HomeMy WebLinkAboutSeattle Pipe Trades marked up TIR—SEATTLEPIPETRADESADDITION595MONSTERRDSWRENTON,WASHINGTONU15005192m3-&rz-’PreparedExclusivelyforSeattlePipeTradesby:NovadyneCivilEngineers(425)753-1869June19,2015NOVAdyneC/v//EngineersI-,a-.’HDOv&-7sc)&fl.LZTTñL.so.2V7-i2;s-Seattle425-753-7869Portland971-295-6441
TABLEOFCONTENTSPROJECTOVERVIEW.1CONDITIONSANDREQUIREMENTSSUMMARY2AnalysisoftheEightCoreRequirements2AnalysisoftheFiveSpecialRequirements3OFF-SITEANALYSIS5UpstreamDrainage5DownstreamDrainageCourse5ANALYSISANDDESIGN6ExistingSiteHydrology6DevelopedSiteHydrology6FlowControl7WaterQuality7FloodPlain75.0CONVEYANCESYSTEMANALYSISANDDESIGN9SPECIALREPORTSANDSTUDIES10OTHERPERMITS11ESCANALYSISANDDESIGN12BONDQUANTITIES,FACILITYSUMMARIES,ANDDECLARATIONOFCOVENANT1310.0OPERATIONSANDMAINTENANCEMANUAL141.0PROJECTOVERVIEWTheSeattlePipeTradesAdditionislocatedattheSeattlePipeTradesfacilityintheCityofRentonWashingtonat595MonsterRDSWandlieswithinSection24,Township23North,Range4East.PleaserefertotheVicinityMapwithinthissectionforadepictionoftheprojectsite.SeattleAreaPipeTradesisproposingtoaddan11,900SFadditiontothecurrent53,400sfBuildingonthesouthsideofthebuildinglocatedat595MonsterRdSWRenton,WA98057Parcel240324-9122CountyofKing,StateofWashington.Thiswillrequirerelocationofsomeutilitiesandexpansionofparkingtothesouthofthe5.53AcreSite.TheneighboringpropertyOwnerhasagreedtoselladditionalareaand/orpossiblygrantconstructionandslopeeasementstoallowadditionalparkingtobedeveloped.AccordingtotheCityofRentonsoilsmaps,theon-sitesoilsconsistofPugetSiltyClayLoam,howevertheGeotechReportindicatesalluvialsoilsintheareaofpavementsowehavemodeledthisasoutwashNB.Thesiteislocatedwithinthe100-yearfloodplainpercurrentadoptedFIRMmapping.Noregulatedwetlandscurrentlyexistonsite.ThesiteisalsolocatedadjacenttoaSeismicHazardAreaaccordingtotheCityofRentonmapping.Theprojectareadrainstothenorththroughanexisting12-inchculverttoexistingstormwaterpondsthatwereconstructedaswiththeoriginalbuildingconstruction.ThesiteiswithintheGreenRiverBasin,alsoapartoftheDuwamish-Greenwatershed.Theparkinglotexpansionareawillincorporatepermeablepavingtoprovidestormwatertreatment,storage,andinfiltration.WWHMwasusedtomodelthepermeablepavementsection.The8-inchbasewillprovidestormwaterstorage,whilethestormwaterinfiltratesintotheunderlyingsoils.Surfacerunofffromthepermeablepavementisnotanticipatedandwillonlyoccurintheeventthattheporousasphaltporesgetcloggedorastormeventthatexceedsthe100yearmodel.Thepermeablepavementsectionhasbeenmodeledtoinfiltratetheentire100-yeardevelopedstormevent.Theparkingareaexpansionwillminimizeimpactstotheexistingfloodplainandwillnotreducetheeffectivestoragevolumewithinthefloodplain.TheonsitestormwaterfacilitieswillbedesignedinaccordancewiththeQ9JcIoLpuntyurfaceWaterDesignManual(KCSWDM)2012LowImpactDevelopmentTechmclGukanceManualforPugetSound,andtheQyofRentonAmendmentstotheKCSWDM.1.02.02.12.23.03.13.24.04.14.24.34.44.56.07.08.09.0IIAiner’JDPD€cZotLtPage1
.-CoreRequirementNo.5:TemporaryErosionandSedimentControl..—.-.-2.0CONDITIONSANDREQUIREMENTSSUMMARY________________________________________________TheprojectissubjecttoFullDrainageReviewasdictatedbytheKCSWDMandtheCityTheintentofthisrequirementistopreventthetransportofsedimentandotherofRentonAmendmentstotheKCSWDM.CoreRequirementsNo.1through8andimpacts,suchasincreasedrunoff,relatedtolanddisturbingactivities.SpecialRequirementsNo.1through5aredescribedbelow:ATemporaiyErosionandSedimentationControl(TESC)Planhasbeen2.1AnalysisoftheEightCoreRequirementspreparedaspartoftheCivilPlanSet.TheTESCPlanwillcontrolthetransport.ofsedimenttodownstreamsurfacewatersandadjacentpropertiesinCoreRequirementNo.I:DischargeattheNaturalLocation.accordancewithalltheapplicablestandardsoftheKCWSWDMandtheCityofRenton.Theintentofthisrequirementisto“preventadverseimpactstodownstreampropertiescausedbydiversionofflowfromoneflowpathtoanother,andtoCoreRequirementNo.6:MaintenanceandOperations.dischargeinamannerthatdoesnotsignificantlyimpactdownhillpropertiesordrainagesystems,”KCWSWDMpages1-19.TheintentistoensurethatthemaintenanceresponsibilityfordrainagefacilitiesisclearlyassignedandthatthesefacilitieswillbeproperlymaintainedandTheexistingsitedrainstonortherlytotheexistingonsitestormwaterfacilitiesandoperatedinperpetuity.isthenconveyedsouthwesterlytoGreenRiver.Theultimatedischargelocationforthesitewillremainunchanged.StormwaterrunoffwillbeinfiltratedwiththeOperationsandMaintenanceinstructionsareincludedinSection70.0.useofpermeablepaving...CoreRequirementNo.7:FinancialGuaranteesandLiability.CoreRequirementNo.2:Off-SiteAnalysis.ThisrequirementisintendedtoensurefinancialguaranteesarepostedtoTheintentofthisrequirementistoidentifyandevaluateoff-sitefloodingandsufficientlycoverthecostofcorrecting,ifnecessary,incompleteorsubstandarderosionproblemsthatmaybecreatedoraggravatedbytheproposedprojectanddrainagefacilityconstructionwork,andtowarrantfortwoyearsthesatisfactorytoensureappropriatemeasuresareprovidedforpreventingcreationorperformanceandmaintenanceofthosenewly-constructeddrainagefacilitiestoaggravationofthoseproblems.beassumedbytheCityofRentonformaintenanceandoperation.ThisprojectisproposingtoinfiltratestormwaterrunoffwiththeuseofpermeableAllapplicableguaranteeswillbeprovidedfortheproject.Thebondquantitiesarepaving.Thiswillresultinlowerpeakflowsfromthesite;therefore,nooff-siteincludedinSection9.0ofthisreport.floodingorerosionproblemswillbecreatedoraggravatedbythisproject.BasedI,—.,ontheseconditions,anoffsiteanalysisisnotrequired.,\CoreRequirementNo.8:WaterQuality.V7jCoreRequirementNo.3:FlowControl.,Theintentofthewaterqualityrequirementis“torequireanefficient,costeffectivelevelofwaterqualitytreatmenttailoredtothesensitivitiesandresourceTheintentistoensuretheminimumlevelofcontrolneededtoprotect\,\Jprotectionneedsofthedownstreamreceivingwatertowhichtheprojectsitedownstreampropertiesandresourcesfromincreasesinpeak,duration,andü/drains.”and“CoreRequirementNo.8requiresthatwaterqualitytreatmentvolumeofrunoffgeneratedbynewdevelopment./çLJJA/facilitiesbeprovidedtoremovepollutantsfromrunoffdischargingfromthe‘‘/‘‘,projectsite.”ThissiteislocatedwithinaPeakRateFlowControlzoneaccordingtotheCityof/‘.jRentonflowcontrolmap.Areductioninpeakflowsisexpectedasaresultofthe7Stormwatertreatmentwillbeprovidedviaasoiltreatmentlayerbeneaththedevelopment.Thisisbecausetheproposedpermeablepavingsystemwillfpermeablepavingsection.Refertosection4.0formoreinformation.infiltrateofallstormwaterrunoffwithinthedevelopmentarea.2.2AnalysisoftheFiveSpecialRequirementsCoreRequirementNo.4:ConveyanceSystem.SpecialRequirementNo.1:OtherAdoptedArea-SpecificRequirements.Theintentofthisrequirementistoensureproperdesignandconstructionofengineeredconveyancesystemelements.-Thefollowingisalistofotherpossibleadoptedarea-specificrequirementsaccordingtotheKCWSWDM:Thereisnodischargetoanyundergroundconveyancesystems.CriticalDrainageAreas—Thisdevelopmentisnotlocatedwithinacriticaldrainagearea.J/Page2Page3\.-*.-,
MasterDrainagePlan—Theareaisnotpartofamasterdrainageplan.BasinPlans—Thisprojectdoesnotfallintoanyspecifiedbasinplan.SalmonConservationPlan—ASalmonConservationPlandoesnotapplytothisdevelopment.LakeManagementPlan—ItdoesnotappearthatthereisaLakeManagementPlanthatimpactstheproposeddevelopment.FloodHazardReductionPlanUpdates—Itdoesnotappearthatthefloodhazardreductionplanadverselyaffectstheproposeddevelopment.SharedFacilityDrainagePlan—Theprojectdoesnotproposetoconnecttoashareddetentionfacilitysystemorcreateasharedfacility.Thisplandoesnotapply.SpecialRequirementNo.2:FloodHazardAreaDelineation.Theproposedsiteislocatedwithinthe700-yearfloodplainofSpringbrookCreek.ThebasefloodelevationidentifiedbyFEMAisapproximately19.0(datuminNGVD29).Basedonareviewofcurrentsurveyinformation,the700-yearfloodplaincorrespondstoelevation22.5(datuminNAVD88).PleaserefertotheincludedFIRMmap.SpecialRequirementNo.3:FloodProtectionFacilities.SpecialRequirementNo.3isnotapplicabletotheproposedsitebecausethesitedoesnotmeeteitheroftheconditionssetforwardinthe2009KCWSWDM:•ContainsorisadjacenttoaClassIor2streamthathasanexistingfloodprotectionfacility(suchasalevee,revetment,orberm).•Proposedtoconstructanewortomodifyanexistingfloodprotectionfacility.Thedesignofthesitewillnotaffectanyexistingfloodprotectionfacilities.SpecialRequirementNo.4:SourceControl.SpecialRequirementNo.4willbemetthroughavarietyofon-sitesourcecontrolBMPs.Thisincludesthegoodhousekeepingpracticesandmaintenance.SpecialRequirementNo.5:OilControl.TheproposedparkingareaisnotclassifiedasahighusesiteasdefinedintheKCSWDM.Thereisnouptreamdrainageontothesite.Drainageoffthehillsidetothesouthdrainstotheexistingseasonalpondthatisoffsite.Wemaintaintherunofffromthishillsidetoit’snaturaldirection.TheexpandedparkingareawillbePermeablePavementandinfiltrate.3.2DownstreamDrainageCourseExistingDrainagefromtheBuildingandparkinglotiscollectedintoasystemof12”stormdrainsandCatchBasinsandconveyedtotheNorthtoaStormFacilitythensouthwesterlytoaRegionalPumpStationwhereitispumpedtotheRiver.Thisprojectisproposingtoinfiltratestormwaterrunofffromtheproposedparkingexpansionareawiththeuseofpermeablepavement.Infiltrationofstormwaterrunoffwillresultinareductionofpeakflowstothedownstreamarea;therefore,nooff-sitefloodingorerosionproblemswillbecreatedoraggravatedbythisproject.Basedontheseconditions,anoffsiteanalysisisnotrequired.3.0OFF-SITEANALYSIS3.1UpstreamDrainage‘-p‘-p‘-p.-.UC.-Page4Page5
Permeablepaving,aLowImpactDevelopment(LID)technique,isproposedtomitigatefortheincreasedstormwaterfromnewimpervioussurfacesconstructedonsite.ThepermeablepavementsectionhasbeenmodeledwithWWHM2012,whichhastheabilitytomodelpermeablepavement.TheinaccordancewiththeKCSWDMguidanceandwillinfiltratethefulldeveloped100-yearpeakstormevent.Thepermeablepavingsectionwasmodeledovertheentirearea.Thepermeablepavinglayerthicknessis0.25feetwithapavementporosityof0.20or20percent.Thechokercoursethicknessis0.17feetandhasanassumed0.20porosity.Thebasecourse(storage)is0.67feetandhasaconservative0.30(744vporosityor30percentvoidswithintheaggregatebasestoragebed.Theso!.JjjZt4layerwasmodeledwitha0.25inch/hourinfiltrationtobeconfirmedbytheGeoEngineers..jPgoqtien.zrThemodeledpermeablepavementbasinwillinfiltrate100percentofstormeventi1FeThPcucJEcrrfaL(L971°S71364T4.4WaterQualityThissiteissubjecttoEnhancedBasicWaterQualitytreatmentsinceitisacommercialproperty.Thesiteisexemptfromprovidingatraditionalwaterqualitytreatmentfacilitysincetheproject’sstormwaterrunoffwillbeinfiltratedintosubsurfacesoils.Thesubsurfacesoilswillactasasoiltreatmentlayer,whichmeetthegroundwaterprotectioncriteriapertheCityofRentonSurfaceWaterDesignManualAmendment.