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Home My WebLink AboutTIR-3863STORMWATERTECHNICALINFORMATIONRentonAerospaceTrainingCenterRenton,WashingtonRECEIVEDNOV202015CIWOFRENTONPLANNINGDIVISIONI4zeNovember17,2015!MAGNUSSONKLEMFNCICASSOCIATES4It,‘S. 4 STORMWATERTECHNICALINFORMATIONRentonAerospaceTrainingCenterRenton,WashingtonOctober27,2015MACNUSSONKLIMENCICASSOCIATESl30FilthAvenue,Suite3200SeattleWashington98101-2699T:2062921200F:2062921201LZEZzL:ZZZ, ——aa————aa————aaa—— MAGNUSSONKLEMENCICAcr”SECTION1:PROJECTOVERVIEW__ __ ___ __ __ __ __ ___ __ __ __ ___1IntroductionExistingConditionsProposedConditionSoilsSECTIONII:CONDITIONSANDREGIHREMENJ&SUMMARY- __ ___ _3SiteConditions/Threshold5SECTIONIlLOFFrSITEANALYSIS-5SECTIONIV:FLOWCONTROLANDWATERQUALITYFACILITYANALYSISANDDESIGN- __ _6FlowControlWaterQualityTreatmentSECTIONV:CONVEYANCESThTEMANALYSIS.ANDDLMGN_-6SECTIONVI:SPECIALREPORTSANDSTUDIES1SECTIONVII:OTHERPERMITS1SECTIONVIII:CONSTRUCTIONSTORMWATERPOLLUTIONPREVENTIONPLANANALYSISANDDESIGN8PortA—TESCPlonAnalysisandDesignPortB—ConceptualSWPPSPlonSECTIONIX:BONDQUANTITIESWORKSHEET,FACILITYSUMMARIES,ANDDECLARATION.QFCOVENANT_ ___ _ _9SECTIONXiOPERATIONSANDMAINTENANCEMANUAL___ _10REFERENCES———___ __10StormwaterTechnicalInformationTableofContentsRentonAerospaceTrainingCenter,Renton,Washington ———————aaaa—aaaaaa MAGNUSSONKLFMENCICISECTIONI:PROiErTOVERVIEWINTRODUCTIONThisreportdocumentsthestormwateranddrainagedesignapproachandproposalfortheRentonAerospaceTrainingCenter(RATC)projectlocatedintheCityofRenton,Washington.InaccordancewithCitypermitreviewrequirements,thisreportdocumentstheprojectusingtheCityAmendmentstotheKingCountySurfaceWaterDesignManual(KCSWDM)requirementsforaStormwaterTechnicalInformationReport(TIR).Figure1-1consistsofthestandardKingCountyTIRworksheet,whichhasbeencompletedfortheproject.TheRATCislocatedat300RainierAvenueNorth,atthesouthwestcorneroftheRentonMunicipalAirportwhereNorthwestThirdPlaceintersectsRainierAvenueNorth(Figure1-2).Theprojectislongandnarrow,borderedatthewestbyRainierAvenueNorth,attheeastbyWestPerimeterRoad(aprivateroadownedbytheRentonMunicipalAirport),andatthenorthandsouthbyundevelopedlands.TheproposedRATCprojectisa23,000-square-foot(roughly12,760-square-footfootprint),three-storyfacilitythatwillprovidetrainingandjobsimulationsforawarkforceenteringtheregion’saerospacemanufacturingindustry.Theprojectincludesthefollowingtasks:•Removaloftheexistingbuilding.•Constructionofanewbuilding,whichincludesalobby,administrativearea,shopspace,designandfabricationspace,classrooms,andabuildingservicescore.•Shoringalongthenorth,south,andwestsidesofthenewbuilding’slowerfloor.•Partialremovaloftheexistingasphaltparkinglot.•ConstructionofanewADAaccessiblepavedentryroute.EXISTINGCONDITIONSThesiteislocatedeastofRainierAvenueNorth,whichfunctionsasoninterceptorswaleforupstreamflows.Asaresult,therearenooff-siteflowsdirectedtothesite.Thewesterlyportionofthesiteisrelativelyflatandincludesanexistingbuilding,pavedwalksandparkinglot,andlandscapedareasurroundingthebuilding.Theeasterlyportionofthesiteincludesasteepslopethatisapproximately30feethighandconnectstheelevatedwesterlyportionofthesitetoWestPerimeterRoad.Thesteepslopewasnotanaturalconditionbutwasconstructedbyplacingfillonthewesterlyportionofthesiteduringconstructionoftheexistingsitedevelopment.Theexistingsiteincludesapproximately0.6acresofimperviousarea.SeeFigurel-Saforexistingsitebasinconditions.Stormwaterrunofffromthewesterlyportionofthesitepredominantlydrainstothesouth,whereitentersacatchbasinthatdrainstoalargepublicstormdraininWestPerimeterRoad.StormwaterrunofffromthebuildingisconveyedviaatightlinedstormdraintoacatchbasininWestPerimeterRoadthatconnectstotheprivatestormdrainsystemattheadjacentRentonMunicipalAirport,whichalsoStormwaterTechnicalInformationIRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICASSOCIATES•GroundSurfaceTypeIExistingSite(acres)ProposedSite(acres)ISOILS*Basedonsquarefootage,combinedareanumberroundsto0.616acres.IAccordingtotheCitySoilSurveyMap(Figurel-4a),thesoiisatthesiteappeartoUrbanLand(Ur).TheexistingsailconditionsweredescribedintheGeotechnicalEnvironmentalEngineers,nc:bepredominantlyreportbySoil&IIIngeneral,thesubsoilsincludeloosefillovercompetentnativesoils.Basedonthevisualclassificationandtheblowcountdata,webelievethatthefillwasplacedrandomlyandwithoutcompaction.TheInativesoilsbelowthefillincludealluvialsoilsoverglaciallydepositedmaterials.IStormwaerTechnicalInformationPRentonAerospaceTrainingCenter,Renton,WashingtonconnectstothepublicstormdraininWestPerimeterRoad.ThepublicstormdrainpipeouffallsinLakeWashington,approximatelyonemiledownstreamfromthesite.Therearenonaturaldrainagesystemsordischargepointswithintheprojectarea.PROPOSEDCONDITIONTheprojectproposestokeepmostoftheexistingparkinglotandtoconstructanewthree-storybuilding,builtintotheslope,alongwithminorasphaltremovalandlimitedsiteregradingaroundtheADAaccessibleentrvay.Drainagepatternswillremainsimilartotheexistingconditions.Therevisedparkinglotwillcontinuetodraintowardtheexistingcatchbasinlocatedtothesouth.Similarly,theproposedbuildingwillalsoconnecttotheexistingprivatedrainagesysteminPerimeterRoad.Inbothcases,theexistingstormdrainlineswillremaininplace,andtheproposeddrainageconveyanceswilldraintothepublicstormdraininWestPerimeterRoad.SeeFigurel-3bfarproposedsitebasinconditions.Nonewouffallswillbecreatedforthisproject;allrunoffwillbecollectedanddischargedviaoneofthetwosystemsdescribedabove.Asaresultofthisproject,approximately3,630squarefeetofnewand/orreplacedpollution-generatingimpervioussurface(PGIS)willbeconstructed(FigureI-Sc).Thedistributionofexistingandproposedimperviousandpervioussurfacesis(willbe)asfollows:TableI-i:SurfaceTypeDistributionwithintheRentonAerospaceTrainingCenterProjectLimitsIIIIIIIIIImperviousSurface(Building/Hardscape)0.1730.446PerviousSurface(Landscaping/TillPasture)0.4440.170Total0.616*0.616I MACNUSSONKLEMENCICASSCClAltSConsideringtheblackberryandgrassesgroundcoveroftheexistingperviouslandscapedareasandtheglacialtillbelowthefilllayer,theperviousareashavebeenmodeledas“tillpasture”forbothexistingandproposedconditions.LISTOFFIGURESFigureI-i:TIRWorksheetFigure1-2:SiteLocationMapFigurel-3o:ExistingSiteBasinMapFigureI-3b:ProposedSiteBasinMapFigureI-3c:NewPlusReplacedPollutionGeneratingImperviousSurfaceMapFigurel-4a:SoilSurveyMapFigurel-4b:SoilBoringLocationsMapSECTIONII:CONDITIONSANDREQUIREMENTSSUMMARYSITECONDITIONS/THRESHOLDSThisprojectisconsideredaredevelopmentproject.AsidentifiedinSectionI,thetotalprojectareaencompasses0.616acres.Thetotalprojectareaincludesbothon-siteandoff-site(farutilityconnections/relocations)areas.AlsoasidentifiedinSectionI,thetotalnewandreplacedPGISis—3,630squarefeet,whichislessthanthe5,000squarefeetthreshold.TableI-isummarizestheCoreandSpecialRequirementsusedindevelopingthesitestormwatermanagementdesign.TableIl-i:SummaryolSurfaceWaterDesionCriteriaAppliedtotheRentonAerospaceTrainCenterProjectRequirement/DesignElementCommentCoreRequirement(CR)#1:Theprojectwillre-useexistingdischargepaint(s),connectingtoDischargeattheNaturalexistingdownstreamconveyancesystems.NanaturaldischargeLocationareasareavailableforthissite.Althoughasteepslopeislocatedonthesite,starmwaterrunoffwillbedirectedawayfromtheslope,preventingasignificantadverseimpacttotheslope.Althoughthesiteisattheedgeofthe“TenYearCaptureZone”ontheCityGroundwaterMap(FigurelI-ia),theexistingsitehasimpervioussurfaceandasteepslopethatpredominantlyinterceptssurfaceflowsanddirectstheflowstothepublicstormdroinsystem.CR#2:Off-SiteAnalysisAnoff-siteLevel1AnalysisisprovidedintheTIR.StormwaterTechnicalInformationRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICASSOCIATES•Requirement/DesignElementCommentCR#3:FlowControlThePeakRateFlawControlStandardisrequiredfarthisproject(FigureIl-ib).Newflowcontrolfacilitiesarenotrequiredfortheprojectbecausethedevelopmentwillnotgenerateanincreaseofmorethan0.10cfsof100-yearpeakflowwhencomparedwithexistingconditions.Therefore,Exception1appliestotheproject.CR#4:ConveyanceAlthoughtheCitystandardistoconveythe25-yearstormwaterSystemrunoffwhilemaintaining6inchesoffreeboardinstructures,newstormdrainpipeshavebeendesignedwithcapacitytoconveythe100-yearstormwaterrunoffwhileHowinglessthanfull.Therearenonewcatchbasinsexceptforatie-inpointforthefoundationdrainagesystem.Roofdownspoutsoretightlinedtotheconnectionpointatanexistingcatchbasin.CR#5:TemporaryErosionTheprojectcomplieswithCityminimumrequirements.andSedimentControlConstruction-phasesourceandspillcontrolswillbeaddressedintheContractor’sStormwaterPollutionPreventionPlan(SWPPP)thatisrequiredtobecompletedpriortothebeginningofconstruction,asaconditionoftheWashingtonStateDepartmentofEcologyStormwaterManagementManualforWesternWashington,VolumeII,ConstructionStormwaterPollutionPrevention,PublicationNo.12-10-030,dotedAugust2012,andtheConstructionStormwaterGeneralPermit(effectiveDoteJanuary1,2011).CR#6:MaintenanceandGuidanceandchecklistsformaintenanceofconveyanceOperationscomponentsareprovidedintheTIR.CR#7:FinancialTheProjectOwnerwillprovidethenecessarybondsandliabilityGuaranteesandLiabilityinsurance.ICR#8:WaterQualityTheprojectincludeslessthan5,000squarefeetofnewplusreplacedpollutiongeneratingimpervioussurface(P015)andlessthan35,000squarefeetofnewpollutiongeneratingpervioussurface(POPS)-Therefore,SurfaceAreaExemptionIappliestothisproject.SpecialRequirement(SR)Thereareno“OtherAdoptedArea-SpecificRequirements”#1:OtherAdoptedArea-relatedtothissite.SpecificRequirements—IIStormwaterTechnicalInformationRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMFNCICASSOcIAIESSRequirement/DesignElementCommentSR#2:FloodHazardAreaSpecialRequirement#2,“FloodHazardAreaDelineation,”isDelineationsidentifiedasapplicabletotheproject.TheonlyreasonthisspecialrequirementappliestotheprojectisbecausethesiteisodjacenttoafloodhazardareabasedonoCitymap(FigureII-1c).However,itisquestionableifthisspecialrequirementshouldapplytotheproject;basedonFEMAmops,thesiteismarethan1,400feetfromthefloodplainand/orfloodway.SR#3:FloodProtectionTherearenofloodprotectionfacilitiesrelatedtothissiteorFacilitiesdownstreamofthissite.SR#4:SourceControlStructuralsourcecontrolsarenotapplicabletothissite.Potentialsourcecontrolswillbenon-structuralrelatedtointermittentactivitiesonthesite(seeattachedemailfromCityofRentonregardingapplicabilityofthisrequirement).SR#5:GilControlThissiteisnato“high-usesite”andthereforeoilcontrolisnotapplicabletothissite.SR#6:AquiferProtectionAlthoughthesiteisattheedgeoftheTen-YearCaptureZoneArea(FigureIl-Ia),thesiteisnotinanAquiferProtectionZone.Thereforethisspecialrequirementdoesnotapplytothisproject.LISTOFFIGURESFigureIl-la:GroundwaterMapFigure11-1b:FlawControlApplicationMopFigureIl-ic:FloodHazardMapSECTION I II:OF F -S I T E ANALYS I S _____ _ _ _______ _ _ ________ ____ __ThisreportincludesaLevel1Analysisfaroff-sitesystems.BasinflowsupstreamofthesiteareinterceptedbyRainierAvenueandaredirectedtoa36-inch-diameterpublicstormdraininWestPerimeterRoadthatouHallsinLakeWashingtonwithasubmergedoutletapproximatelyanemiledownstreamofthesite.Therearetwapaintsofconnectionforsitedrainageandbothultimatelyconnecttothatsamepublicstormdrainwithin1/4miledownstreamofthesite.Runofffromtheuppertier(westerlyside)ofthesitedrainstothesouthendoftheexistingparkinglotandiscollectedinacatchbasinthatconnectstothepublicstormsysteminRainierAvenue.RunafffromthebuildingandeasterlyportionafthesiteisconveyedtoacatchbasininWestPerimeterRoadthatispartafaprivatesystemownedbytheRentonMunicipalAirport.Thatprivatesystemdrainstoalargedetentianfocilityandthenconnectstothepublicstormdrainin\‘VestPerimeterRoadatthedetentionfacility,approximately880feet(0.161miles)downstreamofthesite.StormwaterTechnicalInfarmatianRentonAerospaceTrainingCenter,Renton,Woshingtan MAGNUSSONKLEMFNCICFigure111-1a:Figure111-1b:FigureIll-ic:Off-SiteAnalysisMapDownstreamSystemMapWestPerimeterRoadBasinMapIISECTIONIV:FLOWCONTROLANDWATERQUALITYFACILITYANALYSISANDDESIGN-___________________FLOWCONTROLThesiteislacatedinaPeakRateFlowCantrolStandardArea.Asaresult,therearenoflowdurationorfloodprotectianrequirementsfarthesite,AccordingtoException1underParagraph1.2.A,“PeakRateFlowControlStandardAreas,”oftheCityAmendmentstotheKCSWDM,thefacilityrequirementiswaivedfortheprojectiftheproposed(tobedevelopedorredeveloped)area(s)generatenomorethana0.100cfsincreasefromtheexistingsiteconditionsforthe100-yearpeakflow.TheexistingandproposedsitesweremodeledusingtheKingCountyRunoffT(FiguresIV-1aandIV-ib).Pen’ioussurfacesweremodeledasTillPastureasonsomeminorreductionsintheexistingparkinglotarea,thenetincreasein0.096whichisjustunderthethreshold.Asaresult,flowcontrolfacilitiesoreproject.imeSeries(KCRTS)modelnotedpreviously.Based100-yearpeakflowisnotrequiredfortheIIWATERQUALITYTREATMENTTherewillbeapproximately3,630squarefeetofnewplusreplacedPGISasaresultofthisproject(Figurel-3c).BasedontheSurfaceAreaExemption(Exemption1)ofCoreRequirement#8,waterqualitytreatmentfacilitieswillnotberequiredfortheproject.LISTOFFIGURESIIFigureIV-la:FigureIV-1b:KCRTSBasinInformationKCRTSPeakFlowsISECTIONV’CONVEYANCESYSTEMANALYSISANDDESIGNTheproposedstormdrainsystemsfortheprojectpredominantlyreplicatetheexistingstormdrainagesystems.TheroofdraindownspoutswillbetiedintoanexistingcatchbasininWestPerimeterRoadwhilesurfacerunofffromthegroundwillpredominantlysheetflowtoexistingcatchbasinsintheparkinglotandWestPerimeterRoad(Figurea-i).Roofdownspoutswillbelocatedattwolowspotsantheroof.Thetightlinedstormdrainpipethatconnectstothenortheast(NE)downspautislocatedalongtheeasterlywallofthebuilding.TheStormwoterTechnicalInformation- - -RentonAerospaceTrainingCenter,Renton,WashingtonItappearsthe36-inchpublicstormdrainconveysdrainagefromanupstreambasinthatincludesapproximately160acrespriortothesiteconnectionpoints(basinareaupstreamoftheWestPerimeterRoodconnectionatthesite).LISTOFFIGURESIIIIIIIIIII MAGNUSSONKLEMFNCICASSDC[AtStightlinedstormdrainpipethatconnectstothesouthwest(SW)downspoutislocatedalongthesoutherlywallofthebuilding.TheSWpipe,whichwillberoutedovertheexistingsteepslope,willbeconstructedofheot-fusedhighdensitypolyethylene(HDPE)pipeandwillbeonchoredto/ontheslope(FiguresV-IandV-2).Themaindeviationfromtheexistingstormdrainsystemiswhereasoldierpileretoiningwallwillbeconstructedatthebaseofthesteepslope.Stormwaterrunofffromasmallarea(0.062acres)ofslopeabovethewallwillbecapturedinanareadrainandconveyedtoagraveltrenchadjacenttoWestPerimeterRood.Fromthere,itwillsurfaceflowoverflowtotheexistingcatchbasininWestPerimeterRoadmatchingtheexistingconditions.Rationalflowandconveyancecalculationswereperformedforthethreenewstormdrainsegments,RoofNEPipe,RoofSWPipe,andAreaDrainPipe(FigureV-3).AlthoughtheCitystandardistoconveythe25.yearstormwaterrunoffwhilemaintaining6inchesoffreeboardinstructures,thesenewstormdrainpipeshavebeendesignedwithcapacitytoconveythe100-yearstormwaterrunoffwhileflowinglessthanfull.Becausetherearenonewstormdrainageconveyancecatchbasinsand/ormanholes,abackwatercalculationwasnotneedednorperformedforthesesystems.Theonlystormdrainconveyancestructure,theareadrain,outletstoanuncontainedcondition,sotherearenotailwaterimpacts.Theconveyancecalculations(FigureV-3)identifythepipeshaveadequatecapacityandthatflowvelocitiesexceed3feetpersecond.LISTOFFIGURESFigureV-i:ConveyanceMapFigureV-2:Ground-AnchoredPipeSectionsandDetailsFigureV-3:RationalPeakFlowRateandConveyanceCalculationsSECTIONV1zSPECIALREPORTSANDSTUDIES- __ __ __ __ _Toourknowledge,thereorenospecialreportsorstudiesthathavebeenpreparedforthesite.SECTIO.NVIFOTHERPERMITSTherearenoright-of-wayimprovementsforthisprojectexceptapatchandrepaircrossingRainierAvenueNorthwhereagaslinelateralwillbeinstallednorthofthebuilding.ADepartmentofEcologyNPDESNoticeofIntentisnotrequiredforthisprojectbecausetheprojectincludeslessthanoneacreofgrounddisturbance.Itisanticipatedthefollowingpermits/approvalswillalsoapplytothisproject:•CityofRentonSitePlanReview•CityofRentonDemolitionPermit•CityofRentonBuildingPermitStormwoterTechnicalInformationRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICASECC%A’ESSISECTIONVIII:CONSTRUCTIONSTORMWATERPOLLUTIONPREVENTIONPLANANALYSLSANDDESIGN__________________TheConstructionStormwaterPollutionPreventionPlan(CSWPPP)AnalysisandDesignincludestwoparts.PartAincludesaTESCPlanAnalysisandDesignandPartBincludesaConceptualStormwaterPollutionPreventionandSpill(SWPPS)Plan,“Conceptual”isnotedbecausetheSWPPSplanissignificantlydependentoncontractormeansandmethodsandschedule.Asacontractorhasnatyetbeenselectedfortheproject,afinalandthoroughStarmwaterPollutionandPreventionPlan(SWPPP)cannotbeprepared.ATESCplanhasbeenpreparedfortheprojectinaccordancewiththeCityAmendmentstotheKCSWDMandisincludedinthisreport(FiguresVlll-1athroughVlll-1e).PartoftheTESCrequirementsIforthisprojectrequirethecontractorto:1)Identify/designateaTESCSupervisorfortheprojectinaccordancewiththeapprovedEcologyConstructionStormwaterGeneralPermitandCityAmendmentstotheKCSWDM.ThesupervisorshallbeaCertifiedProfessionalinErosionandSedimentControloraCertifiedErosionandSedimentControlLead2)PrepareoformalSWPPPfartheprojectbasedontheirmeansandmethodsandschedule.PARTA—TESCPLANANALYSISANDDESIGNTheTESCplanmeetsminimumTESCrequirementsasdiscussedbelow.TESCRequirement1:ClearingLimitsILimitsofworkareshownontheplans.TESCRequiremeAt2:CoverMeasure5TheContractorisrequiredtocoverexposedsoils.SpecificcriteriaareprovidedintheUSCPlanNotes.ITESCRequirement3:PerimeterProtectionSedimentationbarriers(strawwaffles)havebeenshownontheplanswillbeinstalledatdownstreamedgesofexposedsoilsinsidetheprojectlimitstoretainsedimentbeforerunoffreachesoffsiteareas.TESCRequirement4:TrafficAreaStabilizatioAIThestabilizedconstructionentranceshownontheplansalongWestPerimeterRoadisalignedatthelikelyconstructionentranceformostofthedisturbedareasandwheresignificantexcavationwilloccur.TESCRequiremeAt5:SedimentRetentionABakerTankisshownonthedrawingsatthelowendofthesite.ThefacilityisdesignedinaccordancewiththeCityAmendmentstotheKCSWDM(FigureVlll-2).TheTESCPlanNotesindicatethatStateofWashington(State)waterqualitystandardsoreapplicab!etoconstructionsiterunoff.StormwaterTechnicalInformation:!1RentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICA4[•TESCRequirement6:SurfaceWaterControlInterceptorswaleshovebeenshownontheplonstoconveyrunofftocollectionareaswheretherunoffwillbedirectedtotheBakerTank.Rockcheckdamsmaybeprovidedtomaintainthestabilityofthesefacilitieswhereslopesrequirestabilization.TESCRequirement7:DewateringControlWetseasonconstructionwillbeaddressedintheprojectspecifications.TESCRequirementB:OustControlAirqualityisaddressedintheTESCPlanNotes.TESCRequirement9:FlowControlFlowcontrolisnotrequiredfortheproject;however,someflowcontrolmaybeprovidedwithintheBakerTankduringconstruction.PARTB—“CONCEPTUAL”SWPPSPLANPartB,theConceptualSWPPSPlan,includespotentialpollution-generatingactivitiesandpotentialpollutionpreventionBMPstomitigatetheactivities(FigureVlll-3).SpillcontrolandmaterialhandlingprovisionswillbeaddressedintheformalprojectSWPPPbytheContractoroncethemeans,methods,andscheduleforconstructionhovebeendetermined.LISTOFFIGURESFigureVlll-1a:CivilCoverSheetFigureVIII-1b:CivilNotesSheet(IncludingTESCNotes)FigureVllI-1c:CityofRentonNotesSheet(IncludingESCNotes)FigureVIlI-1d:TESCPlanSheetFigureVIII-1e:TESCSectionsandDetailsFigureVIll-2:BakerTankSizingCalculationsFigureVIII-3:ConceptualSWPPSPlanSECTIONIX:BONDQUANTITIESWORKSHEET,FACILITYSUMMARIES,ANDDECLARATIONOLCQYENANT___ _Therearenoflowcontrolorwaterqualitytreatmentfacilitiesrequiredforthisproject.Asaresult,therearenofacilitysummariesordeclarationofcovenantsrequiredfortheproject.Abondquantitiesworksheethasbeenpreparedfortheprojectandisincludedinthisreport.LISTOFFIGURESFigurelX-1:BondQuantitiesWorksheetStormwaterTechnicalInformationRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICAtSOCJAlESISECTIONX:_OPERATIONSANDMAINTENANCEMANUALOPERATIONSANDMAINTENANCEITherearenoflowcontrolorwaterqualitytreatmentfacilitiesrequiredforthisproject.Asaresult,operationsandmaintenancearerestrictedtoprivateconveyancesystemswhichincludestormdrainpipesanddrainagestructures.TherearenoactionsrequiredonthepartoftheOwnerasidefrommaintainingthesefacilities,whichwillrequireperiodicinspectionandcleaningtofunctionproperly.LISTOFFIGURESFigureX-1a:CatchBasinsandManholesMaintenanceChecklistFigureX-1b:ConveyancePipesandDitchesMaintenanceChecklistIREFERENCESCityofRentonAmendmentstotheKingCountySurfaceWaterDesignManual,2010.KingCountySurfaceWaterDesignManual,2009.WashingtonStateDepartmentofEcology,StormwaterManagementManualforWesternWashington,2012.WashingtonStateDepartmentofEcologyConstructionStormwaterPollutionPrevention,PublicationNo.I12-10-030,datedAugust2012,andtheConstructionStormwaterGeneralPermit(effectiveDateJanuary1,2011).IProposedAerospaceTrainingCenterGeotechnicolReport,datedAugust2015bySoilandEnvironmentalEngineers(FigureR-l).IIIIIStormwaterTechnicalInformation____-RentonAerospaceTrainingCenter,Renton,Washington FIGURESMACNUSSONKLEMENCICASSOCIATES IKINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALTECHMCALINFORMATIONREPORT(TIR)WORKSHEET2009SurfaceWaterDesignManualPart2PROJECTLOCATIONANDDESCRIPTIONProjectNameRenlonAerospaceTrainingcenterDDESPermit#_____________________LocationTownship_______________RangeSection__________________SiteAddress300RainierAveNorth,Renton,WA1/9/2009FigureI-I:T!RWorksheetIIIIPartIPROJECTOWNERANDPROJECTENGINEERProjectOwnerRentonAirport(contact:JonathanWilson)PhoneAddress616WPerimeterRoad,UnitARenton,WA98057ProjectEngineerStevenD.HaluschakCompanyMagnussonKiemencicAssociatesPhone206.292.1200Part3TYPEOFPERMITAPPLICATIONULanduseServicesSubdivison/ShortSubd.IUPDBuildingServicesMIFICommerical/SFRUClearingandGradingURight-of-WayUseUOtherPaft4OTHERREVIEWSANDPERMITSUDFWHPAUShorelineUCOE404ManagementUDOEDamSafetyUStructuralURockeryNaulU_____FEMAFloodplainESASection7UCOEWetlandsUOther_________Part5PLANANDREPORTINFORMATIONIIIIIIIIIIIIIIITechnicalInformationReport—SiteImprovementPlan(Engr.Plans)TypeofDrainageReview/TargetedIType(circleone):i/ModifiedI(circle):LargeSiteSmallSiteDate(includerevision7/27/15Date(includerevisiondates):dates):DateofFinal:—DateofFinal:Part6ADJUSTMENTAPPROVALSType(circleone):Standard/Complex/PreapplicationIExperimental/BlanketDescription:(includeconditionsinTIRSection2)NotApplicableDateofApproval: •KINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALTECHNICALINFORMATIONREPORT(TIR)WORKSHEETPart?MONITORINGREQUIREMENTSMonitoringRequired:cYiNoDescribe:TESCwaterQualityStartDate:TODCompletionDate:TBDPartBSITECOMMUNITYANDDRAINAGEBASINCommunityPlan:oppbSpecialDistrictOverlays:DrainageBasin:StormwaterRequirements:Part9ONSITEANDADJACENTSENSITIVEAREASLiRiver/StreamSteepSlopeEasterlySideofSiteLILakeLIErosionHazardLIWetlandsLILandsHdeHazardLIClosedDepressionLICoalMineHazardLIFloodplainLISeismicHazardLIOtherLIHabitatProteGtionLiPart10SOILSSoilTypeSlopesErosionPotentialUR0-3%Low15-75%Low.AreaNotDisturbedURExcept@ShoringLiHighGroundwaterTable(within5feet)LISoleSourceAquiferLIDtherLISeeps/SpringsLIAdditionalSheetsAttached2009SurfaceWaterDesignManual2119/2009 IKINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALTECHNICALINFORMATIONREPORT(TIR)WORKSHEETREFERENCELIMITATION/SITECONSTRAINTUCore2—OffsiteAnalysisxDrainAwayFromSteepSlopeSensitive/CriticalAreasUSEPALiOtherU__________________[UAdditionalSheetsAttachedPart12TIRSUMMARYSHEET(provideoneTIRSummarySheetperThieshddDischargeArea).-ThresholdDischargeArea:(nameordescription)CoreRequirements(allBapply)DischargeatNaturalLocationNumberofNaturalDischargeLocations:NoneAvailableOffsiteAnalysisLevel:/2I3dated:7/27/15FlowControlLevel:1/2I3orExemptionNumberException1(md.facilitysummarysheet)SmallSiteBMPsConveyanceSystemSpillcontainmentlocatedat:NotApplicableErosionandSedimentControlESCSiteSupervisor:ContactPhone:TBDbyContractorAfterHoursPhone:MaintenanceandOperationResponsibility:?hya/PublicIfPrivate.MaintenanceLogRequired:cYYNoFinancialGuaranteesandProvided:cjiNoLiabilityWaterQualityType:Basic/Sens.LakeIEnhancedBasicmIBog(includefacilitysummarysheet)orExemptionNo.1LandscapeManagementPlan:Yes/cicSpecialRequIrements(asapplicable)AreaSpecificDrainageType:CDAISDO/MDP/BPILMP/SharedFac.N_jRequirementsName:Floodplain/FloodwayDelineationType:Major/MinorIExemption/one100-yearBaseFloodElevation(orrange):Datum:FloodProtectionFacilitiesDescribe:NotApplicableSourceControlDescribelanduse:(comm/industriallanduse)Describeanystructuralcontrols:NotApplicable2009SurfaceWaterDesignManual31/9/2009IIIPart11DRAINAGEDESIGNLIMITATIONSIIIIIIIIIIIIIII •KINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALTECHNICALINFORMATIONREPORT(TIR)WORKSHEETOilControlHigh-useSite:YesTreatmentBMP:MaintenanceAgreement:Yeswithwhom?OtherDrainageStructuresDescribe:Part13EROSIONANDSEDIMENTCONTROLREQUIREMENTSMINIMUMESCREQUIREMENTSMINIMUMESCREQUIREMENTSDURINGCONSTRUCTIONAFTERCONSTRUCTIONClearingLimitsStabilizeExposedSurfacesICoverMeasuresfIRemoveandRestoreTemporaryESCFacilitiesPerimeterProtectionCleanandRemoveAllSiltandDebris,EnsureTrafficAreaStabilizationOperationofPermanentFacilitiesSedimentRetentionLIFlagLimitsofSACandopenspacepreservationareasXSurfaceWaterCollectionOtherDewateringControlDustControlFlowControl—Part14STORMWATERFACILITYDESCRIPTIONS(Note:IncludeFacilitySummaryandSketch)FlowControlType/Description—WaterQualityType/DescriptionLIDetentionC]BiofiltrationLIInfiltrationLIWetpoolLIRegionalFacilityLIMediaFiltrationLISharedFacilityLIOilControlUFlowControlLISpillControlBMPsLIFlowControlBMPsLIOtherLIOther2009SurfaceWaterDesignManual1/9/20094 TECHNICALINFORMATIONREPORT(TIR)WORKSHEETKINGCOUNTY,WASHINGTON,SURFACEWATERDESIGNMANUALI____________________________________________________II____________________________________________________IIIIIIIIIIIIII2009SurfaceWuterDesignManual1/9/2009IPart15EASEMENTS/TRACTSPart16STRUCTURALANALYSISUDrainageEasementUCastinPlaceVaultUCovenantRetainingWallUNativeGrowthProtectionCovenantURockery>4’HighUTractUStructuralonSteepSlopeUOtherUOtherPart17SIGNATUREOFPROFESSIONALENGINEERI,oracivilengineerundermysupervision,havevisitedthesite.ActualsiteconditionsasobservedwereincorporatedintothisworksheetandtheattachedTechnicalInformationReport,Tothebestofmyknowledgetheinformationprovidedhereisaccurate.7/27115Signed/Date SiteLocationAGNUSSON1(1EMENCICASSOCIATESFigure1-2:SiteLocationMapDATE:7/27/15DRAWNBY:SHEETNO. C0C00dNZZ—;I00€’,I0-oI0-I-0IHI00toIIIICua,CoI0CSz•650I00LUaI03C•)CII—Sa)L.Ca’to0IIII______IIIon—0uJ00UCd,=—=x-0—‘zur(dDZ9Dç3UJ(1tX?I10?IXXXV]bMpAIJ0v3vIiIdIdIDDuiDJmoIuItUIIJoXdts\Ib!lIItdIXItouiaXa\woIIoInDo\AionuDoJIvXoIvas\:IVdP:H]Sflridcqt211 C0—F-zzC____ ___ _ODtnEhhflaIt0(Va)0ta)00a0I0.0a,I0)ILuJU0N0a,ICo0C,aa-u.SNa.a0I-•!0000C..,0‘C.a,a)0a)10it.,0-zt—0XuJCD0—U,0CU,It0.—.Zu29D-U.,1:LU.ron]t.oaaflyJyc,GLt!.rn)CIdI.‘tl3I13,’3I mO0,0iiczZD I F:,._1J 1% —- —I IL S0 N --U‘a N UI g N-\v/ h awr’IT’Afl&i% a -.L _ /‘ —I ..‘n S 1— - -- wL!t L I r’)‘°‘‘°•C a : j ‘k1 I(0C-I.—CDIa;•00Iow•2.EI0(0—r00rcpg-C—U‘—CoI•-CIIIr1•!I!Ii‘—riiIupp1.n::;;RentonICenterLiR.nI.nAJip.dCity.!id!I0-ozUIIC)U\pC)‘‘ij•p----•I\j\c/I\/4’I(.\\‘•‘.A00AerospaceTraining WelifieldCaptureZonesOneYearCaptureZoneFIveYearCaptureZoneTenYearCaptureZoneCedarValleySoleSourceAquiferProjectReviewAreaStreamilowSourceAreaCedarValleySoleSourceAquiferAquiferProtectionAreaZonesZoneIZone1ModifiedZone2NetworkStructure•ProductionWell•SphngbrookSpringsRentonCityLimitsPotentialAnnexationArea“4,--“%Fs_I-012 LakeWd,bmton-Newa,ii,,WayFlowControlStandardsPeakRateFlowControlStandard(ExistingSiteConditions)FlowControlDurationStandard(ExistingSiteConditions)FlowContiolDurationStandard(ForestedConditions)FloodProblemFlowUnintorporatedKingCountyFlowControlStandardsE__)RentonCityLlmftsPotentialAnnexationAreap—(aSW7thSI0r__-.r-S‘Site:SE126tht.—-405FWY]27thSt34thSI0sAl12MilesJRehton—— I‘atS‘4..III,r“itI;1i.;:f;:;._:T1‘:—E!L_;_•_.t__4J•I•5%Jcr1ILocation-•-“-htjIj_t/;/i:.*;atL--i.-‘;E:“N\S.‘_/.ç%...4:;C-itN’,’-:.N4I1II_S__n.4‘a4a-_‘j!,-“-m)-—•,FigureIl-Ic:FloodHazardMapSII-14..5//sat%4LaLlie:s/IIiigIC,IIS4’K--2FC.4.4’4.I-C-’/i.k—aI-j•I‘a’‘‘aI.-a—$______L1L)esIII*C—a—S•“kS.t->-—.5,aRevisedFEMAPreliminaryDFIRMNov.2010o16003,200FeetIPSwat.Cuyb.attellM.,.,.lv,.Nnsaw.d.eyo—Ba.tF9t.ICIaatatnIn)‘lLiAGNUSSONASSOCIATESLRoaulawrymitmapsbaseduponthebetstechnicalInformationandrectalfloodstudiesthathavebeenappaovedbyFEMAorhavebeenNsn-R.gulato,ysubmittedtoaMAforapprovalThefloodhazardareasaresit.differentthanthoseshownonthecurrentFEMAeffectiveFloodInsuranceRateMaps(FIRM)forStatenandthIsmapshouldpatL.tv_wia.t.ih.atu..wae.aI.sXa.t_dbeutedtsrdclcamlnIngfloodInsurancerequIrements.It.t..wvva..db45_S6—atiev_vvaa..e.bitv4w1,IDATE:7/27/15DRAWNBY:SHEETNO. SiteLocationStudAreaFigureIll-la:OffsiteAnalysisMapWAIL7127/15MAGNUSSONKLEMENCICASSOCIATESDRAWNBY:SHEETNO.TaskIStudyArea rrrvPROJECTSITEDATE:7/27/15-FigureIlI-Ib:DownstreamSystemMapDRAWNBYSHEETNO.1k1AGNUSSON(Part1)KLEMENCICASSOCIATES-I 1STORM7:.LONNECTIOPoIr%T‘TOPRIVATESflT.EM(YELçv)PROJECTSITESi.DATE:7/27/15FigureIlI-Ib:DownstreamSystemMapSHEETNO.MAGNUSSONKLFMENCIC(Part2)ASSCCATES“ii1 PRIVATESTORMSYSTEMCONTINUESFLOWINGNORTHI-wikiAGNUSSONIK[IMENCICASSOCIATESFigureIlI-Ib:DownstreamSystemMapDATE:7/27/15DRAWNBY:SHEETNO.(Part3) —..DATE:7/27/15[—DRAWNBY:-FigureIlI-Ib:DownstreamSystemMapMAGNVSSONKLEMENCIC(Part4)ASSOCIATESIiI.,I•__•r..:I.iPRIVATESTORMSYSTEMFLOWSIZITODETENTION—STANKI.a rikiAGNUSSONKLEMENCICASSOCIATESIDETENTIONTANKONNECTSTOPRIMARYSTORMSYSTEMALONGWPERIMETERROAD‘—880FT(0.167MI)DOWNSTREAMOFCONNECTIONPOINTi1;iari1IFigureIlI-Ib:DownstreamSystemMapDATE:7/27/15DRAWNBY:SHEETNO.