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HomeMy WebLinkAboutSEPA E07-010 - MCCARTER MICHAEL - 2 SINGLE FAMILY RESIDENCESMICHAEL MCCARTER 2 SINGLE FAMILY RESIDENCES 4812 SO. 150T" ST. E07 -010 • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director October 18, 2007 Ms. Laurie Schwan 4810 5.150` St. Tukwila, WA 98188 RE: Your letter received dated August 8, 2007 Environmental Review, E07 -010 Dear Ms. Schwan: The City is in receipt of your letter dated August 8, 2007 regarding the McCarter Environmental review. The issues that you raised in your letter were also issues that were of a concern to the City. The applicant is proposing to construct two homes on two existing lots. Access for the homes will be via an existing private easement. The applicant is required to replace the gravel with an improved surface, either asphalt or concrete. Typically, the construction of two single family homes does not require environmental review. However in this case, environmental review was triggered due to the large volume of soil that are to be disturbed during construction. The City required that several special studies be provided as part of the application. These reports included; a geotechnical report which addressed the concerns you noted regarding the steep slope and possible failure of the slope; a wetland delineation for the stream that is located on the property; and an arborist report for certain trees that were to be impacted by road construction. The applicant's proposal will have no impact on the stream or its associated buffer. The applicant is well beyond the distance he is required to maintain as required by_ the City's environmental regulations. Additionally, the arborist report concluded that no trees that were offsite were to be impacted during construction. That City is also aware of some illegal dumping that has occurred on the applicant's two lots. This would most likely cease after the two homes are constructed. The City issued a Determination of Non - Significance on September 7, 2007. which concluded the City's environmental review process. Please feel free to contact me with any questions or concerns. I can be contacted by phone at (206) 431- 3684 or by email bmiles@ci.tukwila.wa.us. Si ran n J. Iles Senior Planner cc. File (E07 -010) 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 File Number: Applied: Issue Date: Status: CitAf Tukwila Department of Community Development 6300 Southcenter Boulevard, Suite #100 Tukwila, Washington 98188 Phone: 206-431-3670 Fax: 206 - 431 -3665 Web site: http://www.ci.tukwila.wa.us DETERMINATION OF NON - SIGNIFICANCE (DNS) E07 -010 06/01/2007 09/07/2007 APPROVED Applicant: MIKE MCCARTER Lead Agency: City of Tukwila Description of Proposal: SEPA REVIEW FOR CUT AND FILL GREATER THAN 500 CUBIC YARDS FOR CONSTRUCTION OF TWO HOMES. THE PROJECT INVOLVES THE CONSTRUCTION OF TWO HOMES AND IMPROVEMENTS TO AN EXISTING ACCESS EASEMENT. THE PROPERTY CONTAINS A WATER COURSE AND A WETLAND. THE PROJECT WILL AVOID IMPACTS TO THE WATERCOURSE AND THE WETLAND AND THIER BUFFERS. Location of Proposal: Address: Parcel Number: Section/Township /Range: 4812 S 150 ST TUKW 0042000147 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 f a I I ,7 . The lead agency will not act on this proposal for 14 days from the date below. 1 Jack " : ce, Res`¢onsible Official City , Tukwila 6300 Southcenter Blvd Tukwila, WA 98188 (206)431 -3670 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) Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION d��l �,, HEREBY DECLARE THAT: Notice of Public Hearing Determination of Non - Significance Project Name: 11 C ci[- Notice of Public Meeting Mitigated Determination of Non - Significance Board of Adjustment Agenda Pkt 1`, d!, Determination of Significance & Scoping Notice Person requesting mailing: � Board of Appeals Agenda Pkt Notice of Action Planning Commission Agenda Pkt 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 listed on this 04- day of 6 in the year 20 01 P:W DMINISTRATIVEFORMS \FORMS\AFFIDAVITOFDISTRIBUTION Project Name: 11 C ci[- Project Number: e 6 4 - 0 10 Mailer's Signatur 0 2Jt Person requesting mailing: � P:W DMINISTRATIVEFORMS \FORMS\AFFIDAVITOFDISTRIBUTION ( ) U.S. ARMY CORPS OF ENGINEERS () FEDERAL HIGHWAY ADMIN TION ( ) DEPT OF FISH & WILDLIFE WASH () U.S. ENVIRONMENTAL PROTECTION AGENCY () U.S. DEPT H.U.D. ( ) NATIONAL INE FISHERIES SERVICE INGTON STATE AGENCIES () DEPT OF SOCIAL & HEALTH SERV. () DEPT OF ECOLOGY, SHORELAND DIV DEPT OF ECOLOGY, SEPA DIVISION* ( ) OFFICE OF ATTORNEY GENERAL ' SEND CHKUST W/ DETERMINATIONS • SEND SITE MAPS WITH DECISION () OFFICE OF ARCHAEOLOGY ( ) TRANSPORTATION DEPARTMENT () DEPT NATURAL RESOURCES () OFFICE OF THE GOVERNOR () DEPT OF COMM. TRADE & ECONOMIC DEV. () DEPT OF FISHERIES & WILDLIFE X KING COUNTY AGENCIES ( ) BOUNDARY REVIEW BOARD () FIRE DISTRICT 111 () FIRE DISTRICT 12 () K.C. WASTEWATER TREATMENT DIVISION () K.C. DEPT OF PARKS & REC () KC. ASSESSORS OFFICE ( ) TUKWILA SCHOOL DISTRICT () TUKWILA UBRARY () RENTON UBRARY O KENT UBRARY () CITY OF SEATTLE UBRARY () OWEST () SEATTLE CITY UGHT () PUGET SOUND ENERGY () HIGHLNE WATER DISTRICT () SEATTLE WATER DEPARTMENT ( ) AT&T CABLE SERVICES SCHOOLS/LIBRARIES, UTIUTIES CITY AGENCIES () KENT PLANNING DEPT ( ) TUKWILA CITY DEPARTMENTS: () PUBLIC WORKS () FIRE ()POUCE ()FINANCE () PLANNING () BUILDING () PARKS & REC. () MAYOR () CITY CLERK OTHER ( ) PUGET SOUND REGIONAL COUNCIL ( ) SW K C CHAMBER OF COMMERCE `` MUCKLESHOOT INDIAN TRIBE ( ) CULTURAL RESOURCES PROGRAM 3FISHERIES PROGRAM ( ) WILDLIFE PROGRAM ( ) SEATTLE TIMES • () SOUTH COUNTY JOURNAL P:\ ADMINISTRATIVEWORMSCHKLIST .DOC ( ) HEALTH DEPT ( ) PORT OF SEATTLE ( ) KC. DEV & ENV!R SERVICES-SEPA INFO CNTR ( ) KC. TRANSIT DIVISION - SEPA OFFICIAL ( ) KC. LAND & WATER RESOURCES ( ) FOSTER LIBRARY () K C PUBLIC UBRARY ( ) HIGHLINE SCHOOL DISTRICT () SEATTLE SCHOOL DISTRICT ( ) RENTON SCHOOL DISTRICT ( ) OLYMPIC PIPELINE VAL WE SEWER DISTRICT ( )WATER DISTRICT 820 ( ) WATER DISTRICT 1125 ( ) CITY OF RENTON PUBLIC WORKS () BRYN MAWR- LAKERIDGE SEINER/WATER DISTRICT () RENTON PLANNING DEPT - ( ) CITY OF SEA -TAC () CITY OF BURIEN ( ) TUKW W► PLANNING COMMISSION MEMBERS ( ) TUKWILA CITY COUNCIL MEMBERS () CITY OF SEATTLE - SEPA INFO CENTER - DCLU () STRATEGIC PLANNING OFFICE' • NOTICE OF ALL SEATTLE RELATED PLNG PROJ. LOCAL AGENCIES () DUWAMISH INDIAN TRIBE () P.S. AIR POLLUTION CLEAN AGENCY () SOUND TRANSIT () DUWAMISH RIVER CLEAN -UP COAUTION 'SENO NOTICE OF ALL APPUCATIONS ON OUVYAMISH RIVER MEDIA ( ) HIGHLINE TIMES • ( ) CI.TUKW1LA.WA.US.VWWV SEPA MAILINGS Mail to: (comment period starts Albite of mailing) Dept. of Ecology Environmentaliew Section 'Applicant *Other agencies as necessary (checked off on attached list) *Any parties of record • send only the staff report, site plan and the SEPA Determination .. KC Transit Division. -:SEPA Official would lie to receive information about all projects that might affect transit demand Send These Documents to DOE: SEPA Determination (3 -part from Sierra) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS: Notice ofAppllcatlon for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The notice of Application for Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the notice of application. If a hearing will be held on the application, the hearing notice must include the information that written comments may be submitted, or oral presentation made at the hearing. .. Shoreline Permit Notice of Decision: Mail to: (within 8 days of decision; 21-day appeal period begins date received by DOE) Department of Ecology Shorelands Section State Attomey General 'Applicant . •Indian Tribes .. "Other agencies as necessary (checked off on attached list). 'Any parties of record ' send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: Permit Data Sheet Shoreline Substantial Development Permit (3 -part from Sierra) Findings (staff report or memo) • Shoreline Permit Application Form (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) - Site plan, with mean high water mark & irnprovements — Cross- sections of site with structures & shoreline - Grading Plan - Vicinity map SEPA determination (3 -part from Sierra) Findings (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P: \ADM[NISTRATIVEIFORMSTHICUST.DOC Mr. Mark Wahstrom 4802 S. 150th St. 1,/ Tukwila, WA 98188 Mr. Stewart L. Shusterman 4820 s. 150th Street Tukwila, WA 98188 MEMORANDUM To: Jack Pace, Deputy Director From: Brandon Miles Date: September 5, 2007 Re: E07 -010 Earthwork for McCarter Residences Project Description: Mike McCarter has submitted two building permit applications to construct two single family homes on two existing parcels on S. 150`h Street. Environmental review was triggered because the cut/fill exceeds the exempted amount of 500 cubic yards (TMC 21.04.110). The applicant's homes will be located on the southern portion of the property. Agencies with Jurisdiction: Department of Ecology (DOE) Other Required Permits: Land Altering /Grading/Preloads Permit Approval Building /Demolition Permits Plumbing/Mechanical Permits Electrical Permits Summary of Primary Impacts: • Earth City of Tukwila, Public Works City of Tukwila, Community Development City of Tukwila, Community Development City of Tukwila, Community Development The City's sensitive area maps indicate that the property contains class two and three slopes. As required under the City's Sensitive Area regulations (TMC 18.45), the applicant submitted a geotechnical report prepared by Icicle Creek Engineers (dated July 9, 2004). Supplements to the report were also filed with the City and are dated January 24, 2007 and Brandon Miles Page 1 09/05/2007 H: \SEPA \McCarter \sepa - staffrpt.doc • • Brandon Miles E07 -010, McCarter Homes SEPA Staff Report May 25, 2007 (All three documents were prepared by James M. Brisbine, however, the name of the engineering firm has changed). The southern portion of the parcels, where the homes will be constructed, is generally level. The central and northern portion of the parcels consists of a deep ravine that plunges to the east. The ravine has a slope ranging from 50 to 60 percent. The geotechnical report notes that the 'slope presents some signs of creep (2). However, the report also notes that there is no indication of severe erosion, active landsliding or other large -scale instability (2). The geotechnical report recommends a required setback of 20 feet from the top of the slope. The January 24, 2007 supplement notes, "Civil sheet C1.0 indicates that a setback distance of about 22 feet or more is provided for both houses, when measured horizontally from any foundation surface to the nearest sideslope face (accounting for footing embedment) (2) ". The report further notes, "In our opinion, the indicated setbacks are adequate from a geotechnical perspective ". Approximately, 1400 cubic yards of soil will be cut from the site. This cut is necessary for the construction of house foundations and improvements to the access road. Upon completion of the project, 5.6 percent of the site will be covered with impervious surface. •Air Construction activities during construction may have some impact on air quality. The impacts may include dust particles and automobile exhausts. After the project is complete, additional traffic from the development will generate air impacts. • Water There is no surface water body on or immediately adjacent to the property. The nearest water body would be the Duwamish River which is approximately four miles away. As noted the property contains a very large ravine. A report by PBS Engineers notes that the ravine area contains a type IV watercourse and a type III wetland. The applicant's proposal avoids impacts to the watercourse and the wetland and their associated buffers. Stormwater from the project will be directed to the sensitive area buffer. A gabion outfall energy dissipater will be used to prevent the stormwater flow from eroding the ravine. The applicant is not required to meet water quality requirements because of the small amount of stormwater flowing from the new impervious surface on the site. The impervious surface on the site is also considered "low pollution" generating and consists of the driveways and roofs. The project will have no impacts on groundwater within the area. • Plants • • Brandon Miles E07 -010, McCarter Homes SEPA Staff Report The southern portion of the property contains grasses, shrubs, and blackberries. The ravine area consists of a mature forest and includes deciduous and coniferous trees. The trees will be retained as a result of this project. The applicant has proposed minor trees plantings around house B. A portion of the access easement includes fruit trees. These trees are proposed to be removed when the access drive is improved from a gravel road to asphalt. The City expressed some concern regarding the heath of twenty three trees on an adjacent property not owned by the applicant. The applicant submitted an arborist report dated August 17, 2007 which indicates that the impact to the trees would be minimal and that is highly unlikely that the trees would die as a result of the construction of the access road and installation of utilities. Some utilities have been rerouted in order to minimize impact to the trees. • Animals The animals on site are typical of those found in urban settings, such as birds and rodents. The property is bordered by residential development and the site is too small to provide habitat for any large species of mammals. The entire Puget Sound region is part of the Pacific Flyway for migrating birds. There are no known endangered or threatened species on the property. • Energy/Natural Resources During construction gasoline will be needed for operation of machinery and automobiles on the property. The project will have no affect on the potential for solar energy. • Environmental Health Noise from the project will be short term and will be associated with heavy construction equipment. The applicant will be required to meet the City's Noise Ordinance for work within residential districts of the City. The proposed homes may be impacted with noise from landings and takeoffs from King County Airport (Boeing Field). The City currently has no regulations requiring specific building modifications to homes in the King County Airport noise impact zone. In a letter dated July 11, 2007, Mr. Stewart Shusterman expressed concerns that the removal of trees on the site and access easement would increase noise from I -5, which would impact his quality of life and property values. It is unknown if this would occur since the removal of trees on the site is minimal. The City has no code provisions to require the applicant to replace trees that are removed in areas that are outside of a sensitive area. Land /Shoreline Use Brandon Miles E07 -010, McCarter Homes SEPA Staff Report The property is currently undeveloped land. The current zoning on the property is low density residential (LDR). The proposed use of the property is residential which is a permitted use in the LDR zone. • Housing The site is currently vacant. When the project is complete, two new single family homes will be constructed on the site. • Aesthetics The applicant is required to comply with the City's Development standards within the LDR zone. The LDR allows a maximum height of 30 feet (TMC 18.10). The applicant will also be required to conform to the City's single family design standards (TMC 18.50). The applicant will retain as many trees as possible, this will help reduce any aesthetic impacts from the development. , If the applicant should remove trees on the slope area, then replacement would be required under the City's tree protection ordinance. Mr. Shusterman's letter noted concern with the removal of trees on the eastern portion of the access easement which he has noted would "increase visibility of I -5 and adversely impact the value of my property ". The applicant is not proposing any replacement trees for the trees that will be removed within the easement area. The removal of these trees is not subject to the City's Tree Clearing requirements. . Light and Glare Lighting impacts will be minimal and will remain on site. Recreation There are not parks or recreation areas within the immediate vicinity. Mr. Shusterman's letter notes that there is a trail used for pedestrians and horseback riders on the two subject parcels. Additionally, he has noted that there is a "substantial" tree house on the property. • Historic and Cultural Preservation No known places or landmarks exist within the project area. During construction if any landmarks or evident of historical, archaeological, scientific, or cultural importance are found on the site, work will stop immediately and the contractor will notify the City of Tukwila, Washington State Office of Archeology, and the Muckleshoot Indian Tribe. • Transportation • • Brandon Miles E07 -010, McCarter Homes SEPA Staff Report Additional traffic will be generated from the new homes once construction is complete. A pre- existing access easement will be used to provide access to S. 150`h Street. The site is not served by public transit and the nearest transit stop is approximately 3/4 of mile down S. 150`h As noted, the site is currently served by a 30 foot access easement. The easement is currently graveled and the applicant is required to upgrade the gravel to asphalt. The gravel portion of the easement is approximately 12 feet wide. The applicant will provide 20 -feet of asphalt paving, all located with the easement area. Retaining walls will also be constructed within the easement area and are proposed to be constructed within the ROW of S. 150`h Street. Public Services Minor increase in the need for EMS, Fire, and Police services. Utilities Sewer, water and natural gas is located within S. 150`h Street. The applicant has proposed to extend these utility lines from S. 150`h Street to the two parcels that will be developed. Power poles are located within the easement access easement and the applicant will extend power from one of the current poles. The new electric service will be underground, as required by City Code. Two private sewer pumps will be installed on the applicant's property to push wastewater towards Valley Vue sewer main located on S. 150`h Street. Utility Providers: Electricity Seattle City Light Natural Gas PSE Water WD 125 Sewer Valley Vue Recommendation: Determination of Non - Significance August 17, 2007 Michael McCarter McCarter Properties, LLC 3033 NW 70th Street Seattle, WA 98117 City of Tukwila Dept of Community Development 6300 Southcenter Blvd., Suite 100 Tukwila, Washington 98188 • Subject: Summary of Attachments for Project E07 -010 The attached documents are being submitted in response to the August 2nd, 2007 letter from the City of Tukwila (Brandon Miles) regarding the SEPA evaluation and permit applications for Project E07 -010. Rather than submitting 4 copies of each artifact, we have doubled the quantity so that you can update your files appropriately for both proposed homes. The list below summarizes each of documents requested by the Planning Department and highlights any changes that have been made from originals submitted: • 8 Copies of Utility and Tree Location Plans — The change to this plan pertained to the adjustment of some electrical conduit and the sewer lines (changed area highlighted in yellow) which was done to avoid any potential interference with tree root structures (now shown). • 8 Copies of Grading Plan — This sheet was updated to show the "average grade plane" correctly calculated 6 feet out from the perimeter. This calculation follows the City of Tukwila standards and allowed for an accurate reflection of proposed building heights (confirmed that we are within guidelines) • 1 Copy of Tree Location Plan — This sheet fulfills the final outstanding request from the SEPA review by showing locations and driplines for all significant trees within 15' East of where the driveway easement terminates. No trees were marked with X's because none have been targeted for removal. • 1 Copy of Consulting Arborist Report — This was not specifically requested by the City, but rather their analysis resulted from the creation of the deliverables above and has been included for reference As you can imagine, I am eager to complete the permitting process without any further delays. I am targeting completion of major site improvement activities prior to the end of the 'dry season' and thus additional delays could likely result in the entire project slipping by up to 9 months and incurring large costs as a result. Thank you for all of the diligence, rigor and technical support that has been applied over the last six months and thanks in advance for your prompt attention to this final set of additional materials. Please direct any further questions to Gwendolyn M. McHugh, P.E., at Layton Sell Engineering at (425) 825 - 17354. Sin, �i!i2� lelly� --C Michael McCarter 10326 46th Avo NE Seattle WA 98125 Ph[206J 522 7262 Fax (206) 268 0373 www.traal napacto rco m Michael McCarter 3033 NW 70th St. Seattle WA 98117 8/17/ Overview Plans are underway for the development of the site denoted 48XX S 150th Street in the City of Tukwila. The City of Tukwila planning department has expressed concern about several trees growing on the adjacent property. Concerns stem from the proposed improvements to the existing driveway and the excavation required for the installation of underground utilities. The concerns are outlined in the Sepa review E07 -010 8 /2 / 07 by Brandon Miles Assistant Planner with the City of Tukwila. To view the site, review plans and to evaluate the health and condition of the trees and to assess the potential impact of the proposed construction a site visit was made on 8 / 14 / 07. Observations Twenty three trees were inspected in four species; the species represented are: • Douglas fir (Pseudotsuga menziesii) • Western redcedar (Thuja plicate) 1 • • • Horse Chestnut (Aesculus hippocastanum) • Holly (Ilex aquifolium) The trees form a hedge screen planting to the east of the existing driveway. In general the trees show moderate to good health and are immature examples of their respective species. As such, these trees exhibit good survivability characteristics. The driplines of the trees were measured to establish Tree Protection Zones within the critical root areas of the trees. The driplines are shown on the plans. Plan review indicates that the excavation for the utilities will occur outside the driplines of the trees. Conclusions The age, size and condition of the trees indicate tolerance to disturbance. The location of the trenching, as discussed on site and as shown on the plan indicates only minor disturbance. Some absorbing root damage may occur but these roots are readily generated and no long term deleterious effect on the trees is predicted. I hope the preceding information is useful. Please let me know if you require further assistance or have any questions. Yours sincerely 'Ay/4, Robert W. Williams Consulting Arborist ctRTIRCo AROORI3T 2 August 8, 2007 City of Tukwila Planning Attn: Brandon J Miles 6300 Southcenter Blvd. Ste 100 Tukwila, WA 98188 Re: Environmental Review, E07 -010 Dear Mr. Miles, RECEIVED AUG 3 0 2007 COMMUNITY DEVELOPMENT hope this.letter.is not. too late in reaching; you. I have serious concerns about any development of the property relatingto E07 -010. My property borders the land in review. Through the years I have witnessed the continual erosion of the, ravine. edge.. About .two-feet have disappeared throughout the past thirteen years some of which may have been caused by neighborhood children clearing a lot of vegetation. New development possibly would expedite that erosion. This area has many underground springs. After I purchased my property I added several. tons.ofsoil in` an'attemikto,even; out the northern section, but to no avail. That area has gone back to its original state. Even my house has been affected by the;springs'or just land settling. fhavedevelbpeda halfinchrgap and a noticeable °.sloop in my flooring in the northernmost area in my house. With all the new development in this area and the cutting of so many trees after the Longhorn Beetle scare; much of the'natural wildlife in -this area has disappeared which is the main reason I bought a house here. Homes bordering the ravine have tossed appliances, garbage, tires, etc. into the ravine causing even more damage to a fragile area. I am hopeful we can preserve what is left. Thank you for taking the time to read my concerns. I hope it will be of some help in this matter. Sincerely, Laurie Schwan 4810.5 -150ST .. .,. < Tukwila, WA'98188 206246= 4770 / e"maiI'- Iorime @mail com • TO: City of Tukwila .. RECEIVE Department of Community Development JUN 0'4 2007 TUKvviLA PUBLIC WORKS LAND USE Building File Number MIT ROUTING FORM 1 Planning Public Wo ks Fire Dept. ^' Police Dept. = Parks /Rec Project: . h • Update date:' Address: 2 t' Date. transmitted: Response requested by: Staff coordinator: 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.) E 194 t2,t vQ,u (Pu"_i C LvoiZLc5 aulizgoi ktaTS !o/. S i PA iglQ /n T• $ ,4-tTiet c�.t�.D Coy�`nf.NTS . O fdyv1 3/0 Plan check date: Comments prepared by: Update date:' • City of Tukwila • Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director August 2, 2007 Mr. Mike McCarter 3033 NW 70th St Seattle, WA 98117 RE: SEPA Review E07 -010 Dear Mr. McCarter: The City has completed its review of the above SEPA application. The project does an excellent job of avoiding impacts to the sensitive areas located on the property. Additionally, your decision to retain a large number of trees on the site is the exception and not the norm. Those trees will preserve and enhance the quality of life for the future homeowners and the existing residents. The City does have some concerns with the access easement and the impact on existing trees when the access is constructed. The City understands that trees within the designated easement area may have to be removed. However, there is a significant number of trees east of the access easement that may be impacted when utilities are installed and the road is cut. While the construction may not require that the trees be removed, the roots could be damaged resulting in the trees death. Please update the construction plans to show the location of all significant trees 15 feet east of where the access easement terminates. Mark with an "X" any trees that are to be removed and indicate if any tree protection measures are proposed. Generally, no excavating should occur beneath the "drip line" of any trees that are to be retained. In a separate matter not related to the SEPA review, the two homes appear not to meet the City height requirement of 30 feet. Height is measured using the State Building Code's definition of height. In order to determine height, the "average grade plane" needs to be defined on the plans. Average grade plane is the average elevation measured six feet from the foundation of the structure. This elevation will be the starting elevation to determine the maximum height. Created by B. Miles T- mccpA\mrr.rtar \A��ict 7 Firct rnmment tint - 1 - 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 A separate correction letter will be mailed from the permit center to address the issues regarding the building's height. The correction letter will provide details on how to resubmit on the height issue. Your next step for the SEPA process is to provide the updated construction plans as indicated above. Only one set of plans needs to be provided for the SEPA comment. If you have any questions, please call (206) 431 -3684 or send an email to bmiles @ci.tukwila.wa.us. Sincerel randon J. Mile Assistant Planner cc. File (E07 -010) Created by B. Miles H: \SEPA\McCarter \August 2, First Comment.doc - 2 - • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director July 31, 2007 Mr. Mike McCarter 3033 NW 70th St Seattle, WA 98117 RE: McCarter Homes Public Comment Letters E07 -010 Dear Mr. McCarter: Attached you will find two public comment letters that were received by the City for your proposed development. The proposed easement improvements will have an impact on the three properties where the easement is located. If you have not already done so, the City would strongly suggest that you touch base with each property owner and inform them of the specific impact to their property as a result of the easement improvements. If you have any questions, please contact me by phone at (206) 431 -3684 or send an email to bmiles@ci.tukwila.wa.us. Sincerel ndon J. Miles Assistant Planner cc. File 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 Jul 31 07 07:26p r r. a .n 1• l V it. STEWART WE COMPANY --Ps" • A 'Neaten E.eenenes- RLED FOR RECORD AT REQUEST OF WHEN RECORDED RETURN TO Name John M. Easter . Aes 18 1 ss 114"8! BY7NE DIV1SI0N OF RECORDS & El EC I IONS KING COON I Y Address 4820 South 14th Street vCity. State. Zip Seattle, Washington 98188 89/ 11£'13 WI K=UU ;- 'J • it l (1- 1364'6) PECF'=E 2. xt Statutory Warranty Deed PECFSL m 914 THE GRANTOR LILLIAN M. MOTT, as her separate estate, 206 - 782 -5301 THIS SPACE PROVIDED FOR RECORDER'S USE ,,!