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SEPA E98-0015 - CITY OF TUKWILA / PUBLIC WORKS - 1998 SMALL DRAINAGE PROJECTS
SMALL DRAINAGE PROJECTS 1998 SLOPE DRAIN - S. 156T" ST. & 47T" AVE. S. CULVERT REPLACEMENT - 34T" AVE S. E98-0015 1 AFFIDAVITOF DISTRIBUTION hereby declare that: ONotice of Public Hearing VDetermination of Non- significance fl Notice of Public Meeting 0 Mitigated Determination of Nonsignificance J Board of Adjustment Agenda O Determination of Significance Packet and Scoping Notice O Board of Appeals Agenda E Notice of Action Packet O Planning Commission Agenda 0 Official Notice Packet fl Short Subdivision Agenda 0 Other Packet O Notice of Application for Other Shoreline Management Permit []Shoreline Management Permit was mailed to each of the following addresses on See ,a;?,e,ht Name of Project9 C 6, •4411-€411C File Number E( v 'CO `5" 7/11fis Signatures-9ee '- .11411-bs- CITY OF TUKWILA DETERMINATION OF NONSIGNIFICANCE (DNS) DESCRIPTION OF PROPOSAL: 1998 SMALL DRAINAGE PROJECTS - S 156TH/47TH SLOPE DRAIN AND 34 AV S CULVERT REPLACEMENT PROPONENT: CITY OF TUKWILA LOCATION OF PROPOSAL.,INCLUDING STREET ADDRESS IF>ANY: ADDRESS: PARCEL NO: SEC/TWN/RNG: 6200-,:SOUTHCENTER :BL ,359700-0232` LEAD AGENCY: '�CITY OF TUKWILA FILE E98-0.015 The City ,ha's d-etermi ned that tithe uropcisa l does not have,e probable significant adverse impact :on,'the environment. An environmental, impact t taternent (ELI'S) is not reouired under RCW 43.24c.030(2) (c) . This detis i cin was made atter review of a completed environmental, checklist and other i nt orrnat i on. n file ='with the lead aaency. FTfii s information is available to- the' public, on ;request. *****k*'•k***********************,*'*****tit'**k* *********sk***_.**kk *k*kkk*•k** This determination is,f.inal ands*ianed,, this ry � day -of 19913. Steve Lancaster. Responsible Offici=a1 Cit_v of Tukwila. (206) 431-3670 6300 Southcenter Boulevard Tukwila. WA 'fi';98188 Copies of the procedures for SEPA appeals ; are available with the Department of Community Deve l opn►ent., To: From: Date: Re: City of Tukwila John W. Rants, Mayor epartment of Community Development Steve Lancaster, Director MEMORANDUM Steve Lancaster Michael Jenkins July 7, 1998 E98-0015, SEPA review of application by City of Tukwila Public Works Department for improvements to 34th Ave S. culvert near S. 128th and replacement of piping at S. 156th and 47th Ave S. Project Description: This SEPA review is for two Public Works projects under the 1998 small drainage project workplan. The two projects include replacing an existing outfall channel with 160 feet of piping near the intersection of S. 156th and 47th Ave S. The other project at 34th Ave S and S. 128th will provide a new conveyance for Riverton Creek by replacing an existing 24 inch culvert with a new culvert crossing designed to meet Washington State Department of Fish and Wildlife fish passage criteria. Agencies with jurisdiction: Washington State Department of Fish and Wildlife (WDOFW) Comments to SEPA checklist: Pg. 2: Hydraulic Project Approval (HPA) is required from Washington Department of Fish and Wildlife for the culvert replacement. Summary of Primary Impacts: • Earth The slope at the S. 156th and 47th Ave S. site is approximately 40% while the slope at the 34th Ave S. culvert replacement is approximately 15%. There is no known history of unstable soils in either area. The projects are being initiated due to erosion of the slope due to the outfall and the S. 156th site while the existing 34th Ave S. culvert is failing due to decay. Delay in repair could result in roadway failure at 34th Ave. S. and S. 128th. Native soils will be used to backfill the S. 156th project. Approximately 400 cubic yards will be imported for backfill and slope stabilization for both projects. Native soils will be used in lieu of imported fill, where possible. One-half acre of clearing and grading will be needed. All erosion control practices will be performed under K.C. Surface Water Manual and City ordinance. 6300 Southcenter Boulevard Suite #100 ° Tukwila, Washington 98188 ° (206) 431-3670 0 Fax (206) 431-3665 E98-0015 SEPA Checklist - City of Tukwila Public Works 1998 Small Drainage Projects July 7, 1998 • • • Air Exhaust from construction vehicles and dust may occur during construction. • Water 34th Ave S. culvert project will occur in year round stream. WDOFW will require project to comply with fish passage requirements. Temporary diversion of Riverton Creek flows will be required, through sandbag dam and portable pump upstream. No discharge of waste will occur into stream. Projects are designed to upgrade existing City drainage system. Project requires an HPA permit from Department of Fisheries. Project is not in a 100 year flood plain. Best Management Practices (BMP's) will be used to prevent sediment transport into drainage and conveyance systems • Plants Project may include the removal of blackberry bushes and grasses, with Hydroseeding in disturbed areas to follow. Any removal of trees or regulated foliage in either project area that occur in a sensitive area may require the approval of a Tree Permit, under TMC 18.54. No known endangered species are on site. • Animals No known threatened species or migration routes nearby. • Energy/Natural Resources Gasoline or other fuels may be used for machinery during construction and semi-annual maintenance. • Environmental Health Some short term noise will be generated during construction time period, lasting between 7:00 a.m. and 6:00 p.m. Refueling of operating equipment will occur away from project areas. No long term noise impacts are anticipated. • Land/Shoreline Use Projects will be generally located in the right-of-way, but surrounding properties are zoned Low Density Residential (LDR) and High Density Residential (HDR). No structures will be demolished. The 34th Ave S. project involves work in and around Riverton Creek. The S. 156th project will occur in a Class 4 slope. All projects must comply with requirements indicated in the Sensitive Area Ordinance (TMC 18.46). E98-0015 • • SEPA Checklist - City of Tukwila Public Works 1998 Small Drainage Projects July 7, 1998 • Housing No housing is proposed nor will development reduce housing. • Aesthetics No structures are proposed. • Light and Glare No impacts. • Recreation No impacts. • Historic/Cultural Preservation No known places or landmarks. • Transportation Project directly impacts Tukwila right-of-way. No new parking will be required nor will new streets or improvements to roads be created. • Public Services Proposed development will not impact or require specific public services. • Utilities No impact Recommendations: DNS > TO: FROM: DATE: SUBJECT: • Micheal Jenkins Phil Fraser MEMORANDUM July 2, 1998 • Installation of the Notice Board at the project site for 1998 Small Drainage Projects - S.156th Street/47th Ave S. Slope Drain and 34th Ave S. Culvert Replacement (E98-0015) As part of the requirement of the projects, two Notice Boards were installed at the project sites on July 1, 1998. Enclosed is the Affidavit of Installation and Posting of Public Information Sign(s) file: p:\pwintern\tuanhuyn\letter\memol.doc CITY OF TUKWILA 6300 Southcenter Boulevard, Tukwila, WA 98188 DEPARTMENT OF COMMUNITY DEVELOPMENT Telephone: (206) 431-3670 AFFIDAVIT OF INSTALLATION, AND