%—1)Thefirst2feetormoreofsoilbeneaththeinfiltrationfacilithasacationexchangecapacitygreaterthan5andanorganiccontent’fgreaterthan\0.5%,AND2)Thesoilmusthaveameasuredinfiltrationrateoflessthanorequalto124&&inchesperhour.Theprojectwillinfiltrate100percentofthestormwaterrunoffintothesubsurfacesoils,whichmeetsthetreatmentcriteria.PleaserefertothecalculationswithinthissectionandincludedsoilreportsinSection6.0forvaluesregardingcationexchange,organiccontent,andinfiltrationrates.4.5FloodPlainReviewoftheKingCountyFloodInsuranceRateMap(Firm)#53033C0976F,foundthatthesiteiswithinthe100-yearfloodZoneAH.Muchofthesiteisbelowthe100-yearfloodelevationcontourof19.0.ThesitewillbegradedtominimizePage74.3FlowControl4.0ANALYSISANDDESIGN4.1ExistingSiteHydrologyTheexistingParkingLotdrainstoexistingCatchBasinsand12”StormDrainsthatconveythewatertothenorthtothefacilityconstructedfortheexistingbuilding.•TherailroadspurandareasouthoftheSitecurrentlydraintothesouthtoaseasonalswaleandpond.4.2DevelopedSiteHydrologyTheexpansioninto(thêareasaswellasexistingpavementwillberegradedtoavoidimpactstothefloodwatervolumesandimperviousareasreplacedwithperilousasphaltpavementtoprovidewaterqualitytreatmentandinfiltrationforgroundwaterrecharge,anLID,LowImpactDevelopmentTechnique.Thewetlandisidentifiedandclassifiedalongwiththe25ftbufferasshownontheplans.Noworktobedonewithinthisbufferorwetland.Page6lit&ftL-1AfY)1k13-1.fThecriteriaareoutlinedasfollows:
COLLINSIXcimpactwithinthefloodplain.Wehavecreatedadditionalfloodwatervolumebyexcavatingintothehillsidetothesouth.Volumesbelowthefloodplain(elev=22.5’):EG=878CFFG=894CFThusthenewgradescreatedadditionalFloodPlainVolume.GENERALNOTES:1.FORGENERALNOTESREFERTOSHEETC4.ORFLOWBYPAASESCNOTES:1.THESOILMOISTUREHOLDINGCAPACITYOFSURFACESTHATATPROJECTCOMPLETIONWiCOVEREDBYIMPERVIOUSSURFACEORINCODRAINAGEFACILITYMUSTBEPROTECTED.THANDNAI1VETOPSOILSHALLBERETAINEDINSTATETOTHEMAXIMUMEXTENTFEASIBLE.TED2.ANYDUFFLAYERORTOPSOILREMOVEDDUFSIZETHEBELOWGRATEINLETDEVICE(81051SHALLBESTOCKPILEDONSITEINADESIGNAFORTHESTORMWATERSTRUCTURETWILLAREANOTADJACENTTOPUBLICRESOURCESTHE8-GDSHALLHAVEABUILT-INHIGH-FLOWAREAS.THEMATERIALSHALLBEREAPPUEDRELIEFSYSTEM(OVERFLOWBYPASS)PORTIONSOFTHESITEWHEREFEASIBLE.REMOVALOFTHEBIRDWITHOUTSPLLIIISTHECOLLECTEDMATERIAL3.THESOILINANYAREATHATHASBEENCOPERFDRMMAINTENANCEINACCORDASEHASHADSOMEORALLOFTHEDUFFLAYEFWITHSTANDARDSPECIFICATION8-Si3115)TOPSOILREMOVEDSHALLBEAMENDEDTOOFMOISTURE—HOLDINGCAPACITY.THEAMENRETRrEVALSYSTEM((‘HP)TAKEPLACEBETWEENMAY1ANDOCTOBERTOPSOILSHALLBEAMINIMUM8INCHESThTOPSOILSHALLHAVEORGANICMA1ERCONAND13PERCENTDRYWEIGHTANDAPHSPROPOSEDLANDSCAPEPLANTS.4.ASILTFENCEMAYBEREQUIREDALONGTHUUUTETHEPARKINGLOT.(ASSHOWN)3WBYPASS((VPv-.UIU-’N]LOREMOVEEXISTINGCONA1DASPHALTINPARKHREOR5TANEAREIRISUSVOFILTE9FABRIC—TREEREMOVAL,1’P.—AREMOVEANDSALVAGEEXISTING-IYDRANTASSEMBLY\ThcOUAVBI&E.J71400SEATTLE.WA*QTONe1o4-U10T202452I00F•20e2452101tWcOUJWO.IAKcCMSEATTLEPIPETRADESEXPANSION595MonsterRd.SW,Ste.100Renton,WA98057-2937cCNST.LTAN1NOVAdyneCivilEngineersSRA1IR425-753-1869PRrS4,d971-295-E441flIa&SHAV1903Ancho,ageSa8AFb,lHndISSUED:MMTI(DATEDES11ONPROJECTMJMO8R0t14065DRAWNBYBSJEDATEMARCH2015SEALEETTITLEINUMBERIESCPLANd.cPage8(ANDCONVEYEDTOASEDIMENTTRAPORPOND.GINOANDACTINGASABARRIERTOFLOWAND.ACETHEFENCEORREMOVEDTHETRAPEXISTINGRAILROADTRACKSITSHALLBEREPLACED.EXHIBITA____
COLLINSmIxc710CO1IDAVW1E1400SEATTLE.WA*4arON98104-1710T208.2452100I°206245.2101WWWOAcOMGENERALNOTES:CBFiLTER,1.FORGENERALNOTESREFERTOSHEETC4.OESCNOTES:/DRAINAGEGRATE-ITHESOILMOISTUREHOLDINGCAPACIT’OFALLNEWPERVIOUSSURFACESTHATATPROJECTCOMPLETIONWILLNOTBECOVEREDBYIMPERVIOUSSURFACEORINCORPORATEDINTOADRAINAGEFACIUWMUSTBEPROTECTED.THEDUFFLAYERANDNATiVETOPSOILSHALLBERETAINEDINANUNDISTURBEDSTATETOTHEMAXIMUMEXTENTFEASIBLE.2.ANYDUFFLAYERORTOPSOILREMOVEDDURINGGRADINGSHALLBESTOCKPILEDONSITEINADESIGNATED,CONTROLLEDAREANOTADJACENTTOPUBUCRESOURCESANDCRITICALAREAS.THEMATERIALSHALLBEREAPPUEDTOOTHERPORTIONSOFTHESITEWHEREFEASIBLE3.THESOILINANYAREATHAIHASBEENCOMPACTEDORTHATHASHADSOMEORALLOFTHEDUFFLAYERORUNDERLYINGTOPSOILREMOVEDSHALLSEAMENDEDTOMITIGATEFORLOSSOFMOISTURE—HOLDINGCAPACITY.ThEAMENDMENTSHALLTAKEPLACEBETWEENMAY1ANDOCTOBER1.REPLACEDTOPSOILSHALLBEAMINIMUM8INCHESTHICK.REPLACEDTOPSOILSHALLHAVEORGANICMATTERCONTENTBETWEEN8AND13PERCENTDRYWEIGHTANDAPHSUITABLEFORTHEPROPOSEDLANDSCAPEPLANTS.4.ASILTFENCEMAYBEREQUIREDALONGTHESOUTHENDOFTHEPARKINGLOT.(ASSHOWN)PORTIONSOFEXISTINGSEWER,WATERANDSTORMWAIERSYSTEMSTOBEREMOVEDCLEARINGp.I,iREMOVEANDSALVAGEEXISTINGHYDRANTASSEMBLYREMOVEEXISTINGCONCRETESTEPSANDRETAININGWALL-SAWCUTEXISTINGASPHALTNOTES/SECEONVIEW1.SIZETEEBELOWGRATEINLETDEVICE(BIOS)FORTHESTORMWATERSTRUCTURETWILLSERViCE.2.THE6100SHALl.HAVEABUILT-INHIGH-FLOWRELIEFSYSTEMOVERFLOWBYPASS)3.THERETRIEVALSYSTEMMUSTALLOWREMOVALOFTHEBIOSWITHOUTSp:LLINGTHECOI.LYCTEOMATERIAL4PERFDRMMAINTENANCEINACCORDANDEWITHSTAZ4DARDSPECIFICATIONB.O1.315)EDGEOFEXISTINGBUILDINGREMOVEEXISTINGCONCRETECURBRETRIEVALSYSTEM(TYP)NREMOVEANDSALVAGEEXISTINGHYDRANTASSEMBLY/ThtESEATTLEPIPETRADESEXPANSION595MonsterRd.SW,Ste.100Renton,WA98057-2937CATCHBASINFILTERDETAILSCALE:NOTTOSCALEJOINTSINFILTERFABRICSBALCBESPLICEDATPOSTSUSESTAPLES.VUABRWGS,OREUIJIV4LENTTOATTACHFABRICTOPOSTSONSLLTANTINOVAdyneCivilEngineersSealle425.753-1869PorOord9T1.295.6441CsIabhShed1903AncVO,agoSeOIIVPortlandLiISPACINGMAYBEINCREASEDTOEIFWIREBACKINGISUSES6MAS/22BY140..WIREOREQUIVALENT,IFSTANCARDSTRENGTHFABRIC0STHFILTERFABRICi.rMINIMJ44’,4’TEENCH’/BAQ6RaTEIRH/NAT1VESOIL4WQUDPOSTS.STEaESREEPOSTS.REBAR.OREQUIVALENT19,472SfISSUED:MA(DATEDESc’flONCONDITIONOFUSETiLTFENCEMAYBEUSEDDOWNSLOPEOFALLDISTURBEDAREAS1.2SILTFENCEISNOTINTENDEDTOTREATCONCENTRATEDFLOWS.NORISINTENDEDTOTREATSUBSTANTIALAMOUNTSOFOVERLANDFLOW.ANYCONCENTRATEDFLOWMOSTBECONVEYEDTHROUGHTHEDRAINAGESYSTEMTOASEDIMENTTRAPORFOND.2.DESIGNANDINSTALLATIONSPECIFICATiONS2.1.THEGEOTEXTILEUSEDMOSTMETTHESTANDARDLISTEDBELLOW.ACOPYOFTHEMANUFACTURERSFABRICSPECIFICATIONSMOSTBEAVAILABLEONSITE._________-1WiW(IESESIZEISRFG1ST.WIFOBSILTFIlM1905IA5TMO4ISIISIIRSI6VESZE)S.RFR.TSERA)FOROTREBFENEGS4/WATFRPFBRMYTWIflI*STMB4SIIIOWSECO.IHNIMUMEXISTINGRAILROADTRACKSEXHIBITAREASEXISTINGI1LB5MNGRABENSILESTSOFCHT(ASIMB4&321Ila,LB5,MNFORflANDRRDSTSENEKTFABRICPROCT‘RMB81FEfflOtl4.065DRAWNBYISSJEDATEMAfICH20158IINftET)22STANDARDSTRENGTHFABRICREOUIRESWIREBACKINGTOINCREASEThESTRENGTHOFTHEFENCE.WIREBACKINGORCLOSERPOSTSPACINGMAYBEREQUIREDFOREXTRASTRENGTHFABRICIFFIELDPERFORMANCEWARRANTSASTRONGERFENCE.2.3.WHERETHEFENCEISINSTALLED.THESLOPESHALLNOTBESTEEPERTHAN2H:1V2.4.IFATYPICALSILTFENCEISUSED,THESTANDARD454TRENCHMAYNOTBEREDUCEDASLONGASTHEBOTrOM8INCHESOFThESILTFENCEISWELLBURIEDANDSECUREINATRENCHTHATSTABILIZESTHEFENCEANDDOESNOTALLOWWATERTOBYPASSORUNDERMINEThESILTFENCESEAL3.MAINTENANCESTANDARDS3.1.ANYDAMAGESHALLBEREPAIRIMMEDIATELY.3.2.IFCONCENTRATEDFLOESAREEVIDENTUPHILLODTHEFENCE.THEYMUSTBEINTERCEPTEDANDCONVEYEDTOASEDIMENTTRAPORPOND.3.3.ITISIMPORTANTTOCHECKTHEUPHILLSIDEOFTHEFENCEFORSIGNSOFTHEFENCECLOGGINGANDACTINGASABARRIERTOFLOWANDTHENGAUSNGCI-IANNELIZATIONOFFLOWSPARALLELTOTHEFENCE.IFTHISOCCURS.REPLACETHEFENCEORREMOVEDTHETRAPSEDIMENT.3.4.SEDIMENTMOSTBEREMOVEDWHENSEDIMENTIS6INCHESHIGH3.5.IFTHEFILTERFABRICIGEOTEXTILEIHASDETERIORATEDDUETOULTRAVIOLETBREAKDOWNITSHALLBEREPLACED.SILTFENCEDETAILSI-EETTITLE/NUMBERTESCPLAN01.0
CUT:1672CUBICYARDS(2257TONS)RELOCATEDFILL:554CUBICYARDS(746TONS)NETSOILREMOVED:1116CUBICYARDS(1509TONS)COLLINSIORIGINOFFILL:RELOCATEDONPROPERTY.xc710COM)AIIS.E3ITE1400AThE,WASI-I40TON96104-1710T2062452100F2062452101L4-—LI)NOTES:AREAOFEXISTINGPROPERTY:5.53AcresAREAOFWORK:0.95AcreTITLESEATTLEPIPETRADESEXPANSION595MonsterRd.SW,Ste.100Renton,WA98057-2937OFSOILSREMOVED:TOBEDETERMINEDBYCONTRACTOROONSLLTAM\\%NovAdyneCivilEngineersS000Io425-753-1869PoOIa,d971-295-6441ConrovdynoC)lbhh641903Anhc,r,ge3.&0Po4IndISSUED:MAWDATEDESCRFflONPROJECTJMBERFEFR0tJ4O65DRAWNBYISSUEDATEMARCH2015SEALfINrEET1nIh29ft.SHEETTITLEINUtOERGRADINGANDDRAINAGEPLAN02.0
..-.-0.-.-3.-3.-4..•0WWHM2012PROJECTREPORTProjectName:SeattlePipeTradesSiteName:SeattlePipeTradesSiteAddress:595SWMonsterRDCity:RentonReportDate:6/11/2015Gage:SeatacDataStart:1948/10/01DataEnd:2009/09/30PrecipScale:1.00Version:2015/06/05LowFlowThresholdforPOC1:50Percentofthe2Year(Conservative)HighFlowThresholdforPOC1:50yearPREDEVELOPEDLANDUSEName:DisturbedAreaBypass:NoGroundWater:NoPerviousLandUseAcresAB,Forest,Steep.22AB,Lawn,Flat.54PerviousTotal0.76ImperviousLandUseAcresPARKINGFLAT0.5ImperviousTotal0.5BasinTotal1.26ElementFlowsTo:SurfaceInterflowGroundwaterMITIGATEDLANDUSEName:Basin1Bypass:YesGroundWater:No
PerviousLandUseAcresAB,Lawn,Flat.28AB,Pasture,Steep.22PerviousTotal0.5ImperviousLandUseAcresImperviousTotal0BasinTotal0.5ElementFlowsTo:SurfaceInterflowGroundwaterName:PermeablePavement1PavementArea:0.5730ft.PavementLength:60.00ft.PavementWidth:416.00ft.Pavementslope1:0.02To1Pavementthickness:0.25PourSpaceofPavement:0.2Materialthicknessofsecondlayer:0.167PourSpaceofmaterialforsecondlayer:0.2Materialthicknessofthirdlayer:0.67PourSpaceofmaterialforthirdlayer:0.3InfiltrationOnInfiltrationrate:0.3Infiltrationsafetyfactor:1TotalVolumeInfiltrated(ac-ft):84.141TotalVolumeThroughRiser(ac-ft):0TotalVolumeThroughFacility(ac-ft):84.141PercentInfiltrated:100TotalPrecipAppliedtoFacility:0TotalEvapFromFacility:5.903ElementFlowsTo:Outlet1Outlet20-A0.06020.5810.0100.0000.1730.07220.5830.0120.0000.1730.08420.5840.0140.0000.1730.09630.5860.0160.0000.1730.10830.5880.0180.0000.1730.12030.5890.0210.0000.1730.13240.5910.0230.0000.1730.14440.5920.0250.0000.1730.15640.5940.0270.0000.1730.16850.5960.0290.0000.1730.18050.5970.0310.0000.1730.19250.5990.0330.0000.1730.20460.6010.0360.0000.1730.21660.6020.0380.0000.1730.22860.6040.0400.0000.1730.24070.6060.0420.0000.1730.25270.6070.0440.0000.1730.26470.6090.0470.0000.1730.27680.6110.0490.0000.1730.28880.6120.0510.0000.1730.30080.6140.0530.0000.1730.31290.6160.0550.0000.1730.32490.6170.0580.0000.1730.33690.6190.0600.0000.1730.34900.6210.0620.0000.1730.36100.6220.0640.0000.1730.37300.6240.0670.0000.1730.38510.6260.0690.0000.1730.39710.6270.0710.0000.1730.40910.6290.0730.0000.1730.42120.6310.0760.0000.1730.43320.6320.0780.0000.1730.44520.6340.0800.0000.1730.45730.6360.0820.0000.1730.46930.6370.0850.0000.1730.48130.6390.0870.0000.1730.49340.6410.0890.0000.1730.50540.6420.0920.0000.1730.51740.6440.0940.0000.1730.52950.6460.0960.0000.1730.54150.6470.0990.0000.1730.55350.6490.1010.0000.1730.56560.6510.1030.0000.1730.57760.6520.1060.0000.1730.58960.6540.1080.0000.1730.60170.6560.1100.0000.1730.61370.6570.1130.0000.1730.62570.6590.1150.0000.1730.63780.6610.1180.0000.1730.64980.6620.1200.0000.1730.66180.6640.1220.0000.1730.67390.6660.1240.0000.1730.68590.6670.1260.0000.1730.69790.6690.1270.0000.1730.71000.6710.1290.0000.1730.72200.6720.1300.0000.1730.73400.6740.1320.0000.173Stage(ft)0.00000.01200.02410.03610.0481PermeablePavementHydraulicTableArea(ac)Voluine(ac-ft)Discharge(cfB)Infilt(cfB)0.5730.0000.0000.0000.5740.0020.0000.1730.5760.0040.0000.1730.5780.0060.0000.1730.5790.0080.0000.173