� G COUNTY ENCiSE TAX PAID AUG 18193 E107952 for and in consideration of Ten and No /100 Dollars and other valuable considerations in band paid. conveys and warrants 10 JOHN MICHAEL EASTER, an unmarried person, the following described real estate, situated in the County et * 1:E41 1 fl King • Slate of Washington: Lots 14 and 15, Block 2, Second Addition to Adams' Home Tracts, according to the plat thereof recorded in Volume 12 of Plats, page 90, in King County, Washington; EXCEPT the west 111.4 feet of said Lot 15. Grantor reserves an easement for ingress, egress and utilities over I D and across the east 30 feet of Loc 14 for the benefit of present and future owners of Lots 6 and 7, Block 2, Second Addition to Adams' Home Tracts, according to the plat thereof recorded in Volume 12 of Plats, page 90, in King County Washington. F•• .ac • Doted August 16, 1989 Li lean M. Mott John Michael Easter 55 • I WI `Or WAS1elEOTO11. , be11D, gnlly that 1 know 01 *Ira tes ..tl.l.cSOry ,..dMt, 1106 llowsloOlHol MO Mo. .� r1 N(.4111Ir1hsOurool C 60.1.4 1.110 .pW...d 1,00 ..n0. hq) 'lento I1./ 16.Irur.118n1 011 watery Oct b. IM .666 ..d Omit. 11104411 N �•� —... 04 (jl i OMUM ' «161 r1/ ti!iII0 f0 STATE Of.wAaltll6TOx I IN. booty to c.,Illy 1.,1 I tows o1 h.re v.1004101, o.ldonco IOW .. 11. osmosis) wlo •pp,onol ONaro ens .nd oast ps.oM•1 4008. .edged 11.1 .ho.M,.lhr,l .wood Iwo .IMIVOI65111. do 0.64 .161.0 11.46 11111k0.1•d to •.,A 111• .,..4UO.,o1 and •Urowlsd1M6 11 6. th. Ot to b IM Inds and 0dludl1ry .ol 0f .0.0 plat, Ion IM ,... .n0 pu.pol.s ...,165,.0 In this Int11011401 Malty 06111110 In doe lo. 1165 0.465 of Ml.h.n...n. .1,1141.1 11 Mt teep4lln11.1 napkin p.1 f. ■ ■ i • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director Mr. Mark Wahstrom 4802 S. 150th St. Tukwila, WA 98188 RE: Your letter, received by the City on July 10, 2007 McCarter Homes Environmental Review (E07 -010) Dear Mr. Wahstrom: The City is in receipt of your letter regarding the above project. The City understands your concerns that the two additional homes may have on the quality of life for residents on S. 150th Street. The City strives to protect the quality of life of existing residents, while at the same time respecting the rights of property owners who wish to develop undeveloped parcels. The applicant will construct two homes on two existing parcels. The applicant has not requested to create additional lots on his subject parcel. Each house will occupy .9 acres, which is well above the City's minimum lot area of 6,500 square feet. The applicant's proposal will have no any impact on the wetland and stream which is located on the property. Additionally, the applicant will maintain a minimum setback from the top of the slope as required by the applicant's geotechnical report. The applicant will also be required to comply with the City's development standards (setbacks, height, and building coverage) and home design standards (materials, roof pitch and location of the front door). The two homes will be architecturally similar to other homes in the area. If you would like go over the specific design of the homes or if you have any other questions please feel free to call me at (206) 431 -3684 or send an email to bmiles ' ci.tu ila.wa.us. I randon iles Assistant Planner cc. File 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 rom Expeditors International Tue Jul 10 16:33:58 2007 Brandon Miles Brandon Miles: Re: Proposed Construction on 150th Street. McCarter application Sir, Page 2 of 2 My name is Mark Wahlstrom and I live at 4802 S 150th Street, Tukwila Wa. 98188. I am writing today to oppose planned construction near my home on 150th street. My main concern is the loss of habitat in the area. I am not against construction but I am against home construction that cannot be accomplished without first creating a pad to put the house on. That seems to be the case with this project. The permit would be to move large amount of earth m order to create a space for a house. This area is a culvert that is over grown. It has never been developed as it is unsuited for this purpose in my opinion. The sides of the culvert are steep. There is little level land in the area. Each of the two proposed sites seems to run from one side of the culvert to the other and each consists of almost an acre of land. Yet in neither property is there enough level land to put a house with out creating additional level space at the expense of the landscape and animals that dwell there. There is certainly wetland m the basin of the property. I'll admit I feel like I have a special place at the end of 150th. It is peaceful and is abundant with wildlife that lives in and around the green areas near my home. I am not happy that additional housing, put where there should be no housing, is being considered. There is no need for our city to have to create land to build on at this time. For me this is what it comes down to really. Asa city what are our responsibilities. To concede to nothing more than money play or to really know about and manage the only resources we have in an intelligent and respectful manor to all concerned. Animals in my neighborhood: Rabbits, Squirrels, Finches, Robins, Blue jays, Chickadees, Snakes, Hummingbirds, Hawks, Eagles, Crows, Woodpeckers, Coyotes, as well as a few Rats. Thank you, Mark Wahlstrom 4802 S 150th St Tukwila, Wa 98188 July 11, 2007 Stewart L, Shusterman 4820 S 150th St. Tukwila, Washington 98188 City of Tukwila Department of Community Development Attn: Brandon J. Miles 6300 Southcenter Blvd., Suite 100 Tukwila, Washington 98188 Re: Environmental Review, E07- 2007 McCarter Properties Dear Mr. Miles: irtnotED 16 2001 otavatatiowuNny The following comments are submitted in response to the above referenced Environmental Review and the documentation submitted by the Applicant and made available by the City of Tukwila Department of Community Development. Access to the two lots proposed for development by the Applicant is by an easement on my property and easements on the two properties located immediately north of my property. The easement on my property, 30 feet wide by 172 feet long, includes an existing 12 to15 feet wide gravel drive serving the two previously developed properties to the north. The remainder of the easement consists of grass, natural growth, a variety of tree types including hazelnut and pear, and includes a vegetated slope over which overhead power lines are currently run. The proposed development of the easement includes a wider, paved access drive, retaining walls, installation of underground utilities, removal or disturbance of trees and other vegetation, and the channeling of surface water runoff from approximately 3,400 square feet of additional asphalt paving to an infiltration system with an off -site overflow outlet. A review of the submitted documents brings to light several issues which adversely impact my property, and quite possibly my current neighbors to the north and east. Other issues include safety and possible encroachment into an existing easement. Before responding to specific items on the State Environmental Checklist, 1 would like to briefly state my concerns. 1. Implementation of the proposed easement improvements on my property V will adversely impact the value of my property by increased visibility of the 1 -5 freeway and increased freeway noise due to removal of trees and vegetation currently acting as a buffer. No mitigation seems to have been presented. 2. Easement improvements proposed by the Applicant may impact improvements that I have planned for the area immediately west of the existing access /utility easement. July 11, 2007 Re: Environmental Review E07 -2007 Page 2 of 3 3. The Drawings indicate that surface water infiltration overflow from my property will be piped to an outfall on my neighbor's property. Is that appropriate? Is it also the intent of the Applicant to channel runoff from adjacent property to the infiltration system on my property? 4. It appears that one of the retaining walls is encroaching on an existing easement granted to Seattle City Light. Another retaining wall is also shown within the easement on the west side. 5. The Drawings indicate a hammerhead on the east lot proposed for development. If this is to accommodate fire fighting equipment, has the intersection of S 150th and the easement been reviewed for required turning radii? 6. The Utility Plan indicates that the existing water lines serving the two existing homes behind me are not totally within the easement. I would hope that this is something that could be rectified should the proposed development be approved. 7. It is not stated how waste /recycle pick -up will occur. Will Allied Waste be utilizing the easement or will the occupants of the proposed homes be required to take their containers to S 150th Street for pick -up? If the latter is the case, there does not appear to be adequate space for all eight of these containers, unless the intent is to obstruct the access drive or S 150th Street. / 4(4\ Ikry 8. As the Owner of property proposed to be developed by a third party, I am surprised that the Applicant has not contacted me to discuss his plans. The following comments are in response to the Applicant's responses noted on the State Environmental Checklist, with corresponding item numbers: B.3.c.1. The proposed storm water overflow system discharges storm water runoff from my property (portion of asphalt paved access drive, approx. 3,400 sf) off -site, onto neighbor's property. Does this condition comply with City design standards? B.3.d. Storm water runoff from my property is a potential negative impact to neighbor's property. B.4.a. Vegetation on my portion of access /utility easement also includes hazelnut and pear trees. B.4.b. Access /utility easement improvements proposed by the Applicant for my property will result in loss of hazelnut and pear trees. Additional small bushes and trees on the easterly slope on my property will require removal. B.5.a. Additional domestic animals observed on -site include horses. On -site birds include songbirds, goldfinches and woodpeckers, as well as other unidentified large birds. On -site mammals include wild rabbits. July 11, 2007 Re: Environmental Review E07 -2007 Page 3 of 3 B.7.b.2. Removal of trees and vegetation on the eastern sloping portion of the easement will increase freeway noise and adversely impact the value of my property. B.7.b.3. There are currently no measures proposed to control the noise impact created by the removal of trees and vegetation within the easement. B.10.b Removal of trees and vegetation on the eastern sloping portion of the easement will increase visibility of 1 -5 freeway and adversely impact the value of my property. B.10.c. There are currently no measures proposed to control the aesthetic impact created by the removal of trees and vegetation within the easement. B.12.b. Site includes trail used for pedestrians and horseback riders. There is also a substantial tree house that has apparently been there for some time. B.14.a. "Private driveway" is the Applicant's reference to a previously recorded access /utility easement located on three individual privately owned lots. The 30 feet wide easement on my property extends 172 feet, beginning at S 150th Street. The two other easements are approximately 64 and 74 feet long. B.14.d. The proposed development does not only include paving the easement's existing gravel drive, but also proposes increasing the width of the drive by over 50 %. Retaining walls are also proposed to be constructed on both private property and public right -of -way (S 150th St.). The proposed retaining wall on the east side o e south end of the access drive appears to be encroaching on a separat 10 feet wide utility easement (within the 30' easement) previously gran to Seattle City Light B.14.g. Per previous comment, access drive width will be increased by over 50 %, creating a drive that is somewhat more than "slightly wider ". B.16.a. With the exception of existing overhead electrical lines over the easterly portion of the access /utility easement, utilities are available within the S 150th Street right -of -way and will need to be installed along the length of the easement in order to provide service to the two lots proposed for development. Refer to B.14.d above for separate Seattle City Light easement. Thank you for the opportunity to submit my questions, concerns and comments regarding the Environmental Review of the McCarter properties, which includes the proposed development of my property as a necessary component of that development. Respectfully, Stewart L. Shusterman home: 206 - 248 -0307 work: 425 - 204 -4479 email: stewart.shusterman @renton.wednet.edu Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION I , r8i r - HEREBY DECLARE THAT: Notice of Public Hearing Determination of Non - Significance Project Name: )/2'7C _ --e4 Notice of Public Meeting Project Number:-7; 77 da Mitigated Determination of Non - Significance Mailer's Signature: Board of Adjustment Agenda Pkt Person requesting mailing: Determination of Significance & Scoping Notice Board of Appeals Agenda Pkt Notice of Action Planning Commission Agenda Pkt Official Notice Short Subdivision Agenda , V /iotice 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 listed on this day of in the year 20061 P:\ ADMINISTRATIVEFORMS \FORMS\AFFIDAVITOFDISTRIBUTION Project Name: )/2'7C _ --e4 ,I Project Number:-7; 77 da Mailer's Signature: g/LeCt- Person requesting mailing: ):'4 :, P:\ ADMINISTRATIVEFORMS \FORMS\AFFIDAVITOFDISTRIBUTION ( ) U.S. ARMY CORPS OF ENGINEERS () FEDERAL HIGHWAY ADMI TION ( ) DEPT OF FISH & WILDLIFE () U.S. ENVIF.ONMENTAL PROTECTION AGENCY () U.S. DEPT, F H.U.D. 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AIR POLLUTION CLEAN AGENCY () SOUND TRANSTT X.D3UWAMISH RIVER CLEAN -UP COALITION ENO NOTICE OF ALL APPLICATIONS ON [UNARM NAMISH RIVER ( ) HIGHLINE TIMES ( ) CI.TUKWILA.WA.US.VWW I SEPA MAILINGS Mail to: (comment period starts e of mailing) Dept. of Ecology Environmental lllGiew Section 'Applicant 'Other agencies as necessary (checked off on attached list) *Any parties of record send only the staff report, site plan and the SEPA Determination KC Transit Division. - SEPA Official would like to receive information about all projects that might affect transit demand Send These Documents to DOE: SEPA Determination (3 -part from Sierra) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant)• Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS: ofAppllcation for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The notice of Application for Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the notice of application. If a hearing will be held on the application, the hearing notice must include the information that written comments may be submitted, or oral presentation made at the hearing. Shoreline Permit Notice of Decision: Mail to: (within 8 days of decision; 21-day appeal period begins date received by DOE) Department of Ecology Shorelands Section State Attorney General 'Applicant . *Indian Tribes . . *Other agencies as necessary (checked off on attached list). •Any parties of record • send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: Permit Data Sheet Shoreline Substantial Development Permit (3 -part from Sierra) Findings (staff report or memo) Shoreline Permit Application Forin (filled out by applicant) Drawings/Plans of project site plan, elevations, etc. from PMT's) — Site plan, with mean high water mark & improvements — Cross- sections of site with structures & shoreline — Grading Plan — Vicinity map ' SEPA determination (3 -part from Sierra). Findings (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P: ADMINISTRATIVENFORMSTHICLIST.DOC ANDRADE, ANGEL 10925 SE 244TH ST KENT, WA 98030 BURNS, SHEILA J 14710 51ST AVE S SEATTLE, WA 98168 DINH, HAOI C 4818 S 150TH ST SEATTLE, WA 98188 DZURNAK, DAVID E & ARLENE C 4646 S 150TH ST TUKWILA, WA 98188 ERICSON, GREGORY A 7337 44TH AVE SW SEATTLE, WA 98136 GERKING, PHILLIP D & MAUREEN A 4618 S 150TH ST SEATTLE, WA 98188 HARWOOD, KENT 4658 S 150TH ST TUKWILA, WA 98188 JANDECKA, DARLENE L 4813 S 146TH ST TUKWILA, WA 98168 KNOLLMEYER, DANNY M & REGINA 4811 S 146TH ST TUKWILA, WA 98168 LATIFYAR, MASSEE 3218 S 152ND SEATTLE, WA 98168 ANGLE, JAMES I 4831 S 146TH ST SEATTLE, WA 98168 CHENEY, GAYLE LIVING TRUST PO BOX 1205 ROSEBURG, OR 97470 DO, HUONG 4819 S 150TH ST SEATTLE, WA 98188 EAGAN, DONALD 2802 S 146TH ST SEATTLE, WA 98168 FERRER, NARDITO N 14122 43RD AVE S SEATTLE, WA 98168 HANSON, SUSAN 4661 S 148TH ST TUKWILA, WA 98168 HUGO, MARK D & DEBORAH L 14904 46TH AVE S SEATTLE, WA 98168 KARTES, KEVIN R & TERESA M 4628 S 150TH ST SEATTLE, WA 98188 LABEL, SCOTT B & SHARON 4226 S 146TH ST SEATTLE, WA 98168 LE GAO VAN 4650 S 150TH ST TUKWILA, WA 98188 BOTHAM, RICHARD H 16334 LINDEN AVE N SEATTLE, WA 98133 CHO, SHERRI HYON 4630 S 150TH ST TUKWILA, WA.98188 DOUGHTY, TROY & TAMI PO BOX 68277 SEATTLE, WA 98168 ENG, MARC D 4836 S 150TH ST SEATTLE, WA 98188 FOLAU, ILAISE 14800 46TH AVE S SEATTLE, WA 98168 HAQ, SHAHID UL 4815 S 146TH ST TUKWILA, WA 98168 IRELAND, LINDA 14812 46TH AVE S TUKWILA, WA 98168 KETCHERSID, HAZEL H 14637 51ST AVE S SEATTLE, WA 98168 LARSON, RICHARD & KAY PO BOX 68267 SEATTLE, WA 98168 LISZKA, EMIL 14914 46TH AVE S TUKWILA, WA 98168 Susan Brock-- Mailing Labels_____ From: Brandon Miles To: Susan Brock Date: 06/21/2007 11:46 am Subject: Mailing Labels Susan, Can I get mailing labels for tenants and property owners within 500 feet of these two parcels? 004200 -0147 and 004200 -0148 Thanks Brandon Brandon J. Miles Assistant Planner Department of Community Development City of Tukwila tel (206) 431 -3684 fax (206) 431 -3665 bmiles @ci.tukwila.wa.us Page | o[| oOft CityGIS Copyright @o2000 All Rights Reserved. The nfomeitior coritinect herein is the propietar property mthe contributor supplied under license, and may not be approved eycept as licensed try Digital Map Products. |U<p://nupu.digito| .cn tiun/(i|y(US/V07,ho2/odom/\.htnn| 00/21/2007 NAME ADDRESS CITY STATE ZIP ANDRADE, ANGEL 10925 SE 244TH ST KENT WA 98030 ANGLE, JAMES I 4831 S 146TH ST SEATTLE WA 98168 BOTHAM, RICHARD H 16334 LINDEN AVE N SEATTLE WA 98133 BURNS, SHEILA J 14710 51ST AVE S SEATTLE WA 98168 CHENEY, GAYLE LIVING TRUST PO BOX 1205 ROSEBURG OR 97470 CHO, SHERRI HYON 4630 S 150TH ST TUKWILA WA 98188 DINH, HAOI C 4818 S 150TH ST SEATTLE WA 98188 DO, HUONG 4819 S 150TH ST SEATTLE WA 98188 DOUGHTY, TROY & TAMI PO BOX 68277 SEATTLE WA 98168 DZURNAK, DAVID E & ARLENE C 4646 S 150TH ST TUKWILA WA 98188 EAGAN, DONALD 2802 S 146TH ST SEATTLE WA 98168 ENG, MARC D 4836 S 150TH ST SEATTLE WA 98188 ERICSON, GREGORY A 7337 44TH AVE SW SEATTLE WA 98136 FERRER, NARDITO N 14122 43RD AVE S SEATTLE WA 98168 FOLAU, ILAISE 14800 46TH AVE S SEATTLE WA 98168 GERKING, PHILLIP D & MAUREEN A 4618 S 150TH ST SEATTLE WA 98188 HANSON, SUSAN 4661 S 148TH ST TUKWILA WA 98168 HAQ, SHAHID UL 4815 S 146TH ST TUKWILA WA 98168 HARWOOD, KENT 4658 S 150TH ST TUKWILA WA 98188 HUGO, MARK D & DEBORAH L 14904 46TH AVE S SEATTLE WA 98168 IRELAND, LINDA 14812 46TH AVE S TUKWILA WA 98168 JANDECKA, DARLENE L 4813 S 146TH ST TUKWILA WA 98168 KARTES, KEVIN R & TERESA M 4628 S 150TH ST SEATTLE WA 98188 KETCHERSID, HAZEL H 14637 51ST AVE S SEATTLE WA 98168 KNOLLMEYER, DANNY M & REGINA 4811 S 146TH ST TUKWILA WA 98168 LABEL, SCOTT B & SHARON 4226 S 146TH ST SEATTLE WA 98168 LARSON, RICHARD & KAY PO BOX 68267 SEATTLE WA 98168 LATIFYAR, MASSEE 3218 S 152ND SEATTLE WA 98168 LE GAO VAN 4650 S 150TH ST TUKWILA WA 98188 LISZKA, EMIL 14914 46TH AVE S TUKWILA WA 98168 MARKHAM, HOWARD 4823 S 146TH ST SEATTLE WA 98168 MCCARTER, MICHAEL D 3033 NW 70TH ST SEATTLE WA 98117 MCELREA, ROBERT T 6139 NEWTON LINE RD HARRISON AR 72601 MEKONNEN, FITSUME MEHARI 4621 S 150TH ST SEATTLE WA 98188 NGUYEN, MIKE D 2400 ELLIOTT AVE 119 SEATTLE WA 98121 NOAKES, JOHN B & KATHERINE K 4642 S 150TH ST SEATTLE WA 98188 NAME ADDRESS CITY STATE ZIP O CONNOR, JAMES D 4819 S 146TH ST SEATTLE WA 98168 OCONNOR, DANIEL P & TINA M 4653 S 150TH ST TUKWILA WA 98188 OWENS, BETTYE M PO BOX 12493 SEATTLE WA 98111 PIERCE, DAVID A 4620 S 150TH ST TUKWILA WA 98188 PLUMB, D M 4646 S 148TH ST SEATTLE WA 98168 POLLINGER, JOHANN & HILDEGARD TRUST PO BOX 426 GRAPEVIEW WA 98546 PRITCHARD, ANDREW H 4626 S 150TH ST TUKWILA WA 98188 QUINN, DESEAN A 4636 S 150TH ST TUKWILA WA 98188 RAMIRES, JOSE A 14940 51ST AVE S TUKWILA WA 98168 REID, AARON A 14631 51ST AVE S SEATTLE WA 98168 RICHARDSON, MONTE & JESSICA L 4632 S 148TH ST TUKWILA WA 98168 ROBERSON, MYRTLE PO BOX 68543 SEATTLE WA 98168 SCHWAN, LAURIE 4810 S 150TH ST SEATTLE WA 98188 SHUSTERMAN, STEWART L & JULIAN 4820 S 150TH ST SEATTLE WA 98188 SIDHU HOMES INC 4224 S 148TH ST TUKWILA WA 98168 SINGH, GURDIP 4228 S 148TH ST TUKWILA WA 98168 STADLER, JON P 4837 S 150TH ST TUKWILA WA 98188 STAR NURSERY 13916 42ND AVE S SEATTLE WA 98168 SUTTON, JEFFERY 0 & SEVGI 4801 S 150TH ST SEATTLE WA 98188 SWANBERG ,DONNA TRUST 14809 51ST AVE S SEATTLE WA 98168 TEAYS, JAMES R 4633 S 150TH ST SEATTLE WA 98188 WAHLSTROM, MARK E 4802 S 150TH ST SEATTLE WA 98188 WEISSENFELS, GARY R & LEE L 14824 46TH AVE S TUKWILA WA 98168 TENANT 14702 51ST AVE S TUKWILA WA 98168 TENANT 14859 51ST AVE S TUKWILA WA 98168 TENANT 15005 51ST AVE S TUKWILA WA 98188 TENANT 4614 S 148TH ST TUKWILA WA 98168 TENANT 4615 S 148TH ST SEATTLE WA 98168 TENANT 4635 S 148TH ST SEATTLE WA 98168 TENANT 4643 S 146TH ST TUKWILA WA 98168 TENANT 4644 S 148TH ST TUKWILA WA 98168 TENANT 4651 S 146TH ST TUKWILA WA 98168 TENANT 4656 S 150TH ST TUKWILA WA 98188 TENANT 4815 S 150TH ST TUKWILA WA 98188 TENANT 4816 S 150TH ST TUKWILA WA 98188 TO: City of Tukwila Department of Community Development File Number LAND USE PERMIT ROUTING FORM Building Planning Public Works L Police Dept. La Parks /Rec Project: s, 15)1'1 .1.2'11 M(ct../lIzi (iptIts Comments prepared by Address: Update date: Date transmitted: Response requested by: • Staff coordinator: 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.) 5194 -'�� ,. ` i' �1Q`)S� P 1�iS� -2 OS � � � 4 Cl,cs S g (-r n5 5 \t"\wWL g " Lb*. , z� �\ \N s .Sti•o►1\ Plan check date: 1 \1( bi Comments prepared by j�? Update date: TO: City of Tukwila Department of Community Development File Number 7-019 LAND USE PERMIT ROUTING FORM in Planning Public Works Fire Dept. ]' Police Dept. !__ Parks /Rec Project: `J fih 01 51 15 ct•/1/ Iile") Address: Date transmitted: Response requested by: Staff coordinator: 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.) 