HomeMy WebLinkAboutD_Gene Coulon Park Water Walk_ SSDP_FINALDEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
D_Gene Coulon Park Water Walk_ SSDP_FINAL
PLANNING DIVISION
CERTIFICATE OF EXEMPTION
FROM SHORELINE SUBSTANTIAL DEVELOPMENT
EVALUATION FORM & DECISION
DATE OF DECISION: November 30, 2021
PROJECT NUMBER: LUA21-000414, SME
PROJECT NAME: Gene Coulon Memorial Beach Park North Water Walk
PROJECT MANAGER: Jill Ding, Senior Planner
APPLICANT: Jason Stutes, GeoEngineers
17425 NE Union Hill Rd #250, Redmond, WA 98052
OWNER/CONTACT: Betsy Severtson, Renton Parks Planning and Natural Resources
1055 S Grady Way, Renton, WA 98057
PROJECT LOCATION: 1201 Lake Washington Blvd N (Parcel No. 3344500775)
PROJECT DESCRIPTION: The applicant is requesting a Shoreline and SEPA Exemption for the maintenance and
repair of the existing water walk at Gene Coulon Memorial Park. The proposal would increase light penetration and
replace treated timber components on the Gene Coulon Memorial Beach Park North Water Walk (Water Walk)
along with other maintenance activities. This would be accomplished though removing the existing concrete deck
and replacing it with light-penetrating grated decking supported on new steel girders. In addition, the existing picnic
floats would be replaced with new aluminum framing, recycled plastic timber (RPL), and light-penetrating decking.
The grated gangways and timber step runs would also be replaced with light-penetrating decking. All treated timber
components, including step risers, fascia boards and bull-rails would be replaced with RPL. In total, approximately
8,172 square feet fiberglass light-penetrating grating with supporting steel beams would be installed. Pile wrapping
to prevent pile corrosion is also proposed along with minor repairs to existing pile caps and painting of the Pilot
House. The proposed project would result in no net loss of ecological functions and would not require mitigation
under the City’s Shoreline Master Program Regulations. However, in order to comply with the restoration and
permitting (RAP) requirements (under the Endangered Species Act (ESA) Section 7) mitigation plantings would be
required, the minimum number of plantings would be installed which includes three (3) red osier dogwoods and
two (2) Western redcedars (Thuja plicata). These plantings would be monitored annually for five (5) years to ensure
their survival. The project site is located within Lake Washington Reach D and the Shoreline High Intensity
Designation.
SEC-TWN-R: SW 05-23-05
DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
City of Renton Department of Community & Economic Development Certificate of Exemption From Shoreline Substantial Development
Gene Coulon Memorial Beach Park North Water Walk LUA21-000414, SME
Permit Date: November 30, 2021 Page 2 of 3
D_Gene Coulon Park Water Walk_ SSDP_FINAL
LEGAL DESCRIPTION:
(King County Assessor)
HILLMANS LK WN GARDEN OF EDEN #5 BLKS 360 & 361 SD ADD TGW SH LDS ADJ TGW
POR GL 4 SEC 05-23-05 & SH LDS ADJ DAF - BAAP N 56-32-07 W 65.018 FT FR NXN OF
GOV MDR LN & S LN SD SEC 5 TH N 56-32-07 W 1221.78 FT TO INNER HARBOR LN TH
S 45-45-00 W 317.92 FT TH S 44-16-00 E 680 FT M/L TO S LN OF SD SEC 5 TH E ALG SD
S LN OF SD SEC 765.5 FT M/L TO WLY BNDRY OF BN 100 FT R/W TH NELY ALG SD WLY
BNDRY TO POINT OF BEGINNING TGW AREA IN FRONT OF LOTS 1 THRU 9 BLOCK 360
OF HILLMANS LK WN GARDEN OF EDEN #5
WATER BODY/REACH: Lake Washington, Reach D
EXEMPTION JUSTIFICATION/DECISION: An exemption from a Shoreline Management Substantial Development
Permit is hereby Approved on the proposed project in accordance with RMC.4.9190C “Exemption from Permit
System’ for the following reasons:
WAC 173-27-040(2)(b): Normal maintenance or repair of existing structures or developments, including damage by
accident, fire or elements. "Normal maintenance" includes those usual acts to prevent a decline, lapse, or cessation
from a lawfully established condition. "Normal repair" means to restore a development to a state comparable to its
original condition, including but not limited to its size, shape, configuration, location and external appearance,
within a reasonable period after decay or partial destruction, except where repair causes substantial adverse effects
to shoreline resource or environment. Replacement of a structure or development may be authorized as repair
where such replacement is the common method of repair for the type of structure or development and the
replacement structure or development is comparable to the original structure or development including but not
limited to its size, shape, configuration, location and external appearance and the replacement does not cause
substantial adverse effects to shoreline resources or environment.
