Attachment F Mitigation Monitoring and Reporting Program · Water Board X 3.4 Geology and Soils...

Attachment F

Mitigation Monitoring and Reporting Program

Comprehensive Groundwater Cleanup Strategies for Historical Chromium Discharges from

PG&E’s Hinkley Compressor Station

(SCH# 2008011097)

California Regional Water Quality Control Board, Lahontan Region

March 2014

ICFInternational.2014.MitigationMonitoringandReportingProgram.ComprehensiveGroundwaterCleanupStrategyforHistoricalChromiumDischargesfromPG&E’sHinkleyCompressorStation,SanBernardinoCounty.March.(SCH#2008011097)(ICF00122.11.)SanFrancisco,CA.PreparedforCaliforniaRegionalWaterQualityControlBoard,LahontanRegion,SouthLakeTahoe,CA.

Comprehensive Groundwater Cleanup Strategy for Historical Chromium Discharges from PG&E’s Hinkley Compressor Station

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Contents

Page

Introduction ..................................................................................................................... 1

Summary of Mitigation Measures .................................................................................. 2

Mitigation Measure Worksheets .................................................................................. 12

References ................................................................................................................... 102

Acronyms and Abbreviations .................................................................................... 104

Appendix A Monitoring and Reporting Forms

Appendix B Summary Tables with Impacts, Alternatives, and Mitigation Measures


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Introduction

TheCaliforniaRegionalWaterQualityControlBoard,LahontanRegion(WaterBoard),asLeadAgencyundertheCaliforniaEnvironmentalQualityAct(CEQA)andStateCEQAGuidelines,haspreparedandcertifiedtheFinalEnvironmentalImpactReport(EIR)fortheComprehensiveGroundwaterCleanupStrategyforHistoricalChromiumDischargesfromPacificGas&ElectricCompany’s(PG&E’s)HinkleyCompressorStation(proposedproject)(SCH#2008011097).WhenaleadagencyapprovesaprojectandmakesfindingsonsignificanteffectsidentifiedinanEIR,itmustalsoadoptaprogramforreportingormonitoringmitigationmeasuresthatwereadoptedormadeconditionsofprojectapproval(PublicResourcesCode[PRC]Section21081.6[a];StateCEQAGuidelinesSections15091[d],15097).

CEQArequiresthemonitoringorreportingprogramtoensureimplementationofthemitigationmeasures,butCEQAdoesnotdefinetheterms“reporting”or“monitoring”anddoesnotspecifyhowthisshouldbedone,insteadleavingtheformat,contents,andcomplexityoftheprogramtotheinterpretationoftheleadagency.

Asleadagency,theWaterBoardhasdevelopedthisMitigationMonitoringandReportingProgram(MMRP)toensureimplementationofthemitigationmeasures.“Monitoring”istheongoingprocessofprojectoversighttoensurethemitigationmeasuresareimplemented,and“reporting”isthewrittenreviewofmitigationactivities.Tofacilitatemitigationmonitoringandreporting,thisMMRPincludesaworksheetforeachmitigationmeasurethatidentifies:1)Mitigationmeasure,2)Implementationtiming,3)Implementationresponsibility,4)Monitoringresponsibility,5)Monitoringrequirements,6)Frequencyofmonitoringorreporting,7)Standardsforcompletionorcompliance,and8)Agencyverificationofcompliance(“signoff”).AppendixAincludesaMonitoringandReportingRecordform,aswellasacompletedexample,wheremonitoringandreportingnotescanbedocumented.Somemitigationmeasuresrequireseparate,stand‐alonememorandaorreportsofverification,inwhichcasetheagency’sreceiptofthosereportscanbedocumented.

ThisMMRPincludesallmeasuresrequiredtoreducepotentiallysignificantenvironmentalimpactstoaless‐than‐significantlevel,aswellasmeasuresthatreduceimpactsbutnotnecessarilytoaless‐than‐significantlevel.

QuestionsshouldbedirectedtoAnneHolden,EIRProjectManager.

LahontanWaterBoard2501LakeTahoeBoulevard,SouthLakeTahoe,CA96150

Phone:530‐542‐5450Email:[email protected]

California Regional Water Quality Control Board, Lahontan Region Mitigation Monitoring and Reporting Program


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Summary of Mitigation Measures

Themitigationmeasures,implementationtiming,andresponsiblepartiesaresummarizedinTable1.Additionally,AppendixBincludessummarytableswiththemitigationmeasures,theimpactstheyareaddressing,andtheapplicableprojectalternatives.

ThemitigationmeasuresintheTable1,AppendixB,andtheMitigationMeasureWorksheetsarepresentedbyresourceareaasfollows,usingthesamenumericalorderaspresentedintheFinalEIR(VolumeII).

3.1WaterResourcesandWaterQuality

3.2LandUse,Agriculture,PopulationandHousing

3.3HazardsandHazardousMaterials

3.4GeologyandSoils

3.5AirQualityandClimateChange

3.6Noise

3.7BiologicalResources

3.8CulturalResources

3.9UtilitiesandPublicServices(nomitigationmeasures)

3.10TransportationandTraffic

3.11Aesthetics

3.12Socioeconomics



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Table 1. Summary of Mitigation Measures with Responsible Parties

MitigationMeasure TimingImplementationResponsibility1

MonitoringResponsibility

ApplicableRemedialAction2

ALL IRZ AU ATF FWI

3.1WaterResourcesandWaterQuality

WTR‐MM‐1:PurchaseofWaterRightstoComplywithBasinAdjudication

Annually PG&E WaterBoard X

WTR‐MM‐2:MitigationProgramforWaterSupplyWellsAffectedbyRemedialActivities,includingImpactsDuetoChromiumPlumeExpansion,RemediationByproductsandGroundwaterDrawdown

Duringoperation

PG&E WaterBoard X X

WTR‐MM‐2a:MitigationProgramforWaterSupplyWellsAffectedbytheChromiumPlumeExpansionduetoRemedialActivities

Duringoperation

PG&E WaterBoard X X

WTR‐MM‐2b:WaterSupplyProgramforWaterSupplyWellsAffectedbyRemedialActivityByproducts

Oneyearpriortooperationandduringoperation

PG&E WaterBoard X X

WTR‐MM‐2c:WaterSupplyProgramforWellsAffectedbyGroundwaterDrawdownduetoRemedialActivities

Oneyearpriortooperationandduringoperation

PG&E WaterBoard X

WTR‐MM‐3:IncorporateMeasurestoPrevent,ReduceandControlPotentialTemporaryLocalizedChromiumPlumeBulgingIntoOverallPlumeControlandMonitoring

Priortoissuanceofpermits

WaterBoardandPG&E

WaterBoard X

WTR‐MM‐4:MitigationProgramforRestoringtheHinkleyAquiferAffectedbyRemedialActivitiesforBeneficialUses

Nolaterthan10yearspriorconclusionofremediationproject

PG&E WaterBoard X



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ALL IRZ AU ATF FWI

WTR‐MM‐5:InvestigateandMonitorTotalDissolvedSolids,Uranium,andOtherRadionuclideLevelsinrelationtoAgriculturalTreatmentandTakeContingencyActions


WaterBoardandPG&E

WaterBoard X

WTR‐MM‐6:MonitorNitrateLevelsandManageAgriculturalTreatmenttoAvoidSignificantIncreasesinNitrateLevelsandProvideAlternativeWaterSuppliesAsNeeded


WaterBoardandPG&E

WaterBoard X

WTR‐MM‐7:ConstructionandOperationofAdditionalExtractionWellstoControlCarbonAmendmentIn‐situByproductPlumes


WaterBoardandPG&E

WaterBoard X

WTR‐MM‐8:EnsureFreshwaterInjectionWaterDoesNotDegradeWaterQuality


WaterBoardandPG&E

WaterBoard X

3.2LandUse

LU‐MM‐1:ObtainBureauofLandManagementPermitsinCompliancewithCaliforniaDesertConservationAreaPlanandtheWestMojavePlan

Priortoremedialactivitiesonfederalland

PG&EwithBLM WaterBoard X

Note:PotentialremediationactionsonBLMlandhavenotbeenspecificallyidentified,butarelikelytoincludemonitoringwells,extractionwells,pipingandaccessroads.AgriculturaltreatmentunitsarenotlikelytobeproposedonfederallandsgivenAUscanbemoreefficientlyplacedincentrallocationsonprivatelands.

LU‐MM‐2:AcquireAgriculturalConservationEasementsforanyImportantFarmlandIfWaterRightsAreAcquiredforRemediation

Priortoremedialactivitiesonimportantfarmland

PG&E WaterBoard X



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ALL IRZ AU ATF FWI

3.3HazardsandHazardousMaterials

HAZ‐MM‐1:ImplementContingencyActionsifContaminatedSoilisEncounteredDuringGroundDisturbance

Duringexcavationactivities

PG&EwithqualifiedProfessionalEngineerorProfessionalGeologist

WaterBoard X

HAZ‐MM‐2:ImplementSpillPrevention,Control,andCountermeasuresPlanDuringConstruction

Priortoandduringconstructionactivities

PG&EwithSanBernardinoCountyFireDepartment

WaterBoard X

HAZ‐MM‐3:ImplementBuildingMaterialsSurveyandAbatementPractices

Priortostructuredemolitionormodificationactivities

PG&EwithregisteredenvironmentalassessororCalifornia‐registeredprofessionalengineer

WaterBoard X

3.4GeologyandSoils

GEO‐MM‐1:LandSubsidenceMonitoring,Investigation,andRepair(Recommendedonly)

Priortoandduringremedial‐inducedgroundwaterdrawdown

PG&EwithlandownerandqualifiedexpertapprovedbyWaterBoard

WaterBoard X

GEO‐MM‐2:EmergencyResponsePlanforPotentialRemedialPipelineorStorageTankRupture

Priortooperationofremedialpipelineorstoragetank

PG&E WaterBoard X

3.5AirQualityandClimateChange

AIR‐MM‐1:UtilizeCleanDiesel‐PoweredEquipmentduringConstruction

Duringconstruction

PG&E WaterBoard X



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ALL IRZ AU ATF FWI

AIR‐MM‐2:EnsureFleetModernizationforOn‐RoadMaterialDeliveryandHaulTrucksduringConstruction

Duringconstruction

PG&E WaterBoard X

AIR‐MM‐3:ImplementEmission‐ReductionMeasuresduringConstruction

Priortoandduringconstruction

PG&E WaterBoard X

AIR‐MM‐4:ImplementDustControlMeasuresduringConstructionandOperations

Duringconstructionandoperation

PG&EwithMDAQMD

WaterBoardwithMDAQMD

X

AIR‐MM‐5:UtilizeCleanDiesel‐PoweredEquipmentforOperationofAgriculturalTreatment(Alternative4C‐4only)

Duringoperation

PG&E WaterBoard X

Note:ThismitigationappliesonlytoAlternative4C‐4becauseithassubstantiallymoreagriculturalunitsandthusdiesel‐relatedexhaust(dieselparticulatematter),exceedingtheMDAQMDcancerriskthreshold,whereastheotheralternativesdonot.

AIR‐MM‐6:ImplementSanBernardinoCountyGHGConstructionStandardsduringConstruction

Duringconstruction

PG&EwithSanBernardinoCounty

WaterBoardwithSanBernardinoCounty

X

AIR‐MM‐7:ImplementSanBernardinoCountyGHGOperationalStandardsforOperations

Duringoperationofremedialactivities


WaterBoard X

AIR‐MM‐8:ImplementSanBernardinoCountyGHGDesignStandards

Priortooperationofremedialfacilities


WaterBoardwithSanBernardinoCounty

X

3.6Noise

NOI‐MM‐1:PrepareaNoise/VibrationControlPlanandEmployNoise/Vibration‐ReducingConstructionPracticestoComplywithCountyNoiseStandards


PG&E WaterBoardwithCounty X



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ALL IRZ AU ATF FWI

3.7BiologicalResources

BIO‐MM‐1a:ImplementMeasurestoMinimize,Reduce,orMitigateImpactsonDesertTortoiseduringConstruction


PG&Ewithauthorizedbiologist,CDFW,USFWS

Authorizedbiologist

WaterBoard

X

BIO‐MM‐1b:LimitFootprintofDisturbanceAreaswithinSpecial‐StatusSpeciesHabitats

Priortoconstruction

Duringconstruction

PG&Ewithauthorizedbiologistorenvironmentalmonitor

Authorizedbiologist/environmentalmonitor

WaterBoard

X

BIO‐MM‐1c:ImplementPre‐ConstructionandOngoingAwarenessandTrainingProgram

Priortoconstruction

Duringconstruction

PG&Erwithauthorizedbiologistorenvironmentalmonitor

Authorizedbiologist/environmentalmonitor

WaterBoard

X

BIO‐MM‐1d:ConductOngoingBiologicalMonitoringduringConstruction

Duringconstruction

PG&Ewithauthorizedbiologicalmonitors

Authorizedbiologist

WaterBoard

X

BIO‐MM‐1e:MinimizePotentialConstructionHazardstoSpecial‐StatusSpecies

Duringconstruction

PG&E Authorizedbiologist/environmentalmonitor

WaterBoard

X

BIO‐MM‐1f:ImplementMeasurestoMinimizeandPreventAttractionofPredatorsduringConstructionandOperation

Priortoandduringconstructionandoperation

PG&E Authorizedbiologist/environmentalmonitor

WaterBoard

X

BIO‐MM‐1g:ReductionofProject‐RelatedSpreadofInvasivePlantSpecies

Afterconstruction

PG&Ewithqualifiedbiologist

Qualifiedbiologist

WaterBoard

X



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ALL IRZ AU ATF FWI

BIO‐MM‐1h:CompensateImpactsonDesertTortoiseandMohaveGroundSquirrelHabitat

PriortoESApermits

Within3yearsofdisturbanceorearlierasdefinedinESApermits

PG&EwithCDFW,USFWS

WaterBoard,CDFW,USFWS

X

BIO‐MM‐1i:IntegratedPestManagementandAdaptiveManagementPlanforAgriculturalTreatmentUnits

Priortooperationofagriculturalunits

PG&E PG&E,WaterBoard X

BIO‐MM‐1j:ReductionofNightLightSpillover Priortooperationofremedialactivitieswithexteriorlighting


Qualifiedbiologist,WaterBoard

X

BIO‐MM‐1k:ImplementOtherMeasurestoMinimize,Reduce,orMitigateImpactsonMohaveGroundSquirrel


PG&Ewithauthorizedbiologist

Authorizedbiologist,WaterBoard

X

BIO‐MM‐1l:ImplementOtherMeasurestoMinimize,Reduce,orMitigateImpactsonBurrowingOwl


PG&Ewithqualifiedbiologist,CDFW

Qualifiedbiologist

WaterBoard

X

BIO‐MM‐1m:MinimizeImpactsonAmericanBadgerandDesertKitFoxOccupiedDens



Qualifiedbiologist

WaterBoard

X

BIO‐MM‐1n:AvoidImpactsonNestingLoggerheadShrike,NorthernHarrier,andOtherMigratoryBirds(includingRaptorsandexcludingBurrowingOwls)



Qualifiedbiologist

WaterBoard

X

BIO‐MM‐1o:ImplementMeasuresRequiredtoMinimize,Reduce,orMitigateImpactsonSpecial‐StatusPlants


PG&Ewithqualifiedbiologist,CDFW,USFWS(iflistedplants)

Qualifiedbiologist

WaterBoard

X



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ALL IRZ AU ATF FWI

BIO‐MM‐1p:IfRemedialActionsAffectMojaveFringe‐toedLizardHabitat,thanCompensateforHabitatLosses



Qualifiedbiologist

WaterBoard

X

BIO‐MM‐2:HabitatCompensationforLossofSensitiveNaturalCommunities


PG&Ewithqualifiedbiologist,USFWS,CDFW(iflistedspecies)

Qualifiedbiologist

WaterBoard

X

BIO‐MM‐3:MeasuresRequiredtoMinimize,Reduce,orMitigateImpactsonWatersand/orWetlandsundertheJurisdictionoftheState


PG&Ewithqualifiedbiologist,USACE,CDFW,WaterBoard

Qualifiedbiologist

WaterBoard

X

BIO‐MM‐4:ImplementWestMojavePlanMeasurestoImpactsonDWMAsonBLMLand


PG&Ewithauthorizedbiologist,BLM

Authorizedbiologist

BLM

WaterBoard

X

3.8CulturalResources

CUL‐MM‐1:DeterminePresenceofHistoricResourcesasDefinedbyCEQA

Priortoconstruction

PG&Ewithqualifiedarchitecturalhistorian

WaterBoard X

CUL‐MM‐2:AvoidDamagetoHistoricResourcesLocatedinProjectAreasthroughProjectModification

Priortoconstruction


WaterBoardandBLM X

CUL‐MM‐3:RecordHistoricResources Priortoconstruction


WaterBoard X

CUL‐MM‐4:ConductanArchaeologicalResourceSurveytoDetermineifHistoricalResourcesunderCEQAorUniqueArchaeologicalResourcesunderPRC21083.2arePresentinProposedAreasofDisturbance

Priortoconstruction

PG&Ewithqualifiedarchaeologist

WaterBoard X



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ALL IRZ AU ATF FWI

CUL‐MM‐5:AvoidDamagingArchaeologicalResourcesthroughRedesignofSpecificProjectElementsorProjectModification

Priortoconstruction


WaterBoard X

CUL‐MM‐6:EvaluateArchaeologicalResourcesand,ifNecessary,DevelopandImplementaRecoveryPlan



WaterBoard X

CUL‐MM‐7:ComplywithStateandCountyProceduresfortheTreatmentofHumanRemainsDiscoveries

Duringconstruction


WaterBoard X

CUL‐MM‐8:ConductPreconstructionPaleontologicalResourceEvaluation,Monitoring,ResourceRecovery,andCuration

Prior,duringandpotentiallyafterconstruction

PG&Ewithqualifiedpaleontologistand/orgeologist

WaterBoard X

3.9UtilitiesandPublicServices

Nomitigationmeasuresrequired ‐‐ ‐‐ ‐‐

3.10TransportationandTraffic

TRA‐MM‐1:ImplementTrafficControlMeasuresduringConstruction

Duringconstruction

PG&E,SanBernardinoCounty,Caltrans

WaterBoard X

3.11Aesthetics

AES‐MM‐1:ScreenAbove‐GroundTreatmentFacilitiesfromSurroundingAreas

Duringconstruction

PG&E WaterBoard X

AES‐MM‐2:UseLow‐SheenandNon‐ReflectiveSurfaceMaterialsonVisibleRemediationFacilitiesandInfrastructure

Duringconstruction

PG&E WaterBoard X

AES‐MM‐3:ApplyLightReductionMeasuresforExteriorLighting

Duringconstruction

PG&E WaterBoard X



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ALL IRZ AU ATF FWI

3.12Socioeconomics

SE‐MM‐1:ManageVacantLands,Residences,andStructurestoAvoidPhysicallyBlightedConditions

Duringconstructionand/oroperation

PG&E WaterBoard X

1 WhenPG&Eisresponsibleforconstruction‐relatedmitigation,itwillbeimplementedbyPG&Eortheirconstructioncontractor. 2 ApplicableRemedialAction: ALL–Allremedialactivities(includingATF,AU,FWI,IRZandmonitoringwells)

ATF–Abovegroundtreatmentfacility

AU–Agricultural(land)treatmentunitsFWI–FreshwaterinjectionIRZ–In‐situreductionzones(belowgroundtreatment)



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Mitigation Measure Worksheets



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WTR-MM-1: Purchase of Water Rights to Comply with Basin Adjudication

ImplementationTiming: Annually

ImplementationResponsibility: PG&E

MonitoringResponsibility: WaterBoard(withtheMojaveWaterAgency)

FrequencyofMonitoring: SeemonitoringrequirementsinapplicableWDRs

FrequencyofReporting: SeereportingrequirementsinapplicableWDRs

StandardforCompletionorCompliance: MitigationincorporatedintoapplicableWDRs

AgencyVerificationofCompletionorCompliance: AsspecifiedinapplicableWDRs

Mitigation Measure:

BecauseregionalgroundwaterdrawdownfromtheprojectmayreducetheavailabilityofregionalandstatewatersuppliesintheCentroSubarea,theWaterBoardwillincluderequirementsinthenewCAOand/orassociatedWDRsissuedfortheremediationasfollows:

ByJanuary31ofeveryyear,PG&EwilldocumentitstotalwaterrightsanditsFreeProductionAllowance(FPA)forgroundwaterpumpingrelativetotheremedialprojecttotheWaterBoard.

