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HomeMy WebLinkAboutSEPA EPIC-200-82 - CITY OF TUKWILA / PUBLIC WORKS - STORM DRAINAGE OUTFALLSTORM DRAINAGE OUTFACE CHRISTENSEN ROAD EPIG200 -82 CITY OF TUKWILA OFFICE OF COMMUNITY DEVELOPMENT FINAL DECLARATION OF NON - SIGNIFICANCE Description of proposal Proponent Modification of Storm Drainage Outfall City of Tukwila Public Works Department Location of Proposal Christensen Road north of Baker Blvd. Lead Agency City of. Tukwila File No. EPIC- 200 -82 This proposal has been determined to ()h (tk /not have) a significant adverse impact upon the environment.:: An EIS (It(/is not) required under RCW 43.21C.030(2)(c). This.decision was made after review by the lead agency of a completed environmental checklist and other information on file with the lead agency. Responsible Official Brad Collins Position /Title Planning Director Date 12 -6 -82 COMMENTS: Terms and Conditions: Signature 1) All excavation within the drip -line of any shoreline tree grove shall be performed with hand -tools to protect existing root structures. 2) The storm drain trench will be bridged to allow- temporary access for at least one`(1) trail over the construction site at all times. Con= struction-activities will be limited for closure to one of the trails for no more .than. two..(2) :working days.•with the ground being covered at night to .allow- for access to both trials when 'construction is not in progress. • City of Tukwila 6200 Southcenter Boulevard Tukwila Washington 98188 MEMORANDUM TO: Brad Collins, Planning Director FROM: Mark Caughey, Associate Planner DATE: 6 December 1982 SUBJECT: EPIC - 200-82 (Christensen Road Storm Drain Modification) In response to the concerns raised in the threshold determination, we have received the attached response dated 3 December 1982 from Senior Engineer Phil Fraser. After reviewing the material contained in the response, I believe it appropriate to issue a conditional Declaration of Non - Significance according to the terms specified �n the DNS form. Your concurrence is recommended. 1908 City of Tukwila 6200 Southcenter Boulevard Tukwila Washington 98188 Frank Todd, Mayor DEC 61982 MEMORANDUM TO: Brad Collins, Planning Director ATTN: Mark Caughey, Associate Planner FROM: Phillip R. Fraser, Senior Engineer DATE: December 3, 1982 SUBJECT: Christensen Road Storm Drainage Modification - EPIC- 200 -82, Threshold Determination In response to the attached threshold determination by your department Public Works provides the following comments: In the Planning Department's checklist review inadequacies were found in four (4) subject areas. The appropriate information to insert in these areas which are to provide both complete explanation of activities of the project and mitigatin measures taken to allow for a declaration of non - significance are the following: EARTH (Checklist Section 2, Topic 1) King County Surface Water Management requires 15 lineal feet of rip rap, one to three feet in depth be provided on either side of the centerline of the new outfall structure in the dike wall (i.e. riverbank). Approximately 1600 cubic feet of dike (i.e. riverbank) will be displaced by rip rap or disturbed during the course of the storm drainage construction. In order to provide the protection of the riverbahk with a structural fill, the rip rap substitutes existing earthfill now constituting the riverbank. The construction activities for the outfall structure in the dike wall will be limited to low river conditions sor��hat there will be no need for temporary coffer dams or'1413 types of protection to the dike (i.e. riverbank) during the construction phase. This outfall construction will be achieved within a two to three day construction period. The final configuration of the slope of the bank will be superior to the existing sharp slope now provided. Currently, the river is depositing silts at this juncture of the riverbank and the slope will be trued at '.a 3 to 1 slope with rip rap materials. The current configuration of the riverbank being steep and delicate due to the deposits of silt do not represent the final configuration of the bank. It is anticipated in the • future to be deposited on the surface of the in -place rip rap for the new outfall structure. FLORA (Checklist Section 2, Topic 4) The final alignment of the outfall pipe and structure have been aligned in such a manner as to assure no removal . of any trees during the construction phase will. result. Also, the construction procedure to be ,called out when working in or through the root systems of the adjacent trees will be mandated to insure that the root systems are adequately protected in the construction phase. UTILITIES (Checklist Section 2, Topic 16) The City of Seattle Bow Lake Pipeline has been reviewed with the Seattle Water Department and all necessary precautions have been taken for the construction phase to ensure final design implementation will allow no interuptions of the Bow Lake Pipeline to occur. RECREATION (Checklist Section 2, Topic 19) Temporary or permanent access will be provided for both trails that are being constructed through the project during the constructiomiphase. The plan for the temporary closure and detour routing in construction is as follows: The storm drain trench will be bridged to allow for temporary access f_ or at least one (1) trail over the construction sitep�1�SThe close proximity of the two trails allows for a detour onto both trails immediately after the temporary detour across the construction site. This detour for the two trails will be provided as part of the contract to get from one trail to the other at all times from Christensen Road. The construction activities will be limited for closure to one of the trails for no more than two (2) working days with the ground being covered up at night to allow for access to both trails when