Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Shoreline Exemption_Bird Island Shoreline Enhancement Project_15-000866
DEPARTMENTOFCOMMUNITYANDECONOMICDEVELOPMENTfltflcPLANNINGDIVISIONCERTIFICATEOFEXEMPTiONFROMSHORELINESUBSTANTIALDEVELOPMENTDATE:February4,2016PROJECTNUMBER:LUA15-000866,SMEPROJECTNAME:BirdIslandShorelineEnhancementProjectPROJECTMANAGER:JillDing,SeniorPlannerPROPERTYOWNER:WashingtonStateDepartmentofNaturalResources,950FarmanAvenueNorth,Enumclaw,WA98022APPLICANT:WashingtonStateDepartmentofNaturalResources,950FarmanAvenueNorth,Enumclaw,WA98022CONTACT:MonicaShoemaker,WashingtonStateDepartmentofNaturalResources,950FarmanAvenueNorth,Enumclaw,WA98022PROJECTLOCATION:1201LakeWashingtonBlvdNPROJECTDESCRIPTION:TheWashingtonStateDepartmentofNaturalResources(DNR)inpartnershipwiththeCityofRentonParksDepartmentisproposingtoenhanceapproximately525feetofshorelinehabitatandapproximately0.4acresofuplandhabitatwiththegoaltoimprovethemigratoryandrearinghabitatforjuvenileChinooksalmonandpublicaccessforparkusers.Thescopeofworkincludesremovalofdebristhatislitteredaroundtheshoreline,removalofinvasiveplants,nativeplanting,placementofsedimentforshallowwaterhabitat,placementoflargewood,andtrailimprovements.WhilethisapplicationistiedinthepermitsystemtotheCoulonParkparcel,theprojectsiteitselfisactuallylocatedjustoutsideoftheCitylimitsonDNRlandanddoesnothaveaparcelnumberofitsown.BirdIslandisinLakeWashington(reachG),whichisaregulatedshorelineundertheShorelineMasterProgram(SMP)andiswithintheShorelineHighIntensityDesignation,thein-waterworkwouldoccurbelowtheOrdinaryHighWaterMark(OHWM),withintheAquaticShorelineDistrict.CoulonParkislocatedwithintheResidential—1(R-1)zoningdesignation.DNRtookLeadAgencystatusfortheStateEnvironmentalPolicyAct(SEPA)reviewandissuedaDeterminationofNon-Significancefortheworkproposed.TheSEPAcommentperiodfortheproposalendedonJanuary15,2016. BirdIslandShorelineRestorationProjectPage2of7February4,2016Theprojectproposestoremovethemetalandconcretedebristhatisinthewateralongtheisland’sshoreline,butnotbeneaththemudline.FishmixmaterialwillbeimportedtocreateshallowwaterhabitatwithappropriatesizedmaterialsforthemigratingjuvenileChinook.Thedesignalsoincludesplacementoftwoengineeredlogjamsonthenorthernsideoftheislandtoincreasedhabitatcomplexity,controlsedimentdrift,andhelppreventfutureerosion.Atenfootminimumzoneofnativemixedwetlandandriparianspecieswillbeplantedbetweentheedgeofthenewshorelineandtheedgeofthetimberpathway.Beyondthiszone,areascurrentlydenudedoroccupiedbyinvasivespecieswillbeclearedandrevegetatedwithnativespecies.Plantingswillbeintegratedintothebankinordertomaximizeoverhangingandriparianvegetation.Largertreeswillbeplantedfurtheruplandinordertoprovidefurthershadingoftheshoreline.Plantingwouldalsoimprovestructuralandspeciesdiversityandincludenativeemergent,shrub,andtreespecies.Atemporaryirrigationlinewillberequiredtosustaintheplantings.AconnectiontotheGeneCoulonMemorialBeachParkirrigationsystemandasmallplasticpipewillbeattachedundertheexistingbridge.Irrigationpipeswillbeinstalledongradethroughoutthenewplantings.DNRwillmonitorthesuccessofthenewvegetationandreplaceunsuccessfulplantingsforfiveyearsfollowingtheinitialplanting.Theprojectproposestoextendtheboardwalkintoalooptodiscourageoff-pathtravelandkeepvisitorsmoving.Thescopeofworkwillincludetheinstallationofshallowtimberfoundations,stringers,anddecking.Thisdesignmaximizesthescenicpotentialofthelocationbyprovidingnewboardwalkaccesstothehighestpointontheisland,viaatimberpathtravelingalongthenorthwestshorelineoftheisland.AllnewandexistingboardwalkwillhaveguardrailsonbothsidesandwillbeADAaccessible.Thisconceptprovidesawiderbufferofoverhangingvegetationalongtheshorelineandallowsfortreestobeplantedinthecenterofthesitetoprovideshadingoftheshorelineandtheboardwalk.Thenewboardwalkwillprovidetwobenchesandthreeeducationalsignsthatwilltellthestoryofmigratingsalmonandeducatevisitorsabouttheimportanceofthehabitatandtherestorationeffortsthathavebeencompletedonthesouthendofthelake.Theprojectalsoproposestoremoveasectionoftheboardwalkthatwouldnotbeapartofthenewloopconcept.Onewetland,WetlandA,wasdelineatedwithintheprojectlocation.Thewetlandis9,750squarefeet(0.22acres).WetlandAconsistsofshrubandemergentcommunitiesthatarelocatedalongtheshorelineofLakeWashingtonandwithinaswalethatbisectstheisland.ThewetlandratingforthiswetlandisCategoryII.TheCityofRenton’srecommendedbufferrangeforthiswetlandis150feet.BirdIslandencompassestheentire150-footwetlandbufferarea.Theuplandbufferareascurrentlyconsistofaboardwalk,mowedlawns,shrubhabitat,ormixedconiferousanddeciduoustrees.Thefollowingarealistoftheactionsthataredescribedabove:.Enhanceshallowwaterhabitatbyplacingapproximately2,700cubicyards(cy)ofsubstrateenhancement(fishmix,consistingofcleansandandfinegravel,(1,950cybelowOHWL,750cyaboveOHWL)),alongtheshorelinetoincreaseandenhancejuvenileChinookhabitat.Page2of7 BirdIslandShorelineRestorationProjectPage30f7February4,2016.Constructtwoengineeredlogjams(EUs).Place12anchoredlogs..RemoveapproximatelY321cyofdebrisfromshoreline(weightof250tonsofsoil,sand/gravel,andboulder-sizedparticles,525tonsofsteel/concrete,representinga60-to-40%mixofdirtandsteel/concrete,respectively)ofdebrisfromshoreline..Removingnonnativeorinvasiveplantstotheextentpossible..Plantnative,emergent,and/orriparianvegetationalongtheshorelineanduplandtocontrolpublicaccessandenhancehabitatforotherspecies..Protectexistingnativevegetation..Enhance24,270squarefeetofshorelineandaquatichabitat,8,777squarefeetofexistingwetlandsand3,216squarefeetofwetlandbuffer..Improveexistingpublicaccesstrailwithnewrailingsandincreasetheboardwalktrailsystemby200linealfeetwithanewandimprovedloop,toreplacetheexistingatgradetrail..Cutfill,setfoundations,stringers,deck,andrailcomprising200feet(1,200squarefeet)ofnewboardwalk..Remove30feet(180squarefeet)ofexistingboardwalk..Placeneweducationalsignagealongboardwalk..Preventshorelineerosionorsedimenttransporttotheextentpossible.TheproposedBirdIslandShorelineEnhancementprojectincludespublicaccessandrecreationimprovementsaswellasshorelineandwetlandandwetlandbufferenhancements.ExistingregionalparksareanoutrightpermittedusewithintheR-1zone.BelowisStaffsanalysisoftheproject’scompliancewiththeShorelineMasterProgramrelatedtotheaboveportionsoftheproposedenhancementproject.PublicAccess:InaccordancewithRMC4-3-090D.4.f,PublicAccessRequirementsbyReach,publicaccessisoneelementofparkfunctionsthatshouldbecontinuedandincorporatedinfutureplansandbalancedwithgoalsforrecreationandimprovingecologicfunctions.PublicaccessiscurrentlyprovidedontoBirdIslandviaatimberboardwalk,whichprovidesaccesstoapproximately50percentoftheisland’sperimeter.Numerousnativeandnon-nativespeciesofplantsandanimalsutilizetheislandforhabitat,butthishabitatiscurrentlydisturbedbyvirtuallyunrestrictedhumanaccessoffthedesignatedtrail.Erosionandscarpsalongtheshorelineoftheislandhaveexposedsomeoftheconcreteandsteeldebris.Aspartoftheproposedrestoration,30feetofexistingboardwalkwouldberemovedand200feetofnewboardwalkwouldbeconstructed.Thenewboardwalkwouldextendintoalooptodiscourageoff-pathtravelandkeepvisitorsmoving.Thescopeofworkwillincludetheinstallationofshallowtimberfoundations,stringers,anddecking.Thisdesignmaximizesthescenicpotentialofthelocationbyprovidingnewboardwalkaccesstothehighestpointontheisland,viaatimberpathtravelingalongthenorthwestshorelineoftheIsland.AllnewandexistingboardWalkswillhaveguardrailsonbothsidesandwillbeADAaccessible.Thisconceptprovidesawiderbufferforoverhangingvegetationalongtheshorelineandallowsfortreestobeplantedinthecenterofthesitetoprovideshadingoftheshorelineandtheboardwalk.ThenewboardwalkwillprovidetwobenchesandthreeeducationalsignsthatwilltellthestoryofmigratingsalmonandPage3of7 