5E19A- S) 0 (AL Plan check date: �� 7� o 7 Comments prepared by: Update date: MEMORANDUM TO: PLANNING DEPT. — Brandon Miles, Assistant Planner 404461A FROM: PUBLIC WORKS DEPT. — David McPherson, Development Engineer DATE: August 3, 2007 SUBJECT: McCarter — 2 Single Family Residences 4812 South 150th Street SEPA Comments SEPA — E07 -010 1. Project to comply with Geotechnical Engineering Report, by Icicle Creek Engineers, dated July 9, 2007 and subsequent geotechnical reports. 2. Traffic Concurrency Certificate Application shall be completed and provided to Public Works, by Owner /Applicant; as part of Building permit no. D07 -043 (or) D07 -044. The environmental checklist should be revised, as follows: A. Background 9. Add — Water Dist.125 for water services & Valley View Sewer Dist. for sanitary sewer connections. 12. Add - Portion of site is within class 2 and 3 landslide hazard area B. Environmental Elements 1. Air d. Add — Best Management Practices measures to be used. 2. Water d. In addition describe water quality facilities, i.e. Bioswales 5. Animals a. birds — The site will remain partially native and is near native areas. Many common species of birds may be on the site on occasion. c. Yes — This area is part of the Pacific Flyway. A primary corridor for migratory bird species. 7. Environmental Health a. 1. Add — Typical including Fire, Police, and Medical. b. 3. Add — Daytime hours of construction. • CITY OF TUKWILA Department of Community Development ENVIRONMENTAL 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 R F C N ^ REVIEW E -mail: tukplan @ci.tukwila.wa.us •. SEPA JUN 01 21101 COMMUNiTY APPLICATION ••11 NAME OF PROJECT/DEVELOPMENT: IVC CA r Res,'c)e vc- LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. V2xx So +k /so +k S erf 7�kwt7A, WA 98 / 8 LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). '/zoo —o/Y Z AA/1' 90100— OJyg 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: G CA.ef &12 Address: 3,33 Aria 7O" 6-i- Phone: 2062. 571, /73/5 J E -mail: ,DdM O,►LT/u° '0 6 Signature:` / G - FAX: 206 -S37 - .Soby /I C.Coni Date: a —Z9 -07 P: \Planning Forms \ Applications \ SEPAApp-6-06.doc December 4, 2006 FOR STAFF USE ONLY Permits Plus TYPE P-SEPA Planner: File Number: '01 0 1 0 Application Complete (Date: ) Project File Number: Application Incomplete (Date: ) Other File Numbers: NAME OF PROJECT/DEVELOPMENT: IVC CA r Res,'c)e vc- LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. V2xx So +k /so +k S erf 7�kwt7A, WA 98 / 8 LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). '/zoo —o/Y Z AA/1' 90100— OJyg 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: G CA.ef &12 Address: 3,33 Aria 7O" 6-i- Phone: 2062. 571, /73/5 J E -mail: ,DdM O,►LT/u° '0 6 Signature:` / G - FAX: 206 -S37 - .Soby /I C.Coni Date: a —Z9 -07 P: \Planning Forms \ Applications \ SEPAApp-6-06.doc December 4, 2006 Jun X22 07 03:21p 206- 782 -5301 p.1 rT g. - 01e. . �0 �j !J- 49467 CITY OFTUKWILA Department of Coinnziwi#j Development '6300Southrenter Boulevard, :Tub -u;ita, WA 98188 Telephone :. (206) 431.3670 FAX (j 06),01,3665 E- mail: tukptan@ci.tukwila.wa.us r)c. AFFIDAVIT OF INSTALLATION AND POSTIN OF PUBLIC INFORMATION SI.GN(S), I I _7v[ C6i rf e2 :- (PRINT NAy ) 'understand that Section 18.104.110 of the Tukwila Municipal Code'requires me to post.the `lroperty no later than fourteen (14) days following the issuance of the Notice of'Cornpleteness. t, :1 certify that on ��2 -' b the Public Notice Board(s) in accordance with Section 18 :104 :110 .. and the other. Jcapplicable guidelines were posted on the property located at y�xk jo ,': /5o V. so askto be clearly seen from each right -of -way primary. vehicular access to the property for application file number FO - - J, ' a I1terewith authorize .'..the City , of Tukwila or, its representative to remove and immediately dispose of the sign at the property:ow•ner's expense, if not removed in a timely manner or within fourteen (14) clays of • a Notice letter. r On this' day personally appeared before me' 14 te'me'kiiciwn to be tfie' i,tidividual who executed the foregoing instrument and acknowledged that helshe: signed:.the same his' her voluntary act and deed for the uses,and purposes mentioned therein. • Applicant or Project Manager's Signature SUBSCRIBED AND SWORN to before me this 15-174. day of (Y1,1 CYNTHIA TERANISH STATE OF WASHING-MRTAR NOTARY • — PUBMPidin. l CoiANftSS1011 EXPIRES 09.11 -07' cc',' ,20C PUBL1 in and for the State of-Washington at 3 1l -tie 'mission expires on P`. \Planning Forms\ Applications \SignSpecNandout- 12- 06.doc October 20, 2006 • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF COMPLETE APPLICATION June 5, 2007 Mr. Mike McCarter 3033 NW 70t ST Seattle, WA 98117 Subject: McCarter Homes E07 -010 Dear Mr. McCarter: Your application for SEPA review for the cut and fill of 500 cubic yards and the construction of two homes is considered complete on June 5, 2007 for the purposes of meeting state mandated time requirements. The next step is for you to install the notice board on the site within 14 days of the date of this letter. You received information on how to install the sign with your application packet. If you need another set of those instructions, please call me. Once you have notified me that the notice board has been installed you may obtain a laminated copy of the Notice of Application that you will post on the board. After installing the sign with the laminated notice, you need to return the signed Affidavit of Posting to our office. The Notice of Application will also be mailed by the City to all tax payers and residents or businesses within 500 feet of the site. 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. Page 1 06/05/2007 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 I will be contacting you soon to discuss this project. If you wish to speak to me sooner, feel free to call me at (206) 431 -3670. Brandon J. Miles Assistant Planner cc. E07 -010 Page 2 06/05/2007 r CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 E -mail: tukplan@ci.tukwila.wa.us SEPA ENVIRONMENTAL REVIEW INFORMATION The State Environmental Policy Act (SEPA) requires all agencies to consider the environmental impacts of a development before making decisions (43.21 C RCW). The purpose of environmental review is to identify a proposal's significant adverse impacts, measures to minimize or avoid such impacts, and allow wide public review for a wide range of projects. REQUIREMENTS: SEPA review is required for any action associated with the following types of decisions: 1 Developing more than 4 dwelling units. 2. Agricultural structures over 10,000 s.f. 3. Office, school, commercial, recreational, service or storage buildings over 4,000 s.f. and 20 parking spaces (certain utility lines, personal wireless communication facilities, and normal maintenance /replacement activities are fully exempt). 4. Parkin lots with over 40 s aces. 5. andfills and excavations over 500 cubic y ar s. 6. Land use decisions involving a subdivision of land into 5 or more lots, design review, a Conditional Use Permit, or an Unclassified Use Permit. The accompanying application must be completed. If a question does not apply, "Does not apply" or "NA" may be entered. Complete answers to the checklist may /avoid unnecessary delays later. City staff may also be able to help about governmental designations (e.g., zoning, shoreline, and landmark status). PROCEDURES: At the time you submit your application you must have all of the items' listed on the attached "Complete Application Checklist" as well as the submittal for the underlying action (building permit, subdivision etc.). You may request a waiver from items on the checklist that are not applicable to your project. Please discuss this waiver request with City staff either at a pre - application meeting or at the time of application submittal. Within 28 days of receiving your application, City staff will determine if it is complete based on the attached checklist. If not complete City staff will mail you a letter outlining what additional information is needed. If you do not submit requested materials within 90 days from the City's request for additional information the City may cancel your application. Once the application is "complete," substantive review will begin and a "Notice of Application" must be posted/mailed to begin a public comment period. After completing the environmental analysis and considering public comments, the Director will issue a determination for the project. A Determination of Non - Significance (DNS) says that the project as proposed will not have probable, significant, negative environmental impacts. A mitigated DNS will be issued if the project must be modified to mitigate its negative impacts. An Environmental Impact Statement (EIS) must be prepared if the probable negative impacts are unavoidable. P: \Planing Forms \Applications \SEPAApp- 6- 06.doc December 4, 2006 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). RECEIVED Check items submitted< with ' application •Information "Required: 'JUN. ® Z May be waived`in. unusual cases upon approval of both Public: Works and Planning °p9E OPNENT APPLICATION MATERIALS: V— 1. Application Checklist (1 copy) indicating items submitted with application. 2. Completed ESA Screening Checklist, SEPA Environmental Checklist and drawings (5-copies). I/ -3. One set of all plans reduced to 8 1/2" by 11" or 11" by 17 ". 4. Application Fee $590. 5. Underlying permit application that triggers SEPA review. PUBLIC NOTICE MATERIALS: 6. Payment of a $365 notice board fee to FastSigns Tukwila or Provide 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). 7. Payment of a $100 mailing label fee to the City of Tukwila or 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 (see Public Notice Mailing Label Handout). WA 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: j 9. Vicinity Map with site location. . 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 Guidelines and Sensitive Area Special Study Guidelines (online at www. ci .tukwila.wa.us /dcd /dcdplan.htm) for additional information. NA 11. Any drawings needed to describe the proposal other than those submitted with the underlying permit. Maximum size 24" x 36 ". P: \Planning Forms \Applications \SEPAApp- 6- 06.doc December 4, 2006 7! STATE OF WASHINGTON • • CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 E -mail: tukplangci.tukwila.wa.us RECEIVED JUN 01 2Giil COMMUNI TY DEVELOPJENT AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS PERMISSION TO ENTER PROPERTY 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 .em�� es, agents, e� 0 e , contractors or other representatives the right to enter upon Owner's real property, located at ��jj//�� 5 / 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, unless the loss or damage is the result of the sole negligence of the City. 6. Non - responsiveness to a City information request for ninety (90) or more days, shall be cause to cancel the application(s) without refund of fees. EXECUTED at /" si..li `s._ (city), yv/`T (state), on /✓ nom- / SL I , 20 (9?— Print Name ke- M CCA ,4 Address 303 3 NL.) 1 Oi-" S-{- Phone Number 20( •. 7 9 A/3" Signature On this day personally appeared before me '"\t C)4No.. .- J • \ c 1e_\ . ( -Q.A( to me known to be the individual who executed the foregoing instrument and acknowledged that he/she signed the same as his/her voluntary act and deed for the uses and purposes mentioned therein. SUBSCRIBED AND SWORN TO BEFORE ME ON THIS 15� DAY OF u t. e _ , 20 111tett,(�GO�11- �- %, Ir 4s Ic ��i' NOTARY PUBLIC in and d for ch Mate f Washington Q• • SSI�:�y Q = °�. \OTA,9y pm�i °•°"4+ °' i ksiding at • d (( : cn�'. '°UB L \G 2 �\ on • 2,, `� l l . ,,,, O•-21-'N... 4, is My Commission expires C7 t OF WASN', rllt �''' ",. / //iiir P: \Planning Forms \ Applications \ SEPAApp-6-06.doc December 4, 2006 RECEIVED May 31, 2007 JUN 01.2001 COMMUNITY City of Tukwila DEVELOPMENT Permit Center 6300 Southecenter Blvd., Suite 100 Tukwila, WA 98188 To Whom It May Concern: The attached documents pertain to Permit Applications D07 -043 and D07 -044 which were previously approved by all groups with the exception of some comments from the planning department. The comments consisted of the need to perform a SEPA application and checklist due to the fact that cut & fill for the project exceeds the 500 cubic yard maximum. Additionally, there was a concern about potential work within a wetland buffer (requiring Special Director's permission), however this was avoided by reducing the length of a stormwater pipe so that it terminates outside the buffer area. Other than shortening the stormwater, the site plans remain unchanged from the time they were initially reviewed by the city. Please find the attached items for your consideration: 1. SEPA Application with all required fees, checklists, and items 2. One set of all plans reduced to 11" x 17" 3. Original geotechnical Analysis (with Vicinity Map & site location) 4. Supplemental geotechnical Analysis (4 copies) 5. Original wetland analysis from PBS Environmental (4 copies) 6. Supplemental letter from PBS Environmental (4 copies) Please let me know if there are any questions that I can answer during the review process and I will be glad to assist. Sincerely, Michael McCarter Property owner 206.579.7315 City of Tukwila Endangered Species Act Screening Checklist Date: 5/3 i /d7 RecEwco JUN 01 aid DEVELM�N� l Y °PiVENT Applicant Name: Street Address: City, State, Zip: icX,te -1 4G'ke7 3033 ,Vk) 7° 14 6/ tA/4 9g' /? .Telephone: 000 5'? 73/5 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. P: \Planning Forms \ Applications \ SEPAApp-6-06.doc December 4, 2006 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 YES 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 ES 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. Continue 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 a propriate response. • NO - 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. NO - Continue to Question 6 -0 YES Continue to Question 6 -0 P:\ Planning Forms\ Applications \SEPAApp- 6- 06.doc December 4, 2006 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 establishment of new lawn or grass. Please circle appropriate response. NO — Checklist Complete ( E 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 w, mark is covered in Part C. Please circle appropriate response. ontinue 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. cnr,,, ase circle appropriate response. NQ) Continue 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. Continue to Question 2 -0 (Page 2) YES - ontinue 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. NO 1Continue 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. ase circle appropriate response. N 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 th- all. 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 or the Green/Duwamish or Black Rivers? Please circle appropriate response. !ercourse 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 tercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NOE- Continue to Question 3 -0 (Page 2) YES - Continue to Question 3 -0 (Page 2) City of Tukwila ESA Screening Checklist art 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 City of Tukwila ESA Screening Checklist 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. 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, if applicable: ,4 (i>127 e ,si ki/ee S 2. Name of Ap licant: 3. Date checklist prepared: 4. Agency requesting checklist: City of Tukwila 5. Proposed timi g or sc dule (including phasing, if applicable): aL- 54 -Il n-7, -A71< /J% — 71- j 6 v vcA✓✓ 4,- Oc ei 6. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. Agency Comments 0 7. List any environmental information you know about that has been prepared, or will be prepared, directly related to this prop sal. -- eld ss.;- 100 • F d (purls &vvJ ea -in.i►'4c J 0P 00 , / ket e.w OP sk p WINN 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. P: \Planning Forms \Applications \SEPAApp- 6- 06.doc December 4, 2006 Please respond to all questions. Use separate sheets as necessary. Applicant Responses: 9. List any government approvals or permits that will be needed for your proposal. 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. �a . f i&&I Al Ski nay e'eS chid. . civ J 4 07610-06/7 to ceS einnigglirMin Miry Agency Comments 11. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, the tax lot number, and section, township, and range. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted � ith any permit applications related to this checklist. S /S0141 �i 7ZL40 J 1. L/ / , :, 40." y. 12. Does the proposal lie within an area designated on the City's Comprehensive Land Use Policy Plan Map as environmentally sensitive? viv14V0t011i Please respond to all questions. Use separate sheets as necessary. Applicant Responses: B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous other: 5 1).‘i v o 0 ��� A 1. w; IeA.l% : p eon; : , e le/) Agency Comments pogritur pe4-e ee ( O -)) .9 "-/p re,v.�ve b. What is the steepest slope on the site (approximate percent slope)? 4viwe o, grope 2 4i',t?1 ,o,1 I ,y S e /04v wl l dope. APP 04641 5o /� � i-eepe_s 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. 11 11 Soil 6 0(4.;)1 1nackek r►-t ei� lv r~, I e)se 4 c)e - e sRNcx 5 r 1H1.e_rw 13Q AR_ e.2d �d d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, escribe. /o eves CNeR- : ; eiWtoni, Vi12-4I- 61010 OP. al-he (z )N- "tivP 61 cf -14,e ∎d e. siDpe possibly of mnN -m Ot ►lis (e3. -- -lv-,-4►1 e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. I 1 GRAdiNcf Will !� os 7n p!'epA Jr.w�k1H� .4 n14nckl SiIR4eJeS_ S16N+ rA1ii� C(pp2a1t. rioo euyct) ' of" O ki O oe_ Ay s 0...J1-genii-S., M v i „. /i/ �i1/ e re .fik de 14731;e4), d S'a S . Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments f. Could erosion occur as a result of clearing, construction, or use? If so, genera ly describe. , l doili e- - Sion) 1 Sect n ▪ e i- LeN[1441 Me/Ku 5 t.,k) 7 N n NAT tla c'o..)c- ZUc4ibnl : g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? 464 5'. /a (ysou.= gcno0) h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Se,.l-6 k 0P ao -P-1- P m sl-e.f-p slope -s 5 r14- -Pet.) Ana ekos it 648-9- CS :pee- sr e p1A-N3 IAN¥vv oP f�Sse_S Ana 141/.c)scApA 3 per .c .pi*t..J c?t.' eiv :4-e. die4IvItg s. 2. Air a. What types of emissions to the air would result from the proposal (for example, dust, automobile odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. 1 �-xj [ oorV S�Y�. 0 C.h4'&(1 - 62-4-F? 4-sso e N- 1��IIN TAU 5�1\1 to TFivni If►om °e b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. fJONe_. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments c. Proposed measures to reduce or control emissions or other impacts to air, if any: N/ 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, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. / SA-0/)-N O kaLv t l' (� oiu 1 Y� 1%1 s / /Q I pa -R ") W e��IAN4/ INA- 4- ekco1.A2yi d- h4214 C:?i" D t m As so Its W hiGA� I�ow covs'ige, A g /Oy w4ral i E4-<-7/ 6 u.7zig2 t kij/ Arvol /4ReA i S UN -41An1e, 2. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please adescribe and attach available plans. (. OR -l4C, c.�i�j oe.C.v2 ncf�N/teA {v 'tile k4369M-N 14)e4-kNik_ linua CAI eR uiaa 1Q4- oc.c.O Lt.)J o(Z pRS (Se s -e_ p1/41.)5 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. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: 4. Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. 5. Does the proposal lie within a 100 -year floodplain? If so, note location on the site plan. / v0 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. /VV Agency Comments b. Ground: 1. Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities, if known . (N e-X5 ,L /1 71-04-74‘ -/re.vd4 writ be- geld/geed N 1.J 17V 101 I /tl ZYv' r (j\ /4 Zw 771 a.,i 0.€ r r'iV �&IJ4 iNcT / R 7 �P' /1 k- ir?a/1/ Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 2. Describe waste materials 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: Alarve; Wy Se_tAiek s js i (1/4f ✓ve) w; Il be us- cot 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). Where will this water flow? Will this water flow? Will this water flow into other waters? If so, describe. SLR She pIA}N) Ohs S S SJcwzm t kuiv P •f oM rco P Agen tl be. se.J.74 40 oNs olrect iq oD1Ier rTr 5 S � ANA ��e�l �' pb/atJ & t tjj dtls vAlcR; Plows -}o t'Xis ki W Awl IN.) . 2. Could waste materials enter ground or surface waters? If so, generally describe. d. Proposed measures to reduce or control surface, ground, and runoff water impacts if any: ((rte_ 5409-(n k; .a -}tee Ron) o-rqc) t.S 11 cthe l. -O0, tee_ 4 4' s� S 1 k 4 Ab; of ou1�F tj eae i �rvs t1e co-0 0 e.N��� d.lss� �r�e� � $ low 4-he- 4? Ic eLNA pc)14.4N41 ' t- etosioni. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 4. Plants a. Check or circle types of vegetation found on the site: b. What kind and amount of vegetation will be removed or altered? ,Pe14-,vv Lf m M v /662, d vs . etri. Se-at. c. List threatened or endangered species known to be on or near the site. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: 6,,e4ss eS / //,-i we /0//4 v 74 i a , L.4>vdscAp , prim, Deciduous tre aide}' mil ,aspen, other Evergreen tree: 1 ceda ine, other Shrub rass.2 Pasture Crop or grain Wet soilslants: cattail, buttercup, bulrush, s unk cablog, other Water plants: water lily, eelgrass, milfoil, other Other types of vegetation b. What kind and amount of vegetation will be removed or altered? ,Pe14-,vv Lf m M v /662, d vs . etri. Se-at. c. List threatened or endangered species known to be on or near the site. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: 6,,e4ss eS / //,-i we /0//4 v 74 i a , L.4>vdscAp , prim, Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 5. Animals a. Circle any birds or animals which have been observed on or near the site or are known to be on or near the site: Birds: Hawk, heron, eagle, songbirds, other: Mammals Deer, bear, elk, beaver, other: Fish Bass, salmon, trout, herring, shellfish, other: Other ONie, dotneS-1, ri 1_ RN�rile -15 SPQ DAIS e (awls c+1 b. List any threatened or endangered species known to be on or near the site. dONt c. Is the site part of a migration route? If so, explain. d. Proposed measures to preserve or enhance wildlife, if any: Moke._ v 9o` n -(' M /pe-de ofree Runaaly i rve►4N r � di 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, manufac ing, etc. N 'As WTV be used .412 he,4-4,w an9 oc.a, - __.c_ .., LO 1 be_ o i Please respond to all questions. Use separate sheets as necessary. Applicant Responses: b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. 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: — 10,}'Vdvr...25 —/ ,)Vs )fP-) L b. u �4 oti . ' V N J Al S.C.). a V, LLI ini W AV /2- ()Se OP ttJ i )e grVsses -cae. IANdSC 4pihf rediv,lni � S - w� L7 ) � d Agency Comments 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. l'joN& 1. Describe special emergency servi zes that might be required. Aion)42- 042e_ E . 2: Proposed measures to reduce or control environmental health hazards, if any: — P-erzV;w.S p c,.; ill be us -f f�R'VeA.J -5 x 02 - runciiaug -(, er:vI=1-109-n! prod (e.5 64.4sspr+ve ys m). Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments b. Noise 1. What types of noise exist in the area which may affect your project (for example:, traffic, equipment, operation, other)? Ex/VAN/9 cke.e�- Nei coil NC-' )1f-r) pad pro J w)> /61-i a 1 m fop' 2. What types and levels of noise would be created by or associated with the project on a short-term or long -term basis (for example: traffic, construction, operation, other)? Indicatte what hours noise would come from the site. /I/c0 ,4-( -Mt' Sou. S w4i, ►gee- site.n X2.5 3. Proposed measures to reduce or control noise impacts, if any: 8. Land and Shoreline Use a. What is the currgnt use of the site and adjacent properties? 9P-S A-Aka- I 4-401%ed- b. Has the site been used for agriculture? If so, describe. {v0 Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments c. Describe any structures on the site. d. Will any structures be demolished? If so, what? /VON e. What is the current zoning classification of the site? Low de"), re- ,Ie",,4 i C (La rZ) f. What is the current comprehensive plan designation of the site? g. If applicable, what is the current shoreline master program designation of the site? 4 / 4 / 4 / 9 k G A h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. II 51-p slop e� Ar�JCL -p rvc0L r}c)j A--cn n,� Iry �4 ch �-�I NoI - be p> �d IIyy 4 e proJe- Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments Approximately how many people would reside or work in the completed project? s ��.� 4-n) 4✓ e-z�� A -n /'1V s %3 e o-' s pet A0aSe -71147,4--I Wood 6,P /0 people j. Appro imately how many people would the completed project displace? /o4 e k. Proposed measures to avoid or reduce displacement impacts, if any: NA 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: A) A 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low- income housing? 2 om�s Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low- income housing. AInN'C c. Proposed measures to reduce or control housing impacts, if any: 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? 30 -'ea.---- b. What views in the immediate vicinity would be altered or obstructed? c. Proposed measures to reduce or control aesthetic impacts, if any: f�� Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? j(J ex p e c—l�Ci b. Could light or glare from the finished project be a safety hazard or interfere with views? 1\/0 c. Whattexisting off -site sources of light or glare may affect your proposal? d. Proposed measures to reduce or control light and glare impacts, if any: Ajo nl€ 12. Recreation a. What designed and informal recreational opportunities are in the immediate vicinity? PJa roo 'c 11,0 9 r/ m e-iv S hod ezr 40(.1 Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments b. Would the proposed project displace any existing recreational uses? If so, describe. 