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AboutCondOfApproval•ATTACHMENT1**CONDITIONSOPPERMIT/APPROVAL**DATE:05/28/98PAGE:1ActivityNo:C9001007TYPE:G—RENEWLoóation:6900SBEACONHILL—COALMINERD.GRADING/MININGGENERALCOND’S0030-Ifworkistobesuspendedfor30ormoreconsecutivecalendardays,permitteeshallnotifytheGradingSectionpriortothecessationofworkindicatingtheirintentiontodosoandalsopriortorestartingoperations.0040—workshallbelimitedtositsclearing,grading,andinstallationoftemporaryandpermanenterosioncontrolfacilities.Permanentdrainagefacilities,roadconstruction,pavementinstallation,andrelatedworkshallbeperformedunderotherpermits.0050-WorkshallbelimitedtothatshownontheapprovedplansdatedaJo..xttOi9)0080-AllworkshallcomplywiththeprovisionsofKingCountyOrdinance3139,relatingtonoisecontrol.0091-Hoursofoperationshallbelimitedto7:00a.m.to7:00p.m.MondaythroughSunday.0120-PermitteeshallabidebytheregulationsofthePugetSoundAirPollutionControlAgency(PSAPCA).0140—Youmustcall1—800—424—5555notlessthan48hoursbeforebeginningexcavationwhereanyundergroundutilitiesmaybelocated.Failuretodosocouldmeanbearingsubstantialrepaircosts(uptothreetimesthecostofrepairstotheservice).0170-ANationalPollutantDischargeEliminationSystem(NFDES)permitforsurfacewaterdischargeand/oraTemporaryWaterQualityModificationpermitmayberequiredforthisproject.ContacttheWashingtonStateDepartmentofEcologyat(206)649—7000forinformation.0500-Acopyoftheapprovedplans,conditions,andpermitmustbeonthejobsitewheneverconstructionisinprogress.1130—Alltillshallbeclean,earthenmaterialwhichhasnorockorsimilarirreduciblematerialwithamaximumdimensiongreaterthan18inches.1150-Thetopsandthetoesofcutandfillslopesshallbesetbackfrompropertyboundariesasfarasnecessaryforsafetyoftheadjacentpropertiesandtopreventdamageresultingfromwaterrunofforslopeerosion. **CONDITIONSOFPERMIT/APPROVAL**DATE:05/28/92PAGE:2ActivityNo:C9001007TYPE:G-RENEWLocation:6900SBEACONHILL-COALMINERD.1160-Thetopsandthetoesofcutandfillslopesshallbesetbackfromstructuresasfarasisnecessaryforadequacyoffoundationsupportandtopreventdamageasaresultofwaterrunofforslopeerosion.2010-Approvalofthiserosion/sedimentationcontrol(ESC)plandoesnotconstituteanapprovalofpermanentroadordrainagedesign(e.g.sizeandlocationofroads,pipes,restric—tors,channels,retentionfacilities,utilities,etc.).2050—TheESCfacilitiesshownonthisplanaretheminimumrequirementsforanticipatedsiteconditions.Duringtheconstructionperiod,theseESCfacilitiesshallbeupgraded(e.g.additionalsumps,relocationofditchesandsiltfences,etc.)asneededforunexpectedstormevents.2110—Stabilizedconstructionentrancesandwashpadsshallbeinstalledatthebeginningofconstructionandmaintainedforthedurationoftheproject.Additionalmeasuresmayberequiredtoensurethatallpavedareasarekeptcleanforthedurationoftheproject.(RCW46.61.655.)2160-Temporarysedimentcontrolfacilitiesshallbeconstructedinaccordancewiththedetailsshown.Temporarysedimentcontrolfacilitylocationsmaybemovedtosuitfieldconditionssubjecttoapprovaloftheengineerandapplicablegovernmentalagencies.2200-Theerosionandsedimentationcontrolsystemsdepictedonthisdrawingareintendedtobeminimumrequirementstomeetanticipatedsiteconditions.Asconstructionprogressesandunexpectedorseasonalconditionsdictate,thepermitteeshouldanticipatethatmoresiltationandsedimentationcontrolfacilitieswillbenecessarytoensurecompletesiltationcontrolontheproposedsite.Duringthecourseofconstruction,itshallbetheobligationandresponsibilityofthepenitteetoaddressanynewconditionsthatmaybecreatedbyhisactivitiesandtoprovideadditionalfacilitiesoverandaboveminimumrequirementsasmaybeneededtoprotectadjacentpropertiesandwaterqualityofthereceivingdrainagesystem.4010-upontheexhaustionofmineralsormaterialsorthepermanentabandonmentofthequarryingorminingoperation,allbuildings,structures,apparatus,orappurtenancesaccessorytotheoperationwillberemovedorotherwisedismantledtothesatisfationofthedirector.4041-Alldisturbedareasshallbeplantedwithtrees,shrubs,legumes,orgrasses,andsaidflorashalbesoselectedtobeindigenoustothesurroundingarea.Thisconditionshallapplytothepitflooronly. **CONDITIONSOFPERMIT/APPROVAL**DATE:05/28/98PAGE:3ActivityNo:C9001007TYPE:G—RflJEWLocation:6900SBEACONHILL-COALMINERD.4050-Excavationsshallbereclaimedinamannerwhichwillnotallowwatertocollectandpermitstagnantwatertoremain.Suitabledrainagesystemsapprovedbythedirectorshallbeconstructedorinstalledifnaturaldrainageisnotpossible.4110-Excavationsnotmadetoawater-producingdepthshallbegradedorbac]cfilledinamannertoencouragetheusespermittedwithintheunderlyingzoneclassification.Specifically:a)Gradingorbackfillinqshallbemadewithnon-noxious,nonflammable,noncombustiblesolids;b)Thepeaksanddepressionsoftheareashallberáducedtoagentlyrollingtopographyinsubstantialconformitytothelandareaimmediatelysurroundingandwhichwillminimizeerosion.4120-Whereminingisbyopenpit,bench,orquarrymethods,reclamationshallbeperformedinthefollowingmanner:a)Slopesbetweensuccessivebenchesshallnot,inunconsolidatedmaterial,besteeperthan1and1/2foothorizontalto1footvertical,andshallbetopsoiledandrevegetated;b)Slopesbetweensuccessivebenchesinconsolidatedmaterialshallhavenoprescribedangleofslope,andnoattemptneedbemadetoresurfaceorplant;c)AllslopesinconsolidatedmaterialshallbescaledoflooserockpertherequirementsofMSHA;d)BenchwidthandspacingshallbeasshownonthereclamationplanasmaybeamendedbyKingCountyandtheWashingtonStateDepartmentofNaturalResources.5010-Roadaccesstositesdevelopedforminingorquarryingofmineralsormaterialsshallbecontrolledbymeansofagate.Asignwarningofhazardousconditions,ifsuchexist,shallbeaffixedtothegateorplacedinaconspià—uousmaimernearthegate.IfthepropertyhasanexteriorboundarylinewhichisacommonpropertylinewithdevelopedRorSclassifiedproperty,thenasolidwallorfencenotlessthan5feetinheightshallbeinstalledandmaintained.(KCC21.42.o3OA.)5021-Miningandquarryingshallbepermittedtowithin15feetofanypropertylineotherthanQ-Mzonedpropertyprovidedthatsuchminingorquarryingdoesnotimpairlateralsupportorcauseearthmovementstoextendbeyondthepropertyline.500—NoblastingshallbeallowedunlessotherwiseapprovedbytheKCFMO.Ifblastingisallpwedpursuanttothiscondition,itshallconformtoconditions5050,5060,5070,and5080. **CONDITIONS0?PERMIT/APPROVAL**DATE:05/28/98PAGE:4ActivityNo:C9001007TYPE:C—RENEWLocation:6900SBEACONHILL-COALMINERD.5050—Blastingandallotheractivitiesshallbesoconductedthatgroundvibrationsmeasurednexttostructuresorbuildingssituatedonadjacent“R”or“5”propertydonotexceedthemaximumamplitudeofgroundvibrationsasrelatedtofrequenciesofvibrationssetforthinthefollowingtable:(KCC21.47.100[A).)TableofFrequency-AmplitudeRelationsFrequencyofGroundMotionMaximumAmplitudeofGroundinCyclesperSecondMotion,inInchesupto10......-..notmorethan0.030520..........0.015330;0.0102400.007650a••0.0061600.00515060-Wheregroundfrequencyanddisplacementcharacteristicsinrelationtoknownquantitiesofdetonatedexplosiveshavebeendeterminedbyinstrumentation,usingeitheranaccelographoraseismograph,theallowablequantityofexplosivesusedinrelationtodistancemaybeestablishedbytheformula:22(50/D)CK1where0=DistancefromtheblastinfeetCQuantityofexplosivedetonatedinstantaneouslyinpoundsK=GroundtransmissionconstantTheenergyratiothusdeterminedshallnotexceed1,andallmeasurementsshallbetakenatthemostcriticallocation.(KCC2l.42.100B.)5070-Whengroundcharacteristicsforanyspecificblastinglocationhavebeendeterminedbyinstrumentation,specialexplosivesquantitylimitsforthatlocationmaybeapprovedbytheKingcountyengineer,ifsaidlimitsarecomputedandcertifiedbyaqualifiedvibrationmeasurementspecialist.