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Home My WebLink AboutCertification of Exemption Cedar River Section 205 Flood Hazard Reduction DecisionDEPARTMENTOFCOMMUNITY___.......—‘0pANDECONOMICDEVELOPMENTPLANNINGDIVISIONCERTIFICATEOFEXEMPTIONFROMSHORELINESUBSTANTIALDEVELOPMENTEVALUATIONFORM&DECISIONDATE:June2$,2017PROJECTNAME:CedarRiverSection205FloodHazardReductionPROJECTNUMBER:LUA17-000422,SMEPROJECTMANAGER:AlexMorganroth,AssociatePlannerOWNER:CityofRenton,1055SGradyWay,Renton,WA98057CONTACT/APPLICANT:JoeFarah,CityofRenton,1055SGradyWay,Renton,WA98057PROJECTLOCATION:CedarRivernearCityofRentonAirportandCedarRiverTrailPark(APN’s0723059007and0723059096)PROJECTDESCRIPTION:TheapplicantisrequestingaShorelineExemptionforthemaintenanceandrepairofthefloodwallsalongtheCedarRiver,aspartoftheCedarRiverSection205FloodHazardReductionProjectincooperationwiththeUnitedStatesArmyCorpofEngineers(USACE).NormalmaintenanceandrepairofexistingstructuresordevelopmentiscategoricallyexemptfromtheshorelinedevelopmentpermitrequirementperWAC173-27-040.TheproposedworkwouldoccurontheRentonMunicipalAirportproperty(APN0723059007),theCedarRiverTrailParkproperty(APN0723059096),andwithintheCedarRiverwaterway(seeExhibit1).Thesealantusedinthefloodwalljointshassignificantlydeterioratedsinceoriginallyconstructedin1999and2000andneedstobereplacedaccordingtoinspectionreportsfromUSACE.Theworkwillcompletedwithhandtools,andnoconstructionequipmentwillbeusedonsite(seeExhibit2).Theapplicanthasnotproposedtheremovalofanytreesin CityofRentonDepartmentofCommunity&EconomicDevelopmentCertificoteofExemptionfromShorelineSubstantialDevelopmentCedarRiverSection205FloodHazardReductionLUAI7-000422,SMEDATEOFPERMIT:June27,2017Page2of3theprojectarea.Minorremovalofvegetationthathasgrownintothejointsmayoccur.TheprojectislocatedwithinReachAoftheCedarRiver,whichhasashorelinedesignationofShorelineHighIntensity.TheproposedworkwilloccuralongthebanksoftheCedarRiver,approximately12to25feetfromtheCedarRiverOHWM.TheapplicantisnotproposingtheremovalofanytreesordisturbingofvegetationalongtheCedarRiverbank.Theapplicanthasnotsubmittedanystudiesduetothelimitedscopeoftheproject.LEGALDESCRIPTION:PORTIONCW#2LOCATEDONWBANKOFCEDARRIVERINE1/2OFSECTION07-23-05&MOREPARTICULARYDESCRIBEDASTRACTS1THRU6ASSHOWNONCITYOFRENTONENGINEERMAPB92-50DATEDMAY23,19571GWBLOCKA&BOFLAKEWASHINGTONSHORELANDS3RDSUPL(Parcel#0723059096)PORSECS7&18-23-5&PORTOBINSDCINCLPORPLATTED&VACSISLYWLYOFCOMMWW#2NOFNLNDIXIEAVE&ELYOFSTATEHWAY#5&ELY&SLYOFFOLGLNBEGONELYMGNSDHWAYATPT5FTSOFNLNOFLOT8BLK18BRYNMAWRTHE89.23FTTHN05-16-SiE438.90FTTHN40-09-47E188.55FlTHN60FTTHN29-00-40W197.07FTTHS88-27-28E90.83FTTHN01-32-32W40FTTH588-27-28E234.53FTTHS35-00-00E142.41FTTHE403.70FTLESSLOTS19TO22INCLBLK4RENTONREALESTATECOS1STADDLESSPORTIONFORLANEHANGARCONDOMINIUM-TGWPOROFRAINIERAVENPERRENTONVACORD#5780(Parcel#0723059007)SEC-TWN-R:SEC7TWN23NR5EWATERBODY/WETLAND:CedarRiver,ReachAAnexemptionfromaShorelineManagementSubstantialDevelopmentPermitisApprovedwithConditions*ontheproposedprojectinaccordancewithRMC4-9-i9OC‘ExemptionfromPermitSystem’andforthefollowingreason(s): CityofRentonDepartmentofCommunity&EconomicDevelopmentCertificateofExemptionfromShorelineSubstantialDevelopmentCedarRiverSection205FloodHazardReductionLUA7-000422,SMEDATEOFPERMIT:June27,2017Page3of3RentonMunicipalCode,Section4.9.190C.3:MaintenanceandRepair:Normalmaintenanceorrepairofexistingstructuresordevelopments,includingdamagebyaccident,fireorelements:a.