0 c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: N6 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, National, State, or Local preservation registers•known to be on or next to the site? If so, generally describe. /)o b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. NONt_ c. Proposed measures to reduce or control impacts, if any: (V" 4 Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments 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. Soo 41-. 1 • o `µ` - n) 1 - •� - iv b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? No re_ S S 1 S L/ m ae-S ■ c. How many parking spaces would the completed project have? How many would the projec elimigate ?, / ch -um t,J'lJ hf1'V"e- ref -u C 4R- 30=haftq_p 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). kY13 0,1 pr,vd ertv - )g_Ne).3 ,u ail I e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. Please respond to all questions. Use separate sheets as necessary. Applicant Responses: f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would /occur. - u I• As l4 .. Pto- - 2. e L. cyP *v. +4 o ,n,oni v S Proposed measures to reduce or control transportation impacts, i any: 5bg-utw IA i I ?e -i-4944-6, (.c,".1a Agency Comments cf c Q_ $ 6)) 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. 1 c A M N' A- Al A '7C,(t • vi 5¢. -v' .5 b. Proposed measures to reduce or control direct impacts on public services, if any. Ml e5 � � v V' �di� i 16. Utilities a. Circle utilities currently available at the site: �c rici�t, atu ar 1 g ate use servic elepho anitary sewers tic system other: eivb k --ieleui itd Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be nee�ed. , P86 5-nfttax-pi s, € setz C A-(- Vat . .S� e. s i (la� -P, -- d 1S C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relyin: on them to mine its decision. Signature: Date Submitted: (NON- PROJECT PROPOSALS (E.G., SUBURBAN PLANS AND ZONING CODE TEXT CHANGES) MUST COMPLETE THE FOLLOWING PAGES). Please respond to all questions. Use separate sheets as necessary. Applicant Responses: Agency Comments D. SUPPLEMENTAL SHEET FOR NON - PROJECT PROPOSALS (do not use this sheet for project actions) Because these questions are very general, it may be helpful to read them in conjunction with the list of elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposals be likely to increase discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances; or production of noise? Proposed measures to avoid or reduce such increases are: 2. How would the proposal be likely to affect plants, animals, fish, or marine life? Proposed measures to protect or conserve plants, animals, fish, or marine life are: Please respond to all questions. Use separate sheets as necessary. Applicant Responses: 3. How would the proposal be likely to deplete energy or natural resources? Proposed measures to protect or conserve energy and natural resources are: 4. How would the proposal be likely to use or affect environmentally sensitive areas or areas designated (or eligible or under study) for governmental protection; such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitats, historic or cultural sites, wetlands, floodplains, or prime farmlands? Agency Comments Proposed measures to protect such resources or to avoid or reduce impacts are: 5. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? Please respond to all'questions. Use separate sheets as necessary. Applicant Responses: Proposed measures to avoid or reduce shoreline and land use impacts are: 6. How would the proposal be likely to increase demands on transportation or public service and utilities? Proposed measures to reduce or respond to such demand(s) are: Agency Comments 7. Identify, if possible, whether the proposal may conflict with Local, State, or Federal laws or requirements for the protection of the environment. To: • Michael McCarter Cc: Wendy McHugh Layton & Sell, Inc. From: James M. Brisbine, P.E. Date: May 25, 2007 • RECEWWE 01 2.1 COMMUNi MEMORANDUM DEVELOPMENT Subject: Supplementary Geotechnical Plan Review McCarter Tukwila Properties 48xx S. 150th Street Tukwila, Washington Job No.: 81065063 gX0:41:ir3 At your request, Zipper Zeman Associates, Inc. (ZZA) recently reviewed the geotechnical aspects of revised design /construction plans pertaining to the above - referenced residential lots. For purposes of our review, we were provided with the following revised plan sheets. • Civil Plans: McCarter Properties; Sheets C2.0 and C6.0 (originally dated January 15, 2007; last revised May 24, 2007) prepared by Layton & Sell, Inc. ZZA previously reviewed geotechnical aspects of the entire plan set for the project and then submitted our review comments in a memo titled Geotechnical Plan Review, McCarter Tukwila Properties, 48xx S. 150t Street, Tukwila, Washington (dated January 24, 2007). Project Description The project site comprises two adjacent undeveloped residential lots located in the Foster/Thorndyke neighborhood of Tukwila, Washington. These combined lots form a parcel that is visually delineated by existing residences on the west and south, and by a greenbelt ravine on the north and east. The parcel has a roughly rectangular shape that measures about 240 feet by 310 feet overall and encompasses approximately 1.7 acres. Future development plans call for building a single- family house on the southern portion of each lot, while leaving the middle and northern portions undeveloped. Both new houses will be two -story wood -frame structures with daylight basements. Access driveways comprising a combination of asphaltic pavement and pervious pavers will enter the site at its southeastern corner. Zipper Zeman Associates, Inc. Geotechnical and Environmental Consulting A lrerracon Company 14405 SE 36th Street #210, Bellevue, WA 98006 (425) 746 -1889 Fax (425) 746 -1296 • Review Comments • • McCarter Tukwila Properties Job No. 81065063 January 24, 2007 Page 2 The revised plan sheets indicate that roof - runoff water will still be routed down to the adjacent ravine via a 6- inch - diameter tightline outfall pipe, which discharges onto a gabion -type energy dissipater blanket. Although the overall design of pipes and blankets has not changed since the original plan set was issued, the specific location of the energy dissipater blanket has been changed; it has been shifted southward (upslope) sufficiently far to avoid encroachment into the nearby wetland buffer. This new location will result in a blanket - surface gradient that transitions from 43 percent at the upslope edge (pipe outlet) to 23 percent at the downslope edge. Stormwater will then discharge as sheet flow onto a 42- percent native slope. If properly constructed, we feel that this revised energy dissipation system will provide adequate erosion control within the ravine. Summary The geotechnical aspects of the revised plan sheets that we reviewed have been prepared . in general accordance with the geotechnical report and with our subsequent verbal recommendations, as well as with conventionally accepted geotechnical criteria. It is therefore our opinion that the geotechnical aspects of the proposed project can be successfully accomplished if proper construction methods are used and if all appropriate geotechnical•. recommendations are followed. Supplementary Gcotechnical Plan Review PBS May 10, 2007 Mr. Michael McCarter 3033 NW 70t St. Seattle, WA 98117 RECEIVED !nil 01 2 j COMMUNITY DEVELOPMENT RE: Delineation of Waters/Wetland on Property off S. 150th St., Tukwila, WA King County tax parcels: 004200 -0147 and 004200 -0148 Dear Mr. McCarter, PBS Engineering and Environmental (PBS) conducted a wetland reconnaissance on the above referenced property on August 27, 2005. A site plan was developed based on this preliminary survey and on critical areas information available through the City of Tukwila, King County and other sources. The site development plan was drawn up to avoid impacts to waters /wetlands and their buffers, with the exception of a storm water outfall. During initial review of the site plan, the City of Tukwila requested that the waters /wetland edge be delineated and a mitigation plan developed to offset impacts associated with the proposed storm water outfall within the buffer. The project was able to move the storm water outfall out of the buffer and further discussions with Brandon at the City Planning Department verified that a full wetland delineation report would not be required as long as the project avoided all impacts to waters/ wetlands and their buffers. In order to accurately show the waters /wetland boundary and buffer on the site plan I revisited the site on April 26, 2007 and delineated the southern boundary of the stream / wetland complex that borders the proposed development. The delineation was based on standard field indicators of wetland soils, hydrology and vegetation and on the ordinary high water mark of the stream where wetlands were absent. The field delineation verified the presence of a headwaters stream/wetland complex. The City of Tukwila has identified the stream as a Type 4 watercourse and the associated riparian wetlands would by considered Category 3 wetlands under the Tukwila Critical Areas Code. Buffers for both the stream and wetlands would be fifty feet. Wood stakes were placed along the waters /wetland southern edge, tied with pink wetland delineation flagging and numbered consecutively from east to west from 1 to 9. GPS points were taken at each wetland stake. The GPS stake locations are shown on Figure 1 for informational purposes only. The project surveyor will survey the stakes and locate the waters /wetland edge on the survey map and establish the 50' buffer. If any additional information on the waters /wetlands is required, please let me know. Thank you, L Katharine M. Lee Senior Project Manager PORTLAND SEATTLE VANCOUVER EUGENE BEND TRI- CITIES Mike McCarter — Tukwila Property Waters/Wetlands Delineation Figure 1. Waters/Wetlands Delineation flag locations as determined with a Garmin handheld GPS unit PBS Engineering and Environmental 2 May, 2007 To: Michael McCarter Cc: Wendy McHugh Layton & Sell, Inc. From: James M. Brisbine, P.E. Date: January 24, 2007 Subject: Geotechnical Plan Review McCarter Tukwila Properties 48xx S. 1501h Street Tukwila, Washington RECEIVED JUN 01 21! DE°EmProE MEMORANDUM' "r Job No.: 81065063 RiE1,210M At your request, Zipper Zeman Associates, Inc. (ZZA) recently reviewed the geotechnical aspects of design /construction plans pertaining to the above - referenced residential lots. For purposes of our review, we were provided with the following plan sheets and associated documents. • Civil Plans: McCarter Properties; Sheets C1.0, C2.0, C3.0, C3.1, C4.0, C5.0, C6.0, and C7.0 (dated January 15, 2007) prepared by Layton & Sell, Inc. • Architectural Plans (dual sets): Residence for McCarter, Lot 6/7; Sheets 1, 2, 3, 4, and G (dated June 2006) prepared by Alan Mascord Design Associates, Inc. • Structural Plans (dual sets): McCarter, Lot 6/7; Sheets Ll, L2, L3, and L4 (dated July 6, 2006) prepared by Stoney Point Engineering. • Drainage Control Report: McCarter Properties; 21 pages (dated January 15, 2007) prepared by Layton & Sell, Inc. • Geotechnical Report: Preliminary Geotechnical Services, South 15e Street Residential Lots 6 & 7, Second Addition Adams Home Tracts; 6 pages (dated July 9, 2004) prepared by Icicle Creek Engineers. Zipper Zeman Associates, Inc. Geotechnical and Environmental Consulting A 1Cerrxon Company 14405 SE 36th Street #210, Bellevue, WA 98006 (425) 746 -1889 Fax (425) 746 -1296 Project Description McCarter Tukwila Properties Job No. 81065063 January 24, 2007 Page 2 The project site comprises two adjacent undeveloped residential lots located in the Foster/Thorndyke neighborhood of Tukwila, Washington. These combined lots form a parcel that is visually delineated by existing residences on the west and south, and by a greenbelt ravine on the north and east. The parcel has a roughly rectangular shape that measures about 240 feet by 310 feet overall and encompasses approximately 1.7 acres. Future development plans call for building a single- family house on the southern portion of each lot, while leaving the middle and northern portions undeveloped. Both new houses will be two -story wood -frame structures with daylight basements. Access driveways comprising a combination of asphaltic pavement and pervious pavers will enter the site at its southeastern corner. Review Comments The following paragraphs summarize our review comments regarding geotechnical items contained in the aforementioned plan set and supporting documents. As a convenience to the design team, we have underlined any statements that might require an addition or modification to the plan set, or might require special provisions during construction. It should be noted that our scope of work did not include a check of structural or civil calculations or other non- geotechnical issues, nor does our review purport to verify the accuracy of the plans. 1. Surface Conditions: Natural surface grades across the site form a fairly level bench along the southern side, and a deeply incised ravine on the middle and northern portions. This ravine is about 40 to 50 feet deep and has sideslope angles ranging from about 2.OH:1V to 1 .5 H:1 V (horizontal:vertical). 2. Subsurface Conditions: According to the geotechnical report, the subject lot is underlain by medium dense to very dense, interlayered, sands with varying amounts of silt and gravel, extending to a depth of about 40 feet or more. These soils were interpreted to be some combination of native glacial till and advance outwash. Groundwater was observed at a depth of about 35 feet. 3. Slope Setbacks: Because the subject lots sit near a ravine sideslope of significant height and steepness, the geotechnical report recommended that both houses maintain a foundation setback of at least 20 feet from the sideslope. Civil sheet C1.0 indicates that a setback distance of about 22 feet or more is provided for both houses, when measured horizontally from any 'foundation surface to the nearest sideslope face (accounting for footing embedment). In our opinion, the indicated setbacks are adequate from a geotechnical perspective. if actual setback distances measured at the time of construction are found to be somewhat less than 20 feel. the affected portion(s) of footing should be deepened as necessary to provide a sufficient setback. Gcotcchnical Plan Review ZZA McCarter Tukwila Properties 7 lob No. 81065063 January 24, 2007 Page 3 4. Foundations: According to the architectural and structural plans supplied to us, the house foundations consist of spread footings that extend at least 18 inches below finished grade and impose a soil bearing pressure of 1500 psf. These design details comply with the geotechnical report, which assumed all footings will bear on dense native soil or compacted structural fill. 5. Retaining Walls: According to the architectural plans, backfilled retaining walls will be used around the house basements, and equivalent fluid pressures of both 35 and 40 pcf have been calculated for all wall designs. In our opinion, a design value of 35 pcf is adequate if the walls are unrestrained (allowed to yield slightly) during the backfilling operation. A gravel curtain drain and a perforated -pipe heel drain are shown behind all retaining walls, and we concur with these drainage details. 6. Drainage and Runoff: The architectural plans indicate that perforated drainpipes will be installed around the exterior foundation walls to collect groundwater, and the civil plans indicate that separate tightline drainpipes will be installed to collect roof - runoff water. All water sources will then be routed down to the ravine invert via a 6- inch - diameter tightline outfall pipe, which discharges onto a gabion -type energy dissipater blanket. This outfall pipe will be anchored to the slope with soil staples installed at 10 -foot intervals. The various drainage and discharge details comply with our geotechnical recommendations. Summary In conclusion, the geotechnical aspects of the plan sheets that we reviewed have been prepared in general accordance with the geotechnical report and with our subsequent verbal recommendations, as well as with conventionally accepted geotechnical criteria. It is therefore our opinion that the geotechnical aspects of the proposed project can be successfully accomplished if proper construction methods are used and if all appropriate geotechnical recommendations are followed. Geutechnicatl Plan Review • PBS September 8, 2005 Mr. Michael McCarter 3033 NW 70th St. Seattle, WA 98117 • RECEIVED 01 COMMUNITY DEVELOPMENT RE: Property off S 150th St., Tukwila, WA - Critical Areas Review Dear Mr. McCarter: The purpose of this letter is to summarize PBS Engineering and Environmental's (PBS) findings regarding a requested wetland reconnaissance at the above - mentioned property. The reconnaissance was requested as part of a planning process for development of the property. On August 27, 2005 I walked the property to get a general idea of the probable extent of City of Tukwila jurisdictional wetlands on the property, and to identify any other potential environmental limits to development. The property is located within the city limits of Tukwila, WA and is comprised of two parcels (004200 -0147 & 004200 - 0148), each about an acre in size (Figures 1 and 2). It is located at the upper edge of an east facing bluff above the Duwamish floodplain. A small ravine starts near the western property boundary and cuts east across the middle of the site. The bottom of the ravine is relatively narrow where it forms on the western side of the property, but broadens near the eastern side. Slopes on either side of the ravine are quite steep. Elevations range from a high of 259 feet in the southwest corner to 185 feet along the middle of the eastern boundary. Currently the only structure on the property is a treehouse. The southern 1/4 of the property is cleared and largely dominated by grasses and Himalayan blackberry (Rubus discolor). The rest of the property is forested with an overstory of big leaf maple (Acer macrophyllum), with a few red cedar (Thuja plicata) and alder (Alnus rubra). No wetlands or other sensitive areas are mapped on the subject property in the King County inventory. However I identified a riparian wetland/ watercourse at the bottom of the ravine. The site visit occurred in August after a prolonged dry spell. The soils in the upper portion of the ravine were still moist and exhibited hydric soil characteristics. Vegetation in this area was dominated by non - native weed species including Japanese knotweed and morning glory. The lower portion of the wetland area near the eastern PORTLAND SEATTLE VANCOUVER EUGENE BEND TRI-CITIES property boundary was considerably wetter with water flowing through a narrow channel for a short distance and then flowing into a wetland area with soils saturated to the surface. Skunk cabbage (Lysichiton americanum) was present in this area, as well as salmonberry (Rubus spectabilis), Equisetum sp., lady fern and a variety of weed species. The waters /wetlands on the site are subject to federal, state and City of Tukwila regulations. Tukwila will likely classify the wetland/stream on the property as either a Type 3 wetland or a Type 4 watercourse. Both have 50 -foot buffers and an additional 10- foot building setback. Figure 3 shows the site development plan for the property, the approximate extent of waters /wetlands on the property and the approximate buffer extent. The planned development as shown in Figure 3 successfully avoids impacts to waters /wetlands or their buffers. Any changes to the existing plan that result in impacts to waters /wetlands will require permitting at the federal, state and local level. Please let us know if you have any questions or require further assistance. Thank y Katharine M. Lee Senior Project Manager 2 • Figure 1. Property Location 3 • Figure 2. Aerial Photo Showing Property Boundaries 4 Fi2ure 3. McCarter Property Site Development Plan • • Michael McCarter 3033 NW 70th Street Seattle, Washington 98117 ICICLE CREEK ENGINEERS Geotechnical, Geologic and Environmental Services July 9, 2004 RECEIVED JJUN 01 7 7 COMMUNITY DEVELOPI NT Letter Report Preliminary Services South 150th Street Residential Lots 6 & 7 Second Addition Adams Home Tracts 48xx South 150th Street Tukwila, Washington ICE File No. 0506 -001 INTRODUCTION Icicle Creek Engineers '(ICE) is pleased to submit this letter report summarizing our preliminary geotechnical engineering services for two residential lots located in the 4800 block of South 150t Street in Tukwila, Washington. The attached Vicinity Map, Figure 1, shows the approximate location of the project site. Our services were completed in general accordance with our Updated Proposal dated May 12, 2004, and were authorized by Michael McCarter on May 14, 2004. PROJECT DESCRIPTION According to a boundary and topographic survey map provided to ICE by Schroeter Land Surveying, the subject site is a roughly rectangular parcel that measures about 240 feet by 310 feet overall and encompasses approximately 1.7 acres. This parcel comprises .two lots (identified as tax lot numbers 4200- 0148 -03 and 4200- 0147 -04) intended for development as single - family residences. However, because the parcel spans a "steep slope area" as defined by the City of Tukwila, a preliminary geotechnical evaluation is desired to establish appropriate general design requirements and constraints on each lot. The attached Site and Exploration Plan, Figure 2, shows the site boundaries. SCOPE OF SERVICES Our scope of services for this preliminary phase of the project involved a geotechnical analysis of local stability conditions on the subject site, and a feasibility study concerning future development. Specifically, our -scope included the following items: • Review, geological maps and City of Tukwila zoning maps pertaining to the site • • Complete a geologic reconnaissance of the property to evaluate surface conditions. • Advance one boring to a'depth of about 40 feet near the boundary line between the two lots, close to the brink of the ravine. This boring was advanced with a hollow -stem auger using a.truck- mounted drill rig operated by an independent drilling firm working under subcontract to ICE. 20 NE Juniper Street, Suite 101 • Issaquah, WA 98027 - 2519 • www.iciclecreekengineers:com • (425) 427 -8187 phone • (425) 427 -6629 fax Michael McCarter July 9, 2004 Page 2 • Perform SPT sampling and testing at 5 -foot depth intervals within the borehole, and collect soil samples for further laboratory observation. • Classify the soils encountered in the boring and prepare a detailed log of subsurface conditions. • Analyze stability conditions on the ravine sideslope and interpret a safety factor with respect to the risk of future landsliding. • Assess other geotechnical risks for the site, if any, based on our knowledge of soil and ground water conditions. • Develop preliminary conclusions regarding the geotechnical feasibility of developing the site with two single - family residences, and provide preliminary recommendations regarding appropriate setbacks from the brink of the ravine, suitable foundation types, and other general design issues. • Develop recommendations for additional geotechnical studies on the site, if warranted. SITE CONDITIONS GENERAL An ICE representative visited the project site on June 14, 2004 to evaluate surface and subsurface conditions. The following text sections describe our observations, findings, measurements, and interpretations regarding site conditions. Figure 2 illustrates the major existing site features. SURFACE CONDITIONS The subject parcel is presently vacant and undeveloped. Single - family residences occupy the adjacent properties. Surface grades across the southernmost portion of the parcel are fairly flat, with a gentle slope downward to the east. In contrast, the central and northern portions of the parcel consist of a deep (about 40 to 50 feet) ravine that plunges toward the east. This ravine has sideslope angles on the order of 1.5H:1V to 2.0H:1 V (horizontal:vertical). Vegetation varies considerably across the parcel. The southeastern part is covered by low grasses, the southwestern part is covered by berry vines, and the remainder (occupied by the ravine) supports a moderately dense growth of mature maple and cedar trees. Most of these trees exhibit straight trunks, but a few show the bowing that is a common indicator of soil creep. The ravine sideslopes have a light to moderate groundcover, whereas the ravine invert area is densely vegetated with hydrophilic plants. We did not observe any evidence of severe erosion, active earthsliding, or other large -scale instability on the ravine sideslopes at the time of our visit. However, there is a clearly defined bench that begins near the site's eastern boundary and extends downward across the ravine sideslope for about 50 linear feet. A footpath has been established on this bench as a convenient means to cross the ravine. Although the bench could have been cut in to accommodate the footpath, it appears more likely that the bench represents the top of an old slump block. Judging by the vegetation in this area, the inferred slump probably occurred at least several decades ago. SUBSURFACE CONDITIONS According to the Preliminary Geologic Map of Seattle and Vicinity, Washington prepared by Waldron and others (United States Geological Survey Map I -354, dated 1962), the project site is underlain by Vashon Till, which they describe as a "compact, concrete -like mixture of silt, sand, gravel, and clay" that has been deposited and overridden by continental glacier ice. They also indicate that the thicknesses of this particular glacial till deposit are generally less than 50 feet but can exceed 150 feet. Icicle Creek Engineers 0506001/070904 