(Part5) ICfl___/__:N_5,nz\F___/:Pt-R___wic-._____1*7U.LnjiWrIL][L)6o__r_‘1_SWt_U)-1___4__ar____K”____________- RentonAerospaceTrainingCenter97751.50KCRTSBasinInformationVersion6.00Allfileswillberead/writtenintheWorkingDirectoryWorkingDirectory:C:\kc_swdm\outputProductionofRunoffTimeSeriesSea—Tao20150720RATCExistingBasintsfProjectLocationComputingSeriesRegionalScaleFactor1.00DataType-ReducedreatingHourlyTimeSeriesFileLoadingTimeSeriesFileC:”XC_SWDH\KQDATA\STTP6ORmtTillPasture0.44acresScalingYr8LoadingTimeSeriesFile:C:\XC_SWDM\XCDATA\STEI60RrnfImpervious017acresAddingYr8TotalArea.0.62acresPeakDischarge0135CFSat6:00onJan9inYear8StoringTimeSeriesFile201S0720RATCExistingBasintsfSTimeSeriesComputedProductionofRunoffTimeSeriesProjectLocationComputingSeriesRegionalScaleFactor1.00DataTypeReducedCreatingHourlyTimeSeriesFileLoadingTineSeriesFileC:\KCSWDM\XCDATA\STTP6OR.rnfTillPasture0.17acresScalingYrLoadingTimeSeriesFile:C:\KSWDM\KCIATANSTEI6ORrnfImpervious0.45acresAddingYr.8TotalArea0.62acresPeakDischarge0231CFSat6:00onJan9inYear8StoringTineSeriesFile:20150720RATCProposedBasin.tsf84._21TimeSeriesComputedIllAGNUSSONI.KLEMENCICASSOCIATESKCRTSKingCountyRunoffTimeSeriesProgramKCRTSCommandCREATEanewTimeSeriesHourlyTimeStepHourlyTimeStepB8KCRTSCommandCREATEanewTineSeriesSea—Tao20150720RATCProposedSasin,tsf88DATE:7/27/15FigureIV-la:KCRTSBasinInformationDRAWNBY:SHEETNO. Delta=0.096CFS[.DATE:7/27/15FigureIV-lb:KCRTSPeakFlowsDRAWNBy:FSHEETNO.MAGNUSSONK!.EMENCICASSOCIATESRentonAerospaceTrainingCenter97751.50KCRTSPeakFlowsHelp/Files-KCRTS..FlowFrequencyAnalysisTineSeriesFile:2D15D720ratcexistingbasintsfProjectLocationSea—Tao———AnnualPeakFlowRates——————FlowFrequencyAnalysi——Peaks——(CFS)Flo.rRateRankTimeofPeak(CFS)0066S2/09/012000.04971/05/021500007722/27/037000.04588/26/042:0000546l0’28’0416000.07231/19/0616000.0684ll’24’063:000.13511/09/09600RankReturnPeriod1013511000009901ProbIExistPropose0.0770.0720.06800650.0540.0490.0450.116CozputedPeaksFlowFrequencyAnalysis22E.003100045.00530062.0071.3081.1050000,960090008000.66705000.23100910980TimeSeriesFile,20150720ratcproposedbasin.tsfProjectLation‘Sea—Tao——AnnualPeakFlowFates—————FlowFrequencyAnalysis10.2311100.000.9901FlowRateRankTimeofPeak——Peaks—RankReturnProb(CFS)(CFS)Period011762/09/01200010091/05/0216000140312/08/0219:000.11278/26/042000133410’29/0416:000126S1/19/0616000.162210/26/060000.23111/09/09600crputedPeaks0.162225.000.9600.140310.000.9000.13345.000.800012653.000.6670.11762.000.5000.11271.300.2310.10091.100.091020850.000980r rnwzo5‘0AM—21CDICDI—_---—r—r—ooI•II‘.\\•0UIM//1”wHrNIIIIII—___ii‘L•__hi&r 21P1111111!JRentonAerospace[TrainingCenterSRcCityofRentonI/// FigureV-2:Ground-AnchoredPipeSectionsandDetails3TotIDUWAR--cTtIIDGTflPfl-QnmToT!.CTDC!!FISTa’WILLEDElkPIE!ftUT!sLIaSJTTWWuflOLCT!CEcTTltSTITETTrLIKWTTTwUo‘edt.—0MAGNUSSONKLEM[NCIC—C——————————a————————*E*I11&DTO!.IT?[Cl!!K]CEDETACOCiA“ncME!MCI!.1W9flTflN-JSijTJ0T4lP1ITISTS[,Tf4•TN!!totMI!lUllEDUTAl!ClE!(ItPIPEILMoStATEPITTADUSA!PT!CIII,AMrIAA!OIMDI!!!•TC.;:tDIEC.’atKnifKSUTCD’GROUND-ANCHOREDPIPEWIThSLIPCONNEO1ON4ThPIPEANCHOR05liT!——tl*VTIAt•pnIKAO.A.TT!IIITPSalt:Itn1n%nfaM-WIlIe,QTmMILd’iC,ma’t.TUIIADIE!AA(ICfl,[IAI!’!!.---CTSICfllECCENTRICREDUCERITNC1C’*1msCjj9Dl12-nfl——-C!-K-—ADC3.044 ——C UI —_————a a ————— Figure V-3:Rational Peak Flow Rate and Conveyance Calculations Renton Aerospace Training Center 97511.50 Rational Flow Calculations U =CIA,where I =Pi and 25 Years 100 Years R (in)=3.4 3.9 1 =a x T A(..bR),where a =2.66 2.61 b =0.65 0.63 Pipe C Area (ac)Tc (mm)‘25 U25 (cfs)100 Q100 (cfs) Roof NE 0.9 0.158 6.3 0.804100 0.39 0.818570 0.46 Roof SW 0.9 0.149 6.3 0.804100 0.37 0.818570 0.43 Area Drain 0.2 0.062 6.3 0.804100 0.03 0.818570 0.04 I:\RentonAeroCntrCiv\Calculations\Drainage\Conveyance\20150722 RATC Rational.xlsx \20150722 RATC Rational Caics IWorksheetforRoofNEPipe100-YrNormalDepthProjectDescriptionFrictionMethodManningFormulaISolveForNormalDepthInputDataRoughnessCoefficient0.010ChannelSlope000750ft/ftDiameter0.50ftDischarge0.46ResultsINormalDepth0.32ft<—2/3FullFlowArea0.13112WettedPerimeter0.92ftHydraulicRadius0.14ftTopWidth0.48ftCriticalDepth0.35ftPercentFull63.3CriticalSlope0.00586ft/ftVelocity3.51Ills<>3WsVelocityHead0.19ftSpecificEnergy0.51ftFroudeNumber1.19MaximumDischarge0.68ft’/sDischargeFull0.63ft3IsSlopeFull000398ft/ftFlowTypeSuperCriticalGVFInputData_____________DownstreamDepth0.00ftILength0.00ftNumberOfSteps0GVFOutputDataUpstreamDepth0.00ftProfileDescriptionProfileHeadloss0.00ftAverageEndDepthOverRise0.00%NormalDepthOverRise63.33%DownstreamVelocityInfinityftisIBenueySystems,Inc.HaestadMethodsSolcUdt.MasterV8l(SELECTserIes1)[08.11.01.03]7122120155:0944PM27SiemonsCompanyDrIveSuite200WWatertown,CT06795USA+1-203-755.1666PageIof2I WorksheetforRoofNEPipe100-YrNormalDepthGVFOutputDataUpstreamVelocityInfinityft/sNormalDepth0.32ftCriticalDepth0.35ftChannelSlope0.00750ft/ftCriticalSlope0.00586ft/ftBentleySystemsInc.HaestadMethods5oloUç&twMasterVBi(SELECTserles1)[08.ll.O1.03J7122120155:09:PM27SlemonsCompanyDriveSuite200WWatertown,CT06795USA+1-203-755-1666Page2of2 IWorksheetforRoofSWPipe100-YrNormalDepthProjectDescriptionFrictionMethodManningFormulaISolveForNormalDepthInputData“Roughnesscoefficient0010ChannelSlope0.01000ft/ftDiameter0.50ftDischarge0.43ft’is<ResultsINormalDepth0.25ft<——1/2FullFlowAreaDlift’WettedPerimeter0.84ftHydraulicRadius0.13ftTopWidth0.50ftCriticalDepth0.33ftPercentFull552CriticalSlope0.00562tUftVelocity3.87ft/s<>3ft/sVelocityHead0.23ftSpecificEnergy0,51ftFroudeNumber1.44MaximumDischarge0.78F/sDischargeFull0.73F/sSlopeFull000348ft/ftFlowTypeSupercriticalGVFInputDataDownstreamDepth0.00ftLength0.00ftNumberOfSteps0GVFOutputDataUpstreamDepth0.00ftProfileDescriptionProfileHeadloss0.00ftAverageEndDepthOverRise0.00%NormalDepthOverRise55.22%DownstreamVelocityInfinityfl/sIBentleySystems,Inc.HaestadMethodsSolodMasterWI(SELECTserIesI)[08.11.01.0337122120155:09:03PM27SlemonsCompanyDriveSuite200WWatertown,CT06795USA+1-203-755.1666PageIof2I WorksheetforRoofSWPipe100-YrNormalDepthGVFOutputDataupstreamVelocityInfinityft/sNormalDepth028ftCriticalDepth0.33ftChannelSlope0.01000MtCriticalSlope0.00562ft/ftBentleySystemsInc.HaestadMethodsSoIoubwMasterVal(SELECT5erIesI)L08.l1.01.03]7122120155:09:03PM27SlemonscompanyDriveSuite200WWatertown,CT06795USA+1.203.755-1866Page2of2 IWorksheetforAreaDrainPipe100-YrNormalDepthProjectDescriptionFrictionMethodManningFormulaISolveForNormalDepthInputDataIRoughnessCoefficient0010ChannelSlope001600ft/ftDiameter033ftDischarge004ft’/s<ResultsNormalDepth0.08ft<——1/4FullFlowArea0.02ft2IWettedPerimeter0.34fthydraulicRadius0.05ftTopWidth0.28ftCriticalDepth0.11ftPercentFull24.4%CriticalSlope0.00482ft/ftVelocity2.47Ws<FullPipe>3ft/sVelocityhead0.10ftSpecificEnergy0.18ftFroudeNumber1.83MaximumDischarge0.33ft2/sDischargeFull0.30ftt/sSlopeFull0.00028ft/ftFlowTypeSuperCriticalIGVFInputDataDownstreamDepth0.00ftILength0.00ftNumberOfSteps0GVFOutputData-UpstreamDepth0.00ftProfileDescriptionProfileHeadloss0.00ftAverageEndDepthOverRise0.00%NormalDepthOverRise24.41%DownstreamVelocityInfinityft/sBentleySystems,Inc.HaestadMethodsSolBUoUçbwMasterWI(SELECTserlesI)[08.ll.0l,03J7I222Ol55:08:38PM27SlemonsCompanyDriveSuite200WWatertown,CT05795USA+1-203-755-1666Page1of2I WorksheetforAreaDrainPipe100-YrNormalDepthGVFOutputDataupstreamVelocityInfinityft/sNormalDepth0.08ftCriticalDepth0.11ftChannelSlope0,01600ft/ftCriticalSlope0.00482ft/ftBentleySystems,Inc.HaestadMethodsSolBed&A.MasterV8I(SELECTserIes1)[08.11.01.03]7122/20155:08:38PM27SiemensCompanyDriveSuite200WWatertown,CT06795USA+1-203-755-1666Page2of2 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Figure VIlI-Ib:Civil Notes Sheet —17— —-[S -- GRADING NOThS 01110(111100 01 10 ISE SE P1511(5550 01110 ILEOIOOI 0 P5000 0101Malls551110011*51110. 01 10 I-— 0 C1.021234 ——FigureVIlI-Ic:CityofRentonNotesSheet——s——a——a—aaa————MACNU550NKLEMtNCIC_.,anwU4io•-edt—.—0fltflflM•CTTS—I—---—23C1.034 ED00althr1isFflJ’baow‘SMCoC1CD-ha—I‘iiCa0-owCaD.CDCDiig5-IlC11“3(.34—IIISSC-7,C,2P9oil-aHIII1RentonAerospaceTrainingCentercityofRenton7.7’;flZ• —a ——a ——a a ————a ——a —— p sqe pue suoipe OS3I :efrfl eJnO!d 4 £ 115111 lIEN IC IV SI IDIMS3 Eczcz tJISNINIlI515511] ID 1)WI I7S1 a)I 55501 IC 13555 [0t3 -——I - fl— 1)-la ‘4, ‘tfl5 111t o .— —l 0 a C)m DDNIW]Th NOSSflNDVW . 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MAGNUSSONKLEMENCICASSOCIATESRentonAerospaceTrainingCenter9775150BakerTankSizingCalculationNotes:1)ThedesignoftheBakerTankisbasedonCityofRentonAmendments(2010)totheKingCountySurfaceWaterDesignManual(2009)2)Thedesigninflowisbasedanthe10-Yearstormascalculatedwitha15-MinutetimestepusingKCRTSfarthetributarydrainagearea(totatprojectdisturbedareawasusedforthiscalculation)3)SeeattachmentfarKCRTSFlow/SizingCalculationTributaryAreaToi0Aeo=268404j206162ac•%Impervious0%0.0000ac%Periious100%0.6162acIQ100.135cfsISeenate3aboveTankSurfaceArea:Required:SA=2Q-cNSAPondSurfaceAreaQ1aSeeno’e3aboveV.,SettincVelocity(useMediumsiltsettlingvelocityof0.00096ft/sec)0.00096ft/secSA=281ft1Provided:SA=281ft2Deoths:UWEVclumes:Setting2ftSettting563dSediment3ft<=SedstorageSediment844ci<=SedstorageTotal5ftTotal1406ciRequiredTankVoume=1.406cfProposedL1=23ftProposedL2=ft(useifasecondtankinparallelisneeded)ProposedW=8ftProposedH=9.67ft(LxWxH)=1,779cf13,309gallonsFigureVIII-2:BakerTankSizingCalculationl:\RentonAeroCntrCiv\Calculations\DrainageRepothFigs\Supportinglnfo\20150723KCRTSBakerTankSizing.xls RentonAerospaceTrainingCenter97751.50KCRTSBakerTankSizingII[<COTSCommandCREATEanewTimeSer:erPz-,dnctnnofRu000CTimeSeriesFroectLocationSea—TaoCaputnoSet-se.20150722RATCEakerTanktsfRegionatScaeFmcror100DataTypeReducedCreattngiS—cinuteTimeSeriesFileLad:ngTaeSeriesF:leC‘KC_SVDH\XD_DATA\STTGISRrufBr11Graes02acresScalingV5TotalArea0-62act-emPeakD1iar5e0311Cr5at630onjet9inYearStoringTimeSeriesFile20100722RATCSakerTanktsfBTimeSeriesComputed[<COTSCommandentertheAnalysisTLSHoduleAnalysisToolsCommandComputePEAKSandFlowFrequenciesLnadngStage/Dischargecurve20150722ratobakertanktsfP3ccFrequencyAnalysisTimeSeriesFile20153722relcbakertanktsfProjectLocationSea—TenFrequencies&PeakssavedtoPnle.20100722RATCEakarTankSizingpits-I.LQl3S310.000900I10-YrPeakFlowIIIIIIIAllfileswillbeWorkingDirectoryKingCountyRunoffTimeSerieeProgramVersion6.00read/writtenintheWorkingDirectoryC\kcswdn\output15MinuteTimeStepIIIIIIIIIIFin,FrequencyAnalysisbakertanktsfTimeSeriesFile20150722ratcProjectLocationSea—Tan———AnnualPeakFlovhates———FlowRateRankTimeofPeak(CFS)0.0?]41/09/0112.45oas71/06/021000.135312/0910217:15001289/26/041000.194211/17/045:000OSS61/16/0615:000_OS?S11/24/061:00031111/09/086-30ComputedPeaksIII—FlowFrequencyAnalysis—————Peaks——RankReturnProb(CFS)Period0.3111100.0009900.194225.0009600073450000000.05753.000,6670.05562.000.5000.03571.300.2310.01291100.091Ei0.27250.000.900 FigureVIlI-3:ConceptualSWPPPCONCEPTUALSTORMWATERPOLLUTIONPREVENTIONANDSPILLPLANRentonAerospaceTrainingCenterRenton,WashingtonJuly27,2015MAGNUSSONKLEMENCICASSOCIATES301BFthAvenue,SuIe320DSetIIe,Washington96101.269912062921200r:206292201 MAGNUSSONKLEMENCIC‘AtIISLCiLüttLPROJECTDESCRIPTION1SECtION2:EROSIONCONTROLSPECIALIST____________1SfCTiDti3:EXISTINGSITECONDffiONS__________________1SECTION4:ADJACFNTAREAS1&ECIION5:..CRITICALAREAS2SiCT.LONLi•.—••________________________________-2SECTION7POTENTIALEROSIORAN.flPOLLUTION-GENFRATINGaCIDLIflES_______________________________________2SECTIONB:CONSIRUCTIONBMfS--.3PartA—TESCPlanAnalysisandDesignPartB—ConceptualSWPPSPlanSECTION9:.POTENTIALCONSTRUCTIONPHASINGANDSCHEDULE6IIIIIIIIConceptualStormwaterPollutionPreventionandSpillPlanTableofContentsIIRentanAerospaceTrainingCenter,Rentan,WashingtonI MAGNUSSONKLEMENCICArOC’A’ESSECTION1:PROJECTDESCRIPTION__ ___ _ ___ _ ___ _TheRentonAerospaceTrainingCenter(RATC)projectintheCityofRenton(City),Washington,islocatedat300RainierAvenueNorth,atthesouthwestcorneroftheRentonMunicipalAirportwhereNW3rdPlaceintersectsRainierAvenueNorth.Theprojectislongandnarrow,borderedatthewestbyRainierAvenueNorth,attheeastbyWestPerimeterRoad(aprivateroadownedbytheRentanMunicipalAirport),andatthenorthandsouthbyundevelopedlands.TheproposedRATCprojectisa23,000-square-foot(—12,760-square-footfootprint),three-storyfacilitythatwillprovidetrainingandjobsimulationsforaworkforceenteringtheregion’saerospacemanufacturingindustry.Theprojectincludesthefollowingtasks:•Removaloftheexistingbuilding.•Constructionofanewbuilding,whichincludesalobby,administrativearea,shopspace,designandfabricationspace,classrooms,andabuildingservicescore.•Shoringalongthenorth,south,andwestsidesofthenewbuildinglowerfloor.•Partialremovaloftheexistingasphaltparkinglot•ConstructionofanewADAaccessiblepavedentryroute.SECTION2zEROSIONCONTROLSPECIALISTAnErosionandSedimentControl(ESC)supervisorhasnotbeendesignatedforthesiteatthistimebecausethecontractor,whowillberequiredtodesignatetheindividualforthisrole,hasnotyetbeenselectedfortheproject.SECTION3:EXISTINflSITECONDITIONS____ _ ____ _ _ ____ThesiteislocatedeastofRainierAvenueNorth,whichfunctionsasaninterceptorswaleforupstreamflows.Asaresult,therearenooff-siteflowsdirectedtothesite.Thewesterlyportionofthesiteisrelativelyflatandincludesanexistingbuilding,pavedwalksandparkinglot,andlandscapedareasurroundingthebuilding.Theeasterlyportionofthesiteincludesasteepslopethatisapproximately30feethighandconnectstheelevatedwesterlyportionofthesitetoWestPerimeterRoad.Thesteepslopewasnotanaturalconditionbutwasconstructedbyplacingfillonthewesterlyportionofthesiteduringconstructionoftheprevious(current)sitedevelopment.Theexistingsiteincludesapproximately0.6acresofimperviousarea.SFCTION4-ADJACENTAREAS-___ ___ _____ ___ ___ ___ ___ ___ _TheeasterlyboundaryofthesiteatWestPerimeterRoadisanextensionoftheRentonMunicipalAirport.Asaresult,theareaeastofthesiteisrelativelyflat.Theareasnorthandsouthofthesiteoreextensionsofthesitetopographythatcrossesthesiteintheeast-westdirection.TheareawestofthesiteincreasesinelevationfromRainierAvenueNorthtowardthewest.BecausestormwaterrunofffromConceptualStormwaterPollutionPreventionandSpillPlanERentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICA55CCAlESSthewestisinterceptedbeforeitreachesthesiteandtheareasnorthandsouthdrainparallelwiththesite,theonlysignificantinteractionofstormwater(andconstructionstormwater)runoffbetweenthesiteandadjacentareasisatthestormdrainconnectionsalongWestPerimeterRoad.ISECTION5CRITICALAREASAspreviouslynoted,theeasterlyportionofthesiteincludesasteepslopethatisapproximately30feetIhighandconnectstheelevatedwesterlyportionofthesitetoWestPerimeterRoad.Toprotecttheexistingslope,stormwater(andconstructionstormwater)willbedirectedawayfromtheslope.SECTION6SOILSAccordingtotheCitySoilSurveyMap,thesoilsatthesiteappeartobepredominantlyUrbanLand(Ur).TheexistingsoilconditionsweredescribedintheGeotechnicalreportbySoil&EnvironmentalEngineers,mc:Ingeneral,thesubsoilsincludeloose611overcompetentnativesoils.Basedonthevisualclassificationandtheblowcountdata,webe/ivethattheMwasp/acedrandomlyandwithoutcompaction.Thenativesailsbelowthe/111includealluvialsailsoverglaciallydepositedmaterials.SECTION7:POTENTIALEROSIONANDPOLLUTION-GENERATINGACTIVITIESErosionproblemsduringconstructionoftheRATCprojectareunlikelyiftheBMPguidelinesshownontheplansandoutlinedinthisreportarefollowed.Off-siteflowsthatcouldcauseerosionwithintheprojectlimitsareinterceptedanddonotenterthesite.Mostofthedisturbedareawilleitherbewithinthebuildingexcavationareaadjacenttosoldierpilesand/orunderthestabilizedconstructionaccessforthesite.Mostofthepotentialerosionshouldbelimitedtoareaswhereunconcentratedsheetflowsofconstructionstormwaterrunoffoccur.Consistentwiththegeneralpermitrequirements,potentialpollutantsotherthansedimentwillbehandledanddisposedofinamannerthatdoesnotcausecontaminationofstormwater.Non-sedimentpollutantsthatmaybepresentduringconstructionactivitiesinclude:•Petroleumproductsincludingfuel,lubricants,hydraulicfluids,andformoils•Polymerusedforsoilstabilization•Watertreatmentchemicals(coagulant,acid,sodiumbicarbonate)•Concrete•Paints•FertilizersThesematerials,andothermaterialsusedduringconstructionwiththepotentialtoimpactstormwater,willbestored,managed,used,anddisposedofinamannerthatminimizesthepotentialforreleasestotheenvironmentandstormwater.IConceptualStarmwoterPollutionPreventionandSpillPlan_-RentonAerospaceTrainingCenter,Renton,Washington MACNUSSONKLEMFNCICASSOCIA1ESSECTIONACONSTRUCTIONBMPS_ _ ______ _ _ _ _ ______ _ _ _ _ __CLEARINGLIMITSClearinglimitsoreshownontheaftacheddrawingsandwillbeflaggedpriortoconstruction.CONSTRUCTIONACCESSAtemporaryconstructionaccesswillbecreatedbyWestPerimeterRoodadjacenttothemajorityoftheexcavationonsite.Awheelwashareawithsandbagrunoffcontainmentsystemwillalsobeinstalledontheexistingparkinglot.FLOWRATESFlowcontrolisnotrequiredfortheproject;however,someflowcontrolmaybeprovidedwithintheBakerTankduringconstruction.SEDIMENTCONTROLSABakerTankisshownonthedrawingsatthelowendofthesite.ThefacilityisdesignedinaccordancewiththeCityAmendmentstotheKingCountySurfaceWasterDesignManual.TheTESCPlanNotesindicatethatStateofWashington(State)waterqualitystandardsareapplicabletoconstructionsiterunoff.SOILSTABILIZATIONTheconstructiondrawingsandspecificationsidentifyguidelinesthatshallbeadheredtoregardingsoilstabilization.SLOPEPROTECTIONToprotectthesteepslopeonsite,thecontractorshalldivertconstructionstormwaterawayfromthetopofslope.DRAININLETPROTECTIONAdjacentdownstreamordown-slopecatchbasininletswillbeprotectedpertheCityofRentonstandardinletprotectiondetailandperthefollowingguidelines:•Stormdraininletsoperableduringconstructionshallbeprotectedsothatsurfacewaterrunoffdoesnotentertheconveyancesystemwithoutfirstbeingfilteredortreatedtoremovesediment.aApproachroadsshallbekeptclean.