construction is not in progress. The above description represents the trail closure /detour plan which will be part of the advertised construction contract documents. Requested at this time is modification to the submitted checklist to include the above information and a revised threshold determination be made accordingly. The Tukwila City Council is reviewing this project for advertisement at their regular meeting 12/6/82. xc: Dick Reeves, Wilsey & Ham Attachment (1) • • THRESHOLD DETERMINATION Christensen Road Storm Drainage Modification -- EPIC - 200 -82) Proposed Action The applicant, City of Tukwila. Public Works Department, is the initiating - agency in the construction of a direct storm -water outfall to the Green River from the vicinity of the "Tecton One" building onChristensen Road. The City -assumes lead agency status according'to WAC- 197-10 -205.. The storm drainage modification occurs in an.area which is fully developed and has a minimum surface elevation of approximately 20,5 at the intersection of Christensen Road and Baker Blvd,' Storm water. run -off collecting in this area presently is drained to the south in a 12 inch storm drain to..Strander Blvd and thence to an outfall into the Green River, The existing outfall is inadequate to dispose of heavy runpff amounts.and, when overtaxed 'the surface water ponds in the area of the intersection. The proposed storm drain modification will-provide a shorter, direct outfall to the river and, will prevent pondtng of back -up water from the existing, inad- .equate system in this area. The new outfall will be .equipped with an automatic' gate which will prevent back flow from the river by closing under conditions of maximum runoff and high river levels,' . • The checklist is intended to accompany the City's applications for construction permits as required by the State. Departments of Came, Fisheries and Ecology. A Shoreline Management Permit exempt ion is being negotiated due. to the relative urgency of completing the project prioe to winter weather conditions. Checklist Review . After reviewing the .checklist data and supporting diagrams as submitted, we find inadequacies i:n the following subject areas: EARTH (Checklist Section LI, Topic 1) The expanded project description in the attachment states that up to 1600 feet of riverbank will be disturbed in the course of construction, yet nowhere do we find a discussion or illustration of the extent to which this: disturbance will occur, The shoreline in this area is- steep and delicate, held in place by the large trees which grow nearby,_ Further data illustrating protection of river- bank resources..should be.provi'ded, as'should a reassessment of the need to tm- pact such an extensive reach of the riverbank, FLORA (Checklist Section IT, Topic 4) The project plan set calls for the removal of a "clump "' (grove ?) of trees on the riverbank which. can be avoided by shifting the alignment of the outfall a few feet northwesterly, The plan set should be so revised or a narrative provided to justify the proposed tree removal. • • Christensen Road Storm Drain Modification Page 2 UTILITIES (Checklist Section II, Topic 16) The proposed outfall will cross directly above the City of Seattle Bow Lake Pipeline. The checklist should reflect at least a "maybe" response as the replacement.outfall construction may have some impact.on water service due to temporary construction interruptions. RECREATION (Checklist Section II, Topic 19) The project diagram indicates that the proposed outfall will traverse both city recreational trails and disrupt their serviceability during construction As these trails. are in use year- around:.by the public, a plan for temporary closure and detour routing of the trails should be filed with the checklist. RECOMMENDATION The magnitude of this project is relatively minor if managed properly and should be granted a Declaration of lon- Si :gnifi•cance, However, before the final declaration is issued, the following additional - data should be present, ed in satisfactory form to the Responsible Official: 1) Diagram depicting riverbank disturbance impacts 2) Tree removal justification narrative or revised alignment of outfall route 3) Description of project impacts on Bow Lake Pipeline 4) Temporary trail closure /detour plan City of Tukwila 6200 Southcenter Boulevard Tukwila, Washington 98188 Public Works Department , 433 -1850 December 6.,1982 Byron G. Sneva, Director Regional Manager; • • James Christensen Road`Storm'Drainage Modification - Declaration.of Emergency __ The. City; of. Tukwila.. is"now•preparing to select the•contractor_and go to -construction''as soon• as, possible for the James Christensen Road Storm Drainage Modification per our letter:of November 9th; ".1982.;., by:.which a declaration'of emergency 'was provided`to proceedwith the Questions have been received .from•your. department questioning the -basis by which this declaration Off-emergency-has been.provided...On,•10 /3/82 flooding conditions in. the Christensen Road /Baker Boulevard..intersection occurred due to wet weather. conditions. -. -The flooding conditions make part of the City's roadway system unusable and threaten both the public system and utilities•and adjacent private properties. 'I trust that this information provides adequate justification for the declara- tion of emergency provided in the November. 