ByDecember31ofeveryyear,PG&Ewilldocumenttheexpectedtotalamountofnetagriculturaltreatmentwateruseforthefollowingyear.

Atalltimes,PG&EwillpossessadequatewaterrightsandFPAthatmeetorexceedthecurrentexpectedagriculturaltreatmentwateruse.

IfPG&EfailstoacquireadequatewaterrightsandFPAtosupportproposedagriculturaltreatment,PG&Ewillberequiredtoimplementabove‐groundtreatmentormodifyexistingremedialactivitiestoadequatelycompensateforanylossinplannedagriculturaltreatment.



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WTR-MM-2: Mitigation Program for Water Supply Wells Affected by Remedial Activities, including Impacts Due to Chromium Plume Expansion, Remediation Byproducts and Groundwater Drawdown

ImplementationTiming: Duringoperation


MonitoringResponsibility: WaterBoard





Mitigation Measure:

PG&Ewillimplementacomprehensiveprogramtodetermineresidencesandagriculturallandownerswhosewellsmaybeadverselyaffectedbyremedialactionsinrelationtochromiumplumeexpansion,remediationbyproducts,orgroundwaterdrawdown.

Implementationoftheprogramdescribedbelowisdesignedtoprovideadvancewarningbeforewatersupplywellimpairmentoccurs.Suchaprogramwillbedesignedtoeitherexpediteremediationbeforeawatersupplywellbecomesaffected,orprovidereliablewatersupplyfortheentiredurationofwellimpairmentduetoremedialactivities.ForthepurposesoftheprojectandthisEIR,watersupplywellsarethosethatprovidewaterforagricultural,domestic,orindustrialuses,andincludethosethatareusedforwatersupplyforfreshwaterinjections.WatersupplywellsdonotincludeIRZinjectionwellsormonitoringwells.

TheMitigationProgramwilldetermineall“actuallyaffected”andall“potentiallyaffected”wells(definedforeachsub‐mitigationmeasure,WTR‐MM‐2athrough2c,below).

Ifawatersupplywellisdeterminedtobean“actuallyaffected”well,thenPG&Ewillprovidealternativewatersupplymeetingtherequirementsdescribedbelow.

Ifawatersupplywellisdeterminedtobe“potentiallyaffected”well,thenPG&Ewilleither1)expediteremediationoftheconditionscausingthewelltobepotentiallyaffectedsuchthatactualimpactsdonotoccur;or2)providealternativewatersupply.IfPG&Echoosestoremediatethetriggeringcondition,itwillprovideafeasibilitystudyandplantotheWaterBoarddemonstratingfeasiblemeanstoavoidactuallyaffectinganydomesticoragriculturalwell.

Ifexpeditedremediationisnotfeasible,PG&Ewillprovidealternativewatersupplytoall“potentiallyaffected”wellspriortothewellsbeingactuallyaffectedbychromiumplumeexpansion,remedialbyproductsorsubstantialgroundwaterdrawdown.Becausethedefinitionofa“potentiallyaffected”wellincludesanywellthatisprojectedtobeaffectedinthenextyear,thisprovidesadequateadvancedwarningtofeasiblyprovidethealternativewatersupplybeforeimpactstosupplywellsoccur.



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WaterQualityRequirementsforAlternativeWaterSupply

DomesticWells—Fordomesticwellsaffectedbyremedialactivities,thealternativewatersupplywillmeetthefollowingwaterqualityrequirementsforinteriorhouseholduses:

Forchromium,alternativewatersupplyshallbeequaltoorlessthanWaterBoardestablishedmaximumbackgroundlevels.

AlternativewatersupplywillmeetallprimaryandsecondaryMaximumContaminantLevelsforanyconstituent,otherthanchromium,thatisaffectedbyremedialactivitiesasdefinedinthismitigation.

Forconstituentsnotaffectedbyremedialactivities,thealternativewatersupplywillbeconsistentwithpre‐projectwaterquality.

Californiaandfederalrequirementsforpublicwatersystemswillapplyifthereplacementwatersupplyisdefinedasapublicwatersystem.Wheretherequirementsinthethreepriorbulletsareestricterthanpublicwatersystemrequirements,thenthemorerestrictiverequirementshallapply.1

DomesticWells—Fordomesticwellsaffectedbyremedialactivities,PG&Ewillprovidereplacementwaterforoutsidenon‐potablehouseholdusesinanamountandqualitysufficienttosupportexistingoutdoornon‐potablewateruses.Suchoutsidenon‐potableusesinclude,butarenotlimitedto,thefollowing:irrigationforlandscaping,gardening,provisionofwaterforpetsandlivestock,andwashing.

AgriculturalWells—PG&Ewillprovidereplacementwatersuitableforagriculturaluse(includinglivestock)toallpotentiallyaffectedagriculturalwells,asdefinedbelow,inanamountandqualitysufficienttosupportexistingagriculturaluse.

WaterSupplyOptions

InadvanceofimplementingtheprojectPG&Ewillprovideafeasibilitystudyandplantoprovidealternativewatersupplies.Provisionofalternativewatersuppliesmaybethroughoneormoreofthefollowingmethods:

DeeperWellOption—PG&Emayopttodrillsupplywellsdeeperifthedeeperwellisshowntohavesufficientwatersupplyyieldandtomeetthewaterqualityrequirements(definedabove)orbetreatabletosuchlevelsthroughon‐sitetreatmentprovidedbyPG&E.TheWaterBoardwillnotallowtheuseofdeeperwellsifthereisapotentialtospreadchromiumfromtheupperaquifertotheloweraquifer.AlthoughPG&EhasindicatedthatitisnolongerofferingthedeeperwelloptionaspartofthecurrentwholehousewaterreplacementprogramduetotheinabilitytomeettheWaterBoardorder’sstandardforCr[VI]of0.06ppb,theEIRmitigationstandardforCr[VI]isthemaximumbackgroundlevelofCr[VI](currently3.1ppb),thusthedeeperwelloptionremainsafeasibleoptionforEIRmitigation.

StorageTankandHauledWaterOption—PG&Emayopttoprovidewaterstoragetanksandhaulwatertotheaffectedlocationprovidedwatermeetsthewaterqualityrequirements(definedabove)

1ThefederalSafeDrinkingWaterActandderivativelegislationdefinepublicwatersystemasanentitythatprovides“waterforhumanconsumptionthroughpipesorotherconstructedconveyancestoatleast15serviceconnectionsorservesanaverageofatleast25peopleforatleast60daysayear.



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orbetreatabletosuchlevelsthroughon‐sitetreatmentprovidedbyPG&E.Ifahomeownerrejectsthisoptionfortheirresidence,PG&Emustofferthemanalternative.

WellHeadTreatmentOption—PG&Emayopttoprovidetreatmentsystemsatthewellheadtoprovidewaterthatmeetsthewaterqualityrequirements.

WellModification—Forwellsonlyaffectedbygroundwaterdrawdownduetoremediation,existingwellsmaybemodifiedtoprovidewater,suchasbyloweringthewellpump,providedthatthemodificationprovidesadequatewatersupplyandwaterqualitytosupportdomesticoragriculturaluse,asappropriate.

AlternativeSupplyOption—PG&Emayopttoprovideanalternativewatersupplythatdrawswaterfromasourceofwaterthatisnotaffectedbythechromiumplume,suchasacommunitywatersystem.Thisoptioncanonlybeprovidedsuchthatthewatersourceisnotprojectedtobeaffectedbyplumeexpansion,remedialbyproducts,orgroundwaterdrawdownforthelifetimeofremediationandcanmeetthewaterqualityrequirements.Thereareseveraldifferentoptionsforawatersupplysystemasfollows:

Useofwellsupgradientorotherwiseunaffectedbythechromiumplumeorremediation,combinedwithasystemofpipelinestowaterrecipients.Forexample,wellsneartheMojaveRiverareupgradientofthechromiumplume,areconsistentlyproductive,andcouldbepotentialcandidatesforawellsource.BasedonexperiencewithfreshwaterinjectionusingPG&E’swellssouthoftheCompressorStation,theremaybenaturally‐occurringconstituents,suchasarsenic,thatmightrequirepre‐treatmentbeforeprovidingasadrinkingwatersystem.

UseofaconnectiontoGoldenStateWaterCompanywhichcouldinvolveanestimated12‐milepipelinetotieintotheexistingwatertreatmentsystem.

UseofaconnectiontotheMWArechargepipelinelocatedalongCommunityBlvd.TheMWArechargepipelinederiveswaterfromtheCaliforniaaqueductandMWAwouldhavetoacquireadequaterightstowatertoprovideitaslocalwatersupply.Ifthiswaterisunabletomeetdrinkingwaterstandardsinitsoriginalstate,itmayrequiretreatmentbeforedistributionasawatersource.

AsdescribedbelowunderMitigationMeasureWTR‐MM‐5,asthespecificsofproposedwatersystemsaredeveloped,additionalproject‐levelCEQAanalysismaybenecessary.

BottledWaterOption—Ifrequestedbythehomeowner,PG&Emayprovidebottledwaterforconsumptiveuses.However,theprovisionofbottledwaterdoesnotmeetthefullintentofthismitigationbecausefullwellwaterreplacementwouldnotbeprovidedforallindoorandoutsidewateruses.Therefore,bottledwaterwouldneedtobesupplementedwithoneoftheotheroptionsdescribedabovetoprovidefullwellwaterreplacement.Ifthehomeowneronlywantsbottledwaterandnotfullwellwaterreplacementbytheproposedmethods,thenPG&EshalldocumentthistotheWaterBoard.

Regardingacommunitywatersystem,whiletechnicallyfeasible,theremaybechallengestoimplementingsuchasysteminHinkley.

AccordingtotheEPA,verysmallsystems(thoseserving25to500people)havethelargestnumberofviolations(mostlymonitoring/reportingviolations),andtheyexperienceonemaximumContaminantLevelViolationforevery80peopleserve,whichisthehighestratioofallsystem



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servicepopulationcategories.Bycomparison,largeurbansystems(servingmorethan100,000people)experienceoneMaximumContaminantLevelviolationforevery200,000peopleservice(EPA2012b)2.

TheCaliforniaDepartmentofPublicHealth(CDPH)hasregulatoryauthorityovercommunitywatersystems.UndertheprovisionsofSection116330oftheCaliforniaHealthandSafetyCode,CDPHhasdelegatedapprovalofsmallwatersystemswithlessthan200connectionstolocalprimaryagencies,whichinthiscasewouldbetheSanBernardinoCountyPublicHealthDepartment,DivisionofEnvironmentalHealthServices.Apermitapplicationforacommunitywatersystemwouldrequirecomprehensivetechnical,managerial,andfinancialassessmentstogainCDPH(ifmorethan200connections)orSanBernardinoCounty(iflessthan200connections)approval.Inordertobeapproved,smallwatersystemsmustdemonstratethattheycanbesustainableforthelongterm.

Anadditionalconcernisthelongleadtimetoimplementacommunitywatersystem,giventheapprovalandreviewprocess,andmoreextensiveconstructionactivitiesthanotheroptions,whichcouldtakeaslongas5years.

Hinkleyisdominatedbyruralresidences,manyofwhicharehighlydispersed,whichincreasestheamountofpiping,pumping,andassociatedcostandconstruction.

SomeindividualsinHinkleymaypreferacommunitywatersystem,butotherindividualsmayprefertheindependenceoftheirownwell,whichmaycomplicatetheimplementationofthisoption.

Monitoring

WaterQualityMonitoringandGroundwaterModeling

PG&EwillmonitorwaterqualityandmodelgroundwaterconditionsasrequiredbyMitigationMeasuresWTR‐MM‐2a,‐2b,and‐2cbelow.

Reporting

PG&EwillincorporatereportingonwatersupplyprogramimplementationintoannualreportingtotheWaterBoard.Reportingwillincludedescriptionsofallcompletedandplannedexpeditedremediationactionsandalternativewatersuppliesforthefollowingyear.

2Seehttp://www.epa.gov/nrmrl/wswrd/dw/smallsystems/regulations.html.



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WTR-MM-2a: Mitigation Program for Water Supply Wells Affected by the Chromium Plume Expansion due to Remedial Activities

ImplementationTiming: Duringoperation







Mitigation Measure:

DefiningActuallyandPotentiallyAffectedDomesticSupplyWells

“Actuallyaffecteddomesticwells”willbedefinedasanydomesticwatersupplywellwithchromium(hexavalentortotal)concentrationsthatexceedanyofthefollowingcriteriaduetoremedialactions:

Maximumbackgroundlevels(ifthewellpreviouslyhadconcentrationsbelowmaximumbackgroundlevels);or

concentrationsincreaseby10%ormore(ifthewellpreviouslyhadconcentrationsthatexceedmaximumbackgroundlevels).

“Potentiallyaffecteddomesticwells”willbedefinedasdomesticsupplywellsthathaveanincreaseinchromiumconcentrationsduetoremedialactionsandwhich:

arelocatedwithinone‐mileofthedefinedchromiumplume;or

arepredictedtohaveanyoftheaboveconditionsforan“actuallyaffecteddomesticwell”withinoneyearasindicatedbygroundwatermodeling.

Monitoring

WaterQualityMonitoring

PG&EwillmonitorCr[VI]andCr[T]indomesticwells(whereverallowedbywellowners)withinonemiledowngradientorcrossgradientofthepreviouslydefinedchromiumplume,onaquarterlybasis.

MonitoringrequirementsmaybeadjustedbytheWaterBoard’sExecutiveOfficerbasedoncontaminantconcentrationtrends,plumegeometrychanges,orotherfactors.



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WaterQualityandGroundwaterModeling

PG&Ewillannuallymodelthemovementofthechromiumplumeandwillprovidemapsanddescriptionsofestimatedplumemovementforthefollowingthreeyears.ThemodelingeffortwillbeprovidedtotheWaterBoardbyJanuary31ofeachyear.

Theresultsofthemodelingwillincludepredictionsforwellsthatmaybecomeaffectedwithinthefollowingyearandsuchpredictionswillbeusedtoplanforeitherchangingremediationactivitiesand/ortheprovisionofalternativewatersuppliesinadvanceofeffectsondomestic.

Thereportwillalsodefinethedowngradientandcrossgradientmonitoringprogramareasunderthissectionforthefollowingyear.Monitoringareasmaybemodifiedoverthecourseoftheyearasdescribedinthewaterqualitymonitoringsectionabove.



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WTR-MM-2b: Water Supply Program for Water Supply Wells Affected by Remedial Activity Byproducts

ImplementationTiming: Oneyearpriortooperation,wherepossiblewithoutdelayingplannedremediation,andduringoperation(initialmonitoringmaybeconcurrentwithremediationeffortsifsuchmonitoringwouldotherwisedelayremediationefforts)







Mitigation Measure:

DefiningActuallyAffectedandPotentiallyAffectedWells

“Actuallyaffecteddomesticwells”willbedefinedasanydomesticwatersupplywellwithremediationbyproductconcentrationsthatexceedanyofthefollowingcriteriaduetoremedialactions:

concentrationsaboveaCaliforniaprimaryorsecondaryMaximumContaminantLevelsifthewellcurrentlycontainsconcentrationsthatarelessthanCaliforniaprimaryorsecondaryMaximumContaminantLevelorwaterqualityobjective;or

a10%increaseabovecurrentlevelsifthewellhasconcentrationsthatcurrentlyexceedaCaliforniaprimaryMaximumContaminantLevel3;or

a20%increaseabovecurrentlevelsifthewellhasconcentrationsthatcurrentlyexceedaCaliforniasecondaryMaximumContaminantLevelorwaterqualityobjective4;or

a20%increaseabovecurrentlevelsifthewellhasconcentrationsthatcurrentlyarelessaCaliforniaprimaryorsecondaryMaximumContaminantLevelorwaterqualityobjective.5

“Potentiallyaffecteddomesticwells”willbedefinedaswellsthatmeetanyofthefollowingcriteria:

Allwellslocatedwithinone‐halfmiledowngradientorone‐quartermilecrossgradientofan“actuallyaffecteddomesticwell”oranaffectedmonitoringwell.

3Asnotedinthesignificancecriteria,thedischargermaysubmitevidenceifitbelievestheincreaseinaspecificinstanceisnotstatisticallysignificant.4Ibid.5Ibid.



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Allwellspredictedtobewithinone‐halfmiledowngradientorone‐quartermilecrossgradientofan“actuallyaffecteddomesticwell”oranaffectedmonitoringwellinthenextyearbygroundwaterflowandtransportmodeling.

“Actuallyaffectedmonitoringwells”willbedefinedusingthecriteriaabovefor“actuallyaffecteddomesticwells”.

“Actuallyaffectedagriculturalwells”willbedefinedasanagriculturalwellwherethefollowinghasoccurred:

remedialactionhascausedanincreaseinTDSorotherwiseaffectedwaterqualitysuchthat(1)agriculturalyieldsarepredictedtobereducedbyatleast25%or(2)agriculturalproductispredictedtohavesubstantialorlikelyreductioninqualityorquantity.Examplesofsubstantialchangesinqualityincludechangesinpalatability,appearance,orotherfactorsthatwouldimpedetheabilitytosellcropsatprevailingcropprices.