Michael McCarter Jury 9, 2004 Page 3 As previously mentioned, we explored subsurface site conditions by means of one boring advanced to a depth of about 40 feet below surface grade. Our boring was located near the boundary line between the two individual lots and approximately 10 feet behind the brink of the ravine slope, as shown on Figure 2. A geotechnical engineer from our firm continuously monitored the boring, classified the soil samples, observed the ground water conditions, and prepared a detailed log. All soil samples were classified in general accordance with the system described on Figure 4. Our boring log is presented as Figure 5. Our exploratory boring revealed alternating layers of silty sands and slightly cleaner sands extending downward to near the ravine invert elevation. These observed soils were generally consistent with the stratigraphy shown on the aforementioned geologic map. The attached Geologic Cross - Section, Figure 3, illustrates our interpretation of subsurface conditions across the southern half of the site. Specifically, our boring encountered about 15 feet of medium dense to dense, silty sand with gravel, overlying about 5 feet of dense sand with silt and gravel, in turn overlying about 5 feet of very dense, silty sand with gravel. We interpret all of these strata to represent textural variations within a glacial till deposit. From a depth of about 25 feet below grade to our boring termination depth of about 40 feet, we observed dense to very dense, fine to medium sand with silt. We infer that this latter soil is either an additional layer of the same glacial till deposit or an advance outwash deposit. At the time of drilling, our boring disclosed ground water about 35 feet below surface grades. This depth corresponds with the lower sand layer (either glacial till or advance outwash) and is about 15 feet higher than the nearby ravine invert. Because our boring was performed between the typical wet and dry seasons for the Puget Sound region, we infer that the observed ground water depth represents an intermediate level between the yearly high and low levels. SLOPE STABILITY ANALYSIS ANALYTICAL PROCEDURE We began our stability analysis by developing a surface cross - section through the ravine and the proposed building areas to the south, based on the topographic survey map supplied to us. Next, we interpreted the subsurface stratigraphy, based on our exploratory boring, and then inferred appropriate soil properties, based on correlation charts. Table 1 summarizes our inferred soil values for the four main stratigraphic layers revealed by our boring. TABLE 1 ESTIMATED PROPERTIES OF ON -SITE SOILS FOR STABILITY ANALYSIS Soil Layer Density (pcfl Cohesion (psi) Internal Friction Angle (degrees) 1: Medium dense to dense, silty SAND with gravel 125 0 32 2: Dense SAND with silt & gravel 130 0 34 3: Very dense, silty SAND with gravel 135 0 36 4: Dense to very dense SAND with silt 130 0 36 Note: pcf = pounds per cubic foot; psf = pounds per square foot. Icicle Creek Engineers 0506001/070904 Michael McCarter July 9, 2004 Page 4 To model the foundation load applied by future houses, we applied a vertical force of 2,000 pounds per linear foot (plf) acting at a depth of about 2 feet, where suitable bearing soils were encountered in our borings. We analyzed the existing slope using a piezometric depth of 35 feet, which would simulate an average ground water level as was encountered in our on -site boring. Our analysis also included a piezometric depth of 25 feet, which would simulate a greatly elevated ground water level. Although this magnitude of ground water rise is probably unrealistic, it does serve to illustrate the effect of temporary peaks in the ground water table during the wet season. ANALYTICAL RESULTS A safety factor is defined as the ratio of the sum of all forces or moments resisting slope movement versus the sum of all forces or moments tending to cause slope movement. Consequently, a slope that possesses a safety factor of 1.00 is on the verge of sliding, whereas a slope with a safety factor greater than 1.0 has some resistance to sliding. According to standard geotechnical engineering practice, a static safety factor of 1.50 is considered the desirable minimum value for most slopes. Lower safety factors in the range of 1.05 to 1.25 are typically accepted for various temporary or transient conditions. Based on the aforementioned values of internal friction angle, cohesion, density, foundation load, and piezometric elevation, we utilized the conventional method of slices to calculate safety factors associated with five different landslide scenarios. These scenarios were intended to assess possible setback conditions for future development. Our landslide scenarios and associated safety factors are presented below. Landslide Scenario 1. Small slide originating 10 feet behind top of slope 2. Medium slide originating 20 feet behind top of slope 3. Medium slide originating 22 feet behind top of slope (undercutting foundation) 4. Large slide originating 22 feet behind top of slope (undercutting foundation) with normal ground water level 5. Large slide originating 22 feet behind top of slope (undercutting foundation) with elevated ground water level Safety Factor 1.19 1.70 1.51 1.68 1.46 Our results indicate that the most likely failure would involve a relatively shallow slide occurring at or near the top of the ravine slope; deep slides are less likely to occur, even under conditions of elevated ground water levels. This result is typical for granular soils, such as those observed below the site, because they generally gain shear strength and density with depth. In fact, minimum safety factors for granular soils are usually associated with surficial raveling on a slope face. Our analytical results also indicate that a foundation setback distance of 20 from the top of the ravine slope would provide an adequate safety factor for future houses. Specifically, we obtained a safety factor of 1.51 based on a shallow spread footing applying a load of 1,500 plf at a setback distance of 20 feet. Even under the condition of a highly elevated ground water level, which would likely not occur for more than very short periods of time, we derived a safety factor of 1.46; this calculated value Icicle Creek Engineers 0506001/070904 Michael McCarter July 9, 2004 Page 5 nearly satisfies the minimum value (1.50) desired for long -term conditions, and it exceeds the minimum values (1.10 to 1.25) typically accepted for temporary conditions. CONCLUSIONS AND RECOMMENDATIONS Based on our analytical results described above, we generally conclude that the proposed development of two single - family residences at the site is feasible from a geotechnical standpoint. The following paragraphs present our specific conclusions and recommendations concerning future site development. • Slope Stability: We conclude that the existing ravine sideslopes are reasonably stable and not in imminent danger of a stability failure. However, the steepness of the sideslopes and the possible presence of an old slump failure indicate that appropriate precautions should be applied to any future development. These would include slope setbacks and conservative bearing pressures for new foundations, as discussed in more detail below. • Other Risks: Aside from slope stability considerations, the most likely geotechnical risk probably involves soil erosion on the ravine sideslopes. As such, the future development should include provisions for slope protection, as discussed below. Liquefaction of the on -site soils does not present a significant risk, in our opinion; the combination of high density, moderately high silt content, and fairly low ground water table makes these soils relatively resistant to liquefying in an earthquake. • Foundation Loads: In our opinion, the subsurface soils are suitably dense to support the future houses on conventional spread footings. We recommend using an allowable static bearing capacity of 1,500 pounds per linear foot for continuous strip (wall) footings and 1,500 pounds per square foot for isolated pad (column) footings. • Primary Foundation Setbacks: Given the aforementioned bearing capacities, we recommend that all foundation elements for the main house structure be set back at least 20 feet behind the top of the ravine slope. Figure 2 illustrates our interpretation of the top -of -slope line, based on the topographic survey map. Therefore, all wall and column footings should be set back at least 20 feet south of the indicated line. It might be useful to have the top -of -slope line and 20- foot- setback line staked in the field before construction begins. • Ancillary Foundation Setbacks: Aside from the primary foundation elements discussed above, we anticipate that some additional foundation elements might be needed to support decks, canopies, or other ancillary structures. In our opinion, it would be feasible to place these elements within the 20- foot setback zone if their loads are transferred to deeper soils. Specifically, we recommend that these deeper foundations consist of needle piles, drilled piers, augercast piles, or some other suitable type. Regardless of type, we also recommend that all piles /piers extend downward below the ground surface a distance equal to (or exceeding) the horizontal encroachment distance. For example, a deck foundation installed 12 feet inside the setback line (or 8 feet from the top -of -slope line) should extend at least 12 feet deep. • Slope Protection: Runoff water from house roofs, decks, patios, drains, and other sources should not be allowed to concentrate and flow over the ravine sideslopes, due to the risk of severe soil Icicle Creek Engineers 0506001/070904 Michael McCarter July 9, 2004 Page 6 erosion. Instead, all such water should be collected in tightline pipes and routed to a municipal storm drain or other appropriate location. We also recommend that existing trees and other vegetation on the sideslopes not be disturbed, because they are currently providing some surficial stabilization benefits. Additionally, a hardy groundcover could be established on any barren portions of the sideslopes to help minimize future erosion. * * * * * * * * * * * * * * * * * * ** We trust this geotechnical letter report meets your present needs. Please call if you have any questions or need additional information. Document ID: 0506001. So150thStProperty.analysis.letter Two copies submitted Attachments Yours very truly, Icicle Creek Engineers, In James M. Brisbine, P.E. Principal Engineer Icicle Creek Engineers 0506001/070904 File No. 0506 -001 S. 150th Street Short let; Ywoln ,A411010k irr �. rill InamiL. ;,..4.,4,--tatex. L itreass mi Ceti , or", Flgtl 13" A, Alma., ru am 17� +��.�•xfer��c w r.:i:.ra• . r•' -'• . viU LW vl -- ►vin a 1 .01,sonsm Waaj17 411.47,1WW14351/9 71) Mt"J kit,. -° ��ar 710A2: �� i 1141,_ 2eRgo, mu \At7kV 4: a i Ridge 14) fig 000 FEET 0 500 �•_ 1000 METERS Printed Rom TOPO! 02000 National Geographic Holdinpe (www.topo.com) Icicle Creek Engineers Vicinity Map - Figure 1 ICE File #0506 -001 (S. 150th Street Property) SOURCE: SURVEY MAP BY SCHROETER LAND SURVEYING (dated 6/7/2004) r 0 APPROXIMATE TOP OF ▪ STEEP SLOPE a PROPERTY LINE o • o • o • ® • o • o e e e e • e • o • e • e • e e o • e • o.eeovo.e.oe 9 11 0 • 240 a a 230 0 0 APPROXIMATE a TOP OF STEEP SLOP - o° o° ° Icicle Creek Engineers 0 N e. e a e. 10 ▪ e e • n° Lot 6 otk7 o o. o. o. e. o. e v o. o. 0 Z 30 60 Scale in Feet EXPLANATION -1 ® Boring Location .0= 250 Geologic Cross - Section Limits Contour Line and Elevation in Feet Site and Exploration Plan - Figure 2 ICE File #0506 -001 (S. 150th Street Property) JMB 6/22/04) Geologic Cross - Section - Figure 3 A (SOUTH) 260 240 1 PROPERTY LINE • B -1 EXISTING EXPLANATION B -1 TOP OF STEEP SLOPE 1 W 220 --- z 1 0 1 J 200 _ • w 1 1 180 Medium dense to dense silty SAND with gravel (Glacial Till) Dense SAND with silt & gravel Vlacial Till) Very dense silty SAND with gravel4Glacial Till Dense to very dense SAND with silt (Glacial Till or Advance Outwash) Boring Number and Location Inferred Soil Contact Ground Water Level at Time of Drilling ?• ? ?— GROUND SURFACE INFERRED G • ? . • ROUND • WATER SURFACE ? 1 160 1 1 1 1 1 I- 1 0 20 40 60 80 100 120 HORIZONTAL DISTANCE (FEET) A' (NORTH) RAVINE INVERT 260 240 220 200 180 1 l I 160 140 160 180 200 ELEVATION (FEET) CLIENT Michael McCarter PROJECT NUMBER 0506 -001 PROJECT NAME Preliminary Geotechnical Engineering Services PROJECT LOCATION S 150th St, 4800 Block, Tukwila, WA. KEY - LOGS/WELLS 0506.001.GPJ ICE.GDT 6/30/04 UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS SYMBOLS TYPICAL DESCRIPTIONS COARSE GRAINED SOILS MORE THAN 50% OF MATERIAL IS LARGER THAN NO. 200 SIEVE SIZE MORE THAN 50% OF COARSE FRACTION RETAINED ON NO 4 SIEVE CLEAN GRAVELS (LITTLE OR NO FINES) u ,-, a /� o D. Gw WELL - GRADED GRAVELS, GRAVEL - SAND MIXTURES, UTILE LE OR NO FINES • GP POORLY GRADED GRAVELS, GRAVEL - SAND MIXTURES, UTILE OR NO FINES GRAVELS WITH FINES (APPRECIABLE AMOUNT OF FINES) No. 4 (4.78 mm) to No. 200 GM SILTY GRAVELS, GRAVEL • SAND -SILT MIXTURES ?4 GC CLAYEY GRAVELS. GRAVEL - SAND - CLAY MIXTURES MORE THAN 50% OF COARSE FRACTION PASSING NO. 4 SIEVE CLEAN SANDS (LITTLE OR NO FINES) a SW WELL- GRADED SANDS, UT LE OR NO FINES :.•.•...f.. . $P POORLY GRADED SANDS, LITTLE OR NO FINES SANDS WITH FINES (APPRECIABLE AMOUNT OF FINES) z.. 4. $M SILTY SANDS, SAND - SILT MXTURES /�/ / • SC CLAYEY SANDS, SAND- CLAY MIXTURES FINE GRAINED SOILS SILTS AND LIQUID LIMIT LESS CLAYS THAN 50 — - — — - ML INORGANIC SILTS AND VERY FINE SANDS. ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY CL INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY Y CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN I 1 I OL ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY MORE THAN 50% OF MATERIAL IS SMALLER THAN NO. 200 SIEVE SIZE SILTS AND LIQUID LIMIT CLAYS GREATER THAN 50 MH INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE SANDY OR SILTY SOILS, ELASTIC SILTS 7 CH INORGANIC CLAYS OF HIGH PLASTICITY OK ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS HIGHLY ORGANIC SOILS PT PEAT HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS • NOTESI)Dual symbols are used to indicate gravels or sand with 5- 2% tines and souls with fines classlfymg as CL -M 2)) Symbols separated by a dash indicate borderline soil classifications. 3 The lines separating soil types on the logs represents approximate boundaries only. The actual boundaries may vary or be gradual. 4 Soil Classification based on visual classification of soil is based on ASTM 02488 -90. 5 Soil Classification using laboratory tests is based on ASTM D2487 -90. 6 Description of soil density or consistency is based on interpretation of blow count data and/or test data. Sampler and Symbol Descriptions • Location of relatively undisturbed sample 8 Location of disturbed sample D Location of sample with no recovery Blows required to drive a 2.4 inch I.D. split - barrel sampler 12- inches or other indicated distance using a 300 -pound hammer falling 30 inches 0 Location of sample obtained in general accordance with Standard Penetration Test (ASTM D -1586) procedures. m Location of SPT sampling attempt with no recovery Blows required to drive a 1.5 inch I.D. split - barrel sampler (Standard Penetration Test) 12- inches or other indicated distance using a 140 -pound hammer falling 30 inches Pia Location of Pushed Sample G® Location of Grab Sample Sampler pushed with the weight of the hammer or against weight of the drilling rig Sample obtained from drill cuttings Approximate depth of perched water or ground water Soil Particle Size Definitions Component Size Range Boulders Coarser than 12 inch Cobbles 3 inch to 12 inch Gravel 3 inch to No. 4 (4.78 mm) Coarse 3 inch to 3/4 inch Fine 3/4 inch to No. 4 (4.78 mm) Sand No. 4 (4.78 mm) to No. 200 Loose (0.074mm) Coarse No. 4 (4.78 mm) to No. 10 Medium dense (2.0 mm) Medium No. 10 (2.0 mm) to No. 40 Dense (0.42 mm) Fine No. 40 (0.42 mm) to No. 200 Very dense (0.074 mm) Silt and Clay Finer than No. 200 (0.074 mm) Moisture Content • Dry Moist Wet Absence of moisture Damp but no visible water Visible water Relative Density or Consistency Coarse - Gralned Solis Fine - Grained Soils Relative Density N, SPT Relative N, SPT Blows / ft Consistency Blows / ft Very loose 0 - 4 Very soft < 2 Loose 4 - 10 Soft 2 - 4 Medium dense 10 - 30 Medium stiff 4 - 8 Dense 30 - 50 Stiff 8 - 16 Very dense Over 50 Very stiff 16 - 32 Hard Over 32 ICICLE CREEK ENGINEERS Explanation For Boring Logs - Figure 4 1 ' Boring B -1 PAGE OF CLIENT Michael McCarter PROJECT NAME Preliminary Geotechnical Engineering Services PROJECT NUMBER 0506 -001 PROJECT LOCATION S 150th St, 4800 Block, Tukwila, WA. DATE STARTED 6/14/04. COMPLETED 6/14/04 GROUND ELEVATION 240 ft HOLE SIZE 10- inches DRILLING CONTRACTOR Geo-Tech Explorations, Inc. WATER LEVEL 35.0 ft / Elev 205.0 ft 1 DRILLING METHOD Hollow -Stem Auger TOTAL DEPTH 41.4 ft DRILLING EQUIPMENT Mobile B-61 Truck- Mounted LOGGED BY JMB CHECKED BY SAMPLING METHOD SPT -1401b hammer/ rope & cathead/ 30 -inch drop NOTES Vacant Lot with tall grasses DEPTH (ft) MATERIAL DESCRIPTION U_ x Q O 0 GROUP SYMBOL BLOW COUNTS (N VALUE) SAMPLE TYPE NUMBER • SPT N VALUE • 20 40 60 80 ILAB TESTS REMARKS • Moisture Content ( %) • 20 40 60 80 - - - 5 Brown -gray silty fine to medium SAND with gravel (dense, moist) (weathered glacial till) grades to very dense (unweathered glacial till) 15.0 225.0 = ,= — -a — e- - -6.- --- - i o- --f, - -n a - "-? SM • • Blow counts understated at ground water surface 37 ' 1 • _ - _ 10 67 ' 2 • - - - 15 - - _ 20 Gray fine to medium SAND with silt and gravel (dense, moist) (glacial till) 20.0 220.0... : a SP- SM 43 3 • - _ 25 Gray silty fine to medium SAND with gravel (very dense, moist) (glacial till) 25.0 215.0- - -� �- - e _ - — r SM 89 4 • - - 30 Gray fine to medium SAND with trace silt (dense, moist) (glacial till/ advance outwash ?) `O 1 grades to wet grades to very dense 198 6:. :::: :.' . :' ?'° y.. :' :° . :::o� y d c SP- SM 48 5 • 33 6 • _ _ 35 *24 ' 7 • - ' u7 - - 40 50/5" ' 8 3 -41.4 P, o 3 L Boring completed at 41.4 feet. on 6/14/2004 ICICLE CREEK ENGINEERS Boring Log - Figure 5 VICINITY MAP NOT TO SCALE PROJECT LOCATION: 48XX SOUTH 150TH" STREET . - TUKWILA, WA PARCEL #004 -200 -0147 (LOT 6) PARCEL 8004- 200 -0148 (LOT 7) - OWNER: MICHAEL M7cCARTER STREET 303.3 NW SEATTLE WA. 98117 ARCHITECT: 'ALAN MASCORD DESIGN ASSOCIATES, INC. 1305 NW 18th AVE, PORTLAND. OR 97209 CONTACTS: ALAN . MASCORD (503) 225 -9161 CIVIL ENGINEER: LAYTON & saL INC., P-S- 12515- WILLOWS RD NE, SUITE 205 KIRKLAND, WA 98034 . CONTACT: GWENDOLYN M. (WENDY) McHUGH (425) 825-1735 .. SURVEYOR: SO MMETER LAND SURVEYING. PL$ P.O. BOX 813 SEAHURST, WASHINGTON 98062 CONTACT: RICHARD . SCHROETER (206) 242 -6621 GEOTECHNICAL: ZIPPER ZEMAN ASSOCIATES. INC. 14405 SE 36TH STREET, SUITE 210 BELLEVUE WA CONTACT: JAMES M. (JIM) BRISBINE P.E. (425).746 -1889 ENVIRONMENTAL: PBS ENGINEDING & ENVIRONMENTAL 130 NICKERSON ST SEATTLE WA 98109 CONTACT: KATHARINE 14: LEE (206).233 -9639 LEGAL DESCRIPTION: TAX LOT 0042000147; THE EASTERLY 20 FEET OF THE SOUTH HALF OF TRACT 5.AND TRACT 6, EXCEPT THE WESTERLY 20 FEET OF THE NORTH HALF OF SAID TRACT 6, BLOCK . 2, ADAMS HOME TRACTS 2ND ADDITION, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 12, PAGE 50, IN KING COUNTY, WASHINGTON; (ALSO KNOWN AS A PORTION- OF PACEL B OF TUKWILA' BOUNDARY UNE ADJUSTMENT 890 -9, • RECORDED' UNDER KING COUNTY RECORDING NO.9012050391). TOGETHER WITH AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES RECORDED UNDER KING COUNTY RECORDING N0. 8908181381; TOGETHER WITH AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER THE SOUTH 25 FEET OF TRACT 7, BLOCK 2, ADAMS HOME TRACTS 2ND ADDITION, ACCORDING TO. THE PLAT THEREOF RECORDED IN VOLUME 12, PAGE 50, IN KING COUNTY, WASHINGTON. TAX LOT 0042000148; TRACT 7, BLOCK 2, ADAMS HOME TRACTS 2ND ADDITION, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 12, PAGE 50, IN KING COUNTY, WASHINGTON, (ALSO KNOWN AS A PORTION OF PARCEL B OF TUKWILA BOUNDARY UNE ADJUSTMENT 890 -9, RECORDED UNDER KING COUNTY RECORDING P40.9012050391). .TOGETHER WITH AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES RECORDED UNDER KING COUNTY RECORDING NO. 8908181381; SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER THE SOUTH 25 FEET OF, TRACT 7; BLOCK 2, ADAMS HOME TRACTS 2ND ADDITION, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 12, PAGE 50, IN KING COUNTY, WASHINGTON. SCOPE OF WORK: THE PURPOSE OF THIS PROJECT IS CONSTRUCT. TWO NEW SINGLE - FAMILY RESIDENCES. THE EXISTING SHARED GRAVEL ACCESS DRIVEWAY 15 PROPOSED• TO BE PAVED IN CONJUNCTION .WITH THIS PROJECT. ADDITIONAL SITE IMPROVEMENTS INCLUDE NEW .DRIVEWAYS, WALKWAYS, AND LANDSCAPING. 1 ` \ � \, \\ 1 1 1 )„,\ o ' SE( I \II i 0'N\ \ \I \S804326.2) 49jj��{.10 \/)" \310.785101 I :, / / / Jr7,,s!, /a/ \ � � '1 I ` � \ \\� 'R.4J7D 2240 se 2' u ) - \■ N I N. 1 • . 1 r J //-77-;)/12> � � f// / i) l ) / y// / t\ VI / n r / / /�j �/ // /.. ? f 1, -- \ �. J ( / ( RETAINING WAIL \ \ m I HISS I ( r I br / / �/' %1 �!/�// 5 j 11 ( 1 /I 1 / / / // �— *�_ / / )i JIIP //I// / / / / /may � F, 17 91 . I /j,' > °/I I I 1 ry 1 / l /mil) ( r I I I I ),I L l "Ill )) 1,'' —J /lJr 4� Z6. 2'. \ 431.32:921/- y":92 �/' �. t z //? i .Yd) FI N \� LEGEND: _ SEE CONTINUATION THIS SHEET 1 N �/: } r -\1 1 o OCK ALL 1111 IPE 1 1 I\ (�14III,'OC`'1‘)T � AP�ROX. ' II 1 . 1 �EI�NEA� \ I I < cH �ASIPI , EX OUTLET, / ( , (NON RO / ZZ I � ,�t no (<, ti( x. 3 1 ;1: n • EXISTING CONTOURS /� / I 1 � 1,2 ASPHALT PAVEMENT I � I I ( I .` \ C✓OT'8 PERVIOUS PAVERS x y -�° •I I \.i —' l .y �; I I /•LI 1 GRASSCRETE SURFACE ) / l / 11 /!(/Iii /pis ^ %�, ( l� 1i1//////� iii / /i..^ ►�i // /// /�� / / 1) 1 \\ /,/ /kil/ / _ \\ �� - -�- - • l> l71/"////if fi cam / / /// / ��� -- \\ \4 —� j./ / / (( I ) / � �. � ` .�_� � .,� � .� � � \EX FtDWId� TYP — �/ Z, / /' / (f ((p /// // - / �./ I / // . / /. /l . \ 2� \ 3Y • / ✓ /7 j�/ /-( ./-7 ' .\ ` -C`1MRONM TYtl�5�07 - \",TT' �\ I ^ \ II / / / //� 11/)11 \ Z — ql) li A. / //� / / / \ \\ •\ .-� 'BD. 10'1\ 11V 11; // / ( ___.-_--z_-2,,, _ _ / ;,°.: • 200 �1f \\ \\ o IA ° I I I\I _ _- —� °e.>r - — ADIIK�.WAW -T7�._ �} +78.60 \ \ �0 �� '/� \ _ \ f_ i • z I I I �A 1 F , -q- yl,.(..\ r --- --. <� —�' \O ` \ \ \ 1 \ \ Fjl' E E AS , \ t \ 'N . - • 3 i 210 1/ QX FL�WUNE NEIL ON �l RFJICH (LO�ATK)N AJ 'R01d) ljl)- 1 s 1111, 1. III 0) Ills III /I / / _ \ —i 2, �`• • .. • 01 , Wit'' •tom, \\ \ \ "� • — - — 613:14.- - -2 9'x155' \ �} /. - '• _ +70.16 36.0' JU(((JU ?o. \ J \ r / A /% I FFENCE IS 3' . J .) C ) 1 ABBREVIATION KEY:. A/C - ASPHALTIC CCIGCRETE AC - AIR CONDITIONER AP - APPLE TREE • BLDG - - BUILDING 8M - BENCH MARK 1 BTM - BOTTOM . C - CEDAR CB - CATCH BASIN p - CAST IRON • CL - CENTER UNE . CO - CLEAN OUT .CONC - CONCRETE Col - CRY OF 11) CW - CONCRETE W. 080 - DESIGN BY INNERS DEMO - DEMOLISH DI - DUCTILE IRON . . DOM - DOMESTIC DS - DOWNSPOUT - DWT - DRIVEWAY EIS - ELECTRICAL JUNCTION BOX ELEC - ELECTRICAL ELEV - ELEVATION • • EOP - EDGE OF PAVEMENT ESMT EX F FA FD .FH FT • • G CV GM GUY H • NB • NO IE IV INV LT LL .LS M MH MON X88.054 EX 6' CHAIN17.7 \ LINK FENCE - A EX 6•. \ 6C/ r WOOD IN 1 v� \� ��ti % f � 'E 0 0 ID �, l�MINIM EASEMENT EXISTING FIR FIELD ADJUST FLOOR. DRAIN FINISH FLOOR FIRE 'HYDRANT FEET GAS PIPE GATE VALVE GAS METER GUY ANCHOR HEMLOCK HOSE BIBB ' HOLLY TREE INVERT ELEVATION .IRRIGATION CONTROL VALVE INVERT UNEAL FEET LOWER LEVEL LANDSCAPING MAPLE TREE MANNOLE MONUMENT 1411 MON OH • OHP P. PA • . PERF PM • PROP . PVC PVMT RD 5 SAN SD SPIT SL S0 SS SSMH SSS ST MANHOLE MONUMENT OVERHEAD POWER OVERHEAD POWER POWER PLANTER AREA PERFORATED POWER METER PROPERTY POLYVINYLCHLORIDE PAVEMENT ROOF .DRAIN SEWER SLOPE SANITARY STORM DRAIN SHEET STREET LIGHT SOUARE FEET SANTTARY SEWER SANITARY SEWER MANHOLE SANITARY SIDE, SEWER STATION 111M11111111111NRAIIIIIIIIIIM. 111111*. 4 +8.53 =5+ \ 3 +1,7.20=4 00 EX BLDG 1 ;14816 1 EXII(GRAVEL 1 DRIVEWAY TB THRUST BLOCK TBM TEDAPORARY BENCH MARK T/C TELEPHONE/CABLE TEMP TEMPORARY TEL TELEPHONE TESC TEMPORARY EROSION/ SEDIMENTATION CONTROL TH - TEST HOLE TR - TELEPHONE RISER TYP -� UL - UPPER LEVEL . UTP - UTRJTY POLE VB - VERTICAL BEND W - WATER WM - WATER METER WS - WATER SERVICE VA/ - WATER VALVE YD , - YARD DRAIN ) fj \1 \C 'EX ECOL1 c.BLOCK WC; /�. ,/. ` \ l 130' -�J EN1 FOR RESS ? < `-1 EXCAVATION QUANTITIES: CUT - 1,4 ('0 CU YDS (BANK) FILL - 100 CU YDS (BANK) PLAN NOTES: 1. THE EXISTING BOUNDARY, TOPOGRAPHIC AND UTILITY INFORMATIOP: SHOWN IS BASED ON. THE SURVEY PREPARED BY SCHROETER;LAND SURVEYING, PROJECT. NO 06252, DATED 10/11/200(, ADDITIONAL TOPOGRAPHIC DATA WAS ADDED BASED ON THE UDAR ::URVEY DATA PROVIDED. BY THE PUGET SOUND UDAR CONSORTIUM. 2. THE TOP, OF SLOPE LOCATION SHOWN IS BASED ON THE GEOTECHNICAL REPORT PREPARED BY ICICLE CREEK ENGINEERS, DATED 7/90004, FILE NO. ICE 0506 -001. \\ \ 3. THE WETLAND AND 1/ETLAND BUFFER SHOWN ARE BASED ON THE CRITICAL. AREAS REVIEW PREPARED BY PBS ENGINEERING •• AND ENVIR MENTAL, CATER 9/8/2005.. DATUM:; II \ N 5 , 11 SEE CONTINUATION THIS SHEET • • • • ELEVATION aATUM PER SEWER MANHOLE 820 -9. • ON SOUTH 1A8TH STREET. RIM ELEVATION - 277.7 FEET CONVERSIOI11 TO NAVD83 = +4.06 FEET RIM ELEVAI1`1N - 281,6 FEET NAVD88" SHEET IN�EX: C1.0 - SITES LAN C2.0 - DRAP'AGE PLAN Y C3.0 - GRRCrf4G PLAN AND SECTIONS CC, D0, EE & FF C3.1 - SHARED DRIVEWAY DRAINAGE 8 GRADING PLANS C4.0 - WATER, SEWER, POWER k COMMUNICATIONS PLAN C5.0 - TEMPORARY EROSION h SEDIMENTATION CONTROL PLAN C6.0 - SECTIONS AA, BB; GG, & HH AND ,DRAINAGE DETAILS C7.0 - NOTES & SPECIFICATIONS ' I EXPIRES: 08/30/08 PROJECT N0. 