(KCC21.42.100C.)5080—Intheabsenceofapprovedmethodsofinstrumentationtorestrictvibrationtothelevelsspecifiedintheforegoingtable,thequantityofexplosivesusedinblastingshallnotexceedthefollowing:Quantity-DistanceTableDistancefromtheblastareatothenearestMaximumquantityofexplosivesbuilding,neithermineorpershotforinstaneousfiringquarry—owned,normineororperdelayfordelayfiring,quarry—leasedinfeetinpounds•NormalAbnormaloverburdenoverburden(1)100SeeFri(2)340SeeFn(3)70(SeeFri(4)200420seeEn(5)78(SeeFn(6)300525100400635125 **CONDITIONSOFPERMIT/APPROVAL**DATE:05/28/98PAGE:5ActivityNo:C9001007TYPE:G—RENEWLocation:6900SBEACONUILLCOALMINERD.500800160600950200700117524580015003009001830360100022504301200.35006101400820.160012501800190020003000Footnote(1)Abnormaloverburdenisthatwhichisunusuallydeep(morethan50feettobedrock),hasawatertablenearthesurface,orissocomposedastobespongy,flexible,orreverberant.Footnote(2)100feetshallbetheminimumallowabledistancewhenapprGvedmissileprotectionmethodsareused.Footnote(3)Nomorethan10poundsofexplosivematerialshallbeplacedinanysinglecharge.Footnote(4)Nomorethan5poundsofexplosivematerialshallbeplacedinanysinglecharge.Footnote(5)Nomorethan20poundsofexplosivematerialshallbeplacedinanysinglecharge.Footnote(6)Nomorethan8poundsofexplosivematerialshallbeplacedinanysinglecharge.(FtC21.42.100D.)5100—MaximumallowabledaytimesoundpressurelevelsasmeasurednexttoàccupiedbuildingsorstructuressituatedonadjacentRorSpropertyshallnotexceedthefollowingstandardsatleast90%ofthetimebetweenthehoursof5:00a.m.and10:00p.m.SoundPressureLevelsSoundpressurelevelinFrequencybandindecibelsre0.0002cycles/secondmicrobar25—300SO300—2400...Above2400.........•..-....60Maximumallowablenighttimesoundpressurelevelsasmeasurednexttooccupiedbuildingsorstructuressituatedonadjacent“R”or“5”propertyshallnotexceedthefollowingstandardsatleast90%ofthetimebetweenthehoursof10:00p.m.and5:00a.m.SoundPressureLevelssoundpressurelevelinFrequencybandindecibelsre0.0002cycles/second4microbar25—300............70300—2400.,..........63Above2400..........55SoundpressurelevelsshallbemeasuredbyasoundlevelmeterandassociatedoctavebandfiltermanufacturedaccordingtostandardsprescribedbytheAmericanStandards **CONDITIONSOFPERMIT/APPROVALDAfl:05/28/98PAGE:6ActivityNo:C9001007TYPE:G—RENEWLocation:6900SBEACONHILL-COALNINERD.Association.(KCC21.42.050.)5102-PenitteeshallnotifyEmpireEstatesApartmentstwenty-four(24)hourspriortoanyblasting.5103-PenitteeshallsubmittoKingCo.D.D.E.S.Site0ev.Servicesforreviewallseismographreportsrecordedduringblastingoperations.Reportsmustbesubmittedwithinten(10)workingdaysafterblasting.5110-Odorsfromgasesorotherodorousmattershallnotbeemittedinquantitiesastobeunreasonablyoffensivebeyondtheexteriorpropertylines.(KCC21.42.060.)5120-Toxicgasesandmatteráhallnotbeemittedinquantitiesdamagingtohealth,toanimals,vegetationorpropertybeyondtheexteriorpropertylines.(KCC21.42.070.)5130-Dust,dirt,andflyashorairbornesolidsfromanysourceshallnotbeemittedinquantitiesastoadverselyaffectadjacentproperty.(KCC21.42.080.)5160-Fencing,whererequiredbythedirector0toprotectlire,limb,andpropertyshallbeinstalledwithlockablegateswhichmustbeclosedandlockedwhennotworkingthesite.Thefencemustbenolessthan•5feetinheight,andthefencematerialshallhavenohorizontalopeninglargerthan2inches.7020-Duringhaulingoperations,permitteeshallprovideeffectivedustcontrolmeasuresconsistingofwater,asphalttreatedbase,chemicaldustpalliatives,orequivalentme4surestocontroldustfromthisoperation.7030-TopreventtrackingofmudandrocksontoKingCountyroadsandtocomplywithRCW46.61.665(4),permitteeshalluseatechniqueapprovedbyKingCountywhichiscapableofcleaningwheels,tires,andvehicleundercarriages.7040-Permitteeshallberesponsibleforimplementingallappropriatemeasuresneeded(i.e.paving,sweepers,and/orothertechniques)tokeepstreetsandroadsusedashaulroutesforexportorimportofmaterialcleanandfreefromdebris,mud,etc.7060—Aflush.truckand/orstreetsweepershallbeoncallduringhaulingoperationstomaintaintheroadwaycleanofmudanddebris.