RMC 4-9-190C.1.c.ii and iii: Maintenance and Repair: Normal maintenance or repair of existing structures or
developments, including damage by accident, fire or elements.
ii. “Normal repair” means to restore a development to a state comparable to its original condition, including but
not limited to its size, shape, configuration, location and external appearance, within a reasonable period after
decay or partial destruction, except where repair causes substantial adverse effects to the shoreline resource or
environment.
iii. Replacement of a structure or development may be authorized as repair where such replacement is the common
method of repair for the type of structure or development and the replacement structure or development is
comparable to the original structure or development including, but not limited to, its size, shape, configuration,
location and external appearance and the replacement does not cause substantial adverse effects to shoreline
resources or environment.
DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
City of Renton Department of Community & Economic Development Certificate of Exemption From Shoreline Substantial Development
Gene Coulon Memorial Beach Park North Water Walk LUA21-000414, SME
Permit Date: November 30, 2021 Page 3 of 3
D_Gene Coulon Park Water Walk_ SSDP_FINAL
FINDINGS: The proposed development is:
i. Consistent with the policies of the Shoreline Management Act.
ii. Consistent with the City of Renton Shoreline Master Program.
iii. Categorically exempt from a State Environmental Policy Act (SEPA) threshold
determination pursuant to WAC 197-11-800(3).
SIGNATURE & DATE OF DECISION:
_____________________________________ ______________________________
Vanessa Dolbee, Planning Director Date
RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by
the approval body. The approval body may modify his decision if material evidence not readily discoverable prior
to the original decision is found or if he finds there was misrepresentation of fact. After review of the
reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be
no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within
the 14-day appeal time frame.
APPEALS: This administrative land use decision will become final if not appealed in writing to the Hearing
Examiner on or before 5:00 PM on December 14, 2021. An appeal of the decision must be filed within the 14-day
appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Due to the ongoing state of emergency enacted by
Governor’s Proclamation 20-05, the City Clerk’s Office is working remotely. For that reason, appeals must be
submitted electronically to the City Clerk at cityclerk@rentonwa.gov or delivered to City Hall 1st floor Lobby Hub
only on Tuesdays and/or Wednesdays. The appeal fee, normally due at the time an appeal is submitted, will be
collected at a future date if your appeal is submitted electronically. Appeals to the Hearing Examiner are governed
by RMC 4-8-110 and additional information regarding the appeal process may be obtained from the City Clerk’s
Office, cityclerk@rentonwa.gov.
EXPIRATION: Two (2) years from the date of decision (date signed).