486 -01 REVISION NO. 1 SHEET N0. C1.0 OF 8 .I / / : ' . , / / LEGEND: /, r. TYPE 2 CATCH . BASIN w /SOLID . COVER •TYPE 1 CATCH BASIN w /FRAME & GRATE. TYPE 1 CATCH . BASIN w /SOLID COVER • ® 12•- SOUARE CATCH BASIN (9 so CLEANOLIT MID DOWNSPOUT f PIPE FLOW ARROW 6 STORM DRAIN PIPE 4. OR 6• STORM DRAM PIPE 4• PERFORATED -SD PIPE GROUND SLOPE DIRECTIONAL ARROW • RETNNING WALL -0- -- SCALE/FLOWLINE r J�Jr- lr \ / \J r. _J ��y / /- /- - /. / / � ) / �7'7'-% ///// //,.,///////;-' i 1 (7, / / /// / v /// /// TH WETLAND BOUND Y AS MARKED BY PBS ENGINEERING AND • ENVIRONMENTAL 5/07 /,\ __ S88.04'04•E •1 . ( _ . . �. \ L_ 200 . I. / / /. // // / / / j \ I // % / / / / I I .N-NN \II I /' / / / / I 1111. 1/ i 11 I \ 11 1 1 / / / II.II III I \ III' / / /. / / /�/ / I it / / . / / / ✓-��` /l- )/) / %)) I 210 ,. 220 ' • I; \ In \ \. I \ �\.... \ 1 I \ -� \\ N \ EX 35• MAPLE \ \ N N \ 'so \ \ \ \> N„.„.. . \ V 12• MAPLE / so' *via) -BtiFfER -ERQM - WETLAND POINTS MARKED �Y--PB5- SAIGINEERING AND ENVIRONMENTAL 5707 - ___ _ 'X w' - 491-Er 11 • CEDAR EX 8• MAPLE - - - _ - �- 3 0 9 EX�_MA2LE _ .. - 'I'1�IW1 1 {I� �� EX 21 / / _ I "III II /� � \� \`- /��/� �\ .„, e \\ \ _, --- • I I. I \ \ \\ I� -' MATE / EX 2 MAPLE B $tl ou I L� I� \' C3.011- - fill �- , ' #- "'- ---- II II \\ .240 . - T-OF SL Z TOPS'`- \ • I \\ \ \ \� -F SLOPE C37 -12' \ 245.75 25 IE- 2�T.25 EX 36• MAPLE EX 15* 1=• 1 _ -f- _ _....,.(01Z7 _ _ - "'H4- (3)-Y• 8•. 11 • MAPLE C�jO -M�.. �_ -_ ��� ` - 9.- i .5\ , \'Ft\MMLE -� \ \I '••• 'EX 088-1 • Meo� c \ RIM- 230.84 1E- 227.84 \, 231.03\ - (SHT 06.0) • 200 I APPROXDAKIE EX l7 10• '�S +�>j \ CDf+,A 1 • e . \ --) EX 7'.IA PLE `\\ � ------ _ 1_ __ 720 8 0 2 O N 0_252 j V1 � c t. °0H JNS?O ' O / \ \\ TN. - I ' 246.56-��// � 1 \ \ \. EX 21• & 30• MAPLE FENCE IS OrSET l SWALE. TYP. r 250.06 - EX WPg -----639-12- SO R / \ _ 8 • y, R1M =235.29 WALL. IE- 232.00 / / 6 / EX -7. MAPLE 6•. SD CO RIM- 228.50 225.45 ( II = 221.89 (: 38.0' /HOUSE B \I PATIO I t1LT -6' SD. S.0.1 ,. ft/111- -14.5X 6 -6 SD. S ,.129 w_ H w a_ / C1 Iu' 73' 15' 2 ISCALE: 1 • - ' L•'� / OI1G UW err v 1/3e/A, 146.16' 1\ I .(SHTDC3.0) ft lE=2 • W 272:34. I EX 6' CHAIN UNK FENCE O . - :I E (SHT EC3.0) IE -2 5.09 GRASSCRETE PAVEMENT 126.16' '1 SEE CONTINUA- TION SHEET C3.1 EXPIRES: 08 /30/08 1 DRAINAGE PLAN PROJECT N0. 486 -01 REVISION NO. SHEET N0. C2.0 OF 8 I j I I j '\‘ \\ I - / 240 / \\-1-_ / \ \\ \\ ' . -_- 1 \\ \ __ ___ \ ---1 -. -_ "_ __ --c` C3.0) \ . 1 250.08 ��� �SHT C3.0 -Er,_ 64_9: &t t' MAPLE-- \AO- :Exti -24 1.9 \ ' IU, / /. MAP EX 36' MAPLE . ✓ 241.64` . \ .."---242--- / �t 03..... 236.64 \ ; ' .243.44 3* .291 (�_ _ 9.9 245.75 246.56 -{��`// ?50 �1 J HEIGHT -3' 240.79 242.94 248.25 ZI /I ./ 4.50 \3•23 243.04 244,00 \ : LOT. 6 \ 242.92 247.25 '...N.,2443.54) HbUy11SE A \ f• UPPER 63.00. >i43.00 \ WIN FF. 53.00 \ 25300 GARAGE FF-' 43.00 :1 251.50 `ro I8\ \ R \ \' �EEX,rL22�" & 30- MAPLE =rf4 243.00 1. 245.19 24;.25 \ Tt\ _ 237.50 238.65 .I'IP _38.79 WALL HEIGHT -3' 242.75 - 242.48 4253 9.48 239.31 241.07 -(£M MAPLE, \ \ ?�\\ \ IX -233.8 \ \ 6 2 . /' IX =238.1 \\ '' MAP -- .,.- •LE 238.,• \ \ `fX�23S.5 ' 8.00 237.44 EX 8' IX -234.3 - \ 4, MAPLE EX T \ __. _- �1 - , 236 \ - MAPLE 1 EX_ 5 h MAPLE .1 R. 21. �(' \ 228.50 I. - 232 65 231.03 �' 8 MAP 23 1 IX -234.4 ►' mil 232.75 231.23 WALL HEIGHT -3' 235.75 235.61 :238.07 HOUSE B FF -251. - 238.50 MAIN FF -241. GARAGE FF -23 . 241.00\ LOT 7 239.50 231.04 236.33 231.05 231.00 230.90 231.00 .00 230.90 231.00. 231.05 232.14 233.00 231.21 231. ' / I 236.25 5 232.25 M1? \ 75�I PERVIOUS tf PAVERS IAIIIIIP 31.42 \\I\ \ \ I -2219 \\ \ I\ \ I \\ \\ \ -1\ \ \\ \ �1 j N \ 221:0V\ \. \. . WALL HEIGHT -3' \0 \ _ _- kt _ _ -,,. st �; x \\ \ \N�\ 50.6 C\ ," �745X \ \2s41p 7 \< \S 241.83 \ - �. - . ---7---------...` �\ \ y, �_ _, \-� \ \ '24192 146.16' -- \ \ c \ -� Z i It. ... \ \ 3`�i' -272 WAI- L�HEIGH'=2'" D �" '(SHT C3.0) -EX 6' CHAIN UNK -FENCE I f(SHi C3.0) \ (. ▪ - / - `EX 6' WOOD FENCE I l : . l FENCE IS OrSET (/f 239. !II ._I 267A 157GI 2391/0 15X: 227:64 '4 - 22755. 228.02 9.518 . 227.09 WALL HEIGHT -2' l., \/- �. i'. > \ (SHE C.3. ,C121'''--- .. \ 226.15 IX 8', I k '224.15 , (2) 14 /MAPLES . ��f 226.72 i / / / 1.72 NEAR GTCH Bh TD COLLECT/ SAS t / _. (/ �' I ) /. . _ OF wA/A.,.TYP 18 DE,.6 HIGH \ ' / C\ `%/ \ L. - \ HOGf R -3' I a 0 126.16' 238.07 235.07 WALLI HEIGHT -3'. EX BLDG /4816 30.0' I WALL HEIGHT -2) IX -230.6 227.28 227,81 2.27.06 EX LOGE RAVEL. 66.1' LEGEND: f{ f. PROPOSED CONTOURS f \ -. \ f fj 1 1 \ \ 228.2 \ " (55f 030)- \ - { ) -1 IX EC0.0GY I.. BLOCK IWALL - % // 226.20 65.6' 41.1' HOUSE A ,,,,,,,,,,,,,,, RETAINING WALL 20.0' °II =1I �I II �I II �I II -FINISH GRADE, TYP \EX GRADE. TYP 20.0' EX GRAVEL. DRIVEWAY 3' CLASS B ASPHALT CONCRETE 3'. CRUSHED SURFACING RETAINING WALL 10.0' 10.0' DOSING CONTOURS GRADE SLOPE ARROW FINISH GRADE POINTS - - - -GRADE BREAK UNE - -- - SWALE/FLOWIINE RETAINING WALL PATIO SECTION C -C SCALE I: = 20' �RNEWAY • GRASSCREIE DRIVEWAY 10' CLASS B GRAVEL BASE, (MAY BE REPLACED BY COMPACTED NATIVE MATERIAL IF APPROVED .BY THE GEOTECHNICAL ENGINEER) • S -2H:1V -MAX, S -2X MIN IX GRADE.. IYP SECTION F -F: SHARED DRIVEWAY SCALE 1' - 5' ASPHALT. PAVEMENT PERVIOUS PAVERS GRASSCRETE SURFACE 28.0' 22.7' 29.0' 22.3' EX 6' & 9' MAPLES (2) HOUSE B 15.5'* UPPER FF- 263.00 ' MAIN FT- 253.00 GARAGE FF- 243.00 15.0' 5.0' UPPER FF- 251.00 AWN FF- 241.00 GARAGE FF =231.00 PROTECT IX TREE ROOTS FROM DAMAGE 5.0' 5.0' EX 'GRADE SWALE RETAINING WALL RETAINING WALL :SECTION D -D SCALE: 1' - 10' SECTION E -E . IE I@ «J EX 12' CEDAR IX -228.3 2 10 cy 9 DATE. JAN. 15, 2007 L. LL Cn 0 w w t ' p w w zo REcEl v cl Q E JUN 01 Z7 , W . • z (._ -E6 "a_0 W 9- O F- s = , Z z O is X ,13 Q 10' (9 5 U 2 0 cc/ 9.3 GRADES Y AS 5M C ST040 ECESSARY TO 1RANSMON I ^: SEE CONTINUATION SHEET -C3.1 12 227.00 1 \ \` I EXPIRES: 08/30/08 I PROJECT ND. 488 -01 REVISION N0. SHEET NO. C3.0 OF 8 SEE CONTINUATION SHEET C2 \II I \�EN� NR \ \\ 1�I\ \\ EGRESS \ � -� ---' . C i \ 2 II IIII j• 1 --?7S01;01141 TOP J'O I 1 04, 1 1 / \ j. \.:\ 1 ■ ) / \ i I ' ONIROTAPPX.) 1)� /1 / S (�7 / ETA(NING . / /W711: I \. 1 / RI11 = .11 IE= 5.61 / / EX FL�WUNE )INF1L TRENT (LOCATION � 0 TYPE 2 CATCH BASIN w /sotto GOVER . TYPE 1 CATCH BASIN ',/FRAME At GRATE © TYPE 1 CATCH BASIN w /SOIJD COVER . ■ 12' SQUARE CATCH BASIN o SD CLE1NoUr • PIPE FLOW .ARROW 6' STORM DRAIN PIPE • • — 4' OR .6' STORM DRAIN PIPE - - -- 4' PERFORATED 5D PIPE • ' DIRECTIONAL • ARROW • • = RETAINING 'WALL • - SWALE/F OOWUNE IX BLDG (•OCArroN APPROX.) T1 E AS A839 I IN ASPHALT lo SHARED DRIVEWAY DRAINAGE PLAN SEE CONTINUATION SHEET C3 / „...,../ / , SMOOTH NRAN9fWN i C'PoEMAY A ARY T D � 4 =2 \ • \. - ' I • 128.85 \ \l 14 • EXI/C!�1TDH BASIN 8.52 1 . 1 . 1 (LOCATION APPR0.) I ' . I \\ 1/� ` \ EX FE OWN/NFL C I 1 "CON APPROX R/ " I / 1 ARNG TE I IL/I \ F WW DEY HIGH I 1 \ I / . I \ I1 < 13 - I 1 I MAX < I 1 \ I III \() / (/( I I ) 1 /) ) 111 I I n 1 Ij21' T l 121.°3 / k/C N GE CUTS ALONG TOE OF .SLOPE, TYP 18- WIDE. 6- HIGH LEGEND: •• a} PROPOSED CONTOURS �� +•F�:.� E)O51IXG CONTOURS . . GRADE SLOPE ARROW � • FINISH GRADE POINTS — • — • GRADE BREAK NNE -'1 -- SWALE/FLOYNNE RETANNG . WALL ASPHALT PAVEMENT • • PERVIOUS PAVERS • GRASSCRETE SURFACE.. 1 1 ' .( ►►I / 1 I D( =231.91 c ; IX RR SPIKE IN PHALT N 88109'02 • EX WM EX r ASPHALT EX 8- w SOUTH 150TH TREE I I IX 229 , -. EX V50.96 WITH T OF SHARED DRIVEWAY GRADING PLAN SCALE: 1' - 10' COVES: 08/30/08 1 z 0 N 1 PROJECT NO. . 486 -01• REVISION NO. SHEET NO. C3.1 OF 8 WATER & SEWER NOTES: . 1. ImLfTY CRO!.SINOS/CL! ?eNCES - MINIMUM HORIZONTAL SEPARATION OF' POTABLE WATER MANS AND OTHER PARALLEL ' UTILITIES SHALL BE ME 15) FEET, EXCEPT SEWER UNES SHALL BE TEN (10) FEET. MINIMUM VERTICAL SEPARATION OF POTABLE WATER MAINS AND OTHER UTILITIES SHALL . BE ONE • (1) FOOT, EXCPT SEWER UNES SHALL BE ONE AND ONE' HALF . .. (1.5) FEET. ALL OTHER UDUIIES SHALL • HAVE A, MINIMUM HORIZONTAL SEPARATION OF ONE (1) FOOT AND A MINIMUM PREFERRED VERTICAL SEPARATION OF ONE (1) FOOT.. WHERE VERTICAL SEPARATION IS LESS THAN SIX (6) - INCHES, A FOUR (4) INCH MINIMUM THICKNESS ROT - RESISTANT FOAM PAD SHALL BE INSTALLED BETWEEN THE PIPES. Al CLEARANCES ARE . . 'MEASURED FROM OUTSIDE EDGE TO OUTSIDE EDGE. - - .. ' 2.',� -- ALL SENJICE'CONNECTIONS - SHALL BE IN CONFORMNJCE WITH SECTION 7 -15 OF NE WSDOT/APWA STANDARDS, EXCEPT AS MODIFIED OR' SUPERCEDED BY THE 'CITY OF TUKMLA • 3: 1 -114' INCH WATER SEANCE CONNECTIONS - THE 1 -1/4 -ARCH WATER SERVICE CONNECTIONS • SHALL CONFORM TO THE : REQUIREMENTS OF "SECTION 7-15 'OF THE WSDOT/APWA STANDARD. SPECIFICATIONS. THE WATER •SEANCE PIPES FROM THE • 8 -INCH AWN TO THE METER WILL BE COPPER PIPE THE WATER SERVICE PIPE FROM THE METER TO THE BOLDING WILL -BE HOPE . PIPE. WATER SERVICE CONNECTIONS SHALL CONFORM TO THE CRY OF TUKWILA STANDARD PUN' WS -18. . ' -4. COPPER WATER PIPE - COPPER- WATER PIPE SHALL BE SOFT COPPER TYPE 'K' CONFORMING TO THE REQUIREMENTS OF SECTION 9- 30.6(3)A OF THE STANDARD SPECIFICATIONS. ' - • . . 5. HOPE DOMESTIC WATER PIPE - THE HDPE 'DOMESTIC WATER PIPE SHALL 'BE HIGH DENSITY POLYETHYLENE (HOPE) EXTRA : HIGH MOLECULAR WEIGHT PLEXCO PE 3408 INDUSTRIAL PIPE, OR APPROVED EQUAL SDR 9, RATED 200 PSI AS SHOWN ON PLANS. FITTINGS . SHALL BE- MOLDED. AS RECOMMENDED BY THE MANUFACTURER AND SHAL BE THE SAME STRENGTH AND .STANDARD AS THE PIPE ON .WHICH THEY ARE USED. JOINTS SHALL BE FUSION WELDED: IN CONFORMANCE WITH THE MAUFACTRER'S RECOMMENDATIONS:. ALL PIPE SHALL BE IN CONFORMANCE WITH AWWA C906 AND SHALL BEAR THE SEAL 'OF THE NATIONAL SANITATION FOUNDATION (NSF) FOR POTABLE WATER PIPE. • . . - 6. WATER METER' - THE WATER METER SHALL BE 1 -INCH AND OF 'THE TYPE SPECIFIED. OR PROVIDED BY .THE CITY OF TUKWILA.. WATER METERS SHALL BE !SNARLED PER CITY OF TUKWILA STANDARD PUN WS -1B. • 7. GATE AND CHFCK VM VES' - GATE 'VALVES SHALL BE RESILIENT WEDGE. NRS (NON -RSING STEM) WITH •O -RING SEAS.. 'VALVE ENDS SHALL. BE MECHANICAL JOINT OR ANSI FLANGES. VALVES SHALL CONFORM TO AWWA 509 -80. GATE VALVES . • SHALL BE 'NTH 4067 OR APPROVED EQUAL EXISTING VALVES TO BE OPERATED BY CITY EMPLOYEES ONLY. AU. GATE AND CHECK VALVES SHALL CONFORM TO SECTION -7 -12 OF THE STANDARD SPECIFICATIONS. RESIUENT SEATED VALVES SHALL BE' , • U.S: PIPE MEROSEAL WATEROUS, AMERICAN - DARLING: TIT KENNEDY, CLOW, MAN, MUELLER, OR AMERICAN FLOW CONTROL SERIES 2500. ALL VALVES SHALL BE - EQUIPPED WITH CAST IRON VALVE BOLOS UNLESS OTHERWISE SHOWN ON THE PLANS. • 8. TAPPING TEE AND TAPPING VAT W. - TAPPING TEES SWILL BE CAST IRON OR STAINLESS STEEL WITH A DUCTILE. IRON OR .:.STAINLESS STEEL. FLANGE NE TAPPING VALVE SHALL MEET THE SPECIFICATIONS OF THE GATE VALVES AND SHALL BE PER - CITY. OF TUKWILA STANDARD PLAN WS-6. , .. . • . 9. VALVE BOXES - VALVE BOXES SHALL BE ADJUSTABLE TWO -PIECE CAST -IRON VALVE BOX: OF 5 INCHES MINIMUM INSIDE . DWMErER. THE TOP SECTION SHALL BE 18 INCHES MINIMUM -LENGTH WITH A•VALVE 'COVER MARKED -WATER' AS MANUFACTURED • _- BY RICH MANUFACTURING . COMPANY, SERIES. 940. OR EQUAL LIDS SHALL. BE SHORT SKIRTED. 3 -INCH MAXIMUM TOTAL DEPTH IF TAPERED AND 2 -INCH" MAGNUM. TOTAL DEPTH • IF STRAIGHT. - . • 10. FlRE PROTECTION SPRINKLEEL S!STEM - DCVA ASSEMBLY. AND FDC CHECK VALVE TO BE LOCATED WITHIN THE BLDG. FIRE SPRINKLER SYSTEM TO BE DESIGNED BY A CERTIFIED FIRE - SPRINKLER ENGINEER ' ' NE FIRE PROTECTION SPRINKLER SmIW INCLUDING MATERWS, SIZING AND CONFIGURATION IS SUBJECT TO' A' CONTRACTOR. . - PROVIDED DESIGN - BY A FIRE PROTECTION ENGINEER. THE CONTRACTOR'S BID • SHALL REFLECT THE CONDITIONS OF NE FIRE • PROTECTION ENGINEER'S DESIGN. -THE CONTRACTOR SHALL COMPLY •WITH ALL NATIONAL FIRE PROTECTION ASSOCIATION • REQUIREMENTS AS SET -FORTH BY NFPA 13, ITS AMENDMENTS AND LOCAL' REOUIRENENTS, INCLUDING BUT - NOT UNITED' TO ' ACQUISITION. OF ALL PERMITS. ALL WORK ON UNDERGROUND PORTIONS OF THE FIRE PROTECTION SPRINKLER St51tM SHALL BE . DONE AND CERTIFIED BY A UCENSED CONTRACTOR WHO HAS ACHIEVED A STATE LEVEL 'U' CERTIFICATION. SUBCONTRACTING OF SUCR WORK TO PERSONS OR FIRMS NOT CURRENTLY UCEISED -AS A FIRE PROTECTION SPRINKLER SYSTE/ CONTRACTOR IS - . • PROHIBITED UNDER WAC 212 -80. . ' . - 11. FIRE HYDRANT ASSEMBLY - ALL FIRE HYDRANT ASSEMBLIES SHALL BE. PER QTY- OF TUKVALA STANDARD PLAN WS -4. . 12. CONCRETE THRUST BLOCKS - THRUST BLOCKS SHALL CONFORM TO -THE CITY OF TUKWILA, STANDARD PUN -WS =1. • 13. SIDE SEWER PIPE - ALL SEWER PIPES SHALL COMPLY WITH WSDOT/APWA 'STANDARD SPECIFICATION SECTIONS 7 -17. & • • 7 -18. PIPE LOCATIONS SHALL BE AS SHOWN - IN' THE PUNS. • - ' • -14. GRAVITY SLOWER PIPE- ALL GRAVITY SEWER PIPE SHALL BE SIX . (6) INCH DIAMETER. POLYVINYLCHLORIDE (PVC) • .CONFORMING TO ASTM 3034. .SDR 35, OR APPROVED EQUAL PIPE .AND •FITTINGS SHALL BE FURNISHED. WITH BELLS AND . . - .SPIGOTS WHICH ARE- INTEGRAL WITH THE PIPE WALL. PIPE JOINTS SHALL BE FLEXIBLE. ELASTOMERIC GASKETS ' CONFORMING TO • ASTM 03212; SOLVENT CEMENT JOINTS SHALL NOT BE USED. SEWER PIPE SWILL' BE WD NTH' BELL ENDS FACING IN THE - •DIRECTION OF 711E LAYING, UNLESS OTHERWISE - APPROVED - BY THE CITY. . . . • 15. SEWER'FORCE MNN.P E -- THE HDPE SEWER FORCE 'ARAN, PIPE FROM THE PUMP STATIONS TO THE EO5TNG SEWER - MANHOLE .SFWL BE HIGH DENSITY POLYETHYLENE (HOPE) EXTRA HIGH MOLECULAR •WEIGHT PLEXCO PE 340• INDUSTRIAL PIPE, • OR APPROVED EQUAL STIR 11, RATED 160 P51 AS SHOWN ON PUNS. - FITTINGS SHALL BE MOLDED, AS RECOMMENDED BY THE MANUFACTURER AND SHALL BE THE SAME STRENGTH: AND STANDARD A.S. THE PIPE ON WHICH THEY. ARE USED.- JOINTS SHALL BE FUSION WELDED IN CONFORMANCE WITH THE MANUFACTURERS' RECOMMENDATIONS. ALL SEWER PIPES • SHALL. CONFORM TO SECTIONS 7 -17 & 7 -18 OF THE WSDOT/APWA 51M)DNRD SPECIFICATIONS. . • . 16. SEWER CIFAN OUTS - 'SHALL BE IN CONFORMANCE WITH WSDOT /APWA STANDARDS. 'SECTION 7 -19. CLEAN' OUTS SHALL BE LOCATED AS SHOWN ON THE PLANS AND SHALL BE THE -SAME DIAMETER AS THE PIPE ON WHICH THEY. ARE' INSTALLED. , ' . 17. SEWER PUMP STATIONS - THE PUMP STATIONS SHALL BE MODEL OP2010 UNITS AS MANUFACTURED BY ENVIRONMENT ONE . - CORPORATION (E/ONE) As' REWIRED BY VAL VIDE SEWER DISTRICT. PUMPS SHALL .BE CAPABLE OF RUNNING AT 11 GPM, 40 • PSI AGAINST A DYNAMIC HEAD OF 30 FEET.: THE CONTRACTOR .SHALL SUBMIT MANUFACTURER'S CUES SHEETS 10 THE OWNER . • AND SEWER DISTRICT FOR APPROVAL PRIOR TO PURCHASE AND INSTALLATION. THE. CONTRACTOR SHALL PROVIDE THE OWNER . NTH. A COPY OF NE INSTAL/A710N AND SERVICE MANUAL FOR THE- NEW PUMPING EQUIPMENT. THE PUMP .STATION MID RS' ASSOCIATED EQUIPMENT SHALL -BE INSTALLED ' IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS' AND PER THE -: . VAL VUE SEWER - DISTRICT REQUIREMENTS. , • . - - • . . APPROX TOP ' OF 'SLOPE --4,.. • ' g • h£:� t' i .. .8' APPROX WETLAND ov BUFFER 4. *46 o- I .(49 c„ = - •TAP WS FOR BLDG NKI.ER. 1116 (566 -mot & SEWER NOTE 10.) STAIRS, TIP. EE SHIT' 2 RETAINING WALL. lYP -, �S�rt iii 6 ^ 0-ty 1 -1/2 . DOM WS CB, TYP (SEE 31ff C2) 9'x15.5' POWER SERVICE, D80 .. (DAD) • SEPTIC PULP STATION PER VAL VUE. STANDARDS I -1/2• DOM WS- PATIO, TYP HOUSE A UPPER FF- 263.00 MAIN FF- 253.00 GARAGE FF =243.00 HOUSE. B UPPER FF- 251.00 AWN FF •241.00 GARAGE FF- 231.00 6' STATION PER VAL X01 WE STANDARDS 146.18' SEATTLE CITY UQ{T HAND HOLE, 080. r `�T o L'11 RETAO@NG WALL, TIP.. (3' NIGH M61Q IO WARN 18• VERTICAL SEPARATION 861WEF/4 WATER A & SEWER AT CROSSING • EX GRAVEL DRIVEWAY • COYWMG1TONS SERVICE, D80 (PHOttE. CABLE, ETC.) EASEMENT FOR INGRESS, EGRESS & UTILITIES POWER SERVICE,' 080 (UNDERGROUND)' - Y SS FL . - EX DOM W5, LOCATION APPROX. FIELD VERIFY PRIOR TO CONSTRUCTION POWER SOME CONNECTION, D80 (UNDERGROUND AT POLE) a 8 0 rc n O 0 BLOCK . WALL EX 5D PIPE (LOCATION. APPROX.} -. EX EAST EDGE CONCRETE APRON EX CATCH BASIN : -I (LOCATION APPROX.) J SD TYP .. .. (SEE SHIT -C2) IOU 1 -1/2' DOM W5 1 -I/2' DON W5 EX SD OUTLET. . <ry .(LOCATION 0•l • - APPROX.) • EX RR SPIKE M. ASPHALT • 18. PIPE TRENCH & 861)0160 - ALL ' PIPE SHALL BE LAID ON A PROPERLY -PREPARED FOUNDATION IN CONFORMANCE WITH , • THE REQUIREMENTS OF WSDOT /APWA SPECIFICATION 7- 08.3(1). THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH • • - BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND • COMPACTION OF REQUIRED. BEDDING MATERIAL 'TO UNIFORM GRADE .S0 THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A- UNIFORMLY DENSE. • UNYIELDING -BASE.' IF 1146 NATIVE MATERIAL IN THE - BOTTOM OF THE TRENCH MEETS THE REQUIREMENTS FOR 'GRAVEL 8ACKFGI . FOR PIPE BEDDING' THE FIRST UFT OF PIPE BEDDING MAY BE OMITTED, PROVIDED THE. MATERIAL IN THE. BOTTOM OF NE TRENCH IS LOOSENED, REGRADED AND COMPACTED TO FORM A DENSE UNYIELDING BASE. ' ' . ' ' 19. PIPE TRENCH RACKED 1 - 'TRENCH BACKFlLL FOR PIPES SHALL BE _COMPACTED TO 95 • PERCENT MAXIMUM DENSITY - PER A5TM D -698, AND SHALL BE IN 'ACCORDANCE WITH SECTION ..7-08.3(3) OF NE WSDOT/APWA STANDARD SPECIFICATIONS. BACKFILL . MATERIAL OF TRENCHES SHALL BE. PER SECTION 9- 03.12(3) OF THE ASCOT /APWA Sf80AR0 SPECIFICATIONS. - - 20.- 6461116 1ESTING & DISINFECTING - THE - CONTRACTOR SHALL - PROVIDE PLUGS AND TEMPORARY--BLOW OFF ASSEMBLIES FOR 'PRESSURE TESTING AND DISINFECTION. TESTING AND DISINFECTION SHALL' BE CONDUCTED IN ACCORDANCE WITH THE . REQUIREMENTS OF THE STANDARD SPECIFICATIONS. . •. - • 21-' 216166 PIPE COVER - ALL..WATER PIPE SHALL HAVE .3' {ANNUM COVER AND 6' MAXIMUM COVER FROM FINISH GRADE, • UNLESS OTHERWISE 'APPROVED BY NE CRY. WATER SERVICE PIPE SWILL HAVE. 3' MINIMUM COVER FROM FINISH GRADE • 22. SEWER TESTING &• 111J5HINC TESTING & FLUSHING SHALL. CONFORM TO THE - REQUIREMENTS OF - SECTION 7- 17.3(4). WSDOT/APWA. - , _ . , _ •. ., - - 23.'vurtew 510E SEWER'PIPE COVER - SIDE. SEWER'S SHALL HAVE 2' MINIMUM COVER FROM FINISH, GRADE; UNLESS ' . OTHERWISE APPROVED BY NE CRY. - , . - - 24.- CONNECTION -TO- EXISTING SANITARY SIDE SEWER -' THE LOCATION OF THE' EXISTING SANITARY SIDE SEWER IS APPROXIMATE THE CONTRACTOR SHALL VERIFY. TT' S LOCATION PRIOR TO CONSTRUCTION • AND IMMEDIATELY BRING ALL PROBLEMS OR CONFLICTS TO THE ATTENTION OF THE ENGINEER. - . . . 25. - INSTALL ALL PIPING, FIXTURES. 'EQUIPMENT. AND ACCESSORIES -IN STRICT ACCORDANCE WITH • NE PLUMBING LAWS, RULES,. AND REGULATIONS OF THE STATE OR CITY, WHICHEVER . REPRESENTS THE HIGHER. STANDARD. -ALL WORK SHALL BE. APPROVED BY -THE STATE AND CRY PLUMBING INSPECTORS. • • - 26.' RESTORATION - ALL EXISTING IMPROVEMENTS REMOVED OR DISTURBED M THE -COURSE OF. THE WORK SHALL 86 RESTORED TO THEIR ORIGINAL CONDITION. - . • .. . 27. p0WER & COMMUNICATIONS - ALL POWER' AND' COMMUNICATIONS SERVICES SHALL BE DESIGNED BY OTHERS. .POWER AND • COMMUNICATIONS . SYSTEM 'DESIGNS AND INSTALLATIONS SHALL BE PER THE SERVICE PROVIDER AND GOVERNING AGENCIES • - STANDARDS, SPECIFICATIONS AND REQUIREMENTS. THE POWER AND COMMUNICATIONS SYSTEMS SHOWN ,ON THIS PLAN ARE CONCEPTUAL AND ARE SUBJECT TO ORANGE BY' THE • CRY :AND 'SERVICE PROVIDERS. . SOUTH 150TH. STREET EX DOM W5, (LOCATION APPROX.) r RETA8NO WA WALL, WI • (3' HIGH LAX) EX FLOWUNE /INFILTRATION TRENCH (LOCATION APPROX.) RECENEO 'AIN '0 2110 `zFM WATER SYSTEM BLOW -UP DETAIL SCALE 1' -10' - EX COMMUNICATIONS UNE (LOCATION APPROXIMATE) 8.d. REDUCER 8''SS -CO PER CoT . STD DWG SS -2 1 -1/2' DOM WS ,1 -1/2' DON-WS 2. 55 FL' REAPING WALL. TYP (3' HIGH imx) MAW6MN' 18• VERTICAL SEPARATION BETWEEN WATER Y SEWER AT . 0' 10' 2o' SCALE:. 1' - 20' EX SMH RIM =253.9 ' INV =250.2'(E ->W)' EX 6' 55, S =2% PER SIDE SEWER INFO FROM ,VAL 'Alt SEWER DISTRI1 INSTALL 8'x6•x48 COTE AT .' DIMING 8 PIPE 1E- 250.4* 8'x45 WE EX'EDGE ASPHALT E.X 6 W EX ASPHALTSOUI'H 150TH ST TAG 6' EAST PRODUCED ERLY • 10.4803 & 4805 5LF -8. 55, 5-284 MIN t/C EX EDGE EX RR SPIKE IN ASPHALT CONNECT COMMUNICATIONS . LINE TO EX SERVICE., D80 N•(LOCATION APPROX.) EXPIRES: 08/30/06 W 0 o KA Z W W < Ct Oa LJ' WZ O ixO �W.'.. W a z Q ENO W 0 W. ~ ? -C./) . Z Q I< W 2 0Og • 2 UX -'Q. c�X O • PROJECT NO.' 488 -01 REV15106 N0. SHEET N0. C4.0 OF 8 FILTER FABRIC MATERIAL 60' WIDE ROLLS. . USE STAPLES OR WIRE RINGS ..TO ATTACH rx2x14'GAUGE WIRE FABRIC OR EQUAL 8.= 41= 11= 11 11- 11 =1T =11 =R= 11= 11 =1I= =1S.I1= BURY BOTTOM OF' FILTER MATERIAL IN 8'x12' TRENCH • • 2'x4' WOOD POSTS OR . STEEL FENCE POSTS 2 x2'x14 GAUGE WIRE • FABRIC OR EQUAL FILTER FABRIC MATERIAL PROVIDE 3/4' - 1:5' WASHED GRAVEL BACKFILL IN TRENCH AND ON BOTH SIDES OF FILTER FENCE FABRIC. AT THE SURFACE B' MIN r.4. WOOD POSTS OR STEEL FENCE POSTS FILTER FABRIC FENCE . NOT TO SCALE 1. ANY DAMAGE SHALL . BE REPAIRED - IMMEDIATELY. • 2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE; THEY MUST 8E• INTERCEPTED • AND CONVEYED TO A CATCH BASIN WITH A CATCH BASIN PROTECTION INSERT. - 3. R 5 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 CHANNEUZATKON OF FLOWS PARALLEL TO THE FENCE IF THIS OCCURS. REPLACE . THE FENCE AND /OR REMOVE THE TRAPPED SEDIMENT. . REMOVE THE SEDIMENT WHEN R REACHES 6' HIGH. 5. REPLACE ALL FILTER 'FABRIC WHICH HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN. 4' HIGH BARRIER FENCE • EXISTING GRADE DRIPUNE OF TREE • (DISTANCE VARIES) SUPPORT POST EXISTING TREE 11= 1111 _II =11 =11 =11 - II- If- II- 11 -11 -I1 TREE PROTECTION DETAIL NOT TO SCALE . NOTES: 1. IN SOME LOCATIONS WORK WITHIN THE DRIPUNES OF TREES MAY BE REQUIRED.. EXTRA CARE SHALL BE TAKEN DURING ALL ' CONSTRUCTION ACTMTY WITFLIN DRIPUNE OF TREES TO PROTECT THE EXISTING TREE AND TREE ROOTS FROM DAMAGE 2. BARRIER FENCING SHALL BE LOCATED AT THE DRIPUNES OF EXISTING TREES LOCATED WITHIN OR NEAR THE CONSTRUCTION UNITS, WHICH ARE NOT PROTECTED BY FILTER FABRIC FENCING. o 1 la 1ESC PLAN NOTES 1. ALL TREES TO BE REMOVED SHALL BE VERIFIED W3H 1HE GEDIECFNICAL- ENGI®L PRIOR TO RD/OVAL ALL COSTING TREES TO REMAIN SHALL BE PROTECTED FROM 0ALFGE. 2. THE CONTRACTOR SHALL OONSTRUCT A TEMPORM" CONSTRUCTION .ENTRNCE N CONFORMN10E WRFf THE DETAIL ON THIS SHEET. EQUIPMENT 5H11- BE C PANED OF ALL DIRT AND DEBRIS BEFORE 081FR010'THE. PUBLIC STREET. 3. THE LOCATONS' OF ALL COSTING UIRUIES SHOWN ARE . . APPROXIMATE AND MUST BE FIELD VERIFIED. 4. INSPECTIONS OF THE - EROSION CONTROL MEASURES SHALL BE PERFORMED ON A REGULAR 8455 & ADDITIONAL NSFECI1OPS SHALL 60 MADE AFTER EACH LARGE RUN -OFF PRODUCING PREOPITATION EVENT. 5. RELOCATE FILTER FABRIC FQICE AS NECESSARY 10 FACILITATE . CONSTRUCTION AND PROTECT THE DOWNSTREAM SWILL/. 6. ALL NEW AND EXISTING CATCH BASIS THAT MAY- 1JDU.ECT RUNOFF FROM DISTURBED - SURFACES' STALL BE PROVIDED WITH CATCH BASIN PROTECTION UNTIL THE SITE HAS BFDM FULLY STABILIZED. 8. CONTRACTOR SHILL CLOSELY MONITOR THE NR.Q7 TO CBI TO ENSURE ADEQUATE SEDIMENT REMOVAL 5 /CHIDED. 9. TRIANGULAR SILT DOOM SHALL 13E INSTALLED WINN 1HE NIERCEPTOR SWALFZ AS NECESSARY TO PREVENT SEDIMENT LADEN WATERS FROM LEAVING THE SHE SRCING SHALL BE I EVERY 20 LEGEND FILTER FABRIC FENCE SAWCUT'UNE BUILDING OURINE �-- TEMPORARY INTERCEPTOR SCALE °o°o°oad'o'b PIPE TO BE - REMOVED =EX HOG NET FENCE IS 1.3' SOUTH OF SET REBAR WITH CAP ��— — 260 51--_ • EX 6' CHAIN / LANK FENCE -AVE 3 PROTECT • / ,mss 0 L_ J GROUND SLOPE DIRECTION .ARROW TRIANGULAR • SILT DIKE ' EXISTING -TREES TO BE REMOVED. EXISRNG TREES TO RD4NN CONSTRUCTION ENTRANCE • • A/C PAR TO BE REMOVED AND REPLACED Siltsace CATCH BASIN SILT FILTERING SYSTEM, OR APPROVED EQUAL. CATCH - BASIN CATCH BASIN PROTECTION INSERT NOT TO SCALE NOTE THE S1tsock8 SEDIMENT CONTROL DEVICE IS MANUFACTURED BY: ACF ENVIRONMENTAL, INC. 2831 CARDWELL ERNE RICHMOND, VA 23234 PHONE 800- 448 -3636 N 01'14'48' E 154.95' - N. 1 /_1(11(t(6--((z_z •v III \wo.j\`\ \). r� \ F ), \ \-pl II-I //-__,\\ \\,-11'. I�II1 M . PSI I �` /. \ �j) \Y !II 11. l 1III ;I ,,� ,1 `<< 1 I i. I\ I I N �\ ICI ij 11 [ I5 -I I 1 1 I I /j\ \ \\ N 4/ • • - . ESTIMATED PAVEMENT PATCHING FOR WIRY INSTALLATION ti`s` 8 T `^ m CONSTRUCTION ENTRANCE NOT TO SCALE- FEET MN 044 SLOPES GREATER THAN 105. 10. THE WORK AREA SWILL 80 GRADED AWAY FROM ,THE TOP OF - SLOPE TO PREVENT SURFACE WATER RUNOFF FROM 1850W1RG010 OVERLAND OVER THE DIE11110 STEEP SLOPE AREA .. EX .6' 8000 'FENCE 11. CONTRACTOR SHN1.AVOID CONCENTRATING SURFACE WATER RUNOFF AND SHALL PROVIDE SHEET FLAW OVER P801501ED POR11046 OF THE SITE AS MUCH AS.POSSISE. LIMITS, TYP- 08Z I 1111 �/l \ \ sti EX-FLBWMNE�ODULIRADQ.H/ —�. M ' EX -CATCH iRF31CH {LOCd11Qaf5R (LOCATK)H • /. Bn51 �, EX EAST EDGE APF X� _7 2. S PIPE .(LOCAT1 • • • 1\ \III '{I • \ \,\ NVr �, f � _� � 24• EVENT IR�RNF,RESS. CONCRETE APRON : - .- • SA �� •.• - \\ —� _J /� �/ EX. GRAVEL DRNEWAY ONJJPPROX. : - EX ECOLOGY �- 230 _s. BLOCK x.- � -PR01E J IT ' T 50 BU FR t)1 TADS /A7 KEEN \.1 E�IVII D' M /// I1 T1�WE1L.AND N ARY AS MARK / B P S GINEEEING AND / E VIi ON ENT 5/07 'OF UNE PRDDU�/ST • z -94 X....-;----, z= Imo,, - -z�-`� \--X— X9'14 z z��z 1 v `.� .\ \ ',? / /-- — � — !Ol OURET. --INGRESS, �GRa -CLEARING l��. \ \\ —% �/I �-- 2zo tiro mezzo — 1 -\ �/ . �.• 2-= ��V 1- \� -�--�1 �i� `I EX • 70 BGRAVEL. Y • I� ----- \. `{ — �I TEMPORARf INTERCEPTOR • SCALE., 1YP - .- V'tititi / // ,y 7 / )�� \�/� / / /.� //j Tr, / /`s \ fi i /J / / /// 2// (c Y' 15' 2CY / // ApyRox) // / 1 EXPIRES: 08/30/08 0' 10' 20' -4G . SCALE 1 - zo' RECEIVED • ULAN 01 2001. aOMYUNTT i DESIGNED: GMM 9 r O N A Z J J 0 CO 0 Ct W C —0 w coU O n -Z W w O LLKz >- 1•- WFIO_H g z W s 0w ¢?3 a O -2 5 ▪ W w •a (/) PROJECT ND. 486 -01 REVISION NO. 1 SHEET ND. C5.0 OF8 IE- 225.45 (S,W) IE=221.69 (E.N) 6' PVC SD, S =0.02 ft/ft .. FINISH • - GRADE, 1w ' EX GRADE, TYP 48"0 TYPE 2 CB CBI -TYPE 2, 48'• RIM =228.50 IE =225.45" (S,W) IE =221.89 (E,N) r6' HOPE 5D, ' S=0.02 ft/ft . 72LF -6' HOPE PIPE TO 8E- LAID ON EXISTING SLOPE, (MEASURED LENGTH =78't) NOTE SANITARY TEE • OR SWEEP MAY BE INSTALLED IN UEU OF A WYE AS SHOWN. STRAIGHT TEES ARE NOT ACCEPTABLE. BLIND • STEEL FLANGE. Z 0 • IE =225:45 PVC PIPE & FITTINGS, TYP. CLEAN -OUT DETAIL (UNPAVED AREAS) NOT TO SCALE RINGS w /BOLTS • • 6' HOPE FLANGED END 6" -HDPE .SD, - - S=0.02 -• ft/ft TO GABION OUTFALL ' ENERGY DISSIPATER - NON -SHRINK • ' -GROUT CB1: MANHOLE ANCHOR DETAIL 0 cS 13.1' MATCH TOP OF GABION • 'MAT TO EX GRADE AT • CENTER OF MAT NOTES: 1. GRASSCRETE MATERIAL SHALL BE GRASSPAVE2 PAVERS AS MANUFACTURED BY INVISIBLE-STRUCTURES INC. OR EOWL 2. PERVIOUS PAVERS SHALL BE ECO -STONE PAVERS AS MANUFACTURED BY. MUTUAL MATERIALS, OR EOUAL 3. FOR GRASSCRETE, GRASS/PLANT TYPES SHALL BE SPECIFIED.BY A LANDSCAPE ARCHITECT OR MANUFACTURER. PERVIOUS PAVERS (ECO- STONE) OR . GRASSCRETE PAVERS (GRASSPAVE2). 'HYDROGROW MIX BELOW RING_ (GRASSCRETE ONLY, - SUPPLIED BY MANUFACTURER) CONCRETE 'SAND • • .