9th, 1982 letter_by the City of Tukwila. If you have any questions to call me at 433 - 1856. regarding this matter please do not hesitate Sincerely, . Phillip. :R. Fraser;' Senior Engineer.., xc: ' Mayor Van .Dusen Byron.G. Sneva, Public Works Director /Brad Collins, Planning Director Mark Caughey, Associate Planner .Dan Woo.,- City Attorney'. Dick Reeves, Wilsey & Ham. file City of Tukwila 6200 Southcenter Boulevard Tukwila, Washington 98188 Public Works Department 433 -1850 1908• November 9, 1982 Department, of Ecology ATTN: Mr. Robert McCormick, Regional Manager.?: 4350 -150th Avenue N:E. Redmond, Washington 98054 Byron G. Sneva, Director. Re: James Christensen Road Storm Drainage Modification:- Declaration of Emergency • Dear Mr..McCormick: The. City of Tukwila is now in. the final stages of contract document preparation for the modification of'the storm drain system in James Christensen Road. Attached you will find the plan documents showing the type of modification to occur.. Currently,. the flooding conditions in the Christensen Road /Baker Boulevardintersection and the Strander Boulevard /Andover Park.East inter- section, two (2) high -use commercial /industrial roadways, are :projected to occur at high river and west weather conditions. The existing storm drain- age basin flows` under high storm run- off /surcharged river conditions.. By the modification :to the existing system (per the attached plan), diverting a portion.of the storm run -off to the north via -a new outlet into the Green River in Christensen Road, the potential for flooding will be•significantly reduced. • To provide this drainage modification prior to the onset of wet weather/high river conditions, construction must be carried out no later than December, 1982. :Recognizing the time restraints to carry..out'environmental reviews . and permit processes (i.e., Shoreline Management. Permit), the Directors of Planning and Public Works for the City have declared an, emergency with respect to potential flooding conditions in Christensen Road /Baker Boulevard and Strander Boulevard /Andover Park East. By this declaration of emergency, the City requests the agencies involved in•permits and plan reviews waive or accelerate their processes per R.C.W.. 197.10.180 to allow the earliest .advertisement and construction schedule possible for the•proposed storm drain modification. • • Your cooperation in this matter will be most appreciated. If you have any questions regarding this matter do not hesitate to call me at 433 -1856. Sincerely, Phillip R. Fraser, Senior Engineer xc: Mayor Gary L. Van Dusen Byron G. Sneva, Public Works Director Brad Collins, Planning Director. \' Mark Caughey, Associate Planner Dan Woo, City Attorney George Wannamaker, King County Surface Water Management Division Rick Strotter, Washington State Game Department Washington State Fisheries Department 'Dick Reeves, Wilsey & Ham Seattle Water Department, ATTN: Mr.' Schmidt 'file Enclosures (Exhibits A through D) PRF: jst L:1 ki 3 -1605- 2801 -21 '` • • EXHIBIT A rJ IL ri , • r cTY OF TUWILA •L I �-- ('-- PR O J E CT ST •• f....,•••*, a • • 3- 160501 -21 EXHIBIT "C" PROJECT DESCRIPTION James Christensen Road Storm Drain Modification The.area of the proposed storm drain modification is a fully developed area with a minimum surface elevation of approximately 20.5 at the intersection of Christensen Road and Baker Boulevard. Storm water runoff collecting in this low area presently is drained to the south in a 12 inch storm drain to Strander Boulevard and thence to an outfall into the Green River immediately south of of Strander Boulevard. The outfall is inadequate to dispose of heavy runoff amounts and, when overtaxed, the surplus water ponds in the area of Christensen Road and Baker Boulevard. The proposed storm drain modification will provide a shorter, direct out - fall to the river and prevent the ponding of back -up water from the inadequate Strander Boulevard system in this area. Under a more extreme condition of maximum runoff and high river levels, the automatic gate on the outfall will close preventing back flow from the river. A line plug will prevent back flow from Strander Boulevard. Provision is made in the plan for emergency pumping of this isolated area under this condition. The land uses within 1,000 feet of the project area and westerly of the Green River are commercial services, retail, wholesale distribution, and project manufacturing in all directions. Two small riverfront park areas are locat- ed easterly of the site and southerly of the site. A river trail and bike path follows the river bank and crosses the project site near the outfall. East of the river channel land is generally undeveloped between the river and the West Valley Highway except for two single - family residential units along the highway. DR /ljr /B -10 Pt .112 71.3N,R•V7, wV 444' r-==ril. " ,...„. , kc, 41 .....— ,,, --WI,/ ,o' ' 40 e.: jr-Arma ffgrorveiflOtt2.1 , N, .•. 0 ;44 t : ___1_ 1 I , 3 4-4 0 NI, 9.1 $ee 7.-tiN, R.Z. .• •• • g -eT•O'T .3-7)12 "CAW .5-47 30 20 fAtlr lo• Avar.,.7177. Ceelf 30C-0,1e, ... st_ eze, f'!"•!"*...V. 70,11136,EV7 1:11,7 ALAT I 4 ot venom tor. /tat etyr,sr-oune 0 0 4 4 - _ \ - _ — - s'ewsze-,' i:tgeie7s7 e -- ircfre■ '6'.2.:14--aorS=7TS tAxel.), 44. ................................ 447,X 171.10,600e0,0, ti .• ----- .----- —E1 1 i ..' __"_• 70 3 _: ",„' I -. - . 0 -'7 •,, i ' - 14,/ V v .-; .,.•000 / eeW . ki I *4 •" / JAMES CHRISTENSEN ROAD / Arze7 „raw," eireaeo tewros co n..,..neae,MWsr.eVteMI.7 CAP*1.14 STA27..7" • 11072, 1 Alt Maa•I &MN API, ASV& 4,2' ZIVY274.1-1W1 Vs.rif mommillIMEEMENEMEMMMMINEE. i'MPIIMMDEMLY- •• . ses4 dry, rr,C Ai Me) M.. AS Of GrI"-Z/rAt400-f0% ca/rze-•1ce;!ieT4e eiere ..raos otar TM' 4,/,,r,r) /0 /S. ter-NE.10,17. •-• • 1 ---- • • • awe goo sm root CRAme--ertla,,,•ffr - • 3-1.0r.se•54 ',MAW., .9.41.1.6C 0117/7,4,4, id. WM • • • • i 1 7,17.77.e0.-seari-71X,07,-or 0.../ tem, - M7.3 -4,,re..1. /-77 /TV, , owe, Gaff a'eplAP 44, ' ' t .23•74,1.0, roots, tor ' t coerce •••• -.Om tosir,, a ire 12 /7.10-- I,Ct. 12 ze g 31 :1 - ia.'''.g.t. - - — - -- — /4' /70, or ,e-s. /...., ' — le /7.0(1,47),./10 into 12 As A3-5 111,11Iteel "QM EXHIBIT B • 0 .7. z 0 0 cc c:3 z w 1— Z rc < cc cn 2 w cc 2 0 a , I I ---- —7 1/1", lk, 4. let (tar , . e • ---:-- c / a, oenotheo rAnct v Atee, rif 4- ettontv Iboarme evrr aor /Par ofvFVEZ eted..otr_o Mf4f0. siettoN4 TYPICAL PAVEMENT PATCH OTT TO IICALII .1120/e /7/.. AO, 00, SON SAILIS _ t130,11 SO- /00. eS • -CM /00 • /30.