“Normalmaintenance”includesthoseusualactstopreventadecline,lapse,orcessationfromalawfullyestablishedcondition.b.“Normalrepair”meanstorestoreadevelopmenttoastatecomparabletoitsoriginalcondition,includingbutnotlimitedtoitssize,shape,configuration,locationandexternalappearance,withinareasonableperiodafterdecayorpartialdestruction,exceptwhererepaircausessubstantialadverseeffectstotheshorelineresourceorenvironment.c.Replacementofastructureordevelopmentmaybeauthorizedasrepairwheresuchreplacementisthecommonmethodofrepairforthetypeofstructureordevelopmentandthereplacementstructureordevelopmentiscomparabletotheoriginalstructureordevelopmentincluding,butnotlimitedto,itssize,shape,configuration,locationandexternalappearanceandthereplacementdoesnotcausesubstantialadverseeffectstoshorelineresourcesorenvironmentTheproposeddevelopmentis:ConsistentwiththepoliciesoftheShorelineManagementAct.ConsistentwiththeCityofRentonShorelineMasterProgram.Conditions:NoneSIGNATURE&DATEOFDECISION:____________________/i(2oJennierHenning,PlanningDirectorDateTheadministrativelandusedecisionwillbecomefinalifnotappealedinwritingtogetherwiththerequiredfeeto:HearingExaminer,CityofRenton,1055SouthGradyWay,Renton,WA98057onorbefore5:00pm,onJuly12,2017.AdditionalinformationregardingtheappealprocessmaybeobtainedfromtheRentonCityClerk’soffice,RentonCityHall—7thFloor,(425)430-6510.Attachments:Exhibits1and2cc:Applicant/ContactCityofRentonOfficialFileDepartmentofEcology Vt I - >$V E..-A> •LOGAN AVENUE NORTH -•_t_ : NENTON RUNICIPAL AIRPORT 3- JONT SEA_ANT NE>UIN WORK IS MEUSURCT’ER EACH ANT INCLUTEU VEPAR WORK ON THE FRONT SITE (LANG STE)HACK TITE (RIVER SITE) ANT TOP OF THE WALL CTNSTRUCTON EQUIPMENT SHALL NUT TLTCK SOUTH RRITUE.EONTHACTUH MAY WET TO SUOPEND AURA FOR BRIE>PERIVES NEAR GUAVA HUENU q RRITQE BEEN ROE NO ROWS AN WRPLANE ACROSS THE NRITQE 4 EITY OF RENTUN ANT KENTON MUNICIPAL AIRPORT WILL CTTRTINATE Aim CONTRACTOR TO GET AIRPLHNET HNT EQUIPMENT PARKET ALONUS:TE THE FL000AALL MONET 00 THAT THE REPAIR ATRK CAN TUHE PLACE 4.AA_HEIQHTS OWN HRE HPPRTOIMATE ANT THEY TO NOT INCLUTE THE I PTRSTN RELUA ETISUNU GROUNT.SEE TTHICHL WALL SECTON UN TAT S—2. k Wa LEFT RANK KGHTSS FROM HIRPONT Hi •STU IR+3T TO STA 2S+ST NUMRER OP JOINTS:HR (SEE NOTE 1) HPPRTUIMAW AVERAGE WALL HEIGHT:5.5’ TETRA TECH j11J hE B, LEFT RHAIK SOUTH OP SOUTH ROPINU RWTCE xi j W-5TH 3R+NU UT UTH 55-rUT -_.•.— -“MUMRER OP JOINTS:77 (UFE NOTE 1) •.—J APPROTIMWTE HWRWQE WALL HEIGHT:R.S•i —-!.c’rt 3-—-:LEFT RHA4K NOUTH OP SOUTH REFIllS ShROVE ..