Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
SEPA E02-005 - CITY OF TUKWILA / PUBLIC WORKS - 2002 OUTFALL REPAIR
E02 -005 2002 OUTFACE REPAIR PROJECT 48TH AVE SO OUTFACE SO 130TH PT OUTFACE c City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF DECISION DATED MARCH 18, 2002 TO: Julie Lawton, the Seneca Group King County Assessor, Accounting Division State Department of Ecology, SEPA Division This letter serves as a notice of decision that the application for planned action regarding the construction of three new one story light aircraft hangars, the relocation of one existing single story light aircraft hangar and the demolition of a two -story office building and associated parking is issued pursuant to TMC 21.04.156. PROJECT BACKGROUND FILE NUMBER: APPLICANT: REQUEST: Location: PROJECT DESCRIPTION: E02 -007 The Seneca Group for the Museum of Flight Determine that the proposed construction, demolition and relocation fall under the Manufacturing /Industrial Center -Heavy (MIC/H) planned action criteria and therefore no additional SEPA review is required. 9404 East Marginal Way South, (tax account numbers: 332404 -9019; 562420 -1032 and 542260 -0124) The project is a 349,000 square foot expansion of the existing Museum of Flight adjacent to the King County International Airport. The project proposed under this Planned Action SEPA will be carried out in three or four phases. Phase Al is a new stand alone building expanding the Museum; Phase A2 will join the new building with the existing museum and enclose-the Red Barn, the first of the Boeing manufacturing buildings. Phase B is an addition on the east side of the buildings constructed in Phases Al and A2. The final phase (C) is a new building on the west side of East Marginal Way South. In Phase C a two -story, 35,000 square foot office %warehouse will be demolished. In order to expand on the north side of the Museum, one light aircraft hangar must be moved. An earlier Planned Action SEPA (E02 -002) addressed the removal of two hangars on the north side of the Museum of Flight, and moving of one to a parcel north of the existing hangar site. A transfer of properties among the Boeing Company, the Museum of Flight and the King County International Airport is taking place in order to facilitate the Museum's expansion. The applicant provided a traffic impact assessment, geotechnical study, hazardous materials survey and a Phase 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 City of TRkwila • Department of Community Development / 6300 Southcenter BL, Suite 100 / Tukwila, WA 98188 / (206) 431 -3670 DETERMINATION OF NON - SIGNIFICANCE (DNS) File Number: E02 -005 Applied: 02/14/2002 Issue Date: 04/19/2002 Status: ISSUED Proponent: TUKWILA DEPARTMENT OF PUBLIC WORKS Lead Agency: City of Tukwila Description of Proposal: Outfall repair for three sites in Tukwila: Interurban Pl. South Outfall; 48th Ave. South Outfall; S. 130th Pl. Outfall. Each project is to restore sites that have been affected by erosion due to broken outfall pipes or backwater conditions in upstream catch basins. Some work will take place below the Ordinary High Water Mark, however, no heavy machinery will be required below the top of the bank. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native speciea. All sites are located on City right -of -way. Location of Proposal: Address: Parcel Number: Section/Township /Range: Interurban PI. S.; 48 Ave. S; S. 130 PI 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 Kell 3 , .2002 The lead agency will not act on this proposal for 14 days from the date below. Steve Lancaster, Responsible Official City of Tukwila 6300 Southcenter Blvd Tukwila, WA 98188 (206)431 -3670 Date Any appeal shall be linked to a specific governmental action. The State Environmental Policy Act is not intended to create a cause of action unrelated to a specific governmental action. Appeals of environmental determinations shall be commenced within the time period to appeal the governmental action that is subject to environmental review. (RCW 43.21C.075) doc: Miscperm E02 -005 Printed: 0419 -2002 Cit,y of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director MEMORANDUM April 18, 2002 To: Steve Lancaster, Director Fm: Carol Lumb, Senior Planner Re: Project File No. E02 -005: Public Works Outfall Repair Projects Project Description: The City of Tukwila Public Works Department has applied to make repairs to 3 storm water outfall structures, each of which discharges into the Green/Duwamish River. The project was determined to be exempt from a Shoreline Substantial Development permit as the project is for normal maintenance and repair of existing structures (WAC 173 -27 -040 2.(b)). The repairs are as follows: Site 1: Interurban Place South Outfall The existing 30 -inch concrete outfall pipe is broken approximately five feet upstream of the concrete outfall structure, causing displacement of the pipe and structure as well as accelerated erosion around the failed pipe end. The project entails removal and replacement of the existing concrete structure, flap gate and approximately 5 feet of 30 -inch concrete storm drain pipe that has broken and displaced, causing erosion to the river bank. The flap gate will be replaced with a modern, light weight valve, which requires no concrete work and is much less susceptible to creating the erosive situation observed at the current installation. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. All work is below the ordinary high water mark, however no heavy machinery will be required below the top of the bank. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Site 2: 48th Avenue South Outfall The existing 24 -inch corrugated metal outfall pipe has caused localized erosion and undercutting of the concrete anchor that secures the outfall within the bank. Failure of the outfall anchor could greatly accelerate erosion in the stream bank, placing the adjacent Green River Trail and sanitary sewer at risk. The sanitary sewer runs within the trail parallel to and approximately 10 feet south of the top of bank. The project entails restoring the outfall erosion to original grade with quarry spalls and light loose riprap. Woody debris, such as root wads will be incorporated into the riprap 6300 Southcenter Boulevard, Suite #100 0 Tukwila, Washington 98188 0 Phone: 206 - 431 -3670 0 Fax: 206 - 431 -3665 SEPA Review — E02 -005 • • Public Works Storm Water Outfall Projects April 18, 2002 outfall protection. All work is below the ordinary high water mark; however, no heavy machinery will be required waterward of the Green River Trail for the installation. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Site 3: South 130th Place Outfall The existing 18 -inch corrugated metal outfall pipe is buried in the Duwamish river bank, causing a backwater condition in the upstream catch basin during periods of high precipitation and river stage. The proposal is to replace one catch basin and approximately 120 linear feet of 18 -inch CMP pipe along the South 130th Place right of way with two catch basins and 120 linear feet of 18 -inch ductile iron pipe. The new catch basin will include a tide gate check valve to protect the upstream system from backflow during high river stages. The new outfall will occur at the approximate location of the existing outfall. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. Portions of the work are below the ordinary high water mark; however, no heavy machinery will be required waterward of the Green River Trail for the installation. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Proponent: City of Tukwila Department of Public Works Location: There are three storm water repair locations: • Site 1: Interurban Place South, south of South 119th St. at its intersection with the Duwamish River • Site 2: Far eastern end of 48th Avenue South at its intersection with the Duwamish River. A painted green stripe on the guardrail marks the outfall location on the bank. • Site 3: South 130th Place approximately 200 feet north of the intersection with 56th Place South. The existing catch basin is located on the west side of South 130th Place adjacent to the wood fence. The exact outfall location is unknown (buried in the bank) but lies approximately 120 feet north of the catch basin. Date prepared: April 16, 2002 2 c:\mydocs\PW Outfall Projects\SEPA staffrpt.doc SEPA Review — E02 -005 • Public Works Storm Water Outfall Projects April 18, 2002 Lead Agency: City of Tukwila, Department of Community Development Challenges to Document: None Other Agencies of Jurisdiction: Department of Ecology Recommendation: Determination of Non - Significance (DNS) Existing Environmental Information: None Summary of Primary Impacts: Earth • All three sites are located on Duwamish/Green River embankments. The maximum embankment slope is approximately 35 %. Localized slopes due to outfall erosion are nearly vertical and less than 6 feet high. The soils appear to be silty with cobbles, most likely a combination of original stream bank and imported embankment material from past residential/municipal construction. Minor excavation will be required to install the new pipe sections and placement of riprap. The approximate quantities for each site are as follows: Sites 1 and 2: approximately 10 cubic yards will be excavated and removed from the site and 30 cubic yards of rock and woody debris will be imported to restore grades and provide erosion protection downstream of the outfall. Site 3: approximately 120 cubic yards of trench excavation will be required to install the new pipe. Trench backfill will consist of suitable native material and/or import backfill to restore the existing grades. Approximately 20 cubic yards of rock material will be used in the outfall vicinity to provide erosion protection. Some clearing of vegetation will be required to install the new pipes and place the riprap. The projects are intended to improve the erosion that is occurring currently. 3 c:\mydocs\PW Outfall Projects\SEPA staffrpt.doc SEPA Review — E02 -005 Public Works Storm Water Outfall Projects April 18, 2002 • • Construction will be conducted during the dry summer months using erosion control best management practices, as described in the King County Surface Water Design Manual and City regulations. Disturbed areas will be restored with seed and suitable native plant materials after construction is complete. A coconut fiber mat and/or geotextile will underlie all disturbed areas prior to planting. Native species will be water tolerant such as willow, red -osier dogwood and ninebark placed at 2 -4 foot spacing. Air Minor dust and internal combustion engine emissions associated with use of construction equipment will occur only during construction of the project. 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. Water All of the project sites are adjacent to and directly discharge into the Green/Duwamish River. The purpose of the three projects is to repair storm drainage outfalls. The project is exempt from needing a shoreline substantial development permit as the projects are for normal maintenance and repair of existing facilities. For each of the projects up to 10 cubic yards may be removed from the existing river bank to provide a firm foundation for the new outfall pipe and approximately 20 -30 cubic yards of riprap and/or woody debris for the outfall protection. Fill material will be from a state approved source. The total area affected will be about 400 square feet at each site, for a total of 1,200 square feet overall. Temporary bypass of flows will be required to install outfall protection. There are no flows through the outfall pipes when there is no precipitation. There will there be no surface water or ground water withdrawals or diversions. The project site lies within the 100 -year floodplain. No discharges of waste materials to surface waters will occur. Appropriate best management practices will be used to prevent sediment transport into the Duwamish River. 