—' SLOPE PROTECTION & OUTFALL MANHOLE DETAIL NOT TO SC•LI EXHIBIT B 3 0 — 0 • < Z CI) 15 z0 UJ 2 0 z Tr ZE • cc cn UJ CC < 3-180.-11001.40-0 •1111 I 2 2 PROPERTY OWNERS . James Christensen Road Storm Drain Modification Texaco Inc. Tax Dept. 3350 Wilshire Blvd. Los Angeles, California 90005 Crim Investments Inc. 900 4th Avenue #2900 Seattle, Washington 98164 Phil Shanedling 9350 Wilshire Blvd Suite 315 Beverly Hills, California 90212 Phil Shanedling.. . 9350 Wilshire Blvd Suite 315 Beverly Hills, California 90212 CB Building Venture .405 S. Stevens • Spokane, Washington 99204 Puget Sound Blood Center Terry & Madison Seattle, Washington 98104 King County Central Blood Bank Terry & Madison. Seattle, Washington 98104 Tri i and Corp. 1411 4th Avenue Suite 1120 'Seattle, Washington 98101 Riverview Plaza T1 Raymond A. Feichtmier 16040 Christensen Road Tukwila, Washington 98188 Riverview Plaza fl Raymond A. Fei chtmier 16000 Christensen Road - Tukwila, Washington 98188 City of Seattle Water Department Exchange Building 821 2nd Avenue Seattle, Washington 98104 City of Tulwila 6200 Southc.enter Blvd Tukwila, Washington 98188 Robert D. Van Woerden 27625 10th Avenue S. Redondo, Washington (8054 Andover Industrial Park fl Lot 4 less S. 28 ft Andover Industrial Park fl 5. 28 ft. Lot 4 plus N. 200 Lot 5 Andover Industrial Park 4 Lot 5 less N. 200.ft Andover Industrial Park #1 Ptn Lot 6 N'ly of the line beg N00° 12'.09"W - 75 ft. from S.W. corner, thence S 89- 40'24 "E 273.28 ft to E'ly line Andover Industrial Park #1 Ptn Lot 6.S'ly of line beg N00 °12' 09 "W = 75 ft. from S.W. corner, thence S89 °40'24 "E 273.28 ft., plus lot 6 Andover Industrial Park f2 Andover Industrial Park T2' Lots 4,5 (Ptn Taxable) Andover Industrial Park f2 Lots 4,5 (exempt) Andover Industrial Park t2 Lot 10 less S'ly 216.99 ft Parcel 4 plus Ptn Parcels 2,3,Tukwila S.P. 78 -16 -55 Parcel 1 plus Ptn Parcels.2,3, Tukwila S.P. 78 -16 -55 Bow Lake Pipeline R/W Tract A,B; Tukwila S.P. 78-16-$S Riverbank Parcel N'ly tract A of Tukwila S.P. 78 -16 -SS • • City of Tukwila: 6200 SOLithcenterBoule■iard • Tukwila, Washington 98188 F'ublic Works Department 433-1850 November 30, 19827-.J.1::;',"...'1.' Wilsey & Ham ATTN Mr. Dick Reeves Central Park .Building • -.1980-112.th Avenue ellevue?,- .• • :'.t" ,•-•;• • "' 3 - ; - • .,,,77.,t4,-;%, • •-•••• . ••• . - . . Re;..:....-,ChristensenRoad..Storm.:Drainage 7- •••1 --;'••••••:;17;:-.'Lr-.1-1•(- • • •••':Y ' • •-• Modification •:. ' •, • .. Dear Mr. Reeves: "r:t-.7•-,,,-; • • - ' .: • • • • Per our conversation 11/29/82 enclosed is my suggested modification: to the outfall design...location including the 15 foot minimum rip rap ' requirement on either: side of the outfall structure The ,purpose. of • _ this relocation is to avoid the grove of trees to the east and still, stay within the City's right-of-way. - Requested.: at this time is your review of this suggested relocation and modification of the plan and profile drawings as you consider appropriate to meet,all the require- ments for the project design. If you have any questions regarding this matter please do not hesitate to call me at 433-1856. Sincerely, Phillip L Fraser,- Senior Engineer xc: /Mark Caughey, Associate Planner - file Enclosure (1) PRF:jst • • 6:W %4 SEC. 24, T. Z3N.j ��E. l�Y.iYl. N.� EDGE OF!-VArew EL/ST 8/1/69 LEVEL 3.4 iB 3082) PG9CE /T /P/o9P 49 /N /o'EAS/DE OFP /ee g FA141 TOPO,Q9,YX TO R /!/ER' BO77i',W • SEE OET99 /G s//T 2 , • zf /ST /NG THE ' /STURB) /ST/Ns :5-3-74-A.\ RD CX /St /NG D /ST i , (0o NOT 0/67d8 A T� • G(/ ) i \` 1 3sSZr • • (DO OT 1OLTPyT ' �49 _ I•••.••• C�iS� /NGAS��CAS�CvRB�` •� R /6!/ � Ro.oe/CEO = elio/As 5 STi9T /ON /NG' L //YE� .SZ .. 5/20. G3 /2 7/ZT T4PE1114V(sQJ MI/ 47 ttt tec - 'L - - MI r MI r --r STA. Sf< ST.9 ,5730, 82T T, */i #2 TB. N1. 41SD4 TO, ,04r23 77-0/W ST ... ............................... ...................... ........... ............................ • ............................ HYDRAULIC PROJECT APPROVAL RECIPIENT: Recent court rulings, including the Orrick decision (Boldt, Phase II), have emphasized our authority and dictated that we shall monitor all activities in state waters. This is to remind you that although you have been issued an approval for work involving state waters, failure to comply with all provisions, including time limitations, is a gross misdemeanor. At any time the authorized activity is being performed, the approval and all attachments and amendments must be on the job site and available for inspection. . . .. . .. ..... .. . .................... ............................ .............. ............................. • • ......... ............ • . .............. ..................... • • ........ .............................. . • DEPARTMENT OF GAME 600 Capitol Way North Olympia, Washington 98504 filDRAULIC PROJECT APPROVAL R.C.W. 75.20.100 November 19, 1982 (Applicant should refer to this date in all correspondence) PAGE 1 OF 1 PAGES DEPARTMENT OF FISHERIES General Admin. Bldg. Olympia, Washington 98504 10 LAST NAME FIRST 19 CONTACT PHONE(S) 1 2 City of Tukwila 433 -1856 1 2 3 4 3 STREET OR RURAL ROUTE e e WRIA 6200 Southcenter Boulevard A B C DB_O9.0001 CITY STATE ZIP Tukwila, Washington 98188 14 15 16 17 F C G • 12 STREAM OR LAKE TRIBUTARY —TO Duwamish River Green River TYPE OF PROJECT 11 • QUARTER SECTION SECTION 13 TOWNSHIP RANGE (E -W) •23N 4E COUNTY King County Storm Outfall SW 1/4 24 TIME LIMITATIONS: THIS PROJECT MAY BEGIN - 5 AND 6 BE COMPLETED BY: 31, 1983 January 1, 1983 December THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. The person(s) to whom this approval is issued may be held liable for any loss of or damage to fish life or habitat which results from failure to comply with the provisions or intent of this approval. Failure to comply with the provisions of this approval is a gross misde- meanor punishable by fine and /or imprisonment. The Departments of Fisheries and Game reserve the right to make additional restrictions or conditions or revoke the approval if deemed necessary by the departments for the protection of fish life. These departments cannot be held liable for any property damage which might occur as a result of this project. This approval pertains only to the provisions of the Fisheries and Game Codes. Additional authorization frbm other public agencies may be necessary for this project. 