•Inletsshouldbeinspectedweeklyataminimumanddailyduringstormevents,Inletprotectiondevisesshouldbecleanedorremovedandreplacedbeforesixinchesofsedimentcanaccumulate.ConceptualStormwaterPollutionPreventionandSpillPlanRentonAerospaceTrainingCenter,Renton,Washington MACNUSSONKLEMENCICASSOCIAItSPOLLUTANTCONTROLSediment-lodenrun-offwillbetreatedintheBakerTankpriortoleavingthesite.Otherpollutantcontrolguidelinesinclude:•Pollutants,includingwastematerialsanddemolitiondebris,thatoccuronsiteduringconstructionshallbehandledanddisposedofinamannerthatdoesnotcausecontaminationafsurfacewater.•Maintenanceandrepairofheavyequipmentandvehiclesinvolvingoilchanges,hydraulicsystemdraindown,solventandde-greasingcleaningoperations,fueltankdraindownandremoval,andotheractivitieswhichmayresultindischargeorspillageofpollutantstothegroundorintosurfacewaterrunoffmustbeconductedusingspillpreventionmeasures,suchasdrippans.Contaminatedsurfacesshallbecleanedimmediatelyfollowinganydischargeorincident.Emergencyrepairsmaybeperformedon-siteusingtemporaryplasticplacedbeneathand,ifraining,overthevehicle.•Wheelwashortirebathwastewaterandrunofffromareaswithfertilizershallbedischargedtoaseparatedon-sitetreatmentsystem.•Soilstabilizationpolymers,watertreatmentchemicals,andpaintsshallbedischargedtoaseparatedon-sitecollectionsystem.•ConcretewashoutbasinsshallbeusedIapreventcement-ladenrunoffand/orwastewaterfromleavingthesite.•BMPsshallbeusedtopreventartreatcontaminationofsurfacewaterrunoffbypHmodifyingsources.Thesesourcesincludebulkcement,cementkilndust,flyash,newconcretewashingandcuringwaters,wastestreamsgeneratedfromconcretegrindingandsawing,exposedaggregateprocesses,andconcretepumpingandmixerwashoutwaters.SPILLRESPONSETheprimaryobjectiveinrespondingtoaspillistoquicklycontainthematerial(s)andpreventorminimizetheirmigrationintostormwaterrunoffandconveyancesystems.Ifthereleasehasimpactedon-sitestormwater,thereleasedmaterialsonsiteshallbecontained,preventingtheirreleaseintoreceivingwaters.1Ifaspillofpollutantsthreatensstarmwateratthesite,thespillresponseproceduresoutlinedbelowmustbeimplementedinatimelymannertopreventthereleaseofpollutants.I•TheESCsupervisorwillbenotifiedimmediatelywhenaspill,orthethreatofaspill,isobserved.TheESCsupervisorwillassessthesituationanddeterminetheappropriateresponse.•IfspillsrepresentanimminentthreatafescapingESCfacilitiesandenteringthereceivingwaters,facilitypersonnelwillrespondimmediatelytocontainthereleaseandnotifythesuperintendentafterthesituationhasbeenstabilized.IConceptualStormwaterPollutionPreventionandSpillPlan—___________________RentonAerospaceTrainingCenter,Rentan,Washington MACNV550NKLEMENCICSpillkitscontainingmaterialsandequipmentforspillresponseandcleanupwillbemaintainedatthesite.Eachspillkitmaycontain:—Oilabsorbentpods(onebole)—Oilabsorbentbooms(40feet)—55gallondrums(2)—-9milplasticbags(10)—Personalprotectiveequipmentincludingglovesandgoggles•TheESCsupervisor,orhisdesignee,willberesponsibleforcompletingthespillreportingformandforreportingthespilltotheappropriatestateorlocalagency.•FacilitypersonnelwithprimaryresponsibilityforspillresponseandcleanupwillreceivetrainingfromtheESCsupervisor.Thistrainingwillincludeidentifyingthelocationofspillkitsandotherspillresponseequipmentandtheuseofspillresponsematerials.•Spillresponseequipmentwillbeinspectedandmaintainedasnecessarytoreplaceanymaterialsusedinspillresponseactivities.DEWATERINGDewateringwillbeperformedononasneededbasis.StormwatershallbedivertedthroughtheBakerTankpriortodischarge.BMPMAINTENANCEMaintenanceoferosioncontrolandpollutionpreventionBMPswillbeonacontinuingbasisthroughouttheconstructionprocess.TheapplicantunderstandsthattheuseofadditionalBMPsmayberequiredbasedonsoilconditions,precipitation,andconstructionactivities.•TemporaryandpermanenterosionandsedimentcontrolBMPsshallbemaintainedandrepairedasneededtoassurecontinuedperformanceoftheirintendedfunction.MaintenanceandrepairshallbeconductedinaccordancewiththeBMPs.•SedimentcontrolBMPsshallbeinspectedweeklyorafterarunoff-producingstormeventduringthedryseasonanddailyduringthewetseason.Theinspectionfrequencyforstabilized,inactivesitesshallbedeterminedbytheCitybasedonthelevelofsoilstabilityandpotentialforadverseenvironmentalimpacts.•TemporaryerosionandsedimentcontrolBMPsshallberemovedwithin30daysafterfinalsitestabilizationisachievedorafterthetemporaryBMPsarenolongerneeded.Trappedsedimentshallberemovedorstabilizedonsite.DisturbedsoilresultingfromremovalofBMPsorvegetationshallbepermanentlystabilized.PROJECTMANAGEMENTAcopyoftheapprovedplansandthisreportwillbeonsiteatalltimesduringconstruction.SeasonalworklimitationsasdeterminedbytheCityshallbeadheredto.ConceptualStormwaterPollutionPreventionandSpillPlanRentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMFNCICA55CCAlESS•InspectionandMonitoring:BMPsshallbeinspected,maintained,andrepairedasneededtoassurecontinuedperformanceoftheirintendedfunction,•Reporting:Repanspillageordischargeofpollutantswithin24hours.•Maintenance:Maintenanceandrepairofheavyequipmentandvehiclesinvolvingoilchanges,hydraulicsystemdraindown,solventanddegreasingcleaningoperations,fueltankdraindownandremoval,andotheractivitieswhichmayresultindischargeorspillageofpollutantstothegroundorintosurfacewaterrunoffmustbeconductedusingspillpreventionmeasures,suchasdrippans.Contaminatedsurfacesshallbecleanedimmediatelyfollowinganydischargeorincident.Emergencyrepairsmaybeperformedon-siteusingtemporaryplasticplacedbeneathand,ifraining,overthevehicle.SECTION9’POTFNTIAICONSTRUCTIONPHASINGANDSCHEDUthApotentialconstructionsequenceis:•Attendpre-constructionconferencewithCityofRentonandutilityrepresentativespriortostartinganywork.•Flagallclearinganddemolitionlimits.•InstallcatchbasinprotectionandsedimentationbarriersinlocationsasshownontheTESCplans.•Installtemporaryconstructionentranceandwheelwasharea.•Clearandgruballareasasshownonthesitedemolitionplans.•Removeanddisposeofasphaltconcretepavement,cementconcretesidewalkandcurbinginareasshownondemolitionplan.Donotremoveanyasphaltconcretepavementorcementconcretepavementuntilanerosioncontrolplanhasbeenapproved.•Removeanddisposeexistingbuildingandfoundationasshownindemolitionplan.•Installshoringandexcavatefornewbuilding.•Installstormdrainageandsanitarysewersystems.—Installinletprotectionascatchbasinsareinstalled.•Installwatersystemanddryutilitiesservicesasshownonplans.CoordinateworkwithCityofRentonandutilityrepresentatives.•Finegradeandinstallcrushedsurfacingtopcourse.•Installcementconcretepavement,curbing,walks,andcementconcretewallsasshownonplans.•Landscape,hydroseed,andinstallamenitiesperlandscapepans.ConceptualStormwaterPollutionPreventionondSpillPlan•1RentonAerospaceTrainingCenter,Renton,Washington MAGNUSSONKLEMENCICA:r:Ft•Erosioncontrolfacilitiesshallremaininplaceuntilthesitesoilshavebeenstabilized.•Removeallsedimentfromdrainagestructuresandpipes.•ContractortoremovecatchbasinprotectionandotherTESCfacilitiesonlyasdirectedbytheowneratsubstantialcompletionoftheproject.•Contractorshallrepairand/orrestorelandscapeand/orsitefeaturesafterremovaloftheTESCfacilities.ConceptualStormwaterPollutionPreventionandSpillPlanRentonAerospaceTrainingCenter,Renton,Washington SiteImprovementBondQuantityWorksheet515Webdate:02/22i2o1:KingCountyDepartmentofPermitting&EnvironmentalReview35030SEDouglasStreet,Suite210Snogualmie,Washington98065-9266Foralternateformats,call206—296—6600.206-296-660CRelay711ProjectName:RentonAerospaceTrainingProjectDate:7/27/15Location:300RainierAvenueNorth,Renton,WAProjectNo.:__________________________ActivityNo.:_______________________________Note:Allpricesincludelabor,equipment,materials,overheadandClearinggreaterthanorequalto5000boardfeetoftimber?profit.PricesarefromRSMeansdataadjustedfortheSeattleareaorfromlocalsourcesifnotincludedintheRSMeansdatabase.___________yesxnoIlyes,ForestPracticePermitNumber:______________________(RCW76.09)Page1of9FigureIX-i:BondQuantitiesWorksheetUnitpricesupdated:02/12/02Version:11/26/2008—jQuaWoçjt.xl7a——7poitp:7/15 a a a —a a I rr EZ ETh EEl —S S C Site Improvement Bond Quantity Worksheet o a a S15 Web date:02122/201 Unit #of Reference #Price Unit Quantity Applications Cost EROSIONISEDIMENT CONTROL Number Backfill &compaction-embankment ESC-1 $5.62 CV 95 1 534 Check dams,4’minus rock ESC-2 SWDM 546.3 $67.51 Each Crushed surfacing 1 1/4”minus ESC-3 WSDOT 9-03.9(3)$85.45 CV Ditching ESC4 $8.08 CV Excavation-bulk ESC-5 $1.50 CV Fence,silt ESC-6 SWDM 543.1 $1.36 LF Fence,Temporary (NGPE)ESC-7 $1.38 LF Hydroseeding ESC-8 SWDM 5.4.2.4 $0.59 SY Jute Mesh ESC-9 SWDM 5.4.2.2 $1.45 SY Mulch,by hand,straw,3”deep ESC-10 SWDM 5.4.2.1 $2.01 SY Mulch,by machine,straw,2”deep ESC-11 SWDM 5.4.2.1 $0.53 SV Piping,temporary,CPP,6”ESC-12 $10.70 LF Piping,temporary,CPP,8”ESC-13 $16.10 LF Piping,temporary,CPP,12”ESC-14 $20.70 LF Plastic covering.6mm thick,sandbagged.ESC-15 SWDM 5.4.2.3 $2.30 SV 3 1 7 Rip Rap,machine placed;slopes ESC-16 WSOOT 9-13.1(2)$39.08 CV Rock Construction Entrance,50’xlS’xl’ESC-17 SWDM 5.4.4.1 $1,464.34 Each Rock Construction Entrance,100’xlS’xl’ESC-18 SWDM 5.4.4.1 $2,928.68 Each 1 1 2929 Sediment pond riser assembly ESC-19 SWDM 5.4.5.2 S 1,949.38 Each Sediment trap,5’high berm ESC-20 SWUM 5.4.5.1 $17.91 LF Sed.trap.5’high,riprapped spiltway berm section ESC-21 SWDM 5.4.5.1 $68.54 LF Seeding,by hand ESC-22 SWDM 5.4.2.4 $0.51 SV Sodding.1”deep,level ground ESC-23 SWDM 5.4.2.5 $6.03 SY Sodding,1”deep,sloped ground ESC-24 SWDM 5.4.2.5 $7.45 SY TESC Supervisor ESC-25 $74.75 HR 104 I 7774 Water truck,dust control ESC-26 SWUM 5.4.7 $97.75 HR WRITE-IN-ITEMS ****(see page 9) CB Insert $300,00 Each 7 1 2100 Baker Tank $50.00 1 210 10500 Sedimentation Barrier $300.00 1 I 300 Page 2 of 9 ESC SUBTOTAL: 30%CONTINGENCY &MOBILIZATION: ESC TOTAL: COLUMN: S 24,143.48 5 7,243.04 S 31,386.52 A Unit prices updated:02/12/02 Version:11/26/2008 Report Date:7/24/2015BondQuantitiesWorksheet.xlsx SiteImprovementBondQuantityWorksheetWebdate.12)02/2008ExistingFuturePubhcPrivateQuantityCompletedRight-of-WayRightofWayImprovements(BondReduction)’&DrainageFacilitiesQuant.UnitPriceUnitQuant.CostQuant.ICostQuant.ICostComplete]CostGENERALITEMSNo.Backfill&Compaction-embankment01-1$5.62CY316.86196211,02644Backfill&Compaction-trench01-2$8.53CY46392.3840341.20Clear/RemoveBrush,byhand01-3$0.36SYCleahng/Gwbbing[rreeRemoval01-4$8,876.16Acre0.06532.570.54,438.08Excavation-bulkGl-5$1.50CY82123.0064509,675.00Excavation-Trench01-6$4.06CV1664.9630121.60Fencing,cedar,6’high01-7$18.55LFFencing,chainlink,vinylcoated,6’higl01-8$13.44LF40537.60Fencing,chainlink,gate,vinylcoated,01-9$1,271.81Each33,815.43Fencing,splitrail.3’high01-10$12.12LFFill&compact-commonbarrow01-11$22.57CVFill&compact-gravelbaseGl-12$25.48CV14356.722506,370.00Fill&compact-screenedtopsoil01-13$37.85CV642,422.40672,535.95Gabion,12”deep,stonefilledmeshGl-14$54.31SYGabion,18”deep,stonefilledmesh31-15S74.85SYGabion,36”deep,stonefilledmesh31-16S132.46SYGrading,fine,byhand31-17$2.02Sf97195.94100202.00Grading,fine,withgraderGl-l$0.95SY199189.0520291,927.55Monuments.3’long01-ic$135.13EachSensitiveAreasSign31-20$2.88EachSodding,1”deep,slopedground01-21$746SYSurveying,line&grade01-27S788,2632,364.78Surveying,lotlocationIlines31-23$1,556.64AcreTrafficcontrolcrew(2flaggers)01-24S85.18HRTrail,4”chippedwood01-25S7.59SYTrail,4”crushedcinder01-26$8.33SYTrail,4”topcourse01-27$6.19SYWall,retaining,concrete01-28S44.16SF2109,273.60Wall,rockery%b.!.9$Page3of9SUBTOTAL6,658.6650,264.65Unitpricesupdated:02/12/02KCC27Aauthorizesonlyonebondreduction.Verston11/26/08jzj)uanL””/orkstsxReçz”-te:Z]’ ——.‘—Cate:008 —bite Improvement Bond Quantity Worksheet Existing Future Public Private Bond Reduction Right-of-way Right of Way Improvements &Drainage Facilities Quant. I Unit Price Unit Quant.Cost Quant.I Cost Quant.I Co5t Completej Cost ROAD IMPROVEMENT No. AC Grinding.4’wide machine <l000sy RI-i 5 2800 SY AC Grinding.4’wide machine 1000-200 RI-2 S 1500 SY AC Grinding,4’wide machine >2000sy RI-S S 7.00 SY AC Removal/DisposaL/Repair RI-4 $67.50 SY 284 19,170.00 42 2,835.00 Barricade,type I RI-S S 30.03 LF Barricade,type III (Permanent)RI-6 S 45.05 LF Curb &Gutter,rolled RI-7 $17.00 LF Curb &Gutter,vertical Rl-8 $12.50 LF Curb and Gutter,demolition and dispos IRI-9 5 18.00 IS 8 144.00 298 5,364.00 Curb,extruded asphalt RI-iD 5 5.50 LF Curb,extruded concrete RI-li S 7.00 LF 8 56.00 165 1,155.00 Sawcut,asphalt,3”depth Rl-12 5 1.85 LF 234 432.90 272 503.20 Sawcut,concrete,per 1”depth RI-is 5 1.69 LF 64 108.16 Sealant,asphalt RI-14 S 1.25 LF Shoulder,AC,(see AC road unit price RI-is $-SY Shoulder,gravel.4”thick Rl-16 5 15.00 SY Sidewalk,4”thick RI-i?S 35.00 5’?16 630.00 221 7,735.00 Sidewalk,4”thick,demolition and dispo Rl-18 S 29.50 SY 12 354.00 38 1,121.00 Sidewalk,5”thick Rl-19 5 38.50 SY 232 6,932.00 Sidewalk,5”thick,demolition and dispo Rl-20 $37.50 SY Sign,handicap RI-21 $65.28 Each Striping,per stall Rl-22 5 5.82 Each 9 52.38 Striping,thermoplastic,(for crosswalk)Rl-23 $2.38 SF Striping,4”reflectorized line RI-24 5 025 LF 155 38.75 Page 4 of 9 SUBTOTAL 20,89506 __________________ 27,736.33 _________________ Unit prices updated:02/12/02 IcCC 27A authorizes only one bond reduction.Version:11/26/08 Bond Quantities Worksheet,xlsx Report Date:7/24/2015 U,00C0UVa,a:tC0a,Ca0U,000Wa,aECCaDC0a,nCDCNa,00(N(N0a,Ca-o4-,00-CCoI—0>4-,4-,CDCVC04-,C0E0>010E04-U)‘a00U.00.2LI.U,>.aCa—0LI..00)otCaa:00CCaDCU,00‘10ElI(‘4CD0—i0,D,JCa0<CaN.(N-0UCCaCCDa,U0-CD>-U)>.U)>-U,U,a,0Ua0a,L0Co.0CDU0a:toU,a:0U,0)0U.a,‘a0Ua0Caa,U,Ca.0U0a:0zULi.D000>-U,U,>-U,>-U,U,U,U,CD>-U,U,>-CDU,U--j0CD000000000000000C(‘4000fl0CD0000tO0tOCDri,-,-CiriN-CDflO0uir-too—r-(N(Nrnnr—(NC’JU,0U,U,U,U,U,U,U,U,U,U,U,U,U,U,U,!gng.nVCaa,‘aCa.0(NCaC0-oCaU,a,U,a:00U-U,00CD(Na,0>C.1U0(‘4VCa0a:0IC,0CDa,C,Ca0->-U,00CD(‘1CoU.U0(NVCa0a:0U,00CD(Na,0CCD7-U,00CD(Na,0C-zU0¶U,Ca0a:0>-U,00CD(‘I0UxU0U,VCa0a:0U,0CCD(NU:CD>-U,00CDC’,I‘aUCD>-U,00CDa,0CCDVCa0a:0>Caa,00U,00CD(Na,0CU0VCa0a:a,C,CD>-U,C0tO(Na)0a)CoCa.00CCDVCa0a:00a>-U,0CCD(NUU0•0Ca0a:a,C,00C’s>Caa)00U,CCCD(Na,0a,‘aCa.0CCCDVC,0a:00aUa,‘aCaIVa,Caa,Ca.00U,CaCaCa000a:a:a:a,VUsVa,Ca,U=F-0000 ———.r --..;--....