“Potentiallyaffectedagriculturalwells”willbedefinedaswellsthatmeetanyofthefollowingcriteria:

Agriculturalwellswithinone‐halfmiledowngradientorone‐quartermilecrossgradientofan“actuallyaffectedagriculturalwell”oranaffectedmonitoringwell(whennoagriculturalwellexistwithintheseintervals);

Allwellswhereanyoftheaboveconditionsispredictedtooccurthroughgroundwaterflowandtransportmodelingwithinoneyear.

Monitoring

WaterQualityMonitoring

PG&Ewillconductaninitialmonitoringofdomesticandagriculturalwellswithinone‐miledowngradientorcross‐gradientofanyproposedin‐situremediationoragriculturaltreatmentunitcommencinguponapprovalofaneworderallowingexpandedremediation.Wherepossiblewithoutdelayingplannedremediationefforts,initialmonitoringwillbedonebeforeoperationofnewin‐situremediationareasandagriculturaltreatmentunitsforaminimumofoneyearonaquarterlybasis.Whereinitialmonitoringcannotbedoneforoneyearpriortooperationswithoutdelayingplannedremediationefforts,theninitialmonitoringcanbedoneconcurrentlywithcommencementofoperationsofnewin‐situremediationareasandagriculturaltreatmentunits.Constituentsanalyzedwillincludeallpotentialremedialactivitybyproductstoensurethatpre‐remediationwaterqualityisdefined,andthatdefinitionisapprovedbytheWaterBoard,foralldomesticandagriculturalwellsforwhichwellownersprovidepermissionforsampling.

PG&Ewillmonitorforremedialactivitybyproductsindomesticandagriculturalwells(wherevertheWaterBoarddeemsappropriate)withinone‐halfmiledowngradientandone‐quarter‐milecrossgradientofanyin‐situoragriculturaltreatmentunit,onatwice‐yearly(semi‐annual)basis.

Ifanydomesticoragriculturalwellsarefoundtobeactuallyaffectedbyremedialbyproducts(asdescribedabove),PG&EwillincreasemonitoringoftheaffectedwelltooncepermonthuntilalternatewatersupplyisprovidedtothesatisfactionoftheWaterBoard,afterwhichmonitoringcanbereducedtotwiceyearlyifnearbymonitoringwellsexist.



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Inaddition,ifanydomesticoragriculturalwellsarefoundtobeactuallyaffectedbyremedialbyproducts(asdescribedabove),PG&Ewillfurthermonitorforthatbyproductinalldomesticandagriculturalwells(wherevertheWaterBoarddeemsappropriate)withinone‐halfmiledowngradient/one‐quartermilecrossgradientofthatimpactedwellforthefollowingtwoyearsonaquarterlybasis.Thisprogramisintendedtoexpandtheareaofmonitoringinadvanceofanypotentialbyproductplume,andtoexpandandcontractthemonitoringareainresponsetotheobservedbyproductsandremedialprogress.

In‐situtreatmentbyproductmonitoringwillconsistofiron,manganese,arsenicandtotalorganiccarbon.

AgriculturaltreatmentunitbyproductmonitoringwillconsistofTDS,nitrates,uranium,andradionuclides.IftheinvestigationrequiredbyMitigationMeasureWTR‐MM‐5identifiesthatagriculturaltreatmentwouldsignificantlyaffectorhavethepotentialtoaffecturaniumorgross‐alphalevelsingroundwater,thenagriculturaltreatmentunitbyproductmonitoringwillalsoincludeuranium,gross‐alpha,andanyotherapplicableradionuclide,suchasradium,inadditiontosoilandplantsamples.AdditionalmonitoringforagriculturalinputsmayberequiredbytheWaterBoard,iftheWaterboarddeterminesitiswarranted.

MonitoringrequirementsmaybeadjustedbytheWaterBoard’sExecutiveOfficerbasedoncontaminantconcentrationtrends,byproductplumegeometry,orotherfactors.

GroundwaterFlowandTransportModeling

PG&Ewillannuallymodelthemovementofanybyproductplumesandwillprovidemapsanddescriptionsofestimatedplumemovementandgroundwaterlevelchangesforthefollowingthreeyears.ThemodelingeffortwillbeprovidedtotheWaterBoardbyJanuary31ofeachyear.

Theresultsofthemodelingwillincludepredictionsforwatersupplywellsthatmaybeimpactedwithinthefollowingyearandsuchpredictionswillbeusedtoplanforeitherchangingremediationactivitiesand/ortheprovisionofalternativewatersuppliesinadvanceofeffectsondomesticandagriculturalwells.

Thereportwillalsodefineandconfirmthedowngradientandcrossgradientmonitoringprogramareasunderthissectionforthefollowingyear.Ifthereareinsufficientwellswithinthemonitoringareas,asdeterminedbytheWaterBoardinitsreviewoftheyearlyreporting,thenquarterlymonitoringofareasofinsufficiencywillberequired.



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WTR-MM-2c: Water Supply Program for Wells Affected by Groundwater Drawdown due to Remedial Activities

ImplementationTiming: Oneyearpriortooperation,wherepossiblewithoutdelayingplannedremediation,andduringoperation(initialmonitoringmaybeconcurrentwithremediationeffortsifsuchmonitoringwouldotherwisedelayremediationefforts)







Mitigation Measure:

DefiningActuallyandPotentiallyAffectedWells

“Actuallyaffecteddomesticwells”willbedefinedasfollows:

Allwellswheregroundwaterdrawdownofmorethan25%ofthepotentiallyaffectedwettedscreendepthwithinthesaturatedzonehasoccurredduetoremedialpumpingcomparedtothepre‐remedialreferencelevels,unlessitcanbedemonstratedthatthewellremainscapableofprovidinganadequateflowratefordomesticsupplyandthewellownerconcursthattheflowrateisadequatefortheiruse.

Allwellswheregroundwaterdrawdownofatleast10feetoccursandwaterqualitysamplingshowsatleasta10%increaseoverpre‐remedialreferenceconditionsofarsenic,manganese,uranium,orgrossalpha.6

“Potentiallyaffecteddomesticwells”willbedefinedasfollows:

Allwellswhereanyoftheaboveconditionsispredictedtooccurthroughgroundwatermodelingwithinoneyear.

“Actuallyaffectedagriculturalwells”willbedefinedasfollows:

Agriculturalwellswheregroundwaterdrawdownofmorethan25%ofthepotentiallyaffectedwettedwellscreendepthhasoccurredduetoremedialpumping,comparedtothepre‐remedialreferencelevels,unlessitcanbedemonstratedthatthewellremainscapableofprovidinganadequateflowrateforagriculturalsupplyandthewellownerconcursthattheflowrateisadequatefortheiruse.

6Ibid.



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“Potentiallyaffectedagriculturalwells”willbedefinedasfollows:

Allwellswhereanyoftheaboveconditionsispredictedtooccurthroughgroundwatermodelingwithinoneyear.

Monitoring

GroundwaterDrawdownMonitoring

PG&Ewillconductaninitialmonitoringofgroundwaterlevelsinalldomesticandagriculturalwells(whereverallowedbywellowners)withinone‐halfmiledowngradientorcross‐gradientofanyexistingorproposedgroundwaterextractionwelluponapprovalofaneworderallowingexpandedremediation.Initialmonitoringwillbeforaminimumofoneyear,willbedonequarterly,andwillincludemonitoringinMarchandOctober,ifpossible.Initialmonitoringwillbedonepriortooperationofgroundwaterextractionwells,wherefeasible,withoutunreasonablydelayingplannedremediation.Whereinitialmonitoringcannotbedoneforafullyearwithoutdelayingplannedremediation,thenmonitoringmaybedoneconcurrentlywithextractioncommencement.

PG&Ewillmonitorthegroundwaterlevelsinalldomesticandagriculturalwells(whereverallowedbywellowners)withinone‐quartermileofanygroundwaterextractionpointforthedurationofremedialpumpinguntilgroundwaterlevelshavestabilizedforaminimumoftwoyearsfollowingcommencementofgroundwaterextraction.Ifgroundwaterlevelscannotbemeasuredindomesticoragriculturalwells,thenmonitoringwellslocatedbetweenwatersupplywellsandtheareaofremedialactioncanbesubstituted.

Inaddition,ifanydomesticoragriculturalwellsarefoundtobeaffectedorpotentiallyaffectedbyexcessivedrawdownasdescribedbelow,PG&Ewill(1)conductbyproductmonitoring(forarsenic,manganese,uraniumandgrossalpha)and(2)measurethegroundwaterlevelsinoradjacenttodomesticandagriculturalwells(whereverallowedbywellowners)withinone‐quartermileofthatwelluntilgroundwaterlevelshavestabilizedforaminimumoftwoyears.Thisprogramisintendedtoexpandtheareaofmonitoringinadvanceofanyexcessivedrawdown,andtoexpandandcontractthemonitoringareainresponsetotheobserveddrawdown.

PG&Ewillmonitorgroundwaterlevelssemi‐annuallyinOctober(afterpeakirrigationmonths)andMarch(afterwinterrainsandbeforepeakirrigationmonths).

MonitoringrequirementsmaybeadjustedbytheWaterBoard’sExecutiveOfficerbasedongroundwaterlevelconditionsorotherfactors.

GroundwaterModeling

PG&Ewillannuallymodelpredictedgroundwaterlevelsbaseduponthemonthwiththegreatestwellwateruseandwillprovidemapsanddescriptionsofestimatedgroundwaterlevelchangesforthefollowingthreeyears.ThemodelingeffortwillbeprovidedtotheWaterBoardbyJanuary31ofeachyear.

Theresultsofthemodelingwillincludepredictionsforwellsthatwillbeimpactedwithinthefollowingyearandplansfortheprovisionofalternativewatersuppliesinadvanceofeffectsondomesticandagriculturalwells.

Thereportwillalsodefinethemonitoringprogramareaunderthissectionforthefollowingyear.



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WTR-MM-3: Incorporate Measures to Prevent, Reduce and Control Potential Temporary Localized Chromium Plume Bulging Into Overall Plume Control and Monitoring

ImplementationTiming: Priortoissuanceofpermits

ImplementationResponsibility: WaterBoardandPG&E


FrequencyofMonitoring: SeemonitoringrequirementsinapplicableWDRs/CAO

FrequencyofReporting: SeereportingrequirementsinapplicableWDRs/CAO

StandardforCompletionorCompliance: MitigationincorporatedintoapplicableWDRs/CAO

AgencyVerificationofCompletionorCompliance: AsspecifiedinapplicableWDRs/CAO

Mitigation Measure:

TheWaterBoardshallincluderequirementsinthenewCAOandassociatedWDRstoaddresspotentialchromiumplumebulgingduetoremedialactivities.Theserequirementsshallbeincorporatedintotheoverallplumeboundarymonitoringandhydrauliccapturerequirements.Theserequirementswillbeflexibletoallowforexpansionandcontractionoftheplume(onlyasauthorizedbytheWaterBoard)overtimeastheentiretyoftheplumeisaddressedandremediated.Thefollowingminimumrequirementsshallbeincorporatedintotheoverallplumeboundarymonitoringandhydrauliccapturerequirements:

Monitoringofplumeboundariesinareaswithnewremedialinjectionsorwithdrawalsforthepotentialforbulging.

Measurestolimitchromiumplumebulgesduringoperations.Thiscanbeachievedbymaintaininghydrauliccontrolandinwardgradientsbypumpingofextractionwells.Theplumecanbeallowedtomovetowardtheseextractionwellsbutnotbeyondthewells.

UntiltheWaterBoarddeterminesotherwise,PG&Ewilloperateandmaintaintheexistinggroundwaterextractionsystemtoachieveandmaintainhydrauliccapturewithintargetedareasonayear‐roundbasisconsistentwithCAOR6V‐2008‐0002A3,(LahontanRegionalWaterQualityControlBoard2012).TheWaterBoardmayperiodicallymodifyhydrauliccapturerequirementsasappropriatetoaddressremedialprioritiesovertime.

Agriculturaltreatmentunitsand/ortreatedwaterfromabove‐groundtreatmentfacilitiescanbeusedtoassistwithinwardhydraulicgradients,plumewaterbalance,andwaterqualityrestorationoftheaquifer.

PG&EwillimplementtheContingencyPlanforAUOperationsasdescribedintheFeasibilityStudyAddendumNo.3(PacificGasandElectricCompany2011c).

IftheWaterBoarddeterminesthatalternativemeasuresaremoreeffectiveatcontrolofplumebulging,theWaterBoardmaymodifytherequirementsmentionedabove.



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WTR-MM-4: Mitigation Program for Restoring the Hinkley Aquifer Affected by Remedial Activities for Beneficial Uses

ImplementationTiming: Nolaterthan10yearspriorconclusionofremediationproject



FrequencyofMonitoring: SeemonitoringrequirementsinapplicableWDRs/CAO

FrequencyofReporting: SeereportingrequirementsinapplicableWDRs/CAO

StandardforCompletionorCompliance: MitigationincorporatedintoapplicableWDRs/CAO

AgencyVerificationofCompletionorCompliance: AsspecifiedinapplicableWDRs/CAO

Mitigation Measure:

ThisrequirementholdsPG&EresponsibleforrestoringtheHinkleyaquiferbacktopre‐remedialreferenceconditions(definedasconditionspriortotheinitiationofremedialactionsincludedintheprojectdefinedinthisEIR).

AsdescribedinMitigationMeasureWTR‐MM‐5andWTR‐MM‐6,PG&Emayimplementtwodifferentapproachestomeetthisrequirement:

aquiferrestorationthroughdirecttreatmentofwater;and/or

basin‐wideapproachestomanagingagriculturaltreatmentremedialTDSandnitratebyproductsthatmayavoidtheneedforpost‐chromiumremediationactivitiestoaddresstheseremedialbyproducts.

Nolaterthan10yearspriortotheconclusionoftheproposedchromiumremediationproject,PG&EshallconductanassessmenttoevaluateadverseimpactsorpotentialadverseimpactstotheHinkleyaquiferfromitsremedialactions.

Iftheassessmentfindsthattheaquifercontainsconstituentsexceedingpre‐remedialreferenceconditionsandareduetoremedialaction,andthattheseconstituentsarelikelytobepresentupontheconclusionofremedialactions,PG&Ewillproposecleanupactionstorestoretheaquiferforbeneficialusesassoonaspossible,asapprovedbytheWaterBoard.Aquiferwaterqualityrestorationtopre‐remedialreferenceconditionswilloccurassoonaspossibleaftercompletionofchromiumremediation.Therecommendedtimeframeforrestorationiswithin10yearsofcompletionofchromiumremediationbuttheWaterBoardwillretainauthoritytodeterminetherequireddurationforcompletion.

Iftheassessmentfindsthattheaquiferincludesgroundwaterdrawdownduetoremedialactionssuchthatdomesticoragriculturalwellswerestillexperiencingwatersupplyshortagesandrequirealternativewatersupplies,andtheseexcesslevelsarelikelytoexistupontheconclusionofremedialactions,PG&Ewillproposeactions(whichcouldincludecontributingtoMWA’sgroundwaterrechargeprogram;temporarypurchaseofwaterallocationstohelpacceleratewaterlevelrecovery,



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orothermeasures)torestoretheaquiferforbeneficialusesassoonaspossible,asapprovedbytheWaterBoardorMojaveWaterAgency.Theseactionswilllikelyrequirefutureenvironmentalanalysesasthedetailsoftheactionaredefined.Groundwaterlevelswillberestoredtopre‐remedialreferenceconditionsassoonaspossibleafterthecompletionofchromiumremediation.Therecommendedtimeframeforrestorationofgroundwaterlevelsiswithin10yearsofchromiumremediation,butWaterBoardwillretainauthoritytodeterminetherequireddurationforcompletion.

Everyyearfollowingpreparationoftheassessmentandapprovalofrestorationtimeframes,PG&Emustsubmitastatusreportofactionstorestoretheaquiferforbeneficialuses.Thestatusreportwilldescribeallactionstakenoverthecourseoftheyearandlistproposedactionsforimplementationduringthefollowingyear.Anupdatedschedulewillbeprovidedpredictingfulfillmentofaquiferrestoration.

Theassessmentdescribedabovecanincludeanalysisofthepotentialfornaturalattenuationtoreturnpre‐remedialreferenceconditionswithinanacceptabletimeframe,asdeterminedbytheWaterBoard.ThismeasureislimitedtoaddressingtheeffectsofPG&Eremedialactionsthatcausechangesabovepre‐remedialreferenceconditions.Itispossiblethatwaterqualityorgroundwaterbaselinelevelsmaybeaffectedbynon‐PG&Eactions(suchasotheragriculturalordairyactivitynotcontrolledbyPG&E)duringchromiumremediation.PG&Ewillonlyberesponsibletoremediatetheeffectsthatitcauses,notthosethatareduetotheactionsofotherthird‐parties.

Severaloptionsexistfortreatmentofagriculturaltreatmentbyproducts(TDS,nitrate,uraniumandotherradionuclides)ifnecessary:

AbovegroundTreatment:Treatmenttechnologies,includingreverseosmosis,electrochemicaltreatment(suchaselectrocoagulation),ionexchangeandpossiblyothermethodscanbeusedtoremoveTDS,nitrateanduraniumfromwater.

In‐SituRemediation:In‐situremediationusingcarbonamendment,likethatproposedinthehighconcentrationportionofthechromiumplume,hasbeenusedtoremediateelevateduraniumlevelsingroundwater.

Basin‐WideApproachtoTDSandNitrate:Abasin‐wideapproachtoreducingTDSandnitratecouldinvolvefallowingof,orchangesinfarmingpracticesatotheragriculturalfieldswithinthebasinthatarenotusedforagriculturalunittreatmentandatareadairies.Sincetheprojectwillincreaseagriculturalfieldsandproductionofanimalfeed,abasin‐wideapproachmayincludeanoptiontoimplementa“farmswap”toallowfallowingofotherlocalagriculturalfieldstoreduceTDSlevelsinthegroundwaterbasin.Theremayalsobeoptionstoimproveirrigationtechniquesbyusingdrag‐dripirrigationinsteadofbroadcastirrigationtechniques(thusloweringirrigationamountsandTDSloading),andcroprotation(whichmaylowerwaterdemand).TheremayalsobeoptionstoworkwithlocalHinkleydairiestolowerTDSandnitrateinputsthroughbettersitemanagementpracticesofmanureandrunoff.Participationbyowners/operatorsofotheragriculturallandanddairieswouldbevoluntaryandwouldbesubjecttoprivatenegotiationbetweenPG&Eandwillingparticipants.WhiletheseapproachescouldloweroverallloadingofTDSandnitrateintotheHinkleygroundwateraquifer,long‐termuseofagriculturaltreatmentunitsforchromiumtreatmentmaystillresultinlocalizedincreasesofTDSandnitrate.Ifabasin‐wideapproachisproposedbyPG&E,theWaterBoardshallrequirethefollowing:



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Abasin‐wideapproachmustshowabenefittotheHinkleyValleyaquiferthatequalsorexceedstheimpairmentcausedbyremedialactivitiescomparedtopre‐remedialreferenceconditions.Forexample,thebasin‐wideapproachmustavoidorremoveanequalamountofTDSastheincreasedTDSloadingresultantfromagriculturaltreatmentunits.PotentialwaysofmeasuringthebenefitandimpairmentcanbeintermsofthenumberofimpairedwellsduetoTDSand/ornitrate,theareaofaquiferimpairmentduetoTDSand/ornitrate,andtheoverallannualTDSand/ornitrateloading.ThedischargermayproposedthemeansofmeasuringforWaterBoardreviewandapproval.

