further analysis. The analysis of topographic and soil conditions on the project site provided in the Technical Information Report included with application materials for the Foster Short Plat states that grades on site vary from 4.0% to 14.0%; and that there are no known surface indications or history of unstable soils or landslides in the immediate vicinity of the project site. e — Concur with checklist. f -g — Concur with checklist. A temporary erosion control and sedimentation plan shall be submitted for review as part of the Public Works construction permit. Maximum lot area coverage requirements and _ standards for the maximum area of the lot that may be covered by paved surfaces will be reviewed as part of each single-family dwelling unit building permit. h - The project shall meet all King County Surface Water Design Manual drainage requirements. All impacts associated with drainage will be mitigated as part of the Public Works construction permit. 2. Air: a -c - Concur with checklist. Applicant is required to obtain all relevant permits from the Puget Sound Clean Air Agency to address any emission to the air. 3. Water: a(1-4)- During the public comment period for, the notice of application for this project, two neighbors, including the owners of the adjacent property along S 144th Street to the west, as well as the property owner of the parcel south and west of the project site, commented that there is a low point which straddles the property line between the project site and adjacent properties to the south and west that becomes an occasional pond during storm events. A revision to the storm drainage design is proposed by the applicant to address comments received during the notice of application period. All impacts associated with drainage shall be mitigated by compliance with the King County Surface Water Design Manual. a(5-6) - Concur with checklist. b(1) -b(2) - Concur with checklist. c(1) — c(3) - The project shall meet all King County Surface Water Design Manual drainage requirements. Best Management Practices must be followed to ensure that no construction debris enters the storm drainage system. All impacts associated with drainage and construction debris will be mitigated as part of the public works construction permit. 4. Plants: a - Concur with checklist. b - The "TESC Plan 01/20/2010" survey shows 42 existing trees located on the project site; 18 of which will be preserved, and 22 of which are proposed for removal. The applicant shall follow JR Page 3 of 8 u•\chn t P10*c\P,. tP,- Chilli. PIoAF1 n_nnt Pnctpr Chn.r Plot CCPA cP �lnr 08/16/2010 the requirements of TMC Chapter 18.54 regarding proposed tree removal. Any trees located=ori adjacent properties shall be not be damaged by project construction. c - Concur with checklist. d — Several existing trees will be preserved, as shown in the table above, as well as on the TESC Plan submitted with application materials (Sheet 2 of 14 of the Civil Plans). Additionally, one tree will be planted in the front yard of each of the new lots as required by Chapter 17.20.030, section G, number 1. 5. Animals: a -b - Concur with checklist. c - This area is part of the Pacific Flyway, a primary corridor for migratory bird species. d — The requirement for the applicant to submit a tree replacement plan for trees proposed to be removed from steep slope areas shall be added as a condition of approval of the Preliminary Short Plat. 6. Energy and Natural Resources: a -c - Concur with checklist. 7. Environmental Health: a(1-2) - Concur with checklist. b(1) — Noise in the area includes traffic from S 144th Street, as well as traffic and other noise from Foster High School, located directly across the street to the north of the project site. b(2) -b(3) - The project must meet City of Tukwila noise regulations. Compliance with applicable local, state and federal noise regulations will mitigate any potential adverse noise impacts associated with the project. 8. Land and Shoreline Use: a -d - Concur with checklist. e -f — The zoning classification and comprehensive plan designation of the project site is Low Density Residential (LDR) District. g—Concur with checklist. h- Portions of the development site are mapped as being Class 2 landslide hazard areas on the City of Tukwila's Geologic Hazard Maps. Areas mapped on the City's Geologic Hazard Maps are approximate locations, to be verified by project applicants through further analysis. The JR Page 4 of 8 H:\Short Plats\Foster Short Plat\E10-001 Foster Short Plat SEPA SR.doc 08/16/2010 # of Trees to be Removed # of Trees to be Preserved # of Trees Unlabeled Lot 1 3 5 Lot 2 7 1 Lot 3 2 5 1 (straddles eastern property line) Lot 4 3 1 1 (located in southeastern corner) Lot 5 2 3 Lot 6 4 2 Lot 7 0 1 Lot 8 0 0 Lot 9 0 0 Access Road .1 0 c - Concur with checklist. d — Several existing trees will be preserved, as shown in the table above, as well as on the TESC Plan submitted with application materials (Sheet 2 of 14 of the Civil Plans). Additionally, one tree will be planted in the front yard of each of the new lots as required by Chapter 17.20.030, section G, number 1. 5. Animals: a -b - Concur with checklist. c - This area is part of the Pacific Flyway, a primary corridor for migratory bird species. d — The requirement for the applicant to submit a tree replacement plan for trees proposed to be removed from steep slope areas shall be added as a condition of approval of the Preliminary Short Plat. 6. Energy and Natural Resources: a -c - Concur with checklist. 7. Environmental Health: a(1-2) - Concur with checklist. b(1) — Noise in the area includes traffic from S 144th Street, as well as traffic and other noise from Foster High School, located directly across the street to the north of the project site. b(2) -b(3) - The project must meet City of Tukwila noise regulations. Compliance with applicable local, state and federal noise regulations will mitigate any potential adverse noise impacts associated with the project. 8. Land and Shoreline Use: a -d - Concur with checklist. e -f — The zoning classification and comprehensive plan designation of the project site is Low Density Residential (LDR) District. g—Concur with checklist. h- Portions of the development site are mapped as being Class 2 landslide hazard areas on the City of Tukwila's Geologic Hazard Maps. Areas mapped on the City's Geologic Hazard Maps are approximate locations, to be verified by project applicants through further analysis. The JR Page 4 of 8 H:\Short Plats\Foster Short Plat\E10-001 Foster Short Plat SEPA SR.doc 08/16/2010 • • analysis of topographic and soil conditions on the project site provided in the Technical Information Report included with application materials for the Foster Short Plat states that grades on site vary from 4.0% to 14.0%; and that there are no known surface indications or history of unstable soils or landslides in the immediate vicinity of the project site. i- The proposed development will consist of nine single-family dwelling units. Approximately 21 people will reside in the completed project, based on Census statistics which estimate an average household size of 2.38 persons for the City of Tukwila. j-1- Concur with checklist. 9. Housing: a -c - Concur with checklist. 10. Aesthetics: a — The height of structure(s) for each lot will be reviewed with the building permit application for each lot. The maximum allowable height in the LDR zone is 30 feet. b -c - Concur with checklist. 11. Light and Glare: a -d - Concur with checklist. 12. Recreation: a- The Tukwila Pool and recreation facilities associated with Foster High School, including playfields and a track, are located directly across the street from the project site. Cascade View Community Park is located off S 144th Street approximately %Z mile to the west, and Macadam Winter Garden is located off S 144th Street a little over %i mile to the east. b -c - Concur with checklist. 13. Historic and Cultural Preservation: a -c - Concur with checklist. 14. Transportation: a - Concur with checklist. b - King County Metro Route 128 serves the site, with bus stops along S 144th Street within walking distance of the project site. There are additional King County Metro transit routes along Tukwila International Blvd, approximately 1/4 mile from the project site. c — Concur with checklist. The number of parking spaces required will be reviewed as part of the development permit for each lot. d -e - Concur with checklist. f -g - The applicant has applied for a traffic concurrency certificate. Any mitigation for traffic impacts from this development project will be required as part of the building permit(s). 15. Public Services: a -b - Concur with checklist. Fire, Parks, and Traffic impact fees will be assessed with the building permit for each new single-family home. 16. Utilities: a -b - Concur with checklist. JR Page 5 of 8 u•\ct .. Dtn.n\l n..-. ct .. Dl .\C in !\/1l t:,...-. ct..... DI... ccn n en a ... 08/16/2010 • • COMMENTS : Two comment letters were received during the Notice of Application comment period for this project. William Bayh, 4244 S 146th Street Mr. Bayh expressed concern about the proposed storm drainage design. Mr. Bayh noted that during heavy winter rain, water often ponds in a low area near the southwest corner of the development site and the property directly to the west, and eventually leaches through the soil onto his property. He is worried that the infiltration trenches designed in the southern portions of Lots 3-6 along the south side of the project site, and the trenches designed along the west side of the site for Lots 7-9 will result in a higher rate of flow onto his property than currently occurs. He would like the applicant to consider either directing stormwater into a tight line system that connects directly to a storm drain or protecting the low area with a 200 or 300 foot buffer. Response: The applicant provided a response to Mr. Bayh's comments. He stated that infiltration trenches are typically designed to release water into the soil slowly, and a soil report was done to verify that soil conditions are adequate for infiltration, consistent with Best Management Practices contained in the King County Stormwater Design Manual. To address Mr. Bayh's concerns, the applicant attended two meetings (on 6/17/2010 and 6/25/2010) with Tukwila staff to discuss the comments during the Notice of Application. The applicant met with Tukwila's Stormwater Engineer on 6/25/2010 to discuss different storm drainage options in light of comments related to existing drainage conditions and the need to ensure that the new development project will not increase storm water runoff to adjacent properties to the west and south. After consultation with Tukwila's Stormwater Engineer, the applicant has agreed to re -design the storm drainage on lots closest to Mr. Bayh's property, as well as the property to the west; lots 6, 7, 8, and 9. Storm drainage modifications proposed include moving one of the two infiltration trenches proposed for Lot 6 to the north (front) side of the lot in order that infiltration trenches will be dispersed and not concentrated in the southwest corner of the lot which is the area of most concern to Mr. Bayh. For lots 7, 8, and 9, a perforated pipe will be used instead of two infiltration trenches for each lot. The perforated pipe will connect to a catch basin in S 144th Street to allow for infiltration as well as stormwater conveyance to the public stormwater system during large storm events. Rick Bidlack and Sheila Coppola, 4261 S 144th Street Rick Bidlack and Sheila Coppola own the property directly to the west of the project site along S 144th Street. Their comments are related to four different issues, including tree preservation, drainage, an existing fence on the project site which has historically been used to meet the safety requirements for the pool on their property, and privacy. The comments and response for each issue are listed below: Trees: Mr. Bidlack and Ms. Coppola are concerned that trees located on their property, or on the boundary between their property and the project site, may be damaged by infiltration trenches proposed for Lots 8 and 9. These trees include a large maple and a line of medium-sized cedars and junipers. Response: To respond to Mr. Bidlack and Ms. Coppola's concerns related to damage to trees located on their property, the applicant proposed to design a perforated pipe parallel to the west property line of the JR Page 6 of 8 H•\Short P1atc\Fncter Short P1at\F111_nnl Fnctrr Short Plat APPA SP rinr 08/16/2010 • project site through lots 7, 8, and 9 to convey storm water. The perforated pipe can be set back from the western property line shared with Mr. Bidlack's and Ms Coppola's property, in order that the tree root system in this area will not be disturbed. A review of the location of the perforated pipe on lots 7, 8, and 9 in relation to trees and their required root systems shall be done as part of revisions to plans submitted with the short plat application, and as part of the public works site construction permit. Drainage: Mr. Bidlack and Ms. Coppola had similar concerns to Mr. Bayh's related to storm drainage and the potential for increased storm flow to the low point located at the southwest corner of the project site. Their suggested approach to address the potential for increased storm drainage to the low spot is to backfill and regrade this area, which will involve dismantling and reconstructing a fence on the project site which provides a security function for the pool located on Mr. Bidlack and Ms. Coppola's property. Response: To address Mr. Bidlack and Ms. Coppola's concerns, the applicant originally proposed to construct a modular block wall along the west side of the project site and backfill with two to two -and -a -half feet of soil. The proposed wall will be located two to three feet away from the adjacent property to the west in order that the existing fence will not be disturbed. However, during the 6/17/2010 meeting, the applicant agreed that a less expensive alternative may be to backfill the low spot area on Mr. Bidlack and Ms. Coppola's property with fill from the project site, and to work with them to dismantle and reconstruct the fence. This work would be done during the public works site construction permit, subject to approval by the owner/developer of the project site. Fence: Mr. Bidlack and Ms. Coppola are concerned that an existing fence along the eastern boundary of their property, which is located a few inches east of their property line according to the survey prepared for this project, will be disturbed as part of this project. They state that the fence satisfies their legal responsibility to provide a 6 -foot enclosure around the swimming pool on their property, and the existing fence has been in place for over 30 years. Their concern is that this fence will need to be disturbed in order to address the low spot located at the southwest corner of the project site. Response: The applicant is proposing to backfill the low spot on Mr. Bidlack and Ms. Coppola's property, and to assist with dismantling and reconstruction of the existing chain link fence. This issue addressed as part of the public works permit application. Privacy: Mr. Bidlack and Ms. Coppola report that several trees were removed from the project site in December 2009. Since the trees provided screening for their pool area, removal of the trees represents a loss of privacy. They are proposing to plant a tall hedge on their property to replace the screening formerly provided by the trees that were removed from the project site. Response: The applicant stated that the project will preserve as many trees as possible in areas where existing trees will not conflict with installation of project infrastructure or development. Additionally, one tree will be added to the front yard of each lot as required by TMC 17.20.030 (G). JR Page 7 of 8 u•\c1 .. DIn..\c...... C{ n.. D1nAC1!\1\M r ..e. cl .. 131... CC'A cn .1.... 08/16/2010 • fir VII. CONCLUSION The proposal can be found to not have a probable significant adverse impact on the environment and pursuant to WAC 197-11-340, a Determination of Nonsignificance (DNS) is issued for this project This DNS is based on impacts identified within the environmental checklist, attachments, and the above "Final Staff Evaluation for Application No. E10-001", and is supported by plans, policies, and regulations formally adopted by the City of Tukwila for the exercise of substantive authority under SEPA to approve, condition, or deny proposed actions. Prepared by: Jaimie Reavis, Assistant Planner Date: August 16, 2010 JR Page 8 of 8 uacl ..n1 .as .e. c1 ..D1n.\C1( Aril c .e.cr ..m . CCD CD .4,." 08/16/2010 February 3, 2010 Mr. Han Phan, PE 5130 S 166t Lane SeaTac, WA 98188 ID City of Tukwila Jim Iluggerton, Mayor Department of Community Development Jack Puce, Director NOTICE OF COMPLETE APPLICATION Subject: Foster Short Plat and SEPA/Environmental Review Applications L10-004 / E10-001 Dear Mr. Phan: Your applications for a nine -lot short plat and SEPA/Environmental Review for the property located at 4419 S 144t Street in Tukwila (parcel #s 0040000375 and 0040000380) are considered complete on February 3, 2010 for the purposes of meeting state mandated time requirements. This determination of complete application does not preclude the ability of the City to require that you submit additional plans or information, if in our estimation such information is necessary to ensure the project meets the substantive requirements of the City or to complete the review process. This notice of complete application applies only to the permits identified above. It is your responsibility to apply for and obtain all necessary permits issued by other agencies. Please arrange to have the public notice board for this project manufactured and installed on site within the next 14 days. The City of Tukwila will coordinate the public notice mailing with installation of the public notice board. Once the public notice board is installed, the public comment period for this project will be 14 days for both the short plat and SEPA Environmental Review applications. These notice periods will run concurrently. Please feel free to call me at (206) 431-3659 with any questions. Sincerely, Jie Reavis Assistant Planner cc. L10-004, E10-001 JR Page 1 of 1 02/03/2010 H:\Short Plats\Foster Short Plat\L10-004 El 0-001 Complete Foster Short Plat.doc 6300 Southceater Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 • citci of J uPwiea • Department Of Community Development AFFIDAVIT OF DISTRIBUTION 1, Jaimie Reavis HEREBY DECLARE THAT: Project Name: Foster Short Plat Notice of Public Hearing X Determination of Non -Significance Notice of Public Meeting Mitigated Determination of Non - Significance Board of Adjustment Agenda Packet - Determination of Significance & Scoping Notice Board of Appeals Agenda Packet Notice of Action Planning Commission Agenda Packet Official Notice Short Subdivision Agenda Notice of Application Shoreline Mgmt Permit Notice of Application for Shoreline Mgmt Permit _ _ FAX To Seattle Times Classifieds Mail: Gail Muller Classifieds PO Box 70 - Seattle WA 98111 Other: Was mailed to each of the addresses attached on this 20th day of August in the year 2010 I'tzi(,J 4 .ridden z,t (A,*c up, 14DrieCt aR De CAS l o - Project Name: Foster Short Plat Project Number: E10-001 Mailing requested by: Jaimie Reavis Mailer's signature: G,�✓ 1�_to tp_,._,,,--- H:\SHORT PLATS\FOSTER SHORT PLAT\AFFIDAVIT OF DISTRIBUTION.DOC TECHNICAL INFORMATION REPORT RECEIVED SEP 10 2013 • DLVL-LOF MLN f Fos` 441- T' 41!T GO 1-_..- NgL fl ac5E The Concept Group 4701 SW Admiral Way, Suite 353 • Seattle, WA 98116 • anna@theconceptgrp.com E10-OOl Land Development & Civil Engineering Consultants FOSTER SHORT PLAT 4419/44XX SOUTH 144TH TUKWILA, WA 98168 September 2013 I cert0i that this technical information report and all attachments were prepared either by me or my technical staff working directly under my supervision. RECEIVED SEP 10 2013 1)LVLLUI'ML-NT THE CONCEPT GROUP C to-oo( Table of Contents SECTION 1: PROJECT OVERVIEW 1 SITE INFORMATION 1 DRAINAGE BASIN 4 SOILS INFORMATION 5 SECTION 2: CONDITIONS AND REQUIREMENTS 6 DESIGN REQUIREMENTS 6 SECTION 3: OFFSITE ANALYSIS 8 RESOURCE REVIEW - 8 LEVEL 1 DOWNSTREAM ANALYSIS 1 1 SECTION 4: FLOW CONTROL /WATER QUALITY ANALYSIS AND DESIGN 12 EXISTING HYDROLOGY 12 DISCHARGE AT NATURAL (EXISTING) LOCATION 13 DEVELOPED SITE HYDROLOGY 13 PERFORMANCE STANDARDS 13 FLOW CONTROL SYSTEM 14 WATER QUALITY SYSTEM 16 DOWNSPOUT INFILTRATION TRENCHES 16 SECTION 5: CONVEYANCE SYSTEM ANALYSIS AND DESIGN 16 100 -YEAR FLOOD/OVERFLOW CONDITION 17 SECTION 6: SPECIAL REPORTS AND STUDIES 17 SECTION 7: OTHER PERMITS 17 SECTION 8: EROSION CONTROL ANALYSIS AND DESIGN 17 CONSTRUCTION SEQUENCE AND PROCEDURE 17 TRAPPING SEDIMENT 18 SECTION 9: BOND QUANTITIES AND DECLARATIONS OF COVENANTS 18 SECTION 10: OPERATIONS AND MAINTENANCE 18 Appendices Appendix A: Soils Information Appendix B: Proposed Drainage Plan & Stormwater Facilities Design Appendix C: Erosion Control Plan & Details Appendix D: Maintenance Procedures Acronym Terminology ,,Inch cf Cubic Feet cfs Cubic Feet per Second CMP Corrugated Metal Pipe DI Ductile Iron HDPE High Density Polyvinyl Ethane KCSWM King County Surface Water Manual PGIS Pollution Generating Impervious Surface PVC Polyvinyl Chloride RCP Reinforced Concrete Pipe SCS Soils Service Conservation Sq Ft Square foot General Notes: 1. The information contained in this report is based on a topography and boundary survey prepared by Schroeter Surveying, the King County Assessor's map, City of Tukwila's storm water inventory maps, and on-site observations and measurements. If any changes are made to these drawings or the site that will affect the calculations in this report, the engineer shall be notified. All construction based on this report shall be stopped and shall not proceed until the impact of the changes can be reflected in a supplement report. 2. This report is based on limited subsurface exploration. During construction, if soil conditions are found that are significantly different from those identified in this report, construction should stop until those items affected by the changed conditions can be identified and adjusted, if needed to reflect the changed conditions. 3. This report is prepared for the sole use of client for the purpose of subdividing the property located at 4419/44xx South 144th Street in Tukwila, Washington. All other uses are expressly prohibited without prior written approval from the engineer. 4. All construction related to the drainage system for this project will be in accordance with the 2009 King County Surface Water Design Manual and the 2007 King County Roads Standards unless specifically mentioned in this report and/or approved by the City of Tukwila. Foster Short Plat -Technical Information Report September 2013 SECTION 1: PROJECT OVERVIEW The property is located at 44xx/4419 South 144th Street in the City of Tukwila, Washington. There is currently one (1) single family residence on the property. The project proposes to short plat the existing two (2) parcels into nine (9) single family residential lots. Proposed improvements include the demolition of the existing detached garage and the construction of eight (8) new single-family structures, a private access road, associated utilities and stormwater management facilities. Site Information Address: 44xx /4419 South 144`h Section/Township/Range: NE Y4 Sec. 22, T.23N, R.4E of W.M. Size: 80,176 sq ft (approximately 1.84 acre) City, County, State: Tukwila, King County, Washington Governing Agency: City of Tukwila Design Criteria: 2009 King County Surface Water Manual Zone: Single Family Residence — SR6 Water District: King County Water District #125 Sewer District: Valley View Sewer District Figure 1 — Vicinity Map / Site Location Not -to -Scale R09400 - The Concept Group Page 1 Foster Short Plat -Technical Information Report September 2013 Looking south onto property from South 144th Street. Looking south onto property from South 144th Street. R09400 - The Concept Group Page 2 Foster Short Plat -Technical Information Report September 2013 Drainage Basin The property is located within the Lower Green River sub -basin. The entire property drains to one basin with a contributing area of 1.84 acres. The general topography of the site slopes from southeast to northwest. Elevations on the site vary from a high point of 309 feet at the southeastern property line to 286 feet at the northwestern property line, with grades varying from 4.0% to 14.0%. Figure 2 — Drainage Study Area Not -to -Scale R09400 - The Concept Group Page 4 Foster Short PIat -Technical Information Report September 2013 Looking west onto property from South m Looking east onto property from South 144th R09400 - The Concept Group panes Foster Short Plat -Technical Information Report September 2013 Soils Information Soils Survey The United States Department of Agriculture Natural Resource Conservation Service (NRCS) did not map soils information in the project vicinity because it is an urban area. A Soils Infiltration Study was performed by TJ Engineering Consultants, Inc. Site soils were classified as silty sand, Unified Soil Classification System (USCS) designation SM. The KCRTS equivalent soils group, as defined in Table 3.2.2.6 of the 2009 King County Surface Water Manual (KCSWM), is Till. Refer to Appendix A for the Soils Infiltration Study. R09400 - The Concept Group Page 5 Foster Short Plat —Technical Information Report September 2013 SECTION 2: CONDITIONS AND REQUIREMENTS Design Requirements The 2009 King County Surface Water Manual sets forth the drainage requirements for this project. The project adds more than 5,000 SF of new impervious surface, therefore is subject to a full drainage review. The eight (8) Core Requirements and five (5) Special Requirements of the SWM drainage requirements are detailed in this section. Table 1 provides a summary to the requirements. Table 1 - Jurisdictional Requirements Peak Run-off Control: Level 2 Flow Control Water Quality: Basic Conveyance: 25 year developed event Downstream Analysis: 14 mile Core Requirement #1: Discharge at the Natural Location Surface water will continue to infiltrate to native soils with overflow sheet flowing to its natural location of discharge along South 144th Street. Core Requirement #2: Offsite Analysis A Level 1 offsite analysis is provided in Section 3 of this report. Core Requirement #3: Flow Control This project is located within the Level 2 flow control area per the City of Tukwila stormwater maps. An underground detention tank with a flow control structure is proposed to meet Core Requirement #3. Refer to Section 4 of this report for a detailed analysis and discussion of the proposed detention pond. Core Requirement #4: Conveyance System The conveyance system has been designed with sufficient capacity to convey and contain the 25 -year peak flow. Refer to Section 5 of this report for a detailed analysis and discussion of the conveyance system. Core Requirement #5: Erosion and Sediment Control The project will provide erosion and sediment controls (ESC) to prevent, to the maximum extent practicable, the transport of sediment from the project site. Refer to Section 8 of this report for a discussion of the ESC measures proposed. Core Requirement #6: Maintenance and Operations Maintenance and operations of all drainage facilities is the responsibility of the applicant or property owner. A kidittenance and ;Operations Agr"eem°entWi;lbhetp"Ia'ced+ on the face plat>map to ensure iliat all future owners are legallyliable for the°upkeep;of, R09400 - The Concept Group Page 6 Foster Short Plat -Technical Information Report September 2013 the stormwater management facilities. Maintenance and operation guidelines are provided in Section 10 of this report. Core Requirement #7: Financial Guarantees and Liability This project is exempt from this core requirement because the stormwater facilities will be privately maintained. Core Requirement #8: Water Quality This project is located within the Basic Water Quality Menu. A StormFilter Cartridge Treatment System is proposed to address the water quality requirements of the project. Refer to Section 4 of this report for a detailed analySis and discussion of the proposed wetland pond. Special Requirement #1: Other Adopted Area -Specific Requirement Based on information provided by City staff during the pre -application meeting, no other area -specific requirements are imposed on this property. Special Requirement #2: Flood Hazard Delineation Based on FEMA Flood Map #53033C0960F, the project area is located in Zone X, a 500 -year flood plain. Special Requirement #3: Flood Protection Facilities The project is not located in a flood hazard area; therefore, it is exempt from Special Requirement #3. Special Requirement #4: Source Control This project is a single-family residential community development. It is not a commercial, industrial, or multi -family site development; therefore, it is exempt from Special Requirement #4. Special Requirement #5: Oil Control This project not defined as a high -use site per section 1.3.4 of the 2009 KCSWM; therefore, it is exempt from Special Requirement #5. R09400 - The Concept Group Page 7 Foster Short Plat -Technical Information Report September 2013 SECTION 3: OFFSITE ANALYSIS Resource Review A resource review was conducted to document existing and potential flooding and erosion problems. Basin Reconnaissance Summary Reports - Project is located in the Lower Green River Basin. No landslide or erosion areas noted in the study area. FEMA Maps - Based on FEMA Flood Map #53033C0960F, the project area is located in Zone X, a 500 -year flood plain. Figure 3 — Flood Map Not -to -Scale R09400 - The Concept Group Page 8 .1 APPROxIMAIE SCALE IN FEET uvo� c ;oao ' • MK /► j ZONE X �� NATIONAL FLOOD DISORDER PROGRAM 16 3 ,;;, 7i,,-. : REFI llr:. 1 h: rr i. kk r �i FIRM ROOD INSURANCE RATE MAP . KING COUNTY, WASHINGTON AND INCORPORATED AREAS PANEL 880 or ins p o i Iw+s rm wsrrtFm ` !1 .,n 2,.,i NAP NUMBER 57D33CO960 F MAPj REVISED: p'.k MAY 18,1995 re..I Emeneu.r AsnagEmcm Agsnq `t;u. .,--i,,,:,1 S . In -nn ,,FEET \-,n,.t Project Location 00110 MPEET E AE 2-ai F: - CITY OFSI ATACal 530 5303ZU��i;j 2201) AVM. 30VTII - 21 1 L 22 4. track, Fd 0est FLA. F? 4 N.t oat Hoo Imur Store vl . W. 1 1 I / Figure 3 — Flood Map Not -to -Scale R09400 - The Concept Group Page 8 Foster Short Plat -Technical Information Report September 2013 Sensitive Areas Folio - The project site is not located in or near a mapped Sensitive Area per the King County sensitive areas inventory maps. N l Project Location gmHighlighted Feature County Boundary x Mountain Peaks Highways g Incorporated Area Streets t Legend ,115' EJ Molds Loci Parcels Lakes and Large Rivers Streams SAO Erosion Figure 4 — Sensitive Area Map Not -to -Scale R09400 - The Concept Group Page 9 Foster Short Plat -Technical Information Report September 2013 Wetlands Inventory - The project site is not located in or near a mapped wetland per the King County sensitive areas inventory maps. Project Location Higldlglttod Feature - 1 County Boundary x Mountain Peaks Highways A/ Incorporated Area Streets 11e Highway o 0 Legend Ailariab Loaf Parcels Lakes and Large Rivers Streams SAO Wetland SWIM Landslide Hazards (cent) 111 LandOitie Maud II Lavish&H d Drainage Figure 5 — Wetland Inventory Map Not -to -Scale R09400 - The Concept Group Page 10 Foster Short Plat -Technical Information Report September 2013 Hazardous Landslide - The project site is not located in or near a mapped wetland per the King County sensitive areas inventory maps. Hlgtdlghted Feature ( 1 County Boundary x Mountain Peaks Highways AI Incorporated Area Streets ifif M korai Legend Fif Mixt* Lod1 0Parcels EJtakes and Large Rivers /! Streams SAO landslide SWIM Landslide Hazards (cant) ■ Landslide Huard ■Laidhazard Drainage Figure 6 — Hazardous Landslide Map Not -to -Scale City of Tukwila Storm Drain As-builts - City of Tukwila Public Works Department as- builts for 42nd Avenue South storm drainage improvements were referenced for the downstream analysis. Level 1 Downstream Analysis A downstream analysis was conducted on August 5, 2013. The weather was sunny with temperatures in the high 70's degrees Fahrenheit. The site is currently developed with a single family house. The general topography of the site slopes from southeast to northwest. Elevations on the site vary from a high point of 309 feet at the southeastern property line to 286 feet at the northwestern property line, with grades varying from 4.0% to 14.0%. Some of the surface infiltrates R09400 - The Concept Group Page 11 Foster Short Plat -Technical Information Report September 2013 to native soils. During heavy storm events, stormwater runoff sheet flows to its natural location of discharge along South 144th Street. Stormwater runoff is collected in a catch basin and conveyed in a 12" PVC storm drain along South 144th Street prior to discharging to the 42nd Avenue South drainage system. Stormwater is entirely.contained in the public storm drainage system beyond a quarter mile from the site prior to discharging to the regional detention pond, known as 42nd Avenue Detention Pond. The 42nd Avenue Detention Pond reduces and filters stormwater for discharge into the North Fork of Gilliam Creek. No existing or .potential flooding problems, capacity, or erosion+ problems, were observed. Based onutheaavailabilityof'existing drainage information, the developed site will not create or aggravate existing downstream condition's. SECTION 4: FLOW CONTROL /WATER QUALITY ANALYSIS AND DESIGN Existing Hydrology The project site is 1.84 acres; however, only 1.44 acres is within the Target Discharge surface. Lot 1 is not a target surface because the existing impervious surface will not be replaced and no new impervious surface is proposed for this area. Per the 2009 KCSWDM Section 1.2.3, flow control facilities are not required for existing impervious surface that is NOT replaced: "onsite flow control facilities is required]... to mitigate the impacts of storm and surface water runoJgenerated by new impervious surface, new pervious surface, and replaced impervious surface." Furthermore, the surface areas of Lot #1 was not modeled in the KCRTS model because the existing impervious surface is NOT a target discharge area as defined on page 1-41 of the 2009 KCSWM, "...[only] existing impervious surface added since January 2001 [must be mitigated]." King County property tax records document that the existing house was built in 1916 and renovated in 1962; therefore, the existing target surface that was developed prior to January 2001, does not require flow control mitigation. Refer to Appendix B for copies of email correspondence with Mark Wilgus, PE; King County Surface Water Engineer, regarding the code interpretation of this section of the 2009 KCSWDM. 1.2.3 CORE REQUIREMENT #3: FLOW CONTROL All proposed projects, including redevelopment projects, must provide onsite flow control facilities or Clow control BMPs or both to mitigate the impacts of storm and surface water runoff generated by new impervious surface, new pervious surface, and replaced impervious surface targeted for flow mitigation as specified in the following sections. Flow control facilities must be provided and designed to perform as specified by the area -specific flow control facility- requirement in Section 1.2.3.1 (p. 1-35) and in accordance with the applicable flow control facility implementation requirements in Section 1.2.3.2 (p. 1-45). Flow control BMPs must be provided as directed by the flow control BMPs requirement in Section 1.2.3.3 (p. 1-50) and applied as specified by the flow control BMP requirements in Section 5.2. R E. n u E M E N T R09400 - The Concept Group Page 12 Foster Short Plat -Technical Information Report September 2013 Discharge at Natural (Existing) Location During heavy rainfall events, stormwater will continue to sheet flow toward South 144th Street. Developed Site Hydrology The project proposes to short plat the existing two (2) parcels into nine (9) single family residential lots. Proposed improvements include the demolition of the existing detached garage and the construction of eight (8) new single-family structures, a private access road, associated utilities and stormwater management facilities. Developed Onsite Assumptions Each residential lot is assumed to consist of approximately 1,900 sq ft to 2,200 sq ft of new impervious surface with the remainder of the property consisting of landscape and lawns. Lot 1 Drainage Design The existing residential structure on Lot 1 will remain. No new stormwater facility is proposed for this property because Lot 1 is not a target discharge surface as defined in the 2009 KCSWDM Section 1.2.3. Lot 2 - 9 Drainage Design On-site roof stormwater runoff will be collected through an underground drainage system consisting of pipes, yard drains and catch basins. Infiltration trenches are proposed for each of the new residential structures. During heavy rainfall events, stormwater will sheet flow toward the new private access road and collected in a conveyance system of catch basins and pipes and routed to the stormwater detention tank. Private Access Road Drainage Design The private access road will be constructed with pervious pavement. Stormwater will be collected in a conveyance system of catch basins andpipes and routed to a 2 - cartridge StormFilter treatment catch basin prior to discharging to the underground stormwater detention tank. Stormwater from a small portion of the private access road will not flow to the detention tank due to the topography of the site. This stormwater will be collected in a catch basin and routed to its own infiltration trench. Performance Standards Level 2 Flow Control This project will create approximately 22,170 sq ft of new impervious surface; therefore, is subject to a full drainage review requiring flow control facilities. Per the City of Tukwila stormwater map, the project is located in a Level 2 flow control area. R09400 - The Concept Group Page 13 Foster Short Plat -Technical Information Report September 2013 Conveyance System The proposed conveyance system is designed with sufficient capacity to convey and contains the 25 -year peak flow, assuming developed conditions for onsite tributary areas and existing conditions for offsite tributary areas. Flow Control System KCRTS Hydrologic Model The King County Runoff Time Series (KCRTS) Hydrologic Model is the required methodology under the 2009 King County Surface Water Design Manual for sizing detention facilities. Sizing credits for Roof Downspout Controls was used to size the detention tank. Per the 2009 KCSWDM, Table 5.2.2.A "the roof area may be discounted from the net impervious area used for sizing flow control facilities" where roof runoff is infiltrated. Furthermore, permeable pavement is modeled as 50% impervious and 50% grass. Tables 3-5 summarize the KCRTS inputs for the project area. Table 3 — KCRTS Inputs Rainfall Region SeaTac Scale Factor 1.0 TABLE 5.2.2.A FLOtV'CONTROL BLIP FACILITY SIZINGCREDITS(') Flow Control BMP Type Facility Sizing Credit Full dispersion Model fully dispersed surface as forest(2) Full infiltration(3) Subtract impervious area that is fully infiltrated Limited infiltration Model tributary impervious surface as 50% impervious, 50% grass Basic dispersion Model dispersed impervious surface as 50% impervious, 50% grass Rain garden Model tributary impervious surface as 50% impervious, 50% grass Permeable pavement (non -grassed) Model permeable pavement area as 50% impervious, 50% grass Tables 3-5 summarize the KCRTS inputs for the project area. Table 3 — KCRTS Inputs Rainfall Region SeaTac Scale Factor 1.0 Table 5 — Developed Conditions in KCRTS Model Table 4 — Existing Conditions in KCRTS Model Areas (acres) Areas (acres) Roof Area (Infiltrated, not accounted in model) Till Forest 0.776 Till Grass Impervious 1.44 0.00 0.00 Table 5 — Developed Conditions in KCRTS Model Areas (acres) Till Grass Roof Area (Infiltrated, not accounted in model) Impervious 0.776 0.395 0.269 R09400 - The Concept Group Page 14 Foster Short Plat -Technical Information Report September 2013 Tables 6 summarizes the KCRTS output. Table 6 -Peak Runoff Rates (cfs) Event Existing Condition Developed Condition Developed Condition w/Flow Control 2 -year 0.04 0.10 0.05 10 -year 0.07 0.14 0.08 25 -year 0.19 0.17 0.09 100 -year 0.12 0.29 0.29 Detention Pond A storage volume of 3,511 cubic feet is required for this project. An eight (7) feet diameter x 100 feet long tank is proposed to provide this detention capacity. Level 2 flow control performance is demonstrated by the following duration comparison plot from KCRTS: O Paused o Duration Analvsi KGR : lllwl®I 0) U a) E) m c)) cn N_ 0 o_ rdout.dur 0 target.dur • 0 R 0 o o . . • • •. o ••. 0 N O '• O O c, ___.o 10 00 •• s 10 10 s 10 Probability Exceedence 2 10 1 100 As shown in the comparative duration plot, the downstream duration is below the predevelopment duration; no excursions exceed positive 10%; and more than half (10/14) of the excursions are equal to or less than zero. In addition, the Table 7 shows that the 10 and 25 -year peak release rates are below the corresponding existing peaks, which demonstrates that the Level 1 performance criteria is exceeded. R09400 - The Concept Group Page 15 Foster Short Plat -Technical Information Report September 2013 Table 7 - Peak Flow Comparisons Areas (acres) Return Period Existing Release Rate (cfs) Detention Pond Release Rate (cfs) 10 -year 0.07 0.07 25 -year 0.19 0.08 Water Quality System Approximately 12,829 square feet is pollution -generating impervious surface (PGIS). PGIS is defined as "an impervious surface considered to be a significant source of pollutants in surface and storm water runoff. Such surfaces include those subject to vehicular use or storage of erodible or leachable materials, wastes, or chemicals, and which receive direct rainfall or the run-on or blow-in of rainfall." Non-metal rooftops are not considered PGIS; therefore, are not included in the PGIS area calculations. A 2 -cartridge StormFilter® treatment structure is proposed for this project. The StormFilter is a flow -based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by using 35% of the 2 year developed flow from KCRTS. Refer to Appendix B for detailed water quality calculations. Downspout Infiltration Trenches The Infiltration Study, prepared by TJ Engineering Consultants, Inc. dated, December 11, 2009 states an average measured infiltration rate of 9.5 inches per hour. This report classifies the soils as medium to fine sand. Per the 2009 King County Surface Water Manual, Section 5.1.1, downspout infiltration trenches shall be a minimum of 75 LF per 1,000 SF of impervious surface for medium sand based on a 2 FT wide trench. Refer to Table to 8 for trench dimensions. Table 8 - Infiltration Trench Design Impervious Surface Area Required Bottom Surface Area Provided Bottom Surface Area Lot 2 Roof=1400 SF 210 SF 210 SF Lot 3 - 9 Roofs -1800 SF 270 SF 270 SF 650 SF (private road) 95 SF 100 SF SECTION 5: CONVEYANCE SYSTEM ANALYSIS AND DESIGN The proposed conveyance system is designed with sufficient capacity to convey and contain the 100 -year peak flow. Refer to Table 8 and Appendix 8 for conveyance calculations and details. Table 8 - Capacity Analysis Contributing Basin Pipe Size (in.) Pipe Slope (%) 25 -year Flow (cfs) 100 -year Flow (cfs) Pipe Capacity (cfs) entire private road 8 4.0 0.64 0.77 2.42 R09400 - The Concept Group Page 16 Foster Short Plat -Technical Information Report September 2013 100 -Year Flood/Overflow Condition Overflow of the stormwater pond will discharge stormwater to the drainage system located along South 144th Street. SECTION 6: SPECIAL REPORTS AND STUDIES The Soils Infiltration Study was prepared by TJ Engineering Consultants, Inc. dated, December 11, 2009. No other reports or special studies have been prepared for this project. SECTION 7: OTHER PERMITS Permit for this project included: • Short Plat Approval • Building Construction Permit • Public Works Type C Permit SECTION 8: EROSION CONTROL ANALYSIS AND DESIGN All erosion and sediment control measures shall be governed by the requirements of the City of Tukwila. An Erosion and Sedimentation Control plan has been prepared to assist the contractor in complying with these requirements and designed to prevent sediment -laden run-off from leaving the site during construction. Refer to Appendix C for Erosion Control plans and details. The erosion potential of the site is influenced by four major factors: soil characteristics, vegetative cover, topography, and climate. Erosion/ sedimentation control is achieved by a combination of structural measures, cover measures, and construction practices that are tailored to fit the specific site. Construction Sequence and Procedure Prior to the start of any grading activity upon the site, all erosion control measures, including installation of a stabilized construction entrance, shall be installed in accordance with the construction documents. The best construction practice will be employed to properly clear and grade the site and to schedule construction activities. The planned construction sequence for the construction of the site is as follows: 1. Flag or fence clearing limits. 2. Install catch basin protection if required. 3. Grade and install construction entrance(s). 4. Install perimeter protection (silt fence, brush barrier, etc.). 5. Construct sediment ponds and traps. 6. Grade and stabilize construction roads. 7. Construct surface water controls (interceptor dikes, pipe slope drains, etc.) simultaneously with clearing and grading for project development. 8. Maintain erosion control measures in accordance with City of Tukwila and King County standards and manufacturer's recommendations. R09400 - The Concept Group Page 17 Foster Short Plat -Technical Information Report September 2013 9. Relocate erosion control measures or install new measures so that as site conditions change the erosion and sediment control is always in accordance with the King County Erosion and Sediment Control Standards. 10.Cover all areas that will be unworked for more than seven days during the dry season or two days during the wet season with straw, wood fiber mulch, compost, plastic sheeting or equivalent. 11.Stabilize all areas that reach final grade within seven days. 12. Seed or sod any areas to remain unworked for more than 30 days. 13. Upon completion of the project, all disturbed areas must be stabilized and BMPs removed if appropriate. Trapping Sediment Structural control measures will be used to reduce erosion and retain sediment on the construction site. The control measures will be selected to fit specific site and seasonal conditions. The following items will be used to control erosion and sedimentation processes: • Temporary gravel construction entrance • Filter fabric fences (Silt fences) • Ground cover measures such as straw cover and/or hydroseeding • Inlet protection Vehicle tracking of mud off-site shall be avoided. Installation of a gravel construction entrance will be installed at a location to enter the site. The entrances are a minimum requirement and may be supplemented if tracking of mud onto public streets becomes excessive. SECTION 9: BOND QUANTITIES AND DECLARATIONS OF COVENANTS None known at the time this report was prepared. SECTION 10: OPERATIONS AND MAINTENANCE The owner or operator of the project shall be responsible for maintaining the stormwater facilities in accordance with the requirements as attached in Appendix D. Proper maintenance is important for adequate functioning of the stormwater facilities. If it is unclear whether a problem exists, contact a Professional Engineer. At a minimum, infiltration trenches must be maintained as follows: • Infiltration trenches must be inspected annually and after major storm events to identify and repair any physical defects. Maintenance and operation of the system should focus on ensuring the system's viability by preventing sediment - laden flows from entering the device. Excessive sedimentation will result in a plugged or non-functioning facility. • If the infiltration device has a catch basin, sediment accumulation must be removed on a yearly basis or more frequently if necessary. Prolonged ponding around or atop a device may indicate a plugged facility. • If the device becomes plugged, it must be replaced. R09400 - The Concept Group Page 18 Foster Short Plat -Technical Information Report September 2013 • Keeping the areas that drain to infiltration devices well swept and clean will enhance the longevity of these devices. • For roofs, frequent cleaning of gutters will reduce sediment loads to these devices. R09400 - The Concept Group Page 19 Foster Short Plat -Technical Information Report Sept 2013 Appendix A Soils Information R09400 - The Concept Group Appendices TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical December 11, 2009 The Concept Group Anna Nguyen, P.E. 4701 SW Admiral Way, Ste # 353 Seattle, WA 98146 Attention: Anna Nguyen Subject: Infiltration Study (Foster) 4419 S. 144th St Tukwila, WA 98168 Dear Ms. Nguyen: At your request we are pleased to present this report summarizing the textural analysis of site soils and providing design recommendations for infiltrating the roof run-off water. The recommendations contained in this study are based on infiltration testing and textural analysis of site soils sampled at representative locations Our scope of work for this study was outlined in the E-mail communication sent to us, and the proposal approved on December 10, 2009. Our scope of work for this study included the following: Excavating three test pits and logging the soil profiles, three sieve analysis and classification of the soil, performing three infiltration tests, summarizing results and providing recommendations for infiltration. The infiltration tests were performed using the EPA falling head method. P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural. Transportation. Environmental, Geotechnical Project description We understand that the development will consist of sub -dividing the approximately two acre site into 8-9 Single Family Residences (SFR). The roof run-off from the SFR'S will be disposed of using infiltration systems designed by The Concept Group based on our analysis of site soils. The infiltration trenches for the SFR roof run-off water systems will be underlain by silty sand type soils, Unified Soil Classification System (USCS) designation SM. These soils were surficially loose becoming dense with depth, suitable for infiltration. No ground water was encountered during our test pits. Moderately weathered glacial till consisting of silty -sand to silty -sand with gravel was encountered at six to seven feet below existing grade. Based on the anticipated bottom of facility elevations, the planned infiltration of roof run-off water should not be adversely impacted by the presence of till which has a moderately low permeability. Infiltration Evaluation Our subsurface exploration was conducted on December, 5 2009. Three test pits were excavated between the two adjacent parcels. Please see the attached location map denoting the approximate locations of the test pits (TP) and infiltration tests (I).The test pit logs, grain size analysis data from A.A.R. Testing Laboratory Inc., and infiltration test results are summarized for your convince. Please refer to the test pit logs for a more detailed description of the conditions encountered at each location. Summary Test Infiltration Soils Tested infiltration Location Test depth Rate (iph) I-1 1.50 feet below SM 10 inch/hr existing grade I-2 1.50 feet below SM 9 inches/hr existing grade I-3 1.5 feet below SM 10 inches/hr existing grade P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical Infiltration Recommendations Based on the results of our infiltration tests and observed soil conditions, in our opinion, infiltration of roof run-off water should be feasible for the individual SFR'S. Based on our infiltration test data and review of the King County Surface Water Design Manual, the following infiltration values and factors of safety should be used: • Measured Infiltration rate: 8 inch/hr • F testing = 0.30 (EPA Falling Head test method) • F plugging = 0.7 (for fine sands and loamy sands) • F geometry = The Concept Group • D = Depth to maximum wet season water table or nearest impervious layer not reached, test pits terminated at 10 feet below existing grade. • W = width of facility, The Concept Group. Limitations Our recommendations and conclusions are based on the site materials observed, selective laboratory testing, and engineering analysis, from the design information provided to us, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manor consistent with that level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in the area. No warranty is expressed or implied. Additional Services TJ Engineering Consultants Inc. has provided only the specific services requested outlined in the scope of work of this report. No other conclusions should be derived from the geotechnical data gathered from our site exploration without further consultation from our office. TJ Engineering Consultants Inc. should be retained to provide geotechnical services during construction. This is to observe compliance with design concepts, specifications, or recommendations, and allow design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. We do not accept responsibility for performance of the foundation or earthwork unless we are retained to review construction drawings and specifications, and to provide construction observation and testing services. P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 Huy D.Tran P.E. Principle Attachments: Location plan Particle Size Distribution and USCS Classification Soil Logs P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 Foster Short Plat - Soils Log Locations The information included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied. as to accuracy. completeness. timeliness, or rights to the use of such information. This document is not intended for use as a survey product. King County shall not be liable for any general, special, indirect, incidental, or consequential damages including. but not limited to. lost revenues or lost profits resulting from the use or misuse of the information contained on this map. Any sale of this map or information on this map is prohibited except by written permission of King County Date- 12f12/2009 Source King County {MAP - Property Information i,http!fwww.metrokc.gov(GISIiMAP) King County Foster Short Plat -Technical Information Report Sept 2013 Appendix B Proposed Drainage Plan Stormwater Facilities Calculations R09400 - The Concept Group Appendices 'w NE1/4, SEC. 22-T23N-R4E, W.M. STA 2+08.50, 9.75 RT 507+00 W/LOCKING VANED GRATE ss w ,-144TH STA 5054-43.69= PVT. RD. STK 10+00 'w CB g7 -TYPE 1 STA\ 2+08.50, CL W/SOI.JD\LOCKING UD 15.0' PRIVATE DRAINAGE'£ASEMENT do SEWER SEMENT 10 LF 6' 0 SDS N12 ROOF DRAIN STUB 0 0.5p% MIN. • c.a en _ ;[YEE-1 STA 2+70.50, CL W/SOLID LOCKIN? UD 10 LF 6" 0 ADS )412 ROOF DRAIN STUB 0 0.50% MIN. 0.7' east\' CB g6 -TYPE 2 (48') STA 10+26, 12.25' RT W/LOCKING VANED GRATE 506'+00 7 LFA 12' 0 DI 95 LF 12" 0 ADSI N12 0 0.50% • O r ,A 5 ---1-_-_- - 9 LF 8' 0 AD$ N12 00.50%' 2(_F36'0PVC 0 0.0% ;\ 10.0' SIDEWALK & I UTILITY EASEMENT ' LOT 9 11(7,037 SQ. FT.) 1 I STA 10+40, 7.5' RT CENTER OF TANK 26 LF 12' 0 PVC 0 0.50% 0 = CB 65 -TYPE 2, 54' FLOW STA 10+55.75, 7.5' RT M " , , SHEET DR3 FOR DETAI TOwPgr 0 ce baaa. acctkn uM s,0 de c'N'' !''" 4Ha'.an tcY..checy• toe. GIS 410. p9p�0� 0�0' SEWER EASEMENT g1 -TYPE 1 STA 100+74. 9.25' LT W/LOCKING VANED GRATE & OIL/WATER SBRXRAT0R W/FINE MESH SCREEN I; 8.07 DIA. X 115.Fe LONG CMP DETENTION ANK I SEE SHEET DR3 „,OR DETAILS I ,°.� 7,. LOT 1 Frn f (17,453 SQ FT.) 1 A 11+60, 7.5' RT CNTER OF TANK f' ' USE AIN MAIN ( -_ 1 � 'est edge concrete _• 6 1.1' west II I � n'wc's'V I O, c e chain 'ink fence :s 5 3' west 99.0.99.0.Vr Oa g4-TYPEA2, 48" 2-CARTRIDe S I STORMFI W/SOLID LOCKING/lip I $TA 11+ 50, 7.5' RT SEE SH T DR2 FOR DETAIL ALF 2A% 0 PVC %a f7.23 BLOT 2 (6,903 SQ. FT.) / 5 ,' /i ✓ ,ar.r.me� II est edge concret• is 1.1' west eP S87°5143T yd. canoe.. 9� 8 82.30' 62.30' p,d, hi Ma a Or *a • PVT. ACCESS ROAD/LOT 6 ROOF INFILTRATION TRENCH (12'W X 20'L X 2'D) .p \20 i N LO 6 / 0 S0LI8, PVC OQ.O% ' (6,629 S. FT.) 1 8. LF 6' 0/ADS ROOF DRAIN STUB 010.50% MIN. T ' BE CONNECTED TO P RFORATEIj 11GHTLNE SNB OUT LOT 5 , (6,578 S4. FT.) CB g22*TYPE 1 1 STA 12+28, 28.0' RT � W/LOCI�ING VANED GRATE ,1,4 13:\ •Ng 12+ OT, 5) I ' o� o� PPVT. RD. STA 1+19.04= $ HAMMERHEAD_ 4 00+00 / LOT' (6,731 S1 FT.) 2 ROOF/FOORNG INFILTRATION SEE NOTE 7 I 15 ord- / P0. ( gg �G N / 66.00' 587"51'43'E 25776' ' - o 14 ^s' t / 6 LOT 3 . (7,597 SQ. FT.)/ NOTES: SEE PLANS 10.0' MIN 5.0' MIN 6' RIGID PERFORATED PIPE 0 0.0X INFILTRATION TRENCHES ROOF DRAIN 1) PLAN VIEW NTS 6' RIGID PERFORATED PIPE 0 0.0X °LISTING GROUND \_CATCH BASIN OR AREA DRAIN ROOF DRAIN ROCF DOWN SPOUT MTh OVERFLOW WYE AND SPLASH BLOCK FINE MESH SCREEN ELEVATION VIEW NTS BACKFIL .01 EXISTING GROUND 4- SOLID PIPE WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC r RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) ROOF/FOOTING INFILTRATION TRENCH 0 SCALE: NONE 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR2 FOR DRAINAGE PROFILES AND DETAILS. 5. SEE SHEET DR3 FOR DETENTION TANK DETAILS. 6. SEE SHEET UT1 & UT2 FOR SEWER AND WATER PLANS. 7. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 8. ALL UTIUTIES TO BE PLACED UNDERGROUND. EXISTING GROUND-\ HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PVC 90* ELBOW, ROTATE TO FIT (TYP) 6" PVC PIPE TIGHUNE 0 0.0X 6' RIGID PERFORATED PIPE (LEVEL) END CONNECTION (BETWEEN PERFORATED PIPES) CD SCALE: NONE REFERENCE SHEET NO. DR1 SHEET 7 OF 15 SHEETS 1 - CL oo cic <0 z z < 0 w cc tr 0 IL CC ao ce DESIGNED BY: o. ee cq 03 Wow ‘044~ rAeg,teiv-taant .N.$411 '' Al *41trAiri- 3.0' EXISTING GROUND 4- SOLID PIPE WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC r RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) ROOF/FOOTING INFILTRATION TRENCH 0 SCALE: NONE 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR2 FOR DRAINAGE PROFILES AND DETAILS. 5. SEE SHEET DR3 FOR DETENTION TANK DETAILS. 6. SEE SHEET UT1 & UT2 FOR SEWER AND WATER PLANS. 7. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 8. ALL UTIUTIES TO BE PLACED UNDERGROUND. EXISTING GROUND-\ HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PVC 90* ELBOW, ROTATE TO FIT (TYP) 6" PVC PIPE TIGHUNE 0 0.0X 6' RIGID PERFORATED PIPE (LEVEL) END CONNECTION (BETWEEN PERFORATED PIPES) CD SCALE: NONE REFERENCE SHEET NO. DR1 SHEET 7 OF 15 SHEETS 1 - CL oo cic <0 z z < 0 w cc tr 0 IL CC ao ce DESIGNED BY: o. ee cq 03 6 rking\R09400 — Foster Short Plat \CADD\Drawings\R09400— Aug 31. 2013 — 5:57pm 312 --- 306W 3043.- ccui 300L_ / 296' - C8 /6 -TYPE 2 (487 STA'1D+28,-1225 RT ROA EL(EV=299. 3 E GUT ( =29257 292 -- ...._ - V,. 28 LF 12' 0 PVC 288 O 0.50% C8 PS -TYPE 2 54• FLOW CONTROL STA' 10+55:75. 7:5 ROI 301.38 IE91-(S 50•-- IE OUT N1Y»292.70 EX. BOUND.. ALONG TRACT 'A' ALIGNMENT F68SN GRADE ALONG TRACT 'A' AUGMENT #4- 7+ PE , RY ORMFLTER STA RIM ELEV=301.45 -1El14_294.9 IE 0U (»2921 TYPE 2 (481 STA-111+8FR,-12 KT - C8 /4A -TYPE 2. (541 STA 11+84.25, 7.5 RT RIM ELEV=301.28 IE IN 295.22 IE CUT ( 295.12 RI hEV=301.48 IE IN (SP29260 K)=29250- - EX -GROUND (TYP)-1 ' -r FWISH GRADE 2LF38f fPVC 00.09 ry� 2 LF MP) 36' PVC 0 0.0% -9 LF 8"0 PVC 0 2.0% 4 LF 12' • PVC - - 0 1.0% CB j2 -TYPE 1 STA 12+2&.21.17_,RL- STA 100+28. 9.25 LT RIM ELEV-299.33 IE OUT-(NE)=296.10 312 308 304 300 \ ` \ 296 LF 6' 0 ADS N12 0 20% 292 UNcn 10+00 11+00 DRAINAGE PROFILE ALONG TRACT 'A' HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 Inch = 20 ft 1 Inch = 5 ft. 12+00 CU n C8 j6 -TYPE 2 (481 STA 1+12.25, CENTERLINE RIM ELEV=299.73 CUP DETENTION_ - ---- SEE SHET 0R3 FOR, DETAILS - _ EX -GROUND (TYP)-1 ' -r FWISH GRADE 2LF38f fPVC 00.09 ry� 2 LF MP) 36' PVC 0 0.0% -9 LF 8"0 PVC 0 2.0% 4 LF 12' • PVC - - 0 1.0% CB j2 -TYPE 1 STA 12+2&.21.17_,RL- STA 100+28. 9.25 LT RIM ELEV-299.33 IE OUT-(NE)=296.10 312 308 304 300 \ ` \ 296 LF 6' 0 ADS N12 0 20% 292 UNcn 10+00 11+00 DRAINAGE PROFILE ALONG TRACT 'A' HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 Inch = 20 ft 1 Inch = 5 ft. 12+00 CU n C8 j6 -TYPE 2 (481 STA 1+12.25, CENTERLINE RIM ELEV=299.73 3+00 2+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20 ft. 1 inch = 5 ft. 304 300 296 292 288 284 280 1+00 REFERENCE SHEET NO. DR2 SHEET 8 OF 15 SHEETS 1- w w H � a� IE co co w rn co o 1 a CD 013 1- H • VJ Q J W LIO CC w ^O^ cc Q- (- 0IL Z CC Q O cc O v, INLET FIFE (SEE NOTES 5 4 6) 871 2.0 HDPE OUTLET 51)30 (SEE NOTES 5 4 6) MANHOLE STORMFILTER - PLAN VIEW 11 1 CONCRETE GRADE RING INLET PIPE (SEE NOTES 5 4 6) 3057 FRAME AND COVER (STD) (SEE NOTE 4) HDPE OUTLET RISER WITH SCUM BAFFLE 4'-4 MIN (SEE NOR 7) STORMFILTER CARTRIDGE (tt?) (SEE NOR 21 BALLAST (5EE NOTE 8) H2)5)11T 200200RAIN MANIFOLD SEE DETAIL 2/2 MANHOLE STORMFILTER - SECTION VIEW OA 1 02008 CONTECH Stony:water Solulb= Tit 51.0144WATER MN✓GDACNT 5tomf Atoll U.5. PATENT No. 5.32 .625, No. 5.707 527. No 6 027.635 No. 6.645.045. No. 5.624.576. AND OINK U.5. AND FOREIGN 1dT9119✓OW CCONTECH. STORMWATER„.. PRECAST 48" MANHOLE STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL Da,.Wa1D 04TL00100 19026040/0 1111E rou12.106F545Pc011 IORA4N:11AN I°Ano GENERAL NOTES 11 STORMFILTER BY CONTECH STORMWATER SOLUTIONS, PORTLAND, OR (800) 5484667; SCARBOROUGH, ME (877) 907-0676; LINTNICUM, MD (866) 7403318 2) FILTER CARTRIDGEIS) TO BE SIPHON.ACTUATED AND 50f-QPMIING, STANDARD DETAIL SHOWS MAXIMUM NUMBER OF CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPECIFIED ON sat PLANS OR IN DATA TABLE BELOW. 3) PRECAST MANHOLE STRUCTURE TO BE CONSTRUCTED IN ACCORDANCE :MFH ASTM 0478. DETAI1 02514075 DESIGN INTENT ONLY ACTUAL DIMENSIOF5 AND CONFIGURATION OF STRUCTURE WILL BE SHOWN ON PRODUCTION SHOP DRAWING. 4) STRUCTURE AND 28 f ? , COVERS TO MEET AA5HTO H.20 LOAD RATING 5) FOR LOW DROP CARTRIDGE, DROP REQUIRED 15 I .8'. FOR 18' CARTRIDGE, DR.5 REQUIRED 15 2.3', FOR 27. CARTRIDGE DROP MOORED L5 3 05'. MMIMUM ANGLE BETWEEN INLET AND OUTLET 5 45•. 6) INLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR PRECAST MANHOLE STORMFILTER EQUIPPED WITH A DUAL DIAMETER HDPE OUTLET STUB AND SAND COLLAR EIGHT INCH DIAMETER OUTLET SECTION MAY BE SEPARATED FROM OUTLET STUB AT MOLDED -IN CUT UNE TO ACCOMMODATE A 12 INCH OUTLET PIPE. CONNECTION TO DOWNSTREAM PIPING TO BE MADE USING A FI.5115LE COUPLING OR ECCENTRIC REDUCER. A5 REQUIRED. COUPUNG BY FERNCO OR EQUAL AND PROVIDED BY CONTRACTOR. 7) PROVIDE MINIMUM CLEARANCE FOR MAINTENANCE ACCESS. IPA SHALLOWER SYSTEM 15 REQUIRED. CONTACT CONTECH STORMWATER SOLUTIONS FOR OTHER OPTIONS. 8) ANTI -FLOTATION BAUAST TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR. IF REQUIRED. BALLAST TO BE SET AROUND 1H2 PERIMETER OF THE STRUCTURE. 9) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR MORE INFORMATION CT �+0 1 STA 2+0650. CENIERLOIE it -limp -LW -Jr IE OUT(^)=292.57 AND COVER (STD) ID CB 644 STA 2++70C13-11�50,,CENTERLINE 0RE WATER OUAUTY ROW RATE (6)5) WATER R DOS -,-- _ PEAK FLOW RATE (<I es) 0.230 RIM T1h.29E.80 RETURN PERIOD OF (yrs) tE WELEV=2 43007 FINISH GRADE U IE OUT (N)=292.39 IE IN (SSE NF)a29239- CARTRIDGE ROW RATE It O€TE,5)=29=29209 , - _ - -ADS- .--. ZPG RIM ELEVATION 301 .44' /'' ' 0 AD N12 ORIENTATION MATERIAL DIAMETER ------O INLET PIPE 21 - - _ ... - - Q50%2 I r 8' ou�TETT s MANHOLE STORMFILTER - TOP VIEW O UB 292.58' 90A PVC 2 r YESWO - C8 j8 -TYPE 1 STA 2+08.50, 9.75 RT RIA SAND COLLAR ANTI -ROTATION BALLAST N. 0 70 OUTLET '0OUTLETSTUBMOUTLET 59 LF 8" 0 ADS N12 0 0.50% RIM ELEV=29 75 C____0(.44011492102.0 0 RISER N LUT LIN[ STUB Il" NOTESSPECIAL REQUIREMENTS: WD O 0. n II//. hAr_ imilliz ////.�+ OUTLET PIP[ (BY CONTRACTOR) COUPLING _ IE IN (S)=29205 No. 6.5.540. No. 5.624.576. O 63N,. 2 AND OTHER 2.5. AND 50104N 02006 CONTECH SbrtnwaleT Solution= mow, mow NIE_■ .aPRECAST STORMWATER ` fLUT1ONS_ 48" MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL AW" D"tl 2 2n cantolatormentarsom oar coma 141000 orm I Fila MAUL Mgi-54Wc0TL 1oRAwr4347w 1accao:ARo n Al O 59 LF 8- • ADS N12 00,502 7LF1Y0DI00.50% m cn N n N n N 'r! N o 0 3+00 2+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20 ft. 1 inch = 5 ft. 304 300 296 292 288 284 280 1+00 REFERENCE SHEET NO. DR2 SHEET 8 OF 15 SHEETS 1- w w H � a� IE co co w rn co o 1 a CD 013 1- H • VJ Q J W LIO CC w ^O^ cc Q- (- 0IL Z CC Q O cc O v, INLET FIFE (SEE NOTES 5 4 6) 871 2.0 HDPE OUTLET 51)30 (SEE NOTES 5 4 6) MANHOLE STORMFILTER - PLAN VIEW 11 1 CONCRETE GRADE RING INLET PIPE (SEE NOTES 5 4 6) 3057 FRAME AND COVER (STD) (SEE NOTE 4) HDPE OUTLET RISER WITH SCUM BAFFLE 4'-4 MIN (SEE NOR 7) STORMFILTER CARTRIDGE (tt?) (SEE NOR 21 BALLAST (5EE NOTE 8) H2)5)11T 200200RAIN MANIFOLD SEE DETAIL 2/2 MANHOLE STORMFILTER - SECTION VIEW OA 1 02008 CONTECH Stony:water Solulb= Tit 51.0144WATER MN✓GDACNT 5tomf Atoll U.5. PATENT No. 5.32 .625, No. 5.707 527. No 6 027.635 No. 6.645.045. No. 5.624.576. AND OINK U.5. AND FOREIGN 1dT9119✓OW CCONTECH. STORMWATER„.. PRECAST 48" MANHOLE STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL Da,.Wa1D 04TL00100 19026040/0 1111E rou12.106F545Pc011 IORA4N:11AN I°Ano STORMFILTER DETAILS O SCALE: NONE -EXISTING GROUND -- WASHED ROCK 3/4" - 1 1/2' (TYP) WRAP WASHED ROCK ENTIRELY WITH ALTER FABRIC (TYP) 6' RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE NONE CB #1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 20 LF 6' 0 SOLID PVC 0 0.0% ' (W)= GENERAL NOTES 11 STORMFILTER BY CONTECH STORMWATER SOLUTIONS, PORTLAND, OR (800) 5484667; SCARBOROUGH, ME (877) 907-0676; LINTNICUM, MD (866) 7403318 2) FILTER CARTRIDGEIS) TO BE SIPHON.ACTUATED AND 50f-QPMIING, STANDARD DETAIL SHOWS MAXIMUM NUMBER OF CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPECIFIED ON sat PLANS OR IN DATA TABLE BELOW. 3) PRECAST MANHOLE STRUCTURE TO BE CONSTRUCTED IN ACCORDANCE :MFH ASTM 0478. DETAI1 02514075 DESIGN INTENT ONLY ACTUAL DIMENSIOF5 AND CONFIGURATION OF STRUCTURE WILL BE SHOWN ON PRODUCTION SHOP DRAWING. 4) STRUCTURE AND 28 f ? , COVERS TO MEET AA5HTO H.20 LOAD RATING 5) FOR LOW DROP CARTRIDGE, DROP REQUIRED 15 I .8'. FOR 18' CARTRIDGE, DR.5 REQUIRED 15 2.3', FOR 27. CARTRIDGE DROP MOORED L5 3 05'. MMIMUM ANGLE BETWEEN INLET AND OUTLET 5 45•. 6) INLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR PRECAST MANHOLE STORMFILTER EQUIPPED WITH A DUAL DIAMETER HDPE OUTLET STUB AND SAND COLLAR EIGHT INCH DIAMETER OUTLET SECTION MAY BE SEPARATED FROM OUTLET STUB AT MOLDED -IN CUT UNE TO ACCOMMODATE A 12 INCH OUTLET PIPE. CONNECTION TO DOWNSTREAM PIPING TO BE MADE USING A FI.5115LE COUPLING OR ECCENTRIC REDUCER. A5 REQUIRED. COUPUNG BY FERNCO OR EQUAL AND PROVIDED BY CONTRACTOR. 7) PROVIDE MINIMUM CLEARANCE FOR MAINTENANCE ACCESS. IPA SHALLOWER SYSTEM 15 REQUIRED. CONTACT CONTECH STORMWATER SOLUTIONS FOR OTHER OPTIONS. 8) ANTI -FLOTATION BAUAST TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR. IF REQUIRED. BALLAST TO BE SET AROUND 1H2 PERIMETER OF THE STRUCTURE. 9) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR MORE INFORMATION 100 PRECAST MANI1OLE STORMFILTER DATA AND COVER (STD) ID CB 644 0RE WATER OUAUTY ROW RATE (6)5) WATER 0.56 296 PEAK FLOW RATE (<I es) 0.230 tE'1�-( IE auT RETURN PERIOD OF (yrs) 2 43007 202) 20 Y OF CARTRIDGES REQUIRED 2 CARTRIDGE ROW RATE 15 MEDIA TYPE (CSF, PERUTE, ZPG) ZPG RIM ELEVATION 301 .44' PIPE DATA I.E. ORIENTATION MATERIAL DIAMETER INLET PIPE 21 294.38' 180` PVC 8' ou�TETT s MANHOLE STORMFILTER - TOP VIEW O UB 292.58' 90A PVC 12' 2 ECCENTRIC REDUCER YESWO SIZE (BY CONTRACTOR) RIA SAND COLLAR ANTI -ROTATION BALLAST WIDTH HEIGHT OUTLET '0OUTLETSTUBMOUTLET RISER N LUT LIN[ STUB Il" NOTESSPECIAL REQUIREMENTS: PIPE ORIENTATION KEY:8OOUTLET 180. 2 0' II//. hAr_ imilliz ////.�+ OUTLET PIP[ (BY CONTRACTOR) COUPLING _� (BY CONTRACTOR) (SIE[ NOTE 6) 8411451 GROUT (SEE NOR 8) (BY CONTRACTOR) 1112STO10MWATN MANA615.1M 5tooredbU.5. P010 No.. 5 322.625, MANHOLE STORMFILTER - OUTLET DETAIL 5.707.527. w. 6.027.095 No. 6.5.540. No. 5.624.576. O 63N,. 2 AND OTHER 2.5. AND 50104N 02006 CONTECH SbrtnwaleT Solution= mow, mow NIE_■ .aPRECAST STORMWATER ` fLUT1ONS_ 48" MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL AW" D"tl 2 2n cantolatormentarsom oar coma 141000 orm I Fila MAUL Mgi-54Wc0TL 1oRAwr4347w 1accao:ARo STORMFILTER DETAILS O SCALE: NONE -EXISTING GROUND -- WASHED ROCK 3/4" - 1 1/2' (TYP) WRAP WASHED ROCK ENTIRELY WITH ALTER FABRIC (TYP) 6' RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE NONE CB #1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 20 LF 6' 0 SOLID PVC 0 0.0% ' (W)= 89 -( 100 YAR) DRAIN -100+97;-8 STA RIM ELEV=293.1 296 tE'1�-( IE auT 28S99�, (N)=213', TO 'NFL Y. GROUND� ' - _ 292 FINISH G' ADE . ?88 0� N vi p.,,: N tT.IglN o o 100+50 101+00 PVT. ACCESS ROAD PROF. 4' LT 9.5 TR. VANED GRATE I � OIL COLLECTION I I TO INFILTRATION TRENCH MUNE SEDIMENT - COLLECTION CATCH BASIN ROAD OIL/WATER SEPARATOR CB O SCALE: NONE HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20 ft. 1 inch = 5 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 F � < ti CI N au u) - O3 Zto O a. DESIGNED BY: co CHECKED BY: C) z 02 n REVISION DESCRIPTION m z PROVIDE CONFINED SPACE SIGN PER OSHA REQUIREMENT (TYP. ALL RISERS) ROUND MANHOLE COVER MARKED 'DRAIN' rWITH LOCKING BOLTS ELBOW RESTRICTOR, SEE DETAIL 6 FINISH GRADE 1 18' DIA CMP FABRICATED TEE AND RISER (ALUMINUM) 3'X0.90' ALUMINUM PIPE SUPPORT STRAP SPACED AT 3.0'. ANCHOR TO WALL WITH 96' STAINLESS ANCHOR BOLT 1.0' MIN DOUTLET PIPE CMP COUPUNG IE (OUT)= 292.70-' 12- REMOVABLE SECTION OF RISER TO BE ATTACHED WITH GASKETED BAND RESTRICTOR PLATE 0.64' ORIFICE EL= 292.00 2.0' MIN CLEARANCE TO ANY PORTION OF FROP-T INCLUDING ELBOWS OUTLET TO CCB #6 ELBOW RESTRICTOR SEE DETAIL • N N 2.0' MIN 100 YR MAX W.S. ELEV= 29&50 HANDHOLDS, STEPS OR LADDER MEETING ALL REQUIREMENTS OF KING COUNTY STD. FIGURE 7-006 UFT HANDLE EXTEND TO MH COVER INLET PIPE d D A • DD C REMOVABLE WATERTIGHT COUPLING OR FLANGE SECTION NTS z • 6' MAX PLATE WELDED TO ELBOW WITH 1.21' ORIFICE, ELEV= 295.50 ELBOW RESTRICTOR DETAIL NTS CB #5, TYPE 2-54' DIA PLAN VIEW NTS NOTES -IE (IN)= 292.50 SHEAR GATE WITH CONTROL ROD FOR CLEANOUT/DRAIN PER KING COUNTY STD. FIGURE 7-02E INFLOW FROM DETENTION TANK LOCATE LADDER & COVER TO PROVIDE 2.0' CLEARANCE FROM LADDER TO TEE AND PIPES. CB#5TYPE 2-54' FLOW CONTROL STRUCTURE DETAIL O SCALE: NONE 7.0' DIA BULKHEAD B 100.0' 5 0 20.0' 36' RISER -\CB g5 TYPE 254 FINISH GRADE CB g5 TYPE 2-54' FLOW CONTROL STRUCTURE SEE DETAIL THIS SHEET OUTLET TO _CB /6 36' ACCESS RISERS COMPACTED BACKFILL 3/4' - 1 1/2' WASHED ROCK BACKFILL FOR DRAINS 2.0' MIN BANDS (TYP) O PLAN 20.0' TYP NTS 100.0' B 7.0' DIA BULKHEAD CB #4A TYPE 2-54' 7.0' DIA CMP DETENTION TANK PER CON TECH 36' ACCESS RISERS WITH LADDER ow) MEETING ALL REQUIREMENTS OF KING COUNTY SID. FIGURE 7-006-7 7.0' DIA CMP DETENTION TANK TOP ELEV=299.00 BOTTOM ELEV=29200 — - - 6' FREEBOARD- DESIGN MWSE=296.50 — STORAGE DEPTH III 1".--1 2 LF 36' PVC 6' SEDIMENT STORAGE SECTION A -A NTS PVT. ACCESS ROAD FINISH GRADE SEE PG1 FOR ROADWAY SECTIONS TANK TOP ELEV=299.00 7.0' DIA CMP TANK SECTION B -B NTS TANK BOTTOM ELEV=292.00 2.0' MIN -2 LF 36' PVC A INLET FROMT CB #4 J CB 614A TYPE 2-54' [SEE DETAIL ON SHEET DR1 INLET FROM NOTES: 1. ALL METAL PARTS CORROSION RESISTANT. STEEL PARTS GALVANIZED AND ASPHALT COATED (TREATMENT 1 OR BETTER). 2. IF THE CONTRACTOR SEEKS TO USE A DIFFERENT PRODUCT THAN CONTECH, CONTRACTOR MUST SUBMIT A REVISION TO CITY OF TUKWILA PUBUC WORKS FOR REVIEW AND APPROVAL. DETENTION TANK DETAIL O SCALE NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. DR3 SHEET 9 OF 15 SHEETS 1— LJ.A IJJ „er 52 • co ce .cc CI)U)� W • rn I--- 0 - Z U) 0-a w Q z oa Z W 0 ww 0 co < —' � N IA CO o+ 6 o O 1 cc x DESIGNED BY: x CHECKED BY: 0 2 o. a z s 0 m z Layout Name: Layoutl 507+00 ss ST9... 505. +.43.6.9..=. _... RD. STA 10+00 505+00 26 LF 8' 0 PVC 0 0.50% .sausznikiMMEXIMP 15.0'',RIVATE • DRAINAGE 'EASEMENT & SEWER SEMENT - S:L \ I1 i I 1 I se SIDEWALK & 4°'t FJ TY_EASEMENT , ' CB #-TYPE 1 _ --- •1 ST/00+40, 6.0' LT a,,,a.0 -11 W%§OJD LOCKIN_G-UD--.____. _ 15.5 LF r0PV(`. 0 0.509 , I , .1 r I I S Li I J 0 os location r tit Iaw mom r tmat M e.•mr .a, r, a• a/a,0. 4 isA POPoS Jot-' a>d' 0 entry f,nc. lWM9 won M NN wav chcin link fence :s 5.3' west LOT 1 (17,453 SQ. FT.) a, r, r .Ra.. 10.0' SEWER., 5 EASEMENT 312 W h� 0.2' east - z 103.50' 587°49'10'E 300 296 292 a 0 0 \ y. r/ 12LF6'0P ROOF DRAIN 'PVT. RD. STA\12+19.. ? 0 1.0R N. HAMMERH 1 STk100+11 , (SEE` Ci#11-TYPE 1 FAI Y _ • , S TTA 12+18.25, 6.0' I \ W A 99+L4C1.0' 0GR ,D (6 7) ! ; i ,598 SQ�/ 11! I 61 LF 8" 0 PVC \• \ ,�s 014.0% f 1.-- - 7.5143'E 44.14' \ �i, ' f.�!' :'. ,.:I � r tDAMENIVIBMIENNI wr 1 -5L .t L6*� ,ln yr I „ t.; 100+00 a • , eon' -, .,. -..q/IN 1 ! .)EWALK atr tti '20 IF 6 TYEEASEMENT•ROOT:.D �_ i . 8XB, : j .'(SEE.tst o ,{lest edge concret• is 1.1' west Via, est edge concret( is 1.1' west 00 Mw" sago 000.0 • �y2e NY` 12 LF 6" 0 PVC ROOF DRAIN STUB 0 1.0R MIN. ` I (sEE tit) 7"51 43E 82.30' -� 62.30' 0 PVC N STUB 0 1.0X MIFI. r1 10+00 11+00 12+00 312 308 304 300 296 312 308 304 300 296 292 292 8 000 er0 000 100 001ISok conosmer es H Or ss« NATIVE FILL WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC z -EXISTING GROUND 4" RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) WASHED ROCK 3/4" - 1 1/2" TRENCH X -SECTION NTS FUTURE HOUSE DRIVEWAY FINISH GRADE SLOPE WASHED ROC( 3/4" - 1 1/2" INFILTRATION TRENCH DETAIL HOUSE PLAN VIEW OF ROOF NTS SCALE NONE CONNECT TO LOT ROOF DRAIN STUB 2' X 10' LEVEL TRENCH W/PERFORATED PIPE, TO BE INSTALLED AT THE TIME OF BUILDING PERMIT CATCH BASIN OR AREA DRAIN WITH SOLID UD PERFORATED TIGHTLINE STUB OUT O SCALE: NONE NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 5. ALL UTIUTIES TO BE PLACED UNDERGROUND. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. DR4 SHEET 10 OF 15 SHEETS 1_ ce 0 cn W 1-- 0 u - Z Q Q Z W <-J0 Z W Q Q W ZCC 0 0 CC LL 0- c8 no -TYPE STA 99+30 1 1.0' RT C8 12 -TYPE 1 STA 10+40, 6.0' LT C8 #11 -TYPE 1 STA 12+18.25, 6.0' LT EX C8 STA 10+15.50, 6.85' RT RDA ElEV-300.92 IE IN (5 295.23 o GROUVD ALONG RIM ELEK 300.99 IE N (E).297.25 IE-04JT"(W)- 30 RDA ELEV-299.00 IE IN 00=296.60 tWT'(N)297.111 IE1X11- =298.23 _, TRACT 'A' ALIGNMENT flXILAU "A" ALIGNMENT S_ IE 0UT(RF29Ti1- IEUN OUT EF2966.1 TRACT FINISH i GRADE 7- IIvs T- T t 4' DI WATER MAIN 81 LF 89 0 PVC 4.00 L- MIN. 1.2jCLEARANCE EX GROUND - - - (TYP)-- ! T t - FV U CPUC- 0.50% 1...-+• 1 "01 ¢ A N F1AI d2ADE 75.5LF8'1PVC! 0 0.5D1< L_ CC a40ND-(TYP) (1' P) -28-1.rr 0 NR CV• AR � 1-1r RR .-q nR 0,n rX 10+00 11+00 12+00 312 308 304 300 296 312 308 304 300 296 292 292 8 000 er0 000 100 001ISok conosmer es H Or ss« NATIVE FILL WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC z -EXISTING GROUND 4" RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) WASHED ROCK 3/4" - 1 1/2" TRENCH X -SECTION NTS FUTURE HOUSE DRIVEWAY FINISH GRADE SLOPE WASHED ROC( 3/4" - 1 1/2" INFILTRATION TRENCH DETAIL HOUSE PLAN VIEW OF ROOF NTS SCALE NONE CONNECT TO LOT ROOF DRAIN STUB 2' X 10' LEVEL TRENCH W/PERFORATED PIPE, TO BE INSTALLED AT THE TIME OF BUILDING PERMIT CATCH BASIN OR AREA DRAIN WITH SOLID UD PERFORATED TIGHTLINE STUB OUT O SCALE: NONE NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 5. ALL UTIUTIES TO BE PLACED UNDERGROUND. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. DR4 SHEET 10 OF 15 SHEETS 1_ ce 0 cn W 1-- 0 u - Z Q Q Z W <-J0 Z W Q Q W ZCC 0 0 CC LL 0- c8 no -TYPE STA 99+30 1 1.0' RT 08 n1 -TYPE 1 i STA 99+94, 1.0' RT RIM REV -305.15 IE IN (N,S,E)-300.50 8M ElEV-300.99 IE IN (E)-297.86 IE-04JT"(W)- 30 tWT'(N)297.111 FINISH i GRADE T- T t 4' DI WATER MAIN 81 LF 89 0 PVC 4.00 L- MIN. 1.2jCLEARANCE EX GROUND - - - (TYP)-- ot-GRWND-(7YPJ 1- F1AISFi-( E tl+l a^r� m2 nnR 1...-+• 1 "01 ¢ A N 99+00 DRAINAGE PROFILE 100+00 312 308 304 300 296 292 101+00 ••* TO BE CONNECTED TO PERFORATED TIGHTUNE STUB OUT VERTICAL GRAPHIC SCALE 5 2.5 0 2.5 5 121521 1 inch - 5 ft. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 Inch = 20 ft. N 22o _ a, d o g a. a x x DESIGNED BY: Q. a x x REVISION DESCRIPTION 1 CHECKED BY: PROJ. MNGR: m z NE1/4, SEC. 22-T23N-R4E, W.M. w W SEQUENCE OF CONSTRUCTION: REFERENCE SHEET NO. EC1 SHEET 2 OF SHEETS 1. FLAG AND STAKE CLEARING OMITS. 2 INSTALL EROSION CONTROL MEASURES (SILT FENCE, ETC.) 3. FIELD LOCATE ALL UTILITIES. 4. INSTALL CONSTRUCTION ENTRANCE. 5. CLEAR AND GRUB SITE. 6. GRADE THE SITE. 7. INSTALL INFILTRATION TRENCHES, SANITARY SEWERS, STORM, WATER, AND OTHER SITE UTILITIES; PROVIDE CATCH BASIN INLET PROTECTION AT THE NEW INLET LOCATIONS. 6. CONSTRUCT BUILDING STRUCTURES. 9 PROJECT TE,. REMOVE OASAP ROVED BY TR CITY OF TUKWILASTABIUZATION OF ENTIRE CLEARING/GRADING AND TESL CONSTRUCTION NOTES: -- -_15 W _. 1 �' w .. ______,_.-_ - _ _-_._ w - -- - - -- w FOSTER SHORT PLAT 44XX / 4419 - S. 144TH STREET TUKWILA, WA 98168 CLEARING / GRADING AND TESC PLAN ?ti TV 144TH STA 505_+¢3 69= / _:1 ,. r N -Ts� ,, N _ 0 N 507+00 SD PVT. -RD. STA`9 z CLEARING UMITS 0 0 •,,,�) 0 © +00 .8 505+00 s• 144TH STREET a 504+00 - - -+- X506+00 \ �. o Pr 1 :�rj�� .r1 -? '- - a i!, ' ' ' W� .0`-'3 ' 5$ \ 1 .799 :. © 0 O 1 o.... (,.G,.) ,„ 1 ° • ��..._ _ 9 _ _.... � . - .. _ ass < � ( a� � ____il __ ...;&•_ •,.f"�re aT____ t�.� - ii�M1s �i-'� "--- � l ` ,'" t�r7 • 302 .. _ 'P�/lI1rpi n t t) I! t\ [I[� I AR F • I c I ! �i'' I 1 I I { , 4!; • 1'. M ,, ; . � �. 3° - �.. •1j r. 0 �1/ `\: ,_ �'�/ P� 6- a'\ moi • Y , \ 01 INSTALL SILT FENCE, SEE DETAIL 1, SHEET EC2. 02 INSTALL CONSTRUCTION ENTRANCE, SEE DETAIL 2, SHEET EC2. 03 INSTALL INLET PROTECTION, SEE DETAIL 3, SHEET EC2. ®EXISTING CONCRETE PAVEMENT TO REMAIN. 05 REMOVE EXISTING GARAGE & SHED. © REMOVE EXISTING ASPHALT/CONCRETE PAVEMENT. 07 REMOVE 12 LF EXISTING CEMENT CONCRETE CURB & GUTTER. 08 REMOVE 48 LF OF EXISTING CEMENT CONCRETE CURB & GUTTER. 9 REMOVE EXISTING DESK. 0 ® REMOVE EXISTING TREE. 10 EXISTING TREE TO BE SAVED, SEE DETAIL THIS SHEET. NOTES: N i. . 0 10 1 :c„.! I ' 1 LOT 9 !(7,o375Q Fr.) i 1 I I 1.,:4ii :a4�a Iq4� 74.$ tai V I 0, , ► .l ! b a jya I /'---------'- - 1 ,° - ��" .4•4•<4.• 41.4 �� ,-----_ ----- /, i _...'n,• f„.: Caws r4nne I n © I 1 TDAPORARY STOCKPILE AREA 1 I I, w'' `r ', J a ;: 'j `" C C z5.ar .� o \, / ,:E._� �(• HOUSE gam; 0 REMAIN \ I' 1-- I,.�!' ;F t ; :• \� 3 o _ 15.�PVP."DRtAINA EASEMENT: - s ` =-' 14• 587x49'10' ! i ' 10.0' SIDEWALK & I ` UTILITY EASEMENT I 4p1 • ; ;, �, 4\ . �� • 0 ') G : .• \ L o��-, - chain link fence s 5.3' west EASEMEN j t ? ;:` ; r/ {{ w.,<« / f •`: �,.t ,red K ; 4' ' hairi�� r� o Ia I >\ 1 I Yom. / Y. Y w/tax LOT 8 ro. /' LOT 1 +� ( (-..?•ten. I 0.7' eost\-I' (( •;� a °' (6,623 SQ. FT.) 1 i y`� \ ,� `� .• (17.453 SQ. FT.) \}} `,10. ' SIDEWALK & �\t�� •,' '\U11JTYEA�IEf 1 J 1 f �` Jj i 1 / n � a �) r est edge concrete is 191• west 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKNALA CONSTRUCTION NOTES. EARTHWORK VOLUME ESTIMATES \ ' \ S L ' 1 •` ) 25 I► , , \\ il E �"` II; Baba � I p s �;�,4 I :ate ' H'�w9 E BGS, L� Land Development and CMI Engineering Consultants 5130 South 166th Lane SeaTac, WA 98188 T (206) 229-6422 .&.•10.° E(6,903 j 6 \ VII r ��' / ".i LOT 2 SQ. FT.) �J est edge concrete is 1.1' west OS M 1; PTI ., lEA' SEWER EASEMENT �\1 I It .587,49•./0T.5'\ \ 1 . `\ 41 �. - u 1 ! F �� 1 ` r .., \:/ .E� r� : LOCATION CUT (CY) ACCESS ROAD/DRAINAGE FACILITY 975 RLL (CY) 185 4 \ 1k j \ to '71 e• \ 1 \ L6 f \ (6,598 t \ EX. GARAGE t' TO BE DEMOLISHED 7 SQ. .) \ , © ,;� I I C• , vs4��,n • I _ C .. I ' ( 0 t ' '� .at Y. r ./,... 1 !' 1 4�it9�/!+/i4 0 a .�4''- I1 \ •:7"51'43E 44.14' \ © .3', •:7.5143E 8230' �_ ,, r -- -�• \ ISSUE DATE 9-05-2013 DESIGNED BY: H. H. PHAN NVHd 'H 'H :AB NMV11O CHECKED BY: PROD. MNGR: a CI CI Lu , I Fa �6 \ t,., lao,� \ w % / �4 a t . Ran:. i9 -a[) t •4� 44 44 4 Csf .. SET FENCE CIRCUMFERENCE .r EQUAL TO OR GREATER THAN CIRCUMFERc. E OF ORIPLINE - _ } / 1 0 �kt `�.�I�� ' 66ar 1 v / \N� a.` 8 ` \ L �� 4 \ oa \ `� ` \ `\\ \ \ 1 LO 6 i. " (6,629 sQ. FT.) I F ,a l�• o RVT. T © HAMMERHEAd � ,'j j y 1 j' $1 I I I ~ RD. STA 12+19.04= STA 104+00 1 I I g 0 LO 5 7 (6,578 . FT.) o 11 1oz.oa —oo soc 10.0' SIDEWALI( & 1 UTILITY EASEMENT -1, O --- --0000r 1 - 4 34" ©I — 305.00_0 - --_,_ N01'0a'SYE n 5: ORARY STOCKPILE AREA ( •• ' cI / a LOT 3 `,2,' (7,597 SQ. FT.) 9 // + y�,, 1 I o JOB NO. R09400 6 FF. HIGH CHAIN LINK FENCE♦O 70 ENCLOSE TREE ENTIRELY CONCRETE PIER ',.r .47* b4 14 ±1♦*♦�♦ ♦�• : , ♦♦�y+♦� . . � ♦♦♦�� ♦�.*. ♦• ♦ s 10i♦1. .�♦♦j ♦♦� ♦ REVISION DESCRIPTION I •404 ♦ • +♦ •1 1. ro74,,,,,,,. ♦♦:,.# ♦♦♦ 4. .: e ♦♦♦4 41 '�0.' 1 I I 1 ._ 6. \ 644w' ' i ee ." Z. ,.16.00. \ 6�.z6' _. '�-•�. TREE PROTECTION MEASURES <, , 587.5143E 0 15 I 37.76-' ° -' y 14 I I b -._ - - 13 SCALE NONE HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 A 1 inch a Han Phan L\Working\R094O0 — Foster Short Plat\CADD\Drawings\R09400—PS—EC2.dwg Layout Name: Layoutl Aug 31, 2013 — 6:01pm JOINTS IN FILTER FABRIC SHALL BE SPUCED AT POSTS. USE STAPLES. WIRE RINGS, OR EQUIVALENT TO ATTACH FABRIC TO POSTS. 2' X 2' X 14 GA. WIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED. _J1 IL 11 11 u u 6' MAX POST SPACING MAY BE INCREASED TO 8' IF WIRE BACKING IS USED 2' X 4' WOOD POSTS. STEEL FENCE POSTS, REBAR, OR EQUIVALENT NOTES: .01 FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE. FILTER FABRIC hUNDI�(��j% STURBED GROUND v e MIN BACKFILL TRENCH VATH NATIVE SOIL OR 3/4- - 1.5. WASHED GRAVEL DESIGN AND INSTALLATION SPECIFICATIONS 1. THE GEOTEXTILE USED MUST MEET THE STANDARDS USTED BELOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE. ADS (ASTM 0-4751) = 30-100 SIEVE SIZE (0.60-0.15mm) FOR SLIT FILM 50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS WATER PERMITTIVITY (ASTM D-4491) = 0.02 SEC -1 MIN. GRAB TENSILE STRENGTH (ASTM D-4632) = 180 LBS MIN. FOR EXTRA STRENGTH FABRIC 100 LBS MIN. FOR STANDARD STRENGTH FABRIC GRAB TENSILE ELONGATION (ASTM D-4632)= 30X MAX. ULTRAVIOLENT RESISTANCE (ASTM D-4355)= 70X MIN. 2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY 8E REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANT A STRONGER FENCE 3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL BE NO STEEPER THAN 2H:1V. SILT FENCE DETAIL CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PER KING COUNTY SWDM FIGURE D.3.3.A SCALE NONE MAINTENANCE STANDARDS: 1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE. THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. 3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCING CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNEUZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE AND OR REMOVE THE TRAPPED SEDIMENT. 4. SEDIMENT MUST BE REMOVED WHEN IT IS 6' HIGH. 5. IF THE FILTER FABRIC HAS DETERIORATED DUE TO THE ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. MAINTENANCE STANDARDS: 1. ANY ACCUMULATED SEDIMENT ON OR AROUND INLET PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED WITH WATER, AND ALL SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE 2. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE THIRD OF THE AVAILABLE STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY. 3. REGULAR MAINTENANCE IS CRITICAL FOR CATCH BASIN PROTECTION. UNUKE MANY FORMS OF PROTECTION THAT FAIL GRADUALLY, CATCH BASIN PROTECTION WILL FAIL SUDDENLY AND COMPLETELY IF NOT MAINTAINED PROPERLY. CATCH BASIN GRATE to ■ oat solos !'tiro 1■1■.1■ ■i■I■1■,I■ill■I■I■I■f OVERFLOW FILTER MEDIA FOR DEWATERING POROUS BOTTOM SOLID WALLS REFERENCE SHEET NO. EC2 SHEET 3 OF 15 SHEETS ce 0 (1) c w H N 0 LL TESC DETAILS CATCH BASIN INSERT CATCH BASIN SEDIMENT CONTROL NOTES: THIS DETAIL IS ONLY SCHEMATIC. ANY INSERT IS ALLOWED THAT HAS A MIN. 0.5 CUBIC FEET OF STORAGE WITH THE MEANS TO DEWATER THE STORED SEDIMENT, PROVIDE AN OVERFLOW, AND CAN BE EASILY MAINTAINED. INLET PROTECTION DETAIL PER KING COUNTY SWDM FIGURE 0.3.5.F SCALE NONE CONTRACTOR TO PROTECT MUD FROM BEING TRACKED ONTO THE PUBUC ROAD / NEW ASPHALT PAVEMENT EDGE OF EXISTING PAVEMENT • 100' MIN. INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE / R=25' MIN. DITCH AS PER KING COUNTY ROAD STANDARDS NOTES: e TO 8' QUARRY SPALLS GEOTEXTILE UNDERUNE 15' MIN. PROVIDE FULL WIDE OF INGRESS/EGRESS AREA AS PER KING COUNTY ROAD STANDARDS, DRIVEWAYS SHALL BE PAVED TO THE EDGE OF RIGHT-OF-WAY PRIOR TO INSTALLATION OF THE CONSTRUCTION ENTRANCE TO AVOID DAMAGING OF THE ROADWAY. IT IS RECOMMENDED THAT THE ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE ROAD. MAINTENANCE STANDARDS= 1. QUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. 2. IF THE ENTRACE IS NOT PREVENTING SEDIMENT FROM BEGIN TRACTED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE ENTRANCE, OR THE INSTALLATION OF A WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON THE AREA COVERED WITH CRUSHED ROCK, AND WASH WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND. 3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED OR STABIUZED ON -SIZE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET, EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBUC SAFETY. IF IT IS NECESSARY TO WASH THE STREETS, THE CONSTRUCTION OF A SMALL SUMP SHALL BE CONSIDERED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP. 4. ANY ROCK SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY. 5. IF VEHICLES ARE ENTERING OR EXISTING THE SITE AT POINTS OTHER THAT THE CONSTRUCTION ENTRANCE(S), FENCING (SECTION 5.4.1) SHALL BE INSTALLED ON CONTROL TRAFFIC. CONSTRUCTION ENTRANCE DETAIL PER KING COUNTY SWDM FIGURE D.3.4.A SCALE NONE 0 N 0 c+ z 0 CC Q. a s DESIGNED BY: a x s 2 s a REVISION DESCRIPTION 0 Foster Short Plat Level 2 Detention Calculations 6 -Sep -13 Note 1: PGIS (pollution generating surface) includes approximately 400 - 600 sq ft per lot for driveway/parking and entire SF of access road. Note 2: Roof areas for new Tots and driveways infiltrated; therefore those areas are not included in the developed condition modeling per sizing credits. Note 3: Private Road constructed with permeable pavement; Note 4: Lot 1 is not a target surface; therefore is not included in the model KCRTS INPUT (EXISTING CONDITION) Impervious Area (SF) Existing Proposed Till GRASS Interval Size = (50 year event - 50% 2 year event)/(# of intervals - 1) ACRE IMPERVIOUS 0.027 ACRE Existing House 3,998 ACRE Existing Garage (to be demolished) 1,390 cfs Existing Driveway & Patio 2,818 cfs 25 -year peak flow 0.091 cfs New Lots (#2 - #9) Roof, Infiltrated 0.108 14,100 New Lots (#2 - #9) Driveway, Infiltrated 0.116 3,100 KCRTS INPUT (DEVELOPED CONDITION, BEFORE DETENTION) Private Road (Pervious Pavement) grass 3,645 Private Road (Pervious Pavement) pavement 3,645 Shoulder Improvement & Sidewalk 0.395 1,325 TOTAL 1.440 ACRE Total Impervious Surface 8,206 22,170 Total PGIS 1 2,818 6,745 Total Pervious Surface 54,517 33,809 50 -year peak flow 0.249 cfs Total Project Size 62,723 62,723 Note 1: PGIS (pollution generating surface) includes approximately 400 - 600 sq ft per lot for driveway/parking and entire SF of access road. Note 2: Roof areas for new Tots and driveways infiltrated; therefore those areas are not included in the developed condition modeling per sizing credits. Note 3: Private Road constructed with permeable pavement; Note 4: Lot 1 is not a target surface; therefore is not included in the model KCRTS INPUT (EXISTING CONDITION) Till FOREST 1.440 ACRE Till GRASS Interval Size = (50 year event - 50% 2 year event)/(# of intervals - 1) ACRE IMPERVIOUS 0.027 ACRE TOTAL 1.440 ACRE 2 -year peak flow 0.040 cfs 10 -year peak flow 0.070 cfs 25 -year peak flow 0.091 cfs 50 -year peak flow 0.108 cfs 100 -year peak flow 0.116 cfs KCRTS INPUT (DEVELOPED CONDITION, BEFORE DETENTION) Till GRASS 0.776 ACRE IMPERVIOUS 0.269 ACRE Infiltrated (not in model) 0.395 ACRE TOTAL 1.440 ACRE 2 -year peak flow 0.103 cfs 10 -year peak flow 0.141 cfs 25 -year peak flow 0.165 cfs 50 -year peak flow 0.249 cfs 100 -year peak flow 0.291 cfs 0.175 KCRTS Detention Pond Inputs: Number of Intervals 30 First Interval = 50% of existing 2 -year event 0.020 Interval Size = (50 year event - 50% 2 year event)/(# of intervals - 1) 0.003 Qmax for orifice 1 = 4/3 of 50% 2 year event 0.027 Infiltration Bottom Area, SF (per KCSWM for fine sand) Bottom Area = 75 SF per 1000 SF new impervious surface FIGURE C.2.2.A TYPICAL TRENCH INFILTRATION SYSTEM 12" PLAN VIEW NTS 4" rigid or 6" flexible perforated pipe infiltration trench PLAN VIEW NTS :o ; Q 4" rigid or 6" flexible perforated pipe overflow splash block roof drain sump w/solid lid roof drain 7747,w,, 'A(.:1)aVAYA.w),Y,vr, 1112.1-4 6_11 1 1/2"-3/4" ° ° a: %70 i11' nun washed rock 9,a° 'min 5.0' min fine mesh \— CB sump w/solid lid ennaan varies A filter fabric o o o c a o L -la 24" V°7o SECTION A NTS compacted backfill 4" rigid or 6" flexible perforated pipe washed rock 1 1/2%314" 2009 Surface Water Design Manual - Appendix C 1/9/2009 C-45 CONSTRUCTION PRODUCTS INC. Size and Cost Estimate Prepared by Kathryn Thomason on January 4, 2010 Foster Short Plat — Stormwater Treatment System Tukwila, WA Information provided: • Total contributing area = 0.195 acre • Impervious area = 0.195 acre • Water quality flow, Qwq = 0.0558 cfs • Peak hydraulic flow rate, —peak = 0.230 cfs • Presiding agency = City of Tukwila Assumptions: • Media = ZPG cartridges • Cartridge Height = 18" • Cartridge Flow rate = 15 gpm • Drop required from RIM to outlet = 2.3' minimum Size and cost estimates: The StormFilter is a flow -based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by using 60% of the developed 2 - year flow rate using KCRTS. The StormFilter for this site was sized based on treatment flow rate of 0.0558 cfs. To accommodate this treatment flow rate, CONTECH Stormwater Solutions recommends using a steel two -cartridge CatchBasin StormFilter (see attached detail). The estimated cost of this size system is $9.800, complete and delivered to the jobsite. The contractor is responsible for setting the CatchBasin StormFilter and all external plumbing. The steel CatchBasin StormFilter has an internal bypass capacity of 1.0 cfs, which does not exceed the peak flows from this site. ©2008 CONTECH Construction Products Inc. 11835 NE Glenn Widing Dr., Portland OR 97220 www.contech-cpi.com Toll-free: 800.548.4667 Fax: 800.561.1271 Page 1 of 1 TS -P026 King County Rational Method Q = CX IRXA Rational Method Per 1998 King County Surface Water Manual Project: Designed By: Date: Foster Short Plat Anna Nguyen, P.E. 19 -Jan -10 Legend Q = peak flow rate in cubic feet per second C = runoff coefficients, for pavements & roofs C = 0.90, lawns C = 0.25 A = contributing area in acres IR = rainfall intensity in inches per hour IR = (PR) x (IR) PR = precipitation for the 24-hour duration storm event as interpolated from isopluvial maps IR = (aR) x (Tc) (-bR) Tc= time of concentration to initial inlet=5 min aR and bR = coefficients used to adjust the equation for the design storm return frequency R Manning's Equation for Pipe Capacity Calculations 8" ADS N12 @ 4.0% Diameter of pipe (inches) Percent Full Flow (%, see chart) Slope of Pipe (%) Manning's Coefficient Hydraulic Radius Area in Flow (SF) Pipe Capacity (cfs) 95 4.0 Hydraulic Radius: 95% Full Flow = 75% Full Flow = 50% Full Flow 25% Full Flow = 0.191 0.201 0.167 0.098 0.014 0.191 0.343 Area in Flow: 95% full -flow = 75% full -flow 50% full -flow 25% full -flow = 0.343 0.281 0.175'' 0.068 2.4176 Velocity 7.06 FPS entry block Calculated values King County Stormwater Management Manual Table 3.2.1 B Tc IR Design Storm Event aR bR 2 years 1.58 0.58 5.0 0.62 5 years 2.33 0.63 5.0 0.85 10 years 2.44 0.64 5.0 0.87 25 years 2.66 0:65 5.0 0.93 50 years 2.75 0.65 5.0 0.97 100 years 2.61 0.63 5.0 0.95 Event PR IR IR 2 yr 2.00 0.62 1.24 10 yr 2.90 0.87:, .. 2.53 25 yr 3.40 0.93 3.18 100 yr 4.00 0.95'` 3.79` Basin Impervious - C value Pervious C value Impervious Area (sf) Pervious Area (sf) Impervious - Area (ac) Pervious Area (ac) Q10 Q25 Q100 private road 0.90 0.25 9,800 0.22 0.00 0.51 0.64 0.77 Total 0.51 0.64 0.77 Runoff coefficients "C" values from King County Stormwater Management Manual Table 3.2.1A, Impervious area assumed roof and pavement, Pervious area assumed lawns. Retention/Detention Facility Type of Facility: Detention Tank Tank Diameter: 7.00 ft Tank Length: 100.00 ft Effective Storage Depth: 6.00 ft Stage 0 Elevation: 0.00 ft Storage Volume: 3511. cu. ft Riser Head: 6.00 ft Riser Diameter: 18.00 inches Number of orifices: 2 Full Head Pipe Orifice # Height Diameter Discharge Diameter (ft) (in) (CFS) (in) 1 0.00 0.60 0.024 2 2.00 1.10 0.066 4.0 Top Notch Weir: None Outflow Rating Curve: None Stage Elevation Storage Discharge Percolation (ft) (ft) (cu ft) (ac -ft) (cfs) (cfs) 0.00 0.00 0. 0.000 0.000 0.00 0.01 0.01 5. 0.000 0.001 0.00 0.02 0.02 10. 0.000 0.001 0.00 0.03 0.03 15. 0.000 0.002 0.00 0.04 0.04 20. 0.000 0.002 0.00 0.05 0.05 25. 0.001 0.002 0.00 0.15 0.15 76. 0.002 0.004 0.00 0.25 0.25 128. 0.003 0.005 0.00 0.35 0.35 183. 0.004 0.006, 0.00 0.45 0.45 239. 0.005 0.007 0.00 0.55 0.55 296. 0.007 0.007 0.00 0.65 0.65 355. 0.008 0.008 0.00 0.75 0.75 415. 0.010 0.008 0.00 0.85 0.85 476. 0.011 0.009 0.00 0.95 0.95 539. 0.012 0.010 0.00 1.05 1.05 602. 0.014 0.010 0.00 1.15 1.15 666. 0.015 0.010 0.00 1.25 1.25 731. 0.017 0.011 0.00 1.35 1.35 797. 0.018 0.011 0.00 1.45 1.45 863. 0.020 0.012 0.00 1.55 1.55 930. 0.021 0.012 0.00 1.65 1.65 998. 0.023 0.013 0.00 1.75 1.75 1066. 0.024 0.013 0.00 1.85 1.85 1135. 0.026 0.013 0.00 1.95 1.95 1204. 0.028 0.014 0.00 2.00 2.00 1238. 0.028 0.014 0.00 2.01 2.01 1245. 0.029 0.014 0.00 2.02 2.02 1252. 0.029 0.015 0.00 2.03 2.03 1259. 0.029 0.016 0.00 2.05 2.05 1273. 0.029 0.018 0.00 2.06 2.06 1280. 0.029 0.020 0.00 2.07 2.07 1287. 0.030 0.023 0.00 2.08 2.08 1294. 0.030 0.023 0.00 2.09 2.09 1301. 0.030 0.024 0.00 2.19 2.19 1370. 0.031 0.029 0.00 2.29 2.29 1440. 0.033 0.033 0.00 2.39 2.39 1510. 0.035 0.036 0.00 2.49 2.49 1580. 0.036 0.038 0.00 2.59 2.59 1650. 0.038 0.041 0.00 2.69 2.69 1720. 0.039 0.043 0.00 2.79 2.79 1790. 0.041 0.046 0.00 2.89 2.89 1859. 0.043 0.048 0.00 2.99 2.99 1929. 0.044 0.050 0.00 3.09 3.09 1998. 0.046 0.051 0.00 3.19 3.19 2067. 0.047 0.053 0.00 3.29 3.29 2135. 0.049 0.055 0.00 3.39 3.39 2203. 0.051 0.057 0.00 3.49 3.49 2271. 0.052 0.058 0.00 3.59 3.59 2338. 0.054 0.060 0.00 3.69 3.69 2404. 0.055 0.061 0.00 3.79 3.79 2469. 0.057 0.063 0.00 3.89 3.89 2534. 0.058 0.064 0.00 3.99 3.99 2598. 0.060 0.066 0.00 4.09 4.09 2660. 0.061 0.067 0.00 4.19 4.19 2722. 0.062 0.069 0.00 4.29 4.29 2783. 0.064 0.070 0.00 4.39 4.39 2843. 0.065 0.071 0.00 4.49 4.49 2901. 0.067 0.073 0.00 4.59 4.59 2958. 0.068 0.074 0.00 4.69 4.69 3013. 0.069 0.075 0.00 4.79 4.79 3067. 0.070 0.076 0.00 4.89 4.89 3119. 0.072 0.077 0.00 4.99 4.99 3169. 0.073 0.079 0.00 5.09 5.09 3217. 0.074 0.080 0.00 5.19 5.19 3263. 0.075 0.081 0.00 5.29 5.29 3307. 0.076 0.082 0.00 5.39 5.39 3348. 0.077 0.083 0.00 5.49 5.49 3386. 0.078 0.084 0.00 5.59 5.59 3420. 0.079 0.085 0.00 5.69 5.69 3451. 0.079 0.086 0.00 5.79 5.79 3478. 0.080 0.087 0.00 5.89 5.89 3498. 0.080 0.088 0.00 5.99 5.99 3511. 0.081 0.089 0.00 6.00 6.00 3511. 0.081 0.090 0.00 6.10 6.10 3511. 0.081 0.553 0.00 6.20 6.20 3511. 0.081 1.400 0.00 6.30 6.30 3511. 0.081 2.490 0.00 6.40 6.40 3511. 0.081 3.790 0.00 6.50 6.50 3511. 0.081 5.260 0.00 6.60 6.60 3511. 0.081 6.690 0.00 6.70 6.70 3511. 0.081 7.220 0.00 6.80 6.80 3511. 0.081 7.710 0.00 6.90 6.90 3511. 0.081 8.170 0.00 7.00 7.00 3511. 0.081 8.610 0.00 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 Hyd Inflow Outflow Target ******* 1 2 3 4 5 6 7 8 0.29 0.13 0.13 0.17 0.14 0.10 0.09 0.08 Calc 0.28 0.08 0.07 0.06 0.07 0.05 0.03 0.01 3511. 3511. 3511. 3511. 3511. 3511. 3511. 3511. Peak Stage 6.04 5.46 4.64 3.75 4.68 2.93 2.33 1.51 0.081 9.020 0.081 9.420 0.081 9.800 0.081 10.170 0.081 10.530 0.081 10.870 0.081 11.200 0.081 11.520 Elev 6.04 5.46 4.64 3.75 4.68 2.93 2.33 1.51 Route Time Series through Facility Inflow Time Series File:dev_foster.tsf Outflow Time Series File:rdout 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Storage (Cu -Ft) (Ac -Ft) 3511. 0.081 3374. 0.077 2984. 0.069 2444. 0.056 3008. 0.069 1890. 0.043 1467. 0.034 903. 0.021 Inflow/Outflow Analysis Peak Inflow Discharge: 0.291 CFS at 6:00 on Jan Peak Outflow Discharge: 0.276 CFS at 9:00 on Jan Peak Reservoir Stage: 6.04 Ft Peak Reservoir Elev: 6.04 Ft Peak Reservoir Storage: 3511. Cu -Ft 0.081 Ac -Ft 9 in Year 8 9 in Year 8 Flow Duration from Time Series File:rdout.tsf Cutoff Count Frequency CDF ExceedenceProbability CFS o 0 0 0 0 8 0.001 43250 70.532 70.532 29.468 0.295E+00 0.004 5000 8.154 78.686 21.314 0.213E+00 0.006 3804 6.204 84.889 15.111 0.151E+00 0.008 3871 6.313 91.202 8.798 0.880E-01 0.011 2027 3.306 94.507 5.492 0.549E-01 0.013 1313 2.141 96.649 3.351 0.335E-01 0.015 1115 1.818 98.467 1.533 0.153E-01 0.018 153 0.250 98.717 1.283 0.128E-01 0.020 106 0.173 98.889 1.111 0.111E-01 0.022 48 0.078 98.968 1.032 0.103E-01 0.025 87 0.142 99.110 0.890 0.890E-02 0.027 83 0.135 99.245 0.755 0.755E-02 0.029 53 0.086 99.331 0.669 0.669E-02 0.031 36 0.059 99.390 0.610 0.610E-02 0.034 45 0.073 99.463 0.537 0.537E-02 0.036 45 0.073 99.537 0.463 0.463E-02 0.038 30 0.049 99.586 0.414 0.414E-02 0.041 24 0.039 99.625 0.375 0.375E-02 0.043 33 0.054 99.679 0.321 0.321E-02 0.045 20 0.033 99.711 0.289 0.289E-02 0.048 21 0.034 99.746 0.254 0.254E-02 0.050 21 0.034 99.780 0.220 0.220E-02 0.052 31 0.051 99.830 0.170 0.170E-02 0.055 13 0.021 99.852 0.148 0.148E-02 0.057 13 0.021 99.873 0.127 0.127E-02 0.059 12 0.020 99.892 0.108 0.108E-02 0.062 14 0.023 99.915 0.085 0.848E-03 0.064 7 0.011 99.927 0.073 0.734E-03 0.066 3 0.005 99.932 0.068 0.685E-03 0.069 6 0.010 99.941 0.059 0.587E-03 0.071 10 0.016 99.958 0.042 0.424E-03 0.073 6 0.010 99.967 0.033 0.326E-03 0.076 11 0.018 99.985 0.015 0.147E-03 0.078 2 0.003 99.989 0.011 0.114E-03 0.080 1 0.002 99.990 0.010 0.978E-04 0.083 4 0.007 99.997 0.003 0.326E-04 Anna Nguyen From: Wilgus, Mark <Mark.Wilgus@kingcounty.gov> Sent: Thursday, May 02, 2013 1:18 PM To: 'Anna Nguyen' Subject: RE: 2009 KCSWM clarification Anna, see my edits in yellow. Note that I can't confirm what the actual SF of target surfaces are for your project—only that the manual clearly defines target surfaces as you've described. Let me know if you want to discuss further. From: Anna Nguyen [mailto:anna@theconceptgrp.com] Sent: Thursday, May 02, 2013 12:34 PM To: Wilgus, Mark Subject: RE: 2009 KCSWM clarification Mark, Thank you for taking the time to discuss the Target Surface Code interpretation with me on the phone this morning. I wanted to recap our conversation for your confirmation. We determined per the 2009 KCSWDM that the existing impervious surface of Lot 1 is not a target surface for Flow Control because it is NOT new or replaced. Furthermore, the Conversation Flow Control is only required to mitigate existing impervious surfaces that have been added since January 8, 2001. Based on this determination, we discussed the fact that the KCRTS model for this project should only include the 23,000 SF of area within Lot 2, 3, and 4 (rather than the 30,000 SF of the entire project site). The flow control facility should be sized using all target surfaces (new and replaced imp and new pervious) restricting to Level 2 duration control with forested as pre -developed condition. Any ;non -targeted surfaces that are routed to facility (if any) should follow bypass rules in the design manual We also discussed the requirement to apply the historical conditions to the existing conditions modeling in KCRTS. You interpreted this requirement to only be applied towards Target Surfaces subject to flow control. Again, since Lot 1 existing impervious surface is not a target surface for FC, it should be excluded in the stormwater flow control model. Per the 2009 KCSWDM Section 1.2.3, flow control facilities are not required for existing impervious surface that is NOT new or replaced: "onsite flozv control ficilities [is required]... to mitigate the impacts of storm and surface water runo�`'generated by new impervious sulftce, new pervious suffice, and replaced impervious sur, face." 1.2.3 CORE REQUIREMENT #3: FLOW CONTROL R E n u E Y E N T All proposed projects, including redevelopment projects, must provide onsite flow control facilities or flow control BMPs or both to mitigate the impacts of storm and surface water runoff generated by new impervious surface, new pervious surface. and replaced impervious surface targeted for flow mitigation as specified in the following sections. Flow control facilities must be provided and designed to perform as specified by the area -specific flow control facility requirement in Section 1.2.3.1 (p. 1-35) and in accordance with the applicable flow control facility implementation requirements in Section 1.2.3.2 (p. 1-45). Flow control BMPs must be provided as directed by the flow control BMPs requirement in Section 1.2.3.3 (p. 1-50) and applied as specified by the flow control BMP requirements in Section 5.2. Furthermore, the Threshold Discharge for Lot #1 was not modeled in the KCRTS model because the existing impervious surface is NOT a target discharge area as defined on page 1-41 of the 2009 KCSWM, "...[only] existing impervious surf ce added since January 2001 [must be mitigated]." King County property tax records i document that the existing house was built in 1947; therefore the existing target surface does not require flow control mitigation. Target Surfaces Facilities in Conservation Flow Control Areas27 must mitigate (either directly or in effect) the runoff from the following target developed surfaces within the threshold discharge area for which the facility is required: 1. New impervious surface that is not fully dispersed per the criteria on Page 1-46. For individual lots within residential subdivision projects, the extent of new impervious surface shall be assumed as specified in Chapter 3. Note, any new impervious surface such as a bridge that spans the ordinary high water of a stream, pond, or lake may be excluded as a target surface if the runoff from such span is conveyed to the ordinary high water area in accordance with Criteria (b), (c), (d), and (e) of the "Direct Discharge Exemption" (p 1-37). 2. New pervious surface that is not fully dispersed. For individual lots within residential subdivision projects, the extent of new pervious surface shall be assumed to be the entire lot area, except the assumed impervious portion and any portion in which native conditions are preserved by covenant, tract, or easement. In addition, the new pervious surface on individual lots shall be assumed to be 100% grass if located within the Urban Growth Area (UGA) and 50% grass/50% pasture if located outside the UGA. 3. Existing impervious surface added since January 8, 2001 that is not fully dispersed and not yet mitigated with a County -approved flow control facility or flow control BMP. Note: January 8, 2001 is. the effective date of the ESA 4(d) Rule for Puget Sound Chinook salmon. Anna Nguyen, P.E. The Concept Group 1 Technical and Engineering Consultants 4701 SW Admiral Way, Ste #353 Seattle, WA 98116 206.446.1291 Website: www.TheConceptGrp.com No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2904 / Virus Database: 3162/6292 - Release Date: 05/02/13 2 Foster Short Plat -Technical Information Report Sept 2013 Appendix C Erosion Control R09400 - The Concept Group Appendices D.3.2 COVER MEASURES D.3.2.4 PLASTIC COVERING Code: PC Symbol: Purpose Plastic covering provides immediate, short-term erosion protection to slopes and disturbed areas. Conditions of Use 1. Plastic covering may be used on disturbed areas that require cover measures for less than 30 days. 2. Plastic is particularly useful for protecting cut and fill slopes and stockpiles. Note: The relatively rapid breakdown of most polyethylene sheeting makes it unsuitable for long-term applications. 3. Clear plastic sheeting may be used over newly -seeded areas to create a greenhouse effect and encourage grass growth. Clear plastic should not be used for this purpose during the suunmmer months because the resulting high temperatures can kill the grass. 4. Due to rapid runoff caused by plastic sheeting, this method shall not be used upslope of areas that might be adversely impacted by concentrated runoff. Such areas include steep and/or unstable slopes. Note: There have been many problems with plastic, usually attributable to poor installation and maintenance. However; the material itself can cause problems, even irhen correctly installed and maintained, because it generates high -velocity runoff and breaks down quickly due to ultraviolet radiation. In addition, if the plastic is not completely removed, it can clog drainage system inlets and outlets. It is highly recommended that alternatives to plastic sheeting be used whenever possible and that its use be limited. Design and Installation Specifications 1. See Figure D.3.2.D for details. 2. Plastic sheeting shall have a minimum thickness of 0.06 millimeters. 3. If erosion at the toe of a slope is likely, a gravel bene, riprap, or other suitable protection shall be installed at the toe of the slope in order to reduce the velocity of nunoff. FIGURE D.3.2.D PLASTIC COVERING • 10. MAX. TIRES. SANDBAGS. OR EQUIVALENT MAY BE USED TO WEIGHT PIASTIC SEAMS BETWEEN SHEETS MUST OVERLAP A MINIMUM OF 12' AND BE WEIGHTED OR TAPED TOE IN SHEETING IN MINIMUM 4'X4' TRENCH 10' MAX. PROVIDE ENERGY 06SIPATJON AT TOE WHEN NEEDED 2009 Surface Water Design Manual — Appendix D D-17 1/9/2009 SECTION D.3 ESC MEASURES D.3.3 PERIMETER PROTECTION Perimeter protection to filter sediment from sheetwash shall be located downslope of all disturbed areas and shall be installed prior to upslope grading. Perimeter protection includes the use of vegetated strips as well as, constructed measures, such as silt fences, fiber rolls, sand/gravel barriers, blush or rock filters, triangular silt dikes and other methods. During the wet season. 50 linear feet of silt fence (and the necessary stakes) per acre of disturbed area insist be stockpiled on site. Purpose: The purpose of perimeter protection is to reduce the amount of sediment transported beyond the disturbed areas of the construction site. Perimeter protection is primarily a backup means of sediment control. Most, if not all, sediment -laden water is to be treated in a sediment trap or pond. The only circumstances in which perimeter control is to be used as a primary means of sediment removal is when the catchment is very small (see below). When to Install: Perimeter protection is to be installed prior to any upslope clearing and grading. Measures to Use: The above measures may be used interchangeably and are not the only perimeter protection measures available. If surface water is collected by an interceptor dike or swale and routed to a sediment pond or trap, there may be no need for the perimeter protection measures specified in this section. Criteria for Use as Primary Treatment: At the botutdaiy of a site, perimeter protection may be used as the sole form of treatment when the flowpath meets the criteria listed below. If these criteria are not met, perimeter protection shall only be used as a backup to a sediment trap or pond. Average Slope Slope Percent Flowpath Length 1.5H:1V or less 67% or less 100 feet 2H:1 V or less 50% or less 115 feet 4H:1V or less 25% or less 150 feet 6H:1 V or less 16.7% or less 200 feet I OH:1 V or less 10% or less 250 feet D.3.3.1 SILT FENCE Code: SF Symbol: X X X XX Purpose Use of a silt fence reduces the transport of coarse sediment from a construction site by providing a temporary physical battier to sediment and reducing the runoff velocities of overland flow. Conditions of Use 1. Silt fence may be used downslope of all disturbed areas. 2. Silt fence is not intended to treat concentrated flows, nor is it intended to treat substantial amounts of overland flow. Any concentrated flows must be conveyed through the drainage system to a sediment trap or pond. The only circumstance in which overland flow may be treated solely by a silt fence, rather than by a sediment trap or pond, is when the area draining to the fence is small (see "Criteria for Use as Primary Treatment" on page D-30). Design and Installation Specifications 1. See Figure D.3.3.A and Figure D.3.3.B for details. 1/9/2009 2009 Surface Water Design Manual — Appendix D D-30 D.3.3 PERIMETER PROTECTION 2. The geotextile used must meet the standards listed below. A copy of the manufacturer's fabric specifications must be available on site. AOS (ASTM D4751) 30-100 sieve size (0.60-0.15 mm) for slit film 50-100 sieve size (0.30-0.15 mm) for other fabrics Water Permittivity (ASTM D4491) 0.02 sec -1 minimum Grab Tensile Strength (ASTM D4632) 180 lbs. min. for extra strength fabric 100 lbs. min. for standard strength fabric Grab Tensile Elongation (ASTM D4632) 30% max. Ultraviolet Resistance (ASTM D4355) 70% min. 3. Standard strength fabric requires wire backing to increase the strength of the fence. Wire backing or closer post spacing inay be required for extra strength fabric if field performance warrants a stronger fence. 4. Where the fence is installed, the slope shall be no steeper than 2H:1 V. 5. If a typical silt fence (per Figure D.3.3.A) is used, the standard 4 x 4 trench may not be reduced as long as the bottom 8 inches of the silt fence is well buried and secured in a trench that stabilizes the fence and does not allow water to bypass or undermine the silt fence. Maintenance Standards 1. Any damage shall be repaired inunediately. If concentrated flows are evident uphill of the fence, they must be intercepted and conveyed to a sediment trap or pond. 3. It is important to check the uphill side of the fence for signs of the fence clogging and acting as a barrier to flow and then causing channelization of flows parallel to the fence. If this occurs, replace the fence or remove the trapped sediment. 4. Sediment must be removed when the sediment is 6 inches high. 5. If the filter fabric (geotextile) has deteriorated due to ultraviolet breakdown, it shall be replaced. FIGURE D.3.3.A SILT FENCE JOINTS IN FILTER FABRIC SHALL BE SPLICED AT POSTS. USE STAPLES, WIRE RINGS. OR EQUIVALENT TO ATTACH FABRIC TO POSTS. INIESINSOMM I I: ggll�mmamsas�ma: I I II = o :::�. a: 11= --urn - f 1111111 111'11 6' MAX. POST SPACING MAY BE INCREASED TO 8" IF WIRE BACKING IS USED NOTE: FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE 2"x2" BY 14 Ga. WIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED FILTER FABRIC MINIMUM 4"x4" TRENCH BACKFILL TRENCH WITH NATIVE SOIL OR 3/4"-1.5" WASHED GRAVEL 2"x4" WOOD POSTS. STEEL FENCE POSTS, REI3AR, OR EQUIVALENT 2009 Surface Water Design Manual — Appendix D D-31. 1/9/2009 D.3.4 TRAFFIC AREA STABILIZATION D.3.4.1 STABILIZED CONSTRUCTION ENTRANCE Code: CE Symbol: Purpose Construction entrances are stabilized to reduce the amoiutt of sediment transported onto paved roads by motor vehicles or runoff by constructing a stabilized pad of quant' spalls at entrances to construction sites. Conditions of Use Construction entrances shall be stabilized wherever traffic will be leaving a construction site and traveling on paved roads or other paved areas within 1.000 feet of the site. Access and exits shall be limited to one route if possible, or two for linear projects such as roadway where more than one access/exit is necessary for maneuvering large equipment. Design and Installation Specifications 1. See Figure D.3.4.A for details. A separation geotextile shall be placed under the spalls to prevent fine sediment from pumping up into the rock pad. The geotextile shall meet the following standards: Grab Tensile Strength (ASTM 04751) 200 psi min. Grab Tensile Elongation (ASTM D4632) 30% max. Mullen Burst Strength (ASTM D3786 -80a) 400 psi min. AOS (ASTM D4751) 20-45 (U.S. standard sieve size) 3. Hog fuel (wood based mulch) may be substituted for or combined with quarry spalls in areas that will not be used for permanent roads. The effectiveness of hog fuel is highly variable, but it has been used successfully on many sites. It generally requires more maintenance than quarry spalls. Hog fuel is not reconunended for entrancestabilization in urban areas. The inspector may at any time require the use of quany spalls if the hog fuel is not preventing sediment from being tracked onto pavement or if the hog fuel is being carried onto pavement. Hog fuel is prohibited in permanent roadbeds because organics in the subgrade soils cause difficulties with compaction. 4. Fencing (see Section D.3.1) shall be installed as necessary to restrict traffic to the constriction entrance. 5. \Vhenever possible, the entrance shall be constructed on a fine, compacted subgrade. This can substantially increase the effectiveness of the pad and reduce the need for maintenance. Maintenance Standards 1. Quarry spalls (or hog fuel) shall be added if the pad is no longer in accordance with the specifications. If the entrance is not preventing sediment from being tracked onto pavement, then alternative measures to keep the streets free of sediment shall be used. This may include street sweeping, an increase in the dimensions of the entrance, or the installation of a wheel wash. If washing is used, it shall be done on an area covered with crushed rock. and wash water shall drain to a sediment trap or pond. 2009 Surface Water Design Manual — Appendix D 119/2009 D-39 Foster Short Plat -Technical Information Report Sept 2013 Appendix D Maintenance Procedures R09400 - The Concept Group Appendices APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL. CONVEYANCE, AND WQ FACILITIES NO. 2 - INFILTRATION FACILITIES Maintenance Component Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed iniet/Outlet Pipes Sediment accumulation Sediment filling 20% or more of the pipe. InieVoutlet pipes clear of sediment. Trash and debris Trash and debris accumulated in iniet/outiet pipes (Includes floatables and non-floatables). No trash or debris In pipes. Damaged Cracks wider than %-Inch at the joint of the Inlet/outlet pipes or any evidence of soil entering at the Joints of the Inlet/outlet pipes. No cracks more than %-inch wide at the joint of the inlet/outlet pipe. Access Manhole Cover/Ild not in place Cover/lid is missing or only partially In place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/Ild difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. Ladder rungs unsafe Missing rungs, misalignment. rust, or cracks. Ladder meets design standards. Allows maintenance person safe access. Large access doors/plate Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so It can opened as designed. Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors close flat and covers access opening completely. Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or plate. Lifting rings sufficient to lift or remove door or plate. Infiltration Pond, Tank, Vault, Trench, or Small Basin Filter Bags Plugged Filter bag more than 1/2 full. Replace filter bag or redesign system. Infiltration Pond. Tank, Vault, Trench, or Small Basin Pre- setting Ponds and Vaults Sediment accumulation 6" or more of sediment has accumulated. Pre -settling occurs as designed Infiltration Pond. Rock Filter Plugged High water level on upstream side of filter remains for extended period of time or little or no water flows through filter during heavy rain storms. Rock filter replaced evaluate need for filter and remove if not necessary. Infiltration Pond Emergency Overflow Spillway Rock missing Only one layer of rock exists above native soil In area five square feet or larger, or any exposure of native soil at the top of out flow path of spillway. Rip -rap on inside slopes need not be replaced. Spillway restored to design standards. Tree growth Tree growth impedes flow or threatens stability of spillway. Trees removed. 1/9/2009 A-4 2009 Surface Water Design Manual — Appendix A APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL. CONVEYANCE, AND WQ FACILITIES NO. 3 - DETENTION TANKS AND VAULTS Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Site Trash and debris Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Trash and debris cleared from site. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Grass/groundcover Grass or groundcover exceeds 18 inches In height. Grass or groundcover mowed to a height no greater than 6 inches. Tank or Vault Storage Area Trash and debris Any trash and debris accumulated in vault or tank (includes floatables and non-floatables). No trash or debris in vault. Sediment accumulation Accumulated sediment depth exceeds 10% of the diameter of the storage area for 'A length of storage vault or any point depth exceeds 15% of diameter. Example: 72 -inch storage tank would require cleaning when sediment reaches depth of 7 Inches for more than 'A length of tank. All sediment removed from storage area. Tank Structure Plugged air vent Any blockage of the vent. Tank or vault freely vents. Tank bent out of shape Any part of tank/pipe Is bent out of shape more than 10% of its design shape. Tank repaired or replaced to design. Gaps between sections, damaged joints or cracks or tears In wall A gap wider than'/ -inch at the joint of any tank sections or any evidence of soil particles entering the tank at a joint or through a wall. No water or soil entering tank through joints or walls. Vault Structure Damage to wall, frame, bottom, and/or top slab Cracks wider than 'A -inch, any evidence of sot entering the structure through cracks or qualified Inspection personnel determines that the vault is not structurally sound. Vault Is sealed and structurally sound. Inlet/Outlet Pipes Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in Inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Damaged Cracks wider than %-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than'/ -inch wide at the joint of the inlet/outlet pipe. 2009 Surface Water Design Manual — Appendix A A-5 1/9/2009 APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL. CONVEYANCE. AND WQ FACILI I IhS NO. 4 - CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance is Performed Structure Trash and debris Trash or debris of more than % cubic foot which is located immediately in front of the structure opening or is blocking capacity of the structure by more than 10%. No Trash or debris blocking or potentially blocking entrance to structure. Trash or debris In the structure that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. No trash or debris in the structure. Deposits of garbage exceeding 1 cubic foot In volume. No condition present which would attract or support the breeding of insects or rodents. Sediment . Sediment exceeds 60% of the depth from the bottom of the structure to the invert of the lowest pipe into or out of the structure or the bottom of the FROP-T section or is within 6 inches of the Invert of the lowest pipe into or out of the structure or the bottom of the FROP-T section. Sump of structure contains no sediment. Damage to frame and/or top slab Corner of frame extends more than 3/. inch past curb face into the street (If applicable). Frame is even with curb. Top slab has holes larger than 2 square inches or cracks wider than '/4 Inch. Top slab is free of holes and cracks. Frame not sitting flush on top slab, i.e., separation of more than % inch of the frame from the top slab. Frame is sitting flush on top slab. Cracks in walls or bottom Cracks wider than % inch and longer than 3 feet, any evidence of soil particles entering structure through cracks, or maintenance person judges that structure is unsound. Structure is sealed and structurally sound. Cracks wider than % inch and longer than 1 foot at the Joint of any InleVoutiet pipe or any evidence of soil particles entering structure through cracks. No cracks more than I/4 Inch wide at the Joint of Inlet/outlet pipe. Settlement/ misalignment Structure has settled more than 1 inch or has rotated more than 2 inches out of alignment. Basin replaced or repaired to design standards. Damaged pipe joints Cracks wider than '/cinch at the joint of the inlet/outlet pipes or any evidence of soil entering the structure at the joint of the Inlet/outlet pipes. No cracks more than %-inch wide at the joint of Inlet/outlet pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Ladder rungs missing or unsafe Ladder Is unsafe due to missing rungs, misalignment, rust, cracks. or sharp edges. Ladder meets design standards and allows maintenance person safe access. FROP-T Section Damage T section is not securely attached to structure wall and outlet pipe structure should support at least 1.000 lbs of up or down pressure. T section securely attached to wall and outlet pipe. Structure is not in upright position (allow up to 10% from plumb). Structure in correct position. Connections to outlet pipe are not watertight or show signs of deteriorated grout. Connections to outlet pipe are water tight; structure repaired or replaced and works as designed. Any holes—other than designed holes—in the structure. Structure has no holes other than designed holes. Cleanout Gate Damaged or missing Cleanout gate is missing. Replace cleanout gate. 2009 Surface Water Design Manual – Appendix A A-7 1/9/2009 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 4 - CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Cleanout gate is not watertight. Gate is watertight and works as designed. Gate cannot be moved up and down by one maintenance person. Gate moves up and down easily and is watertight. Chain/rod leading to gate is missing or damaged. Chain Is in place and works as designed. Orifice Plate Damaged or missing Control device is not working properly due to missing, out of place, or bent orifice plate. Plate is in place and works as designed. Obstructions Any trash. debris, sediment, or vegetation blocking the plate. Plate is free of all obstructions and works as designed. Overflow Pipe Obstructions Any trash or debris blocking (or having the potential of blocking) the overflow pipe. Pipe is free of all obstructions and works as designed. Deformed or damaged lip Lip of overflow pipe Is bent or deformed. Overflow pipe does not allow overflow at an elevation lower than design Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-fioatables). No trash or debris in pipes. Damaged Cracks wider than %2 -inch at the Joint o1 the Inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than %-inch wide at the joint of the inlet/outlet pipe. Metal Grates (If Applicable) Unsafe grate opening Grate with opening wider than 7/8 Inch. Grate opening meets design standards. Trash and debris Trash and debris that Is blocking mare than 20% of grate surface. Grate free of trash and debris. footnote to guidelines for disposal Damaged or missing Grate missing or broken member(s) of the grate. Grate Is in place and meets design standards. Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in place. Any open structure requires urgent maintenance. Cover/lid protects opening to structure. Locking mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to Remove One maintenance person cannot remove cover/lid after applying 80 lbs. of lift. Cover/lid can be removed and reinstalled by one maintenance person. 1/9/2009 A-8 2009 Surface Water Design Manual — Appendix A APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 5 - CATCH BASINS AND MANHOLES Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance Is Performed Structure Sediment Sediment exceeds 60% of the depth from the bottom of the catch basin to the invert of the lowest pipe into or out of the catch basin or is within 6 Inches of the invert of the lowest pipe Into or out of the catch basin. Sump of catch basin contains no sediment. Trash and debris Trash or debris of more than % cubic foot which Is located immediately in front of the catch basin opening or is blocking capacity of the catch basin by more than 10%. No Trash or debris blocking or potentially blocking entrance to catch basin. Trash or debris In the catch basin that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. No trash or debris in the catch basin. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). No dead animals or vegetation present within catch basin. Deposits of garbage exceeding 1 cubic foot in volume. No condition present which would attract or support the breeding of insects or rodents. Damage to frame and/or top slab Corner of frame extends more than % Inch past curb face into the street (if applicable). Frame Is even with curb. Top slab has holes larger than 2 square inches or cracks wider than' Inch. Top slab is free of holes and cracks. Frame not sitting flush on top slab. i.e., separation of more than 3/< Inch of the frame from the top slab. Frame is sitting flush on top slab. Cracks in walls or bottom Cracks wider than ' inch and longer than 3 feet. any evidence of soil particles entering catch basin through cracks, or maintenance person judges that catch basin is unsound. Catch basin is sealed and structurally sound. Cracks wider than ' inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Settlement/ misalignment Catch basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. Basin replaced or repaired to design standards. Damaged pipe joints Cracks wider than' -Inch at the joint of the Inlet/outlet pipes or any evidence of soil entering the catch basin at the joint of the inlet/outlet pipes. No cracks more than'!. -inch wide at the Joint of Inlet/outlet pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil. gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Damaged Cracks wider than '/cinch at the joint of the inlet/outiet pipes or any evidence of soil entering at the Joints of the inlet/outlet pipes. No cracks more than %-inch wide at the joint of the inlet/outlet pipe. 2009 Surface Water Design Manual — Appendix A A-9 1/9/2009 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 5 - CATCH BASINS AND MANHOLES Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Metal Grates (Catch Basins) Unsafe grate opening Grate with opening wider than 718 inch. Grate opening meets design standards. Trash and debris Trash and debris that Is blocking more than 20% of grate surface. Grate free of trash and debris. footnote to guidelines for disposal Damaged or missing Grate missing or broken member(s) of the grate. Any open structure requires urgent maintenance. Grate is In place and meets design standards. Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in place. Any open structure requires urgent maintenance. Cover/lid protects opening to structure. Locking mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lld difficult to Remove One maintenance person cannot remove cover/lid after applying 80 lbs. of lift. Cover/lid can be removed and reinstalled by one maintenance person. 1/9/2009 2009 Surface Water Design Manual — Appendix A A-10 APPENDLX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL. CONVEYANCE, AND WQ FACIL1I IhS' NO. 6 - CONVEYANCE PIPES AND DITCHES Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Pipes Sediment & debris accumulation Accumulated sediment or debris that exceeds 20% of the diameter of the pipe. Water flows freely through pipes. Vegetation/roots Vegetation/roots that reduce free movement of water through pipes. Water flows freely through pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Damage to protective coating or corrosion Protective coating is damaged: rust or corrosion is weakening the structural integrity of any part of pipe. Pipe repaired or replaced. Damaged Any dent that decreases the cross section area of pipe by more than 20% or Is determined to have weakened structural integrity of the pipe. Pipe repaired or replaced. Ditches Trash and debris Trash and debris exceeds 1 cubic foot per 1,000 square feet of ditch and slopes. Trash and debris cleared from ditches. Sediment accumulation Accumulated sediment that exceeds 20% of the design depth. Ditch cleaned/flushed of all sediment and debris so that it matches design. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Vegetation Vegetation that reduces free movement of water through ditches. Water flows freely through ditches. Erosion damage to slopes Any erosion observed on a ditch slope. Slopes are not eroding. Rock lining out of place or missing (If Applicable) One layer or less of rock exists above native soil area 5 square feet or more. any exposed native soil. Replace rocks to design standards. 2009 Surface Water Design Manual — Appendix A A-11 1/9/2009 APPENDIX A MANTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE. AND WQ FACILITIES • NO. 12 -ACCESS ROADS Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance Is Performed Site Trash and debris Trash and debris exceeds 1 cubic foot per 1,000 square feet (Le., trash and debris would fill up one standards size garbage can). Roadway drivable by maintenance vehicles. Debris which could damage vehicle tires or prohibit use of road. Roadway drivable by maintenance vehicles. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Blocked roadway Any obstruction which reduces clearance above road surface to less than 14 feet. Roadway overhead clear to 14 feet high. Any obstruction restricting the access to a 10- to 12 foot width for a distance of more than 12 feet or any point restricting access to less than a 10 foot width. At least 12 -foot of width on access road. Road Surface Erosion. settlement, potholes, soft spots, ruts Any surface defect which hinders or prevents maintenance access. Road drivable by maintenance vehicles. Vegetation on road surface Trees or other vegetation prevent access to facility by maintenance vehicles. Maintenance vehicles can access facility. Shoulders and Ditches Erosion Erosion within 1 foot of the roadway more than 8 Inches wide and 6 inches deep. Shoulder free of erosion and matching the surrounding road. Weeds and brush Weeds and brush exceed 18 inches In height or hinder maintenance access. Weeds and brush cut to 2 inches in height or cleared In such a way as to allow maintenance access. Modular Grid Pavement Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented If appropriate. No contaminants present other than a surface oil film. Damaged or missing Access surface compacted because of broken on missing modular block. Access road surface restored so road infiltrates. 2009 Surface Water Design Manual — Appendix A A-17 1/9/2009 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 21- STORMFILTER (CARTRIDGE TYPE) Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance is Performed Site Trash and debris Any trash or debris which Impairs the function of the facility. Trash and debris removed from facility. Contaminants and pollution Any evidence of contaminants or pollution such as oils, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Life cycle System has not been inspected for three years. Facility is re -inspected and any needed maintenance performed. Vault Treatment Area Sediment on vault floor Greater than 2 inches of sediment. Vault is free of sediment. Sediment on top of cartridges Greater than h inch of sediment. Vault is free of sediment. Multiple scum Ones above top of cartridges Thick or multiple scum lines above top of cartridges. Probably due to plugged canisters or underdrain manifold. Cause of plugging corrected. canisters replaced if necessary. Vault Structure Damage to wall, Frame, Bottom, and/or Top Slab Cracks wider than'/cinch and any evidence of sot particles entering the structure through the cracks, or qualified Inspection personnel determines the vault is not structurally sound. Vault replaced or repaired to design specifications. Baffles damaged Baffles corroding, cracking warping, and/or showing signs of failure as determined by maintenance/inspection person. Repair or replace baffles to specification. Filter Media Standing water in vault 9 Inches or greater of static water in the vault for more than 24 hours following a rain event and/or overflow occurs frequently. Probably due to plugged filter media, underdrain or outlet pipe. No standing water in vault 24 hours after a rain event. Short circuiting Flows do not properly enter filter cartridges. Flows go through filter media. Underdralns and Clean -Outs Sedlment/debris Underdratns or clean -outs partially plugged or filled with sediment and/or debris. Underdrains and clean -outs free of sediment and debris. Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris In pipes. Damaged Cracks wider than 1/2 -inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inletloutlet pipes. No cracks more than %-inch wide at the joint of the inlet/outlet pipe. Access Manhole Cover/lid not in place Cover/lid is missing or only partially in place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. Ladder rungs unsafe Missing rungs, misalignment, rust, or cracks. Ladder meets design standards. Allows maintenance person sate access. Large access doors/plate Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so it can opened as designed. 1/9/2009 A-30 2009 Stuface Water Desip Manual — Appendix A APPENDLX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 21- STORMFILTER (CARTRIDGE TYPE) Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors dose flat and cover access opening completely. Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or plate. Lifting rings sufficient to lift or remove door or plate. 2009 Surface Water Design Manual — Appendix A 1/9/2009 A-31 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES NO. 22 - BAFFLE OIL WATER SEPARATOR Maintenance Component Defect Condition When Maintenance is Needed Results Expected When Maintenance Is Performed Site Trash and debris Any trash or debris which impairs the function of the facility. Trash and debris removed from facility. Contaminants and pollution Floating oil In excess of 1 Inch in first chamber, any oil in other chambers or other contaminants of any type in any chamber. No contaminants present other than a surface oil film. Vault Treatment Area Sediment accumulation Sediment accumulates exceeds 6 Inches in the vault. No sediment in the vault. Discharge water not clear Inspection of discharge water shows obvious signs of poor water quality- effluent discharge from vault shows thick visible sheen. Effluent discharge is clear. Trash or debris accumulation Any trash and debris accumulation In vault (floatables and non-floatables). Vault Is clear of trash and debris. Oil accumulation 011 accumulations that exceed 1 Inch, at the surface of the water in the oil/water separator chamber. No visible oil depth on water. Vault Structure Damage to Wall, Frame, Bottom, and/or Top Slab Cracks wider than 1/2 -inch or evidence of soil particles entering the structure through the cracks, or maintenance/inspection personnel determines that the vault is not structurally sound. Vault replaced or repaired to design specifications. Baffles damaged Baffles corroding, cracking, warping and/or showing signs of failure as determined by maintenance inspection personnel. Repair or replace baffles to specifications. Gravity Drain Inoperable valve Valve will not open and close. Valve opens and, closes normally. Valve won't seal Valve does not seal completely. Valve completely seals closed. Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inleVoutiet pipes (includes floatables and non-floatables). No trash or debris in pipes. Damaged Cracks wider than %-inch at the joint of the Inlet/outlet pipes or any evidence of soil entering at the joints of the iniet/outlet pipes. No cracks more than% -inch wide at the joint of the inlet/outlet pipe. Access Manhole Coveriild not in place Cover/lid is missing or only partially in place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. Ladder rungs unsafe Missing rungs, misalignment. rust, or cracks. Ladder meets design standards. Allows maintenance person safe access. Large access doors/plate Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so it can opened as designed. Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors close flat and cover access opening completely. Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or cover/lid. Lifting rings sufficient to lift or remove cover/lid. 1/9/2009 A-32 2009 Surface Water Design Manual — Appendix A February 25, 2011 Mr. Han Phan, PE 5130 S 166`h Lane SeaTac, WA 98188 City of Tukwila Jim Haggerton, May Department of Community Development Jack Pace, Direct Re: Technical Comments Letter #2, Foster Short Plat 4419 S 144th Street (parcel numbers 0040000375 and 0040000380) L10-004 Dear Mr. Phan, The City of Tukwila has completed a review of the revisions, submitted on January 21, 2011, to the above short plat application. The following items must be addressed prior to preliminary approval: 1. Please revise the storm drainage designon civil plans to provide a tight lined connection from each lot in the Foster Short Plat to the City storm drainage system. Each of the houses that connect to the tight lined connection shall have a perforated connection between the house and the connection. The pipe will be laid flat and also serve as an overflow. The only lot which will not have a tight lined connection to the City system through this new design will be Lot 6 at the southwest corner of the project site. 2. On a copy of the storm drainage design plan sheet, please shade the area of the site that will be tied in to the City storm drainage system. This will help illustrate for adjacent property owners how the project will result in a net reduction of the area of the site on which storm water infiltration overflow will occur. Provide a letter to the City of Tukwila Public Works Department which includes a description of how the new storm drainage design reduces adverse drainage impacts to adjacent property owners, and provide an estimate of the % net reduction of drainage flow conditions that will result from the - project as compared to the current condition. Please provide an acknowledgement of how the new design meets and/or exceeds the 1998 King County Storm Water Design Manual. 3. Please clarify to reflect whether an infiltration trench will be located on the north side of Lot 6. If there will be an infiltration trench in this area, please revise the civil plans to show its location. 4. Since the existing house at 4419 S. 144th Street is on septic, it shall be connected through this project to the Valley View Sewer District sewer system. Please revise your plans to show the location of the septic tank and a connection to new sanitary sewer. If you are having difficulty locating the septic tank, please contact King County Health at (206) JR Page 1 of 2 H:\Short Plats\Foster Short Plat\L.10-004_Technical Comments2_Foster Short Plat.doc 02/25/2011 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 296-4932. A septic abandonment permit from Public Workswill be required at the time of infrastructure construction. Next Step Your next step is to revise your civil plans to reflect changes the comments above and resubmit four sets of plans to the Department of Community Development. If you have any questions please call (206) 431-3659 or send an email to jreavis@ci.tukwila.wa.us. Sincerely, Jaimie Reavis Assistant Planner JR Page 2 of 2 02/25/2011 H:\Short P1ats.Foster Short Plat\L10-004_Technical Comments2_Foster Short Plat.doc AFTER RECORDING MAIL TO: TL Investment Group, LLC 4055 S. 148th Street Tukwila, WA 98168 RECEIVED SIN 21 2011 COMMUNITY DEVELOPMENT DECLARATION OF SIDEWALK AND UTILITIES EASEMENT (Number 1) Reference City of Tukwila Short Plat No. L10-004 Grantor(s): TL Investment Group, LLC Grantee(s): TL Investment Group, LLC Abbreviated Legal Description: Tracts 6 and 7, Block 3, Adams Home Tracts Assessor's Property Tax Parcel or Account No.: 0040000375 & 0040000380 Grantor's legal description: Tracts 6 and 7, Block 3, Adams Home Tract, According to the plat thereof recorded in volume 11 of plats, page(s) 31, Records of King County, Washington. Easement's legal description: The north 10.00 feet of Tract 6 and 7, Block 3, Adams Home Tracts, according to the plat thereof recorded in Volume 11 of Plats, Page 31, records of King County, Washington. IN CONSIDERATION OF THE FUTURE OWNERS of the lots within the Foster Short Plat, L10-004 relating to real property, the undersigned Grantor declares a permanent easement for a sidewalk and utilities easement for benefit of Lot 1 to Lot 9 of said short plat. 1. This easement is for the sole purpose of the construction, use and maintenance of a sidewalk and utilities, together with the right of access for use and maintenance. 2. Maintenance of the easement shall be shared equally by the benefited parties. 3. Cost of maintenance or repair of a utility within said easement shall be borne by the party(s) served by that utility. 4. This easement agreement shall run with the land and shall be binding on all parties having or acquiring any right, title or interest in the land described herein. THIS INSTRUMENT made this day of Investment Group LLC, herein called "Grantors". Dated this day of , 20 20 , by TL r) STATE OF WASHINGTON ) ) SS COUNTY OF ) On this day personally appeared before me to me known as the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed, for the uses and purposes therein stated. Given under my hand and official seal this day of NOTARY PUBLIC in and for the State of Washington, residing at Washington, residing at STATE OF WASHINGTON ) ) SS COUNTY OF ) On this day personally appeared before me to me known as the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed, for the uses and purposes therein stated. Given under my hand and official seal this day of NOTARY PUBLIC in and for the State of Washington, residing at Washington, residing at 3 RECEIVED JAN 21 2011 COMMUNITY ®EVELOPMEPlT AFTER RECORDING MAIL TO: TL Investment Group, LLC 4055 S. 148th Street Tukwila, WA 98168 DECLARATION OF SIDEWALK AND UTILITIES EASEMENT (Number 2) Reference City of Tukwila Short Plat No. L10-004 Grantor(s): TL Investment Group, LLC Grantee(s): TL Investment Group, LLC Abbreviated Legal Description: Tracts 6 and 7, Block 3, Adams Home Tracts Assessor's Property Tax Parcel or Account No.: 0040000375 & 0040000380 Grantor's legal description: Tracts 6 and 7, Block 3, Adams Home Tract, According to the plat thereof recorded in volume 11 of plats, page(s) 31, Records of King County, Washington. Easement's legal description: That portion of Tract 6 and 7, Block 3, Adams Home Tracts, according to the plat thereof recorded in Volume 11 of Plats, Page 31, records of King County, Washington, described as follows: Beginning at a concrete monument marking the intersection of 42nd avenue south and south 144th street; Thence south 87°49'10" east, along the centerline of said south 144th street, 659.69 feet; Thence south 01°08'52" west 20.00 feet to the south margin of said south 144th street and the northwest corner of said tract 6; Thence south 01°08'52" west, along the west line of said tract 6, 10.00 feet to the south line of the north 10.00 feet of tract 6; Thence south 87°49'10" east 93.49 feet to the true point of beginning; Thence south 01°08'52" west 163.88 feet to a point of curvature; Thence on a curve to the right with a radius of 10.00 feet, an arc of 15.88 feet; Thence south 87°51'43" east 47.34 feet; Thence south 01 °08'52" west 20.00 feet; Thence north 87°51'43" west 44.32 feet; Thence south 01°08'52" west 5.00 feet; Thence south 87°51'43" east 44.14 feet to the point of curvature; Thence on a curve to the left with a radius of 20.00 feet, an arc of 31.76 feet; Thence north 01°08'52" east 158.70 feet to a point on the south line of the north 10.00 feet of tract 6; Thence north 87°49'10" west 10.00 feet to the true point of beginning. IN CONSIDERATION OF THE FUTURE OWNERS of the Tots within the Foster Short Plat, L10-004 relating to real property, the undersigned Grantor declares a permanent easement for a sidewalk and utilities easement for benefit of Lot 1 to Lot 9 of said short plat. 1. This easement is for the sole purpose of the construction, use and maintenance of a sidewalk and utilities, together with the right of access for use and maintenance. 2. Maintenance of the easement shall be shared equally by the benefited parties. 3. Cost of maintenance or repair of a utility within said easement shall be borne by the party(s) served by that utility. 4. This easement agreement shall run with the land and shall be binding on all parties having or acquiring any right, title or interest in the land described herein. THIS INSTRUMENT made this day of 20 , by TL Investment Group LLC, herein called "Grantors". Dated this day of , 20 STATE OF WASHINGTON ) ) SS COUNTY OF ) On this day personally appeared before me to me known as the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed, for the uses and purposes therein stated. Given under my hand and official seal this day of NOTARY PUBLIC in and for the State of Washington, residing at Washington, residing at STATE OF WASHINGTON ) ) SS COUNTY OF ) On this day personally appeared before me to me known as the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed, for the uses and purposes therein stated. Given under my hand and official seal this day of NOTARY PUBLIC in and for the State of Washington, residing at Washington, residing at 3 MEMORANDUM www.ci.tukwila.wa.us Development Guidelines and Design and Construction Standards TO: PLANNING DEPT. — Jaimie Reavis, Assistant Planner C>lichyt FROM: PUBLIC WORKS DEPT. — David McPherson, Development Engineer DATE: May 27, 2011 SUBJECT: Foster - 9 Lot Short Plat 4419 S. 144th Street TL nos. — 004000-0375 / 004000-0380 Short Plat Comments Short Plat — L10-004 Prior to Final Short Plat, the following comments need to be addressed for Public Works. 0,, • o� 1. Owner/Applicant to complete a Traffic Concurrency Certificate Application and pay Geo- $1,200 as part of this Short Plat — L10-004. (See enclosed.) 2. Provide a draft copy of Private Tract 'A' Access & Utilities Easement and Maintenance Agreement. (1) Document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. (2) The Private Tract 'A' Access & Utilities Easement and Maintenance Agreement should include language stating who will maintain the paved area, storm drainage, and utilities, and by what portion. (See sample enclosed.) 3. Owner shall sign with Notary, a 15' Private Drainage Easement (within the Western portions of proposed Lots 8 & 9; for the benefit of proposed Lots 7, 8, & 9.) This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. (See sample enclosed.) 4. Owner shall sign with Notary, a 25' Private Drainage Easement (within the Southwest corner of proposed Lot 7; for the benefit of proposed Lot 6 & a portion of Tract `A') This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. 5. Owner shall sign with Notary, a Private Sidewalk & Utilities Easement (adjacent to the Tract 'A' outside perimeter); from proposed Lots 1 thru 9 for the benefit of proposed Lots 1 thru 9.) This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. Easements labeled #2 & #3 should be combined into one Easement. Page 1 of 2 6. Owner shall sign with Notary, a 10' Private Utilities Easement (within the North 10 feet of the proposed Lot 1, Tract 'A', and Lot 9; for the benefit of proposed Lots 1 thru 9 . This document shall be recorded prior to recording of the Final Short Plat Map, and the recording number be shown on the short plat map. 7. Owner shall sign with Notary, a Storm Water Easement and Maintenance Agreement. Public Works will prepare document. Allow at least ten (10) days for recording. (See sample enclosed.) Short Plat Survey Site Plan 1. New legal descriptions for proposed Lots 1 thru 9 should include "SUBJECT TO ----", "SUBJECT TO AND TOGETHER WITH ", or "TOGETHER WITH "; reference (a) Tract 'A' Access & Utilities Easement (b) ANY - Sidewalk & Utilities Easement (c) ANY — Public (or) Private Drainage Easement. (as applicable) Miscellaneous Comments 1. Turnover documents will be required for the new Public sidewalk, street light, and a catch basin within S. 144th Street Right -of -Way or Public Easement. Provide cost(s) for each item to be turned over. City will prepare documents for Owner's signature. 2. Portion of new sidewalk and Public Street Light is on private property and will require a Public Sidewalk & Street Light Easement. City will prepare Public Sidewalk & Street Light Easement for Owner's signature. 3. Pavement cut within S. 144th Street will require payment of a Pavement Mitigation Fee. (See PW Bulletin A3 — Pavement Mitigation and Transportation Impact Fees — Enclosed.) 4. Per City Ordinance all water meters and water meter service lines may need to be 1 -inch not 3/4 -inch as show on Civil Plan sheet UT2 (13 of 15). Future houses require fire sprinkler protection. Page 2 of 2 City of Tukwila Department of Community Development FILE NUMBER L10-004 (Short Plat) PL10-003 (Land Use Project) U Land Use Routing form for Revisions TO: to Building Fire Dept. Police Dept EoParks/Rec. ublic Works: Joanna Spencer Project: Foster Short Plat Address: 4419 S 144th Street (parcels 0040000375 & 0040000380) Date transmitted: 4/06/2011 Response requested by: 4/20/2011 Planner: Jaimie Reavis Date response received: COMMENTS Colo r es j o�4"',e,cAi Vl i CGJ coY rfry �-t'f Le -ft -v5 ice/ Q S i-- rut p(e'✓r o-.)--,:. eiwy, a fr.LCke 00d P 'iorir 6' , p• 5 *fall i frdir / 'A h ,, , , f p , , : e 1 r n (s.edr._ w'itwc ,—.4. dearrnaya •j enktiti / .5727/t 10 DRC review requested Plan check date: 510/10(1 26, Plan submittal requested Plan approved Comments prepared by: ‘to, September 10, 2010 Mr. Han Phan, PE 5130 S 1.66' Lane SeaTac, WA 98188 City of .Tukwila Jim Haggerton, Mayo Department of Community -Development. Jack Pace, Directo Re: • Technical Comments Letter, Foster Short Plat • 4419 S 144th Street (parcel numbers 0040000375 and 0040000380) L10-004 Dear Mr. Phan, The City of Tukwila has completed a review of the above short plat application, which was submitted on January 27, 2010 and deemed complete on February 3, 2010. The following list of City staff is the development review team that reviewed the materials submitted as part of the above short plat application: Jaimie Reavis Joanna Spencer Don Tomaso Dave Larson Planning Division of DCD Public Works Department Fire Department Building Division of DCD (206) 431-3659 (206) 431-2440 (206) 575-4407 (206) 431-3678 Comments from each department are listed separately below. For technical questions regarding specific comments listed below by department, please contact the appropriate individual from the above list. Please address any questions related to this letter, the short plat process, and resubmittal directly to the Project Planner, Jaimie Reavis. Planning Division of DCD 1. Demonstrate and show on plans where parking will be provided for Lot #1. 2. Provide legal description of "Tract A" on short plat survey map. If the access and utilities will be within a tract, a detailed maintenance agreement will need to be developed and recorded, which. outlines how the maintenance will be shared among property owners of this short plat. You could also change the access road and utilities within the road to be easements across lots in the development rather than a tract. 3. Since storm drainage design for Lot 6 will be revised to move one of the infiltration trenches to the front of the lot, some of the trees on the south side of the lot marked to be removed may be able to be retained. Please revise plan sheet LD 1 (9 of 14) to show additional trees that can be retained on Lot 6. 4. Add a detail to the TESC Plan (Sheet EC 1, 2 of 14) showing tree protection measures to be installed (see attached sample). The contractor will need to install these prior to the start of work once the Public Works site construction permit has been issued. JR Page 1 of 2 H:\Short Plats\Foster Short Plat \L10-004 Technical Comments Foster Short Plat.doc 09/10/2010 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 . Add the name of the plat (Foster Short Plat), City of Tukwila file number (L10-004), and a north arrow to the survey map. The survey will need to be in the City of Tukwila format/template. The survey template can be downloaded from the following webpage: http://www.ci.tukwila.wa.us/dcd/dcdplan.html. The template is located at the bottom of the webpage, under the section titled "Planning Documents and Fees". Public Works Department 1. Per the last meeting we had, which included staff from Planning and Public Works, drainage for Lot 6 shall be modified to have one infiltration trench in the back (south side) and one in the front (north side). Revise civil plans to reflect this change. 2. A storm drainage/utility easement along lots 7, 8, and 9 is required since these lots shall have one perforated pipe storm drainage system connecting to the catch basin in S 144th Street. Submit a draft copy for Public Works review prior to recording. 3. Provide a draft copy of Utility Easement(s) and Maintenance Agreement(s), including a maintenance agreement for Tract A. (1) These documents (including the storm drainage/utility easement described above) shall be recorded prior to recording of the Final Short Plat Map, and the recording numbers shall be shown on the short plat map. (2) The utility easements, and maintenance agreement for Tract A should include language stating who will maintain.the facilities, and by what portion. Maintenance of the private street lighting along Tract A will need to be included. 4. Owner to sign with Notary a Joint Side Sewer & Hold Harmless Agreement, if two (2) houses are to share one (1) side sewer. Public Works will prepare document for signature, if applicable. Please contact the engineer for this project, Joanna Spencer, for more information. 5. Short plats of more than five lots require a full -width street improvement, including sidewalks on both sides of the street. Sidewalks are shown on both sides of the north -south leg of the street that will serve the development, but not on the east -west portion of the street. The plans will need to be revised to show sidewalks on the east -west portion of the street serving lots 3, 4, 5, and 6. 6. Check with the postmaster to identify the location and type of mailboxes that will be used for the project, to be sure the current sidewalk design does not need to be modified. Fire Department No comments at this time. Building Division of DCD Demolition permits are required for structures to be removed. Next Step Your next step is to revise your plat survey and civil plans to resubmit four sets of plans to the Department of Community If you have any questions please call (206) 431-3659 or send Sincerely, 1'#1 imie Reavis Assistant Planner Enc.: Sample Tree Protection Measures reflect changes the comments above and Development. an email to jreavis@ci.tukwila.wa.us. JR Page 2 of 2 09/10/2010 H:\Short Plats\Foster Short Plat\L10-004 Technical Comments Foster Short Plat.doc City of Tukwila Department of Community Development TUKVVILA PUBLIC WORKS RECEiVED FEB 0 3 'LU1U File Number L10-004 E10-001 CSEM) LAND USE PERMIT ROUTING FORM TO: I Building * Planning ®Public Works * Fire Dept. 10l Police Dept. Parks/Rec Project: Foster Short Plat Address: 4419 S 144th Street Date transmitted: 2/03/2010 Response requested by: 2/19/2010 Staff coordinator: Jaimie Reavis Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) Pre -application meeting under file #PRE09-016. D,:10,r w 1 P ,,2 au 7144,6-(4,-(\e,cluko IA -0-0-u 0 I )',OCVC14,1, 9A4A-C.0-1, iAA- (,CSIc[e) 0 6 oi . •4 , iLt,k �� - PA 7, g 0,4 V 1St <<-, Plan check • atg:'"' tk45� Com entsii)11)2: Upda date: prepared by: ,..19� Oir2-I 1t2 igt sLx2V, gatiz (ssi,a) City of Tukwila Department of Community Development FILE NUMBER L10-004 (Short Plat) PL10-003 (Land Use Project) Land Use Routing form for Revisions TO: £43 Building ire Dept. sC) Police Dept 2oParks/Rec. EC) Public Works: Joanna Spencer Project: Foster Short Plat Address: 4419 S 144th Street (parcels 0040000375 & 0040000380) Date transmitted: 2/01/2011 Response requested by: 2/15/2011 Planner: Jaimie Reavis Date response received: COMMENTS 1 t n (ct-1 tmlt44-4 611 ,- c-'€1 rl71- I //0 / Zr)/L) t.s aM c °d(F- your- re ps!LL r) &AC --e JAGS o.k----k. S; I S v‘ -2 k. j c, 9,,,k--v,.a .*. J C tr** c-tc T;, -.g. ' : Z c• - :1-- --\-- c -c- (1/414A,...,..,6 --E-ac c.M.t. ,ir.sw-- at* rv., ..9,-,.-e. . t ( • ---.A.- -- _ ,''"^ X15 v\ sc) DRC review requested Plan submittal requested Plan check date: 21 \\ Comments prepared by: City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director .$ Rick Bidlack and Sheila Coppola 4261 S. 144th Street Tukwila, WA 98168 Dear. Mr. Bidlack and Ms. Coppola, Thank you for submitting comments for the Foster Short Plat, a proposed 9 -lot development located on two existing parcels at 4419 S 144th Street in Tukwila. Your comments were submitted to the City on February 28, 2010, and were related to trees, drainage, the fence between your property and the project site, and privacy. Your comments were shared with the project applicant, after which the applicant and City staff met with you to discuss the different concerns and how they may be able to be addressed as part of the Foster Short Plat project. Below the comments from your letter are shown in italics, followed by the City's response. Trees There is a very large maple tree on the boundary between our property and proposed Lot 9, depicted in both the Drainage Plan and the Tree Retention Plan. The trunk of this tree is roughly 3 ft. in diameter (measured four feet above grade) and is 90% on our property. Its branches, and therefore roots, extend at least 30 ft. out from the trunk in all directions. In addition to the maple, there is a line of medium size evergreens (cedars and junipers) along our eastern border extending from the street south approximately 100 ft. The drip -line on these evergreens is approximately 10 ft. out from the trunks. The proposal to dig infiltration trenches at the western ends of Lots 8 and 9 could potentially kill these trees, especially the maple. We would request that any plan to dig within the drip line of these trees involve an assessment by a certified arborist to ascertain the location of the root system and to insure that these trees remain healthy. (We can suggest Favero Greenforest as a qualified tree -risk assessor who has worked with the City of Tukwila in the past). The applicant, in his response to comments dated April 9, 2010, noted that installation of the new storm drain line, rather than the infiltration trenches originally proposed, will minimize excavation and impacts to the tree root system. Additionally, a pre -construction meeting will be held on site prior to the start of construction. As part of this meeting, tree protection measures will be inspected. Drainage: The topographical data in the plans show that the western edge of Lot 6 is the lowest point in elevation of the proposed development. What is not shown on any of the plans is that this region is a local low spot, an occasional pond that straddles the property line. It is clear that this area will become the collection basin for much of the runoff from the development (note the proposed "drainage easement" located just north of this region). The development plan as currently proposed will essentially create a large mudhole and 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax 206-431-3665 breeding ground for mosquitos in the south-eastern corner of our property, and partially submerge the existing fence. We are open to any sensible proposal and stand ready to cooperate. We would request that the plans for the development be amended to include a practical, long-term solution for this area. The current plan, in failing to address this, will only create a problem for us, for our neighbors to the south, and for the future owners of Lot 6. To address your comments, as well as comments received from neighboring property owner to the southwest of the project site, the City requested that the applicant redesign the proposed storm drainage system. The runoff from the roof of the existing house and existing paved surfaces of Lot 1 will infiltrate on site as it has historically. New impervious surfaces from new lots 2, 3, 4, 5, 7, 8, and 9 will be tight lined to the City's storm drainage system. Due to the elevation of Lot 6 and a portion of the new access road adjacent to Lot 7 which prevents gravity flow to the storm drainage system, these areas will continue to infiltrate to native soils. Infiltration trenches originally proposed at the south end of Lot 6 have also been divided, so that there is now only one proposed on the south side of the lot and one proposed on the north side of the lot. This will allow two trees originally proposed for removal to be retained. Please see the attached letter and graphic from the applicant, dated March 10, 2011, which describes how the new storm drainage design will provide a net reduction from the existing condition of the amount of storm water which infiltrates to native soils. It may make more sense to backfill and regrade this area, which would involve dismantling and reconstructing the fence. Following submittal of your comment letter in February 2010, City staff met with you and the applicant. The idea of adding fill to the low spot on your property was discussed and the applicant was agreeable to this idea as long as the property owner of the Foster Short Plat project site also agreed with this approach. On January 18, 2011 an email was sent to the City from Mr. Bidlack. The email included three attachments showing how much water had accumulated on your property after a recent storm event. Given this new information, Mr. Bidlack suggested the southeastern corner of 4261 S 144th Street should remain as a retention area and not be filled in as originally discussed with the project applicant. The City of Tukwila agrees that the low spot on your property should not be filled as part of the Foster Short Plat project. Per the redesign of the storm drainage system for the Foster Short Plat, the applicant has demonstrated that this project should result in a net reduction in the amount of stormwater flowing from the project site to adjacent properties. While some kind of wetlands cultivation and retention scheme might be envisioned for this area, it is difficult to _imagine one. that would be practical to maintain. _ The City of Tukwila regulates wetlands, watercourses, and steep slopes as sensitive areas per state requirements. Staff conducted a site visit of your property, on which standing water was observed. The wet area observed on the southeastern comer of 4261 S. 144th Street is not mapped as a wetland or potential wetland according to the City of Tukwila's sensitive area maps. Staff observed during the site visit that this area does not have the hydrologic or vegetative characteristics necessary to be classified as a wetland at this time. Therefore, the City cannot require a protective buffer around this area. The survey plan for the proposed development indicates that a portion of the chain link fence along our eastern boundary actually lies a few inches east of the. surveyed property line. We are concerned that this Page 2 of 3 fence remain nonetheless undisturbed. We can document that the fence has been in place for over 30 years. Today the fence satisfies the safety requirements of having a swimming pool on the property. (The pool was built about 25 years ago. Both the fence and the pool are still in good condition today.) We would like some assurance that we will still have a chain link fence standing 6 ft. above grade upon completion of the proposed development project. That is a legal requirement for us because of the pool, and the current fence satisfies that requirement. The applicant's response to comments, submitted on April 9, 2010, states that the development will not disturb or remove any fence along the west side of the property line. This will be reminded to the contractor at the pre -construction meeting for the site construction/Public Works permit. Privacy: Until December 2009 the two parcels comprising the proposed development were fairly heavily wooded, affording us a good deal of privacy, peace and contentment. All of the trees shielding our patio/pool area (indeed, most of the trees on the lot) have now been removed. Obviously there is no obligation on the part of TL Investment Group to provide us with a privacy screen, so we will absorb the $1,500 cost to plant a tall hedge. We are not excited about incurring any additional costs as a result of this project unless there is a compelling reason to do so. The following condition of approval has been added to address removal of any additional trees from the project site: Trees to be protected and removed are shown, along with tree protection measures, on Civil Plans Sheet 2 of 15. Prior to the start of work under the Public Works permit, a pre -construction meeting shall be held on site during which trees to be removed will be flagged and tree protection measures inspected. A tree clearing permit and tree replacement plan will be required for removal of any trees within steep slope areas. As a party of record, you will receive a copy of the preliminary approval letter for the Foster Short Plat. Please let me know if you have any additional questions. Sincerely, edIAZI Jaimie Reavis Assistant Planner Ryan Larson Senior Surface Water Engineer Page 3 of 3 • RECEIVED • February 27, 2010 City of Tukwila Department of Community Development 6300 Southcenter Blvd., Ste 100 Tukwila, WA 98188 MAR 0 2 2010 CO ,weir DIEIMMEMIT Re: Foster Short Plat and SEPA/Environmental Review, File #'s L10-004, E10-001 Attn: Jaimie Reavis: I own property at,4244 S 146th St. (since 1988). I am concerned about possible flooding on my property if storm water is not managed effectively by the developer proposing to construct eight new homes at 4419 S 144t St. During periods of heavy winter rain, water often ponds in a low area near the south west corner of the proposed development property and the neighboring property directly to the west of it. My property is to the south of the pond area and is lower in elevation. The water that naturally flows from these neighboring properties onto mine does so through a permeable soil layer on top of impermeable hard pan (typical soil layering in this area). It is effectively controlled on my property by an engineered drainage system. At present, the rate that rain water eventually migrates onto my property from the proposed development property is controlled through natural soil filtration. The developer proposes to collect rain water runoff in dry wells sited along the south and west property lines. During heavy rainfall this concentration of collected water near the property lines will potentially filter or leach through the soil and off the developer's property at a much higher rate of flow than it does now. This could lead to water flooding onto my property. I ask that the City of Tukwila require this developer to collect rain water runoff from roofs and paved areas in a tight line system and direct it to a storm drain. Better yet, protect the pond area with a 200 foot buffer zone (300 feet would be ideal). Our communities wild life deserves that a natural source of water be protected. SinG�l � AIL William Bayh William Bayh 4244 S 146th St. Tukwila, WA 98168 • • February 28, 2010 City of Tukwila Department of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 Re: Foster Short Plat and SEPA/Environmental Review, Files L10-004, E10-001 Attn: Jaimie Reavis We own the property bordering the entire western side of the proposed development site (parcel # 0040000370). Our concerns with the proposed development fall into four categories: trees, drainage, the fence between our properties, and privacy. Trees: There is a very large maple tree on the boundary between our property and proposed Lot 9, depicted in both the Drainage Plan and the Tree Retention Plan. The trunk of this tree is roughly 3 ft in diameter (measured four feet above grade) and is 90% on our property. Its branches, and therefore roots, extend at least 30 ft out from the trunk in all directions. In addition to the maple, there is a line of medium size evergreens (cedars and junipers) along our eastern border extending from the street south approximately 100 ft. The drip -line on these evergreens is approximately 10 ft out from the trunks. The proposal to dig infiltration trenches at the western ends of Lots 8 and 9 could potentially kill these trees, especially the maple. We would request that any plan to dig within the drip line of these trees involve an assessment by a certified arborist to ascertain the location of the root system and to insure that these trees remain healthy. (We can suggest Favero Greenforest as d qualified tree -risk assessor who has worked with the City of Tukwila in this capacity in the past.) Drainage: The topographical data in the plans show that the western edge of Lot 6 is the lowest point in elevation of the proposed development. What is not shown on any of the plans is that this region is a local low spot, an occasional pond that straddles the property line. It is clear that this area will become the collection basin for much of the runoff from the development (note the proposed "drainage easement" located just north of this region). The development plan as currently proposed will essentially create a large mudhole and breeding ground for mosquitoes in the south-eastern corner of our property, and partially submerge the existing fence. While some kind of wetlands cultivation and retention scheme might be envisioned for this area, it is difficult to imagine one that would be practical to maintain. It may make more sense to backfill and regrade this area, which would involve dismantling and reconstructing the fence. We are open to any sensible proposal and stand ready to cooperate. We would request that the plans for the development be amended to include a practical, long-term solution for this area. The current plan, in failing to address this, will only create a problem for us, for our neighbors to the south, and for the future owners of Lot 6. Fence: The survey plan for the proposed development indicates that a portion of the chain link fence along our eastern boundary actually lies a few inches east of the surveyed property line. We are concerned that this fence remain nonetheless undisturbed. We can document that the fence has been in place for over 30 • • years. Today the fence satisfies the safety requirements of having a swimming pool on the property. (The pool was built about 25 years ago. Both the fence and the pool are still in good condition today.) We would like some assurance that we will still have a chain link fence standing 6 ft above grade upon completion of the proposed development project. That is a legal requirement for us because of the pool, and the current fence satisfies that requirement. We can imagine certain scenarios in the course of the proposed development that would create an expensive problem for us. For example, we have discussed the low spot between our property and Lot 6. The fence dips down and runs through the middle of this area. If someone were to decide to regrade Lot 6 and build a six foot retaining wall along the western edge, that would render our fence useless from a legal point of view and cost us a good deal of money to replace or relocate. Privacy: Until December 2009 the two parcels comprising the proposed development were fairly heavily wooded, affording us a good deal of privacy, peace and contentment. All of the trees shielding our patio/pool area (indeed, most of the trees on the lot) have now been removed. Obviously there is no obligation on the part of TL Investment Group to provide us with a privacy screen, so we will absorb the $1500 cost to plant a tall hedge. We are not excited about incurring any additional costs as a result of this project unless there is a compelling reason to do so. In short, we are reasonable people, we have been involved in development projects in the past and we understand the necessity of development. Everything can be negotiated as long as all parties approach the table in good faith. We would appreciate some consideration from both TL Investment Group and the City of Tukwila in understanding how this project proposal affects us and our land. Please keep us informed of all decisions and public meetings related to the proposed development. ick Bidlack and Sheila Coppola 4261 S. 144th St. Tukwila, WA 98168 206-760-4954 rick@signalsandnoises.com sheila@siderealpress.com Mr. William Bayh 4244 S. 146th Street Tukwila, WA 98168 Dear. Mr. Bayh, City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director Thank you for submitting comments for the Foster Short Plat, a proposed 9 -lot development located on two existing parcels at 4419 S 144th Street in Tukwila. Your comments were submitted to the City on February 27, 2010, and related several concerns about the storm drainage design for the new project and the potential for increased storm water runoff to adjacent properties to the south and west of the project site. Your comments were shared with the applicant and staff in the Public Works Department. Excerpts from your comment letter are below in italics, followed by staff's response. At present, the rate that rain water eventually migrates onto my property from the proposed development property is controlled through natural soil filtration. The developer proposes to collect rain water runoff in dry wells sited along the south and west property lines. During heavy rainfall this concentration of collected water near the property lines will potentially filter or leach through the soil and off the developer's property at a much higher rate of flow than it does now. This could lead to water flooding onto my property. I ask that the city of Tukwila require this developer to collect rain water runoff from roofs and paved areas in a tight line system and direct it to a storm drain. To address your comments and comments received from neighboring property owners to the west of the project site, the City requested that the applicant redesign the proposed storm drainage system. The runoff from the roof of the existing house and existing paved surfaces of Lot 1 will infiltrate on site as it has historically. New impervious surfaces from new lots 2, 3, 4, 5, 7, 8, and 9 will be tight lined to the City's storm drainage system. Due to the elevation of Lot 6 and a portion of the new access road adjacent to Lot 7 which prevents gravity flow to the storm drainage system, these areas will continue to infiltrate to native soils. Infiltration trenches originally proposed at the south end of Lot 6 have also been divided, so that there is now only one proposed on the south side of the lot and one proposed on the north side of the lot. This will allow two trees originally proposed for removal to be retained. Please see the attached letter and graphic from the applicant which describes how the new storm drainage design will provide a net reduction from the existing condition of the amount of storm water which infiltrates to soils. Better yet, protect the pond area with a 200 foot buffer zone (300 feet would be ideal). Our community's wild life deserves that a natural source of water be protected. The City of Tukwila regulates wetlands, watercourses, and steep slopes as sensitive areas per state requirements. Staff conducted a site visit of your property and the property located at 4261 S. 144th Street located to the west of the project site on which standing water was observed. The wet area observed on the southeastern corner of 4261 S. 144th Street is not mapped as a wetland or potential wetland according to the City of Tukwila's sensitive area maps. Staff observed during the site visit that this area does not have the hydrologic or vegetative characteristics necessary to be classified as a wetland. Therefore, the City cannot require a protective buffer around this area. As a party of record, you will receive a copy of the preliminary approval letter for the Foster Short Plat. Please let me know if you have any additional questions. Sincerely, tm1t/ imie Reavis Assistant Planner Ryan Larson Senior Surface Water Engineer 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax 206-431-3665 February 28, 2010 City of Tukwila Department of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 Re: Foster Short Plat and SEPA/Environmental Review, Files L10-004, E10-001 Attn: Jaimie Reavis We own the property bordering the entire western side of the proposed development site (parcel # 0040000370). Our concerns with the proposed development fall into four categories: trees, drainage, the fence between our properties, and privacy. Trees: There is a very large maple tree on the boundary between our property and proposed Lot 9, depicted in both the Drainage Plan and the Tree Retention Plan. The trunk of this tree is roughly 3 ft in diameter (measured four feet above grade) and is 90% on our property. Its branches, and therefore roots, extend at least 30 ft out from the trunk in all directions. In addition to the maple, there is a line of medium size evergreens (cedars and junipers) along our eastern border extending from the street south approximately 100 ft. The drip -line on these evergreens is approximately 10 ft out from the trunks. The proposal to dig infiltration trenches at the western ends of Lots 8 and 9 could potentially kill these trees, especially the maple. We would request that any plan to dig within the drip line of these trees involve an assessment by a certified arborist to ascertain the location of the root system and to insure that these trees remain healthy. (We can suggest Favero Greenforest as a qualified tree -risk assessor who has worked with the City of Tukwila in this capacity in the past.) Drainage: The topographical data in the plans show that the western edge of Lot 6 is the lowest point in elevation of the proposed development. What is not shown on any of the plans is that this region is a local low spot, an occasional pond that straddles the property line. It is clear that this area will become the collection basin for much of the runoff from the development (note the proposed "drainage easement" located just north of this region). The development plan as currently proposed will essentially create a large mudhole and breeding ground for mosquitoes in the south-eastern corner of our property, and partially submerge the existing fence. While some kind of wetlands cultivation and retention scheme might be envisioned for this area, it is difficult to imagine one that would be practical to maintain. It may make more sense to backf11 a�Icn regrade this area, wwhich-would-involve dismantling and reconstt ting the fence. We are open to any sensible proposal and stand ready to cooperate. We would request that the plans for the development be amended to include a practical, long-term solution for this area. The current plan, in failing to address this, will only create a problem for us, for our neighbors to the south, and for the future owners of Lot 6. Fence: The survey plan for the proposed development indicates that a portion of the chain link fence along our eastern boundary actually lies a few inches east of the surveyed property line. We are concerned that this fence remain nonetheless undisturbed. We can document that the fence has been in place for over 30 years. Today the fence satisfies the safety requirements of having a swimming pool on the property. (The pool was built about 25 years ago. Both the fence and the pool are still in good condition today.) We would like some assurance that we will still have a chain link fence standing 6 ft above grade upon completion of the proposed development project. That is a legal requirement for us because of the pool, and the current fence satisfies that requirement. We can imagine certain scenarios in the course of the proposed development that would create an expensive problem for us. For example, we have discussed the low spot between our property and Lot 6. The fence dips down and runs through the middle of this area. If someone were to decide to regrade Lot 6 and build a six foot retaining wall along the western edge, that would render our fence useless from a legal point of view and cost us a good deal of money to replace or relocate. Privacy: Until December 2009 the two parcels comprising the proposed development were fairly heavily wooded, affording us a good deal of privacy, peace and contentment. All of the trees shielding our patio/pool area (indeed, most of the trees on the lot) have now been removed. Obviously there is no obligation on the part of TL Investment Group to provide us with a privacy screen, so we will absorb the $1500 cost to plant a tall hedge. We are not excited about incurring any additional costs as a result of this project unless there is a compelling reason to do so. In short, we are reasonable people, we have been involved in development projects in the past and we understand the necessity of development. Everything can be negotiated as long as all parties approach the table in good faith. We would appreciate some consideration from both TL Investment Group and the City of Tukwila in understanding how this project proposal affects us and our land. Please keep us informed of all decisions and public meetings related to the proposed development. ick Bidlack and. Sheila Coppola 4261 S. 144th St. Tukwila, WA 98168 206-760-4954 rick@signalsandnoises.com sheila@siderealpress.com City of Tukwila Department of Community Development FILE NUMBER L10-004 (Short Plat) PL10-003 (Land Use Project) Land Use Routing form for Revisions TO: uilding to Fire Dept. to Police Dept toParks/Rec. to Public Works: Joanna Spencer Project: Foster Short Plat Address: 4419 S 144th Street (parcels 0040000375 & 0040000380) Date transmitted: 2/01/2011 Response requested by: 2/15/2011 Planner: Jaimie Reavis Date response received: COMMENTS 7 rhn,cA I (ammo' 6,11W f Vn c,)1°/7-0 /12 �.�4-(40: Q ir yo -v)'• f 1gq/es'I l.0 to G zrvy/j — DRC review requested Plan submittal requested to Plan approved Plan check date: Comments prepared by: I? September 10, 2010 Mr. Han Phan, PE 5130 S 1'66`h Lane SeaTac, WA 98188 City of -Tukwila Jim Haggerton, Mayo Department of Community.Development. Jack Pace, Directo Re: • Technical Comments Letter, Foster Short Plat • 4419 S 144th Street (parcel numbers 0040000375 and 0040000380) L10-004 Dear Mr. Phan, The City of Tukwila has completed a review of the above short plat application, which was submitted on January 27, 2010 and deemed complete on February 3, 2010. The following list of City staff is the development review team that reviewed the materials submitted as part of the above short plat application: Jaimie Reavis Joanna Spencer Don Tomaso Dave Larson Planning Division of DCD Public Works Department Fire Department Building Division of DCD (206) 431-3659 (206) 431-2440 (206) 575-4407 (206) 431-3678 Comments from each department are listed separately below. For technical questions regarding specific comments listed below by department, please contact the appropriate individual from the above list. Please address any questions related to this letter, the short plat process, and resubmittal directly to the Project Planner, Jaimie Reavis. Planning Division of DCD 1. Demonstrate and show on plans where parking will be provided for Lot #1. 2. Provide legal description of "Tract A" on short plat survey map. If the access and utilities will be within a tract, a detailed maintenance agreement will need to be developed and recorded, which outlines how the maintenance will be shared among property owners of this short plat. You could also change the access road and utilities within the road to be easements across lots in the development rather than a tract. 3. Since storm drainage design for Lot 6 will be revised to move one of the infiltration trenches to the front of the lot, some of the trees on the south side of the lot marked to be removed may be able to be retained. Please revise plan sheet LD1 (9 of 14) to show additional trees that can be retained on Lot 6. 4. Add a detail to the TESC Plan (Sheet EC1, 2 of 14) showing tree protection measures to be installed (see attached sample). The contractor will need to install these prior to the start of work once the Public Works site construction permit has been issued. JR Page 1 of 2 H:\Short Plats\Foster Short Plat \LI0-004 Technical Comments Foster Short Plat.doc 09/10/2010 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 5. _ Add the name of the plat (Foster Short Plat), City of Tukwila file number (L10-004), and a north arrow to the survey map. The survey will need to be in the City of Tukwila format/template. The survey template can be downloaded from the following webpage: http://www.ci.tukwila.wa.us/dcd/dcdplan.html. The template is located at the bottom of the webpage, under the section titled "Planning Documents and Fees". Public Works Department 1. Per the last meeting we had, which included staff from Planning and Public Works, drainage for Lot 6 shall be modified to have one infiltration trench in the back (south side) and one in the front (north side). Revise civil plans to reflect this change. 2. A storm drainage/utility easement along lots 7, 8, and 9 is required since these lots shall have one perforated pipe storm drainage system connecting to the catch basin in S 144th Street. Submit a draft copy for Public Works review prior to recording. 3. Provide a draft copy of Utility Easement(s) and Maintenance Agreement(s), including a maintenance agreement for Tract A. (1) These documents (including the storm drainage/utility easement described above) shall be recorded prior to recording of the Final Short Plat Map, and the recording numbers shall be shown on the short plat map. (2) The utility easements, and maintenance agreement for Tract A should include language stating who will maintain the facilities, and by what portion. Maintenance of the private street lighting along Tract A will need to be included. 4. Owner to sign with Notary a Joint Side Sewer & Hold Harmless Agreement, if two (2) houses are to share one (1) side sewer. Public Works will prepare document for signature, if applicable. Please contact the engineer for this project, Joanna Spencer, for more information. 5. Short plats of more than five lots require a full -width street improvement, including sidewalks on both sides of the street. Sidewalks are shown on both sides of the north -south leg of the street that will serve the development, but not on the east -west portion of the street. The plans will need to be revised to show sidewalks on the east -west portion of the street serving lots 3, 4, 5, and 6. 6. Check with the postmaster to identify the location and type of mailboxes that will be used for the project, to be sure the current sidewalk design does not need to be modified. Fire Department No comments at this time. Building Division of DCD Demolition permits are required for structures to be removed. Next Step Your next step is to revise your plat survey and civil plans to resubmit four sets of plans to the Department of Community If you have any questions please call (206) 431-3659 or send Sincerely, imie Reavis Assistant Planner Enc.: Sample Tree Protection Measures reflect changes the comments above and Development. an email to jreavis@ci.tukwila.wa.us. JR Page 2 of 2 H:\Short Plats\Foster Short Plat \L10-004 Technical Comments Foster Short Plat.doc 09/10/2010 City of Tukwila Department of Community Development FILE NUMBER L10-004 (Short Plat) PL10-003 (Land Use Project) Land Use Routing form for Revisions TO: to Building Eo Fire Dept. fo Police Dept EoParks/Rec. to Public Works: Joanna Spencer Project: Foster Short Plat Address: 4419 S 144th Street (parcels 0040000375 & 0040000380) Date transmitted: 2/01/2011 Response requested by: 2/15/2011 Planner: Jaimie Reavis Date response received: COMMENTS Miwt { mn sre4, Q (A47 +n u S 114.(4 f" w t tcvv, , iAvdAri Om <bah dwa d tm ll Ige -h.tri iii ne1 r.Pc,GL-ion 0'Y' picots 1 / eAi ri4-P,w1--- toil . la? 1W-.17�ilc. i V- � 1,c,1(i K�v5/6� s�6tke,5 Alry,y 5, f' . Ackul�,&� f.4,1-- k I v) / 1 c q £ ICC el rnclw4-hr Des Ir Mah,uc--/ �OtYi N ea cthi'dci-evi (eked -6 or/A.1 c' ithe‘J /fel/ DRC review requested Plan submittal requested Plan approved Plan check date: Comments prepared by: PBS,, Da LAND DEVELOPMENT & CIVIL ENGINEERING CONSULTANTS 5130 S. 166th Lane • SeaTac, WA 98188 • T 206.229.6422 April 9, 2010 Jaimie Reavis Assistant Planner City of Tukwila Department of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 Subject: Foster Short Plat (L10-004 & E10-001) Response to neighborhood concerns Dear Ms. Reavis: This letter is written in response to William Bayh, Rich Bidlack and Sheila Coppola owners of the adjacent properties. Mr. Bayh is concerning the storm water leach through the soil and flooding into his property. Typically, infiltration trench for roof drain was designed with a perforated pipe to collect water and release slowly from the slot holes from the pipe. The water eventually infiltrated slowly into the soil. A soil report was done to verify that the soil condition is adequate for infiltration. The report show that the soil is allows for infiltration. Thus, infiltration was used from one of the method for BMP per King County Stormwater Design Manual. Also, instead having a 2 to 3 feet depth trench, we can increase the depth of trench to 4 feet to insure the elevation of the top of pipe is below the elevation of the pond area. Furthermore, 200 foot to 300 foot buffer zone requirement is only for area of stream, wetland, steep slope or power line, etc. not for pond area when there is a heavy storm event. Mr. Bidlack and Ms. Coppola are concerns fall into 4 categories: Trees, drainage, fence, and privacy. Trees: We're thinking proposing another private storm drain line on the west side of the property and connect to the city storm line on S. 144th Street. 'This storm drain line begins at south of lot 7 and run north. Lot 7, 8, and 9 will connect to this line instead of using infiltration. This will minimize excavation and impacting the tree roof system. We are a sure that our development will not kill any trees on the adjacent property owner. Drainage: True, this area is the lowest point in the development but is not a collection of basin for much of the runoff 110 from the development. The terrain of the ground line sloped toward the west. One of thing we're thinking is to put a modular block wall along the west side of the property (2 to 3 feet away from the property) so we don't have to reconstructs n the existing fence and backfill tg a out 2 to 2.5 feet. _1140101 5-urVey 11m M }3e ti4w 3.�vy� ieibythjied ail Survey -Polo ac hiViidr Fence: This development will not disturb or remove any fence along the west side of the property line. Privacy: We're keeping as many trees as possible if it not conflict with the installation of the infrastructure for the development. We have confident that our development will benefit the adjacent property in the near future. We appreciate your assistance with this project. Please feel free to contact me if you have questions regarding this response to neighborhood concerns. Han Phan, P.E. I Project Engineer Sincerely, PBG, LLC t o Io- vial Sk U -'t ihS k sctbuck a,twt west wd hC° Selo „`tte‘b ! f " iice'"'�.�°�� rift fo' 1 vtd +It,c 1 �eackkam/L-F vocAvAack,v it) 16201,4c1 1040,1 fyfe pg: February 27, 2010 RECEIVED MAR 0 2 2010 COMMUINi4Y OEVELOPMBIT City of Tukwila Department of Community Development 6300 Southcenter Blvd., Ste 100 Tukwila, WA 98188 Re: Foster Short Plat and SEPA/Environmental Review, File #'s L10-004, E10-001 Attn: Jaimie Reavis: I own property at 4244 S 146th St. (since 1988). I am concerned about possible flooding on my property if storm water is not managed effectively by the developer proposing to construct eight new homes at 4419 S 144th St. During periods of heavy winter rain, water often ponds in a low area near the south west corner of the proposed development property and the neighboring property directly to the west of it. My property is to the south of the pond area and is lower in elevation. The water that naturally flows from these neighboring properties onto mine does so through a permeable soil layer on top of impermeable hard pan (typical soil layering in this area). It is effectively controlled on my property by an engineered drainage system. At present, the rate that rain water eventually migrates onto my property from the proposed development property is controlled through natural soil filtration. The developer proposes to collect rain water runoff in dry wells sited along the south and west property Iines. During heavy rainfall this concentration of collected water near the property lines will potentially filter or leach through the soil and off the developer's property at a much higher rate of flow than it does now. This could lead to water flooding onto my property. I ask that the City of Tukwila require this developer to collect rain water runoff from roofs and paved areas in a tight line system and direct it to a storm drain. Better yet, protect the pond area with a 200 foot buffer zone (300 feet would be ideal). Our communities wildlife deserves that a natural source of water be protected. Sincerel William Bayh William Bayh 4244 S 146th St. Tukwila, WA 98168 RECEIVED FEB 012011 TUKWIIA City of Tukwila PUBLIC WORKS Department of Community Development FILE NUMBER L10-004 (Short Plat) PL10-003 (Land Use Project) Land Use Routing form for Revisions TO: ro Building fo Fire Dept. ro Police Dept EoParks/Rec. ublic Works: Joanna Spencer Project: Foster Short Plat Address: 4419 S 144`h Street (parcels 0040000375 & 0040000380) Date transmitted: 2/01/2011 Response requested by: 2/15/2011 Planner: Jaimie Reavis Date response received: COMMENTS 1-( dei n: (GLI Ceivivkri,r f -t e -v' -d /ho /70/ v k G. i t cA4ed Yawl - Si o. ce, - sp- /ou. 4"//3 at connect /4,4 si- / s DLL_ 17-c, ii 512 v<9 Vel, User • 1-to.e& a c . . . - - 1 e.. 0 1.14e4Z-L 4 Ss. A ; , '., ,1 P") U" l� he c !Y�' Ot o) "`" -i WC V • ° 1 • (j) J A 7 4 • i ej,01-' P B SE l G'C�a4 ., ofp W NA? 5 !Pi?ls /491:1/1-r( -) ri)14 Or 40 1-A-t-t94a" r;e7,4-17.:4- it �i�� 2 Jo-Ira-PAAto „� �t-��- ,c41. -e..-0• -d a z� �- Q 6 S s/ Q x 04..._ i y , `s-e_.L—.Q-. Li) Pt iwo-iA4)--e-tA-ol-t-cv- Gi-oi--2 citx2-1 04.19-1,---,912.- .,...1,Q___. Cio+c)", wig I be, ' A �wil2A„. c.�,,,yt. 's z,�,,,,s&g,„, e. .Tykobiht fi c I \ip,„ ac.- I'a- s-4,2 � Ikl�tucey 5vb m �i�taf tin fl- G O -o-o . GQi2 DRC view requested O Pla mitta requested ro Plan approved Plan check date: 4i 23 t W 11 Comments prepared by: JJ September 10, 2010 Mr. Han Phan, PE 5130 S 1661 Lane SeaTac, WA 98188 City of .Tukwila Jim Haggerton, Mayo Department of Community Development Jack Pace, Directo Re: Technical Comments Letter, Foster Short Plat • 4419 S 144th Street (parcel numbers 0040000375 and 0040000380) L10-004 Dear Mr. Phan, The City of Tukwila has completed a review of the above short plat application, which was submitted on January 27, 2010 and deemed complete on February 3, 2010. The following list of City staff is the development review team that reviewed the materials submitted as part of the above short plat application: Jaimie Reavis Joanna Spencer Don Tomaso Dave Larson Planning Division of DCD Public Works Department Fire Department Building Division of DCD (206) 431-3659 (206) 431-2440 (206) 575-4407 (206) 431-3678 Comments from each department are listed separately below. For technical questions regarding specific comments listed below by department, please contact the appropriate individual from the above list. Please address any questions related to this letter, the short plat process, and resubmittal directly to the Project Planner, Jaimie Reavis. Planning Division of DCD I. Demonstrate and show on plans where parking will be provided for Lot #1. �2. Provide legal description of "Tract A" on short plat survey map. If the access and utilities will be within a tract, a detailed maintenance agreement will need to be developed and recorded, which outlines how the maintenance will be shared among property owners of this short plat. You could also change the access road and utilities within the road to be easements across lots in the development // rather than a tract. V. Since storm drainage design for Lot 6 will be revised to move one of the infiltration trenches to the front of the lot, some of the trees on the south side of the lot marked to be removed may be able to be retained. P1 ase revise plan sheet LD 1 (9 of 14) t shqw additional,tre thatsan be retained on Lot 6. - 1ct44ky - w' I 1144 be WV/1U I ;Y►Yrr'horl � in ytrr►t . ,/4. Add a detai to the TESC Plan (Sheet EC1, 2 of 14) showing tree protection measures to be installed (see attached sample). The contractor will need to install these prior to the start of work once the Public Works site construction permit has been issued. JR Page 1 of 2 H:\Short Plats\Foster Short Plat\L10-004 Technical Comments Foster Short Plat.doc 09/10/2010 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 Add the name of the plat (Foster Short Plat), City of Tukwila file number (L10-004), and a north arrow to the survey map: The survey will need to be in the City of Tukwila format/template. The survey template can be downloaded from the following webpage: http://www.ci.tukwila.wa.us/dcd/dcdplan.html. The template is located at the bottom of the webpage, under the section titled "Planning Documents and Fees". Public Works Department t/ 1. Per the last meeting we had, which included staff from Planning and Public Works, drainage for Lot 6 shall be modified to have one infiltration trench in the back (south side) and one in the front (north side). Revise civil plans to reflect this change. C� 4 irGfrtc 1c5f Cirt J2. A storm drainage/utility easement along lots 7, 8, and 9 is required since these lots shall have one perforated pipe storm drainage system connecting to the catch basin in S 144th Street. Submit a draft copy for Public Works review prior to recording. J3. Provide a draft copy of Utility Easement(s) and Maintenance Agreement(s), including a maintenance agreement for Tract A. (1) These documents (including the storm drainage/utility easement described above) shall be recorded prior to recording of the Final Short Plat Map, and the recording numbers shall be shown on the short plat map. (2) The utility easements, and maintenance agreement for Tract A should include language stating who will maintain.the facilities, and by what portion. Maintenance of the private street lighting along Tract A will need to,be included. 4. Owner to sign with Notary a Joint Side Sewer & Hold Harmless Agreement, if two (2) houses are to share one (1) side sewer. Public Works will prepare document for signature, if applicable. Please contact the engineer for this project, Joanna Spencer, for more information. Short plats of more than five lots require a full -width street improvement, including sidewalks on both sides of the street. Sidewalks are shown on both sides of the north -south leg of the street that will serve the development, but not on the east -west portion of the street. The plans will need to be revised to show sidewalks on the east -west portion of the street serving lots 3, 4, 5, and 6. ? 