4 c:\mydocs\PW Outfall Projects\SEPA staffrpt.doc SEPA Review — E02 -005 1 Public Works Storm Water Outfall Projects April 18, 2002 Plants The repairs to the storm drainage outfalls will disturb approximately 1200 square feet of grass and himalayan blackberry. There are no known threatened or endangered vegetation species present on the project sites. There is also no known critical habitat for vegetaton on the project sites Disturbed areas will be restored with seed and suitable native plant materials after construction is complete. A coconut fiber mat and/or geotextile will underlie all disturbed areas prior to planting. Native species will be water tolerant such as willow, red -osier dogwood and ninebark placed at 2 -4 foot spacing. Animals The SEPA Checklist notes that songbirds, snakes, rodents, salmon and trout have been observed on or near the site. Chinook salmon and bull trout are present in the River, which is a migration route for the salmon. Restoration will be with native plants to provide additional shade against the riverbank. Woody debris will be placed within the outfall protection or in a nearby location. As a result of the intended maintenance work, current riverbank erosion at the three project sites will cease and localized turbidity levels will improve. Energy/Natural Resources The completed project will not require any types of energy for operation. Environmental Health Construction noise will occur during regular hours of 7:00 a.m. to 6:00 p.m. Construction equipment will be equipped with mufflers and all operations will be in accordance with City of Tukwila noise ordinances. Land/Shoreline Uses The project sites are all located on City right -of -way or drainage easements on single family property. The zoning and comprehensive plan designations for the three projects are as follows: Site 1: Low Density Residential Site 2: Commercial/Light Industrial 5 c:\mydocs\PW Outfall Projects\SEPA staffrpt.doc SEPA Review — E02 -005 • Public Works Storm Water Outfall Projects April 18, 2002 Site 3: Low Density Residential The shoreline designation is Urban. No one will work on the site once the projects are complete and no one is being displaced by construction of the outfall repairs. Historic /Cultural Preservation There are no places or objects listed on or proposed for national state or local preservation registers on or near the three sites. Transportation The three repair projects will not generate new traffic other than the traffic from vehicles working on the storm water repairs. Public Services The repair projects will not result in an increased need for public services. Utilities The Department of Public Works will continue to monitor the outfall sites and make repairs as needed in the future. Recommendation Determination of Nonsignificance 6 c:\mydocs\PW Outfall Projects\SEPA staffrpt.doc Ciiy of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF APPLICATION DATED MARCH 1.`March 29, 2002 The following application has been submitted to the City of Tukwila Department of Community Development for review and decision. APPLICANT: Ryan Partee for City of Tukwila Department of Public Works LOCATION: 3 storm water outfall sites in Tukwila: Interurban Place S. at the Duwamish River; 48`h Avenue S at the Duwamish River; and S. 130`h Place and Duwamish River. FILE NUMBERS: E02 -005, environmental review PROPOSAL: Applicant has applied for review of an environmental checklist (SEPA) to make repairs to three (3) storm water outfall structures, each of which discharges into the Duwamish River. The project does not require a Shoreline Substantial Development Permit (WAC 173 -27 -040 2.(b)) as the project is for normal maintenance and repair of an existing structure. The repairs are as follows: Interurban Place S: removal and replacement of existing 30 -inch concrete structure, flap gate and approximately 5 feet of concrete storm drain pipe which has broken and is causing erosion to the river bank; 48th Avenue S.: restore original grade to area under 24 -inch corrugated metal outfall pipe; S. 130th Place: correct problem with backwater in upstream catch basin during periods of high precipitation by installing a second catch basin and tide gate check valve to protect the upstream system from backflow. OTHER REQUIRED PERMITS: Miscellaneous Permit; Hydraulic Project Approval permit (Washington State Dept. of Fisheries) The file can be reviewed 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 .: .Fridav April 1.2, 2002. If you have questions about this proposal contact Carol Lumb, the planner in charge of this file at 206 - 431 -3661. Anyone who submits written comments will become a party of record and will be notified of any decision on this project. APPEALS You may request a copy of any decision by the Director of the Department of Community Development on a project or obtain information on your appeal rights by contacting the Department of Community Development at 431 -3670. A decision of the Director on the SEPA application may be appealed to King County Superior Court. DATE OF APPLICATION: NOTICE OF COMPLETE APPLICATION: NOTICE OF APPLICATION POSTED: February 14, 2002 February 27,2002 March 15, 2002 s 100 St S 108 St Rainier Golf & Country Club S 116 St %te Site No. — 4 kSite No. 75 i 1500' 3000' 6 5 124 K " ., t • Oster Golf ,, O se • • Fort 1. • Dent • • ■ S 154 St (Carol Lumb - Re: Outfall Repair projects Page 1 From: Ryan Partee To: Carol Lumb Date: 3/25/02 2:02PM Subject: Re: Outfall Repair projects Hi, It's maintenance work for existing City structures. Don't need a Corp permit. Ryan »> Carol Lumb 4:48:13 PM 3/21/02 »> Hi Ryan: I had a call from DOE /Shorelands asking if we had checked with the Corps or whether we needed a permit from them. I said I would check with you because I didn't know! Thanks. Carol CC: Ryan Larson • Ciiy of Tukwila • Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director March 18, 2002 Ms. Alice Kelly Department of Ecology, Northwest Office 3190 160th Avenue SE Bellevue, WA 98008 -5452 Mr. James Morrow, Director City of Tukwila Department of Public Works 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 RE: Shoreline Permit for Stormwater Outfall Repairs Dear Ms. Kelly and Jim: This letter is in response to three repair projects proposed by the Tukwila Department of Public Works in the shoreline of the Duwamish River. Staff from the Public Works Department requested a determination on whether a shoreline substantial development permit is required for these projects. The Department of Public Works proposes to make repairs to three (3) storm water outfall structures, each of which discharges into the Duwamish River. The repairs are as follows: • Interurban Place S: removal and replacement of an existing 30 -inch concrete structure, flap gate and approximately 5 feet of concrete storm drain pipe which has broken and is causing erosion to the river bank; • 48th Avenue S.: restore original grade to area under a 24 -inch corrugated metal outfall pipe; • S. 130th Place: correct problem with backwater in upstream catch basin during periods of high precipitation by installing a second catch basin and tide gate check valve to protect the upstream system from backflow. The proposed projects are located in areas governed by either the City of Tukwila Shoreline Master Program or the King County Shoreline Master Program. The sites are designated Urban Environment under both programs. Under the King County SMP, utilities are subject to the provisions of KCC 25.16.160, "Utilities," which states: 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 Ms. Alice Kelly Mr. Jim Morrow March 18, 2002 • • Utility facilities may be permitted in the urban environment subject to the general requirements section (Section 25.16.030) of this chapter, provided: A. Utility and transmission facilities shall: 1. Avoid disturbance of unique and fragile areas; 2. Avoid disturbance of wildlife spawning, nesting and rearing areas; 3. Overhead utility facilities shall not be permitted in public parks, monuments, scenic recreation or historic areas. B. Utility distribution and transmission facilities shall be designed so as to: 1. Minimize visual impact; 2. Harmonize with or enhance the surroundings; 3. Not create a need for shoreline protection; 4. Utilize to the greatest extent possible natural screening. C. The construction and maintenance of utility facilities shall be done in such a way so as to: 1. Maximize the preservation of natural beauty and the conservation of resources; 2. Minimize scarring of the landscape; 3. Minimize siltation and erosion; 4. Protect trees, shrubs, grasses, natural features and topsoil from drainage; 5. Avoid disruption of critical aquatic and wildlife stages. D. Rehabilitation of areas disturbed by the construction and/or maintenance of utility facilities shall: 1. Be accomplished as rapidly as possible to minimize soil erosion and to maintain plant and wildlife habitats; 2. Utilize plantings compatible with the native vegetation. E. Solid waste transfer stations shall not be permitted within the shorelines of the state. The King County SMP defines utilities as "all lines and facilities related to the distribution, collection, transmission or disposal of water, storm and sanitary sewage, oil, gas, power or refuse." The repairs to the storm water system fall within the category of a utility. Several of the proposed repairs are to correct erosion problems around the outfalls. The SEPA Checklist states that disturbed areas will be restored with seed and suitable native plant materials following construction. A coconut fiber mat and/or geotextile mat will underlie all disturbed areas prior to planting. Native plant species will be water tolerant, such as willow, red -osier dogwood and ninebark placed at 2 -4 foot spacing. The project complies with the provisions of the King County SMP. Under the Conservation Element of the Tukwila Shoreline Master Program, policy 8 states: Outfalls and surface run -offs should be controlled to minimize adverse effects on the river. The repair projects are to repair breaks in the storm water system that are causing erosion around the outfall pipes and sedimentation in the river or backwater in the existing storm water system. The SEPA checklist outlines the measures that will be taken during construction to prevent erosion and sedimentation from occurring. 2 c: \mydocs\PW Outfall Repair\shore- exempt- outfallproj.doc Ms. Alice Kelly Mr. Jim Morrow March 18, 2002 • • It is our determination that the repair projects are exempt from requiring a Shoreline Substantial Development Permit as the projects are for normal maintenance and repair of existing structures as permitted by WAC 173 -27 -040 2.