—S Cate ooaSiteImprovementBondQuantltyWorKsheet Existing Future Public Private Bond Reductiow Right-of-way Right of Way Improvements &Drainage Facilities Quant. Unit Price Unit Quant.I Cost Quant.I Cost Quant.I Cost Complete]Cost DRAINAGE (CPP =Corrugated Plastic Pipe,N12 or Equivalent)For Culvert prices,Average of 4’cover was assumed.Assume perforated PVC is same pnce as solid pipe. Access Road.RID 0-1 S 21.00 SY Bollards -fixed 0-2 $240.74 Each 9 2,166.66 Bollards -removable 0-3 5 452.34 Each ‘(CBs include frame and lid) CB Type I 0-4 $1257.64 Each 1 1,257.64 CS Type IL 0-5 $1433.59 Each Cs Type II,46”diameter 0-6 $2,033.57 Each for additional depth over 4 D-7 $436.52 FT CS Type II,54”diameter 0-8 $2,192.54 Each for additional depth over 4’0-9 $486.53 rr CB Type II,60”diameter 0-10 $2,351.52 Each for additional depth over 4’0-11 $536.54 FT CB Type Il,72”diameter 0-12 5 3,212.64 Each for additional depth over 4’0-13 5 692.21 FT Through-curb Inlet Framework (Add)0-14 $366.09 Each Cleanout,PVC,4”0-15 $130.55 Each 8 1,044.40 Cleanoul,PVC,6”0-16 S 174.90 Each 6 1,049.40 Cleanoul,PVC,8”0-17 $224.19 Each Culvert,PVC,C 0-18 S 8.64 LF Culvert,PVC,6”0-19 $12.60 LF Culvert.PVC,8”0-20 $13.33 LF Culvert,PVC,12”0-21 $21.77 LF Culvert,CMP,8”0-22 S 17.25 Culvert,CMP,12”0-23 S 26.45 LF Culvert,CMP,15”0-24 S 32.73 LF Culvert,CMP,18”0-25 $37.74 LF Culvert,CMP,24”0-26 5 5333 LF Culvert,CMP,30”0-27 S 71.45 LF Culvert,CMP,36”0-26 S 112.11 LF Culvert,CMP,48”0-29 S 14063 LF Culvert,CMP.60”0-30 $235.45 I.E Culvert,CMP,72”0-31 5 302.58 I.E Page6of9 SUBTOTAL ______________________________ 5,518.10 Unit prices updated:02/12)02 KCC 27A authorizes only one bond reduction.Version:11/26108 Bond Quantities Worksheet.xlsx Report Date:7/24/2015 SiteImprovementBondQuantityWorksheetExistingFuturePublicPrivateBondReductionRight-of-wayRightofWayImprovementsDRAINAGECONTINUED&DrainageFacilitiesQuant.No.UnitPriceUnitQuant.CostQuant.CostQuant.CostcompietdCostCulvert,Concrete,8”D-32$21.02LFCulvert,Concrete.12”O—33$30.05LFCulvert,Concrete.15”0-34S37.34LFCulvert,Concrete.16”0-35$44.51LFCulvert,Concrete,24”0-36$61.07LFCulvert,Concrete,30’0-37$104.18LFCulvert,Concrete,36”0-38$137.63LFCulvert,Concrete,42”0-39$156.42LFCulvert,Concrete.46”0-40$175.94LFCulvert,CPP,6’D-41$10.70LFCulvert,CPP,8”D-42$16.10LFCulvert,CPP,12”0-43$20.70LFCulvert,CPP,15”0-44$23.00LFCulvert,CPP,18”0-45$27.60LFCulvert,CPP,24”0-46$36.60LFCulvert,CPP,30”0-47$46.30LFCulvert,CPP,36”0-46S55.20LFDitching0-49S8.06CVFlowDispersalTrench(1,436base+)D-50S25.99LFFrenchDrain(3depth)0-51S22.60LFGeotextile,laidintrench,polypropylene0-5252.40SYInfiltrationpondtesting0-53$74.75HRMid-tankAccessRiser,48”dia,6’deepD-54$1.605.40EachPondOverflowSpillway0-55$14,01SYRestrictor/OilSeparator,12”D-56$1,045.19EachRestrictor/QilSeparator,15”D-57$1,095.55EachReslnctor/OiISeparator,18”0-58$1,146.16EachRiprap,placed0-59$39.08CVTankEndReducer(36’diameter)0-60$1,000.50EachTrashRack,12”0-61$211.97EachTrashRack,15”0-62$237.27EachTrashRack,18”0-63$268,89EachTrashRack,21”0-64$306.64EachPage7of9SUBTOTAL______________Unitpricesupdated:02/12/02KCC27Aauthorizesonlyonebondreduction.Version:11/26/08Rejr’’ste.7}15 ———a • S Site Fmprovêmenf Bond Qi3ntity1Athishii1 a a Cate:oo 21.00 S 28.00 S S 4.55 11.41 SUBTOTAL 2,000.00 SUBTOTAL (SUM ALL PAGES): 30%CONTINGENCY &MOBILIZATION: GRANDTOTAL: COLUMN: Unit prices updated:02/12/02 Version:11/26/08 Report Date:7/2412015 2”AC.2”top course rock &4 borrow No. 2”AC.1.5”top course &2.5’base 4”select borrow PL -1 PL-2 1.5”top course rock &2.5”base course SY PARKING LOT SURFACING PL-3 SY PL-4 SY SY Street Light Poles w/Luminaires UTILITY POLES &STREET LIGHTING Utility pole relocation costs must be accompanied bfranchbe Utility’s Cost Statement UP-2 I Each Utility Pole(s)Relocation I up-i I Lump Sum I I I I I I I I WRiTE-IN-ITEMS (Such as detention/water quality vaults.)N Area Drain WI-i $500.00 Each 1 500.00 ILZ Wl-3 CY W-4 LF FT Bollards (Flexible)WI-6 $300.00 Each 5 1,500.00 WI -7 WI -8 WI -9 -10 Existing Future Public Private Bond Reduction* Right-of-way Right of Way Improvements &Drainage Facilities Quant. Unit Price Unit Quant.I Price Quant.I Cost Quant.I Cost Complete Cost Page 8 of 9 28,881.82 8,664.55 37,546,37 B C 88,151.98 26,445.59 114597.57 U E KCC 27A authorizes only one bond reduction. Bond Quantities Worksheet,xlsx Webdate:12/0212008Originalbondcomputationspreparedby:SiteImprovementBondQuantityWorksheetMagnussonKlemencicAssociates13015thAveSeattle,WA98101ROADIMPROVEMENTS&DRAINAGEFACILITIESFINANCIALGUARANTEEREQUIREMENTSStabilization/ErosionSedimentControl(ESC)ExistingRight-of-WayImprovementsFuturePublicRightofWay&DrainageFacilitiesPrivateImprovementsCalculatedQuantityCompletedTotalRight-ofWayand/orSiteRestorationBond*/**(First$7,500ofbondshallbecash,PerformanceBondAmount(A+B+C+D)=TOTALReducedPerformanceBond*Total(A+B)PERFORMANCEBOND’AMOUNT$31.386.5$37,546.4S$114,597.6568,932.9(T)$183,530.5Minimumbond’amountis$2000BONDAMOUNTREQUIREDATRECORDINGORTEMPORARYOCCUPANCYTx0.30$55,059.1OR(T-E)$183,530.5UselargerofTx30%or(T-EPUBLICROAD&DRAINAGEMAINTENANCE/DEFECTBOND’NAMEOFPERSONPREPARINGBOND’REDUCTION:*NOTE:**NOTE:REQUIREDBONDAMOUNTSARESUBJECTTOREVIEWANDMODIFICATIONBYDDESDate:Page9of9UnitpricesUpdated:02/12/02CheckouttheODESWebsiteatwww.kingcounty.povlpermitsVersion:11/26/08jQuaEjWorLjst.xIr.Igjportj:7/j15aName:PERegistrationNumberFinnName:Address:StevenDHaluschak29564Date:27-JulTel.#:206.292.1200ProjectNo:(A)(B)(C)(D)(E)$Maintenance/DefectBond*TotalNOTE:(B+C)x025=$9,386.6Theword“bond”asusedinthisdocumentmeansafinancialguaranteeacceptabletoKingCounty.KCC27Aauthorizesrightofwayandsiterestorationbondstobecombinedwhenbotharerequired.TherestorationrequirementshallincludethetotalcostforallTESCasaminimum,notamaximum.Inaddition,correctivework,bothon-andoff-siteneedstobeincluded.Quantitiesshallreflectworsecasescenariosnotjustminimumrequirements.Forexample,ifasatmonidstreammaybedamaged,someestimatedcostsforrestorationneedstobereflectedinthisamount.The30%contingencyandmobilizationcostsarecomputedinthisquantity.PerKCC27A,totalbondamountsremainingafterreductionshallnotbeless(han30%oftheoriginalamount(T)orasrevisedbymajordesignchanges. BAPPENDIXAMAINTENANCEREQUIREMENTSFORFLOWCONTROL,CONVEYANCE,ANDWQFACILITIESNO.5—CATCHBASINSANDMANHOLESMaintenanceDefectorProblemConditionWhenMaintenanceIsNeededResultsExpectedWhenComponentMaintenanceisPerformedStructureSedimentSedimentexceeds60%ofthedepthfromtheSumpofcatchbasincontainsnobottomofthecatchbasintotheinvertofthesediment.lowestpipeintooroutofthecatchbasinoriswithin6inchesoftheinvertofthelowestpipeintooroutofthecatchbasinTrashanddebrisTrashordebrisofmorethan¼cubicfootwhichNoTrashordebrisblockingorislocatedimmediatelyinfrontofthecatchbasinpotentiallyblockingentrancetoopeningorisblockingcapacityofthecatchbasincatchbasin.bymorethan10%,TrashordebrisinthecatchbasinthatexceedsNotrashordebrisinthecatchbasin,1,thedepthfromthebottomofbasintoinvertthelowestpipeintooroutofthebasin.DeadanimalsorvegetationthatcouldgenerateNodeadanimalsorvegetationodorsthatcouldcausecomplaintsordangerouspresentwithincatchbasin,gases(e.g.,methane).Depositsofgarbageexceeding1cubicfootinNoconditionpresentwhichwouldvolume,attractorsupportthebreedingofinsectsorrodents.DamagetoframeCornerofframeextendsmorethan%inchpastFrameisevenwithcurb.andlortopslabcurbfaceintothestreet(Ifapplicable).Topslabhasholeslargerthan2squareinchesorTopslabisfreeofholesandcracks.crackswiderthan¼inch.Framenotsittingflushontopslab,i.e.,Frameissittingflushontopslab.separationofmorethan%inchoftheframefromthetopslab.CracksinwallsorCrackswiderthan¼inchandlongerthan3feet,Catchbasinissealedandbottomanyevidenceofsoilparticlesenteringcatchstructurallysound.basinthroughcracks,ormaintenancepersonjudgesthatcatchbasinisunsound.Crackswiderthan¼inchandlongerthan1footNocracksmorethan1/4inchwideatatthejointofanyinlet/outletpipeoranyevidencethejointofinlet/outletpipe.ofsoilparticlesenteringcatchbasinthroughcracks.Settlement/Catchbasinhassettledmorethan1inchorhasBasinreplacedorrepairedtodesignmisalignmentrotatedmorethan2inchesoutofalignment,standards.DamagedpipejointsCrackswiderthanYrinchatthejointoftheNocracksmorethan¼-inchwideatinlet/outletpipesoranyevidenceofsoilenteringthejointofinlet/outletpipes.thecatchbasinatthejointoftheinlet/outletpipes.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsImplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.Inlet/OutletPipeSedimentSedimentfilling20%ormoreofthepipe.Inlet/outletpipesdearofsediment.accumulationTrashanddebrisTrashanddebrisaccumulatedininlet/outletNotrashordebrisinpipes.pipes(includesfloatablesandnon-floatabies).DamagedCrackswiderthan¼-inchatthejointoftheNocracksmorethan¼-inchwideatinlet/outletpipesoranyevidenceofsoilenteringthejointoftheinlet/outletpipe.atthejointsoftheinlet/outletpipes.FigureX-la:CatchBasinsandManholesMaintenanceChecklist2009SurfaceWaterDesignManualAppendixA1/9/2009A-9 NO.5—CATCHBASINSANDMANHOLESMaintenanceDefectorProblemConditionWhenMaintenanceisNeededResultsExpectedWhenComponentMaintenanceisPerformedMetalGratesUnsafegrateopeningGratewithopeningwiderthan/Inch.Grateopeningmeetsdesign(CatchBasins)standards.TrashanddebrisTrashanddebristhatisblockingmorethan20%Gratefreeoftrashanddebris.ofgratesurface.footnotetoguidelinesfordisposalDamagedormissingGratemissingorbrokenmember(s)ofthegrate.GrateisinplaceandmeetsdesignAnyopenstructurerequiresurgentstandards.:maIntenance.ManholeCover/LidCover/lidnotinplaceCover/lidismissingoronlypartiallyinplace.Cover/lidprotectsopeningtoAnyopenstructurerequIresurgentstructure.maintenance.LockingmechanismMechanismcannotbeopenedbyoneMechanismopenswithpropertools.NotWorkingmaintenancepersonwithpropertools.Boltscannotbeseated.Self-lockingcover/liddoesnotwork.Cover/liddifficulttoOnemaintenancepersoncannotremoveCover/lidcanberemovedandRemovecover/lidafterapplying80lbs.ofliftreinstalledbyonemaintenanceperson.IIIIII1)9/2009A-102009SurfaceWaterDesignManual—AppendixAIIIIIIIIIIIII flAPPENDIXAMAINTENANCEREQUIREMENTSFORFLOWCONTROL,CONVEYANCE,ANDWQFACILITIESNO.6—CONVEYANCEPIPESANDDITCHESMaintenanceDefectorProblemConditionsWhenMaintenanceIsNeededResultsExpectedWhenComponentMaintenanceisPerformedPipesSediment&debrisAccumulatedsedimentordebristhatexceedsWalerflowsfreelythroughpipesaccumulation20%ofthediameterofthepipe.Vegetation/rootsVegetation/rootsthatreducefreemovementofWaterflowsfreelythroughpipes.waterthroughpipes.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.DamagetoprotectiveProtectivecoatingisdamaged;rustorcorrosionPiperepairedorreplaced.coatingorcorrosionisweakeningthestructuralintegrityofanypartofpipe.DamagedAnydentthatdecreasesthecrosssectionareaofPiperepairedorreplaced.pipebymorethan20%orisdeterminedtohaveweakenedstructuralintegrityofthepipe.DitchesTrashanddebrisTrashanddebrisexceeds1cubicfootper1,000Trashanddebrisclearedfromsquarefeetofditchandslopes,ditches.SedimentAccumulatedsedimentthatexceeds20%oftheDitchcleaned/Hushedofallsedimentaccumulationdesigndepth.anddebrissothatitmatchesdesign.NoxiousweedsAnynoxiousornuisancevegetationwhichmayNoxiousandnuisancevegetationconstituteahazardtoCountypersonnelortheremovedaccordingtoapplicablepublic,regulations.NodangerofnoxiousvegetationwhereCountypersonnelorthepublicmightnormallybe.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolOMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.VegetationVegetationthatreducesfreemovementofwaterWaterflawsfreelythroughditches.throughditches.ErosiondamagetoAnyerosionobservedonaditchslope.Slopesarenoteroding.slopesRockliningoutofOnelayerorlessofrockexistsabovenativesoilReplacerockstodesignstandards.placeormissing(Ifarea5squarefeetormore,anyexposednativeApplicable)soi.FigureX-lb:ConveyancePipesandDitchesMaintenanceChecklist2009SurfaceWaterDesignManualAppendixA1/9/2009A-Il S&EEGEOTECI-INICALREPORTPROPOSEDAEROSPACETRAININGCENTER300RAINIERAVEN.,RENTON.WAS&EEJOBNO.12348APRIL2O.2015IIIIIFigureR-I:GeotechnicalReport S&EESOIL&ENVIRONMENTALENGINEERS,INC.16625RedmondWay.SuiteM121.RedmondWashington98052.Soilnronrncnulcorn(425)868-5868Mr.Dtm11*me,AlASRGPannership,lnc.110UnionStreet3OOSeattle,WA98101DearDuncan:April20,2015GeotechnicalInvestigationReportProposedAerospaceTrainingCenterRenton.WAWearepleasedtopresentherewithourGeotechnicalReportforthereferencedproject.OurserviceswereauthorizedbyyouonMarch13,2015andhavebeenperformedaccordingtoourproposaldatedJanuary21,2015.Weappreciatetheopportunitytoprovideourservices.Shouldyouhaveanyquestionsregardingthecontentsofthisreportorrequireadditionalinformation,pleaseletmeknowanytime.Verytrulyyours,SOIL&ENVIRONMENTALENGINEERS,INC.C.J.Shin,Ph.D.,P.E.President,.cJbV.Z.oLCJobNo.12348S&EE ITABLEOFCONTENTSSection1.0.INTRODUCTION&EXECUTIVESUMMARY2.0SCOPEOFWORK23.0SITECONDITIONS33.1SURFACECONDITIONS33.2GEOLOGICINFORMATION33.3COALMINE,LANDSLIDE.EROSION.ANDSEISMICHAZARDS33.4SUBSURFACECONDITIONS43.0ENGINEERINGEVALUATIONSANDRECOMMENDATIONS64.1SHORINGEXCAVATIONS64.1.1SoldierPiles64.1.2Lagging83.1.3Tiebacks84.2FOUNDATIONSUPPORTS104.3LATERALEARTHPRESSURESONPERMANENTRETAININGWALLSII1.3.1SurchargeInducedLoads114.3.2SeismicInducedLateralLoads123.3.3BackfillinfrontofRetainingWalls124.3.4BackfillbehindRetainingis’altc124.3.5DrainagebehindRetainingWalls124.4STRUCTURALFILL134.5SITEPREPARATIONANDDRAINAGE134.6SLAB-ON-GRADE144.7UNDERGROUNDUTILITYCONSTRUCTIONIS4.8TEMPORARYEXCAVATIONSIS1.9SEISMICCONSIDERATIONS164.10ADDITIONALSERVICES175.0CLOSURE18FIGURE1:SITELOCATIONMAPFIGURE2:SITE&BORINGLOCATIONPLANFIGURE3A&3B:THESTRUCTURALLOADSFIGURE4:FAULTMAPFIGURE5:SECTIONAAFIGURE6:SECTIONRBFIGURE7:LATERALEARTHPRESSUREDIAGRAMSFIGURE8:CALCULATIONOFLATERALLOADSDUETOSURCHARGELOADSFIGURE9:TIEBACKGEOMETRYTABLEI:SOILPARAMETERSSUMMARYAPPENDIXA:FIELDEXPLORATIONANDLOGSOFBORINGSIIJobNo,1234BS&EEI REPORTOFGEOTECHNICALINVESTIGATIONPROPOSEDAEROSPACETRAININGCENTERRENTON,WAForSRGPARTNERSHIP,INC.1.0INTRODUCTION&EXECUTIVESUMMARYWepresentinthisreporttheresultsofourgeolechnicalstudyfortheproposedaerospacetrainingcenter.Thesiteislocatedat300RainerAvenueNorth.Renton.WA.ASiteLocationMapisshowninFigureIandaSite&ExplorationPlanisshowninFigure2.bothareincludedattheendthisreport.WeunderstandthatabuildingforAerospaceTrainingCenlerisbeingplannedatthesite.Theprojectscopeinvolvesdemolitionoftheexistingbuildingandconstructionofanewone.S&EEhaspreviouslypertbrrnedageotechnicalinvestigationforanewsinglestorybuildingforAerospaceTrainingCenterin2012.Sincethenthedesignhasbeenrevised.Thenewdesignincludesasingle-story(west)building,andasingle-story(east)building.Thelatterhasa25-foot-high.two-levelbasementdaylightingtotheeast.Weunderstandthatthenewbuildingswillbesteel-framed.Thefoundationloadsareprovidedbythestructuralengineers,MagnussonKlemencicAssociates,andshowninFigures3Aand33.S&EEhasperformedadditionalgeotechnicalinvestigationsforthenewdesign.Abriefsummaryofourgeotechnicalrecommendationsarepresentedbelow.I.Loose,randomfillvariesfromminimalto14feetinthicknessispresentthroughoutthesite,includingtheexistingslope.2.Duetospacerestraint,opencutisnotfeasibleforthebasementconstruction.Werecommendthatsoldierpileandtimberlaggingwallsbeconstructedforexcavationshoring.3.Werecommendthattheproposedbuildingsbesupportedonconventionalspreadfootingsandslabsbesoil-supported.Footingandslabsubgradesshouldbepreparedperrecommendationspresentedinthisreport.12346-rpts&EE