BirdIslandShorelineRestorationProjectPage4of7February4,2016educatevisitorsabouttheimportanceofthehabitatandtherestorationeffortsthathavebeencompletedonthesouthendofthelake.Theproposedprojectwouldmaintainpublicaccesstotheislandwhileenhancingthehabitatfunctionsthroughtheproposedrestorationactivities.VegetationConservation:PursuanttoRMC4-3-090F.1.gBufferEnhancement,bufferenhancementasaseparateactionmaybeproposedonanypropertyandmaybeimplementedwithoutfullcompliancewiththestandardsofthisSection;provided,thattheprojectincludesabufferenhancementplanusingnativevegetationandprovidesdocumentationthattheenhancedbufferareawillmaintainorimprovethefunctionalattributesofthebuffer.Anychangetoexistingnonconformingfacilitiesoruseonasiteshallmeettheprovisionsfornonconformingsites.Theproposalincludesshorelinerestorationaswellastheenhancementoftheonsitewetland(WetlandA)andbufferarea.AHabitatReportandLakeStudy,CriticalAreasStudy,andRestorationplansweresubmittedwiththeprojectapplication.Aspreviouslydiscussedabove,theproposalincludestheremovalofexistinginvasiveplantsandtheinstallationofnativeplantingswithinthewetlandandbufferareaswhichencompasstheentireisland.AccordingtothesubmittedHabitatReportandLakeStudy,theproposedenhancementactivitieswouldresultinnonetlossofecologicalfunctionsandprocessesandwillprovideafunctionalliftofthehabitatontheisland.LandfillandExàavation:PursuanttoRMC4-3-090F.2.aLandfillandExcavationshallonlybepermittedinconjunctionwithanapproveduseordevelopmentandallowedwithassuranceofnonetlossofshorelineecologicalfunctions.Aspreviouslydiscussedabove,thescopeofworkforthisprojectincludestheremovalofdebristhatislitteredaroundtheshoreline(someofwhichisbelowtheOHWM),removalofinvasiveplants,nativeplantings,placementofsedimentforshallowwaterjuvenilefishhabitat,placementoflargewood,andtrailimprovements.ThepurposeoftheimprovementsistoimproveecologicalfunctionsalongtheshorelineaswellaswithinWetlandAandtheassociatedbufferareas.Theproposedenhancementsincludetheplacementofapproximately2,700cyofsubstrateenhancement(fishmix,consistingofcleansandandfinegravel,(1,950cybelowtheOHWLand750cyaboveOHWL)),alongtheshorelinetoincreaseandenhancejuvenileChinookhabitat.Inaddition,approximately321cyofdebriswouldberemovedfromtheshoreline(weightof250tonsofsoil,sand/gravel,andboulder-sizedparticles,representinga60-to-40%mixofdirtandsteel/concreterespectively).RMC4-3-090F.2.bprovidesCriteriaforAllowingLandfillsandExcavationsBelowOrdinaryHighWaterMark,landfillsandexcavationsshallgenerallybeprohibitedbelowtheOHWM,exceptforthefollowingactivities,andinconjunctionwithdocumentationofnonetlossofecologicalfunctionsasdocumentedinappropriatetechnicalstudies.Theapplicablecriteriaislistedbelow:I.Beachoraquaticsubstratereplenishmentinconjunctionwithanapprovedecologicalrestorationactivity;StaffComment:Thepurposeofthefillandgradingalongtheisland’sshorelineistocreateshallowwaterhabitatformigratingjuvenileChinooksalmonbyplacingapproximately2,700cyPage4of7 BirdIslandShorelineRestorationProjectPage5of7February4,2016ofsandandfinegravel.Thegradingandplacementofapproximately358cyoftopsoilandmulchontheislandwillhelpremoveinvasiveseedstockandimprovethequalityofsoilsfornewnativeplantsinwhichtogrow.Approximately16.8cyofcrushedsurfacebasecoursematerialwillbeusedtosetthenewboardwalkfoundation.Theoriginofallthefillwillbeacleancommercialproductspecifiedbythecontractor.Totalanticipatedexcavation(uplandofQHWL)isestimatedtobe33.4cy.Thisexcavationmaybeneededtomeettheappropriategradesfortheconstructionofthenewboardwalk.TOTALFILLLocationTypeoffillEstimatedQuantitySource_____________________(cy)LakeWAbelowOHWLSand/FineGravel(fish1,857Cleancommercialmix)productWetlandAaboveSand/FineGravel(fish129CleancommercialOHWLmix)productWetlandAbelowSand/FineGravel(fish93CleancommercialOHWLmix)productWetlandABufferSand/FineGravel(fish621CleancommercialaboveOHWLmix)productTotalSand/FineGravel(fish2,700Cleancommercialmix)productWetlandAvegetationTopsoil/Compostand141CleancommercialenhancementareamulchproductLakeWAaboveOHWLTopsoil/Compostand217Cleancommercial(WetlandAbuffer)mulchproductTotalTopsoil/Compostand358CleancommercialmulchproductWetlandABufferCrushedSurfaceBase16.8CleancommercialaboveOHWLCourse(CSBC)productSECTION-TOWNSHIP-RANGE:SW%ofSection5,Township23N,andRange5EW.M.LEGALDESCRIPTION:(PerKingCo.AssessorsRecords)HILLMANSLKWNGARDENOFEDEN#5BLKS360&361SDADD1GWSHLDSADJTGWPORGL4SEC05-23-05&SHLDSAD]DAF-BAAPN56-32-07W65.01$FTFRNXNOFGOVMDRLN&SLNSDSEC5THN56-32-07W1221.7$FTTOINNERHARBORLNTHS45-45-00W317.92FTTHS44-16-00E680FTM/LTOSLNOFSDSEC5THEALGSDSLNOFSDSEC765.5FTM/LTOWLYBNDRYOFBN100FTR/WTHNELYALGSDWLYBNDRYTOPOINTOFBEGINNING1GWAREAINFRONTOFLOTS1THRU9BLOCK360OFHILLMANSLKWNGARDENOFEDEN#5Page5of7 BirdIslandShorelineRestorationProjectPage6of7February4,2016WATERBODYIWETLAND:LakeWashingtonIWetlandAAnexemptionfromaShorelineManagementSubstantialDevelopmentPermitisherebyapprovedontheproposedprojectinaccordancewithWatershedrestorationprojectsasdefinedherein.Localgovernmentshallreviewtheprojectsforconsistencywiththeshorelinemasterprograminanexpeditiousmannerandshallissueitsdecisionalongwithanyconditionswithinforty-fivedaysofreceivingallmaterialsnecessarytoreviewtherequestforexemptionfromtheapplicant.Nofeemaybechargedforacceptingandprocessingrequestsforexemptionforwatershedrestorationprojectsasusedinthissection.(I)“Watershedrestorationproject”meansapublicorprivateprojectauthorizedbythesponsorofawatershedrestorationplanthatimplementstheplanorapartoftheplanandconsistsofoneormoreofthefollowingactivities:(A)Aprojectthatinvolveslessthantenmilesofstreamreach,inwhichlessthantwenty-fivecubicyardsofsand,gravel,orsoilisremoved,imported,disturbedordischarged,andinwhichnoexistingvegetationisremovedexceptasminimallynecessarytofacilitateadditionalplantings;(B)Aprojectfortherestorationofanerodedorunstablestreambankthatemploystheprinciplesofbioengineering,includinglimiteduseofrockasastabilizationonlyatthetoeofthebank,andwithprimaryemphasisonusingnativevegetationtocontroltheerosiveforcesofflowingwater;or(C)Aprojectprimarilydesignedtoimprovefishandwildlifehabitat,removeorreduceimpedimentstomigrationoffish,orenhancethefisheryresourceavailableforusebyallofthecitizensofthestate,providedthatanystructure,otherthanabridgeorculvertorinstreamhabitatenhancementstructureassociatedwiththeproject,islessthantwohundredsquarefeetinfloorareaandislocatedabovetheordinaryhighwatermarkofthestream.ThesubjectprojectisanenhancementprojectdesignedtoimprovehabitatforjuvenileChinooksalmonandthereforewouldbeconsideredawatershedrestorationprojectdesignedtoimprovefishandwildlifehabitat.TheproposeddevelopmentisConsistentorInconsistentwith:ConsistentPoliciesoftheShorelineManagementAct.N/ATheguidelinesoftheDepartmentofEcologywherenoMasterProgramhasbeenfinallyapprovedoradaptedbytheDepartment.ConsistentTheCityofRentonShorelineMasterProgram.SIGNATURE&DATEOFDECISION:Page6of7 BirdIslandShorelineRestorationProjectPage7of7February4,2016]fr(jIJenniferHenning,PlanningDirectorDateDepartmentofCommunity&EconomicDevelopmentAttachments:.Vicinity/NeighborhoodDetailMap.ProjectNarrativeaHabitatDataReportandLakeStudy(datedDecember9,2015).aRestorationPlanSet(datedDecember2015).aCriticalAreasStudy,preparedbyHartCrowser(datedDecember2,2015).aAdvisoryNotestoApplicantcc:CityofRenton/OwnerPage7of7 