6. Check with the postmaster to identify the location and type of mailboxes that will be used for the project, to be sure the current sidewalk design does not need to be modified. /5. Fire Department No comments at this time. Building Division of DCD Demolition permits are required for structures to be removed. Next Step Your next step is to revise your plat survey and civil plans to reflect changes the comments above and resubmit four sets of plans to the Department of Community Development. If you have any questions please call (206) 431-3659 or send an email to jreavis@ci.tukwila.wa.us. Sincerely, 114Wre imie Reavis Assistant Planner Enc.: Sample Tree Protection Measures JR Page 2 of 2 09/10/2010 H:\Short Plataoster Short Plat \L10-004 Technical Comments Foster Short Plat.doc June 9, 2010 Mr. William Bayh 4244 S 146th Street Tukwila, WA 98168 City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director Re: Foster Short Plat and SEPA/Environmental Review (File #s L10-004, E 10-001) Dear Mr. Bayh, Thank you for submitting your comments related to the Foster Short Plat. Attached is the applicant's response to your comments and comments received from your neighbors, Rick Bidlack and Sheila Coppola. I am getting close to completing my review of the project, and would appreciate any additional comments you have on the project by next Friday, June 18th. You can call me at (206) 431-3659, send me an email or a letter, or make an appointment to come in to our office to discuss your comments and/or to discuss the approach the applicant proposes to address your concerns. Sincerely, Jaimie Reavis Assistant Planner JR Page 1 of 1 06/08/2010 H:\Short Plats\Foster Short Plat\Letter to William Bayh.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 June 8, 2010 Mr. Han Phan, PE 5130 S 166th Lane SeaTac, WA 98188 City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director Subject: Foster Short Plat and SEPA/Environmental Review Applications L10 -004/E10-001 Dear Mr. Phan: The City of Tukwila is working to complete review of your applications, which were submitted for review on January 27, 2010, and which were deemed complete on February 3, 2010. According to TMC 18.104.130, final decisions by the City on all permits shall be issued within 120 days from the date the applicant is notified by the Department that the application is complete. If a final decision cannot be issued within the time limits established by this section, the Department shall provide written notice of this fact to the project applicant. The notice shall include a statement of reasons why the time limits have not been met and an estimated date for issuance of the notice of final decision. Due to additional time needed by staff to review the application, and to address and review comments and responses received during the notice period, a final decision will not be issued within 120 days from the date of completeness. A final decision on the SEPA application is expected by Wednesday, June 16u'; after which staff will either provide comments on the short plat application or issue the Short Plat Preliminary Approval by Wednesday, June 30th. Please let me know if you have any questions or concerns related to this letter or your pending applications. You can reach me by phone at (206) 431-3659 or email at jreavis@ci.tukwila.wa.us. Sincerely, Jaimie Reavis Assistant Planner City of Tukwila JR Page 1 of 1 06/07/2010 H:\Short Plats\Foster Short Plat\120 day letter.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 \t 10-0O1 ,._,..,_, 3,- / \\ 1., - ' -"'.. . . • iJ : : . , ...14,, . • .,: , . t4t.7.10:071 ' ' ' ' °I !.- __. --.. -- , ,... - - Th© Concopt STEDUp zsyoa sw ndRoOrd0 Vinyl, Sung 353 0 EGe3M0@o, %V& gE32115 0 Q236.11 g5C3-01,2Z 10-0O1 Land Development & Civil Engineering Consultants FOSTER SHORT PLAT 4419/44XX SOUTH 144TH TUKWILA, WA 98168 January 2010 I certify that this technical information report and all attachments were prepared either by me or my technical staff working directly under my supervision. R CETED !JAN 21 2010 COMMVMUN5 1 DEVELOPim:ENT THE CONCEPT GROUP Table of Contents SECTION 1: PROJECT OVERVIEW 1 SITE INFORMATION 1 DRAINAGE BASIN 1 SOILS INFORMATION 1 SECTION 2: CONDITIONS AND REQUIREMENTS 2 DESIGN REQUIREMENTS 2 SECTION 3: OFFSITE ANALYSIS 3 RESOURCE REVIEW 3 LEVEL 1 DOWNSTREAM ANALYSIS 4 SECTION 4: FLOW CONTROL /WATER QUALITY ANALYSIS AND DESIGN 4 EXISTING HYDROLOGY 4 DISCHARGE AT NATURAL (EXISTING) LOCATION 4 DEVELOPED SITE HYDROLOGY 4 PERFORMANCE STANDARDS 5 FLOW CONTROL SYSTEM 5 WATER QUALITY SYSTEM 7 DOWNSPOUT INFILTRATION TRENCHES 8 SECTION 5: CONVEYANCE SYSTEM ANALYSIS AND DESIGN 8 100 -YEAR FLOOD/OVERFLOW CONDITION 8 SECTION 6: SPECIAL REPORTS AND STUDIES 8 SECTION 7: OTHER PERMITS 8 SECTION 8: EROSION CONTROL ANALYSIS AND DESIGN 8 CONSTRUCTION SEQUENCE AND PROCEDURE 9 TRAPPING SEDIMENT 9 SECTION 9: BOND QUANTITIES AND DECLARATIONS OF COVENANTS 10 SECTION 10: OPERATIONS AND MAINTENANCE 10 Appendices Appendix A: Appendix B: Appendix C: Appendix D: Appendix E: Appendix F: Site Photos and Figures Soils Information Proposed Drainage Plan Stormwater Facilities Design Erosion Control Plans Maintenance Procedures Acronym Terminology ,,Inch cf Cubic Feet cfs Cubic Feet per Second CMP Corrugated Metal Pipe DI Ductile Iron HDPE High Density Polyvinyl Ethane KCSWM King County Surface Water Manual PGIS Pollution Generating Impervious Surface PVC Polyvinyl Chloride RCP Reinforced Concrete Pipe SCS Soils Service Conservation Sq Ft Square foot General Notes: 1. The information contained in this report is based on a topography and boundary survey prepared by Schroeter Surveying, the King County Assessor's map, City of Tukwila's storm water inventory maps, and on-site observations and measurements. If any changes are made to these drawings or the site that will affect the calculations in this report, the engineer shall be notified. All construction based on this report shall be stopped and shall not proceed until the impact of the changes can be reflected in a supplement report. 2. This report is based on limited subsurface exploration. During construction, if soil conditions are found that are significantly different from those identified in this report, construction should stop until those items affected by the changed conditions can be identified and adjusted, if needed to reflect the changed conditions. 3. This report is prepared for the sole use of client for the purpose of subdividing the property located at 4419/44xx South 144th Street in Tukwila, Washington. All other uses are expressly prohibited without prior written approval from the engineer. 4. All construction related to the drainage system for this project will be in accordance with the 1998 King County Surface Water Design Manual and the 2007 King County Roads Standards unless specifically mentioned in this report and/or approved by the City of Tukwila. Foster Short Plat -Technical Information Report January 2010 SECTION 1: PROJECT OVERVIEW The property is located at 44xx/4419 South 144th Street in the City of Tukwila, Washington. There is currently one (1) single family residence on the property. The project proposes to short plat the existing two (2) parcels into nine (9) single family residential lots. Proposed improvements include the demolition of the existing detached garage and the construction of eight (8) new single-family structures, a private access road, associated utilities and stormwater management facilities. Refer to Appendix A for Figure 1: Vicinity Map and site photos of this project. Site Information Address: 44xx /4419 South 144th Section/Township/Range: NE ''A Sec. 22, T.23N, R.4E of W.M. Size: 80,176 sq ft (approximately 1.84 acre) City, County, State: Tukwila, King County, Washington Governing Agency: City of Tukwila Design Criteria: 1998 King County Surface Water Manual Zone: Single Family Residence — SR6 Water District: King County Water District #125 Sewer District: Valley View Sewer District Drainage Basin The property is within the Lower Green River sub -basin. The entire property drains to one basin with a contributing area of 1.84 acres. The general topography of the site slopes from southeast to northwest. Elevations on the site vary from a high point of 309 feet at the southeastern property line to 286 feet at the northwestern property line, with grades varying from 4.0% to 14.0%. Soils Information Soils Survey The United States Department of Agriculture Natural Resource Conservation Service (NRCS) did not map soils information in the project vicinity because it is an urban area. A Soils Infiltration Study was performed by TJ Engineering Consultants, Inc. Site soils were classified as silty sand, Unified Soil Classification System (USCS) designation SM. The KCRTS equivalent soils group, as defined in Table 3.2.2.6 of the 1998 King County Surface Water Manual (KCSWM), is Till. Refer to Appendix 8 for the Soils Infiltration Study. R09400 - The Concept Group Page 1 Maintenance and operations of all drainage facilities is the responsibility of the applicant or property owner. A Maintenance and Operations Agreement will be placed on the face plat map to ensure that all future owners are legally liable for the upkeep of R09400 - The Concept Group Page 2 Foster Short Plat -Technical Information Report January 2010 the stormwater management facilities. Maintenance and operation guidelines are provided in Section 10 of this report. Core Requirement #7: Financial Guarantees and Liability This project is exempt from this core requirement because the stormwater facilities will be privately maintained. Core Requirement #8: Water Quality This project is located within the Basic Water Quality Menu. A StormFilter Cartridge Treatment System is proposed to address the water quality requirements of the project. Refer to Section 4 of this report for a detailed analysis and discussion of the proposed wetland pond. Special Requirement #1: Other Adopted Area -Specific Requirement Based on information provided by City staff during the pre -application meeting, no other area -specific requirements are imposed on this property. Special Requirement #2: Flood Hazard Delineation Based on FEMA Flood Map #53033C0960F, the project area is located in Zone X, a 500 -year flood plain. Refer to Appendix A for the FEMA map. Special Requirement #3: Flood Protection Facilities The project is not located in a flood hazard area; therefore, it is exempt from Special Requirement #3. Special Requirement #4: Source Control This project is a single-family residential community development. It is not a commercial, industrial. Or multifamily site development; therefore, it is exempt from Special Requirement #4. Special Requirement #5: Oil Control This project not defined as a high -use site per section 1.3.4 of the 1998 KCSWM; therefore, it is exempt from Special Requirement #5. SECTION 3: OFFSITE ANALYSIS Resource Review A resource review was conducted to document existing and potential flooding and erosion problems. • Basin Reconnaissance Summary Reports - Project is in the Lower Green River Basin. No landslide or erosion areas noted in the study area. • FEMA Maps - Based on FEMA Flood Map #53033C0960F, the project area is located in Zone X, a 500 -year flood plain. • Sensitive Areas Folio - None noted in the study area. • Wetlands Inventory - No wetlands or sensitive areas noted in the study area. R09400 - The Concept Group Page 3 Foster Short Plat -Technical Information Report January 2010 • City of Tukwila Storm Drain Asbuilts - City of Tukwila Public Works Department asbuilts for 42nd Avenue South storm drainage improvements were referenced for the downstream analysis. Level 1 Downstream Analysis A downstream analysis was conducted on January 5, 2009. The weather was overcast with temperatures in the mid 40 degrees Fahrenheit. The site is currently developed with a single family house. The general topography of the site slopes from southeast to northwest. Elevations on the site vary from a high point of 309 feet at the southeastern property line to 286 feet at the northwestern property line, with grades varying from 4.0% to 14.0%. Some of the surface infiltrates to native soils. During heavy storm events, stormwater runoff sheet flows to its natural location of discharge along South 144th Street. Stormwater runoff is collected in a catch basin and conveyed in a 12" PVC storm drain along South 144th Street prior to discharging to the 42' Avenue South drainage system. Stormwater is entirely contained in the public storm drainage system beyond a quarter mile from the site prior to discharging to the regional detention pond, known as 42nd Avenue Detention Pond. The 42nd Avenue Detention Pond reduces and filters stormwater for discharge into the North Fork of Gilliam Creek. No existing or potential flooding problems, capacity, or erosion problems were observed. Based on the availability of existing drainage information, the developed site will not create or aggravate existing downstream conditions. SECTION 4: FLOW CONTROL /WATER QUALITY ANALYSIS AND DESIGN Existing Hydrology The project site is 1.84 acres. Surface area calculations for existing onsite conditions are based on the topographic survey performed for the project. Tables 2 summarize the existing condition assumptions for both offsite and onsite contributing areas used for the KCRTS modeling. Discharge at Natural (Existing) Location During heavy rainfall events, stormwater will continue to sheet flow toward South 144`h Street. Developed Site Hydrology The project proposes to short plat the existing two (2) parcels into nine (9) single family residential Tots. Proposed improvements include the demolition of the existing R09400 - The Concept Group Page 4 Table 2 — Existing Conditions Areas (acres) Till Pasture Till Grass Impervious 0.578 1.074 0.188 Discharge at Natural (Existing) Location During heavy rainfall events, stormwater will continue to sheet flow toward South 144`h Street. Developed Site Hydrology The project proposes to short plat the existing two (2) parcels into nine (9) single family residential Tots. Proposed improvements include the demolition of the existing R09400 - The Concept Group Page 4 Foster Short Plat -Technical Information Report January 2010 detached garage and the construction of eight (8) new single-family structures, a private access road, associated utilities and stormwater management facilities. Developed Onsite Assumptions Each residential lot is assumed to consist of approximately 1,900 sq ft to 2,200 sq ft of new impervious surface with the remainder of the property consisting of landscape and lawns. Lot 1 Drainage Design The existing residential structure on Lot 1 will remain. No new stormwater facility is proposed for this property. Stormwater will sheet flow to the private access road and collected in the conveyance system of catch basins and pipes and routed to the stormwater management facilities. Lot 2 - 9 Drainage Design On-site roof stormwater runoff will be collected through an underground drainage system consisting of pipes, yard drains and catch basins. Infiltration trenches are proposed for each of the new residential structures. During heavy rainfall events, stormwater will sheet flow toward the new private access road and collected in a conveyance system of catch basins and pipes and routed to the stormwater detention tank. Private Access Road Drainage Design Stormwater will be collected in a conveyance system of catch basins and pipes and routed to'a 2 -cartridge StormFilter treatment catch basin prior to discharging to the underground stormwater detention tank. Stormwater from a small portion of the private access road will not flow to the detention tank due to the topography of the site. This stormwater will be collected in a catch basin and routed to its own infiltration trench. Performance Standards Level 2 Flow Control This project will create approximately 35,070 sq ft of new impervious surface; therefore, is subject to a full drainage review requiring flow control facilities. Per the City of Tukwila stormwater map, the project is located in a Level 2 flow control area. Conveyance System The proposed conveyance system is designed with sufficient capacity to convey and contain the 25 -year peak flow, assuming developed conditions for onsite tributary areas and existing conditions for offsite tributary areas. Flow Control System KCRTS Hydrologic Model The King County Runoff Time Series (KCRTS) Hydrologic Model is the required methodology under the 1998 King County Surface Water Design Manual for sizing R09400 - The Concept Group Page 5 Foster Short Plat -Technical Information Report January 2010 detention facilities. Sizing credits for Roof Downspout Controls was used to size the detention tank. Per the 1998 KCSWDM, "the roof area may be discounted from the net impervious area used for sizing flow control facilities" where roof runoff is infiltrated. Tables 3-5 summarize the KCRTS inputs for the project area. Table 3 - KCRTS Inputs Rainfall Region SeaTac Scale Factor 1.0 Table 4 - Existing Conditions in KCRTS Model Event Areas (acres) Developed Condition Till Pasture Till Grass Impervious 0.578 1.074 10 -year 0.188 Table 5 - Developed Conditions in KCRTS Model Event Areas (acres) Developed Condition Till Grass Roof Area (Infiltrated, not accounted in model) Impervious 0.741 0.324 10 -year 0.776 Tables 6 summarizes the KCRTS output. Table 6 -Peak Runoff Rates (cfs) Event Existing Condition Developed Condition Developed Condition w/Flow Control 2 -year 0.11 0.25 0.09 10 -year 0.18 0.30 0.18 25 -year 0.21 0.31 0.20 50 -year 0.33 0.45 0.38 100 -year 0.39 0.52 0.47 Detention Pond A storage volume of 5,364 cubic feet is required for this project. An eight (8) feet diameter x 115 feet long tank is proposed to provide this detention capacity. Level 2 flow control performance is demonstrated by the following duration comparison output from KCRTS: Duration Comparison Analysis Base File: foster_ex.tsf New File: tank_outflow.tsf Cutoff Units: Discharge in CFS Fraction of Time Check of Tolerance Cutoff Base New %Change Probability Base New %Change 0.053 1 0.60E-02 0.39E-02 -35.8 1 0.60E-02 0.053 0.047 -10.4 0.065 1 0.40E-02 0.33E-02 -17.6 1 0.40E-02 0.065 0.053 -19.1 0.077 1 0.24E-02 0.26E-02 5.4 1 0.24E-02 0.077 0.079 1.6 0.090 1 0.16E-02 0.17E-02 6.1 1 0.16E-02 0.090 0.091 1.1 R09400 - The Concept Group Page 6 Foster Short Plat -Technical Information Report January 2010 0.102 0.11E-02 0.12E-02 7.5 0.11E-02 0.102 0.103 1.5 0.114 0.73E-03 0.73E-03 0.0 0.73E-03 0.114 0.114 0.0 0.126 0.54E-03 0.52E-03 -3.0 0.54E-03 0.126 0.124 -1.5 0.138 0.33E-03 0.23E-03 -30.0 0.33E-03 0.138 0.132 -4.3 0.151 0.24E-03 0.82E-04 -66.7 0.24E-03 0.151 0.138 -8.4 0.163 0.16E-03 0.82E-04 -50.0 0.16E-03 0.163 0.144 -11.7 0.175 0.49E-04 0.33E-04 -33.3 0.49E-04 0.175 0.171 -2.2 0.187 0.33E-04 0.16E-04 -50.0 0.33E-04 0.187 0.184 -1.6 0.199 0.16E-04 0.00E+00 -100.0 0.16E-04 0.199 0.195 -2.1 0.211 0.16E-04 0.00E+00 -100.0 0.16E-04 0.211 0.195 -7.7 Maximum positive excursion = 0.005 cfs ( 4.7%) occurring at 0.105 cfs on the Base Data:foster_ex.tsf and at 0.110 cfs on the New Data:tank outflow.tsf Maximum negative excursion = 0.014 cfs (-20.6%) occurring at 0.068 cfs on the Base Data:foster_ex.tsf and at 0.054 cfs on the New Data:tank outflow.tsf As shown in the duration analysis, the downstream flow matches the predevelopment duration at the first cutoff; no excursions exceed positive 10%; and more than half (10/14) of the excursions are equal to or less than zero. A comparative duration plot showing the pond outlet and target duration curves with the facility sizing calculations is provided in Appendix D. In addition, the Table 7 shows that the 2 and 10 -year peak release rates are below the corresponding existing peaks, which demonstrates that the Level 1 performance criteria is also satisfied. Table 7 - Peak Flow Comparisons Areas (acres) Return Period Existing Release Rate (cfs) Detention Pond Release Rate (cfs) 2 -year 0.11 0.09 10 -year 0.18 0.18 Water Quality System Approximately 12,829 square feet is pollution -generating impervious surface (PGIS). PGIS is defined as "an impervious surface considered to be a significant source of pollutants in surface and storm water runoff. Such surfaces include those subject to vehicular use or storage of erodible or leachable materials, wastes, or chemicals, and which receive direct rainfall or the run-on or blow-in of rainfall." Non-metal rooftops are not considered PGIS; therefore, are not included in the PGIS area calculations. A 2 -cartridge StormFilter° treatment structure is proposed for this project. The StormFilter is a flow -based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by using 35% of the 2 year developed flow from KCRTS. Refer to Appendix D for detailed water quality calculations. R09400 - The Concept Group Page 7 Foster Short Plat -Technical Information Report January 2010 Downspout Infiltration Trenches The Infiltration Study, prepared by TJ Engineering Consultants, Inc. dated, December 11, 2009 states an average measured infiltration rate of 9.5 inches per hour. This report classifies the soils as medium to fine sand. Per the 1998 King County Surface Water Manual, Section 5.1.1, downspout infiltration trenches shall be a minimum of 75 LF per 1,000 SF of impervious surface for medium sand based on a 2 FT wide trench. Refer to Table to 8 for trench dimensions. Table 8 - Infiltration Trench Design Impervious Surface Area Required Bottom Surface Area Provided Bottom Surface Area Lot 2 Roof -1400 SF 210 SF 210 SF Lot 3 - 9 Roofs= 1800 SF 270 SF 270 SF 650 SF (private road) 95 SF 100 SF SECTION 5: CONVEYANCE SYSTEM ANALYSIS AND DESIGN The proposed conveyance system is designed with sufficient capacity to convey and contain the 100 -year peak flow. Refer to Table 8 and Appendix D for conveyance calculations and details. Table 8 - Capacity Analysis Contributing Basin Pipe Size (in.) Pipe Slope (%) 25 -year Flow (cfs) 100 -year Flow (cfs) Pipe Capacity (cfs) entire private road 8 4.0 0.64 0.77 2.42 100 -Year Flood/Overflow Condition Overflow of the stormwater pond will discharge stormwater to the drainage system located along South 144`h Street. SECTION 6: SPECIAL REPORTS AND STUDIES The Soils Infiltration Study was prepared by TJ Engineering Consultants, Inc. dated, December 11, 2009. No other reports or special studies have been prepared for this project. SECTION 7: OTHER PERMITS Permit for this project included: • Short Plat Approval • Building Construction Permit • Public Works Type C Permit SECTION 8: EROSION, CONTROL ANALYSIS AND DESIGN All erosion and sediment control measures shall be governed by the requirements of the City of Tukwila. An Erosion and Sedimentation Control plan has been prepared to assist the contractor in complying with these requirements and designed to prevent sediment -laden run-off from leaving the site during construction. Refer to Appendix E for Erosion Control plans and details. R09400 - The Concept Group Page 8 Foster Short Plat -Technical Information Report January 2010 The erosion potential of the site is influenced by four major factors: soil characteristics, vegetative cover, topography, and climate. Erosion/ sedimentation control is achieved by a combination of structural measures, cover measures, and construction practices that are tailored to fit the specific site. Construction Sequence and Procedure Prior to the start of any grading activity upon the site, all erosion control measures, including installation of a stabilized construction entrance, shall be installed in accordance with the construction documents. The best construction practice will be employed to properly clear and grade the site and to schedule construction activities. The planned construction sequence for the construction of the site is as follows: 1. Flag or fence clearing limits. 2. Install catch basin protection if required. 3. Grade and install construction entrance(s). 4. Install perimeter protection (silt fence, brush barrier, etc.). 5. Construct sediment ponds and traps. 6. Grade and stabilize construction roads. 7. Construct surface water controls (interceptor dikes, pipe slope drains, etc.) simultaneously with clearing and grading for project development. 8. Maintain erosion control measures in accordance with City of Tukwila and King County standards and manufacturer's recommendations. 9. Relocate erosion control measures or install new measures so that as site conditions change the erosion and sediment control is always in accordance with the King County Erosion and Sediment Control Standards. 10.Cover all areas that will be unworked for more than seven days during the dry season or two days during the wet season with straw, wood fiber mulch, compost, plastic sheeting or equivalent. 11.Stabilize all areas that reach final grade within seven days. 12.Seed or sod any areas to remain unworked for more than 30 days. 13. Upon completion of the project, all disturbed areas must be stabilized and BMPs removed if appropriate. Trapping Sediment Structural control measures will be used to reduce erosion and retain sediment on the construction site. The control measures will be selected to fit specific site and seasonal conditions. The following items will be used to control erosion and sedimentation processes: • Temporary gravel construction entrance • Filter fabric fences (Silt fences) • Ground cover measures such as straw cover and/or hydroseeding • Inlet protection R09400 - The Concept Group Page 9 Foster Short Plat -Technical Information Report January 2010 Vehicle tracking of mud off-site shall be avoided. Installation of a gravel construction entrance will be installed at a location to enter the site. The entrances are a minimum requirement and may be supplemented if tracking of mud onto public streets becomes excessive. SECTION 9: BOND QUANTITIES AND DECLARATIONS OF COVENANTS None known at the time this report was prepared. SECTION 10: OPERATIONS AND MAINTENANCE The owner or operator of the project shall be responsible for maintaining the stormwater facilities in accordance with the requirements as attached in Appendix F. Proper maintenance is important for adequate functioning of the stormwater facilities. If it is unclear whether a problem exists, contact a Professional Engineer. At a minimum, infiltration trenches must be maintained as follows: • Infiltration trenches must be inspected annually and after major storm events to identify and repair any physical defects. Maintenance and operation of the system should focus on ensuring the system's viability by preventing sediment - laden flows from entering the device. Excessive sedimentation will result in a plugged or non-functioning facility. • If the infiltration device has a catch basin, sediment accumulation must be removed on a yearly basis or more frequently if necessary. Prolonged ponding around or atop a device may indicate a plugged facility. • If the device becomes plugged, it must be replaced. • Keeping the areas that drain to infiltration devices well swept and clean will enhance the longevity of these devices. • For roofs, frequent cleaning of gutters will reduce sediment loads to these devices. R09400 - The Concept Group Page 10 Foster Short Plat -Technical Information Report January 2010 Appendix A Site Photos and Figures R09400 - The Concept Group Appendices VICINITY MAP NTS 41:....ar:i the CONCEPT group Land Development and Civil Engineering Consultants 4701 SW Admiral Way, Ste #353 Seattle, WA 98116 P (206) 658-0125 F (206) 658-0127 TheConceptGrp.com FOSTER SHORT PLAT 4419/44XX SOUTH 144TH TUKWILA, WA 98168 Figure 1— Vicinity Map Foster Short Plat January 2010 Looking south onto property from South 144Street. Looking south onto property from South 144` Street. The Concept Group Appendices Foster Short Plat January 2010 Looking west onto property from South 144L Street. Looking east onto property from South 144 Street. The Concept Group Appendices L King County Assessor information for parcel number 0040000375 Taxpayer name Mailing address MORRISON ORVA B C/O MURRAY 17064 CANTERBURY RD BELLINGHAM WA 98229 Address(es) at this parcel None Parcel number 0040000375 Tax Account number 004000037509 Levy code - Jurisdiction TUKWILA Present use Appraised value Vacant(SIng Ie -family) $199,000 o Legal description ADAMS HOME TRS 0 Sales/Quit Claims/Transfers Sale date Sale price Buyer Seller Excise tax number Recording number 1 Instrument type , Sale reason 5214,000 (land) +,1':Q (improvements) $214,000 (total) 09-10-2009 $600,000 TL INVESTMENT GROUP MORRISON ORVA B 5214,000 (land) +,44 (improvements) $214,000 (total) 5214,000 (land) +,IQ (improvements) $214,000 (total) Contract (equity) None 11-30-2003 $0 MORRISON ORVA B MORRISON JACK Quit Claim Deed Estate Settlement • Parcel description Property name Plat name ADAMS HOME TRS Property type R - RESIDENTIAL Plat block 3 Present use Vacant(Single-family) Plat lot 6 Water system WATER DISTRICT Sewer system PUBLIC Access PUBLIC Lot area 40,119 sq. ft. (0.92 acres) Q -S -T -R NE -22-23-4 Street surface PAVED. E Taxable value histo Tax year 2010 Tax status TAXABLE Taxable value reason ; NONE OR UNKNOWN Appraised value 5199,000 (land) + LQ (improvements) $199,000 (total) Taxable value 5199,000 (land) +;Q (improvements) $199,000 (total) 2009 TAXABLE NONE OR UNKNOWN 5214,000 (land) +,1':Q (improvements) $214,000 (total) 5214,000 (land) +,14 (improvements) $214,000 (total) 2008 TAXABLE NONE OR UNKNOWN 5214,000 (land) +,44 (improvements) $214,000 (total) 5214,000 (land) +,IQ (improvements) $214,000 (total) 2007 TAXABLE NONE OR UNKNOWN 590,000 (land) + $Q (improvements) $90,000 (total) 590,000 (land) + IQ (improvements) $90,000 (total) Related resources King County Assessor: King County Assessor: King County Assessor: King County GIS: King County GIS: King County DDES: Permit Applications Report (for unincorporated areas only) King County Treasury Operations: King County Recorders Office: King County Recorders Office: King County Recorders Office: (requires a high speed Internet connection) (any connection speed, but less features than iMAP) (PDF format requires Acrobat) (PDF format requires Acrobat) (a detailed report about the location of this property) This report was generated on 12/1/2009 11:55:52 PM Contact us at 42 2009 King County La King County King County Districts and Development Conditions for parcel 0040000375 Parcel number 0040000375 Drainage Basin Lower Green River - West Address Not Available Jurisdiction Tukwila Zipcode 98168 PLSS NE -22 -23 -4 Kroll Map page 333 Latitude 47.47366 Thomas Guide page 655 Longitude -122.27824 1111 B Electoral Districts TUK 11-2955 Fire district does not apply District 5, - Water district King County Water District 125 (206) 296.1005 j=% Sewer district Valley View Sewer District Congressional district 9 Legislative district School district Seattle school board district does not apply (not in Seattle) District Court electoral district Southwest Water & Sewer district does not apply Parks & Recreation district does not apply Hospital district does not apply Rural library district Rural King County Library System Tribal Lands? No LI King County planning and - designations NA, check with jurisdiction None does not apply Urban does not apply Highline Coal mine hazards? None mapped Erosion hazards? None mapped Landslide hazards? None mapped Seismic hazards? None mapped Forest Production district? Agricultural Production district? does not apply 206 does not apply No No No None mapped 100 -year flood plain? None mapped Wetlands at this parcel? None mapped This report was generated on 12/1/2009 11:57:16 PM Contact us at © 2008 King County Assessor information for parcel number 0040000380 Taxpayer name Mailing address MORRISON ORVA B C/O MURRAY 17064 CANTERBURY RD BELLINGHAM WA 98229 Address(es) at this parcel 4419 S 144TH ST 98168 Parcel number 0040000380 Tax Account number 004000038002 Levy code Jurisdiction TUKWILA Present use Single Famlly(Res Use/Zone) Appraised value $392,000 6 Legal description ADAMS HOME TRS • Sales/Quit Claims/Transfers Sale date Sale price Buyer 09-24-2003 $0 MORRISON ORVA B Seller MORRISON JACK R (ESTATE) Excise tax number . Recording number Instrument type Quit Claim Deed Sale reason Estate Settlement o Parcel description Property name Property type R - RESIDENTIAL Plat name ADAMS HOME TRS Plat block 3 Present use Single Family(Res Use/Zone) Plat lot 7 Lot area 40,119 sq. ft. (0.92 acres) 0 -S -T -R NE -22.23-4 Water system WATER DISTRICT Sewer system PUBLIC Access PUBLIC Street surface PAVED B Residential building description Building 1 of 1 Year built 1916 Year renovated Total living sq. ft. 4,460 1st floor sq. ft. 4,050 1962 Half floor sq. ft. 290 Bedrooms 6 Baths 1/2 baths Stories 1 2nd floor sq. ft. 0 3/4 baths 3 1 0 Building grade Condition 7 -Average Upper floor sq. ft. Average Total basement sq. ft. Finished basement sq. ft. Basement garage sq. ft. Finished basement grade 5 - Fair 0 1,110 120 0 Attached garage sq. ft. 0 Single story fireplace 2 Multi -story fireplace 0 Free-standing fireplace 1 Percent brick or stone 5 Daylight basement Open porch sq. ft. 60 Heat system Forced Air Enclosed porch sq. ft. 0 Deck sq. ft. 160 Heat source Oil El Taxable value histo Tax year 2010 1Tax status I TAXABLE Taxable value reason NONE OR UNKNOWN Appraised value 3199,000 (land) +$193.000 (improvements) Taxable value $199,000 (land) + 8193 000 (improvements) $392,000 (total) $392,000 (total) 2009 TAXABLE NONE OR UNKNOWN 3214,000 (land) + 3292.000 (improvements) $506,000 (total) 3214,000 (land) + 5292.000 (improvements) $506,000 (total) 2008 TAXABLE NONE OR UNKNOWN $214,000 (land) + 3246.000 (improvements) 3214,000 (land) + 3246 OOQ (improvements) $460,000 (total) $460,000 (total) 2007 TAXABLE NONE OR UNKNOWN 390,000 (land) + $362.000 (improvements) 390,000 (land) + 3362 000 (improvements) $452,000 (total) $452,000 (total) Q Related resources King County Assessor: King County Assessor: King County Assessor: King County GIS: King County GIS: King County DDES: Permit Applications Report (for unincorporated areas only) King County Treasury Operations: King County Recorders Office: King County Recorders Office: King County Recorders Office: (requires a high speed internet connection) (any connection speed, but less features than iMAP) (PDF format requires Acrobat) (PDF format requires Acrobat) (a detailed report about the location of this property) Landslide hazards? None mapped Seismic hazards? None mapped 100 -year flood plain? Wetlands at this parcel? does not apply 206 does not apply No No No None mapped None mapped None mapped This report was generated on 12/1/2009 11:58:46 PM Contact us at ® 2008 King County Foster Short Plat —Technical Information Report January 2010 Appendix B Soils Information R09400 - The Concept Group Appendices Foster Short Plat —Technical Information Report January 2010 Appendix C Proposed Drainage Plan R09400 - The Concept Group Appendices NE1/4, SEC. 22—T23N—R4E, W.M. 1441H STA ' 43.69. EX CA701 BASH 26 LF 1r P LCPE 01.05 110' RT ANED GRATE 0 7 east\ senoriCrE__s__ \ 1 OP 0E101110N T fE SNEET ME FOR DET, Si LOT 8 Gt PLTIPC 2 \STA 11+65,I110 RT VI/LACKING TAM 1 (RATE 4. 6 �M (Twp < , r1' =WALK e , `t115 ;I. .,s4JASEMENT........--- .011r I Ij t0 LF 6. 0 -,r%kF�9�' J 07 -.1 (1 . ,LOT "7 R0K19119t1RAION % it I II1 ...17., LOT /n,Hss 0G. Fr.) I 1 OF TANK 0444 LFIr•P90 chasin I3 }Csnc! i 53' w t r. st edge concrete s 1.1' west 48' 2- W/SOIID 1.0091 RT 053 FOR DET t edge c trete is 1.1' west 0.2 eos PVT. ACCESS ROAD Hi1RA1DN TRENCH (SY % 201. % 20) 8 NOTES REFERENCE SHEET NO. DRI SHEET 6 OF 14 SHEETS A WASHED 0301 3/4 - 11/r r R%9D PFRf0tA1ED PPE 0 001 DOSING OR011D PLAN VIEW NTS ROK 02AN ROOF DOWN SPOUT 001 OVERFLOW WYE AHD SRA91 MOCK 1WE.9_ e SOD PPE FNE 1E561 SCREEN ELEVATION VIEW NTS ROOF/FOOTING INFILTRATION TRENCH O SC4LE TIME 1. SEE SHEET CV F01 LEK/Q 2. COI1RACIOR SHALL FELD KRP7 ALL MUMS P002 TO C0161MICEN 3. SEE SLEET SIR F02 STANDARD OTT K TEMA CORSIROC11011 NOTES 4. SEE SHEET CR2 FOR 0 42214(E PROFILES AND MALS S SEE SHEET 0R3 FOR 0[TDl110N TAN( DETALS L SEE SHEET 011 a UT2 FOR UTLEY PLANS 7. FUME HOUSE MATING NEED TO BE A MUM K 15 FEET FROM P5OF09D R*LTRATIIN TRENCH & ALL UISEIES TO EE PLA® UNDERGROUND. SITU. 15 14 O10 LF 6'P 5015 PVC 0005E 0 001 (TTP) ROK NELTRATION 1RD101 (LOT 3 -LOT 9) (2 0 7W X 451. % 2b) SEE NOTE 7 (TVP) H512ONTAI GROW SCALF 70 10 0 TO 20 tSeint 1 inch . 10 H. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 005794 GROND-\ PVC 90 ELBOW. ROTATE TO MT (TV) 6' PVC PPF GOITRE 0 0.05 I r RIO PERFORATED PPE (LEVM) (T,0) END CONNECTION (BETWEEN PERFORATED PIPES) O SCALA NONE 8 S x x tl 1 a 2 4 F F1[G1Oe ®-.r- TWE 2. 9F' W COMM RASH 312 REFERENCE SHEET NO. DR2 SHEET 7 Of 14 SHEETS 311 ®M -11R i N' SIOIOIRIFR IX WyW,,.,■ ..... ..., ..`, SIA Me. 45 R, ■ ice is-TYFE 2481 F --3m FOSTER SHORT PLAT 44XX / 4419 - S. 144TH STREET TUKWILA, WA 98168 DRAINAGE PROFILE AND STORMFILTER DETAILS 3m {-■ ,;i■ ■■'� -_ f8 (,TYPE, , STA 100,74, Q5 LT • s■ ■ 7aI,��■■1� I)R•,.290.0 ■! _-__ IIIII i- o ...a. GOAD ail ail 1 ��mr.. li-- ME,. ]aoI■I■I■II ��J"°TR"• ; ) �� "EMI ----■I■11 =III ■=.Mi� 29t"'I�:II■��■��U1■11 ■!M1W111 _ SI . OR]TCR 0ET UM 11.1__ �iI■�� 6 EX ' ■�� 1 I■ WM ��I .• 1412 ■ 00.0% 09] GRADE■drag■ R93_./-LIR■■��r.11J��az 7 V ,rIL/Mr-_-,====•� IF S . PSC a .7% , aixisLifillIllt Fac g�,y::�,,�y{yy/�ya •• ,. tr • ncKM zm'� SOLD 9 LF ,Ri a n i 10•00 o 00 10 00 13.00 100•50 101.00 PVT. ACCESS ROAD DRAINAGE PROFILE INFILTRATION TRENCH PRORLE ., R010210 CRARwt SCAT/ VERTICAL a+03iY•c SONE WZ10 GRAPHIC0SCALE VERTICAL fAIFIC SGT[ 20 10 0 0 30 5 2.5 0 2.5 5 2010 0 0 30 5 TIC 0 ZS 5 GENERAL NOTES CROWD �v�T 63 �i$$a � 045 pgifi' g „ E i. P,:ig .rte 50Mrtua. RHINO.« MOO S.e.KT:SC. Me M Tc. 21 NOP C3000400 TO 03 50nON,CTON033 ORD 01.1,0.3•00. 517.00,10 013.13 0.03 0.303303 xwaer [COSTING SACKFUL .ter / GU e1 e C.R.T..0331. 3000.00 MO CON0031.30ON OF 00/0-00 WO et 000i ON rnsoucno0 5004, maw. al 530.01,02 00 ACC310 COMM TO UM 0.8.00 n-20 I.00 IOT04. CI ND FIFING 0 153 5•30F03 0 003010 030 FRO00.0 OT CONTRACTOR. 0723.53 ..,000.3 53000100 3030700 �- tx Y`<.: �, I,1iti1. TO TO ov.o�5.a «ems02 r« a m.�.G. ��«0•w..CTON .tiO 6, RO HAT CARILT 5neeee.o os. e100.30.073R � 0 00139.000. MU, TO Or SFLOOLO Of 00ACCIMD0. 03F 3 vwlav5ro a BOUM. TM 00410•300. Or oxTo000. if 00000. 0.0310 Be err 300/0 Nif F303010 Cf 114 SONCTORL. ,aem.a�,..Aw.vw.a..Tmeroa�.ruWAND M..new.a amo.o.«Moa 1 .... ,� ' %.k •• ,. •INIORUNTION . • 'RAP WASTED ROM DIMLY ''RAITH RUST FABRIC MANHOLE STORMF ITER PLAN VIEW_O 30.0 PRECASTMANMOLO STORMPILTER DATA ..• -• 1 .m mveac*m wen . _ 4. 4. • •4• o a i g 3 i g qq NiX3 I ie � cyr `t � n. -i ao�wa 8"e ..�... •. ...._, •' RIGID PERFORATED PIC PPE 1 •_.. .1:44 LAID LEVEL DTP) ueorm w n;3N rt 3p” ... 5.0' •WASHED ROD! 7/4' - T ,/r a�.e, t1. k0,IOM oe w :174%, re « ".4 3. 0...3.•. MANHOLE STORMFILTER - TOP VIEW ter +.n 02.58 v PVT. ACCESS RD. INFILTRATION TRENCH 5 O STS OM -X 1 O 0,00 rz0 SCALE NONE + 3 .,mi. „eC.T «e»>m5".w 100 °tau 5110 0•.M„ w¢ 5 n6 xi Iq N+, Mill '2'' am 5u VANED GRATE iik LGS{ eMu,eaL �e I ��l �� , , 1�IIII11� l! $' � T� �-.o.' See ael.. r0• lid IILIT 00aTOD ;..w o nw b MANHOLE STORMFILTER -SECTION VIEW yerr 111110110Wm C•. C0l1ECTI0N ir Tp. T1oATpN iRENIiIW6'I O V. wu e w W„ MANHOLE STORMFILTER OUTLET DETAIL LyOTCO N-SEWETIT COLLECTION ..Z. k.ra p 0 .v..,o< CATCH BASIN• AYW. Il WA Wil PRECAST 4•' MANHOLE STORMFILTER COMMPRECAST VYA W�7 Pr MANHOLE STORMFILTER ROAD OIL/ �.AT ER SEPARATOR CB �• PLAN AND SECTION VIEWS STANDARD DETAIL 1 TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL Z O SCALE: NONE93 ow w:.......nnIw..r. Eo.o.o:.• STORNIIFILTER ...r..... DETAILS 4 w,em.. Is.e:oe I..wc,....rc.n Iown.. Io.o.ow CALL 48 HOURS BEFORE YOU DIG I 1-800-424-5555 g SCALE: NONE i PRONDE 130IU021 SPAMS SIGN PER OSHA REDWtEMENT (TM ALL RISERS) ELBo11 RESIRICTOR. SEE 6ETAL ROUND MANHOLE COVER MARKED 'CRAW 66111 LOOONG 1301.15 P9911 GRADE 16 OLA OR FABRICATED 1EE AND RI= (ALIAOIUM) r0090' ALUMINUM PIPE SUPPORT STRAP SPACED AT 12'. ANCHOR TO WALL 66111 9E' STARLESS ANCHOR BOLT 1.2' 691 IOD YR MAX W5 EIEW 296.50 HAN01OLD5 STEPS OR MOP MEETING ALL REOOREEIENIS OF KM COMM SID. FIGURE 7-008 LET HANDLE EMEND TO MN =ER SHEAR GALE MTh CONTROL ROD FTA CLEANOUT/DRAIN PER KING COUNTY SID. FIAAE 7-028 CMP CDUPUNG E (101) 296.5D 12' REMDVAHE SECTOR 6 rasa TO BE ATTACHED MTH GA4(EIFD BAND RESDKCTOR PLATE 1.0' mina fl- 291.50 SECTION NTS ELBOW RESTRICTOR DETAIL NIS PLAN VIEW NIS NOTES E (N} 29250 INFLOW PROM DE1EN710N TANK LOCATE LADDER A COVER TO PROWL 22' CLEARANCE PROM LADOER TO TEE AND MS. CB TYPE 2 - 54' FLOW CONTROL STRUCTURE DETAIL O SCALE NONE 115.2' 1-1111. B 152' 5070.2' FINISH GRACE CB ( TYPE 2 -5P - FLOW CONTROL SIRIICIURE SEE DETAIL DOS SHEET 0611E7 TO CB A 1152' 78- ACCESS RIMS MTH LAODER (11P) MEETING ALL REQUIREMENTS OF MG COLN1Y SID. FIGURE 7-008 DESKi1 MWSF.298.50 02' DIA Or CE1EN110N TANK TOP ElEW299. BOTTOM ELEV.291.OD7 = 8'�-1 S LE 1r PVC LB' SEDIMENT STORAGE al 14 TYPE 2-4e 010R0FLIER SEE OETAL CN SHEET 011 8 If 12' PVC SECTION A -A N15 SECTION B -B NIS NOTES WET FROM C13 p 1. ALL METAL PARIS CORROSION RESISTANT. S1ED. PARIS GALVANIZED AND ASPHALT COATED (1 EATMEHT 1 OR BETTER). 2. E 1HE OCHIRACTOR 5FET(5 TO IEE A DIFFERENT PRODUCT IRAN 110667604, CONTRACTOR MUST SUBMIT A REV140N TO CITY OP TURMLA PUBLIC MAWS PGR REMEM AND APPROVAL. DETENTION TANK DETAIL O SCALE: NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. DR3 SHEET 8 Of 14 SHEETS H— LLE uJ 0- m I- H GA O 11000)- O 4 LL a 27, 8 s 8 5 8 a Foster Short Plat -Technical Information Report January 2010 Appendix D Stormwater Facilities R09400 - The Concept Group Appendices TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical Infiltration Study Feinberg Short Plat 10710 22nd Ave. SW Seattle, WA 98146 December 18, 2009 Prepared for The Concept Group 4701 SW Admiral Way, Ste # 353 Seattle, WA 98116 T=Tuy`D'' Tri _1?r ..1- _/2ot0 P.O Box 73746 Puyallup, WA 98373 Puyallup (253) 864-3778 Fax (253) 864-3778 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical December 18, 2009 The Concept Group Anna Nguyen, P.E. 4701 SW Admiral Way, Ste# 353 Seattle, WA 98146 Attention: Anna Nguyen Subject: Infiltration Study Feinberg Short Plat 10710 22nd AVE. SW. Seattle, WA 98146. Dear Ms. Nguyen: At your request we are pleased to present this report summarizing the textural analysis of the site soils and providing design recommendations for infiltrating the roof run-off water. The recommendations contained in this study are based on infiltration testing and textural analysis of site soils sampled at representative locations. Our scope of work for this study was outlined in the E-mail communications sent to us, and the proposal approved on December 9, 2009. Our scope of work for this study included the following: Excavating (2) two test pits and logging the soil profiles, performing (2) two sieve analysis and classification of the soil, performing (3) three EPA Falling Head Infiltration Tests, summarizing our results and providing recommendations. Based on our analysis, it is our opinion that infiltration of the roof run-off water is feasible at the subject site. P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical Project Description We understand that the development will consist of sub -dividing the approximately 18,200 sf. lot to accommodate (2) two new Single Family Residences (SFR), behind the existing residence. The roof run-off from the SFR will be disposed of using infiltration systems designed by The Concept Group based on our analysis of site soils. Subsurface The infiltration trenches for the SFR roof run-off water system will be underlain by silty - sand type soils, Unified Soil Classification System (USCS) designation SM. These soils were surficially loose becoming dense with depth, suitable for infiltration. No ground water was encountered during our test pits. Review of geologic maps for the area identifies glacial till Alderwood series (AgB), 0 to 6% slopes, moderately well drained soils, with surficial weakly consolidated to strongly consolidated substratum. Observations during test pits revealed the native soils to be consistent with AgB till soils. Based on the anticipated bottom of facility elevations, the planned infiltration of roof run-off water should not be adversely impacted by the presence of till, which was encountered at approximately six feet below existing grade, which has a moderately low permeability. At the time field exploration work was performed (December 12th, 2009), the soils were moist, consistent, and within a range of 9 to 13% moisture. In general the soils are to be considered moisture sensitive, at or slightly over optimum in moisture, for the purpose of use as structural fill. Please see the attached soil logs for a more detailed information on encountered soils. Infiltration Evaluation Two test pits and three infiltration tests were performed at proposed infiltration locations. Please see the attached map denoting the approximate locations for Test Pits (TP), and Infiltration (I) tests. The grain size analysis, type of soil, and infiltration test results are summarized for your convenience. Summary Location I-1 I-2 I-3 Depth of strata tested -1.5 to -2.5 below Ex. Grade -1.5 to -2.5 below Ex. Grade -1.5 to -2.5 below Ex. Grade Soils SM SM SM Tested infiltration rate (iph) 12 inch/hr 10 inch/hr 10 inch/hr P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 11 ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical Infiltration recommendations Based on the results of our infiltration tests and observed soil conditions, in our opinion, infiltration of roof run-off water should be feasible for the individual SFR'S. Based on our infiltration data and review of the King County Surface Water Design Manual, the following values and factors of safety should be used: • Measured infiltration rate: 10 inch/hr • F testing =0.30 (EPA Falling Head Test Method) • F plugging = The Concept Group • F geometry = The Concept Group • D = Dept to maximum wet season water table or nearest impervious layer, not reached, test pits terminated at 7.0 feet below existing grade. • W = width of facility, The Concept Group. Limitations Our recommendations and conclusions are based on the site materials observed, selective laboratory testing, and engineering analysis, from the information provided to us, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manor consistent with that level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in the area. No warranty is expressed or implied. Additional services TJ Engineering Consultants Inc. has provided only the specific services requested outlined in the scope of work of this report. No other conclusions should be derived from the geotechnical data gathered from our site exploration without further consultation from our office. TJ Engineering Consultants Inc. should be retained to provide geotechnical services during construction. This is to observe compliance with design concepts, specifications, or recommendations, and allow design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. We do not accept responsibility for performance of foundation or earthwork unless we are retained to review construction drawings and specifications, and to provide construction observation and testing services. P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical We trust this information meets your needs. If you have any questions, please don't hesitate to call, Respectfully submitted, TJ Engineering Consultants Inc. Huy D. Tran P.E. Principle Attachments: Location Plan Particle Size Distribution and USCS Classification Soil Logs P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 . Fax (253)-864-3778 1 11 g 1 2 a li d VICWTTY MAP m 8E1/4, SEC. 1—T23N—R3E, W.M. T3W 107711 STREET nn: a <' t :. .. cur., n ewm aive nepiwt _eruct,) e ficec .8 -w 11 TIM rwnn�.en..10 10 006 a0.,.A9n4T Wmee pmio 1 8' w7ro�IA MTa m' \ natn�mw of ccotee \ � , omw . Mt, 1 1 - 11!2 1:11010 .1 CR • 101111 nm 1 4> 02101 4C Oe."0 1 94 I16511ek0yn1 .- a:r'--lII0081111 R /OR O 10 10O91A GG= -70801 lX 1i)QDIf 1161 01 I6):t1Plt ea 'sr* mirk it mi so' UDC OFFEM /11,123.4.131 4> OM1* a1 0-0 WAT L )� f eM on i 1.I9ro✓ 6i.e.ar lao . S. 1 - -- Y.R` . _.:m—._J ,.-, pf, rot 766(0—L � - - .1f Havoc 0110 67.15 a oe` MOM MMY1m 01.00610131 Vnerth ecoe (20Th XM pt=e.)9�.0' o•cI 1 cermet., Nirow% en), 1 DRI I 1 IX 0141 To II 76101476 PLAN 10..60.01 Noun, p6723723 1wn0 .e6nr ../cep 424235 0.0:. -esto �att.e pour aco.. pna:m.1 ena teT 1021TIL/1201094/4 m 10 010 m 1 M. 20 OWNER INFORMATION CONSULTANT8 GTO 10®0 I2034 - 1410 A1[ 03.101 3661111. M 1900 TAX PARCEL. NUM86i 900190 VERTICAL DATUM 131221111 OMURA WIND 031110. 0.11001 IONIC 104 P71 114E 010-00 1K011.1012 DX 0033 RN KT 111141011C8 M 0 OS 1000 x TOO CIS AT 0119;101 Cf 100 FL WW1 011211 MIEN 07414111 - 10001 IRT NAVIN CNa4 611PYETOR DE 111071 OOP 00001- 0401 801000 41 - 3001/1131013 91101109 04 P.O. 801 03 10112. M 1110 1041401 10 01012 COMM(xn swain nop )12-1421 NOTA 11111104. IL COMM IO1091OPO[1111. PIS LEGAL DESCRIP110N x 921.0111111117 O x 000 IO 0001 (I MAT 0010 6 1 90000470 CCM= CF 1.190 g 101E011091 NO 00 A1pf�>OfMQf MO930010001100001 I/ 013 01 11010 9104 II ECC10D FIAT KRI6•M MO MINIX 079/101010 601101:113 7D x NOTES p 101x!141010 4> 401 6 01 41000 3-04 42 10 6 81 418 3- 0 CAU. 48 HOURS BEFORE YOU DIG 1-800-424-5555 1 9761790400 PR • 0.0 A.111 1/17041/1 1181000 Ft,:.x--..=,1.-7.1,16•-.-4-:.6.6x.::; RINKF ON ATF Nal DETAL _.1. MI NOW COMM AY 21 00 m STREET 11.4PROVEMENT NTS NO. G10 BY REv0O0DESCAP0O9 JCS NO. 809100 109E DATE 9-07.2009 mono er. H. H. PHAN 0163(831 H.11. PHAN OECIODOO A. T. NGUYBI PRoi LOGIC C. D. ALLAN , CONCEPT land�ftres 000 OOM Oros 0* .940204 910767. WA 118008 T (206) 80811120 F (208) 6060027 teule,T190ONCEPT 11Pm0 FEINBERG SHORT PLAT 10710 - 22ND AVE SW SEATTLE, WA 98146 REFEIBCE SWEET NO. DRi DRAINAGE AND ROADWAY PLAN AND DETAILS SMEET OF 2 awn Particle 5 5 £ T 0 E 5 fi m m t7 N PS' t�S Size a A it Distribution (p� e o 4 v qQ} S a� E A Report 8 8 i! 100 90 '- • • 80 1 — -- " 70 0: —• • Z 60 it Z 50 W 0 W 40 a • 30 ~` - - • 20 10 0 -- 500 100 10 GRAIN 1 01 0.01 0.001 SIZE - mm % GRAVEL % SAND % FINES %COBBLES CRS. FINE CRS. MEDIUM FINE SILT CLAY 0.0 7.0 16.0 10.0 19.0 28.0 20.0 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Brown Silty Soil 1.5 in. 1 in. 3/4 in. 1/2 in. 100.0 96.0 93.0 89.0 Atterbera Limits 3/8 in. #4 #10 87.0 77.0 67.0 PL= LL= PI= Coefficients #60 #60 #100 #200 37.0 37.0 27.0 20.0 D 7.97 D 0.987 D50=0.475 85= 60= D30= 0.178 015= D10= Cu= Cc= Classification USCS= SM AASHTO= Remarks Tested & Calculated by: M. Blackwell Reviewed by: Mike Blackwell Sampled -12/14/09, Received -12/14/09, Tested -12/16/09 * (no specification provided) Sample No.: 01 Source of Sample: TP -1 Date: 12/16/09 Location: Elev./Depth: 2 ft. Testing Laboratory, Inc. Client: TJ Engineering Project: Feimberg Project No: 09-273 Plate 481 Particle t0 M N. fi :i Size o R Distribution a R o op 8.7 i! 'k Report 3 N oN 100 • 90 • 60 70 N • W 60 _Z • • Z 50 W U CL a 40 30 20 10 0 . 500 100 10 GRAIN 1 01 0.01 0.001 SIZE - mm % GRAVEL % SAND % FINES %COBBLES CRS. FINE CRS. MEDIUM FINE SILT 1 CLAY 0.0 0.0 6.0 5.0 20.0 27.0 42.0 SIEVE PERCENT SPEC.` PASS? Material Description SIZE FINER PERCENT (X=NO) Lt Bin Silty Soil w/Clays 3/4 in. 1/2 in. 3/8 in. #4 100.0 99.0 98.0 94.0 Atterbera Limits #10 #40 #60 89.0 69.0 59.0 PL= LL= PI= Coefficients #100 #200 50.0 42.0 D 1.29 D 0.263 D50=0.150. 85= 60= D30= 015= 010= Cu= Cc= Classification USCS= SM AASHTO= Remarks Tested & Calculated by: M. Blackwell Reviewed by: Mike Blackwell Sampled -12/14/09, Received -12/14/09, Tested -1 2/16/09 i (no specification provided) Sample No.: 02 Source of Sample: TP -1 Date: 12/16/09 Location: Elev./Depth: 4 ft. A.A.R. Testing Laboratory, Inc. Client: TJ Engineering Project: Feimberg Project No: 09-273 Plate 482 TJ ENGINEERING CONSULTANTS INC. Civil Engineers, Structural, Transportation, Environmental, Geotechnical Test Pit Logs December 12th, 2009 Feinberg Short Plat Location: 10710 22nd Ave, Seattle WA. 98146 Test pit 1 excavated in the center area of the propose infiltration trench for lot # 2. 0.0'-1.0' light brown, well graded (SM) fill, frozen at time of excavation. 1.0'-1.5' dark brown, organic rich top soil, former ground surface. 1.5'-6.0' light brown, moist , dense, silty sand (SM), trace iron oxide stains. 6.0'-7.0' light gray, moist, very dense, glacial till, silty sand with gravel (SM). Test pit -1 terminated at seven (7') feet below existing grade with no ground water table encountered. Test Pit 2 excavated in the center area of the proposed infiltration trench for lot # 1. 0.0'-0.5' light brown, well graded SM fill, frozen at time of excavation. 0.5'-5.5' medium brown, dense, moist, silty -sand (SM), trace iron oxide stains. 5.5'-7.5' medium gray, very dense, moist, glacial till, silty sand with gravel(SM). Test pit -2 terminated seven and a half feet (7.5') below existing grade with no ground water table encountered. P.O Box 73746 • Puyallup, WA 98373 • Puyallup (253) 864-3778 • Fax (253)-864-3778 Foster Short Plat —Technical Information Report January 2010 Appendix D.1 Flow Control R09400 - The Concept Group Appendices Foster Short Plat Detention Calculations 19 -Jan -10 Note 1: PGIS (pollution generating surface) includes approximately 300 - 400 sq ft per lot for driveway/parking and entire SF of access road. Note 2: Roof areas for new lots infiltrated; therefore those areas are not included in the developed condition modeling per sizing credits. KCRTS INPUT (EXISTING CONDITION) Impervious Area (SF) Existing Proposed Till GRASS 1.074 ACRE IMPERVIOUS 0.188 ACRE Existing House 3,998 3,998 Existing Garage (to be demolished) 1,390 - Existing Driveway & Patio 2,818 2,818 25 -year peak flow 0.212 cfs New Lots (#2 - #9) Roof 0.328 14,100 New Lots (#2 - #9) Driveway 0.386 3,100 KCRTS INPUT (DEVELOPED CONDITION, BEFORE DETENTION) Private Road & Sidewalk 0.741 9,729 Shoulder Improvement & Sidewalk 0.776 1,325 Infiltrated (not in model) 0.324 ACRE Total Impervious Surface 8,206 35,070 Total PGIS 1 2,818 12,829 Total Pervious Surface 71,970 32,277 25 -year peak flow 0.308 cfs Total Project Size 80,176 80,176 Note 1: PGIS (pollution generating surface) includes approximately 300 - 400 sq ft per lot for driveway/parking and entire SF of access road. Note 2: Roof areas for new lots infiltrated; therefore those areas are not included in the developed condition modeling per sizing credits. KCRTS INPUT (EXISTING CONDITION) Till PASTURE 0.578 ACRE Till GRASS 1.074 ACRE IMPERVIOUS 0.188 ACRE TOTAL 1.841 ACRE 2 -year peak flow 0.105 cfs 10 -year peak flow 0.182 cfs 25 -year peak flow 0.212 cfs 50 -year peak flow 0.328 cfs 100 -year peak flow 0.386 cfs KCRTS INPUT (DEVELOPED CONDITION, BEFORE DETENTION) Till GRASS 0.741 ACRE IMPERVIOUS 0.776 ACRE Infiltrated (not in model) 0.324 ACRE TOTAL 1.841 ACRE 2 -year peak flow 0.252 cfs 10 -year peak flow 0.301 cfs 25 -year peak flow 0.308 cfs 50 -year peak flow 0.451 cfs 100 -year peak flow 0.523 cfs 0.137 KCRTS Detention Pond Inputs: Number of Intervals 30 First Interval = 50% of existing 2 -year event 0.053 Interval Size = (50 year event - 50% 2 year event)/(# of intervals - 1) 0.010 Qmax for orifice 1 = 4/3 of 50% 2 year event 0.070 cfs Infiltration Bottom Area, SF (per KCSWM for fine sand) Bottom Area = 150 SF per 1000 SF new impervious surface KCRTS OUTPUT AFTER DETENTION/FLOW CONTROL 2 -year peak flow 0.094 cfs 10 -year peak flow 0.184 cfs 25 -year peak flow 0.195 cfs Foster Short Plat KCRTS Peak Flow Data - 01/12/10 Flow Frequency Analysis Time Series File:foster_ex.tsf Project Location:Sea-Tac - --Annual Flow Rate (CFS) 0.173 0.105 0.212 0.069 0.103 0.182 0.168 0.386 Computed Peak Flow Rates --- Rank Time of Peak Peaks 4 2/09/01 6 1/05/02 2 2/27/03 8 8/26/04 7 1/05/05 3 1/18/06 5 11/24/06 1 1/09/08 2:00 16:00 7:00 2:00 8:00 16:00 3:00 6:00 Flow Frequency Analysis - - Peaks - - Rank Return Prob (CFS) Period 0.386 1 100.00 0.212 2 25.00 0.182 3 10.00 0.173 4 5.00 0.168 5 3.00 0.105 6 2.00 0.103 7 1.30 0.069 8 1.10 0.328 50.00 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0.091 0.980 Developed Onsite Condition without Detention Flow Frequency Analysis Time Series File:foster_dev.tsf Project Location:Sea-Tac - --Annual Flow Rate (CFS) 0.254 0.200 0.308 0.207 0.252 0.269 0.301 0.523 Computed Peak Flow Rates--- Flow Frequency Analysis Rank Time of Peak - - Peaks - - Rank Return Prob 5 8 2 7 6 4 3 1 Peaks 2/09/01 1/05/02 2/27/03 8/26/04 10/28/04 1/18/06 10/26/06 1/09/08 2:00 16:00 7:00 2:00 16:00 16:00 0:00 6:00 (CFS) -0.523 0.308 0.301 0.269 0.254 0.252 0.207 0.200 0.451 Period 1 100.00 2 25.00 3 10.00 4 5.00 5 3.00 6 2.00 7 1.30 8 1.10 50.00 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0.091 0.980 Developed Onsite Condition with Detention Flow Frequency Analysis Time Series File:tank_outflow.tsf Project Location:Sea-Tac - --Annual Flow Rate (CFS) 0.184 0.049 0.116 0.047 0.094 0.168 0.195 0.473 Computed Peaks Peak Flow Rates--- Flow Frequency Analysis Rank Time of Peak 3 2/09/01 7 1/06/02 5 3/06/03 8 8/24/04 6 1/05/05 4 1/18/06 2 11/24/06 1 1/09/08 16:00 5:00 20:00 0:00 9:00 21:00 5:00 8:00 - - Peaks - - Rank Return Prob (CFS) (ft) Period 0.473 7.07 1 100.00 0.990 0.195 7.01 2 25.00 0.960 0.184 7.01 3 10.00 0.900 0.168 7.00 4 5.00 0.800 0.116 5.09 5 3.00 0.667 0.094 4.11 6 2.00 0.500 0.049 2.76 7 1.30 0.231 0.047 2.45 8 1.10 0.091 0.380 7.05 50.00 0.980 Foster Short Plat Retention/Detention Facility January 19, 2010 Type of Facility: Detention Tank Tank Diameter: 8.00 ft Tank Length: 115.00 ft Effective Storage Depth: 7.00 ft Stage 0 Elevation: 0.00 ft Storage Volume: 5364. cu. ft Riser Head: 7.00 ft Riser Diameter: 18.00 inches Number of orifices: 2 Full Head Pipe Orifice # Height Diameter Discharge Diameter (ft) (in) (CFS) (in) 1 0.00 1.05 0.079 2 3.25 1.15 0.069 4.0 Top Notch Weir: None Outflow Rating Curve: None Stage Elevation Storage Discharge Percolation (ft) (ft) (cu ft) (ac -ft) (cfs) (cfs) 0.00 0.00 0. 0.000 0.000 0.00 0.01 0.01 6. 0.000 0.003 0.00 0.02 0.02 12. 0.000 0.004 0.00 0.03 0.03 18. 0.000 0.005 0.00 0.04 0.04 25. 0.001 0.006 0.00 0.05 0.05 31. 0.001 0.007 0.00 0.07 0.07 43. 0.001 0.008 0.00 0.08 0.08 50. 0.001 0.008 0.00 0.09 0.09 56. 0.001 0.009 0.00 0.10 0.10 62. 0.001 0.009 0.00 0.22 0.22 140. 0.003 0.014 0.00 0.34 0.34 221. 0.005 0.017 0.00 0.45 0.45 298. 0.007 0.020 0.00 0.57 0.57 384. 0.009 0.023 0.00 0.69 0.69 473. 0.011 0.025 0.00 0.81 0.81 564. 0.013 0.027 0.00 0.93 0.93 658. 0.015 0.029 0.00 1.05 1.05 753. 0.017 0.031 0.00 1.17 1.17 850. 0.020 0.032 0.00 1.28 1.28 941. 0.022 0.034 0.00 1.40 1.40 1042. 0.024 0.035 0.00 1.52 1.52 1143. 0.026 0.037 0.00 1.64 1.64 1247. 0.029 0.038 0.00 1.76 1.76 1351. 0.031 0.040 0.00 1.88 1.88 1456. 0.033 0.041 0.00 2.00 2.00 1563. 0.036 0.042 0.00 2.12 2.12 1670. 0.038 0.043 0.00 2.23 2.23 1769. 0.041 0.045 0.00 2.35 2.35 1878. 0.043 0.046 0.00 2.47 2.47 1987. 0.046 0.047 0.00 2.59 2.59 2097. 0.048 0.048 0.00 2.71 2.71 2207. 0.051 0.049 0.00 2.83 2.83 2317. 0.053 0.050 0.00 2.95 2.95 2427. 0.056 0.051 0.00 3.06 3.06 2528. 0.058 0.052 0.00 3.18 3.18 2639. 0.061 0.053 0.00 3.25 3.25 2703. 0.062 0.054 0.00 3.26 3.26 2712. 0.062 0.054 0.00 3.27 3.27 2721. 0.062 0.055 0.00 3.29 3.29 2740. 0.063 0.057 0.00 3.30 3.30 2749. 0.063 0.059 0.00 3.31 3.31 2758. 0.063 0.061 0.00 3.32 3.32 2767. 0.064 0.064 0.00 3.33 3.33 2777. 0.064 0.065 0.00 3.35 3.35 2795. 0.064 0.066 0.00 3.36 3.36 2804. 0.064 0.067 0.00 3.48 3.48 2914. 0.067 0.073 0.00 3.60 3.60 3023. 0.069 0.078 0.00 3.71 3.71 3123. 0.072 0.082 0.00 3.83 3.83 3231. 0.074 0.086 0.00 3.95 3.95 3339. 0.077 0.089 0.00 4.07 4.07 3446. 0.079 0.093 0.00 4.19 4.19 3552. 0.082 0.096 0.00 4.31 4.31 3657. 0.084 0.099 0.00 4.43 4.43 3760. 0.086 0.102 0.00 4.54 4.54 3854. 0.088 0.105 0.00 4.66 4.66 3955. 0.091 0.107 0.00 4.78 4.78 4055. 0.093 0.110 0.00 4.90 4.90 4153. 0.095 0.112 0.00 5.02 5.02 4249. 0.098 0.115 0.00 5.14 5.14 4344. 0.100 0.117 0.00 5.26 5.26 4436. 0.102 0.119 0.00 5.37 5.37 4518. 0.104 0.122 0.00 5.49 5.49 4606. 0.106 0.124 0.00 5.61 5.61 4691. 0.108 0.126 0.00 5.73 5.73 4773. 0.110 0.128 0.00 5.85 5.85 4852. 0.111 0.130 0.00 5.97 5.97 4928. 0.113 0.132 0.00 6.09 6.09 5000. 0.115 0.134 0.00 6.21 6.21 5068. 0.116 0.136 0.00 6.32 6.32 5127. 0.118 0.138 0.00 6.44 6.44 5186. 0.119 0.140 0.00 6.56 6.56 5239. 0.120 0.142 0.00 6.68 6.68 5286. 0.121 0.144 0.00 6.80 6.80 5325. 0.122 0.146 0.00 6.92 6.92 5354. 0.123 0.147 0.00 7.00 7.00 5364. 0.123 0.149 0.00 7.10 7.10 5364. 0.123 0.612 0.00 7.20 7.20 5364. 0.123 1.460 0.00 7.30 7.30 5364. 0.123 2.550 0.00 7.40 7.40 5364. 0.123 3.850 0.00 7.50 7.50 5364. 0.123 5.320 0.00 7.60 7.60 5364. 0.123 6.750 0.00 7.70 7.80 7.90 8.00 8.10 8.20 8.30 8.40 8.50 8.60 8.70 8.80 7.70 7.80 7.90 8.00 8.10 8.20 8.30 8.40 8.50 8.60 8.70 8.80 Hyd Inflow Outflow Target ******* 1 2 3 4 5 6 7 8 0.52 0.30 0.27 0.25 0.31 0.17 0.20 0.21 Calc 0.47 0.20 0.17 0.18 0.12 0.09 0.05 0.05 5364. 5364. 5364. 5364. 5364. 5364. 5364. 5364. 5364. 5364. 5364. 5364. 0.123 7.280 0.123 7.770 0.123 8.230 0.123 8.670 0.123 9.090 0.123 9.490 0.123 9.870 0.123 10.240 0.123 10.590 0.123 10.930 0.123 11.270 0.123 11.590 Peak Stage Elev 7.07 7.07 7.01 7.01 7.00 7.00 7.01 7.01 5.09 5.09 4.11 4.11 2.76 2.76 2.45 2.45 Duration Comparison Anaylsis Base File: foster_ex.tsf New File: tank_outflow.tsf Cutoff Units: Discharge in CFS Cutoff 0.053 0.065 0.077 0.090 0.102 0.114 0.126 0.138 0.151 0.163 0.175 0.187 0.199 0.211 Storage (Ac -Ft) 0.123 0.123 0.123 0.123 0.099 0.080 0.052 0.045 (Cu -Ft) 5364. 5364. 5364. 5364. 4303. 3483. 2251. 1967. Fraction of Time Che Base New %Change 0.60E-02 0.39E-02 -35.8 0.40E-02 0.33E-02 -17.6 0.24E-02 0.26E-02 5.4 0.16E-02 0.17E-02 6.1 0.11E-02 0.12E-02 7.5 0.73E-03 0.73E-03 0.0 0.54E-03 0.52E-03 -3.0 0.33E-03 0.23E-03 -30.0 0.24E-03 0.82E-04 -66.7 0.16E-03 0.82E-04 -50.0 0.49E-04 0.33E-04 -33.3 0.33E-04 0.16E-04 -50.0 0.16E-04 0.00E+00 -100.0 0.16E-04 0.00E+00 -100.0 Probability 0.60E-02 0.40E-02 0.24E-02 0.16E-02 0.11E-02 0.73E-03 0.54E-03 0.33E-03 0.24E-03 0.16E-03 0.49E-04 0.33E-04 0.16E-04 0.16E-04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ck of Base 0.053 0.065 0.077 0.090 0.102 0.114 0.126 0.138 0.151 0.163 0.175 0.187 0.199 0.211 Maximum positive excursion = 0.005 cfs ( 4.7%) occurring at 0.105 cfs on the Base Data:foster_ex.tsf and at 0.110 cfs on the New Data:tank outflow.tsf Maximum negative excursion = 0.014 cfs (-20.6%) occurring at 0.068 cfs on the Base Data:foster_ex.tsf and at 0.054 cfs on the New Data:tank outflow tsf Tolerance New 0.047 0.053 0.079 0.091 0.103 0.114 0.124 0.132 0.138 0.144 0.171 0.184 0.195 0.195 %Change - 10.4 - 19.1 1.6 1.1 1.5 0.0 - 1.5 - 4.3 -8.4 - 11.7 -2.2 - 1.6 - 2.1 - 7.7 O O 00 vault_out.dur o target.dur • 1 1 1 1 11111 1 1 1 1 1111 1 1 1 1 1111 1 1 1 1 11111 1 1 1 1 1111 10-4 10-3 10-2 10-1 10° Probability Exceedence C.2.3—INFILTRATION TRENCHES AND DRYWELLS FIGURE C.2.0 TYPICAL DOWNSPOUT INFILTRATION SYSTEM (" 4 i rfiltration trench PLAN VIEW NTS ' rig d or 6" flexible perforated pipe 4" rigid or 6" fle4ible perforated pipe owerfl au splash block roof drain sump wlsdid lid roof drain dUwater 10 aaQ � separator b 4 1-4.level 1 . washed rock _ N. 4: a l. Q e A_Q4 0' fine mesh screen CB surep w/solid Iic PROFILE VIEW filterfabric NTS SECTION A NTS compacted backlit! 4" rigd or 6" flexible perforated pipe washed rack 1 1/2"-314" Small Site Drainage Requirements 9/1/98 C-13 Foster Short Plat -Technical Information Report January 2010 Appendix D.2 Water Quality Calculations R09400 - The Concept Group Appendices %.►� ;‘0111 CONSTRUCTION PRODUCTS INC. Size and Cost Estimate Prepared by Kathryn Thomason on January 4, 2010 Foster Short Plat — Stormwater Treatment System Tukwila, WA Information provided: • Total contributing area = 0.195 acre • Impervious area = 0.195 acre • Water quality flow, Qwq = 0.0558 cfs • Peak hydraulic flow rate, Qpeak = 0.230 cfs • Presiding agency = City of Tukwila Assumptions: • Media = ZPG cartridges • Cartridge Height = 18" • Cartridge Flow rate = 15 gpm • Drop required from RIM to outlet = 2.3' minimum Size and cost estimates: The StormFilter is a flow -based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by using 60% of the developed 2 - year flow rate using KCRTS. The StormFilter for this site was sized based on treatment flow rate of 0.0558 cfs. To accommodate this treatment flow rate, CONTECH Stormwater Solutions recommends using a steel two -cartridge CatchBasin StormFilter (see attached detail). The estimated cost of this size system is $9.800, complete and delivered to the jobsite. The contractor is responsible for setting the CatchBasin StormFilter and all external plumbing. The steel CatchBasin StormFilter has an internal bypass capacity of 1.0 cfs, which does not exceed the peak flows from this site. ©2008 CONTECH Construction Products Inc. 11835 NE Glenn Widing Dr., Portland OR 97220 www.contech-cpi.com Toll-free: 800.548.4667 Fax: 800.561.1271 Page 1 of 1 TS -P026 Foster Short Plat —Technical Information Report January 2010 Appendix D.3 Conveyance Calculations R09400 - The Concept Group Appendices King County Rational Method Q=CXIRXA Rational Method Per 1998 King County Surface Water Manual Project: Designed By: Date: Foster Short Plat Anna Nguyen, P.E. 19 -Jan -10 Legend Q = peak flow rate in cubic feet per second C = runoff coefficients, for pavements & roofs C = 0.90, lawns C = 0.25 A = contributing area in acres IR = rainfall intensity in inches per hour IR = (PR) X (iR) PR = precipitation for the 24-hour duration storm event as interpolated from isopluvial maps iR = (aR) x (Tc) (-bR) Tc= time of concentration to initial inlet=5 min aR and bR = coefficients used to adjust the equation for the design storm return frequency R Manning's Equation for Pipe Capacity Calculations 8" ADS N12 @ 4.0% Diameter of pipe (inches) Percent Full Flow (%, see chart) Slope of Pipe (%) Manning's Coefficient Hydraulic Radius Area in Flow (SF) Pipe Capacity (cfs) 95 4.0 Hydraulic Radius: 95% Full Flow = 75% Full Flow = 50% Full Flow = 25% Full Flow = 0.191 0.201 0.167 0.098 0.014 0:19,t�1. Area in Flow: 95% full -flow = 75% full -flow = 50% full -flow = 25% full -flow = 0.343 0.281 0.175 0.068 2.4176 Velocity 7.06 FPS entry block Calculated values King County Stormwater Management Manual Table 3.2.1B T, iR Design Storm Event aR bR 2 years 1.58 0.58 5.0 0.62 5 years 2.33 0.63 5.0 0.85 10 years 2.44 0.64 5.0 0.87 25 years 2.66 0.65 5.0 0.93 50 years 2.75 0.65 5.0 0.97 100 years 2.61 0.63 5.0 0.95 Event PR IR IR 2 yr 2.00 0.62 1.24 10 yr 2.90 0.87 2.53 25 yr 3.40 0.93 3.18 100 yr 4.00 0.95 3.79 Basin Impervious C value Pervious C value Impervious Area (sf) Pervious Area (sf) Impervious Area (ac) Pervious Area (ac) Q10 Q25 Q1oo private road 0.90 0.25 9,800 0.22 0.00 0.51 0.64 0.77 Total 0.51 0.64 0.77 Runoff coefficients "C" values from King County Stormwater Management Manual Table 3.2.1A, Impervious area assumed roof and pavement, Pervious area assumed lawns. Foster Short Plat —Technical Information Report January 2010 Appendix E Erosion Control R09400 - The Concept Group Appendices NOTES J011115 N BIER FABRIC SHALL 8E SPLICED AT POSTS USE STARES. NRE RINGS. OR EQUIVALENT 10 ATTACH FABRIC TO POSE. 1 H I u�6MAL POST 10A NG MAY BE NCREASED TO 10 E IRE BACKING 6 USED Y X 4- WOOD POSTS. STEEL FENCE POS15, REBAR, OR EOUVALENT FRIER FABRIC FENCES STALL BE NSTALLED ALONG CONTOUR 111E1(VER POSSIBLE. DESK?N AND INSTALLATION 8PEC09CATiONS Y X Y X 14 GA WOE OR EOUYNDR, 6 STANDARD STRFNCM FABRIC USED. Rave FABRIC BAD0DL TRENCH METH NAME S L OR 3/4' - 1.5' WISHED GRAVEL 1. THE CE0TEERE USED MUST MEET TIE STANDARDS LISTED BELOW A COPY OF THE MAMIFACRR6R.S FABRIC SPEC61CA1ON5 MUST BE AVALABE ON SITE ADS (ASHY D-4751) - 30-100 SERE Siff (0.60-0.15no,) FOR SIT ELM 50-100 SIEVE SZE (0.30-0.15mn) FOR OTER FABDCS WATER PERITTWTY (ASHY D-449) 0.02 4C-1 INA GRAB 1EN66E STRENGTH (AST I D-4632) - 180 LEO MDL FOR EXTRA STRENGTH FABRIC 100 LBS MN FOR STANDARD STRENGTH FABRIC GRAB TENSER ELONGATON (ASHY 0-4632). 