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Covenant for Maintenance and Inspection of Flow Control BMPS
RECORDINGREQUESTEDBYANDWHENRECORDEDMAILTO:CITYCLERK’SOFFICECITYOFRENTON1055SOUTHGRADYWAYRENTON,WA98057DECLARATIONOFCOVENANTFORMAiNTENANCEANDINSPECTIONOfFLOWCONTROLBMPSRentonSchoolDistrictGrantor:_________________________________________Grantee:CityofRentonLegalDescription:Tr8ct5_AandC,Block5,KentonHighlandsNo.3,CorrectedPlatrecordedrecordedinVolume570Plats,Pages92to98,inclusive,recordsofKingCounty,Washington,LESSthatportionlyingEasterlyofalinebeginningattheNorthwestcornerofTractBofsaidplat;thencenorth044100EasttotheNortherlylineofTractC.AdditionalLegal(s)on:_________________722780-0135AssessorsTaxParcelID#:_________________________________________________________________________TNCONSIDERATIONoftheapprovedCityofRenton(checkoneofthefollowing)L1residentialbuildingpermit,commercialbuildingpermit,]clearingandgradingpermit,subdivisionpermit,orshortsubdivisionpermitforApplicationFlieNo.LUAJSWP313002911relatingtotherealproperty(“Property’)describedabove,theGrantor(s),theowner(s)infeeofthatProperty,hereby covenants(covenant)withCityorRenton.apoliticalsubdivisionofthestateofWashington.thathe/she(they)willobserve,consentto,andabidebytheconditionsandobligationssetforthanddescribedinParagraphsIthrough8belowwithregardtotheProperty.Grantor(s)herebygrants(grant),covenants(covenant),andagrees(agree)asfollows:1.Grantor(s)orhis/her(their)successorsininterestandassigns(‘Owners”)shallretain,uphold.andprotectthestorrnwatermanagementdevices,features,pathways,limits,andrestrictions,knownasflowcontrolbestmanagementpractices(“BMPs”),shownontheapprovedFlowControlBMPSitePlanforthePropertyattachedheretoandincorporatedhereinasExhibitA.2.TheOwnersshallattheirowncost,operate.maintain,andkeepingoodrepair,theProperty’sBMPsasdescribedintheapprovedDesignandMaintenanceDetailsforeachBMPattachedheretoandincorporatedhereinasExhibitB.3.CityorRentonshallprovideatleast30dayswrittennoticetotheOwnersthatentryonthePropertyisplannedfortheinspectionoftheBMPs.Afterthe30days,theOwnersshallallowtheCityofRentontoenterforthesolepurposeofinspectingtheBMPs.InlieuofinspectionbytheCity,theOwnersmayelecttoengagealicensedcivilengineerregisteredinthestateofWashingtonwhohasexpertiseindrainagetoinspecttheBMPsandprovideawrittenreportdescribingtheircondition.Iftheengineeroptionischosen,theOwnersshallprovidewrittennoticetotheCityofRentonwithinfifteendaysofreceivingtheCity’snoticeofinspection.Within30daysofgivingthisnotice,theOwners,ortheengineeronbehalfoftheOwners,shallprovidetheengineer’sreporttotheCityofRenton.Ifthereportisnotprovidedinatimelymannerasspecifiedabove,theCityofRentonmayinspecttheBMPswithoutfurthernotice.4.IftheCitydeterminesfromitsinspection,orfromanengineer’sreportprovidedinaccordancewithParagraph3,thatmaintenance,repair,restoration,and/ormitigationworkisrequiredfortheBMPs,TheCityshallnotifytheOwnersofthespecificmaintenance,repair,restoration,and/ormitigationwork(Work)requiredunderRMC4-6-030.TheCityshallalsosetareasonabledeadlineforcompletingtheWorkorprovidinganengineer’sreportthatverifiescompletionoftheWork.Afterthedeadlinehas passed.theOwnersshallallowtheCityaccesstore-inspecttheBMPsunlessanengineer’sreporthasbeenprovidedverifyingcompletionoftheWork.IftheworkisnotcompletedproperlywithinthetimeframesetbytheCity.theCitymayinitiateanenforcementaction.FailuretoproperlymaintaintheBMPsisaviolationofRMC4-6-030andmaysubjecttheOwnerstoenforcementundertheRMC1-3,includingfinesandpenalties.5.Apartfromperformingroutinelandscapemaintenance,theOwnersareherebyrequiredtoobtainwrittenapprovalfromtheCityorRentonbeforeperforminganyalterationsormodificationstotheBMPs.6.AnynoticeorapprovalrequiredtobegivenbyonepartytotheotherundertheprovisionsofthisDeclarationofCovenantshallbeeffectiveuponpersonaldeliverytotheotherparty,orafterthree(3)daysfromthedatethatthenoticeorapprovalismailedwithdeliveryconfirmationtothecurrentaddressonrecordwitheachParty.Thepartiesshallnotifyeachotherofanychangetotheiraddresses.7.ThisDeclarationofCovenantisintendedtopromotetheefficientandeffectivemanagementofsurfacewaterdrainageontheProperty,anditshallinuretothebenefitofallthecitizensoftheCityofRentonanditssuccessorsandassigns.ThisDeclarationofCovenantshallrunwiththelandandbebindinguponGrantor(s),andGrantor’s(s’)successorsininterestandassigns.8.ThisDeclarationofCovenantmaybeterminatedbyexecutionofawrittenagreementbytheOwnersandtheCityofRentonthatisrecordedbyKingCountyinitsrealpropertyrecords. INWITNESSWHEREOF,thisDeclarationofCovenantfortheMaintenanceandInspectionofFlowControlBMPsisexecutedthis/day,20/STATEOFWASHINGTON)COUNTYOFKING)ss.Onthisdaypersonallyappearedbeforeme:,%/yic,r.,tomeknowntobetheindividual(s)describedinandwhoexecutedthewithinandforegoinginstrumentandacknowledgedthattheysignedthesameastheirfreeandvoltintaryactanddeed,fortheusesandpurposesthereinstated.Givenundermyhandandofficialsealthis/Vdayof,20/(p————————-:z;PrintednameNotaryPublicinandfortheStateofWashington.residingatGRANTOR,ownerofthePropertyNotaryPublicStateatWashingtonSANDRAMDOLPHMyAppointmentExpIresNov27,2017MyappointmentexpiresA/ec/-b—Z?Ji9t7 EXHIBIT‘A’INFlLTRAflONTRENCH(#2INFILTRATITRENCH#1INFILTRATIONTRENCH#6ANDINFILTRATIONTRENCH#3TRENCH#4NE76THSTHORIZONTALSCALERAINGARDEN“A”ANDINFILTRAfrIONENCH#5NE16THSTREETRAINGARDENPROJECTNO.210515.10JUNE22,2016STORMWATERFACILITIES1”=750FEET EXHIBITBOPERATIONSANDMAINTENANCETHISDOCUMENTCONTAINSASUMMARYOFTHEO&MREQUIREMENTSFORTHESITE’SSTORMWATERBMPS.THEOWNERSHALLMAINTAINTHISO&MDOCUMENTANDAPPENDASREQUIRED.C.2.2.6MAINTENANCEINSTRUCTIONSFORFULLINFILTRATIONIfthefullinfiltrationflowcontrolBMPisproposedforaproject,thefollowingmaintenanceandoperationinstructionsmustberecordedasanattachmenttotherequireddeclarationofcovenantandgrantofeasementperRequirement3ofSectionC.l.3.3(p.C-Is),Theintentoftheseinstructionsistoexplaintofuturepropertyowners,thepurposeofthe3MPandhowitmustbemaintainedandoperated.Theseinstructionsareintendedtobeaminimum;DDESmayrequireadditionalinstructionsbasedonsite-specificconditions.Also,astheCountygainsmoreexperiencewiththemaintenanceandoperationoftheseBM?s,fitureupdatestotheinstructionswillbepostedonKingCounty’sSwfaceWaterDesignManualwebsite.TEXTOFINSTRUCTIONSYourpropertycontainsastormwatermanagementflowcontrolBMP(bestmanagementpractice)called‘fullinfiltration,’whichwasinstalledtomitigatethestormwaterquantityandqualityimpactsofsomeoralloftheimpervioussurfacesonyourproperty.Fullinfiltrationisamethodofsoakingrunofffromimperviousarea(suchaspavedareasandroofs)intotheground.Ifproperlyinstalledandmaintained,fullinfiltrationcanmanagerunoffsothatamajorityofprecipitationeventsareabsorbed.Infiltrationdevices,suchasgravelfilledtrenches,drywells,andgroundsurfacedepressions,facilitatethisprocessbyputtingrunoffindirectcontactwiththesoilandholdingtherunofflongenoughtosoakmostofitintotheground.Tobesuccessful,thesoilconditionaroundtheinfiltrationdevicemustbereliablyabletosoakwaterintothegroundforareasonablenumberofyears.TheinfiltrationdevicesusedonyourpropertyincludethefollowingasindicatedontheflowcontrolBMPsiteplan:lgravelfilledtrenches,drywells,groundsurfacedepressions.Thesize,placement,andcompositionofthesedevicesasdepictedbytheflowcontrolBMPsiteplananddesigndetailsmustbemaintainedandmaynotbechangedwithoutwrittenapprovaleitherfromtheKingCountyWaterandLandResourcesDivisionorthroughafuturedevelopmentpermitfromKingCounty.Infiltrationdevicesmustbeinspectedannuallyandaftermajorstormeventstoidentifyandrepairanyphysicaldefects.Maintenanceandoperationofthesystemshouldfocusonensuringthesystem’sviabilitybypreventingsediment-ladenflowsfromenteringthedevice.Excessivesedimentationwillresuttinapluggedornon-functioningfacility.Iftheinfiltrationdevicehasacatchbasin,sedimentaccumulationmustberemovedonayearlybasisormorefrequentlyifnecessary.Prolongedpendingaroundoratopadevicemayindicateapluggedfacility.Ifthedevicebecomesplugged,itmustbereplaced.Keepingtheareasthatdraintoinfiltrationdeviceswellsweptandcleanwillenhancethelongevityofthesedevices.Forroofs,frequentcleaningofgutterswillreducesedimentloadstothesedevices. NO.2—INFILTRATIONFACILITIESMaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResultsExpectedWhenComponentMaintenanceisPerformedSiteTrashanddebrisAnytrashanddebriswhichexceed1cubicfootTrashanddebrisclearedfromsite.per1.000squarefeet(thisIsaboutequaltotheamountoftrashitwouldtaketofillupone.standardsizeofficegarbagecan).Ingeneral,thereshouldbenovisualevidenceofdumping.NoxiousweedsAnynoxiousornuisancevegetationwhichmayNoxiousandnuisancevegetationconstituteahazardtoCountypersonnelortheremovedaccordingtoapplicablepublic,regulations.NodangerofnoxiousvegetationwhereCountypersonnelorthepublicmightnormallybe.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.GrasslgroundcoverGrassorgroundcoverexceeds18inchesinGrassorgroundcovermowedtoaheight.heightnogreaterthan6Inches.InfiltrationPondTopRodentholesAnyevidenceofrodentholesiffacilityisactingRodentsremovedordestroyedandorSideSlopesofasadamorberm,oranyevidenceofwaterdamorbermrepaired.Dam,Bermorpipingthroughdamorbermviarodentholes,Embankment.TreegrowthTreegrowththreatensintegrityofdams,bermsorTreesdonothinderfacilityslopes,doesnotallowmaintenanceaccess,orperformanceormaintenanceinterfereswithmaintenanceactivity.Iftreesareactivities.notathreattodam,berm,orembankmentintegrityornotinterferingwithaccessormaintenance,theydonotneedtoberemoved.ErosionErodeddamageover2InchesdeepwherecauseSlopesstabilizedusingappropriateofdamageisstillpresentorwherethereIserosioncontrolmeasures.Iferosionpotentialforcontinuederosion.Anyerosionisoccurringoncompactedslope,aobservedonacompactedslope,licensedcivilengineershouldbe.consultedtoresolvesourceoferosion.SettlementAnypartofadam,bermorembankmentthathasToporsidesloperestoredtodesignsettled4incheslowerthanthedesignelevation,dimensions.Ifsettlementissignificant,alicensedcivilengineershouldbeconsultedtodeterminethecauseofthesettlement.InfiltrationPond,SedimenttftwoinchesormoresedimentispresentoraFacilityinfiltratesasdesigned.Tank,Vault,Trench,accumulationpercolationtestIndicatesfacilityisworkingatororSmallBasinlessthan90%ofdesign.StorageAreainfiltrationTankPluggedairventMyblockageofthevent.Tankorvaultfreelyvents,StructureTankbentoutofAnypartoftanklpipeisbentcutofshapemoreTankrepairedorreplacedtodesign.shapethan10%ofitsdesignshape.GapsbetweenAgapwiderthan%4nchatthejointofanytankNowaterorsoilenteringtanksections,damagedsectionsoranyevidenceofsoilparticlesenteringthroughjointsorwalls.jointsorcracksorthetankatajointorthroughawall.tearsinwallInfiltrationVaultDamagetowall,CrackswiderthanY2-inch,anyevidenceofsoilVaultissealedandstructurallyStructureframe,bottom,andlorenteringthestructurethroughcracksorqualifiedsound,topslabinspectionpersonneldeterminesthatthevaultisnotstructurallysound. NO.2—INFILTRATIONFACILITIESMaintenanceDefectorProblemConditionsWhenMaintenanceIsNeededResultsExpectedWhenComponentMaintenanceIsPerformedInlet/OutletPipesSedimentSedimentfilling20%ormoreatthepipe.Inlet/outletpipesdearofsediment.accumulationTrashanddebrisTrashanddebrisaccumulatedininlet/outletNotrashordebrisinpipes.pipes(includesfloatablesandnon-floatables).DamagedCrackswiderthanV2-inchatthejointoftheNocracksmorethanWinchwideatInlet/outletpipesoranyevidenceofsoilenteringthejointoftheinlet/outletpipe.atthejointsoftheinlet/outletpipes.AccessManholeCover/lidnotinplaceCover/lidismissingoronlypartiallyinplace.Manholeaccesscovered.Anyopenmanholerequiresimmediatemaintenance.LockingmechanismMechanismcannotbeopenedbyoneMechanismopenswithpropertools.notworkingmaintenancepersonwithpropertools.Boltscannotbeseated.Self-lockingcover/liddoesnot.work.Cover/liddifficulttoOnemaintenancepersoncannotremoveCover/lidcanberemovedandremovecover/lidafterapplying80lbsoflift,reinstalledbyonemaintenanceperson.LadderrungsunsafeMissingrungs,misalignment,rust,orcracks.Laddermeetsdesignstandards.Allowsmaintenancepersonsafeaccess.LargeaccessDamagedordifficultLargeaccessdoorsorplatescannotbeReplaceorrepairaccessdoorsoitdoors/platetoopenopened/removedusingnormalequipment.canopenedasdesigned.Gaps,doesn’tcoverLargeaccessdoorsnotflatand/oraccessDoorscloseflatandcoversaccesscompletelyopeningnotcompletelycovered.openingcompletely.LiftingRingsmissing,LiftingringsnotcapableofliftingweightofdoorLiftingringssufficienttoliftorrustedorplate.removedoororplate.InfiltrationPond,PluggedFilterbagmorethan1/2full,ReplacefilterbagorredesignTank,Vault,Trench,system.orSmallBasinFilterBagsInfiltrationPond,Sediment6”ormoreofsedimenthasaccumulated.Pre-settlingoccursasdesignedTank,Vault,Trench,accumulationorSmallBasinPresettlingPondsandVaultsInfiltrationPond,PluggedHighwaterlevelonupstreamsideoffilterRockfilterreplacedevaluateneedRockFilterremainsforextendedperiodoftimeorlittleornoforfilterandremoveifnotwaterflowsthroughfilterduringheavyrainnecessary.storms.InfiltrationPondRockmissingOnlyonelayerofrockexistsabovenativesoilinSpilIwayrestoredtodesignEmergencyOverflowareafivesquarefeetorlarger,oranyexposureofstandards.Splllwaynativesoilatthetopofoutflowpathofspillway.Rip-raponinsideslopesneednotbereplaced.TreegrowthTreegrowthimpedesfloworthreatensstabilityofTreesremoved.spillway. Sedimentexceeds60%ofthedepthfromthebottomofthecatchbasintotheinvertofthelowestpipeintooroutofthecatchbasinOtiswithin6inchesoftheInvertofthelowestpipeintooroutofThecatchbasin.Anyevidenceofcontaminantsorpollutionsuchasoil,gasoline,concreteslurriesorpaint.Sumpofcatchbasincontainsnosediment.Materialsremovedanddisposedofaccordingtoapplicabteregulations.SourcecontrolBMPsimptementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.NO.5-CATCHBASINSANDMANHOLESStructureSedimentMaintenanceDefectorProblemConditionWhenMaintenanceIsNeededResultsExpectedWhenComponentMaintenanceisPerformedTrashanddebrisTrashordebrisofmorethanY2cubicfootwhichNoTrashordebrisblockingorislocatedimmediatelyinfrontofthecatchbasinpotentiallyblockingentrancetoopeningorisblockingcapacityofthecatchbasincatchbasin.bymorethan10%.TrashordebrisInthecatchbasinthatexceedsNotrashordebrisInthecatchbasin.1/3thedepthfromthebottomofbasintoinvertthelowestpipeintooroutofthebasin.DeadanimalsorvegetationthatcouldgenerateNodeadanimalsorvegetationodorsthatcouldcausecomplaintsordangerouspresentwithincatchbasin.gases(e.g.,methane).Depositsofgarbageexceeding1cubicfootinNoconditionpresentwhichwouldvolume,attractorsupportthebreedingofinsectsorrodents.DamagetoframeCornerofframeextendsmorethan34inchpastFrameisevenwithcurb.andlortopslabcurbfaceintothestreet(Ifapplicable).Topslabhasholeslargerthan2squareInchesorTopslabisfreeofholesandcracks.crackswiderthan1Ainch.Framenotsittingflushontopslab,i.e.,Frameissittingflushontopstab.separationofmorethan%inchoftheframefromthetopslab,CracksinwallsorCrackswiderthan%inchandlongerthan3feet,Catchbasinissealedandbottomanyevidenceofsoilpartictesenteringcatchstructurallysound.basinthroughcracks,ormaintenancepersonjudgesthatcatchbasinisunsound.Crackswiderthan¼inchandlongerthan1footNocracksmorethan‘Iinchwideatatthejointofanyinlet/outletpipeoranyevidencethejointofinlet/outletpipe.ofsoilparticlesenteringcatchbasinthroughcracks.Settlement!Catchbasinhassettledmorethan7inchorhasBasinreplacedorrepairedtodesignmisalignmentrotatedmorethan2inchesoutofalignment,standards.DamagedpipejointsCrackswiderthan¼-inchatthejointoftheNocracksmorethan¼-inchwideatinlet/outletpipesoranyevidenceofsoilenteringthejointofinlet/outletpipes.thecatchbasinatthejointoftheinlet/outletpipes.ContaminantsandpollutionInlet/CutletPipeSedimentSedImentfilling20%ormoreofthepipe.Inlet/outletpipesclearofsediment.accumulationTrashanddebrisTrashanddebrisaccumulatedininlet/outletNotrashordebrisinpipes.pines(includesfloatablesandnon-floatsbias).DamagedCrackswiderthan¼-inchatthejointoftheNocracksmorethan¼-inchwideatinlet/outletpipesoranyevidenceofsoilenteringthejointoftheinlet/outletpipe.atthejointsoftheinlet/outletpipes. Cover/liddifficulttoRemoveCover/lidismissingoronlypartiallyinplace.Anyopenstructurerequiresurgentmaintenance.Onemaintenancepersoncannotremovecover/lidafterapplying80lbs.oflift.Cover/lidprotectsopeningtostructure.Cover/lidcanberemovedandreinstalledbyonemaintenanceperson.NO.5-CATCHBASINSANDMANHOLESMaintenanceDefectorProblemConditionWhenMaintenanceisNeededResultsExpectedWhenComponentMaintenanceIsPerformedMetalGratesUnsafegrateopeningGratewithopeningwiderthaninch.Grateopeningmeetsdesign(CatchBasins)standards.TrashanddebrisTrashanddebristhatisblockingmorethan20%Gratefreeoftrashanddebris.ofgratesurface.footnotetoguidelinesfordisposalDamagedormissingGratemissingorbrokenmember(s)ofthegrate.GrateIsInplaceandmeetsdesignAnyopenstructurerequiresurgentstandards.maintenance.ManholeCover/LidCovet/lidnotinplaceLockingmechanismMechanismcannotbeopenedbyoneMechanismopenswithpropertools.NotWorkingmaintenancepersonwithpropertools.Boils.cannotbeseated.Sell-lockingcover/liddoesnotwork. NO.6-CONVEYANCEPiPESANDDITCHESMaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResuitsExpectedWhenComponentMaintenanceisPerformedPipesSediment&debrisAccumulatedsedimentordebristhatexceedsWaterflowsfreelythroughpipes.accumulation20%ofthediameterofthepipe.Vegetallon!rootsVegetatlonlrootsthatreducefreemovementofWaterflowsfreelythroughpipes.waterthroughpipes.ContaminantsandAnyevidenceofcontaminantsorpoliutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedifappropriate,Nocontaminantspresentotherthanasurfaceoilfilm.DamagetoprotectiveProtectivecoatingisdamaged;rustorcorrosionPiperepairedorreplaced.coatingorcorrosionisweakeningthestructuralintegrityofanypartofpipe.DamagedAnydentthatdecreasesthecrosssectionareaofPiperepairedorreplaced.pipebymorethan20%orisdeterminedtohaveweakenedstructuralintegrityofthepipe.DitchesTrashanddebrisTrashanddebrisexceeds1cubicfootper1000Trashanddebrisclearedfromsquarefeetofditchandslopes,ditches.SedimentAccumulatedsedimentthatexceeds20%oftheDitchcleanedfflushedofallsedimentaccumulationdesigndepth.anddebrissothatitmatchesdesign.NoxiousweedsAnyoxlousornuisancevegetationwhichmayNoxiousandnuisancevegetationconstituteahazardtoCountypersonnelortheremovedaccordingtoapplicablepublic,regulations.NodangerofnoxiousvegetationwhereCountypersonnelorthepublicmightnormallybe.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentetherthanasurfaceoilfilm.VegetationVegetationthatreducesfreemovementofwaterWaterfiowsfreelythroughditches.throughditches.ErosiondamagetoAnyerosionobservedonaditchslope.Slopesarenoteroding.slopesRockliningoutofOnelayerorlessofrockexistsabovenativesoilReplacerockstodesignstandards.placeormissingfIfarea5squarefeetormore,anyexposednativeApplicable)soil. NO.8—ENERGYDISSIPATERSMaintenanceDefectorProblemConditionsWhenMaintenanceIsNeededResultsxpectedWhenComponentMaintenanceIsPerformed.SiteTrashanddebrisTrashandlotdebrisaccumulation.Dissipaterclearoftrashand/ordebris.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedif.appropriate.Nocontaminantspresentotherthanasurfaceoilfilm.RockPadMissingormovedOnlyonelayerofrockexistsabovenativesoilinRockpadpreventserosion.Rockareafivesquarefeetorlargeroranyexposureofnativesoil.DispersionTrenchPipepluggedwithAccumulatedsedimentthatexceeds20%ofthePipecleaned/flushedsothatitsedimentdesigndepth..matchesdesign.NotdischargingwaterVisualevidenceofwaterdischargingatWaterdischargesfromfeaturebyproperlyconcentratedpointsalongtrench(normalsheetflow.conditionIsasheetflow”ofwateralongtrench).Perforationsplugged.Over1/4ofperforationsinpipearepluggedwithPerforationsfreelydischargeflow.debrisorsediment.WaterflowsouttopofWaterflowsoutofdistributorcatchbasinduringNoflowdischargesfromdistributor‘distributorcatchanystormlessthanthedesignstorm,catchbasin.basin.Receivingareaover-WaterInreceivingareaiscausingorhasNodangeroflandslides.saturatedpotentialofcausInglandslideproblems.GabionsDamagedmashMeshofgabionbroken,twistedordeformedsoMeshisintact,norockmissing.structureIsweakenedorrockmayfallout.CorrosionGabionmeshshowscorrosionthroughmorethanAllgablonmeshcapableof14ofitsgage.containingrockandretainingdesignedform.CollapsedorGabionbasketshapedeformedduetoanyAllgablonbasketsintact,structuredeformedbasketscause,standsasdesigned.MissingrockAnyrockmissingthatcouldcausegabiontoNorockmissing.loosestructuralintegrity.Manhole/ChamberWornordamagedStructuredissipatingflowdeterioratestoYzorStructureisinnodangeroffailing.post,bafflesorsideoforiginalsizeoranyconcentratedwornspotchamberexceedingonesquarefootwhichwouldmakestructureunsound.Damagetowall,Crackswiderthan14-inchoranyevidenceofsoilManhole/chamberissealedandframe,bottom,and/orenteringthestucturethroughcracks,or,structurallysound.toslabmaintenanceinspectionpersonneldetermines‘.thatthestructureisnotstructurallysound.DamagedpipejointsCrackswiderthan14-InchatthejointoftheNosoilorwaterentersandnowaterinlet/outletpipesoranyevidenceofsoilenteringdischargesatthejointofinietloulletthestructureatthejointoftheinlet/outletpipes. NO.9-FENCINGMaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResultsxpectedWhenComponentMaintenanceisPerformedSiteErosionorholesErosionorholesmorethân4incheshighand12-Noaccessunderthefence.underfence18incheswidepermittingaccessthroughanopeningunderafence.WoodPosts,BoardsMissingordamagedMissingorbrokenboards,postoutofplumbbyNogapsonfenceduetomissingorandCrossMemberspartsmorethan6inchesorcrossmembersbrokenbrokenboards,postplumbtowithin1¼inches,crossmemberssound.WeakenedbyrottingAnypartshowingstructuraldeteriorationduetoAllpartsoffencearestructurally•orinsectsrottingorinsectdamagesound.DamagedortailedConcreteormetalattachmentsdeterioratedorPostfoundationcapableofpostfoundationunabletosupportposts,supportingpostsevenInstrongwind.MetalPosts,RailsDamagedpartsPostoutofplumbmorethan6Inches.Postplumbtowithin1%inches.andFabncToprailsbentmorethan6inches.ioprailfreeofbendsgreaterthan1inch.Anypartoffence(includingpost,toprails,andFenceisalignedandmeetsdesignfabric)motethan1footoutofdesignalignment,standards.Missingorloosetensionwire.TensIonwireInplaceandholdingfabric.DeterioratedpaintorPartorpartsthathavearustingorscalingStructurallyadequatepostsorpartsproteclivecoatingconditionthathasaffectedstructuraladequacy.withauniformprotectivecoating.OpeningsinfabricOpeningsinfabricaresuchthatan8-inchFabricmeshopeningswithin50%ofdiameterballcouldfitthrough.gridsize. NO.10—GATES/BOLLARDSIACCESSBARRIERSMaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResultsExpectedWhenComponentMaintenanceisPerformedChainLinkFencingDamagedormissingMissinggate.Gatesinplace,GatemembersBrokenormissinghingessuchthatgatecannotHingesintactandlubed.Gateisbeeasilyopenedandclosedbyamaintenanceworkingfreely.person.Gateisoutofplumbmorethan6inchesandGateisalignedandvertical.morethan1footoutofdesignalignment.Missingstretcherbar,stretcherbands,andties.Stretcherbar,bands,andtiesInplace.LockingmechanismLockingdevicemissing,no-functioningordoesLockingmechanismpreventsdoesnotlockgatenotlinktoallparts.openingofgate.OpeningsinfabricOpeningsInfabricaresuchthatan8-inchFabricmeshopeningswithin50%ofdiameterballcouldfitthrough.gridsize.BarGateDamagedormissingCrossbardoesnotswingopenorclosed,isCrossbarswingsfullyopenandcrossbarmissingorIsbenttowhereitdoesnotpreventclosedandpreventsvehicleaccess.vehicleaccess.LockingmechanismLockingdevicemissing,no-functioningordoesLockingmechanismpreventsdoesnotlockgatenotlinktoallparts.openingofgate.SupportpostSupportpostdoesnotholdcrossbarup.Crossbarhelduppreventingvehicledamagedaccessintofacility.BollardsDamagedormissingBollardbroken,missing,doesnotfitintosupportNoaccessformotorizedvehiclestoholeorhingebrokenormissing,getintofacility.DoesnotlockLockingassemblyorlockmissingorcannotbeNoaccessformotorizedvehiclestoattachedtolockbollardinplace.getintofacility.BouldersDislodgedBouldersnotlocatedtopreventmotorizedvehicleNoaccessformotorizedvehiclestoaccess,getIntofacility.CircumventedMotorizedvehiclesgoingaroundorbetweenNoaccessformotorizedvehiclestoboulders.getintofacility. NO.11-GROUNDS(LANDSCAPING)MaintenanceDefectorProblemConditionsWhenMaintenanceisNeededResultsxpactedWhenComponent-MaintenanceisPerformedSiteTrashorlitterAnytrashanddebriswhichexceedIcubicfootTrashanddebrisclearedfromsite,per1000squirefeet(thisisaboutequaltotheamountoftrashitwouldtaketofilluponestandardsizeofficegarbagecan).Ingeneral,thereshouldbenovisualevidenceofdumping.NoxiousweedsAnynoxiousornuisancevegetationwhichmayNoxiousandnuisancevegetationconstituteahazardtoCountypersonnelortheremovedaccordingtoapplicablepublic,regulations.NodangerofnoxiousvegetationwhereCountypersonnelorilpublicmightnormallybe.ContaminantsandAnyevidenceofcontaminantsorpollutionsuchMaterialsremovedanddisposedofpollutionasoil,gasoline,concreteslurriesorpaint,accordingtoapplicableregulations.SourcecontrolBMPsimplementedifappropriate.Nocontaminantspresentotherthanasurfaceoilfilm.GrasslgroundcoverGrassorgroundcoverexceeds18inchesinGrassorgroundcovermowedtoaheight.heightnogreaterthan6inches.TreesandShrubsHazard.AnytreeorlimbofatreeidentifiedashavingaNohazardtreesinfacility.potentialtofallandcausepropertydamageorthreatenhumanlife.AhazardtreeIdentifiedbyaqualifiedarboristmustberemovedassoonaspossible.DamagedLimbsorpartsoftreesorshrubsthataresplitorTreesandshrubswithlessthan5%brokenwhichaffectmorethan25%ofthetotaloftotalfoliagewithsplitorbrokenfoliageofthetreeorshrub.limbs.TreesorshrubsthathavebeenblowndownorNoblowndownvegetationorknockedover,knockedovervegetation.Treesorshrubsfreeofinjury.TreesorshrubswhicharenotadequatelyTreeorshrubinplaceandsupportedorareleaningover,causingexposureadequatelysupported:deadorofthetools.diseasedtreesremoved. C.2.5.3MAINTENANCEINSTRUCTIONSFORARAINGARDENIftheraingardenflowcontrolBMPisproposedforaproject,thefollowingmaintenanceandoperationinstructionsmustberecordedasanattachmenttotherequireddeclarationofcovenantandgrantofeasementperRequirement3ofSectionC.1.3.3(p.C-1$).Theintentoftheseinstructionsistoexplaintofuturepropertyowners,thepurposeoftheBMPandhowitmustbemaintainedandoperated.Theseinstructionsareintendedtobeaminimum;ODESmayrequireadditionalinstructionsbasedonsite-specificconditions.Also,astheCountygainsmoreexperiencewiththemaintenanceandoperationoftheseBMPs,futureupdatestotheinstructionswillbepostedonKingCounty’sSurfaceWaterDesignManualwebsite.TEXTOFINSTRUCTIONSYourpropertycontainsastormwatermanagementflowcontrolBMP(bestmanagementpractice)calleda“raingarden,”whichwasinstalledtomitigatethestormwaterquantityandqualityimpactsofsomeoralloftheimperviousornon-nativepervioussurfacesonyourproperty.Raingardens,alsoknownas‘bioretenhion,’arevegetatedcloseddepressionsorpondsthatretainandfllterstormwaterfromanareaofimpervioussurfaceornon-nativepervioussurface,Thesoilintheraingardenhasbeenenhancedtoencourageandsupportvigorousplantgrowththatservestofilterthewaterandsustaininfiltrationcapacity.Dependingonsoilconditions,raingardensmayhavewaterinthemthroughoutthewetseasonandmayoverflowduringmajorstormevents.Thesize,placement,anddesignoftheraingardenasdepictedbytheflowcontrolBMPsiteplananddesigndetailsmustbemaintainedandmaynotbechangedwithoutwrittenapprovaleitherfromtheKingCountyWaterandLandResourcesDivisionorthroughafuturedevelopmentpermitfromKingCounty.Plantmaterialsmaybechangedtosuittastes,butchemicalfertilizersandpesticidesmustnotbeused.Mulchmaybeaddedandadditionalcompostshouldbeworkedintothesoilovertime.Raingardensmustbeinspectedannuallyforphysicaldefects.Aftermajorstormevents,thesystemshouldbecheckedtoseethattheoverflowsystemisworkingproperly.Iferosionchannelsorbarespotsareevident,theyshouldbestabilizedwithsoil,plantmaterial,mulch,orlandscaperock.Asupplementalwateringprogrammaybeneededthefirstyeartoensurethelong-termsurvivaloftheraingarden’svegetation.Vegetationshouldbemaintainedasfollows:1)replacealldeadvegetationassoonaspossible;2)removefallenleavesanddebrisasneeded;3)removeallnoxiousvegetationwhendiscovered;4)manuallyweedwithoutherbicidesorpesticides;5)duringdroughtconditions,usemulchtopreventexcesssolardamageandwaterloss. C.2.6.7MAINTENANCEINSTRUCTIONSFORPERMEABLEPAVEMENTIfthepermeablepavementflowcontrol3MPisproposedforaproject,thefollowingmaintenanceandoperationinstructions,plusanyprovidedbythemanufacturerorinstaller,mustberecordedasanattacimienttotherequireddeclarationofcovenantandgrantofeasementperRequirement3ofSectionC.l.3.3(p.C-18).Theintentoftheseinstructionsistoexplaintofuturepropertyowners,thepurposeoftheBMPandhowitmustbemaintainedandoperated.Theseinstructionsareintendedtobeaminimum;DDESmayrequireadditionalinstructionsbasedonsite-specificconditionsormanufacturer’srecommendations.Also,astheCountygainsmoreexperiencewiththemaintenanceandoperationoftheseBMPs,futureupdatestotheseinstructionswillbepostedonKingCounty’sSurfaceWaterDesignManualwebsite.TEXTOFINSTRUCTIONSFORNON-VEGETATEDPERMEABLEPAVEMENTYourpropertycontainsastormwatermanagementhowcontrolBMP(bestmanagementpractice)calledpermeablepavementwhichwasinstalledtominimizethestormwaterquantityandqualityimpactsofsomeorallofthepavedsUrfacesonyourproperty.Permeablepavementsreducetheamountofrainfallthatbecomesrunoffbyallowingwatertoseepthroughthepavementintoafree-draininggravelorsandbed,whereitcanbeinfiltratedintotheground,Thetype(s)ofpermeablepavementusedonyourpropertyis:Uporousconcrete,Uporousasphalticconcrete,Upermeablepayers,Umodulargridpavement.TheareacoveredbypermeablepavementasdepictedbytheflowcontrolBMPsiteplananddesigndetailsmustbemaintainedaspermeablepavementandmaynotbechangedwithoutwrittenapprovaleitherfromtheKingCountyWaterandLandResourcesDivisionorthroughafuturedevelopmentpermitfromKingCounty.Permeablepavementsmustbeinspectedafteronemajorstormeachyeartomakesureitisworkingproperly.Prolongedpondingorstandingwateronthepavementsurfaceisasignthatthesystemisdefectiveandmayneedtobereplaced.Ifthisoccurs,contactthepavementinstallerortheKingCountyWaterandLandResourcesDivisionforfurtherinstructions.Atypicalpermeablepavementsystemhasalifeexpectancyofapproximately25-yeats.Tohelpextendtheusefullifeofthesystem,thesurfaceofthepermeablepavementshouldbekeptcleanandfreeofleaves,debris,andsedimentthroughregularsweepingorvacuumsweeping.Theownerisresponsiblefortherepairofallruts,deformation,and/orbrokenpavingunits.TEXTOFINSTRUCTIONSFORVEGETATEDPERMEABLEPAVEMENTYourpropertycontainsastormwatermanagementflowcontrolBMP(bestmanagementpractice)called“grassedmodulargridpavement,”whichwasinstalledtominimizethestormwaterquantityandqualityimpactsofsomeorallofthepavedsurfacesonyourproperty.Grassedmodulargridpavementhastherunoffcharacteristicsofalawnwhileprovidingtheweight-bearingcapacityofconcretepavement.Thegrassedsurfacenotonlyminimizesrunoffquantity,ithelpstofilterpollutantsgeneratingbyvehicularuseofthesurface.ThecompositionandareaofgrassedmodulargridpavementasdepictedbytheflowcontrolBMPsiteplananddesigndetailsmustbemaintainedandmaynotbechangedwithoutwrittenapprovaleitherfromtheKingCountyWaterandLandResourcesDivisionorthroughafuturedevelopmentpermitfromKingCounty.Grassedmodulargridpavementmustbeinspectedafteronemajorstormeachyeartomakesureitisworkingproperly.Prolongedpondingorstandingwateronthepavementsurfaceisasignthatthesystemdefectiveandmayneedtobereplaced.Ifthisoccurs,contactthepavementinstallerortheKingCountyWaterandLandResourcesDivisionforfurtherinstructions.Thegrassedsurfaceofthepavementmustberegularlymowedandmaintainedinagoodcondition.Barespotsmustbereplantedinthespringorfall.