Ifthebasin‐widebenefitaboveisdemonstratedtobeequaltoorgreaterthantheremedialimpairment,thentheWaterBoardwillrequiremaintenanceofthebasin‐wideactionsforthebenefitfortheHinkleyaquiferuntilallareassignificantlyimpairedbyTDSand/ornitrateduetoremedialactionsreturntopre‐remedialreferenceconditions.

Ifthebasin‐widebenefitaboveisdemonstratedtobeequaltoorgreaterthantheremedialimpairment,thentheWaterBoardmaydecidetonotrequirePG&EtospecificallyremediatelocalizedTDSand/ornitrateincreasesduetoremedialactionsprovidedthatallaffecteddomesticandagriculturalwellsareprovidedreplacementwater(perMitigationMeasureWTR‐MM‐2)untilpre‐remedialreferenceconditionsreturn.

Theimplementationofabasin‐wideapproachislimitedtotheprojectstudyareaforthisEIRatthistime.Ifinthefuture,PG&Eproposesbasin‐wideapproachesinvolvingfarmsoutsidetheprojectstudyarea,theWaterBoardwillneedtocomplywithCEQAandmayneedsupplementalCEQAevaluationpriortoinclusionofadditionalactionsoutsidethecurrentprojectstudyarea.

SeveraloptionsalsoexistfortreatmentofIRZbyproducts(manganese,ironandarsenic)ifnecessary:

Asnecessary,manganesemitigationmaybethroughthemethodsproposedinthemanganesemitigationplan,suchasextractionandcaptureofmanganese‐affectedgroundwater,abovegroundaeration,and/orinfiltrationgalleriesorothermeasuresdeterminedtobeeffectivebytheWaterBoard.Thesemethodscanalsobeusedformitigationofironlevels,ifnecessary.

Asnecessary,arsenicmitigationmaybethroughabovegroundtreatmentusingprecipitation/coprecipitation,ion‐exchangeunits,membranefiltration,electrochemicalmethods(suchaselectrocoagulation)orothermeansdeterminedtobeeffectivebytheWaterBoard.



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WTR-MM-5: Investigate and Monitor Total Dissolved Solids, Uranium, and Other Radionuclide Levels in relation to Agricultural Treatment and Take Contingency Actions

ImplementationTiming: Investigationplanwithin3monthsandinvestigationcompletedwithin1yearofWaterBoardapprovalofWDRsallowingnewAUs.MonitoringforoneyearpriortoestablishingnewAUs(orconcurrentifnecessarytoavoidremediationdelay)andduringoperationpermonitoringrequirements.







Mitigation Measure:

TheWaterBoardwillincluderequirementsinthenewCAOand/orassociatedWDRsissuedfortheremediationasfollows:

PG&EwillsubmitaninvestigationplantotheWaterBoardconcerningTDS,uranium,andotherradionuclideslevelsinrelationtoexistingagriculturaltreatmentbysamplingwaterusedforagriculturaltreatmentandingroundwaterupgradient,beneathanddowngradientofagriculturaltreatmentunits.PG&EwillsubmittheinvestigationplanwithinthreemonthsofWaterBoardapprovalofWDRsallowingnewagriculturaltreatmentunits.

AfterapprovaloftheinvestigationplanbytheWaterBoard,PG&EwillconducttheinvestigationandprovidetheresultstotheWaterBoardalongwithananalysisofwhetheragriculturaltreatmentisaffectinguraniumlevels.TheinvestigationshallbecompletedwithinoneyearofWaterBoardapprovalofWDRsallowingnewagriculturaltreatmentunits.

PG&Ewillmonitorallnewagriculturaltreatmentunitsbyestablishingpre‐remedialreferencelevelsforTDS,uranium,andotherradionuclideslevelsattheoutsetagriculturaltreatmentandduringoperation.Monitoringdatawillbeconductedforoneyearpriortoestablishmentofnewagriculturaltreatmentunitswhereverfeasible(ifnotfeasiblewithoutundueremediationdelay,monitoringwillbedoneconcurrentlywithstartupofagriculturaltreatmentunits).

IfTDS,uranium,andotherradionuclideslevelsaredeterminedtoincreaseduetoagriculturaltreatmentassociatedwithremedialactions,thenPG&EwillmonitortheselevelsinandadjacenttoallagriculturaltreatmentunitsforthedurationofoperationandproposeremedialmethodsforWaterBoardapprovaltorestoretheaquifertopre‐remedialreferenceconditions.

IfthemonitoringofagriculturalunitsindicatesthatTDS,uranium,andotherradionuclideconcentrationsincreaseduetoagriculturaltreatmentassociatedwithremedialactionsthen



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correctiveactions(whichcouldincludeabovegroundtreatment,carbonamendment,orothermethods)perMitigationMeasureWTR‐MM‐4willbeimplementedtorestoreaquiferbeneficialusesafterremediationiscomplete.AlternativewatersupplieswillbeprovidedperMitigationMeasureWTR‐MM‐2foranysignificantlyaffectedwaterwellsuntilbeneficialusesarerestored.



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WTR-MM-6: Monitor Nitrate Levels and Manage Agricultural Treatment to Avoid Significant Increases in Nitrate Levels and Provide Alternative Water Supplies As Needed

ImplementationTiming: MonitoringforoneyearbeforecreatingnewAUs(orconcurrentifnecessarytoavoidremediationdelay),atstartofagriculturaltreatment,andasneededduringoperationofnewAUspermonitoringrequirements.







Mitigation Measure:

Agriculturaltreatmentwilllikelyreducenitratelevelsinthegroundwateraquiferoverall.However,ifgroundwaterisextractedfromanareaofhighernitrateconcentrationsandthentreatedinanareawithmuchlowernitrateconcentrations,itispossiblethatnitrateconcentrationscouldincreaseinthoselocalizedareas.TheWaterBoardwillincluderequirementsinthenewCAOand/orassociatedWDRsissuedfortheremediationasfollows:

GiventhatprioragriculturaltreatmentattheDesertViewDairyhasbeenshowntoreducenitratelevelssubstantially,itispossiblethatuseofirrigationwaterwithhighernitratelevelsmaynotresultinincreasednitratelevelsingroundwaterbeneathnewagriculturaltreatmentlocations.Inordertoconfirmifthisisoccurring,PG&Ewillmonitornitratelevelsforoneyearbeforecreatingnewagriculturaltreatmentunits(asfeasiblewithoutdelayingremediation),monitoratthestartofnewagriculturaltreatment,andcontinuemonitoringnitratelevelsduringimplementationofallnewagriculturaltreatmentunits.Ifnitratelevelsdonot:1)increaseabove10ppm(asN),or2)bymorethan10%(ifcurrentlevelsarealreadyabove10ppmasN),or3)bymorethan20%comparedtoexistinglevels(ifcurrentlevelsarelessthan10ppmasN)thennofurtheraction,otherthanmonitoring,willberequired.

Ifmonitoringindicatesthatnitratelevelsexceed10ppm(asN)orincreasingbymorethanthecriterianotedabove,thenPG&Ewillimplementacontingencyplanformanagingnitratelevelswhichmayincludesomecombinationofthefollowing:

Extractionsourcewaterwillbeshiftedfromapplicationwhereitwouldraiseconcentrationssubstantiallytolocationswithexistinghigherconcentrationsofnitrate,provideditwouldnotcauseanexceedanceofnitratelevelsatanydomesticwell.



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Extractionsourcewaterwillbeblendedbeforeapplicationtoagriculturaltreatmentunitssoastoavoidexceedanceof10ppmasNandavoidincreasesinexistinglevelsthatexceedthecriterianotedabove.

Above‐groundtreatmentmaybeusedasnecessarytomeettheconcentrationlevelsdescribedabove.

Ifcontrolofnitratecannotmeettheserequirements,PG&EmayrequestpermissionfromtheWaterBoardtoallowtemporaryincreasesinnitrateconditionsatcertainagriculturaltreatmentunits,ifandonlyif,thefollowingcanbedemonstrated:

nodomesticwellswillcontainnitrateconcentrationsabove10ppmoranincreaseinnitratelevelsexceedingthecriteriaabove;or

PG&Ewillprovidereplacementwaterforanyaffecteddomesticwelluntilsuchatimeasnitrateconcentrationsreturntoexistingconcentrationsattheaffectedwell,and

PG&Ewillbeheldaccountableforimplementingremedialmethodstorestoretheaquifertopre‐remedialreferenceconditionsafterremediationiscomplete.

PG&Ewillestimatethedurationofnitrateimpairmentofwaterqualityduetoremedialactivitiesandwillidentifyhowlongbeforeaffectedgroundwaternitratelevelswillreturntopre‐remedialreferenceconditions.Thedurationofnitrateimpairmentduetoremedialactivitiesmaypossiblyextendbeyondthetimenecessarytoremediatethechromiumplume;thegoalofremedialoperationinthelaterstagesofthecleanupshouldbetominimizethedurationofallimpacts.

TheWaterBoardwillretaintheauthoritytoapproveordenytemporaryimpairmentoftheaquiferduetonitratecontaminationandwillmakedeterminationsonacasebycasebasistakingintoaccountinformationonremedialprogress,theaffectedwellsandcommunity,thecertaintyofreturningaffectedgroundwatertopre‐remedialreferencewaterqualityconditionsovertimeandanyotherrelevantconsiderations.

Alternativelythismitigationmeasuremaybemetthroughbasin‐wideapproachesdescribedinMitigationMeasureWTR‐MM‐4.



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WTR-MM-7: Construction and Operation of Additional Extraction Wells to Control Carbon Amendment In-situ Byproduct Plumes

ImplementationTiming: Priortoissuanceofpermits,ifneededbasedonbyproductconcentrationsinmonitoringwells







Mitigation Measure:

Increasedin‐situremediationcouldresultinincreasedlevelsofbyproducts,suchasdissolvedarsenic,iron,andmanganeseinthegroundwatercomparedtocurrentlevels.


PG&EwillmonitorsecondarybyproductsingroundwaterasrequiredbyMitigationMeasureWTR‐MM‐2.

PG&Eshallcompleteaninvestigationofmanganeseandarsenicintheareawestofthedefinedchromiumplume(asofQ4/2012)anddemonstratetothesatisfactionoftheWaterBoardthatthedetectionoftheseconstituentsindomesticwellsisnotrelatedtoIRZoperations.ThisdemonstrationshalloccurbeforetheWaterBoardwillallowfurtherexpansionofIRZoperations.

Ifarsenic,iron,ormanganeseconcentrationsatdesignatedmonitoringwellsincreasetomorethan20percentabovethemaximumpre‐remedialreferencemonitoringwellconcentration,PG&EwillconstructandoperateadditionalextractionwellsorimplementanequallyeffectivemitigationmeasurealongorupgradientoftheIRZtreatmentboundarytointerceptorreducereagentconcentrationsandsecondarybyproductstopreventeffectstodomesticwatersupplywells.

Extractionwellsmaybeusedtointerceptelevatedconcentrationsofbyproductsandpreventdowngradientmigration.

Asnecessary,manganesemitigationmaybethroughthemethodsproposedinthecurrentmanganesemitigationplan,suchasextractionandcaptureofmanganese‐affectedgroundwater,abovegroundaeration,and/orinfiltrationgalleriesorothermeasuresdeterminedtobeeffectivebytheWaterBoard.Thesemethodscanalsobeusedformitigationofironlevels,ifnecessary.

Asnecessary,arsenicmitigationmaybethroughabovegroundtreatmentusingprecipitation/coprecipitation,ion‐exchangeunits,membranefiltration,electrochemical



34

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ICF 00122.11

methods(suchaselectrocoagulation)orothermeansdeterminedtobeeffectivebytheWaterBoard.

Ifcontrolofbyproductplumescannotbeachievedwithoutcompromisingthepaceofcleanupsuchthatdomesticwellsmaybeaffectedbybyproductplumes,thenPG&EwillrequestpermissionfromtheWaterBoardtoallowbyproductplumemigrationprovidedthefollowingareimplemented:

PG&Ewillprovidefateandtransportmodelingofbyproductplumemigration,inabsenceofcompleteboundarycontrol,includingidentificationofallaffecteddomesticandagriculturalwells.

PG&Ewilldemonstratethedurationofbyproductplumeimpairmentofwaterqualityandwillidentifyhow/whenaffectedgroundwaterwillreturnbacktopre‐remedialreferenceconditions.Thedurationofbyproductplumeimpairmentmaypossiblyextendbeyondthetimenecessarytoremediatethechromiumplume.Thegoalofremedialoperationinthelaterstagesofthecleanupshouldbetominimizethedurationofallimpacts.

PG&Ewillprovidealternativewatersuppliestoallwellsproposedtobeaffected,perMitigationMeasureWTR‐2.

TheWaterBoardwillretaintheauthoritytoapproveordenytemporaryimpairmentoftheaquiferduetobyproductgenerationandwillmakedeterminationsonacasebycasebasistakingintoaccountinformationonremedialprogress,theaffectedwellsandcommunity,thecertaintyofreturningaffectedgroundwatertopre‐remedialreferencewaterqualityovertimeandanyotherrelevantconsiderations.



35

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ICF 00122.11

WTR-MM-8: Ensure Freshwater Injection Water Does Not Degrade Water Quality

ImplementationTiming: Priortousingnewsourcesofwaterforfreshwaterinjectionandthentwiceperyearduringoperation







Mitigation Measure:


PG&Ewillsampleallwatersourcesproposedforuseinfreshwaterinjectionforallbasicwaterqualityparametersandwillspecificallymonitorforchromium(totalandhexavalentchromium),TDS,uranium,otherradionuclides(includinggrossalpha),nitrate,arsenic,manganese,ironandsulfate.DatawillbeprovidedtotheWaterBoardforreview.Meansmusthappenbeforeusenewwater

Concentrationsofallconstituentsinfreshwaterinjectedforplumecontrolmusteitherbe1)lessthantheapplicableprimaryorsecondaryMaximumContaminantLevelor2)iftheconcentrationsofcertainconstituentsattheinjectionpointalreadyexceedaMaximumContaminantLevel,thentheinjectionwatermusthaveconcentrationsoftheconstituentequaltoorlessthanthatintheambientgroundwaterattheinjectionpoint.

PG&EwillidentifytotheWaterBoardthefiltrationorpretreatmentnecessarytomeetthewaterqualitylevelsdescribedabove.Afterapprovalofthewatersourceforuseforfreshwaterinjection,PG&Ewillsamplethetreatedwateronasemi‐annualbasis(twiceperyear)ataminimumtodemonstratethatthewatersourceisstillacceptableforuseforfreshwaterinjection.Ifitisfoundthatthewatersourceisnotacceptableforuseforfreshwaterinjection,freshwatermayneedtodrawfromdifferentareawherewaterqualitylevelsaremet.



36

March 2014

ICF 00122.11

LU-MM-1: Obtain Bureau of Land Management Permits in Compliance with California Desert Conservation Area Plan and the West Mojave Plan

ImplementationTiming: Priortoremedialactivitiesonfederalland

ImplementationResponsibility: PG&EwithBLM


FrequencyofMonitoring: Asneededpriortoremedialactivitiesonfederalland

FrequencyofReporting: Beforeremedialactivitiesonfederalland

StandardforCompletionorCompliance: CopiesofBLMsubmittals,approvals,andpermits

AgencyVerificationofCompletionorCompliance: __________________________________________________________

Mitigation Measure:

PG&EwillobtainanyrequiredapprovalsfromBLMforanyproposedremedialactivitiesonfederalland.PG&EwillprovidecopiesofBLMsubmittalsandapprovalstotheWaterBoardtokeeptheminformedofanyproposedremedialactivitiesonfederalland.



37

March 2014

ICF 00122.11

LU-MM-2: Acquire Agricultural Conservation Easements for any Important Farmland If Water Rights Are Acquired for Remediation

ImplementationTiming: Withinoneyearofacquiringwaterrightsfromimportantfarmland



FrequencyofMonitoring: Aspartofannualmonitoring

FrequencyofReporting: Aspartofannualreporting

StandardforCompletionorCompliance: Recordofagriculturalconservationeasement


Mitigation Measure:

PG&Ewilleitheravoidacquiringwaterrightsfromexistingimportantfarmland(prime,unique,statewideimportance)orwillacquireandrecordanagriculturalconservationeasementoversuchimportantfarmlandfromwhichitacquireswaterrightsforremedialpurposes,iftherehasbeenanetlossofsuchimportantfarmlandthathaveoccurredasaresultofimplementationoftheproject.Theconservationeasementwillprohibitallfutureconversionofthelandtonon‐agriculturallandforthedurationthatPG&Eretainswaterrightsassociatedwithsuchland.Theagriculturalconservationeasementwillberecordedwithinoneyearofpurchaseoracquisitionofanywaterrightsassociatedwiththesubjectproperty.Theeasementwillberevocableuponreturnofthewaterrightstotheagriculturallandowner.

Alternatively,PG&Emayobtainanagriculturalconservationeasementonotherimportantfarmlandintheprojectarea,ifitchoosesnottoobtainaneasementoverimportantfarmlandforwhichitacquireswaterrights.Ifthisoptionisselected,PG&Eshallobtain,ona1:1basis,anagriculturalconservationeasementondesignatedimportantfarmlandoveranacreagethatcorrespondstotheacreagefromwhichitacquireswaterrights.Thiseasementmayberevocableuponreturnofthewaterrightstotheoriginalagriculturallandowner,providedthattherearenointerveningimpedimentstothepotentialtoreturntheoriginallandtoagriculturaluse.



38

March 2014

ICF 00122.11

HAZ-MM-1: Implement Contingency Actions if Contaminated Soil is Encountered During Ground Disturbance

ImplementationTiming: Duringsoilexcavationandgradingactivities

ImplementationResponsibility: PG&EwithqualifiedProfessionalEngineerorProfessionalGeologist


FrequencyofMonitoring: Asneeded,tobedeterminedbyPEorPG

FrequencyofReporting: Asneeded,tobedeterminedbyPEorPGg

StandardforCompletionorCompliance: Annually:AnnualReport

Asneeded:AmemorandumofevidencethatPG&EconsultedwithanapprovedPEorPGregardingtheriskofencounteringcontaminatedsoilsandcommittingtobeavailableforconsultationduringsoilexcavationandgrading.Ifpotentiallycontaminatedsoilisunearthed,areportwiththerecommendedcourseofactionwillbepreparedbythePEorPGandprovidedtotheWaterBoard(andtoSanBernardinoCountyifremediationisrequired).

Annually:AnnualReportwithmemorandumofevidence


Mitigation Measure:

PG&EwillworkwithanexperiencedandqualifiedProfessionalEngineerorProfessionalGeologist,subjecttoapprovalbytheWaterBoard,whowillbeavailableforconsultationduringsoilexcavationandgradingactivities.

Ifpotentiallycontaminatedsoilisunearthedduringexcavationasevidencedbydiscoloration,odor,detectionbyhandheldinstruments,orothersigns,theProfessionalEngineerorProfessionalGeologistwillinspectthesite,determinetheneedforsamplingtoconfirmthenatureandextentofcontamination,andfileawrittenreporttotheprojectownerandtotheWaterBoardstatingtherecommendedcourseofaction.

Dependingonthenatureandextentofcontamination,theProfessionalEngineerorProfessionalGeologistwillhavetheauthoritytotemporarilysuspendfurtheractivityatthatlocationfortheprotectionofworkersorthepublic.If,intheopinionoftheProfessionalEngineerorProfessionalGeologist,significantremediationmayberequired,thePG&EwillcontacttheWaterBoardandrepresentativesoftheHazardousMaterialsDivisionofSanBernardinoCounty’sEnvironmentalHealthServicesDepartmentforguidanceandpossibleoversight.



39

March 2014

ICF 00122.11

HAZ-MM-2: Implement Spill Prevention, Control, and Countermeasures Plan During Construction

ImplementationTiming: PriortoandduringconstructionactivitiestriggeringtherequirementofaSPCCorequivalent

ImplementationResponsibility: PG&EwithSanBernardinoCountyFireDepartment


FrequencyofMonitoring: Beforeconstruction:EnsureSPCCPlanorequivalentcompletedandapproved

Duringconstruction:PeriodicallyasidentifiedinSPCCPlanorequivalent

FrequencyofReporting: Annually:AnnualReport

StandardforCompletionorCompliance: Annually:AnnualReport

Beforeconstruction:ApprovalofSPCCPlanorequivalent

Annually:AnnualReportwithannualsummaryofmonitoringandreportingactivities.


Mitigation Measure:

Topreventaccidentalspillsandcontainspillsofhazardoussubstancesthatmightoccur,PG&EwillprepareaSpillPrevention,Control,andCountermeasurePlan(SPCCPlan)orequivalentifrequiredbytheSanBernardinoCountyFireDepartment,priortocommencementofconstructionactivities.TheSPCCplanwillbeinaccordancewithallfederalandstatelawsthataddressesproceduresto(1)properlyhandle,use,store,and/ortransportpotentiallyflammableand/orotherchemicalhazardouswastes;(2)emergencyresponseprotocolstocontainthesesubstancesintheeventofanaccidentalspillorrelease;(3)specifyworkersafetytraining;and(4)reportingrequirementsintheeventofanaccidentalspillorrelease.IftheSPCCPlanisrequired,itisanticipateditwillincludethefollowingfeatures:

HazardousmaterialsstorageandusagewillbeinaccordancewiththerequirementsoftheSanBernardinoCountyFireCode,Articles79and80.ABusinessContingency/EmergencyPlanwillbepreparedinaccordancewithSanBernardinoCountyFireDepartmentrequirementsforchemicalsstoredon‐siteformorethan30daysinexcessoftheregulatorythresholds(55gallons,500pounds,or200standardcubicfeetofgas).Itisanticipatedtheplanwilllisthazardousmaterialshandledandincludeproceduresforemergencyresponse,training,andinspections.HazardouswasteswillbemanagedinaccordancewiththerequirementsofTitle22,CaliforniaCodeofRegulations,Division4.5.

Allspillsandcorrectiveactionswillberecordedinthefieldlogbythesitemanager.

Anyaccidentalspillthatreleaseshazardousmaterialstosoiloutsidethespillcontainmentpadsinamountsexceedingreportablequantitieswillbereportedtotheappropriateregulatoryagency.



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ICF 00122.11

Treatmentplantswillbeconstructedonaconcretefoundationandprovidedwithsecondarycontainmenttocontaindripsandspillsandtankeroffloadingareasasnecessary.



41

March 2014

ICF 00122.11

HAZ-MM-3: Implement Building Materials Survey and Abatement Practices

ImplementationTiming: Priortostructuredemolitionormodificationactivities

ImplementationResponsibility: PG&EwithregisteredenvironmentalassessororCalifornia‐registeredprofessionalengineer


FrequencyofMonitoring: Priortodemolition/modificationofanystructure


StandardforCompletionorCompliance: Priortostructuredemolition/modification:SignedreportordocumentationbyregisteredenvironmentalassessororCalifornia‐registeredprofessionalengineer.


AgencyVerificationofCompletionorCompliance: ___________________________________________________________

Mitigation Measure:

Foractivitiesinvolvingdemolitionormodificationofexistingorfuturenewfacilities,PG&EwillretainaregisteredenvironmentalassessororaCalifornia‐registeredprofessionalengineertoperformahazardousbuildingmaterialssurveypriortodemolitionormodificationactivities.Ifanyasbestos‐containingmaterials,lead‐containingmaterials,orhazardouscomponentsofbuildingmaterialsareidentified,adequateabatementpractices,suchascontainmentand/orremoval,willbeimplementedpriortodemolitionorrenovation.AnycomponentscontainingPCBs,di(2‐ethylhexyl)phthalate(DEHP),ormercurywillalsoberemovedanddisposedofproperly.



42

March 2014

ICF 00122.11

GEO-MM-1: Land Subsidence Monitoring, Investigation, and Repair

TheFinalEIRidentifiesthisasarecommended,butnotrequired,measure.TheWaterBoardrecommendsthatPG&Eimplementthismeasure,butisnotmandatingitsimplementationasthesourceimpactwasidentifiedaslessthansignificantintheEIR.IfPG&Echoosestoimplementthismeasure,theWaterBoardwouldrequestreportingasdescribedbelow.

ImplementationTiming: Priortoandduringremedial‐inducedgroundwaterdrawdown

ImplementationResponsibility: PG&EwithlandownerandqualifiedexpertapprovedbyWaterBoard


FrequencyofMonitoring: Recommendedatleasteverythreeyears

FrequencyofReporting: Recommendedannually:AnnualReport

StandardforCompletionorCompliance: NotApplicable/Measureisvoluntary

AgencyVerificationofCompletionorCompliance: NotApplicable/Measureisvoluntary

Mitigation Measure:

ItisrecommendedthatPG&EmonitorgroundwaterdrawdownperMitigationMeasureWTR‐MM‐2.Inallareasofpredictedgroundwaterdrawdown,PG&Eshoulddocumentexistinggroundsurfaceelevationspriortoremedial‐induceddrawdown.Asdrawdownoccurs,PG&Eshouldmonitorsurfaceelevationsevery3years,ataminimum,inordertodocumentwhetherlandsubsidencemaybeoccurring.Surveysshouldbedoneonalllandsaffectedbygroundwaterdrawdownofmorethan10feetwhereverallowedbylandowners.InitialandperiodicelevationsurveysshouldbeprovidedtotheWaterBoardforreview.

Wherechangesingroundsurfaceelevationsgreaterthan1footareidentifiedorwherestructuraldamageisidentifiedbyPG&Eorreportedbyalandowner,PG&Eshouldinvestigatesitestructuresforsubsidence‐relateddamage.IfdamageisidentifiedbyPG&Eand/orlandowners,PG&EshouldretainaqualifiedexpertapprovedbytheWaterBoardtoevaluatewhetherthedamageisduetoremedial‐inducedgroundwaterdrawdown.Iftheexpertdeterminesthatthedamageisduetoremedial‐inducedgroundwaterdrawdown,thenPG&EshouldidentifyproposedremedialactionstotheWaterBoardand,onceapprovedbytheWaterBoard,shouldrepair,replace,and/orreimburseforanydamagedstructures(e.g.,buildings,garages,barns)orinfrastructure(e.g.,pipelines,septicsystems,supplywells).



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March 2014

ICF 00122.11

GEO-MM-2: Emergency Response Plan for Potential Remedial Pipeline or Storage Tank Rupture

ImplementationTiming: Priortooperationofremedialpipelineorstoragetank



FrequencyofMonitoring: Priortooperationofremedialpipelineorstoragetank


StandardforCompletionorCompliance: Priortooperationofremedialpipelineorstoragetank:CompletionofEmergencyResponsePlan,asasectioninthetreatmentsystemoperation&maintenancemanualand/orHealthandSafetyPlan.



Mitigation Measure:

PG&Ewillprepareasectioninthetreatmentsystemoperationandmaintenance(O&M)manualand/orHealthandSafetyPlan(HASP)thatdescribesthespecificprocedurestobefollowedinamajorseismicevent,including:

Shut‐downofremedialpumping.

Visualinspectionofprojectpipelinesandabove‐groundtankstodetermineifanyleakagehasoccurred.

Spillcontainmentandrecoveryproceduresforanychemicalsthatmayhavespilledfromprojectpipelinesorabovegroundtanks.

Pressuretestofprojectpipelinesorabove‐groundstoragetankstodetermineintegritypriortoresumingsystemoperation.

CommunicationrequirementsfornotifyingtheWaterBoardofspillsandreleaseswillbespecifiedintheWaterBoard’sWasteDischargeRequirements(WDRs)fortheproject.



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March 2014

ICF 00122.11

AIR-MM-1: Utilize Clean Diesel-Powered Equipment during Construction

ImplementationTiming: Duringconstruction



FrequencyofMonitoring: Monthlywhenconstructionequipmentisoperating


StandardforCompletionorCompliance: Duringconstruction:Fieldreportconfirmingappropriateequipmentisbeingused.


AgencyVerificationofCompletionorCompliance: __________________________________________________________________

Mitigation Measure:

PG&Eortheircontractorwillensurethatalloff‐roaddiesel‐poweredequipmentusedduringconstructionwillbeequippedwithanEPATier4Interimengine,andanEPATier4Finalorcleanerenginewhenavailable,exceptforspecializedconstructionequipmentinwhichanEPATier4engineisnotavailable.ThiswillachievetheemissionreductionscomparedtoanaverageTier2engineshowninTable3.5‐18(SouthCoastAirQualityManagementDistrict2010).Forpurposesofaconservativeanalysis,mitigatedreductionsassumethelowestoftheNOXFinal(93%),reactiveorganicgases(42%),andparticulatematter(90%)reductionsappliedtoalloff‐roadequipment.NotethatTier4standardsforcarbonmonoxideareunchangedfromTier2.Therefore,therewillbenocarbonmonoxidereductionsassociatedwithTier4standardsherein.

Table 3.5-18. Off-Road Engine Emission Rates, Percent Reductions from Tier 2 to Tier 4 Interim and Tier 4 Final Engines

EngineSize(horsepower)

PercentEmissionsReductionTier2toTier4InterimandTier4Final

NOX(Interim) NOX(Final) ROG PM

75–99 53 94 50 95

100–174 46 94 43 93

175–299 68 94 43 90

300–600 67 93 42 90

Source:SouthCoastAirQualityManagementDistrict2010.

Italicvaluesindicatethepercentreductionsassumedinthemitigatedanalysis.

Notethattheoff‐roadenginereductionsshownhereinaresummarizedbySCAQMD,butarebasedonARBandEPAstandardsfordieselequipment.Therefore,whiletheproposedprojectareaisnotwithinSCAQMDjurisdiction,thereductionshereinareapplicabletotheproposedprojectalternatives.



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March 2014

ICF 00122.11

AIR-MM-2: Ensure Fleet Modernization for On-Road Material Delivery and Haul Trucks during Construction




FrequencyofMonitoring: Monthlywhenconstructionequipmentisoperating


StandardforCompletionorCompliance: Duringconstruction:Fieldreportconfirmingappropriateequipmentisbeingused.



Mitigation Measure:

PG&Eoritscontractorwillensurethatallon‐roadheavy‐dutydieseltrucksusedduringconstructionwithagrossvehicleweightrating(GVWR)19,500poundsorgreater,includingthoseforallmaterialdeliveriesandsoilhauling,willcomplywithEPA2007on‐roademissionstandardsforPM10andNOX(0.01gramsperbrakehorsepower‐hour[g/bhp‐hr]and0.20g/bhp‐hr,respectively).

TheaboveEPAStandardsmeasureswillbemet,unlessoneofthefollowingcircumstancesexists,andthecontractorisabletoprovideproofthatanyofthesecircumstancesexists:

ApieceofspecializedequipmentisunavailableinacontrolledformwithinthestateofCalifornia,includingthroughaleasingagreement.(“Controlledform”referstoanequipmentpiecethathasemission‐controltechnologyincluded.)

Acontractorhasappliedfornecessaryincentivefundstoputcontrolsonapieceofuncontrolledequipmentplannedforuseontheproposedproject,buttheapplicationisnotyetapproved,ortheapplicationhasbeenapproved,butfundsarenotyetavailable.

Acontractorhasorderedacontroldeviceforapieceofequipmentplannedforuseontheproposedproject,orthecontractorhasorderedanewpieceofcontrolledequipmenttoreplacetheuncontrolledequipment,butthatorderhasnotbeencompletedbythemanufacturerordealer.Inaddition,forthisexemptiontoapply,thecontractormustattempttoleasecontrolledequipmenttoavoidusinguncontrolledequipment,butnodealerwithin200milesoftheproposedprojecthasthecontrolledequipmentavailableforlease.



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March 2014

ICF 00122.11

AIR-MM-3: Implement Emission-Reduction Measures during Construction

ImplementationTiming: Priortoandduringconstruction



FrequencyofMonitoring: Beforeconstruction:Uponcompletionofconstructionspecifications

Duringconstruction:Monthlywhenconstructionequipmentisoperating


StandardforCompletionorCompliance: Beforeconstruction:Completeconstructionspecifications.

Duringconstruction:Fieldreportconfirmingappropriateequipmentisbeingused.


AgencyVerificationofCompletionorCompliance: ____________________________________________________________

Mitigation Measure:

PG&Eoritscontractorwillincludethefollowingemission‐reducingmeasuresintheconstructionspecificationstoensureimplementationduringconstruction.

Haulanddeliverytruckidlingtimeswillbeminimizedeitherbyshuttingequipmentoffwhennotinuseorreducingthemaximumidlingtimetolessthan3minutes(greaterthanthatrequiredbytheCaliforniaairbornetoxicscontrolmeasure,13CCR2485).Clearsignagewillbeprovidedforconstructionworkersatallaccesspoints.

Allconstructionequipmentwillbemaintainedandproperlytunedinaccordancewithmanufacturer’sspecifications.Allequipmentwillbecheckedbyacertifiedmechanicanddeterminedtoberunninginproperconditionpriortooperation.



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ICF 00122.11

AIR-MM-4: Implement Dust Control Measures during Construction and Operations

ImplementationTiming: Priortoandduringconstructionandoperation

ImplementationResponsibility: PG&EortheircontractorwithMDAQMD

MonitoringResponsibility: WaterBoardwithMDAQMD

FrequencyofMonitoring: Beforeconstruction:Uponcompletionofconstructionspecifications

Beforeoperation:UponcompletionofOperations&Maintenancemanual

Duringconstruction:Monthly

Duringoperation:Annually


StandardforCompletionorCompliance: Beforeconstruction:Approvedconstructionspecifications

Beforeoperation:ApprovedOperations&Maintenancemanual

Duringconstructionandoperation:Fieldreportconfirmingappropriatemeasuresarebeingimplemented



Mitigation Measure:

PG&EoritscontractorwillincludethefollowingdustcontrolmeasuresperMDAQMDRule403.2intheconstructionspecificationstoensureimplementationduringconstructionandintheOperations&Maintenancemanualtoensureimplementationduringoperation.

Useperiodicwateringforshort‐termstabilizationofdisturbedsurfaceareatominimizevisiblefugitivedustemissions.Forpurposesofthisrule,useofawatertrucktomaintainmoistdisturbedsurfacesandactivelyspreadwaterduringvisibledustingepisodeswillbeconsideredsufficienttomaintaincompliance.

Takeactionssufficienttopreventproject‐relatedtrackoutontopavedsurfaces.

Coverloadedhaulvehicleswhileoperatingonpubliclymaintainedpavedsurfaces.

Stabilizegradedsitesurfacesuponcompletionofgradingwhensubsequentdevelopmentisdelayedorexpectedtobedelayedmorethan30days,exceptwhensuchadelayisattributabletoprecipitationthatdampensthedisturbedsurfacesufficientlytoeliminatevisiblefugitivedustemissions.

Cleanupproject‐relatedtrackoutorspillsonpubliclymaintainedpavedsurfaceswithin24hours.



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ICF 00122.11

Reducenonessentialearth‐movingactivityunderhighwindconditions.Forpurposesofthisrule,areductioninearth‐movingactivitywhenvisibledustingoccursfrommoistanddrysurfacesfromwinderosionwillbeconsideredsufficienttomaintaincompliance.

Additionally,projectsdisturbingmorethan100acresperdaywillcomplywiththefollowingrules,alsotobeincludedintheconstructionspecificationsandtheOperations&Maintenancemanual.

PrepareandsubmittotheMDAQMD,priortocommencingearth‐movingactivity,adustcontrolplanthatdescribesallapplicabledustcontrolmeasuresthatwillbeimplementedattheproject.Withrespecttotheproposedproject,itwasassumedthatspecificdustcontrolmeasureswouldincludelimitingtravelspeedsto15milesperhouronunpavedroads,wateringexposedsurfacesthreetimesdaily,andapplyingsoilstabilizerstoinactiveareas.

Providestabilizedaccessroute(s)totheprojectsiteassoonasisfeasible.Forpurposesofthisrule,assoonasisfeasiblewillmeanpriortothecompletionofconstruction/demolitionactivity.

Maintainnaturaltopographytotheextentpossible.

Constructparkinglotsandpavedroadsfirst,wherefeasible.

Constructupwindportionsofprojectfirst,wherefeasible.



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March 2014

ICF 00122.11

AIR-MM-5: Utilize Clean Diesel-Powered Equipment for Operation of Agricultural Treatment (Alternative 4C-4 only)

ImplementationTiming: Duringoperations



FrequencyofMonitoring: Duringoperation:Annuallytoensureappropriateequipmentinuse


StandardforCompletionorCompliance: Duringoperation:Fieldreportconfirmingappropriateequipmentisbeingused.