BirdIslEidNeirihborhociDetailMapIApproximateProjectLocation—ApproximatePropertyBoundries:;-AiI\EveryattemptwasmadetousethemostaccurateandCurrentgeographicdataaspossible.However,duetomultiplesources,scales,andcurrentnessofthedatausedtodevelopthismapWashingtonDepartmentofNaturalResourcescannotacceptresponsibilitiesforerrorsandomissionsinthedata.Furthermore,thisdataisnotsurveygradeinformationandcannotbesubstituteäintheplaceofanofficialsurvey.Therefore,therearenowarrantiesthataccompanythismaterial.0I’‘•1/,.L’.cI6ZO’;5.,%Feetinch=200feetIIIIIIII] CC’.BirdIslandShorelineEnhancementProjectProjectNarrativeLocationBirdIslandisstateownedproperty,managedbytheCityofRentonParksDepartmentlocatedinGeneCoulonMemorialBeachPark1201LakeWashingtonBoulevardNorth,Renton,WA98056.ProposalDNRinpartnershipwiththeCityofRentonCommunityServicesDepartmentisproposingtoenhanceapproximately525feetofshorelinehabitatandapproximately0.4acresofuplandhabitatwiththegoaltoimprovethemigratoryandrearinghabitatforjuvenileChinooksalmonandpublicaccessforparkusers.Thescopeofworkincludesremovalofdebristhatislitteredaroundtheshoreline,removalofinvasiveplants,nativeplanting,placementofsedimentforshallowwaterhabitat,placementoflargewood,andtrailimprovements.Theprojectproposestoremovethemetalandconcretedebristhatisinthewateralongtheislandsshoreline,butnotbeneaththemudline.FishmixmaterialwillbeimportedtocreateshallowwaterhabitatwithappropriatesizedmaterialsforthemigratingjuvenileChinook.Thedesignalsoincludesplacementoftwoengineeredlogjamsonthenorthernsideoftheislandtoincreasehabitatcomplexity,controlsedimentdrift,andhelppreventfutureerosion.Atenfootminimumzoneofnativemixedwetlandandriparianspecieswillbeplantedbetweentheedgeofthenewshorelineandtheedgeofthetimberpathway.Beyondthiszone,areascurrentlydenudedoroccupiedbyinvasivespecieswillbeclearedandrevegetatedwithnativespecies.Plantingswillbeintegratedintothebankinordertomaximizeoverhangingandriparianvegetation.Largertreeswillbeplantedfurtheruplandinordertoprovidefurthershadingoftheshoreline.Plantingwouldalsoimprovestructuralandspeciesdiversityandincludenativeemergent,shrub,andtreespecies.Atemporaryirrigationlinewillberequiredtosustaintheplantings.AconnectiontotheGeneCoulonvIemorialBeachParkirrigationsystemandasmallplasticpipewillbeattachedundertheexistingbridge.Irrigationpipeswillbeinstalledongradethroughoutthenewplantings.DNRwillmonitorthesuccessofthenewvegetationandreplaceunsuccessfulplantingsforfiveyearsfollowingtheinitialplanting.Theprojectproposestoextendtheboardwalkintoalooptodiscourageoff-pathtravelandkeepvisitorsmoving.Thescopeofworkwillincludetheinstallationofshallowtimberfoundations,stringers,anddecking.Thisdesignmaximizesthescenicpotentialofthelocationbyprovidingnewboardwalkaccesstothehighestpointontheisland,viaatimberpathtravelingalongthenorthwestshorelineoftheIsland.AllnewandexistingboardwalkwillhaveguardrailsonbothsidesandwillbeADAaccessible.ThisconceptprovidesawiderbufferofoverhangingProjectNarrativePage1of6BirdIslandShorelineEnhancementProject Cvegetationalongtheshorelineandallowsfortreestobeplantedinthecenterofthesitetoprovideshadingoftheshorelineandtheboardwalk.Thenewboardwalkwillprovidetwobenchesandthreeeducationalsignsthatwilltellthestoryofthemigratingsalmonandeducatevisitorsabouttheimportanceofthehabitatandtherestorationeffortsthathavebeencompletedonthesouthendofthelake.Theprojectalsoproposestoremoveasectionoftheboardwalkthatwouldnotbeapartofthenewloopconcept.Thefollowingarealistoftheactionsthataredescribedabove..Enhanceshallowwaterhabitatbyplacingapproximately2,700cubicyards(cy)ofsubstrateenhancement(fishmix,consistingofcleansandandfinegravel,(1,950cybelowOHWL,750cyaboveOHWL),alongtheshorelinetoincreaseandenhancejuvenileChinookhabitat..Constructtwoengineeredlogjams(EUs).Place12anchoredlogs.Removeapproximately321cyofdebrisfromshoreline(weightof250tonsofsoil,sand/gravel,andboulder-sizedparticles,525tonsofsteel/concrete,representinga60-to-40%mixofdirtandsteel/concrete,respectively)ofdebrisfromshoreline.Removingnonnativeorinvasiveplantstotheextentpossible.Plantnative,emergent,and/orriparianvegetationalongtheshorelineanduplandtocontrolpublicaccessandenhancehabitatforotherspecies.Protectexistingnativevegetation.Enhance8,777squarefeetofexistingwetlands.Improveexistingpublicaccesstrailwithnewrailingsandincreasetheboardwalktrailsystemby200linealfeetwithanewandimprovedloop.Cutfill,setfoundations,stringers,deck,andrailcomprising200feet(1,200squarefeet)ofnewboardwalk.Remove30feet(180squarefeet)ofexistingboardwalk.Placeneweducationalsignagealongboardwalk.PreventshorelineerosionorsedimenttransporttotheextentpossibleSeetheattachedJARPAdesigndrawingsforadditionalinformationontheproject.BasisfortheexemptionrequestDNRbelievesthisprojectisexemptperthe“watershedrestorationprojects”categoryfortheshorelinepermit.Theprojectsisprimarilydesignedtoimprovefishandwildlifehabitat,removeimpedimentstomigrationoffish,andenhancethefisheryresourceavailableforusebyallofthecitizensofthestate.Theprojectwillhaveanonetlossofecologicalfunctionsandprocessesandwillprovideafunctionalliftofthehabitatontheisland.PleaseseetheHabitatReportandLakeStudyaswellastheCriticalAreasReportformoreinformationonthefunctionallift.ProjectNarrative.Page2of6BirdIslandShorelineEnhancementProject CCThisprojectislistedasprojectnumberC266AonthethreeyearworkplanundertheWaterResourceInventoryArea(WRIA)8ChinookSalmonConservationPlan.ThisprojectisaTier1priorityundertheWRIA8planduetotheproject’slocationinamigratoryandrearingcorridorforChinooksalmon.ThisprojectwillaccomplishpriorityactionsundertheConservationPlanbyincreasingoverhangingvegetationandremovingdebrisalongtheshorelineandenhancingimportantshallowwaterhabitatsclosesttothemouthoftheCedarRiverwheresuchhabitatismostheavilyusedbyjuvenileChinooksalmon(Tabor2006).WorkScheduleTheuplandwork(e.g.trailrestoration,plantings)isproposedtooccurduringthespringof2017totheextentpossible.Thein-waterworkisproposedtooccurduringthesummerworkwindowbetweenJuly2017toAugust2017,whenthelakelevelisraisedby1.8feet,andpossiblyduringthewinterworkwindowofNovember2017toDecember2017.DNRhasrequestedanextensiononthebeginningandendoftherestrictivesummerworkwindowduetotheneedforadditionaltimetocompleteallofthein-waterworkduringonemobilizationandinoneworkwindowtotheextentpossible.PlantingsthatwilloccurbelowtheOHWLwillneedtobeplantedfollowingthein-waterwork.Scheduledmaintenanceandmonitoringaswellasregularparkmaintenanceactivitieswilloccurfollowingconstruction.RequiredPermitsDNRintendstoapplyforthefollowingpermitsforthisproject:.SEPA-DNR.ShorelineExemption-CityofRenton.HydraulicProjectApproval-WDFW.401-DOE.Nationwide27-ArmyCorpsofEngineersCurrentuseofthesite.Thismanmadeislandisstate-ownedaquaticlandsmanagedbytheWashingtonStateDepartmentofNaturalResources.TheislandislocatedinGeneCoulonMemorialBeachParkandincludedinaleasethatismanagedbytheCityofRentonParksDepartment.TheprojectislistedontheWRIA8threeyearworkplan.ThepropertyissurroundedbytheharborlimitsofLakeWashingtononallsidesexceptthesouth,whereitisborderingasmallpieceofprivatepropertyontheisland’ssouthwestcorner.TheislandwascreatedbytheplacementoffilloversteelmattingcommonlyknownasMarsdenmatting.Theexactdateofitsoriginalconstructionisunknown.Atimberbridgeprovidesaccesstotheislandfromthepark,becomingatimberboardwalkthatprovidesaccesstoapproximately50%oftheisland’sperimeter.ProjectNarrativePage3of6BirdIslandShorelineEnhancementProject (Numerousnativeandnon-nativespeciesofplantsandanimalsutilizetheislandforhabitat,butthishabitatiscurrentlydisturbedbyvirtuallyunrestrictedhumanaccessoffthedesignatedtrail.Erosionandscarpsalongtheshorelineoftheislandhaveexposedsomeoftheconcreteandsteeldebris.Previousstudiesandbackgroundinformationincludeabaselinesurveyandmonitoringsurvey.Thepreviousstudiesreportedminimalchangebetween2006and2010atthebluffandwaterline,suggestingthatshorelineerosionisarelativelyslowprocessThesestudieswerecomparedwithbathymetryreceivedinJune,2015,andconfirmedthatverylittlenear-shoreerosionhasoccurredinthedecade.Beyondtheimmediateshoreline,BirdIslandissurroundedbyashallowsubmergedareawhichextendstothenorthandwestfromtheisland.BirdIslandisalsoexposedtowindandwaveactioninLakeWashington.Acoastalengineeringanalysiswasperformedtodeterminethemagnitudeoftheseforces,aswellasthepossibilityofwindandwaveforcescontributingtositeerosion.Thisanalysisconcludedthatthelargestamountofwaveenergypresentatthesiteisgeneratedbywindsblowingfromthenorthwest.Asaresult,thenetsedimentdriftdirectionwillbefromthenorthwesterntipoftheislandtothesouthandeastshorelinesoftheisland.DuetotherelativelylowenergyofwavesoccurringinLakeWashington,however,therateoferosionandsubsequentdrifiislow.DriftcellsinLakeWashingtonhavenotbeenmapped,soitisunknownifsedimentfromareasoutsidetheprojectareawilldepositwithintheareaovertime.SpecialsitefeaturesBirdIslandisinLakeWashington,whichisdesignatedasaTypeSwaterbodyunderRMCSection4-3-050(CityofRenton2015).RegulationsforTypeSwaterbodiesaredescribedinRMC4-3-090,ShorelineMasterProgramRegulations.UnderRMC4-3-090,LakeWashingtonisdesignatedaShorelineofStatewideSignificanceintheshorelinehigh-intensityoverlaydistrict.Thejurisdictionalareaofshorelinesofstatewidesignificanceis200feetfromtheOHWM.ThelakelevelisregulatedbythelocksinSeattle.TheOHWMinsummeris21.7feetandtheordinarylowwatermark(OLWM,inwinter)is20feet.Onewetland,WetlandA,wasdelineatedwithintheprojectlocation.Thewetlandis9,750squarefeet,or0.22acres.WetlandAconsistsofshrubandemergentcommunitiesthatarelocatedaiongtheshorelineofLakeWashingtonandwithinaswalethatbisectstheisland.ThewetlandratingforthiswetlandisCategoryII.TheCityofRenton’srecommendedbufferrangeforthiswetlandis150feet.BirdIslandencompassestheentire150footwetlandbufferarea.Theuplandbufferareasconsistofaboardwalk,mowedlawns,shrubhabitat,ormixedconiferousanddeciduoustrees.PleaseseetheCriticalAreaReportandHabitatReportandLakeStudyformoreinformationaboutthespecialfeaturesofthesite.SoiltypeanddrainageconditionsBirdIslandisamanmadeartificialislandcomprisedmostlyofunconsolidatedfill,ProjectNarrativePage4of6BirdIslandShorelineEnhancementProject CCincludingsands,somesiltysoilshitheuplandportionoftheisland,andgravels,cobble,andlargerrocksalongtheshoreline.Totalestimatedconstructioncost$726,140EstimatedquantitiesandtypeofmaterialsinvolvedifanyfillorexcavationisproposedThepurposeofthefillandgradingalongtheisland’sshorelineistocreateshallowwaterhabitatformigratingjuvenileChinooksalmonbyplacingapproximately2,700cubicyardsofsandandfinegravel.Thegradingandplacementofapproximately358cubicyardsoftopsoilandmulchontheislandwillhelpremoveinvasiveseedstockandimprovethequalityofsoilsfornewnativeplantsinwhichtogrow.Approximately16.8cubicyardsofcrushedsurfacebasecoursematerialwillbeusedtosetthenewboardwalkfoundation.Theoriginofallthefillwillbeacleancommercialproductspecifiedbythecontractor.Totalanticipatedexcavation(uplandofOHWL)isestimatedtobe33.4cubicyards.Thisexcavationmaybeneededtomeettheappropriategradesfortheconstructionofthenewboardwalk.TOTALFILLLocationTypeoffillEstimatedSourceQuantity(cubicyards)LakeWAbelowSand/FineGravel(fishI857CleancommercialproductOHWLmix)WetlandAaboveSand/FineGravel(fish129CleancommercialproductOHWLmix)WetlandAbelowSand/FineGravel(fish93CleancommercialproductOHWLmix)WetlandABufferSand/FineGravel(fish621CleancommercialproductaboveOHWLmix)TotalSand/FineGravel(fish2,700mix)WetlandATopsoil/Compostand141CleancommercialproductvegetationmulchenhancementareaLakeWAaboveTopsoil/Compostand217CleancommercialproductOHWL(WetlandAmulchbuffer)TotalTopsoil/Compostand.358mulchWetlandABufferCrushedSurfaceBase16.8cyCleancommercialproductaboveOHWLCourse(CSBC)OHWL-ordinaryhighwaterlineProjectNarrativeBirdIslandShorelineEnhancementProjectPage5of6 CCNumber,typeandsizeofanytreestoberemovedThetreescurrentlylocatedonthesitewillnotberemoved.DistancefromclosestareaofworktotheOHWMoftheshorelineWorkwillbeoccurringwithinLakeWashington.NatureoftheexistingshorelineTheshorelineiscurrentlydegradedduetotheconcreteandmetaldebris,shorelineerosion,andinvasivevegetation.TheordinaryhighwatermarkofLakeWashingtonvariesthroughouttheyear.Inthesummer,theOHWMiselevation21.7feet,andinthewinteritis20feet.ProjectNarrativePage6of6BirdIslandShorelineEnhancementProject DHABITATREPORTANDLAKESTUDY- . ,,.BirdIslandShorelineEnhancementProjectPreparedbytheWashingtonStateDepartmentofNaturalResourcesUiJIDUDecember9,2015.:Proposal.WashingtonStateDepartmentofNaturalResources(DNR)inpartnershipwiththeCityofRentonCommunityServicesDepartmentisproposingtoenhanceapproximately525feetofshorelinehabitatandapproximately0.4acresofuplandhabitatwiththegoaltoimprovethemigratoryandrearinghabitatforjuvenileChinooksalmonandpublicaccessforparkusersonandaroundBirdIsland.BirdIslandisstateownedproperty,managedbytheCityofRentonParksDepartmentlocatedinGeneCoulonMemorialBeachPark1201LakeWashingtonBoulevardNorth,Renton,WA98056.Thefollowingactionsareproposedtomeettherestorationobjectives..Enhanceshallowwaterhabitatbyplacingapproximately2,700cubicyards(cy)ofsubstrateenhancement(fishmix,consistingofcleansandandfinegravel,(1950cybelowOHWL,750cyaboveOHWL),alongtheshorelinetoincreaseandenhancejuvenileChinookhabitat..Constructtwoengineeredlogjams(ELJ5).Placel2anchoredlogs.Removeapproximately321cyofdebrisfromshoreline(weightof250tonsofsoil,sand/gravel,andboulder-sizedparticles,525tonsofsteel/concrete,representinga60-to-40%mixofdirtandsteel/concrete,respectively)ofdebrisfromshoreline.Removingnonnativeorinvasiveplantstotheextentpossible.Plantnative,emergent,and/orriparianvegetationalongtheshorelineanduplandtocontrolpublicaccessandenhancehabitatforotherspecies.Protectexistingnativevegetation.Enhance8,777squarefeetofexistingwetlands.Improveexistingpublicaccesstrailwithnewrailingsandincreasetheboardwalktrailsystemby200linealfeetwithanewandimprovedloop.Cutfill,setfoundations,stringers,deck,andrailcomprising200feet(1200squarefeet)ofnewboardwalk.Remove30feet(180squarefeet)ofexistingboardwalk.Placeneweducationalsignagealongboardwalk.PreventshorelineerosionorsedimenttransporttotheextentpossibleCurrentSiteConditionsBirdIslandisamanmadeislandthatisstate-ownedaquaticlandsmanagedbytheWashingtonStateDepartmentofNaturalResources.TheislandislocatedinGeneCoulonMemorialBeachParkandincludedinaleasethatismanagedbytheCityofRentonParksDepartment.TheprojectislistedontheWRIA8threeyearworkplan.ThepropertyissurroundedbytheharborlimitsofLakeWashingtononallsidesexceptthesouth,whereitisborderingasmallpieceofprivatepropertyontheisland’ssouthwestcorner.TheislandwascreatedbytheplacementoffilloversteelmattingcommonlyknownasMarsdenmatting.Theexactdateofitsoriginalconstructionisunknown.AtimberbridgeprovidesaccessHabitatReportandLakeStudyIBirdIslandShorelineEnhancementProject D)totheislandfromthepark,becomingaUmberboardwalkthatprovidesaccesstoapproximately50%oftheisland’sperimeter.Numerousnativeandnon-nativespeciesofplantsandanimalsutilizetheislandforhabitat,butthishabitatiscurrentlydisturbedbyvirtuallyunrestrictedhumanaccessoffthedesignatedtrail.Erosionandscarpsalongtheshorelineoftheislandhaveexposedsomeoftheconcreteandsteeldebris.