- 57 ._•* 0TH 30+20 TO STH 3R+4T 7>,)J’-A NUMRER OP JOINTS:10 (SEE NOTE 1)Y’ HPPRURIMATE AVERAGE WALL KEIGHU:RN (RIVER SEE) -1% 2.5 (LUNT ORE) • •:j’.’i 4 -- RU REV-SON CITY OF ciw OF RENTON O3/2/2UT RENTON LOWER CEDAR R:VER Pg/U To/++O Ro:,s OW FLOOD WA__JOIN SEA_ANT REPAIR 5_1 P_AN ViEW 2 3 EXHIBIT 1 —IZñOPLANNINGDIVISIONRECEIVED06’19i2017ProjectNarrative—AMorganroth—TheCedarRiverleveesandfloodwallsarepartoftheCedarRiverSection205FloodHazardReductionProject(CedarRiver205Project)constructedincooperationwiththeUnitedStatesArmyCorpsofEngineers(USACE)withtheCityasthelocalsponsor.Theleveesarelocatedonthelower1.25milesoftheCedarRiverandextendfromWilliamsAvenueNorthtothemouthoftheCedarRiveratLakeWashington.TheCedarRiver205ProjectprotectsportionsofdowntownRenton,theBoeing737plant,andtheRentonAirportfromthe100-yearflood.TheCityisrequiredtomaintaintheCedarRiver205ProjectpertheprojectcooperationagreementwiththeUSACEthatbothpartiesenteredintopriortoconstruction.ThejointsealantsontheCedarRiverfloodwallshavesignificantlydeterioratedsincetheywereconstructedbetween1999and2000.RecentinspectionreportsbytheUSACEhaveraisedconcernaboutthedeteriorationofthejointsealantsandrequestedthattheCityaddressthisissue.Thejointsealantsproperlyprotectthewaterstopsthatinterlockwithadjacentwallsections.Thewaterstopsinsurethatfloodwaterfromtherivercannotseepthroughthewall.Assuch,replacingthejointsealantsonthefloodwallsiscriticaltopreservethestructuralintegrityofthefloodwallandensurethatitperformsitsfunctionoffloodprotection.Thus,primarily,thisrepairwouldenabletotheCitytoremaincompliantwiththetermsofitsagreementwiththeUSACEwhichobligatestheCitytoperformsuchperiodicmaintenance.MaintenanceisalsoneededtomaintaineligibilitytoreceiveFederalDisasterFundstorepairtheleveesifdamagedinafloodundertheUSACEPL84-99program.Secondarily,propermaintenanceisalsoaprerequisiteforcertifyingtheleveeswithFEMA.OnJuly10,2012USACEsentalettertotheCityindicatingthattheleveecertificationletterwouldexpireonAugust31,2013becausetheywouldnolongerbecertifyingleveesandwouldnotbeprovidingtheNationalFloodInsuranceProgramleveesystemevaluationtoFEMA.TheCedarRivet205ProjectleveesystemcertificationtoFEMAleveestandardsallowsforFEMAaccreditationoftheleveesystemasproviding100-yearleveloffloodprotection.AccreditationenablesthepropertiesprotectedbytheleveesystemtoremainmappedasprotectedareasinsteadofbeingmappedintheFEMA100-yearfloodplain,ensuringthattheprotectedpropertieswouldnotneedtoconformtofloodplaininsuranceanddevelopmentregulations.TetraTech,Inc.wascontractedbytheCityinDecember2015,toprovideallnecessaryengineeringconsultantservicesrequiredtorecertifytheCedarRiver205Projectleveesandfloodwalls.AleveecertificationreportisexpectedtobecompletedandsubmittedtoFEMAinFall2017.ReplacingthejointsealantsisneededsothatTetraTechwouldcertifytoFEMAbasedontheirengineeringcomputationsandjudgementthattheCedarRiverLeveesandFloodwallsprovidea100-yearlevelofprotectionTherefore,ashorelineexemptionpermitisrequestedforthisprojectunderthecategoryof“normalmaintenanceandrepairofexistingstructureordevelopment”.Thefollowingisadditionalinformationabouttheproposedwork:•AnticipatedDatesofwork:July-September2017.Sealantwillneedtobereplacedontopofthewallandboththelandandtheriverside.•Theworkwillconsistofhandtools.Noconstructionequipmentwillbeneeded.EXHIBIT2