0.74610.6760.1340.0000.1730.75810.6770.1350.0000.1730.77010.6790.1370.0000.1730.78220.6810.1390.0000.1730.79420.6820.1400.0000.1730.80620.6840.1420.0000.1730.81830.6860.1440.0000.1730.83030.6870.1450.0000.1730.84230.6890.1470.0000.1730.85440.6910.1480.0000.1730.86640.6920.1500.0000.1730.87840.6940.1520.0000.1730.89050.6960.1540.0000.1730.90250.6970.1550.0000.1730.91450.6990.1570.0000.1730.92660.7010.1590.0000.1730.93860.7020.1600.0000.1730.95060.7040.1620.0000.1730.96270.7060.1640.0000.1730.97470.7070.1650.0000.1730.98670.7090.1670.0000.1730.99880.7110.1690.0000.1731.01080.7120.1700.0000.1731.02280.7140.1720.0000.1731.03490.7160.1740.0000.1731.04690.7170.1760.0000.1731.05890.7190.1770.0000.1731.07100.7210.1790.0000.173FlowFrequencyReturnPeriodsforMitigated.ReturnPeriodFlow(cfs)2year0.0021175year0.00802810year0.01683825year0.03838250year0.066604100year0.110759POC#1POC#1ANALYSISRESULTSStreamProtectionDurationPredevelopedLanduseTotalsforPOC#1TotalPerviousArea:0.76TotalImperviousArea:0.5MitigatedLanduseTotalsforPOC#1TotalPerviousArea:0.5TotalImperviousArea:0.573003StreamAnnualYear19491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992ProtectionDurationPeaksforPredevelopedandMitigated.PredevelopedMitigated0.2490.0010.2670.0310.1700.0100.1380.0010.1480.0000.1610.0060.1760.0030.1730.0110.1960.0010.1580.0010.1610.0020.1590.0080.1680.0050.1460.0000.1650.0020.1590.0070.2060.0040.1360.0010.2460.0210.2650.0040.1840.0020.1780.0000.2120.0010.2530.0180.1320.0010.1930.0020.2230.0030.1510.0050.1620.0000.1980.0010.2720.0000.2440.0010.1990.0010.2810.0050.2290.0020.1450.0010.1990.0000.1720.0010.2660.0060.1620.0000.2020.0000.4490.0570.3000.0150.1430.000FlowFrequencyReturnPeriodsforPredeveloped.POC#1ReturnPeriodFlow(cfs)2year0.1931365year0.25050710year0.29193725year0.34833450year0.393382100year0.441115
19931994199519961997199819992000200120022003200420052006200720082009StreamRankedRank12345678910111213141516171819202122232425262728293031323334350.1240.1350.1770.2160.1960.1850.3790.1890.2070.2420.1910.3540.1620.1550.4330.2900.2460.25290.24940.24640.24590.24370.24170.22870.22260.21570.21180.20710.20630.20170.19940.19890.19840.19640.19550.19320.19090.18920.18510.18420.17770.0000.0000.0040.0320.0070.0010.0330.0000.0000.0030.0020.0040.0010.0060.0830.0240.0070.00760.00700.00690.00660.00640.00570.00560.00530.00490.00460.00410.00370.00360.00350.00350.00290.00250.00250.00220.00210.00180.00170.00160.00140.17680.17590.17320.17240.17040.16780.16530.16230.16210.16170.16150.16100.15940.15910.15830.15510.15090.14820.14610.14480.14300.13760.13560.13490.13250.12380.00130.00130.00110.00110.00100.00100.00100.00100.00090.00080.00070.00060.00060.00040.00040.00040.00030.00030.00030.00030.00030.00030.00030.00030.00030.0003PercentagePass/Fail0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass0Pass3637383940414243444546474849505152535455565758596061ProtectionDurationAnnualPeaksforPredevelopedandMitigated.POC#1PredevelopedMitigated0.44860.08300.43340.05680.37860.03320.35430.03190.29990.03070.28990.02390.28090.02070.27150.01810.26690.01510.26580.01140.26490.0096rtStreamProtectionDurationPOC#1TheFacilityPASSEDTheFacilityPASSED.Flow(cf5)0.09660.09960.10260.10560.10860.11160.11460.11760.12060.12360.12650.12950.13250.13550.13850.14150.14450.14750.15050.15350.15650.1595Predev179216101440129411551038943874788718650595553506459436406375349322298275Mit0000000000000000000000
ooPasso0PassooPassooPassooPasso0Passo0Passo0Passo0Passo0Passo0PassooPasso0PassooPasso0Passo0PassooPasso0Passo0PassooPasso0Passo0PassooPassooPasso0Passo0Passo0PassooPassooPasso0PassooPasso0PassooPassooPassooPassooPassooPassooPassooPassooPassooPassooPassooPassooPasso0Passo0Passo0PassooPassooPasso0Passo0Passo0PassooPassooPass00Pass00Pass00PassPerindandImpindChangesNochangeshavebeenmade.0.33340.33640.33940.34240.34540.34840.35140.35440.35740.36040.36340.36640.36940.37240.37540.37840.38140.38440.38747766S55S4333333322200Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass00Pass0.16250.16550.16850.17150.17450.17750.18050.18350.18650.18950.19250.19550.19850.20150.20450.20750.21050.21350.21650.21950.22250.22550.22850.23150.23450.23750.24050.24350.24650.24950.25250.25550.25850.26150.26450.26750.27050.27350.27650.27950.28250.28540.28840.29140.29440.29740.30040.30340.30640.30940.31240.31540.31840.32140.32440.32740.33042532282141981861701581491381321241181101019892847874706763626058544843393633292625232018171717151515141413121111101010999880.3904200Pass0.3934200PassWaterQualityBHPFlowandVolumeforPOC*1On-linefacilityvolume:0acre-feetOn-linefacilitytargetflow:0cfs.Adjustedfor15mint0cfs.Off-linefacilitytargetflow:0cfs.Adjustedfor15mm:0cfs.LIDReportLIDTechniquePercentVolumnInfiltratedTreatedUsedforTotalVolumnVolumnInfiltrationCumulativeWaterQualityPercentCommentTreatment?NeedsThroughVolumnVolumnWaterQualityPermeablePavement1POC99.98TotalVolumeInfiltrated99.980.000%CompliancewithLIDStandard8DurationAnalysisResult=PassedTreatmentFacility(ac-ft)Infiltration(ac-ft)(ac-ft)CreditN76.58N76.580.000.00NoTreat.CreditThisprogramandaccompanyingdocumentationareprovidedas-iswithoutwarrantyofanykind.TheentireriskregardingtheperformanceandresultsofthisprogramisassumedbyEndUser.ClearCreekSolutionsInc.andthegovernmentallicenseeorsublicenseesdisclaimallwarranties,eitherexpressedorimplied,includingbutnotlimitedtoimpliedwarrantiesofprogramandaccompanyingdocumentation.InnoeventshallClearCreekSolutionsInc.beliableforanydamageswhatsoever(includingwithoutlimitationtodamagesforlossofbusinessprofits,lossofbusinessinformation,businessinterruption,andthelike)arisingoutoftheuseof,orinabilitytousethisprogramevenifClear
CreekSolutionsInc.ortheirauthorizedrepresentativeshavebeenadvisedofthepossibilityofsuchpp111damages.SoftwareCopyrightbyClearCreekSolutions,Inc.2005-2015;AllRightsReserved.5.0CONVEYANCESYSTEMANALYSISANDDESIGNi4Stormwaterrunoffgeneratedfromtheparkinglotexpansionareawillbe100percentinfiltratedthroughpermeablepavementsection.Nonewflowtoconveyancesystemsorpipesareapartofthisproposal.ExistingupstreamflowisreroutedaroundthenewbuildingadditionandtheflowtothemovedCB’snowinfiltratesthroughthePAP.Thustheflowinthepipesisreducedbutthesizeremainsthesameastheexisting.iiiPage9
V70•04UtU16.0SPECIALREPORTSANDSTUDIEStfGeotechConsultantsReportJN14436GES-SeattlePipeTrades.DatedDecember9,2014>WetlandsAssessmentbyJ.S.JonesAssociatesDateMarch25,2009andupdatesby:WetlandResources,Inc.DatedSeptember8,2014Page10OTHERPERMITSThefollowingpermitsand/orapprovalsarethoughttoberequiredaspartofthisproject:1‘-/(aQJQ)•ConstructionStormwaterGeneralPermit(DepartmentofEcology)Mayneneededasnodischargefromthesiteduetothepermeablepavement.Citypleaseconfirm.•SEPAEnvironmentalReview•LandSurfaceModification(grading)Permit•DrainagePlanReview•ClearingandGradingPermitrz:;.4dLc€JccPage11
8.0ESCANALYSISANDDESIGN9.0BONDQUANTITIES,FACILITYSUMMARIES,ANDDECLARATIONOFCOVENANTTESCmeasuresareputintoplacetopreventsedimentfromleavingthesite.Thesiteis..i.imTheBondQuantities,FacilitySummariesandDeclarationofCovenantwillbeincludedgenerallyflat.TheproposedTESCplanwillinclude,butnotbelimitedto,thefollowingwhenthecommentsarereceived,theareasandquantitiesaredeterminedandtheguidelinessetinthe2009KCWSWDMinordertocomplywithCoreRequirementNo.5.ConstructionDocumentsaresubmitted.1.ClearingLimits—Clearinglimitsspecifytheboundaryoftheworktobedone./JClearingaredefinedontheTESCplansandwillbeflaggedinthefield.4,kti-r1J2.CoverMeasures—Covermeasuresareinvolved(typically)withthemeanstocontrolerosionofexposedsoilandarespecifiedontheTESCplans.3.PerimeterProtection—Perimeterprotectionkeepssitesedimentfromleavingtheconstructionsite.Thistypeofprotectiontypicallyinvolvesasiltfence.Thesiltfencecfil-_qj(AandclearinglimitsareshownontheTESCplans.4.TrafficAreaStabilization—Trafficareastabilizationisaddressedbyastabilizedconstructionentrance.5.SedimentRetention—Retentionwillbeestablishedbysiltfencesaroundtheperimeterandcatchbasininsertsthatwillcontroloftheon-sitesediment-ladenwater.6.SurfaceWaterCollection—Aninterceptorditchwithcheckdamsisshownintheplansandwillbeimplementedinthefieldifnecessary.7.DewateringControl—Anywaterfromdewateringshallbefilteredorcontainedsosedimentcanfilteroutpriortodischargedownstream.8.DustControl—Dustcontrolwillbeprovidedbysprinkling.9.WetSeasonConstruction—ConstructionwillbeconductedaccordingtotheCityofRentonstandardsduringthewetseason.10.ConstructionWithinSensitiveAreasandBuffers-AnyconstructionwithinthewetlandbufferwillbesubjecttosensitiveareasrestrictionsandiscontainedintheTESCnotes.•111.Maintenance—MaintenancerequirementsaredetailedintheTESCnoteswithintheengineeringplans.12.FinalStabilization—Uponcompletionoftheproject,alldisturbedareaswillbestabilizedandBestManagementPracticesremoved.Page12Page13
10.0OPERATIONSANDMAINTENANCEMANUALThedrainagefacilitiesonthisprojectwillbeprivatefacilitiesownedandmaintainedbytheowner.Maintenanceoftheonsitedrainagefacilitiesarelimitedtomaintainingthepermeablepavementparkinglotandtheadjacentditch,conveyancepipeandpipeinlettrashrack.ExistingPipeandConveyanceSystemsPleaseseethefollowingMaintenancerequirementsNo.6—ConveyancePipesandDitchesandNo.7—DebrisBarriers(i.e.TrashRacks).PermeablePavementTheprimarygoalofporouspavementmaintenanceistopreventthepavementsurfaceand/ortheunderlyinginfiltrationbedfrombeingcloggedwithfinesediments.Tokeepthesystemcleanthroughouttheyearandprolongitslifespan,thepavementsurfaceshouldbevacuumedbiannuallywithacommercialcleaningunit.Allinletstructureswithinordrainingtotheinfiltrationbedsshouldalsobecleanedoutonabiannualbasis.Plantedareasadjacenttoporouspavementshouldbewellmaintainedtopreventsoilwashoutontothepavement.Ifanywashoutdoesoccuritshouldbecleanedoffthepavementimmediatelytopreventfurthercloggingofthepores.Furthermore,ifanybarespotsorerodedareasareobservedwithintheplantedareas,theyshouldbereplantedand/orstabilizedatonce.Plantedareasshouldbeinspectedonasemi-annualbasis.Alltrashandotherlitterthatisobservedduringtheseinspectionsshouldberemoved.Superficialdirtdoesnotnecessarilyclogthepavementvoids.However,dirtthatisgroundinrepeatedlybytirescanleadtoclogging.Therefore,trucksorotherheavyvehiclesshouldbepreventedfromtrackingorspillingdirtontothepavement.Furthermore,allconstructionorhazardousmaterialscarriersshouldbeprohibitedfromenteringaporouspavementlot.WinterMaintenanceWintermaintenanceforaporousparkinglotmaybenecessary,butisusuallylessintensivethanthatrequiredforastandardasphaltlot.Byitsverynature,aporouspavementsystemwithsubsurfaceaggregatebedhassuperiorsnowmeltingcharacteristicsthandoesstandardpavement.Therefore,iceandlightsnowaccumulationaregenerallynotasproblematic.However,snowwillaccumulateduringheavierstorms.Abrasivessuchassandorcindersshouldnotbeappliedonoradjacenttotheporouspavement.Snowplowingisnecessaryforsignificantsnowaccumulation,butshouldbedonecarefully(i.e.bysettingthebladeslightlyhigherthanusual,aboutaninch).Standardroadsaltisacceptableforuseasadeiceronporouspavement,althoughanon-toxic,organicdeicer,appliedeitherasablended,magnesiumchloride-basedliquidproductoraspretreatedrocksalt,isrecommended.Pleaseconsultlocalgovernmentalagencyforanacceptabledeicer.Page14NO.6-CONVEYANCEPIPESANDDITCHESAPPENDIXAMA[NTENANCEREQUIREMENTSFORFLOWCONTROL,CONVEYANCE,ANDWQFACILITIESMaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResultsExpectedWhenComponentMaintenanceisPerformedPipesSediment&debrisAccumulatedsedimentordebristhatexceedsWaterflowsfreelythroughpipes.accumulation20%ofthediameterofthepipe.Vegetation/rootsVegetationlrootsthatreducefreemovementofWaterflowsfreelythroughpipeswaterthroughpipesContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulationsSourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.DamagetoprotectiveProtectivecoatingisdamaged;rustorcorrosionPiperepairedorreplacedcoatingorcorrosionisweakeningthestructuralintegrityofanypartofpipe.DamagedAnydentthatdecreasesthecrosssectionareaofPiperepairedorreplaced.pipebymorethan20%orisdeterminedtohaveweakenedstructuralintegrityofthepipe.DitchesTrashanddebrisTrashanddebrisexceeds1cubicfootper1,000squarefeetofditchandslopesC.-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4Trashanddebrisclearedfromditches.SedimentAccumulatedsedimentthatexceeds20%oftheDitchcleaned/flushedofallsedimentaccumulationdesigndepth.anddebrissothatitmatchesdesignNoxiousweedsAnynoxiousornuisancevegetationwhichmayNoxiousandnuisancevegetationconstituteahazardtoCountypersonnelortheremovedaccordingtoapplicablepublic,regulations.NodangerofnoxiousvegetationwhereCountypersonnelorthepublicmightnormallybe—-ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaintaccordingtoapplicableregulationsSourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.Rockliningoutofplaceormissing(IfApplicable)VegetationVegetationthatreducesfreemovementofwaterWaterflowsfreelythroughditchesthroughditches.ErosiondamagetoAnyerosionobservedonaditchslopeSlopesarenoteroding.slopes-——-Onelayetorlessofrockexistsabovenativesoilarea5squarefeetormore,anyexposednativesoil.IReplacerockstodesignstandards2009SurfaceWaterDesignManualAppendixA192009A-II
CCUUUUUUU-EquipmentandMaterialsTabte9incLudesrecommendationsforequipmentandmateriatscommonlyusedtomaintainpermeabLepavement.SomeoftheequipmentandmateriaLswittbeusedforroutinemaintenanceactivities,whiteotherequipmentandmaterialswiLtbenecessaryforspecializedmaintenance.Table9.PermeablePavementEquipmentandMaterialsList.Weed/vegetationremovalequipment,suchEquipmenttoaddresscloggingofwearingcourse,suchas:as:LIHandheldpressurewasherorpowerwasherwithLIWeedingtoolsrotatingbrushes(notrecommendedforopen-celledLIWeedburneraggregate-filledsystems)..EdgingandtrimmingequipmenttoWalk-behindvacuum(sidewalks)controlgroundcoverandotherLIPurevacuumsweepervegetationfromextendingontoLIShopVac(smallareas)pavementsurfaceLICombinedhigherpressurewashandvacuumsystemEquipmenttoremovesediment,debris,andleaflitter,suchAdditionalequipmentforgrass-filledopen-as:celledgridsystemsLIHighefficiencyregenerativeairorvacuumsweeperLIMowerormulchmower(roadways,parkinglots)LITopdressgrassseedLIPushbroom(canalsobeusedtospreadandcleanLICornostaggregateingravel-filledopen-celledgridandppermeablepaversystems)ReplacementgridsegmentsLIBrushbroom(coursebristledbroom)toremovemossLILeafblowerErosioncontrolequipment(tostabilizeadjacentlandscapedAdditionalequipmentforgravel-filledopen-areasandprotectpavementfromsedimentinputs)*celledgridsystemsLIErosioncontrolmattingLIRakesandshovelsLIRocksLIAggregatetoreplacematerialafterLIMulchvacuumingortoreplenishmaterialinLIhighuseareasPlantsLIReplacementgridsegmentsLandscapingtoolsLIWheelbarrow(fortransportingTarps(toprotectpavementinareaoflandscapingfromreplacementaggregate)clogging,e.g.,mulchstockpiles)AdditionalequipmentforpermeablepaverPipe/structureinspectionandmaintenanceequipmentSystemsLIHandtoolsLIRakesandshovelsLIWrenchormanholeopener(foropeningmanholelids,LIExtrapayersandbeddingmaterialgrates,etc.)LIAggregatetoreplacematerialsbetweenLIFlashlightpayersaftervacuumingLIMirror(forviewingpipeswithoutenteringstructure)LIWheelbarrow(fortransportingLIGardenhosereplacementaggregate)-
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___LIPlumbingsnakeSnowremovalequipment,suchas:LIMeasuringtapeorrulerLIPlowwithskidstopreventdamagetopermeablepavementLISnowblowerI*ItemsnotrequiredforroutinemaintenanceJuly2013GuidanceDocument—W.WashingtonLowImpactDevelopment(LID)OperationandMaintenance(O&M)HERRERA53-r
KINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALKINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALTECHNICALINFORMATIONREPORT(TIR)WORKSHEETTECHNICALINFORMATIONREPORT(TIR)WORKSHEETPart2PROJECTLOCATIONANDDESCRIPTIONProjectNameSeattlePipeTradesAdditionDDESPermit#_____________________LocationTownship24NRange3ESection24SiteAddress595_MonsterRDSW#100Renton,WA—4--4--4—4—9—4--4--40—4--4—4VPartIPROJECTOWNERANDPROJECTENGINEERProjectOwnerSeattlePipeTradesPhone425-277-6680Address595MonsterRDSW#100Renton,WA98057ProjectEngineerDonaldScarberry,PECompanyNovadyneCivilEngineersPhone4257531869Part7MONITORINGREQUIREMENTSPart3TYPEOFPERMITAPPLICATIONC]LanduseServicesSubdivisonIShortSubd.IUPDUBuildingServicesWEICommericalISFRClearingandGradingC]Right-of-WayUseUOtherPart4OTHERREVIEWSANDPERMITSUDFWHPAUShorelineCOE404ManagementUDOEDamSafetyUStructuralRockeryNaulU_____UFEMAFloodplainriESASection7UCOEWetlandsUOther______Part5PLANANDREPORTINFORMATION•.Describe:MonitonngRequired:YesIoStartDate:CompletionDate:Pert8SITECOMMUNITYANDDRAINAGEBASINCommunityPlan:GreenRiverValleySpecialDistrictOverlays:DrainageBasin:BlackRiverStormwaterRequirements:EnhancedBasicWQ/PeakRateFlowControlPart9ONSITEANDADJACENTSENSITIVEAREASURiver/StreamXISteepSlopeULakeXIErosionHazardWetlandsULandslideHazardUClosedDepressionUCoalMineHazardFloodplainZoneHUSeismicHazardUOtherUHabitatProtectionU_______________Part10SOILSSoilTypeSlopesErosionPotentialPu/Wo2-10%SlightUHighGroundwaterTable(within5feet)USoleSourceAquiferUOtherUSeeps/SpringsUAdditionalSheetsAttachedTechnIcalInformatIonReport—SIteImprovementPlan(Engr.Plans)TypeofDrainageReviewcFiTargetedIType(circleone):(j)iModifiedI(circle):LargeSiteSmallSiteDate(includerevisionDate(includerevisiondates):dates):DateofFinal:—DateofFinal:Part6ADJUSTMENTAPPROVALSType(circleone):StandardIComplex/PreapplicationIExperimentalIBlanketDescription:(includeconditionsinTIRSection2)DateofApproval:2009SurfaceWaterDesignManual11/9/20092009SurfaceWaterDesignManual21/9/2009
KINGCOUNTY,WASHiNGTON,SURFACEWATERDESIGNMANUAL&ii’tiUUUINIY,WASHIN(JTON,SURFACEWATERDESIGNMANUALTECHNICALINFORMATIONREPORTfuR)WORKSHEETTECHNICALINFORMATIONREPORT(TIR)WORKSHEETPartIIDRAINAGEDESIGNLIMITATIONSREFERENCELIMITATIONISITECONSTRAINTUCore2—OffsiteAnalysisCISensitive/CriticalAreasCISEPACIOtherCICIAdditionalSheetsAttachedPart12TIRSUMMARYSHEET(provideoneTJRSummarySheetperThresholdDischargeArea)ThresholdDIschargeArea:(nameordescription)CoreRequirements(all6apply)DischargeatNaturalLocationNumberofNaturalDischargeLocations:1OffsiteAnalysisLevel:CD/2/3dated:__________________FlowControlLevel:II2/3orExemptionNumberPAP(md.facilitysummarysheet)SmallSiteBMPsConveyanceSystemSpillcontainmentlocatedat:ErosionandSedimentControlESCSiteSupervisor:TBDContactPhone:AfterHoursPhone:MaintenanceandOperationResponsibility:EêIPublicIfPrivate,MaintenanceLogRequired:YesI(fT&jFinancialGuaranteesandProvided:Yes/NLiabitityWaterQualityType:Sens.Lake/EnhancedBasicm/Bog(indudefacilitysummarysheet)orExemptionNo.LandscapeManagementPlan:YesIcW6)SpecIalRequIrements(asapplicable)AreaSpecificDrainageType:CDAISDO/MDPIBP/LMP/SharedFac.RequirementsName:Floodplain/FloodwayDelineationType:Major/cMiñ)IExemption/None100-yearBaseFloodElevation(orrange):Datum:$8NAVDFloodProtectionFacilitiesDescribe:fFELifiabovefloodlevel.SourceControlDescribelanduse:Trainingfacility,School,Unionfcomm./indusffiallanduse)Descnbeanystructuralcontrols:OilControlHigh-useSite:YesKNp)TreatmentEMP:MaintenanceAgreement:Yes()withwhom?OtherDra
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___Describe:PermeableAsphaltPavementPart13EROSIONANDSEDIMENTCONTROLREQUIREMENTSMINIMUMESCREQUIREMENTSMINIMUMESCREQUIREMENTSDURINGCONSTRUCTIONAFTERCONSTRUCTIONClearingLimitsStabilizeExposedSurfacesCoverMeasuresRemoveandRestoreTemporaryESCFacilitiesPerimeterProtectionCleanandRemoveAllSiltandDebris,EnsureTrafficAreaStabilizationOperationofPermanentFacilitiesSedimentRetentionFlagLimitsofSAOandopenspaceUpreservationareasSurfaceWaterCollectionOtherUDewateringControlDustControlUFlowControlPart14STORMWATERFACILITYDESCRIPTIONS(Note:IndudeFacilitySummaryandSketch)FlowControlType/DescriptionWaterQualityTypelDescnptionUDetentionUBiofiltrationInfiltrationPermeableUWetpoolPavingURegionalFacilityUMediaFiltrationUSharedFacilityUOilControlFlowControlPermeableUSpillControlBMPsPavingUFlowControlEMPsUOtherOtherTreatmentlayerinpavingsedtioi2009SurfaceWaterDesignManual31/9/20092009SurfaceWaterDesignManual41/9/2009j-
—‘LSp£-I.,OuIiEftLWALbKUli.SIUNMANUALTECHNICALINFORMATIONREPORT(TIR)WORKSHEETPart15EASEMENTStRACTSPart16STRUCTURALANALYSISUDrainageEasementUCastinPlaceVaultUCovenantURetainingWallUNativeGrowthProtectionCovenantURockery>4’HighUTractUStructuralonSteepSlopeUOtherUOtherPart17SIGNATUREOFPROFESSIONALENGINEERI,oracivilengineerundermysupervision,havevisitedthesite.ActualsiteconditionsasobservedwereincorporatedintothisworksheetandtheattachedTechnicalInformationReport.Tothebestofmyknowledgetheinformationprovidedhereisaccurate.06/19/2015Signed/DateSITEVICINITYMAPNT.S.diI42009SurfaceWaterDesignManual51/9/2009
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