(b). If you have any questions, please call me at 206 - 433 -3670 or Carol Lumb at 206 - 431 -3661. Sincerely, Steve Lancaster, Director Department of Community Development Enclosures: SEPA Checklist Vicinity Map cc: Carol Lumb, Associate Planner Ryan Partee, Fisheries Biologist Ryan Larson, Senior Engineer 3 c: \mydocs\PW Outfall Repair\shore- exempt- outfallproj.doc State of Washington County of King City of Tukwila CITY OF TUKWILA Department of Community Development 6300 Southcen'ter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 E -mail: tukplanO,ci.tukwila.wa.us AFFIDAVIT OF INSTALLATION AND POSTING OF PUBLIC INFORMATION SIGN(S) I RYAN ///,, k/ (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 3 / /57'O - the Public Notice Board(s) in accordance with Section 18.104.110 and the other applicable guidelines were posted on the property located at s by , so as to be clearly seen from each right -of -way primary vehicular access to the property for application file number ,rte -COS— I herewith authorize the City of Tukwila or its representative to remove and immediately dispose of the sign at the property owner's expense, if not removed in a timely manner or within fourteen (14) days of a Notice letter. On this day personally appeared before me K G,tL L vscv� to me known to be the individual who executed the foregoing in ment and acknowledged that he/stie signed the same as his/bogr voluntary act and deed for the uses and purposes mentioned therein. SUBSCRIBED AND SWORN to before me this ` day of ►v!/`. , �� My commission expires on � T1 S 103 St 1 y S� S 04 St -o 1"'' f 1111 \ 6108 Rainier Golf & CountrClub y S 116 St OHM Boeing Site__No..3 Site No. — 4 `ti Site -No. 5 1500' 3000' S 133 St S 135 St S 138 St Foster Golf Course S 137 St S 140 S OStpr Golf Course • • • • Fort ♦` • Dent 1 St S 149 St S 149 S S 152 St S 154 St S 153 St • [Carol Lumb - Re: : A goof From: Ryan Larson To: Carol Lumb Date: 3/29/02 11:16AM Subject: Re: A goof I do not think this will cause any trouble. - Ryan Page 1 »> Carol Lumb 03/29/02 10:33AM »> Hi there - it's mea culpa time here. When I did the Notice of Application for the 3 outfall projects I meant to send the Notice to DOE and the tribes as part of meeting our public notice requirements in the code. Unfortunately I forgot and only did the legal notice in the paper. S000....I am redoing the Notice to extend the comment period 14 days so these agencies can weigh in if they want. Sorry - I hope this doesn't mess up your construction schedule. You can come yell at me if you want! : -( Carol • Gity of Tukwila • Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director NOTICE OF APPLICATION DATED MARCH 15, 2002 The following application has been submitted to the City of Tukwila Department of Community Development for review and decision. APPLICANT: Ryan Partee for City of Tukwila Department of Public Works LOCATION: 3 storm water outfall sites in Tukwila: Interurban Place S. at the Duwamish River; 48th Avenue S at the Duwamish River; and S. 130th Place and Duwamish River. FILE NUMBERS: E02 -005, environmental review PROPOSAL: Applicant has applied for review of an environmental checklist (SEPA) to make repairs to three (3) storm water outfall structures, each of which discharges into the Duwamish River. The project does not require a Shoreline Substantial Development Permit (WAC 173 -27 -040 2.(b)) as the project is for normal maintenance and repair of an existing structure. The repairs are as follows: Interurban Place S: removal and replacement of existing 30 -inch concrete structure, flap gate and approximately 5 feet of concrete storm drain pipe which has broken and is causing erosion to the river bank; 48th Avenue S.: restore original grade to area under 24 -inch corrugated metal outfall pipe; S. 130th Place: correct problem with backwater in upstream catch basin during periods of high precipitation by installing a second catch basin and tide gate check valve to protect the upstream system from backflow. OTHER REQUIRED PERMITS: Miscellaneous Permit; Hydraulic Project Approval permit (Washington Dept. of Fisheries) The file can be reviewed 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 Monday, April 1, 2002. If you have questions about this proposal contact Carol Lumb, the planner in charge of this file at 206 - 431 -3661. Anyone who submits written comments will become a party of record and will be notified of any decision on this project. APPEALS You may request a copy of any decision by the Director of the Department of Community Development on a project or obtain information on your appeal rights by contacting the Department of Community Development at 431 -3670. A decision of the Director on the SEPA application may be appealed to King County Superior Court. DATE OF APPLICATION: NOTICE OF COMPLETE APPLICATION: NOTICE OF APPLICATION POSTED: c: \mydocs \Public Works Outfall Reparis \Outfall - notapp.doc February 14, 2002 February 27, 2002 March 15, 2002 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 -431 -3670 • Fax: 206 -431 -3665 50111 6111. 100.50 IF • 830 NIT. 30' 50NC. 0E • 87.3 SE. 30' P051 'W/ LLECTRIC OUTLET POST W/ 3603 5233 RE3AR & ALUL.CAP / N. +555.76 CND. RY_ 965023 E. 5103.88 "' N. 0.8" & EL. 99.53• ' E. 0.26' • TK RE906 c A155.CAP N. `C 4515.97 7.. EL ?00.53 0 5 10 20 30 V I SHED WAMISH RIVER CONC. CUTLET STRUCTURE WATERS EDGE 1 -15 -0T ELEV. 86.3 2' PLASTIC WArR LINE PIPE ON TOP Of GROUND CONSTRUCTION NOTES Oj PROTECT 2TNL OF PRIVATE PULP. OZ RE320VE AND REPLACE POST 665581 D FROST PROF HO0 6080. REPLACE EXISTING PVC WATER LNE, J 66206658 COYER. Q REVOVE EXISTING 30' CGNC STOF2 DRAIN PPE AND OUTLET STRUCTURE TO BRCREN MKT. QS INSTALL 30' CONC t D0 ROYAL CWPUNC, 5 IF 30' DI PIPE AND 30' SLIP ON 0430< VALVE RED SERIES TF -2 CR APPROVED ETA- PROVE( LIGHT ICCSEE WRAP PITFALL PROTECTION, PUCE COMMIT FIBER MATTING AND 05DRO5(00 ALL DISTURBED AREAS © CONSTRUCTION AC(055 UM FINE GRADE AND 810R05EID ALL DISTURBED AREAS O PROTECT SHED. (DI PROTECT TREE. c 3 F u a P UBLZC WORKS BEe3�T. • ENGTNEERING • STREETS • WATER • SL1E tit • BUILDING • IEPG 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 3 INTERURBAN PLACE SOUTH OUTFALL so late mmlm 3 Be re corn-saw .rile r.r biz GM PK NAIL N 4946.24 �c E 9945 .24 EL 9E99 a 554H I57= 1166 99.73 • 1E 93.0 CENTER CB 154- / I \ R14 28.49 F 94.3 NW 10 94.3E 48TH AVENUE S 9049 1545 IO 99.18 L 87.8 NC, 1 +' CEP E 96.7 5 17' P8C IE 87.8 58, 2+' 7EP R 94.3 9 PK NAIL N 5000.00 E1000000 L 100.00 5 0 5 10 20 30 .1 ®Y relU pia 6' CSBC FATER LATER — SECTION A -A 1(15 7%15010 14'0 OP PITH / (WOVE SUPPORT LICHT LOOSE RPRAP• CHOKE / VOO5 PITH WARP( SPALLS ROOT WADS 10 tra 10 PREPARE HOLE PRI METAL BAR ORIOE 911108 STARE TAMP SOL /MIND SLAKE BEVELED END N SOIL FC LOW PLANT= PROCEDURE PER SPEC6ICATIONS RAMC& POTI1 4 OF WILLOW ' STAKE P DAMAGED WRING PIACE MEM WILLOW STAKE Y LENGTH 104M1M 1' TO 1 -W DIAMETER PLANT ABOVE 24'• OP INVERT El£7A1WN WILLOW CUTTING INSTALLATION 1(15 CONSTRUCTION NOTES OI POPE EA01 1(0T WAD AT 64I171SEC110N TO 1081 2 11AT SURFACES 1HRU BOLT 141I11 ''0 GALVAMZED STEEL EMT OR RW. C0IMTER1NK BOLT HEAD AND NUT. 0 NAND PULE RWRAP UNDER 14'0 OP AND CONCRETE P87 9NPORT. O EACH ROOT WAD SHALL BE 18' NOMINAL 0AYETER AN1 YNIMUY 40• AT F110 OF TRUNK. O REMOTE WARINAA OS COVER ALL EXPOSED AREA MM COCONUT FIRM MATING PLANT FRES1 OJT 3 L04G %%LOW WTTINGS SEE DETAA. THIS SHEET. PLANTS SHALL BE SCTENI11C NAME I (011101 NAME I SPACNG COMITY SAU% SOOIO49S 191KA WILLOW 1 1' OC 1 15 5AU% U9ANDRA I ',AMC WILLOW 12 CC I 30 ON Ossouo•M 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 4 48TH AVENUE S OUTFALL 4 5 51 In 0057RN•SAAD ale r,m bIt DOE PK NAL STA 101-00 11 97.99 120 cli"."'"5" RNER a .7 5 rocs ;.*:•;; \ 5 130TH PL 0 10 20 40 60 c-' 120 110 100 STA 12A SA 47. 100' LT 74 *51604724 TITS 2 CB 99.136 — STA 24144) 3.01911 INSTALL NCH 72 1-11I-2 99.76 90 80 1 5 - `WIW1.141P 221! . DI SDP LIAXO, STA 124-611 0111TAII. 90.91 • 12 P LT .73 LI C WORK- S' 1.) 1=' T. •ENGINEERENG•STREETS•RATER•SLITFat •BUI1DING • dolo dewed drys eheeked Fg91 1.1 ht VO 1110 ILO VO 50% REVIEW SUBMITTAL 14 CONSTRUCTION NOTES 0 REMOVE AND REPLACE FENCE CN NEW TREATED 4.4 POSTS WERE REWIRED CATO1 BASPrINSTALLABON. 0 REPAIR GRAVEL 9156LDE0 AND DRINEWAT, 945 TIPICAL SEMEN WIS SHEET. 0 MOS or aismc 0140 SLCIIIE REMADE PLACE comtan FIBER MATTING AND 11156OSEED AIL DISTURBED AREAS 0 PLAcE 19. 142 11110)14677 MIT LOOSE R1PRAP OMER CCOSTRUCTION • motecrU. DRAINAGE NOTES • REIXTVE 67511440 1715 2 CAT01 BASH AND INSTAU. NEW 72' TTPE 2 [AWN BASIN. OFFSET 0257141 AND NEW PIPE AIJOIVENT THRIXICH CB AS FOLLOW: ® - IN, APPROX 5' LT - 10' 04 CUT. APPROX 3. LT ® INSTALL 12' 01E0K VALVE ON 1110241810 12' 5117019 DRAIN PIPE FtED 60166 TTPE CD OR APPROVED EGO& BEVEL END Cr 18' DI PIPE PER DEW. SHEET 2. SAWCAFT IN NEAT VERTICAL UNE AND SEAL MN PAVINC 141— OUTFALL REPAIR PROGRAM SITE NO. 5 S 130TH PLACE TYPICAL SECTION SE TYPICAL 1RDICI1 SECTICW 941:ET 2 s l00 St AM MP II MI SI% s toe St Rnlnler Golf & Country Club S 116 St SitegNo.T3:4 Site No. — 4 Site No. - 5 1500' 3000' • • • ♦' Oster Golf Z; Curse • • • •.• Fort % • • Dent 1 • S 154 St ♦ • 1 Vo • • [Carol - Re: Outfali repairs From: Ryan Larson To: Carol Lumb Date: 3/15/02 9:58AM Subject: Re: Outfall repairs No treatment yet. We are planning to add treatment to the Interurban Place S. outfall that will treat 50% of the contributing area. This will be part of the Duwamish Area Sewer Project to be constructed this summer. Treatment will be added to the S. 130th Place outfall in the Summer of 2003 as part of the Foster Point project. No treatment is currently planned for 48th Ave S. I will need to laminate the site map once I get that put together. - Ryan »> Carol Lumb 03/15/02 09:24AM »> Hi there - I'm working on the letter to Ecology saying the repair projects are exempt from a shoreline substantial development permit. For these pipes that are discharging into the Duwamish, is there treament of the water before it hits the river ? ?? Thanks! Carol p.s. Ryan L. - I left you the laminated Notice of Application and site maps - do you need me to laminate anything else ? ?? Page 1 Carol Lumb - Re: Tukwila Outfall Repair ;� Page 1 From: Nora Gierloff To: Carol Lumb Date: 3/8/02 12:56PM Subject: Re: Tukwila Outfall Repairs Yes, I would do the other types of notice in the normal w »> Carol Lumb 03/08/02 12:50PM »> Nora: For the SEPA on the 3 outfalls that Public Words is working on, even though we're not doing a mailing for the Notice of Applicationto the neighbors, I'm assuming I should still send it to DOE, the tribes, etc? Also, should I publish a notice in the paper on the SEPA? (mail to agencies et Thanks. Carol • City of Tukwila • Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director MEMORANDUM February 27, 2002 TO: Ryan Partee, Fisheries Biologist FM: Carol Lumb, Associate r RE: 2002 Outfall Repair Projects (E -02 -005) Your application for SEPA review of the three outfall repair projects for 2002 located in the City right of way on Interurban Place South, 48th Avenue South, and South 30th Place has been found to be complete on February 27, 2002 for the purposes of meeting state: mandated time requirements:.. The next step is for you to install the notice boards on the sites within 14 days of the date of this letter. Let me know if you need instructions on how the Notice Boards must; be prepared. I will prepare a-laminated copy of the Notice of Application for you to post on the boards. Please let me know 3 days prior to installing the notice boards so that I can prepare the Notice of Application with the correct date. After installing : the . signs with the laminated notices, please return the signed Affidavit of Posting to me. This determination of complete application does not preclude the City from requesting 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 -3661. c:\mydocs\2002 Outfall Projects \Complete.