1. No equipment shall enter or operate in the water. 2. The river bank shall be armored at the point of discharge to avoid erosion. Excess excavation for placement of.armor shall be deposited at a location above high water areas. Location: Christenson Road near Longacres. SEPA: Issuance of this approval is exempt from SEPA - Emergency Action. cc: Trosper - Johns, Patrol DEPARTMENT OF FISHERIES �G�� � DEPARTMENT OF GAME DIRECTOR SECTOR GAM 111 (Rev. 9/77) •348• THRESHOLD DETERMINATION Christensen Road Storm Drainage Modification -- EPIC - 200 -82) Proposed Action The applicant, City of Tukwila Public Works Department, is the initiating agency in the construction of a direct storm-water outfall to the Green River from the vicinity of the "Tecton One" building on Christensen Road. The City assumes lead agency status according to WAC- 197 -10 -205. The storm drainage modification occurs in an area which is fully - developed and has a minimum surface elevation of approximately 20.5 at the intersection of Christensen Road and Baker Blvd. Storm water run -off collecting in this area presently is drained to the south in a 12 inch storm drain to Strander Blvd and thence to an outfall into the Green River. The existing outfall is inadequate to dispose of heavy runpff amounts and, when overtaxed, the surface water ponds in the area of the intersection. The proposed storm drain modification will provide a shorter, direct outfall to the river and will prevent ponding of back -up water from the existing, inad- equate system in this area. The new outfall will be equipped with an automatic gate which will prevent back -flow from the river by closing under conditions of maximum runoff and high river levels. The checklist is intended to accompany the City's applications for construction permits as required by the State Departments of Game, Fisheries and Ecology, A Shoreline Management Permit exemption is . being negotiated due to the relative urgency of completing the project prior to winter weather conditions. Checklist Review After reviewing the checklist data and supporting diagrams as submitted, we find inadequacies' in the following subject areas: 'EARTH (Checklist Section II, Topic 1) The expanded project description in the attachment states that up to 1600 feet of riverbank will be disturbed in the course of construction, yet nowhere do we find a discussion or illustration of the extent to which this disturbance will occur. The shoreline in thi's area is steep and delicate, held in place by the large trees which grow nearby, Further data illustrating protection of river- bank resources..should be provided, as should a reassessment of the need to im- pact such an extensive reach of the riverbank, FLORA (Checklist Section II, Topic 4) The project plan set calls for the removal of a "clump " - (grove ?) of trees on the riverbank which. can be avoided by shifting the alignment of the outfall a few feet northwesterly, The plan set should be so revised or a narrative provided to justify the proposed tree removal. Christensen Road Storm Drain Modification Page 2 UTILITIES (Checklist Section II, Topic 16) The proposed outfall will cross directly above the City of Seattle Bow Lake Pipeline. The checklist should reflect at least a "maybe" response as the replacement outfall construction may have some impact on water service due to temporary construction interruptions. RECREATION (Checklist Section II, Topic 19) The project diagram indicates that the proposed outfall will traverse both city recreational trails and disrupt their serviceability during construction, As these trails are in use year-around by the public, a plan for temporary closure and detour routing of the trails should be filed with the checklist. RECOMMENDATION The magnitude of this project is relatively minor if managed properly and should be grInted a Declaration of •'lon- Significance. However, before the final declaration is issued, the following additional data should be present- ed in satisfactory form to the Responsible Official: 1) Diagram depicting riverbank disturbance impacts 2) Tree removal justification narrative or revised alignment of outfall route 3) Description of project impacts on Bow Lake Pipeline 4) Temporary trail closure/detour plan • CITY OF TUKWILA ENVIRONMENTAL CHECKLIST FORM This questionnaire must be completed and submitted with the'application for permit. This questionnaire must be completed by all persons applying for a permit from the City of Tukwila, unless it is determined by the Responsible Official that the permit is exempt or unless the applicant and Responsible Official previously agree an Environmental Impact Statement needs to be completed. A fee of $50.00 must accompany the filling of the Environmental Questionnaire to cover costs of the threshold determination. I. BACKGROUND 1. Name of Proponent: City of Tukwila 2. Address and Phone Number of Proponent: 6200 Southcenter Boulevard Tukwila, Washington 98188 Phone 433 -1856 3. Date Checklist Submitted: September 20, 1982 4. Agency Requiring Checklist: City of Tukwila Planning Department 5. Name of Proposal, if applicable: Christensen Road Storm Drain Modification 6. Nature and Brief Description of the Proposal (including but not limited to its size, general design elements, and other factors that will give an accurate understanding of its scope and nature): Modification to existing-storm drain system to partially reliave adjacent system through new river outfall. 