POSTING OF PUBLIC INFORMATIO\ SIGNS) State of Washington County of King City of Tukwila ITui pro (1(NI.) (-{- (Print Name) understand that Section 18.104.110 of the Tukwila Municipal Code requires me to post the property no later than fourteen (14) days following the issuance of the Notice of Completeness. I certify that on �ttil2 (Clq v the Public Notice Board(s) in accordance with Section 18.104.110 and other applicable guidelines were posted on the property located at S. )cb*, 1427 /4' A-ve_ TA k ,UTA - so as to be clearly seen from each right-of-way providing primary vehicular access to the property for application file number 6 _ oo(C Afficant (Applicant Signature) SUBSCRIBED AND SWORt to before me this - iw day of ,199 NOTARY P % IC in and for the State of Washington residing at My commission e, ires on 4-05-06 CITY OF TUKWILA 6300 Southcenter Boulevard, Tukwila, WA 98188 DEPARTMENT OF COMMUNITY DEVELOPMENT Telephone: (206) 431-3670 AFFIDAVIT OF IN STALLATIO\ AD POSTING OF PUBLIC F'ORMATION SIG\(S) State of Washington County of King City of Tukwila I TUi4-N f (_' N «- (Print Name) understand that Section 18.104.110 of the Tukwila Municipal Code requires me to post the property no later than fourteen (14) days following the issuance of the Notice of Completeness. I certify that on Tu_i 2- � q� 2 the Public Notice Board(s) in accordance with Section 18.104.110 and other applicable g$idelines were posted on the property located at �', f 28 'S*/ 'i- ' A✓e- S. Tupw1 L, I.(lA- so as to be clearly seen from each right-of-way providing primary vehicular access to the property for application file number ): °l g - 001C Afficant (Applicant Signature) SUBSCRIBED AND SWORN to before me this day ofjjko, , 19 9 NOTARY P,I, : L in and for the State of Washington residing at My commission expires on boft &-09-66 AFFIDAVIT I , 31) D\ ialm EL, Li Notice of Public Hearing [Notice of Public Meeting O Board of Adjustment Agenda Packet fl Board of Appeals Agenda Packet OPlanning Commission Agenda Packet fl Short Subdivision Agenda Packet O Notice of Application for Shoreline Management Permit 0 Shoreline Management Permit was mailed to each of the following addresses on 11)k)C D"'1 018 OF DISTRIBUTION hereby declare that: flDetermination of Non- significance 0 Mitigated Determination of Nonsignificance fl Determination of Significance and Scoping Notice fl Notice of Action Official NoticeofiNVGL0ATiOn 0 Other O Other Name of Project U.j P)W& Lbgnature (' File Number q ' (36 • City of Tukwila John W. Rants, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF APPLICATION DATED JUNE 29, 1998 The following applications have been submitted to the Department of Community Development for review and decision. FILE NUMBERS: APPLICANT: LOCATION: PROPOSAL: OTHER REQUIRED PERMITS: E98-0015 (SEPA Application) City of Tukwila S. 128th St. at 34th Ave S. / S. 156th Ave at 47th Ave S. 1998 City of Tukwila Public Works small drainage projects, to include replacement of a culvert at 34th Ave S. and installation of new slope drain near S. 156th at 47th Ave S. Land Altering Permit HPA (Hydraulic Permit - Army Corps of Engineers) These files are available for review at the Department of Community Development, 6300 Southcenter Blvd., #100, Tukwila, WA. Please call (206) 431-3670 to ensure that the file(s) will be available. OPPORTUNITY FOR PUBLIC COMMENT You can submit comments on this application. You must submit your comments in writing to the Department of Community Development by 5:00 p.m. on July 15, 1998. If you have questions about this proposal contact Michael Jenkins, the Planner in charge of this file. Anyone who submits written comments will become parties of record and will be notified of any decision on this project. APPEALS You may request a copy of any decision or obtain information on your appeal rights by contacting the Department at 431-3670. A decision from the Planning Commission may be appealed to the City Council. The Department will provide you with information on appeals if you are interested. 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 431-3665 June 19, 1998 • City of Tukwila John W. Rants, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF COMPLETE APPLICATION Phil Fraser City of Tukwila Public Works Department 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 RE: SEPA Application for 1998 Small Drainage Projects - S. 156th Street/47th Ave S. Slope Drain and 34th Ave S. Culvert Replacement (E98-0015) Dear Phil: Your SEPA application, on behalf of the City of Tukwila, for the referenced projects has been found to be complete on June 19, 1998 for the purposes of meeting state mandated time • requirements. I have been assigned to this project. The next step is for you to install the Notice Board at each project site within 14 days of the date of this letter. Also, you must obtain laminated copies of the Site Plan and Notice of Application to post on the board, which are available at DCD. After installing the sign, you need to return the signed Affidavit of Posting to the our office and you will receive the Notice of Application and Site Plan. 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. I will be contacting you soon to discuss this project. If you wish to speak to me sooner, feel free to call me at 431-3685. Sincerely, Michael Jenkins Assistant Planner cc: Reviewing City Departments 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 431-3665 • Cty®f Tukwila Department of Community MEMORANDUM TO: Michael Jenkins, Assistant Planner FROM: Gary Schulz, Urban Environmentalist DATE: June 8, 1998 RE: 1998 Small Drainage Project - SEPA E98-0015. U' • John W. Rants, Mayor evelopment Steve Lancaster, Director I have the following comments regarding these projects. Reportedly, it is unlikely they will be completed before 1999. The checklist will need some revision in detail and accuracy as some answers pertain to only one of the projects. Project No. 1- S. 156th Street / 47th Avenue S. Slope Drain: Project No. 1 proposes to convey stormwater and reduce erosion by placing a pipe on a steep slope area and construct a dissipater structure. This is considered to be new construction and not just maintenance. The slope area appears to have been used as a neighborhood dump for mostly shrub and lawn cuttings. There are wetlands present at the toe of slope and in areas that will be disturbed with the new pipe and dissipater structure. The total impact needs to be identified and mitigated per Sensitive Area Ordinance standards as listed in Sections 18.45.080 B and C. Proposed restoration of hydroseeding will need to be supplemented with native plants. The SAO is specific about the replacement of wetland impacts through restoration, enhancement, or creation at a ratio of 1.5 to 1.0. There is a possibility that the proposed design could change to reduce the wetland impact. This would include moving structures and the filling and grading activity upslope and out of the wetland area. Small wetland impacts may be mitigated by restoration/enhancement. New surface water discharges need to meet current clean water standards as mandated by the State. Project No. 2 - 34th Avenue South Culvert Replacement: This project improvement has a fish enhancement design and will reconfigure a portion of Riverton Creek and its banks. Native plantings will be used on disturbed areas as part of the restoration. I have the following comments for this repair project. In addition to willow cuttings, red osier dogwood and some other trees and shrubs could be used for habitat diversity. The current drawings show riprap from the channel bottom up to the top of bank. Based on the 6300 Southcenter Boulevard, Suite #100 ° Tukwila, Washington 98188 0 (206) 431-3670 0 Fax (206) 431-3665 • • • SEPA E98-0015 Memo June 18, 1998 Page 2 gradient and numerous pools, flooding would not be expected to reach the top of bank. The stream bank should be stabilized with native plantings except the toe and channel bottom. The last point is a question about the depth of water below the first weir. Fish will need some depth and quiet water to jump past the first rise. Please let me know if you have questions and feel free to contact me at 431-3662. cc: Steve Lancaster, DCD Director Phil Fraser, Senior Engineer Preliminary Environmental Checklist WAC 197-11-960 Environmental Checklist -6-10.0e91 Purpose of Checklist: The State Environmental Policy Act (SEPA), chapter 43.21 RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An environmental impact statement (EIS) must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help the agency, citizens, and other reviewers identify impacts from the proposal, to possibly reduce or avoid impacts from the proposal, and to help the agency decide whether an EIS is required. ENVIRONMENTAL CHECKLIST A. BACKGROUND 1. Name of Proposed Project: 1998 Small Drainage Projects 2. Name of Applicant: City of Tukwila, Public Works Department 3. Address and phone number of applicant and contact person: 6300 Southcenter Blvd. Tukwila, WA 98188 (206) 433-0179 Contact: Phil Fraser, P.E. 4. Date checklist prepared: May 26, 1998 5. Agency requesting checklist: City of Tukwila 6. Proposed timing or schedule (including phasing, if applicable): It is anticipated that this project will be advertised for construction in June 1998. Construction will begin in July 1998 and should be completed within 90 to 120 calendar days. The exact construction timing or schedule will be determined as the design and permitting processes are finalized and are dependent on available budget. RECEIVED CITY OF TUKWILA 1 MAY 2 7 1998 PERMIT CENTER • • 7. Plans for future additions, expansion or further activity related to or connected with this proposal: No future expansion is planned 8. Environmental information that has been prepared, or will be prepared, directly related to this proposal: None known. 9. Applications that are pending for governmental approval of other proposals directly affecting the property covered by the proposal: None known. 10. List of governmental approvals or permits that will be needed for the proposal: The following permits are anticipated: Hydraulic Project Approval (HPA), Washington Department of Fish and Wildlife; (HPA applies to project no. 2 only) 11. Brief, complete description of the proposal, including the proposed uses and the size of the project and site: This proposal consists of two (2) separate small drainage projects which have been identified by citizen complaints and City of Tukwila public works and maintenance staff as highest priority based on maintenance needs, public nuisance, and potential damage to adjacent properties. The projects are briefly described below and identified on the attached Plans. Project no. 1 — S. 156'h Street / 47th Avenue S Slope Drain: Replace existing overland outfall channel with approximately 160 feet of pipe to reduce the risk of erosion. Project no. 2 — 34th Avenue South Culvert Replacement: Replace an existing 24 -inch CMP culvert in poor structural condition with a new culvert crossing. Extend the east side road shoulder 5' to attain 2:1 side slopes to provide a more stable shoulder. The Washington Department of Fish and Wildlife has indicated that the new culvert will need to meet fish passage criteria. The culvert crossing provides conveyance for Riverton Creek across 34th Avenue South. A copy of the preliminary plans are attached for review. 12. Location of the proposal, including the street address, if any, and section, township and range, if known; a legal description, site plan, vicinity map and topographic map, if reasonably available: The project sites are located within the City of Tukwila at the street locations noted above. A location map is attached. 2 • • B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (underline one): Flat, rolling, hilly, steep slopes, mountainous, other b. What is the steepest slope on the site (approximate slope percentage)? 40% (site no. 1), Site no. 2 is generally less than 15% - 20%. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? Specify the classification of agricultural soils and note any prime farmland. Glacial till soils. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. There are no known history of unstable soils; however, the following projects are intended to proactively stabilize slopes which are of concern to City maintenance crews: Project no. 1 — South 156th Street / 47th Avenue South Storm: City staff is concerned that the existing outfall channel is eroding the steep slope in this area. Project no. 2 — 34th Avenue South culvert replacement: The existing CMP culvert is rusted and failing. There is concern that the failed pipe and high creek flows could cause a failure to roadway embankment. e. Describe the purpose, type and approximate quantities of any filling or grading proposed. Indicate source of fill. Trench excavation and backfill will generally match existing grades. Project no. 1 will utilize native soils as backfill. Project no. 2 will require additional fill to widen th4e and meet fish passage requirements. We have budgeted approximately 100 cubic yards of crushed surfacing and 300 cubic yards of gravel borrow (imported from a WSDOT certified source) for both projects. It is estimated that 150 cubic yards will be used as backfill material and 250 cubic yards as slope stabilization fill. Native soils will be used in lieu of imported trench backfill where determined suitable by the inspector. f. Could erosion occur as a result of clearing, construction or use? If so, generally describe. Yes, approximately 0.5 acres will be cleared and graded for this project. Construction will be completed during the dry, late summer season using appropriate erosion control best management practices and minimizing disturbed areas. 3 g. • • About what percentage of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? No new impervious surface is proposed. h. Proposed measures to reduce or control erosion or other impacts to the earth, if any. Erosion and sedimentation will be controlled through the implementation of Best Management Practices (BMPs) as described in the King County Surface Water Design Manual, and in accordance with City of Tukwila requirements. Disturbed areas will be restored with hydroseed following construction. 