ATTACHMENTS: Plan Set, Lake Study
cc: Applicant
DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
11/30/2021 | 2:58 PM PST
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\0,.1,DATUM:0.0’M.L.L.W.ADJACENTPROPERTYOWNERS:—BNSF—SECODEVELOPMENT,INC.—HEILYJOHNPATRICK&SUNDAYC.—BUILDINGCATSOUTHPORTLLGENECOULONPARKMAINTENANCEEXISTINGCONDITIONSIRRIGATIONCITYOFRENTON1201LAKEWASHINCTONBLVD.N.RENTON,WA98056PROPOSED:MAINTENANCEON3PARKSTRUCTURES.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCO.SEC.5,TWP.23N,RG.5EAPPLICATIONBY:CITYOFRENTONSHEET13of16DATE:OCT.2021ORDINARYHIGHWATER—EXISTINGTREETOREMAIN,TYPICALEXISTINGTIMBER—.LANDSCAPEBARRIERTOREMAIN,TYPICALEXIS11NGVIEWINGDECK10REMAINEXISTINGNORTHWATERWALKEXIS11NGIRRIGA11ONMAINLINE,TYPICAL.—EXIS11NGIRRIGA11ONLATERALLINE,TYPICAL—EXIS11NGIRRIGA]10NSPRAYHEAD,TYPICALEXIS11NGSLEEVE,TYPICAL—EXISTiNGIRRIGATiONWATERMETERNORTHASSEMBLYPURPOSE:PARKMAINTENANCESCALE\DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
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NOTES:EXCAVATEPLANTiNGPITTOA2—0”DEPTH&6’—O”RADIUSAROUNDEACHPLANTANDLEGALLYDISPOSEOFEXCAVATEDMATERIALOFF—SITE.2.ALLSOIL,ANDJAPANESEKNOTWEEOCORMS,ROOTS,STEMS,SEEDS,ANDFOUAGESHALLBECOMPLETELYREMOVEDFROMEXCAVATEDAREAANDDISPOSEDOFOFF—SITE.3.ANYEXISTINGDOGWOODSHRUBROOTSIMPACTEDBYPLANTiNGSHALLBERE—CUTWThACLEANANDSHARPPRUNINGBLADEPRIORTOCOVERING.TREETRUNKPLANTiNGHOLERADIUS2”X4”GALVANIZEDFENCING,MIN3’—ONTW/MIN6”EMBEDMENTSTEELLANDSCAPESTAKEWItHSTAKE-SAFECAPcTYPICALTREEINSTALLATIONNOTTOSCALENOTES:EXCAVATEPLANTINGPITTOA2—0”DEPTH&6’—O”RADIUSAROUNDEACHPLANTANDLEGALLYDISPOSEOFEXCAVATEDMATERIALOFF—SITE.2.ALLSOIL,ANDJAPANESEKNOTWEEDCORMS,ROOTS,STEMS,SEEDS,ANDFOUACESHALLBECOMPLETELYREMOVEDFROMEXCAVATEDAREAANDDISPOSEDOFOFF—SITE.3.ANYEXISTiNGDOGWOODSHRUBROOTSIMPACTEDBYPLANTINGSHALLBERE—CUTWITHACLEANANDSHARPPRUNINGBLADEPRIORTOCOVERING.®TYPICALSHRUBINSTALLATIONNOTTOSCALE)“—1”WIDEWEBBEDFABRICTAPE(ARBoRTIEORAPPROVEDEQUAL).SECURETOTREESTAKEWITH#2PENNYCOMMONNAJL(ONEPERSTAKE),ALLOWFORENOUGHSLACKINARBORTIETOACCOMMODATE12”LATERALTRUNKMOVEMENTATHEIGI-ITOFATTACHMENT•TREESTAKE•ROOTOALLLOOPDIASHALLBE6”—8’GREATERTHANTREETRUNKDIASECURELOOPWiThOVERHANDSUPKNDT.PULLEDAGAINStASECONDOVERHANDKNOT,TIEDPLANONTHEWEBBEDFABRICTAPE(2)2DIAWOODDOWELEDTREESTAKESWItHCHAMFEREDTOP&6CONICALPOINTBOTtOM,KEEPCLROFROOTBALL4DIA.SPLITCORRUGATEDDRAINPIPE,ZIPTiEDCLOSED;INSTALLFROMFiNISHGRADETO6BELOWBOTTOMBRANCHWEBBEDFABRICTAPETOPOFROOTCROWNTOBE1”HIGHERTHANFiNISHGRADE4”HOGFUELMULCHDEPTH,TAPERDEPTHATTRUNKTOAVOIDCONTACT,INSTALLMULCHTOLIMITSEXCAVATION,SEEPLANTINGNOTE11DEPTHFiNECOMPOSTTOLIMITSOFPLANTINGHOLEINSTALL4NTX4WIDTHWATERRINGATO}JTSIDEEDGEOFPLANTINGHOLEFiNISHGRADEPRIORTOPLACINGMULCHWITHPLANTINGSOILANDAMENDMENTS,WHENHOLEISHALFFiLLEDTHOROUGHLYWATERSEttLE,THENADDREMAININGSOILANDWATERSETTLEASECONDTIME1:1SLOPEONSIDESOFPLANTINGHOLE,SCARIFYSIDESOFPLANTINGHOLE-TOPOFROOTCROWNTOBEFLUSHWITHFiNISHGRADEl”DEPTHFiNECOMPOSTTOLIMITSOFPLANTINGHOLE-FINISHGRADEPRIORTOPLACINGMULCHliGHTLYSCARIFYROOTBALLTOLOOSENROOTSPRIORTOPLANTING-BACKFILLWITHPLANTINGSOIL.THOROUGHLYWATERSETTLE-MOUND&COMPACTDCSOILUNDERROOTBALLTO85%MINDRYDENSITYTOPREVENTSETTLING1:1SLOPEONSIDESOFPLANTINGHOLEFENCINGSHALLBEMIN12”FROMEDGEOFTREEFOLIAGEBEAVERPROTECTION-FENCING,FASTENTOSTEELLANDSCAPESTAKESWIGALVANIZEDWIREMINEVERY6”,STARTINGATBOTTOMIHCOMPACTEDTO85%MAXDRYTHANDIAOFREMOVESTRINGS,TWINE,AND/DRWIREBASKETSFROMROOTBALL;UNDISTURBEDDCSOILORSOIL__-,12GREATERL\\AFTERPLACINGWEEINPLANTINGPIT,curANDCOMPLETELYDENSITY.VERIFYPOSITIVEDRAINAGEROOTUALLCOMPLETELYREMOVEFABRICCROWBAGS;CUTBURLAPFROMTOPPRIORTOCONSTRUCTION1/3OFROOTBALLANDREMOVECUTBURLAPFROMPLANTINGPITSECTIONMOUND&COMPACTEXSOILUNDERROOTBALLTO85GMINDRYDENSITYTOPREVENTSEttLING4”HOGFUELMULCHDEPTH,KEEPMULCHLAYERAWAYFROMFOLIAGE,INSTALLMULCHTOLIMITSOFEXCAVATION,SEEPLANTINGNOTE1INSTALL4”NTX4”WIDTH•WATERRINGATOUTSIDEEDGEOFPLANTINGHOLEUNDISTURBEDEXSOILORDCSOILCOMPACTEDTO85%MAXDRYDENSITY;VERIFYPOSITIVEDRAINAGEPRIORTOCONSTRUCTIONSECTIONPURPOSE:GENECOULONPARKPROPOSED:PARKMAINTENANCEMAINTENANCEON3MAINTENANCEPARKSTRUCTURES.DATUM:0.0’M.L.L.W.IN:LAKEWASHINGTONADJACENTPROPERTYOWNERS:PROPOSEDCONDITIONAT:RENTON,WA.,KINGCO.—BNSFPLANTINGSECTIONSSEC.5,TWP.23N,RG.5E—SECODEVELOPMENT,INC.APPLICATIONBY:—HEILYJOHNPATRICK&CITYOFRENTONCITYOFRENTONSUNDAYC.1201LAKEWASHINGTONBLVD.N.—BUILDINGCATSOUTHPORTLLRENTON,WA98056SHEET15of16DATE:OCT.2021DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
PURPOSE:PARKMAINTENANCEDATUM:0.0’M.L.L.W.ADJACENTPROPERTYOWNERS:—BNSF—SECODEVELOPMENT,INC.—HEILYJOHNPATRICK&SUNDAYG.—BUILDINGCATSOUTHPORTLLPROPOSEDCONDITIONIRRIGATIONCITYOFRENTONLAKEWASHINGTONBLVD.N.RENTON,WA98056TYPICALPROPOSED:MAINTENANCEON3PARKSTRUCTURES.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCO.SEC.5,TWP.23N,RG.5EAPPLICATIONBY:CITYOFRENTON0NORTHSHEET16of16DATE:OCT.2021ORDINARYHIGHWATEREXIS11NGIRRIGATIONMAINLINE,TYPICALEXIS11NGTREETOREMAIN,TYPICALEXISJJNGIRRIGA]10NLATERALLINE,TYPICALEXIS11NGIRRICA11ONSPRAYHEAD,TYPICALEXISTINGTIMBERLANDSCAPEBARRIERTOREMAIN,TYPICALEXISTINGSLEEVE,TIE—INTOEXISTINGIRRIGATIONSYSTEMFORMITIGATIONAREAIRRIGATIONDURINGPLANTESTABLISHMENTAPPROXIMATELIMITSOFMITIGATIONAREAIRRIGATIONEXISTINGVIEWINGDECKTOREMAINEXISTINGNORTHWATERWALKEXISTINGIRRIGATIONWATERMETERGENECOULONPARKMAINTENANCESCALE1201DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
GEOENGINEERMemorandum21014thAvenue,Suite950,Seattle,WashingtonSuite950,Telephone:206.728.2674,Fax:206.728.2732www.geoengineers.comTo:BetsySevertsen,ParksPlanningandNaturalResources,CityofRentoncc:CohnKuester,PE,P1NIDEngineersFrom:(VmilyR.Hum,JasonP.StutesPhD,andJoseph0.Callaghan,GeoEngineers,Inc.Date:October26,2021V5’File:0693-086-00Subject:GeneCoulonMemorialBeachParkNorthWaterWalkImprovements-LakeStudyINTRODUCTIONANDPROJECTPURPOSETheGeneCoulonMemorialBeachParkNorthWaterWalkImprovementsProjectislocatedwithinthesoutheasternshorelineofLakeWashingtonalongLakeWashingtonBoulevardinRenton,Washington.LakeWashingtonisconsideredashorelineofstatewidesignificanceperRentonMunicipalCode(RMC)4-3-090.ThepurposeoftheprojectistoincreaselightpenetrationandreplacetreatedtimbercomponentsattheGeneCoulonMemorialBeachParkNorthWaterWalk(WaterWalk)alongwithothermaintenanceactivities.Thiswillbeaccomplishedbyremovingtheexistingconcretedeckandreplacingwithlight-penetratinggrateddeckingsupportedonnewsteelgirders.Inaddition,theexistingpicnicfloatswillbereplacedwithnewaluminumframing,plastictimberandlightpenetratingdecking.Thegratedgangwaysandtimbersteprunswillalsobereplacedwithlightpenetrationdecking.Alltreatedtimbercomponents,includingsteprisers,fasciaboardsandbull-railswillbereplacedwithrecycledplasticlumber(RPL).Intotal,approximately8,172squarefeetoffiberglasslightpenetratinggratingwithsupportingsteelbeamswillbeinstalled.PilewrappingtopreventpilecorrosionisalsoproposedalongwithminorrepairstoexistingpilecapsandpaintingofthePilotHouse.PROJECTOVERVIEWTheprojectconsistsofmultipleimprovementstotheWaterWalk.ImprovementstotheWaterWalkincludethereplacementoftheexistingconcretedeckwithnewgalvanizedsteelframing,60percentlightpenetratingfiberglassgrateddeckingandconcretepanelstomatchthenewdeckaroundtheadjacentIvar’sRestaurant.Thenewconcretepanelswillbeprecastandthinnerthanthepreviousconcretedecking.Thinnerdeckingandconcretewillresultinthebottomelevationofthegratingtobeabout19inchesaboveordinaryhighwater(OHW),13incheshigherthanthebottomoftheexistingconcretedeck.Theshadingcausedbytheexistingstructurewillbesubstantiallyreducedandmorediffusecomparedtopre-projectconditions.Inaddition,theexistingtimberpicnicfloatswillbereplacedwithnewgalvanizedsteelframing,RPLandgrateddecking.Thesteprunsandthegangwayswillalsobereplacedwiththe60percentlightpenetratingfiberglassgrateddecking.Theexistingaluminumgratedgangwaysareonlyapproximately20percentlightpenetrating.Alltreatedtimbercomponents,includingfasciaboards,steprisers,walersandbull-rails,willbereplacedwithplastictimber.Intotal,approximately8,172squarefeetofconcretepanels,timberpicnicfloatsandgangwayswillbereplacedwithfiberglasslightpenetratinggrating.TheWaterWalkdeckingwillbesupportedbysteelbeams.RemovingpressuretreatedtimbercomponentsandincreasinglightpenetrationtothelakewillprovideanetenhancementtoshorelinehabitatandenvironmentalconditionswithinLakeWashington.RECEIVED11/17/2021 JDingPLANNING DIVISIONDocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
MemorandumtoCityofRentonOctober26,2021Page2ThedimensionsoftheWaterWalkandpicnicfloatswillnotchange;however,thenewgrateddeckingwillnowbeapproximately60percentlightpenetrating.Currentconcretedeckingissolidandpreventsanylighttransmission.Theprojectwillresultinanetfunctionaldecreaseofover-waterstructureshadingandisthereforeconsideredtobeself-mitigating.Inadditiontotheabove,pilewrappingtopreventpilecorrosionisalsoproposedandistheonlyprojectcomponentthatisconsideredin-waterwork.Thispilewrappingsystemwillincludeaninnermoisturebarrieraswellasanouterjacketthatwillcoverthepilingfromjustbelowthemudlinetoabovethehigh-waterline.Theonlyfillassociatedwiththisproposedprojectistheinstallationofpilewrapsarounddegradedpiles.Thefillincludesthethicknessofthesleeveandthematerialusedtofilltheinterstitialspacebetweenthepileandtheinnersurfaceofthesleeve(approximately3.3cubicyardstotal).Minorrepairstoexistingpilecapsandpaintingofthepilothousewilloccurabovetheordinaryhighwatermark(OHWM).Thetotalestimatedprojectcostis$5to$6milliondollars.Nouplanddisturbanceisincludedaspartofthisproject,includingnotreeremovalorgradingproposed.ThesiteiswithintheShorelineManagementActjurisdictionwiththelocalshorelineenvironmentdesignationofhighintensity.ThesiteiszonedasR-1Residential.IMPACTASSESSMENTThepurposeofthissectionistoprovideanoverviewoftheprojectdetailsaddressingtheCriticalAreascode(RMC4.3.050)andsubmittalrequirementsforlakestudyassessmentnarrativeperdefinitioninRMC4-8-120(D)(19).Thisprojectqualifiestobeprocessedthroughthe“RestorationandPermitting(RAP)”programforexpeditedEndangeredSpeciesAct(ESA)Section7compliance.Asasupplementtothismemo,theRAPformandassociateddocumentsandaBiologicalAssessment(GeoEngineers2020)weredevelopedforthisprojectandprovidethoroughanalysisoftheprojectactivitiesandpotentialimpactstolistedspeciesandhabitat.ThesiteisadjacenttoLakeWashington,whichisinventoriedasaTypeSwaterbodyor“ShorelineoftheState”.TheCityofRenton’sCORMapsthesiteaswithinshorelinejurisdictionandthereforeCityofRenton’sShorelineMasterProgramRegulationsalsoapplytodevelopmentatthissite.Allexistingdrainagepatternsatthesitewillbeunchangedasnouplandworkisproposed.DrainagewithintheuplandportionoftheparkisdirectedtothelakeincludingthroughthegrateddeckingassociatedwiththeWaterWalk.VegetationTheadjacentterrestrialportionsofGeneCoulonMemorialBeachParkarecharacterizedbygrassymowedlawns,pavedparkinglots,andsmallisolatedareasofshrubsandmaturetrees.Anapproximately3-to5-foot-widestripofriparianvegetationalongshorelineischaracterizedbyredosferdogwood(Cornussericea),reedcanarygrass(Phalarisarundinacea)andyellowflagiris(Irispseudacorus).Portionsoftheshorelinearearmoredwithriprapanda2.5-foot-tallwoodenretainingwall.AllprojectactivitieswilloccurwithintheexistingWaterWalkandthereforewillhavenoimpacttouplandareasorvegetation.AllworkislimitedtotheexistingWaterWalkstructureandthereforehasnoimpacttovegetativecoveratthepark.NomeasurestoprotecttreesandvegetationarenecessaryasallworkwillbeperformedviabargeorfromtheexistingWaterWalk.DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
MemorandumtoCityofRentonOctober26,2021Page3EcologicalFunctionsLakeWashingtoncontainsESA-listedpopulationsofChinookSalmon(Oncorhynchustshawytscha),Steelhead(Oncorhynchusmykiss)andBullTrout(Salvelinusconfluentus),aswellasnon-ESA-listedpopulationsofCohoSalmon(Oncorhynchuskisutch),SockeyeSalmon(Oncorhynchusnerka),Kokanee(Oncorhynchusnerka),RainbowTrout(Oncorhynchusmykiss),andCoastalCutthroatTrout(Oncorhynchusclarkil),aswellasothernon-salmonidnativeandintroducedfishspecies.Bothadultandjuvenileindividualsofeachofthesespecieshavebeenobservedwithinthelake.TheLakeWashingtonshorelineintheprojectareadoesnotcontainappropriatehabitatforBullTrout(alsoESA-listed)spawningorrearing.However,BullTroutlikelymigratethroughLakeWashingtontoandfromtheCedarRivetandadultBullTroutmigrateintoLakeWashingtontoforageduringthewinterandearlyspring.TheLakeWashingtonshorelinealsoprovideshabitatforbirdnesting,breedingandfeeding/foragingareas.PotentialimpactstoecologicalfunctionswithinLakeWashingtonfromthisprojectarelimitedtohabitatalterationandwaterquality.Theseimpactsaredescribedbelow:•HabitatAlteration:Majorhabitatalterationassociatedwiththeprojectconsistsolelyofhabitatimprovements.Replacingconcretedeckingwithgratedmaterialswilldirectlyresultinsignificantlylessshadingoflimneticandlittoralenvironments.Theremovalandreplacementofpressure-treatedtimbercomponentsontheWaterWalkwilldecreasepotentialleachingofcontaminantsandprovideindirectbenefitstoESA-listedspeciesthroughimprovementsinfoodquality/quantity.•WaterQuality:Thisprojectmayhaveshort-termtemporaryimpactstoESA-listedfishspeciesfromwaterqualityimpactsduringconstructionrelatedtotheinstallationofthepilewrapsystem.Theremaybeatemporaryincreaseinturbidityastheoutersleeveispushedbelowthemudlineoftheexistingpilebase.However,thelevelofdisturbancewillbelimitedtoasinglepileatatimeandthevolumesofsedimentbeingdisturbedareminimal.Anyminorelevationstoturbiditywillbetemporary,limitedinareaaffectedanddissipateshortlyafterdisturbance.NONETLOSSPerRMC4-3-090,ShorelineMasterProgramRegulations,thisprojectmustmeetthecriteriaofnonetlossofecologicalfunctionsasdescribedinRMC4-3-090D2.Throughcarefulprojectdesign,theprojectminimized,tothegreatestextentpracticable,directimpactstoaquaticareas(belowOHWM)andprovidesnonetlossoflakefunctionbecauseofdeckreplacementmaterialsrevisions,implementingminimizationmeasuresinadditiontofuturerestorationintheLakeWashingtonwatershedthatwillbesupportedthroughthemitigationfee.Theprojectwillresultindecreaseofoverwatershadingbyutilizinggrateddeckingtoreplaceexistingconcretepanelsaswellaspotentialimprovementtowaterqualitythroughremovaloftimberdockcomponents,andreplacementwithcompositedeckingmaterial.Althoughthetotalsizeofthereplacementdocksandpicnicfloatsisthesameastheexistingdocks,theamountofoverwatershadingwillbereducedbyutilizinggrateddecking.EndangeredSpeciesMitigationAlthoughthisprojectisself-mitigatingaccordingtoCityofRentoncode(RMC4-3-090),thisprojectisbeingmadetomitigateforextensionoflifecomponentsforthestructureundertheESA.Therefore,sincethisprojectDocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
MemorandumtoCityofRentonOctober26,2021Page4islocatedonLakeWashingtonitqualifiestobereviewedandpermittedthroughtheRAPprogramforexpeditedESASection7compliance.TosatisfytheRAPrequirements,theminimumnumberofplantingsarebeinginstalledwhichincludethreeredosierdogwoodsandtwoWesternredcedars(Thujaplicata).Theseplantingswillbemonitoredannuallyfor5yearstoensuretheirsurvival.SeeGeoEngineers2021formoredetailsonplanting,monitoringandreportingschedule.Inadditiontotheplantings,theCityofRentonwillbepayingaconservationfeetooffsetthedebitsgeneratedaspartoftheendangeredspeciesconsultation.TheconservationfeewillgotowardsKingCounty’sIn-LieuFee(ILF)MitigationProgramwhichisinturnusedtorestore,establish,enhanceand/orpreservewetland,river,streamandbufferwithintheLakeWashingtonwatershed(KingCounty2021).MeasurestoProtectSpeciesandHabitatConservationmeasuresandBestManagementPractices(BMPs)willbeutilizedduringprojectconstructiontoavoidtemporaryimpactstofishandaquatichabitat.Conservationmeasureswillfocusonminimizingerosionandsedimentationandthepossibilityofspills.Specialmeasureswillbetakentoensurethatallwastematerialswillbedisposedofoff-siteandinaccordancewithapplicableregulations,adequatematerialsandprocedureswillbereadilyavailableonthesitetorespondtounanticipatedweatherconditionsoraccidentalreleasesofmaterials,andaprotocolforcontactingWashingtonDepartmentofFishandWildlife(WDF\N)willbereadilyavailableintheeventthatactivitiesareobservedtoresultinfishkills,fishindistressorotherwaterqualityproblems.Inaddition,in-waterworkwillberestrictedtotheconstructionwindowforin-waterworkinLakeWashingtonwithin1-mileoftheCedarRiverwhichisJuly16toJuly31andNovember16toDecember31(KingCounty2019)toprotectfish.SUMMARYTheCityofRentonParksPlanning&NaturalResourcesDepartmentproposesimprovementsatCoulonParkWaterWalktoincreaselightpenetrationandreplacetreatedtimbercomponentsalongwithothermaintenanceactivities.Theproposedprojecthasnoimpactstoexistingvegetationandthemajorityofimprovementsaretotheoverwaterstructurewithin-waterworklimitedtothepilewraps.AspartoftheRAPpermittingprocess,theCityofRentonwillbeinstallingtwotreesandthreeshrubsalongtheshoreline.Inaddition,theCityofRentonwillbepayingaconservationfeethatwillfundrestorationprojectswithintheLakeWashingtonwatershedthroughKingCounty’sILFMitigationProgram.Thisprojectwillresultinoverallimprovementtonearshoreresourcesandoverallecologyoftheshorelineinadditiontoimprovingpublicaccessandenjoymentoftheshoreline.REFERENCESGeoEngineers,Inc.fGeoEngineers).2021.CoulonBeachParkNorthWaterWalkImprovementProject—RestorationandPlantingMemo.PreparedforPNDEngineers,InconbehalfofCityofRenton.DRAFT,deliverabledatetobedetermined.GElFileNo.0693-086-00.GeoEngineers,Inc.(GeoEngineers).2020.BiologicalEvaluationandEssentialFishHabitatEvaluation.GeneCoulonMemorialBeachParkNorthWaterWalkImprovementsProject,Renton,Washington.PreparedforPNDEngineers,InconbehalfofCityofRenton.December15,2020.GElFileNo.0693-086-00.DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC
MemorandumtoCityofRentonOctober26,2021Page5KingCounty.2019.ImplementationGuideforRestorationandPermitting(RAP)ForLakeWashingtonandLakeSammamishInstructionsforApplicants.July25,2019.KingCounty.2021.MitigationReservesProgram—Introduction.Availableat:httos://kincounty.gov/services/environment/water-and-land/wetlands/mitiation-creditprogram.aspx(accessed10/13/21)DisclaimerAnyelectronicform,facsimileorhardcopyoftheoriginaldocument(email,text,table,and/orfigure),itprovided,andanyattachmentsareonlyacopyoftheoriginaldocument.TheoriginaldocumentisstoredbyGeoEngineers,Inc.andwillserveastheofficialdocumentofrecord.DocuSign Envelope ID: D848C404-54C1-4D57-8061-465F2BBFEBCC