30% MAL ULTRANOLEM RE95TANCE (ASHY D-4355)- 702 MIL 2 STANDARD STRENGTH FABRIC REQUIRES RICE BACKING TO INCREASE ME STRENGTH OF THE FENCE YWE BA00N0 OR CLOSER POST 4ACNG MAY BE REOURED RR EXTRA STRENGTH FABRIC 6 FEND R%ORRANDE WARRANT A STRONGER FENCE 1 MERE THE EDUCE 6 MEWLED, ME SCFE WALL BE NO STEEPED NAN 741V. SILT FENCE DETAIL PER KING COUNTY SIMI FIGURE 0.11A SCALE: NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 0 UNDISTURBED GROUND MAP4TENANCE STANDARDS 1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2 6 CNNCENIRATED FLOWS ARE EVIDENT UPE(L OF TIE FENCE MY MUST BE INTERCEPTED AND CONVEYED TO A SE001ENT TRAP OR POND. 1 IT 6 IMPORTANT TO CHECK ME UPHU. SIDE OF ME FENCE FED SIGNS OF THE FENCING CLOGGING AND ACING AS A BARRIER TO FLOW AND TEN CAUSING OUNNELBATION OF FLOWS PARALLEL TO THE FENCE 6 M5 OCCURS, REPLACE THE FENCE AND OR REMOVE THE TRAPPED $FOMENT. 4. SEDWENT MUST BE REMOVED MEN IT IS 6 HIM. 5. 6 TIE FILTER FABRIC HAS DETERIORATED DUE TO THE ULIRAVIO ET BR0AI0OWH, IT SHALL BE REPLACED. CONTRACTOR TO PROTECT MID FROM BENG TRACKED ONTO TE PUBLIC RDA) MAINTENANCE STANDARDS 1. ANY ACCUMULATED SED06217 ON OR ARCRLU WET PROTECTION SHALL BE REMOVED A EDIATELY. SDMENT SHALL NOT BE REMOVED VIM WATER, AND ALL SEDIMENT MUST BE DISPOSED CE AS ELL ON 91E OR HAULED OFF SITE 2 ANY MOMENT N ME CATOI BASH INSERT SHALL BE REMOVED MEN 4E SEDIMENT HAS FOIID ONE TBID OF ME AVAUBLE STORAGE ME FLIER MEDIA FOR ME INSERT SHALL BE CLFANFD OR REPLACED AT LEAST 11011DLLY. I REGULAR MANIFNANCE 6 00110*L FOR CATO1 BASIN PROTECTOR UNLIKE MANY EONS OF PROTECTOR THAT FAL GRADUALLY, CATCH BASVI POIECIIO1 ILL FM SID00LY AID C016tCTELY 6 NOT MAJNTANED PROPERLY. CATCH BASIN INSERT CATCH BASIN SEDIMENT CONTROL NOTES THIS OVAL 6 OLY SODIAIIC. ANY N4RT 6 ALLOYED THAT HAS A MN. 0.5 CUBIC FEET OF STORAGE NM ME 16A6 10 DEWAIER ME STORED SEDIMENT, PROVE( AN OVERFLOW. AND CAN BE EASLY MANTAMED. INLET PROTECTION DETAIL O PER MOD COUNTY 51011 MUM 0.16E SCALE NOTE ASPHALT PAVEMENT 106 UN. EDGE OF DOSTDD PAIOIENT INSTALL DRIVEWAY CULVERT 6 MERE 6 A ROADSIDE R425' MN. DITCH AS PER KING COUNTY ROAD STANDARDS 4' TO 6 QUARRY $PALLS 1(0T0(GE UNDER NE NOTES 15' ML PROVIDE FULL WOE OF INGRESS/EGRESS AREA AS PER MOD COUNTY ROAD STANDARDS. DRIVEWAYS 91A11 BE PAVED TO ME EDGE OF RXNT-OF-WAY PRIOR TO NSTALAION Of ME CONS1RUC1XN D4IRANCE 10 AVOID DAMAGING OF THE ROADWAY. IT 6 RECOIBEIDED THAT THE ENTRANCE BE CROWED SO THAT RUNOF DRAMS OFT THE ROAD. MAINTENANCE STANDARDS 1. QUARRY SPARS SHALL BE AlOED 6 ME PAD 6 N0 LONGER N ACCORDANCE NTH DE SPEIFICAIIO/S 2 6 TIE ENTRACE 6 NOT PREIEMTNG SE00(NT FRON MGM TRACTFD ONTO PAVEMENT. MEN ALTERNATIVE YF)SUIES TO KEEP THE Swum FREE OF SFD0011 SHALL B USED. MS MAY MCWOE STREET SIEFPNO, AN 010EASE M ME DO4NSONS O DE ENTRANCE OR THE INSTALLADIN OF A NEEL WASH. 6 WASHING IS USED. FT SHALL BE OQE ON ME AREA NDWRED 161)1 CRUSHED ROOK, Alf) WASH WATER MALL CRAM 10 A MOMENT TRAP OR POND. 1 ANY SEC/WENT THAT IS TRACED ONTO PAVEMENT 91N1 BE REMOVED MEDIAIDY BY SYEEPING THE SFD01F11T COLLECTED 8Y %EEMIG SMALL BE REMOVED OR STAMIZED OHSTL THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOM1 THE STREET EXCEPT NEN MEMO 6 INEFFECTIVE AND THERE 6 A THREAT TO PUBLIC SAFETY F IT 6 NECESSARY TO WASH DE Soul... THE CO6TRUCION OF A SMALL 9N6' 94ALL BE CONSIDERED. THE SIDOEIFT 0OUD MEN BE HASHED N10 1HE SAR 4. ANY ROOK $PALLS THAT ARE LOOSENED FROM DE PAD AHD END UP ON ME ROADWAY 9LUL BE REMOVED 00(DIAIELY. S E 110661S ARE OCEANS CR DOING TIE STE AT PORTS OTHER THAT ME CO ISMIICION ENTRANCE(5), moan (4CIXN 14.1) SAIL BE INSTALLED ON OWNER TRAFFIC. CONSTRUCTION ENTRANCE DETAIL O PER ICING COON1T SO011 EXANE D.14.A SCALE NONE REFERENCE SHEET N0. EC2 SHEET 3 OF 14 SHEETS CO CO 1 U SECTION C.3 EROSION AND SEDIMENT CONTROL MEASURES FIGURE C.3.0 SILT FENCE INSTALLATION AND MAINTENANCE 9/1/98 C-30 Small Site Drainage Requirements Foster Short Plat -Technical Information Report January 2010 Appendix F Maintenance Procedures R09400 - The Concept Group Appendices KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 3 - CLOSED DETENTION SYSTEMS (PIPESITANKS) Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Storage Area Plugged Air Vents One-half of the cross section of a vent is blocked at any point with debris and sediment Manhole Catch Basins Debris and Sediment Joints Between Tank/Pipe Section Tank Pipe Bent Out of Shape Cover Not in Place Locking Mechanism Not Working Cover Difficult to Remove Ladder Rungs Unsafe Accumulated sediment depth exceeds 10% of the diameter of the storage area for 'A length of storage vault or any point depth exceeds 15% of diameter. Example: 72 -inch storage tank would require cleaning when sediment reaches depth of 7 inches for more than 1/2 length of tank. Any crack allowing material to be transported into facility Any part of tank/pipe is bent out of shape more than 10% of it's design shape Cover is missing or only partially in place. Any open manhole requires maintenance. Mechanism cannot be opened by one maintenance person with proper tools. Bolts into frame have less than % inch of thread (may not apply to self-locking lids.) One maintenance person cannot remove lid after applying 801bs of lift. Intent is to keep cover from sealing off access to maintenance. King County Safety Office and/or maintenance person judges that ladder is unsafe due to missing rungs, misalignment, rust, or cracks. See "Catch Basins" Standards No. 5 Vents free of debris and sediment All sediment and debris removed from storage area. All joint between tank /pipe sections are sealed Tank/ pipe repaired or replaced to design. Manhole is closed. Mechanism opens with proper tools. Cover can be removed and reinstalled by one maintenance person. Ladder meets design standards allows maintenance person safe access. See "Catch Basins" Standards No. 5 1998 Surface Water Design Manual 9/1/98 A-1 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 4 - CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Component Defect Condition When Maintenance is Needed Results Expected When Maintenance is Performed General Cleanout Gate Orifice Plate Overflow Pipe Manhole Catch Basin Trash and Debris (Includes Sediment) Structural Damage Damaged or Missing Damaged or Missing Obstructions Obstructions Distance between debris build-up and bottom of orifice plate is less than 1-1/2 feet. Structure is not securely attached to manhole wall and outlet pipe structure should support at least 1,000 lbs of up or down pressure. Structure is not in upright position (allow up to 10% from plumb). Connections to outlet pipe are not watertight and show signs of rust. Any holes --other than designed holes --in the structure. Cleanout gate is not watertight or is missing. Gate cannot be moved up and down by one maintenance person. Chain leading to gate is missing or damaged. Gate is rusted over 50% of its surface area. Control device is not working properly due to missing, out of place, or bent orifice plate. Any trash, debris, sediment, or vegetation blocking the plate. Any trash or debris blocking (or having the potential of blocking) the overflow pipe. See "Closed Detention Systems" Standards No. 3 See "Catch Basins" Standards No. 5 All trash and debris removed. Structure securely attached to wall and outlet pipe. Structure in correct position. Connections to outlet pipe are water tight; structure repaired or replaced and works as designed. Structure has no holes other than designed holes. Gate is watertight and works as designed. Gate moves up and down easily and is watertight. Chain is in place and works as designed. Gate is repaired or replaced to meet design standards.. Plate is in place and works as designed. Plate is free of all obstructions and works as designed. Pipe is free of all obstructions and works as designed. See "Closed Detention Systems' Standards No. 3 See 'Catch Basins" Standards No. 5 9/1/98 1998 Surface Water Design Manual A-2 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 5 - CATCH BASINS Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is performed General Trash & Debris (Includes Sediment) Trash or debris of more than 1/2 cubic foot which is located immediately in front of the catch basin opening or is blocking capacity of the basin by more than 10% Trash or debris (in the basin) that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. Trash or debris in any inlet or outlet pipe blocking more than 1/3 of its height. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). Deposits of garbage exceeding 1 cubic foot in volume Structure Damage to Corner of frame extends more than 3/4 inch past Frame and/or Top Slab curb face into the street (If applicable). Cracks in Basin Walls/ Bottom Sediment/ Misalignment Top slab has holes larger than 2 square inches or cracks wider than 1/4 inch (intent is to make sure all material is running into basin). Frame not sitting flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Cracks wider than 1/2 inch and longer than 3 feet, any evidence of soil particles entering catch basin through cracks, or maintenance person judges that structure is unsound. Cracks wider than 1/2 inch and longer than 1 foot at the joint of any inlet/ outlet pipe or any evidence of soil particles entering catch basin through cracks. Basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. No Trash or debris located immediately in front of catch basin opening. No trash or debris in the catch basin. Inlet and outlet pipes free of trash or debris. No dead animals or vegetation present within the catch basin. No condition present which would attract or support the breeding of insects or rodents. Frame is even with curb. Top slab is free of holes and cracks. Frame is sitting flush on top slab. Basin replaced or repaired to design standards. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Basin replaced or repaired to design standards. 1998 Surface Water Design Manual 9/1/98 A-3 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 5 - CATCH BASINS (CONTINUED) Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is performed Fire Hazard Vegetation Pollution Catch Basin Cover Cover Not in Place Locking Mechanism Not Working Cover Difficult to Remove Ladder Metal Grates (If Applicable) Ladder Rungs Unsafe Trash and Debris Damaged or Missing. Presence of chemicals such as natural gas, oil and gasoline. Vegetation growing across and blocking more than 10% of the basin opening. Vegetation growing in inlet/outlet pipe joints that is more than six inches tall and less than six inches apart. Nonflammable chemicals of more than 1/2 cubic foot per three feet of basin length. Cover is missing or only partially in place. Any open catch basin requires maintenance. Mechanism cannot be opened by on maintenance person with proper tools. Bolts into frame have less than 1/2 inch of thread. One maintenance person cannot remove lid after applying 80 lbs. of lift; intent is keep cover from sealing off access to maintenance. Ladder is unsafe due to missing rungs, misalignment, rust, cracks, or sharp edges. Grate with opening wider than 7/8 inch. Trash and debris that is blocking more than 20% of grate surface. Grate missing or broken member(s) of the grate. NO. 6 DEBRIS BARRIERS (E.G., TRASH RACKS) No flammable chemicals present. No vegetation blocking opening to basin. No vegetation or root growth present. No pollution present other than surface film. Catch basin cover is closed Mechanism opens with proper tools. Cover can be removed by one maintenance person. Ladder meets design standards and allows maintenance person safe access. Grate opening meets design standards. Grate free of trash and debris. Grate is in place and meets design standards. Maintenance Components Defect Condition When Maintenance is Needed Results Expected When Maintenance is Performed. General Trash and Debris Metal Damaged/ Missing Bars. Trash or debris that is plugging more than 20% of the openings in the barrier. Bars are bent out of shape more than 3 inches. Bars are missing or entire barrier missing. Bars are loose and rust is causing 50% deterioration to any part of barrier. Barrier clear to receive capacity flow. Bars in place with no bends more than 3/4 inch. Bars in place according to design. Repair or replace barrier to design standards. 9/1/98 1998 Surface Water Design Manual A-4 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 8 - FENCING Maintenance Components Defect Conditions When Maintenance is Needed Results Expected When Maintenance is Performed General Wire Fences Missing or Broken Parts Erosion Damaged Parts Any defect in the fence that permits easy entry to a facility. Erosion more than 4 inches high and 12-18 inches wide permitting an opening under a fence. Post out of plumb more than 6 inches. Top rails bent more than 6 inches. Any part of fence (including post, top rails, and fabric) more than 1 foot out of design alignment. Missing or loose tension wire. Missing or loose barbed wire that is sagging more than 2-1/2 inches between posts. Extension arm missing, broken, or bent out of shape more than 1 1/2 inches. Deteriorated Paint or Part or parts that have a rusting or scaling Protective Coating Openings in Fabric condition that has affected structural adequacy. Openings in fabric are such that an 8 -inch - diameter ball could fit through. Parts in place to provide adequate security. No opening under the fence that exceeds 4 inches in height. Post plumb to within 1-1/2 inches. Top rail free of bends greater than 1 inch. Fence is aligned and meets design standards. Tension wire in place and holding fabric. Barbed wire in place with less than 3/4 inch sag between post. Extension arm in place with no bends larger than 3/4 inch. Structurally adequate posts or parts with a uniform protective coating. No openings in fabric. 1998 Surface Water Design Manual 9/1/98 A-5 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 10 - CONVEYANCE SYSTEMS (PIPES & DITCHES) Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Pipes Open Ditches Catch Basins Debris Barriers (e.g., Trash Rack) Sediment & Debris Vegetation Damaged Trash & Debris Sediment Vegetation Erosion Damage to Slopes Rock Lining Out of Place or Missing (If Applicable). Accumulated sediment that exceeds 20% of the diameter of the pipe. Vegetation that reduces free movement of water through pipes. Protective coating is damaged; rust is causing more than 50% deterioration to any part of pipe. Any dent that decreases the cross section area of pipe by more than 20%. Trash and debris exceeds 1 cubic foot per 1,000 square feet of ditch and slopes. Accumulated sediment that exceeds 20 % of the design depth. Vegetation that reduces free movement of water through ditches. See "Ponds" Standard No. 1 Maintenance person can see native soil beneath the rock lining. See "Catch Basins: Standard No. 5 See "Debris Barriers" Standard No.6 NO. 11 - GROUNDS (LANDSCAPING) Pipe cleaned of all sediment and debris. All vegetation removed so water flows freely through pipes. Pipe repaired or replaced. Pipe repaired or replaced. Trash and debris cleared from ditches. Ditch cleaned/ flushed of all sediment and debris so that it matches design. Water flows freely through ditches. See "Ponds" Standard No. 1 Replace rocks to design standards. See "Catch Basins" Standard No. 5 See "Debris Barriers" Standard No. 6 Maintenance Component Defect Conditions When Maintenance is Needed Results Expected When Maintenance is Performed General Weeds (Nonpoisonous) Safety Hazard Trash or Litter Trees and Shrubs Damaged Weeds growing in more than 20% of the landscaped area (trees and shrubs only). Any presence of poison ivy or other poisonous vegetation. Paper, cans, bottles, totaling more than 1 cubic foot within a landscaped area (trees and shrubs only) of 1,000 square feet. Limbs or parts of trees or shrubs that are split or broken which affect more than 25% of the total foliage of the tree or shrub. Trees or shrubs that have been blown down or knocked over. Trees or shrubs which are not adequately supported or are leaning over, causing exposure of the roots. Weeds present in less than 5% of the landscaped area. No poisonous vegetation present in landscaped area. Area clear of litter. Trees and shrubs with less than 5% of total foliage with split or broken limbs. Tree or shrub in place free of injury. Tree or shrub in place and adequately supported; remove any dead or diseased trees. 9/1/98 1998 Surface Water Design Manual A-6 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 12 - ACCESS ROADS/ EASEMENTS Maintenance Component Defect Condition When Maintenance is Needed Results Expected When Maintenance is Performed General Road Surface Shoulders and Ditches Trash and Debris Blocked Roadway Settlement, Potholes, Mush Spots, Ruts Vegetation in Road Surface Modular Grid Pavement Erosion Damage Weeds and Brush Trash and debris exceeds 1 cubic foot per 1,000 square feet i.e., trash and debris would fill up one standards size garbage can. Debris which could damage vehicle tires (glass or metal). Any obstruction which reduces clearance above road surface to less than 14 feet. Any obstruction restricting the access to a 10 to 12 foot width for a distance of more than 12 feet or any point restricting access to less than a 10 foot width. When any surface defect exceeds 6 inches in depth and 6 square feet in area. In general, any surface defect which hinders or prevents maintenance access. Weeds growing in the road surface that are more than 6 inches tall and less than 6 inches tall and less than 6 inches apart within a 400 - square foot area. Build-up of sediment mildly contaminated with petroleum hydrocarbons. Erosion within 1 foot of the roadway more than 8 inches wide and 6 inches deep. Weeds and brush exceed 18 inches in height or hinder maintenance access. Roadway free of debris which could damage tires. Roadway free of debris which could damage tires. Roadway overhead clear to 14 feet high. Obstruction removed to allow at least a 12 foot access. Road surface uniformly smooth with no evidence of settlement, potholes, mush spots, or ruts. Road surface free of weeds taller than 2 inches. Removal of sediment and disposal in keeping with Health Department recommendations for mildly contaminated soils or catch basin sediments. Shoulder free of erosion and matching the surrounding road. Weeds and brush cut to 2 inches in height or cleared in such a way as to allow maintenance access. 1998 Surface Water Design Manual 9/1/98 A-7 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 13- WATER QUALITY FACILITIES F.) Leaf Compost Filters Maintenance Defect Component Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Above Ground Open Swale Below Ground Vault Sediment accumulation on Geo - Textile/ media Trash and debris accumulations Sediment/ debris in drain/ yard drains/ clean -outs. Vegetation Leaf Compost Media Short -Circuiting Erosion Damage to Slopes Damaged Geo -Textile Fabric. • Rock Pad Missing or out of place Damaged Pipes V -Notch Weir Assemblies Sediment Accumulation on Geo - Textile/ Media. Sediment Accumulation in Vault Trash/ Debris Accumulation Sediment in Drain Pipes/ Yard Drains/ Clean -Outs Sediment depth exceeds 0.25 -inches. Trash and debris accumulated on compost filter bed. When the yard drain CB's and clean -outs become full of sediment and/ or debris. Vegetation impending flow through section, or encroaching into compost media. Drawdown of water through the leaf compost, takes longer than 12 -hours, and/ or flow through the overflow pipes occurs frequently. When Channeled flow occurs over the leaf media; and where flow perks through the media at the baffles. Eroded damage over 2 -inches deep where cause of damage is prevalent or potential for continued erosion is prevalent. When fabric is torn, deteriorated, raveled, etc. Soil beneath the pad is visible. Any part of the pipe system that is crushed, damage due to corrosion, and/ or settlement. Flow is not being uniformly spread over filter media. Sediment depth exceeds 0.25 -inches. Sediment depth exceeds 6 -inches in first chamber. Trash and debris accumulated on compost filter bed. When drain pipes, clean -outs, yard drains become full with sediment and/ or debris. No sediment deposits on fabric layer which would impede permeability of the fabric. Trash and debris removed from compost filter bed. Remove the accumulated material from the facility. Vegetation is mowed or eradicated such that flow is no longer impeded. Replace media with new to design specifications, in addition to replacing fabric. Flow is uniform over the entire width of the media section, and concentrated percolation does not occur at the baffle walls. Media needs to be graded and re -set at the baffles to form a seal. Weir plate may need to be adjusted in addition. Slopes should be stabilized by using proper erosion control measures. Fabric replaced as necessary. Replace or rebuild the rock pad to design standards. Pipe repaired or replaced. Clean, repair or replace the weir systems. No sediment deposits on fabric layer which would impede permeability of the fabric and compost media. No sediment deposits in vault bottom of first chamber. Trash and debris removed from the compost filter bed. Remove the accumulated material from the facilities. 9/1/98 1998 Surface Water Design Manual A-8 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES NO. 13 - WATER QUALITY FACILITIES (CONTINUED) F.) Leaf Compost Filter (Continued) Maintenance Component Defect Condition When Maintenance is Needed Results Expected When Maintenance is Performed Below Ground Leaf Compost Media Short Circuiting Plugged/ Damaged Elbows Damaged Geo -Textile Fabric Rock Pad Missing or Out of Place Damaged Pipes Access Cover Damaged/ Not Working V -Notch Weir Assemblies Vault Structure Includes Cracks in Wall, Bottom, Damage to Frame and/ or Top Slab Baffles Access Ladder Damaged Drawdown of water through the leaf compost, takes longer than 12 -hours, and/ or overflow occurs frequently. When seepage occurs along the vault wall and corners occur. Flow tends to backup unusually high in the first chamber of the vault. Fabric is torn, deteriorated, raveled, etc. Soil beneath the pad is visible. Any part of the pipes that are crushed, damaged due to corrosion and/ or settlement. Cover cannot be opened, one person cannot open the cover, corrosion/ deformation of cover. Flow does not spread uniformly over filter media by weir section. Cracks wider than 1/2 -inch and any evidence of soil particles entering the structure through the cracks, or maintenance/ inspection personnel determines that the vault is not structurally sound. Baffles corroding, cracking warping, and/ or showing signs of failure as determined by maintenance/ inspection person. Ladder is corroded or deteriorated, not functioning properly, missing rungs, cracks, and misaligned. Cracks wider than 1/2 -inch at the joint of any inlet/outlet pipe or any evidence of soil particles entering the vault through the walls. Replace media with new compost to specifications, in addition to replacing fabric. Percolation of water occurs along the walls and corners and not through the media section. Media needs to be re -set along the vault wall and corners to form a semi -seal. Clean out the elbow fittings and/ or replace if damaged. Fabric replaced as necessary. Replace or rebuild the rock pad to design standards. Pipe repaired and/ or replaced. Cover repaired to proper working specifications or replaced. Clean, repair and/ or replace the weir plate section, or adjust height. Vault replaced or repaired to design specifications. Repair or replace baffles to specification. Ladder replaced or repaired and meets specifications, and is safe to use as determined by inspection personnel. No cracks more than 1/4 -inch wide at the joint of the inlet/ outlet pipe. 1998 Surface Water Design Manual 9/1/98 A-9 APPENDIX A MAINTENANCE STANDARDS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES B.) Catch Basin Inserts Maintenance Defect Component Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Catch Basin Sediment Accumulation Trash and Debris Accumulation Inspection Media Insert -Water Saturated Media Insert -Oil Saturated General When sediment forms a cap over the insert media of the insert and/ or unit. Trash and debris accumulates on insert unit creating a blockage/ restriction. Inspection of media insert is required. Catch basin insert is saturated with water, which no longer has the capacity to absorb. Media oil saturated due to petroleum spill that drains into catch basin. Regular interval replacement due to typical average life of media insert product. No sediment cap on the insert media and it's unit. Trash and debris removed from insert unit. Runoff freely flows into catch basin. Effluent water from media insert is free of oils and has no visible sheen. Remove and replace media insert Remove and replace media insert. Remove and replace media at regular intervals, depending on insert product. 9/1/98 1998 Surface Water Design Manual A-10 • City of Tukwila Department of Community Development File Number L10-004 E10-001 CsEPA) LAND USE PERMIT ROUTING FORM TO: puilding * Planning I Public Works I Fire Dept. n Police Dept. Parks/Rec Project: Foster Short Plat Address: 4419 S 144th Street Date transmitted: 2/03/2010 Response requested by: 2/19/2010 Staff coordinator: Jaimie Reavis Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) Pre -application meeting under file #PRE09-016. pa/4611 pi -v4.7 r, "Pe V-64 1V Ze Plan check date: Comments Update date: y� ` /" i`0 prepared by: � • City of Tukwila Department of Community Development File Number L10-004 E10-001 C5EPA) LAND USE PERMIT ROUTING FORM TO: wI Building 3I Planning I Public Works Fire Dept. 1❑1 Police Dept. Parks/Rec Project: Foster Short Plat Address: 4419 S 144th Street Date transmitted: 2/03/2010 Response requested by: 2/19/2010 Staff coordinator: Jaimie Reavis Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) Pre -application meeting under file #PRE09-016. `Ao @-\-\\."\-s w.A - Plan check dat \2\VD Comments prepared by:� Update date: February 3, 2010 Mr. Han Phan, PE 5130 S 166th Lane SeaTac, WA 98188 City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director NOTICE OF COMPLETE APPLICATION Subject: Foster Short Plat and SEPA/Environmental Review Applications L10-004 / E10-001 Dear Mr. Phan: Your applications for a nine -lot short plat and SEPA/Environmental Review for the property located at 4419 S 144th Street in Tukwila (parcel #s 0040000375 and 0040000380) are considered complete on February 3, 2010 for the purposes of meeting state mandated time requirements. This determination of complete application does not preclude the ability of the City to require that you submit additional plans or information, if in our estimation such information is necessary to ensure the project meets the substantive requirements of the City or to complete the review process. This notice of complete application applies only to the permits identified above. It is your responsibility to apply for and obtain all necessary permits issued by other agencies. Please arrange to have the public notice board for this project manufactured and installed on site within the next 14 days. The City of Tukwila will coordinate the public notice mailing with installation of the public notice board. Once the public notice board is installed, the public comment period for this project will be 14 days for both the short plat and SEPA Environmental Review applications. These notice periods will run concurrently. Please feel free to call me at (206) 431-3659 with any questions. Sincerely, J. ie Reavis Assistant Planner cc. L10-004, E10-001 JR Page 1 of 1 02/03/2010 H:\Short Plats\Foster Short Plat\L10-004 El 0-001 Complete Foster Short Plat.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 • Ai 1 JAN 2 7 201C CITY OF TUKWILA ?.RMMMtvium:Tr Department of Community DevelopmentVal P -F `i" '4T 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX (206) 431-3665 E-mail.: tukplanaci.tukwila.wa.us SHORT PLAT (P -SS) APPLICATION FOR STAFF USE ONLY Permits Plus Type: P -SS Planner: __.Jld inl i g gavi s File Number: L 10 - 0 01.1 Project File Number: -�E 09 - b J (p Application Complete (Date:2,4 ho 10) Application Incomplete (Date: ) Other File Numbers: R i 0 - U o NAME OF PROJECT/DEVELOPMENT: "—F.73-7---<. LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdiviision, access street, and nearest intersection. LOT 6 7 , t -c7 Com. 3 , i cr - 411 ; / Clr/1 /xx 9. iyya- s,—. LIST ALL TAX LOT NUMBER /this information may be found on your tax statement). 004000037S . o o4aoa35O DEVELOPMENT COORDINATOR : _ The individual who: • has decision making authority on behalf of the owner/applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City to whom all notices and reports will be sent. Name: -�1 � A-i.J � PE Address: 5/.30 S. / = / a (/C 5-6'7-041.-r- - Lc/4 ?eria Phone: 20 C 2dZq- 4/0 /a?a6-`/yc FAX E-mail:62. T1�EC0/�6C 4,0 - COA-4 J�" L Date: / o.C),/0 CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX (206)‘431-3665 E-mail.: tukplan(ii;ci.tukwila.wa.us 'JAN 2 :7 2010 COMMJpj Tf¢ DEVELQyi,'+118 SEPA- ENVIRONMENTAL REVIEW APPLICATION FOR STAFF USE ONLY Permits Plus TYPE P-SEPA File Number: ' , 0 — 0 0 Planner: ` -airm e z i.yll, Application Complete (Date: 2/3/1 0 ) Project File Number: p_R�0ct —Q ( p Application Incomplete (Date: ) Other File Numbers: LI p - OU Li, NAMEOF PROJECT/DEVELOPMENT: f Led:7 LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. L oT ,6 7 , /3i- ce 3 AID/WS t. tires r stc7-s /i/1f say. /44'xx s /d/y LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). d b `16009 37.5-v- C gfeva2 38'a DEVELOPMENT COORDINATOR : The individual who: • has decision making authority on behalf of the owner/applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City to whom all notices and reports will be sent. Name: �4A/ f3.741lJ Address: 57.30 S /h.6 6,4Ale 5 -EA -77I -C (,L4 T$f Phone: 406 -avg.x ftot '4/ /'?2 FAX: E-mail: A & 7 WECrvyCE,16h!,4. csvw Signature: Date: TICOR TITLE COMPANY 600 SW 39TH STREET, STE 100, RENTON, WA 98057 Unit No.: UNIT 1 Title Officer: Unit 1 Phone No.: (425)255-7575 SUBDIVISION GUARANTEE Guarantee No.: 6447560 Reference No.: TL Investment Group / TICOR TITLE COMPANY a corporation, herein called the Company, GUARANTEES TL Investment Group, LLC herein called the Assured, against actual Toss not exceeding the liability amount stated above which the Assured shall sustain by reason of any incorrectness in the assurances set forth in Schedule A. LIABILITY EXCLUSIONS AND LIMITATIONS 1. No guarantee is given nor liability assumed with respect to the identity of any party named or referred to in Schedule A or with respect to the validity, legal effect or priority of any matter shown therein. 2. The Company's liability hereunder shall be limited to the amount of actual loss sustained by the Assured because of reliance upon the assurance herein set forth, but in no event shall the Company's liability exceed the liability amount of set forth above. Dated: December 21, 2009 TICOR TITLE COMPANY By Ai L Authorized Signatur: Please note carefully the liability exclusions and limitations and the specific assurances afforded by this guarantee. If you wish additional liability, or assurances other than as contained herein, please contact the Company for further information as to the availability and cost. CLTA Guarantee Face Page (Rev. 6-8-71) JAN 2,7 2010 •.}MMUNiTir i,;E1tELORNtENT TICOR TITLE COMPANY SUBDIVISION GUARANTEE SCHEDULE A Guarantee No.: 6447560 Reference No.: TL Investment Group / Effective Date: Liability: $ 1,000.00 December 21, 2009 Premium: $ 325.00 Tax: $ 30.88 The assurances referred to on the face page are: That, according to those public records which, under the recording laws, impart constructive notice of matters relative to the following described real property: SEE ATTACHED LEGAL Title to said real property is vested in: Orva B. Morrison, as her separate estate subject to the matters shown below under Exceptions, which Exceptions are not necessarily shown in the order of their priority. EXCEPTIONS: 1. Taxes or assessments which are not shown as existing liens by the records of any taxing authority that levies taxes or assessments on real property or by the public records. 2. Unpatented mining claims; reservations or exceptions in the United States Patents or in Acts authorizing the issuance thereof; water rights, claims or title to water. 3. Title to any property beyond the lines of the real property expressly described herein, or title to streets, roads, avenues, lanes, ways or waterways on which such real property abuts, or the right to maintain therein vaults, tunnels, ramps, or any other structure or improvement; or any rights or easements therein unless such property, rights or easements are expressly and specifically set forth in said description. SPECIAL EXCEPTIONS FOLLOW ( • TICOR TITLE COMPANY SUBDIVISION GUARANTEE SCHEDULE A (Continued) Guarantee No.: 6447560 Reference No.: TL Investment Group / LEGAL DESCRIPTION LOTS 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 11 OF PLATS, PAGE(S) 31, IN KING COUNTY, WASHINGTON. TICOR TITLE COMPANY SUBDIVISION GUARANTEE SCHEDULE B Guarantee No.: 6447560 Reference No.: TL Investment Group / SPECIAL EXCEPTIONS 1. Delinquent general and special taxes and charges, payable February 15, delinquent if first half unpaid on May 1, second half delinquent if unpaid on November 1 of the tax year (amounts do not include interest and penalties): Year: 2009 Tax Account Number: 004000-0380-02 Levy Code: 2401 Assessed Value -Land: $214,000.00 Assessed Value -Improvements: $292,000.00 General and Special Taxes: Billed: $5,369.28 Paid: $2,684.64 Unpaid: $2,684.64 Affects: Lot 7 A contract of sale by and between the parties named below Dated: September 10, 2009 Vendor: Orva B. Morrison, an unmarried person Vendee: TL Investment Group, LLC, a Washington Limited Liability Company Recording Date: September 10, 2009 Recording No: 20090910000432 Excise Tax Receipt No.: 2407566 3. Any rights, interests, or claims which may exist or arise by reason of the following matters disclosed by survey, Recording Date: July 15, 1991 Recording No.: 9107159001 Matters shown: Chain link fence off east line of Lot 7. INFORMATIONAL NOTES: Note: Property taxes for the fiscal year shown below are PAID. For proration purposes the amounts were: Tax Identification No.: 004000-0375-09 Code Area Number: 2401 Fiscal Year: 2009 Amount: $2,277.86 Land: $214,000.00 Improvements: $0.00 Affects: Lot 6 TICOR TITLE COMPANY SUBDIVISION GUARANTEE SCHEDULE B (Continued) Guarantee No.: 6447560 Reference No.: TL Investment Group / Note: FOR INFORMATIONAL PURPOSES ONLY: The following may be used as an abbreviated legal description on the documents to be recorded, per Amended RCW 65.04.045. Said abbreviated legal description is not a substitute for a complete legal description within the body of the document: LOTS 6 AND 7, BLOCK 3, ADAMS HOME TRACTS END OF SCHEDULE B r C ATTENTION: This document has been prepared for both the Buyer and Seller involvccl 1 this Real Estate Transaction. Ticor Title Company (Member of the Fidelity National Financial, Inc. group of companies) Fidelity National Financial Group of Companies' Privacy Statement July 1, 2001 We recognize and respect the privacy expectations of today's consumers' and the requirements of applicable federal and state privacy laws. We believe that making you aware of how we use your non-public personal information ("Personal Information"), and to whom it is disclosed, will form the basis for a relationship of trust between us and the public that we serve. This Privacy Statement provides that explanation. We reserve the right to change this Privacy Statement from time to time consistent with applicable privacy laws. In the course of our business, we may collect Personal Information about you from the following sources: • From applications or other forms we receive from you or your authorized representative; • From your transactions with, or from the services being performed by us, our affiliates, or others; • From our internet web -sites; • From the public records maintained by government entities that we either obtain directly from those entities, or from our affiliates or others; and • From consumer or other reporting agencies. Our Policies Regarding the Protection of the Confidentiality and Security of Your Personal Information We maintain physical, electronic and procedural safeguards to protect your Personal Information from unauthorized access or intrusion. We limit access to the Personal Information only to those employees who need such access in connection with providing products or -services to you or for other legitimate business.purposes. Our Policies and Practices Regarding the Sharing of Your Personal Information We may share your Personal Information with our affiliates, such as insurance companies, agents, and other real estate settlement service providers. We also may disclose your Personal Information: • to agents, brokers or representatives to provide you with services you have requested; • to third -party contractors or service providers who provide services or perform marketing or other functions on our behalf; and • to others with whom we enter into joint marketing agreements for products or services that we believe you may find of interest. In addition, we will disclose your Personal Information when you direct or give us permission, when we are required by law to do so, or when we suspect fraudulent or criminal activities. We also may disclose your Personal Information when otherwise permitted by applicable privacy laws such as, for example, when disclosure is needed to enforce our rights arising out of any agreement, transaction or relationship with you. One of the important responsibilities of some of our affiliated companies is to record documents in the public domain. Such documents may contain your Personal Information. Right to Access Your Personal Information and Ability To Correct Errors Or Request Changes Or Deletion Certain states afford you the right to access your Personal Information and, under certain circumstances, to find out to whom your Personal Information has been disclosed. Also, certain states afford you the right to request correction, amendment or deletion of your Personal Information. We reserve the right, where permitted by law, to charge a reasonable fee to cover the costs incurred in responding to such requests. All requests must be made in writing to the following address: Privacy Compliance Officer Fidelity National Financial, Inc. 601 Riverside Avenue Jacksonville, FL 32204 Multiple Products or Services If we provide you with more than one financial product or service, you may receive more than one privacy notice from us. We apologize for any inconvenience this may cause you. R- ---S-144TH_ ST_ -25 39.74TU SP LOT 1 moo m. L94-0008 9408101415 ▪ LOT2 80115 j §p 0336 4 11 116.84 ,9. 072?77 „ii', 140074 TU SP 604° 40.6 °° 11 LOT 1 ▪ 93555 0338 0^,x:.: 1f14 • 95.98 2 LpT3 TUKWILA CITY LIMITS 0817 NO 150 ORD NO 1510 144TH_ _ _ - TU SP LOT 704°0 Com 846< . . 5 ,5 10802#8 LOTS 0344 91 -01 -SS A5 9108120873 cowo cus 1.42194 64a'T 1.4 0345 m L99-0044 ▪ LOT2once 009 'mm 0339 00002 676811 03 i 88 46 834449 18.95 18540#8 0472 20 70003 0471 18540#8 0471 52.00 Event x_65.... 9-20 ll.» LOT 4 0004 0341 2p°1�L 74 40 936 66.00 8.81 TU SP f 6.2 . • m e.6.. .. NM PARCEL O '15-, 0464 88485a ie°4 551 128. TU BLA 130 6040°0 0470 0470 LOT 9266.#8 0 9, 13 .NO L94-0 V a mC0.10 wR LOT1 8025#8 138.76 Q462 NO 91 -07 -SS 9110301320 " PARCELA 004 0460 1395756 120.76 KC SP 6 784002 1_ifsd V Ir "9 ®W 7 887^49117-114 LOT 1 12 0.077 802 8501170 22 22508#8 0361 68.879 0457. 9 LOT 2 4 38860#8 16344#E 036. 0365 tue 7.51.59"W 18 40119#e 0455 64. 64.415 TU SP L9R-0049 LOT 3 ,4 0443 10391#6 0443 64.40 04044422 r. LOT2 .. 10442 8 1ta r� 40119#a 0370 9304210451 LOT 1 .. 0441 08,24 601000 •.+ 1941 ' 26068#8 0.20 0746 9600#a 0446 44 475 7 40 0460 9600#e 0450 64 476 58915 88.60 16 mom ONO 13845#a 0440 88.70 6 118.94 40119#a 0375 004000 ADAMS 043° 23976#8 16 04301 16140#a 128195 0431 57000#e 9106 7 40119#e 0380 12900#e 0427 14 034000 8425 17321#8 0425 R 0426 114 406 110 9900#a a 128.95 10268#a 8 0382 9763#8 038 Lf 128.84 NB KC SP NC LOT 2 .070 820814053 3 108.79 NB LOT 9 8-25 38.80 00 8569# 48027 0705 100396 705 0106 10829#8 0708 809258 2 40106#a 0710 3 0916 71405e 081 mn 95200817 20 9520#e 0818 19 90.71 087-59-078 936 0 0 LOT 2 LOT 10 0 11351# 70°70 0803 0970 100802 mm 0 18 0 1 4 98.69 6 94.35 687-59-09E 128.69 o Pcl A o LOT 3 go 11311# 09 w 0804 50- 128.66 64.35 N 0 P▪ c]. B 64.36 0tl TU BLA NO L94 -010E DOOM PARCEL 17536#e 0726 108,74 9412210740 PARCEL e 102801#8 0715 " 128.71 0726 7470# 3 0729 64.40 0730 0765 .000 0003 0 $lot2 n S n8 R133366 80 0800 A J y CL Lot 1 w N 00 o Lot 2 0 0 N 07 0 034000 N 6791 484000 0700 84.39 LOT 1 8524# $ 0/32 S 84;38 801 0LOT 2, O N 8520# s 731 64 7 0�z LO't3 92084 0733 84.36 14835#e 0786 15 7 21770#8 64 9307141738 LOT IMMO 704°70 0741 1x053#0 0738 0736 8 6523#8 0739 0737 .37 004000 4.1 100175678 _64.36 20 LOT B 084448 0704 7267#8 0736 13 ° TU BLA 192.60 1.94-0094 04ono °�9�� Lot B LOT AO -O 411986 0780 100.34 file:///CI/09082.txt Page 1 • P57 r 'f-TvEn JAN 2 PROJECT: 09082 2010 Figure Name: LOT 1 Course: S 87-49-10 E Course: S 01-10-02 W Course: N 88-49-58 W Course: S 25-20-49 W Course: N 87-51-43 W Arc Length: 31.07 Course: N 01-08-52 E Perimeter: 581.96 Area: 17452.82 Distance: 129.37 Distance: 59.93 Distance: 25.00 Distance: 139.88 Distance: 27.34 Radius: 20.00 Delta: 89-00-35 Distance: 169.37 0.40 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.002 Course: N 04-44-51 W Precision 1: 289274.30 Figure Name: LOT 2 Course: S 01-10-02 W Course: N 87-51-43 W Course: N 25-20-49 E Course: S 88-49-58 E Perimeter: 376.18 Distance: 129.00 Distance: 82.30 Distance: 139.88 Distance: 25.00 Area: 6902.77 0.16 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.007 Course: S 73-48-23 W Precision 1: 53671.74 Figure Name: LOT. 3 Course: S 01-10-02 W Course: N 87-51-43 W Course: N 01-08-52 E Course: S 87-51-43 E Distance: 122.00 Distance: 62.26 Distance: 122.00 Distance: 62.30 Perimeter: 368.56 Area: 7597.24 0.17 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.002 Course: N 65-14-42 E Precision 1: 235286.72 file:///CI709082.1xt (1 of 4)1/19/2010 1:23:03 AM e41, w o';:1��7141':i r 011 file:///C1/09082.txt Figure Name: LOT 4 Course: S 01-08-52 W Course: N 87-51-43 W Course: N 01-08-52 E Course: S 87-51-43 E Perimeter: 336.00 Distance: 102.00 Distance: 66.00 Distance: 102.00 Distance: 66.00 Area: 6730.99 0.15 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.000 Course: S 90-00-00 E Precision 1: 336000000.00 Figure Name: LOT 5 Course: S 01-08-52 W Course: N 87-51-43 W Course: N 01-08-52 E Course: S 87-51-43 E Perimeter: 333.00 Distance: 102.00 Distance: 64.50 Distance: 102.00 Distance: 64.50 Area: 6578.03 0.15 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.000 Course: S 90-00-00 E Precision 1: 333000000.00 Figure Name: LOT 6 Course: S 01-08-52 W Course: N 87-51-43 W Course: N 01-08-52 E Course: S 87-51-43 E Perimeter: 334.00 Distance: 102.00 Distance: 65.00 Distance: 102.00 Distance: 65.00 Area: 6629.03 0.15 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.000 Course: S 90-00-00 E Precision 1: 334000000.00 file:///Cl/09082.txt (2 of 4)1/19/2010 1:23:03 AM file:///CI/09082.txt Figure Name: LOT 7 Course: S 87-49-10 E Course: S 01-08-52 W Arc Length: 31.76 Course: N 87-51-43 W Course: S 01-08-52 W Course: N 87-51-43 W Course: N 01-08-52 E Perimeter: 352.23 Distance: 103.50 Distance: 36.70 Radius: 20.00 Delta: 90-59-25 Distance: 44.14 Distance: 20.00 Distance: 39.00 Distance: 77.13 Area: 6597.85 0.15 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.011 Course: S 67-31-57 W Precision 1: 32439.28 Figure Name: LOT 8 Course: S 87-49-10 E Course: S 01-08-52 W Course: N 87-49-10 W Course: N 01-08-52 E Perimeter: 335.00 Distance: 103.50 Distance: 64.00 Distance: 103.50 Distance: 64.00 Area: 6622.68 0.15 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.000 Course: S 90-00-00 E Precision 1: 335000000.00 Figure Name: LOT 9 Course: S 87-49-10 E Course: S 01-08-52 W Course: N 87-49-10 W Course: N 01-08-52 E Distance: 103.50 Distance: 68.00 Distance: 103.50 Distance: 68.00 Perimeter: 343.00 Area: 7036.55 0.16 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.000 Course: S 90-00-00 E Precision 1: 343000000.00 file:///CI/09082.txt (3 of 4)1/19/2010 1:23:03 AM rnIueuroISIII1I& cI/i, 9ry. vs ,44 44, . R e 4 0 file:///Cl/09082.txt Figure Name: TRACT A Course: S 87-49-10 Course: S 01-08-52 Arc Length: 31.07 Course: S 87-51-43 Course: S 01-08-52 Course: N 87-51-43 Course: N 01-08-52 Course: S 87-51-43 Arc Length: 31.76. Course: N 01-08-52 Perimeter: 713.88 E Distance: 25.00 W Distance: 169.37 Radius: 20.00 Delta: -89-00-35 E Distance: 47.34 W Distance: 20.00 W Distance: 156.50 E Distance: 20.00 E Distance: 44.14 Radius: 20.00 Delta: -90-59-25 E Distance: 168.70 Area: 8027.70 0.18 acres Mapcheck Closure - (Uses listed courses & COGO Units) Error of Closure: 0.015 Course: S 76-36-27 E Precision 1: 48615.78 file:///CI/09082.txt (4 of 4)1/19/2010 1:23:03 AM • • CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX (206) 431-3665 E-mail: tukplan a,;ci.tukwila.wa.us AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS PERMISSION TO ENTER PROPERTY STATE OF WASHINGTON ►JAN 21 2010 COMMUN: I i' DEVELOPkiE ,lT ss COUNTY OF KING The undersigned being duly sworn and upon oath states as follows: 1. I am the current owner of the property which is the subject of this application. 2. All statements contained in the applications have been prepared by me or my agents and are true and correct to the best of my knowledge. 3. The application is being submitted with my knowledge and consent. 4. Owner grants the City, its employees, agents,.engineer), contractors or other representatives the right to enter upon Owner's real property, located at 4-4) /9/ 4I 1 XX S /yam/ for the purpose of application review, for the limited time necessary to complete that purpose. 5. Owner agrees to hold the City harmless for any loss or damage to persons or property occurring on the private property during the City 's entry upon the property , unl ess the loss or damage is the result of the sole negligence of the City. 6. Non -responsiveness to a City information request fo r ninety (90) or more day s, shall be cause to cancel the application(s) without//refund of fees. / � EXECUTED at '11A k_W! (a. (city), I/ /01(state) on la -ti 7. 20 / 0 Print Name Address Phone Number Signature L/15. ' S. l' r Sr nrP-0 64, wa f8/pct' rP DW 7jg-.(0 16 /% `du' On this day personally appeared before me VIM/k ' ` /1 to me known to be the individual who executed the foregoing instrument and acknowledged that he/she signed the sam e as his/her voluntary act and deed for the uses and purposes mentioned therein. SUBSCRIBED AND SWORN TO BEFORE ME ON IS 1 DAY OF 20 ` D illidelialillihidhillibililvidhifogisidlandbidilil .NOTARY PUBLIC in and for the State i f Washington .Notcp ftiblk: i Wept WaiM hsidin at 11 g "TutC..e�oitof DAMAIN Ml1MIKAS R My Appotnlm.nt Expires Sip 24,20115.,' ; P Commission expires on Q 2 I�" I Z� CITY OF TUKWILA Community Development Department Permit Center 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 E" VF JAN 2 7 201 CQMAINiTt 3LOi=I1+;'E► T Permit Center/Building Division: 206-431-3670 Public Works Department: 206-433-0179 Planning Division: 206-431-3670 CERTIFICATE OF WATER AVAILABILITY Required only if outside City of Tukwila water district PERMIT NO.: Part;A:. Tobe completedScapplicant ; Site address (attach map and legal de9cription showing hydrant location and size of main): 9 — S /1/171 S3 = TylO/Q.4 Gam- Owner Information: `, Agent/.Conta`Ct Person , .. • Name: %L ;,<,,- 64,00„, G LG Name: ./44.4) f rie-/ 77F Address:it/os-s-, S !1/d.�� Si �IILH > Address: 57z0 r. /b4 C 44�v 5. r 4 Phone: ZcS.� 2.14,s-..... ,s---..7s-s-- Phone:206,2.29-6yZZ 9� This certificate is for the purposes of: ❑ Residential Building Permit ❑ Preliminary Plat ❑ Commercial/Industrial Building Permit ❑ Rezone c//_zest. - 41, ' 474 Short Subdivision ❑ Other Estimated number of service connections and water meter size(s): C6/VA,294,1" - Vehicular distance from nearest hydrant to the .�,AlFe it 5Itu I ft I,s.i>,kriV ILE ft. Area is served by (Water Utility District): r1 C(1 LJ I liI(; i Owner/Agent Signature Date /Z/c 7709 ed • PartB: To be.complatad Bywater utility;district';;,, 1. The proposed project is within 2. ❑ No improvements required. Vry (u / fr i ter-. (City/County) 3. The improvements required to upgrade the water system to bring it into compliance with the utilities' comprehensive plan or to meet the minimum flow requirements of the project before connection and to meet the State cross connection control requirements: p c v '- D Pk-A.5t- �t -rte .0 s c' r J w; rH- L) i47 -E/2 D c STA/CT *61 2-6 w'i 1t be. ;.re u reel ��r +-ki s ere) e crt (Use separate sheet if more room is needed) 4. Based upon the improvements listed above, water can be provided and will be available at the site with a flow of 3000 gpm at 20 psi residual for a duration of 2 hours at a velocity of / 0 fps as documented by the attached calculations. 5. Water availability: Acceptable service can be provided to this project Acceptable service cannot be provided to this project unless the improvements in Item B-2 are met. System is not capable of providing service to this project. I hereby certify that the above information is true and correct. K ? cc.) r., Cr, Z&,z-4.6 0, TEI2 AST, at - /2 -5 Agency/Phone 2.>-'Z / -`15g7 By / Z-7-09 Date k-nP (i2-7-49) This certificate is not valid without Water District #125's attachment entitled "Attachment to Certificate of Water Availablity" \applications\water availability (7-2003)' Printed: 9-16-03 Attachment to Certificate of Water Availability King County Water District No. 125 The following terms and conditions apply to the attached Certificate of Availability ("Certificate") 1. This Certificate of Water Availability is valid only for the real property referenced herein for the sole purpose of submission to the City of Tukwila ("City"). This Certificate is issued at the request of the City and is not assignable or transferable to any other party. Further, no third person or party shall have any rights hereunder whether by agency or as a third party beneficiary or otherwise. 2. The District makes no representations, expressed or implied, the applicant will be able to obtain the necessary.permits, approvals and authorization from the City or any other applicable land use jurisdiction or govemmental agency necessary before applicant can utilize the utility service which is the subject of this Certificate. 3. As of the date of the issuance of this Certificate, the District has water available to provide utility service to the real property which is the subject of this Certificate, and the utility systems exist or may be extended by the applicant to provide service to such property. However, the issuance of this Certificate creates no contractual relationship between the District and the applicant or the City, and the issuance of this Certificate may not be relied upon and does not constitute the District's guarantee that water utility service will be r available to the real property at the time the applicant may apply to the District for such service. 4. Application for and the possible provision of District utility service to the real property which is the subject of this Certificate shall be subject to and conditioned upon the availability of water service to the real property at the time of such application, as well as all application for utility service, including conservation, water restrictions, and other policies and regulation then in effect. Applicant's Signature /06 Date /z//o 7/0 9 District Representative %2154 _ �,�, , � Date /2 -7- O i • 14816 Military Roaclith P.O. Box 69550 Tukwila, WA 98168 Phone: (206) 242-3236 Fax: (206) 242-1527 CERTIFICATE OF SEWER AVAILABILITY/NON-AVAILABILITY Residential: $50 Commercial: $100 Certificate of Sewer Availability OR ❑ Certificate of Sewer Non -Availability Part A: (To Be Completed by Applicant) Purpose of Certificate: ❑ Building Permit ❑ Preliminary Plat or PUD ❑ Other Short Subdivision ❑ Rezone Pro osed Use: .: Residential Single Family ❑ Residential Multi -Family ❑ Commercial ❑ Other Applicants Name: �f lNi P-/ *1•rf•%i 1� Phone:ZO6 — 09.‘91,—..6'/O2 Property Address or Approximate L tion: Tax Lot Number: / Asti,- S. /yy— Sr ooy006037r76o 96060 3 Legal Descripti (Attach Map and Legal Description if necessary): to r6 GOT 7, 8Z -0C -K 3 -S / J Armes litylf 7 r Part B: (To Be Completed by Sewer Agency) 1. ❑ a. Sewer Service will be provided by side sewer connection only to an existing size sewer feet from the site and the sewer system has the capacity to serve the proposed use. OR j1 b. Sewer service will require an improvement to the sewer system of: ❑ (1) feet of sewer trunk or lateral to reach the site; and/or ❑ (2) the construction of a collection system1on the site; and/or • s'c_fbelf coet',left mh .Pf q 51 (3) other(describe): Ja {p DGirt-40x4, CXfGKs/CH 2. (Must be completed if 1.b above is checked) Pi a. The sewer system improvement is in conformance with a County approved sewer comprehensive plan, OR ❑ b. The sewer system improvement will require a sewer comprehensive plan amendment. 3. a. The proposed project is within the corporate limits of the District, or has been granted Boundary Review Board approval for extension of service outside the District, OR ❑ b. Annexation or BRB approval will be necessary to provide service. 4. Service is subject to the following: PERMIT: $ a. District Connection Charges due prior to connection: GFC: $ SFC: $ UNIT: $ TOTAL: $ (Subject to Change on January 1st) A King County/METRO Capacity Charge will be billed directly by King County after connection to the sewer system. b. Easements: ❑ Required Nr May beiRequired c. Other: C1147 Lr +0 h C- cl er i G- 14-‘4 i1 ed k y0 O ye CO 44^4C-1PToy I hereby certify that the above sewer agency information is true. This certification shall be valid for one year the date of sigture By 1 -1Q, -,Q, Title /Z/2.91,2, Date d Cr (JAN 21 2010 COty tp , DEVELUJ ATTACHMENT TO VAL VUE SEWER DISTRICT CERTIFICATE OF SEWER AVAILABILITY/NON-AVAILABILITY The following terms and conditions apply to the attached Val Vue Sewer District ("District") Certificate of Sewer Availability/Non-Availability ("Certificate"). 1. This Certificate is valid only for the real property referenced herein ("Property"), which is in the District's service area, for the sole purpose of submission to the King County Department of Development and Environmental Services, King County Department of Public Health, City of Seattle, City of Tukwila, City of Burien and/or City of SeaTac. This Certificate is between the District and the applicant only, and no third person or party shall have any rights hereunder whether by agency, third -party beneficiary principles or otherwise. 2. This Certificate creates no contractual relationship between the District and the applicant and its successors and assigns, and does not constitute and may not be relied upon as the District's guarantee that sewer service will be available at the time the applicant may apply to the District for such service. 3. As of the date of the District's signature on this Certificate, the District represents that sewer service is available to the Property through sewer systems that exist or that may be extended by the applicant. The District makes no other representations, express or implied, including without limitation that the applicant will be able to obtain the necessary permits, approvals and authorizations from King County, City of Seattle, City of Tukwila, City of Burien, City of SeaTac or any other governmental agency before the applicant can utilize the sewer service which is the subject of this Certificate. 4. If the District or the applicant must extend the District's sewer system to provide sewer service to the Property, the District or applicant may be required to obtain from the appropriate govemmental agency the necessary permits, approvals and authorizations. In addition, the governmental agency may establish requirements that must be satisfied as a condition of granting any such permits, approvals or authorizations, which may make impractical or impossible the provision of sewer services to the Property. 5. Application for and possible provision of sewer service to the Property shall be subject to and conditioned upon availability of sewer service to the Property at the time of such application, and compliance with federal, state, local and District laws, ordinances, policies, and/or regulations in effect at the time of such application. I acknowledge that I have received the Certificate of SewerAvailability/Non-Availability and this Attachment, and fu y nderstand is and conditions herein. Applicant's Signature Date /A/oc/0 7 • s. I JAN 27.2010 COMMUNiT( DEVELOPMENT City of Tukwila Endangered Species Act Screening Checklist Date: '/020// o Applicant Name: 7Z- N Street Address: yD.CS- S_ /4/8 72 City, State, Zip: virb// L-,4 q.5-7.6� Telephone: 1-0-6 5-775-5- Directions -755 Directions This Screening Checklist has been designed to evaluate the potential for your project to result in potential "take" of Chinook salmon, Coho salmon, or Cutthroat trout as defined by Section 9 of the Endangered Species Act. The checklist includes a series of "Yes" or "No" questions about your project, organized into four parts. Starting with Part A on Page 1, read each question carefully, circle "Yes" or "No," and proceed to the next question as directed by the checklist. To answer these questions, you may need to refer to site plans, grading and drainage plans, critical areas studies, or other documents you have prepared for your project. The City will evaluate your responses to determine if "take" is indicated. Part A: Please review and answer each question carefully. Consider all phases of your project including, but not limited to, construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 1-0 Will the project require any form of grading? Grading is defined as any excavating, filling, clearing, or creation of impervious surface, or any combination thereof, which alters the existing ground surface of the earth (TMC 18.06.370). Please circle appropriate response. NO - Continue to Question 2-0 - Continue to Question 1-1 (Page 3) 2-0 Will the project require any form of clearing? Clearing means the removal or causing to be removed, through either direct or indirect actions, any vegetation from a site (18.06.145). Please circle appropriate response. NO - Continue to Question 3-0 ®Continue to Question 2-1 (Page 4) 3-0 Will the project require work, during any time of the project, below the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers or in wetlands? Ordinary high water mark is the mark that is found by examining the bed and banks of a stream and ascertaining where the presence and action of waters are so common and usual as to distinctly mark the soil from that of the abutting upland, in respect to vegetation (see TMC Chapter 18.06, Page 18-15). Please circle appropriate response. O - ' ontinue to Question 4-0 YES - Continue to Question 3-1 (Page 5) 4-0 Will the project result in the processing or handling, storage, or treatment of hazardous substances? This does not include the proper use of fuel stored in a vehicle's fuel tank. Hazardous substances are any liquid, solid, gas, or sludge, including any material, substance, product, commodity, or waste, regardless of quantity, that exhibits the characteristics or criteria of hazardous waste as defined by Washington Administrative Code 173-303 (TMC 18.06.385). This includes fuel or other chemicals stored on-site during construction. Please circle appropriate response. O - ' ontinue to Question 5-0 YES - Continue to Question 5-0 5-0 Will the project result in the withdrawal, injection, or interception of groundwater? Examples of projects that may affect groundwater include, but are not limited to: construction of a new well, change in water withdrawals from an existing well, projects involving prolonged construction dewatering, projects installing French drains or interceptor trenches, and sewer lines. For the purpose of this analysis, projects that require a geotechnical report pursuant to the requirements of TMC 18.45.060 or would require a.geotechnical report if not exempt should answer Yes. Please circle appropriate response. O - •ntinue to Question 6-0 YES - Continue to Question 6-0 City of Tukwila ESA Screening Checklist Part A (continued) 6-0 Will the project involve landscaping or re -occurring outdoor maintenance that includes the regular use of fertilizers, pesticides, or herbicides? This does not include the one-time use of transplant fertilizers. Landscaping means natural vegetation such as trees, shrubs, groundcover, and other landscape materials arranged in a manner to produce an aesthetic effect appropriate for the use of the land (TMC 18.06.490). For the purpose of this analysis, this includes the estaa .shment of new lawn or grass. Please circle appropriate response. ecklist Complete YES — Checklist Complete Part B: Please answer each question below for projects that include grading. Review each question carefully, considering all phases of your project including, but not limited to construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 1-1 Will the project involve the modification of a watercourse bank or bank of the Green/Duwamish or Black Rivers between the ordinary high water mark and top of bank? This includes any projects that will require grading on any slope leading to a river or stream, but will not require work below the ordinary high water mark. Work below the ordinary high water mark is covered in Part C. Please circle appropriate response. (Continue to Question 1-2 YES - Continue to Question 1-2 1-2 Could the construction, operation, or maintenance of the project result in sediment transport off site or increased rates of erosion and/or sedimentation in watercourses, the Green/Duwamish rivers, or the Black River? Most projects that involve grading have the potential to result in increased erosion and/or sedimentation as a result of disturbances to the soil or earth. If your project involves grading and you have not prepared a Temporary Erosion and Sedimentation Control Plan specifically designed to retain 100 percent of the runoff (including during construction) from impervious surface or disturbed soils, answer Yes to this question. If your project is normally exempt under the Tukwila Municipal Code and would not require the preparation of a Temporary Erosion and Sedimentation Control Plan, BUT may still result in erosion or sediment transport off site or beyond the work area, answer Yes to this question. Please circle appropriate response. Cga>ontinue to Question 1-3 YES - Continue to Question 1-3 1-3 Will the project result in the construction of new impervious surfaces? Impervious surfaces include those hard surfaces which prevent or restrict the entry of water into the soil in the manner that such water entered the soils under natural conditions prior to development; or a hard surface area that causes water to run off the surface in greater quantity or at an increased rate of flow from the flow presented under natural conditions prior to development. Such areas include, but are not limited to, rooftops, asphalt or concrete paving, compacted surfaces, or other surfaces that similarly affect the natural infiltration or runoff patterns existing prior to development (TMC 18.06.445). Please circle appropriate response. NO - Continue�to Question 2-0 (Page 2) 1_ .S.Dontinue to Question 1-4 City of Tukwila ESA Screening Checklist Part B (continued) 1-4 Will your project generate stormwater from the creation of impervious surfaces that will not be infiltrated on site? For the purpose of this analysis, infiltration includes the use of a stormwater treatment and management system intended to contain all stormwater on site by allowing it to seep into pervious surface or through other means to be introduced into the ground. If your project involves the construction of impervious surface and does not include the design of a stormwater management system specifically designed to infiltrate stormwater, answer Yes to this question. Please circle appropriate response. NO - ontinue to Question 2-0 (Page 2) YES - Continue to Question 2-0 (Page 2) Part C: Please review each question below for projects that include clearing. Review each question carefully, considering all phases of your project including, but not limited to construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 2-1 Will the project involve clearing within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. 41251* ontinue to Question 3-0 (Page 2) YES - Continue to Question 2-2 2-2 Will the project involve clearing of any trees within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? A tree is defined by TMC 18.06.845 as any self-supporting woody plant, characterized by one main trunk, with a potential diameter - breast -height of 2 inches or more and potential minimum height of 10 feet. Please circle appropriate response. NO - Continue to Question 2-3 YES - Continue to Question 2-3 2-3 Will the project involve clearing of any evergreen trees from within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis evergreen means any tree that does not regularly lose all its leaves or needles in the fall. Please circle appropriate response. NO - Continue to Question 2-4 YES - Continue to Question 2-4 2-4 Will the project involve clearing within 100 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3-0 (Page 1) YES - Continue to Question 2-5 2-5 Will the project involve clearing within 40 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3-0 (Page 2) YES - Continue to Question 3-0 (Page 2) City of Tukwila ESA Screening Checklist Part D: Please review each question below for projects that include work below the ordinary high water mark of watercourses or the Duwamish/Green or Black Rivers or in wetlands. Review each question carefully, considering all phases of your project including, but not limited to, construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answer. 