I4.Themajorityofthesubgradesoilsatthebottomoftheeastbuildingaredensetoverydensenativesoils.However,looserandomfill,upto8feetinmaximumthickness,willbeexposedintheeasternportionofthebuildingfootprint(seeFigure6).Werecommendthatthistillberemovedbyover-excavation,andtheover-excavationbebackfilledwithstructuralfill.I5.Existingrandomfillmaybepresentatthefootingsubgradeofthewestbuilding(seeFigure6).Werecommendthatthisfillunderthenewfootingsberemovedbyover-excavation,andtheover-excavationbebackfilledwithstructuralfill.6.Existingfillmaybepresentatthegroundsurfaceinthecrawlspaceoftheexistingbuilding.Ifthefillisnotwet.sofiororganic,itcouldbecompactedinplace.Otherwiseitshouldberemovedbyover-excavation.Theover-excavationandthecrawlspaceshouldbebackfilledwithstructuralfill.Topreventbuilt-upofhydrostaticpressure,backfillwithin2feetfromtheback(‘vest)sideofthebasementwallshouldbefree-draininggranularfill(lessthan5%fines).I2.0SCOPEOFWORKThepurposeofourservicesistoprovidegeotechnicalrecommendationsforthedesignandconstructionoftheproject.Specifically,ourscopeshaveincludedthefollowings:I.Reviewofexistingboringinformation.2.Performanceofsubsurfaceinvestigationsbydrillingofthreeadditionalexplorationborings.3.Recommendationregardingtypeoffoundationsupport.4.Recommendationsregardingseismicdesign;evaluationofliquefactionpotentialandmitigationrecommendations.5.Recommendationsregardingpassive,activeandat-restearthpressuresandcoefficientoffrictionfortheresistanceoflateralloads.6.Recommendationsregardingshoringdesign.I7.Recommendationsregardingsitepreparation,anglesoftemporaryslopes,suitabilityofonsitesoilsforuseasfill,typesofsuitableimportedfill,fillplacementtechniques,andcompactionIcriteria.8.Preparationofthisgeotechnicalreportwhichcontainsasiteplan,boringlogs,adescriptionofsubsurfaceconditions,andourfindingsandrecommendations.I1fl48.rptS&EEI 3.0SITECONDITIONS3.1SURFACECONDITIONSTheprojectsiteislocatedatthesouthwestcornerofRentonMunicipalAirport.Thesiteislongandnarrowinthenorth-southdirection,andisborderedtothewestbyRainerAvenueNorthandtotheeastbyWestPerimeterRoad.ThesiteiscurrentlyoccupiedbyabuildingthatusedtobeRentonChamberofCommerceBuilding.Thereissurfaceparkingtothesouthoftheexistingbuilding,andgrasslawntothenorthofthebuilding.ThesiteforthenewwestbuildingislocatedonalevelbenchthatoverlooksRentonAirport.Thebuildingfootprintoverlapsmostoftheexistingbuilding(seeFigure2).Thisisasingle-story,wood-framedbuildingwithadavlightedcrawlspaceopeningIctheeast.Thetopographicinformationsuggeststhatthemaximumheightinthecrawlspaceisabout8feet.Weunderstandthattheexistingbuildingissupportedonspreadfootings.Thefootprintoftheneweastbuildingoverlapstheexistingonsiteslope.Themajorityofthebasementfootprintisonaslopethatdropsabout26feetto\VestPerimeterRoad.Theslopeisrelativelysteep,about75%inclinationinaverage.Atthetimeofthisreport.theslopeiscoveredwiththickvines.Theslopefaceisrelativelyeven,andthereisnoobvioussignofslopemovementssuchasslumpsorhummockyterrains.3.2GEOLOGICINFORMATIONPublishedgeologicinformation(TheGeologicMapofTheRe,ztonQuadrangle.KingCoioitvWashington.hi’B.ifMullineazLv.1965)indicatesthatthesiteareaisunderlainbyartificialfillwhichisinturnunderlainbysedimentaryrockwithfragmentsofvolcanicrock.Therocksaremainlysandstone,siltstone,andmaylocallyweatheredtoclay.3.3COALMINE,LANDSLIDE,EROSION,ANDSEISMICHAZARDSSensitiveAreasMappublishedbyKingCountyindicatesnolandslideanderosionhazardsattheprojectsite.Themapalsoshowsthatthenearestcoalminehazardareaisabout1.5milesfromthesite.1234B-rpt3s&EE IFigure4,whichisincludedattheendofthisreport,showsthatSeattleFaultistheprominentactivefaultclosesttothesite.Thefaultisacollectivetermforaseriesoffourormoreeast-west-trending,south-dippingfaultstrandsunderlyingtheSeattlearea.Thisthrustfaultzoneisapproximately2to4mileswide(north-south)andextendsfromtheKitsapPeninsulanearBremenononthewesttotheSammamishPlateaueastofLakeSammamishontheeast.Thefourfaultstrandshavebeeninterpolatedfromover-watergeophysicalsurveys(Johnson,etal.,1999)and,consequently,theexactlocationsonlandhaveyettobedeterminedorverified.Recentgeologicevidencesuggeststhatmovementonthisfaultzoneoccurredabout1,100yearsago,andtheearthquakeitproducedwasontheorderofamagnitude7.5.3.4SUBSURFACECONDITIONSThesubsurfaceconditionsatthesitewereexploredbythedrillingof3exploratoryboringsB-I,B-2,andB-3in2012and3exploratoryboringsB-4,B-5andB-6in2015.B-IandB-2wereadvancedusingatruck-mounteddrillrig.AsthegrasslawnatB-3wassoftenedbyrainatthetimeofdrillingandcouldnotsupportthedrillrig,B-3wasdrilledwithahandauger.B-4,B-SandB-6wereadvancedusingatrackmounteddrillrig.TheapproximatedexplorationlocationsareshownonFigure2.DetailsoftheexplorationandlogsareincludedinAppendixAofthisreport.ASoilClassificationChartandKeytoLogsisshownattheendoftheappendix.IIngeneral,thesubsoilsincludeloosefillovercompetentnativesoils.Basedonthevisualclassificationandtheblowcountdata,webelievethatthefillwasplacedrandomlyandwithoutcompaction.Thenativesoilsbelowthefillincludealluvialsoilsoverglaciallydepositedmaterials.FiguresSand6showsourinterpretationofthesubsurfacesoilconditionsatthesite.ThesoilparametersdevelopedbasedontheavailablegeotechnicaldataareprovidedinTableI.Detaileddescriptionofsubsoilconditionsateachboringlocationarepresentedbelow.BoringB-Iwasdrillednearthetopedgeofthesiteslopetothesouthoftheproposedbuildingsandfound13.5feetoffillsoil.Thefillconsistsofloosetomediumdensesiltysandandgravel,andisunderlainbyamediumstiffsilt.Thissiltcontainstraceorganicsandhastheappearanceofalluvialdeposits.Webelievethataswaleorcreekwasonceoccupiedthearea.Ahardsiltisfoundbelowthealluvialsoil.Thissiltbecomesveryhardbelowthedepthof24feetandtheaugerwasrefusedat25feet.I1234B-rpt4II Boring13-2wasdhllednearthesouthwesterncorneroftheproposedbuilding.Theboringencountered7feetthickofverydensesandatthegroundsurface.Thesandisunderlainbyamediumdensetodensesiltysandthathastheappearanceofanalluvialsoil.SimilartotheconditionatB-I,thealluvialsoilisunderlainbyahardsilt.3-2alsoencounteredveryhardsiltatadepthof24feetandthesiltbecamesohardthattheaugercouldnotbeadvancebeyondthedepthof25feet.Boring3-3encounteredabout10feetthickofmediumdensetodensesand.LikeB-Iand3-2,boring3-3foundalluvial-likesiltbelowtheuppersand.Thissiltisverystiffandpreventeddrillingbelowadepthof10.5feet.Boring3-4wasdrillednearthetopedgeoftheoftheeastslopetowardsnorthsideoftheproposedbuildings.Theboringencountered10.5feetoffill.Thisfillconsistsofloosesiltysandwithorganic,andisunderlainbyamediumdensetodensesandandhasanappearanceofalluvialsoil.Thealluvialsoilisunderlainbyhardsiltandverydensesandandsiltysand.BoringB-Swasdrillednearthetoeoftheslope.Theboringencountered5.5feetoffill.Thefillisunderlainbyverydensesandandhardsilt.BoringB-6isalsolocatednearthetoeoftheslopeandnearthenortheasterncorneroftheproposedbuilding.Thisboringencounteredonefootofsurficialfillunderlainbymediumdensetodensesandandyenstiffsiltthathastheappearanceofalluvialsoil.Thealluvialsoilisunderlainbyverydensesandtosiltysand.BoringsB-I.B-3,B-4.B-S.and3-6didnotencounteranygroundwatertable,however,thesandlensesinthenativesoilsarewater-bearing.BoringB-2encounteredagroundwatertableatadepthof8.5feet.Basedonthemoistureconditionsofthesubsoils.webelievethegroundwaterat3-2isaperchedgroundwatertableovertherelativelyimperviousalluvialsilt.Wefurtherbelievethatthedepthofthisperchedgroundwatertablewillvarywithseasonandprecipitation.AllsoilsamplesretrievedfromboringsB-Iand3-2werescreenedbyaPlO(photoionizationdetector)whichdidnotdetectanyorganicvapor.Basedonourexperiencewiththesubsoils,itisouropinionthatthealluvialsoilsareslightlycorrosive.1234B-rptS&EE I4.0ENGINEERINGEVALUATIONSANDRECOMMENDATIONS4.1SHORINGEXCAVATIONSITheconstructionoftheproposedbasementwillrequiretemporaryshoringatthenorth,westandsouthsidesofthebasement.Werecommendthatcantileveredandtied-backsoldierpileswithtimberlaggingbeconsideredfortheshoringwalls.Weofferthefollowingdesignandconstructionrecommendationsconcerningsoldierpiles,lagging.andtiebacks.4.1.1SoldierPilesiApplicability:Inouropinion,soldierpilescanbeusedineitheracantileveredoratied-backconfiguration(dependingonwallheight)forshoringtheproposedexcavationsidewalls.IPileEmbedments:Allsoldierpilesshouldhavesufficientembedmentbelowthefinalexcavationleveltoprovideadequate“kick-out”resistancetohorizontalloads.Werecommendaminimumembedmentof10feetbelowtheexcavationbase,or5feetbelowanyexcavationslocatedwithinabout10horizontalfeetofthepile,whicheverisgreater.However,deeperembedmentsmightbeneededtodevelopadequateverticalcapacityorpassiveresistanceatspecificlocations.DrillingConditions:Basedonourexplorations,wepredictthatmediumdensetoverydensesiltysandtosandysiltwillbeencounteredinallsoldierpileholes.Fillandmediumdensesoilscanlikelybedrilledwithoutdifficultiesexceptatthelocationsofgravelpresence.Thedensetoverydensesoilswilllikelyyieldslowdrillingratesfortheconventionalauger.AlthoughnoneofourexplorationsIencounteredcobblesorboulders,itshouldberealizedthatsuchobstructionscanexistatrandomlocationswithinthesubsoils.Also,rubblecouldbepresentwithinthefillsoils.AppliedLoads:Soldierpilesshouldbedesignedtoresistthevariousappliedloads,whichcanbeclassifiedasstaticpressures,surchargepressures,seismicpressures,andhydrostaticpressures.Ourrecommendeddesignpressuresfortheflexiblesoldierpilewalls(usingactivepressure)arepresentedgraphicallyontheenclosedLateralEarthPressureDiagrams(Figure7)andarediscussedinthefollowingparagraphs.______IStaticPressures:Staticlateralearthpressuresareassumedtoactovertheentireheightofeachsoldierpile.Fromthetopofthepiledownwardtothebottomofexcavationelevation,thisstatic1234B-rpt6I pressureshouldbeappliedoverthesoldierpilespacing;belowthislevel.thepressureneedbeappliedoveronlyonepilediameter.Forcantileverwallsorwallshavingonerowoftiebacks,werecommendusinganactiveearthpressuremodeledastheseriesofequivalentfluidunitweightsshownonFigure7.Forwallshavingtwoormorerowsoftiebacks,werecommendusinganactiveearthpressuremodeledastheuniformdistributionshownonFigure7.Inthespecialcaseofwallsthatarelocatedadjacenttoexistingstructuresorsensitiveutilities,werecommendusinganappropriateat-restearthpressureperTableI;thiswillminimizebothlateraldeflectionsofthesoldierpilesandverticalsettlementsofthebackslopesurface.uflçgc?rcss!g;Lateralearthpressuresactingonthesoldierpilesshouldbeincreasedtoaccountforanysurchargeloadingsfromanytraffic,constructionequipment,materialstockpiles,orstructuresthatarelocatedwithinahorizontaldistanceequaltothewallheight.Forsimplicity,atrafficsurchargecanbemodeledasauniformlateralpressureof62.5psfactingoverthelengthofwall.TheenclosedSurchargePressureDiagrams(Figure8)illustratemethodsofcalculatingothersurchargeloads.SeismicPressures:Lateralearthpressuresactingonpermanentsoldierpilesshouldbeincreasedtoaccountforseismicloadings,whichareappliedoverthepilesinthesamemannerasthestaticpressures.Foradesignaccelerationcoefficientof0.31andawallheightof“Hfeet,werecommendthattheseseismicloadingsbemodeledastheuniformhorizontalpressuresshownonFigure7.hydrostaticPressures:Ifadequatedrainageisprovidedbehindtheshoringwall,weexpectthathydrostaticpressureswillnotdevelop.ResistingForces.Lateralresistancecanbecomputedbyusinganappropriateallowablepassiveearthpressureactingovertheembeddedheightofeachsoldierpile,neglectingtheupper2feet.Thispassivepressureshouldbeappliedoveralateraldistanceequaltothepilespacingortwicethepilediameter,whicheverisless.Foralevelforeslope,theallowablepassivepressurecanbemodeledasthetriangulardistributionshownonFigure7.PileCapacitiesandDeflections:Appropriateside-frictionandend-bearingcapacitiescanbeusedtodeterminetotalverticalcapacitiesofsoldierpiles,whereasappropriatesubgradereactionmodulicanbeusedtoestimateverticalandlateraldeflections.Fortheportionofapileextendingintomediumdensetoverydensesiltysandtosandysilt,ourrecommendedallowablevaluesareshowninFigure7.1234B-rpt7S&EE ISubgradereactionmodulustoestimatethedefiectionsareprovidedinTable1.4rigggjgApplicability:Werecommendthatlaggingbeinstalledbetweenalladjacentsoldierpilestoreducethepotentialforsoilfailure,lossofground,andhazardousworkingconditions.LaggjllgMaterials:Inouropinion,eitherconventionalwoodentimbersorreinforcedshotcretecouldbeutilizedaslaggingatthesite.Forpermanentapplications,werecommendthatallwoodentimberlaggingbepressure-treated.LateralPressures:Duetosoilarchingeffects,temporarylaggingthatspans8feetorlessneedbedesignedforonly25percentofthelateralearthpressurepreviouslyrecommendedforsoldierpiledesign.Permanentlagging,ontheotherhand,shouldbedesignedfor50percentofthissamelateralearthpressure.Içcfl!i.g;Werecommendthatanyvoidsbehindthelaggingbebackfilled,butthebackfillImaterialshouldnotpreventgroundwaterflow.Ifnodrainageisprovidedbehindthelagging,hydrostaticpressurewouldresult.Forthisreason,sandorpeagravelprovidesaneffectivelaggingbackfillmaterial,whereasconcrete,controlled-densityfill,orotherimpermeablematerialsarenotsuitable,Drainagesystems:WerecommendthatthedrainagesystemshouldbeprovidedasshowninFigures7and9.Alllaggingbackfillmaterialshouldbeconnectedtoacontinuoushorizontalgravel-filledditchlocatedinfrontofthewall.Thiscanbeaccomplishedeitherbyextendinggravelunderthelaggingorbyprovidingweepholesthroughthelagging.Drainmat(suchasMiradrain)shouldbeinstalledtoeachlaggingbayandthencoveredwithplasticsheeting.L1liebacks4pplicabilltv:Weanticipatethattiebackanchorswillbeneededtosupportanysoldierpilewallshavinganexposedheightgreaterthanabout15to20feet.conflictsandEasements:Becausetiebackstypicallyextendabout30to60feetbehindtheexcavationface,conflictswithundergroundutilitiesandadjacentstructuresoftenarise.TheprojectI1234B-rpt8S&EEI structuralengineershouldcarefullyconsiderthelocationsofsuchobstructions,includinganyfoundationsofnearbystructures,whenlayingoutalltiebacks.Easementsmightberequiredforanytiebacksthatextendontothepropertiesbeyondthesitepropertyboundaries.InstallationMethods:Alltiebacksshouldbeinstalledinamannerthatminimizescavingandassociatedgroundsubsidence.Typically.thisinvolvesdrillingwithafull-lengthcasingorcontinuousflightauger,aswellaspumpinggroutfromthebottomofeachtiebackholewithatremie.NQ-Lic!Zone:Theanchorportionofalltiebacksmustbelocatedasufficientdistancebehindtheretainedexcavationfacetodevelopresistancewithinastablesoilmass.Werecommendthattheanchoragebeobtainedbehinda“no-loadzone”definedbyaplaneprojectedupwardata60-degreeanglefromthebaseoftheexcavationandsetbackfromtheexcavationfaceahorizontaldistanceequalto25percentofthefaceheight,asshownonFigure9.AnchorLengthandSpacJg:Theanchorportionofthetieback(thatportionbehindtheno-loadzone)shouldhaveminimumlengthof20feetandshouldbelocatedatleast10feetbelowthegroundsurface,asshownonFigure9.Toavoidinteractionsbetweenadjacenttiebacks.werecommendthataclearspacingofatleast5feetbemaintainedalongtheanchorzones.EstimatedAdhesion:Ifproperlygrouted.weestimatethatanallowableconcrete/soiladhesionvaluesasshowninFigure9beassumedfortheanchorportionofatieback.However,theactualdesignvalueswilldependontheinstallationmethodandshouldbeconfirmedbyload-testingalltiebacksinthefield.LsI4Tçtjjg;Werecommendthatalltiebacksbesubjectedtoacomprehensivetestingprogramthatwillverifytheintegrityofindividualtiebacksandprovideinformationregardingtheirlong-tenncreepcharacteristics.Werecommendthattheadhesionbeverifiedwilh133-percentprooftestsonallthetiebacks.Wealsorecommendthattwo,200-percentverificationtestsbeperformed.Priortowallconstruction,S&EEcansupplydetailsforconductingthesetests.SettlementMonitorjpg:Themovementoftheshoringwallsshouldbesurveyedbyalicensedsurveyor.Resultsshouldbetransmittedtousandstructuralengineerwithin24hoursofeachsurvey.Surveyshouldincludelateralandverticalmovementsofeveryolhersoldierpile.Surveyfrequencyshouldincludetheinitialorbaselinesurvey;onceeveryweekduringmassexcavation;andonceevery12348-rpt9 