2. AIR a. What types of emissions to the air would result from the proposal (i.e. dust. Automobile, odors, industrial wood smoke) during construction and when the project is completed? Generally describe and give approximate quantities, if known. Minor dust and internal combustion engine emissions will be in the air only during construction b. Are there any off-site sources of emissions or odors that may affect your proposal? If so, generally describe. No. c. Proposed measures to reduce or control emissions or other impacts to the air, if any: Best management practices will be implemented during construction activities to reduce and control dust and air emissions. These practices may include covering soil stockpiles, sweeping or washing paved surfaces, minimizing exposed areas, and using construction machinery equipped with standard mufflers. 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. Project no. 2 is along Riverton Creek, which flows to the Duwamish River. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. Yes, Project no. 2 is within the described water, see attached plans. 4 • • 3) Estimate the amount of dredge and fill material that would be removed from or placed in surface water or wetlands, and indicate the area of the site that would be affected. Indicate the source of fill material. WDOFW has indicated that the 34th Avenue culvert replacement (project no. 2) will need to comply with fish passage requirements. This will require installation of a series of weirs downstream of the new culvert. Approximately 100 cubic yards of fill will be placed to construct these weirs in accordance with Fisheries requirements. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose and approximate quantities, if known. Project no. 2 will require temporary diversion of Riverton creek flows around the project area. Late summer flows are minor and will be accomplished by means of a sandbag dam and portable centrifugal pump placed upstream of the culvert replacement. 5) Does the proposal lie within a 100 -year flood plain? If so, note location on the site plan. Not known. 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. The proposal does not involve the discharge of waste materials to surface waters. 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. No. 2) Describe any waste material that will be discharged into the ground from septic tanks or other sources (e. g., domestic sewage, industrial, agricultural, etc.). Describe the general size of the system, the number of such systems, the number of houses to be served, or the number of animals or humans the system(s) are expected to serve. Does not apply. c. Water Runoff (including storm water) 1) Describe the source of runoff (including storm water) and method(s) of collection and disposal, if any (include quantities, if known). Will this runoff water be discharged or flow into surface waters or ground water? If so, describe. All projects are maintenance repairs and upgrades of the existing City of Tukwila drainage system. No modifications to current collection and disposal of runoff will occur. 5 • • 2) Could waste materials or toxic materials enter ground or surface waters during or as a result of this proposal? If yes, generally describe. No. d. Proposed measures to reduce or control surface, ground and runoff water impacts, if any: Appropriate BMPs will be installed to prevent sediment transport into existing drainage courses and conveyance systems. 4. PLANTS a. Underline types of vegetation found on the site: x_ deciduous trees: x_ conifer trees: x_ shrubs: wet soil plants: water plants: x_ other types of vegetation: alder, maple, birch, black cottonwood, other fir, cedar, pine, other blackberry, salmonberry, vine maple, other buttercup, rushes, sedge, grasses, other water lily, milfoil, eelgrass, other grasses, lawn, ivy. b. What kind and amount of vegetation will be removed or altered? Approximately 0.5 acres will be disturbed by construction. Vegetation to be removed consists primarily of non-native grass species and blackberry. c. List threatened or endangered species or critical habitat known to be on or near the site: No threatened or endangered species are known to occur 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: All disturbed areas will be hydroseeded following construction. 5. ANIMALS a. Underline any birds and animals that have been observed on or near the site, or are known to be on or near the site: x_ invertebrates: x_ fish: (no.2) amphibians: reptiles: x_ birds: x mammals: insects, mollusks, other salmon, trout, bass, herring, shellfish, other frogs, salamanders, toads, other snakes, lizards, turtles, other songbirds, owls, hawks, eagles, heron, other deer, bear, elk, beaver, rabbits, rodents, other 6 • • b. List any threatened or endangered species or critical habitat known to be on or near the site. There are no threatened or endangered species known. c. Is the site part of a migration route? If so, describe. No. d. Proposed measures to preserve or enhance wildlife, if any. N/A 6. ENERGY AND NATURAL RESOURCES a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. The completed project will not require any energy. Small amounts of gasoline and/or diesel fuels will be used in equipment during semi-annual cleaning of the project. . b. Would the project affect the use (potential or actual) of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans for this proposal? List any other proposed measures to reduce or control energy impacts, if any. None. 7. ENVIRONMENTAL HEALTH a. Are there any environmental health hazards, including exposure to toxic chemicals or hazardous wastes, risk of explosion or fire that could occur as a result of this proposal? If so, describe. Yes, accidental fuel or oil spills from the heavy equipment could occur during construction. 1) Describe special emergency services that might be required. None anticipated. 2) Proposed measures to reduce or control environmental health hazards, if any: Repairs and refueling of construction equipment would be done away from the water courses and storm coveyance facilities. 7 • • b. Noise 1) What types of noise exist in the area which may affect the project (e.g., traffic, heavy equipment, operation, industrial, other)? None. 2) What types and levels of noise would be created by, or associated with the project, on a short-term or a long-term basis (for example, traffic, construction, operation, other)? State what hours noise would come from the site. Short term noise impacts from construction operations are anticipated during work.hours (typically 7:00 AM to 6:00 PM) for the duration of construction. No long-term impacts are anticipated. 3) Proposed measures to reduce or control noise impacts, if any: Construction equipment will be equipped with mufflers and all operations will be in accordance with City of Tukwila noise ordinances. 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? Projects are within City right of way in residential neighborhoods. b. Has the site been used for agriculture? If so, describe. No. c. Describe any structures on the site. None. d. Will any structures be demolished? If so, what? No. e. What is the current zoning classification of the site? City right of way. f. What is the current comprehensive plan designation of the site? Not known. g. What is the current shoreline master program designation of the site, if any? N/A 8 • h. Has any part of the site been classified as an environmentally sensitive area? If so, specify. Not known. i. Approximately how many people would reside or work in the completed project? None. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any. None. I. Proposed measures to ensure the project is compatible with existing and projected land uses and plans in the area. N/A 9. HOUSING a. Approximately how many housing units would the project provide, if any? Indicate whether high, middle or low income housing. None. b. Approximately how many housing units would be eliminated, if any? Indicate whether high, middle or low income housing. None. c. Proposed measures to reduce or control housing impacts, if any: None. 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? No structures are proposed. b. What views in the immediate vicinity would be altered or obstructed? None. 9 c. Proposed measures to reduce or control aesthetic impacts, if any: N/A 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light or glare from the finished project be a safety hazard or interfere with. views? No. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any. None. 12. RECREATION a. What designated or informal recreational opportunities are in the immediate vicinity? None known. b. Would the project displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation including any recreational opportunities to be provided by the project or applicant. None. 13. HISTORIC AND CULTURAL PRESERVATION a. Are there any sites, structures or objects listed on, or proposed for national, state or local preservation registers known to be on or near to the site? If so, generally describe. None known. 10 • • b. Generally describe any landmarks or evidence of historical, archaeological, scientific or cultural artifacts of importance known to be on or near the site. None known. c. Proposed measures to reduce or control impacts, if any. N/A 14. TRANSPORTATION a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on plans, if any. The sites are all on City of Tukwila public roadways. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? No. c. How many parking spaces would the completed project have? How many would the project eliminate? None. d. Will the proposal require any new roads, streets or improvements to existing roads or streets (not including driveways)? If so, generally describe, and indicate whether public or private. No. e. Will the project use (or be in the immediate vicinity of) water, rail or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated as a result of the project? Indicate when peak traffic would occur, if known. N/A g. Proposed measures to reduce or control transportation impacts, if any. N/A 11 • • 15. PUBLIC SERVICES a. Would the project result in an increased need for public services (e.g., fire and police protection, health care, schools, other)? If so, generally describe. No. b. Proposed measures to reduce or control direct impacts on public services, if any. None. 16. UTILITIES a. Underline utilities currently available at the site: electricity, natural gas, water telephone, refuse service, sanitary sewer, septic system, other. N/A b. What utility service will be needed by the project? Who (which utility) will provide the service, and what utility construction will be required on or in the immediate vicinity of the site? None. C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decisi Signature: Date submitted: si2-7(S Y The following checked items are included with the Checklist: _x Vicinity Map _x_ Project Plans KPG, Inc. 805SEPA2.doc 5/27/98 12 • • INTEROFFICE MEMORANDUM TO: Brian Shelton FR: Phil Fraser DATE: May 6, 1998 RE: 1998 Annual Neighborhood Drainage Projects and West Valley Highway Drainage Extension - 50% Review and Budget Analysis ISSUE: Provide Status Report for 50% Plan review for 1998 Annual Neighborhood Drainage Projects and West Valley Highway Drain Extension Project. Early this year Public Works staff reviewed KPG's consultant contract with the Utilities Committee to carry out the PS&E of projects #2 through #9 from the Annual Drain Projects (see attached 1998 - 1999 Small Drainage Projects list) and also the West Valley Highway Drain Extension. The Utilities Committee was informed Public Works will be coming back later with a separate consultant design project for the drainage for Interurban Avenue Project (Project #1 on the attached '98 Annual Drainage Projects listing ) with a design fee of $20,000. Also, the Committee was informed that although the grouping of projects slated for design exceeded budgeted monies available for construction (about $282,500), two or more projects may drop out if the HPA permit and/or/R/W issues are not resolved in time for '98 construction. And, through design we would determine how many projects we could put out to bid, as additive alternates or, defer to '99 construction. Finally, I said this aggressive approach to design was to address past Utility Committee's requests to "put as many projects out as was possible". At my April 25, 1998, meeting with the consultant to conduct the 50% review for the subject projects the following was noted: With a total budget of $360,000 minus the consultant's design fee of $57,500 for projects #2 - #9 and the West Valley Highway Drain Extension; and, also, minus the $20,000 design fee for Interurban Avenue South System Drainage design scheduled for '98 --- $282,500 of the budget is project to be available for construction this year. It is assumed that almost all of these monies will go toward construction (in-house construction, engineering/administration assumed). Attached you will find the 50% construction costs presented by our consultant, KPG who estimates $392,961 (includes 10% contingency fee + 8.6% WSST) construction costs vs. $282,500 available budget. From our review comments passed off at our April 25th meeting, I anticipate that between $10,000 and $20,000 may be shaved off the consultant's estimate by the 90% review. • • 1998 Drainage Projects 50% Review and Budget Analysis Page 2 As of April 25, 1998, the consultant assured me that he is within his budget for all designs and on schedule As the State Fish and Wildlife HPA, the environmental process and R/W acquisitions have not carried out yet, it's premature to recommend a final listing of projects to bid, bid as additive alternates, or defer to the '99 construction season. Therefore, I recommend that the consultant proceed to the 90% phase. Once the 90% review is complete along with R/W, HPA and environmental, we can reassess our budget and make a final project listing recommendation to the Mayor and Council (via UC) to construct, additive alternate bid or defer to '99. Also, Ross Heller informed me today that KPG is farther ahead with the overlay projects. Since they do not have environmental to go through Ross expects to be ready for ad in June '98. Next week I will request DCD to determine to which drainage projects are exempt from environmental. One option to consider: those drainage projects exempt from environmental, HPA and have no R/W issues could go ahead with the overlay projects to a June '98 advertisement. Attachment: '98 Small Drainage Program 50% Engineer's Estimate `98-99 Small Drainage Projects Priority Ranking cf: Ross Heller Q:\windows\cathy\98drain.inf 1998-1999 SMALL DRAINAGE PROJECTS 1-27-98 Priority . .84nialig.: : -.•., •.:-.: • '.... -.1'0 lamStatement• .....:..;:..i.: :::::::.::•;: :' ..;:: .:. ... .:* :::: ;i: ::iii..:.:..., ..: _ ••••• • - r., - • • - - - . ......... . ...... .•:•:• • rOjOct 1..m.stription .. • :i..: ' ::-...::..... : . .:::.:::...:.:.::. .. :...... . :.:: ,::::: ::::: .:: ::::i i:: -. :::...:ii:.::::::.,.. - : ... - :::::..