3-1 Will the project involve the direct alteration of the channel or bed of a watercourse, the Green/Duwamish rivers, or Black River? For the purpose of this analysis, channel means the area between the ordinary high water mark of both banks of a stream, and bed means the stream bottom substrates, typically within the normal wetted -width of a stream. This includes both temporary and permanent modifications. Please circle appropriate response. NO - Continue to Question 3-2 YES - Continue to Question 3-2 3-2 Will the project involve any physical alteration to a watercourse or wetland connected to the Green/Duwamish River? For the purpose of this analysis, "connected to the river means" flowing into via a surface connection or culvert, or having other physical characteristics that allow for access by salmonids. This includes impacts to areas such as sloughs, side channels, remnant oxbows, ditches formed from channelized portions of natural watercourses or any area that may provide off channel rearing habitat for juvenile fish from the Duwamish River. This includes both temporary construction alterations and permanent modifications. Watercourses or wetlands draining to the Green/Duwamish River that have a hanging culvert, culvert with a flap gate, diversion, or any entirely man-made or artificial structure that precludes fish access should answer Yes to this question. Please circle appropriate response. NO - Continue to Question 3-3 YES - Continue to Question 3-3 3-3 Will the project result in the construction of a new structure or hydraulic condition that could be a barrier to salmonid passage within the watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, a barrier means any artificial or human modified structure or hydraulic condition that inhibits the natural upstream or downstream movement of salmonids, including both juveniles and adults. Please circle appropriate response. NO - Continue to Question 3-4 YES - Continue to Question 3-4 3-4 Will the project involve a temporary or permanent change in the cross-sectional area of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, the cross-sectional area is defined as a profile taken from the ordinary high water mark on the right bank to the ordinary high water mark on the left bank. Please circle appropriate response. NO - Continue to Question 3-5 YES - Continue to Question 3-5 3-5 Will the project require the removal of debris from within the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, debris includes, but is not limited to fallen trees, logs, shrubs, rocks, piles, rip -rap, submerged metal, and broken concrete or other building materials. Projects that would require debris removal from a watercourse or the Green/Duwamish or Black Rivers as part of a maintenance activity should answer Yes to this question. Please circle appropriate response. • City of Tukwila ESA Screening Checklist NO - Continue to Question 3-6 YES - Continue to Question 3-6 3-6 Will the project result in impacts to watercourses or wetlands that have a surface connection to another watercourse or the Green/Duwamish or Black Rivers but do not contain habitat conditions that support salmonid use? Such areas may include, but not be limited to hillside seeps and wetlands isolated from the watercourse or river that have a surface water connection to the watercourse or river but are not assessable, nor would be assessable to salmonids under natural conditions. Wetlands with a "functions and values" rating for baseflow/groundwater support of 9 and above (or moderate) as described in Cooke (1996) should be included. Please circle appropriate response. NO - Continue to Question 3-7 YES - Continue to Question 3-7 3-7 Will the project include the construction of artificial waterways or wetlands connected to a watercourse containing salmonids? For the purpose of this analysis, the construction of artificial waterways or wetlands includes wetlands, channels, sloughs, or other habitat feature created to enhance wildlife use, particularly waterfowl use, or may be attractive to wildlife, particularly waterfowl. Please circle appropriate response. NO - Continue to Question 3-8 YES - Continue to Question 3-8 3-8 Will the project include bank stabilization? For the purpose of this analysis, bank stabilization includes, but is not limited to, rip -rap, rock, log, soil, or vegetated revetments, concrete structures, or similar structures. Please circle appropriate response. NO - Continue to Question 4-0 (Page 2) YES - Continue to Question 4-0 (Page 2) STATE ENVIRONMENTAL CHECKLIST Please respond to all questions. Use separate sheets as necessary. Applicant Responses: A. BACKGROUND 1. Name of Proposed Project: Foster Short Plat RECFNFO JAN 27:2010 COMMUNITY DEVELOPMENT 2. Applicant: TL Investment Group, LLC; 4055 S. 148th Street: Tukwila, WA 98168 3. Date checklist prepared: January 15, 2010 4. Agency requesting checklist: City of Tukwila 5. Proposed timing or schedule (including phasing, if applicable): Construction for this proposed residential development is estimated to start spring/summer of 2010 with completion around December 2011 or early 2012. 6. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No. 7. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. None known at the time of this application. 8. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. None known at the time of this application. 9. List any government approvals or permits that will be needed for your proposal. City of Tukwila Preliminary Short Plat City of Tukwila Final Short Plat City of Tukwila Grading (Site Development) Permit 10. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. There is currently one (1) single family residence on the property. The project proposes to short plat the existing two (2) parcels into nine (9) single family residential Tots. Proposed improvements include the demolition of the existing detached garage and the construction of eight (8) new single-family structures, Agency Comments • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments a private access road, associated utilities and stormwater management facilities. 11. Location of proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, and section, township and range. If a proposal would occur over a range of area, provide the range or boundaries of the sites(s). Provide a legal description, site plan, vicinity map and topographic map. While you should submit any plans required by the agency, you are not required to • duplicate maps or detailed plans submitted with any permit application related to this checklist. The property is located at 4419 and 44xx South 144th Street in the City of Tukwila, Washington. Sec. 22, T.23N, R.4E of W.M. 12. Does the proposal lie within an area designated on the City's Comprehensive Land Use Policy Plan Map as environmentally sensitive? No. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (article one): flat, rolling, hilly, steep slopes, mountainous, other: Elevations on the site vary from a high point of 309 feet at the southeastern property line to 286 feet at the northwestern property line, with grades varying from 4.0% to 14.0%. b. What is the steepest slope on the site (approximate percent slope)? 14% c. What general types of soils are found on the site (for example; clay, sand, gravel, peat„ muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. The United States Department of Agriculture Natural Resource Conservation Service (NRCS), did not map soils information in the project vicinity because it is an urban area. A soils study was performed by TJ Engineering Consultants, Inc. Site soils were classified as silty sand, Unified Soil Classification System (USCS) designation SM. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. To the best of our knowledge, there are no known surface indications or history of unstable soils in the immediate vicinity. There are no known history of landslides in the immediate vicinity of the site. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. It is estimated that there will be 975 cubic of cut, 185 cubic yards of fill, with a net of 790 cubic yards of export. Foster Short Plat Page 2 of 11 Environmental Checklist Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments f. Could erosion occur because of clearing, construction, or use? If so, generally describe. Depending on the weather conditions during construction, erosion may occur; however, all erosion measures as outlined in the Technical Information Report and Erosion and Sediment Control (ESC) Plans for this project will be implemented to minimize erosion. g. What percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 45% of the site will be impervious surface. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: The development project proposes to utilize silt fences, sediment traps, inlet protection, stabilized construction entrances, interceptor swales and check dams to mitigate impacts of erosion during construction. ESC measures as recommended in the 1998 KCSWM will be utilized as described in the Technical Information Report prepared for this project. 2. AIR a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, and industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. Dust and vehicle emissions will occur during construction. Vehicle emissions will occur after construction from resident vehicles. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. None known. c. Proposed measures to reduce or control emissions or other impacts to air, if any: During construction, the site will be sprinkled with water as necessary to control dust. There are no proposed measures for the control of vehicle emissions. 3. WATER a. Surface: 1. Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, salt water, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state the stream or river into which it flows. None known. Foster Short Plat Page 3 of 11 Environmental Checklist Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 2. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans for this work. No. 3. Estimate the amount of fill and dredge material that would be placed in, or removed from, surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material and/or the disposal site. N/A 4. Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No. 5. Does the proposal lie within a 100 -year floodplain? If so, note floodplain location on the site plan. No. 6. Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No. b. Ground: 1. Will groundwater be withdrawn, or will water be discharged to groundwater? Give general description, purpose, and approximate quantities of withdrawals or discharges, if known. Groundwater is NOT proposed to be withdrawn. Surface water will continue to infiltrate to native soils with overflow sheet flowing to its natural location of discharge along South 144th Street. 2. Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. This development will be served by the public sewer system. No waste material is anticipated to be discharged other than stormwater. c. Water Runoff (including storm water): 1. Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Foster Short Plat Page 4 of 11 Environmental Checklist • • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments Where will this water flow? Will this water flow into other waters? If so, describe. During heavy rainfall events, stormwater from the roofs will infiltrate to native soils with overflow runoff sheet flowing in a northerly direction toward South 144th Street. Stormwater runoff from the private road is collected and detained in an underground tank prior to discharging to the public stormwater system located along South 144th Street. 2. Could waste materials enter ground or surface waters? If so, generally describe. It is not anticipated that waste materials would enter the ground or surface waters. However, construction of the site may include soil stabilization processes which may generate waste materials. Erosion control measures per the TESC Plans prepared for this project will be implemented to minimize release of waste materials to the surface and/or ground water. 3. Proposed measures to reduce or control surface water, groundwater, and runoff impacts, if any: The development project proposes to utilize silt fences, inlet protection, and stabilized construction entrances to mitigate impacts of erosion during construction. 4. PLANTS a. Check types of vegetation found on the site and list specific species: xxx deciduous tree: alder, maple, aspen; other: xxx evergreen tree: fir, cedar, pine; other: xxx shrubs xxx grass xxx pasture crop or grain wet soil plants: cattail, buttercup, bulrush, skunk cabbage; other: water plants: water lily, eelgrass, milfoil; other: other types of vegetation: b. What kind and amount of vegetation will be removed or altered? Current vegetation consists of deciduous and evergreen trees along with low ground cover such as grass, weeds, and scrubs. These vegetation may be removed and/or altered for the development. c. List threatened or endangered plant species known to be on or near the site. There are no known threatened or endangered plant species on or adjacent to the property. Foster Short Plat Page 5 of 11 Environmental Checklist ' Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Proposed landscaping will include residential ground cover such as grass and low -covering shrubs. 5. ANIMALS a. Circle any birds or animals that have been observed on or near the site, or that are known to be on or near the site: Birds: hawk, heron, eagle, songbirds; other: common birds Mammals: deer, bear, elk, beaver; other: Fish: bass, salmon, trout, herring, shellfish; other: Other: b. List any threatened or endangered animal species known to be on or near the site. There are no known threatened or endangered animal species on or adjacent to the property. c. Is the site part of a migration route? If so, explain. None known. d. Proposed measures to preserve or enhance wildlife, if any: N/A 6. ENERGY AND NATURAL RESOURCES a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Electric and/or natural gas will be used for heating and lighting needs as typical for the residential developments. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: The project will utilize energy efficient mechanical systems and will comply with the current adopted building code of the City of Tukwila. 7. ENVIRONMENTAL HEALTH a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire, explosion, spill, or hazardous waste, which could occur because of this proposal? If so, describe. Foster Short Plat Page 6 of 11 Environmental Checklist • Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments This project will meet all applicable health and safety standards of the City of Tukwila. 1. Describe special emergency services that might be required (for example, chemical spills or explosions). Fire, ambulatory, police, as typically associated with residential developments. 2. Proposed measures to reduce or control environmental health hazards, if any: N/A. b. Noise 1. What types of noise exist in the area, which may affect your project (for example: traffic, construction, or production equipment)? None. 2. What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, or production equipment)? Indicate the hours that noise would be generated by the site. Short term noise levels will be associated with construction activities. Long term noise levels will be consistent with surrounding noise associated with residential developments. Hours that noise would be generated by the site will be in accordance with City of Tukwila noise ordinances. 3. Proposed measures to reduce or control noise impacts, if any: None. 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? Site: residential North: school/swimming pool/community center South: residential East: residential West: residential b. Has the site been used for agriculture? If so, describe. Not to our knowledge. c. Describe any structures on the site. There is currently a single family house on the property. d. Will any structures be demolished? If so, what? Yes. The detached garage and shed will be demolished. e. What is the current zoning classification of the site? Foster Short Plat Page 7 of 11 Environmental Checklist Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments LDR f. What is the comprehensive plan designation of the site? Residential g. If applicable, what is the current shoreline master program designation of the site? N/A h. Has any part of the site been classified an "environmentally sensitive" area? If so, please specify. Not to our knowledge. i. Approximately how many people would reside or work in the completed project? The proposed development will consist of nine (9) total single-family residential units. The number of people who will reside in these homes will be typical of similar developments. Approximately how many people would the completed project displace? The existing house will remain in place. Additionally, eight (8) new units are proposed; therefore the proposed project produces a net effect of more residential housing created. J. k. Proposed measures to avoid or reduce displacement impacts, if any: N/A I. Proposed measures to ensure the proposal are compatible with existing and projected land uses and plans, if any: The proposed development is consistent with the current residential zoning. Proposed Tots are within the LDR square footage criteria. 9. HOUSING a. Approximately how many units would be provided, if any? Indicate whether it would be high, middle, or low-income housing. Nine (9) medium -income housing units would be provided. b. Approximately how many units, if any, would be eliminated? Indicate whether it would be high, middle, or low-income housing. N/A - The one existing housing unit will remain. Eight (8) new housing structure will be provided. No units will be eliminated. c. Proposed measures to reduce or control housing impacts, if any: N/A — the development proposes more housing units. 10. AESTHETICS Foster Short Plat Page 8 of 11 Environmental Checklist ' Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments a. What is the tallest height of any proposed structure(s), not including antennas or chimneys? The single family houses will be designed per City of Tukwila building codes. All height restrictions will be complied with. b. What views in the immediate vicinity would be altered or obstructed? It is not anticipated that anv views will be impacted. c. Proposed measures to reduce or control aesthetic impacts, if any: N/A - It is not anticipated that any views will be impacted. 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The property will be illuminated during evening hours for safety purposes as consistent with residential uses. Residents' vehicle headlights will also produce light and glare. b. Could Tight or glare from the finished project be a safety hazard, interfere with views, or affect wildlife? The proposed development is not anticipated to cause any adverse affects on safety, views or wildlife. c. What existing off-site sources of light or glare may affect your proposal? None known. d. Proposed measures to reduce or control Tight and glare impacts, if any: N/A. 12. RECREATION a. What designated and informal recreational opportunities are in the immediate vicinity? N/A. b. Would the proposed project displace any existing recreational uses? If so describe. No c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: N/A. 13. HISTORIC AND CULTURAL PRESERVATION Foster Short Plat Page 9 of 11 Environmental Checklist Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments a. Are there any places or objects listed on, proposed for, or eligible for listing in national, state, or local preservation registers on or next to the site? If so, generally describe. None known. b. Generally describe any landmarks, or evidence of historical, archaeological, scientific, or cultural importance known to be on or next to the site. None known. c. Proposed measures to reduce or control impacts, if any: N/A. 14. TRANSPORTATION a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. The site is bounded to the north by South 144th Street. The proposed properties will be accessed via a shared access road/drivewav connected to South 144th Street. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? There is no transit service in the immediate vicinity of the project. However, King County Metro Transit service is provided along Tukwila International Boulevard which is approximately a 1/4 mile from the site. c. How many parking spaces would the complete project have? How many would the project eliminate? A minimum of 2 parking spaces will be provided per housing unit. The proiect will provide a net increase in parking spaces. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). The project includes the construction of a private access driveway that will serve all nine (9) Tots. Proposed frontage improvements will include a curb, cutter, and sidewalk along South 144th Street. e. Will the project use (or occur in the immediate vicinity of) water or air transportation? If so, generally describe. N/A f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. According to the 1TE Trip Generation Handbook 7th Edition, one dwelling unit creates 9.57 new weekday daily trips and 10.1 weekend daily trips. This project proposes a net of eight new units; therefore Foster Short Plat Page 10 of 11 Environmental Checklist Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments creating 76.56 new weekday daily trips and 80.8 new weekend daily trips. g. Proposed measures to reduce or control transportation impacts, if any: None. 15. PUBLIC SERVICES a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools)? If so, generally describe: The proiect would require fire protection and police protection that is normally associated with a residential development. b. Proposed measures to reduce or control direct impacts on public services, if any. None proposed. 16. UTILITIES a. Identify existing utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system; other: b. Describe the utilities that are proposed for the project, the utility providing the service, and the general utility construction activities on the site or in the immediate vicinity that might be needed. The proposed utilities include: electricity (Seattle City Light), natural qas (Puget Sound Energy, water (Water District #125), refuse service (Rabanco), telephone (Qwest, Comcast, et al), sanitary sewer (Valley View Sewer District), SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that t ; lead agency is relying on them to make its decision. Signature: Date Submitted: Foster Short Plat Environmental Checklist ((golf - Anna N • u en Page 11 of 11 wI a®r: JAN 2'i 10 COMMUN ry • •• COMPLETE APPLICATION CHECKLIST The materials listed below must be submitted with your application unless specifically waived in writing by the Public Works Department and the Department of Community Development. Please contact each Department if you feel that certain items are not applicable to your project and should be waived. Application review will not begin until it is determined to be complete. ADDITIONAL MATERIALS MAY BE REQUIRED. The initial application materials allow project review to begin and vest the applicant's rights. However, the City may require additional information as needed to establish consistency with development standards. City staff are available to answer questions about application materials at 206-431-3670 (Department of Community Development) and 206-433-0179 (Department of Public Works). Check items submitted with application Information Required. May be waived in unusual cases, upon approval of both Public Works and Planning APPLICATION MATERIALS: 1. Application Checklist (1 copy) indicating items submitted with application. V. 2. Completed ESA Screening Checklist, SEPA Environmental Checklist and drawings (5 copies). 3. One set of all plans reduced to 8 1/2" by 11" or 11" by 17". ./�/ Y 4. Application Fee: See attached Land Use Fee Schedule. V 5. Underlying permit application that triggers SEPA review. PUBLIC NOTICE MATERIALS: 0 rProvide 6. Payment of a $365 notice board fee to FastSigns Tukwila or a 4' x 4' public notice board on site within 14 days of the Department determining that a complete application has been received (see Public Notice Sign Specifications Handout). C ITY 7. Provide two (2) sets of mailing labels for all property owners and tenants (residents or businesses) within 500 feet of the subject property. Note: Each unit in multiple -family buildings--e.g. apartments, condos, trailer parks --must be included fs.ee Public Notice Mailing Label Handout). Or See attached Land Use Fee Schedule for(City of Tukwila to provide labels HA 8. If providing own labels King County Assessor's map(s) which shows the location of each property within 500 ft. of the subject lot. PROJECT DESCRIPTION AND ANALYSIS: V 9. Vicinity Map with site location. AGuidelines N/ 10. Provide four (4) copies of any sensitive area studies such as wetland or geotechnical reports if needed per Tukwila's Sensitive Areas Ordinance (TMC 18.45). See the Geotechnical Report and Sensitive Area Special Study Guidelines (online at www.ci.tukwila.wa.us/dcd/dcdplan.htm) for additional information. N/A_ f 11. Any drawings needed to describe the proposal other than those submitted with the underlying permit. Maximum size 24" x 36". • S 3AV H1W PROJECT SITE 99 " S. 154TH ST. VICINITY MAP NTS RECFMIED 1 JAN 21 2010 OOMMUN T1( :;� ' ' ST FOSTER SHORT PLAT 44XX14419 - S. 144TH STREET TUKWILA, WASHINGTON 98168 L• \Working\R09400 — Foster Short Plat\CADD\Drawings\EXHIBIT A.dwg E & NE1/4, SEC. 22-T23N-R4E, W.M. 507+00 —F— _minted a 15.0' PRIVATE DRAINAGE EASEMENT $ 505+00 506+00 511w n..1111. Kw)...m. 40- 3. 144TH STREET 3 504+00 O N 0 3 N0 s 3' It t / H10.0' SIDEWAU< & 1 UTILITY EASEMENT 10.0' SIDEWALK & UTTUTY EASEMENT LOT 9 (7,037 ) 103.50' 587°49'10'E ., EX. ,L! SE TO AIN 25.00' 588°49'58'E (6,623 SQ. FT.) LOT 1 . (17,453 SQ.. FT.) 1Me44i POPS (o3� 103.50' 587'49'10"E (6,598 SQ. FT.) 587°51'43'E 44.19' 27.34' _... _.. _.yam _... LOT 5 (6,578 SQ. FT.) 64.50' 6 587°5143'E • LOT 4 (6,731 SQ. FT.) 257.76' LOT 2 (6,903 SQ: FT.) 587°51'43'E 82.30' 62.30 LOT 3 h 'oo (7,597 SQ. FT.) i? N 66.00' 62.26' LEGEND 503+00 NEW IMPERVIOUS SURFACE WATER TO BE INFILTRATED ON SITE NEW IMPERVIOUS SURFACE WATER TO BE TIGHT LINED/DETAINED AND CONNECT TO CITY SYSTEM HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 It. REFERENCE SHEET NO. SHEET 1 OF 1 SHEETS 1- W - t • co Q N co I- I- a) C/) cn W u) O LL m X w N QC, LLI 0 0 O to M zdgo a x DESIGNED BY: a X CHECKED BY: ce z 2 re REVISION DESCRIPTION T LLI 0 d z . D: \Working\R09400 — foster Short Plat \CAD°\Drawings\R09400—PS—CV.dwg Layout Name: Layout1 Mar 24, 2011 — 3:31pm Phanti S 140Th ST. A PROJECT SITE S 1441H ST. 99 /= S. 148TH ST. S 150114 ST. A 1" w N VICINITY MAP NTS NOTES: 1. SITE WORK FOR THIS PROJECT SHALL MEET OR EXCEED CITY OF TUKWILA STANDARDS, 2007 KING COUNTY ROAD STANDARDS AND 1998 KCSWDM WHICH ARE HEREBY REFERENCED AS PART OF THESE PLANS. 2. THE DESIGN SHOWN IS BASED UPON THE ENGINEER'S UNDERSTANDING OF THE EXISTING CONDITIONS. THE PLAN DOES NOT REPRESENT A DETAILED FIELD SURVEY. THE EXISTING CONDITIONS SHOWN ON THIS PLAN SHEET ARE BASED UPON THE SURVEY PREPARED BY SCHROETER SURVEYING, INC. DATED DECEMBER, 2009. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING FIELD CONDITIONS PRIOR TO BIDDING THE PROPOSED SITEWORK IMPROVEMENTS IF CONFLICTS ARE DISCOVERED, THE CONTRACTOR SHALL NOTIFY THE OWNER PRIOR TO INSTALLATION OF ANY PORTION OF THE SITEWORK WHICH WOULD BE AFFECTED. IF CONTRACTOR DOES NOT ACCEPT EXISTING SURVEY, INCLUDING TOPOGRAPHY AS SHOWN ON THE PLANS, WITHOUT EXCEPTION, HE SHALL HAVE MADE, AT HIS OWN EXPENSE, A TOPOGRAPHIC SURVEY BY A REGISTERED LAND SURVEYOR AND SUBMIT IT TO THE OWNER FOR REVIEW. 3. CAUTION - NOTICE TO CONTRACTOR LOCATIONS SHOWN FOR EXISTING UTIUTIES ARE APPROXIMATE. UTILmES/SERVICES WATER GAS: KING COUNTY WATER DISTRICT 025 34.60 SOUTH 148TH STREET SEATAC, WA 98188 (206) 242-9547 SEWER VALLEY VIEW SEWER DISTRICT 3460 SOUTH 148TH STREET TUKWILA, WA 98168 (206) 242-3236 FIRE: TUKWILA, FIRE DEPARTMENT HEADQUARTERS STATION 51 444 ANDOVER PARK EAST TUKWILA, WA 98188 (206) 575-4404 SCHOOL: TUKWILA SCHOOL DISTRICT 006 4640 S 144TH ST TUKWILA, WA 98168 (206) 901 - 8000 PUGET SOUND ENERGY 1-800-321-4123 POWER: SEATTLE CITY UGHT (800) 862-1181 TELEPHONE: QWEST (800) 475-7526 FOSTER SHORT PLAT 44XX /4419 - S. 144TH STREET TUKWILA, WASHINGTON 98168 NE1/4, SEC. 22-T23N-R4E, W.M. LEGAL DESCRIPTION CONSULTANTS LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE(S) 31, RECORDS OF KING COUNTY, WASHINGTON. SITUATED IN THE COUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERLINE OF SOUTH 144TH STREET NORTH 87'49'10 WEST BETWEEN 42ND AVE SOUTH AND 46TH AVE SOUTH. VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID: 815; POINT NAME 93V-902; 0.5- COPPER PIN WITH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 144TH STREET AND 46TH AVE SOUTH; ELEVATION = 287.900 FEET NAVD88 DRAWING INDEX REFERENCE SHEET NO. DRAWING TITLE OWNER INFORMATION TL INVESTMENT GROUP, LLC 4055 - S. 148TH STREET TUKWILA, WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 CV COVER SHEET EC1 TESC PLAN EC2 TESC DETAILS PGI ROADWAY PLAN AND SECTIONS PG2 ROADWAY PROFILES AND DETAILS DRI DRAINAGE PLAN AND ROOF INFILTRATION DETALS DR2 DRAINAGE PROFILES AND STORMFILTER DETAILS DR3 DETENTION TANK PLAN, SECTIONS AND DETAILS DR4 DRAINAGE PLAN AND PROFLE AND DETAILS LD1 TREE RETENTION AND LANDSCAPE PLANTING PLAN LPI STREET LIGHTING PLAN Ull SEWER EXTENSION PLAN AND PROFILE UT2 WATER MAIN EXTENSION PLAN AND PRORLE DTI DETAILS 1 SNI STANDARD CONSTRUCTION NOTES CML: PBG, LLC 5130 - S 166TH LANE SEATAC, WA 98188 (206) 229-6422 CONTACT: HAN PHAN, P.E. SURVEYOR SCHROETER SURVEYING, INC. (SEE SEPARATE DRAWING) PO BOX 813 SEAHURST, WA 98062 (206) 242-6621 CONTACT: RICHARD SCHROETER, PLS CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. CV SHEET 1 OF 15 SHEETS 0 cc 0 C/) cc w F- CO 0 u- CO CO o Cr) COVER SHEET LEGEND PROPERTY UNE - EASEMENT — RIGHT OF WAY CENTERUNE RIGHT OF WAY/ADJACENT PROPERTY UNE SD PROPOSED STORM DRAIN SS PROPOSED SANITARY SEWER PROPOSED WATER SERVICE UNE —o—o—o—o— SILT FENCE CLEARING OMITS • m ASPHALT PAVEMENT CEMENT CONCRETE PAVEMENT PROPOSED STRUCTURE (APPROX. LOCATION) INLET PROTECTION CATCH BASIN -TYPE 1 CORNER SET SIGN AND POST INFILTRATION TEST (APPROX. LOCATION) MH/CB-TYPE2 FIRE HYDRANT WATER METER PROPOSED INFILTRATION TRENCH a SS 0 w 210 EDGE OF PAVEMENT SEWER UNE STORM UNE GAS UNE WATER UNE FENCE UNE BUILDING UNE CONTOUR fl SET REBAR W/CAP 123604 * PROPERTY CORNER FOUND THIS SURVEY POWER POLE WITH UGHT DC GAS VALVE FIRE HYDRANT >C WATER VALVE w^ ❑ WATER METER ® CATCH BASIN ® STORM MANHOLE IE SEWER MANHOLE POWER POLE DECIDUOUS TREE EVERGREEN TREE —® CITY STREET LIGHT —0 PRIVATE STREET UGHT 1)LJu-UY 19 '4' 41 4 U 13 lv E Ek 3PUN N I, .-4 1-iN o O I o M o 0 z v CC Z x a DESIGNED BY: Z x a x x 1 0 CHECKED BY: REVISION DESCRIPTION rmm 0 Lu CO w z NE1/4, SEC. 22—T23N—R4E, W.M. M SEQUENCE OF CONSTRUCTION REFERENCE SHEET N0. SHEET 2 1. FLAG AND STAKE CLEARING OMITS. 2. INSTALL EROSION CONTROL MEASURES (SILT FENCE. ETC.) M EC 1 OF 15 SHEETS ,A, w w w 3. FIELD LOCATE ALL UTIUTIES 4. INSTALL CONSTRUCTION ENTRANCE. 5. CLEAR AND GRUB SITE. 6. GRADE THE SITE. 7. INSTALL INFILTRATION TRENCHES, SANITARY SEWERS. STORM, WATER, AND OTHER SITE UTILITIES; PROVIDE CATCH BASIN INLET PROTECTION AT THE NEW INLET LOCATIONS 8. CONSTRUCT BUILDING STRUCTURES 9. REMOVE TEMPORARY EROSION CONTROL FACIUTY UPON STABILIZATION OF ENTIRE PROJECT SITE, AS APPROVED BY THE CITY OF TUKWILA. NOTES FOSTER SHORT PLAT 44XX / 4419 - S. 144TH STREET TUKWILA, WA 98168 TESC PLAN r.. Y 144TH STA 5(L5+41 R•= r r _ _ — "' 5_ NU CLEARING UNITS PVT. S A (TYP) 00 a 505+03 144TH STREET 504+00 — _ _ —+-- •°� �— g� " +— +— �� q/ I S 0 5S ,5= 3 ( ..• WO -:0 ""'r`'�- TO BE REMOVED .<. <° ,, a am— CNI IX ..•1x,1-:Id:l g = 9 o — =c� _ � �•► _S -- _ ---- �- --- --� • " _ _ _ _ _ - ,,,amu— \ F ��s — — _� "� __ -•- '� ,302 _ — — 3 aTwi y ap.r• �, ,,` .. ' `® L...�+ ead. ' 'sz 1j TREE Z. 2- 1 J } IRn , 1 , ..-w.�,t ;hys' `%�c� ) 9crr' 7.5` {®1 I f ti^c r• TO BE SAVED () 1 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE, SEWER AND WATER PLANS EARTHWORK VOLUME ESTIMATES N ° 1 N w a o W �, o is } I 1 j 1 $ ;,..s,,: -,M.►1:;,c.,1 : ani :�;.c. " ".• '., ► N'� `T i� ��' I n \ it /tea l'""+;a Or. l0r7.=*"" :5£ S /��----- �I,3. \ i 1 LOT 9 .7 cP y .✓ 6 1 1 ''• TEMPORARY STOCKPILE AREA J I 1 `.5..q‘:jU_ / I 'i ,,,,,,•,,,,,,,,' 1.e •.e. a a� �I soo ` ` 1 -- I 1 / I:� CONSTRUCTION ENTRANCE I � !' 1 • N I i� i `�!' TO REMAIN LOCATION CUT (CY) FILL (CY) ACCESS ROAD/DRAINAGE FACILITY 975 185 1i0., ,,,,� 'o �°"'" -� � 10.0' SIDEWALK k , 1 EASEMENT $ + � —I� X. COVERED P+RCH TO BE DEMOU ED I r-----T-44chcirlk _ fenceUTILITY is �..5 west 15.0' P-VTRAINA6 EASEMENT, \ EX. SHE 1_ 1�T I ,-, I /II• /G� - i / ' AI \ TO BE DEMOUSiE I I �' "°' LOT 1 �� I I E., \ 1O^ 1 I 1 1 ,, LOT 8 6 FT. ' o ( ) r 1 G I 1 i 1 . , . i ••.cau. PO, i� 11 x7,453 $Q. Fr.) I w t S 10.0''IDEWALK & 1 U UT I EASEMENT-„,o t` - 55 _ est edge urcrece s L 'west QT ecst'' fn , x�� J �. u°�a .IpAOIS f ` / 6 ,• 110350' \ 1 IIIII 25 1�JAi11Ji I til . r ✓ (LOT 2) w f �, aest edge concrete is 1.1' west 1 \ is ;. ). :lopment and Gvll Englnmtng Consultants uth 166th Lane NA 98188 !29-6422 5\AO��Is+ oPtn '1 b. y 5C,y 9BT19'10'E " /� ` \ I , !a� �.m / w n / 0.2' east _ \ X. GARAGE TO BE DEMOUSHED \ \ Lb 7 t (6598 SQ. •) \ , ��• t• I 1 1 1 EX. DECK ,„,,-.2- ,,,,:k i I 1BE REMOVED I , �. .� I �''• / / \ \ ' V-e [ I /\ ,1.4e. "R` I 8 SET FENCE CIRCUMFERENCE EQUAL TO OR GREATER THAN •CIRCUMFERENCE OF DRIPUNE - --Al :� '� •- \ // I , \l — I �•Fg I T — .., . xrE �4sr _ 1 .31e 37_10' 1` ISSUE DATE -10-2011 .PHAN .PHAN .PHAN 1 _ � ` `7 100 1' Ij *Is r ��'41��1 \ 1 / ir 6607 / 6 FT. HIGH CHAIN i INK FEIJCE ♦♦ ♦ Vit, ♦i ♦ j,♦♦♦0♦++♦+♦ DESIGNED BY: H. H CHECKED BY: PROJ. MNGR: H. H TO ENCLOSE TREE ENTIRELY CONCRETE PIER 01•4►♦♦♦� .) ►�4+++ ♦♦• • 4 +• +♦♦♦+♦♦♦+♦ •••••••••••••+•.....•.♦.I I�♦♦♦♦♦♦.♦♦♦♦•4441.♦♦ ♦+♦♦♦�►♦♦♦♦+ )+♦♦♦♦•+♦♦ • + ►♦♦♦♦i4+♦♦4 14♦♦♦♦♦♦++♦+ l►♦ ♦$O..s+♦♦ tailit:A. JOB NO. R09400 _ ' �,, . to 1 11I — r o VT. RD. STA 12+19.04= p HAMMERHEAb STA 104+00 I N z c �e4 < „� I Wa o W 1 d F — T— — 1 1 " a c TEM'ORARY o I o STOCKPILE AREA 1 goalr`♦+♦♦♦♦4+♦+++♦♦�.h /"'' j o I a } /�1 +41 i♦♦♦ 111 +..�0•♦♦�i.►4f1 ♦ 4♦♦4+++-♦♦♦+♦4,i P- ►. ♦ ♦ ♦ ♦+++++♦ - _._. ++++. ♦ ♦ ♦♦♦ s • '..e►++s►♦4••4t-*EN' +♦• ♦ + ++++4 : . ♦ + ++♦ � ♦ ♦4,• ♦ ++♦i. ♦ ♦ ♦.♦♦♦+♦.+ ••• • • .•:: i •t 1 ♦ ++♦ ♦++++ NOL. LU — ;� u $ \i ' 1131 LOT 6LO t (6,679 SQ. FT.) I INLETOTEC110N (TYP) 1 0\ ,, 5 .I 1 (6,578 . FT.) 1 1 0, 1 (6,731 i I Mx I I LOT 4 51 1 FT.) 1'� LOT? 1 _w3j . ' / 1 ...„..<- 1 i REVISION DESCRIPT LI c\I 2c TREE PROTECTION MEASURES ct Li M ''"� ``° `'" •„,,e;) 1 __.t'-\N.4e / •`,"lMV 6M` ` 6AlSD' ( �i�` i `'•� / ” , `:/'0600' \, ,Drn 11 1 6720' _.,.o SCALE NONE . - 58751,13TT 15 A .. u 57.76• o • 14 I 13 Y HORIZONTAL GRAPHIC SCALE zo ,0 0 ,o zo CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1 SILT FENCE TYP ( ) I I \ 1 i ch = 213L 1r".. \ I\ r /�\I 3 JOINTS IN FILTER FABRIC SHALL BE SPUCED AT POSTS. USE STAPLES. WIRE RINGS, OR EQUIVALENT TO ATTACH FABRIC TO POSTS. 2- X 2' X 14 GA. WIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED. \...O.O.i� ... .. MIMIIIIIEMINEWFOONSMINN \MIII1IIME111111l14M111111E '� �O�V��IIlD•�n�� a�OUNU 1 i..... \vN0�ME1u111M11 �iuu�lai0ii -11 I 11 II II u u IL 6' MAX. POST SPACING MAY BE INCREASED TO 8' IF WIRE BACKING IS USED 2- X 4' WOOD POSTS. STEEL FENCE POSTS, REBAR, OR EQUIVALENT NOTES: II II FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE c1 FILTER FABRIC 4 MIN BACKFILL TRENCH WITH NATIVE SOIL OR 3/4- - 1.5" WASHED GRAVEL UNDISTURBED GROUND DESIGN AND INSTALLATION SPECIFICATIONS- 1. THE GEOTEXTILE USED MUST MEET THE STANDARDS LISTED BELOW. A COPY OF THE MANUFACTURERS FABRIC SPECIFICATIONS MUST BE AVAILABLE 014 SITE. ADS (ASTM D-4751) = 30-100 SIEVE SIZE (0.60-0.15mm) FOR SLIT FILM 50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS WATER PERMITTIVITY (ASTM D-4491) = 0.02 SEC-1MIN. GRAB TENSILE STRENGTH (ASTM D-4632) = 180 LBS MIN. FOR EXTRA STRENGTH FABRIC 100 LBS MIN. FOR STANDARD STRENGTH FABRIC GRAB TENSILE ELONGATION (ASTM D-4632)=30% MAX. ULTRAVIOLENT RESISTANCE (ASTM 0-4355) = 70% MIN. 2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANT A STRONGER FENCE. 3. WHERE THE FENCE 15 INSTALLED, THE SLOPE SHALL BE NO STEEPER THAN 2H:1V. SILT FENCE DETAIL PER KING COUNTY SWDM FIGURE 0.3.3.A SCALE NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 MAINTENANCE STANDARDS: 1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. 3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCING CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNEUZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE AND OR REMOVE THE TRAPPED SEDIMENT. 4. SEDIMENT MUST BE REMOVED WHEN IT IS 6' HIGH. 5. IF THE FILTER FABRIC HAS DETERIORATED DUE TO THE ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. CONTRACTOR TO PROTECT MUD FROM BEING TRACKED ONTO THE PUBUC ROAD EDGE OF EXISTING PAVEMENT MAINTENANCE STANDARDS: 1. ANY ACCUMULATED SEDIMENT ON OR AROUND INLET PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED WITH WATER, AND ALL SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE. 2. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE THIRD OF THE AVAILABLE STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY. 3. REGULAR MAINTENANCE IS CRITICAL FOR CATCH BASIN PROTECTION. UNLIKE MANY FORMS OF PROTECTION THAT FAIL GRADUALLY, CATCH BASIN PROTECTION WILL FAIL SUDDENLY AND COMPLETELY IF NOT MAINTAINED PROPERLY. CATCH BASIN GRATE ■ ■1111111■"■ ■ ■:■'!■■f■'I■II■I■I■'I■'■:■I■1■11■,■1■ 111 II OVERFLOW FILTER MEDIA FOR DEWATERING NEW ASPHALT PAVEMENT NOTES POROUS BOTTOM CATCH BASIN INSERT CATCH BASIN SEDIMENT CONTROL SOUD WALLS REFERENCE SHEET NO. EC2 SHEET 3 OF 15 SHEETS TESC DETAILS THIS DETAIL IS ONLY SCHEMATIC. ANY INSERT IS ALLOWED THAT HAS A MIN. 0.5 CUBIC FEET OF STORAGE WITH THE MEANS TO DEWATER THE STORED SEDIMENT, PROVIDE AN OVERFLOW, AND CAN BE EASILY MAINTAINED. 100' MIN. 0 INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE / R=25' MIN. DITCH AS PER KING COUNTY ROAD STANDARDS 4' TO 8' QUARRY SPALLS GEOTEX11LE UNDERUNE NOTES 15' MIN. PROVIDE FULL WIDE OF INGRESS/EGRESS AREA AS PER KING COUNTY ROAD STANDARDS, DRIVEWAYS SHALL BE PAVED TO THE EDGE OF RIGHT-OF-WAY PRIOR TO INSTALLATION OF THE CONSTRUCTION ENTRANCE TO AVOID DAMAGING OF THE ROADWAY. IT IS RECOMMENDED THAT THE ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE ROAD. INLET PROTECTION DETAIL O PER KING COUNTY SWDM FIGURE D.3.5.F SCALE NONE MAINTENANCE STANDARDS 1. QUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. 2. IF THE ENTRACE IS NOT PREVENTING SEDIMENT FROM BEGIN TRACTED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE ENTRANCE. OR THE INSTALLATION OF A WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON THE AREA COVERED WITH CRUSHED ROCK, AND WASH WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND. 3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED ON-SITE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET, EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBUC SAFETY. IF IT IS NECESSARY TO WASH THE STREETS, THE CONSTRUCTION OF A SMALL SUMP SHALL BE CONSIDERED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP. 4. ANY ROCK SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY. 5. IF VEHICLES ARE ENTERING OR EXISTING THE SITE AT POINTS OTHER THAT THE CONSTRUCTION ENTRANCE(S), FENCING (SECTION 5.4.1) SHALL BE INSTALLED ON CONTROL TRAFFIC. CONSTRUCTION ENTRANCE DETAIL O PER KING COUNTY SWDM FIGURE D.3.4.A SCALE NONE Ln- 0a CO CO 0 0 M O 2 -' 00 cc Z z Q a a x = DESIGNED BY: co 0 v CHECKED BY: z 2 a 00 a REVISION DESCRIPTION EN mO od >[:JLIU r m z NE1/4, SEC. 22-T23N-R4E, W.M. 24' WIDE DRIVEWAY APPROACH INSTALL STREEZ SIGN -AND -POS PER CITY OF TUKWILA STANDARD INSTALL STREET MONUMENT Ili STA_05/t43.6' PVT. RD.,STA 10+00 rM EX MAILBOXES TO BE REMOVED & REPLACED w 00 ss 1 EX_CURB_&_014$ER= TOP\OF SIDEWALK Tq REMAIN TO MATCEX. GRADE :nom - so REMOVE/REPLACE CURB & GUTTF 'NO PARKING FlREUNE TRAFFIC LETTER (TYP) SEE SHEET PG2 EOR D 0 or 0 or 10.0' SIDEWALK & UTILITY EASEMENT 4CPCSED MOLE Fe RESC@ICE ,(7,037 SQ. FT.) 77 7 TOP 0F'SIDEWALK-S EET DT1 iD M -�• 92ADEI . -5.0' WIDE SIDEWAU( Ank oI BSBL. (TfP)jll ._.,. - moa EX.I}OUSE / TO RAIN/ • 15.0' P -VT -DRAINAGE EASEMENT =sir ^6SBL (TYP) DE DRIVEWAY APPROACH, i OT 1) ;18' WIDE DRIVEWAY APPROACH p(L0� &9) 14zy n na.= �nua �. cid :rich tN. fens NNN dear N.s a.. c^air. lino is 5.3' „ext. sit= m (6.623 SQ. FT.) CEMENT CONC. VERTIC CURB & GU 10°5 1A5,o to't 5 , JNSTALL N.D.fJ. (9) 'MAILBOX STRDCTURE Kar kMEHT, CONC. REVERSED Le! CURB GUTTER ALK RAMP TYPE 4 (TYP)/ est edc is 1. Carm LOT 2 (6,903 SQ. FT.) .t,e ,cin Sl 5143•E •.4414' mN IN= NI .eK,/caner y,p :k hen • Z 0" crwe� o 11Rl}IEYYA)f. 18' WIDE DRI (LOT 4, 5 & 6 3 � DRIVEWAY: 5.0; WIDE SIDEWALK , 'VT. RD.STA112+19.04= AMMERHEAq awLESTA 100+00 FfAIILY 9NNCE . I '1 FA1� f' DBJCE i LOe 5 (6,578 SQ. FT.) 15 14 S. 144TH STREET 20.0' ROW VARIES -16.15' MIN 6' VARIES 3.85' MIN 5.0' 10.0' SIDEWALK & UTIUTY EASEMENT 1.0' IW 1- I~ IW 1t4 u, Ia W EX. CURB & GUTTER ----! --- EX. SLOPE ---_._ ____ EXISTING PAVEMENT PAVEMENT I ;\ EX. 12' STORM DRAIN -1-{ I EX. GAS UNE � LvJ ---0 1 r EX. 8' SEWER MAIN 10.0' SIDEWALK & UTILITY EASEMENT 2' OF Ws' MINUS CRUSHED ROCK 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 CEMENT CONC. REVERSED CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 2R EXISTING GROUND 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 2' OF 5'' MINUS CRUSHED ROCK S. 144Th STREET SECTION A -A z CC CC SCALE NONE 20.0' (TRACT 'A') c. HAMMERHEAD TURNAROUND 10.0' 10.0' z W 0 5.0' U11U1Y Iz IJ W 2R 2' CLASS B ASPHALT , CONCRETE PROPERTY UNE 10.0' SIDEWALK & U11UTY 6' COMPACTED DEPTH CRUSHED SURFACING BASE COURSE EASEMENT IW EXISTING GROUND SUBGRADE SHALL BE COMPACTED TO 95R MAX. DENSITY HAMMERHEAD TURNAROUND C -C PVT. ACCESS ROAD 25.0' (TRACT 'Al SCALE NONE PROPERTY UNE 10.0' SIDEWALK & UTILITY EASEMENT 5.0' SIDEWALK EXISTING GROUND 2' OF NI' MINUS CRUSHED ROCK 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 12.0' 12.0' 2R 6' 2' CLASS B ASPHALT CONCRETE 5.0' EASEMENT 1.0' SIDEWALK 2R CEMENT CONC. REVERSED CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 PVT. ACCESS ROAD SECTION B -B SCALE. NONE 6' COMPACTED DEPTH CRUSHED SURFACING BASE COURSE SUBGRADE SHALL BE COMPACTED TO 95R MAX. DENSITY NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE AND UTIUTY PLANS. 5. SEE SHEET PG2 FOR ROADWAY PROFILES. 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 2' OF %' MINUS CRUSHED ROCK CEMENT CONC. VERTICAL CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 DRIVEWAY APPROACH LOCATION LOT STATION LOT STATION 1 10+65 (LT) 7 11+68 (RT) 4 99+65 (LT) 8 11+08 (RT) 5 100+09.50 (LT) 9 10+69 (RT) 6 100+65 (LT) HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 bid, = 20L CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. Pal SHEET 4 OF 15 SHEETS 0 z ' Z J z O QU 0 E ATE (( o uJ 0 w N N 0 M dz 8 DESIGNED BY: m 0 CHECKED BY: 0 0 a REVISION DESCRIPTION RE CE VEO 0 0 0 z Layout Noma: Layouts 312 3082 304, 300 296 292 DATUM EL8V 29909 NE1/4, SEC. 22-T23N-R4E, W.M. 10+00 11+00 PVT. ACCESS ROAD PROFILE 12+ 312 308 304 300 296 292 D42W MSV 29900 do I MOO'S '- zs HIG4 POINT FIFV=_ nl o d HIGH POINT STA = 10+83.45 HIGH PN STA =10+62.3C <° u�i <� wnem $ �+ is F+ O 1...‘.'6 a 8 4'VI tlty = 2Ut10 m A.D. _ -8.50 n 1 g R a �'^' o mo II=��•8g ;:gx Gp + O K = 7.67 WU p Go ] �<m (j.x Tlca <9 t Na I> -G.1.41,-, H . `S' u m •96x' -__=<S5 �, =1d da EX GROUND CA 45 �nm m e+.m c�� my"I Jl-u.y' I/ w'..9 fly- iii 5 nm t - ----- ' mo i m <D1 1. \\ -osnx _ S 1 1S a. m U' WIr \ �� a=z 5ccv -Ion FINISH GRADE - _ 00x905 .00 FINISH GRADE --/- - - - - \ EX. GROUND UM1 FINISH GRADE (TIP) pYf .7 -a m ovCV COO Nn ,.� Mh NN N EX. ;ROUND (TYP) i FINISH GRADE (TYP) 1 n m 10+00 11+00 PVT. ACCESS ROAD PROFILE 12+ 312 308 304 300 296 292 D42W MSV 29900 do o zs o o 40.00'VC <° u�i <� wnem +_o 88 is F+ PVI IN STA = 100+37 ELEV = 299.06 a iw`w II II=��•8g ;:gx A.D.K=6.89 •96x' -__=<S5 �, =1d da 0. mm �nm m e+.m •---2.00Z-418 \ O w m <D1 1. W> g g m U' WIr \ �� a=z 5ccv FINISH GRADE •.�4. • awwm d' ELI GROUND - - - - \ EX. GROUND UM1 FINISH GRADE (TIP) pYf .7 -a m ovCV COO Nn ,.� Mh NN N 99+00 100+00 HAMMERHEAD TURNAROUND PROFILE 101+00 VERTICAL GRAPHIC SCALE 5 2.5 0 2.5 5 2 1 inch = 50. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 i I 1 inch = 20t REFERENCE SHEET NO. PG2 SHEET 5 OF 15 SHEETS Co co 0) CEMENT CONCRETE SIDEWALK RAMP 3/8" EXPANSION JOINT SIDEWALK RADIUS POINT OF CURB RETURN 0. 7.0' CEMENT CONCRETE PEDESTRIAN CURB RAMP 2.0' CURB AND GUTTER 3/8' EXPANSION JOINT CEMENT CONCRETE SIDEWALK 0.84' DETECTABLE WARNING PATTERN (EE DETAIL) 7.61' LANDING PLAN VIEW SIDEWALK RAMP P 7-0" LANDING DETECTABLE WARNING PATTERN (SEE DETAIL) SECTION U SIDEWALK RAMP TYPE 4A DETAIL 13 PER WSDOT STANDARD PLAN F-40.16-00 SCALE NONE TOP OF ROADWAY DEPRESSED CURB & GUTTER DETECTABLE WARNING PATTERN SEE NOTE 5 MIN. MAX. A 1 5/8' 2 3/8" B 5/8" 1 1/2" C 7/16" 3/4" D 7/8" 1-7/16" PLAN n �, C ELEVATION TRUNCATED DOMES DETECTABLE WARNING PATTERN DETAIL 5'-D" 2% MAX._ 1 CEMENT CONCRETE SIDEWALK CEMENT CONCRETE PEDESTRIAN CURB SECTION ® VARIES 0" TO 6" TOP OF ROADWAY CEMENT CONCRETE CURB & GUTTER TOP OF ROADWAY CEMENT CONCRETE CURB & GUTTER NOTES 1. AVOID PLACING DRAINAGE STRUCTURES, JUNCTION BOXES OR OTHER OBSTRUCTIONS IN FRONT OF RAMP ACCESS AREAS. 2. RAMP SLOPES SHALL NOT BE STEEPER THAN 12H:1V. 3. SEE SIDEWALK SPACING EXPANSION JOINTS AND SCORE MARK DETAIL FOR ADDTIONAL NOTES. 4. THE BOTTOM OF THE RAMP SHALL HAVE A LEVEL AREA (NOT IN EXCESS OF 2% IN ANY DIRECTION). 4' X 4' 5. DETECTABLE WARNING PA17ERNS (TRUNCATED DOMES) MUST BE PRECAST PAVERS MEETING ASTM C902 CLASS SX TYPE I OR C736 OR C1272 TYPE R. ACCEPTABLE MANUFACTURERS AND PRODUCTS ARE a) ADA PAVERS AS MANUFACTURED BY WHITACRE-GREEK, AS DESCRIBED ON THEIR WEBSTEhttp://ww.wgpaver.cam/ada_brochwepdf (BRICK RED) b) ARMORTILE AS MANUFACTURED BY ARMOR-11LE TACTILE SYSTEMS, AS DESCRIBED ON THEIR WEBSTE http: //www.amlor-tile.can/truncateddome/cast-in.place.htmjCast201n%20Place%20Colors (BRICK RED) c) ASTINTACT WARNING PANELS AS MANUFACTURED BY MASON SUPPLY CO. OF PORTLAND, OR, AS DESCRIBED ON THEIR WEBS1E http://www.masco.net/castintrict/ (BRICK RED) d) STEP.SAFE AS MANUFACTURED BY TRANSPO INDUSTRIES, INC. OF NEW ROCHELLE, NY, AS DESCRIBED ON THEIR WEBSITE htlp://www.tronspo.r.dm/Step-Safe.htm (BRICK RED) 0.05 FT. 3/8" EXPANSION JOINT CEMENT CONCRETE SIDEWALK 0.02 FT./FT. on FT. 'NOTE: TOP OF UP AT DRIVEWAY APPROACH CEMENT CONC. VERTICAL CURB AND GUTTER DETAIL PER 2007 KING COUNTY ROAD DESIGN AND CONSTRUCTION STANDARDS FIGURE 3-002 SCALE NONE 15 ILNO PARKING FIRE LANE NOTES 1. DESIGNED FIRE LANE LETTERS SHALL BE PAINTED IN YELLOW. 2. NO PARKING FIRE LANE" SHALL BE PLACED 50 FEET CENTER TO CENTER TRAFFIC LETTER DETAILS 16 SCALE: NONE DESIGNED BY: m CHECKED BY: NOTES: NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET PG1 FOR ROADWAY PLAN AND SECTIONS 1;tA 0 -C)0 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REVISION DESCRIPTION t1 r (A z -J auj tu 0 0 z w NE1/4, SEC. 22-T23N-R4E, W.M. 144TH STA 505443.69= 1v PVT. RD. S 10+00 CB 18 -TYPE 1 STA 2+08.50, 9.75 RT 507+90 W/LOCKING VANED GRATE 71Y12'001 /® 0.50% 7- 9 F4 a w CB g6 -TYPE 2 (48') STA 10+26, 12.25' RT W/LOCKING VANED GRATE 5 5+00 .,C1317 -TYPE 1 STA 2+08.50, CL W/SOU11, LOCKING UD 15.0' PRIVATE DRAINAGE EASEMENT 95 LF 12'0ADS N12 0 �aZl7��SBMED .111010; • IV�:�.r 26 LF 12'0PVC 0 0.50% 505+00 CB #5 -TYPE 2, 54'WOFL CO STA 10+54.75, 6.0' RT SEE SHEET DR3 FOR DETAI o 10 LF 6' 0 ADS N12 ROOF DRl11T) STUB 0 0.SD% MIN. CB STA 2+70.50, CL W/SOLID L0CKI11G UD 10 LF 6"0ADS'V12 ROOF DRAIN STUB 0 0.50% MIN. • C.7' = 1, OPCS 4.0‘;‘'' P �B fl -TYPE 1 STA 100+74, 9.25' LT I. W/LOCKING VANED GRATE ' & OIL/WATER S€gRATOA W/FINE MESH SCREEN s` N -11 59 LF 8'0ADS N12 0 0.50% 3LF1'2 0 PVC 10 0.0% ( 10.0' SIDEWALK & UTIUTY EASEMENT LOT9 0,037 SQ. Fr.) 1 STA 10+$0, 8.0' RT CENTER OF TANK 103.50 3 587'4910T TO BE CONNECTED TO PERFORATED TIGHTUNE STUB OUT LOT 8 (6,623 SQ. Fr.) 70 LF �" 0 DI ROOF DRAIN STUB (LOT 7) 00.50% CB /3 -TYPE 2 (48") STA 11+85,12.25' RT W/ICOCKING VANED GRATE 6- 103.50' 917. 144TH STREET � z Q W TROL W/SOuq Lo UD I a o 7 3 504+03 i 0 N 0 N m ti 1 1', . SIDEWAU( & 3TY FySEMENT 4'L ti 1 I' DRAINAGE PLAN AND PROFCE -1_,„,......,,,.,, -loo'I 1 / 44LF8'0AD N12 00'•I% TO BE CONNECTED TO \ PERFORATED IGH NE STUB OUT LO 7 (6,598 Sr. SEE%HEET DR4 FOR 7.`• -{ I~� CC 0cc +cPa Iecareo ,e. �1 :en r. 2. e/'e. 8.0' DIA. X 115.0' LING CMP;DETENTION TANK SEE (SHEET DR3 FO" DETAILS I$ II I!I O( FTSE TO RE AIN „L 7 ri "lep• LOT 1 ' • . (17,453 SQ. FT.) STA 11+75, 8.0' RT CENTER OF TANK Asti c X0.12 le-:9 LF 12'0PVC 1.0% B$4 -TYPES 48' 2-CARTRIDG VORMFILTER W/SOLID LOCKING tip, STA 11+1,5.0' RT I SEE SHF) T DR2 FOR DETAIL I �! y/ I 4 SE. DR4 FOR DRAINAGE PROFILE \ I / /.."1 44.14' PVT. ACCESS ROAD/LOT 6 ROOF INFILTRATION TRENCH (203'WX301X21)) (3'W X 201 X21)) 9LF8"0 gl SOLID, PVC 0'Q.0% LOT 6 / I t C`P 1-. i 10 LF 6"0soup PVC 6,629 SQ. Fr.) TIGHUNE 0 0.0% (TYP) i 1 ? P /�k'4• I„M rr� ROOF/FOOTING INFILTRATION TRENCH (3'W X 451 X 21)) I SEE NOTE 7 I 66$' 15 kLF 12' 0 0 PVC 5p q TO BE CONNECTED T0; j PERFORATED TIGHTUNE S)B OUT , #1.-TYP. i E STA 12+27, 3010' RT 9, W/LQCKING VANED GRATE II1 (678 .5) l 1 61150' 1 J AMMERHURA ] 0+00 LU 4 U6" Sol ll, / ZSZAY (6,731 SQI Fr.) It t Ig Iv 14 LOT 2 (6,903 SQ. Fr.) fence v:e fawn 11T IN c1cir 'ink fence i= 5.3' west •/s.- est edge concrete is 1.1' 'west E+i.d•i a *est edge concrete is 1.1' west 8230' 6730' 4/ rt.) LOT 3.. 0 (7,597 SQ. FT.)/ ,c/ e&o 6226' 8 999 ,iv Ione(. b 92 .an SEE PLANS 10.0' MIN 5.0' MIN 6" RIGID PERFORATED PIPE 0 0.0% INFILTRATION TRENCHES 6" PVC SOLID 0 0.0% A WASHED ROCK 3/4" - 1 1/2" 6' RIGID PERFORATED PIPE 0 0.0% EXISTING GROUND PLAN VIEW NTS ROOF DRAIN CATCH BASIN OR AREA DRAIN WITH SOLID UD ROOF DRAIN ROOF DOWN SPOUT WITH OVERFLOW WYE AND SPLASH BLOCK NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR2 FOR DRAINAGE PROFILES AND DETAILS. 5. SEE SHEET DR3 FOR DETENTION TANK DETAILS. 6. SEE SHEET UT1 & UT2 FOR SEWER AND WATER PLANS. 7. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET. FROM PROPOSED INFILTRATION TRENCH. 8. ALL UTIUTIES TO BE PLACED UNDERGROUND. FINE MESH SCREEN ELEVATION VIEW NTS BACKFILL • • EXISTING GROUND '0 WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC 6' RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) 4' SOUD PIPE WASHED ROCK 3/4" - 1 1/2' ROOF/FOOTING INFILTRATION TRENCH O SCALE NONE /\ HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 COSTING GROUND.-\ PVC 90* ELBOW, ROTATE TO FIT (TYP) 6" PVC PIPE TIGHUNE 0 0.0% 6' RIGID PERFORATED PIPE (LEVEL) (TYP) END CONNECTION (BETWEEN PERFORATED PIPES) 0 SCALE: NONE \t\ C)CY REFERENCE SHEET NO. DR1 Ce CL Ct co CO _.SHEET 6 OF 15 SHEETS 0) J I Q w Z Q //�� O w cc O J ZLL <z O IL 0 0 zi! ER 3 Pil izich 1/1 0 05 4-1 1.4 CNI CL CL 0 cc CHECKED BY: o. REVISION DESCRIPTION LI co S 0 0 i 8 i 6 Mar 24. 2011 — 3:41pm PhanH 312 308 W WN 30432 ccui 300 296 292 288 CB 15 -TYPE 2 54' FLOW CONTROL 10+00 11+00 DRAINAGE PROFILE ALONG TRACT 'A' HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20t 1 inch = 5ft MANHOLE STORMFILTER - PLAN VIEW O 1 MANHOLE STORMFILTER - SECTION VIEW O 1 02098 CONTECH Stammer Solutions TRTWMNRYNM00IP ILS P10.U7. • 8. 7" Ila 5.TOT.28 ..a 4AMOS SZ4s.°m. r °.OAATc MO MMUS MC mem main MOM w uTcwLI• Wi :7 i 11674:1 STORMWATER _�UTIONS_ a.wwnm..w.aa PRECAST 48' MANHOLE STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL ~NI 1 w memos I°oaeloa II I W0IlUfl CM1 IOIMwt.m IOevEAlw 12+00 312 308 304 300 296 292 CB 16 --TYPE 2 (48') STA 1+12.25, CENTERLINE RIY ELEV=299.73 GENERAL NOTES SIA 10+54./2. 0.0787 IE 11:41.11.567429.3._ ai � C8 /4 -TYPE 2. 48' STORNFlLTER 10 510 MADE USING A FUMBLE COMING OR ECCEJTRC REDUCER. A5 REQUIRED. COUPLING 8Y 1'195003 CR EQUAL AND STA 2+70.50 CENTERLNE RN ELEV=29800 RNELEV=301.38 STRUCTURE ID STA 11+'185, 5.25' RT 8T 2 A 11186, 12.25' RT nn 0 OUT (N)=29340 N12 0 FINISH GRADE I0 OUT (N)-29370 E OR (S.SE,NE)=29370 IE IN e.71)-.292.50 IE OUT 294.00 I EX GROUND ALONG 801 EIE IN (LW =29 .43 4.88 3>00 E5 REQUIRED / Or CAR1L JDG ELEV=30 8 IE r95 LF 12' 0 0.50% / ADS N12 . C8 -TYPE 2 '48) FINISH GRADE ' ALIGNMENT ALANG IE OUT (p�29258 301.44' IE OUT(295.03 C8 STA 12 � 1 2Z 3n O' DT = MATERIAL 9IA 10+26, 1225 FIT TRACT 'A ALIGNMENT INLET PRE /1 C8 /8 -TWE 1 160 PVC STA 100+30, 9.25' LT u? 59 IF 8' /IDS N12 • . 5'81 ELEV=295.75s 3 s W)=29.1-32 ROA Elly=299.22 r A 70 LF 6 t 0 DI ROOF DRAIN STUB (LOT 7) 0 850% 0 850% R81 ELEV=299. I - - - PVC 12' E N (S 2918 IE OUT (WW)=29187-_--' ECCENTRIC RIDLUQM - - - i --- - MY CONTRACTOR WA ANTI -FLOTATION DICAST IE OUT (NE)=295.25 WA RI=/ .1 ,...., '1 12'0 ORM 505 MOIDt¢M CUT LNC 69 OUTLET STUB A NOfC> A1 R[G11R FIFE ORIENTATION MY: leo © . • 11 ... 111, %///.+ , 1E111111 OUTLET FMR --- r OSY CONIXACiO COMING `59LF8'0ADS N12 0 0.50% 7 IF 12' 0 DI 0 0.50% ,O we.' O ORMUZ. PMD MOM 02008 CONTECH Smrmwsar Sdutiona MOMS 1131:04 rs r e., PRECAST 48' MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL .. LUT10N5- mrotivmmw.lw.am ONearas I autemaa IPuw,srII0f./0aa 10881780 IOSTilas \- TANK CMPHEET I ` 0 DON SEE SHEET R3 FOR DEIN -- 44SA% LF8'/ADSNI2 0.502 PVCO I 3LF8'/ 26 IF 12" 0 P 0 0.50% L.X. GROUND MP) 1 3 LF 12'i0 PVC 0 0.08 FINISH GRADE (TYP) 8 LF 12' 0 PVC O 1.0% u)O t`!� ,9Rnn t.!1. �� .-N E. n ,., 10+00 11+00 DRAINAGE PROFILE ALONG TRACT 'A' HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20t 1 inch = 5ft MANHOLE STORMFILTER - PLAN VIEW O 1 MANHOLE STORMFILTER - SECTION VIEW O 1 02098 CONTECH Stammer Solutions TRTWMNRYNM00IP ILS P10.U7. • 8. 7" Ila 5.TOT.28 ..a 4AMOS SZ4s.°m. r °.OAATc MO MMUS MC mem main MOM w uTcwLI• Wi :7 i 11674:1 STORMWATER _�UTIONS_ a.wwnm..w.aa PRECAST 48' MANHOLE STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL ~NI 1 w memos I°oaeloa II I W0IlUfl CM1 IOIMwt.m IOevEAlw 12+00 312 308 304 300 296 292 CB 16 --TYPE 2 (48') STA 1+12.25, CENTERLINE RIY ELEV=299.73 STORMFILTER DETAILS O SCALE: NONE 300 296 29 2 3+00 2+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20t 10.0' MIN 1 inch = 5ft BACKFILL 10.0' MIN EXISTING GROUND r%510.!r�'S�� i.I"w i�": Sd�!xi ySl MilL91-0 WOK •,Attl Malt " g .'s N!Sf,! VoiLlniftirei metwepsfAek emmepitesstm WASHED ROCK 3/4' - 1 /2' (TMP) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE NONE CB g1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 5.5 LF 6'0SOUD ADS N12 0 0.0Z i5 ROAD/LOT 6 N TRENCH EV=288.5) IF nuT (w).,./ GENERAL NOTES CB 17 -TYPE 1 STA 2+0850, CENTERLINE IE 11:41.11.567429.3._ ai � G) INLET 1119IG TO BE 92!0(1® 5Y EWAN= AND PROVIDED SY CONTRACTOR P000457' MANN= 111015M173ER EQUIPPED WITH A DUAL DINKIER portOUTLET WHY STUB AND SAND COLLAR- MC11 DIAMETER OUTLET =DON MAY SE SEPARATED OUTLET 5115 AT MOLDN 0)T LINE 10 ACCOMODATE A 121NCH CURET P1re. CONNECTION 10 DOWNSTREAM MING (ROM ®I 10 510 MADE USING A FUMBLE COMING OR ECCEJTRC REDUCER. A5 REQUIRED. COUPLING 8Y 1'195003 CR EQUAL AND STA 2+70.50 CENTERLNE RN ELEV=29800 - STRUCTURE ID CD 04 8111 Fl Fv )q9 nn 0 OUT (N)=29340 N12 0 FINISH GRADE I0 OUT (N)-29370 E OR (S.SE,NE)=29370 0 INI(t.5)=293.40 _ -- - - -^ 3>00 E5 REQUIRED / Or CAR1L JDG 2 r95 LF 12' 0 0.50% / ADS N12 15 MEDIA TYPE (CSF, PERIM. 2FG) 21.» c.,1 --,:o vi w NN N RM ELEVATION 301.44' PRE DATN LG OREMA110N MATERIAL DIAMETER INLET PRE /1 C8 /8 -TWE 1 160 PVC 6' le u? 59 IF 8' /IDS N12 • . 5'81 ELEV=295.75s 3 s W)=29.1-32 r A 70 LF 6 t 0 DI ROOF DRAIN STUB (LOT 7) 0 850% 0 850% I EX IE IN (E -29337 lE IN S 29337 PVC 12' 2 ECCENTRIC RIDLUQM IMO 583 MY CONTRACTOR WA ANTI -FLOTATION DICAST WIDTH MGM OUTLET SAND COLUIR WA RI=/ .1 ,...., '1 12'0 ORM 505 MOIDt¢M CUT LNC 69 OUTLET STUB A NOfC> A1 R[G11R FIFE ORIENTATION MY: leo © . • 11 ... 111, %///.+ , 1E111111 OUTLET FMR ®® OSY CONIXACiO COMING `59LF8'0ADS N12 0 0.50% 7 IF 12' 0 DI 0 0.50% ,O we.' O ORMUZ. PMD MOM 02008 CONTECH Smrmwsar Sdutiona MOMS 1131:04 rs r e., PRECAST 48' MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL .. STORMFILTER DETAILS O SCALE: NONE 300 296 29 2 3+00 2+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20t 10.0' MIN 1 inch = 5ft BACKFILL 10.0' MIN EXISTING GROUND r%510.!r�'S�� i.I"w i�": Sd�!xi ySl MilL91-0 WOK •,Attl Malt " g .'s N!Sf,! VoiLlniftirei metwepsfAek emmepitesstm WASHED ROCK 3/4' - 1 /2' (TMP) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE NONE CB g1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 5.5 LF 6'0SOUD ADS N12 0 0.0Z i5 ROAD/LOT 6 N TRENCH EV=288.5) IF nuT (w).,./ GENERAL NOTES 1) 5TOWMLTER BY CONTECH ST0 .WATER SOLUTIONS: PORflMP, OR MOO) 546-4467; 5CAREORCUGM. 10 (677) 907-0670: 11NTRCUM. ►m (966> 7403316. 2) MLR CARTRIDGE(5)10 BE 5950N.ACIUATED AND sear -ammo. STANDARD DCTALL 5710W9 MAI5.89Y NIWBER Or CARTRIDGE. ACTUAL NU,1880 REQUIRED TO 5E SYS ON SITE FLANS OR IN DATA TA8LE SHOW. 3) PRECAST TAMACLE STRUCTURE TO BE CONSTRUCTED IN ACCORDANCE WTD1 ASI8A 0470. DETAO. REP7M:15 DBGN 1711547 ONLY. ACTUAL 0940107004110 CONFIGURATION OF STRUCTURE WILL DE SHOWN ON PRODUCTION 51101. DRAWING. 4) STRUCTURE AND ACC7939 CDVH610 MEET AA511I0 0-20 (DAD RATING. 5) FOR MON DROP CARTRIDGE. DROP =VIREO 6 I.& PORI C CM:IR/DM DROP REQUIRED 6 23. FOR 27 CARTRIDGE DROP REQUIRED 6 3.09. MINIMUM ANGL`. SEIWEEI INLET AND OUTLET 6 45'. G) INLET 1119IG TO BE 92!0(1® 5Y EWAN= AND PROVIDED SY CONTRACTOR P000457' MANN= 111015M173ER EQUIPPED WITH A DUAL DINKIER portOUTLET WHY STUB AND SAND COLLAR- MC11 DIAMETER OUTLET =DON MAY SE SEPARATED OUTLET 5115 AT MOLDN 0)T LINE 10 ACCOMODATE A 121NCH CURET P1re. CONNECTION 10 DOWNSTREAM MING (ROM ®I 10 510 MADE USING A FUMBLE COMING OR ECCEJTRC REDUCER. A5 REQUIRED. COUPLING 8Y 1'195003 CR EQUAL AND PROVIDED LT' CONIRALZ)R 7) FROMM MINIMUM CLEARANCE FOR MAINTENANCE A0=55. IF A 911ALDW3C 575710.16 =MED. CONTACT CON1ELT1 STORMWATER SOUDW)6 (OR OTHER ORIONS. 6) MD1-11OTA7)ON 1AL/5T TO EE SPEWED BY ENGINEER AND PROVIDED 1Y CONTRACTOR IF REQUIRED. 8ALJA5T TO EC SET AROUND DIE PERIMETER Or THE STRICTURE. 9) ALL STORMnL1E6 REQUIRE REGULAR MAINTENANCE. REM TO O7EATION AND MMNTHUNCE GLJIDHN6 FOR MORE INFORMATION. 3170 PRIME PRECAST MANHOLE STORMFILTER DATA AND COVER D) M1 STRUCTURE ID CD 04 WATERDUALITY PROW RATE (d•) 0.56 N12 0 PEAK FLOW RATE (< I de) 0.290 - RETURN Q PEAK now fYn1 2 3>00 E5 REQUIRED / Or CAR1L JDG 2 e C.NATROGE PLOW RATE 15 MEDIA TYPE (CSF, PERIM. 2FG) 21.» c.,1 --,:o vi w NN N RM ELEVATION 301.44' PRE DATN LG OREMA110N MATERIAL DIAMETER INLET PRE /1 294.98 160 PVC 6' 1,2 MANHOLE STORMFILTER - TOP VIEW O O UTLET T 5IIJD 292.35 97 PVC 12' 2 ECCENTRIC RIDLUQM IMO 583 MY CONTRACTOR WA ANTI -FLOTATION DICAST WIDTH MGM OUTLET SAND COLUIR WA RI=/ .1 ,...., '1 12'0 ORM 505 MOIDt¢M CUT LNC 69 OUTLET STUB A NOfC> A1 R[G11R FIFE ORIENTATION MY: leo © . • 11 ... 111, %///.+ , 1E111111 OUTLET FMR ®® OSY CONIXACiO COMING _�OW DMIAST GROMm OM NOTE W ABY GQN(R:GRiR M •Y.111GZaClf ftreffmrUS. WENT No. 5.112240. MANHOLE STORMFILTER - OUTLET DETAIL O Ilm a wa"'b 3458 O ORMUZ. PMD MOM 02008 CONTECH Smrmwsar Sdutiona MOMS 1131:04 ft\IIlwLII• 171 • •'r' STORMWATER PRECAST 48' MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL 17.171. 2 a LUT10N5- mrotivmmw.lw.am ONearas I autemaa IPuw,srII0f./0aa 10881780 IOSTilas STORMFILTER DETAILS O SCALE: NONE 300 296 29 2 3+00 2+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20t 10.0' MIN 1 inch = 5ft BACKFILL 10.0' MIN EXISTING GROUND r%510.!r�'S�� i.I"w i�": Sd�!xi ySl MilL91-0 WOK •,Attl Malt " g .'s N!Sf,! VoiLlniftirei metwepsfAek emmepitesstm WASHED ROCK 3/4' - 1 /2' (TMP) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE NONE CB g1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 5.5 LF 6'0SOUD ADS N12 0 0.0Z i5 ROAD/LOT 6 N TRENCH EV=288.5) IF nuT (w).,./ Q 5 'VT errrC i1FILTRATIID 8D [:>. N12 0 GROUND - - FINISH GRADEr - _) N. I I c.,1 --,:o vi w NN N o N 100+50 101+00 PERF. 0.0% PVT. ACCESS ROAD INFILTRATION TRENCH PROFILE 304 300 296 292 288 284 280 1+00 WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC (TMP) 6' RIGID PERFORATED PVC PIPE LAID LEVEL (TMP) VANED GRATE OIL COLLECTION CATCH BASIN P -r TO INFILTRATION TRENCH SEDIMENT NT COLLECTION ROAD OIL/WATER SEPARATOR CB O SCALE: NONE HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 �h_nc 20t. VERTICAL GRAPHIC SCALE 5 _ 2.5 0 2.5 5 REFERENCE SHEET NO. DR2 SHEET 7 OF 15 SHEETS CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 W W Ct CL C) C O Co co w o) up H d O LL 1 O c Z Q J W O 0 /0 L• cc L O IL Q Z Q O CC CI) 0 vJ w 0 w N .. O 14 O n1 Z 0 Q C S DESIGNED BY: Z x 0. x 0 CHECKED BY: REVISION DESCRIPTION ea w w ALL c m w 0 0 z PROVIDE CONFINED SPACE SIGN PER OSHA REQUIREMENT (TYP. ALL RISERS) ROUND MANHOLE COVER MARKED DRAIN' WITH LOCKING BOLTS ELBOW RESTRICTOR, SEE DETAIL FINISH GRADE t0 18' DIA CMP FABRICATED TEE AND RISER (ALUMINUM) 3'X0.90' ALUMINUM PIPE SUPPORT STRAP SPACED AT 3.0'. ANCHOR TO WALL WITH 96' STAINLESS ANCHOR BOLT 1.0' MIN OUTLET PIPE CMP COUPUNG J IE (OUT)= 294.00J 12' REMOVABLE SECTION OF RISER TO BE ATTACHED WITH GASKETED BAND RESTRICTOR PLATE 1.05* ORIFICE EL= 291.50 2.0' MIN CLEARANCE TO ANY PORTION OF FROP-T INCLUDING ELBOWS OUTLET TO CB {6 ELBOW RESTRICTOR SEE DETAIL 2.0' MIN • • N 100 YR MAX W.S. ELEV= 298.50 HANDHOLDS, STEPS OR LADDER MEETING ALL REQUIREMENTS OF KING COUNTY STD. FIGURE 7-006 UFT HANDLE EXTEND TO MH COVER SHEAR GATE WITH CONTROL ROD FOR CLEANOUT/DRAIN PER KING COUNTY STD. FIGURE 7-026 INLET PIPE 6 REMOVABLE WATERTIGHT COUPUNG OR FLANGE SECTION NTS 6' MAX PLATE WELDED TO ELBOW WITH 1.15' ORIFICE, ELEV= 294.75 ELBOW RESTRICTOR DETAIL NTS CB 15, TYPE 2-54' DIA PLAN VIEW NTS IE (IN)= 292.50 INFLOW FROM DETENTION TANK NOTES: LOCATE LADDER & COVER TO PROVIDE 2.0' CLEARANCE FROM LADDER TO TEE AND PIPES. CB#5TYPE 2-54' FLOW CONTROL STRUCTURE DETAIL O SCALE NONE . 8.0' DIA BULKHEAD 115.0' 15.0' 5 0 20.0' 36' RISER 50.0' 1 CB 15 TYPE 2-54--' FINISH GRADE CB /5 TYPE 2-54' FLOW CONTROL STRUCTURE SEE DETAIL THIS SHEET OUTLET TO CB 16 BANDS (TYP) J PLAN NTS 115.0' 8.0' DIA BULKHEAD CB /4 TYPE 2-48' 8.0' DIA CMP DETENTION TANK PER CONTECH 36' ACCESS RISERS WITH LADDER (TYP) MEETING ALL REQUIREMENTS OF KING COUNTY STD. FIGURE 7-006_\ DESIGN MWSE=298.50 8.0' DIA CMP DETENTION TANK TOP ELEV=299.00 BOTTOM ELEV=291.00 - - - - 6' FREEBOARD- - -J = o STORAGE DEPTH III -3 LF 12* PVC 6' SEDIMENT STORAGE 36' ACCESS RISERS PVT. ACCESS ROAD FINISH GRADE SEE PG1 FOR ROADWAY SECTIONS COMPACTED BACKFILL 3/4- - 1 1/2' WASHED ROCK BACKFILL FOR DRAINS 2.0' MIN SECTION A—A NTS TANK TOP ELEV=299.00 8.0' DIA CMP TANK TANK BOTTOM ELL -V=291.00 2.0' MIN SECTION B—B NTS 0 CC COPfqft CB #4 TYPE 2-48- STORMFILTER SEE DETAIL ON SHEET DR1 -8 LF 12' PVC INLET FROM " NOTES: 1. ALL METAL PARTS CORROSION RESISTANT. STEEL PARTS GALVANIZED AND ASPHALT COATED (TREATMENT 1 OR Bt I ItN). 2. IF THE CONTRACTOR SEEKS TO USE A DIFFERENT PRODUCT THAN CONTECH, CONTRACTOR MUST SUBMIT A REVISION TO CITY OF TUKWILA PUBLIC WORKS FOR REVIEW AND APPROVAL DETENTION TANK DETAIL O SCALE NONE 110 REFERENCE SHEET NO. DR3 SHEET 8 OF SHEETS w L.1.1 O - (!Mt:) Cn wo O •= W 0-9 zcn 0 Q W Q Z z W O W W 000 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 w N 1-1 O M 0 z 0 0 CI- a S S DESIGNED BY: m 0 0 CHECKED BY: z d CV 0 z 144TH_STA 505+43.69= RD. STA 10+00 WRAP WAS -IED ROCK ENTIRELY WITH FILTER FABRIC EXISTING GROUND ,m»7 6w.g 0 CC _ so i1 -knew s sa•".ce I � w rit 6106+ 11 ... 15.0' PRIVATE DRAINAGE EASEMENT 10.0' SIDEWAL) & • UTILITY EASEMENT LOT 9 :(7,037 SQ. FT.) C8 212 -TYPE 1 STA40+40, 6.0' LT 6,s" WAOUD LOCKIN9.IJD---______ 175 5 LF 8' O PVC 0 0.507' II f y i ,crKtmom:" -0'o1 603•33 "n "6 REFERENCE SHEET NO. 4' RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) WASHED ROCK 3/4' - 1 1/2' TRENCH X-SECT1ON NTS • 4I EX. I,USE TO R7t1AIN 1 a 0.7' tti LOT 8 (6,621 SQ. FT.) a»t,. Iss &air. link fence - is 5.3' west 00 0 .,,y I o I �r C//11 -TYPE 1 °STA 12+18.25, 6.0' L; �$JA 99+94, 1.0' RT.' W7 0CCKIING }ID 61 LF 8'0PVC ®14.0% c / % \ 5 0.2' east a �' aw z\. a 0-oQ W , VK,1 • ; 3•, 3.6p,6. r c HOUSE :pest edge concrete is 1.1' west aLOT 2 " }w est edge concrete (6,903 SQ._ Fr.) 14 is 1.1' west yE P _ NV 'N`t- f L`��'� 10.5'LF6'0PV01 ° ROOF DRAIN STUB"? O 1:0% MIN. 3 ("xi') �`° 10.5 LF 6' 4 PVC ROOF DRAIN STUB 10 1.0% MIN. I (� "*) _•` ,. Ci E ri 3 312 308,. U 3040 CC0 300 296 29 10.0' SIDEWALK & UTIUTYASEMENT 43W 8230' 6230' Iv CB fIl-TYPE 1 ;,,�» taw kx, 0.3 no STA 99+30, 1.0' RT / W/SOUD LOCKING UD z 17.5LF6'OPVC t ROOF DRAIN STUB 0 1.0% MIN. (SEE ,») 8 ,10+00 11+00 . 312 308 304 300 296 312 308 304 300 296 292 292 I I CONNECT TO LOT ROOF DRAIN STUB 2' X 10' LEVEL TRENCH W/PERFORATED PIPE, TO BE INSTALLED AT THE TIME OF BUILDING PERMIT DR4 SHEET 9 OF 15 SHEETS cn z< Q I- Q a'Z W Q 0 WQ ZCC 0 a CC u- 0- PLAN VIEW OF ROOF NTS CATCH BASIN OR AREA DRAIN WITH SOUD UD PERFORATED T1GHTLINE STUB OUT O SCALE: NONE NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET UT1 & UT2 FOR SEVER AND WATER PLANS. 5. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 6. ALL UTIUTIES TO BE PLACED UNDERGROUND. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 201. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 ST no -s STA 99+ 1.0' RT CB #12 -TWE 1 STA 10+40, 8.0' LT j11 -TWE 1 TA 99+94, 1.0' RT CB g11 -TYPE 1 STA 12+18.25, 6.0' LT STA 1' 15.50, 6.85' RT 15 IE IN (5)=296.23 EX. GRO 0 ALONG RIM E1.EV=300.99 IE IN (E)=297.25 RIM 3 IE IN -299.00 N)=296.80 IE OUT (,1,1W0=296.23 TRACT A �,, e.,1 _, , TRACT 'A' ALIGN is GWENT T IE OUT (N)=297.111 IE _ 1:I. , (W)=298.10 --- FINISH GRADE -- I I In - .--. ' 01 WATER MAIN IU u I 61 LF = MIN. 1.0' T I - - t.X GNOUND (11ft') _ 5.5 LF 8'0 PVC 0.505 (TW) m 3, L- 26 8.1.1.V..,LI. i OUND (1Y1') 1 r FINISH GRADE (TW) .1.51N•� N� A g nd. ,10+00 11+00 . 312 308 304 300 296 312 308 304 300 296 292 292 I I CONNECT TO LOT ROOF DRAIN STUB 2' X 10' LEVEL TRENCH W/PERFORATED PIPE, TO BE INSTALLED AT THE TIME OF BUILDING PERMIT DR4 SHEET 9 OF 15 SHEETS cn z< Q I- Q a'Z W Q 0 WQ ZCC 0 a CC u- 0- PLAN VIEW OF ROOF NTS CATCH BASIN OR AREA DRAIN WITH SOUD UD PERFORATED T1GHTLINE STUB OUT O SCALE: NONE NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET UT1 & UT2 FOR SEVER AND WATER PLANS. 5. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 6. ALL UTIUTIES TO BE PLACED UNDERGROUND. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 201. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 ST no -s STA 99+ 1.0' RT j11 -TWE 1 TA 99+94, 1.0' RT RIM ELEV= IE IN (N,S,'-300.50 15 '11,1 1 ELEV=300.99 IN (E)=297.86 1 "e O, '1 •1 --- FINISH GRADE 1111 I ' 01 WATER MAIN - PVC 4.0% 1 L• I 61 LF = MIN. 1.0' ANCE EXXGROUND - - t.X GNOUND (11ft') _ [ FINISH GRADE - (TW) m 3, ov N r. N ei v� 99+00 DRAINAGE PROFILE 100+00 312 308 304 300 296 292 101+00 u‘,D -oo3 ♦ss TO BE CONNECTED TO PERFORATED 11GHTUNE STUB OUT VERTICAL GRAPHIC SCALE 5 2.5 0 2.5 5 1 inch = 5ft HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20t w 0 w y 0 rq 0 cn m c� w g 0 0 CHECKED BY: a CCC cc a PhonH D:\Working\R09400 — Foster Short Plot\CADD\DrowIngs\R09400—P5—LD7.dwg Loyout No +00 1 NE1/4, SEC. 22—T23N—R4E, W.M. 506+00 \ Sos+oo S. 144T1-1 STREET 504+00 N 0 1' J i �a ' - - -.-sL' - $:: 'r~ — — 4 - r3C4. n,J___ .--- n ., .cf�o` 'i ,. -49- \ �t t� I, I X500' I I I earl i 15.0' PRIVATE DRAINAGE EASEMENT \ 1O3.SD' 587,19'1O'E I 10350' LOT9 in.037 SQ. FT.) 10.0' SIDEWALK & UTIUTY EASEMENT 10.0' SIDEWALK & UT1UTY EASEMENT LOT 8 (6,623 SQ. FT.) \ Se7419117E \ a \ �\ \ \ I \ \ \ \I CP LOT 1 (17,453 SQ. FT.) LOT 7 (6,598 5Q. FT.) \ • 58751+43'E ` 4414' ,I LOT 2 (6,903 SQ. FT.) 1` \ • c\ LOT 6 (6,629 5Q. FT.) / LOT 3 (7,597 SQ. FT.) / i N CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 HORIZONTAL GRAPHIC SCALE' 20 10 0 10 20 1 inch = 201. LEGEND PROPERTY UNE - EASEMENT — ROAD CENTERUNE RIGHT-OF-WAY/ADJACENT PROPERTY UNE {i. EX. DECIDUOUS TREE ty EX. EVERGREEN TREE X TREE TO BE REMOVED O TREE TO BE SAVED //* 1' DIA. X 8' LONG REINFORCED BLACK• -...11114111111111111$41 ,ri/100 RUBBER HOSE OR APPROVED EQUAL DO NOT PLACE WOOD CHIPS AGAINST TRUNK OR OVER CROWN OF PLANTS 12 GUAGE GALV. WIRE OR APPROVED SUBSTITUTE TOP OF ROOT BALL TO BE SET AT LEVEL OF THE SURROUNDING SOIL 3' EARTH SAUCER 2i(2' WOOD STAKE OR #6 REBAR PLANT SCHEDULE SYMBOL BOTANICAL NAME BACKFILL WITH 50% COMPOST/ 50% NATIVE SOIL AND FERTILIZER. SEE NOTE 4 TREE PLANTING DETAIL NTS EX. GROUND 3707° - REMOVE BURLAP FROM TOP 1/3 OF ROOT BALL ADD 3' WATERING RING COMMON NAME CITY SIZE REMARKS PRUNUS CERASFERA PURPLE -LEAFED PLUM 9 2' CAL. (MIN.) B & B 'THUNDERCLOUD' LANDSCAPE NOTES: 1. CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATING WORK WITH OTHER SITE IMPROVEMENTS AND CONDITIONS PRIOR TO STARTING LANDSCAPE WORK. 2. CONTRACTOR SHALL USE CAUTION WHILE EXCAVATING TO AVOID DAMAGE TO UTILITIES. ADVISE OWNER IMMEDIATELY IF UTILITIES ARE DISTURBED. CALL LOCATION SERVICE PHONE 1-800-424-5555. 3. CONTRACTOR SHALL BE RESPONSIBLE FOR COMPUTING QUANTITIES OF COMPOST AND MULCH WHERE SHOWN ON THE PLAN. 4. ALL TREES SHALL BE FERMI 17FI) WITH AGRO TRANSPLANT FERTILIZER 4-2-2 PER MANUFACTURERS SPECIFICATIONS. 5. AU. PLANT MATERIAL SHALL CONFORM TO AMERICAN STANDARDS FOR NURSERY STOCK, LATEST EDITION. REPLACEMENTS SHALL BE MADE AT ONCE. 6. ALL PLANT MATERIAL FURNISHED SHALL BE HEALTHY REPRESENTATIVES, TYPICAL OF THEIR SPECIES OR VARIETY AND SHALL HAVE A NORMAL GROWTH HABIT. THEY SHALL BE FULL, WELL BRANCHED, WELL PROPORTIONED AND HAVE A VIGOROUS ROOT SYSTEM, AND FREE OF DISEASE, INJURY, INSECTS, DECAY, HARMFUL DEFECTS, AND WEED FREE. SUBSTITUTIONS SHALL NOT BE MADE WITHOUT THE AUTHORIZATION OF THE OWNER OR OWNERS REPRESENTATIVE 7. NO PERMANENT IRRIGATION SYSTEM IS PROPOSED. CONTRACTOR SHALL MAINTAIN AND WATER TREES FOR TWO YEARS AFTER FINAL INSPECTION AND ACCEPTANCE BY THE OWNER OR OWNERS REPRESENTATIVE. REFERENCE SHEET NO. LD1 SHEET 10 OF 15 SHEETS -J za_ Q O~ Z P J 1— W W CC a - W Q W (n CC ("1 I- z LJ uj .. o C) N ti O I. - M a�z o8 O z = � a z i DESIGNED BY: 0 c\2 CHECKED BY: CD 0 a z • 0 6 x E M 6.;;f1 15.0' PRIVATE DRAINAGE EASEMENT 8 CSL 505+00 S. 144TH STREET 504+00 0 3 N C b d N 0 I 1. b. 1.1 1.x x ., 1. 1., l.. .4 rid1., 0.4 1.. l.+ .4 1.5 b.) 1.4 1.7 ., 1., b. b., 1.' 1.7 1., 1.. t. 1 ,1.,1.,.' +1.41. ell1.2 t. .., , 1.x 1. 1., .4 s., 1 1.2 1.I l., 1.5 1.4 glii, 1.4 1..` a.. b., 1., L4Ilyt 1.11.7 1: ii 1.3 la a., b , is It 1.. 1.6 1., , 1.1 1 b., 1.4 1., O.0 1.1 l 1.0 1., b., 10 1.,1 1.01.' 1I 1 1.. 1 1 1.0 1. 1.4 / . 1.. llx 1.7 1. 1.4 .4 1., 11 1.4 1. 1., ,, 1.0 11 /.4 1. 1.2 - ., 1.o 1.4 1. 1.2 i., 1.4 1I2 1.5 1. 1.2 /, .4 1., 11 1.4 1.f 1.2 1 1.1 Lx 1.7 1.4 1.o , 1.2 1.11., 1.4 1.2 ., 1.011., 1.4 bw 1.2 .41., b1., 1.4 14.4 1a l.+ , D., 1 1.3 i , 1.5 4Is, 1 r l., b., 1.4 l., N \ \ 1.0 1.7 1.r.4 1.4 1., 1 ELECTRIC SERVICE CABINET (PSL LIGHTS) EX. HOUSE 10.0' SIDEWALK & UTILITY EASEMENT N LA, '4.1 Q W >cn < W z mow rx 1.x 1.4 1.5 1., 1., .1 .4 U .1 1.5 1.1 1.0 1.+ 6.7 4 b., D., 1.0 1.1 1.1 1.2 b.x 1.41.41.41., 110 1.44., 1.4 1.2 t., la l., l., 1.+ '16.7 Lala 4. ., 1, `.a 1._ 1._5_1.2 1.2 De 1.7 n.. 1.1 1., 1., 1.4 1., 1.140+504 1.4 1.+ 17-171 ZT`4. 11 Y00+00q1 1.4 1.5 1.4 1.4 1.1 In 1.0 1.+ l.o D., s is In n., 1.+ 1.0 1.0 la L1 ., 1.2 5.2 }., *., ft.p%nY n., 1 , rom 1 1 LOT 1 • (17,453 SQ. FT.) LOT 2 (6,903 SQ. FT.) PSL FSINGLE AL REBDBICE LOT 6 (6,629 SQ. FT.) • PROPOSED RESDENCE LOT 5 (6,578 SQ. FT.) -"L 3 a MOLE PROPOSED R B10E LOT 4 (6,731 SQ. FT.) • MIL"! ER LOT 3 (7,597 SQ. FT.) CALCULATION SUMMARY LABEL DESCRIPTION CALC. TYPE UNITS AVG MAX MIN AVG/MIN MAX/MIN CALCPTS CSL ILLUMINANCE Fe 0.94 2.60 0.20 4.70 13.00 87 8400 0.810 LUMINAIRE SCHEDULE (AREA LIGHTS) SYMBOL DESCRIPTION QTY LABEL WATTS LUMENS LLF -® GE 44-400 COBRA MH=30 100M1PS 1 CSL 122 10667 0.810 HE GE TSP BOX 0=18 70WHPS 4 PSL 87 8400 0.810 NOTES: ILLUMINANCE CALCULATION SUMMARY: AVERAGE FC=0.94, MAXIMUM FC=2.6, MINIMUM FC=0.2 RATIOS: AVE/MIN=4.7, MAX/MIN=13 LUMINAIRE SCHEDULE 1 TYPE CSL CITY STREET UGHT, COBRA HEAD, MOUNTING HT 30 FT. HPS 100W LAMP, TYPE III DISTRIBUTION GE MODEL M-400, 122W, 10667 LUMENS, LLF 0.810 1 POLE, ROUND ALUMINUM, 8 FOOT ARM, FOR TYPE CSL STREET LIGHT 4 TYPE PSL: PRIVATE STREET LIGHT, BOX, MOUNTING HT 18 FT. HPS 70W LAMP, TYPE III DISTRIBUTION GE MODEL TSP, 87W, 6400 LUMENS, LLF 0.810 4 POLE, ROUND ALUMINUM, 14 INCH ARM, FOR TYPE PSL STREET UGHT ELECTRIC SERVICE PER CITY OF TUKWILA STANDARD RS -22: SERVICE CABINET CTTY STREET UGHT: PER CITY OF TUKWILA STANDARD RS -20: STREET UGHT POLE POINT -OF -CONTACT FOR CITY STREET UGHT COORDINATION: SEATTLE CITY UGHT ELECTRICAL SERVICES COMMERCIAL REP (TOSH SHARP, PH: 386-1551) POINT OF CONTACT FOR ELECTRIC SERVICE FOR PRIVATE STREET UGHTS: SEATTLE CITY LIGHT ELECTRICAL SERVICES COMMERCIAL REP (TOSH SHARP, PH: 386-1551) LEGEND • PROPERTY UNE EASEMENT RIGHT OF WAY CENTERUNE RIGHT OF WAY/ADJACENT PROPERTY UNE CORNER SET PROPOSED STRUCTURE (APPROX. LOCATION) HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20L 1;Uc)-ocrs REFERENCE SHEET NO. LP1 SHEET 11 OF 15 SHEETS CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1- w LL ct 133 CL _ C37 CdQ 0 C) Ct LL Cr) - H 'rt STREET LIGHTING PLAN 0 2 8 Ni T. RICE PE, LC DESIGNED BY: T. RICE PE, LC m 0 CHECKED BY: z O ce c 3 LI M C1 Ct ma O 2 W S0 m 0 Z 9871"1O'2'E 310.93' LOT 2 (6,903 SQ. FT.) FFE=306.0 STA 99+18 4:5• - LOT 1 (17,453 SQ. FT.) STA 99+25 W U aEx T U11Lm EASEMENT DETENTION li1M( 207 LF e• PVC 0 0.502 , i il 10 DD i STA 10+33 L=20.0' 19=7.5' 5.UTILIjY I A 1-48' i. 12+1 , 1.14' LT 1 STA - - -3C•.00- T=181' D=7.0' ISTA 99+52 L=22.5' U•t v0 LF 6' PVC SIDE SS 013.02 12+00 EX GARAGE TO BE 0EMOUSHED - 10.0' SIDEWALK & -' UTILITY EA&AIENT 10.0' SIDEWALK & UTILITY EASEMENT EX94ED TO BE DDAOLISHED / LOT 9 (7,037 SQ. FT.) I X2977 -- r - LOT 8 (6.623 5Q. FT.) FFE=296.0 Mar 24, 2011 — 3:52pm 305 EX 8' SEWER MAW 6800' 736 c'c' / 64.00' / 5.0 STA 12+00\ 1=22.5' /) 0=7.5. 51.5 LF 6' PVC/ SIDE S5 0,20%29 I"* 7 A _GO LOT 3 (7,597 5Q. FT.) FFE=308.0 NO1°CB'Sif 12200'--- LOT 4 (6,731 SQ. FT.) FFE=304.0 PVL RD. STA 12+19.04= HAMMERHEAD STA 100+00 3C2.30-- N019095'E 18 J \ 4 102.00' Of- -UG"004- l J I _ 1 -10.0' SIDEWALK & I U1ILfTY EASI]IENT - - LOT 5 (6,578 SQ. FT.) FFE=299.00 ISTA 100+42 L=20.5' 901°08'WE---- I --- Ii'.i'U >6Z- - - Iw &o' ware I / EASEMENT LOT 7 (6,598 SQ. FT.) FFE=2955. 7 / SEWER PLAN i /$ 25.i Il PRIVATE / DRAINAGE EASEILRE `77.13' ) 311.13' zC+ I✓y 305 is o. CN1 300 295 • EX: S91H A7 ]..:: STA 10+04, 1.14' LT RIM=299.60' • EL iE (8'W)=28&90 X. IE TENS)=28&80 :10 (8')=298.90 FINISH GRADE 81.0N0' ; TRACT'A' ALIGNMENT APPROX Ex GAS:LINE • 290 ; ---- 285 • SS STUB::: STA' 0+33 20 (8)W)-289.14, EX GROUNti RANG • TRAC "A' ALIGNMENT 102.00' rCG Z6Z- - - 85 LE -6' PVC SIDE SS 0 1.02 STA 100+75 -LOT 6 9=25' O (6.629 SQ. FT.)290 FFE-292.0 266:=0 594)4 /f, TYPE 1-48' STA 12+14 1.14'1.T RIM=300.97 (8'1)=290.04:; - .. 8 (6'E.W.S)-290.14 /256 cc /mar - 305 PROPOSEDWAIER MAIM --- --- `- 1-207LF9'PVC O0.502; STA 11+70 IE (61)-289.83 SS S1UBi. .. .... I ., STA 12+00 -- -- 300 10+00 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 11+00 SEWER PROFILE HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 2Qt 1 inch = 5ft 12+00 285 SAWCUT EXISTING ASPHALT PAVEMENT Z -s N - ASPHALT CONCRETE OR BITUMINOUS PLANT MIX REPLACEMENT PATCH 1502 OF EXISDNG DEPTH - SAWCUT VICINITY MAP NTS REFERENCE SHEET NO. UT1 SHEET 12 OF 15 SHEETS IftreArketi '.0. "odv'® 3',"° y' • °po `,..' ' , Nnw9k /v; of t t tittesi - - '0.415,r "e''e(4 i::i%:avcF'% LEGAL DESCRIPTION C CO c "-'LL- - Z W O u- Z 0 1CL L X W LL Q Z Q LTr^1 ^1 VJ 0_ LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED 0 VOLUME 11 OF PLATS, PAGE(S) 31, RECORDS OF KING COUNTY, WASHINGTON. SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENIED CENTERLINE OF SOUTH 1441H STREET NORTH 874910' WEST BETWEEN 421413 AVE SOUTH AND 46TH AVE SOUTH. OWNER INFORMATION TL INVESTMENT GROUP, LLC 4055 - S 148111 SIHtt] TUKWILA. WA 98168 (206) 245-5755 CONTACT: KHAN HU'INH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT Et POINT NAME 93V-902: 0.5' COPPER PIN 811)1 PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 1441H STREET AND 461H AVE SOUTH; ELEVATICN = 287.900 FEET NAVD88 NOTES: 1. CONTRACTOR SHALL FED VERIFY ALL GRADES PRIOR TO CONSTRUCTION. W 5(j w0 JW >W w 0 w w N C NATIVE SUBBASE li.a4 moi.; RMr esters• R R)tutCf6' TYPICAL PATCH FOR FLEXIBLE PAVEMEIT NOTES 1. ALL WORK TO CONFORM TO THE CURRENT WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPALCONSTRUCIION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REQUIRED ON ALL PAVEMENT PATCHING AND OVERLAYS 3, CONTROLLED DENSITY F81 IN PLACE OF CRUSHED ROCK MATERIAL MAY BE REQUIRED IN CASES OF RECENT PAVEMENT OVERLAY, OR AS DIRECTED BY 0TY ENGINEER. EXISTING BASE 5/B' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE CITY PAVEMENT RESTORATION DETAIL PER CITY OF 1UKWLA STANDARD DWG RS -03 SCALE NONE --C)n 2 o 8 cr Q _ 0. DESIGNED BY: Q 0. CHECKED BY: = 0. z cc a. REVISION DESCRIPTION w m 0 z Ing V109400 — Foster Short Plat\CADD\Drawings\R09400—PS—UT2.dwg Layout Name: loyout1 S Mar 24. 2011 — 3:53pm PhanH _---z—; EX 10' DI WATER MAIN REMOVE/REPLACE CURB, GUTTER AND SIDEWALK h. )oI T 310•97 LOT 2 (6,903 SQ. FT.) �1 EX WATER METER �' , .1........'..,.,,..,...,-..a TO BE LOWERED TO 1 FINISH GRADE 1 LOT 1 (17,453 SQ. FT.) LOT 3 (7,597 SQ. FT.) INSTALL W WATER METERS AND SERVICE UNES NO1V8WE —1O 1C;— 12207 — — PVT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 --- LOT4 — (6,731 SQ. FT.) INSTALL +' WATER METER AND SERVICE UNE INSTALL? WATER METER 1 ,.•••.• -AND UNE \� , _206 LF 8' D1 CL 52 - SIDEWALK '-- WATER VAIN - �` UiIUT_EEASEMENT ■I//11111nIZ ,o852'E 16937f 302.10-" 99 NOIVITSZE 102.011 6 • N / 11'-00 TRACT A' \ PVT. (8.ACO28 SQC SS 8. . .) FOO_ NO STALL )' WATER METER AND SERVICE UNE 2 4 8 8 PAVEMENT RESTORATION PER CITY OF TUKWIJ STANDARD DWG RS -03 WATERMAIN FITTING DATA 0 STA 9+74 (FIELD VERIFY), 11.14' RT INSTALL WET TAP WITH 1-10'x8' TAPPING"TEE (MJxFL) 1-8' GATE VALVE (FLAAJ) 1 -CONCRETE THRUST BLOCK ® STA 11+80, 11.14' LT 1 -FIRE HYD. ASSY (MJ) 1-8'x8' TEE (MJxFL) 1-6' GATE VALVE (Fl.1d1J) 1-8'x4' REDUCER (F141J) 1-4' GATE VALVE (FLAIL) 8 -LF 6' D.I. 1 -CONCRETE THRUST BLOCK 0 STA 12+32, 11.14' LT 1-4' 0.1. CAP (M.0 1-Y PERMANENT BLOW OFF ASSY 1-4W VERT. CROSS (U.M44) FOR POLY PIGGING 1 -CONCRETE THRUST BLOCK CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 305 . 290 INSTALL )1' WATER dETER AND SERVICE UNE — ta0' SIDEWALK AL-"- MAY L=U1WTY EASEMENT EX GARAGE TO BE DEMOUSHED 10.0' SIDEWALK & UTILITY EASEMENT r ROW LOT 9 (7,037 SQ. FT.) EX. 8' SEWER MAN EX SHED TO BE DEMOLISHED E tCZz INSTALL W WATER METER AND SERVICE UNE LOT 8 (6,623 SQ. FT.) 51 LF 4' 01 CL 52 WATER MAN / .,•"" UTBJTY EASEMENT / 10.0' 8 / / — INSTALL )i' WATER METER AND SERVICE UNE 10.0' SIDEWALK 4 °C).65Z—— UTRJTY EASEI4ENI LOT 5 (6,578 5Q. FT.) i 00-7EZ— — --- NOI VEr TE 68.m / LOT 7 (6,598 SQ. FT.) /// / 64.07 / _ N01°OB'5�'E WATER MAIN PLAN PRIVATE2.6 /DRRAINAINA GE / EASEIEJLT _77.3' I 31113 102.07 CesZ67.— — — — 'IrTALL W WATER METER _ \ AND SERVICE UNE / / / 786.00— / 520 / 102.00' —LOT 6 (6,629 SQ. FT.) ::: APPROX EX GAS UNE (CONTRACTOR TO AEU) VERIFY) ) — APPRDX EX TV CONDUR LINE' (EONTAC I3R To:Flao vain): 205 LF 8' D1 0. 52 WATER MARL 51 LF4'p! 01.52 WATER MAN 305 305 H300 C> 7 295 • FOR REFERENCE ONLY NOT FOR CONSTRUCTION 11+00 WATER MAIN PROFILE HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20G 1 inch = 51L 12+00 NOTES: 290 EXOSTNG ASPHALT PAVEMENT 1. CONTRACTOR 9RAU. FlE1D VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 2, CONTRACTOR SHALL RESTORE CONSTRUCTION AREAS TO EXISTING OR BETTER CONDITIONS \ a 1 VICINITY MAP NTS LEGAL DESCRIPTION i REFERENCE SHEET NO. UT2 SHEET 13 OF. 15 SHEETS LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS ACCCRDING TO THE PLAT THEREOF RECORDED I VOLUME 11 OF PLATS, PAGE(S) 31, RECORDS OF KING COUNTY, WASHINGTON. SITUATE IN 111E COUNTY OF KING STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERLNE OF SOUTH 1441H STREET NORTH 874910' WEST BETWEEN 42ND AVE SOUTH AND 46111 AVE SOUTH. OWNER INFORMATION TL NVES111ENT GROUP, LLC 4055 - S 14811I STREET TUKWILA, WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID: 815: POINT NAME 93V-902; 0.5' COPPER PIN WITH PUNCH SET N CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 1441H STREET AND 46TH AVE SOUTH: ELEVATICN = 287.900 FEET NAVD88 Z �O VJ 12W X CCW Z cQ Z Q cc Z W -I Q ,L E 1 g a Ov 2 di 3 O ` N E A'°N G- 010 Q o� – SAWCUT - ASPHALT CONCRETE 01 BITUMINOUS PLANT LOX REPLACEMENT PATCH 1505 OF EXISTING DEPTH - SAWCUT NATIVE SUBBASE 4,051;1411•104?) .r. ?, 1/41 air-0We* WWW‘ ° �R� W `Rleme. , Of! Rif 'ROUT 33ti TYPICAL PATCH FOR F EXIB E PAVBAENT NOTES 1. ALL WORK TO CONFORM TO THE CURRENT WEDOT/APWA STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPAL CONSTRUCTION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REQUIRED ON ALL PAVEMENT PATCHING AND OVERLAYS. S CONTROLLED DENSITY FILL IN PLACE OF CRUSHED ROOK MATERIAL MAY BE REQUIRED IN CASES OF RECENT PAVEMENT OVERLAY. OR AS DIRECTED BY CITY ENGINEER. EXISTING BASE 5/8' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE CITY PAVEMENT RESTORATION DETAIL PER CITY OF TUKWILA STANDARD DWG RS -03 SCALE NONE Wr3 < ~ 0 0 0 0 z o8 cc Q Q - - = S S DESIGNED BY: co 3 0 CHECKED BY: z a 2 2 Z 0 cc 2 Ii 9- m W 0 z l/ Layout Noma, Loyoutl 3 PLAN - FRABE 6 COVER BOTTOM VIEW OF COVER NOTES:, 1. MACHINE BEARING FACES OF COVER AND CASE TO INSURE POSMVE FTT. 2 CASTINGS SHALL BE GRAY IRON, A.S.T.M. DESIGNATION P ICITT DOC - A43, CLASS 40, AND SRR.L CONFORM FURTHER TO APPLICABLE SECTION OF THESE SPECIFICATIONS SECTION • FRAME 6 COVER 3. MONUMENTS ARE REWIRED AT STREET EITERSECTIONS AND MUST BE SET BY A SURVEYOR LICENSED TO PRACTICE AS SUCH BY THE STATE CF WASHINGTON. City of Tukwila STREET MONUMENT W! FRAME & COVER Raxr R5-07 :P,ml Es 08.03 + B. SHELTON STEET MONUMENT DETAIL O SCALE NONE ELEVATION (FROM STREET) TYPICAL SIDE VIEW NOTES: 1. MAILBOX MUST BE TYPE 'APPROVED BY THE POSTMASTER GENERAL' WITH A UNIFORM BOX STYLE AND METHOD CF ADDRESS IDENTIFICATION PER EACH STANDARD. 2 LOCATION IS SUBJECT TO APPROVAL BY THE CITY FOR PROTECTTCN OF VIEWS AND ACCESS AND IS TO BE SHOWN ON THE STREET IMPROVEMENT PLANS. 3. THIS SKETCH DEPICTS A MINIMUM STRUCTURAL ANO DIMENSIONAL STANDARD. INNOVATIVE DESIGNS MEETING THESE MINIMUMS MAY BE ALc.Erl NJ. MOTTO SCUD City of Tukwila MAILBOX INSTALLATION RUQ,: Rs -36 m' n: 08.03 Er.RAMA: B SHELTON MAILBOX INSTALLATION DETAIL O SCALE: NONE MINOR PRINICIPAL TUKWILA ARTERIAL' ARTERIAL' URBAN CENTER (SEE NOTE 1) S T T 1 NoSaLaml way :A'11r P. MARV NOTES: SECTION AA 110O6133 TOGO TM RAMO COM:mOlJmne EMIT V PLAN VIEW T. VOTE OOP TOONE MOOS I I - arxaaEaMxRPlart ELEVATION 1. SIDEWALKS SHALL BEA MINIMUM OF 6 FEET WIDE AT BUS STOPS AND PULLOUTS, OR WHERE THE SPEED UNIT IS OVER 35 MPH, OR WHERE A TRAIL AND SIDEWALK ARE COMBINED. 2. RACE CEMENT CONCRETE OVER T OF 5f8- MINUS CRUSHED ROCK ORAS SPECIFIED IN THE CURRENT APWAIWSDOT STANDARD SPECIFICATIONS. 3. REMOVE EXISTING CONCRETE CURB. GUTTER OR SIDEWALK TO THE NEAREST JOINT; SCORE JOINTS MUST BE SAW CUT AND REPLACED WITH NEW. ItlfTORGWA City of Tukwila SIDEWALK . cn RS -11 ormolus 0603 usr-'"' 07.05 unoEw B. SHELTON SIDEWALK DETAIL O SCALE: NONE 4'X4' CEDAR POST FINISH GRADE CRUSHED ROCK REFERENCE SHEET NO. DT1 SHEET 14 OF 15 SHEETS 1- w w I1- C/) (rj 0) X C.!) W 0 (40 'STOP' SIGN 3 ! INSTALLATION DETAIL _Eli I SCALE: NONE O z-..a.aaRRa RMaauvpuiT SECTION AA CURB DETAIL NOTES 1. THIS ALTERNATE SNCUID BE USED ONLY AFTER STUDYING CLOSENESS CF DRIVEWAYS, DRAINAGE TOPOGRAPHY, DRIVEWAY GRACES ETC. 2 CONCRETE SHALL BE CLASS BCR BETTER THAN 5.12 SACK. 3000 PSL 3. INSPECTION REQIRED BEFORE PLACING CONCRETE AT LEAST 24 HOUR NOTICE MUST BE GIVEN TO TUKWILA PUBLIC WCRKs OEPARTMENT. 4 ALL ORNEWAY APRONS BALL BE A MINIMUM OF 311-1104 S WHERE DRIVEWAY WIDTHS EXCEED 15, A 303* X31/2 DPN4SION -CANT SHALL BE PLACED LONGITUDINALLY AIDNG THE CE NTERUNE S ALL WORK SHALL BE PERFORMED N ACCORDANCE WITH AAA/AM/SOOT BANS AND SPECIFICATIONS CR AS DIRECTED BY THE COY OF TL KWILA 7. AN ASPHALT APRON MAY BE USED N AREAS WHERE NO CURB EOSTE & REMOVAL OF EXISTING CONCRETE CURB, GUTTER OR sIDEWALK SHALL BE SAW CUT TO THE NEXT JOINT.MOT ,ems City of Tukwila RESIDENTIAL DRIVEWAY ALTERNATE 1 OF 3 83081 aroma K 08.03 8. SHIELTON SECTION AA CURB DETAIL NOTES: 1. THIS ALTERNATE SHOULD BE USED 08.1 AFTER STUDYING CLOSENESS EF DRIVEWAYS, DRAINAGE, TGROGMPHY. DRIVEWAY GRADES, RIGHT OF WAY, ETC. 2 CONCRETE SHALL BE CLASS D OR BETTER THAN 5-12 SACK MOO PSL 1 INSPECTOR REQUIRED BEFORE PLACING CONCRETE AT LEAST 24 HOUR NOTICE MUST 8E GIVEN TO TUKWLA PDBUC WORKS DEPARTMENT. 4 ALL DRIVEWAY APRONS SHALL BEA MINIMUM CF 8' THICK S %MERE DRIVEWAY WDTHS 05000 15,A 113 X5.1? EXPANSION JOINT SHALL BEP ACED LONGITUDINALLY ALONG THE CENTERLNE S ALL WORK SHALL BE PERFORMED IN ACCORDANCE ACTH AP WMNSOOT PLANS MID SPECIFICATIONS OR AS DIRECTED BY THE CITY OF11JKVMA 7. AN ASPHALT APRON MAYBE USED IN AREAS WHERE NO CURB EOSTS. & REMOVAL OF EOSTING CONCRETE CURB, GUTTER OR SIDEWALK SHALL BE SAW CUT TO THE NEKT JOINT. MOTTO ICA. City of Tukwila RESIDENTIAL DRIVEWAY ALTERNATE 3 O 3 MEMO RS08G MLNITOR: 0817 .46E4. B. SHELTON DRIVEWAY APPROACH DETAIL CI SCALE NONE EXPANSON JOINT ANCHOR BOLT PATTERN PER N.D.C.B.U. PEDESTAL TEMPLATE EXPANSION JOINT S FRONT 2'-? 5'-0' MIN 1 1'-4' EXPANSON JOINT CLEAR WIDTH MOUNT ON PEDESTAL PROVIDED WITH N.D.C.B.U. UNIT EXPANSON JOINT '1' C0 SIDE (N.D.C.B.U.) MAILBOX INSTALLATION NEIGHBORHOOD DELIVERY AND COLLECTION BOX UNIT PER 2007 KING COUNTY ROAD DESGN AND CONSTRUCTION STANDARDS FIGURE 5-017 SCALE: NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 W 0 7 05 I4 N O .-N 0 Z o oO cc Z Z a a 0- a xx DESIGNED BY: 00 03 D w W U Ir z 0 CC d Ca mtu z Foster Short Plat\CADD\Drowings\R09400—PS—SN1.dwg Layout Name: Loyoutl Mor 24, 2011 — 3:49pm PhanH D:\Working\R09400 (CITY OF TUKWILA) GENERAL: 1. AT LEAST ONE WEEK BEFORE BEGINNING CONSTRUCTION, CONTACT PUBUC WORKS UTILITIES INSPECTOR AND SCHEDULE A PRECONSTRUCTION MEETING. 2. NOTIFY THE UTILITIES INSPECTOR AT 206-433-0179 AT LEAST 48 HOURS (2 WORKING DAYS) BEFORE STARTING PROJECT SITE WORK. 3. REQUEST A PUBUC WORK U11UTY INSPECTION AT LEAST 24 HOURS (1 WORKING DAY) IN ADVANCE BY CAWNG 206-433-0179. 4. THE CONTRACTOR ASSUMES SOLE RESPONSBIUTY FOR WORKER SAFETY, AND DAMAGE TO STRUCTURES AND IMPROVEMENTS RESULTING FROM CONSTRUCTION OPERATIONS 5. THE CONTRACTOR SHALL HAVE THE PERMIT(S) AND CONDITIONS, THE APPROVED PLANS, AND A CURRENT COPY OF CITY OF TUKWILA DEVELOPMENT GUIDELINES AND DESIGN AND CONSTRUCTION STANDARDS AVAILABLE AT THE JOB STE. 6. ALL WORK SHALL CONFORM TO THESE APPROVED DRAWINGS. ANY CHANGES FROM THE APPROVED PLANS REQUIRE PREAPPROVAL FROM THE OWNER, THE ENGINEER, AND THE CITY OF TUKWILA. 7. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKWILA DEVELOPMENT GUIDELINES AND DESIGN AND CONSTRUCTION STANDARDS, UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS DIRECTOR. 8. CONTRACTOR SHALL MAINTAIN A CURRENT SET OF RECORD DRAWINGS ON-SITE. 9. CONTRACTOR SHALL PROVIDE RECORD DRAWINGS PRIOR TO PROJECT FINAL APPROVAL 10. CONTRACTOR SHALL PROVIDE TRAFFIC CONTROL AND STREET MAINTENANCE PLAN FOR PUBUC WORKS APPROVAL BEFORE IMPLEMENTATION. 11. ALL SURVEYING FOR PUBUC FACILITIES SHALL BE DONE UNDER THE DIRECTION OF A WASHINGTON UCENSED LAND SURVEYOR. VERTICAL DATUM SHALL BE NAVD 1988. FOR PROJECTS WITHIN A FLOOD CONTROL ZONE, THE PERMITTEE SHALL PROVIDE CONVERSON CALCULATIONS TO NGVD 1929. HORIZONTAL DATUM SHALL BE STATE PLANE COORDINATES. 12. THE CONTRACTOR SHALL REPLACE, OR RELOCATE ALL SIGNS DAMAGED OR REMOVED DUE TO CONSTRUCTION. (CfTY OF TUKWILA) GRADING AND EROSION CONTROL NOTES: 1. THE EROSION PREVENTION AND SEDIMENT (ESC) MEASURES ON THE APPROVED PLANS ARE MINIMUM REQUIREMENTS. 2. BEFORE BEGINNING ANY CONSTRUCTION ACTIVITIES, ESTABLISH THE CLEARING OMITS AND INSTALL CONSTRUCTION ENTRANCE. 3. BEFORE ANY GROUND DISTURBANCE OCCURS, ALL DOWNSTREAM EROSION PREVENTION AND SEDIMENT CONTROL MEASURES (ESC) MUST BE CONSTRUCTED AND IN OPERATING. INSTALL AND MAINTAIN ALL ESC MEASURES ACCORDING TO THE ESC PLAN. 4. ESC MEASURES, INCLUDING ALL PERIMETER CONTROLS, SHALL REMAIN IN PLACE UNTIL FINAL SITE CONSTRUCTION IS COMPLETED AND PERMANENT STABILIZATION IS ESTABUSHED. 5. FROM MAY 1 THROUGH SEPTEMBER 30, PROVIDE TEMPORARY AND PERMANENT COVER MEASURES TO PROTECT DISTURBED AREAS THAT WILL REMAIN UNWORKDED FOR SEVEN DAYS OR MORE. 6. FROM OCTOBER 1 THROUGH APRIL 30, PROVIDE TEMPORARY AND PERMANENT COVER MEASURES TO PROTECT DISTURBED AREAS THAT WILL REMAIN UNWORKED FOR TWO DAYS OR MORE. IN ADDITION TO COVER MEASURES, THE CONTRACTOR SHAW A. PROTECT STOCKPILES AND STEEP CUT AND FILL SLOPES IF UNWORKED FOR MORE THAN 12 HOURS. B. STOCKPILE, ON SITE, ENOUGH COVER MATERIALS TO COVER ALL DISTURBED AREAS. 7. BY OCTOBER 8, SEED ALL AREAS THAT WILL REMAIN UNWORKDED DURING THE WET SEASON (OCTOBER 1 THROUGH APRIL 30). MULCH ALL SEEDED AREAS. (CITY OF TUKWILA) UTILITY NOTES: 1. ALL TRENCH EXCAVATION OPERATIONS SHALL MEET OR EXCEED ALL APPUCABLE SHORING LAWS FOR TRENCHES ALL TRENCH SAFETY SYSTEMS SHALL MEET WISHA REQUIREMENTS 2. PLACE POWER, CABLE, FIBER OPTICS, AND TELEPHONE UNES IN A TRENCH WITH A 5 FEET MINIMUM HORIZONTAL SEPARATION FROM OTHER UNDERGROUND UTILITIES. 3. ADJUST ALL MANHOLES, CATCH BASINS, AND VALVES IN PUBUC RIGHT-OF-WAY OR EASEMENT AFTER ASPHALT PAVING. (CITY OF TUKWILA) PAVEMENT RESTORATION: 1. 2. COMPACT BACKFILL TO COMPACTION OF UNDISTURBED GROUND OR COMPACT BACKFILL TO MEET CITY STANDARDS. RESTORE PAVEMENT TO ITS ORIGINAL CONDITION IMMEDIATELY FOLLOWING BACKFIWNG OR WHEN CONCRETE IS CURED. A. EXCEPT FOR WINTER OR OTHER WEATHER CONDITIONS WHICH PREVENT PAVING, COMPLETE PAVING, RESURFACING, OR FACILITY REPLACEMENT: 1. ON PRINCIPAL ARTERIAL, MAJOR OR COLLECTOR STREET WITHIN 3 CALENDAR DAYS. 2. ON OTHER STREETS WITHIN 7 CALENDAR DAYS. B. FOR WORK PREVENTED DUE TO WEATHER: 1'. PROVIDE A TEMPORARY PATCH. 2. PROVIDE A CONSTRUCTION SCHEDULE ADDRESSING MEANS AND METHODS TO MINIMIZE TRAFFIC DISRUPTION AND TO COMPLETE WORK AS QUICKLY AS POSSIBLE. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 (CfTY OF TUKWILA) WORK IN RIGHT-OF-WAY: 1. WHEN ACTIVITY IS UNATTENDED, INSTALL A SIGN WITH MINIMUM TWO-INCH LETTERS STATING PERMITTEE OR COMPANY NAME, AND DAY AND EVENING PHONE NUMBERS. TMC 11.08.140 2. INSTALL BARRICADES, SONS, WARNING UGHTS, AND SAFETY DEVICES SUFFICIENT TO NOTIFY PUBUC OF OBSTRUCTION OR TRAFFIC HAZARD. DEVICES MUST REMAIN UNTIL THE OBSTRUCTION IS CLEARED AND THE RIGHT-OF-WAY IS RESTORED. TMC 11.08.170.A 3. MAINTAIN ACCESS TO FIRE STATIONS, FIRE HYDRANTS, FIRE ESCAPES, AND FIRE FIGHTING EQUIPMENT. TMC 11.08.180 4. MAINTAIN ACCESS TO PROPERTY ADJOINING EXCAVATION OR SITE WORK. 5. PRESERVE AND PROTECT AU. PROPERTY ADJOINING EXCAVATION OR SITE WORK. 6. RESTORE DISTURBANCE TO PRIVATE AND PUBUC PROPERTY. TMC 11.0&220.D 7. DISTURBANCE OF SURVEY MONUMENTS AND MARKERS REQUIRES THE DIRECTOR'S PREAPPROVAL A LICENSED SURVEYOR SHALL REPLACE DISTURBED MONUMENTS AND MARKERS. & COMPLY WITH ALL STATE AND CITY LAWS AND PROCEDURES TO PROTECT PUBUC FROM AIR, WATER AND NOISE POLLUTION. TMC 11.08.210 9. INSTALL TEMPORARY SDEWALK OR CURB RAMP IF PERMANENT IS BLOCKED. TMC 11.08.220 10. COVER OPEN EXCAVATION WITH NON-SKID STEEL PLATES RAMPED TO ELEVATION OF CONTIGUOUS RIGHT OF WAY SURFACE. TMC 11.08.220 11, STORE ALL STOCKPILE MATERIAL SHALL BE STORED IN A SAFE MANNER TO PROTECT THE PUBUC. (CITY OF TUKWILA) STORM DRAINAGE NOTES: 1. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKNALA DEVELOPMENT GUIDEUNES AND DESGN AND CONSTRUCTION STANDARDS, AND THE CURRENT KING COUNTY SURFACE WATER DESIGN MANUAL, UNLESS OTHERWISE APPROVED. 2. MARK ALL STORM DRAIN INLETS WITH 'DUMP NO WASTE" AND EITHER 'DRAINS TO STREAMS', 'DRAINS TO WETLANDS', OR 'DRAINS TO GROUNDWATER', AS APPLICABLE. 3. DRIVEWAY CULVERTS SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM 3:1 SLOPE FROM THE EDGE OF THE DRIVEWAY TO THE BOTTOM OF THE DITCH. CULVERTS SHALL HAVE BEVELED END SECTIONS THAT MATCH THE INSIDE SLOPE. 4. SNGLE FAMILY RESIDENCE CONSTRUCTED ON LOTS CREATED BY SUBDIVISION MUST PROVIDE DOWNSPOUT INFILTRATION SHOWN ON THE APPROVED PLANS. 5. COORDINATE FINAL STUB -OUT LOCATIONS WITH THE UTILITIES INSPECTOR. PROVIDE A WIRE OR OTHER DETECTION DEVICE AND MARK STUB -OUT LOCATION WITH A 5 -FOOT 2' X 4" STAKE, BURIED 4 -FOOT AND LABELED "STORM OR "DRAIN". (CITY OF TUKWILA) SANITARY SEWER NOTES: 1. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKWILA DEVELOPMENT AND GUIDELINES AND DESIGN AND CONSTRUCTION STANDARDS, UNLESS OTHERWISE APPROVED. 2. THE CONTRACTOR SHALL MARK THE END OF THE SIDE SEWER, INSIDE THE PROPERTY UNE, WITH A 4 -FOOT PRESSURE TREATED 2 X 4, BURIED IN THE GROUND 4 FEET. THE BURIED END SHALL HAVE A 2 X 4 CLEAT NAILED TO IT TO PREVENT WITHDRAWAL OF THE STAKE. THE EXPOSED 1 -FOOT SHALL BE PAINTED TRAFFIC YELLOW AND THE DEPTH TO THE SDE SEWER OR TEE SHALL BE INDICATED IN BLACK PAINT. 3. INSTALL SANITARY SEWER UNES AT LEAST 10 FEET HORIZONTALLY, MEASURED EDGE TO EDGE, FROM ANY EXISTING OR PROPOSED WATER SUPPLY AND AT LEAST 18 INCHES BELOW THE BOTTOM OF A WATER UNE. (CITY OF TUKWILA) WATER SUPPLY NOTES: 1. THE CONTRACTOR SHALL INSTALL CORPORATE STOPS, WATER SERVICE UNES, AND METERS. KING COUNTY WATER DISTRICT fl125 WILL INSTALL THE METERS. 2. PRESSURE TEST ALL WATER MAINS AND APPURTENANCES. 3. FLUSH AND DISINFECT NEW, CLEANED, OR REPAIRED WATER MAINS. 4. INSTALL RESTRAINED JOINTS AT ALL BENDS, TEES, AND OTHER DIRECTION CHANGES. 5. ALL WATER MAINS SHALL HAVE A BLOW -OFF ASSEMBLY AT LOW POINT AND AN AIR VACUUM RELIEF VALVE AT HIGH POINT OF MAIN. 6. INSTALL FIRE HYDRANT ASSEMBLY SO IT STANDS PLUMB AND SO THAT THE LOWEST OUTLET IS AT 18" ABOVE THE FINISHED GRADE THE ASSEMBLY SHALL HAVE A CLEAR ZONE AROUND HYDRANT OF AT LEAST 36" AND THE PUMPER PORT SHALL FACE STREET OR FIRE ACCESS. 7. THE INSTALLER OF A FIRE UNE BACKFLOW PREVENTION DEVICE INSTALLED OUTSIDE THE BUILDING AND UNDERGROUND, SHALL HAVE A LEVEL 111 CERTIFICATE OF COMPETENCY OR A LEVEL U CONTRACTOR'S CERTIFICATE OF COMPETENCY. IF THE INSTALLER IS DIFFERENT FROM THE BACKFLOW PREVENTION DESIGNER, THE INSTALLER MUST STAMP, SIGN, AND DATE THE PLANS, IN ADDITION TO THE DESGNER'S STAMP, SIGNATURE, AND DATE. & INSTALL WATER MAINS CROSSING SEWER UNES SO THAT THE BOTTOM OF THE WATER MAIN IS AT LEAST 18 INCHES ABOVE THE TOP OF THE SEWER. LOCATE FULL SECTION OF WATER PIPE SO THAT ITS MIDPOINT IS ABOVE THE SEWER PIPE AT THE CROSSING. THIS INSTALLATION MAY REQUIRE SPECIAL STRUCTURAL SUPPORT FOR THE WATER AND SEWER PIPE. 9. INSTALL WATER SUPPLY ONES AT LEAST 10 FEET HORIZONTALLY, MEASURED EDGE TO EDGE, FROM ANY EXISTING OR PROPOSED SEWER AND AT LEAST 18 INCHES ABOVE THE TOP OF A SEWER. REFERENCE SHEET NO. SN1 SHEET 15 OF 15 SHEETS cow O 0z ccz O I -' cc cc CO I--- Cn 0 U -0/0 W W co 0 0 .ti 0 z 0 CC z x a 0 z c7 w z z x a co 4a CHECKED BY: Q-.. Gam! Ci >- 0 0 z CITY OF TUKWILA KING COUNTY, WASHINGTON SHORT PLAT FILE NO. DECLARATION Know all men by these presents that we, the undersigned. owner(s) in fee simple of the land herein described do hereby make o SHORT PUT. The undersigned further declore this SHORT PLAT to be o graphic representation of said SHORT PLAT of said and some is made with the free consent and in accordance with the desire of the owner(s). IN WITNESS WHEREOF we set our hands and seals. State of Washington County of On this day personally appeared be fore me to me known to be the individual who executed the foregoing instrument and acknowledged the he/she signed the some as his/her voluntary act and deed for the uses and purposes mentioned therein. GIVEN under my hand a seal this day of APPROVALS: DEPARTMENT OF ASSESSMENTS Reviewed and approved by the Short Subdivision Committee and hereby certified for filing this _day of Chairman, Short Subdivision Committee Examined end approved this day of Assessor Deputy Assessor Account Number 0040000375 & 0040000380 20 RECORDING N0. VOL./PAGE PORTION OF _NW_1/4 of _NE_1/4, S._22 _ T. 23 N., R. 4 _E., W.M. Signature Name os commissioned Title My appointment expires IND 0 - a RECORDER'S CERTIFICATE filed for record this day of 20 at M in book of at page at the request of Mgr. Supt. of Records EXISTING LEGAL DESCRIPTION TRACTS 6 AND 7, BLOCK 3. ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON. NEW LEGAL DESCRIPTIONS LOT 1 THAT PORTION OF TRACTS 6 AND 7. BLOCK 3. ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10' EAST, ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144111 STREET AND THE NORTHWEST CORNER OF SND TRACT 6; THENCE SOUTH 87'49'10' EAST, ALONG SAID SOUTH MARGIN. 128.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING ALONG SAID SOUTH MARGIN. SOUTH 87'49'10' EAST 129.37 FEET TO THE EAST LINE OF SAID TRACT 7; THENCE SOUTH 011O'02 WEST, ALONG THE EAST UNE OF SA113 TRACT 7. 59.93 FEET; THENCE NORTH 88'49'58' WEST 25.00 FEET; THENCE SOUTH 2520'49' WEST 139.88 FEET; THENCE NORTH 8751'43 WEST 27.34 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE RIGHT WITH A RADIUS OF 20.00 FEET, AN ARC OF 31.07 FEET; THENCE NORTH 01'08'52- EAST 169.37 FEET TO THE SOUTH MARGIN OF SOUTH 144TH STREET AND THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTIUTIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER W1TH AND SUBJECT TO SIDEWALX, UTIUTY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 2 THAT PORTION OF TRACT 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10' EAST. ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144711 STREET AND THE NORTHWEST CORNER OF TRACT 6 SAID PLAT; THENCE SOUTH 87'49'10' EAST, ALONG SAID SOUTH MARGIN, 257.87 FEET TO THE EAST LINE OF SAID TRACT 7; THENCE SOUTH 01'10'02 WEST, ALONG THE EAST UNE OF SAID TRACT 7, 59.93 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING ALONG SAID EAST LINE, SOUTH 0110'02' WEST 129.00 FEET; THENCE NORTH 8751'43" WEST 82.30 FEET; THENCE NORTH 2520'49' EAST 139.88 FEET; THENCE SOUTH 88'49'58" EAST 25.00 TO THE EAST UNE OF SAID TRACT 7 AND THE TRUE POINT OF BEGINNING. TOGETHER 11TH TRACT A FOR ACCESS AND UTIUTIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER 11TH AND SUBJECT TO SIDEWALK. UT1UTY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 3 THAT PORTION OF TRACT 7, BLOCK 3, ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10" EAST, ALONG THE CENTERUNE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144111 STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 87'49'10" EAST, ALONG SAID SOUTH MARGIN. 257.87 FEET TO THE EAST UNE OF SAID TRACT 7; THENCE SOUTH 0110'02' WEST, ALONG THE EAST UNE OF SAID TRACT 7, 188.93 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING ALONG SAID EAST UNE, SOUTH 0110'02' WEST 122.00 FEET TO THE SOUTH UNE OF SAID TRACT 7; THENCE NORTH 87'51'43' WEST, ALONG THE SOUTH UNE OF SAID TRACT 7, 62.26 FEET; THENCE NORTH 01'08'52" EAST 122.00 FEET; THENCE SOUTH 8751'43' EAST 62.30 FEET TO SAID EAST UNE OF TRACT 7 AND THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTIURES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO TOGETHER WITH AND SUBJECT TO SIDEWALK. UTIUTY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LAND SURVEYOR'S CERTIFICATE I. Richard L Schroeter, registered as a land surveyor by the Slate of Washington. certify that this plot is bused on an actual survey of the land described herein. conducted by me or under my supervision; that the distances, courses and angles ore shown thereon correctly, and that monuments other than Nose monuments approved for t ' 1 er date, PP eye have been set and lot yr)y/) 6 round as depicted on the plat. SURVEY FOR_ TL INVESTMENTS (NEW LEGAL DESCRIPTIONS CONTINUED) LOT 4 THAT PORTION OF TRACT 7, BLOCK 3, ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET. THENCE SOUTH 87'49'10' EAST, ALONG THE CENTERUNE OF SAID SOUTH 144TH STREET. 659.69 FEET: THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144TH STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 87'49'10' EAST, ALONG SAID SOUTH MARGIN, 257.87 FEET TO THE EAST LINE OF SAID TRACT 7; THENCE SOUTH 0110'02' WEST, ALONG THE EAST LINE OF SAID TRACT 7. 188.93 FEET; THENCE NORTH 87'51'43" WEST 62.30 FEET; THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING SOUTH 01'08'52' WEST 102.00 FEET TO THE SOUTH UNE OF SAID TRACT 7; THENCE NORTH 87'51'43" WEST, ALONG SAID SOUTH LINE. 66.00 FEET; THENCE NORTH 01'08'52" EAST 102.00 FEET; THENCE SOUTH 8751'43" EAST 66.00 FEET TO THE TRUE POINT OF BEGINNING,. TOGETHER WITH TRACT A FOR ACCESS AND UTILITIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER %MTH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 5 THAT PORTION OF TRACTS 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A. CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10' EAST, ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144TH STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 01'08'52" WEST, ALONG THE WEST UNE OF SAID TRACT 6, 209.13 FEET; THENCE SOUTH 87'51'43' EAST 65.00 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING SOUTH 87'51'43' EAST 64.50 FEET; THENCE SOUTH 01'08'52" WEST 102.00 FEET TO THE SOUTH UNE OF SAID TRACTS 6 AND 7; THENCE NORTH 87'51'43' WEST. ALONG SAID SOUTH UNE, 64.50 FEET; THENCE NORTH 01'08'52' EAST 102.00 FEET TO THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTIUTIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO TOGETHER WITH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 6 THAT PORTION OF TRACT 6, BLOCK 3, ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144711 STREET; THENCE SOUTH 87'49'10" EAST, ALONG THE CENTERUNE OF SAID SOUTH 14411 STREET, 659.69 FEET; THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH .144TH STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 01'08'52' WEST, ALONG THE WEST UNE OF SAID TRACT 6, 209.13 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 87'51'43' EAST 65.00 FEET, THENCE SOUTH 01'08'52" WEST 102.00 FEET TO THE SOUTH LINE OF SAID TRACT 6; THENCE NORTH 87'51'43' WEST, ALONG THE SOUTH UNE OF SAID TRACT, 65.00 FEET TO THE WEST LINE OF SAID TRACT; THENCE NORTH 01'08'52' EAST. ALONG SAID WEST UNE OF TRACT 6. 102.00 FEET TO THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTILITIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NUMBER SUBJECT TO AND TOGETHER WITH A 15 FOOT DRAINAGE EASEMENT RECORDED UNDER KING COUNTY RECORDING NUMBER TOGETHER WITH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDE. .';• KING COUNTY RECORDING NUMBER SCHROETEROLAND SURVEYING PROFESSIONAL LAND SURVEYORS PD. Box 813, Seahurst, Washington 98062 (206) 242-6621 FAX (206)243-9679 OWN. BY LAW DATE 1/18/10 DATE FIELD 12/22/09 JOB NO. 584/2 PROJECT N0. 09082SP CHK:, BY SCALE SHEET 1 OF 3 1(\nct , CITY OF TUKWILA KING COUNTY, WASHINGTON SHORT PLAT FILE NO. (NEW LEGAL DESCRIPTIONS CONTINUED) LOT 7 THAT PORTION OF TRACT 6, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PUT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10" EAST, ALONG THE CENTERUNE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144111 STREET ANO THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 01'08'52' WEST. ALONG 111E WEST UNE OF SAID TRACT 6. 132.00 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 87'49'10" EAST 103.50 FEET; THENCE SOUTH 01'08'52" WEST 36.70 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE RIGHT WITH A RADIUS OF 20.00 FEET, AN ARC OF 31.76 FEET; THENCE NORTH 8751'43' WEST 44.14 FEET; THENCE SOUTH 0108'52' WEST 20.00 FEET; THENCE NORTH 87'51'43' WEST 39.00 FEET TO THE WEST UNE OF SAID TRACT 6; THENCE NORTH 0108'52' EAST, ALONG SAID WEST UNE. 77.13 TO THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTILITIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER WITH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 8 THAT PORTION OF TRACT 6, BLOCK 3, ADAMS HOME TRACTS. ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144111 STREET; THENCE SOUTH B7'49'1O' EAST. ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET TO THE SOUTH 'AARON OF SAID SOUTH 14481 STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 01'08'52' WEST, ALONG THE WEST UNE OF SAID TRACT 6, 6&00 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 87'49'10' EAST 103.50 FEET; THENCE SOUTH 0108'52' WEST 64.00 FEET; THENCE NORTH 87'49'10' WEST 103.50 TO THE WEST UNE OF SAID TRACT 6; THENCE NORTH 0108'52' EAST, ALONG SAID WEST UNE, 64.00 TO THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTIUTIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER WITH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER LOT 9 THAT PORTION OF TRACT 6. BLOCK 3, ADA1.15 HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH. AND SOUTH 144111 STREET: THENCE SOUTH 87'49'10' EAST, ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 0108'52' WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144TH STREET, THE NORTHWEST CORNER OF SAID TRACT 6 AND THE TRUE POINT OF BEGINNING; THENCE SOUTH 0108'52' WEST, ALONG THE WEST UNE OF SAID TRACT, 68.00 FEET; THENCE SOUTH 87'49'10' EAST 103.50 FEET; THENCE NORTH 0108'52' EAST 68,00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144111 STREET; THENCE NORTH 87'49'10' WEST, ALONG SAID SOUTH MARGIN. 103.50 FEET TO THE TRUE POINT OF BEGINNING. TOGETHER WITH TRACT A FOR ACCESS AND UTILITIES, MAINTENANCE AGREEMENT RECORDED UNDER KING COUNTY RECORDING NO. TOGETHER WITH AND SUBJECT TO SIDEWALK, UTILITY AND DRAINAGE EASEMENTS RECORDED UNDER KING COUNTY RECORDING NUMBER RECORDER'S CERTIFICATE filed for record this day o1 20 at M in book of at Page at the request of Mgr. Supt. of Records TRACT A: ACCESS AND UTILITIES EASEMENT MAINTENANCE AGREEMENT RECORDED UNDER RECORDING NO. THAT PORTION OF TRACTS 6 AND 7, BLOCK 3, ADA1.15 HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 1441H STREET; THENCE SOUTH 87'49'10" EAST, ALONG THE CENTERUNE OF SAID SOUTH 14481 STREET. 659.69 FEET; THENCE SOUTH 0188'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144711 STREET. THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 87'49'10" EAST. ALONG SAID SOUTH MARGIN 103.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING ALONG SAID MARGIN. SOUTH 87'49'10' EAST 25.00 FEET; THENCE SOUTH 01'08'52" WEST 169.37 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE LEFT. WITH A RADIUS OF 20.00 FEET. AN ARC OF 31.07 FEET; THENCE SOUTH 87'51'43' EAST 47.34 FEET; THENCE SOUTH 01'08'52' WEST 20.00 FEET; THENCE NORTH 87'51'43' WEST 156.50 FEET; THENCE NORTH 0108'52' EAST 20.00 FEET; THENCE SOUTH 87'51'43' EAST 4-4.14 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE LEFT WITH A RADIUS OF 20.00 FEET, AN ARC OF 31.76 FEET; THENCE NORTH 0108'52' EAST 168.70 FEET TO THE SOUTH MARGIN SAID SOUTH 144TH STREET AND THE TRUE POINT OF BEGINNING. South 144th Street RECORDING NO. VOL./PAGE PORTION OF _NW_1/4 of _NE_1/4, S._22 _ T. 23 N., R. 4 _E., W.M. SIDEWALK , UTILITY AND DRAINAGE EASEMENTS KING COUNTY RECORDING NUMBER 15' DRAINAGE EASEMENT THAT PORTION OF TRACT 6, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10" EAST, ALONG THE CENTERUNE OF SAID SOUTH 14481 STREET, 659.69 FEET; THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 14481 STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH. 0108'52" WEST, ALONG THE WEST UNE OF SAID TRACT 6. 194.12 FEET TO 111E TRUE POINT OF BEGINNING; THENCE SOUTH 87'51'43" EAST 39.00 FEET; THENCE SOUTH 01'08'52" WEST 15.00 FEET; THENCE NORTH 87'51'43' WEST 39.00 FEET TO THE WEST UNE OF SAID TRACT 3; THENCE NORTH 01'08'52 EAST, ALONG SAID WEST LINE, 15.00 FEET TO THE TRUE POINT OF BEGINNING. 10' SIDEWALK AND UTILITY EASEMENT NUMBER 1 THE NORTH 10.00 FEET OF TRACTS 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PUT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON. SIDEWALK AND UTIUTY EASEMENT NUMBER 2 THAT PORTION OF TRACT 6, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGE 31, RECORDS OF KING COUNTY WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'49'10' EAST, ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 01'08'52" WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144TH STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 0108'52" WEST, ALONG THE WEST UNE OF SAID TRACT 6. 10.00 FEET TO THE SOUTH LINE OF THE NORTH 10 FEET OF TRACT 6; THENCE SOUTH 87'49'10" EAST 93.49 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 0108'52' WEST 163.88 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE RIGHT 14111-1 A RADIUS OF 10.00 FEET, AND ARC OF 15.88 FEET; THENCE NORTH 8751'43" WEST 44.32 FEET; THENCE SOUTH 0108'52" WEST 5.00 FEET; THENCE SOUTH 87'51'43" EAST 44.14 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE LEFT WITH A RADIUS OF 20.00 FEET, AN ARC OF 31.76 FEET; THENCE NORTH 0108'52" EAST 158.70 FEET TO A POINT ON THE SOUTH UNE OF THE NORTH 10.00 FEET OF TRACT 6; THENCE NORTH 87'4910' WEST 10.00 FEET TO THE TRUE POINT OF BEGINNING. SIDEWALK AND UTIUTY EASEMENT NUMBER 3 THAT PORTION OF TRACTS 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 31, RECORDS OF KING COUNTY WASHINGTON. DESCRIBED AS FOLLOWS: BEGINNING AT A CONCRETE MONUMENT MARKING THE INTERSECTION OF 42ND AVENUE SOUTH AND SOUTH 144TH STREET; THENCE SOUTH 87'4910' EAST, ALONG THE CENTERLINE OF SAID SOUTH 144TH STREET, 659.69 FEET; THENCE SOUTH 0108'52- WEST 20.00 FEET TO THE SOUTH MARGIN OF SAID SOUTH 144711 STREET AND THE NORTHWEST CORNER OF SAID TRACT 6; THENCE SOUTH 01'08'52" WEST, ALONG THE WEST LINE OF SAID TRACT 6, 10.00 FEET TO THE SOUTH UNE OF THE NORTH 10 FEET OF SAID TRACTS; THENCE SOUTH 87'49'10" EAST, ALONG SAID SOUTH UNE, 128.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 0108'52' WEST 159.37 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE LEFT WITH A A RADIUS OF 20.00 FEET, AN ARC OF 31.07 FEET; THENCE SOUTH 87'51'43" EAST 47.34 FEET; THENCE SOUTH 0108'52" WEST 20.00 FEET; THENCE NORTH 87'51'43" WEST 156.50 FEET; THENCE SOUTH 0108'52" WEST 5.00 FEET; THENCE SOUTH 87'51'43' EAST 161.50 FEET; THENCE NORTH 0108'52' EAST 30.00 FEET; THENCE NORTH 87'51'43' WEST 52.17 FEET TO A POINT OF CURVATURE; THENCE ON A CURVE TO THE RIGHT VAT H A RADIUS OF 10.00 FEET, AN ARC 15.54 FEET; THENCE NORTH 0108'52' EAST 164.19 FEET TO THE SOUTH LINE OF THE NOR 0 10.00 FEET OF SAID TRACTS; THENCE NORTH 87'49'10' WEST, ALONG SAID SOUTH LINE, 10. O FEET TO THE TRUE POINT OF BEGINNING. rt3 LAND SURVEYOR'S CERTIFICATE I, Richard L Schroeter, registered as o land surveyor by the State of Washington, certify that this plat is based on an actual survey of the land described herein. conducted by me or under my supervision; that the distances. courses and angles are shown thereon correctly, and that m• um • er than t ground as those monuments appr• y-• j g J! , • ter date, have been set and M depicted an the plat. SURVEY FOR: TL INVESTMENTS o c C z SCHROETEROLAND SURVEYIt PROFESSIONAL LAND SURVEYORS P.a. Box 813, Seohurs<, Washington 98062 12061 242-6621 FAX (2061243-9679 DWN. BY LAW DATE 1/18/10 DATE FIELD 12/22/09 JOB NO. 564/2 PROJECT N0. 09082SP CHKD. BY SCALE SHEET 2 OF 3 CITY OF TUKWILA KING COUNTY, WASHINGTON SHORT PLAT FILE NO. cund bass disk w/punch mark in concrete in case - 12/18/09 S8T49'107 659.69' (c) 42nd N8T49'10'W 644.67' (c) 644.75' PROPERTY NOTES: 1. TRACT A AS AN ACCESS ROAD IS BE SIGNED 'FIRE LANE - NO PARKING' ON BOTH SIDES. 2. A FIRE HYDRANT IS TO BE NO FURTHER THAN 250 FEET FROM ALL STRUCTURES AS MEASURED 8Y veaa1LAR TRAFFIC 3. All UTIJTES INCLUDING POWER ARE REQUIRED TO BE UNDERGROUND, PER CITY OF TUKWILA ORWNANCE 4. LANDSCAPING REQUIREMENTS: ALL LOTS WILL BE REQUIRED TO PLANT ONE (1) TREE N THE FRONT YARD. LOTS WITH MULTIPLE FRONTS SHALL ADO A TREE TO THE FRONT WHERE THE FRONT DOOR IS LOCATED. 5. TOTAL AREA : LOTS 6 AND 7 AREA = 80,176 sf 3 or 1.84 acres t 6. AVERAGE LOT WIDTH LOT 1 = 86' LOT 2 = 54' LOT 3 = 62' LOT 4 = 66' LOT 5 = 64.5' LOT 6= 65' LOT 7= 57' LOT 8= 64' LOT 9= 68' Survey Notes: 1. Fidel dote for this survey was obtained by direct fid measurements. Angular end linear relationships were measured with o sis second theodolite and electronic measuring device, snpptemented by o steel talk. This survey meets or exceeds the standards contained in WAC 332-130-090. (P) 2. REFERENCES PLAT OF ADALLS HOME TRACTS, VOL11/31 ROS 81/218 south end 6' Mon Ink fence 1.4' north & 0.6' west of set mar w/cop DETAIL A NTS 5 N C 0.7' east (5) 0.2' east t end 4' chain link fence is O 1.2' north of set rebar vi/cop DETAIL B NTS 0.4' 0.4' orth end 5' Moir Ink to south is 0.4' north & 0.4' east of set rebar w/cap oncrete footing - - - w/Man Ink fence to this 0.2' north (16) east end chain Ink f 0 1.3' west and on line est end new 6' chin link fence 0 0.Y south & 0.5' east of set rebor w/cap RECORDER'S CERTIFICATE fib& for record this day of 20. aL in book of .at page of the request of Mgr. Supt of Records LO _n P� z .m 128.2' LEGEND H 0 RECORDING NO. Concrete Monument in Case Tock n Lead or Noll & Disk SCALE: set rebar w/cop )'23604 • Found pipe or rebar 7'(n Existing &e hydrant BSBL Beading Setback Line South 144th Street S8T49'107 (Basis of Bearing - Assumed) 58T49'17'E (KCAS) 1319.35' (m) 1319.50' (P) 1318.=• (K ) j' monumented CI_ 10.0' SIDEWALK & UTB17Y EASEMENT S8749'107aril inlead fet 0.43' east If 257.67 (c m C' of new lot comer t VOL./PAGE 1 tech - 30 8. 0 30 40 PORTION OF NW 1/4 of _NE 1/4, S. 22 _ T. z3N , R `►_E., W.M. S8T4' 10'5 9 BS& -' 10.0' SIDEWALK & U111JTY EASEMENT REC. j LOT 9 (7.417 { 3) . _BSBL 7'4'' 09 2� 1 m j.12.1 I' 8 1 SHED TO BE REMO • 20' Ion LOT8 (8021{T) 6 ) 10 8581 749'1 ,o 1 "Ji61 BSBf 10' 1} 1 25. ea (b W o 129.3 �' 10.0' SIDEWALK & �- URUTY EASEMENT 7 5' REG 51.3' LOT1� 20 t (17.453 et it.). ►1 (es{3) X15' Oroi age Easement I I Rec. / 5' utility easement Rec / /f W L_ • 65.00 et0 BS81 5 0 44114. '4' 0 58751 5 LOT 6 (0.e20 { 3.) Wz n J P a: ▪ c Fs• �59.6'58 0/ 4 11 I L ling House 04419 to remain te' 4' Z RR``�" i0c, 47.34 587'51"43'E 5 unity easemen 156.50' Rec. }(- ser5i'43'E L5 edify easement F. Rec BSBL LOT 5 (4678 { *) SEE DETAIL A N87514.3 9 SEE DETAIL 8 Rebar w/cop set 0.62' west of new lot coma (15) LAND SURVEYOR'S CERTIFICATE 1, Richard L 501003ter, registered as o land surveyor by the Stote of Washington. certify that this plat L9 based on an octud survey of the land described heren, conducted by me or under my supervision; that the distances. courses and angles are shown thereon correctht and that monuments other Bum those monuments approved for setts a a oter date, hove been set are lot -co �� ground as depicted on the p1aL �(.(.( / 0 set rx L assi /tack S8751'43'E 8230' / 0 0 S87'51'43"5 5r--- B3BL --15 LOT 4 n. P (4731 { 3) z� L__ I 66.00' 1 5J 62.30 b 58751'43'E Iv 5 5 LOT I min 62.26' on" 00 n z / Found Bross disk %a/punch mark in 70.2' concrete in cose - 12/18/09 401.81 (c) 1087'49'10'W 386.80' c) 386.85' (9) ound rebar w/cop 010708 at calculated comer position; east end wood fence is 0.8' west -t 2'. 2' w/tock Approx. location north end old chain Ink fence is 8.4' west; fence falling down in this areo chain Ink fence is 5.3' west t 2'x 2' vi/tock w/'edge concrete is 1.1' west Existing. Aouse/ west edge concrete is 1.1' west t edge oncrete (8) *ma/ ,nw ; tS-1O - et eery Y AT ma P� ,, I P PSS DETAIL C tb 257.76 SURVEY FOR: R NVESUIEN15 (14) SEE DETAIL C 1 0.8' 0 0.4' Gomer (N->E)choin Ink fence is 3.1' east & 0.4' north of set rebor w/cop 3.1' Gin link fence is 0.8' south (13) 15' 0 (1) 0) (0 0 <0 rmg -^ SCHROETEROLAND SURVEYING PROFESSIONAL LAND SURVEYORS PD. Bax 813, Seol.cst, VosNpton 98062 (206) 242-4621 FAX (2061243-9679 0914. BY LAW DATE 1/18/10 DATE FIELD 12/22/09 CHKD. BY Revised SCALE 1' = 30' JOB NO. 564/2 PROJECT NO. 090825P SHEET 3 OF 3 ND a 0 r� NE1/4, SEC. 22—T23N—R4E, W.M.EFERENCE w SEQUENCE OF CONSTRUCTION: SHEET NO. EC1 SHEET. 2 OF 14 SHEETS 1. FLAG AND STAKE CLEARING UMITS. 2. INSTALL EROSION CONTROL MEASURES (SILT FENCE, ETC.) 3. FIELD LOCATE ALL UTILITIES. 4. INSTALL CONSTRUCTION ENTRANCE 5. CLEAR AND GRUB SITE. 6. GRADE THE SITE. 7. INSTALL INFILTRATION TRENCHES, SANITARY SEWERS, STORM, WATER, AND OTHER SITE UTIUTIES; PROVIDE CATCH BASIN INLET PROTECTION AT THE NEW INLET LOCATIONS. 6. CONSTRUCT BUILDING STRUCTURES. 9. FACIUTY UPONABIUZATION OF ENTIRE E, AS EROSION CONTROL ST SITE, AS APPROVED BY THE CITY' OF TUKWILA NATES' w w w I 1 w v1 FOSTER SHORT PLAT 44XX / 4419 - S.144TH STREET TUKWILA, WA 98168 TESC PLAN • O 4_iB• _ 1 —Y cr N 507+00 CLEARING LIMITS PVT. R0 STAli0+00 O ce (TYP) ci,,,•, 0. 8 505+00 ` • $44711 a E 504+00 — — -00 8 9v \ — I I TREE ; 0 N ss ss 3 \ / I a (.zs) re n" 02.,0 ne ': "K -z j - Painted TO BE REMOVED k l y (T1P) a I , ►__ ----`'.-•: —'" rr 3 , "- - 9 9 g Y-9 ,-?. ,,t-T _ ,1 _ — — ,,.,' •e _ ,. : __ : _ „ : — _ _ ' _PROJECT .' . w:-•t• 7411 :a• 302 \ D" I' 1 N - 31. I ! I App., Iwuo. • —%b.51C2 ,!+ 1 1C, \ it / i ' z ' '— ,Jw as mm ,m !may 1 . \ N , w 1 I I I . •• ) / ° I I a, , .0' I w c4, T`yaga., ii;°+ IQ '' `.t, w0 wIII Fn m cp LOT 9 1(7,037 SQ. FT) 1 TEMPORARY STOfKPILE AREA / fs;i:C,y. , .. •- !, •" i. +.sff. ' r.;4;i,Ci".;.i If"a ,Il.q•.. 1 I p `A \ \ „E RJC A M ,o TREE °409' 7.5, TO BE SAVED j 1 a ye I'° / f 1 .•" (I 6pOI ..• wan, ,.5° . _________ / ac,,,,,."„lae, 1 I 25.00' »,r.r.nom >aa n ` b oa \ 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE AND UTILITY PLANS. EARTHWORK VOLUME ESTIMATES: T.W $ 1o3.s°' '' CpNSTRUCTION I P.IX. HOUSE .9$8'49'58' !ENTRANCE (n 0 REMAIN ° b„o.'5 fi`b wk 1 587°4910"E .0 1 \ 10.0' SIDEWALK & UTILITY EbSEMENT I _ uta a —{ COVERED • 0 BE DEMOU" oRCH ED \ ` I J -, chain link fence r is 5.3' west LOCATION CUT (CY) ALL (CY) ACCESS ROAD/DRAINAGE FACILITY 975 185 -( • \m 1 v <m W I c ' ) • -. .. ,. a 0/10 r / •,• ,IlkA. . ' / I ilo EX. SHED, \ TO E DEMOUSHE I OM LOT 1 4 r j / \ \ 0.7' east •o, L T S (6,6 I SQ. FT) I•,•-•,' o I i : I 10.0' U U (17,453 SQ. FT.) DEWALK k EASEMENT` !/ }/ /• / 1 /__/`/ / / / I / / / / a est edge concrete is 1.1' west c , \, F_ N,,, • g gPOSs `a• I _. / 6 103.50 ll rJJ 111A1 1D!!11)A 1 ' N I beiMae ` LOT 2 (6,903 SQ. FT.) !est edge concrete is 1.1 west Land Development and avll Engineering Consultants 5130 South 166th Lane SeaTac, WA 98188 T (206) 229-6422 St{Ol11411g P111 , ot- PO 5k, a \ 587°4910"E \ \ \ \ I 1 1 \ EX. GARAGE' I— I 1 I I F • • / eN .;§ ' + - N 0.2' east d Z • \ \ TO BE OEMOUSHED U l \ LOT7 I (6,590 SQ. FT.) \ ,„c. .i \ I I I EX. DECK ` r.r.rw JI0 BE REMOVED ° L„, ! / INLET PROTECTION (Tl P) \ © \ . \ ! 11 8 • I \l — \ if\ Tsl•. ... 1 _ \ . 1•E I .34' 587'5143'E 8230' '” 1 ' \ , 1 ISSUE DATE 1-20-2010 DRAWN BY: H. H. PHAN 1 CHECKED BY: PROD. MNGR: H. H. PHAN 1 N O \ P . i t7 {• •-r • 1 1 =C 11+ 5'` 1°0' 11 / < N mG dhcin 4M i• I \ IL( ....as Is o.z' wed '\ m o o ti • \ p \ •% ` \ \ LOT I 1 1 \ 6 ° 102.00` /I -- — '— - 294.00 - 1Ks p To - — -.00__ _R4 l--- I cri (n> N :500.00 4.++ I 8 t 11 9 N01 °08'52 E i °'• 102.00'4111C' 5.0' U11UTY EASEMENT p iyY' , v0,-- -1 ' -- -IL-1- \9 i sxaay4,y! , Watigg as"° N01°08'52'E —306.00_. N / PORARY STOCKPILE AREAi 1 I d LOTS h I ` 0 t I ° ilk JOB NO. R09400 DESIGNED BY: H, REVISION DESCRIPTION O c (1 (.) x ` O ywr ' •: , i, 1 , .FYc • _ J I I J • I f cS' L t- GDP' . !EMU2'L ,r,. 1 ''.t. j •.0 .A • 6. Id • I 64150'x: — f •6.00' 26' - - E" S87' •E—257.7e— V 15 14 13 m me -3 z1 ,° 0 10 20 GRAPHIC SCALE It C) CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 o SILT FENCE (TYP) 1HORIZONTAL Nap 1 inch =20 . Han Phan L:\Working\R09400 — Foster Short Plot \CADD\Drawings\R09400—PS—PG1.dwg Layout Name: Layoutl NE1/4, SEC. 22-T23N-R4E, W.M. INSTALL STREET MONUMENT 24' WIDE DRIVEWAY APPROACH INSTAL STRE-ETH SIGN -AND -POS PER CITY OF TUKWILA STANDARD T SD INSTALL N.D.C.B.U. (9) MAILBOX STRUCTURE - - pointe a -EX._CURB_cIA' ER - T9, REMAIN 9 EX. MAILBOXES TO BE REPLACED w REMOVE/REPLACE CURB & GUTTER S. 14411-1 505+00 'NO PARKING FIRE LANF- bT 1RAF1C LETTER (TYP) o S&EE SHEET PG2 pR DETAIL 9°a,ee T y O g • 350' : 1 _ ___TOP OF SIDEWA J - ! TO MATCH EX. GRADE I -T Ea IH 10.0' SID UTILITY N �I� I IN1, ILA ( IPALCY RESIDENCE LOT 9 1,(7,037 SQ. FT.) L_ 1 I..W BSL (n'P) 103.50' N EX. GARAGE 587'49'10'E 0 0 BSB (TYP) 1 \ ! \ \ 1,m �!�! lw CEMENT CO C. EM NT I 5 .1/ STDFF\ SIGN SEE DETAIL 11 ON SHEET DT1 10.0'SIDEWALK & • UTILFTYIEASEMENT 5.0' NIDE SIOEWAU( :I DRI AY MATCH EX. -PAVEMENT- - - - - 18' ATE DRIV WAY APPROA (LOT 1) 1,,18' WIDE DRI AY APPROAC (LO 7, 8 & 19) \ }-Sa TO OF EWAu( TO MATCH EX. GRADE 9 504+00 W1 , s N 0 3 O CX _... teems .du. old uholn fon,. Io .Rea FALM_YtRESCOCE LOT 8 (6,6 SQ. FT ) VERTICfAL CURB & ( 5\0' WIDE SIDEWALK X03.50 .587.49'10'E oL ()� 'er W I \ east g \ IJ 1m \I / TA100+77 D PAVING AINAGE is \vim; EEAASZIENT 39.00' 9L (TW 25.00' I S83'49'58' LOT 1 chain link is5.3'v 2"a x- .neh (17,453 SQ. FT.) WIDE SIDEWALK \ PROPOSE, 81401 FALY LcT 7 (6,598 SQ. FT.) - 587'5143'E 4414' , COVED PakiH TO BE DEMOUSHED ENT, CONC. TRAFFIC CU ALK RAMP TYPE LOT 2 est edge is Ko‘nia `03 SQ. FT.) EX. DECK ITO BE REMOVED F ra �,_ Ir. x. BSBL (TYP� est edge is 1.1' wort •eye to STA 99+20.50 END PAVING 587°5143'E N \ 65.00' a9 0 I\ \ I RAISED ASPIA' LT • DTtI�VEWAY vI RB PROPOSED f1NOLE FAF,LMBDENCE 'F0�l_N �N LI LOT 6 -. 1 � , (6,629 . FT.) )73 /1 / I I. I1 1 / / IN. I' (TYP) TYP) LTA STANDARDS FF F I I FL) I LLOT 3 g (7.597 SQ. FT.) Li / PVT. RD. SLR 12+1 H4MMERHEI,D STA 1 FIALY tCBICE 0 1 JJ(659Sg.FT)J Ilm � I m BSBL tTYP) ▪ ,1 64150' T-7.57.76,_,, 587°5143T W fl 11 \m 03 15 Elsa• TU14 o-cM _±1 8 mew, ink rmv. S. 144TH STREET 20.0' ROW f VARIES -16.15' MIN 0.50' EX. CURB & GUTTER EX. SLOPE -------- _____ -r EXISTING PAVEMENT 1 EN EX. 12' STORM;:'i EX. GAS UNE -- LvJ VARIES 3.85' MIN 10.0' SIDEWALK & UTIUTY EASEMENT 5.0' 1 1.0' SIDEWALK 2% LziF lvl'•- EX. 8' SEWER MAIN ZI =I 5.0' UTILITY w1 EASEMENT EXISTING GROUND 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 2' OF %' MINUS CRUSHED ROCK S. 144TH STREET SECTION A -A *Qtii\7<W Y., PROPERTY UNE 10.0' SIDEWALK & UTIUTY 0. CC SCALE NONE 20.0' (TRACT 'A') HAMMERHEAD TURNAROUND 10.0' 10.0' 1.5' FLOWUNE 2' CLASS B ASPHALT CONCRETE 5.0' UTIUTY EASEMENT 1Z W EXISTING GROUND SUBGRADE SHALL BE COMPACTED 6' COMPACTED DEPTH TO 95% MAX. DENSITY CRUSHED SURFACING BASE COURSE HAMMERHEAD TURNAROUND C -C SCALE NONE PVT. ACCESS ROAD 25.0' (TRACT 'A') PROPERTY UNE 10.0' SIDEWALK & UTILITY EASEMENT 5.0' SIDEWALK EXISTING GROUND 2' OF %' MINUS CRUSHED ROCK 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 NOTES: 12.0' 12.0' 6' CEMENT CONC. TRAFFIC CURB PER WSDOT STANDARD PLAN F-10.12-00 2% 6 2' CLASS B ASPHALT CONCRETE 1r r -..G�ir$' �� ii . a i �� .rinllirlo 6' COMPACTED DEPTH CRUSHED SURFACING BASE COURSE 5.0' EASEMENT 1.0' SIDEWALK 2% SUBGRADE SHALL BE COMPACTED TO 95% MAX. DENSITY PVT. ACCESS ROAD SECTION B -B SCALE: NONE 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE AND UTIUTY PLANS. 5. SEE SHEET PG2 FOR ROADWAY PROFILES. 1,Z J= W IW 4' CEMENT CONC. SIDEWALK PER CITY OF TUKIMLA STANDARD DWG. RS -11 2" OF %' MINUS CRUSHED ROCK CEMENT CONC. VERTICAL CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 DRIVEWAY APPROACH LOCATION LOT STATION LOT STATION 1 10+65 (LT) 8 11+08 (RT) 7 11+68 (RT) 9 10+69 (RT) HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. PG1 SHEET 4 OF 14 SHEETS 1- LL ceo 0 O H O) o• � LL co co co rn 0 Z Q Z -J0 O >- Q 0� 0 cc trsu L t' oa 6 5 9m �mN '0b E rn nva RE • 9 n u5 F O 0 0 N CO O N 0 z 0 tr X X DESIGNED BY: 0, 0. x m CHECKED BY: 7 O re 0. REVISION DESCRIPTION m 0 ♦w w - Su --A NE1/4, SEC. 22-T23N-R4E, W.M. 144TH STA 5.M4'43.69= EX. CATCH BASIN w STA 10+15.50, 7.0 RT / /ss 0 Su FY w PVT. RD. S 10+00 10 IF 12 0 LOPE 0 1.0% ea m a 506+00 `Cgsg6-TYPE STA 10+126, 12.0' RT W/LOCKING $ANED GRATE 0.7' east Ss 40, ��4 5 W ' 0.2' east o 2� DRAINAGE ---�---- 3 LF 12' 0 PVC 0 0.ok I I I 10.0' SIDEWALIf & UTILITY EASEMENT i(7,037 SQ. FT.) {LOT9 BSBL (TYP) STA CENTER OF 103.50' 587.4910'E 1 I 1 TV W w 26 LF 12" 0 LCPE 0 1.0% 8. 144TH TREET 505+00 CB $5 -TYPE 2, 54' FLOW CONTROL W/SO�ID LOC�CING UD STA 10+54.75, 6.0' RT SEE SH ET DR3 FOR QETAIL g� •_ � •-1 �g cub at 171 7 J 504+00 b N0 ce b3 N0 ce _we.. a..,. eae mr tee ..,2-r Y.; roe. n ms m 6..m 0' RT TANK 8.0' DIA.1 X 115.0' LONG CMP DETENTION TANK \,.SEE SHEET DR3 FOR DETAILS, p (66 .FT., sQ ) 1 CB $3L -TYPE 2 \STA 11+85,/ 12.0' RT W/L)OCKING VANED GRATE I _ 6 SBL (TW) 103.so' LOT8 587.49'10'E \ \ BSBL (TYR, chain !ink fence is 5.3' west ace•� LOT 1 (17,453 SQ. FT.) S.A 11+75, 6.0' RT IA :ic Jest edge concrete is1.1' west TYP 48.2-CARTRID 1ST RMFIL s' W/SOUD LOCKING $T 11+:4, 4.5' RT SHEET DR3 FOR DETAIL est edge concrete is 1.1' west 43 LF\8. 0 PVC \ I \ LC)T 7% \ I (6,598 S. FT.) \ N 9LF6'0SOLID \PVC 0 0.0% =h+ ====. 587'51'- 441 Now , rla arrial tt. 39.00'\ EASEMENT \/ \ CB`#1-TYPE 1 \ STA\100+74, Lir W/L0KING VANI� OR & OIL PVT. ACCESS ROAD INFILTRATION TRENCH (5'W X 20'L X 2'D) 65.00` 'oo lam. - ~I� • m )t I LO (6,629 / / ATER SEQ AT T FT.) WhOCKING VANED BSBL (Tit 6Z 26 ' 15 587'51'43'E 10 LF 6' 0 SOUD PVC TIGHUNE 0 0.0% (TYP) 14 ROOF INFILTRATION TRENCH (LOT 3 -LOT 9) (2 0 3'W X 45'L X 2'D). SEE NOTE 7 (TYP) 8 coat - man One (encs/coma (S -X) adn mt fess 402' oat NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR2 FOR DRAINAGE PROFILES AND DETAILS. 5. SEE SHEET DR3 FOR DETENTION TANK DETAILS. EXISTING GROUND 6. SEE SHEET UT1 & UT2 FOR UTIUTY PLANS. 7. FUTURE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. _ _ _ 8. ALL UTIUTIES TO BE PLACED UNDERGROUND. SEE PLANS 10.0' MIN 5.0' MIN 6' RIGID PERFORATED PIPE 0 0.0% a., INFILTRATION TRENCHES 6. PVC SOUD 0 0.0% N A PLAN VIEW WASHED ROCK 3/4' - 1 1/2' -6' RIGID PERFORATED PIPE 0 0.0% EXISTING GROUND NTS 0 [ROOF DRAIN CATCH BASIN OR AREA DRAIN WITH SOLID UD ROOF DRAIN ROOF DOWN SPOUT WITH OVERFLOW WYE AND SPLASH BLOCK FINE MESH SCREEN ELEVATION VIEW NTS 10.0' MIN BACKFILL 4' SOUD PIPE EXISTING GROUND WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC 6' RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) WASHED ROCK 3/4' - 1 1/2" ROOF/FOOTING INFILTRATION TRENCH O SCALE: NONE HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PVC 90' ELBOW, ROTATE TO FIT (TYP) 6. PVC PIPE 11GHUNE 0 0.0% L___ 6' RIGID PERFORATED PIPE (LEVEL) () C11ON (BETWEEN PERFORATED PIPES) O SCALE: NONE REFERENCE SHEET NO. DR1 SHEET 6 OF 14 SHEETS CO CO 0 rn VJ Q 0� z < 0 z z J - a_a w cc 0 J z cc LL u 0 N LLIN O 0 0 -'0 cc __ Q. a ± ± xx DESIGNED BY: CHECKED BY: Cl cC a REVISION DESCRIPTION rd ›- CO 0 Jan 23, 2010 — 2:30pm NE1/4, SEC. 22-T23N-R4E, W.M. 10.0' SIDEWALK & ulluTY EASEMENT CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. LEGEND PROPERTY UNE - EASEMENT - ROAD CENTERUNE RIGHT-OF-WAY/ADJACENT PROPERTY UNE EX. DECIDUOUS TREE EX. EVERGREEN TREE X TREE TO BE REMOVED O TREE TO BE SAVED I / 1. DIA. X 8' LONG REINFORCED BLACK RUBBER HOSE OR APPROVED EQUAL DO NOT PLACE WOOD CHIPS AGAINST TRUNK OR OVER CROWN OF PLANTS 12 GUAGE GALV. WIRE OR APPROVED SUBSTITUTE TOP OF ROOT BALL TO BE SET AT LEVEL OF THE SURROUNDING SOIL 3' EARTH SAUCER EX. GROUND ep zi.r-iREMOVE BURLAP FROM TOP 1/3 OF ROOT BALL ADD 3' WATERING RING 2'X2 WOOD STAKE OR #6 REBAR FIRM NATIVE SOIL BACKFILL WITH 50% COMPOST/ 50% NATIVE SOIL AND FERTIUZER. SEE NOTE 4 TREE PLANTING DETAIL NTS PLANT SCHEDULE SYMBOL BOTANICAL NAME COMMON NAME QTY SIZE REMARKS PRUNUS CERASIFERA PURPLE -LEAFED PLUM 9 2. CAL (MIN.) B & B 'THUNDERCLOUD. LANDSCAPE NOTES: 1. CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATING WORK WITH OTHER SITE IMPROVEMENTS AND CONDITIONS PRIOR TO STARTING LANDSCAPE WORK. 2. CONTRACTOR SHALL USE CAUTION WHILE EXCAVATING TO AVOID DAMAGE TO UTIUTIES. ADVISE OWNER IMMEDIATELY IF UTIUTIES ARE DISTURBED. CALL LOCATION SERVICE PHONE 1-800-424-5555. 3. CONTRACTOR SHALL BE RESPONSIBLE FOR COMPUTING QUANTITIES OF COMPOST AND MULCH WHERE SHOWN ON THE PLAN. 4. ALL TREES SHALL BE FERTIUZED WITH AGRO TRANSPLANT FERTIUZER 4-2-2 PER MANUFACTURER'S SPECIFICATIONS. 5. ALL PLANT MATERIAL SHALL CONFORM TO AMERICAN STANDARDS FOR NURSERY STOCK, LATEST EDITION. REPLACEMENTS SHALL BE MADE AT ONCE. 6. ALL PLANT MATERIAL FURNISHED SHALL BE HEALTHY REPRESENTATIVES, TYPICAL OF THEIR SPECIES OR VARIETY AND SHALL HAVE A NORMAL GROWTH HABIT. THEY SHALL BE FULL, WELL BRANCHED, WELL PROPORTIONED AND HAVE A VIGOROUS ROOT SYSTEM, AND FREE OF DISEASE, INJURY, INSECTS, DECAY, HARMFUL DEFECTS, AND WEED FREE. SUBSTITUTIONS SHALL NOT BE MADE WITHOUT THE AUTHORIZATION OF THE OWNER OR OWNER'S REPRESENTATIVE. 7. NO PERMANENT IRRIGATION SYSTEM IS PROPOSED. CONTRACTOR SHALL MAINTAIN AND WATER TREES FOR TWO YEARS AFTER FINAL INSPECTION AND ACCEPTANCE BY THE OWNER OR OWNER'S REPRESENTATIVE. -CO STATE OF WASHINGTON REGISTD AP ' HITECT REFERENCE SHEET NO. LD1 SHEET 9 OF 14 SHEETS co CD o J 4 Z Z Z Wo... UJ W CC EL W WCC 0 (.) Z 4 J 1- ., w N m y 0 z o 8 cc 0 DESIGNED BY: < 9 J d x = z m r w U PROJ. MNGR: 4 C) m 0 Jan 23. 2010'— 2: 33pm 1 5`' .10'02'E 310.93' (6,903 SQ. FT ) STA 99+18 n 3 44TH STA 505+43.69= VT. RD. STA 10+04 SSMH A7-3 A 10+04. 1.14' Lt LOT 1 (17,453 SQ. FT.) 14419 122.00' op sOF` LOT 3\N (7,597 SQ. FT.) 'O N01°08'52E '___00'90f- 122.00' STA 99+30 L=17.5' g 88 LF 6' PVC SIDE SS013.05_ 304 00-- 4 `' moo f SIDEWAUC & 207 LF 8' PVC UTIUTY EASEMENT "-- o 0.505 SSMH fl, •' 1-48' 12+17 11+ 1.14' LT STA - y - T-304.00- 1 1ff I 0=7.0' 01'08521'E 169.37 5 11 00 +- - 12+00 LOT 4 (6,731 SQ. FT.) PVT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 / 302.00 -- /STA 98=9=86 I L=15, D=8.0 1n "1p'ZOi -=4 0 7:7,1 3ct)' UTO -17Y EASEMENT EX. GARAGE TO BE DEMOUSKED -Lao 9DEWALK & - - - I UTILITY EASEMENT un 10.0' UTY EASEMENT LOT9 '-- (7,037 SQ FT) - - i2°a ° LOT 8 - - (6,623 5Q. FT.) r - o X300.00- (9 EX. SHED HED PVC TO BE DE/MUS STA 12+061, 1=22.5' 51.5 LF 6' / 561E 5S 0,505 i uTIUTY EASEMENT N01 °0852E 102.00 007102- 00'862- - LOT 5 (6,578 SQ. FT.) i - p'ssz 1 / 00'962- - _ _ _ _ NO1°08'52'E ROW I N ROW \ \` P i 300 295 -- 290 285 I. 0. EX 8' SEWER MAIN EX:SSAHA7-3 1', 1 1 II II I1 I( STA 10+04, 1.14' LT RIM=299.60 10 (8'W)=288.90. IE (8'NE)=288.80 64.00' / ` - N01°08'52'E SEWER PLAN EX GROUND ALONG :: TRACT "At:AM:MEN LOT 7 (6,598 SQ. FT.) l 1 \/ / 1 /$ / / M / A / , 1 i / i7 ' / / 102.00' 78.5 LF 6".RVG-OOZ6L- I 519E SS "O 1.05 rSTA 100+75 / D=2.5' 311.13' SSAH 11, TYPE.1-48' ... STA 12+14, 1.14`"LT RIM=300.87::.... IE ,(8'N)=290.04 IE;(6'E,W,S)=290:14 . ----- APPROX. EX; CAS UNE ss STUB 5T '1 0}3.3 IE (6'W)=288.14 FINISH GRADE:ALONG TRACT 'A6 ALIGNMENT • 207 LF r PVC :0 0.905 SS- STUB ... STAi j1+70 IE (6 E)=289.83 10+00 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 11+00 SEWER PROFILE SS STUB STA 12+00 IE: 6;1'x=289.98. 12+00 HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 I I 1 inch = 20 ft. 1 Inch = 5 ft. - -LOT 6 (6,629 SQ. FT.) 288.00 J • 1 256.00-x' / 102.00' 520..E ‘4:. -- 305 5 A A S 1401H ST PROJECT SITE (-0 5 14419 ST. 5 14819 ST. 5. 150TH ST A 1^ 99 5 15419 51 ASPHALT CONCRETE OR BITUMINOUS PLANT MIX REPLACEMENT PATCH 1505 OF EXISTING DEPTH N w 5. 1541H ST VICINITY MAP NTS LEGAL DESCRIPTION LAT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS. ACCORDING TO 1110 PLAT THEREOF RECORDED IN VOLUME 11 OF PLA1S, PACE(S) 31, RECORDS OF KING COUNTY, WASHINGTON. SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERUNE OF SMITH 144111 STREET NORTH 87'49'10' WEST BETWEEN 42ND AVE SOUTH AND 46111 AVE SOUTH. OWNER INFORMATION 11. INVESTMENT GROUP, LLC 4055 - S 148111 STREET TUKWILA, WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID: 815; POINT NAME 93V-902; 0.5' COPPER PIN WITH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT 111E INTERSECTION OF SOUTH 144111 silo -t9 AND 46111 AVE SOUTH; ELEVATION = 287.900 FEET NAVD88 NOTES: 1. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. REFERENCE SHEET NO. UT1 SHEET 11 OF 14 SHEETS U W > VJ ' ^/ W aW > w CO O LLI o O w N 7 O - N 1-1 300 - '295 5/8' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE CITY SDE SLOPE AS REQUIRED TRACER TAPE TYPICAL PATCH FOR FLEXIBLE E PAVEMBNT NOTES 1. ALL WORK TO CONFORM TO 111E CURRENT WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD, BRIDGE. AND MUNICIPAL CONSTRUCTION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REQUIRED ON ALL PAVEMENT PATCHING AND OVERLAYS 3. CONTROLLED DENSITY ALL IN PLACE OF CRUSHED ROCK MATERIAL MAY BE REQUIRED IN CASES OF RECENT PAVEMENT OVERLAY. OR AS DIRECTED BY CITY ENGINEER. PAVEMENT RESTORATION DETAIL PER CITY OF TUKIWLA STANDARD DWG RS -03 SCALE NONE SAN. SEWER PIPE BEDDING SCALE NONE 0 z OO' -' cc z a DESIGNED BY: z X a aSz m Luc) U CO 0 L:\Working\R09400 — Foster Short Plat\CADD\Drawings\R09400—PS—UT2.dwg Ldyout Nome: Layoutl Jan 23, 2010.— 2:34prn —z -- EX. 10' DI WATER MAIN REMOVE/REPLACE CURB, GUTTER AND SIDEWALK I P-' 1 4052"E 340.93' LOT 2 (6,903 SQ. FT.) W N n LOT 1 (17,453 SQ. FT ) 144TH STA 505+43.59= F( / `OVE RD. STA 10+01 ,• ....` I I INSTALL�34', WATER METER I'. Ea I- AND_ S1:RVICE)JNE `��,206 IF 8' p1 CL 52 • •••'. 10.0' SDEWALK & ' U# EASEMENTT O 1 o , 01"08'51 E 169.371 TRA TRA PVT. A (8,0)1 122.00' LOT 3 N (7,597 SQ. FT.) INSTALL 3' WATER METERS AND SERVICE UNES N01"0852"E Go 9oc_ �u.oa — _ PVT. RD. STA 12+19.04= 00 HAIM 04.00 STA 100+LOT INSTALL Y4' WATER METERS SQ. AND SERVICE UNE 304.00-- -© T ILunuI �. FT.) PAVEMENT RESTORATION PER CITY OF 1UKWILA STANDARD DWG RS -03 WATERMAIN FITTING DATA 0 STA 9+74 (FIELD VERIFY), 11.14' RT INSTALL WET TAP WITH 1-10'x8' TAPPING TEE (MJxFL) 1-8' GATE VALVE (F1.xMJ) 1 -CONCRETE THRUST BLOCK ® STA 11+80. 