(CLEAN„ SHARP SAND) 'ASPHALT PAVEMENT • • 6'x3'x1.5' THICK - GABION,. P11ED MATH 3 " -6 "0 ROCK - 6' HDPE PIPE TO BE . WD -ON EXISTING SLOPE 9'x3'x0.75' THICK - GABION MAT, FRIED WITH 3 " -6 "0 ROCK • PIPE ANCHOR, . SEE NOTE . 9'x6'x0.75' ,THICK GABION MAT, FILLED. WITH 3 " -811 ROCK AI :. ', .! z . A .,' _ t f', 1 ` . �� MIlliA aliu� INITUOMII I A�� a iauiill�,lilu11.dlibill sigallnia ilt% / • !, `- .rte.•,•', i.�,i - i • =4, . !• • •. �• SOD (GRASSCRETE ONLY) . MATCH TOP OF GABION' MAT TO EX GRADE AT CENTER OF MAT - 9'16'x0.75' THICK GABION MAT, FILLED , .. WRH 3' -6'0 ROCK 0 5 - 9'-3'0.75' THICK GYGION MAT, FILLED ED WI1H. 3' -6 "0 ROCK VARIES • AS PER LOADING • REOUIREMENTS - FILTER FABRIC MATERIAL . COMPACT NATIVE SOBS TO PROVIDE A FIRM UNYIELDING•BASE MATCH BOTTOM " - OF GASTON MAT TO EX GRADE Extends' 12' Below • . Bose Course . 6 'MIL IMPERMEABLE PLATE OR LINER • COMPACTED SUBGRADE, 95% MODIFIED PROCTOR 'DENSITY . Li GABION OUTFALL ENERGY DISSIPATER DETAIL . SCALE i' = 5' NOTE: PIPE ANCHORS SHALL BE COMPOSED OF APPROXIMATELY SEVEN (7) FEET OF *14 REBAR,`W1GCH SHALL BE BENT TO SIT OVER THE PIPE RESTRICTING HORIZONTAL MOVEWM. MAINTAIN A 1/2" CLEARANCE BETWEEN THE PIPE . AND THE ANCHOR, 10 A1LOW. FOR PIPE CONTRACTION & EXPANSION. THE REBAR ANCHORS STALL BE DRIVEN APPROXIMATELY 3 FEET INTO THE SLOPE 'COMPACTED SANDY. GRAVEL ROAD BASE INTERSECTION OF.ASPHALT AND PERVIOUS PAVERS OR GRASSCRETE DETAIL. NOT. TO SCALE 3/46 :HOLES DRILL INTO ALL SIDES OF THE TOP RISER _ . NDS GRATE, CONSULT ARCHITECT OR .OWNER FOR SPECIFICATIONS • PRIOR TO ORDERING NDS 6- RISER - - - SLOPE TO DRAIN SLOPE TO •DRAIN 11 =J1 3 .3 O 3.O 3•I� j'.1� 1 1"11 =:1' 1l :I `P 1-71114:111 u, �sI=,_ 1I- J 11 I 1 1 VI TO Still ral 114AIL fI II. 6—.-14;;•.i-I.,-ii.":...;.1 II= 11= 11 =1L• . 11 =11. 11:111 11:��1i" :11�I:11: II:�I:II., -11.= 11= J =11. 11 =1I 'PEA GRAVEL , FILTER FABRIC S =2H:1V MAX. -MIN ' KEYSTONE RETAINING WALL AS - MANUFACTURED BY -ALLAN BLOCK CORP.-OR EQUAL MAX HEIGHT-3'; SETBACK 1T • A/C THICKENED-EDGE ALONG BASE OF WALL, 18' -WIDE A -6" HIGH EX GRAVEL DRIVEWAY ' . -' S' CLASS B ASPHALT CONCRETE 1.0 4 PERT SD, 15 =225.61 10' CLASS' B GRAVEL BASE. - INFILTRATION . (MAY BE REPLACED BY COMPACTED TRENCH NATIVE MATERIAL IF APPROVED BY THE GEOTECHNICAL ENGINEER). A/C .THICKENED EDGE ALONG BASE OF SLOPE, 18' WIDE & 6' HIGH ' EX GRAVEL DRIVEWAY r CUSS B ASPHALT. CONCRETE ' 3' CRUSHED SURFACING NDS 6' RISER(S) AS REWIRED BACKFILL - WITH COMPACTED SOIL . .NOS 12'. EXTENSION . RISER WITH OPENINGS NDS UNIVERSAL LOCKING .OUTLET - INVERT ELEVATION STORM DRAIN. PIPE FINISH . GRADE, TYP z of 3'. CRUSHED SURFACING S =2H:1V MAIL -' S =2% MIN • EX 'INFILTRATION TRENCH • (LOCATION &.DIMS APPROX) ' 10" CLASS B GRAVEL BASE. .(MAY BE. REPLACED BY COMPACTED NATIVE MATERIAL IF APPROVED BY THE GEOTECHNICAL ENGINEER) - KEYSTONE RETAINING WALL .. AS MANUFACTURED BY ALLAN BLOCK CORP. OR EQUAL MAX HEIGHT=3' SETBACK -12" SECTION G -G: SHARED DRIVEWAY SCALE: 1' = 5' SECTION H -H: SHARED DRIVEWAY SCALE: 1' - 5' I W o J. W w CL m. 0 ufY,l�i Z z ;.: 0 U W Z (1)< NDS 12" SQUARE CATCH BASIN ASSEMBLY DETAIL NOT TO SCALE - (LANDSCAPING AREAS)_ • NOTE FOR USE IN LANDSCAPING AND LAWN AREAS ONLY. NOT TO BE USED IN AREAS .• SUBJECT TO VEHICULAR TRAFFIC LOADING. - PROJECT. NO. 486=01 REVISION NO. • 1 EXI.RES:. 08/30/08 ,) 60 OF 8 GENERAL CIVIL NOTES: 1. STANDARD SPECIFICATIONS -'ALL MATERIALS AND WORKMANSHIP SHALL CONFORM -TO•TIE MOST CURRENT VERSION OF THE STANDARD SPECIFICATIONS FOR ROAD, BRIDGE MID MUNICIPAL . CONSTRUCTION AND THE STANDARD PLANS FOR ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION. PREPARED BY THE WASHINGTON STATE DEPARTMENT OF TRANSPORTATION ( WSDOT) AND THE WASHINGTON STATE CHAPTER OF THE. AMERICAN PUBLIC WORKS ASSOCIATION (APWA) EXCEPT 'AS MODIFIED OR SUPERSEDED BY THE CRY OF TUKRLA DEVELOPMENT GUIDELINES A DESIGN AND CONSTRUCTION STANDARDS. THE UNIFORM BUILDING CODES; PERMIT CONDITIONS ;: AND ALL OTHER APPUCABLE CODES, ORDINANCES, STANDARDS, AND POLICIES. THE STANDARD PLANS AND STANDARD SPECIFICATIONS (WSDOT /APWA) MAY BE OBTNNED'FROM THE OFFICE OF PRE - CONTRACT ADMINISTRATION AT THE HIGHWAY ADMINISTRATION BUILDING, OLYMPIA. WASHINGTON 98504, OR BY TELEPHONE • ORDER: (360) 705 -7835. • .) 2. PRE - CONSTRUCTION REOUIREMENIS: A) PRIOR TO STARTING CONSTRUCTION, CONTACT ONE -CALL, (1- 800 - 424- 5555) 'FOR UTILITY LOCATIONS. 6) AT LEAST 48 HOURS' BEFORE STARTING PROJECT SITE WORK, NOTIFY THE T UIIUTES INSPECTOR AT 206 -433 -0179. REQUEST A PUBUC WORKS UTILITY INSPECTION AT LEAST 24 HOURS IN ADVANCE BY CALLING 206- 433 -0179. . 3. PLANS A STANDARDS - A COPY OF THE APPROVED PLANS•MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION 5 IN PROGRESS. CURRENT COPIES OF THE CRY OF; TUKWILA . DEVELOPMENT GUIDELINES & DESIGN AND CONSTRUCTION STANDARDS SHALL BE AVAILABLE AT THE JOB SITE 4. ELECTRONIC CAD FEE - AN . ELECTRONIC CAD VERSION OF THIS PUN SET 5 AVAILABLE FROM LAYTON & SELL UPON REOUEST. 5. DBAY8f9FaF - NOT EVERY DETNL OF THE CONSTRUCTION IS SHOWN ON THESE DRAWINGS. WHERE CONDRONS ARE NOT SPECIFICALLY INDICATED, BUT ARE OF 'A SIMILAR CHARACTER TO DETAILS SHOWN, SIMILAR- DETAILS OF CONSTRUCTION SHALL BE USED, SUBJECT RD APPROVAL BY •THE ENGINEER. THE CONTRACTOR SHALL BE RESPONSIBLE FOR FIELD VERIFICATION AND 'COORDINATION OF ALL DIMENSIONS AND ELEVATIONS BEFORE PROCEEDING WITH ITHE WORK. THE • CONTRACTOR SHOULD REVIEW THE DRAWINGS PRIOR TO STARTING CONSTRUCTION AND BRING ALL PROBLEMS IMMEDIATELY TO THE ATTENTION OF THE ENGINEER IN ORDER TO AVOID DELAYS A COPY OF THE APPROVED PUNS MUST -BE ON -SITE WHENEVER CONSTRUCTION 5 IN PROGRESS. I 6. EX6TNG UTILITIES - EXISTING -UTILITY LOCATIONS SHOWN. (EXCLUDING DOMESTIC WATER SERVICE AND COMMUNICATIONS SERVICE) ME BASED UPON THE SURVEY. PREPARED' BY SCHROETER LAND SURVEYING, PROJECT NO 06252, DATED 10/11/2006 AND SEWER AS -BUILT • INFORMATION PROVIDED BY VAL VUE SEWER DISTRICT. THE EXISTING DOMESTIC WATER SERVICE PIPE LOCATION AND EXST/NG COMMUNICATIONS SERVICE LOCATION IN THE STREET HAVE. BEEN APPROXIMATED BY THE ENGINEER AND MUST BE FIELD LOCATED PRIOR TO BEGINNING CONSTRUCTION. IT IS THE SOLE RESPONSBIUTY OF THE CONTRACTOR . TO. INDEPENDENTLY VERIFY THE ACCURACY. OF ALL UTILITY LOCATIONS SHOWN, AND TO FURTHER DISCOVER AND AVOID ANY OTHER UTILITIES NOT SHOWN HEREON WHICH MAY BE AFFECTED BY THE IMPLEMENTATION OF THESE DRAWINGS. THE CONTRACTOR SHALL OBTAIN ADDITIONAL UTILITIES • INFORMATION FROM THE APPROPRIATE AGENCIES AND SHALL HELD VERIFY UTILITY LOCATIONS ON THE GROUND PRIOR TO CONSTRUCTION. THE CONTRACTOR SWLLL COORDINATE W1114. THE PUBLIC AND PRIVATE UTOITIES TO DETERMINE THE WORK AND INSPECTORS NECESSARY RO' DISCONNECT, • CUT. CAP, ABANDON. RELOCATE. OR REPAIR THER FACILITIES. THE CONTRACTOR SHALL BEFORE AN EXCAVATION. BEGINS, CALL THE-UTUBES UNDERGROUND LOCATION CENTER AT • '1- 800 - 424-5555. - I - 7. SURVEY COND20L A TOPOGRAPI Y - THE "EXISTING BOUNDARY, TOPOGRAPHIC AND UTILJTY INFORMATION SHOWN IS BASED ON THE SURVEY PREPARED BY SCHROETER LAND SURVEYING, PROJECT NO 06252, DATED 10/11/2006. ADD8IONAL TOPOGRAPHIC DATA WAS ADDED BASED ON THE UDAR• SURVEY DATA PROVIDED BY THE PUGET SOUND UDAR CONSORTIUM. - 8.- GEOTECHNICAL & SUBSURFACE INVESTIGATION - A GEOTECHNICAL REPORT WAS PREPARED BY ICICLE CREEK ENGINEERS. DATED 7/9/2004, FILE NO. EE 0506 -001. 1ADDRIONAL • GEOTECHNOAL INFORMATION FOR THE EXISTING. SHARED ACCESS 'DRIVEWAY WAS PROVIDED. IN A REPORT PREPARED BY CREATIVE ENGINEERING OPTIONS INC., DATED .MARCH 7, 1991, JOB .NO. • 91 -1138. • • 9. WORKMANSHIP & JOB SITE SAFETY - THE CONTRACTOR SHALL CONDUCT.ALII WORK IN A SAFE MANNER AS REQUIRED BY ALL APPUCABLE CITY, COUNTY, STATE AND FEDERAL REGULATIONS.' THE • ENGINEER HAS NOT BEEN RELINED TO PROVIDE DESIGN AND /OR; CONSTRUCTION REVIEW SERVICES RELATED TO THE CONTRACTOR'S SAFETY PRECAUTIONS, OR TO MEANS, METHODS, TECHNIQUES, SEQUENCES. OR PROCEDURES FOR THE CONTRACTOR TO•PERFORM HIS WORK. ;THE UNDERTAKING OF PERIODIC SITE ■I5115 BY THE ENGINEER SHALL NOT BE CONSTRUED AS SUPERVISION OF ACTUAL CONSTRUCTION NOR MAKE HIM RESPONSIBLE FOR PROVIDING A SAFE PLACE FOR THE PERFORMANCE OF WORK BY THE CONTRACTOR OR THE CONTRACTOR'S EMPLOYEES OR EMPLOYEES' OF SUPPLIERS OR SUBCONTRACTORS, OR FOR ACCESS,-VISITS, USE, WORK TRAVEL OR OCCUPMNCY.8Y-ANY PERSON. . 10. PERMITS - THE CONTRACTOR SHALL OBTAIN ALL LOCAL, STATE AND FEDERAL PERMITS REQUIRED FOR THE WORK IN ADDITION TO THOSE OBTAINED BY THE OWNER. THE CONTRACTOR SHALL CONDUCT N1 WORK 91 CONFORMANCE WTIH THE VARIOUS LOCAL STATE TARO FEDERAL PERMITS AND APPROVALS REQUIRED FOR THE PROJECT. 11. DEMOLITION & DISPOSAL - -THE REMOVAL AND .DISPOSAL ' OF ALLFOUNDATIONS, STRUCTURES, PIPING, FENCES, NM OTHER OBSTRUCTIONS SHALL BE •DONE IN ACCORDANCE WITH SECTION 2 -02 OF THE STANDARD SPECIFICATIONS. 12. PROTECTION OF PROPERLY - THE CONTRACTOR SHALL -PRO'TECT FROM DAMAGE OR' DESTRUCTION PRIVATE AND PUBUC PROPERTY ON OR IN THE VICINITY OF THE WORK THAT IS NOT SCHEDULED FOR REPAIR REPLACEMENT OR REMOVAL AND'SHLL ENSURE THAT'INTERFERENCE WITH THE USE OF SUCH PROPERTY 5 MINIMIZED. 13. REMOVAL OF STRUCTURES A OBSTRUCTIONS - THE REMOVAL AND DISPOSAL OF ALL BUILDINGS, FOUNDATIONS, STRUCTURES, FENCES. -AND OTHER OBSTRUCTIONS SHALL BE DONE IN ACCORDANCE WITH SECTION 2 -02 OF THE APWA/WSDOT STANDARD SPECIFICATIONS. ALL REMOVAL OF PAVEMENT, SDEWAU6.AND CURBS SHALL BE PERFORMED-IN CONFORMANCE WITH SECTION 2 -02.3(3) OF THE STANDARD SPECIFICATIONS. ASPHALT CONCRETE SHALL BE SAWCUT.FOR.A SMOOTH TRANSITION. CONCRETE PAVEMENT SHALL BE SAWCUT OR REPLACED TO AN EXISTING JOINT. 14. EXCAVATION A_BACKFILL - SAFE EXCAVATION A 8ACK1LL PRACTICES SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR AND SHALL CONFORM TO REGULATIONS ESTABLISHED BY . PERTINENT STATE AND FEDERAL OCCUPATIONAL SAFETY AND HEALTH AGENCIES. THE CONTRACTOR SHALL CONSTRUCT AND !MIDAIR SAFETY SYSTEMS THAT. MEET THE REQUIREMENTS OF THE WASHINGTON INDUSTRIAL SAFETY AND HEALTH ACT (RCM CHAPTER 49.17. INCLUDING WAC CHAPTER 296 -155). EXCAVATIONS DEEPER THAN 4 -FEET MUST BE SHORED, SHEETED. BRACED, SLOPED, OR SUPPORTED BY A MEANS OF SUFFICIENT STRENGTH TO PROTECT EMPLOYEES AND BE IN ACCORDANCE WITH WAC 296 -155, PART N. EXCAVATIONS DEEPER THAN 20-FEET MUST INCLUDE A PROTECTION SYSTEM DESIGNED BY A PROFESSIONAL ENGINEER REGISTERED WITH THE STATE OF • WASHINGTON IN ACCORDANCE WITH WAC 296- 155 -657. EXCAVATION MATERIALS ARE TO BE STORED AT LEAST 2 -FEET FROM THE EDGE OF THE EXCAVATION OR TRENCH WHEN EMPLOYEES ARE WORKING IN THE EXCAVATION. RETANING DEVICES MAY BE REQUIRED TO PREVENT THE MATERIAL FROM FAWNG OR ROWNG UNIT RE EXCAVATION. WHEN TRENCHES OR OTHER ;EXCAVATIONS ARE WITHIN 4 -FEET OF PUBLIC PROPERTY, BARRICADES MUST BE SET UP FOR PUBUC SAFETY. AND THE EXCAVATION MUST BE COVERED WHEN WORK IS NOT IN PROGRESS. 15. EXCAVATION AND SHORING - EXCAVATION AND SHORING SHALL BE DESIGNED BY THE - CONTRACTOR REFER TO GENERAL NOTE 14 FOR • EXCAVATION AND BACRILL INFORMATION. • 16. EXCAVATION SPOILS - CONTRACTOR SHALL COORDINATE WITH OWNER ON DSPOSAL OF EXCAVATION SPOILS. - 17. DAMAGE DURING CONSTRUCTION - ANY EXISTING PUBLIC IMPROVEMENTS DAMAGED DURING CONSTRUCTION SHALL BE REPLACED IN A MATTER TO BE APPROVED BY THE CITY OR APPROPRIATE UTILITY OWNER. IF ROADWAY PAVEMENT MUST BE BROKEN, THE TRANSPORTATION DEPARTMENT WILL REPAIR THE S)N1L1 AND BILL THE SIDE SEWER CONTRACTOR FOR THIS WORK. A REGISTERED SIDE SEWER CONTRACTOR MAY RESTORE' PARTS OF THE 5INtt) AREA OTHER THAN THE ROADWAY SURFACE - - - - • DRAINAGE NOTES: 1. CATCH BASINS - CATCH BASINS SHALL BE WSDOT /APWA TYPE L TYPE 2, OR ND5 12'X12' SQUARE CATCH BASINS, AS INDICATED ON THE PLANS. . REFER TO THE 6DS 12' SQUARE CATCH . BASIN DETAIL SHT 06.0, FOR ADDITIONAL INSTALLATION REQUIREMENTS. ' ALL CATCH BASINS SHALL BE INSTALLED IN ACCORDANCE WITH DIVISION 7 -05 OF THE WSDOT /APWA STANDARD SPECIFICATIONS AND THE MANUFACTURER'S RECOMMENDATIONS. REFER TO THE PUNS FOR FRAME AND GRATE OR SOLID COVER. REQUIREMENTS. SOME CATCH BASINS MAY BE INSTALLED WITH SPECIAL DECORATIVE GRATES. CONSULT WITH OWNER ON SNIT PREFERRED BEFORE ORDERING. ALL GRATES WITHIN 1RAFFIC. AREAS. SHALL BE RATED FOR H- 20-WHEEL LOADS. 2. STORM DRAIN PIPE - STORM DRAIN PIPE SHALL BE EIDER WATER -TIOHF JOINTED, POLYVINYL CHLORIDE (PVC) CONFORMING TO ASIR 3034,'508 35 OR SCHEDULE 40 PVC, OR NON - REINFORCED CONCRETE PIPE CONFORMING TO ASIR C- 14.CLAS5 ID, OR APPROVED EQUAL EXCEPT AS SHOWN ON THE PLAN, AND NOTED HEREIN. STORM DRAIN PIPE THAT 5 BELOW BUILDING SLABS SHALL BE SCHEDULE 80 PVC OR DUCTILE IRON. STORM DRAIN PIPE•THAT 5 LOCATED BELOW AN AREA WHICH WILL BE DRIVEN OVER, AND WHICH WAS LESS THAN 1W0 FEET OF COVER, SHALL BE. CEMENT MORTAR'UNED DUCTILE IRON PPE CONFORMING TO ANSI A21.51, CLASS 50. STORM DRAIN PIPE WHICH PENETRATES FOUNDATION WALLS OR RETAINING WALL FOOTINGS SHALL BE INSTALLED WITH CAST IRON SLEEVES. STORM DRAIN PIPE .WHICH CROSSES UNDERNEATH - BUILDING OR RUNNING WALL FOOTINGS SHALL BE INSTALLED' IN DUCTILE IRON CASING MID GROUTED IN PUCE STORM. DRAIN PIPE SHALL BE INSTALLED CONFORMANCE WITH THE '. REQUIREMENTS OF SECTION 7 -08 OF THE WSDOT /APWA STANDARD SPECIFICATIONS. EXCEPT AS MODIFIED OR SUPERSEDED BY THE CRY OF TUKWILA - 3. HOH DEMIC 901.15 HYI-EN5 (HDPE1'5TORM DRAIN. PIPE - ALL HOPE PIPE SHALL BE EXTRA HIGH MOLECULAR WEONT, HIGH. DENSITY POLYETHYLENE PE 3408, SDR 9, 200 PSI PPE WITH MOLDED FIRINGS. ALL HOPE PIPE JOINTS SHALL BE BUTT WELDED IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. MISCELLANEOUS FTITNGS SHALL BE MOLDED TYPE AND SHALL CONFORM TO THE PIPE MANUFACTURER'S RECOLWENDATONS.. ALL HOPE PIPE SHALL BE - ASSEMBLED AND INSTALLED ACCORDING TO THE MANUFACTURER'S RECOMMENDATIONS. THE HOPE PIPE WILL BE ANCHORED AT THE UPSTREAM END' AS SHOWN 014 THE PUNS. IT SHALL BE PLACED IN THE EXISTING DITCH. THE HOPE PIPE SHALL BE PLACED ON A SMOOTH, UNFORM BED. THE BED SHALL BE FREE OF LARGE ROCITS,' CLUMPS, CLODS. AND PROJECTING STONES OR DEBRIS .. 4. MANHOLE ANCHORS - MANHOLE MOORS SHALL BE USED TO SECURE THE UPSTREAM DOS OF THE HOPE PIPE TO THE MANHOLES. MANHOLE ANCHORS SEPAL CONSIST OF ONE (1) 6' HDPE • FLANGED END,. ONE (1) 6' HOPE. WAIL ANCHOR. ONE (1) 8' BLIND STEEL FLANGE" AND TWO (2). BACK -UP RINGS w/BOLTS. THE 8' STEEL BLIND .FLANGE SHALL BE GROUTED TO THE INSIDE FACE OF THE MANHOLE HOPE PIPE SHALL BE GROUTED IN PLACE. BIN]( -UP RINGS SHALL BE . PLACED ON EITHER ODE OF THE HOPE FLANGE END AND BOLTED TOGETHER. L 5. PIPE MICNOR5 - PPE ANCHORS SHALL BE COMPOSED OF APPROXIMATELY - (7) FEET OF • /4 REPAIR" WHICH SHALL BE BENT TO SIT OVER THE PIPE RESTRICTING HORIZONTAL MOVEMENT. MAINTAIN A 1/2' CLEARANCE BETWEEN THE PIPE AND THE ANCHOR TO ALLOW FOR PIPE CONTRACTION & EXPANSION. THE RFBAR ANCHORS SHALL 8E. DRIVEN APPROXIMATELY 3 FEET NW THE SLOPE 6. DABION ENERGY DISSIPATER - THE GABON EMERY DISSIPATER OWL CONSIST OF GABIONS AND GABON MATS FILLED NMI 3 -6' DIAMETER ROCK. -THE GABIONS AND GABON MATS SHALL CONFORM TO THE DIMENSIONS SPECIFIED ON THE PLANS. GABON MATS SHALL BE LAIN ACROSS THE SLOPE SUCH THAT THE INTERNAL WIRE MESH' CELL DNOES RUN ACROSS THE SLOPE THE LOCATION OF-THE GABON EVERY DISSIPATER SFW1 BE COMPACTED AND COVERED WITH FILTER FABRIC BEFORE PLACING THE GASTON STRUCTURES. ANCHORS TO HE THE GABIONS TO THE SLOPE SHALL BE ADDED IF NECESSARY TO. KEEP THE GABIONS AND GABON MATS IN PLACE 7. LETIMMEJJEKTi - THE INFILTRATION TRENCH 5HN1 BE A MINIMUM OF .36 -DCHES DEEP AND 24- INCHES WIDE. PERFORATED.PIPE.SHALL BE INSTALLED AT A MINIMUM OF 25 SLOPE NTH AT LEAST 6' OF ROCK FILL MATERIAL ON ALL SEES. ROCK 111 MATERIAL SHALL CONSIST OF .. 1 -1 /Y TO 3/4' WASHED ROCK. 8. PERFORATED PIPE - ALL PERFORATED DRAIN P1PE SHALL BE RIGID PERFORATED POLYVINYL CHLORIDE (PVC) UNDER DRAIN -PIPE CONFORMING TO THE REOUIREMENTS OF DIVISION 9- 05.2(8) OF THE STANDARD SPECIFICATIONS, OR APPROVED EOUA1. AND SHALL BE INSTALLED IN . CONFORMANCE WITH THE UNDER .DRAIN REQUIREMENTS OF THE .STANDARD .SPECIFICATIONS. - 9. naallffic - FILTER FABRIC SHALL BE MIRAFI' 140N OR APPROVED EQUAL 10. TIEINISMUM - DOWNSPOUTS SHALL BE TGNT -UNED TO THE DRNHAGE SYSTEM AS SHOWN ON THE PLAN. DOWNSPOUTS SHALL NOT BE CONNECTED TO FOOTING DRAINS. 11. FOOTING. AND jytaimets - FOOTING DRAINS AND WALL DRAINS SHALL BE DESIGNED' BY OTHERS. THESE DRAINS SHALL BE TIG i1UNED TO THE DRAINAGE SYSTEM. 12. CLEAN -OUTS - CLEAN-OUTS SHALL BE PROVIDED N BUILDING DRAINS AT ENDS, BENDS (45- DEGREES MAXNLM. PER BEND) AND AT 100 FEET MAXIMUM INIEFNNS. .CLEAN -OUTS IN PAVED AREAS SHALL BE PER WSDOT/APWA STANDARD PLAN N0. B -18b. ' REFER TO THE DETAIL ON 1115 SHEET FOR CLEAN -OUTS INSTALLED IN.LANDSCAPED.AREAS. 13. •PIPE 1RENCH A BEDDING - ALL PPE SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN CONFORMANCE WITH THE REQUIREMENTS OF WSDOT /APWA SPECFICATON 7- 04.3(1). THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED BEDDING MATERIAL. TO UNIFORM GRADE SO THAT THE DIRK LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING BASE. IF THE NATIVE MATERIAL IN THE BOTTOM OF THE TRENCH MEETS THE REQUIREMENTS FOR 'GRAVEL EIACKFILL FOR PIPE BEDDING' THE FIRST LIFT OF PIPE BEDDING MAY BE mono, PROVIDED THE •MATERIAL IN THE BOTTOM OF THE TRENCH is LOOSENED. REGRADED AND COMPACTED TO FORM A DENSE UNYIELDING BASE. IF WORKERS ENTER ANY TRENCH OR OTHER EXCAVATION FOUR FEET - OR GREATER IN DEPTH THAT DOES NOT MEET THE OPEN PR' REQUIREMENTS OF SECTION 2- 09.3(3)8, IT SHALL BE SHORED - AND CRIBBED. THE CONTRACTOR MANE SHALL BE RESPONSIBLE FOR WORKER SAFETY. ALL TRENCH SAFETY SYSTEMS SHALL MEET THE REQUIREMENTS OF THE WASHINGTON INDUSTRIAL SAFETY AND HEALTH ACT, CHAPTER 49.17 RCW. • • 14.. GRAVEL BA 11111 FOR DRAINS - GRAVEL BACKFILL FOR DRAN5 SHALL CONFORM TO THE REQUIREMENTS OF SECTION 9- 03.12(4). 15. TRENCH jigissu. L - TRENCH 84CKFILL -FOR STORM DRAIN PIPE SHALL BE COMPACTED TO 95 PERCENT MAXIMUM DENSITY, IN ACCORDANCE WITH SECTION 7- 04.3(3) OF THE WSDOT/APWA STANDARD SPECIFICATIONS. BACKFILL OF TRENCHES SHALL BE PER SECTION 9-03.12(3) OF THE WSDOT /APWA STANDARD SPECIFICATIONS. - - 16. TRENCH SURFACE RESIORATON - THE GROUND SURFACES OF ALL TRENCHES IN THE PUBLIC RIGHT -OF -WAY OR ON OFF -SITE PROPERTIES SHALL BE RESTORED TO NOR ORIGINAL' CONDTIION IN CONFORMANCE WITH T115 REQUIREMENTS OF THE CRY. OF TUKWILA. 17. CLEANING A TESTING - CLEANING & TESTING OF THE STORM DRAIN' SYSTEM SHALL BE PERFORMED IN CONFORMANCE WITH SECTIONS 7 -04 AND 7 -07 OF THE STANDARD SPECIFICATIONS, EXCEPT AS MODIFIED OR SUPERSEDED BY THE CITY OF TUKWILA. THE STORM DRAIN SYSTEM SHALL BE CLEANED OF ALL DIRT, ,ROCK AND DEBRIS PRIOR TO FINAL' ACCEPTANCE OF THE WORK GRADING AND PAVING NOTES: 1. GI FARNMARIIBRINC & 0)6015110N - ALL CLEARING, GRUBBING AND DEMOLITION SHAT BE PERFORMED IN CONFORMANCE TO THE REQUIREMENTS OF THE APPLICABLE SECTIONS OF 114E, STANDARD SPECIFICATIONS AND THE CURRENT EDITION OF THE UNIFORM BUILDING CODE THE . STRIPPED' DEERS SHALL NOT BE MIXED WITH MATERIALS TO BE USED AS STRUCTURAL FILL • 2. DRADNCC - FINAL. SITE GRADING. MUST DIRECT DRAINAGE AWAY FROM AI1 BUILDING STRUCTURES AT. A .141■11AUM OF • TWO (2) PERCENT SLOPE. PER THE UNIFORM BUILDING CODE ALL PARING AND DRIVE AREAS SHALL HAVE POSITIVE DRAINAGE TO THE COLLECTION /CONVEYANCE SYSTEM AT.TWO PERCENT MINIMUM SLOPE. PLAN DETAILS SHALL NOT SUPERSEDE THIS REQUIREMENT. • . • 3. MATCHING EXISTING PAVEMENTS A STRUCTURES - THE CONTRACTOR SHALL VERIFY THE 1004110NS, WIDTHS, THICKNESSES, AND ELEVATIONS OF ALL EXISTING PAVEMENTS AND STRUCTURES THAT ARE TO INTERFACE WITH NEW WORK. PROVIDE ALL TRIMMING, CUTTING, SAW CUTTING, GRADING, LEVEUNG, SLOPING, COATING, AND OTHER WORK INCLUDING MATERIALS AS NECESSARY TO CAUSE THE INTERFACE WITH EXISTING WORKS TO BE PROPER, ACCEPTABLE TO THE ENGINEER AND TIE CITY OF TUKWILA, COMPLETE IN PLACE AND READY TO USE. 4. REMOVAL OF PAVEMENT - ALL REMOVAL OF PAVEMENT 541411 BE PERFORMED IN CONFORMANCE WITH SECTION 2- 02.3(3) OF THE STANDARD SPECIFICATIONS. ASPHALT. CONCRETE SHALL BE . SYYCUT FOR A SMOOTH TRANSITKIN. 5. GUT & FILL SLOPF5 - NO FINAL CUT OR FILL SLOPE SHALL EXCEED SLOPES OF TWO (2) HORIZONTAL TO ONE (1) VERTICAL WITHOUT STABIUZATON BY AN ENGINEERED EARTH RUNNING STRUCTURE • 6. 6INIMLM SLOPE - ALL PARKING AND DRIVEWAY AREAS SHALL HAVE POSITIVE DRAINAGE TO THE COLLECTION /CONVEYANCE 5rb.t) AT TW'0(2) PERCENT MINIMUM SLOPE PLAN DETAILS SHALL NOT SUPERCEDE THIS REQUIREMENT. • 7. GQMPACRON - NEW PAVEMENT, AND SUBGRADE AREAS SHALL BE SCARIFIED TO A MINIMUM DEPTH OF 6 INCHES, PRE - ROILED, AND COMPACTED WITH A ROLLER OR OTHER SUITABLE HEAVY EC/JP/ENT TO A FIRM AND NON - YIELDING CONDITION, IN ORDER TO ACHIEVE A MINIMUM COMPACTION LEVEL OF AT LEAST 95 PERCENT OF THE SOILS MAXIMUM DRY DENSITY AS DETERMINED BY *5TU TEST. DESIGNATION D -1557 (MODIFIED PROCTOR)•FOR NAT MATERIAL. ' 'PRE - ROWNG AND COMPACTION SHOULD BE DONE WHEN THE SOILS MOISTURE CONTENT IS WITHIN . - THREE PERCENT OF ITS OPTIMUM, AS DETERMINED BY THIS ASIA STANDARD. ANY SOFT,' WET, OR SIGNIFICANTLY ORGANIC AREAS DISCLOSED BY PRE - ROWNG SHOULD BE OVER EXCAVATED AS NECESSARY TO REVEAL FIRM, -NON- ORGANIC SOILS, AND BACKFILLED WITH STRUCTURAL FILL 110111 TRENCHES SHALL BE COMPACTED TO AT LEAST 90 PERCENT OF THE SONS MAXIMUM DRY . DE!'I58Y, EXCEPT THE TOP TWO (2) FEET WHICH SHALL BE COMPACTED TO 95 PERCENT. REFER . TO THE GEOTECHNICAL REPORT FOR ADDITIONAL INFORMATION. -8. 51811011)841 FI I -.All STRUCTURAL FILL SHALL RE FREE OF ORGANIC MATERIAL, DEBRIS, AND OTHER DELETERIOUS MA1FRW5. THE INDMDUAL PARTICLE SIZE OF THE SOILS USED FOR STRUCTURAL FILL SHALL BE LESS THAN 4 INCHES IN DIAMETER WITH NO MORE TRAIN 5 PERCENT FINES PASSING THE NO. 200 SIEVE, BASED ON THE MINUS 3/4 FRACTION. STRUCTURAL FILL . - . 540ULD BE UNIFORMLY COMPACTED IN .HORIZONTAL UFTS TO AT LEAST 95 PERCENT OF THE • MOGMUM DRY DENSITY (ADD) DETERMINED IN ACCORDANCE WITH ASP D -1557 (MODIFIED P1i00T0R).. UTOITY. TRENCH BACKFILL SHOULD BE COMPACTED TO AT LEAST 90 PERCENT OF THE .610 UP TO WITHIN THE UPPER 2 FEET; THE UPPER 2 FEET SHALL BE COMPACTED TO AT LEAST 95 PERCENT. THE LIFT THICKNESS USED DURING PLACEMENT AND COMPACTION WILL DEPEND ON THE MOISTURE AND GRADATION CHARACTERISTICS OF THE SOIL AND THE TYPE OF EQUIPMENT BEING :MED. LIFT THICKNESS SHOULD NOT EXCEED 8 INCHES IN LOOSE THICKNESS. REFER TO THE - ODIECHNICAL REPORT 'FOR ADD5ONAL WFORMATON. 9. ASPHALT CONCRETE PAVEMENT -- ASPHALT CONCRETE PAVEMENT SHALL BE CUSS 8 ASPHALT -CONCRETE AND SHALL BE IN CONFORMANCE WITH SECTION 5-04 OF THE WSDOT/APWA SiANDNi0S. REFER TO THE PLANS FOR TYPICAL PAVEMENT SECTIONS. 10.'PERVIO011 PAVERS - ALL PERVIOUS PAVES SHALL BE ECO -STONE PAVERS AS MANUFACTURED BY MUTUAL MATERIALS OR EQUAL ALL PERVIOUS PAVERS SHALL BE INSTALLED IN.CONFORMANCE W81 THE MANUFACTURER'S SPEOFICATONS. AN IMPERMEABLE PLATE OR UNER.SHAI1 65 ;INSTALLED VERTICALLY AT ALL INTERSECTIONS OF •PERVIOUS PAVERS AND ASPHALT PAVEMENT UNLESS THE PERVIOUS PAVERS ARE DOWNSLOPE FROM. THE ASPHALT PAVEMENT. "SEE DUNI. SHT" 11. - ALL GRASSCRETE PAVEMENT SHALL BE GRASSPAVE2 PAVERS AS . • MANUFACTURED BY INVISIBLE STRUCTURES INC. OR EQUAL ALL GRASSCRETE PAVERS SHALL BE INSTALLED IN CONFORMANCE WITH THE MANUFACTURER'S SPECIFICATIONS. AN IMPERMEABLE PLATE OR LINER SHALL BE INSTALLED VERTICALLY AT ALL INTERSECTIONS OF GRASSCRETE AND ASPHALT P55145NT UNLESS THE GRASSCRETE 5 DOWNSLOPE FROM THE ASPHALT. SEE DETAIL SHT C6.0. 12 CRUSHED ROCK RASE - CRUSHED ROC( BASE SHALL CONFORM TO THE REQUIREMENTS OF ' SECTION 9- 03.9(3) OF THE WSDOT/APWA STANDARD SPECIFICATIONS. .. 13. CONCRETE WORK - ALL CONCRETE• WORK SHALL CONFORM TO SECTION 6 -02 OF THE • STANDARD SPECIFICATIONS. , • 14. RETAINING WALL ' - RETAINING WALLS SHAW BE KEYSTONE RETAINING WALLS AS MANUFACTURED BY ALLAN BLOCK CORP. OR EQUAL THE KEYSTONE BLOCKS SHALL HAVE A SETBACK-OF 12 DEGREES AND SHALL BE CONSTRUCTED TO WITHSTAND. H -20 WHEEL. LOADING PER TIE MANUFACTURER'S SPECIFICATIONS. ALL ;RETAINING WALLS SHALL BE A MAXIMUM OF 4 FEET IN NIGHT, (BOTTOM OF FOOTING TO TOP OF WALL). RETAINING WALLS SHALL CONFORM -10 SECTION 6 -02.3(22) OF THE WSDOT /APWA STANDARD SPECIFICATIONS. 15. UNSUITABLE SOILS - ORGANIC TOPSOILS' ARE NOT SUITABLE FOR USE AS STRUCTURAL FILL BUT MAY BE USED FOR UNITED DEPTHS • IN NON- STRUCTURAL AREAS OR FOR LANDSCAPING PURPOSES. REFER TO THE GEOTECHNICAL ENGINEERING .REPORT FOR MORE DETAILED - INFORMATION. 15. ADJUST LIDS TO MATCH FINAL GRADES ' - IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO MATCH ALL MANHOLE, CLEAN -OUT AND VAULT UDS TO MATCH FINAL PAVEMENT ELEVATIONS IN AIL ROADWAYS AND SIOEWAIXS. TE MPORARY EROSION AND SEDIMENTATION CONTROL NOTES: 1. SOMA F - ALL REQUIRED SEDIMENTATION /EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO ANY LAND CLEARING' AND /OR OTHER CONSTRUCTION TO INSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE DOWNSTREAM DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT CONTROL FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND /OR "CONSTRUCTION 5 COMPLETED AND POTENTIAL' FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION. MAINTENANCE. REPLACEMENT AND ADOITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. 2. MINIMUM REQUIREMEMS - THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON TAME DRAWINGS ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL COND810NS DICTATE, TIE CONTRACTOR SHOULD ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES NIL BE NECESSARY TO INSURE COMPLETE SILTATION CONTROL ON THE SITE. 3: NEW CONDITION$ - DURING THE COURSE OF CONSTRUCTOR, IT SHALL BE THE OBUGA1ON AND RUPONSIBIUTY OF THE CONTRACTOR TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED ' BY HIS ACTIVITIES AND TO PROVIDE ADDITIONAL FA.CILI1IES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED TO PROTECT ADJACENT PROPERTIES AND WATER OUALTIY OF TIE RECEMNG DRAINAGE SYSTEM. - 4. INSPECTIONS 8Y CONTRACTOR - THE TEMPORARY EROSION CONTROL FACTURES SHALL BE ' .INSPECTED BY THE CONTRACTOR ONLY AND AT THE END OF EVERY RAINFALL AND MAINTAINED AS NECESSARY TO ENSURE THEIR CONTINUED FUNCTIONING UNTIL ALL CONSTRUCTION IS APPROVED AND THE SITE HAS STABIUZED. . 