•CurrentHabitatConditionsThehabitatiscurrentlydegradedduetoshorelineerosion,uncontrolledpublicaccess,concreteandmetalshorelinedebris,andinvasivespecies.Weedsofconcernincludetheyellow-flagiris(irispseudacorus),reedcanarygrass(Phalarisaurndianacea),Himalayanblackberry(Rubusarmeniacus),allClassCNoxiousWeedinKingCounty,andtansyragwort(Seneciojacobaea)aClassBNoxiousWeedinKingCounty.Thereare25÷deciduoustreesgrowingontheislandincludingPacificwillow(Salixiucida),Oregonash(Fraxinusiatifoiia),redalder(Ainusrubra),weepingwillow(Saiixbabylonica)andtwocherrytrees.Avarietyofemergent,shrubs,andgrassesaregrowingonthepropertyincludinghedgenettle(Stachyssp.),tallmannagrass(Giyceriaelata),bentgrass(Agrostissp.),snowberry(Symphoricarposalbus),andNootkarose(rosanutkana).BirdIslandisinLakeWashington,whichisdesignatedasaTypeSwaterbodyunderRMCSection4-3-050(CityofRenton2015).RegulationsforTypeSwaterbodiesaredescribedinRMC4-3-090,ShorelineMasterProgramRegulations.UnderRMC4-3-090,LakeWashingtonisdesignatedaShorelineofStatewideSignificanceintheshorelinehigh-intensityoverlaydistrict.Thejurisdictionalareaofshorelinesofstatewidesignificanceis200feetfromtheOHWM.ThelakelevelisregulatedbythelocksinSeattle.TheOHWMinsummeris21.7feetandtheordinarylowwatermark(OLWM,inwinter)is20feet.ThissiteispartofthePacificFlyway,anorth-southseasonalmigrationrouteformanybirdspecies.SouthLakeWashingtonisalsoamigratoryandrearingcorridorforChinooksalmon(Oncorhynchustshawytscha).Sockeyesalmon(Oncorhynchusnerka),PugetSoundcohosalmon(Oncorhynchuskisutch),andthePugetSoundsteelhead(Oncorhynchusmykiss)arealsofoundatthesite.JuvenileChinooksalmonarefoundinthelittoralzoneofLakeWashingtonbetweenJanuaryandJulyandwillmostlikelycongregateclosetotheshoresnearthemouthoftheCedarRiverinthebeginningofFebruarytotheendofMay(Tabor2006).Theprojectsiteisapproximately860metersawayfromthemouthoftheCedarRiver.TheshorelineoftheprojectsitehasthepotentialtoprovideimportantrearinghabitatforjuvenileChinooksalmonduetoitscloseproximitytothemouthoftheCedarRiver.Otherwildlifefoundatthesiteinclude;sculpin,threespinestickleback,yellowperch,freshwatershrimp,bulltrout,blueheron,andbaldeagle.BelowisatablethatlistsalloftheWashingtonStateDepartmentofFishandWildlife(WDFW)PrioritySpecies.AlakefringewetlandislocatedonthesiteandisaWDFWpriorityhabitat.SeetheCriticalAreaStudyformoreinformationonthewetlanddelineation.HabitatReportandLakeStudy2BirdIslandShorelineEnhancementProject StateStatusFederalStatusCommonNameScientificNameCandidateThreatenedbulltrout—dollyvardenSalvelinusconfluentus-S.malmaCandidateThreatenedPugetSoundChinookSalmonOncorhynchustshawytschaCandidateConcernCoho•OncorhynchuskisutchCandidateThreatenedsteelheadOncorhynchusmykissCandidateNonesockeyesalmonOncorhynchusnerkaNoneNonecoastalcutthroattroutOncorhynchusclarkiclarkiEndangeredConcernPacificpondturtleActinemysmarmorataNoneNonegreatblueheronArdeaherodiasSensitiveConcernbaldeagleHaliaeetusleucocephalusAccordingtotheWRIA8ChinookSalmonConservationPlanthefollowingarehabitatlimitingfactorsforChinooksalmoninLakeWashington.S.shorelinecomplexity.shorelinevegetation.degradedwaterquality.introducedplantspeciesProposedAlterationsClear/removeinvasiveplantsAlltheinvasiveplantsonthe0.4acresitewillberemoved.Invasiveplantswillberemovedwithhandtools.Monitoringoftheinvasiveplantswiltoccurandadaptivemanagementstrategieswiltbedevelopedtocontrolinvasiveplantsthatcontinuetogrowonthesite.PlantsiteTheobjectiveofthisproposalistoplantfourdifferentzonesofnativevegetation.ZoneIisapproximately3,452squarefeetoftakefringeemergent.ThiszoneislocatedbelowtheOrdinaryHighWaterMarkandincludesbulrushandsedgespecies.Zone2isapproximately,I61squarefeetofsloughemergentwettand.Thiszoneisasloughareathatrunsacrossthecenteroftheislandandiswetinthewinteranddryinthesummer.Thisareawiltbeplantedwithrushesandsedges.Zone3isapproximately4,164squarefeetandrunsalongtheislandsshoreline.Thisareawiltbeplantedwithwillowlivestakesanddogwood.Zone4isapproximately3,216squarefeetofuplandshrubandtrees.Thisarealocatedontheinsideoftheislandwiltbeamixofnativeshrubsandconifers.Plantingwilloccurbyhandusingappropriatehandtoolstodigholesandplacetheplantsintheground;Smallmachinerymaybeusedtogrublandandplacecompostandmulchduringplanting.RemoveexistingdebrisandplacefinegrainedsandandgravelalongshorelineApproximately321cubicyardsofmetalandconcreteshorelinedebrisfromupto6inchesbelowthesurfacewiltberemovedfromaroundBirdIsland’sshoreline.Oncethedebrishasbeenremovedacontractorwillplaceapproximately2,700cubicyardsoffinegravelandsandalongtheshorelinetocreateshallowwaterhabitat.HabitatReportandLakeStudy3BirdIslandShorelineEnhancementProject DIn-waterbasedmethodsmaybeutilizedtocompletetheplacementofthematerial.Equipmentmayincludeabarge,loader,dredgebucket,andconveyorbelt.Thesourceofthematerialisnotyetdetermined.Materialswillbeacommercialprojectwithhighqualitysuitableforfishrestorationprojectsinthelakeenvironment.Thematerialwillbeplacedalongtheshorelinetocreateshallowwaterhabitatandtomeettheexistingslope.PlaceEngineeredLogJamsandAnchoredLogsalongshorelineSixteenpilestructurelogsand26rootwadlogswillbeplacedalongtheshorelinetobuildtwoengineeredlogjamsandI2anchoredlogswillbeplacedalongtheshoreline.Equipmentmayincludeavibratoryhammer,load,excavator,orothersmallmachinery.Theengineeredlogsjamswillprotectthebeachfromwaveactionandsedimenttransport.Theanchoredlogswillhelpminimizeerosion.ThewoodwillcreateamorecomplexareaofrefugeformigratingjuvenileChinook.Construct200feetofnewboardwalkandremove30feetofexistingboardwalkThisworkwilloccurwithinthewetlandbuffer.Areaswillbecutandfilledtomeettheappropriategradetosetfoundations,approximately20sleepers,stringers,andinstallthedeckandrailing.Approximately33.4cubicyardsofexcavationwilloccurand16.8cubicyardsofcrushedsurfacebasecoursematerialwillbeusedtosettheboardwalkfoundation.Smallequipmentsuchashammersandsawswillbeused.Othersmallmachinerymaybeusedtotransportandplacethematerialsontothesite.Neweducationalsignageandbencheswillalsobeinstalledaspartoftheboardwalkconstruction.Thirtyfeet(180squarefeet)ofexistingboardwalkwillberemoved.ImpactEvaluationTheprojectwillhaveanonetlossofecologicalfunctionsandprocessesandwillprovideafunctionalliftofthehabitatontheisland.ShorelandsThepurposeofthisproposalistoenhancethehabitatatthesite.Inordertorestoretheareatherewillbeshorttermimpactsduringtheconstruction.Theprojectsconstructionwilltemporarilyaffectsediment,substrateembeddedness,largewoodydebris,andrefugiabutwill’resultinlong-termimprovementstoothertargetindicators,includinglargewoodydebris,refugiahabitat,andthefunctionofriparianreserves.Theshorttermimpactsoftheprojectconstructionarenotlikelytoadverselyaffectthepriorityspeciesthatutilizethearea.Theremovalofinvasiveplantsandgradingontheuplandportionofthesitewillreestablishtheareawithnativevegetationandimmenselyimprovethecurrenthabitatconditions.Theshorttermimpactsofplacingthebeachmaterialwillprovidelongtermbenefitsbycreatingshallowwaterhabitatformigratingsalmonthatrearalongtheprojectsshoreline.Methodswillbedevelopedtoavoidimpactsorminimizetheshorttermimpacts.BestManagementPractices(BMP5)willbeinplaceduringconstruction.InwaterworkwillonlyoccurduringtheWDFWpermittedwindows.Aturbiditycurtainwillbeplacedinthelakesurroundingtheconstructionarea.ThecontractorwillberequiredtohaveaSpillPreventionControlandCountermeasuresplaninplaceduringtheproject.ThenativevegetationwillremainHabitatReportandLakeStudy4BirdIslandShorelineEnhancementProject