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 • • City of Tukwila Department of Community Development File Number E 0a -o ENVIRONMENTAL REVIEW ROUTING FORM TO: ❑ Building ❑ Plannin [\Public-Works ❑ Police ❑ ParkslRec V...1,0 1 1-A (� _ z G z-c) Project Name: a.o07 OU tj 1Perct,r:v I) \e or--s Address: $ oor.G .t s P( Date Transmitted: Response Due by: 3 — t5"--02. Staff Coordinator: C \. LuM Date Response Received: Instructions The attached environmental checklist was received for this project. Please review and provide the following information: a) Potential environmental impacts, b) how each should be mitigated (i.e. SEPA condition, ordinance requirement, permit requirement etc.), c) recommended specific language as to how the mitigation measure should read, d) the policy basis for the recommended mitigation (i.e. adopted policy), e) the nexus between the recommended mitigation and the impact, and f) corrections to the checklist and supporting documentation. THIS INFORMATION IS IMPORTANT IN PROVIDING TIMELY AND ACCURATE SERVICE TO THE PUBLIC. Attach additional sheets if necessary. If you find the submittal incomplete and would like to request additional information, please inform the staff planner within five working days! RECEIVED FEB 2 7 7nn7 TUKWW►II A PUBLIC WORKS Comments Prepare Date: 47/. • • City of Tukwila Department of Community Development File Number E 0.2 -o5 ENVIRONMENTAL REVIEW ROUTING FORM TO: ❑ Building ❑ Planning Public Works ❑ Police ❑ Parks/Rec Project Name: a0O7 O01--k(J Civ e'✓3\era5 Address: 4% '� 5 cot-flak s I Date Transmitted: a 4 , 0.1_ Response Due by: 3 — Staff Coordinator: C \. LUG Instructions Date Response Received: The attached environmental checklist was received for this project. Please review and provide the following information: a) Potential environmental impacts, b) how each should be mitigated (i.e. SEPA condition, ordinance requirement, permit requirement etc.), c) recommended specific language as to how the mitigation measure should read, d) the policy basis for the recommended mitigation (i.e. adopted policy), e) the nexus between the recommended mitigation and the impact, and f) corrections to the checklist and supporting documentation. THIS INFORMATION IS IMPORTANT IN PROVIDING TIMELY AND ACCURATE SERVICE TO THE PUBLIC. Attach additional sheets if necessary. If you find the submittal incomplete and would like to request additional information, please inform the staff planner within five working days! Comments Prepared by: Date: RECEIVED SEPA CITY OF TUKWILA FEB 14 ail ,:VIRONMENTAL Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 COMMUNITY REVIEW Telephone: (206) 431 -3670 FAX (206) 431-3665 DEVELOPMENT E E -mail: tukplan ct,ci.tukwila.wa.us APPLICATION NAME OF PROJECT/DEVELOPMENT: Z 007- WT19 -LL -c—P4 r R- f(zv LOCATION OF PROJECT/DEVELOPMENT: (Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. LIST ALL 10 DIGIT PARCEL NUMBERS. AA, w IT-lgn) Cet'y R014/6)45EMP77 (AFt a- 00 -84-.J S-0 ft -1 0 ✓i�f-i4LL . PLE)4 -SE SE-6- WAY, , 4224' A-JJ Soirru pv,-p4t_c S - (3 o÷` f I, O'1 F1-LL Quarter: A/W/ Section: /V Township: CZ 3 Range: 4E (This information may be found on your tax statement.) 5 w 1/ 02 3 4c 4-"n Nw 14 02'' 4 <_ DEVELOPMENT COORDINATOR : The individual who: • has decision making authority on behalf of the 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. PYA -,.1 L,4.2SooJ / i�y4.4 , A- itTE-E Name: Address: b 3 00 So .ji DA CEvVmv• Bull) l) Phone: 204, 4 33 or 44/ FAX: —Lob 4 3 1 317 ( S Signature: G:\ APPHANLL.ANDUSE.APP\SEPAAPP.DOC, 06/16/00 Date: Z / / 4 /zeo Z FOR STAFF USE ONLY SIERRA TYPE P-SEPA Planner: C- o \ L�► File Number: L 0 a -op---- Application Complete (Date: ) Project File Number: Application Incomplete (Date: ) Other File Numbers: NAME OF PROJECT/DEVELOPMENT: Z 007- WT19 -LL -c—P4 r R- f(zv LOCATION OF PROJECT/DEVELOPMENT: (Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. LIST ALL 10 DIGIT PARCEL NUMBERS. AA, w IT-lgn) Cet'y R014/6)45EMP77 (AFt a- 00 -84-.J S-0 ft -1 0 ✓i�f-i4LL . PLE)4 -SE SE-6- WAY, , 4224' A-JJ Soirru pv,-p4t_c S - (3 o÷` f I, O'1 F1-LL Quarter: A/W/ Section: /V Township: CZ 3 Range: 4E (This information may be found on your tax statement.) 5 w 1/ 02 3 4c 4-"n Nw 14 02'' 4 <_ DEVELOPMENT COORDINATOR : The individual who: • has decision making authority on behalf of the 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. PYA -,.1 L,4.2SooJ / i�y4.4 , A- itTE-E Name: Address: b 3 00 So .ji DA CEvVmv• Bull) l) Phone: 204, 4 33 or 44/ FAX: —Lob 4 3 1 317 ( S Signature: G:\ APPHANLL.ANDUSE.APP\SEPAAPP.DOC, 06/16/00 Date: Z / / 4 /zeo Z go2.- ooS 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 the Department if you feel that certain items are not applicable to your project and should be waived, or should be submitted in a later timely manner for use at the Public Hearing (e.g., revised colored renderings). Application review will not begin until it is determined to be complete. ADDITIONAL MATERIALS MAY BE REQUIRED, TO ENSURE CONSISTENCY WITH CITY DEVELOPMENT STANDARDS: Depatltnent staff are available to answer questions about application materials at 206 -431 Community Development and 206 -433 -0179 Department of Public Works. D COMPLETE APPLICATION CHECKLIST TABLE FEB 14 2002 COMMUNITY Information Required. May be waived in unusual cases, upon approval of both Public Work and Planning Information Waived PbWk /Ping Office Use Only ii kVELOPMENT Comments & Conditions. APPLICATION FORMS: 1. Application Checklist: one (1) copy, indicating items submitted with application. 2. Four (4) copies of supporting studies with original signatures and license stamp as needed. 3. Complete Application Packet: Six (6) copies of application form and full sized plans, one set of all plans reduced to 8.5" by 11" (High Quality Photo Reduction) and other materials and information as specifically listed in Project Description and Analysis, Site Plans, Landscape Plan and Elevations. 4. SEPA Environmental Checklist (6 copies) and fee ($325). PUBLIC NOTICE MATERIALS: 5. King County Assessor's map(s) which shows the location of each property within 500 feet of the subject lot. / ✓ SUBMIT ONLY IF UNDERLYING PERMIT REQUIRES PUBLIC NOTICE. 6. Two (2) sets of mailing labels for all property owners and tenants' (residents and businesses) within 500 feet of the subject property. See Public Notice Materials. Note: Each unit in multiple- family buildings -e.g. apartments, condos, trailer parks must be included). / ✓ SUBMIT ONLY IF UNDERLYING PERMIT REQUIRES PUBLIC NOTI_�, x u lic Notice Board will be required on site within 14 days of the Department determining that a complete application has been ,received I PROPERTY INFORMATION 7. Vicinity Map with site location. 8. Surrounding Land Use Map for all existing land uses within a 1,000 foot radius from the lot's property lines. 9. Title Report -- Clearly establish status as legal lot(s) of record, ownership, all known easements and encumbrances. ✓ 10. Lot lines for 300 ft. from the site's property lines including right -of -ways. C: \homepagc \tukwila \dcd \ apps \SEPAAPP.DOC, 08/31/00 "(titA( G( 1J GL pp It t- pu ioexc v Oft- C nt col' e Pomp AT eiwi StrE. Preliminary Environmental Checklist RECEIVED FEB 2 7 2002 TUKWILA PUBLIC WORKS WAC 197 -11 -960 Environmental Checklist RECEIVED FEB 14 2002 COMMUNITY DEVELOPMENT 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: 2002 Outfall Repair Program 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: Ryan Larson, P.E. 4. Date checklist prepared: August 28, 2001 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 2002. Construction will begin in July /August 2002, or as required by the Hydraulic Project Approval conditions, and should be completed within 30 calendar days. The exact construction timing or schedule will be determined as the design and permitting processes are finalized. 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: City of Tukwila ESA Screening Checklist. 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: City of Tukwila Substantial Shoreline Development Permit (exemption requested) City of Tukwila Flood Zone Permit Washington State Department of Fish and Wildlife Hydraulic Project Approval 11. Brief, complete description of the proposal, including the proposed uses and the size of the project and site: The outfall repair program includes the following 3 project sites: Site 1— Interurban Place South Outfall The existing 30 -inch concrete outfall pipe is broken approximately 5' upstream of the concrete outfall structure, causing displacement of the pipe and structure as well as accelerated erosion around the failed pipe end. The project entails removal and replacement of the existing concrete structure, flap gate and approximately 5 feet of 30 -inch concrete storm drain pipe which has broken and displaced, causing erosion to the river bank. The flap gate will be replaced with a modern, • light weight valve which requires no concrete work and is much less susceptible to creating the erosive situation observed at the current installation. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. All work is within the ordinary high water mark; however, no heavy machinery will be required below the top of bank. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Site 2— 48th Avenue South Ouffall The existing 24" corrugated metal outfall pipe has caused localized erosion and undercutting of the concrete anchor that secures the outfall within the bank. Failure of the outfall anchor could greatly accelerate erosion in the streambank, placing the adjacent Green River Trail and sanitary sewer at risk. The sanitary sewer runs within the trail parallel to and approximately 10 feet south of the top of bank. The project entails restoring the outfall erosion to original grade with a quarry spalls and light loose riprap. Woody debris, such as root wads will be incorporated into the riprap 2 outfall protection. All work is within the ordinary high water mark; however, no heavy machinery will be required waterward of the Green River Trail for the installation. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Site 3— S 130x`' Place Ouffall The existing 18 -inch corrugated metal outfall pipe is buried in the Duwamish river bank, causing a backwater condition in the upstream catch basin during periods of high precipitation and river stage. The proposal is to replace approximately one catch basin and 120 linear feet of 18 -inch CMP pipe along the South 130th Place right of way with two catch basins and 120 linear feet of 18 -inch ductile iron pipe. The new catch basin will include a tide gate check valve to protect the upstream system from backflow during high river stages. The new outfall will occur at the approximate location of the existing outfall. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. Portions of the work is within the ordinary high water mark; however, no heavy machinery will be required below the top of bank. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. A copy of the preliminary plan is 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: All project sites are located in the City of Tukwila along the Duwamish River, a vicinity map is attached: • Site 1 is located at the dead end of Interurban Place South directly behind the residential storage shed on the river bank. This outfall is located within an existing drainage easement. ♦ Site 2 is located at the dead end of 48th Avenue South. A painted green stripe on the guardrail marks the outfall location on the bank. • Site 3 is located on S 130th Place approximately 200 feet north of the intersection with 56th Avenue South. The existing catch basin is located on the west side of S 130th Place adjacent to the wood fence. The exact outfall location is unknown (buried in bank), but lies approximately 120' north of this catch basin. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (underline one): Flat, rolling, hilly, steep slopes, mountainous, other— Embankment /streambank b. What is the steepest slope on the site (approximate slope percentage)? The maximum embankment slope is approximately 35 %. Localized slopes due to outfall erosion are nearly vertical and less than 6 feet high. 3 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. The soils appear to be a silty with cobbles, most likely a combination of original stream bank and imported embankment material for past residential /municipal construction. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No, except as directly attributed to the outfall erosion. e. Describe the purpose, type and approximate quantities of any filling or grading proposed. Indicate source of fill. Minor excavation will be required to install the new pipe sections and placement of riprap will be employed to create a solid foundation for erosion protection at each of the outfall locations. Approximate quantities for each site is noted below. ♦ Site 1— Approximately 10 cubic yards will be excavated and removed from the site and 20 cubic yards of rock material will be imported to restore grades and provide erosion protection downstream of the outfall. ♦ Site 2 - Approximately 10 cubic yards will be excavated and removed from the site and 30 cubic yards of rock and woody debris will be imported to restore grades and provide erosion protection downstream of the ouffall. ♦ Site 3 — Approximately 120 cubic yards of trench excavation will be required to install the new pipe. Trench backfill will consist of suitable native material and /or import backfill to restore the existing grades. Approximately 20 cubic yards of rock material will be used in the outfall vicinity to provide erosion protection. All import materials will be from a state approved source. f. Could erosion occur as a result of clearing, construction or use? If so, generally describe. g- Yes, some clearing of vegetation will be required; however, the eroded areas at existing outfall locations will be much improved by the construction. Construction will be completed during the dry, summer months using appropriate erosion control best management practices and minimizing disturbed areas. 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. 4 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 seed and suitable native plant materials following construction. A coconut fiber mat and/or geotextile will underlie all disturbed areas prior to planting. Native plant species will be water tolerant, such as willow sp., red - osier dogwood, and ninebark placed at 2 to 4 foot spacing. 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 intemal 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. Yes, the project is adjacent 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, the project is within the Ordinary High Water Mark. 5 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. At each site, up to 10 cubic yards may be removed from the existing river bank to provide a firm foundation for the new outfall pipe and approximately 20 -30 cubic yards of riprap and /or woody debris for the outfall protection. Fill material will be from a state approved source. The total area affected will be about 400 square feet at each site, or 1,200 square feet total for all 3 sites. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose and approximate quantities, if known. Temporary bypass of flows (if any) will be required to install outfall protection. There . is zero flow through the outfall pipes during periods of no precipitation. 5) Does the proposal lie within a 100 -year flood plain? If so, note location on the site plan. Yes, all sites are below the 100 -year flood plain elevation. 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. This project is to repair existing City of Tukwila storm drainage outfalls in three locations. No modifications to current collection and disposal of runoff will occur. 6 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 the Duwamish River. 4. PLANTS a. Underline types of vegetation found on the site: deciduous trees: 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, b. What kind and amount of vegetation will be removed or altered? Approximately 1200 square feet of area (total for 3 sites) of grass and himalayan blackberry will be disturbed by construction. c. List threatened or endangered species or critical habitat known to be on or near the site: There are no known threatened or endangered vegetation species present on the project sites. There is also no known critical habitat for vegetation on the project sites. d. Proposed landscaping, use of native plants or other measures to preserve or enhance vegetation on the site, if any: Disturbed areas will be restored with seed and suitable native plant materials following construction. A coconut fiber mat will and /or geotextile will underlie all disturbed areas prior to planting. Native plant species will be water tolerant, such as willow sp., red - osier dogwood, and ninebark placed at 2 to 4 foot spacing. 7 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: invertebrates: fish: amphibians: reptiles: birds: 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 b. List any threatened or endangered species or critical habitat known to be on or near the site. Chinook salmon and bull trout are known to be present within the Duwamish River. c. Is the site part of a migration route? If so, describe. The Duwamish River is a migration route for Chinook salmon. Bull trout have an incidental presence. d. Proposed measures to preserve or enhance wildlife, if any. Restoration will be with native plants to provide additional shade against the riverbank. Woody debris will be placed within the outfall protection or in a nearby location. As a result of the intended maintenance work, current riverbank erosion at the three project sites will cease and localized turbidity levels will improve. 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. 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. No. 1) Describe special emergency services that might be required. None. 2) Proposed measures to reduce or control environmental health hazards, if any: Repairs and refueling of construction equipment would be done away from the watercourses and storm conveyance facilities. A spill control response kit will be on site /s. 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? City right of way or drainage easements on single family residential properties. b. Has the site been used for agriculture? If so, describe. No. 9 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? Unknown. g. What is the current shoreline master program designation of the site, if any? Unknown. h. Has any part of the site been classified as an environmentally sensitive area? If so, specify. Unknown. 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. 10 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. 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. 11 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. 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 site plans, if any. Not applicable. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Not applicable. 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. 1. 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 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 qas, 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 decision. Signature: Date submitted: The following checked items are included with the Checklist: _x Vicinity Map _x_ Project Plans KPG, Inc. Outfall Repair Program SEPA 2/12/02 14 City of Tukwila ESA Screening Checklist Date: City of Tukwila Endangered Species Act Screening Checklist Applicant Name: .g765 raG440¢' Street Address: ias, S'Waccw Tom- 4C • City, State, Zip: C44(444-14-- f0/64' Telephone: 74 12' ' 497 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. Mav 24, 2001 1 City of Tukwila ESA Screening Checklist 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 sche duled 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 (see Tukwila Municipal Code (TMC) Chapter 18.06, Zoning Code, Page 18 -11). Please circle appropriate response. N - Continue to Question 2 -0 - Continue to Question 1 -1 (Page 3) 2 -0 Will the project require any form of clearing? Clearing means the removal or causing to be removed, through either direct or indirect actions, any vegetation from a site (see Chapter 18.06, Page 18 -8). Please circle appropriate response. N - Continue to Question 3 -0 - Continue to Question 2 -1 (Page 4) 3 -0 ill 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. N - Continue to Question 4-0 - Continue to Question 3 -1 (Page 5) 4 -0 1 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -11). This includes fuel or other chemicals stored on -site during construction. Please circle appropriate response. 0 - Continue 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 and 18.45.080E.4, or would require a geotechnical report if not mpt under TMC 18.45.080A, should answer Yes. Please circle appropriate response. Vv Ul - Continue to Question 6-0 YES - Continue to Question 6-0 May 24, 2001 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -13). For the purpose of this analysis, this includes the establishment of new lawn or grass. Please circle 6 a ropriate response. — Checklist Complete YES — Checldist 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 answe r. 1 -1 Will the project involve the modification of a watercourse bank or bank of the Green/Duwamish or Black Rivers between the ordinary high water mark and top of bank? This includes any projects that will require grading on any slope leading to a river or stream, but will not require work below the ordinary high water mark. Work below the ordinary high water mark is covered in Part C. Please circle appropriate response. MContinue to Question 1 -2 - Continue to Question 1 -2 1 -2 Could the construction, operation, or maintenance of the project result in sediment transport off site or increased rates of erosion and/or sedimentation in watercourses, the Green/Duwamish rivers, or the Black River? Most projects that involve grading have the potential to result in increased erosion and/or sedimentation as a result of disturbances to the soil or earth. If your project involves grading and you have not prepared a Temporary Erosion and Sedimentation Control Plan specifically designed to retain 100 percent of the runoff (including during construction) from impervious surface or disturbed soils, answer Yes to this question. If your project is normally exempt under the Tukwila Municipal Code and would not require the preparation of a Temporary Erosion and Sedimentation Control Plan, BUT may still result in erosion or sediment transport off site or beyond the work area, answer Yes to this question. Please circle appropriate response. el- Continue to Question 1 -3 - Continue to Question 1 -3 1 -3 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -12). 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. Please circle ropriate response. - Continue to Question 2 -0 (Page 2) YES - Continue to Question 1 -4 Part B (continued) May 24, 2001 3 City of Tukwila ESA Screening Checklist 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 question. Please circle appropriate response. - Continue 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 - Continue to Question 3 -0 (Page 2) - Continue to Question 2 -2 2 -2 ill the project involve clearing of any trees within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? A tree is defined by TMC 18.06.845 as any self- supporting woody plant, characterized by one main trunk, with a potential diameter - breast- height of 2 inches or more and potential minimum height of 10 feet. Please circle ropriate response. - Continue to Question 2 -4 YES - Continue to Question 2 -3 2 -3 Will the project involve clearing of any evergreen trees from within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis evergreen means any tree that does not regularly lose all its leaves or needles in the fall. Please circle appropriate response. 