- : -•:Cost • ::;:ii:::::: :: .: :.i:.. 1 Interurban Ave S from S 143rd St to S 139th St (north end of Metro Pump Station). Lack of drainage causes local flooding on Interurban Ave S. New curb/gutter/sidewalk (approx. 2,400 l/f.) is scheduled for 1999. Associated drains are needed. Retrofit approximately 21 existing catch basins on west side of Interurban Ave S, from S 143rd P1 to S 139th St + (approx.) 21 inlets and stubs to accommodate relocated curb and gutter. Provide drainage analysis/survey and PS & E of east side drainage in Interurban Ave S at S 143rd St to alleviate localized flooding. Construction $112,000 Engineering $ 28,000 Total $140,000 2 Riverton Creek crosses 34th Ave S via a 24" diameter CMP culvert pipe (S 128th St). Portions of pipe are rusted out: some sections squashed/out of round. Riverton Creek provides a year round flow through culvert. Project delayed to 1998 construction due to State Fish & Wildlife requirements to add fish ladder to make culvert fish passable. Replace existing culvert with approximately 70 I.f. of reinforced concrete pipe; and extend east side road shoulder 5' to attain 2:1 side slope for stable roadway shoulder. Add fish ladder to comply with State Fish & Wildlife. . Construction $60,000 Engineering $18.000 Total $78,000 3 Storm manhole on east side of Macadam Rd, just west of Southcenter Blvd, during peak storm events, drainage blows out of existing storm manhole which is undersized and unable to dissipate high flow energy from steep pipe up hill. 20 I.f. section of 12" diameter pipe upstream plugged in 1997. Causing erosion to steep hillside protecting trail stairs and City water transmission main from reservoir to CBD. Reconstruct pipe (or liner) 12" diameter from hilltop to provide energy dissipater manhole at base (with post) and 25 I.f. of 18 - 21" diameter pipe to existing 48" diameter manhole in Macadam. Construction $40,000 Engineering $13,000 Total $53,000 . 4 Existing 12" drain crossing 33rd Ave S causes backup during storm events. Pipe under 33rd Ave S needs replacement. Can't be maintained in current condition. -Pee 0 AINAI l'a 1— Provide approximately 50 I.f. of 12" pipe replacing broken/plugged pipe at 33rd Ave S crossing. Design to include routing alternative redirect drainage on west side of 33rd Ave S to existing drain to the north. Construction $11,000 Engineering $ 4,000 Total $15,000 ...- "...:. ,.: i ..... •• 13.04/04 .. iiii-:f:ohiSiii&rii:::*:::;:.:::: .. .....: "':' ..... ..•,..:•., :•:•:::,:. ...:.:.:,....„ ... ::::. : i:§.::::i:::i::.i::.. gr $03 Joi i :;....ui.ii:i:i.ii:ii:i aiqi;l1ri!T:•ii. -an • • .. . .. ... ., 5 S 132nd St, from 37th Ave S to Pacific Hwy S during Underground existing ditch in S 132nd St with Construction $15,000 peak storm events. High flows crossing Pacific Highway can't be contained in existing ditch system. Surface approximately 110 I.f. of 18" diameter pipe. Include three Type 2 manholes. Repave one driveway Engineering $ 5,000 water overflows ditch washing out driveways and frontage yards. Total $20,000 6 37th Ave S, existing 300 I.f. open ditch between S 132nd Underground 300 1.f. of existing ditch on west side of Construction $25,000 & S 130th St overflows across 37th Ave S roadway, flooding single family properties on north side of S 37th Ave S with 18" diameter pipe, include 2 Type L catch basins with inlet grates to pick up local surface Engineering $ 8,000 130th St during major storm events. flows. Total $33,000 7 A portion of surface water drainage from S 124th St Provide 650 1.f. of 12" diameter pipe in 43rd Ave S Construction $50,000 between 42nd Ave S & 44th Ave S drains to private properties causing local property flooding during heavy from S 122nd St to S 124th St. Provide approxi- mately 500 I.f. of thickened edge/extruded curb on Engineering $14,000 storm events. ?cr7'\\4 14- a r--P---d-r" lis- ,-,ktnesay_ north edge of S 124th St pavement to connect surface drainage and convey to 43rd Ave S. Provide six catch basins. Total $64,000 8 Lack of formal drainage system and ponding of water on Extend existing 12" diameter drain on south side S Construction $50,000 S 156th/ 158th St between 44th Ave S/ 47th Ave S causes local flooding of street and adjacent properties. 156th St for about 300 1.f. and add 3 catch basins to reduce local ponding; on 47th Ave S add 2, Type 1 Engineering $13,500 catch basins and 80 I.f. of 12" pipe. Total $63,500 9 Flooding occurs on 40th Ave S in the vicinity of 11801 Provide storm extension of 40th Ave S to 11801 40th Construction $49,500 40th Ave S and private properties (single family residence) due to lack of formal drainage system in 40th Ave S (S 119th Ave and 40th Ave S): tie into existing 12" storm line, add approximately 400 I.f. of 12" pipe Engineering $18,000 Ave S (refer to RFA 92-030). In '91 flood a significant portion of some properties were under water. and 6, Type 1 catch basins. Also provide properties with stubs out of catch basins. Total $67,500 • 10 Flooding at 56th Ave S/S 130th St intersection due to Rehabilitate existing 18" diameter line (to Duwamish City crews anticipate lack of drainage pipe/outfall to river. River outfall) in 56th Ave S at 130th St (just west of completing this project BNRR) tracks. by end of 1998 through . own work force. ...... 11 • Over several years, residents' complaints offlooding driveways and back yards due to broken drains/lack of drainage in private alley between 58th and 59th Ave S, from Tukwila Elementary School playground (S 149th St) to S 147tb St. Sixteen single-family properties drain to this alley, currently used for both drainage and access. RebuUdeziudngdnuiouystuuinuUey: provide 670 l.f. of 12" dram in alley plus auxiliary line to pick drainage from east side properties. Finaily, paving of alley is included in estimate to collect runoff. (Alley R/W not dedicated at time oforiginal development would be condition of easement to proceed with public drain (accosu)project.) Construction $120000 Engineering $ 35'800 Total $155080 12 East bank Green River,just south of Strander Bridge (Steak and Ale Restaurant property): riverbank sloughout undermined portion of large tree; future river rise and drawdown may cause tree to fall into river and lose portion of private parking lot. Riverbank slough repair: provide keyed riprap from toe to OHWM; vegetated geogrid above OHWM to stabilize riverbank/stop further erosion. (Question on whose responsibility to fix.) ^ Construction $40,000 Engineering $12'000 Total $52,000 13 Street drainage in 56th Ave S from S 139tb St to 400 Lf. to the south drains into and floods private properties. 