Iotherweekafterfoundationsarepoured.Wemayincreasethesurveyfrequencyatanytimeifexcessivewallmovementsarenoticed.Afterthewallfootingsarepoured,wewillevaluatethemonitoringdata,andrecommendthetimingoftheterminationofthemonitoringprogram.4.2FOUNDATIONSUPPORTSWerecommendthattheproposedbuildingsbesupportedonconventionalspreadfootings.Duetothepresenceofrandomfillintheareaoftheproposedbuildings(SeeFigures5and6),werecommendthattheexistingfillberemovedandstructuraltillbeplaced.Detailsofgeotechnicalrecommendationsforfoundationdesignandconsiructionarepresentedbelow.AllowableBearjgLoads:Footingscanbedesignedwithanallowablebearingpressureof2,500Ipoundspersquarefoot(psi).Thisvalueincludesafactorofsafetyofatleast3.andcanbeincreasedbyone-thirdforwindandseismicloads.footingConstruction:AllexistingfillmaterialunderthefootingshouldberemovedandreplacedbycompactedstructuralfillasshownonFigures5and6.ThematerialandcompactionrequirementsofstructuralfillarepresentedinSection4.4ofthisreport.Priortore-barandconcreteplacement.allfootingbearingsurfacesmustbecleanedofloosesoilcuttings.Anysoftenedandloosenedsoilencounteredatfootingsubgradeshouldbefurtherover-excavated,andtheover-excavationshouldbebackfilledwithstructuralfill.Allfootingbearingsurfacesshouldbeinspectedbyageotechnicalengineerfromourofficepriortorebarandconcreteplacement.Ourengineerwillconfirmthebearingcapacityofthesubgradesoils,andproviderecommendationsregardingover-excavation,ifnecessan’.Themajorityofsoilsatfootingsubgradearesiltyinnature.Thesoilissusceptiblelostrengthlossduetowettinganddisturbance.Assuch.werecommendthata4-inchthicklayerofcrushedrockbeinstalledatthesubgrade.Thisrockshouldbecompactedtoafirmandnon-yieldingconditionbyamechanicalcompactor.III12346-rpt10S’&ELI Settlement:Interiorcolumnfootingsdesignedinaccordancewiththeaboverecommendationsareexpectedtoexperienceapproximately1/2inchofsettlement.Continuouswallfootingsshouldexperiencesettlementofabout1/4to1/2inch.Differentialsettlementbetweenadjacentfootingsisexpectedtobeabout1/4inch.Thesettlementwilloccurrapidly,essentiallyastheloadsareapplied.LateralResistance:Lateralresistancecanbeobtainedfromthepassiveearthpressureagainstthefootingsidesandthefrictionatthecontactofthefootingbottomandbearingsoil.BothcanbeobtainedusingtheparametersprovidedinTableI.ProtcetionandMinimumWiih:Allexteriorfootingsshouldbefoundedatleast15inchesbelowtheadjacentfinishedgradetoprovideprotectionagainstfrostaction,andshouldbeatleast18inchesinwidthtofacilitateconstruction.4.3LATERALEARTHPRESSURESONPERMANENTRETAININGWALLSLateralearthpressuresonpermanentretainingwalls,undergroundvaultsorutilitytrenches/pits,andresistancetolateralloadsmaybeestimatedusingtherecommendedsoilparameterspresentedinTable1.Theat-restcaseappliestounyieldingwalls,andwouldbeappropriateforwallsthatarestructurallyrestrainedfromlateraldeflectionsuchasbasementwalls,utilitytrenchesorpits.Thepassiveearthpressureandcoefficientoffrictionincludeasafetyfactorof1.5.TheactivecaseappliestowallsthatarepermittedtorotateortranslateawayfromtheretainedsoilbyapproximatelyO.002HtoO.004H.whereHistheheightofthewall.4.3.iSurchargeInducedLoadsAdditionallateralearthpressureswillresultfromsurchargeloadsfromfloorslabsorpavementsforparkingthatarelocatedimmediatelyadjacenttothewalls.Thesurcharge-inducedlateralearthpressuresareuniformoverthedepthofthewall.Surcharge-inducedlateralpressuresfortheactivecasemaybecalculatedbymultiplyingtheappliedverticalpressure(inpsflbytheactiveearthpressurecoefficient(Ku).ThevalueofKisprovidedinTable1.Thesurchargeinducedlateralpressuresfortheat-restcasearesimilarlycalculatedusinganat-restearthpressurecoefficient(K,)providedinTable1.Forsurchargeloadsthatarenotadjacenttothe1234B-rptII Iwall,theinducedlateralearthpressurewilldependonthemagnitudeofthesurchargeandthedistancefromthewall.SuchinducedlateralloadcanbeestimatedusingtheequationsshownonFigure8.Theslope-inducedlateralearthpressurecanbeaccountedforbyincreasingtheeffectiveheightofthewallbyone-halftheslopeheight.Thetraffic-inducedlateralearthpressurecanbeaccountedforbyincreasingtheeffectivewallheightby2feet.4.3.2SeismicInducedLateralLoadsForimbalanced,seismicinducedlateralloads,thedynamicforcecanbecalculatedusingthefollowingequation.PC=14.4H,wherePC=uniformpressureinpsfandH=wallheightinfeet4.3.3BackfillinfrontofRetainingW!ihBackfillinfrontofthewallshouldbestructuralfill.ThematerialandcompactionrequirementsarepresentedinSection4.4ofthisreport.Thedensityofthestructuralfillcanbeassumedtobe130poundspercubicfeet.4.3.4BackfillbehindRetainingwallsBackfillbehindthewallshouldbefree-drainingmaterialswhicharetypicallygranularsoilscontaininglessthan5percentfines(siltandclayparticles)andnoparticlesgreaterthan4inchesindiameter.Thebackfillmaterialshouldbeplacedin6to8-inchthickhorizontalliftsandcompactedtoatleast90percentofthemaximumdensityinaccordancewithASTMD-1557testprocedures.Intheareaswherethefillwillsupportpavement,sidewalkorslabs,thetopfourf4Jfeetofthebackfillshouldbecompactedtoatleast95percentofthemaximumdensity.CaremustbetakenwhencompactingbackfilladjacenttoretainingwalIs.toavoidcreatingexcessivepressureonthewall.4.3.5QgjngebehindRetainingWallsIRigid.perforateddrainpipesshouldbeinstalledbehindretainingwalls.Drainpipesshouldbeat1234B-rpt12S&EEI least4inchesindiameter,coveredbyalayerofuniformsizedraingravelofatleast12inchesinthickness,andbeconnectedtoasuitabledischargelocation.Anadequatenumberofcleanoutsshouldbeinstalledalongthedrainlineforfuturemaintenance.4.4STRUCTURALFILLThestructuralfillmaterialsshouldmeetboththematerialandcompactionrequirementspresentedbelow.Materialqjfrements:Structuraltillshouldbefreeoforganicandfrozenmaterialandshouldconsistofharddurableparticles,suchassand,gravel,orquarry-processedstone.Theon-sitesandysoilsaresuitableforstructuralfill.Thematerialshouldbemoisture-conditionedto+1-2%fromtheiroptimummoisturecontentspriortouse.Suitableimportedstructuralfillmaterialsincludesillysand,sand,mixtureofsandandgravel(pilrun),recycledconcrete,andcrushedrock.Allstructuralfillmaterialshouldbeapprovedbyourgeotechnicalengineerpriortouse.PlacementandCompactionRequirements:Structuralfillshouldbeplacedinloosehorizontalliftsnotexceedingathicknessof6to12inches,dependingonthematerialtype.compactionequipment,andnumberofpassesmadebytheequipment.Structuralfillshouldbecompactedtoatleast95%ofthemaximumdn’densityasdeterminedusingtheASTMD-I557testprocedures.4.5SITEPREPARATIONANDDRAINAGEThewestbuildingsiteshouldbepreparedbytheremovalofallexistingfootings.slabs,undergroundutilities,andallexistingfillatthelocationsofnewfootings(atbuildinggridlinesA-4,A-5,A-6andA-7,Figure38).Anywet,soft.andorganicsoilsencounteredatthesubgradeshouldbefurtherover-excavated.Thesubgradesoilshouldthenbere-compactedtoafirmandnon-yieldingconditionusingamechanicalcompactorthatweighsatleast1,000pounds.Structuralfillcanthenbeplacedintheareasofbackfillandover-excavation.12348-rpt13s& IWerecommendthaithecrawlspaceattheexistingbuildingbefilledaftertheconstructionoftheshoringwallattheeastsideofthewestbuilding.Priortofill,thegroundsurfaceshouldbeinspectedbyanengineerfromouroffice.Any‘vet,soft,andorganicsoilsencounteredatthesubgradeshouldbeover-excavated.Thesubgradesoilshouldthenbere-compactedtoafirmandnon-yieldingconditionusingamechanicalcompactorthatweighsatleast1.000pounds.Structuralfillcanthenbeplacedintheareasoffillandover-excavation.Topreventbuilt-upofhydrostaticpressure,backfillwithin2feetfromtheback(west)sideoftheshoringwallshouldbefree-draininggranularfill(soilswithlessthan5%fines,seeFigure6)withamaximumparticlesizelessthan4inches.Theeastbuildingsiteshouldbepreparedbytheremovalofallexistingfill.Anywet,soft,ororganicsoilsattheremovalsubgradeshouldbefurtherexcavated.Thesubgradesoilshouldthenbecompactedtoafirmandnon-yieldingconditionusingamechanicalcompactorthatweighsatleast1,000pounds.Structuralfillcanthenbeplacedinthebackfillareas.ThesitesurfaceshouldbegradedsothaisurfacewaterisdirectedawayfromthestructuralIareas.Standingwatershouldnotbeallowed.Finalsitegradesshouldbeslopedawayfromthebuildingsunlesstheareaispaved,oryarddrainsinstalledtocollectsurfacerunoff.Onsiteinfiltrationofstormwaterisnotrecommendedasthewaterwouldincurnegativeimpactsonthestabilityofthesteepslope.4.6SLAB-ON-GRADEBuildingslabscanbesoilsupported.Weenvisionthatthesoilatthesubgradewillbedisturbedandloosenedbyconstructionactivitiesatthetimeofslabconstruction.Wethereforerecommendthatthesubgradebere-compactedpriortopour.Anywetandlooseareasshouldbeover-excavatedandbackfilledwithstructuralfill.Assumingthattheslabsubgradeispreparedperrecommendationspresentedabove,asubgradereactionmoduluslistedinTableIcanbeusedforslab-on-gradedesign.Werecommendthatslab-on-gradebeunderlainbya15milvaporbarrieroveratleast4-inchthickfree-draininggravel.II12348-rpt14S&EEI 4.7UNDERGROUNDUTILITYCONSTRUCTIONAllloosesoilcuttingsshouldberemovedpriortotheplacementofbeddingmaterials.Perchedgroundwaterandthuswetandloosesoilsmaybepresentatthetrenchsubgrade.Thecontractorshouldmakeeffortstominimizesubgradedisturbance,especiallyduringthelastfootofexcavation.Sometimessubgradedisturbanceinwetandloosesoilisinevitable,andsubgradestabilizationisnecessary’inordertoavoidre-compressionofthedisturbedzone.Dependingonthedegreesofsubgradedisturbance,thestabilizationmayrequirealayerofquarryspalls(2to4inchesor4to8inchessizecrushedrock).Whencompactedbyahoepac.a12to18inchesthicklayerofspallswouldsinkintothelooseandsoftsoils,interlockandeventuallyformastablesubbase.Achockerstonesuchas1-1/4”cleancrushedrockshouldbeinstalledoverthequarryspalls.Thisstoneshouldbeatleast6inchesinthicknessandshouldbecompactedtoafirmandnon-yieldingconditionbyamechanicalcompactor.Intheeventthatsoftsiltysoilsabovegroundwatertableareencounteredatsubgrades,thesubgradeshouldbeover-excavatedaminimumof6inches.Anon-wovengeotextilehavingaminimumgrabtensilestrengthof200poundsshouldbeinstalledatthebottomoftheover-excavationandtheover-excavationbackfilledwith1-1/4”minuscrushedrock.Thematerialshouldbecompactedtoafirmanon-yieldingconditionusingamechanicalcompactor.4.8TEMPORARYEXCAVATIONSTemporarycutslessthan3feetindepthcanbeslopedatIH:IV(HorizontaltoVertical)orflatter;temporary’cutsdeeperthan3feetshouldbeslopedatI.5H:IV.ThecontractorshouldnotethefplIowinrecommendations.I.Aperchedgroundwatertablemaybepresentnearthebottomofthecut.Therefore.temporarycutslopesshouldbecontinuousfromthetoptobottomwithnoverticalhankatthetoeofthecut2.Theslopefaceshouldbeprotectedfromweatherusingvisqueen.Allpermanentslopesshouldbenosteeperthan2H:IV.Watershouldnotbeallowedtoflowuncontrolledoverthetopofanyslope.Also.allpermanentslopesshouldbeseededwith1234B-rptl5s& Itheappropriatespeciesofvegetationtoreduceerosionandmaintaintheslopestability.4.9SEISMICCONSIDERATIONSIThegeotechnical-relatedparameterstobeusedforseismicdesigninaccordancewith2012IBCprovisionsareevaluatedasdescribedinSection1613.3ofthe2012IBCCode.Thespectralresponseaccelerationsforthe“Risk-TargetedMaximumConsideredEarthquake”(MCE)wereobtainedfromtheUSGSwebsiteusingalatitudeof47.487degreesandalongitudeof122.218degrees.ThevaluesforSiteClassB(rock)are:S5=I.451g(shortperiod,or0.2secondspectralresponse)=0.543g(longperiod,or1.0secondspectralresponse)ITheSiteClassisselectedusingthedefinitionsinChapter20ofASCE7-10consideringtheaverageIpropertiesofsoilsintheupper100feetofthesoilprofileatthesite.Theboringswenttoamaximumdepthof50.5feet.However,asmaterialsinterpretedtobeVeryDenseSiltySandwSandySiltwithgravel(TillLike)wereencounteredatthemaximumdepthsexplored,extrapolationoftheinformationonthelogscanbeusedtoestimatetheaveragesoilpropertiesintheupper100feet.Theresultsindicateanaveragestandardpenetrationresistance(N)ofgreaterthan50,whichcorrespondstoSiteClassC(“VeryDenseSoilandSoftRock”)inTable20.3-I(ASCE7-10).Thesitecoefficientvalues,obtainedfromSection1613.3.3ofthe2012IBC,areusedtoadjustthemappedspectralresponseaccelerationvaluestogettheadjustedspectralresponseaccelerationvaluesforthesite.TherecommendedSiteCoefficientvaluesforSiteClassCare:Fa=1.00(shortperiod,or0.2secondspectralresponse)F.=1.30(1.0secondspectralresponse)ThemostrecentUSGSEarthquakeHazardsMap(U.S.GeologicSurveywebsite.2008data)hasindicatedthatahorizontalpeakacceleration(PGA)of0.61gisappropriatefora4275-yearreturnIperiodevent,i.e.aneventhavinga2percentchanceofbeingexceededin50years.IDuetothepresenceoffirmsoilsbelowtheperchedgroundwatertable,liquefactionpotentialisnegligible.12348-rpt16S’&i!’EI 4.10ADDITIONALSERVICESWerecommendthefollowingouradditionalservicesduringthedesignandconstructionoftheproject.1.Reviewdesignplanstoconfirmthatourrecommendationsareproperlyinterpretedandutilizedinthedesign.2.Monitorshoringexcavationandtiebackinstallation.Wewillverifythatsuitabledepthsarereachedandsoilconditionsareencountered.Wewillalsodocumenttheinstallationprocedures,constructionmaterials,drillingconditions,soilconditions,pileplumbness,loadtesting,andlock-offloads.3.Monitorexcavation.Wewillconfirmthestabilityoftheexcavations,andproviderecommendationsregardingdewateringandsidewallstabilization,ifneeded.4.Monitorfoundationsubgradepreparation.Wewillconfirmthebearingcapacityofthesubgradesoils,andassistthecontractorinevaluatingtheprotectionandover-excavationrequirements.ifany.5.Monitortheplacementandcompactionofstructuralfill.Wewillconfirmthesuitabilityofthefillmaterials,andreviewthefielddensitytestresults(tobeconductedbyalestagent).6.Monitortheinstallationofsubsurfacedrains.Wewillconfirmthatthesedrainsareinstalledinaccordancewithourrecommendations.7.Monitorsitedrainageanderosioncontrol.8.Othergeotechnicalissuesdeemednecessary.1234B-rpt17S&EE I5.0CLOSURETherecommendationspresentedinthisreportareprovidedfordesignpurposesandarebasedonsoilconditionsdisclosedbyfieldobservationsandsubsurfaceexplorations.SubsurfaceinformationpresentedhereindoesnotconstituteadirectorimpliedwarrantythatthesoilconditionsbetweenIexplorationlocationscanbedirectlyinterpolatedorextrapolatedorthatsubsurfaceconditionsandsoilvariationsdifferentfromthosedisclosedbytheexplorationswillnotberevealed.Therecommendationsoutlinedinthisreportarebasedontheassumptionthatthedevelopmentplanisconsistentwiththedescriptionprovidedinthisreport.Ifthedevelopmentplanischangedorsubsurfaceconditionsdifferentfromthosedisclosedbytheexplorationareobservedduringconstruction,weshouldbeadvisedatoncesothatwecanreviewtheseconditions,andifnecessary,reconsiderourdesignrecommendations.IIIIIIIIII12348-ipt18S&EEI 0QRainierAveN—GoogieMaps4/9115,3:30PMFigure1SiteLocationMapPage1of1300RainierAveNRpr,tor’,WA93057StreetViewSearchnearby—a‘5a,a0iE80StNil[MANCEJYSewardParkNAWARE)GEORbJOWNSGrahamSt25I,.AifkSara,so‘5NOVHOLLYRAiNIERSAIdLV.5I‘AlSE€0??,St443“55572ndSta?ANSUtINLAPtoStSE75thIRAtMERBEACHStadSilts0-,ScanterStR,VrR,On-BoasvaRoPARK2gMayGreekParkS‘t.3SItIFOStS125thStVSBaa.SS?3ItttStStIdeStS135th5iOryitMawrSkywayneuronMunicipalAt’SSIB??Sl33tsdStS1]Pndstz‘52dSiRentonSEnactS?52ndSEa.aItS—5-S‘.4()CoalCreekPathNewcastleGolfClubAlNewcestle0NEPBI?SPalIttErNttrFthSiHEathStNE4Bt5?NFJ’dSrF’S’-‘S-‘t,aathSI\/Sttt55CSyin,St‘5’.-ElSEPe.5Cascade4Sr1905sr?qsndst—-SEWISEStMopdata52015Google2000ft.4WestfieldINL5.Seatrie-toconiaInteanat.onelAirporl5NiIthStCa.NS76thStSeaTactST50hall?SI‘anSloathStISWA?rtSISlOOtlISt0IactSPoothSt.5NA5196thSt1.SSI0Sa3trltntASICojIc5a. pwC,U--Iz3I“3rii0’IDLit]1N.