Donsiteandbeprotectedduringconstruction.Thecontractorwillberequiredtocontrolerosion,runoffandturbidity.Anerosionandsedimentcontrolplanwillbeinplaceduringtheconstructionoftheproject.BMPssuchasthefollowingmaybeinplacetominimizedisturbance:.Designatedlayoutarea.Bufferzonesfornativevegetationthatwillremain.Stabilizeexposedsoils.SpillPreventionandControlPlan.Coirlogs.Strawwaddles.TurbidityCurtainsWetland/WetlandBufferA9,750squarefootCategoryIIlakefringewetlandislocatedonBirdIsland.TheCityofRentonMunicipalCodesregulatesthatthistypeofwetlandhasaI50footbuffer.DuetothesizeoftheislandtheI50footbufferencompassestheentireisland.Theriparianwetlandonthenorthandwestoftheislandhaserodedandmuchofthesloughwetlandislackingvegetationorisinvadedwithnoxiousweeds.Therewillbenopermanentadverseimpactstothewetland.Theexistingsignificantlydegradedwetlandwillbeenhancedwithnewnativeplantings.ThesizeoftheexistingwetlandwillincreasetoI3,400squarefeetoncetheprojectiscomplete.Permanentimpactstotheuplandwetlandbutterwilloccurwiththeadditionalconstructionofthe200feet(1,200squarefeet)ofboardwalktrail.Thenewboardwalkwillnotbelocatedwithinthewetland,howeveritwillbelocatedinthewetlandbufferduetotheI50footbufferencompassingtheentireisland.ThenewboardwalktrailwillnotsignificantlyaffectthefunctionofthewetlandorI50footbuffer.Thelocationforthenewtrailcurrentlylacksvegetation.Thepubliciscurrentlywalkingovertheentireisland.ThenewboardwalksystemwillencouragethepublictostayontheboardwalkloopsystemwithnewbenchesandeducationalsignageandviewpointsouttotheLakeandtheenhancedshorelineandwetland.Theintentionofthenewboardwalkdesignistoallowthepublictoenjoythesiteandatthesametimeprotecttheimportantwetlandandshorelinehabitatfeatures.Theprojectwillremove30feetofexistingboardwalkcreatingI80squarefeetofnewvegetatedhabitat.Theprojectwillenhance8,777squarefeetofthewetlandand3,216squarefeetofwetlandbuffer.Atotalof11,993squarefeetofBirdIslandwillbeplantedwithnativevegetationprovidingasignificantfunctionallisttotheaquatichabitatontheisland.PleaseseetheCriticalAreaStudyforfurtherinformationonthefunctionalliftanalysis.TheBMPslistedabovewillbeinplacetoprotectthewetlandduringtheconstructionoftheproject.Alltheexistingtreeswillremainonthesiteandnativevegetationwillbeprotectedtotheextentpossibleduringconstructionoftheproject.Atemporaryirrigationsystemwillbeinstalledontheislandtohelpensureplantsurvival.Thenewvegetationwillbemonitoredforfiveyearsfollowingthecompletionoftheprojecttoassurehealthyandviableplants.HabitatAnalysisCurrentconditionsalongthesouthernshorelineofLakeWashingtonincludeextensiveshorelinearmoring,paving,andbuildingsincloseproximitytotheshoreline.Over70percentoftheLakeWashingtonshorelineisretainedbyeitherrip-raporbulkheads.Moreover,eliminationoflargeHabitatReportandLakeStudy5BirdIslandShorelineEnhancementProject Dwoodydebrisandtheintroductionofnonnativespeciesareimpactingthelake’secosystem(Kerwin2001).Thiscommondevelopmentalongthelakehascausedthelossofgentlyslopedbeaches,woodydebris,andoverhangingvegetationthatprovideimportanthabitatformigratingjuvenileChinooksalmon.StudieshaveshownthathighernumbersofjuvenileChinookarefoundalongunarmoredshorelinesversusarmoredshorelines(Tabor2006).Alloftheseusesalongthelakelimittheopportunitiestoprovideimprovedshallowwaterhabitatforjuvenilesalmonrearing.ThisprojectprovidesauniquerestorationopportunityalongthesouthernshorelineofLakeWashingtonthatwillmarkedlyimproverearingconditionsforjuvenilesalmonidsoutmigratingfromtheCedarRiver.TheprojectsiteisincloseproximitytothemouthoftheCedarRiverandprovidesarelativelylongstretchofshorelinewhereshallowwaterandriparianconditionscanreadilybeenhancedtosupportjuvenilesalmonrearing.TheproximitytotheCedarRiverisakeyattributeofthissitebecausefishutilizationresearchhasdocumentedthegreateroutmigratingsalmonuseofshorelinesclosertotheriver(Taboretal.2004and2006).Taboretal.(2006)documentedalogarithmicrelationshipbetweenthedistancetotheCedarRiverandthedensityofjuvenileChinooksalmonbetweenFebruaryandMay.Theprojectsiteis860metersfromthemouthoftheCedarwhereChinookdensitiesincreasesharply.AccordingtotheWRIA8ChinookSalmonConseivationPlanthefollowingarehabitatlimitingfactorsforChinooksalmoninLakeWashington..shorelinecomplexity.shorelinevegetation.degradedwaterquality.introducedplantspeciesTheBirdIslandShorelineEnhancementProjectisaddressingtheLakeWashingtonhabitatlimitingfactorsbydesigningaprojectthatwillprovideamorecomplexshorelinewithoverhangingnativevegetation,woodydebris,andshallowbeachhabitat.TheseshorelinehabitatconditionsareparticularlyimportantforjuvenileChinookfromtheCedarRiverpopulation(WRIA8ChinookSalmonConservationPlan).TheproposedshallowshorelinewillprovideanareaforjuvenileChinooksalmontorearinandreducetheriskofpredationthatcurrentlyexistswiththedebrisandlackofshorelinevegetation.InitialstudiesattheneighboringSouthLakeWashingtonShorelineRestorationsiteindicatedthatchangingthesubstratesizetosandandgravelfromcobbleimprovedhabitatconditionsforjuvenileChinooksalmon.(Tabor2015).RestorationsitesclosetothemouthoftheCedarRiverarelikelytohaveahigherchanceofsuccessthannorthernsitesbecausejuvenileChinooksalmonaresubstantiallymoreabundantnearthemouthoftheCedarRiverthanatmorenortherlysites(Tabor2006).VarioussurveysofLakeWashingtonindicatethatoverheadvegetativecoverwithorwithoutsmallwoodydebrisisanimportanthabitatfeatureforjuvenileChinooksalmon.Currentlythesiteprovidesalimitedamountofthistypeofhabitatfeature.TheprojectwillincreasetheHabitatReportandLakeStudy6BirdIslandShorelineEnhancementProject overheadcoveralongtheshorelinewhichmayprovidejuvenileChinookvisualrefugefromfishandbirdpredators(labor2006).Withthecompletionofthisproposalthehabitatwillbeimprovedforallofthepriorityspecies.Oncetheshorelineisrestoreditwillprovidecomponentsthatcreatefunctionalsalmonhabitatconditionswithanaturallyslopedshoreline,nativevegetation,largewoodydebris,andappropriatesizedsubstrates.AllofthesefunctionshelpmeetthegoalssetintheWRIA8ChinookSalmonConservationPlan,whichstatesthattherestorationofLakeWashingtonisahighpriorityforregionalrestorationeffortsandtheremainingareaswithsandyshallow-waterhabitat,overhangingvegetation,andlargewoodydebrisshouldbeprotectedandmaintained.PleasealsoseetheCriticalAreaStudy(2015)formoreinformationonthewetlandandfunctionalliftanalysis.ReferencesFinalLakeWashington/Cedar/SammamishWatershed(WRIA8)ChinookSalmonConservationPlan.2005.Johnson,L.Lyndal,MaryR.Arkoosh,ClaudiaF.Bravo,TracyK.Collier,MargaretM.Krahn,JamesP.Meador,MarkS.Myers,WilliamL.Reichert,andJohnE.Stein.TheEffectsofPolycyclicAromaticHydrocarbonsinFishfromPugetSound,Washington.TheToxicologyofFishes.2008.Kerwin,J.,2001.SalmonandSteelheadHabitatLimitingFactorsReportfortheCedar-SammamishBasin(WaterResourceInventoryArea8).WashingtonConservationCommission.Olympia,WATabor,A.Roger.2015.RestorationMonitoringofShuffletonPowerPlantflumeSiteinSouthLakeWashington,2015ProgressReport.Tabor,A.Roger,HowardA.Gearns,CharlesM.McCoylii,andSergioCamacho.2006.NearshoreHabitatUsebyJuvenileChinookSalmoninLenticSystemsoftheLakeWashingtonBasin.U.SFishandWildlifeServiceAnnualReport,2003and2004.Tabor,R.A.,M.T.Celedonia,F.Mejia,R.M.Piaskowski,DL.Low,B.Footen,andL.Park.2004.PredationofjuvenileChinooksalmonbypredatoryfishesinthreeareasoftheLakeWashingtonbasin.Miscellaneousreport.U.S.FishandWildlifeService,WesternWashingtonFishandWildlifeOffice,Lacey,Washington.HabitatReportandLakeStudy7BirdIslandShorelineEnhancementProject DATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCBIRDISLANDHABITATRESTORATIONVICINITYANDLOCATIONMAP1201LAKEWASHINGTONBLVD.RENTON,WA.98056KINGCOUNTYSEC.5,TWP.23N,RG.05EASTAPPLICATIONBY:DEPT.OFNATURALRESOURCESSHEET1of21DATE:DEC.2015PURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.LOCATIONMAPPROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA., CCBIRDISLANDHABITATRESTORATIONEXISTINGCONDITIONSANDTESCPLAN1201LAKEWASHINGTONBLVD.RENTON,WA.9805610IIIDEPARTMENTOFSITEPLANSCALE:1”=60’I/DEPARTMENTOFNATURALRESOURCESVVV7N\\I\\NAPPROXIMATETOEOFRESTOREOSHORELINENSTRAWWATTLEN/SECOTURBIDITYCURTAINPROERTYLINEEXISTINGBOARDWALKNCITYOFRENTONWETLANDBORDER0EXISTINGTREEEXIST1NGVEGETATiON7PURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADEaCOVERFORJUVENILESALMONIDS.DATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCPROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,RG.APPLICATIONBY:DEPT.OFNATURALRESOURCES05EASTSHEET2of21DATE:DEC.2015 CCLEARANDGRUBWITHINNEWTRAILFOOTPRINTLIMITSOF/FILLEXIS11NCBOARDWALKAREATOBECLEARED!DEMOLISHEDEXISTINGVEGETATiONPURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.SITEPLANSCALE:1”=6OCI/VVVVN1DEPARTMENTOFNATURALRESOURCES\1OHWLNN_N-—------RELOCATELOGN1LEGEND/NISECOCITYOFRENTONNEXISTINGTREEWETLANDBORDER————PROPERTYLINE0—.