11.14' LT 1 -FIRE HYD. ASSY (u.» 1-8'x6' TEE (MJxFE) 1-6' GATE VALVE MAO 1-8'x4' REDUCER (FUdIJ) 1-4' GATE VALVE (FIALI) 8 -LF 6' D.L I -CONCRETE THRUST BLOC( O STA 12+32, 11.14' LT 1-4' Di. CAP (MJ) 1-2' PERMANENT BLOW OFF ASSY I -4'x4' VERT. CROSS (MJxMJ) FOR POLY PIGGING I -CONCRETE THRUST BLOC( 295 290 285 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 INSTALL WATER METER _ J AND SERVICE UNE / 1� -16 SIDEWALK & UTILITY EASEMENT 10.0' UTWTY r EASEMENT EX. GARAGE TO BE DEIAOUSHED LOT 9 (7,037 SQ FT ) EDL 8' SEWER MAIN 6&.00' -30C 00 - EX SHED TO BE DEMOUSHED INSTALL )f.' WATER METER AND SERVICE UNE LOT 8 (6,623 SQ. FT.) N P. / 51 IF 4" DI CL 52 /I WATER MAIN , 5.▪ 0' UTRITY EASEMENT X,II 302.00 N01"0852'E 102.00' ▪ r -00'00v- INSTALL Y4' WATER METER AND SERVICE UNE 3:4' UTIUTY EASEMENT I, �0p.96Z— 1 1 __GO P5Z- - N01"0852E- Go'Osz— — LOT 5 (6,578 SQ. FT.) 2°0' 00 • 296 JO-_ 64.00' • N01"0852 E / I / LOT7 (6,598 SQ. FT.) / / / / WATER MAIN PLAN / 20 00' - 00'06Z- �j9151AIL II' WATER METER AND SERVICE UNE 02.00' % •/'LOT 6� / I g 9ppp / (6 629 SQ FT / $ `� / 288.00 - / I / / 2a6.00_ .) 1 • • 520 / 102.00' 311.13' Nig APPROX. EX. GAS UNE -1 (CONTRACTOR TO FIELD VERIFY) - APPROX IX. TV CONDUIT UNE (CONTRACTOR TO FIELD VERIFY) 0 Ex SEWER MAIN 10+00 206 LF 8' -DI OL 52 WATER MAIN. - - 51 LF 4' DI a. 52 WATER MAIN 11+00 WATER MAIN PROFILE HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20 ft. 1 inch = 5 ft. 12+00 NOTES: :295 !290 .:285 U4t 1. CONTRACTOR SHALL FIELD VERIFY ALL GR Es PRIOR TO CONSTRUCTION. EXISTING ASPHALT PAVEMENT NATIVE SUBBASE- NOTES UBBASE— NOTES 1. AU. WORK TO CONFORM TO THE CURRENT WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD. BRIDGE, AND MUNICIPAL CONSTRUCTION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REWIRED ON ALL PAVEMENT PATCHING AND OVERLAYS VICINITY MAP NTS LEGAL DESCRIPTION LOT 6 AND 7, BLOCK 3. ADAMS HOME TRACTS, ACCORDING RECORDED IN VOLUME 11 OF PLATS, PAGE(S) 31, RECORDS SITUATE IN THE CCUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERLINE OF SOUTH 144111 STREET NORTH 42ND AVE SOUTH AND 46TH AVE SOUTH. OWNER INFORMATION 11. INVESTMENT GROUP, LLC 4055 - S. 1481H STREET TUKWILA. WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM TO THE PLAT THEREOF OF KING COUNTY, WASHINGTON. 87'49'10' WEST BETWEEN ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID. 815; POINT NAME 93V-902 0.5' COPPER PIN 16TH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTICN OF SOUTH 144TH STREET AND 461H AVE SOUTH; ELEVATION = 287.900 FEET NAVD88 REFERENCE SHEET NO. UT2 SHEET 12 OF 14 SHEETS O FOW W XIz W CI— _Z 0 Q Q Z L!_ Q W 0 - SAWCUT - ASPHALT CONCRETE OR BITUMINOUS PLANT MIX REPLACEMENT PATCH 150% OF EXISTING DEPTH - SAWCUT •• s .:- i hr iii gpx..e, /% TYPICAL PATCH FOR FLEXIBLE PAVEMENT 3. CONTROLLED DENSITY FILL IN PLACE OF CRUSHED ROOK MATERIAL MAY BE REWIRED IN CASES OF RECENT PAVEMENT OVERLAY, OR AS DIRECTED BY CITY ENGINEER 4614 104444( - EXI511NG BASE 5/8' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE GTY PAVEMENT RESTORATION DETAIL 2, CONTRACTOR SHALL RESTORE CONSTRUCTION AREAS TO EXISTING OR BETTER CONDITIONS PER CITY OF TUKWILA STANDARD DWG RS -03 SCALE NONE CI w 1 0 N N 0 z a O cc 2 a 2 W 0 Q 2 S 0 3 C] U REVISION DESCRIPTION 0 r- 0 m Z j 0 r Short Plot\CADD\Drawings\ROg400—PS— E S. 140TH ST. A PROJECT SITE S. 1441H ST. /= S. 1481H S1 S. 1501H ST. (99 S 15411 ST K S. 1541H ST. VICINITY MAP NTS NOTES: N 'h 1. SITE WORK FOR THIS PROJECT SHALL MEET OR EXCEED CITY OF TUKWILA STANDARDS, 2007 KING COUNTY ROAD STANDARDS AND 1998 KCSWDM WHICH ARE HEREBY REFERENCED AS PART OF THESE PLANS. 2. THE DESIGN SHOWN IS BASED UPON THE ENGINEER'S UNDERSTANDING OF THE EXISTING CONDITIONS. THE PLAN DOES NOT REPRESENT A DETAILED FIELD SURVEY. THE EXISTING CONDITIONS SHOWN ON THIS PLAN SHEET ARE BASED UPON THE SURVEY PREPARED BY SCHROETER SURVEYING, INC. DATED DECEMBER, 2009. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING FIELD CONDITIONS PRIOR TO BIDDING THE PROPOSED SITEWORK IMPROVEMENTS. IF CONFUCTS ARE DISCOVERED, THE CONTRACTOR SHALL NOTIFY THE OWNER PRIOR TO INSTALLATION OF ANY PORTION OF THE SITEWORK WHICH WOULD BE AFFECTED. IF CONTRACTOR DOES NOT ACCEPT EXISTING SURVEY, INCLUDING TOPOGRAPHY AS SHOWN ON THE PLANS, WITHOUT EXCEPTION, HE SHALL HAVE MADE, AT HIS OWN EXPENSE, A TOPOGRAPHIC SURVEY BY A REGISTERED LAND SURVEYOR AND SUBMIT IT TO THE OWNER FOR REVIEW. 3. CAUTION - NOTICE TO CONTRACTOR LOCATIONS SHOWN FOR EXISTING UTIUTIES ARE APPROXIMATE. UTILITIES/SERVICES WATER: GAS: KING COUNTY WATER DISTRICT #125 3460 SOUTH 148TH STREET SEATAC, WA 98188 (206) 242-9547 PUGET SOUND ENERGY 1-800-321-4123 POWER: SEWER: SEATTLE CITY LIGHT (800) 862-1181 VALLEY VIEW SEWER DISTRICT 3460 SOUTH 148TH STREET TUKWILA, WA 98168 (206) 242-3236 QWEST (800) 475-7526 TELEPHONE: FIRE: TUKWILA FIRE DEPARTMENT HEADQUARTERS STATION 51 444 ANDOVER PARK EAST TUKWILA, WA 98188 (206) 575-4404 SCHOOL: TUKWILA SCHOOL DISTRICT #406 4640 S 144TH ST TUKWILA, WA 98168 (206) 901 - 8000 FOSTER SHORT PLAT 44XX /4419 — S. 144TH STREET TUKWILA, WASHINGTON 98168 NE1/4, SEC. 22—T23N—R4E, W.M. LEGAL DESCRIPTION CONSULTANTS LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE(S) 31, RECORDS OF KING COUNTY, WASHINGTON. SITUATED IN THE COUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERUNE OF SOUTH 144TH STREET NORTH 87'49'10" WEST BETWEEN 42ND AVE SOUTH AND 46TH AVE SOUTH. VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID: 815; POINT NAME 93V-902; 0.5" COPPER PIN WITH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 144TH STREET AND 46TH AVEfiSOUTH; ELEVATION = 287.900 FEET NAVD88 DRAWING INDEX REFERENCE SHEET NO. DRAWING TITLE CV ECl EC2 PG1 PG2 DRI DR2 DR3 LD1 LPI UTI UT2 DTI SN1 COVER SHEET TESC PLAN TESC DETAILS ROADWAY PLAN AND SECTIONS ROADWAY PRORLES AND DETAILS DRAINAGE PLAN AND ROOF INFILTRATION DETAILS DRAINAGE PROFILES AND STORMFILTER DETAILS DETENTION TANK PLAN, SECTIONS AND DETAILS TREE RETENTION AND LANDSCAPE PLANTING PLAN STREET LIGHTING PLAN SEWER EXTENSION PLAN AND PROFILE WATER MAIN EXTENSION PLAN AND PROFILE DETAILS 1 STANDARD CONSTRUCTION NOTES OWNER INFORMATION TL INVESTMENT GROUP, LLC 4055 - S. 148TH STREET TUKWILA, WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 CML: PBG, LLC 5130 - S. 166TH LANE SEATAC, WA 98188 (206) 229-6422 CONTACT: HAN PHAN, P.E. SURVEYOR: SCHROETER SURVEYING, INC. (SEE SEPARATE DRAWING) PO BOX 813 SEAHURST, WA 98062 (206) 242-6621 CONTACT: RICHARD SCHROETER, PLS CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. CV SHEET 1 OF 14 SHEETS 1- Cl- F - 0 3-F- 0 C/) w 1-- 0) O LL LU w CO C0 I- _�Q (J) <- 1 J rn Y X ~ X COVER SHEET LEGEND PROPERTY UNE - EASEMENT RIGHT OF WAY CENTERLINE RIGHT OF WAY/ADJACENT PROPERTY UNE — -- —B.S.B.L SD PROPOSED STORM DRAIN SS PROPOSED SANITARY SEWER W — 0-0-0-0— • PROPOSED WATER SERVICE UNE SILT FENCE CLEARING OMITS ASPHALT PAVEMENT CEMENT CONCRETE PAVEMENT PROPOSED STRUCTURE (APPROX. LOCATION) INLET PROTECTION CATCH BASIN -TYPE 1 CORNER SET SIGN AND POST INFILTRATION TEST (APPROX. LOCATION) 0 MH/CB-TYPE2 FIRE HYDRANT WATER METER PROPOSED INFILTRATION TRENCH EDGE OF PAVEMENT SEWER UNE STORM UNE GAS UNE WATER UNE FENCE LINE BUILDING UNE CONTOUR SET REBAR W/CAP #23604 PROPERTY CORNER FOUND THIS SURVEY POWER POLE WITH LIGHT GAS VALVE FIRE HYDRANT WATER VALVE WATER METER CATCH BASIN STORM MANHOLE SEWER MANHOLE POWER POLE DECIDUOUS TREE EVERGREEN TREE ® CITY STREET UGHT RECi IV iSEET UgiT rJAN 2112011 _COMMUNITY < 0 0 CU 1V I C - -1 O o Z o8 cc x DESIGNED BY: a x x 0 CHECKED BY: REVISION DESCRIPTION m w 0 ings\R09400—PS—EC1.d L: \Working\R09400 — E 0 r 507+00 c N 0 0 ce NE1/4, SEC. 22-T23N-R4E, W.M. 1 t* ' - . „ _ .,, . ,;144TH STA 505+43.69.= PVT, RD. STA10+00 CLEARING LIMITS 506+00 -4 o 505+00 I '• t}4 8. 144TH STREET f— TREE TO BE REMOVED 504+00 p she TREE TO BE SAVED (NP) LOT 9 x(7,037 SQ. FT.) TEMPORARY STOCKPILE AREA 103 50' 587.49'10'E 15.0' PVT, -DRAINAGE EASEMENT 10.0' SIDEWALK & UTIUTY EASEMENT CONSTRUCTION 'EN TRANCE 1) 11 I) f EX. COVERED PORCH TO 8E DEMOLISHED ) 10,0' SIDEWALK & ) UTIUTY04, EASEMENT`:;, EX. SHED �p LDg10USHED (6,623 SQ. FT.) PGS5 PMS,A ESQ P � 5 -EX, HOUSE 1.10 REMAIN 75.00' S88.493811 LOT 1 (17,453 SQ. FT.) 103 S0' 'LOT 2 587°49'10'E 'EX. GARAGE TO BE DEMOUSHED EX. DECK ".:' TO BE REMOVED (6,598 SQA 1'.) N PVT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 611 J 82.30' 62.30' /,'r ) TEMPORARY STOCKPILE AREA INLET PROTECTION (TYP) LOT 5 (6,578 SQ. FT.) LOT 4 (6,731 SQ. FT.) LOT 3 .!'.• (7,597 SQ. FT )' • • 8 SEQUENCE OF CONSTRUCTION: 1. FLAG AND STAKE CLEARING UMITS. 2. INSTALL EROSION CONTROL MEASURES (SILT FENCE, ETC.) 3. FIELD LOCATE ALL UTIUTIES. 4. INSTALL CONSTRUCTION ENTRANCE. 5. CLEAR AND GRUB SITE. 6. GRADE THE SITE. 7. INSTALL INFILTRATION TRENCHES, SANITARY SEWERS, STORM, WATER, AND OTHER SITE UTILITIES; PROVIDE CATCH BASIN INLET PROTECTION AT THE NEW INLET LOCATIONS 8. CONSTRUCT BUILDING STRUCTURES. 9. REMOVE TEMPORARY EROSION CONTROL FACIUTY UPON STABIUZATION OF ENTIRE PROJECT SITE, AS APPROVED BY THE CITY OF TUKWILA. NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE AND UTIUTY PLANS. EARTHWORK VOLUME ESTIMATES: LOCATION CUT (CY) FILL (CY) ACCESS ROAD/DRAINAGE FACIUTY 975 185 SET FENCE CiRCUMFEREN;CE -- EQUAL TO OR GREATER THAN RCUMFERENCE OF LRIPL1NE 40 o FT. HIGH CHAIN LINK FENCE -- TO ENCLOSE 'REE EN-IRELY CONCRETE ;, R TREE PROTECTION MEASURES RECEIVED NONE \ECEIVED rJAN.21 20111 COMMUNITY DEVELOPII4ENT 645,� 0' ;` • �• i yr1 S87,51'43'E 15 SILT FENCE (TYP) 257.76— ' <i6.00' o- 14 62.26' 13 HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 I I 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. EC1 SHEET 2 OF 14 SHEETS 1— W Ce J 92 (/) Cfl a = co O 2 CI _J O -. H X TESC PLAN . a1-1 N o O 1r a DESIGNED BY: a co 0 CHECKED BY: REVISION DESCRIPTION CO \CADD\Drawings\R09400—PS—EC2.dwg L:\Working\R09400 — Foster Short E JOINTS IN FILTER FABRIC SHALL BE SPUCED AT POSTS. USE STAPLES, WIRE RINGS, OR EQUIVALENT TO ATTACH FABRIC TO POSTS. Y X Y X 14 GA. WIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED. 6' MAX. POST SPACING MAY BE INCREASED TO 8' IF WIRE BACKING IS USED NOTES: 2* X 4* WOOD POSTS. STEEL FENCE POSTS, REBAR, OR EQUIVALENT FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE. FILTER FABRIC 4' MIN UNDISTURBED GROUND BACKFILL TRENCH WITH NATIVE SOIL OR 3/4* - 1.5* WASHED GRAVEL DESIGN AND INSTALLATION SPECIFICATIONS: MAINTENANCE STANDARDS 1. THE GEOTEXTILE USED MUST MEET THE STANDARDS LISTED BELOW. A COPY OF THE MANUFACTURER'S 1. FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE. ADS (ASTM D-4751) WATER PERMITTIVITY (ASTM D-4491) 30-100 SIEVE SIZE (0.60-0.15mm) FOR SLIT FILM 50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS 0.02 SEC -1 MIN. GRAB TENSILE STRENGTH (ASTM D-4632) = 180 LBS MIN. FOR EXTRA STRENGTH FABRIC 100 LBS MIN. FOR STANDARD STRENGTH FABRIC GRAB TENSILE ELONGATION (ASTM D-4632)= 30% MAX. ULTRAVIOLENT RESISTANCE (ASTM D-4355)= 70% MIN. 2. STANDARD STRENGTH FABRIC REQUIRES HARE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED_FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANT A STRONGER FENCE. 3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL BE NO STEEPER THAN 2H:1V. SILT FENCE DETAIL PER KING COUNTY SWDM FIGURE D.3.3.A SCALE: NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. 2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. 3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCING CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNEUZAT10N OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE AND OR REMOVE THE TRAPPED SEDIMENT. 4. SEDIMENT MUST BE REMOVED MEN IT IS 6' HIGH. 5. IF THE FILTER FABRIC HAS DETERIORATED DUE TO THE ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. MAINTENANCE STANDARDS: 1. ANY ACCUMULATED SEDIMENT ON OR AROUND INLET PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED WITH WATER, AND AU. SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE. 2. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE THIRD OF THE AVAILABLE STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY. 3. REGULAR MAINTENANCE IS CRITICAL FOR CATCH BASIN PROTECTION. UNUKE MANY FORMS OF PROTECTION THAT FAIL GRADUALLY, CATCH BASIN PROTECTION WILL FAIL SUDDENLY AND COMPLETELY IF NOT MAINTAINED PROPERLY. CATCH BASIN GRATE 1111'.'■1111111111111111111■11111!11111111111!111111111111■ 11111111' OVERFLOW FILTER MEDIA FOR DEWATERING POROUS BOTTOM CATCH BASIN INSERT CATCH BASIN SEDIMENT CONTROL SOUD WALLS NOTES: THIS DETAIL IS ONLY SCHEMATIC. ANY INSERT IS ALLOWED THAT HAS A MIN. 0.5 CUBIC FEET OF STORAGE WITH THE MEANS TO DEWATER THE STORED SEDIMENT, PROVIDE AN OVERFLOW, AND CAN BE EASILY MAINTAINED. INLET PROTECTION DETAIL PER KING COUNTY SWDM FIGURE D.3.5.F SCALE: NONE REFERENCE SHEET NO. EC2 SHEET 3 OF 14 SHEETS TESC DETAILS CONTRACTOR TO PROTECT MUD FROM BEING TRACKED ONTO THE PUBLIC ROAD EDGE OF EXISTING PAVEMENT NEW ASPHALT PAVEMENT 100' MIN. INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE / R=25' MIN. DITCH AS PER KING COUNTY ROAD STANDARDS 4* TO 8' QUARRY SPALLS NOTES: GEOTEXTILE UNDERLINE 15' MIN. PROVIDE FULL WIDE OF INGRESS/EGRESS AREA AS PER KING COUNTY ROAD STANDARDS, DRIVEWAYS SHALL BE PAVED TO THE EDGE OF RIGHT-OF-WAY PRIOR TO INSTALLATION OF THE CONSTRUCTION ENTRANCE TO AVOID DAMAGING OF THE ROADWAY. IT IS RECOMMENDED THAT THE ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE ROAD. MAINTENANCE. STANDARDS 1. QUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. 2. IF THE ENTRACE IS NOT PREVENTING SEDIMENT FROM BEGIN TRACTED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE ENTRANCE, OR THE INSTALLATION OF A WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON THE AREA COVERED WITH CRUSHED ROCK, AND WASH WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND. 3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED ON-SITE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET, EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBLIC SAFETY. IF IT IS NECESSARY TO WASH THE STREETS, THE CONSTRUCTION OF A SMALL SUMP SHALL BE CONSIDERED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP. 4. ANY ROCK SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY. 5. IF VEHICLES ARE ENTERING OR EXISTING THE SITE AT POINTS OTHER THAT THE CONSTRUCTION ENTRANCE(S), FENCING (SECTION 5.4.1) SHALL BE INSTALLED ON CONTROL TRAFFIC. CONSTRUCTION ENTRANCE DETAIL CD PER KING COUNTY SWDM FIGURE D.3.4.A SCALE: NONE RECEIVED ►FR1 21 20111 COMMUNITY DEVELOPMENT 0 z z o8 CC DESIGNED BY: 0 CHECKED BY: a x z 0 a REVISION DESCRIPTION 0 0 0 z Layout Name: Layoutl rt Plat\CADD\Dr L: \Working\R09400 NE1/4, SEC. 22-T23N-R4E, W.M. 24' WIDE DRIVEWAY APPROACH --INSTALL STREETV'SIGN•AND ...POST PER CITY OF TUKWILA STANDARD w EX... CURB & GLITTER TOP OF SIDEWALK TQ REMAIN TO MATCH EX. GRADE, ., 15.0' P -VT. DRAINAGE EASEMENT 506«00 INSTALL STREET MONUMENT ifk 144TH STA 565+43.69=® PVL RD.+STA 10+00 REMOVE/REPLACE CURB & GUTTER 505+00 - -, '}- - -BSBL -1 �t5 ,1¢7' �5 �obA"' 5 n N 10.0' SIDEWALK & UTIUTY EASEMENT PROPOSED SINGLE FAMILY RESIDENCE LOT 9 '(7,037 SQ. FT.) �T 1 I 103 50' BSBL 587'49'10"E BSBL (TYP) 100 IID BSBL STA 100+77 END PAVING PROPOSED SINGLE FAMILY RESIDENCE LOT 8 (6,623 SQ. FT.) r. CEMENT CONC. VERT1C)--. CURB & GUTTE+ (W) 103.50 587'49'10"E .0' WIDE SIDEWALK 39.00' 65.00 D SINGLE FAMMILYRESIDENCE'. LOT 7 (6,598 SQ FT.) ENT CONC. VERTICAL CURB & GUTTER 587'51'43"E 44.14 2S EX. MAILBOXES TO BE REMOVED & REPLACED S.144TH STREET g N 0 7 of 1N0 PARKING FIRE LANE' TRAFFIC LETTER (TIP) SEE SHEET PG2 FOR DETAIL :58,749'10"7'-:. ' • '257.87 'STOP,' SIGN SEE DETAIL 11 ON 10.01 SIDEWALK & _UT11JfY. EASEMENT TOP OF SIDEWALK-) HEET DT1 . TO,MATCH 'EX. GRADE. -5.0' WIDE SIDEWALK I= PARKING AREA FOR LOT 1 240': • 18' 'WIDE DRIVEWAY APPROACH Aka LOT 1) EX. HbUSE 18' WIDE DRIVEWAY APPROACH \ TO REMAIN/ (L®8 &:9) 111111 •„ , LOT 1 5.0' WIDE SIDEWALK .INSTALL N.D.CJ3.U. (9) :MAILBOX STRUCTUREP / ti e CEMENT CONC. REVERSED CUCZB 4c GUTTER © { • SID AU( RAMP TYPE 4 2%: 0 ry NO 1 x'50 fs ,C GRA Ott 27.34: 7 DRIVEWAY B L( ) 25 00' 588"49'58"E / LOT 2 (6,903 SQ. FT.) • BSBL (TYPJ STA 99+20.50 END PAVING 587.51'43"E 82.30' ID 1587'51'43"E 100 Oi 0 N 99 N MO P* F1E LEE Ir; 'DRIVEWAY' L - DRIVEWAY' FP�Y' iED�NCE • LOT 6 (6,629 SQ. FT.) 11 -I BSBL TYPE 65.E .... __.._. 8 Q W old o� 12.0' FAMILYRESIDE E SINGLE 50' LOT5 I (6,578 sq. FT.) BSBL (TYP) 64.50' DRIVEWAY 18' WIDE DRIVE, LOT 4, 5 & PVT. RD. STA 12+19.04= L HAMMERHEAD STA 100+00 WIDE SIDtWA.J( PROPOSED SINGLE FAMILY RESIDENCE LOT 4 (6,731 SQA FT.) 1:11 BSBL (TYP) 66.00' AYI A 6230' ROACH PROPOSED SINGLE' FAMILY RESIDENCE LOT 3 (7,597 SQ. FT.),' N BSBL (TIP) 62.26' 15 587°51'43"E 257.76' 14 I S. 144TH STREET 20.0' ROW EXISTING PAVEMENT VARIES -16.15' MIN 6' EX. CURB & GUTTER EX. 1 �� 1 EX. 12' STORM DRAIN -T-1 I 1 EX. GAS UNE L vJ lv)�- EX. 8' SEWER MAIN 10.0' SIDEWALK & UTILITY EASEMENT 2 OF NI' MINUS CRUSHED ROCK 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 CEMENT CONC. REVERSED CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 VARIES 3.85' MIN 5.0' 10.0' SIDEWALK & UTILITY EASEMENT 1.0' SIDEWALK ti• 2% EXISTING GROUND 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 2' OF %" MINUS CRUSHED ROCK S. 144TH STREET SECTION A -A w 0 a SCALE NONE 20.0' (TRACT "A') HAMMERHEAD TURNAROUND 10.0' 2% 2% • JI/:.ar4P�AVASOM .22 no!>IIYlJE7#��` PILP///�i�'!�.rrs�wy�itw�iTiB 10.0' 2" CLASS B ASPHALT CONCRETE PROPERTY UNE wl z� 10.0' SIDEWALK & UTILITY EASEMENT wIN WI 1.0' 5.0' 6' COMPACTED DEPTH CRUSHED SURFACING BASE COURSE PROPERTY UNE 5.0' UTIUTY EASEMENT EXISTING GROUND SUBGRADE SHALL BE COMPACTED TO 95% MAX. DENSITY HAMMERHEAD TURNAROUND C -C PVT. ACCESS ROAD 25.0' (TRACT 'A") SCALE NONE PROPERTY UNE 10.0' SIDEWALK & UTIUTY SIDEWALK 27 12.0' 12.0' 6' 2% 6' 2' CLASS B ASPHALT CONCRETE EASEMENT 5.0' 1.0' SIDEWALK 2% EXISTING GROUND 2' OF 3¢' MINUS CRUSHED ROCK 4' CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 CEMENT CONC. REVERSED CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 PVT. ACCESS ROAD SECTION B -B SCALE NONE 6' COMPACTED DEPTH CRUSHED SURFACING BASE COURSE SUBGRADE SHALL BE COMPACTED TO 95% MAX. DENSITY NOTES 'R,IUoo3 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SNI FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET DR1, UT1 & UT2 FOR DRAINAGE AND UTIUTY PLANS. 5. SEE SHEET PG2 FOR ROADWAY PROFILES. Iz IJ 5- w Iw Iw 4" CEMENT CONC. SIDEWALK PER CITY OF TUKWILA STANDARD DWG. RS -11 2" OF %%' MINUS CRUSHED ROCK CEMENT CONC. VERTICAL CURB & GUTTER PER 2007 KING COUNTY STANDARDS FIGURE 3-002 DRIVEWAY APPROACH LOCATION LOT STATION LOT STATION 1 10+65 (LT) 7 11+68 (RT) 4 99+65 (LT) 8 11+08 (RT) 5 100+28 (LT) 9 10+69 (RT) 6 100+65 (LT) REFERENCE SHEET NO. PG1 SHEET 4 OF 14 SHEETS E -- LU LLJ LL Ce Q U) CL O 2 Ct LIJ I- CI) o) 0 X 0 Z co az J QU 0 CC 0 w N 0 N 0 0 o z o 8 cr Q fl DESIGNED BY: a 2 co CHECKED BY: z 0 d 0 a 0) 1 HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. E IVED IAN' 111 2011 rry ScBVELOPMAlEHT CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 312 308 W Fy 304,-+ CC 300 296 292 DATUM MEV 29000 oi NE1/4, SEC. 22-T23N-R4E, W.M. 10+00 11+00 PVT. ACCESS ROAD PROFILE 12+00 312 308 i 304 300 a 40.00' VC PN STA = 100+37 PN ELEV = 299.06 *0 -5.81 K = 6.89 296 292, DATUM BLIT 29000 criCa 00X 6.1 FINISH GRADE N y'�,� 11 S �rao DL GROUND -(TW) f- FINISH GIRAPE (IFP) EX. GROUND 1 1 <� �• � .1 O E 2< ' • I 50.00' VC cn N _HIGFLPDINLElEV HIGH PVI = 19 03— j 'POINT STA = 10+83.45 STA = 10+62.30 P8 ELEV=30215—n I A.D. _ -6.50 Km7:69 R g N i $ ON <N aa,<..aad eN ` -4,;I-92 o Nnin m o I ' 2._ 2 •O +< Flt -•-? z aa i m — g TTGR7ADE - -- 1 �� ; -� Ex GROUND 1 H &g 9X4 a I ��.� _...------EK-GROUND-(TYP}- FINISH GRADE.(TW)__. OOX 3'9' -----... .-,g N; NF.7. 711 o^ m N 10+00 11+00 PVT. ACCESS ROAD PROFILE 12+00 312 308 i 304 300 a 40.00' VC PN STA = 100+37 PN ELEV = 299.06 *0 -5.81 K = 6.89 296 292, DATUM BLIT 29000 criCa 00X 6.1 FINISH GRADE N y'�,� 11 S �rao DL GROUND -(TW) f- FINISH GIRAPE (IFP) EX. GROUND 1 1 <� �• � 'r''!a n 0 �� N N cn N 99+00 100+00 HAMMERHEAD TURNAROUND PROFILE 101+00 VERTICAL GRAPHIC SCALE 5 2.5 0 2.5 5 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. REFERENCE SHEET NO. PG2 SHEET 5 OF 14 SHEETS J CL 1— O 0) w 0) 0 LL 1- w Nw (1) X X 0cnz W J co CC_1 LL W 0 M0 CEMENT CONCRETE SIDEWALK RAMP 3/8" EXPANSION JOINT SIDEWALK RADIUS POINT OF CURB RETURN 7.0' AMP CEMENT CONCRETE PEDESTRIAN CURB 2.0' CURB AND GUTTER 3/8" EXPANSION JOINT CEMENT CONCRETE SIDEWALK DETECTABLE WARNING PATTERN (SEE DETAIL) 7.61' LANDING PLAN VIEW SIDEWALK RAMP PLAN r—o" LANDING DETECTABLE WARNING PATTERN (SEE DETAIL) SECTION OB SIDEWALK RAMP TYPE 4A DETAIL 0 PER WSDOT STANDARD PLAN F-40.16-00 TOP OF ROADWAY DEPRESSED CURB & GUTTER DETECTABLE WARNING PATTERN SEE NOTE 5 MIN. MAX. A 1 5/8" 2 3/8" B 5/8" 1 1/2" C 7/16" 3/4" D 7/8" 1-7/16" ELEVATION TRUNCATED DOMES DETECTABLE WARNING PATTERN DETAIL 5-0" 2X MAX. i0 CEMENT CONCRETE SIDEWALK SECTION TOP OF ROADWAY CEMENT CONCRETE CURB & GUTTER CEMENT CONCRETE PEDESTRIAN CURB SCALE: NONE TOP OF ROADWAY CEMENT CONCRETE CURB & GUTTER NOTES 1. AVOID PLACING DRAINAGE STRUCTURES, JUNCTION BOXES OR OTHER OBSTRUCTIONS IN FRONT OF RAMP ACCESS AREAS. 2. RAMP SLOPES SHALL NOT BE STEEPER THAN 12H:1V. 3. SEE SIDEWALK SPACING EXPANSION JOINTS AND SCORE MARK DETAIL FOR ADDTIONAL NOTES. 4. THE BOTTOM OF THE RAMP SHALL HAVE A LEVEL AREA (NOT IN EXCESS OF 2X IN ANY DIRECTION). 4' X 4' 5. DETECTABLE WARNING PA17ERNS (TRUNCATED DOMES) MUST BE PRECAST PAVERS MEETING ASTM C902 CLASS SX TYPE 1 OR :?3.5 OR C1272 TYPE R. ACCEPTABLE MANUFACTURERS AND PRODUCTS ARE a) ADA PAVERS AS MANUFACTURED BY WHITACRE-GREER, AS DESCRIBED ON THEIR WEBSITEhttp://www.riparer.com/ada_brochure.pdf (BRICK RED) b) ARMORTILE AS MANUFACTURED BY ARMOR -TILE TACTILE SYSTEMS, AS DESCRIBED ON THEIR WEBSITE:http://www.arrnar-t8e.com/truncateddome/cast-in.place.htm/Cast201nX20PIaceX20Colars (BRICK RED) c) ASTINTACT WARNING PANELS AS MANUFACTURED BY MASON SUPPLY CO. OF PORTLAND, OR, AS DESCRIBED ON THEIR WEBSITE http://www.masco.net/castintact/ (BRICK RED) d) STEP.SAFE AS MANUFACTURED BY TRANSPO INDUSTRIES, INC. OF NEW ROCHELLE, NY, AS DESCRIBED ON THEIR WEBSITE http://www.transpa.com/Step-Safe.htm (BRICK RED) 0.05 FT. FT. 3/8" EXPANSION JOINT CEMENT CONCRETE SIDEWALK Eo 0.02 FT./FT. *NOTE: TOP OF UP AT DRIVEWAY APPROACH CEMENT CONC. VERTICAL CURB AND GUTTER DETAIL PER 2007 KING COUNTY ROAD DESIGN AND CONSTRUCTION STANDARDS FIGURE 3-002 SCALE: NONE w ti N 6 LNO PARKING FIRE LANE NOTES 1. DESIGNED FIRE LANE LETTERS SHALL BE PAINTED IN YELLOW. 2. "NO PARKING FIRE LANE" SHALL BE PLACED 50 FEET CENTER TO CENTER TRAFFIC LETTER DETAILS SCALE: NONE NOTES: 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SEE SHEET SN1 FOR STANDARD CITY OF TUKWILA CONSTRUCTION NOTES. 4. SEE SHEET PG1 FOR ROADWAY PLAN AND SECTIONS. 0 m O a x CC Z O 2d a x 0 T 0 6 0 0 ce a 0 U RCEIVED 'JAN 21 20111 CO 0 OPNrT CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 LAWorking\R09400 — Foster Short Plot \CAM Vrawings\R09400—PS-0121.dwg Loyout Name: Loyoutl Jan 11, 2011 — 9:49pm NE1/4, SEC. 22-T23N-R4E, W.M. w • CB if8. TYPE 1- - - cB #6- -TYPE 2 (48") STA 10+26. 12.25RT WAOCK1NG VANED GRATE STA 2+08.50, 9.75 RT 507+00 W/LOCKING VANED GRATE / 506+00 • :,. IS 12" 0 DI ,.... - - 95 LF 12' 0 ADS' Ni2 • 0 0.50% .3 _.o q.5oz 144TH STA 43.69= PvT. RD. S 10+00 26 LF 12 0 PVC 0 0.50% 505+00 5. 14471-I STREET CB g5 -TYPE 2, se FLOW CONTROL W/SOUD LOCKING UD • STA 10+54.75. 6.0' RT .et -E SfiET DR3 FOR DETAIL 504+00 00 • u...., .,, .....\,. 7,•;: :.`,: • ' " ''''` \ ce p-TyPE 1 STA 2+08.50, CL W/SOUD\ LOCKING UD 15.0' FRIVATE DRAINAGE EASEMENT 10 LF e 0 ADS N12 ROOF DRAIN STUB 0 0.50% MIN. , C8 _#9-.PP.E' STA 2+70.50, CL W/SCUD LOCKING UD 10 LF 6* 0 ADS N12 ROOF DRAIN ST1,IB 0 0.50% MIN. 3 LF 12- 0 PVC ,0 0.0% \ 10.0' SIDEWALK & UTILITY EASEMENT LOT 9 ,(7,037 SQ. FT) STA 10+60, 8.0' RT CENTER OF TANK 1,40' SIDEwALX & _EASEMENT 10 LF 6' saliG-ek 11GHUNEA 0.0% LOT 2 ROOF-iNfiLTRATMN TRENCH ,r72 -4-314i iiVL X SEE ▪ MP? .40 10,t1IS B #1 -TYPE 1 STA 100+74, 9.25' LT t,, WAOCKING VANED GRATE IX & OIL/WATER SEFfARATOR W/FINE MESH SCREEN '• TO BE CONNECTED TO PERFORATED TiGHTUNE STUB OUT LOT 8 (6,623 SQ FT.) 70 if 15" 0 DI ROOF 'DRAIN STUB (LOT 7) 0 0.50% CB p -TYPE 2 , STA 11+85, 11.25' RT • w/LOCKING VANED GRATE 6 103.50' 587°4910T 8.0' 01A. X 115.0' LONG CMP,DETENTiON TANK SEE SHEET 0R2 F1 DETAILS 25.00' .4958•Ei ,, • :::.:, LOT 1 ; 1 (17,453 SQ. FT.) ...:, • STA 11+75, 8.0' RT C.cNTER OF TANK . : ••4••••'. • Ef LF 12" 0 Pvc ;! ,1',,•° .•-••---•; 61.o% :),.. •• 'B#4-TYPE12, 48' 2-CARTRIDGS STORNFILTER W/SOUD LOCKING/Lfb STA 11+0, 5.0' RT ;• SEE SHET DR3 FOR DETAIL., ;•• C :•• • ••.• we •-= IV LOT (6,903 SQ. FT 44 LF 8". Lobs (6,598 SQ. DS N12 0.50% ••••7 "". 587.51'43.E 82.30' PVT. ACCESS ROAD/LOT 6 INFILTRATION TRENCH (2 0 3'W X 30'L X 2'D) (3'W X 20'L X2'D) 3, LF Ir PV0 05.O% CB ,#2 -TYPE STA 12+27, 30.0' RT W/LOCKING VANED GRATE LOT 6 (6,629 SQ. FT.) 8 e hen 11, . , ci VT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 LOT 4 (6,731 alL Fr., NOTES: SEE PLANS 10.0' MIN 5.0' MIN 6' RIGID PERFORATED PIPE 0 0.0% INFILTRATION TRENCHES r47..r.tvrzt.•:-,•••-••--, • „wary. „ • • t' t.i474.1A7ZA:n47.."3w ", '*•-*',-•' :r:VZt.• :?..• ••••• , a:o....tot .-" 1 P.; 15.13V2::::NiaRZifiRRFAiral;55.14E' 45,•'4,0.zzavgrAgrx:nr.'„x4v.zto,:rgalgiti.: r PVC SOUD 0 0.0% PLAN VIEW NTS WASHED Rea< 3/4" - 1 1/2" 6' RIGID PERFORATED PIPE 0 0.0% EXISTING GROUND ROOF DRAIN CATCH BASIN OR AREA DRAIN WITH SOLD UD ROOF DRAIN ROOF DOWN SPOUT WITH OVERFLOW WYE AND SPLASH BLOCK IfT.cc.?..414V1X4',1.7.74:1W47.74.11.7n41,74.4,,. ef'2.74.757.-,R!,17274? ‘::`4"4;:4'"":"1. Aef.,,,V.V.V,..14. FINE MESH SCREEN ELEVATION VIEW NTS e SOUD PIPE EXISTING GROUND WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC e RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) WASHED ROCK 3/e - 1 1/2" ROOF/FOOTING INFILTRATION TRENCH 0 SCALE NONE 1. SEE SHEET CV FOR LEGEND. 2. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. 3. SE SHEET SN1 FOR STANDARD CITY OF ILIKIMLA CONSTRUCTION NOTES. 4. SEE SHEET DR2 FOR DRAINAGE PROFILES AND DETAILS. 5. SEE SHEET DR3 FOR DETENTION TANK DETAILS. 6. SEE SHEET UT1 & UT2 FOR UTILITY PLANS. 7. FlYRJRE HOUSE FOOTING NEED TO BE A MINIMUM OF 15 FEET FROM PROPOSED INFILTRATION TRENCH. 8. ALL UTIURES TO BE PLACED UNDERGROUND. EXISTING GROUND -25776' ROOF INFILTRATION TRENCH (3'w X 45'L X 2.0) SEE NOTE 7 15 10 LF r 0 SOUD PVC liGHLINE 0 0.0% (TYP) 14 ROOF INFILTRATION TRENCH (LOT 3 -LOT 5) (2 0 3'W X 45'L X 2'D). SEE NOTE 7 (TYP) - HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 ft. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 r - - (A043 L PVC 90' ELBOW, ROTATE TO FIT (TYP) r PVC PIPE TiGHUNE 0 0.0% r RIGID PERFORATED PIPE (LEVEL) (TP) END CONNECTION (BETWEEN PERFORATED PIPES) SCALE NONE C.) R REFERENCE SHEET NO. DR1 SHEET 6 OF 14 SHEETS w w cnOt:C C/) Ce L.1.3 Cr) 0 -- Li_ CC) co CT) -J 1- --J .(C W <0 Z z < --J 0- P0 w cc o -1 Z < Z CC 0 IL 0 0 cc LLI 0 zd R- 8 cr X X DESIGNED BY: a. X CHECKED BY: a_ REVISION DESCRIPTION EC El V E D jAt21-20111 alOMMUNITY DEMELOPMENT Layout Name: Loyoull Han Phon L:\Working\R09400 — Foster Short Plat \CAOD\Oro 3 CB STYPE 2. 54' FLOW CONTROL ''IG 8= 043 1) STORMFILTER BY CONTECH STORMWATER SOLUTIONS: PORTLAND. OR (8001 548-4667; SCARBOROUGH, ME 18:":) 907,3676 LINTHICUM, MD (866) 740-3318. 2) FILTER CARTRIDGE(5) TO BE SIPHON -ACTUATED A140 SELF-CLEANING. STANDARD DETN1 SHOWS MAXIMUM NUMBED OF CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPECIFIED ON SITE PLANS OR IN DATA TABLE BELOW. 3) PRECAST MANHOLE STRUCTURE TO BE CONSTRUCTED 1N ACCORDANCE WATH ASTM C478. DETAIL REFLECTS 2 01 INTENT ON(8. ACTUAL DIMENSIONS AND CONFIGURATION OF STRUCTURE WILL BE SP.OWN ON PRODUCDON SHOP DRAWING 4) STRUCTURE AND ACCESS COVERS TO MEET AA5HTO 11-20 LOAD RATING. 5) FOR. LOW DROP CARTRIDGE. DROP REQUIRED 15 1.8', FOR I8' CARTRIDGE. DROP REQUIRED 15 2 3', FOR 27' CARTE DGE DROP REQUIRED 15 3.05'. MINIMUM ANGLE BETWEEN INLET AND OUTLET 15 45'. 6) INLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED 138 CONTRACTOR. PRECAST MANHOLE 5808(2))' "'EP. EQVIPPED WITH A DUAL DIAMETER. HDPE OUTLET STUB AND SAND COLLAR EIGHT INCH DIAMETER OUTLET SECTION MAY B' : -J'o ATEO FROM OUTLET STUB AT MOLDED -IN CUT UNE TO ACCOMMODATE A I2 INCH OUTLET PIPE. CONNECTION TO DOWN51 PE AM P'P810 TO BE MADE USING A FLEXIBLE COUPLING OR ECCENTRIC REDUCER, A5 REQUIRED. COUPLING BY FERNCO OR EQUAL A1.2 PROVIDED BY CONTRACTOR 7) PROVIDE MINIMUM CLEARANCE FOR MAINTENANCE ACCESS IFA SHALLOWER SYSTEM 15 REQUIRED, CONTACT CON7510 STORMWATER 501(820NS FOR OTHER OPTIONS. 8) ANTI -FLOTATION BALLAST TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR, IF REQUIRED. BALLAST 10 (35 5EE AROUND THE PERIMETER OF THE STRUCTURE. 9) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR M_,_ INFORMATION. STA 10+54.758.0- RT PRECAST MANHOLE STORMPILTER DATA CB -TYPE 2. 48' STORMFILTER STRUCTURE ID /< RIM ELEV=301.38 0 56 11,4 STA 11+85. 5.0' RT 1 CB i3 -TYPE 1 PEAR FLOW RATE )0) cls) r 1 0 IN (S29250A-11+85:-H.25' IE OUT N)=294.00 EX GROUND ALONq RIM ' -u 1 IE IN (110=)295.83 OF CARTRIDGES REQUIRED RT RIM ELEV=300.78 tE IN ( 29578 4 I CB - -TYPE 2 (48') TRACT A WOMEN FINISH GRADE ALONG IE -OUT (N)=292.58 IE OUT (E 295.78 CB /Z -TWE 1 STA RT_= STA 10+26, 12.25 RT PIPE DATA: TRACT 'A' ALIGNMENT 1 INLET PIPE 4I -12+27.-3120. STA 100+30, 9.25' LT 180' RIM ELEV=299.73 ----- MANHOLE STORMFILTER - TOP VIEW O [LEY=299.2 zvi 296 292 288 : 1EIN-S B7 - IE CUT (W)=293.87- 2 ECCENTRIC REDUCER '•LSWO 517E (BY CONTRACTOR -RIM IE OUT (NE)=296.00 / ANTI -FLOTATION BALLAST WON, I 75)051 OUTLET BSER OUTLETLD20. STUBryaMOLDED-IN _I1218 CUT UNE 8'0 OUTLET STUB i -- - tp oo' iIiuIIIIIiIi . OUTLET PIPE MMM Ler CONTRACTOR) COUPLING _ (BY 14016 ) BALL(SEE NOTE 6) AST GROUT (SEE NOTE 8) (BY CONTRACTOR/ 1l7 510RAP2RP u81187,44NT 5 32' 622 No. 5.70) 5. No MANHOLE STORMFILTER - OUTLET DETAIL ob 6 027 L39 No. 11,8.9.0110, Na 5.6 4.571. 2 AND 0:I7o U.5. AND 1877GN O 02006 CONTECH Storrnwate2 SDlutIons PA18115 PENDING _ 1 PRECAST 48" MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL DRAWING 2 A_► IT!A_IJ" _ a6ri _'' 'ill STORIVIWALW1ONS_ ant*n ohlr.oa7 DATE 0301305 1SCALE:NOM IFLE NANE NNSPN=x,On 1DRAWrrrum ILAaaan:Am CMP DETENTION TANK SEE SHEET DR3 FOR DETAILS J _ 1F 8' 0 ADS N12 0 0,50% - 31F8'•PVC05.0% 26 LF 12 0 PVC 0 0.50% EX. GROUND -3LF12'• PVC 00.0%1 rr FINISH GRADE (TW) 8 LF /2' 0 1.0% • PVC N . '1M .001 Nps M OMj h2. 5 1.•7 -N n2r5 N N ci M 10+00 11+00 DRAINAGE PROFILE ALONG TRACT °A' HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2.5 0 2.5 5 1 inch = 20 ft. 1 inch = 5 ft. 12+00 312 308 304 300 296 292 roi 01 FINISH GRADE CB /9-1YPE 1 STA 2+70.50,1 CENTERUNE RIM ETEV-298.00 IE OUT (N)-293.70 IEIN (S.SE.NE)=293.70 CB p -TWE 1 STA 2+08.50. CENTERUNE RIM ELEV-296.00 IE 017 (N)=293.40 1E 941 E. ...293:40_.. 4 0 70 LF 6 0 DI ROOF DRAIN STUB (LOT 7) 0 0.50X 59 LF 8' 0 ADS ji12 O 0.50% CB /6 -TYPE 2 (48') STA 1+1225 CENTERLINE i RIM EL((EV-299.73 10 0)31S 293.87 95 LF 12'•ADS N12 O 0.50% CB j8 -TYPE 1 STA 2+08:50' 9.75RT -- RIM ELEV=295 75 EX -.0..01E 4293.02. EX IE IN (E)=293.37 10 IN (S)=293.37 59 LF 8' 0 ADS N12 0 0.50% 7 II 12- 0 DI 0 0.50% CO 01 O1CN cn N 3+00 304 300 296 292 288 284 280 2+00 1+00 DRAINAGE PROFILE ALONG NORTH AND SOUTH SIDES HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 2 5 0 2.5 5 1 inch = 20 11 1 inch = 5 ft. REFERENCE SHEET NO. DR2 SHEET 7 OF 14 SHEETS 0 co Z Q Q J_ W Lo ^^0 cc V Z CC Q O CC 0 vJ 48' 0 INLET PIPE (SEE NOTES 5 4 6) BALLAST (SEE NOTE 8) 8'712 0 HDPE OUTLET STUB (SEE NOTES 5 4 6) MANHOLE STORMFILTER - PLAN VIEW 11 1 CONCRETE GRADE RING STEP (EYP) INLET PIPE (SEE NOTES 5 4 6) STORMFILTER CARTRIDGE (FM(5E2 NOTE 2) BALLAST (562 NOTE 8) HEIGHT 3010 FRAME AND COVER (STD) (SEE NOTE 4) HDPE OUTLET RISER WITH SCUM BAFFLE 4'-6 MIN (SEE NOR 7) WIDTH UNDERDRIN MANIFOLD SEE DETNL 2/2 MANHOLE STORMFILTER - SECTION VIEW OA 1 02006 CONTECH Stormwater Solutions 15[ 51ownWARR 2AANAc5A011 5,a -Faro. U.S. PARA/ No. 5.32 .629. No. 5.707.527. No. G.027.05 No. G.G49.W0. No. 5.024,570. AND 011102AN R U.5. D P 0.1 PATENTS PENDING A uTewu' Ud 4P:`e i =V: STORMWATER SOLUTIONS - .corn PRECAST 48" MANHOLE STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL RUMOR DATE:e5DRW I3012: NONE FILe N.Ne: r415F1.0Pw1L IDRAWN:N,W IONECIED:AAR GENERAL NOTES 1) STORMFILTER BY CONTECH STORMWATER SOLUTIONS: PORTLAND. OR (8001 548-4667; SCARBOROUGH, ME 18:":) 907,3676 LINTHICUM, MD (866) 740-3318. 2) FILTER CARTRIDGE(5) TO BE SIPHON -ACTUATED A140 SELF-CLEANING. STANDARD DETN1 SHOWS MAXIMUM NUMBED OF CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPECIFIED ON SITE PLANS OR IN DATA TABLE BELOW. 3) PRECAST MANHOLE STRUCTURE TO BE CONSTRUCTED 1N ACCORDANCE WATH ASTM C478. DETAIL REFLECTS 2 01 INTENT ON(8. ACTUAL DIMENSIONS AND CONFIGURATION OF STRUCTURE WILL BE SP.OWN ON PRODUCDON SHOP DRAWING 4) STRUCTURE AND ACCESS COVERS TO MEET AA5HTO 11-20 LOAD RATING. 5) FOR. LOW DROP CARTRIDGE. DROP REQUIRED 15 1.8', FOR I8' CARTRIDGE. DROP REQUIRED 15 2 3', FOR 27' CARTE DGE DROP REQUIRED 15 3.05'. MINIMUM ANGLE BETWEEN INLET AND OUTLET 15 45'. 6) INLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED 138 CONTRACTOR. PRECAST MANHOLE 5808(2))' "'EP. EQVIPPED WITH A DUAL DIAMETER. HDPE OUTLET STUB AND SAND COLLAR EIGHT INCH DIAMETER OUTLET SECTION MAY B' : -J'o ATEO FROM OUTLET STUB AT MOLDED -IN CUT UNE TO ACCOMMODATE A I2 INCH OUTLET PIPE. CONNECTION TO DOWN51 PE AM P'P810 TO BE MADE USING A FLEXIBLE COUPLING OR ECCENTRIC REDUCER, A5 REQUIRED. COUPLING BY FERNCO OR EQUAL A1.2 PROVIDED BY CONTRACTOR 7) PROVIDE MINIMUM CLEARANCE FOR MAINTENANCE ACCESS IFA SHALLOWER SYSTEM 15 REQUIRED, CONTACT CON7510 STORMWATER 501(820NS FOR OTHER OPTIONS. 8) ANTI -FLOTATION BALLAST TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR, IF REQUIRED. BALLAST 10 (35 5EE AROUND THE PERIMETER OF THE STRUCTURE. 9) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR M_,_ INFORMATION. 30.0 FRAME PRECAST MANHOLE STORMPILTER DATA 0528 \1 AND COVER (STD) STRUCTURE ID /< WATER OUAUTY FLOW RATE (ch) 0 56 PEAR FLOW RATE )0) cls) 0 730 RETURN PERIOD OF PEAK FLOW (y») 2 OF CARTRIDGES REQUIRED 2 CARTRIDGE FLOW RATE 15 MEDIA TYPE (CSF, PERLIT , ZPG) 280 RIM ELEVATION 30) 44 PIPE DATA: I.E. ORIENTATION MAIM ,» DIAMETER INLET PIPE 4I 294.38' 180' PVC 5' INLET PIPE 42 MANHOLE STORMFILTER - TOP VIEW O OUTLET STUB 292.58' 90' PVC 12' 2 ECCENTRIC REDUCER '•LSWO 517E (BY CONTRACTOR WA SAND COLLAR ANTI -FLOTATION BALLAST WON, I 75)051 OUTLET BSER OUTLETLD20. STUBryaMOLDED-IN _I1218 CUT UNE 8'0 OUTLET STUB i NOTESSPECIAL REQUIREMENTS: 1B0' PI. E CPENI(A2ON 13'AI tp oo' iIiuIIIIIiIi . OUTLET PIPE MMM Ler CONTRACTOR) COUPLING _ (BY 14016 ) BALL(SEE NOTE 6) AST GROUT (SEE NOTE 8) (BY CONTRACTOR/ 1l7 510RAP2RP u81187,44NT 5 32' 622 No. 5.70) 5. No MANHOLE STORMFILTER - OUTLET DETAIL ob 6 027 L39 No. 11,8.9.0110, Na 5.6 4.571. 2 AND 0:I7o U.5. AND 1877GN O 02006 CONTECH Storrnwate2 SDlutIons PA18115 PENDING PRECAST 48" MANHOLE STORMFILTER TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL DRAWING 2 A_► IT!A_IJ" _ a6ri _'' 'ill STORIVIWALW1ONS_ ant*n ohlr.oa7 DATE 0301305 1SCALE:NOM IFLE NANE NNSPN=x,On 1DRAWrrrum ILAaaan:Am STORMFILTER DETAILS Cll) lb° 4j3 SCALE: NONE EXISTING GROUND WASHED ROCK 3/4' - 1 1/2' (TM) LOT 6 AND PVT. ACCESS RD. INFILTRATION TRENCH O SCALE: NONE CB I1 -TYPE 1 STA 100+74, 9.25' LT RIM ELEV=294.5 300_1E _OUT -(W)=_289.5 _ 5.5 LF 6'0SOUD ADS N12 0 0.0% =PVT.-ACCESS ROAD/LOT 6 INFILTRATION TRENCH - 480170M ELEV=288.5) I TO INFILTRATION TRENCH 296; - EX. II GROUND \ 2921 FINISH GRADE WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC (TYP) 6" RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) VANED GRATE 80 LF 6"' 0 PERF. ADS N12 O 0.0% 288 - 01 a 01 N CV 01 100+50 101+00 W .-4 a N .-H 2 03 8 cc x a DESIGNED BY: a S CHECKED BY: 0 K CD 2 0 a r o OIL COLLECTION RillrertiMMM. CE1VE 68 CATCH BASIN 'N CA + I ROAD OIL/WATER SEPARATOR CB OMMS NiTY SCALE NONE O C _ p m> - SEDIMENT SEDIMENT COLLECTION PVT. ACCESS ROAD HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE INFILTRATION TRENCH PROFILE 20 10 0 10 20 5 2 5 0 2.5 1 inch = 20 ft 1 inch = 5 ft CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 D► LLI 0 0 z 0 0 Foster Short Plot \CADD\Orowings\R09400—PS—DRJ.dwg E PROVIDE CONFINED SPACE SIGN PER OSHA REQUIREMENT (TYP. ALL RISERS) ELBOW RESTRICTOR, SEE DETAIL to 18" DIA CMP FABRICATED TEE AND RISER (ALUMINUM) 3"X0.90" ALUMINUM PIPE SUPPORT STRAP SPACED AT 3.0'. ANCHOR TO WALL WITH %" STAINLESS ANCHOR BOLT 1.0' MIN ROUND MANHOLE COVER MARKED "DRAIN" WITH LOCKING BOLTS CMP COUPLING—' IE (OUT)= 294.00 12" REMOVABLE SECTION OF RISER TO BE ATTACHED WITH GASKETED BAND RESTRICTOR PLATE 1.05' ORIFICE EL= 291.50 2.0' MIN CLEARANCE TO ANY PORTION OF FROP-T INCLUDING ELBOWS OUTLET TO CB116 ELBOW RESTRICTOR SEE DETAIL 2.0' MIN FINISH GRADE C 100 YR MAX W.S. ELEV= 298.50 HANDHOLDS, STEPS OR LADDER MEETING ALL REQUIREMENTS OF KING COUNTY STD. FIGURE 7-006 UFT HANDLE EXTEND TO MH COVER SHEAR GATE WITH CONTROL ROD FOR CLEANOUT/DRAIN PER KING COUNTY STD. FIGURE 7-026 INLET PIPE N A • A REMOVABLE WATERTIGHT COUPUNG OR FLANGE SECTION NTS 6' MAX PLATE WELDED TO ELBOW WITH 1.15" ORIFICE, ELEV= 294.75 ELBOW RESTRICTOR DETAIL NTS CB #5, TYPE 2-54' DIA \—IE (IN)= 292.50 INFLOW FROM DETENTION TANK PLAN VIEW NTS NOTES: LOCATE LADDER & COVER TO PROVIDE 2.0' CLEARANCE FROM LADDER TO TEE AND PIPES. CB #5 TYPE 2-54' FLOW CONTROL STRUCTURE DETAIL O SCALE: NONE Ait__ alb TO 8.0' DIA BULKHEAD CB #5 TYPE 2-541\ FINISH GRADE CB g5 TYPE 2-54' FLOW CONTROL STRUCTURE SEE DETAIL THIS SHEET OUTLET TO _CB #6 36' ACCESS RISERS COMPACTED BACKFILL 3/4" - 1 1/2" WASHED ROCK BACKFILL FOR DRAINS 2.0' MIN B 115.0' 15.0' 5 0 20.0' 36' RISER F 50.0' 8.0' DIA BULKHEAD BANDS (TTP) PLAN NTS 115.0' CB #4 TYPE 2-48' 8.0' DIA CMP DETENTION TANK PER CONTECH 36" ACCESS RISERS WITH LADDER (TYP) MEETING ALL REQUIREMENTS OF KING COUNTY STD. FIGURE 7-006 DESIGN MWSE=298.50 8.0' DIA CMP DETENTION TANK TOP ELEV=299.00 BOTTOM ELEV=291.00 — — — — - 6' FREEBOARD- - o STORAGE DEPTH SII — 3 LF 12" PVC 6' SEDIMENT STORAGE SECTION A -A NTS PVT. ACCESS ROAD FINISH GRADE SEE PG1 FOR ROADWAY SECTIONS TANK TOP ELEV=299.00 8.0' DIA CMP TANK TANK BOTTOM ELEV=291.00 SECTION B -B NTS NOTES: —8 LF 12" PVC CB 114 TYPE 2-48" STORMFILTER [SEE DETAIL ON SHEET DR1 INLET FROM d CB #3 0 -Cf30 R 1. ALL METAL PARTS CORROSION RESISTANT. STEEL PARTS GALVANIZED AND ASPHALT COATED J (TREATMENT 1 OR BETTER). 2. IF THE CONTRACTOR SEEKS TO USE A DIFFERENT PRODUCT THAN CONTECH, CONTRACTOR MUST SUBMIT A REVISION TO CITY OF TUKW1LA PUBLIC WORKS FOR REVIEW AND APPROVAL DETENTION TANK DETAIL O SCALE: NONE CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. DR3 SHEET 8 OF 14 SHEETS 1- 111 W J U) CLW o ' W O) V] o `r LL X x Q w Z Qz w- w W 0 w 0 0) N 0 0 ti O z z o8 cc zd X a X DESIGNED BY: zd 2 a 2 D CHECKED BY: 0 z O a 0 cEIVED 0 1 21.2011 r if EVELOPNT m w 0 0 z ings\R09400—PS—LD1.dwg 506+00 NE1/4, SEC. 22—T23N—R4E, W.M. 505+00 5. 144TH STREET 504+00 - r N 1- 3 i ww q $° I N� r� o= 15.0' PRIVATE o = DRAINAGE EASEMENT • • ' LOT 9 ((7,037 SQ. FT.) 10.0' SIDEWALK & UTILITY EASEMENT 10.0' SIDEWALK & \ UTILITY EASEMENT 103.50' 587°49'10'E .98849'58'E LOT 8 (6.623 SQ. FT.) LOT 1 (17,4535Q FT.) 103.50' SLOT 2 (6.903 SQ FT.) 587.49'10"E \, Fat. 1 , l- 6 W 0Q ^•\ NOw LOT 7 (6,598 SQ. FT.) 587°5143"F _`44.14' 27 34' 587'51'43T 39.00' 65.00' W LOT 6 (6,629 SQ. FT.) 2 LOT 3 (7,597 SQ. FT.) / (6,731 SQI FT.) i 64.50' 66.00' 6.26' O OC CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch= 20 f1. LEGEND PROPERTY UNE - EASEMENT — ROAD CENTERUNE RIGHT-OF-WAY/ADJACENT PROPERTY UNE �iy EX. DECIDUOUS TREE sr x O EX. EVERGREEN TREE TREE TO BE REMOVED TREE TO BE SAVED 1' DIA. X 8' LONG REINFORCED BLACK RUBBER HOSE OR APPROVED EQUAL DO NOT PLACE WOOD CHIPS AGAINST TRUNK OR OVER CROWN OF PLANTS 12 GUAGE GALV. WIRE OR APPROVED SUBSTITUTE TOP OF ROOT BALL TO BE SET AT LEVEL OF THE SURROUNDING SOIL 111,46 3' EARTH SAUCER [EX. GROUND 55- 2'X2' WOOD STAKE OR #6 REBAR T PLANT SCHEDULE SYMBOL BOTANICAL NAME FIRM NATIVE SOIL BACKFILL WITH 50% COMPOST/ 50% NATIVE SOIL AND FERTIUZER. SEE NOTE 4 TREE PLANTING DETAIL NTS REMOVE BURLAP FROM TOP 1/3 OF ROOT BALL ADD 3' WATERING RING COMMON NAME QTY SIZE REMARKS PRUNUS CERASIFERA PURPLE -LEAFED PLUM 9 2 CAL (MIN.) B & B 'THUNDERCLOUD' LANDSCAPE NOTES: 1. CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATING WORK WITH OTHER SITE IMPROVEMENTS AND CONDITIONS PRIOR TO STARTING LANDSCAPE WORK. 2. CONTRACTOR SHALL USE CAUTION WHILE EXCAVATING TO AVOID DAMAGE TO UTILITIES. ADVISE OWNER IMMEDIATELY IF UTTUTIES ARE DISTURBED. CALL LOCATION SERVICE PHONE 1-800-424-5555. 3. CONTRACTOR SHALL BE RESPONSIBLE FOR COMPUTING QUANTITIES OF COMPOST AND MULCH WHERE SHOWN ON THE PLAN. 4. ALL TREES SHALL BE FERTIUZED WITH AGRO TRANSPLANT FERTILIZER 4-2-2 PER MANUFACTURER'S SPECIFICATIONS. 5. ALL PLANT MATERIAL SHALL CONFORM TO AMERICAN STANDARDS FOR NURSERY STOCK, LATEST EDITION. REPLACEMENTS SHALL BE MADE AT ONCE. 6. ALL PLANT MATERIAL FURNISHED SHALL BE HEALTHY REPRESENTATIVES, TYPICAL OF THEIR SPECIES OR VARIETY AND SHALL HAVE A NORMAL GROWTH HABIT. THEY SHALL BE FULL, WELL BRANCHED, WELL PROPORTIONED AND HAVE A VIGOROUS ROOT SYSTEM, AND FREE OF DISEASE, INJURY, INSECTS, DECAY, HARMFUL DEFECTS, AND WEED FREE. SUBSTITUTIONS SHALL NOT BE MADE WITHOUT THE AUTHORIZATION OF THE OWNER OR OWNER'S REPRESENTATIVE. 7. NO PERMANENT IRRIGATION SYSTEM IS PROPOSED. CONTRACTOR SHALL MAINTAIN AND WATER TREES FOR TWO YEARS AFTER FINAL INSPECTION AND ACCEPTANCE BY THE OWNER OR OWNER'S REPRESENTATIVE. 1tic -cis RECEIVED r3Alt 21 20111 coMMU '. f TY DEVELOP&fENT REFERENCE SHEET NO. LD1 SHEET 9 OF SHEETS 1 - LU W coce • ( QO Ocn Q I J W 54) F- u) -4- 0 0 X Z < _0 Z Z J 1--- CL W W CC 1:1- W W W U CC " J w ..r a '+ o N • o N ti 0 0 o� cc 9 DESIGNED BY: z _ d x _ m 0 O N CHECKED BY: 0 Q. REVISION DESCRIPTION 0 0 0 z 2 ings\R09400—PS 506+00 4 $1 505+00 0 CSL S. 144TH STREET 504+00 2 u6 0 0 N 0 0 N ce ce 15.0' PRIVATE DRAINAGE EASEMENT PROPOSED SINGLE FAMILY RESIDENCE LOT 9 (7,037 SQ. FT.) P • PROPOSED SINGLE FAMLY RESIDENCE LOT 8 (6,623 SQ. FT.) 10.0' SIDEWALK & UTIUTY EASEMENT ..6 bl 3.2 1.2 o.e b., b., b 0.7 b.1 b.5 b.6 0.. b.. b.s b., 'b.e b., 0., b. 0.7 b.s `, 0.5 b, 0.7.A.s ;.1Agjjti 3 6 1.2 .t b.,b.. , 1.0 1. b., b. 1J s 1.4 1. b.e b.s 1.3 b., v.a o ,., 1.2 0., •0.e ..a t.2 It 1.o b.. . 1.3 1 j b.. l.t PSL • N Leg 1- a La Z Q CLIx w PROPOSED SINGLE FAMILY RESIDENCE LOT 7 (6,598 SQ. FT.) PSL 1.o b. o 1.3 1(v 1.o I. t 1.4 1.3 1.0 b. 4 1.4 112 b., b. b.. e e 1.5 I b.6 0. b.3 s 1.0 1 b.6 b. 51.0v 0.6 0. 0.2 1.6 015 6.5 0. b2 4 13 1, 1.6 b. b.2 .o 1.3 1; b., b.o a.2 b.. . 1.: 1 t a., b.: b.; 2.o b., 1.6 b 0.2 o b., b., 0.. b 6.2 b., 7 b.7 b.s0 s 0.6 b. b.s b. }s 6.6 b 0.0 0., b.s 1.6 0.6 b , 0. 1 0 ELECTRIC SERVICE CABINET (PSL UGHTS) 7 b.3 b.3 O b.4 / EX. HOUSE 10.0' SIDEWALK & UTIUTY EASEMENT LOT 1 (17,453 SQ. FT.) w,. PSL 0.2 b.4 b.s b., b.. 1.1 1.6 2.2W. ,.1 .5 1. 0.0 0. • . ` ® 6 s , o s 11.5 b 6 0 2 b.4 b.6 b.e 1.0 .2 1.6 1.3 1.4 1.2 1.5 1. 1.0 b.. Ls ., b., b . 1. 1.2 l.5 1.2 1.4 1.. 1b1 ' • 1 s i . 1.3 1.2 `s .3 :.2 b.o '0.2 0.4 b.3 0.3 b.s 0.4 1.0 1.1 t }pp 5p4 +., ,.° 3.6 3.4 1.4 �-3 1 +00• 5P s o 4 b.4 o s b.6 b.e 1.3 i., o.e o.5 1.0 b.. b.. ,. t., 0.5 0.. 1.o l.t 1. 1.3 1.2 1.2 1.5 1.3 .1i 1. t.2 1.o b., b. - - b., b.s b.s b.s PROPOSED SINGLE FAMILY RESIDENCE LOT 6 (6,629 SQ. FT.) • PROPOSED SINGLE FAMLY RESIDENCE LOT 5 (6,578 SQ. FT.) PROPOSED SINGLE FAMILY RESIDENCE LOT 4 (6,731 SQ. FT.) J • PROPOSED MOLE FAMILY LOT 3 (7,597 SQ. FT.) CALCULATION SUMMARY LABEL DESCRIPTION CALC. TYPE UNITS AVG MAX MIN AVG/MIN MAX/MIN CALCPTS 122 ILLUMINANCE Fe 0.94 2.60 0.20 4.70 13.00 87 6400 0.810 LUMINAIRE SCHEDULE (AREA LIGHTS) SYMBOL DESCRIPTION QTY LABEL WATTS LUMENS LLF GE M-400 COBRA 1411=30 10011HPS 1 CSL 122 10667 0.810 ® -9 GE TSP BOX MH -18 70WHPS 4 PSL 87 6400 0.810 NOTES: ILLUMINANCE CALCULATION SUMMARY: AVERAGE FC=0.94, MAXIMUM FC=2.6, MINIMUM FC=0.2 RATIOS: AVE/MIN=4.7, MAX/MIN=13 LUMINAIRE SCHEDULE: 1 TYPE CSL: CITY STREET LIGHT, COBRA HEAD, MOUNTING. HT 30 FT. HPS 100W LAMP, TYPE III DISTRIBUTION GE MODEL M-400, 122W, 10667 LUMENS, LLF 0.810 1 POLE, ROUND ALUMINUM, 8 FOOT ARM, FOR TYPE CSL STREET LIGHT 4 TYPE PSL• PRIVATE STREET LIGHT, BOX, MOUNTING HT 18 FT. HPS 70W LAMP, TYPE III DISTRIBUTION GE MODEL TSP, 87W, 6400 LUMENS, LLF 0.810 4 POLE, ROUND ALUMINUM, 14 INCH ARM, FOR TYPE PSL STREET UGHT ELECTRIC SERVICE: PER CITY OF TUKWILA STANDARD RS -22: SERVICE CABINET CITY STREET LIGHT', PER CITY OF TUKWILA STANDARD RS -20: STREET UGHT POLE POINT -OF -CONTACT FOR CITY STREET LIGHT COORDINATION: SEATTLE CITY LIGHT ELECTRICAL SERVICES COMMERCIAL REP (TOSH SHARP, PH: 386-1551) POINT OF CONTACT FOR ELECTRIC SERVICE FOR PRIVATE STREET LIGHTS: SEATTLE CITY LIGHT ELECTRICAL SERVICES COMMERCIAL REP (TOSH SHARP, PH: 386-1551) LEGEND • PROPERTY UNE itto-n - EASEMENT - RIGHT OF WAY CENTERUNE RIGHT OF WAY/ADJACENT PROPERTY UNE CORNER SET RECEIVE° 'JAN, 21 2011 COMMUNE • DEVELOPMENT PROPOSED STRUCTURE (APPROX. LOCATION) HORIZONTAL GRAPHIC SCALE 20 10 0 10 20 1 inch = 20 N. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 REFERENCE SHEET NO. LP1 SHEET 10 OF 14 SHEETS H W CCW ^amu) I - T r CO u) CO e Wco rn o u- X x STREET LIGHTING PLAN H 0 NW N .•-2 4-1 O O o�Z z cc DESIGNED BY: J W d CHECKED BY: Ife Z 0 CC REVISION DESCRIPTION 0 L:\Working\R09400 — Foster Short Plot \CADD\Orawings\R09400—PS—UTI.dwg Layout Nome: Layout' x E 0 I I 59.93' N0190712'E__. _310.93' t 129.00' ... 122.00' LOT 2 (6,903 SQ. FT.) FFE=306.0 LOT 3 (7,597 SQ. FT.) FFE=308 0 LOT 1 (17,453 SQ. FT. ) 1 - 10:0' SIDEWALK R uTILTY EASEMENT STA 99+37.50 0=6.5'1 5.0` UTILITY ' EASEMENT., .._SLAW p, TYP/ 1_48' ''STk 12+14/ 1.14' LT - t=18.o' D=7,0 88 (F 6" PVC SIDE SS O 13.0X .-- -.- LOT 4 (6,731 SQ. FT.) FFE=303.0 PVT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 01"08'.5 E N01"08'52"E 102.00' STA99+9&86 0=7.5' STA 10+33 L=20.0 I0=9.0 ...L. "" OC GARAGE TO BE DEMOLISHED 10.0 SIDEWALK & UT9JTY EASEMENT 10.0 SIDEWALK & UTIUTY EASEMENT LOT 9 (7,037 SQ. FT.) - _ FFE=298.0- STA 12+06\ 1-22.5' 51.5 LF 6' PVC.•' SIDE SS O 5.0X 00E- ..10.0' SIDEWALK A:- UPUTY EASEMENT LOT 5 (6,578 SQ. FT.) EX. SHED TO BE DE)AOJSHED N01'08'52 E 102.00' LOT 8 (6,623 SQ. FT.) :Si o FFE=297.0 ^l q o m� N EX. 8' SEWER MAIN 5.0 UTILITY EASEMENT LOT 7 (6,598 SQ. FT.) FFE=296.0. 85 (F 6' PVC I SIDE SS O 1.0x STA 100+75 D=2.5' LOT 6 (6,629 SQ. FT.) FFE=292.0 r6 .' 295 290 285 it Y 0 EX. MOH A7-3 STA 10+04, 1,14' LT R11.4.299 6P EX. IE (8'W)=28890 EX. IE (8"NE)=288.80 IE (8'5)-28&90 68.00' 69.00' SEWER PLAN FINISH GRADE ALONG TRACT "A' ALIGNMENT ..-77.13' N01.08'52-0 311.13' j- fX GROUND ALONG TRACT 'A' AUGNMENT I PRIVATE IDRAINAGE EASEMENT. SS4H 11. TYPE 1.-48' SA 12+14, 1.14' LT RIM=300.97 IE (814)=290.04 IE (6"E,W,S)-290.14 J3 APPROX EX GAS LINE .III � I I I ,I I I I ( 1 .I� 10+00 SS STUB ST ' 33 IE (6 -289.14 PROPOSED WATERMAIN 207 LF 8' PVC 0 0.50% SS STUB STA 1 +70 IE (6 E)=289.83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 11+00 SEWER PROFILE SS SNB STA 12+00 I (6'W)=289.98, HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 25 0 25 5 1 inch = 20 ft. 1 inch= 5 ft 12+00 / 102.00' - -520 z ASPHALT CONCRETE OR BITUMINOUS PLANT MIX REPLACEMENT PATCH 150X OF EXISTING DEPTH VICINITY MAP NTS LEGAL DESCRIPTION LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS. PAGES) 31, RECORDS OF ICING COUNTY, WASHINGTON. SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERLINE OF SOUTH 144TH 51tot1 NORTH 8749'10" WEST BETWEEN 42ND AVE SOUTH AND 46TH AVE SOUTH. OWNER INFORMATION n INVESTMENT GROUP. LLC 4055 - S. 148TH STREET TUKWILA. WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE PONT ID. 815; PONT NAME 93V-902; 0.5' COPPER PIN VATH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 144TH STREET AND 46TH AVE SOUTH; ELEVATION - 287.900 FEET NAVD88 NOTES: 1. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. uc &3 REFERENCE SHEET NO. UT1 03 CO 03 0) - J 1- 1- SHEET 11 OF 14 SHEETS ZW CT) IL Z O^ X 0 W Z CC WQ • Q COVJ J 0_ 295 .285 TYPICAL PATCH FOR FLEXIBLE PAVEMENT NOTES 1. ALL WORK TO CONFORM TO THE CURRENT WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD. BRIDGE, AND MUNICIPAL CONSTRUCTION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REQUIRED ON ALL PAVEMENT PATCHING AND OVERLAYS 3. CONTROLLED DENSITY FILL IN PLACE OF CRUSHED ROCK MATERIAL MAY BE REQUIRED IN CASES OF RECENT PAVEMENT OVERLAY, OR AS DIRECTED BY CITY ENGINEER 5/8' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE CITY PAVEMENT RESTORATION DETAIL PER CITY OF TUKWILA STANDARD DWG RS -03 SCALE: NONE a DESIGNED BY: R ,:,; .. 1 21 PEA GRAVEL BEDDING 4 • • i UNITY • !' PME 03 m U U E D 2011 SAN. SEWER PIPE BEDDING SCALE NONE NT 0 0 L \working\R09400 — Foster Snort Plot \CADD\Dro EX. 10. 10' DI WATER MAIN REMOVE/REPLACE CURB, CIJTTER AND SIDEWALK r�. PAVEMENT RESTORATION PER CITY CF TUKWILA , STANDARD DWG RS -03 Y WATERMAIN FITTING DATA 0 STA 9+74 (FIELD VERIFY), 11.14' RT INSTALL WET TAP WITH 1-10'x8' TAPPING TEE (MJ:41) 1-8' GATE VALVE (FLxUJ) I -CONCRETE THRUST BLOCK 0 STA 11+80, 11.14' LT 1 -FIRE HYD. ASSY (MJ) 1-8'x8' TEE (MJxFL) 1-6' GATE VALVE (FUND) 1-8'x4' REDUCER (FLxLJ) GATE VALVE (F NAJ) 8 -LF 6' DJ. 1 -CONCRETE THRUST BLOCK O3 STA 12+32, 11.14' LT 1-4' DJ. CAP (MJ) 1-2 PERMANENT BLOW OFF ASSY 1-4'x4' VERT. CROSS (MJxIAJ) FOR POLY PIGGING 1 -CONCRETE THRUST BLOCK 305 295 290 285 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 8 I i 111 I I I ,1 N01 °10V1'E 310.93' ) 10+00 —T-' 'I 20.0' )I ROW 1 20.0'' ROW DL WATER MEIER TO BE LOWERED TO (FINISH GRADE. 144TH STA 505+43.69= 7:¢VT. RD. STA 10+00 .1 ,I- INSTALL.31' WATER METER AND SERVICE UNE 1:9.00 LOT 1 (17,453 SQ. FT.) 206 LF 8' DI CL 52 -10.0' SIDEWALK 6 - - - WATER MAIN- . - - .. ()nuTY-EASEMENT /4419 LOT 2 (6,903 SQ. FT.) W 122.00' LOT 3 (7,597 SQ. FT.) INSTALL Y.L. WATER METERS AND SERVICE UNES N01"08''5 E 5.c unuTY EASEMENT 611101.08'52"E 169.37'. to: In 31+00 TRACT 'A' PVT. ACCESS & UITLIT(fS 802: •.FT I INSTALL Ti' WATER AND SERVICE UNE r 10.0' aDEWALX & UTILITY EASEMENT 10.0' SIDEWALK & UTILITY EASDAENT LOT- 9 (7,037 SQ. FT.) 01 8' SEWER MAIN APPROX. EX GAS UNE (CONTRACTOR TO FIELD VERIFY) APPRINL EC TV CONDUIT UNE (CONTRACTOR TO FIELD VERIFY) 0-- EX. SEWER MAIN 10+00 68 00' METER INSTALL WATER METER ANI/ SERVICE UNE 12+00 { 200 -.. �. _ 122 00' PVT. RD. STA 12+19.04= HAMMERHEAD STA 100+00 LOT 4 (6,731 SQ. FT.) INSTALL %' WATER METER AND SERVICE UNE 1401'0852'E N08521a�--- a. EX. GARAGE TO BE DEMCIJSHED 36.70 DL SHED TO BE DEMOLISHED o r� 0 INSTALL Y.L. WATER METER AND SERNCE UNE LOT 8 (6,623 SQ. FT.) 64 00' 51 LF 4' DI 0. 52 WATER MAIN N01978'52'E WATER MAIN PLAN FMSH GRADE ALONG TRACT 'A' ALIGNMENT EX GROUND ALONG TRACT 'A' ALIGNMENT 5.0' UTILITY EASEMENT LOT 7 (6,598 SQ. FT.) 311.13' 10.0' I 25.0' . PRIVATE Imo/ 206 LF 8' 01 CL 52 WATER MAIN 51 LF 4 11+00 WATER MAIN PROFILE HORIZONTAL GRAPHIC SCALE VERTICAL GRAPHIC SCALE 20 10 0 10 20 5 25 0 25 5 1 mcn = 20 It. 1 inch = 5 ft. D) CL 52 WATER MAIN 12+00 NOTES: 102.00' INSTALL Y.L. WATER METER AND SERVICE UNE 10.0' SIDEWALK F fr.,,— ..-.- UTIUTY EASEMENT LOT 5 (6,578 SQ. FT.) I_ 305 295 290 .285 T: SIL N01'08'52'E 102.00' IN§PALL j. WATER METER AND SERVICE UNE LOT 6 (6,629 SQ. FT.) 520 ,'- 102.00. 1. CONTRACTOR SHALL FIELD VERIFY ALL GRADES PRIOR TO CONSTRUCTION. EXISTING ASPHALT PAVEMENT 10 rTt 141H ST. N PROJECT SITE S. t44T1 ST u 11819 ST. S. 1501M ST. A 1^ 1^ VICINITY MAP NTS N LEGAL DESCRIPTION LOT 6 AND 7, BLOCK 3, ADAMS HOME TRACTS, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE(S) 31, RECCRDS DF KING COUNTY. WASHINGTON. SITUATE IN THE COUNTY OF KING, STATE CF WASHINGTON. BASIS OF BEARING MONUMENTED CENTERLINE OF SOUTH 144111 STREET NORTH 8T49'10' WEST BETWEEN 42ND AVE SOUTH AND 46TH AVE SOUTH. OWNER INFORMATION 11. INVESRAENT GROUP, LLC 4055 - S. 148111 Sl Kul TUKWILA. WA 98168 (206) 245-5755 CONTACT: KHAN HUYNH TAX PARCEL NUMBERS 0040000375 & 0040000380 VERTICAL DATUM ELEVATION DATUM PER SURVEY CONTROL DATABASE POINT ID: 815; POINT NAME 93V-902; 0.5 COPPER PIN WITH PUNCH SET IN CONCRETE 0.53' DOWN FROM MONUMENT CASE RIM AT THE INTERSECTION OF SOUTH 144TH SIiRE1 AND 461H AVE SOUTH; ELEVATION - 287.900 FEET NAVD88 REFERENCE SHEET N0. UT2 SHEET 12 OF 14 SHEETS 0 tb W W LL - X CC W a - Z Z a cc W QJ Ibb ASPHALT CONCRETE OR BITUMINOUS PUNT MIX REPLACEMENT PATCH 150% OF DISTING DEPTH TYPICAL PATCH FOR R-EXIBLE PAVEMENT NOTES 1. ALL WORK TO CONFORM TO THE CURRENT WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, A10 MUNICIPAL CONSTRUCTION. 2. A MINIMUM OF A ONE YEAR GUARANTEE IS REQUIRED ON ALL PAVEMENT PATCHING AND OVERLAYS. 3. CONTROLLED DENSITY FILL IN PLACE OF CRUSHED ROCK MATERIAL MAY BE REWIRED IN CASES OF RECENT PAVEMENT OVERLAY. OR AS DIRECTED BY CITY ENGINEER. 2. CONTRACTOR SHALL RESTORE CONSTRUCTION AREAS TO EXISTING OR BETTER CONDITIONS 5/8' MINUS COMPACTED CRUSHED ROCK UNLESS OTHERWISE ORDERED BY THE CITY PAVEMENT RESTORATION DETAIL PER CITY OF TUKWILA STANDARD DWG RS -03 SCALE NONE w C. d z 0 cL DESIGNED BY: a 0 CHECKED BY: cL z 0 a 0 a iY 50 0 0 tri R ECEI�E 'JAN 21 COMMU OEVELO' m D 0 1 Jan 11, 2011 — 10:04pm PLAN - FRAME 8 COVER SECTION - FRAME 8 COVER BOTTOM VIEW OF COVER NOTES: 1. MACHINE BEARING FACES CF COVER AND CASE TO INSURE POSITIVE FIT. 2 CASTINGS SHALL BE GRAY IRON A.S.T.M. DESIGNATION A-48, CLASS 40, AND SHALL CONFORM FURTHER TO APPLICABLE SECTION OF THESE SPECIFICATIONS. 3. MONUMENTS ARE RECUI RED AT STREET INTERSECTIONS AND MUST BE SET BY A SURVEYOR LICENSED TO PRACTICE AS SUCH BY THE STATE OF WASHINGTON, NOT TO KALE City of Tukwila STREET MONUMENT WI FRAME & COVER *MEM RE -07 RL3/13131.1 ft: 08.03 a SHELTON • STEET MONUMENT DETAIL 0 SCALE NONE nnnnhn ,1,1.111 ELEVATION (FROM STREET) TYPICAL NOTES: SIDE VIEW anCt. 1. MAILBOX MUST BE TYPE 'APPROVED BY THE POSTMASTER GENERAL" WITH A LINFORIA Box STYLE AND METHCO CF ADDRESS IDENTIFICATION PER EACH STANDARD, 2. LOCATION S SUBJECT TO APPROVAL BY THE CITY FOR PROTECTION OF VIEWS AND ACCESS AND IS TO BE SHOVVN ON THE STREET IMPROVEMENT PLANS. 3. THIS SKETCH DEPICTS A MINIMUM STRUCTURAL AND DIMENSIONAL STANDARD, INNOVATIVE DESIGNS MEETING THESE MINIMUMS MA BE ACCEPTED. 110119 •CAL. City of Tukwila MAILBOX INSTALLATION RS -08 11.19011 re 0803 AwA8YAI, a SNIELTCN • MAILBOX INSTALLATION DETAIL SCALE: NONE SIDEWALK WIDTHS • MINOR PRINICIPAL TUKWILA ARTERIAL ARTERIAL URBAN CENTER (SEE NOTE 1) 5' 8' a OAS (WE 11112, ICOPI JON. A / ECIO1311.1.1111. INF RAI. 070.1121011.101IIT 0-1,0 11. INFTER RCE NOTES: SECTION A -A 074.10141.10,4111 EVERY Ur PLAN VIEW I. WOE SW DO* 111001If ANT. 1 1 Yr 0:11.10111T ELEVATION 1. SIDEWAIJCS SHALL BE A MINIMUM OF 8 FEET WIDE AT BUS STOPS AND PULLOUTS, OR WHERE THE SPEED LIMIT IS OVER 35 MPH. OR WHERE A TRAIL AND SIDEWALK ARE COMBINED. 2. RACE CEMENT CONCRETE OVER 2' 00 008' MINUS CRUSHED ROCK OR AS SPECIFIED IN THE CURRENT APWAIWSDOT STANDARD SPECIFICATIONS. 3. REMOVE EXISTING CONCRETE CURB, GUTTER OR SIDEWALK TO THE NEAREST JOINT: SCORE JOINTS MUST BE SAW CUT AND REPLACED WTTH NEW. NCR 10 Cf. City of Tukwila SIDEWALK MOM Ra.11 nrolon et 0503 j1/11, IMINOIC 07.05 331.010.),. B. SHELTON SIDEWALK DETAIL 0 SCALE: NONE exe CEDAR POST FINISH GRADE CRUSHED ROCK 'STOP' SIGN INSTALLATION DETAIL 0 SCALE: NONE REFERENCE SHEET NO. DT1 SHEET 13 OF 14 SHEETS (1) -J 10 - NOTES: 1. THIS ALTERNATE 5/03.00 00 USED ONLY AFTER STUDYING CL06ENESS OF DRIVEWAYS, DRAINAGE, TOPOGRAPHY, ORVEWAY GRADES, ETC. 2. CONCRETE /0481100 afiss BOR BETTER THAN 5-1/25800. 3000 PSL 3. INSFECTION REGURED BEFORE PLACING CONCRETE. AT 10851 24 HOUR NOTICE MUST BE GIVEN TO TUKWILA PUBJC NCRNS DEPARTMENT. 4. ALL DRIVEWAY APRONS SHALL BE A MINIMUM OF Cr THICK_ 5. VYHERE DRIVEWAY WIDTHS EXCEED IS, 83/5' X5.5? EXPANSION JOINT SHALL BE RACED LCNGITUDINALLY ALONG THE CENTERUNE. 8. ALL NERK SHALL BE PERFORMED IN ACCORDANCE WITH APWAMSDOT PLANS AND SPECIFICATIONS CR AS 0/8003/0 00 THE CITY OF TUKWLA 7. AN ASPHALT AF'RON MAY BE USED IN AREAS WHERE NO CURB EXISTS. O REMOVAL OF EXISTING CONCRETE CURE GUTTER OR SIDEWALI( SHALL BE SAW CUT TO THE NWT JOINT. NOM CALM City of Tukwila RESIDENTIAL DRIVEWAY ALTERNATE 1 OF 3 woo, 133-58A mom et 08,03 ow..., Et SHELTON • _J SECTION AA NOTES' CURB DETAIL 1. THS ALTERNATE SHOLLD EAUSED ONLY AFTER STUDYING CLOSENESS OF DRIVEWAYS, DRAINAGE. TOPOGRAPHY, DRIVEWAY GRADES RIGHT OF WAY, ETC. 2. CONCRETE SHALL BE CLASS OCR BETTER THAN 5-1/2 SACK, 3000 P51. 3 INSPECTICN REQUIRED BEFORE RACING CONCRETE AT LEAST 24 HOUR NOTICE MUST BE GIVEN TO TUKWILA PUBLIC WORKS DEPARTMENT. 4 ALL DRIVEWAY APRONS SHALL BE A MINIMUM OF 6" THICK 5 WHERE DRIVEWAY WDTHS EXCEED 15% A Yr X 5-1/2'EXPANSION JOINT SHALL BE RACED LONGITUDINALLY 810140 1010 CENTERLINE, 8 ALL WORK SHALL EE PERFORMED IN ACCOPDANCE WTH APWMNSDOT P1055 0840 SPECFICATIONS 00 00 DRECTED BY THE CITY OF TUKWILA 7. AN ASPHALT APRON MAY BE USED IN AREAS WHERE IVO CURB EXISTS. 8 REMOVAL OF EXISTING CONCRETE CURIA, GUTTER OR SIDEWALK SHALL BE SAW CUT TO THE NEXT JOINT. Norm =ma City of Tukwila RESIDENTIAL DRIVEWAY ALTERNATE 3 OF 3 RSCISC OM NOM In: 00 03 II•1104.4: B SI-ELTON • DRIVEWAY APPROACH DETAIL 0 SCALE: NONE ANCHOR BOLT PATTERN PER N.D.C.B.U. PEDESTAL TEMPLATE EXPANSION JOINT 2'-7* 5'-0* MIN EXPANSION JOINT 4. CLEAR WIDTH MOUNT ON PEDESTAL PROVIDED N.D.C.B.U. UNIT EXPANSION JOINT FRONT SIDE (N.D.C.B.U.) MAILBOX INSTALLATION NEIGHBORHOOD DELIVERY AND COLLECTION BOX UNIT PER 2007 KING COUNTY ROAD DESIGN AND CONSTRUCTION STANDARDS FIGURE 5-017 SCALE: NONE 40 RECEIVE JAN 21' 201i COMMUNITY DEVELOPNENT LLI LLI COO •-I 6 0 d RM 8 cr 0 DESIGNED BY: a. a3 CO 50 o. z 0 0. 0 0 co 50 re ri CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 CO w 0 0 Short Plot \CADD\Drawings\R0940 L: \Working\R09400 — Foste (CITY OF TUKWILA) GENERAL: 1. AT LEAST ONE WEEK BEFORE BEGINNING CONSTRUCTION, CONTACT PUBUC WORKS UTILITIES INSPECTOR AND SCHEDULE A PRECONSTRUCTION MEETING. 2. NOTIFY THE UTIUTIES INSPECTOR AT 206-433-0179 AT LEAST 48 HOURS (2 WORKING DAYS) BEFORE STARTING PROJECT SITE WORK. 3. REQUEST A PUBLIC WORK UTIUTY INSPECTION AT LEAST 24 HOURS (1 WORKING DAY) IN ADVANCE BY CAWNG 206-433-0179. 4. THE CONTRACTOR ASSUMES SOLE RESPONSIBIUTY FOR WORKER SAFETY, AND DAMAGE TO STRUCTURES AND IMPROVEMENTS RESULTING FROM CONSTRUCTION OPERATIONS. 5. THE CONTRACTOR SHALL HAVE THE PERMIT(S) AND CONDITIONS. THE APPROVED PLANS, AND A CURRENT COPY OF CITY OF TUKVWLA DEVELOPMENT GUIDEUNES AND DESIGN AND CONSTRUCTION STANDARDS AVAILABLE AT THE JOB SITE. 6. ALL WORK SHALL CONFORM TO THESE APPROVED DRAWINGS. ANY CHANGES FROM THE APPROVED PLANS REQUIRE PREAPPROVAL FROM THE OWNER, THE ENGINEER, AND THE CITY OF TUKVWLA. 7. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKWILA DEVELOPMENT GUIDELINES AND DESIGN AND CONSTRUCTION STANDARDS, UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS DIRECTOR. 8. CONTRACTOR SHALL MAINTAIN A CURRENT SET OF RECORD DRAWINGS ON-SITE. 9. CONTRACTOR SHALL PROVIDE RECORD DRAWINGS PRIOR TO PROJECT FINAL APPROVAL 10. CONTRACTOR SHALL PROVIDE TRAFFIC CONTROL AND STREET MAINTENANCE PLAN FOR PUBUC WORKS APPROVAL BEFORE IMPLEMENTATION. 11. ALL SURVEYING FOR PUBLIC FACILITIES SHALL BE DONE UNDER THE DIRECTION OF A WASHINGTON UCENSED LAND SURVEYOR. VERTICAL DATUM SHALL BE NAVD 1988. FOR PROJECTS WITHIN A FLOOD CONTROL ZONE, THE PERMITTEE SHALL PROVIDE CONVERSION CALCULATIONS TO NGVD 1929. HORIZONTAL DATUM SHALL BE STATE PLANE COORDINATES. 12. THE CONTRACTOR SHALL REPLACE, OR RELOCATE ALL SIGNS DAMAGED OR REMOVED DUE TO CONSTRUCTION. (CfTY OF TUKWILA) GRADING AND EROSION CONTROL NOTES: 1. THE EROSION PREVENTION AND SEDIMENT (ESC) MEASURES ON THE APPROVED PLANS ARE MINIMUM REQUIREMENTS. 2. BEFORE BEGINNING ANY CONSTRUCTION ACTIVITIES, ESTABUSH THE CLEARING UMITS AND INSTALL CONSTRUCTION ENTRANCE. 3. BEFORE ANY GROUND DISTURBANCE OCCURS, ALL DOWNSTREAM EROSION PREVENTION AND SEDIMENT CONTROL MEASURES (ESC) MUST BE CONSTRUCTED AND IN OPERATING. INSTALL AND MAINTAIN ALL ESC MEASURES ACCORDING TO THE ESC PLAN. 4. ESC MEASURES, INCLUDING ALL PERIMETER CONTROLS, SHALL REMAIN IN PLACE UNTIL FINAL SITE CONSTRUCTION IS COMPLLIU) AND PERMANENT STABIUZA11ON IS ESTABLISHED. 5. FROM MAY 1 THROUGH SEPTEMBER 30, PROVIDE TEMPORARY AND PERMANENT COVER MEASURES TO PROTECT DISTURBED AREAS THAT WILL REMAIN UNWORKDED FOR SEVEN DAYS OR MORE. 6. FROM OCTOBER 1 THROUGH APRIL 30, PROVIDE TEMPORARY AND PERMANENT COVER MEASURES TO PROTECT DISTURBED AREAS THAT VALL REMAIN UNWORKED FOR TWO DAYS OR MORE. IN ADDITION TO COVER MEASURES, THE CONTRACTOR SHALL A. PROTECT STOCKPILES AND STEEP CUT AND FILL SLOPES IF UNWORKED FOR MORE THAN 12 HOURS. B. STOCKPILE, ON SITE, ENOUGH COVER MATERIALS TO COVER ALL DISTURBED AREAS. 7. BY OCTOBER 8, SEED ALL AREAS THAT WILL REMAIN UNWORKDED DURING THE WET SEASON (OCTOBER 1 THROUGH APRIL 30). MULCH ALL SEEDED AREAS. (CfTY OF TUKWILA) UT1LfTY NOTES: 1. ALL TRENCH EXCAVATION OPERATIONS SHALL MEET OR EXCEED ALL APPLICABLE SHORING LAWS FOR TRENCHES. ALL TRENCH SAFETY SYSTEMS SHALL MEET PASHA REQUIREMENTS. 2. PLACE POWER, CABLE, FIBER OPTICS, AND TELEPHONE ONES IN A TRENCH WITH A 5 FEET MINIMUM HORIZONTAL SEPARATION FROM OTHER UNDERGROUND U11UTIES. 3. ADJUST ALL MANHOLES, CATCH BASINS, AND VALVES IN PUBUC RIGHT-OF-WAY OR EASEMENT AFTER ASPHALT PAVING. (CITY OF TUKWILA) PAVEMENT RESTORATION: 1. COMPACT BACKFILL TO COMPACTION OF UNDISTURBED GROUND OR COMPACT BACKFILL TO MEET CITY STANDARDS. 2. RESTORE PAVEMENT TO ITS ORIGINAL CONDITION IMMEDIATELY FOLLOWING BACKFIWNG OR WHEN CONCRETE IS CURED. A. EXCEPT FOR WINTER OR OTHER WEATHER CONDITIONS WHICH PREVENT PAVING, COMPLETE PAVING, RESURFACING, OR FACIUTY REPLACEMENT: 1. ON PRINCIPAL ARTERIAL MAJOR OR COLLECTOR STREET WITHIN 3 CALENDAR DAYS. 2. ON OTHER STREETS WITHIN 7 CALENDAR DAYS. B. FOR WORK PREVENTED DUE TO WEATHER: 1. PROVIDE A TEMPORARY PATCH. 2. PROVIDE A CONSTRUCTION SCHEDULE ADDRESSING MEANS AND METHODS TO MINIMIZE TRAFFIC DISRUPTION AND TO COMPLETE WORK AS POSSIBLE. CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 QUICKLY AS (CITY OF TUKWILA) WORK IN RIGHT-OF-WAY: 1. WHEN ACTIVITY IS UNATTENDED, INSTALL A SIGN WITH MINIMUM TWO-INCH LETTERS STATING PERMITTEE OR COMPANY NAME, AND DAY AND EVENING PHONE NUMBERS. TMC 11.08.140 2. INSTALL BARRICADES, SIGNS, WARNING UGHTS, AND SAFETY DEVICES SUFFICIENT TO NOTIFY PUBLIC OF OBSTRUCTION OR TRAFFIC HAZARD. DEVICES MUST REMAIN UNTIL THE OBSTRUCTION IS CLEARED AND THE RIGHT-OF-WAY IS RESTORED. TMC 11.08.170.A 3. MAINTAIN ACCESS TO FIRE STATIONS, FIRE HYDRANTS, FIRE ESCAPES, AND FIRE FIGHTING EQUIPMENT. TMC 11.08.180 4. MAINTAIN ACCESS TO PROPERTY ADJOINING EXCAVATION OR SITE WORK. 5. PRESERVE AND PROTECT ALL PROPERTY ADJOINING EXCAVATION OR SITE WORK. 6. RESTORE DISTURBANCE TO PRIVATE AND PUBLIC PROPERTY. TMC 11.08.220.D 7. DISTURBANCE OF SURVEY MONUMENTS AND MARKERS REQUIRES THE DIRECTOR'S PREAPPROVAL A UCENSED SURVEYOR SHALL REPLACE DISTURBED MONUMENTS AND MARKERS. 8. COMPLY WITH ALL STATE AND CITY LAWS AND PROCEDURES TO PROTECT PUBLIC FROM AIR, WATER AND NOISE POLLUTION. TMC 11.08.210 9. INSTALL TEMPORARY SIDEWALK OR CURB RAMP IF PERMANENT IS BLOCKED. TMC 11.08.220 10. COVER OPEN EXCAVATION WITH NON-SKID STEEL PLATES RAMPED TO ELEVATION OF CONTIGUOUS RIGHT OF WAY SURFACE. TMC 11.08.220 11, STORE ALL STOCKPILE MATERIAL SHALL BE STORED IN A SAFE MANNER TO PROTECT THE PUBUC. (CITY OF TUKWILA) STORM DRAINAGE NOTES: 1. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKWILA DEVELOPMENT GUIDEUNES AND DESIGN AND CONSTRUCTION STANDARDS, AND THE CURRENT KING COUNTY SURFACE WATER DESIGN MANUAL UNLESS OTHERWISE APPROVED. 2. MARK ALL STORM DRAIN INLETS WITH "DUMP NO WASTE" AND EITHER "DRAINS TO STREAMS", "DRAINS TO WETLANDS", OR "DRAINS TO GROUNDWATER AS APPUCABLE. 3. DRIVEWAY CULVERTS SHALL BE OF SUFFICIENT LENGTH TO PROVIDE A MINIMUM 3:1 SLOPE FROM THE EDGE OF THE DRIVEWAY TO THE BOTTOM OF THE DITCH. CULVERTS SHALL HAVE BEVELED END SECTIONS THAT MATCH THE INSIDE SLOPE. 4. SINGLE FAMILY RESIDENCE CONSTRUCTED ON LOTS CREATED BY SUBDIVISION MUST PROVIDE DOWNSPOUT INFILTRATION SHOWN ON THE APPROVED PLANS. 5. COORDINATE FINAL STUB -OUT LOCATIONS WITH THE UTIUTIES INSPECTOR. PROVIDE A WIRE OR OTHER DETECTION DEVICE AND MARK STUB -OUT LOCATION WITH A 5 -FOOT 2" X 4" STAKE, BURIED 4 -FOOT AND LABELED "STORM' OR "DRAIN". (CITY OF TUKWILA) SANITARY SEWER NOTES: 1. ALL METHODS AND MATERIALS SHALL MEET CITY OF TUKWILA DEVELOPMENT AND GUIDELINES AND DESIGN AND CONSTRUCTION STANDARDS, UNLESS OTHERWISE APPROVED. 2. THE CONTRACTOR SHALL MARK THE END OF THE SIDE SEWER, INSIDE THE PROPERTY UNE, WITH A 4 -FOOT PRESSURE TREATED 2 X 4, BURIED IN THE GROUND 4 FEET. THE BURIED END SHALL HAVE A 2 X 4 CLEAT NAILED TO IT TO PREVENT WITHDRAWAL OF THE STAKE. THE EXPOSED 1 -FOOT SHALL BE PAINTED TRAFFIC YELLOW AND THE DEPTH TO THE SIDE SEWER OR TEE SHALL BE INDICATED IN BLACK PAINT. 3. INSTALL SANITARY SEWER UNES AT LEAST 10 FEET HORIZONTALLY, MEASURED EDGE TO EDGE, FROM ANY EXISTING OR PROPOSED WATER SUPPLY AND AT LEAST 18 INCHES BELOW THE BOTTOM OF A WATER UNE. (CITY OF TUKWILA) WATER SUPPLY NOTES: 1. THE CONTRACTOR SHALL INSTALL CORPORATE STOPS, WATER SERVICE UNES, AND METERS. KING COUNTY WATER DISTRICT #125 WILL INSTALL THE METERS. 2. PRESSURE TEST ALL WATER MAINS AND APPURTENANCES. 3. FLUSH AND DISINFECT NEW, CLEANED, OR REPAIRED WATER MAINS. 4. INSTALL RESTRAINED JOINTS AT ALL BENDS, TEES, AND OTHER DIRECTION CHANGES. 5. ALL WATER MAINS SHALL HAVE A BLOW -OFF ASSEMBLY AT LOW POINT AND AN AIR VACUUM RELIEF VALVE AT HIGH POINT OF MAIN. 6. INSTALL FIRE HYDRANT ASSEMBLY SO IT STANDS PLUMB AND SO THAT THE LOWEST OUTLET IS AT 18" ABOVE THE FINISHED GRADE. THE ASSEMBLY SHALL HAVE A CLEAR ZONE AROUND HYDRANT OF AT LEAST 36" AND THE PUMPER PORT SHALL FACE STREET OR FIRE ACCESS. 7. THE INSTALLER OF A FIRE UNE BACKFLOW PREVENTION DEVICE INSTALLED OUTSIDE THE BUILDING AND UNDERGROUND, SHALL HAVE A LEVEL III CERTIFICATE OF COMPETENCY OR A LEVEL U CONTRACTOR'S CERTIFICATE OF COMPETENCY. IF THE INSTALLER IS DIFFERENT FROM THE BACKFLOW PREVENTION DESIGNER, THE INSTALLER MUST STAMP, SIGN, AND DATE THE PLANS, IN ADDITION TO THE DESIGNER'S STAMP, SIGNATURE, AND DATE. 8. INSTALL WATER MAINS CROSSING SEWER ONES SO THAT THE BOTTOM OF THE WATER MAIN IS AT LEAST 18 INCHES ABOVE THE TOP OF THE SEWER. LOCATE FULL SECTION OF WATER PIPE SO THAT ITS MIDPOINT IS ABOVE THE SEWER PIPE AT THE CROSSING. THIS INSTALLATION MAY REQUIRE SPECIAL STRUCTURAL SUPPORT FOR THE WATER AND SEWER PIPE. 9. INSTALL WATER SUPPLY UNES AT LEAST 10 FEET HORIZONTALLY, MEASURED EDGE TO EDGE, FROM ANY E6.colXISTING OR PROPOSED SEWER NDAD LEAST 18 INCHES ABOVE THE TOP OF A SEWER. rJAN 212011' COMMUNITY DEVELOPMENT REFERENCE SHEET NO. SN1 SHEET 14 OF 14 SHEETS CL I- CC S Cr) CC W H Cn 0 O oz CC z o O zo ccU co 0 U ID 1 g3 rml C m N rib E -t w•-• LLICO O 0 0 o8 Q CL x x x DESIGNED BY: 0 CHECKED BY: REVISION DESCRIPTION >- CO uJ 0 .