//V\NS•I’’HllI..:z.a:0’CU1B!I:1RentonAerospaceTraining(J)—BCenterM....,M,p.dICJty.fR.st.n Lu00IH’IIIIIorHHI—-Io--‘zGDEl•19-—-———-—C!I:--EEEE1II—-IiLJIWF1______-—“I’”’I-wcvwwwwwwu)nII-IIII II—IIIIIIIIIIIIAIII‘,‘Dc‘°J(IJIrWJI‘RentonAerospaceTrainingCenter—IJIllut•MnAirIfty.fft.i..lIrfl7a- -cL:rAhjICD3TWCHK!uQADSLEVELF.KA4:1477155AE2DF2——a——a—————————————1*N.ItAGN1ISSONKIFMFNCICC’IIa)0‘Ua00h.I@1400wwb33-a37,3,.,I234167!pSECONDROORFRNAINGPLAN33-a1234FIGURE311:TheStrocIur2IIod.S203 •Figure4.MapoftheSeattleareashowingprominentactivefaultsystems.RedboxesarerecentlymappedI7.5-minutequadranglesFallCity(2007),NorthBend•(2009),Snoqualmie(coming2009),andCarnation(coming2010).Reference:USGSNRO9-057 ElevationCfeet——3MU)U,U,-3-3CU,CU,CU,0U,CU,0U,CU,CCr-,II0TIDEIII=aE1- -iia—o00aoLnDiaU,‘-a0SCc(D0I!U,di—iU)U)U,CrC030U,0U,0U,0U,0U,0U,0U, S6I-‘0fl0SSSC,C’1——000fl0fl0&flC010010010‘0‘0010C,N——0CC00C—U010Sbt0C>102U,0ini1C0n0,0C0D0C—U,‘CLUSiQ001!C0C0U,tCitU,a)-o1000oI-a0It—0CC,:0•0OCtC10Ui>-i-n0inC0C>-o=—U,C)>-inCcCU,--U,U,aDCoWE-0CLI?cjQ‘3‘3VUCtoU’000CCt•00in0a0aC=00c0>-000WEILCI)-0a;)UDT1UAOT3 DrainmatDrainmatCantileverorSingle-RowTiebackWallMultiple-RowTiebackWallNOTES:1)Forsoldierpilespacingof8feetorless,laggingshouldbedesignedtowithstand25%ofactivepressure(temporary)or50%ofactivepressure(permanent).2)SeismicpressurespertainIDpermanentwallsonly;theyneednotbeappliedTotemporarywalls.3)SurchargePressures:SeeFigureSforsurchargepressures.4)Forsimplicity,activepressurediagramhasbeendevelopedusing“composite”soilproperties.5)Factorofsafetyof1.5hasbeenappliedtopassiveresistance.6)whereappropriateauniformvertical“TrafficSurchargeloadofq=250psfshouldbeappliedtothegroundsurfacebehindthewall.“TrafficSurcharge”representstypicalconstructionvehiclesandmaterials.Heavycranesorotherunusualsurchargeloadsshouldbeevaluatedseparately.7)Minimumembedment,0=10ft.8)SeeFigure9fortiebackdetails.9)soldierPilesmaybedesignedusingthefollowingparameters:AllowableendbearingforTemporary(Permanent)cases=17.5KSF(10KSF)inM.DensetoDenseSiltySandtoSandySiltand2SKSF(15KSF)inDensetoV.DenseSiltySandtoSandySilt.AllowablesidefrictionforTemporary(Permanent)cases=0.14KSF(0.12KSF)inM.DensetoDenseSiltySandtoSandySiltand0.1SKSF(0.13KSF)inDensetoV.DenseSiltySandtoSandySilt.10)SeeFigures5&6fordescriptionofsoilstrata.11)SeeFigure9fordrainagedetails.Figure7lateralEarthPressureDiagramsPressureactsoverpilespacingNeglectpressureactsJver2pileJiameterorailespacing,whicheverisessPressureactsoveronepilediameterPressureactsOverpilespacingNeglectpressurePressureactsover2pIlediameterorpilespacing,whicheverisless2950(Static)35(11.0)(Static)2400(Seismic)62.5(H+D)(Seismic)passivepressureActivepressurePressureactsoveronepilediameter2950(Static)35(11.01(Static)2400(Seismic)62.5(H+D)(Seismic)passivepressureActivepressure———aaa——a—————————— Figure8qeference:FoundationsandEarthStructures,)esignManual7.2,DepartmentattheNavy,Mayt982CalculationofLateralLoadsDuetoSurchargeLoads NOTES:1)Anchorsmaybedesignedusingthefollowingallowablesoil-concreteadhesionforlowpressureand(highpressurepost-grout)installations:0.75KSF(1.5KSF)inFill,1.0KSF(2.0KSF)inM.DensetoDenseSiltySandtoSandySilt,and1.25KSF(2.5KSF)inDensetoV.DenseSiltySandtoSandySilt2)Verifytiebackadhesionwith133%prooftestsforeverytiebacks.Wealsorecommendedthattwo200%verificationtestsbeperformed3)Drainmat(miradrainorequivalent)shouldbeinstalledoverthelaggingface.4”diameterperforatedschedule40,pvcdrainpipeshouldbeinstalledatthebottomofwall.Thepipeandmatshouldhavehydraulicconnection(typicallythroughweepholesat5ftO.C.).4)Clean-outsshouldbeinstalledoneatevery100ftrunandateveryturn.Fiure95)SeeFigures5&6fordescriptionofsoilstrata.TiebackGeometryDrainmat(Miradrainorequivalent)IIloadzoneITieback2’x2’x2’Gravel-fillditch,HIIII10’LocateallanchorsbehindthislineMmDrainpipeIj0=10’Mmnote1below)Soldierpileembedment(D)mustbeadequatetoproviderequiredlateralandverticalcapacity——ara——————aEC—a—a— ——a a —raaaaaaaaaaaaa TABLE 1 -Summary at Recommended Soil Parameters tor Aerospace Training Center Project Granular Fill-Silty Sand/M.Dense to Dense Dense to V.Dense V.Dense ITEM Compacted Fill Gravel Silty Sand to Sandy Silt Silty Sand to Sandy Silt Silty Sand to Sandy Silt (Till Like) Tolat Unit Weight (pcI)125 120 125 126 135 Friction Angle (degrees)36 30 34 36 40 Cohesion c (psI)0 0 0 0 100 Drained Friction Angle 4?(degrees)36 30 34 36 40 Static Elastic Modulus E (ksf)1200 250 600 1500 10000 Poisson’s Ratio v 0.3 0.25 0.35 0.35 035 Active Earth Pressure Coelt K3 026 0.33 0.28 0.26 0.22 At-Rest Earth Pressure Coefi l(0.41 0.5 0.44 0.41 0.36 Passive Earth Pressure Coeft 1%2.57 2 2.36 2.57 3.07 Active Seismic Earth Pressure Coeff Kue 0.47 0.58 0.5 0.47 0.41 Passive Seismic Earth Pressure Coet!2.13 1.6 1.93 2.13 2.6 Soil-Concrete Friction Coelt.0.37 0.23 0.3 0.33 0.37 Soil Modulus Parameter (Lateral)k (pci)90 25 90 225 225 Modulus Subgrade Reaction ks (pci)225 150 175 200 225 NOTES: 1.The ks values are typical for results of tests on 30-inch diameter plate,and need not be corrected tor size or shape of loaded area. 2.Values listed above generally represent average to the slightly conservative side of average values based on interpretation of available data.Natural variability of soil conditions and parameters are expected to occur throughout the site. 3.The static E value apply to moderately large shear strain levels ot approx 1 l percent,i.e.for looting loads. 4.A safety factor of 1.5 was applied to achieve design values for K,K.,and Soil-Concrete Friction Coefficient. IAPPENDIXAFIELDEXPLORATIONANDLOGSAtotalof3soiltestborings.B-ItoB-3wereperformedin2012and3additionalboringsB-4to8-6wereperformedin2015.ThelocationsoftheseexplorationsareshowninFigure2.B-Iand8-2wereadvancedusingatruck-mounteddrillrig.Asthegrasslawnat8-3wassoftenedbyrainatthetimeofdrillingandcouldnotsupportthedrillrig,8-3wasdrilledwithahandauger.8-4,8-5and8-6wereadvancedusingatrackmounteddrillrig.SoilsamplesweretakenduringthedrillingofsoiltestboringsingeneralaccordancewithASTMD-1586.“StandardMethodforPenetrationTestandSplit-BarrelSamplingofSoils”(1.4”I.D.sampler).Thepenetrationlestinvolvesdrivingthesamplers18inchesintothegroundatthebottomoftheboreholewitha140Ipoundshammerdropping30inches.Thenumbersofblowsneededforthesamplerstopenetrateeach6inchesarerecordedandarepresentedontheboringlogs.Thesumofthenumberofblowsrequiredforthesecondandthird6inchesofpenetrationistermed“standardpenetrationresistance”ortheN-value.Incaseswhere50blowsareinsufficienttoadvanceitthrougha6inchesintervalthepenetrationafter50blowsisrecorded.Theblowcountprovidesanindicationofthedensityofthesubsoil,anditisusedinmanyempiricalgeotechnicalengineeringformulae.Thefollowingtableprovidesageneralcorrelationofblowcountwithdensityandconsistency.DENSITY(GRANULARSOILS)cQNSISnNCYLFWE-GRAJiNP$QU41N-value<4verylooseN-value<2verysoil5-10loose3-4soilI11-30mediumdense5-8mediumstiff31-50dense9-15stiff>50verydense16-30verystiff>30hardAchartshowingtheUnifiedSoilClassificationSystemisincludedattheendofthisappendix.IIIII Is3BORINGB-iCUeni:DóIhngMettd.SampleMethod:—DrlContractor:DrillDate:Elevation.S&EEbbF&14SRGPartnership,Inc.r-IDHSAadvancedbytnsck-mountDrillRigSPTsamplerdnvenby140-lbautohammerHoloceneDrillIng0ober27,201254feeL+f_FigureA-latawI.—otaQII033SuftaceConddionBarn0a10lb101887B10tracefinegravelat5feetBrownsiltyfinesand(ntistXloosetomediumdense)(probablefill)Darkbrownfinetomediumgravel,tracetreedebris(moist)(mediumdense)(probablefill)18to0,1•3—10.3—IIs10N0’S•8.715oMLBluishgraysilt,traceorganics(moistflmediumstiff)MLI0Graysilt(relativelydry)(hardposslblesiltstone)(BoringlogcontinuesonFigureA-lb)ProposedAerospaceTrainingCenter,Renton,WA IbBORINGB-iIU,(Continued)I—201MLGraysilt(relativelydryhardpossiblesikstone)1I26__JLJ-drillerreport:veryhardbelow24feetI4Augerrefusalat25feetonOctober27,2012—NogroundwaterencounteredduringdrillingiII36IIClient:SRGPartnership,Inc.Ddll,gMethod:r-lDHSAadvancedbyWick-mountDillRigSampleMethod:SPtsamplerdhvenby140-lbautohammer—DrinContractorHcloaneDrillthgDrillDate:Odober272012Elevation:54feet.1-FigureA—ibS&EE.arioProposedAerospaceTraInIngCenter,Renton,WAI II‘1815‘616H(BoringlogcontinuesonFigureA-2b)Client:OntlIngMethodSampleMethod.—OrfilContractor:DrillDate:Elevation’S&EEJ,bNol4SRGPartnership,Inc.3-lDI-ISAadvancedbyUuck-*ncuntDrillRigSPTmpIerdrtvenby140-lbautohammerHoloceneDrillingOctober27,201255feet.1-FigureA-2a-CSCDftu,.E(133I0LiC’,0II5G’Swiace:asphaltpavementBORINGB-20‘a16S2’•II•31Reddishbrovinflnesandwithsomemediumgravel(moist)(verydense)Brownsiltyfinetocoarsesandwithfinetocoarsegravel(moistverydense)Bluishgraysiltyhnetomediumsandwithfinetocoarsegravel(wetflmediumdensetodense)—100818osoda-60Darkgraysilt(moistxhardxpossilbesiftstone)5oi-r44—15—4_2o:L:LIIIProposedAerospaceTrainingCenter,Renton,WA IIBORINGB-211HI!(Continued)—20;37!BIiMLGraysilt(relativelydry)(hardpossiblesiftstone)II-I-drillerreport:veryhardbelow24feetIo5wr-Augerrefusalat25feetonOctober27,2012GroundwaterencounteredatadepthofB.5feetduringdrillingI,I,III—3°IIIIIClient:SRGPartnership,Inc.DrillingMethod:3-IDNSAadvancedbytruck-mountDrillRigSampleMethodSPTmplerdrivenby140-lbautohammerDrillContractor:HoloceneDrillingDrillDate:October27,2012Elevation:+1-FigureA-2bS&EEProposedAerospaceTrainingCenter,Renton,WAI 0—00zII3aQ0—oo0I108luhgraysift(itoweXsti—•IIII—II•I—Is:III•IIIIII—IjI(BonnglogcontinuesonFigureA-2b)Client:SRGPartnership.no.DrillingMethod:S-IDhandaugerSampleMethod:grabsample—Drillby.S&EEDrIllDate.October27,2012tlevaflow56Teat+/.FigureA-SS&EEJobNa14ProposedAerospaceTrainingCenter,Renton,WASuffaceGrasslawnBORINGB-3.00SMBrownsiltysandwithgrassroots(topsoil)spLightbrownfinesand(moist)(mediumdensetodense)Augerrefusalat105feetonOctober27.2012Nogroundwaterencounteredduringdrilling ItbIt’2C,,tcE0ouumCOccSurfaceCondthon’GrassHSMDarkbrownandgraysiltyfinesandwithorganics,occasionallayeroffinesand(rnoist)(loose)(flll)I4-blowcountat2.5to4feetinflatedbyrockatsamplerstipI•:•R’AWIIII518iA:IXIII—finesandatBtolOfeetv_JIIIIIia•il12,—IFSMBrownandgraysiltyfinetomediumsand,tracefinegravel(moist)(mediumdensetodense)10.8feetliiiIIII1Al—thin,water-bearingsandlensesat12,5feetLN15‘¶21516223•tiGraysandysiltandsiltylinesand,water-bearingsandlenses(relativelydry)(hard)I20----shellfragmentsat2OfeetI(BoringtogcontinuedonFigureA-4b)Client:SRGPartnership,nc,DrillingMethod:3-IDNSAadvancedbytrack-mouniDrillRigSampleMethod:SPTrnplerdrivenby140-lbautohammerDrillConiraclor.HoloceneDrIingDrillDate:Feb23,2015Elevation:55feet+1-FigureA4aS&EE.b?:048ProposedAerospaceTrainingCenter,Renton,WAI Client:DrillingMethodSampleMethod.DrillContractorDrillDate.ElevationSRGPadnership,Inc.F-IDHSAadvancedbytrack-mountDrillRigSPTsamplerdrivenby140-lbautohammerHoloceneDrillingFeb23.201555feetFigureA4bS&EEbI4o14BProposedAerospaceTrainingCenter,Renton,WAt2.k200a,:!‘SUU8L•°UzSurfaceConditionGrassBORINGB4(Continued)HML/SMIIIP11—201216191524•16‘18•21‘1829262182218•27•23;11-50I5Th11—30311250/512-j—36Graysandysiltandsiltyfinesandwithshellfragmentsandwater-bearingsandlenses(relativelydry)(hard)Graysiltyfinetomediumsand,littlefinegravel(moistflverydense)Grayfinesand(wet)(verydense)Grayfinesandandsiltyfinesand(dry)(verydense)MLI]Graysandysiltandsiltyfinesand(relativelydry)(hard)SMGraysiltyfinetomediumsandwithfinetocoarsegravel(moist)(verydense)(till-like)(BoringlogcontinuedonFigureA-4c)sp,SM77Sc25•sws_4011¶1iHltII’llll t£tORUOct“c-cE2U)—:II—I_60Client:SRGPartnership,Inc.DrillingMethod:T-tDHSAadvancedbytrack-mountDrillRigSampleMethod:SPIsamplerdrivenby140-lbautohammerDrillContractor:HoloceneDnllingDrillDate:Feb23,2015Elevation:55feet÷1-FigureA-AcProposedAerospaceTrainingCenter,Renton,WAI2ISMSurfaceCondition:Grassw•40—46•IIIIII‘IIIIIIIIiiliiiIIGraysiltyfinetomediumsandwithfinetocoarsegravel(moist)(verydense)(till-like)Boringcompletedatadepthof50.5feet.Nosteadygroundwatertableencounteredduringdrilling,however,mostsandlayersandlenseswerewater-bearing.IBORING6-4(Continued)iIIIIIIIIIIIII t61BORINGB-5HiSurfaceCondition:GrassIsDarkbrownandgraysiltyfinesandwithorganics(wet)(loosefihl)2183118.6—6018SwGraysiltyfinesandandsandysiltwithwater-bearingsandlenses(moist)(verydense)!f-—10I-water-bearingsandlensesat10feet-.Graysiltyfinesandwithfinetomediumgravel(drytomoist)(veiydense)(tiil-like)—III-SOICIDIGrayishbrownsilt(dry)(hard)8l7iI‘8ciuLJ-Boringcompletedatadepthof15.5feet.Nogroundwatertablewasencounteredduringdrilling,however,wetsoilwaspresentfromsurfacetoadepthof5.5feetII_Z0Client:SRGPartnership,Inc.DrillingMethod.3-IDi-iSAadvancedbytrack-mountDriRigSampleMethodSPTsamplerdrivenby140-lbautohammerDrillContractor:HoloceneDrillingDrillDate.Feb23,2015ElevatIon30Feet+1-FigureA—5S&EE.bbllol4BProposedAerospaceTrainingCenter,Renton,WA Client:DdlNngMethod.SampleMeThod:DrillContractor:DrillDate;ElevationSRGPartnership.Inc.3’-IDHSAadvancedbytrack-mountDrillRigSPTsamplerdrivenby140-lbautohammerHoloceneDrillingFeb23.201532feet+1-FigureA-6aIIS&EE.bbloisProposedAerospaceTrainingCenter,Renton,WAI0a,.kS—a,oa.-a,aC0.‘4-0-CEUa,Ut,QSurfaceConditionGrassxBORINGB-6SMDarkbrownsiltyfinesandwithorganics(wet)(loose)Chhl)SMIML—o1;15•,3lB•65lBp‘‘0‘18145,,Id18z1oPIi18-I2718‘3°—15.2510SOIC,10-sois5-,5III,IIIIIIIIIIIIIIIIIIIIIBrownfinesand(damp)(mediumdense)Graysiltwithshellfragments(drytomoistflverystiff)Brownfinesand(wet)(dense)Graysiltyfinesandandsandysiltwithshellfragmentsandsandlenses(damp)(densetoverydense)•Grayfinesand(wet)(verydense)Graysiltyfinesandandsandysift(drytomoist)(verydense)ML(80mglogcontinuedonFigureA-6b)IIIIIII(IfluI tdiBORINGB-6IM‘(Continued)S00.SudacaConditionGrass—20SM?Graysiltyfinesandandsandysilt,tracefinegravel,water-bearingsandlensesPML(drytomoist)(verydense)26‘18-2418P34liii•-Graycementedfinesand(drytomoist)(verydensexprobablesandstone)-10014”4Borngcompletedatadepthof28feetNosteadygroundwatertableencounteredduringdrilling,however,mostsandlayersandlenseswerewater-bearing.—30•:I,II—IIpIIII‘—IIII‘p‘II‘—35III‘IpIIII—•IpI,I•‘40_L-ClientSRGPartnership,Inc.DrillingMethodr-lDHSAadvancedbytrack-mountDrillRigSampleMethodSPTsamplerdrivenby140-lbautohammerDrillContraclor:HoloceneDrillingDrillDate:Feb23,2015Elevation.32feet+-FigureA-GbS&EE.tbljo12348ProposedAerospaceTrainingCenter,TRenton,WA Non-disturbedO&MSamplerUNIFIEDSOILCLASSIFICATIONSYSTEMII.1SPT(1.4IDSAMPLER)SHELBYTUBESAMPLERIIDEPTHOFGROUNDWATERDURINGEXPLORATIONS&EESOILCLASSIFICATIONCHARTANDKEYTOEXPLORATIONLOGIIMAJORDIVISIONSCLEANGRAVELSLITTLEORNOFINESIGRAVELSWITHFINES(APPRECIABLEAMOuNTOFFINESICLEANSANDS(LIfll.EORNOFINES)rSANDSWITHFINES(APPRECIABLEAMOLNIOFFINESIi{[iDESCRIPTiON0—WELL-GRADEDGRAVELSORGRAVEL-SANDMIXTURE!:LITTLEORNOFINES•GPPOORLY-GRADEDGRAVELSORGRAVEL-SANDMIXTURES,-I.jLIULEORNOFINESp71IL1-q&RAvELs,GRAVEL-SAND-SILT[1GMMIXTURES•CLAYEYGRAVELS.GRAVEL-SAND-CLAYI•MIXTURESSWWELL-GRADEDSANDORGRAVELLYSANDS,LITTLEORNOFINESPOORLY-GRADEDSANDSORGRAVELLYSANDS,LITTLEORNOFINESjSMSILTYSANDS,SAND-SILTMIXTURESSCI5L___——-.IMLINORGANICSILTS,VERYFINESANDS.ROCKFLOUR,SILTYORICLAYEYFINESANDSORCLAYEYSILTSWITHSLIGHTPLASTICITY[._JI———CLINORGAN)CCLAYSOFLOWTOMEDIUMPLASTICITY,GRAVELLYICLAYS,SANDYCLAYS,SILTYCLAYS,LEANCLAYSORGANICSILTSANDORGANICSILT-CLAYSOFLOW--OLPLASTICITYMH1INORGANICSILTS,MICACEOUSORDIATOMACEOUSFINEL SANDYORSiLTYSOiLS.ELASTiCSILTS[IIIiibAëOiãATICrrvjAT--CH--OHORGANICCLAYSOFMEDIUMTOHIGHPLAS11CIW,VORGANICSILTS-—ZPEATANDOTHERHIGHLYORGANICSOILS0-JLLJdjN00lIZoUw_-J<2w<5U>w0CD—oOo<WZ-00u_z0-_z0U0fl.s0>W0‘X00IIIIIIIIIILIL.Lu<LuU,Uo0-SILTS&CLAYSöUCUIDLIMTTLESSTHAN500ULL—----—SILTS&CLAYSILIQUIDLIMITGREATERTHAN50I HIGHLYORGANICSOILSIII