7. Location of Proposal (describe the physical setting of the proposal, as well as the extent of the land area affected by any environmental im- pacts, including any other information needed to give an accurate under- standing of the environmental setting of the proposal): On James Christensen Road, north from Baker Boulevard to new outfall into Green River. 8. Estimated Date for Completion of the Proposal: Mid 1988 9. List of all Permits, Licenses or Government Approvals Required for the Proposal (federal, state and local): (a) Rezone, conditional use, shoreline permit, etc. (b) King County Hydraulics Permit (c) Building permit YES X NO YES X NO YES NO X • (d) Puget Sound Air Pollution Control Permit YES NO X (e) Sewer hook up permit YES NO X (f) Sign permit YES NO X (g) Water hook up permit YES NO X (h) Storm water system permit YES x NO (i) Curb cut permit YES NO X (j) Electrical permit (State of Washington) YES NO X (k) Plumbing permit (King County) YES NO X (1) Other: Approval of Seattle City Water Department to rrncc nver Bow Lake Pipeline. 10. Do you have any plans for future additions, expansion, or futher activity relatedto or connected with this proposal? If yes, explain: No 11. Do you know of any plans by others which may affect the property covered by your proposal? If yes, explain: No 12. Attach any other application form that has been completed regarding the pro- posal; if none has been completed, but is expected to be filed at some future date, describe the nature of such application form: Attached copies of, 1) Flood Control Zone Permit, 2) Department of Game Permit, 3) Department of Fisheries Permit. Shoreline Permit to be submitted. II. ENVIRONMENTAL IMPACTS (Explanations of all "yes" and "maybe" answers are required) 1 Earth. Will the proposal result in: (a) Unstable earth conditions or in changes in geologic substructures? YES MAYBE NO (b) Disruptions, displacements, compaction or overcover- ing of the soil? X (c) Change in topography or ground surface relief fea- tures? (d) The destruction, covering or modification of any unique geologic or physical features? X X • • (e) Any increase in wind or water erosion of soils, either on or off the site? (f) Changes in deposition or erosion of beach sands, or changes in siltation, deposition or erosion which may modify the channel of a river or stream or the bed of the ocean or any bay, inlet or lake? YES MAYBE NO Explanation: Temporary disruption of street paving and river bank during construction. Temporary increase in soil erosion potential to be mitigated by proper construction techniques. (See attached description) 2. Air. Will the proposal result in: (a) Air emissions or deterioration of ambient air quality? (b) The creation of'objectionable odors? (c) Alteration of air movement, moisture or temperature, or any change in climate, either locally or regionally? Explanation: X X X X X 3. Water. Will the proposal result in: (a) Changes in currents, or the course or direction of water movements, in either marine or fresh . waters? X (b) Changes in absorption rates, drainage patterns, Dr the rate and amount of surface water runoff? X (c) Alterations to the course or flow of flood waters? X _ (d) Change in the amount of surface water in any water body? X (e) Discharge into surface waters, or in any alteration of surface water quality, including but not limited to temperature, dissolved oxygen or turbidity? X _ (f) Alteration of the direction or rate of flow of ground waters? • _ (g) Change in the quantity of ground waters, either through direct additions or withdrawals, or through interception of an aquifer by cuts or excavations? _ X • • YES MAYBE NO (h) Deterioration in ground water quality, either through direct injection, or through the seepage of leachate, phosphates, detergents, waterborne virus or bacteria, or other substances into the ground waters? X (i) Reduction in the amount of water otherwise avail- able for public water supplies? X Explanation: There will be no change in the amount of impervious area in the system. The result of the project will be to divert storm water already in underground storm sewers from an inadequate existing outfall in the Green River to a proposed new outfall in the Green River. There will be no overall change in quantity or quality of storm water. 4. Flora. Will the proposal result in: (a) Change in the diversity of species, or numbers Qed-Q`'°< x- )(( of any species of flora (including trees, shrubs, grass, crops, microflora and aquatic plants)? (b) Reduction of the numbers of any unique, rare or . endangered species of flora? X (c) Introduction of new species of flora into an area, or in a barrier to the normal replenishment of existing species? X (d) Reduction in acreage of any agricultural crop? X Explanation: 5. Fauna. Will the proposal result in: (a) Changes in the diversity of species, or numbers of any species of fauna (birds, land animals including reptiles, fish and shellfish, benthic organisms, insects or microfauna)? (b) Reduction of the numbers of any unique, rare or endangered species of fauna? (c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement of fauna? (d) Deterioration to existing fish or wildlife habitat? X Explanation: • • YES MAYBE NO 6. Noise. Will the proposal increase existing noise levels? X Explanation: 7. Light and Glare. Will the proposal produce new light or glare? X Explanation: 8. Land Use. Will the proposal result in the altera- tion of the present or planned land use of an area? Explanation: 9. Natural Resources. Will the proposal result in: (a) Increase in the rate of use of any natural resources? (b) Depletion of any nonrenewable natural resource? Explanation: 10. Risk of Upset. Does the proposal involve a risk of an explosion or the release of hazardous substances (including, but not limited to, oil, pesticides, chemicals or radi- ation) in the event of an accident or upset conditions? Explanation: 11. Population. Explanation: • • Will the proposal alter the location, distribution, density, or growth rate of the human population of an area? 12. Housing. Will the proposal affect existing housing, . or create a demand for additional housing? Explanation: 13. Transportation /Circulation.' Will the proposal result (a) (b) (c) (d) Generation of additional vehicular movement? Effects on existing parking facilities, or demand for new parking? .Impact upon existing transportation systems? Alterations to present patterns of circulation or movement of people and /or goods? (e) Alterations to waterborne, rail or air traffic? (f) • Increase in traffic hazards to motor vehicles, bicyclists or pedestrians? in: YES MAYBE NO Explanation: There will be a temporary impact due to construction activity but no permanent effect. 14. Public Services. Will the proposal have an effect upon, or result in a need for'new or altered governmental services in any of the following areas: (a) Fire protection? (b) Police protection? (c) Schools? (d) Parks or other recreational facilities? (e) Maintenance of public facilities, including. roads? X X X • • YES MAYBE NO (f) Other governmental services? X Explanation: 15. Energy. Will the proposal result in: (a) Use of substantial amounts of fuel or energy? (b) Demand upon existing sources of energy, or - require the development of new sources of energy? Explanation: 16. Utilities. Will the proposal result in a need for new systems, or alterations to the following utilities: (a) Power or natural gas? (b) Communications systems? (c) Water? (d) Sewer or septic tanks? (e) Storm water drainage? (f) Solid waste and disposal? Explanation: 17. Human Health. Will the proposal result in the crea- tion of any health hazard or potential health hazard (excluding mental health)? Explanation: X X • . YES MAYBE NO 18. Aesthetics. Will the proposal result in the obstruc- tion of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically of- fensive site open to public view? Explanation: 19. Recreation. Will the proposal result in an impact upon the quality or quantity of exist- ing recreational opportunities? Explanation: 20. Archeological /Histroical. Will the proposal result in an alteration of a signifi- cant archeological or his- torical site, structure, object or building? Explanation: CERTIFICATION BY APPLICANT: X t7VA\v I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non - significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part. Signature and Title g. /,J f/] /9r0 - //z gpov -8- ea /5;/912 Date X CITY OF TUKWILA ENVIRONMENTAL CHECKLIST JAMES CHRISTENSEN ROAD STORM DRAIN MODIFICATION II. ENVIRONMENTAL IMPACTS 1. Earth (b) An area of approximately 1,600 S.F. along the bank of the Green River will be disturbed during installation of the river outfall drain. This work will be performed during low river levels and all excavated material will be removed by truck from the site (except for that portion to be reused as compacted backfill). The river bank in the disturbed area will be finished off with a rock rip - rap protective covering. Level areas near the top of bank will be restored to pre- construction condition and waste material will be prevented from entering the river channel. Excavated material from the street areas, unless re -used for backfill, will be removed from the site by truck. Debris and slicks from the work will be prevented from entering the river and will be disposed of by the con- tractor. • ECE VED C9T" nr Ti WWII A w F- EB LJJ 0 0 1 CC •1r•• • PON, ;11 jl 11;g 11.1 '11 • sys-;ii...-=';i7;• • s •• ■••11•I It y• Iv •``' • • -1 te" • Os • ' 1 i WILSEY&!IkM INC. Earl P. Wilsey (1892 -1957) Central Park Building 1980 112th Ave. NE. Bellevue, WA 98004 Telephone (206)454 -3250 'October 15, 1982 File No. 3-1605-2801-21L__— King County Department of Public Works 'Surface—Water Management Division King._,County Administration Building Seattle, WA 98104 RE: FLOOD CONTROL ZONE APPLICATION, CITY OF TUKWILA Gentlemen: Toll Free Numbers Everett 353 -8837 Tacoma 572 -9982 Enclosed herewith is a Flood Control Zone application by the City of Tukwila in duplicate, for the construction of a storm water outfall into the Green River adjacent to James Christensen Road in the City of Tukwila (S.W. 1/4 Sec. 24, T. 23 N., R. 4E.). The purpose of this outfall is to partially relieve flooding problems in the area of Christensen Road and Baker Blvd. caused by backup from the present outlet to the south. Also enclosed are three prints showing the proposed construction details of this outfall together with 3 copies of the environmental checklist and portions of the preliminary study report which preceeded the preparation of this application. It is requested that you review this application and forward it for approval to the Department of Ecology. If you have any questions, or would like further information, please call me at your convenience. Very truly yours, WILSEY & HAM, INC. Dick Reeves, P.E. Senior Associate DR /kss - Enclosures cc: City of Tukwila, Phil Fraser engineering / planning / surveying / em-lronmental analysis / landscape design Offices located in: Bellevue Washington • Tacoma Washington • Portland, Oregon • Foster City, California • !ncuC;cio: f' Tc :;lone No. • • FLOOD CONTROL ZONE APPLICATION NO. Dated *APPLICATION is hereby made by . ..T.he_..Ci_ty..o.f...Tukwi_l.a L4.33- 185 &1 (Individual, corporation, etc.) of 6200 Southcenter Blvd. , Tukwila, Wa ; for permit to construct and thereafter operate (Post office address) 981-88- (Construct, reconstruct, modify) and maintain a storm water outfal l (Nature or works: bridge, dike, road, revetment, logging works, gravel pits, etc.) James Christensen Road Storm Drain Modification to be known as (Name of works, structures or improvements) located in SW 1/4 Section 24 , Township 23 North, Range 4 (E) (W) .W.M., (N1 NW' /i, etc.) in the City of Tukwila (Location with reference to nearest town or well known locality) all or portion of which will be located upon the banks or in and over the channel or over and across the flood plain of the Green River a tributary of the Duwami sh River (Name of stream or body of water) (Name of stream or body of water) in King County, Washington This permit is sought in perpetuity Flood Control Zone No. 2 (In perpetuity; or, if temporary, state number of years) Definite location and plan of the proposed works, structures or improvements are shown on attached sheets numbered 1 to 2 , inclusive, which are parts of this application. Construction will commence and will be completed (Date) (Date) Remarks: This new river outfal l is intended to provide relief for a portion of an overloaded existing storm drain system in the Southcenter /Andover Park area of Tukwila. •SEE REVERSE SIDE FOR INSTRUCTIONS City of Tukwila (Applicant) ECY 050.1 -5 Plans Examined and Reported by Field Examination and Report by Application Returned for Alteration PERMIT Recommended by • Issued Name Date ECY 050.1 -5 DEPARTMENT OF GAME 600 Capitol Way North Olympia, Washington 98504 HYDRAULIC PROJECT • APPLICATION l (R.C.W. 75.20.100) PLEASE PRINT OR TYPE DO NOT WRITE IN SHADED AREA DEPARTMENT OF FISHERIES General Admin. Bldg. Olympia, Washington 98504 IQ LAST NAMF FIRST _ 19 CONTACT PHONE(S) im 2 - -- t 2 3 Q Tukwila, City of 1 433 -1856 STREET OR RURAL ROUTE 20 ® 6 0 WRIA A B C D 6200 Southcenter Boulevard CITY STATE ZIP Tukwila, Washington 98188 ® STREAM OR LAKE TRIBUTARY TO Duwamish River F o Green River 13 QUARTER SECTION SECTION TOWNSHIP RANGE (E -W) 23N 4E WM 11 TYPE OF PROJECT Outfall SW 1/4 24 COUNTY Storm DESCRIPTION OF WORK, METHOD, AND EQUIPMENT Construct storm drain outfall to the Green River by open cut with compacted.backfill and rock face over river slope. Backhoe' and' compaclo'rs' pe'r' a't'tached' d'rawi'ngs.' ' ' ' ' ' ' (IF NECESSARY USE BACK OF THIS SHEET OR ADDITIONAL SHEETS) DISTANCE; DIRECTIONS TO PROJECT SITE FROM NEAREST TOWN In City of Tukwila off James Christenson Road 500 ft. north of Baker Boulevard PROPOSED STARTING DATE February, 1983 PROPOSED FINISHING DATE June, 1983 PARTICIPATING ORGANIZATIONS (IF ANY) g SEPA AGENCY /DATE: 21 n YES X No 22 $ over $5,000 Zone Permit a plied for - Shoreline Permit applied for. ® OTHER PERMITS King County Flood Control IT IS UNDERSTOOD THAT NO WORK WILL ATUR a 0 id DATE BE STARTED UNTIL A SIGNED APPROVAL _- / 2 �r�� 4L /3/46/e2-• IS RECEIVED. C/►'rv+'+' "'-' TIME LIMITATIONS: • WILSEYf1AM INC. Earl P. Wilsey (1892 -1957) Central Park Building 1980 112th Ave. N E. Bellevue, WA 98004 Telephone (206)454 -3250 October 15, 1982 File No. 3 -1605- 2801 -221/ State of Washington Department of Fisheries 115 General Administration Building Olympia, -Washington 98504 Toll Free Numbers Everett 353 -8837 Tacoma 572 -9982 RE: HYDRAULIC PROJECT APPLICATION, CITY OF TUKWILA Gentlemen: Enclosed herewith is a hydraulic project application for the City of Tukwila, for a permit to construct a storm water outfall into the Green River in the SW 1/4, Sec. 24, T.23N., R.4E., W.M. Also enclosed ar two se howin• ie construction details for this work. hese drawings are the same as those submittes o ng iun y Surface Water Management Division with an application for a Flood Control Zone 'ermit. An Environmental Checklist has been prepared for the City of Tukwila, however, no action has, as yet, been taken. It is requested that you review this application and issue a permit to the City of Tukwila for this construction work. If you have any questions or need further information, please call me at . your earliest convenience. Very truly yours, EY & HAS "11.' Dick Reev-s, P.E. Senior Associate DR/ l j r /A- 36 Enclosure 0,14a4451• PAeofei, SL:1� 1 .FA ©tt4r. ac,,. 614So4 2,°I 01 cc: Phil Fraser, City of Tukwila engineering / planning / surveying / emviromnental analysis / landscape design Offices located in: Bellevue Washington • Tacoma Washington • Portland, Oregon • Foster City, California EQSEOFMATE4 Eu97,9/[fFOEN1 .3d (3Ja,&2) e- s. .BIPA9N..tl r-mar 7a .93&992 OfdlAtt' SEE OEZA/G .34 2 . . Apr oftvf. • >rl A/W Ph770UCEO= fjpA . 6 .57A7Va ' ' C /NE- • • Sr «,51,7763 /97 /LT199e d9Y(3T9, I_S, 0%23A1104( , W,lt APPyOA &239)7ON OF : . /� /00 YEAy d 4IO C/NE'4 3'4) t v V �. I - .0 ... i• _— _ W — - r_t •srd "/KI' :. � j B ELPt rEA rsaIi AeN rolLtt B f uNNT /5-1 E- _tt N _ .r s c K w n r a e z.~�.tY.,.' ` .u3 x./ •w c_ r A�. C .. ee f'Jr�6 w om......... .._,:44;_,L..... 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G7' /E /4.05, - 5 /E. /7.1/ CRAOLE 2 1'.3O w /A9.T(' 3'TN/CNNESS O/ ETNAS29Af - POOLYAC 04ER TOPOF 60'. NATER AYA /N ... . STA 7193, ^ TYPE Ill NN(49 J . lE /7 /6- N3PC.P. .._. L /7 /6; -•9' /1 -CP' /1JrYEC7 E/ /s7B-Eor;e0 /E /920 31/57" CB °4'S7/1.•91SB7 i3:4T• • -/E /733 -N /1 -CP.: 3 ; /6'1733 -5 - /S'C y;. p-.1 '. • /3 . /7.39 /EO17J-Nwra, sa%- "-, °- O/3A70 / (a7)EE E i ..- M/ /1'CP .9 NEN' SRA6e- E! /S7 AfY lS1A /01251'45;f7- I3 /700;.N /5'C 9 - I - 73/747 -H'73 J Q73T 1 .. /6.9•3 /2SO(fCO<p Ezl9Tf1 Date 7 /lA'd2 ScAer,...g, "I' 'se • Designed an! Drawn aR A/P4' • Checked_ Approved 3- 1805 --` -`280 20 -D21 i SHE .- • c • sa.aU ••- • .. . , , . • 791:7714"*M1',.. • '0',1 -1r . -• --1.e1",f4 gcviA.k.,,,, • ,T4 2g, n) • 410-, r 0 \ AN AL: Al JAMES CHRISTENSEN ROAD STORM DRAIN MODIFICATION TUKWILA, WASHINGTON wg:H WILSEY & HAM. INC. • i':NC•I'CLI:RIM.: • PI.ANI's:(; • sekvEyING . . • , • FNVIRO\ NIFNTAI. ANAIYSIS • • . • Central Park Building 1980 II2th Avenue N.E. ' Telephone Bellevue, Washington 98009 (206) 959-3250.