- -— -— - -— --CONTOURLINE7BIRDISLANDHABITATRESTORATIONDATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCDEMOLITIONPLAN1201LAKEWASHINGTONBLVD.RENTON,WA.98056PROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENC.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,APPLICATIONBY:DEPT.OFNATURALRESOURCESSHEET3of21DATE:DEC.2015RG.05EAST CCGENERALEROSION,SEDIMENTANDCONTAMINATIONCONTROLNOTES1)THEIMPLEMENTATIONOFTHESETESCPLANSANDTHECONSTRUCTION,MAJNTENANCE,REPLACEMENTANDUPGRADINGOFTHESETEMPORARYEROSIONSEDIMENTCONTROLPLANS(TESC)ANDFACIU11ESISTHERESPONSIBILITYOFThECONTRACTORUN11LALLCONSTRUCTIONISAPPROVED.2)THETESCFACILITIESSHOWNONThISPLANMUSTBECONSTRUCTEDPRIORTOORINCONJUNCRONWIThALLCLEARINGANDGRADINGSOASTOENSUREThATThETRANSPORTOFSEDIMENTTOSURFACEWATERS,DRAINAGESYSTEMS,ANDADJACENTPROPER]1ESISMINIMIZED.3)THETESCFACILITIESSHOWNONThISPLANAREThEMINIMUMREQUIREMENTSFORAN11CIPATEDSITECONDIRONS.DURINGTHECONSTRUC11ONPERIOD,ThESETESCFACILITiESSHALLBEUPGRADEDASNEEDEDFORUNEXPECTEDSTORMEVENTSANDMODIFIEDTOACCOUNTFORCHANGINGSITECONDITIONS(E.G.,ADDITIONALSUMPPUMPS,RELOCATIONOFDITCHESANDSILTFENCES,ETC.).4)THETESCFACILITIESSHALLBEINSPECTEDDAILYBYTHECONTRACTORANDMAINTAINEDTOENSURECONTINUEDPROPERFUNCTIONING.WRITTENRECORDSSHALLBEKEPTOFWEEKLYREViEWSOFTHETESCFACILIflESDURINGTHEWETSEASON.5)ANYAREASOFEXPOSEDSOILS,INCLUDINGROADWAYEMBANKMENTS,THATVLLNOTBEDISTURBEDFORTWODAYSDURINGTHEWETSEASONORSEVENDAYSDURINGTHEDRYSEASONSHALLBEIMMEDIATELY.STABILIZEDWTHTHEAPPROVEDTESCMETHODS(E.G.,MULCHING,PLASOCCOVERING,ETC.).6)ANYAREANEEDINGTESCMEASURESNOTREQUIRINGIMMEDIATEATTEN11ONSHALLBEADDRESSEDW1THINFIFTEEN(15)DAYS.7)THETESCFACIUTIESONINACTIVESITESSHALLBEINSPECTEDANDMAINTAINEDAMINIMUMOFONCEAMONTHORVTHINFORTY—EIGHT(48)HOURSFOLLOVNGASTORMEVENT.8)ATNOliMESHALLMORETHANONE(1)FOOTOFSEDIMENTBEALLOWEDTOACCUMULATEMTHINACATCHBASIN.ALLCATCHBASINSANDCONVEYANCELINESSHALLBECLEANEDPRIORTOPAViNG.ThECLEANINGOPERATIONSHALLNOTFLUSHSEDIMENT—LADENWATERINTOTHEDOWNSTREAMSYSTEM.9)STABILIZEDCONSTRUCRONENTRANCESANDROADSSHALLBEINSTALLEDATTHEBEGINNINGOFCONSTRUCTIONANDMAINTAINEDFORThEDURATIONOFTHEPROJECT.ADDITIONALMEASURES,SUCHASWASHPADS,MAYBEREQUIREDTOENSUREThATALLPAVEDAREASAREKEPTCLEANFORTHEDURATIONOFTHEPROJECT.WHEREMULCHFORTEMPORARYEROSIONCONTROLISREQUIRED,ITSHALLBEAPPLIEDATAMINIMUMThICKNESSOF2TO3INCHES.NOSTRAWORHAYBALESPERMITTED.10)DURINGTHEPERIODOFNOVEMBER1ThROUGHMARCH31,ALLPROJECTDISTURBEDAREASGREATERThAN5,000SQUAREFEETANDWHERENOFURTHERWORKISANOCIPATEDFORAPERIODOFFIFTEEN(15)DAYS,SHALLBECOVEREDBYONEOFThEFOLLOWINGCOVERMEASURES:MULCHORPLASI1CCOVERING.NOTTOSCALEPURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISH!IMPROVESHORELINEWITHFOOD,a-SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)TESCDETAILSAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:1.CITYOFRENTONSEC.5,TWP.23N,RG.05EAST2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:U)RENTON,WA.98056DEPT.OFNATURALRESOURCES%SHEET4of21DATE:DEC.2015STRAWWADDLETURBIDITYCURTAINNOTTOSCALE ICITYOFRENTON\N05EAST(CI/PROPOSEDTOEOFSHORELINEIMPROVEMENTDEPARTMENTOFNATURALRESOURCES\LEGEND\—*—TOPOFPROPOSEDSHORELINE\\\\\\\\\\\\\\EXIS11NCBOARDWALK\J_I__WETLANDBOARDERSHORELINESECTION)(BULKHEADWALLNSEESHEET8—11NPARTIALSITE2,SEESHEET821\j—_IPURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.BIRDISLANDHABITATRESTORATIONDATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCSITEKEYANDPROJECTCONTROLPLAN1201LAKEWASHINCTONBLVD.RENTON,WA.98056PROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,RG.APPLICATIONBY:DEPT.OFNATURALRESOURCESSHEET5of21DATE:DEC.2015 I—SITEPLANSCALE1”—30’(/I/4\)ILEGEND—*—TOPOFPROPOSEDSHORELINE\EXISTiNGBOARDWALK—OHWL—ORDINARYHIGHWATERSHORELINE‘—OLWL—ORDINARYLOWWATERSHORELINE\DEPARTMENTOFNATURALRESOURCESENGINEEREDLOGJAMAPPROXIMATETOEOFPURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.BIRDISLANDHABITATRESTORATIONDATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCPARTIALSITEPLANI1201LAKEWASHINGTONBLVD.RENTON,WA.98056PROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,APPLICATIONBY:DEPT.OFNATURALRESOURCESSHEET6of21DATE:DEC.2015RG.05EAST (30EXISTINGBOARDWALK12THICKFISHMIX,—25--BEGINPLACINGATI/ELEV.+20.7’OHELEV.21.7’IOLELEV20.0’I—------z:/20-EXISTING—- - - - ‘ - -::z::zGROUND- - - - - -,--— - - -::::::15--APROX.50’10-1020304050607080SHORLINESECTION225201510PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.,IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)SHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONS1&2SEC.5,TWP.23N,RG.05EASTL1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCEST—SHEETBof21DATE:DEC.2015(PROPOSEDTOPOFSHORELINEJu-..EXISTINGTOPOF—.-- --—BANKELEV.24’ccCOIRLOG:LNELEV21.7’_GROUND15- - __ _ _-—10--______—2100102030405060705090SHORLINESECTION1530252015105305—10590 (PROPOSEDTOPSHORELINEPURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)SHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONS3&4SEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET9of21DATE:DEC.2015CSHORLINESECTION330252015105302520—100102030405060708090PROPOSEDTOPOFSHORELINEANCHOREDDRIFT/_LOGSJu-/EXISTINCTOPOF/7_BANK,ELEV.+23.50’//—rEUPILL25-tA12H:1VnP.OHWLELEV.21.7’.:zz.z:Z1jE:;-:::::::OLWLELEV20.0’20-. ,EXISTING15LOGANHORSIn-—100.10203040151059050607060SHORLINESECTION4 PROPOSEDTOPOFSHORELINEEXISflNCTOPOFZ’BANK,ELEV.+24’—100PROPOSEDTOPOFSHORELINEEXISTINGTOPOFZBANK,ELEV.+24’304007080905SHORLINESECTION6PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)SHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONS5&6SEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET10of21DATE:DEC.2015(C30‘‘-zANCHOREDDRIFT/LOGS-IDC-FISHMIXOHELEV.2.—-OLWLELEV20.0., .20-15--LOGANCHORS-In-—30252015105--5—100102030405060708090SHORLINESECTION530/ZANCHOREDDRIFT/_z‘LOGS25-IX——ELJPILE,[12H:1V./.——/OHM.ELEV21.7’-. --- ,..-.L20——;=OLWLELEV2001 5- - -_ - --LOGANCHORS10-————302520151052050 (50102030405060705090PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFflSHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,END.LOCJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)SHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTiONS7&8SEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET11of21DATE:DEC.2015SHORLINESECTION7PROPOSEDTOPOFSHORELINE302520151053025201510Ju-1II1O’-O”_IANCHOREDDRIFTPROJECTSECOPROPERTYI/LOGSBUFFERLINE25-,FISHMIXOHELEV21.7’.L.OLWLELEV20.020- . V COPROPERT15-—LOGANCHORS10-5—10SHORLINESECTION8 C(NOTTOSCALESHORELINEEROSIONPROTECTION,VARIESFISHMIX,ROCKSANDSANO,6”MIN.THICKNESS_zpQ-___——NATiVEMIXEORIPARIANSHRUBS-ANDTREES“VARIES_LVARIESTYPICALSECTION1NOTTOSCALE21.7’OHWLNA11VEMIXEDRIPARIANSHRUBS-ANDTREES-OVERHANGINGVEGETARONRIPARIANSLOPECHANGELOCATIONVARIESEXISTINGTYPICALSECTION2PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)TYPICALSHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONS1&2SEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET12of21DATE:DEC.2015 OVERHANGINGVEGETATIONNATIVEMIXEDRIPARIANSHRUBSANDTREESSHORELINEEROSIONPROTECTiON,VARIESa- . , - , ‘ . . -COMPOSTLAYER,.6”MIN.THICKNESS(COVERHANGINGVEGETATIONNARVEMIXEDRIPARIANSHRUBSANDTREESNEWBOARDWALK,SEEDETAILA’FISHMIX,ROCKSANDSAND,12”MIN.THICKNESSjOHy—zp_o_____—EXISTINGGROUNDTYPICALSECTION3NOTTOSCALESECOPROPERTYLINEIFISHMIX,ROCKSTYPICALSECTION4NOTTOSCALEPURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)TYPICALSHORELINEAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONS3&4SEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET13of21DATE:DEC.2015 CNOTTOSCALE(DRIFTFISHANCHOREDDRIFTLOGNOTTOSCALESTAKEAT10’COIRLOG,12”øEXISTING-GROUNDCOIRLOGPURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)ANCHORANDAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:COIRLOGDETAILSSEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET14of21DATE:DEC.2015 STiNGER///(BELOW),TYP.