5. Sr I ATION OFD RR a AS - ALL EXPOSED AND UNWORKED COILS SHALL BE STABIUZED WITH MULCHING, GRASS PLANTING, PLASTIC COVERING OR OTHER' APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE EXPOSED SOIL CONDITIONS AND THE TIME OF YEAR IN CUESTON. FROM OCTOBER 1 TO APRIL 30, NO SOILS SHALL REMAIN UNSTABIUZED FOR MORE ` THAN 2 DAYS. FROM MAY 1 TO SEPTEMBER 30, NO SOILS SHALL REMAIN UNSTABNZED FOR MORE THAN 7 DAYS. GRASS SEEDING ALONE WILL' BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL - ' THRU SEPTEMBER INCLUSIVE. SEEDING MAY PROCEED OUTSIDE THE SPECIFIED TIME PERIOD WHENEVER IT IS IN THE INTEREST OF THE CONTRACTOR, BUT MUST BE AUGMENTED WM1 MULCHING, NETTING. OR OTHER TREATMENT AS APPROVED BY THE CITY. CONTRACTOR SHALL PROTECT STOCKPILES AND STEEP CUT & FILL SLOPES IF UNBOWED FOR MORE THAN 12 HOURS AND STOCKPILE ONSIIE. ENOUGH COVER MATERIALS TO COVER ALL DISTURBED .AREAS. BY OCTOBER 8, SEED ALL AREAS THAT WILL REMAIN UNWORKED DURING THE WET SEASON (OCTOBER 1 . THROUGH APRIL 30). AND MULCH ALL SEEDED AREAS. 6. - -• THE CONTRACTOR SHALL CONSTRUCT A TEMPORARY CONSTRUCTION ' ENTRANCE IN CONFORMANCE WITH THE DETAIL ON SHEET C6.0. MATERIAL SHALL BE QUARRY 'SPALLS, 4 INCHES TO 8 001£5•91 SIZE THE ROCK PAD SHALL BE AT LEAST 12 INCHES THICK THE CONSTRUCTION ENTRANCE SHALL BE MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT. CONSTRUCTION EQUIPMENT SHALL BE CLEANED OF ALL DIRT AND DEMIST BEFORE ENTERING THE PUBLIC STREET. 7 FILTER FABRIC I FENCE - FILTER FABRIC - FENCES SHALL BE CONSTRUCTED ALONG THE DOW.SLOPE EDGES OF THff CONSTRUCTION SITE AND SHALL BE MAINTAINED BY .THE CONTRACTOR UNTIL CONSTRUCTION 5 COMPLETE AND THE SIW HAS STABIUZED. REGULAR INSPECTIONS SHALL BE MADE TO ENSURE THAT THE FENCE 5 FUNCTIONING PROPERLY AND ADDITIONAL INSPECTIONS SHALL BE MADE AFTER EACH LARGE RUNOFF PRODUCING STORM AND DURING PROLONGED RAINFALL PERIODS. TRAPPED SEDIMENT SHALL BE REMOVED WHEN IT REACHES APPROXIMATELY ONE THIRD THE HEIGHT OF THE FENCE THE WASHED GRAVEL 8ACIOTLL SHALL BE REPLACED AND THE 411158 1)488)0 CLEANED IF R 5 NONFUNCTIONAL BY EXCESSIVE SILT ACCUMULATION. POSTS SHALL' BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY 6TO THE GROUND A MINIMUM OF 30 INCHES, WHERE POSSIBLE FILTER FABRIC JOINTS SHALL BE MADE ONLY AT A SUPPORT . POST. WITH A 6 INCH MINIMW OVERLAP, 81111.60111 ENDS SECURELY FASTENED TO THE POST.. '8. STORM DRAIN INLET PROTECTION - ANY CATCH BASINS, INLETS, OR TRENCH DRNN5 COLLECTING RUNOFF FROM THE SITE. METIER THEY ARE 014.0R OFF THE SITE, SHALL HAVE STORM DRAIN INLET PROTECTION PER THE CATCH BASIN INSERT DETAIL SHOWN ON SHEET C5.0. INSERTS SHALL BE MAINTAINED BY THE CONTRACTOR UN111 SUCH TIME THAT.ALL CONSTRUCTION 5 APPROVED AND .THE SITE WAS BEEN STABSFZEDD. 9. TRIANGULAR SILT DIKE (GFOTEXTILE ENCASED CHECK DOA() - THE TRIANGULAR SILT DIKE SHALL BE PER SECTION10.3.3.4 OF THE KING COUNTY SURFACE WATER DESIGN MANUAL THE SILT DIKES SHALL BE INSTALLED WITHIN THE TEMPORARY INTERCEPTOR SWALE5 AS SHOWN ON THE PUNS AND AT A- MINIMUM SRACING OF 1 EVERY 20 =FEET ON SLOPES GREATER THAN 105. EACH END OF - THE SILT DIKE SHALL ALL BE BURIED SUCH THAT WATER CANNOT PASS AROUND THE D 51848 10. 611d1 - WHERE STRAW MULCH 5 REQUIRED FOR TEMPORARY EROSION CONTROL. IT - SHALL BE APPLIED AT A MINIMUN. THICKNESS OF 2- 11CHES. 11. maw - 'HERE SEEDING. FOR TEMPORARY EROSION CONTROL 5 REQUIRED. FAST GERMINATING GRASSES "SAL BE APPLIED AT AN APPROPRIATE RATE (EXAMPLE ANNUAL OR ' PERENNIAL RYE APPLIED AT APPROXIMATELY 80 POUNDS. PER ACRE).- 12. j550805EEU - WHERE; HYDROSEEDING FOR TEMPORARY EROSION CONTROL 5 REQUIRED, A SEED - MULCH - FERTILIZER MIXTURE SHALL BE USED AS RECOMMENDED BY THE SUPPLIER AND APPROVED BY THE DEPARTMENT- OF•NATURAL RESOURCES. THE FOLLOWING ARE RECOMMENDED SEED SLURRY PROPORTIONS: - . SEED MW 150 LBS /SORE - 10 -10 -6 FIRTIUZER: 650 L85 /ACRE •'SILVA -FIBRE 11500 CBS/ACRE 13. EMIMARL.,SEXISEILM - TEMPORARY STOCKNLES SHALL BE STABIUZED WITH MULCHING. . GRASS PLANTING,, POLYETHYLENE SHEETING, 08 -0711ER APPROVED MEASURES. THE TOE OF ALL STOCKPILES SHALL HAVE A -FILTER FABRIC. FENCE TO.PROTECT ADJACENT PROPERTIES-NOM SEDIMENTATION AND EROSION AND THE WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. STOCKPILE SIDE SLOPES SOUL NOT 5CEED 2H:1V 5LDPE. 14. SEDIMENT ACCUMULATION - AT NO 1DAE STAN MORE THAN 1'FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN ANY CATCH BASIN. DRAINAGE CHANNELS SHALL BE CLEANED IF SILT ACCUMULATION EXCFID5 ONE QUARTER DEPTH. FILTER FABRIC FENCES AND STRAW BALE BARRIERS 5H4LL1BE CLEANED IF OLT ACCUMULATIONS REACH APPROXIMATELY ONE 11191) THE HEIGHT OF THE FENCE OR HARRIER_ . CLEANING OPERATIONS SHALL NOT ALLOW SEDIMENT LADEN RUNOFF TO. ENTER - THE D00.NSTREAM DRAINAGE 5rblt 4. ACCUMULATED SEDIMENTS SHALL BE DISPOSED OF IN•A:MANNER APPROVED BY THE CITY OF TUKWILA. • • 15. OFF -SITE STREETS - QT' -SAE 54Ntt)J MUST BE KEPT CLEAN AT 'ALL TINES. IF DIRT IS DEPOSITED ON THE PUBLIC STREET SYSTEM, THE SN¢tl SHALL BE IMMEDIATELY CLEANED' WITH POWER SWEEPER OR OTHER EDUEMENT. ALL MUCUS SHALL LEAVE THE SITE BY WAY OF THE CONSTRUCTION DITRACEDE AND SHALL BE CLEWED OF ALL DIRT THAT WOULD BE DEPOSITED ON THE PUBLIC SNit15. I • 16. A - -NI PROPERTIES ADJACENT TO THE PROJECT SITE SILL BE PROTECTED FROM SEDIMENT DEPOSITION AND RUNOFF. • • 17. HUSHING CONCRETE BY- PRODUCTS - DO NOT FLUSH CONCRETE BY- PRODUCTS OR TRUCKS EITHER NEAR OR; INTO NATURAL 08 CONSTRUCTED STORM DRAINAGE SYSTEMS. 1 EXPOSED AGGREGATE 5 FLUSHED INTO THE STORM DRAINAGE SYSTEM, IT COULD MEAN RECLEANING THE ENTIRE DOWNSTREAM SYSTEM, OR POSSIBLY RELAYING THE STORM LINE CONSTRUCTION SEQUENCE: 1. HOLD AN OGRE PRE-CONSTRUCTION MEETING. 2. FLAG'OR FENCE CLEARING LIMOS. 3. INSTALL CATC(•i BASIN PROTECTION, "IF REQUIRED. ' 4. INSTALL PERIMETER PROTECTION (SILT FENCE. BRUSH BARRIER ETC.) 5. INSTALL THE GABON ENERGY: DISSIPATER, CB1 AND THE OVEIAND PIPE AS SHOWN ON 511EETS. C2.0' & C5.0. .I 6. CONSTRUCT SURFACE•WATER CONTROLS (INTERCEPTOR DIKES. PIPE SLOPE DRAINS. ETC). SIMULTANEOUSLY! NTH PROEM' mammon'. SURFACE WATER CONTROLS SHALL DIRECT ALL CONSTRUCTION ISITE RUNOFF' TO THE EROSION CONTROL MEASURES. 7. MAINTAIN TESL MEASURES IN ACCORDANCE NTH CITY STANDARDS AND MANUFACTURER. ANUFACTURER'S RECOMMENDATIONS. 8. RELOCATE SURFACE WATER CONTROLS AND /OR TESL MEASURES, OR INSTALL NEW MEASURES 50 -.THAT AS SITE CONDITIONS 044140E, THE TESL '5 ALWAYS IN ACCORDANCE WITH THE 0TY OF TUKWILA TEMPORARY EROSION AND SEDIMENTATION CONTROL REQUIREMENTS. I 9. COVER ALL AREAS THAT •WON BE UN- WORKED FOR MORE THAN TWO "DAYS DURING THE WET SEASON (OCT. 1i TO APRIL 30) OR SEVEN DAYS DURING .THE DRY SEASON' (MAY 1 TO SEPT. 30) WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING, OR EOUNAENT. 10. STABIUZE ALL AREAS WITHIN SEVEN DAYS OF REACHING FINAL GRADE. 11. SEED. OR SOD ANY AREAS TO REMAIN UN- WORKED FOR MORE THAN 30 DAYS. I ; 12. UPON . COMPLETION OF THE PROJECT, STABIUZE ALL DISTURBED AREAS AND REMOVE TE5C MEASURES AS APPROPRIATE ; RECEIVED 'JUN 01 2001 DE.vcazia.n. 0 a CD D 0 O U I DYWlLS: 08/30/08 .I WATER & SEWER NOTES: gainysmastigszarafficEs - MINDAUM HORIZONTAL SEPARATION OF.POTABLE ' WATER MAINS AND OTHER PARALLEL • UTTLMES SHAT BE FIVE (5) FEET, EXCEPT SEWER UNES'SHALL BE TEN (10) FEET. - MINIMUM VERTICAL SEPARATION OF POTABLE. WATER MAINS AND OTHER UTTLJTIES SHALT BE ONE (1) FOOT, EXCEPT SEWER LINES SHALL BE ONE AND ONE HALF (1.5) FEET. ALL OTHER UTILITIES SHALL HAVE A•MIMMW HORIZONTAL SEPARATION. OF ONE (1) FOOT AND A MINIMUM PREFERRED VERTICAL' SEPARATION OF ONE (1) FOOT. WHERE VERTICAL SEPARATION'S LESS •THAII'SIX (6) INCHES. A FOUR (4) INCH MINIMUM THICKNESS ROT - RESISTANT FOAM PAD SHALL . BE'INSTALLID- BETWEEN THE PIPES. Al CLEARANCES ME MEASURED FROM OUTSIDE EDGE TO OUTSIDE' EDGE. 2..SEMCE CONNECTIONS - ALL SERVICE CONNECTIONS SHALL BE IN CONFORMANCE WITH SECTION 7 -15 OF THE WSDOT/APWA STANDARDS. EXCEPT AS MODIFIED' OR SUPERCEDED BY THE CITY OF TUKWILA 3. 1- 114''II H WATER SETMCF CONNECIKINC - THE 1 -1/4 -INCH WATER SERVICE-CONNECTIONS SHALL CONFORM TO THE REQUIREMENTS OF SECTION 7 -15 OF THE WSDOT/APWA STANDARD SPECIflCARONS.. THE WATER SERVICE. PIPES FROM THE 8 -INCH MAN TO THE METER WILL BE COPPER. PIPE THE WATER SERVICE PIPE FROM THE METER ,70 THE BURRING WILL BE HDPE PIPE . WATER .SERVICE CONNECTIONS SHALL CONFORM TO THE CITY OF TUKWILA STANDARD PUN WS -18. • - 4. COPPER WATER PIPE - COPPER WATER PIPE SHALL 'BE SOFT COPPER TYPE ''K' CONFORMING TONE REQUIREMENTS'OF SECTION 9- 30.6(3)A OF.THE STANDARD SPECIFICATIONS. - 5. HDPE DOMESTIC WATER PIPE - THE: HOPE DOMESTIC WATER PIPE SHAT BE HIGH DENSITY POLYETHYLENE (HOPE) EXTRA • HIGH MOLECULAR WEIGHT PLIXCO PE 3408 INDUSTRIAL PIPE, OR APPROVED EQUAL SDR 9, RATED 200 PS AS SHOWN ON PUNS. FITTINGS SHALL BE MOLDED, AS•RECOMMENDED BY THE MANUFACTURER AND •SILL• BE THE SAME STRENGTH AND STANDARD AS THE PIPE ON WHICH THEY ARE USED.. JOINTS SHALL BE FUSION WELDED IN CONFORMANCE WITH ME • MANUFACTURERS RECOMMENDATIONS. ALL PIPE SHALL BE IN CONFORMANCE WITH AAA C906 'AND SMALL BEAR THE SEAL OF THE NATIONAL SANITATION FOUNDATION (NSF) FOR -POTABLE-WATER PIPE. • • 6. WATER METER - THE WATER METER SHALL BE, 1 -INCH AND OF' THE TYPE SPECIFIED OR PROVIDED•BY THE CRY OF .. TUKWILA. WATER METERS. SHALL BE ISNATLIED, PER CRY.OF TUKWILA STANDARD. PUN WS -18. 7. GATE AND CHECK VALVES, - GATE VALVES SHML•BE RESILIENT. WEDGE. NRS (NON -RISING STEM) V6111 0-RING SEAS. VALVE ENDS SHALL BE MECHANICAL JOINT . OR ANSI-FLANGES. • VALVES SHALL CONFORM TO. AWWA 509 -80. GATE VALVES . • SHALL BE 184 4087 OR APPROVED EQUAL • EXISTING VALVES TO BE OPERATED BY CITY. EMPLOYEES ONLY. ALL' GATE AND '. CHECK VALVES SHALL CONFORM TO SECTION 7-12 OF THE STANDARD SPECIFICATIONS: RESUENT. SEATED VALVES SHALL BE U.S. PIPE MLiimbEAL. WATEROUS, AMERICAN - DARLING,. m KENNEDY. CLOW, M&H, MUELLER, OR AMERICAN FLOW CONTROL SRIES.2500. ALL VALVES SMALL BE EQUIPPED WITH CAST IRON- VALVE BOXES UNLESS• OTHERWISE SOWN ON THE PUNS. 8. TAPPING TEE AND TAPPING VA/VF - TAPPING TEES SHALL BE CAST•IRON OR STAINLESS STEE7. WITH A DUCTILE'IRON OR 'STAINLESS STEEL FIJNGE THE TAPPING VALVE SMALL MEET THE SPECIFICATIONS. OF THE GATE VALVES AND SHALL BE PER CITY OF TUKWILA STANDARD PLAN W5-6. 9. VALVE 60XES - VALVE BOXES SHALL BE ADJUSTABLE TWO -PIECE CAST -IRON' VALVE BOX OF 5 INCHES MINIMUM. INSIDE DIAMETER THE TOP SECTION SHALL BE 18,. INCHES MINIMUM LENGTH WITH A VALVE COVER MARKED 'WATER' AS MANUFACTURED BY RICH MANUFACTURING COMPANY, .SERIES 940, OR EOUAL LIDS SHALL BE SHORT SKIRTED, 3 -INCH MAXIMUM TOTAL.DEPTH .IF TAPERED AND 2 -INCH MAXIMUM TOTAL DEPTH IF STRAIGHT. - .TO. FlR PRO CTON SPRINK ER ercrcu - DCVA ASSEMBLY AND FDC CHECK VALVE.TO BE LOCATED MINN THE BLDG. FIRE SPRINKLER SYSTEM TO BE DESIGNED BY A CERTIFIED FIRE SPRINKLER ENGINEER THE FIRE PROTECTION SPRINKLER SYSTEM' INCLUDING MATERIALS, SIZING AND CONFIGURATION IS SUBJECT TO A CONTRACTOR . PROVIDED DESIGN BY A FIRE- PROTECTION ENGINEER 'THE CONTRACTOR'S BO SHALL REFLECT THE CONDRON5 OF THE FIRE PROTECTION ENGINEER'S DESIGN.. -THE CONTRACTOR SHALL COMPLY WITH ALL NATIONAL FIRE PROTECTION ASSOCIATION • REQUIREMENTS AS SET FORTH BY NFPA 13, ITS AMENDMENTS AND LOCAL REQUIREMENTS. INCLUDING BUT NOT UNITED TO ACQUISITION OF ALL • PERMITS. Al WORK ON UNDERGROUND PORTIONS OF THE FIRE PROTECTION SPRINKLER SYSTEM' BULL BE DONE AND CERTIFIED BY A UCENSED CONTRACTOR WHO HAS ACHIEVED A STATE LEVEL 'U' CERTIFICATION. SUBCONTRACTING OF SUCH "WORK TO PERSONS OR RRM5 - NOT CURRENTLY LICENSED AS A FIRS PROTECTION SPRINKLER SYSTEM CONTRACTOR .15 PROHIBITED UNDER WAC 212 -80. .. . • • 11. FIRE HYDRANT ASSEMBL1 - ALL FIRE HYDRANT ASSEMBLIES• SHALL .BE PER CITY OF - 1UKWILA STANDARD RAN WS -4. . 12. CONCRETE THRUST BLOCKS - .THRUST BLOCKS SHALL' CONFORM TO THE CITY" OF•IUW1LA STANDARD.PLAN WS -1. 13. SIDE SEWER"PIPE - ALL SEWER PIPES SHALCCOMPLY P:OH WSDOT /APWA STANDARD SPEC -RATION SECTON5 7 -17 t.' 7 -18. PIPE TYPE LOCATIONS SILL BE AS SHOWN IN. THE-PLANS. 14. GRAVITY SEWER PIPE ALL GRAVITY SEWER PIPE SHALL BE SIX (6) INCH DIAMETER, POLYVINYLCHLORIDE (PVC) . CONFORMING TO ASIA 3034, SDR 35, OR "APPROVED EQUAL PIPE AND FITTINGS SHALL BE FUPNISHED WITH BELLS AND - SPIGOTS WHICH ME INTEGRAL. WITH THE PIPE WALL. PIPE JOINTS SHALL .BE 11618E ELASTOM:RIC GASKETS CONFORMING TO AS1M D32121 'SOLVENT CEMENT JOINTS SHALL NOT BE USED. SEWER PIPE SHALL BE LAD WITH BELL ENDS FACING IN THE DIRECTION OF THE LAYING. UNLESS OTHERWISE APPROVED BY- THE CRY. . • 15. 5894614 10906 MAN PIPE - THE HOPE SEWER FORCE MAN PIPE FROM THE-PUMP STATIONS TO THE EXISTING SEWER MANHOLE SHALL BE HIGH DENSITY POLYETHYLENE (HOPE) EXTRA HIGH 'MOLECULAR WEIGHT PLE:CO PE 3408 INDUSTRIAL PIPE. OR APPROVED EQUAL .SDR 11, RATED 160 P51 AS SHOWN ON .PLANS. FITTINGS 'SHALL BE MOLDED. AS RECOMMENDED BY THE MANUFACTURER AND SHALL BE THE SINE STRENGTH AND STANDARD AS THE POPE ON WHICH THEY ARE USED. JOINTS ' SMALL BE FUSION' WELDED IN CONFORMANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. ALL SEWER PIPES SHAT CONFORM TO SECTIONS 7 -17. & 7 -18 OF THE WSDOT/APWA- STANDARD SPECIFICATIONS. • 16. 5EWER CLEAN 04115 - SHALL BE'IN CONFORMANCE WITH WSDOT /APWA STANDARDS. SECTION 7 -19. CLEAN OUTS .SHN1. BE . LOCATED AS SHOWN ON THE PLANS AND SHALL .BE THE SAME. DWAETER AS THE PIPE ON WHICH THEY ME INSTALLED. 17. SEWER PUMP STATIONS - THE PUMP STATIONS SHALL BE MODEL 672010 UNITS AS MANUFACTURED BY.ENVIRONMENT'ONE CORPORATION (E/ONE) AS REQUIRED-BY- VAL VUE SEWER DISTRICT. PUMPS SMALL BE'CAPABLE OF RUNNING AT 11' GPM, 40 PS AGAINST -A DYNAMIC HEAD OF 30 FEET. THE CONTRACTOR. SHALL SUBMIT MANUFACTURER'S CUT SHEETS TO 711E OWNER AND SEWER DISTRICT FOR APPROVAL PRIOR TO PURCHASE AND INSTALLATION. THE.CONTRACTOR SHALL PROVIDE THE OWNER Wf1H A COPY OF THE INSTALLATION AND SERVICE MANUAL FOR THE NEW PUMPING EQUIPMENT.- THE PUMP STATION AND ITS ASSOCIATED EQUIPMENT SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS AND PER THE VAL VUE SEWER DISTRICT REQUIREMENTS. • - - . 18. PIPE TRENCH & BEDDING ALL PIPE SHALL BE L9 D'ON A PROPERLY' PREPARED FOUNDATION IN CONFORMANCE WITH THE REQUIREMENTS OF WSDOT /AIWA SPECIFICATION 7- 48.3(1)., THIS SHALL INCLUDE NECESSARY LEVEIJNG OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND•COMPACBON OF REQUIRED BEDDING - MATERIAL TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING BASE. IF THE NAT IE MATERIAL IN THE' BOTTOM OF THE TRENCH MEETS TAE' REQUIREMENTS FOR 'GRAVEL BACKFILL FOR PIPE BEDDING' THE FIRST LIFT OF PIPE BEDDING MAYBE OMITTED, PROVIDED THE MATERIAL IN 711E BOTTOM OF THE TRENCH IS LOOSENED, REGRADED AND COMPACTED TO FORM A-DENSE UNYIEIDING RISE. • 19. POPE TRENCH ac1IF1LL - TRENCH BACKFILL FOR PIPES SHALL BE COMPACTED TO 95-PERCENT MAXIMUM DENSITY PER AST) 0 -698, AND SHALL ' BE IN ACCORDANCE WITH SECTION 7- 08.3(3) OF THE WSDOT /APWA STANDARD SPECIFICATIONS. BACKFILL MATERIAL OF TRENCHES SHALL BE PER SECTION 9- 03:12(3) OF THE WSDOT/APWA STANDARD SPECIFICATIONS. 20. WATER TESTING & DISINFECTING - THE CONTRACTOR .SHALL PROVIDE PLUGS AND TEMPORARY BLOW OFF ASSEMBLIES FOR ' PRESSURE TESTING AND DISINFECTION. TESTING: AND DISINFECTION SHALL BE CONDUCTED IN ACCORDANCE WITH THE REQUIREMENTS OF THE STANDARD' SPECIFICATIONS: . 21. "WATER PIPE COVER - ALL WATER PIPE SHALL HAVE 3' MINIMUM COVER AND 6' MAXIMUM COVER FROM FINISH GRADE, UNLESS OTHERWISE APPROVED BY THE CITY. WATER SERVICE PIPE SHALL HAVE 3' M9HIMUM COVER FROM FINISH GRADE. 22. SEWER TESTING & FLASHING - TESTING & FLUSHING SHALL .CONFORM- TO THE' REQUIREMENTS OF SECTION 7- 17.3(4). WV:MT /APWA • • • 23. 5MNITARY S1DE SEWER PIPE COVER - SIDE SEWER'S SHAD HAVE 2' MINIMUM COVER FROM FINISH GRADE, UNLESS ' OTHERWISE APPROVED BY THE CITY. , 24. CONNECTION TO EXILING SANITARY 5OE SEWER - THE'LOCATION OF THE EXISTING SANITARY SIDE SEWER IS APPROXIMATE. THE CONTRACTOR SHALL VERIFY IT'S LOCATION PRIOR TO CONSTRUCTION. MID IMMEDIATELY BRIM. ALL 'PROBLEMS OR CONVICTS TO THE ATTENTION OF THE ENGINEER. . . . - ; 25. TNSTALUTION PROCEDURES - INSTALL ALL PIPING, FIXTURES, EQUIPMENT, AND ACCESSORIES IN STRICT ACCORDANCE.WITH " THE PLUMBING LAWS, RULES, AND REGULATIONS OF THE STATE OR CITY, WHICHEVER REPRESENTS THE HIGHER STANDARD. AL' WORK SHALL BE APPROVED BY THE STATE. AND CRY PLUMBING .INSPECTORS. . ' 26. RESIQ8AIl0 - ALL 691511140 IMPROVEMENTS REMOVED OR DISTURBED IN THE COURSE OF THE WORK SHALL BE RESTORED TO THEIR ORIGINAL CONDITION. • 27. POWER A COMMUNICATIONS - ALL POWER AND COMMUNICATIONS SERVICES SHALL BE DESIGNED BY OTHERS. POWER AND COMMUNICATIONS DThILA1 DESIGNS AND INSTALLATIONS SHALL . BE PER THE SERVICE PROVIDER AND GOVERNING AGENCIES STANDARDS, SPECIFICATIONS AND REQUIREMENTS. THE POWER:AND COMMUNICATIONS SYSTEMS SHOWN ON 11115 PLAN ME .CONCEPTUAL AND ARE SUBJECT .10 CHANGE BY THE CITY AND SERVICE' PROVIDERS. • 7. oI • APPROX TOP OF SLOPE ti 6 5 es ss SZW, T7. TAP DOM-WS FOR BLDG e, FlFlgg&& t1R000ER 199 (SEE 11ATER & SEWER NOTE 10.) ((SSEE SRI C2) -/r r- 9'x15.5 PATIO. TYP 8 - • '• g . W3 1 4 5EF•10 PIMP 'o . . STA110N PER VAC, 4 �O'A. - WE STANDARDS 1- • LEX HOG NET FENCE IS 1,3' . •EX 6' CHAIN RETA▪ OONG -WALL, TYP. (3' HIaH LIAK i 4�0� 0�s +4 �4; • HOUSE A :UPPER FF■263.00 MAIN FF■253.00 •GARAGE FF- 243.00 SOUTH OF SET REBAR WITH CM UNK FENCE POWER SERVICE,. D80 O COMMUNICATIONS SERVICE. OBO (PHOTO, GABLE. ETC.) HOUSE B • UPPER. FF■251.00 MAIN FF■241.00 . GARAGE FF- 231.00 • • p , !a 1-i/4 S _� Y 5 Ihk 880541 W 126.16' _ M� - �i011 .1155 272 32' 2'x2'x1 -1/4' TEE • �0�, FENCE 19'000 2x1 -1/4' REDUCER r77777777777777) / /4816 / EX GRAVEL '_ DRIVEWAY 080 (PHONE. CABLE ETC.) .. 461.ggeg • IX DOM W5. LOCATION APPROX FIELD VERIFY PRIOR TO CONSTRUCTION 24' EASEMENT FOR INGRESS, EGRESS & UTILITIES 1 -1/2' • DOM w5 POWER SEANCE, D80 (UNDO:, 01ND) SEPTIC PU111 • STATION. PER VAL WE STANDARDS SEATTLE CITY UGHT HAND TOLE, DSO. 1s�y Y' 1� RETAINING WALT. TIP.' (3' NIGH MAX) MAINTAM 1B' VERTICAL SEPARATION - BETWEEN WATER & SEWER AT CROSSING 19 17' DOUGLAS FIR L SERVICE, 080 O i/ EASEMENT FOR INGRESS. EGRESS & UTILITIES 2 55 FM tii - EX. 6' CHESTNUT. • . "\ IX ORIPUNE. IYP IX .21' DOUGLAS .FIR Q Q / i POWER SEANCE - CONNELM0N, D90 (UNDERGROUND AT POLE) . EX" 30' CEDAR • EX 20' DOUGLAS RR EX ECOLOGY BLOCK WALL EX SD PIPE (LOCATION APPROX.) --\ EX EAST EDGE CONCRETE APRON EX CATCH BASIN. (LOCATION APPROX.) SD, TYP (SEE 5HT C2) Ca • EX. 18' DOUGLAS FlR EX SD OUTLET. " .t. (LOCATION ' . APPROX.) . 1 -1/2' DOF1 WS EWE. OF A/ DR \THAW • :1- 1 /Y.D011 7,5 1- 1/2'.0011 W5 69• RR SPIKE IN ASPHALT • N 8•09'02' IX•ASPHALT ,1 WMe P7R Col -8' 01.11/ 5111 11TG EX 8' W 115 -18 • W SOUTH 150TH STREET - W B'x6 TEE,'8' GY, 3&-6• a W, & 113 PER,Co7 STD OWRS WS -1 & 193-8 1 -1/4' WATER SYSTEM BLOW -UP DETAIL SCALE: 1' -10' EX 6' SS, PER SIDE ••SEWER INFO TTOIA VAL WE SEWER DSTRICT Ex SMw• ' RIM- 253.9' .INV- 250.2'(E - >W) EX - 6' SS;'S- 2%'PER 'SIDE SEWER INFO FROM-VAL WE SEWER 015/9101 INSTALL 8'x8'x49' 1YYE AT •DOSI NO r PIPE, IE- 250.43 8'x45 WYE RETAINING WALL, TYP . (3' HIGH LAX) EX FLOWUNE /INFILTRATION TRENCH (LOCATION APPROX,) 2' 55 FM IX 10' HOLLY EX 9' 71011.7 E); 9' HOLLY EX 8' HOLLY EX 8' HOLLY EX '4.\ HOLLY 4'. 140111 X 60' HOLLY - X 19' HOLLY pi HOLLY 4' HOLLY 4' HOLLY EX COMMUNICATIONS UNE (LOCATION APPROXIMATE) rd- REDUCER 6' -55'CO PER Col SID DWG SS -2 RIM - 253.01 J E02511:5 IWNTA N 10' HORIZONTAL - SEPARATION BETWEEN WATER & SEWER, 17P COMMUNICATIONS SERVICE D811 (PHONE. GABLE. ETC-) RETANING WAIL, TYP (3'. HIGH MAX) 1 -1/2'' DOM WS 1 -1/2' DOM WS LWNTNN 18' VERTICAL SEPARATION BETWEEN WATER SEWER AT CROSSING a 0 i DESIGNED: GMM DATE AUG. 17, 2007 10' HOLLY 9' HOLLY 9' HOLL1 12' HOLLY 10' HOLLY a. z 0 .0 0 w w oLL 1- 0 z. EX 8 W EX ASPHALT H 150TH ST TO %4803 A 4805 5LF -6' SS. 5-2% MIN T/C EX EDGE ASPHALT 4A9 I0 (I 1/C IX RR SPIKE IN ASPHALT EX) ASPHALT PK. NAIL TAG #17663- A6'' EAST OF PRODUCED • _ Y CONNECT COMMUNICATIONS UNE 10 IX SERVICE, 080 '(LOCATION APPROX.) • EXPIRES: 08/30/08 ' P901E01 N0. 486 -01 REVISION NO. SHEET .NO. C1 OF1 ...,,, -. no ... 111111 z I I I I 1 ` sHT 3- , ,, � i _ _, __ _____ ____ ____ ___ _......._ ., ,pa.. -„3„--.E,-_______• ___HA,____ I.\ 1 \ \ 240 --- ___.0_ -7-• ---.------ - \ „, ., ____- ..... ___ __-- ___ __ -- -...-_ __ __ ______ ....-- _.., ___ ____ ...._.., ....-- . , . \ ___ 1 ____ ____ - .......„....... \ \\.. / / _ �.� ''‘''..246 N., N� \, I--� -- 246.56. 0k/ - i' i - \ -. i4/ / Z30 P. ' t'36 244.50 '':\.23 _ ' 3'46.00 �� \4' -- 247.25 N LOT 6 \ 250.08 ^ I.. I �/ EX 36" MAPLE \ \ �242� � �t ( 243.44 242.94 - 248_.25 • .. N..., 5 239 1 n I \ -4,4".2-5 � 237.50 2 \� Ffi\ 8.6 �l - 7 ▪ WALL HEIGHT =3' 242.75 • 242.48 ' 42.53 239.48 -(.4-'i' & 11• MAPLt. Q�cjQ -P0ec I '' HEIGHT=3': - (S_ --- -- MAPtC, �� �.� .\ AEG NOME / - i.i \\ EX ) . 1. P�P,Mr_ - t EX 6 2 ' \'6�MAPLE /M.WLE II .1 IX =238.7 236.00\ --"'-f-....7"-- 38515 - 236.00` �Q( =241.9 24060 235.15 EX 8' MAP 235.29 237.60 38.15 SEX =243 1� 240.79 =2t \p / .. \ ✓ / 241 84 • 238.84 P 36` 242.91 9 37.79 237.44`,+ Et 8' 1 MAPLE ' ;731 236-- L� /, \34 ' 281 03 ' MOW • Ex =233.8 - '-. 1 - 2 " - • EX 12 \, IX =234.4 LE =226.9 IX =234.3 \ EX 7• MAPLE 21.2312.5„._ DC 231..4 \8' MAP.. / 1 231.5 1' / 232.25.1 '), " 1 231.75/ 248:33 243.04 242.92 HOUSE A \ \'48.50 UPPER fi; =263.00 243.00 \ MAIN FF =2153.00 . \ 253.00 GARAGE FF= 243.00 \ 242' .92 251.50 `O \ 243.00 245.19 / .,. 243.19 '// EX.21' & 30' MAPLE I \ IX HOG NET FENCE IS 1.3`SOt1TY1 0r SET REBAR TM /CPP.1 �S 50 61 ` �,� 250 \ \\ \\ ?� \\ \2\ \ \\ \Za�1.63 \v.i3X. \.� \ ' �,, 744 \ 2411, \ x ----------\- \ \ \ \41.92 146.16' \, �� \ 239.92 1 = ` �- -T4 68'05'43' W 272:31 j L -EX 6' CHAIN UNK FENCE A 1- 11. / 1456 242.69 239.31 - 241.07 242.53 231.21 \ • \ EX 5" -& f MAP LE 232.75 231.23 235.A7LLL HEIGHT =3 235.61 / 238.07 'HOUSE B/ / / 231.04 236.33 231.05 231.00 236.25 /UPPER FF =251 00 230,90 ; 238.50 MAIN FF =241.00 231.00 241.001 GARAGE FF= 1.00 230.90 LOT 7 231.00 239.50 d .1T1 232.14 \ .0 233.00 • 225.97 228.50 BALL HEIGHT =3' 31.42 230.5M / 227.96 PERVIOUS PAVERS I\ WAIL HEIGHT =2' C 0- SHT 226.15 EX 8', 224.15 - ((21 14' & 27.15 226.72 24.72 1230.49 4% 227-64 66.1' 39.0' 20.0' flu=-6=11=6=6 111 1i SWALE 5% MIN SWALE HOUSE A 8.5' ! UPPER FF =263.00 MAIN FF =253.00 GARAGE FF =243.00 2R MIN % / / / / / / / / / / / / / / / /// HOUSE A UPPER FF =263.00 / MAIN FF =253.00 GARAGE FF =243.00 i 11= 11 =11 -1 - = 11= 11 =11 =11 =11= =u -u= a =ii -u (SHT C3.0) C3. \ . 1 1 �` /` / ADJUST GRADES NEAR CATCH BASIN TO COLLECT SURFACE RUNOFF 226.00 1 \� AU3NG TOP OF WALL: TYP 18 WIDE. 6 H. WALL IHOGHT =3'/ ,231183,. 228.64 ?B -• WALKWAY - 55. 41.1' 14.1' 37.0' a 8 0 z 0 DATE JAN. 15, 2007 224.78 HEIGHT =3' • EX 6' WOOD FENCE .2271.56 I 22.81 EY EDGE 0 GRAVEL, Tl9 75.1' LEGEND: f +44-,7 PROPOSED CONTOURS, COSTING CONTOURS 65.6' RETAINING WALL LAWN HOUSE B 12- 5' UPPER FF =251.00 MAIN FF =241.00 2% GARAGE FF =231.00 J 5_ 20.0' IX GRAVEL DRIVEWAY 3' CLASS 8 ASPHALT CONCRETE 3- CRUSHED SURFACING. GRADE SLOPE ARROW XIX'XX FINISH GRADE. POINTS 10.0 10.0' -FINISH GRADE. TYP CD( GRADE, TYP b SWALE SECTION C -C SCALE 1' = 20' 22.7' 15.5'± GRADE, TYP -PATIO DRIVEWAY • GRASSCRETE DRIVEWAY RETAINING WALL -�� 10' CLASS 8 GRAVEL BASE, (MAY BE REPLACED BY COMPACTED NATIVE MATERIAL IF APPROVED BY THE GEOTECHNICAL ENGINEER) 5 =221 1V MAX; S =2% MIN GRADE BREAK UNE SWALE/FLOWUNE RETAINING WALL ASPHALT PAVEMENT PERVIOUS PAVERS GRASSCRETE SURFACE SECTION F -F: SHARED DRIVEWAY SCALE. 1' = 5' 28.0' HOUSE B UPPER FF=251.00 9.0' 15.0' 5.0' i GARAGE / 5.0 ' 5.0' AGG 15.231.00 5 E 241.0 GAR, • PROTECT IX TREE ROOTS / FROM DAMAGE E) ECOLOG • BLOCK'WALL- 6.1'± °o /_EX GRADE � a 22820 DRIVEWAY RETAINING WALL RETAINING WALL S1VALE SECTION D -D SCALE: r = 10' SECTION E -E SCAL' 1' = 10' - - • IW Im 'I!. 12' CEDAR / EX =228.3 WARP GRADES,NE*R DOSING DRIVEWAY AS NECESSARY TO PROVIDE S11001/1 TRANSRION11 % J1 SEE CONTINUATION SHEET C3.1 227.00', z5' 7.5' 15' 0' 5 10' 20' SCALE: 1' = 10' 1 °PiREs: 08 /30/08 - 1 LL «S w ow z o a 0 JU ra.' V^ V / zz a0 te•^ //w 0 V^� ♦ PROJECT NO. 486 -01 REVISION N0. SHEET N0. C3.0 OF 8 SEE CONTINUATION SHEET C2 / I) a,a,ENT FOR ` 1 I I r dd U18JTIES 04 /\ • 8 s 5 O tN it \\\ • IFERFWW L°6?-11°N. \ \ \ 4 =225.70 / o p0OWN11JR D 1 • ON OURII ` `-7 ) / /j�D.l= 27.00 I !E =2 5.701(E) • - 4E =2 .97I(S) \ L. / / / EX D IO0`Ljj�1�1TLET. I • y &t( ,PP DX.,1 1 4411‘-8 SD. r 1 I / s=o.011 nift4 1. (/ 1, 722 4,I \\ \ \• / ) EY PARKING AREA , _\ 1 I (LOCATION APPROX.) ') fiETA{NING / / W / i• • ) ! l X ECO OCK FALL PE J ' AP�ROx.}- C7! C EDGy1� CONC�I�BTE PP$ONjj EX (TCH f)ASIN, N APF1RO RIM =848.11 IE=225.61 \ 1 Do A✓' ROX ) / RETA{NI w / EX FU LNE INFILTRA ON TRENCH (LOON A'ROIQ) ) \\ \ 1, OOFT 1NFi1TRAllON� `7 III. EX BLDG LOCATION APPROX.) IOU H 10TH ST - c _ E AS tD IX RR SPII(E g819 \ IN A�6PHAI_T \ \. r, 1 D I1� PK NAIL TAG �% /17663 6 . _I -I • UNERPRODU � J y I A ERLY \ JI i j r 1 ci)/ // \ `, NA/ / 9--1 SHARED DRIVEWAY DRAINAGE PLAN SCALE 1" = 20' LEGEND: TYPE 2 CATCH BASIN • w /SOLID COVER • TYPE 1 CATCH BASIN w /FRAME & GRATE Q TYPE 1 CATCH BASIN w /SOUO COVER • • 12" SQUARE CATCH BASIN e D CLEANOUT =. DOWNSPOUT • PIPE FLOW ARROW ■ 6" STORM DRAIN PIPE — 4" OR 6" STORM DRAIN PIPE - - -- 4" PERFORATED D PIPE - GROUND SLOPE DIREC1ONAL. ARROW • RETAINING WALL ▪ SCALE/FLOWUNE • SEE CONTINUATION SHEET C3 I ( / L'T EXI EAST EWE / 1 C NCRETE APRON- (/ l WARP GRADIA9 NEAR E7GSTING j �i 7- DRNEWAY AS NECFSSAW TO j `PROWDE SMOOTH/TRANSITION /� !=229.0 \ -\ \l'. 1 \ 128.85 \ 8.52 1 14 1 EX C10N APPRO ) 21902 \ VII ? �\ 228.,1 �. \\ EX FiOWUNE /INFILTRATIO / ( LOCTION APPROX.) l 1 I IX D PIPE \ ( LOCATION APPROX ) . 11 %. \ � 112 a\ so 0 (L0(ATI0N PRO.) 1 1� jII� i \ i fter / 17 \A/C RAC I / O JI1B ALONG ,WASH OF WALL, 1YP \ 18" WIDE. F)J HIGH 1 i''/ I I 1.1 - I WALL HIGHT 1 I 3'I MAX �. 20.14) ^n.1 2894 _ 1 /W VA \ LEGEND: es ( i I I • 111. I23D.53 �/ • I 1 23)03 k(C I I • DURB ALONG TOE OF SLOPE, TYF/ I 18" WIDE. 6" HIGH 30.35 ' 1• I 231 Si EX RR SPIKE IN ,ASPHALT / (7 150TH TREE 234.06 229r6 \ EX /I / /, ,) l / / / IX =229.1 SHARED DRIVEWAY GRADING PLAN SCALE 1" = 10' . E Y PROPOSED CONTOURS EXISTING CONTOURS GRADE SLOPE ARROW FINISH GRADE POINTS GRADE BREAK UNE SWAI.E /FLOWUNE RETAINING WALL ASPHALT PAVEMENT PERVIOUS PAVERS • GRASSCRETE SURFACE 1 MIRES: 08/30/08 1 a 8 2 8 a DATE: JAN. 15, 2007 PROJECT NO. 486 -01 REVISION NO. SHEET NO C3.1 • OF 8