0 Continue to Question 2 -4 YE - Continue to Question 2 -4 . 2 -4 Will the project involve clearing within 100 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3 -0 (Page 1) 4- Continue to Question 2 -5 2 -5 Will the project involve clearing within 40 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3 -0 (Page 2) Ciff Continue to Question 3 -0 (Page 2) May 24, 2001 4 City of Tukwila ESA Screening Checklist Part D: PIe ase 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. - 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 hould answer Yes to this question. Please circle appropriate response. - 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, ding both juveniles and adults. Please circle appropriate response. ' eluding 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 nk to the ordinary high water mark on the left bank. Please circle appropriate response. O Continue to Question 3 -5 YES - Continue to Question 3 -5 3 -5 Will the project require the removal of debris from within the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, debris includes, but is not limited to fallen trees, logs, shrubs, rocks, piles, rip -rap, submerged metal, and broken concrete or other building materials. Projects that would require debris removal from a watercourse or the Green/Duwamish or Black Rivers as part of a maintenance activity should answer Yes to this question. Please circle appropriate response. NO - Continue to Question 3 -6 Continue to Question 3 -6 May 24, 2001 5 City of Tukwila ESA Screening Checklist Part D (continued) 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. - 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, ciarticularly waterfowl. Please circle appropriate response. - Continue to Question 3 -8 Y S - 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) b- Continue to Question 4-0 (Page 2) May 24, 2001 6 OUTFACE REPAIR PROGRAM PROJECT NO. 00 - DRO2 MAYOR STEVE MULLET k.. DIRECTOR OF PUBLIC WORKS. JAMES MORROW, P.E.. CITY ENGINEER BRIAN SHELTON, P.E....- SCHEDULE OF DRAWINGS SHEET NO. 1 2 3 4 5 RECEIVED FEU 2 7 2002 TUKW.LA PUBLIC WORKS 'SITE NO. TITLE TITLE SHEET NOT USED FOR 50% SUBMITTAL / l 3 INTERURBAN PLACE S OUTFALL -- 7 t�' 4 48TH AVENUE S OUTFALL Alt L 5 S 130TH PLACE OUTFALL CITY COUNCIL JOAN HERNANDEZ, PRESIDENT PAM CARTER JOE DUFFIE DAVE FENTON JIM HAGGERTON PAMELA LINDER RICHARD SIMPSON LEGEND EXISTING: GV lR FH O TMH -0- PP ® MON O SMH ® WM ❑ C8 PROPOSED: • THICKENED EDGE GATE VALVE FIRE HYDRANT TELEPHONE MANHOLE POWER POLE MONUMENT SANITARY SEWER WATER METER CATCH BASIN JUNCTION BOX THICKENED EDGE ASPHALT CONCRETE PAVING CATCH BASIN STORM DRAIN PIPE WO KS .13_E11=17-7.. • ENGINEERING • STREETS *WATER ■ SE 1Y ER +BUILDING * b date t .= vol dram m 1/01 checked tdw voi 1/01 du field bk no KpG Architecture • Landscape Architecture eumn..rt g Urban Denise 50% REVIEW SUBMITTAL OUTFALL REPAIR P1OGRAM TITLE SHEET 0 no date revisions SOMH 4 RIM = 100.50' IE = 88.0' NW, 30" CONC. IE = 87.9' SE, 30" CONC. POST W/ ELECTRIC-OUTLET POST W/ BIRD HOUSE RE3AR & ALUM.CAP N. 4953.76 FND. R&C #15023 E. 5103.88 " N. 0.84' & EL. 99, 53' / . E. 0.21' 1 `1 1/ '/J i RE9AR & ALUM.CAP N. 4915.97 E. 5047.93 EL. 100.53' • SHED 0 5 10 20 30 94.) i&ct DUWAMISH RIVER 30" CONC. I.E. 86.1' CONC. OUTLET STRUCTURE WATERS EDGE 1 -15 -01 ELEV. 86.3' 2' PLASTIC WATER LINE PIPE ON TOP OF GROUND CONSTRUCTION NOTES 01 PROTECT INTAKE OF PRIVATE PUMP. 02 REMOVE AND REPLACE POST MOUNTED FROST PROOF HOSE MOBS. 03 REPLACE EXISTING PVC WATER UNE, 3' MINIMUM COVER. ® REMOVE EXISTING 30. CONC STORM DRAIN PIPE AND OUTLET STRUCTURE TO BROKEN JOINT. OS INSTALL 30' CONC x DI ROMAC COUPUNG, 5 LT 30' DI PIPE, AND 30' SUP ON CHECK VALVE, RED SERIES TF -2 OR APPROVED EQUAL PROVIDE UGHY LOOSE RIPRAP OUTFALL PROTECTION, PLACE COCONUT FIBER MATTING AND HYDROSEED ALL DISTURBED AREAS. © CONSTRUCTION ACCESS UMITS. FINE GRADE AND HYDROSEED ALL DISTURBED AREAS. 07 PROTECT SHED. 08 PROTECT TREE. EXPIRES: 1/26/01 } InE • 1fI • • 1908. yi } _P U IJIC WO DEF'T. * ENGINEERING* STREETS *WATER * SEWER *BUILDING * by date deed NJO 1/01 drawn NM 1/01 checked NJD 1/01 pro] en( ram 1 /01 Prow d r field bk no 'ramp Architecture Landscape Architecture Cl.11 enataeerwa Urlwn Desien • 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 3 INTERURBAN PLACE SOUT1H OUTFALL no date revision 3 5 file no 0037P1PR- S3.DWG =de r dice DATE PK NAIL N 4946.24 \\ E 9946.24 '\ EL. 98.99 \\ CB 1544 RIM 98.49 IE 94.3 NW IE 94.3 E 0 SSMH 1524 RIM 99.73 ,\ IE 910 CENTER •\ GP JB a • s GP GP \ PK NAIL \. N 5000.Q0 E 10000 00 EL 100.00 GP 48TH AVENUE S SDG GP \ \ / / //\ \i SDMH 1545 RIM 99.18 IE 87.8 NE, 24" CMP IE 96.7 SE, 12" PVC IE 87.8 SW, 24" CMP IE 94.3 W 5 �z • 0 5 10 6" CSBC FILTER LAYER \ \ *aunt \, \ \ \ % \ 20 30 EXIST1NG 24'0 OAP WITH CONCRETE SUPPORT LIGHT LOOSE RIPRAP, CHOKE VOIDS WITH QUARRY SPACES ROOT WADS SECTION A -A NTS CC W 24" CAP IE 87.3 CE CO a, FINISH GRADE Q 1 11 QMM a ii . Q ate REMOVE PORTION OF VALLOW .....27- STAKE IF DAMAGED DURING PLACEMENT y \ /\ / \ / / \\ NATIVE SOIL PREPARE HOLE WITH METAL BAR DRIVE WILLOW STAKE & TAMP SOIL AROUND STAKE WILLOW STAKE 3' LENGTH MINIMUM 1° TO 1 -" DIAMETER PLANT ABOVE 24'0 CMP INVERT ELEVATION BEVELED END IN SOIL FOLLOW PLANTING PROCEDURE PER SPECIFICATIONS WILLOW CUTTING INSTALLATION NTS CONSTRUCTION NOTES ® SHAPE EACH ROOT WAD AT INTERSECTION TO FORM 2 FLAT SURFACES. THRU BOLT WITH ¥s'0 GALVANIZED STEEL BOLT OR ROD. COUNTERSINK BOLT HEAD AND NUT. 20 HAND PLACE RIPRAP UNDER 24'0 CMP AND CONCRETE PIPE SUPPORT. ® EACH ROOT WAD SHALL BE 18' NOMINAL DIAMETER AND MINIMUM 8'0 AT END OF TRUNK. ® REMOVE GUARDRAIL • p COVER ALL EXPOSED AREA WITH COCONUT FIBER MATTING. PLANT FRESH CUT 3' LONG WILLOW CUTTINGS. SEE DETAIL, THIS SHEET. PLANTS SHALL BE SCIENTIFIC NAME COMMON NAME SPACING QUANTITY SAUX SITCHENSIS SITKA WILLOW 2' OC 26 SAUX LASIANDRA PACIFIC WILLOW 12' OC 30 ,��� P WEI C TWORK,S 1 EF T - * ENGINEERING* STREETS *WATER *SEWER *BUILDING* 1908 dram checked Prol 1?ml dir field hk 00 by SAB LLW ran NdD date 1/01 va vo1 1/01 Erimo Architecture Lsodicape a.0 eaoneeme Urea nesso 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 4 48TH AVENUE S 0U-11-FALL 4 5 file 00 0037PPRSADWG sale r : 20• revisions date CATE 120 PK NAIL STA 10+00 EL 97.99 OUWAMISH RIVER c 5 FENCE \5 FENCE S 130TH PL O 10 20 40 60 STA 13+98.1 EL 100.00 o>�✓ PCt (PaM la✓ • 120 110 • 100 90 80 STA" T2 +54.47, 3.00' LT INSTALL NEW 0 TYPE 2 CB 99.86 STA 12 +54.47,.3.00' LT INSTALL NEW 72-0 • 99.86... ... . 11....11 ... .. .. .... S 0152 95 ♦1 • N .6 1 MAX' STA 12 +61.16 23.71 LT . 22. LF ...... .... .. . • 18"'DLSDP DI OUTFALL E 90.91 100 80 11 12 14 CONSTRUCTION NOTES REMOVE AND REPLACE FENCE ON NEW TREATED 4x4 POSTS WHERE REWIRED FOR CATCH BASIN-INSTALLATION. REPAIR GRAVEL. SHOULDER AND DRIVEWAY, SEE TYPICAL SECTION THIS SHEET. UNITS OF CLEARING AND SLOPE REGRADE PLACE COCONUT FIBER MATTING AND HYDROSEED ALL DISTURBED AREAS. PLACE 18' MIN THICKNESS LIGHT LOOSE RIPRAP OVER CONSTRUCTION GEOTEXIILE DRAINAGE NOTES O REMOVE EXISTING TYPE 2 CATCH BASIN AND INSTALL NEW 72' TYPE 2 CATCH BASIN. 0H 1 EXISTING AND NEW PIPE ALIGNMENT THROUGH CB AS FOLLOW: SAWCUT IN NEAT VERTICAL UNE AND SEAL WITH PAVING OIL - 18" CMPIN, APPROX 5' LT - 18'DI OUT, APPROX 3'LT INSTALL 12' CHECK VALVE ON INCOMING 12" STORM DRAIN PIPE, RED VALVE TYPE CO( OR APPROVED EQUAL BEVEL END OF 18" DI OUTFALL PIPE PER DETAIL, SHEET 2. EXISTING FENCE TO REMAIN EXCEPT WHERE SHOWN ON PLANS 6' CSBC SHOULDER/ DRIVEWAY RESTORATION TYPICAL SECTION SEE TYPICAL TRENCH SECTION, SHEET 2 t ExP[tES: 1/26/01 P UBLIC WORKS DE'F'T_ • ENGINEERING* STREETS *WAl E1:i* SEWER •BUILDING b► date dui,* i nt drawn NM vol dunked NJD 1/01 prof enE NJD 1/01 lroldir field bk no KPH Architecture landeaaya Architecture Civil 0, im ricx Urban Denies ' 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 5 S 130TH PLACE 5 5 Mt 110 0037PPNS5.CWG ae71e r = 20' date DATE Preliminary Environmental Checklist WAC 197 -11 -960 Environmental Checklist REc' i vED FER 14 2002 DE�EOPmEY ivr 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: 2002 Outfall Repair Program 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: Ryan Larson, P.E. 4. Date checklist prepared: August 28, 2001 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 2002. Construction will begin in July /August 2002, or as required by the Hydraulic Project Approval conditions, and should be completed within 30 calendar days. The exact construction timing or schedule will be determined as the design and permitting processes are finalized. 1 • 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: City of Tukwila ESA Screening Checklist. 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: City of Tukwila Substantial Shoreline Development Permit (exemption requested) City of Tukwila Flood Zone Permit Washington State Department of Fish and Wildlife Hydraulic Project Approval 11. Brief, complete description of the proposal, including the proposed uses and the size of the project and site: The outfall repair program includes the following 3 project sites: Site 1— Interurban Place South Outfall The existing 30 -inch concrete outfall pipe is broken approximately 5' upstream of the concrete outfall structure, causing displacement of the pipe and structure as well as accelerated erosion around the failed pipe end. The project entails removal and replacement of the existing concrete structure, flap gate and approximately 5 feet of 30 -inch concrete storm drain pipe which has broken and displaced, causing erosion to the river bank. The flap gate will be replaced with a modern, Tight weight valve which requires no concrete work and is much less susceptible to creating the erosive situation observed at the current installation. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. All work is within the ordinary high water mark; however, no heavy machinery will be required below the top of bank. All disturbed areas adjacent to the pipe and ouffall protection will be restored with appropriate native species. Site 2 48"' Avenue South Outfall The existing 24" corrugated metal outfall pipe has caused localized erosion and undercutting of the concrete anchor that secures the outfall within the bank. Failure of the outfall anchor could greatly accelerate erosion in the streambank, placing the adjacent Green River Trail and sanitary sewer at risk. The sanitary sewer runs within the trail parallel to and approximately 10 feet south of the top of bank. The project entails restoring the ouffall erosion to original grade with a quarry spalls and Tight loose riprap. Woody debris, such as root wads will be incorporated into the riprap 2 • outfall protection. All work is within the ordinary high water mark; however, no heavy machinery will be required waterward of the Green River Trail for the installation. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. Site 3— S 130th Place Outfall The existing 18 -inch corrugated metal outfall pipe is buried in the Duwamish river bank, causing a backwater condition in the upstream catch basin during periods of high precipitation and river stage. The proposal is to replace approximately one catch basin and 120 linear feet of 18 -inch CMP pipe along the South 130th Place right of way with two catch basins and 120 linear feet of 18 -inch ductile iron pipe. The new catch basin will include a tide gate check valve to protect the upstream system from backflow during high river stages. The new outfall will occur at the approximate location of the existing outfall. Riprap and quarry spalls will be placed at the pipe outfall to prevent future erosion. Portions of the work is within the ordinary high water mark; however, no heavy machinery will be required below the top of bank. All disturbed areas adjacent to the pipe and outfall protection will be restored with appropriate native species. A copy of the preliminary plan is 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: All project sites are located in the City of Tukwila along the Duwamish River, a vicinity map is attached: • Site 1 is located at the dead end of Interurban Place South directly behind the residential storage shed on the river bank. This outfall is located within an existing drainage easement. • Site 2 is located at the dead end of 48th Avenue South. A painted green stripe on the guardrail marks the outfall location on the bank. • Site 3 is located on S 130th Place approximately 200 feet north of the intersection with 56th Avenue South. The existing catch basin is located on the west side of S 130th Place adjacent to the wood fence. The exact outfall location is unknown (buried in bank), but lies approximately 120' north of this catch basin. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (underline one): Flat, rolling, hilly, steep slopes, mountainous, other— Embankment /streambank b. What is the steepest slope on the site (approximate slope percentage)? The maximum embankment slope is approximately 35 %. Localized slopes due to outfall erosion are nearly vertical and Tess than 6 feet high. 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. The soils appear to be a silty with cobbles, most likely a combination of original stream bank and imported embankment material for past residential /municipal construction. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No, except as directly attributed to the outfall erosion. e. Describe the purpose, type and approximate quantities of any filling or grading proposed. Indicate source of fill. Minor excavation will be required to install the new pipe sections and placement of riprap will be employed to create a solid foundation for erosion protection at each of the outfall locations. Approximate quantities for each site is noted below. • Site 1— Approximately 10 cubic yards will be excavated and removed from the site and 20 cubic yards of rock material will be imported to restore grades and provide erosion protection downstream of the outfall. ♦ Site 2 - Approximately 10 cubic yards will be excavated and removed from the site and 30 cubic yards of rock and woody debris will be imported to restore grades and provide erosion protection downstream of the outfall. ♦ Site 3 — Approximately 120 cubic yards of trench excavation will be required to install the new pipe. Trench backfill will consist of suitable native material and /or import backfill to restore the existing grades. Approximately 20 cubic yards of rock material will be used in the outfall vicinity to provide erosion protection. All import materials will be from a state approved source. f. Could erosion occur as a result of clearing, construction or use? If so, generally describe. g. Yes, some clearing of vegetation will be required; however, the eroded areas at existing outfall locations will be much improved by the construction. Construction will be completed during the dry, summer months using appropriate erosion control best management practices and minimizing disturbed areas. 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. 4 • • 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 seed and suitable native plant materials following construction. A coconut fiber mat and/or geotextile will underlie all disturbed areas prior to planting. Native plant species will be water tolerant, such as willow sp., red - osier dogwood, and ninebark placed at 2 to 4 foot spacing. . 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 intemal 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. Yes, the project is adjacent 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, the project is within the Ordinary High Water Mark. • • 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. At each site, up to 10 cubic yards may be removed from the existing river bank to provide a firm foundation for the new outfall pipe and approximately 20 -30 cubic yards of riprap and /or woody debris for the outfall protection. Fill material will be from a state approved source. The total area affected will be about 400 square feet at each site, or 1,200 square feet total for all 3 sites. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose and approximate quantities, if known. Temporary bypass of flows (if any) will be required to install ouffall protection. There is zero flow through the outfall pipes during periods of no precipitation. 5) Does the proposal lie within a 100 -year flood plain? If so, note location on the site plan. Yes, all sites are below the 100 -year flood plain elevation. 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. This project is to repair existing City of Tukwila storm drainage outfalls in three locations. No modifications to current collection and disposal of runoff will occur. 6 • 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 the Duwamish River. 4. PLANTS a. Underline types of vegetation found on the site: deciduous trees: 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, b. What kind and amount of vegetation will be removed or altered? Approximately 1200 square feet of area (total for 3 sites) of grass and himalayan blackberry will be disturbed by construction. c. List threatened or endangered species or critical habitat known to be on or near the site: There are no known threatened or endangered vegetation species present on the project sites. There is also no known critical habitat for vegetation on the project sites. d. Proposed landscaping, use of native plants or other measures to preserve or enhance vegetation on the site, if any: Disturbed areas will be restored with seed and suitable native plant materials following construction. A coconut fiber mat will and /or geotextile will underlie all disturbed areas prior to planting. Native plant species will be water tolerant, such as willow sp., red - osier dogwood, and ninebark placed at 2 to 4 foot spacing. 7 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: invertebrates: fish: amphibians: reptiles: birds: 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 b. List any threatened or endangered species or critical habitat known to be on or near the site. Chinook salmon and bull trout are known to be present within the Duwamish River. c. Is the site part of a migration route? If so, describe. The Duwamish River is a migration route for Chinook salmon. Bull trout have an incidental presence. d. Proposed measures to preserve or enhance wildlife, if any. Restoration will be with native plants to provide additional shade against the riverbank. Woody debris will be placed within the outfall protection or in a nearby location. As a result of the intended maintenance work, current riverbank erosion at the three project sites will cease and localized turbidity levels will improve. 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. 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. No. 1) Describe special emergency services that might be required. - None. 2) Proposed measures to reduce or control environmental health hazards, if any: Repairs and refueling of construction equipment would be done away from the watercourses and storm conveyance facilities. A spill control response kit will be on site /s. 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 What is the current use of the site and adjacent properties? City right of way or drainage easements on single family residential properties. b. Has the site been used for agriculture? If so, describe. No. 9 • • 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? Unknown. g. What is the current shoreline master program designation of the site, if any? Unknown. h. Has any part of the site been classified as an environmentally sensitive area? If so, specify. Unknown. 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. 10 • • 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. c. Proposed measures to reduce or control aesthetic impacts, if any: N/A 11. LIGHT AND GLARE a. What type of Tight 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. 11 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. 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 site plans, if any. Not applicable. b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Not applicable. 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. 1. • 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 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. 1� • 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 decision. Signature: Date submitted: The following checked items are included with the Checklist: _x Vicinity Map _x_ Project Plans KPG, Inc. Outfall Repair Program SEPA 2/12/02 14 City of Tukwila ESA Screening Checklist Date: City of Tukwila Endangered Species Act Screening Checklist Applicant Name: igi7 ti# % eike ¢- Street Address: ilr ral Ciy Tom-- 4C 4b • City, State, Zip: Viii4(444---G4�-- X/64' Telephone: le, 4I-- ail 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. May 24, 2001 1 City of Tukwila ESA Screening Checklist 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 sche duled 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 (see Tukwila Municipal Code (TMC) Chapter 18.06, Zoning Code, Page 18 -11). Please circle appropriate response. N - Continue to Question 2 -0 - Continue to Question 1 -1 (Page 3) 2 -0 Will the project require any form of clearing? Clearing means the removal or causing to be removed, through either direct or indirect actions, any vegetation from a site (see Chapter 18.06, Page 18 -8). Please circle appropriate response. N - Continue to Question 3 -0 - Continue to Question 2 -1 (Page 4) 3 -0 ill 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. N - Continue to Question 4-0 - Continue to Question 3-1 (Page 5) 4 -0 1 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -11). This includes fuel or other chemicals stored on -site during construction. Please circle appropriate response. Ne - Continue 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 and 18.45.080E.4, or would require a geotechnical report if not qmpt under TMC 18.45.080A, should answer Yes. Please circle appropriate response. - Continue to Question 6-0 YES - Continue to Question 6-0 May 24, 2001 2 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 (see TMC Chapter 18:06, Tukwila Zoning Code, Page 18 -13). For the purpose of this analysis, this includes the establishment of new lawn or grass. Please circle a ropriate response. — Checklist Complete YES — Checklist Complete Part B: Please answer each question below for projects that include grading. Review each question carefully, considering all phases of your project including, but not limited to construction, normal operation, potential emergency operation, and ongoing and scheduled maintenance. Continue to the next question as directed for each No or Yes answe r. 1 -1 Will the project involve the modification of a watercourse bank or bank of the Green/Duwamish or Black Rivers between the ordinary high water mark and top of bank? This includes any projects that will require grading on any slope leading to a river or stream, but will not require work below the ordinary high water mark. Work below the ordinary high water mark is covered in Part C. Please circle appropriate response. Continue to Question 1 -2 - Continue to Question 1 -2 1 -2 Could the construction, operation, or maintenance of the project result in sediment transport off site or increased rates of erosion and/or sedimentation in watercourses, the Green/Duwamish rivers, or the Black River? Most projects that involve grading have the potential to result in increased erosion and/or sedimentation as a result of disturbances to the soil or earth. If your project involves grading and you have not prepared a Temporary Erosion and Sedimentation Control Plan specifically designed to retain 100 percent of the runoff (including during construction) from impervious surface or disturbed soils, answer Yes to this question. If your project is normally exempt under the Tukwila Municipal Code and would not require the preparation of a Temporary Erosion and Sedimentation Control Plan, BUT may still result in erosion or sediment transport off site or beyond the work area, answer Yes to this question. Please circle appropriate response. - Continue to Question 1 -3 - Continue to Question 1 -3 1 -3 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 (see TMC Chapter 18.06, Tukwila Zoning Code, Page 18 -12). 