//DECKBOARD,TYP.PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)TYPICALBOARDWALKAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:PLAN&ELEVATIONSEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET15of21DATE:DEC.2015CCFENCE/TOP///RAIL,TYP.1:iz::;:z:flftr- ----3zzzz:TYPICALBOARDWALKPLANSCALE1/4”=1—0”1/4’tCAPPLATE,SEALWELD,TYP.TYPICALBOARDWALKELEVATIONSCALE1/4”=1—0” C(DETAIL‘A’TYPICALBOARDWALKSECTIONSCALE;1/2”=1—0’4x8DECKBOARD1/4”øDRAINHOLES,1W.3/8”øx3”LAGBOLT,TYP.SIMPSONHL53CENTEREDONSLEEPER.CONNECTWTH(4)1/2”øx4”LAGBOLTS,TYP.-2x8TOPRAIL-2x61/20ECONOMYHEADBOLT,CSKNUT.CENTERIN2x6,LOCATE6”FROMEA.END&APPROX.1/3rdPOINTS,TYP.20SCHED.40STEEL-PIPEFENCEPOSTAT1O’—OO.C.-GALVANIZEDSTEELCHAIN—LINKFENCING.2x6-STEELBASEPLATE8x8STRINGER6COMPOSTLAYER-CRUSHEDBASECOURSEGEOTEXOLEFORSEPARA11ON•-EXISTINGGROUND6x8x6’—O”SLEEPERAT10’MIN.O.C.PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,HABITATRESTORATIONHABITATBYINSTALLINGFlSHMIX,SHADE&COVERFORJUVENILEEND.LOGJAMSANDPLANTINGS.SALMONIDS.,IN:LAKEWASHINGTON!DATUM:0.0’MLLW(LOCKDATUM)BOARDWALKATRENTON,WA.,-KINGCOUNTYADJACENTPROPERTYOWNERS:TYPICALSECTIONSEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET16of21DATE:DEC.2015 w((242016EXPOSEDLOGS,160,12”øx30’liMBER\________________________________________25’LENGTH,TYP.PILE,TYP.—“‘1n-\_EXISTINGGROUND1.NOEXPOSEDLOGSSHALLBEPLACEDBELOW18.7’(3’BELOWOHWL)2.LOGSSHALLBEFASTENEDTOAPILEOROTHERLOGATAMINIMUMOF2PLACES.(ONEPOSSIBLEFASTENINGSYSTEMSHOWN)3.SMALLWOODYDEBRISSHALLBEPLACEDBETWEENANDUNDERLOGSINTHELOGJAM.PROFILEVIEWt1O’MAX.10’MIN.RESTORATIONBUFFERAREAENGINEEREDLOGJAMPLANVIEWPURPOSE:TORESTOREANDBIRDiSLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)ENGINEEREDLOGJAMAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:PLAN&PROFILESEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET17of21DATE:DEC.2015 cIMN.16”DIAMETERLOGThROOTWADPROPOSEDGRADE,-SLOPEaELEVATiONVARIESDRIVEMIN.12—INCHDIAMETERPILESALONGALIGNMENTENGINEEREDLOGJAMSECTIONA-ANOTTOSCALEPURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)ENGINEEREDLOGJAMAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:SECTIONA-ASEC.5,TWP.23N,RG.05EAST1.CITYOFRENTON2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCESSHEET18of21DATE:DEC.2015 QUANTITIESDESCRIP11ONUNITQUANTiTYDEBRISTOBECY321REMOVEDEXCAVATIONCY33BELOW_OHWFISHMIXFILLCY1950BELOW_OHWCSBCFILLCY17ABOVE_OHWTOPSOILCY750ABOVE_OHW((PURPOSE:TORESTOREANDBIRDISLANDPROPOSED:RESTORATIONOFFISHIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILEHABITATRESTORATIONHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.SALMONIDS.IN:LAKEWASHINGTONDATUM:0.0’MLLW(LOCKDATUM)QUANTITIESAT:RENTON,WA.,KINGCOUNTYADJACENTPROPERTYOWNERS:1.CITYOFRENTONSEC.5,TWP.23N,RG.05EAST2.SECODEVEOPEMENT,INC1201LAKEWASHINGTONBLVD.APPLICATIONBY:RENTON,WA.98056DEPT.OFNATURALRESOURCES.SHEET19of21DATE:DEC.2015 LEGEND:ZoneI-LakefringeemergentwetlandZone2-SloughemergentwetlandZone3-ShrubwetlandZone4-UplandshrubandtreeInterplantedconifer(approximatelocation)Note:I.Removeallnon-nativesincludingHimalayanBlackberiy,TansyRagwort,ReedCanaryGrass,andothers.Replacewithnativespecies.Thisshowsschematicofproposeddripirrigationsystem.Thisisnottoscaleandwillbefinalizedin100%designdrawings.ThiswilltieintoexistingcityParkssprinklercontrolsystemandwatermain.VVPURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.DATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCBIRDISLANDHABITATRESTORATIONPARTIALPLANTINGPLANI1201LAKEWASHINGTONBLVD.RENTON,WA.98056PROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,APPLICATIONBY:DEPT.OFNATURALRG.05EASTExistingwetlandareaExistingvegetationPROPOSEDPLANTINGZONES:IILIIIIIII1111111rx(7N2.NV7/N/\PLANTING_PLANSCALE1—30RESOURCESSHEET20of21DATE:DEC.2015 PLANTINGPLANSCALE1”—30’PURPOSE:TORESTOREANDIMPROVESHORELINEWITHFOOD,SHADE&COVERFORJUVENILESALMONIDS.DATUM:0.0’MLLW(LOCKDATUM)ADJACENTPROPERTYOWNERS:1.CITYOFRENTON2.SECODEVEOPEMENT,INCBIRDISLANDHABITATRESTORATIONPARTIALPLANTINGPLAN21201LAKEWASHINGTONBLVD.RENTON,WA.98056PROPOSED:RESTORATIONOFFISHHABITATBYINSTALLINGFISHMIX,ENG.LOGJAMSANDPLANTINGS.IN:LAKEWASHINGTONAT:RENTON,WA.,KINGCOUNTYSEC.5,TWP.23N,RG.05EASTAPPLICATIONBY:DEPT.OFNATURALRESOURCESSHEET21of21DATE:DEC.2015C\NN_z-zzI0LEGEND:///IIINPROPOSEDII1111ll101II1111r—:E1x]ExistingwetlandareaExistingvegetationPLANTINGZONES:ZoneI-LakefringeemergentwetlandZone2-SloughemergentwetlandZone3-ShrubwetlandZone4-UplandshrubandtreeInterplantedconifer(approximatelocation)NNote:I.Removeallnon-nativesincludingHimalayanBlackberry,TansyRagwort,ReedCanaryGrass,andothers.Replacewithnativespecies.2.Thisshowsschematicofproposeddripirrigationsystem.Thisisnottoscaleandwillbefinalizedin100%designdrawings.ThiswilltieintoexistingCityParkssprinklercontrolsystemandwatermain. 4t’‘—,3EC-FINALCritic3L.re&sStidyBirdIslandShorelineEnhancementRenton,WashingtonPreparedforWashingtonDepartmentofNaturalResources.December2,201512132-33h%’FullDocumentAvailableuponRequestHiUa?owsER ADVISORYNOTESTOAPPLICANT.LUA15-000866‘Cityof..iApplicationDate:December16,2015SiteAddress:1201LakeWashingtonBlvdNName:BirdIslandShorelineEnhancementPreapplicationRenton,WA98056-1980PLAN-PlanningReview-LandUseVersion1CommunityServicesReviewComments4LntatLesheBetlach42543066191LBetlr4öjvRecommendations:1.ProjectProposalprovideseducationalopportunitiesandsupportssalmonhabitat.EngineeringReviewCommentsContactVickiGroverI4254307291IvRecommendations:DEPARTMENTOFCOMMUNITYANDECONOMICDEVELOPMENTMEM0RANDUMDATE:January11,2016TO:JillDing,PlannerFROM:VickiGrover,PlanReviewerSUBJECT:UtilityandTransportationCommentsfortheBirdIslandShorelineEnhancementProjectLUA15000866IhavereviewedtheapplicationfortheBirdIslandShorelineEnhancementProject.DNRinpartnershipwiththeCityofRentonParksDepartmentisproposingtoenhanceapproximately525feetofshorelinehabitatandapproximately0.4acresofuplandhabitat.Pleaseseethefollowingcomments:EXISTINGCONDITIONSWaterserviceisnotarequirementofthisproject;possiblytemporaryirrigationservicemaybeneeded;CityofRentonParkshasanirrigationsourceavailablewithintheGeneCoulonPark.Sanitarysewerisnotarequirementofthisproject.Stormwaterdetentionandwaterqualityarenotarequirementofthisproject.RightofWaystreetdedicationandstreetfrontageimprovementsarenotarequirementofthisproject.GeneralComments1.AllconstructionpermitswillrequirecivilplanstoincludeaTESCPlanandaSWPPP.PlansshallconformtotheRentonDraftingStandardsandbepreparedbyalicensedCivilEngineer.2.Whenconstructionplansarereadyforreview,pleasesubmitfour(4)copiesofthedrawings,two(2)copiesoftheDrainageReportandthepermitapplication.3.ProvideinformationaboutShorelineType1,2,3,&4onthe81/2”by11”plans.4.Allwoodusedfortheboardwalkshallbenontreated.5.Ageotechreporttoaddressthetimberpiledesigntobesubmittedatconstructionpermitapplication.6.Useofnoncorrosivewireropeispreferredontheengineeredlogjamdesign.7.Duringconstruction,thecontractorshallpreventalldust,drips,debilsandspillsfromcomingincontactwiththewater’ssurface.Ran:February04,2016Pagelof1