56th Ave S slopes to the east and the undersized drains on the west side of 56th Ave S are ineffective to collect Street drainage. Also, 6" diameter dram pipe in S 139ib ' between 56th Ave and 56th Place does not have capacity to carry street drainage. Provide 230 Lf. 12" RCP pipe in 139th from existing catch basin at 56th Place/S 139th to existing catch basin on west side 56th Ave S/3 139th (include 4 new catch basins and 1 inlet structure). AIso provide short ditch at SE corner 5 139th St/56th Ave S and 400 l.f. ofasphalt berm along east side ofS 139th St from intersection. Construction $38,800 Engineering $ 9'080 Total $47,000 14 Lack of drainage system on south side ofS l4lstStjust west of42iid Ave S causes frequent flooding ofstreet. OverwuahioguyS l4lst Stonto private property to the north. Provide approxirnately 200 I.f. of 12" diaiueter pipe, including 3 Type 1 catch basins in 5 141st St to existing dram in 42iid Ave S. Construction $22,000 Engineering $ 5,000 Total $27,000 15 A portion of 50th P| S (Steel Hill Bridge) surface water flows onto private properties (including 12562 50tb P| S) causing flooding of properties during storm events due to lack of formal drain system. Check status ofBNRR Inter -Modal Access project which can affect this project. Provide 200 Lf.ofextruded curb along north side ot 50th M S and catch basin along with approximately 35 I.f. 12" diameter storm under 5Oth P1 S and approximately 100 Lf. ofuvvu|eutKodiguFarm to convey local ponding to Duvvumuiuh. Construction $ 8,000 Engineering $ 3.000 Total $11,000 CITY OF TUKWILA DEPARTMENT OF PUBLIC WORKS • • Site no. 1 Site no.'3 Macadam Rd Slope- :ite_'da Site -no. 5 33rd Ave_S� S 132nd St Site no. 6i 37th Ave S • ►b,Zc u�c Site no. 7 • 43rd Ave S She o8 5;=1156;fh4/4r7.:th S 'N Li (tv t✓� KAPG Site no. 9 40th Ave S 1995 Small urainage rrvgrdlu - Pk/ /o C I 19 MC= I J c=auniaac -- -- -, - , - „ _- ` Tota{ .� COS - _ - ' _ _...._ �'otal,,. A-' 'Cost- _�, ._ ._.. „ - � `""'Fotal..�, Y � ;���u�C'ost;� =;Gl vlhTatai. _�. .�� ,,,,.15':... os. COSt.:'� -,� -��.� _._ ..... _._... _ _ .. .. ,�._ ., . .. �. my . otal. �a Total .,F. '".L_..p«.., -�- :,.. .�� ��.�,�-.r'� C'ost' _ _ . .sF , _ . .O Dial . ;Y %•..q _ �- _ ..u.,_ ...cit.* �� � ,.. I- TOW; :.!+ .o-?.: ,;, �z: os sir,-.;��',�.a,..,.r-C _, t� ":� ' � 'Total. ;� ^"LTyc;l:+�l�e,> - _�•_-- Cost amu....... � is,, <.� �..:,::� .-v: =�Y_ ,� Total_ u. _sr^`+v�^ E _ si . �:: .�- � - . rC'ost�.E - .,.. .. .... 3 .n , . ia' ...}, ��.. ..,Y _ _... � ..y.. -� ____ _ z �-� k ,---.§‹' '_- ,. � -„ � �.� as �.,-r:Cos N. -� � - It `: v,';.'.'-g'4'."--.�_:Quart n. __---.... _-� - ._, �� , _ _........ 1 $ 4,000 1 $ 6,000 1 $ 4,000 1 $ 2,000 $ 2,500 1 $ 2,000 1 $ 5,000 $ - ' 1 $ 5,000 1 Mobilization 1 LS $30,500 $ 30,500 2 Temporary Water Pollution / Erosion Control 1 FA $10,000 $ 10,000 1 $ 1,000 $- $- 1 1 1 $ 2,500 $ 2,500 $ 2,000 1 $ 1,500 $ - 1 $ 3,000 1 $ 500 1 $ 1,500 1 $ 1,000 $ 500 $ 1,500 $ 1,000 1 1 1 $ 500 $ 2,000 $ 2,000 1 $ 2,500 $ - 1 $ 3,000 $ - $ - $ - 1 $ 1,000 3 Water Bypass System 1 LS $7,500 $ 7,500 $ - Resolution of Utility Conflicts 1 FA -$14,000 $ 14,000 1 $ 2 000 3 4 Traffic Control Labor - 436 HR $26 $ 11,336 96 $ 2,496 40 $ 1,040 20 $ 520 40 $ 1,040 1 $ 500 40 $ 1,040 1 $ 1,000 60 1 $ 1,560 $ 1,000 80 $ 2,080 1 $ 250 $ - $ - 60 $ 1,560 1 $ 250 $- 170 $ 425 1 45 $ 1,000 $ 113 1 $ 1,000 5 Clearing and Grubbing 1 LS 55,000 $ 5,000 Asphalt / Cement Concrete Sawcut 495 LF 53 $ 1,238 10 $ 25 50 $ 125 40 $ 100 $ - $ - $ - 180 $ 450 6 Removing Cement Concrete Sidewalk 315 SY $12 $ 3,780 175 $ 2,100 $ - 10 $ 120 $ - $ - $ - $ - $ - 130 $ 1,560 7 8 Pavement Removal 117 SY $12 $ 1,404 40 $ 480 12 $ 144 $ - 10 $ 120 10 $ 120 $ - $ - $ - 45 $ 540 230 $ 920 9 Remove Extruded Curb 230 LF $4 $ 920 9 Gravel Borrow including Haul 525 Ton $16 $ 8,400 10 Construction Geotextile Fabric 70 SY $2 $ 140 $ - 450 $ 7,200 75 $ 1,200 $ - $ - $ - $ - $ - $ - $ - 70 $ 140 $ - $ - $ - $ - $ - $ - $ - 11 Shoring or Extra Excavation, Class B 95 SF $1 $ 95 $ -. 95 $ • 95 $ - $ - $ - $ - $ - $ - $ - 12 Crushed Surfacing Top Course 1019 Ton $30 $ 30,570 50 $ 1,500 85 $ 6,375 175 $ 4,375 178 $ 4,450 160 5 $ 4,800 $ 375 $ - 3 $ 90 70 $ 2,100 153 $ 4,590 63 $ 1,890 275 $ 8,250 $ - 245 $ 7,350 13 Asphalt Concrete Pavement, Class B 119 Ton $75 $ 8,925 1 $ 75 $ - 2 $ 150 $ - 10 $ 750 $ - 16 $ 1,200 _ • 13 Planing Bituminous Pavement 175 SY $25 $ • 4,375 14 Cement Concrete Sidewalk 333 SY $25 $ 8,325 '0 $ 250 $ - $ -15 $ 1 375 $ - $ - 130 $ 3,250 $- $ - - $ - $ - ' $ - $ - $ - - $ i - $ - $ - 30 $ 900 15 .Storm Sewer Pipe, 8 -inch 30 LF $30 $ 900 $ - 46 $ 1,610 $ - $ - - 616 $ 21,560 $ - 300 $ 10,500 16 Storm Sewer Pipe, 12 -inch 962 LF $35 $ 33,670 $- $ - 85 $ 4,250 $ - $ - $ - I - $ - $ - $ 17 HDPE Storm Sewer Pipe, 16 -inch 85 LF $50 $ 4,250 18 Storm Sewer Pipe 18 -inch 324 LF $45 $ 14,580 $- $ - $ - $ - 124 $ 5,580 200 $ 9,000 $ - $ - $ - $- 60 $ 3,600 $ - $ - $ - $ . - $ - $ - $ - 19 CMP Storm Sewer Pipe, 42"x29" 60 LF $60 $ 3,600 $- $ - $ - $ - 1 $ 500 •. $ 1 - $ - $ - 1 $ 500 20 Connect to existing structure 2 EA $500 5. 1,000 21 Remove / Abandon Storm Drain Pipe 199 LF $10 $ 1,990 22 Concrete Inlet 1 EA $800 $ 800 $- 50 $ 500 85 $ 850 $ - 29 $ 290 $ - $ • - $ - 35 $ 350 $- $ - $ - $ - $ - $ - 1 $ 800 $ - $ - $- $ - 1 $ 1,000 1 $ 1,000 $ - $ - 5 $ 5,000 $ - 4 $ 4,000 23 Catch Basin Type 1 11 EA $1,000 $ 11,000 $- $ - $ - - $ - 2 $ 2,500 5 $ 6,250 $ - $ - $ - 24 Catch Basin, Type 1-L 7 EA $1,250 $ 8,750 $- $ - $ - $ - 2 $ 4,800 $ - $ - $ - 1 $ 2,400 Catch Basin, Type 2, 48" 3 EA. $2,400 $ 7,200 25 $- $- 1 $ - $ 6,500 1 $ 7,500 $ - - $ - $ 1 - $ - $ - $ - 26 Catch Basin, Type 2, 60" w/ dissipater 1 EA $7,500 $ 7,500 $ - $ - $ - $ - $ - $ - $ - 27 Catch Basin, Type 2, 72", w/debris cage 1 EA $6,500 $ 6,500 28 Light Loose Rip rap 10 Ton $50 $ 500 $- 10 $ 500 $ - $ - $ - $ - $ - $ - $ - 29 Quarry Spalls - 10 Ton 550 $ 500 $- 10 $ 500 $ - $ - $ . - $ - $ - $ - $ - $ - 195 $ 1,170 5 $ 7,500 $ - $ - $ - $ - $ - $ - $ - 29 Log Wier 5 EA $1 500 $ 7,500 30 Extruded Curb 195 LF $6 $ 1,170 30 Relocate Mailbox Support 1 EA $250 $ 250 31 Relocate Sign 2 EA 5250 $ 500 $- $- $ - $ - • $ - $ - $ I - $ - $ - 1 $ 250 $ - $ - $ - $ - $ - $ - $ - 2 $ 500 32 Relocate Flow Guage 1 LS $500 $ 500 $- 1 $ 500 $ - $ - $ - $ - $ - $ - $ - 32 Topsoil137 - CY $30 $ 4,110 $ - 50 $ 1,500 5. $ 150 2 $ 60 20 $ 600 20 $ 600 40 $ 1,200 $ - $ - 33 Hydroseed 3815 SY $1 $ 3,815 $ - 365 $ 365 150 $ 150 100 $ 100 1200 $ 1,200 2000 $ 2,000 $ - $ - - $ - 34 Property Restoration 1 FA $20,000 $ 20,000 1 $ 2,000 1 $ 3,000 1 $ 4,000 $ 2,000 1 $ 1,000$ 2,000 1 $ 4,000 $ - 1 $ 2,000 Subtotal $ 287,093 Contingency (10%) $ 28,709 Estimated Construction Cost $ 315,802 Sales Tax (8.6%) $ 27,159 $ 31,291 $ 3,129 $ 34,420 $ 2,960 $ 52,372 $ 5,237 $ 57,609 $ 4,954 $ 29,680 $ 2,968 $ 32,648 $ 2,808 $ 13,655 $ 1,366 $ 15,021 $ 1,292 $ 28,970 $ 2,897 $ 31,867 - $ 2,741 $ 31,175 $ 3,118 $ 34,293 $ 2,949 $ 54,390 $ 5,439 $ 59,829 $ 5,145 $ - $ ' - $ - $ - $ 45,560 $ 4,556 $ 50,116 $ 4,310 r - _........ .. . ss '.-.� ��y,,y�q. .... . - •c - - °'' 'i tom= -..?7;r.. ,'si ..m ..,, ,.:ai .ty,. . � s 'x•16=3 Z ,'s._ .:.:l�:,S,,..�.. , , �-`u ""'.?E"' _. .a: .;.�.w.� ,�y. 6v...a .. �i•.. „t"1+' �M�_ .,.., -a. - „x,34 " -�«,�.;�,..> . ,608 .Y3.. sal' .. ..a��-=.. Ff+1.,� r M 37242:�74= _., - � .S. .e:..,.Y's ,""r"�- _• �}Y,: = 5 ..,.. ,.•, �,.�. "��, _.. *,....,. �^ ��.5 * ?�C '-4 •: . - � * X54='"426.` : S . . . w`ik!hi . ,..ai '"-r A , � �..w .s.. .. � .ua4 .. �- - ... � ,.ry .. X/L4 � - � - - t,Y,F•+ , h s SS_ W.t,+--•�C. t - - _. a -...- .-: ' .. :v u .' '.�'. �.. _. .. �'�^^ -.. _ � , -�..<. <.s.�. _ �+.. r�'3. ... «,. «.-.. Y ,.. ,_,. - l_x"'.t=' -:...- .. rel((+ p .x. A.YTr•:. ?�-v:3iv ,.. ,}. .. ,-e.....� ,a,.. ,y}i.._:•-w+,.. .'P.i�a.. 's. b, M. .' _.__?„Y' -,.'S > E'. .,..,, a vti_a � Vi,„: -: :.4.-=',:o ...- .. �. ..�.� �. , ... _ .. �:. �` - �� .: ... _.: > , �96t� LIO,., �: • wd .."$ �: _ .. .� -AK' :__ ,,.. s... .�...... "`Ll y»Yy .. ti - - _u ;t�"� . ,.-. T380� . '^.�. ., � Ya`..