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. Please circle ropriate response. 1`�'J - Continue to Question 2 -0 (Page 2) YES - Continue to Question 1 -4 Part B (continued) May 24, 2001 3 City of Tukwila ESA Screening Checklist 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 question. Please circle appropriate response. ;Continue 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 - Continue to Question 3 -0 (Page 2) - Continue to Question 2 -2 2 -2 ill the project involve clearing of any trees within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? A tree is defined by TMC 18.06.845 as any self- supporting woody plant, characterized by one main trunk, with a potential diameter - breast- height of 2 inches or more and potential minimum height of 10 feet. Please circle ropriate response. - Continue to Question 2 -4 YES - Continue to Question 2 -3 2 -3 Will the project involve clearing of any evergreen trees from within 200 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis evergreen means any tree that does not regularly lose all its leaves or needles in the fall. Please circle appropriate response. Continue to Question 2 -4 YES - Continue to Question 2 -4 2 -4 Will the project involve clearing within 100 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3 -0 (Page 1) 'fi)- Continue to Question 2 -5 2 -5 Will the project involve clearing within 40 feet of the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? Please circle appropriate response. NO - Continue to Question 3 -0 (Page 2) Cifir Continue to Question 3 -0 (Page 2) May 24, 2001 4 City of Tukwila ESA Screening Checklist Part D: Ple ase 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. - 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. q:, - 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, eluding both juveniles and adults. Please circle appropriate response. `1;10 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 Qnk to the ordinary high water mark on the left bank. Please circle appropriate response. . O Continue to Question 3 -5 YES - Continue to Question 3 -5 3 -5 Will the project require the removal of debris from within the ordinary high water mark of a watercourse or the Green/Duwamish or Black Rivers? For the purpose of this analysis, debris includes, but is not limited to fallen trees, logs, shrubs, rocks, piles, rip -rap, submerged metal, and broken concrete or other building materials. Projects that would require debris removal from a watercourse or the Green/Duwamish or Black Rivers as part of a maintenance activity should answer Yes to this question. Please circle appropriate response. NO - Continue to Question 3 -6 (----§) Continue to Question 3 -6 tL /ay 24, 2001 5 City of Tukwila ESA Screening Checklist Part D (continued) 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. - 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, ciarticularly waterfowl. Please circle appropriate response. - Continue to Question 3 -8 Y S - 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 40 (Page 2) ti- Continue to Question 4-0 (Page 2) May 24, 200/ 6 SEATTLE ! y''.��.,asn'1a \�sdN.!,RSI�RI,p• t•\ ase.re: E�® .•, MIC/ff H >\ 1 -D KING COUNTY SEATTLE City of Tukwila Comprehensive Plan Map Scale 1•=25001 NORTH December 4, 1995 This Is a graphic representation of land use designations adopted by City Council 12/4/95. Larger maps that show property lines, designations, and other • zoning Information are available at Tukwila Department of Community Development SITE S SEATAC • Comprehensive Plan Designations LDR -Low Density Residential MDR - Medium Density Residential HDR -High Density Residential 0 -Office MUO -Mixed Use Office RCC- Residential Commercial Center NCC- Neighborhood Commercial Center RC- Regional Commercial RCM- Regional Commercial Mixed Use TUC - Tukwila Urban Center C /LI- Commercial Light Industrial TVS- Tukwila Valley South LI -Light Industrial HI -Heavy Industrial MIC /L- Manufacturing Industrial Center /Light Industrial MIC /H- Manufacturing Industrial Center /Heavy Industrial Overlays and Sub Areas ....:n= s Ora �E-'j� X11 11'.11111 MI11111111 iliilil�� ii 11: ��A 1 ta!�w'l11111111111r- �.+;�� IQ '!'19111 - kw FP! .1V/11!1 I�;1noulligr:I11-= - Ill 1111�11��IfE:.i'i11;== 1111I1 1111= o X11 IINTI!i%i 111111 1111 quiz; so 8 18181 tw CC Public Recreation Overlay Shoreline Overlay (Approx. 200' each side of river) Manufacturing Industrial Center Boundary Tukwila South Master Plan Area Tukwila Urban Center Potential Annexation Area SWA3RD ST II no CO KENT • L4;410 )St MA-p • Paoja — 1-'A-r' w:s W( /Ccv 2.:•w ✓ s 120 110 PK NAIL STA 10+00 EL 97.99 ..' -- '... . \ 5' FENCE OUWAMISH RIVER S 130TH PL 0 10 20 40 60 PK NAIL STA 13+98.1 EL 100.00 120 -i 110 STA 12 +54.47, 3.00' LT INSTALL NEW 72 0 TYPE 2 CB • • 99.86 100 90 80 STA 12 +54.47 3.00' LT INSTALL NEW 72"0 TYPE.. 2..C8___...! 99.86 • S = 015% 95 LF 18` 11 •• ............. 22 .LF.. 18 "..0I • SOP STA 12 +61.16, 23.71' LT O 12' DI OUTFALL .... 60.91 .. 100 90 80 12 PUBLIC WORKS DEPT_ • ENGINEERING► STREETS +WATER •SEW Eft *BUILDING • b date 1101 dram 101 1101 etleekd N.w 1101 1101 dir Cold it KIPG Architecture Landscape Architecture Civil ennn..rtat Urban Design 50% REVIEW SUBMITTAL 14 CONSTRUCTION NOTES Oj REMOVE AND REPLACE FENCE ON NEW TREATED 4x4 POSTS WHERE REQUIRED FOR CATCH BASIN - INSTALLATION. O2 REPAIR GRAVEL SHOULDER AND DRIVEWAY, SEE TYPICAL SECTION THIS SHEET. Q OMITS OF CLEARING AND SLOPE REGRADE PLACE COCONUT FIBER MATTING AND HYDROSEED AU. DISTURBED AREAS. ® PLACE 18' MIN THICKNESS UGHT LOOSE RIPRAP OVER CONSTRUCTION GEOTEXi1LE DRAINAGE NOTES 0 Q2 — 18' CMP IN, APPROX 5' LT REMOVE EXISTING TYPE 2 CATCH BASIN AND INSTALL NEW 72' TYPE 2 CATCH BASIN. 01+st.t EXISTING AND NEW PIPE ALIGNMENT THROUGH C8 AS FOLLOW: SAWCUT IN NEAT VERTICAL UNE AND SEAL WITH PAVING OIL - 18' DI OUT, APPROX 3' LT INSTALL 12' CHECK VALVE ON INCOMING 12" STORM DRAIN PIPE, RED VALVE TYPE CEX OR APPROVED EQUAL BEVEL END OF 18' DI OUTFALL PIPE PER DETAIL SHEET 2. EXISTING FENCE TO REMAIN EXCEPT WHERE SHOWN ON PLANS 3' VARIES 6' ACP CLASS B CSTC TYPICAL SECTION 6' CSBC SHOULDER/ DRIVEWAY RESTORATION SEE TYPICAL TRENCH SECTION, SHEET 2 12 "OISDP I EXP))ES: 1/26/01 OUTFALL REPAIR PROGRAM SITE NO. 5 i S 130TH PLACE I 5 5 file no 0037PPRS5.DWO sale r : zo' date OAATE PK NAIL 11 SSMH 1524 RIM 99.73 IE 93.0 CENTER S oJ, GP J8 0 • c GP \ S H 4946.24 `.� E 9946.24 �.\ EL. 99.99 CB 1544 RIM 98.49 IE 94.3 NW IE 94.3 E GP ,, PK NAIL N 5000.Q0 E 10000:00 EL 100.00 'n 48TH AVENUE S SDMH 1545 RIM 99.18 lE 87.8 NE, 24" CMP IE 96.7 SE, 12" PVC IE 87.8 SW, 24" CMP IE 9.4.3 W GP 0 5 10 20 30 EXISTING 24.0 OAP VATH CONCRETE SUPPORT CHOKE -' VOIDS WITH QUARRY ,SPALLS LIGHT LOOSE /j \� • L . ROOT WADS \ \ mob:" !� 6' CSBC FILTER LAYER \ / \'i • : r SECTION A -A NTS 24" CMP IE 87.3 FINISH GRADE REMOVE PORTION OF WILLOW ,...277- STAKE IF DAMAGED DURING PLACEMENT LENGTH \ /\ ` / / \ / / • NATIVE SOIL PREPARE HOLE WITH METAL BAR DRIVE WILLOW STAKE & TAMP SOIL AROUND STAKE WILLOW STAKE 3 MINIMUM 1. TO 1 -y" DIAMETER PLANT ABOVE 24'0 CMP INVERT ELEVATION BEVELED END IN SOIL FOLLOW PLANTING PROCEDURE PER SPECIFICATIONS WILLOW CUTTING INSTALLATION NTS CONSTRUCTION NOTES Oi SHAPE EACH ROOT WAD AT INTERSECTION TO FORM 2 FLAT SURFACES. IHRU BOLT WITH N.0 GALVANIZED STEEL BOLT OR ROD. COUNTERSINK BOLT HEAD AND NUT. 20 HAND PLACE RIPRAP UNDER 24.0 CAP AND CONCRETE PIPE • SUPPORT. EACH ROOT WAD SHALL BE 1e NOMINAL DIAMETER AND MINIMUM 8'0 AT ENO OF TRUNK. REMOVE GUARDRAIL 50 COVER ALL EXPOSED AREA WITH COCONUT FIBER MATTING. PLANT FRESH CUT 3' LONG WILLOW CUTi1NGS. SEE DETAIL, THIS SHEET. PLANTS SHALL BE SCIENTIF1C'NAME COMMON NAME SPACING QUANTITY SAUX SITCHENSIS SITKA WILLOW 2' OC 26 SALIX LASIANDRA PACIFIC WILLOW 2' OC 30 J 7 F } F P UBLI C WORKS • ENGINEERING STREETS *WATER* SEITER *BUILDING * desinied drawn checked Taidr field bk no bl SAB LLW NJD NJD date vo1 vim vol vo1 Architecture • Landscape Atebitectur. Chit D+pceetin i Urbm Demie 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE N0. 4 48TH AVENUE S OUTFALL 1 4 5 file no 0037PPRSADWG sate r _ 2a revision, date cam SDMH 4 RIM = 100.50 IE = 88.0' NW, 30" CONC. IE = 87.9' SEE, 30" CONC. POST W/ ELECTRIC OUTLET POST W/ PIRD HOUSE REBAR & ALUM.CAP N. 4953.76 END. R &C #15023 E. 5103.88 "> N. 0.84' & EL. 99.53' / E. 0.21' t • r .T RESAR & ALUM.CAP N. 4916.97 E. 5047.93 EL. 100.53 SHED 5 10 20 30 DUWAMISH RIVER 30" CONC. I.E. 86.1' CONC. OUTLET STRUCTURE WATERS ,EDGE 1 -15 -01 ELEV. 86.8' 2' PLASTIC WATER LINE PIPE ON TOP OF GROUND CONSTRUCTION NOTES 0 PROTECT INTAKE OF PRIVATE PUMP. 0 REMOVE AND REPLACE POST MOUNTED FROST PROOF HOSE BIDES. 0 REPLACE EXISTING PVC WATER LINE, 3' MINIMUM COVER. ® REMOVE EXISTING 30' CONC STORM DRAIN PIPE AND OUTLET STRUCTURE TO BROKEN JOINT. 0 INSTALL 30' CONC x 01 ROMAC COUPIJNC, 5 IF 30' DI PIPE, AND 30' SUP ON CHECK VALVE, RED SERIES IF-2 OR APPROVED EQUAL PROVIDE LIGHT- LCOSE RIPRAP OUTFALL PROTECTION, PLACE COCONUT FIBER MATTING AND HYDROSEED ALL DISTURBED AREAS. • CONSTRUCTION ACCESS UMITS. FINE GRADE AND HYDROSEED ALL DISTURBED AREAS. 0 PROTECT SHED. • PROTECT TREE. EXPIRES: 1/26/01 U DC WO KS D_EF' T * ENGINEERING* STREETS *WATER * SEWER * BUILDING * b date 1/01 I/01 1/o1 1 /o1 drawn checked dir field bk no IPQ Architecture Imdecepe Architecture qN Eriguiecruie Urban Darien 50% REVIEW SUBMITTAL OUTFALL REPAIR PROGRAM SITE NO. 3 INTERURBAN PLACE SOUTH OUTFALL 3 5 file no 0O37PPR- Sa.DWG scale r : ,• no date won, date 04TE OUTFACE REPAIR PROGRAM PROJECT NO. 00 - DRO2 MAYOR STEVE MULLET DIRECTOR OF PUBLIC WORKS JAMES MORROW, P.E. CITY ENGINEER BRIAN SHELTON, P.E. SCHEDULE OF DRAWINGS SHEET NO. 1 2 3 4 5 'SITE NO. TITLE TITLE SHEET NOT USED FOR 50% SUBMITTAL 3 INTERURBAN PLACE S OUTFALL 4 48TH AVENUE S OUTFALL 5 S 130TH PLACE OUTFALL CITY COUNCIL JOAN HERNANDEZ, PRESIDENT PAM CARTER JOE DUFFIE DAVE FENTON JIM HAGGERTON PAMELA LINDER RICHARD SIMPSON LEGEND EXISTING: oa GV A FH O TMH -0- PP ® MON O SMH ® WM ❑ CB PROPOSED: • THICKENED EDGE GATE VALVE FIRE HYDRANT TELEPHONE MANHOLE POWER POLE MONUMENT SANITARY SEWER WATER METER CATCH BASIN JUNCTION BOX THICKENED EDGE ASPHALT CONCRETE PAVING CATCH BASIN STORM DRAIN PIPE i' UBLIC WO S .DEPT_ * ENGINEERING* STREETS *WATER * SE 5v ER * BUILDIN G * r'fT'1EM v0I dram ® vat checked IuD vo1 NJD 1 /01 KEG Architecture L d cep. Architecture a.0 ena+n.mma Ure.o Deign 50% REVIEW SUBMITTAL OUTFALL REPAIR :PROGRAM TITLE SHEET no date revision,