^ei �5y. � �.. �:�, ' ., i s `i y . ,' • «.. '9 ..,� N _ ,, ,, _ -_ �- , .> >��?;?: 6 ,i � sx�•-=� e�_�?�="d `, �.m;.j p„e,,, _ _ ;w�. , ,. �C.OS: ..34 OTA ES[MTEDCONSTRfJG ... _ ... _... •. 4 .. _: _ . _ _. a � .;.:6256.x:, ..��5 �, , nnn ,., , ..,.I'S xOc nnn ecn nM GSn nnn cd9 500 Preliminary Budget Estimates: $340,500 $40,000 RECEIVED CITY OF TUKWILA MAY 2 8 1998 PERMIT CENTER CLUB S 116 ST S 111 PL S 112 ST S 111 S 1 ST PROJECT NO. 2 4134th AVENUE S CULVERT 1 1 REPLACEMENT 15 138 ST N ?4\S 127 ST 1, HICHLINE SPECIALTY 1 CENTER S 133 ST '1 4' S 135 ST S S 113 ST 115 sr S5 j15 Sj 'S 116 S 6 /Sof S7 1A. //4 sr I D,. , NI �sTl WALL; E. 1 c.\.• S 117 S , \ N �L ' S119Sr:: 5_12(/1.31_-1E, S124ST SIIN. .p. 126 ST ',v,9 r 511128 ST \;' \ (.r' I$ \\\ 1 S 130•ST o\ �9 124 ST roe \ .n i5 1 1 S• / %1 sf. S 1 �3'�. / I- �� I l N ID'•�\S� S 134 ST o'D N Y n �In al `�_ 1 \dpi ,` n �N ")"..t1 Yi R\V N I N N N _ 1Frs6—$T n .1 s \ �'1 S 136 ST. a0'/(N- S'137 ST N N A— n �In a S137 I \ S140ST<,'; S 141 �� v IS 140 L. N ST 1N �: ST 2.• 9 CJI � � N 514 ST � � I �, s, 1425 41 2 PL \ N :;f:NPL•A,S 144 ST In \ N '3 s Q�i P • Ni p NI N All AAA 1 -1 N N N S 140 ST S 138 ST S 142 ST S 146 ST S 144 ST CJS 150/ 5148 ST S 154 ST P'k / PROJECT NO 152 ST A S 158th STREET ." 47th AVENUE S STORM DRAIN5w .N 1 .i, >/ (� N6S158j r - 151, Sr IS 150 ST ' s l5 S S 152 ST / .rur a •T // (41a S 160 ST v / c/I S 156TST V Cfl n D If ' N D S 160 158 ST \ A �9pf Ns 163.EL4 VICINITY MAP ....t03 '5 62 N MINI co P IJBLIC ti QRJC5 DEPT. •ENG I PEERING• STREETS• WATER •SEWER • BUILDING• EMI? 1161MRAPI6A 1998 SMALL DRAINAGE PROJECTS .1 o • • z I ,r / i i .rI .I ° i 9" E S128TH STREET R/W .L` _ sin 0 5 10 20 SCALE: 1" = 10' 120 30 120 110 CATCH BASIN TYPE 2 72'0 IE 98.35 RIM 106.00 3414 AVE S 110 100 90 SUMP 96.00 57 IS IE98.4 EXISTING.. ..........PAVEMENT. FINISHED GRADE GRAVEL BORROW FILL (TYP) x 29' CMP, S = 0.5% EXISTING CULVERT IE95:0 IE 98.1 TOP VCR EL 97.1 TOP V1ER EL 96.1 TOP W1ER EL 95.1 TOP WIER EL 94.1 TOP WIER EL 93.1 EXISTING CREEK EL 92.1 TYP 100 90 CONSTRUCTION NOTES 1. ALL WORK ON THIS PROJECT SHALL BE IN ACCORDANCE WITH HPA REQUIREMENTS INCLUDED IN APPENDIX X OF THE SPECIFICATIONS. CONSTRUCTION NOTES Q REMOVE 50 IF 24'0 CMP AND REPLACE YCH 57 IF OF 42 x 29' CMP, S=0.5X Q SAWCUT, REMOVE AND RESTORE EXISTING PAVEMENT PER TYPICAL PAVEMENT REPAIR DETAIL, SHEET 2. Q MATCH EXISTING CREEK GRADE, IE 98.4. BEVEL PIPE END TO MATCH SLOPE. PIPE OUTLET, IE 98.1. Q REMOVE AND REPLACE EXISTING CONTROL BOX AND CONCRETE SLAB. © PLACE 6' x 8' x 1' DEEP RIP RAP PROTECTION PAD. EXCAVATE AS REQUIRED TO MATCH TOP OF PAD WITH INVERT ELEVATION. PLACE FILTER FABRIC OVER SUBGRADE PRIOR TO PLACING RIP RAP. 0 INSTALL 5' GRAVEL SHOULDER (4' DEPTH OF CSTC) ON EAST. SIDE OF EXISTING ROADWAY. ® INSTALL CATCH BASIN TYPE 2, 72'0, WITH DEBRIS CAGE PER DETAIL, SHEET 5. Q DRESS DISTURBED AREAS WITH 12' MINIMUM DEPTH QUARRY SPALLS. PLACE FILTER FABRIC OVER SUBGRADE PRIOR TO PLACING RIP RAP. 10 HYDROSEED ALL DISTURBED AREAS. 11 ADJUST MANHOLE, EXISTING RIM EL = 100.00. PROPOSED RIM EL = 104.00. 4��gRIL� tp P ZJBL/C WORKS DEP T. x +ENGINEERING.STREETS•WATER•SEWER•BUILDING+ ?gymoy 1908`' ,,r'h,,,,ct„r, Architecture Civil Engineering Urban Design 1998 SMALL DRAINAGE ,PROJECTS 41 4/988 SEPA REVIEW SUBMITTAL 4l 1 21 J PJG 4/98 proj eng NJD 4/98Landecape 34TH AVENUE SOUTH CULVERT REPLACEMENT file 110 805PPR04.DN VA d1T scale AS SHOWN WM no no date revisions date 4/21/98 0 COVER FILTER FABRIC WITH STREAM GRAVEL 93 00000 .I.0%rI1:IV It ° AIL eplrif0,0 0 fi '•I. I. I. I. I.�i O1.1 �fLlier T0P OF BANK (TYP) HOLD RIPRAP 2' INSIDE TOE OF CHANNEL EACH EACH END OF LOG ON DOWNSTREAM FACE (TYP) TOE OF SLOPE (TYP) 60) II 2'TypIAItt ( ) It m REGRADE EXISTING STREAM GRAVEL PER LOG WEIR SECTION, THIS SHEET EXISTING BANK EXCAVATION UMITS CHANNEL VADTH Zo °o 6W60!:d6000ri!I!Irn Q I I.1'.LI.I• .I.IiI I.1/, . io o1. o1o%jo 0 NOTCH PER DETAIL, THIS SHEET 5' MIN t OF STREAM PLAN 6' (WIDTH AT BOTTOM OF BANK) 5' MIN OMITS OF GEOTEXIILE FABRIC (TYP) UGHT LOOSE RIPRAP BANK PROTECTION AT & AROUND EXCAVATED AREA. CARE TO BE TAKEN SO ALL LARGE ROCKS CONTACT EACH OTHER & VOIDS ARE FILLED WITH SMALLER ROCKS. HAND PLACEMENT MAY BE NECESSARY. BACKFILL WITH SUITABLE EXCAVATED MATERIAL PLUNGE POOL PER DETAIL, THIS SHEET ELEVATION AS RIPRAP BANK PROTECTION NOTED ON PLANS 1.5' MIN THICKNESS (TYP) CHOKE VOIDS WITH SPALLS. HAND PLACEMENT MAY BE NECESSARY. 1 3 FILTER FABRIC BACKFILL WITH SUITABLE NATIVE 2' rNOTCH MATERIAL OR GRAVEL BORROW AS DETERMINED BY THE ENGINEER (TYP) COMPACT TO 90% PRIOR TO PLACING RIPRAP. MINIMIZE AMOUNT OF EXCAVATION FOR RIPRAP (TYP BOTH SIDES) 2' PLUNGE POOL SEE LOG WEIR SECTION SEC11QN TYPICAL LOG WEIR DETAIL NTS SEE LOG WEIR SECTION, THIS SHEET MINIMUM 12' 0 FIR LOG, EMBED INTO BANKS MINIMUM 5' EACH END (TOP LOG) EXISTING BANK EXCAVATION OMITS PLANT FRESH CUT 3' LONG WILLOW CUTTINGS, SEE SHT 9. FILTER FABRIC MINIMUM 12' 0 FIR LOG, EMBED INTO BANK MINIMUM 3' EACH SIDE (BOTTOM LOG) DRILL 114'0 HOLE IN TOP LOG & DRIVE 3' LONG fa REBAR THRU BOTH LOGS (6' OC) 2 X 6 CEDAR WOOD NAILER STRIP SECURED VATH HOT DIPPED GALV NAILS FOR THE FULL LENGTH OF THE LOG FINISHED GRADE FLOW DIRECTION CONFORM TO EXISTING STREAM BOTTOM GEO1EXTILE 1O EXTEND A MINIMUM OF 4' UPSTREAM OF LOGS & .ANCHOR END WITH REBAR 24' MIN ALL OVER GEOTEXTILE WITH STREAM BED GRAVEL LOG WEIR SECTION NTS FLOW DIRECTION NOTCH WIDTH AS NOTED ON SECTION PLUNGE POOL UGHT LOOSE RIPRAP CHOKE VOIDS WITH STREAM GRAVEL/COBBLES TOP CENTER LOG WEIR SEE SHEET 4 NOTCH DETAIL NTS LOG ♦4Og �•tp� PUBLIC WORKS DEPT_ x •ENGINEERING•STREETS+IPATER+SEIPER+BUILDING• Ilb oy • 1908•`' by date �� Ar blLaelur. L rnbc p * tectur° Urban Design 1998 SMALL DRAINAGE PROGRAM w4 SEPA REVIEW SUBMITTAL El drown EN NJD 4/98 proj opt Prc 4/98 34TH AVENUE. SOUTH DETAILS. 518 no eosoETo5Dw PTO d scale As SHOWN field bk no no date revisions date 4iwe8 G ; I i 1 47TH AVENUE S • S 168TH STREET • /. 0 5 10 20 40 SCALE: 1' = 20' 60 18' 0 HDPE SLOPE DRAIN 18' HDPE DRAIN GENERAL NOTES Q CONTRACTOR SHALL UMIT DISTURBED AREA TO A MAXIMUM OF 25' WIDE ALONG PIPE ALIGNMENT UNLESS APPROVED BY THE ENGINEER. 0 ALL DISTURBED AREAS SHALL BE HYDROSEEDED IMMEDIATELY FOLLOWING CONSTRUCTION. PLASTIC SHEETING SHALL BE USED TO PROTECT THE DISTURBED SLOPE WHENEVER MEASURABLE PRECIPITATION IS FORECAST UNTIL GRASS IS ESTABUSHED. DRAINAGE NOTES Q1 FIELD LOCATE TYPE 2 CATCH BASIN, 48'0, WITH LOCKING COVER AT OUTLET OF EXISITNG 12'0 CMP PIPE. INSTALL 164 LF OF 18'0 HDPE STORM DRAIN WITH 2' MINIMUM COVER. Q2 INSTALL ENERGY DISSIPATOR AND OUTFALL PROTECTION, SEE DETAIL, THIS SHEET. 12' TYPE 2 CATCH BASIN, 48'0 WITH DEBRIS CAGE PLAN EXISTING GROUND DEBRIS CAGE PER STD DETAIL PROVIDE PIPE ANCHORS AT 25' OC 1141E: FIELD LOCATE OUTFALL IN FLAT AREA AT BASE OF STEEP SLOPE RIP RAP OUTFALL PROTECTION MATCH EXISTING GROUND (TIP) dIVIP MUM ilkIP ‘11,4111 /VP Ilk. SECTION 2' UGHT LOOSE RIPRAP WITH GEOTEXT1LE BENEATH (TYP) 5' DEEP TYPE 2 CATCH BASIN, 48'0 ENERGY DISSIPATOR & OUTFALL PROTECTION DETAIL NTS o,.% • As 1908 t�� xl Q' P UBLIC WORDS DEPT. *ENGINEERING*STREETS*WATER*SEWER*BUILDING* KM 1998 SMALL DRAINAGE - PROJECTS Me 12 /98 SEPA REVIEW SUBMITTAL 61112 LLW � Arcbltectur. Landscape Architecture cm] a Oben °e^ 21 &eked PJG 4/98 Pnq ag N4 4/98 S 156TH ST/47TH. AVE S STORM DRAIN no 805PPR12DWt Prof da scale As SHOWN field bk no no date revisions date 4/2V98