AgencyVerificationofCompletionorCompliance: ___________________________________________________________________

Mitigation Measure:

PG&Eoritscontractorwillensurethatalloff‐roaddiesel‐poweredequipmentusedduringoperationsofagriculturallandtreatment(Alternative4C‐4only)willbeequippedwithanEPATier4InterimorFinalorcleanerengine,exceptforspecializedconstructionequipmentinwhichanEPATier4engineisnotavailable.Thiswillbeincludedintheconstructionspecifications.



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March 2014

ICF 00122.11

AIR-MM-6: Implement San Bernardino County GHG Construction Standards during Construction


ImplementationResponsibility: PG&EwithSanBernardinoCounty

MonitoringResponsibility: WaterBoardwithSanBernardinoCounty

FrequencyofMonitoring: Monthly

FrequencyofReporting: Priortoconstruction:submittalofcomplianceplan

Monthlyduringconstruction

Annually:AnnualReport

StandardforCompletionorCompliance: Priortoconstruction:Submittalofagreementtoconditioncontracts.

Duringconstruction:ReportormemorandumofevidencedocumentingthatallapplicableGHGperformancestandardshavebeeninstalledandimplementedproperly,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuildingandSafety.



Mitigation Measure:

PG&EoritscontractorwillsubmitasignedlettertoSanBernardinoCountyandtheWaterBoardagreeingtoincludeasaconditionofallconstructioncontracts/subcontractsrequirementstoreduceGHGemissionsandsubmitdocumentationofresultsforallactionalternatives.PG&Eoritscontractorwilldothefollowing:

ImplementaCounty‐approvedCoatingRestrictionPlan,asapplicable.

SelectconstructionequipmentbasedonlowGHGemissionsfactorsandhigh‐energyefficiency.Wherefeasible,diesel‐/gasoline‐poweredconstructionequipmentwillbereplaced,withequivalentelectricorcompressednaturalgas(CNG)equipment.

BecauseitmaynotbefeasibletouseelectricorCNGequipmentpertheCountyperformancestandard,theprojectwillusebiodieselfuelifthefollowingapplies:

Biodieselfuelbecomesavailablewithin20milesoftheprojectsite.

TheCaliforniaAirResourcesBoardhascertifiedthatthelocallyavailablebiodieselresultsinreductionofGHGemissions.

Biodieselfuelisapprovedbythemanufacturerforuseindieseltrucksorequipmentusedforremedialactivities,includingfarmequipmentandconstructionequipment.



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March 2014

ICF 00122.11

Thecostofbiodieselisnotmorethan125%abovethepriceofregulardieselfuel,then

Asbiodieselcomesinblendedamounts(B5=5%biodiesel;B20=20%biodiesel;B100=100%biodiesel),PG&Ewillusethehighestbiodieselblendthatisapprovedforuseinsitetrucksorequipment,available,andwithinthepricelimitationnotedabove.

Gradingcontractorwillimplementthefollowingwhenpossible:

Trainingoperatorstouseequipmentmoreefficiently.

IdentifyingthepropersizeequipmentforataskcanalsoprovidefuelsavingsandassociatedreductionsinGHGemissions.

Replacingolder,lessfuel‐efficientequipmentwithnewermodels.

Usingglobalpositioningsystem(GPS)forgradingtomaximizeefficiency.

Gradingplanswillincludethefollowingstatements:

“Allconstructionequipmentengineswillbeproperlytunedandmaintainedinaccordancewiththemanufacturersspecificationspriortoarrivingonsiteandthroughoutconstructionduration.”

“Allconstructionequipment(includingelectricgenerators)willbeshutoffbyworkcrewswhennotinuseandwillnotidleformorethan5minutes.”

Recycleandreuseconstructionanddemolitionwaste(e.g.,soil,vegetation,concrete,lumber,metal,andcardboard)perCountySolidWasteprocedures.

Educateallconstructionworkersabouttherequiredwastereductionandtheavailabilityofrecyclingservices.

PG&EoritscontractorwillsubmitforreviewandobtainapprovalfromCountyPlanningofevidencethatallapplicableGHGperformancestandardshavebeeninstalledandimplementedproperly,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuildingandSafety.



52

March 2014

ICF 00122.11

AIR-MM-7: Implement San Bernardino County GHG Operational Standards for Operations

ImplementationTiming: Duringoperationofremedialactivities



FrequencyofMonitoring: Periodically,asdeterminedbyCountyPlanning


StandardforCompletionorCompliance: Periodically:Reportormemorandumofevidence,reviewedandapprovedbyCountyPlanning,thatallapplicableGHGperformancestandardsarebeingemployed,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuilding&Safety.

Annually:AnnualReportwithmemorandumofevidence.


Mitigation Measure:

PG&EoritscontractorwillimplementthefollowingasGHGmitigationduringtheoperationoftheapprovedprojectforallactionalternatives.

WasteStreamReduction.PG&EwillprovidetoallemployeesCounty‐approvedinformationalmaterialsaboutmethodsandtheneedtoreducethesolidwastestream,withalistofavailablerecyclingservices.Theeducationandpublicitymaterials/programwillbesubmittedtoCountyPlanningforreviewandapproval.

LandscapeEquipment.Iflandscapingisaddedfortheabove‐groundtreatmentfacilities,PG&Ewillrequirethataminimumof20%ofthelandscapemaintenanceequipmentwillbeelectric‐powered.

BiodieselFuel.Becausetherearelimitedtonooptionstoreducevehicleemissionsgiventheremotelocationofthesite,PG&EwillusebiodieselinoperationswhenthefollowingconditionsapplyasanalternativemeanstoreduceGHGemissions:

Biodieselfuelbecomesavailablewithin20milesoftheprojectsite.

TheCaliforniaAirResourcesBoardhascertifiedthatthelocallyavailablebiodieselresultsinreductionofGHGemissions.

Biodieselfuelisapprovedbythemanufacturerforuseindieseltrucksorequipmentusedforremedialactivities,includingfarmequipmentandconstructionequipment.

Thecostofbiodieselisnotmorethan125%abovethepriceofregulardieselfuel,then

Asbiodieselcomesinblendedamounts(B5=5%biodiesel;B20=20%biodiesel;B100=100%biodiesel),PG&Ewillusethehighestbiodieselblendthatisapprovedforuseinsitetrucksorequipment,available,andwithinthepricelimitationnotedabove.



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PG&EwillsubmitforreviewandobtainapprovalfromtheSanBernardinoCountyPlanningDepartmentofevidencethatallapplicableGHGperformancestandardsarebeingemployed,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuildingandSafety.



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AIR-MM-8: Implement San Bernardino County GHG Design Standards

ImplementationTiming: Priortooperationofabovegroundtreatmentplants


MonitoringResponsibility: WaterBoardwithSanBernardinoCounty

FrequencyofMonitoring: Priortotheoperationofabovegroundtreatmentplants

FrequencyofReporting: Oncepriortooperation

StandardforCompletionorCompliance: Onlyappliestoabovegroundtreatmentplants,ifproposed.

Priortooperation:ReportormemorandumofevidencethatallapplicableGHGperformancestandardshavebeeninstalledandimplementedproperly,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuildingandSafety.Ifanyalternativeisconfirmedtobemorethan3,000MTCO2eperyear,reportormemorandumofevidencethatemissionsarebeingreducedbyrequiredamounts(anticipatedtobeatleast31%).

AgencyVerificationofCompletionorCompliance: _________________________________________________________________

Mitigation Measure:

PG&EwillsubmitforreviewandobtainapprovalfromCountyPlanningthatthefollowingmeasureshavebeenincorporatedintothedesignoftheproject,asapplicable.TheseareintendedtoreducepotentialprojectGHGsemissions.ProperinstallationoftheapproveddesignfeaturesandequipmentwillbeconfirmedbyCountyBuildingandSafetypriortofinalinspectionofeachstructure.

1. Title24+5%.PG&Ewilldocumentthatthedesignoftheproposedabove‐groundtreatmentstructuresexceedthecurrentTitle24energy‐efficiencyrequirementsbyaminimumof5%.CountyPlanningwillcoordinatethisreviewwithCountyBuildingandSafety.Anycombinationofthefollowingdesignfeaturesmaybeusedtofulfillthismitigation,providedthatthetotalincreaseinefficiencymeetsorexceedsthecumulativegoal(105%+ofTitle24)fortheentireproject(Title24,Part6oftheCaliforniaCodeofRegulations;EnergyEfficiencyStandardsforResidentialandNonResidentialBuildings,asamendedOctober1,2005;CoolRoofCoatingsperformancestandardsasamendedSeptember11,2006):

a. Incorporatedualpanedorotherenergyefficientwindows.

b. Incorporateenergyefficientspaceheatingandcoolingequipment.

c. Incorporateenergyefficientlightfixtures,photocells,andmotiondetectors.

d. Incorporateenergyefficientappliances.

e. Incorporatesolarpanelsintotheelectricalsystem.

f. Incorporatecoolroofs/lightcoloredroofing.



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g. Incorporateothermeasuresthatwillincreaseenergyefficiency.

h. Increaseinsulationtoreduceheattransferandthermalbridging.

i. Limitairleakagethroughoutthestructureandwithintheheatingandcoolingdistributionsystemtominimizeenergyconsumption.

2. Plumbing.Allplumbingwillincorporatethefollowing:

3. Allshowerheads,lavatoryfaucets,andsinkfaucetswillcomplywiththeCaliforniaEnergyConservationflowratestandards.

a. LowflushtoiletswillbeinstalledwhereapplicableasspecifiedinCaliforniaStateHealthandSafetyCodeSection17921.3.

b. Allhotwaterpipingandstoragetankswillbeinsulated.Energyefficientboilerswillbeused.

4. Lighting.Lightingdesignforbuildinginteriorswillsupporttheuseofthefollowing:

a. Compactfluorescentlightbulbsorequivalentlyefficientlighting.

b. Naturaldaylightingthroughsiteorientationandtheuseofreflectedlight.

c. Skylight/roofwindowsystems.

d. Lightcoloredbuildingmaterialsandfinishesthatreflectnaturalandartificiallightwithgreaterefficiencyandlessglare.

e. Amulti‐zoneprogrammabledimmingsystemtocontrollightingandmaximizetheenergyefficiencyoflightingrequirementsatvarioustimesoftheday.

f. Onsitesolarpanelsthatprovideaminimumof2.5%oftheproject’selectricityneeds.

5. BuildingDesign.Buildingdesignandconstructionwillincorporatethefollowingelements:

a. Orientbuildinglocationstobestutilizenaturalcooling/heatingwithrespecttothesunandprevailingwinds/naturalconvectiontotakeadvantageofshade,daylighting,andnaturalcoolingopportunities.

b. Utilizenatural,lowmaintenancebuildingmaterialsthatdonotrequirefinishesandregularmaintenance.

c. Installroofingmaterialsthathaveasolarreflectanceindexof78orgreater.

d. Sealandleaktestallsupplyductwork.Useovalorroundductsforatleast75%ofthesupplyductwork,excludingrisers.

e. InstallEnergyStarorequivalentappliances.

f. Controlheating,vent,andairconditioningunitswithabuildingautomationsystemthatincludesoutdoortemperature/humiditysensors.

6. Landscaping.Iflandscapingisusedattheabove‐groundtreatmentfacilities,PG&EwillsubmitforreviewandobtainapprovalfromCountyPlanninglandscapeandirrigationplansthataredesignedtoincludedroughttolerantandsmogtoleranttrees,shrubs,andgroundcovertoensuretheirlong‐termviabilityandtoconservewaterandenergy.Iftheabove‐groundtreatmentfacilitiesareheated



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orcooled,thenthelandscapeplanswillincludeshadetreesaroundmainbuildings,particularlyalongsouthernandwesternelevations,ifpractical.

7. Irrigation.PG&Ewilllimitirrigationusedforagriculturaltreatmenttotheminimumnecessarytosupportremedialaction.

8. Recycling.Exteriorstorageareasforrecyclablesandgreenwastewillbeprovided.Whererecyclingpickupisavailable,adequaterecyclingcontainerswillbelocatedinpublicareas.Constructionandoperationwastewillbecollectedforreuseandrecycling.

PG&EwillworkwithCountyPlanningandsubmitanyrequiredreportsforevidencethatallapplicableGHGperformancestandardshavebeeninstalledandimplementedproperly,andthatspecifiedperformanceobjectivesarebeingmettothesatisfactionofCountyPlanningandCountyBuildingandSafety.

Ifanyalternativeisconfirmedtobemorethan3,000MTCO2eperyear,theninsteadoftherequirementsaboveinMitigationMeasureAIR‐MM‐7andtherequirementsdescribedabove,PG&Ewillberesponsibletoreduceemissionsbyatleast31percent.Inthiscase,PG&EwillworkwithCountyPlanningandsubmitanyrequiredevidencethatemissionswillbereducedbyrequiredamounts,anticipatedtobeaminimumof31percent.



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NOI-MM-1: Prepare a Noise/Vibration Control Plan and Employ Noise/Vibration-Reducing Construction Practices to Comply with County Noise Standards




FrequencyofMonitoring: Beforeconstruction:Once,priortotheinitiationofconstructionactivities.

Duringconstruction:Monthly


Priortoconstruction:Oncepriortotheinitiationofconstructionactivities

StandardforCompletionorCompliance: Beforeconstruction:ConstructionspecificationswithmeasuressubmittedtoWaterBoard

Duringconstruction:PeriodicfieldreviewverifyingcontrolmeasuresarebeingimplementedtoreducenoiseandvibrationtoalevelthatisincompliancewithCountynoisestandards.

Annually:AnnualReportwithannualsummaryofmonitoringandreportingactivities,includingallfieldreportsorafinalsummaryreport.


Mitigation Measure:

PG&Eoritscontractorwillensurethatnoise/vibration‐reducingconstructionpracticesareimplementedsothatconstructionnoisedoesnotexceedapplicableCountystandards.Aspartoftheconstructionspecifications,theprojectcontractorwillidentifyfeasiblemeasuresthatcanbeemployedtoreduceconstructionnoise/vibration.Thesemayincludethemeasureslistedbelow.

Schedulingsubstantialnoise‐generating/vibrationactivityduringexemptdaytimehours

Requiringconstructionequipmenttobeequippedwithfactory‐installedmufflingdevicesandallequipmenttobeoperatedandmaintainedingoodworkingordertominimizenoisegeneration

Locatingnoise/vibration‐generatingequipmentasfaraspracticalfromnoise‐sensitiveusesincludingavoidingvibration‐generationwithin25feetofanyresidence,whereverfeasible

Usingtemporarynoise/vibration‐reducingenclosuresaroundnoise‐generatingequipment

Placingtemporarybarriersbetweennoise/vibrationsourcesandnoise‐sensitivelandusesortakingadvantageofexistingbarrierfeatures(e.g.,terrain,structures,edgeoftrench)toblocksoundtransmission



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Pertheconstructionspecifications,controlmeasureswillbeimplementedtoreducenoiseandvibrationtoalevelthatisincompliancewithCountynoisestandards.



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BIO-MM-1a: Implement Measures to Minimize, Reduce, or Mitigate Impacts on Desert Tortoise during Construction


ImplementationResponsibility: PG&Ewithauthorizedbiologist,CDFW,USFWS

MonitoringResponsibility: Field:Authorizedbiologist(hiredbyPG&E)

Overall:WaterBoard

FrequencyofMonitoring: Daily

FrequencyofReporting: Beforeconstruction:SurveyReports

Duringconstruction:Immediatereportingofsightings/injuries/mortalities


StandardforCompletionorCompliance: Beforeconstruction:Submittalsofdeserttortoisefocusedsurveyresultsreport;deserttortoisepreconstructionclearancesurveyresultletterreport;deserttortoisetranslocationplanreport,ifrequired,tobeapprovedbyCDFWandUSFWS;documentationwheredeserttortoisefencingwasinstalled,ifrequired.

Duringconstruction:Mapandimmediatereporting(within24hours)ofdeserttortoisesightingsandanyinjuries/fatalitiesplusanannualreportsummary;dailybiologicalconstructionmonitoringbyaUSFWSandCDFWauthorizedbiologistandsubmittalforreportingwouldconsistofadailymonitoringlog.



Mitigation Measure:

Thefollowingmeasuresshallbeimplementedtoreduceconstructionimpactstothedeserttortoise.ThesemeasuresshallbeimplementedinamannerconsistentwithanyincidentaltakeauthorizationissuedbyCDFWandUSFWS.IftherequirementsbelowexceedthoserequiredbyCDFWorUSFWS,theyshallstillbeimplementedunlesstheydirectlyconflictwithorimpedetherequirementsofCDFWorUSFWS.

Protocol‐levelsurveysfordeserttortoisewilloccurpriortoconstructioneitherinAprilthroughMayorSeptemberthroughOctoberperthemostrecentprotocolissuedbytheUSFWS(U.S.FishandWildlifeService2010b).Thesurveyswillbeconductedintheareaproposedtobedisturbedbytheprojectand1,500metersfromtheedgeoftheproposeddisturbanceareatoconfirmtheuseofthatareabydeserttortoise.AnyvariationfromthisprotocolwouldrequireapprovalbyUSFWSandCDFW.Areportwillbepreparedattheendofeachsurveyperiod.



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Apreconstructionclearancesurveywillbecompletedfordeserttortoisewithineachprojectareatoensurethatalltortoiseareabsent,orthatanytortoisesthatpresentaremovedoffsiteandoutofharm’swayperthemostrecentprotocolissuedbytheUSFWS(currentlythisisUSFWS2009).Theprotocol(USFWS2009)statesthattwoconsecutivesurveyswouldbeconductedimmediatelypriortosurfacedisturbanceateachsitewithintheprojectarea.

Deserttortoisefoundwithintheconstructionareaswillbeeitherallowedtomovepassivelyawayorbephysicallyrelocatedbyanauthorizedhandlertoalocationoutofharm’sway,butwithintheirhomerange(definedbyUSFWS2009aslessthan1,000feet).Ifrelocatingdeserttortoise,atranslocationplanwillneedtobeapprovedbyCDFWandUSFWS.

Wherepossible,deserttortoiseexclusionfencingwillbeplacedalongtheperimeteroftheproposedworkareaspriortosurfacedisturbancetopreventencounterswithdeserttortoiseduringconstructionactivities.ThespecificationsofthedeserttortoiseexclusionfencingwillfollowUSFWS(DesertTortoiseFieldManual:Chapter8.DesertTortoiseExclusionFence2009c).Dailypreconstructionsweepswithintheproposedprojectareawillbeconductedbeforeconstructiontoensurethatdeserttortoiseareabsentfromtheprojectarea.Deserttortoiseexclusionfencingwillalsobeplacedaroundallpermanentbuildingsandstructureswhereentrapmentornegativeinteractionswithtortoisescouldoccur.

AlldeserttortoisesightedwithintheproposedprojectareamustbeimmediatelyreportedandconstructionactivityjeopardizingthetortoisemustbehalteduntiltheapprovedUSFWSandCDFWbiologistisabletorelocatetheanimal.Ifadeserttortoiseisinjuredorkilled,theauthorizedbiologistmustbenotified,theinjuryordeathdocumented,andtheanimaltakentoaqualifiedveterinarianorthecarcassremovedbythebiologist.

AnannualreportsubmittedtoCDFWandUSFWSwilldocumentdeserttortoiseseen,injured,killed,excavated,and/orhandled,alongwithallpertinentdetails.

Ongoingconstructionmonitoringwillensurethatdeserttortoiseobservedwithin100feetofconstructionareactivelymonitoredforanegativequalitativeresponsefromvibration.

AnyauthorizedbiologistneedstobeapprovedbyUSFWSandCDFW,andanymonitorsneedtobeapprovedbyCDFW.



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BIO-MM-1b: Limit Footprint of Disturbance Areas within Special-Status Species Habitats


ImplementationResponsibility: PG&Ewithauthorizedbiologistorenvironmentalmonitor

MonitoringResponsibility: Field:Authorizedbiologistorenvironmentalmonitor

Overall:WaterBoard

FrequencyofMonitoring: Beforeconstruction:Documentationofprojectfootprintreviewanddelineatedworkareas

Duringconstruction:Dailybiologicalmonitoringlogs


StandardforCompletionorCompliance: Beforeconstruction:Documentationofthebiologistworkingwiththedesign/constructionteamshowingthatprojectfootprintswerereducedtoavoidspecial‐statusspecieshabitatormovedtooverlappreviouslydisturbedareas;thiswillincludeoriginaldraftworkareasassubmittedandfinalized,fieldverified,workareas.Otherdocumentationshallbeintheformoffocusedsurveyreportsthatshowthatworkareasweredelineatedinthefieldtoavoidanyenvironmentallysensitiveareas.

Duringconstruction:Biologicalmonitoringlogsthatshowworkoccurredwithindelineatedareasandenvironmentallysensitiveareaswereavoided.



Mitigation Measure:

Theareaofdisturbancewillbeconfinedtothesmallestpracticalarea,consideringtopography,placementoffacilities,locationofoccupieddeserttortoise,Mohavegroundsquirrel,andburrowingowlhabitat,publichealthandsafety,andotherlimitingfactors,andwillbelocatedinpreviouslydisturbedareastotheextentpossible.AnAuthorizedBiologistorEnvironmentalMonitorwillassisttheprojectforemaninlocatingsuchareastoavoiddeserttortoise,Mohavegroundsquirrel,andburrowingowlmortality,minimizeimpactstohabitat,andensurecompliancewiththismeasureandotherpertinentregulatorydocuments.Inareaswheretheprojectsponsorisunabletoinstallexclusionaryfencing,workareaboundariesandaccessroadswillbedelineatedwithflaggingorothermarkingtominimizesurfacedisturbanceoutsideoftheapprovedworkarea.Alldisturbancelimitsneedtobeconfirmedbytheconstructionmonitor.Specialhabitatfeatures,suchasburrows,identifiedbytheAuthorizedBiologistwillbeavoidedtotheextentpossible.



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BIO-MM-1c: Implement Pre-Construction and Ongoing Awareness and Training Program


ImplementationResponsibility: PG&Ewithauthorizedbiologistorenvironmentalmonitor


Overall:WaterBoard

FrequencyofMonitoring: Beforeandduringconstructionasneeded:Traininglogdocumentingnewcontractorsonsitereceivedtraining(maybeasfrequentlyasdaily).


StandardforCompletionorCompliance: Beforeconstructionandasneeded:TraininglogdocumentingthatanynewcontractorsonsitereceivedthestandardAwarenessandTrainingProgrampresentedbyabiologistandincludingthesign‐insheet.Ahardhatstickerwillbeworntoverifytheworkhascompletedtraining.



Mitigation Measure:

Allemployees,subcontractors,andotherswhoworkon‐sitewillparticipateinadeserttortoise,Mohavegroundsquirrel,burrowingowl,Americanbadger,MojaveRivervole,desertkitfox,andsensitiveplantspeciesawarenessprogrampriortoinitiationofconstructionactivities.PG&Eisresponsibleforensuringthattheawarenessprogramispresentedpriortoconductingactivities.Hardhatstickerstoidentifypersonnelwhohaveattendedthetrainingandwallet‐sizedcardslistingkeybestmanagementpracticesarerequired.Ataminimum,theawarenessprogramwillemphasizethefollowinginformationrelativetothesespecies:(a)distributiononthejobsite;(b)generalbehaviorandecology;(c)sensitivitytohumanactivities;(d)legalprotection;(e)penaltiesforviolatingStateorfederallaws;(f)reportingrequirements;and(g)projectprotectivemitigationmeasures.TheAuthorizedBiologistand/orEnvironmentalMonitorwillworkwiththeprojectproponenttoensurethatallworkershavereceivedtheawarenessprogramandunderstandthevariouscomponents.Interpretationwillbeprovidedfornon‐Englishspeakingconstructionworkers.



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BIO-MM-1d: Conduct Ongoing Biological Monitoring during Construction


ImplementationResponsibility: PG&Ewithauthorizedbiologicalmonitors

MonitoringResponsibility: Field:Authorizedbiologicalmonitors

Overall:WaterBoard

FrequencyofMonitoring: Beforeandduringconstruction:DailyduringgrounddisturbanceandWeeklyafterclearing/grubbing


StandardforCompletionorCompliance: Beforeandduringconstruction:Allbiologicalconstructionmonitoringshallbedocumentedwiththecompletionandsubmittalofastandarddailybiologicalmonitoringlog.



Mitigation Measure:

BiologicalmonitorsapprovedbyCDFWwillconductdailyconstructionmonitoringofthedeserttortoiseexclusionfencing,aswellasduringclearingandgrubbing(initialgrounddisturbance)oftheworkarea.Biologicalmonitorswillbefamiliarwithdeserttortoise,Mohavegroundsquirrel,andburrowingowl,aswellasnestingbirds.Onceclearingandgrubbingiscomplete,abiologicalmonitorwillconduct,atminimum,weeklyspotcheckstodocumentcompliancewiththemitigationmeasurespresentedinthisEIRandelsewhere.Anon‐calldeserttortoisehandlerwillbeavailableshoulddeserttortoisebeencounteredduringconstructionactivities.



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BIO-MM-1e: Minimize Potential Construction Hazards to Special-Status Species




Overall:WaterBoard

FrequencyofMonitoring: Duringconstruction:Dailybiologicalmonitoringlog


StandardforCompletionorCompliance: Duringconstruction:Themeasuresbelowwillbeincludedascheckboxesonthestandarddailybiologicalmonitoringlog.Completionandsubmittaloftheselogswillshowwhethercompliancewiththesemeasureswasachieved.



Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimizeconstructionhazardstospecial‐statusspecies:7

Nohazardstospecial‐statusspecies,particularlydeserttortoise,suchasopentrenchesandholes,willbeleftovernightwithoutfencingorcovering,

Nofirearmsorpetswillbeallowedattheworkarea.Firearmscarriedbyauthorizedsecurityandlawenforcementpersonnelareexemptfromthistermandcondition.

Dustwillbecontrolled.Ifwatertrucksaretobeused,poolingofwaterwillbeavoidedsotominimizethepotentialtoattractingcommonravensorpotentialpredatorsofthedeserttortoise.

Exceptonpavedroadswithpostedspeedlimits,vehiclespeedswillnotexceed10milesperhourthroughdeserttortoiseandMohavegroundsquirrelhabitatduringtravelassociatedwiththeauthorizedactivity.

7IntroductorytextinitalicsaddedafterFinalEIR.



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BIO-MM-1f: Implement Measures to Minimize and Prevent Attraction of Predators during Construction and Operation

ImplementationTiming: Priortoandduringconstructionandoperation



Overall:WaterBoard

FrequencyofMonitoring: Beforeandduringconstructionandoperation:Daily

FrequencyofReporting: Priortoconstruction:RavenManagementPlan

Duringconstructionandoperation:Dailybiologicalmonitoringlog


StandardforCompletionorCompliance: Beforeconstruction:ARavenManagementPlan,whichincludesthemeasureslistedbelow,mustbepreparedandapproved.

Duringconstructionandoperation:ThedailybiologicalmonitoringlogwillincludethemeasuresidentifiedintheRavenManagementPlanascheckboxes.Completionandsubmittaloftheselogswillshowwhethercompliancewiththesemeasureswasachieved.


AgencyVerificationofCompletionorCompliance: ________________________________________________________________

Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimizeandpreventattractionofpredators:8

Littercontrolmeasureswillbeimplemented.Trashandfooditemswillbecontainedinclosedcontainersandremoveddailytoreducetheattractivenessortheareatoopportunisticpredatorssuchascommonravens(Corvuscorax),coyotes(Canislatrans),andferaldogs.

Ifwatertrucksaretobeused,poolingofwaterwillbeavoidedsotominimizethepotentialtoattractingcommonravensorotherpotentialpredators.

Potentialperchesandnestsubstratesforthecommonravenwillbereducedtothegreatestextentpracticablewithinpermanentprojectfacilities.

Aravenmanagementplanwillbedevelopedbytheprojectproponentthatwillincludeataminimumestablishingacommonravenpopulationpre‐remedialreferencelevel,withongoingandpost‐constructionmonitoringofcommonravenpopulations,andtriggersforadaptivemanagement




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actionsifravensareoccurringabovepre‐remedialconditionsandobservedtobeutilizingfacilitiesandstructuresbuiltaspartofthisproject.



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BIO-MM-1g: Reduction of Project-Related Spread of Invasive Plant Species

ImplementationTiming: Afterconstruction

ImplementationResponsibility: PG&Ewithqualifiedbiologist

MonitoringResponsibility: PlanReview:Qualifiedbiologist

Overall:WaterBoard

FrequencyofMonitoring: Periodically,witheachsubmittalofseeding,planting,and/orlandscapeplans


StandardforCompletionorCompliance: Periodically:Witheachsubmittalofseeding,plantingand/orlandscapeplans,abiologistwillsubmitamemorandumofevidencethattheplanswerereviewedandindicateifthereviewwassatisfactory.



Mitigation Measure:

Ifreseedingoftemporarydisturbanceareasorornamentallandscapingisproposed,theproposedseedpalettewillbereviewedbyabiologisttoensureitdoesnotcontainplantsthatareconsideredinvasiveinCalifornia(basedontheCaliforniaInvasivePlantInventoryDatabase).



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BIO-MM-1h: Compensate Impacts on Desert Tortoise and Mohave Ground Squirrel Habitat

ImplementationTiming: Mitigationamountdeterminedpriortodisturbanceofhabitat.

.Ataminimum,requiredcompensationshallbeacquired/implementedwithin3yearsofcorrespondinghabitatdisturbanceorasrequiredbyanynecessarypermits.

ImplementationResponsibility: PG&EwithUSFWS,CDFW

MonitoringResponsibility: CDFW,USFWS,WaterBoard

FrequencyofMonitoring: Beforeconstruction:Confirmmitigationamountsandtiming

Duringconstruction:Keepmitigationamountscurrent


StandardforCompletionorCompliance: Beforeandduringconstruction:Thismitigationcanbeimplementedinphasescorrespondingtothephasingofdisturbanceduetoremedialactivities.PG&Eshallprovideconfirmationthatmitigationcreditshavebeenpurchased,orthatrestoration,enhancement,and/orcreationcreditshavebeensecuredorprovidednolaterthan36monthsaftercorrespondinghabitatdisturbance.Ifpermittingisrequired,thentheCDFWand/orUSFWSshallprovidethisconfirmation.



Mitigation Measure:

CompensatorymitigationforthelossofdeserttortoiseandMohavegroundsquirrelhabitatwillbedeterminedthroughconsultationwithCDFWandUSFWS.TheminimumcompensationratiosformoderatetohighqualityhabitatsuitabletodeserttortoiseandMohavegroundsquirrelare3:1forpermanentimpactsand1:1fortemporaryimpacts(althoughnotemporaryimpactshavebeenidentified).ForimpactstolowqualitydeserttortoiseandMohavegroundsquirrelhabitat,theminimumcompensationratiois1:1forpermanentimpacts.TheminimumcompensationratioforimpactswithinaDesertWildlifeManagementArea(DWMA)is5:1forpermanentimpacts.Finalmitigationratioswillbedeterminedduringconsultationwiththeappropriateresourceagency,inaccordancewiththerequirementsofaSection7orSection10permitand/oraSection2081permit.Mitigationmayincludepurchase,restoration,enhancement,and/orcreationofdeserttortoiseandMohavegroundsquirrelhabitat.



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LandsprovidedasmitigationfordeserttortoiseandMohavegroundsquirrelmayalsobeusedtoprovidemitigationforanylossofburrowingowlhabitat,ifthelandinquestionincludessuitablehabitatfortheburrowingowl.



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BIO-MM-1i: Integrated Pest Management and Adaptive Management Plan for Agricultural Treatment Units

ImplementationTiming: Priortooperationofagriculturalunits(AU)


MonitoringResponsibility: Field:PG&E

Overall:WaterBoard

FrequencyofMonitoring: TobedeterminedintheIPM/AMPlan

FrequencyofReporting: BeforenewAUconstruction(IPM/AMPlan)


StandardforCompletionorCompliance: BeforenewAUconstruction:Completion,approval,andimplementationofanIntegratedPestManagementandAdaptiveManagementPlan(IPM/AUPlan).AchecklistorstandardformshouldbemadeoftheimplementableelementsoftheIPM/AUPlansothatcompliancemonitoringcanbecompleted.UpdatesoftheIPM/AUPlanneedtobemadefornewAUsasappropriate(ifconditionsorcontingenciesdifferfromAUtoAU).

Annually:AnnualReportwithcopyorverificationofIPM/AUPlan


Mitigation Measure:

Anagriculturalunitintegratedpestmanagement(IPM)planwillbedevelopedandimplementedforallnew(andexisting)agriculturalunits,andwillbecompliantwiththeCaliforniaStatewideIPMyear‐roundprogramforalfalfaandanyothercropsthatmaybeproposedforuse.Theplanwillexplicitlydetailanintegratedpestmanagementplantoensurethatrisksofanyproposeduseofherbicides,pesticides,orrodenticideswillposeanegligiblerisktowildlifespecies.Herbicides,pesticides,orrodenticideswillonlybeusedatnewagriculturalunitsifspecificallyauthorizedbyUSFWSandCDFWinthetakepermitsforthedeserttortoiseandtheMohavegroundsquirrel.Theadaptivemanagementplanwilldetailthepredictedharvestoftheagriculturalcropsandhowharvestwillbeconductedinsuchamannertoreducepotentialimpactstonestingbirds.Theadaptivemanagementplanwillprovideotherpopulationmonitoringguidelinesforpredatoryspeciessuchasbrown‐headedcowbird,withmanagementactionsthatwillberequirediffieldsarefoundtobesupportingthesespecies.Theadaptivemanagementplanwillalsooutlineirrigationcontroltoavoidpooledwater.



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BIO-MM-1j: Reduction of Night Light Spillover

ImplementationTiming: Priortodesignofanynightlightingfortheoperationofremedialactivities.


MonitoringResponsibility: Field:Qualifiedbiologist

Overall:WaterBoard

FrequencyofMonitoring: Priortooperation:Aplancheckthatshowstheamountofnightlightingspillover(LightingPlan)

FrequencyofReporting: Priortooperation:LightingPlan


StandardforCompletionorCompliance: Priortooperation:Forremedialactivitieswithexteriorlighting,abiologistwillconfirmthatthelightplanshavebeeninspectedandthatnightlightingspilloverhasbeenminimizedandisnotexpectedtoresultinindirectimpactstospecial‐statusspecies.Thiscanbeamemorandumofevidencepreparedbythebiologist.

Annually:AnnualReportwithmemorandumofevidence


Mitigation Measure:

Exteriorlightfixturesandstandardswillbedesignedtobefullyshielded,directinglightdownwardbelowthehorizontalplaneofthefixtureheight.Adetailedlightingplanwillbeinspectedbyabiologisttoensurethattheexpectedlightspilloverhasnopotentialtoimpactspecial‐statusspecies.



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BIO-MM-1k: Implement Other Measures to Minimize, Reduce, or Mitigate Impacts on Mohave Ground Squirrel


ImplementationResponsibility: PG&Ewithauthorizedbiologist

MonitoringResponsibility: Field:Authorizedbiologist

Overall:WaterBoard

FrequencyofMonitoring: Asneeded


Duringconstruction:DocumentationofOccurrences


StandardforCompletionorCompliance: Beforeconstruction:SubmittalofSurveyReportwithMohavegroundsquirrelfocusedsurveyresults.Ifgreaterthan180acresistobedisturbed,documentationofspecialsurveyprotocolsagreeduponbytheagenciesisrequired.

Duringconstruction:Documentoccurrenceswithmap/report(within24hours)ofMohavegroundsquirrelsightingsandanyinjuries/fatalities,plusanannualreportsummary.



Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimize,reduceandmitigateimpactsonMohavegroundsquirrel:9

AMohavegroundsquirrelfocusedprotocolsurveywillbecompletedpriortoconstructionintheprojectstudyareawhereconstructionisproposedfollowingprotocolestablishedbyCDFW(2003).Forhabitatlossofgreaterthan180acres,theDepartmentrequiresspecialsurveyprotocol(s)tobedevelopedthroughitsconsultationwitheithertheprojectproponentorthelocalleadagency(ifappropriate)orbothentities.

IfanyMohavegroundsquirrelsareuncoveredbyexcavationduringconstruction,workmuststopintheimmediateareaandtheprojectbiologistwillbeimmediatelynotified.

IfanyMohavegroundsquirrelsareinjuredorkilledduringthecourseofconstruction,workmuststopintheimmediateareaandtheprojectbiologistwillbeimmediatelynotified.Onlytheauthorizedbiologistwillhandle,andtransportinjuredanimaltoaqualifiedveterinarian.




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BIO-MM-1l: Implement Other Measures to Minimize, Reduce, or Mitigate Impacts on Burrowing Owl


ImplementationResponsibility: PG&EwithqualifiedbiologistforpreconstructionsurveyandwithCDFWforavianprotectionplan


Overall:WaterBoard

FrequencyofMonitoring: Dailyandperiodicdependingonactivity

FrequencyofReporting: Beforeconstruction:SurveyReports,AvianProtectionPlan

Duringconstruction:Dailymonitoringlogs


StandardforCompletionorCompliance: Beforeconstruction:SubmittalofSurveyReportswithburrowingowlfocusedsurveyresultsreport.Ifburrowingowlsarepresent,anAvianProtectionPlanwillbedevelopedinconsultationwithCDFWtoaddressburrowingowlavoidance,minimization,andrelocationmeasuresasneeded.

Duringconstruction:Dailybiologicalmonitoringlogswillbeusedtodocumenttheestablishmentofminimumconstructionbuffersaroundoccupiedburrows.


Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimize,reduceandmitigateimpactsonburrowingowl:10

Toconfirmthecurrentexistingconditionforburrowingowlsintheprojectstudyarea,afocusednestingseasonsurveyforburrowingowlwillbecompletedforallpotentialdisturbancelimitsandaminimum400feetbufferarea,whereaccessible,priortoconstruction.ThisfocusedsurveywillutilizethemostrecentCDFWprotocol(includinganyvariationsinthatprotocolthatmaybeapprovedbyCDFWforthesurvey).

Apreconstructionsurveyforburrowingowlswilloccurnogreaterthan14daysandasecondpreconstructionsurveywilloccur24hourspriortocommencinggrounddisturbingorconstructionactivities.Thelimitsofthispreconstructionsurveywillincludethedisturbanceareaanda400‐footbuffer.

Avoiddisturbingoccupiedburrowsduringthenestingperiod,fromFebruary1throughAugust31unlessitisverifiedthatthebirdshavenotbegunegg‐laying.Workmayonlycommencewhenitis




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determinedthatjuvenileowlsfromthoseburrowsareforagingindependentlyandcapableofindependentsurvival.

Avoidimpactingburrowsoccupiedduringthenon‐breedingseason(September1–January31)bymigratoryornon‐migratoryresidentburrowingowls.

AnavianprotectionplanwillbedevelopedinconsultationwithCDFWtoaddressburrowingowlsorsignsofburrowingowlsshouldtheybefoundonsiteduringthefocusednestingorpreconstructionsurveys.UnlessotherwiseapprovedbyCDFW,theminimumnoconstructionbufferswillbe160feetforoccupiedburrowsduringthenon‐breedingseasonofSeptember1throughJanuary31and250feetduringthebreedingseasonofFebruary1throughAugust31.

Ifburrowingowlsandtheirhabitatcanbeprotectedinplaceonoradjacenttoaprojectarea,theuseofbufferzones,visualscreens(suchashaybales)orotherfeasiblemeasureswhileprojectactivitiesareoccurringwillbeusedtominimizedisturbanceimpacts.Thesewillbeoutlinedintheavianprotectionplan.

On‐sitepassiverelocationwillbeavoidedtothegreatestextentpracticable,andonlyimplementedifavoidancecannotbemet.Passiverelocationisdefinedasencouragingowlstomovefromoccupiedburrowstoalternatenaturalorartificialburrows.Apassiverelocationplanwillbedetailedintheavianprotectionplan.

CompensationprovidedfordeserttortoiseandMohavegroundsquirrelwillalsoprovidehabitatforburrowingowlsshouldtherebeanunavoidableimpacttothisspecies.



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BIO-MM-1m: Minimize Impacts on American Badger and Desert Kit Fox Occupied Dens




Overall:WaterBoard

FrequencyofMonitoring: Dailybiologicalmonitoringlogs


StandardforCompletionorCompliance: Beforeandduringconstruction:Submittalofpreconstructionreportswilldocumentthepresenceofbadgerand/orkitfoxburrowsforavoidance.Avoidanceofburrowswouldbedocumentedinthedailybiologicalmonitoringlogs.Ifaburrowrequiresremoval,coordinationandagreementswithCDFWwillbedocumented.


AgencyVerificationofCompletionorCompliance: _____________________________________________________________

Mitigation Measure:

Ifthereisevidencethataburrowmaybeoccupiedbyabadgerorakitfoxduringpreconstructionsurveys(seeMitigationMeasureBIO‐MM‐1a),allconstructionactivitieswillceasewithina100‐footbufferoftheburrowduringthenatalseason(February–July)unlessotherwiseauthorizedbyCDFW.RemovalofanoccupiedAmericanbadgerordesertkitfoxburrowatanytimeoftheyearwillrequirecoordinationwithCDFW.



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BIO-MM-1n: Avoid Impacts on Nesting Loggerhead Shrike, Northern Harrier, and Other Migratory Birds (including Raptors and excluding Burrowing Owls)




Overall:WaterBoard

FrequencyofMonitoring: Asneededduringnestingseason(February1–August31),butasoftenasdaily

FrequencyofReporting: Beforeconstruction:SurveyReport

Duringconstruction:Dailybiologicalmonitoringlog


StandardforCompletionorCompliance: Beforeconstruction:Submittalsofnestingbirdpreconstructionsurveyresultsletterreporttodocumentnests.Monitoringwilloccurwhenconstructionoccursnearnests.Appropriateflaggingandavoidanceofnestswouldbedocumentedwithbiologicalconstructiondailymonitoringlogs.


AgencyVerificationofCompletionorCompliance: ____________________________________________________________________

Mitigation Measure:

PursuanttothefederalMigratoryBirdTreatyActandCDFWcode,impactstobirdnestswillbeavoided.Toavoidanyimpactsonmigratorybirds,resultingfromconstructionactivitiesthatmayoccurduringthenestingseason,February1throughAugust31,thefollowingmeasurewillbeimplemented:

Aqualifiedbiologistwillconductapreconstructionsurveyoftheproposedconstructionsiteand250footbufferareaaroundthesite.Thispreconstructionsurveywillcommencenomorethan7dayspriortotheonsetofconstruction,suchasclearingandgrubbingandinitialgrounddisturbance.

Ifanestisobserved,anappropriatebufferwillbeestablished.Fornestingpasserinebirdstheminimumbufferwillbe50‐feet.Fornestingraptors,theminimumbufferwillbe250feet.TheseminimumbufferscouldbereducedwithapprovalbyCDFWbasedonthefieldconditionsanddisturbancetoleranceofeachspecies.

Allno‐constructionactivitybufferareaswillbeclearlydemarcatedinthefieldwithstakesandflaggingthatarevisibilitytoconstructionpersonnel.



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BIO-MM-1o: Implement Measures Required to Minimize, Reduce, or Mitigate Impacts on Special-Status Plants

ImplementationTiming: Priortoandduringtoconstruction

ImplementationResponsibility: PG&Ewithqualifiedbiologist,USFWS,CDFW(iflistedplants)


Overall:WaterBoard

FrequencyofMonitoring: Asneededinbloomingseason(March‐July)inallscaleandcreosotescrubhabitats,desertdunehabitat,andtheMojaveRiverwashhabitat,butasfrequentlyasdaily.


Duringconstruction:Dailybiologicalmonitoringlogs,MitigationPlan(asneeded)


StandardforCompletionorCompliance: Beforeandduringconstruction:Submittalsofspecial‐statusplantsurveyresultsreporttodocumentanylocations.Monitoringwilloccurwhenconstructionoccursnearidentifiedplantlocations.Appropriateflaggingandavoidanceofspecial‐statusplantwouldbedocumentedwithbiologicalconstructiondailymonitoringlogs.Ifanylistedplantscannotbeavoided,consultationwiththeagencieswilloccur.Ifnon‐listedCRPRrank1A,1B,or2plantspeciescannotbeavoided,abriefanalysiswillbecompletedandsubmittedtodetermineifanyadditionalmitigationiswarrantedbasedontheoverallstatusoftheplantintheregion.



Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimize,reduceandmitigateimpactsonspecialstatusplants:11

Toconfirmthepresence/absenceandquantifyofspecial‐statusplantspeciespopulations(suchasLaneMountainmilk‐vetch,Mojavemonkeyflower,Clokey’scryptantha,desertcymopterus,Barstowwoollysunflower,Mojavemenodora,creamyblazingstar,beaverdambreadroot,andParish’sphacelia)inspecificareaswhereremedyfacilitiesmaybeconstructed,aspecial‐statusplantsurveywillbecompletedpriortoconstructioninthelimitsofdisturbanceanda100‐footbufferthatareproposedinallscaleandcreosotescrubhabitats,desertdunehabitat,andtheMojaveRiverwashhabitat.Thefocusedsurveyforthesespeciesshouldbeconductedbyaqualifiedbiologistduringthe



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appropriatebloomingperiod(approximatelyMarch–July),orwhentheplantisreadilyidentifiable,priortotheinitiationofconstruction.

Ifanylistedplantspeciesareobservedduringfocusedsurveysoftheworkareas,theextentofthepopulationwillbeclearlydemarcatedinthefieldbyprotectivefencing,lathstakes,and/orflagging,asappropriate,foravoidanceandtheregulatoryagencieswillbenotified.Ifprojectrelatedimpactstoalistedplantspecieswilloccur,initiationofconsultationwithCDFWandorUSFWSwillberequired.Avoidanceoflistedspeciesisthefirstpriority;disturbanceshallonlybeapprovediftheWaterBoard,CDFWand/orUSFWSalldeterminethatcompleteavoidanceisinfeasible.

IfanyplantspeciesthatarenotlistedunderCESAorESAbutareidentifiedasspecial‐statusspecies(“non‐listedplantspecies”)areobservedduringfocusedsurveysoftheworkareas,theextentofthepopulationwillbeclearlydemarcatedinthefieldbyprotectivefencing,lathstakes,and/orflagging,asappropriate,foravoidance.Avoidancewilloccurtothemaximumextentfeasible.Ifimpactsareproposedtonon‐listedCRPRrank1A,1B,or2plantspecies,abriefanalysiswillbecompletedtodeterminetheappropriatemitigation.Additionalmeasuresasaresultofthisanalysismayberequired,suchasseeding,transplanting,collectionofseedstobeusedforthefutureconservationofthespecies,and/orcompensatorymitigationhabitat.Avoidanceofnon‐listed,butrarespeciesisthefirstpriority;disturbanceshallonlybeapprovediftheWaterBoardandCDFWbothdeterminethatcompleteavoidanceisinfeasible.

Abiologicalmonitorwhohasobservedthelocationofthelistedandnon‐listedplantspeciestobeavoidedwillconductatailgatesession,informingtheworkcrewoftheappearanceandlocationoftheplantspeciespriortoinitiationofworkactivities.




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BIO-MM-1p: If Remedial Actions Affect Mojave Fringe-toed Lizard Habitat, than Compensate for Habitat Losses




Overall:WaterBoard

FrequencyofMonitoring: Asneededpriortoconstructionactivities

FrequencyofReporting: Beforeandduringconstruction:Habitat/ImpactAssessment,MitigationPlan(ifneeded)


StandardforCompletionorCompliance: Beforeandduringconstruction:AnanalysisofwhetherfinalworkareasoverlapMojavefringe‐toedlizardhabitat(wind‐blownsandareas)willbecompletedandsubmittedbyabiologist.Ifunavoidableimpactsaretooccur,quantificationofimpactswillberequiredandCDFWmustbeconsulted.DocumentationofthesatisfactionofthismeasurefromCDFWwillberequired.Compensation(MitigationPlan)mustbeprovidedwithinnomorethan3yearsofhabitatdisturbance.



Mitigation Measure:

PG&EwillensurethefollowingmeasuresareimplementedtomitigateimpactsonMojavefringe‐toedlizardhabitat:12

CompensatorymitigationforthelossofMojavefringe‐toedlizardhabitatwillbedeterminedthroughconsultationwithCDFW.TheminimumcompensationratioforMojavefringe‐toedlizardhabitatwillbe3:1.

12IntroductorytextinitalicsaddedafterFinalEIR



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BIO-MM-2: Habitat Compensation for Loss of Sensitive Natural Communities


ImplementationResponsibility: PG&Ewithqualifiedbiologist,CDFW,USFWS(iflistedspeciesissues)


Overall:WaterBoard

FrequencyofMonitoring: Asneededpriortoconstructionactivities

FrequencyofReporting: Beforeconstruction:Habitat/ImpactAssessment,MitigationPlan(ifneeded)


StandardforCompletionorCompliance: Beforeandduringconstruction:PG&E’sbiologistshallcompleteananalysisofwhetherfinalworkareasoverlapCaliforniajointfirscrub,desertdunehabitatanddunelandsoilsthatwillbesubmittedtoCDFWandtheWaterBoard.Ifunavoidableimpactsaretooccur,PG&E’sbiologistshallprovideaquantificationofimpactsandaproposalforcompensatorymitigation(MitigationPlan)toCDFWandtheWaterBoard.DocumentationofthesatisfactionofthismeasurefromCDFWwillberequired.

Annually:AnnualReport,withannualsummaryofmonitoringandreportingactivities.


Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtomitigateimpactsonsensitivenaturalcommunities:13

AvoidanceofCaliforniajointfirscrub,desertdunehabitatanddunelandsoilsisthefirstpriority;encroachmentshallonlyoccuriftheLahontanWaterBoard,USFWS,andCDFWallconcurthatcompleteavoidanceisinfeasible.IfnewremediationactivitiesresultinthepermanentremovalandlossofsensitivenaturalcommunitiessuchastheCaliforniajointfirscrubanddesertduneshabitatanddunelandsoils,acompensatorymitigationprogramorplanwillbedevelopedandimplementedthroughconsultationwiththeUSFWS,CDFW,andtheLahontanWaterBoard.Compensatorymitigationmayincludeafee‐basedprogramand/ordirecthabitatreplacementonaminimum1:1basisandinaccordancewiththoseagencies’recommendations.

Landsprovidedasmitigationfordeserttortoise,Mohavegroundsquirrel,Mojavefringe‐toedlizard,andburrowingowlsmayalsobeusedtoprovidemitigationforanylossofsensitivenaturecommunityhabitat,ifthelandinquestionincludessensitivenaturalcommunities.




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BIO-MM-3: Measures Required to Minimize, Reduce, or Mitigate Impacts on Waters and/or Wetlands under the Jurisdiction of the State


ImplementationResponsibility: PG&Ewithqualifiedbiologist,USACE,CDFW,WaterBoard


Overall:WaterBoard

FrequencyofMonitoring: Asneededpriortoconstructionactivities.

FrequencyofReporting: Beforeconstruction:Wetland/WaterImpactIdentification,Relevantpermits(asneeded),HarperLakeplayamitigationplan(asneeded)


StandardforCompletionorCompliance: Beforeconstruction:AnanalysisofwhetherfinalworkareasoverlapjurisdictionoftheU.S.ArmyCorpsofEngineers(USACE),LahontanWaterBoard,and/orCDFW(includingtheHarperLakeplaya)mustbecompletedandsubmittedbyabiologist/regulatoryspecialist.Ifunavoidableimpactsaretooccur,appropriatepermitsfromUSACE,LahontanWaterBoard,and/orCDFWmustbereceivedpriortoconstructionintheseareas.



Mitigation Measure:

PG&Ewillensurethefollowingmeasuresareimplementedtominimize,reduceandmitigateimpactsonwatersorwetlandsunderthejurisdictionofthestate:14

Constructionactivityandaccessroadswillbeavoidedinalldrainages,streams,drylakebeds,pools,orotherfeaturesthatcouldbeunderthejurisdictionoftheU.S.ArmyCorpsofEngineers(USACE),LahontanWaterBoard,and/orCDFW,iffeasible.Ifimpactstothesefeaturesareidentified,aformaljurisdictionaldelineationforsubmittaltotheagenciesmayberequired.

IfimpactstoUSACE,RWQCB,and/orCDFWjurisdictionwatersorwetlandsareidentified,theprojectapplicantwillcomplywiththepermittingrequirementsimposedbyUSACE,LahontanWaterBoard,and/orCDFW,asappropriate.

RemedialactionsshallavoidencroachmentontheHarperLakeplayaitselftothemaximumextentfeasible.Ifencroachmentisnecessaryontheplaya,PG&EshalldemonstratetherationalewhyencroachmentisunavoidabletotheWaterBoardandCDFW.IftheWaterBoardandCDFWdeterminethattheencroachmentisnecessary,PG&Eshallmitigateforalltemporaryorpermanent




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disturbanceonaminimum3:1ratio(3acresmitigationto1acreimpact).PlansformitigationmustbeapprovedbyRWQCBandCDFW.



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BIO-MM-4: Implement West Mojave Plan Measures to Impacts on DWMAs on BLM Land


ImplementationResponsibility: PG&Ewithauthorizedbiologist,BLM

MonitoringResponsibility: Field:BLM

Overall:WaterBoard

FrequencyofMonitoring: AsneededpriortoconstructionactivitiesinDWMAsonBLMLand

FrequencyofReporting: BeforeconstructioninBLMareas:BLMconcurrencewithDWMAmeasures

Within3yearsofinitialdisturbanceinBLMareas:Compensatorymitigation


StandardforCompletionorCompliance: BeforeconstructioninBLMareas:RecordofcoordinationandagreementwithBLMforworkinDWMAstosatisfythemeasuresbelowtoWaterBoardincludingsubmittalsofdeserttortoise,burrowingowl,andplantfocusedandpreconstructionsurveyresultsreportstoBLM.

Within3yearsofinitialdisturbance:DocumentationofsatisfactionofthecompensatoryrequirementsforDWMAsonBLMLand.

Anytime:Mapandimmediatereporting(within24hours)ofdeserttortoisesightingsandanyinjuries/fatalitiesplusanynon‐complianceissuestoBLM.

Annually:AnnualReport,withdailymonitoringlogsandanyrecordsofcoordination/agreementwithBLMandwithanymappedsightings


Mitigation Measure:

PertinentmeasurescontainedwithintheFinalEnvironmentalImpactReportandStatementfortheWestMojavePlan(BLM2005)willbeimplementedtominimizepotentialimpactstospecial‐statusspecieswithinconservationareaslocatedonfederalland,ifandwhereprojectactivitieswouldinfringeontheirsuitablehabitat.ConsultationwithBLMwillberequiredpriortoimplementationofanyactivities.AccordingtotheFEIRfortheWestMojavePlan,theseactivitieswillgenerallyincludethefollowing(thedetailedlistofmitigationmeasurescanbefoundintheFEIRfortheWestMojavePlan):

Avoidconstructionactivities(particularlylinearprojectsthroughTortoiseSurveyAreas)whentortoisesaremostlikelytobeactive,whichgenerallyoccursbetweenFebruary15andNovember15.

Conductpre‐constructionsurveys(accordingtoapprovedBLMguidelines[2005]andUSFWS’GuidelinesforHandlingDesertTortoises[USFWS2009])forpresenceorabsenceofspeciesand



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monitorandreportanyviolationsofprotectivestipulations.Onlyauthorizedbiologistsmayconductsurveysandhandlingofanyliveindividuals.

Authorizebiologistsandenvironmentalmonitorswillmonitorandreportanyviolationsofprotectivestipulations,recordandreportanyinstanceswheretortoisesorothercoveredspecieswereencountered,uponcompletionofconstructionactivitiesreportontheeffectivenessandpracticalityofmitigationmeasures(includinginformationoncollected,killedorinjuredindividuals)andtheacresofhabitatthatwereremovedordisturbed.

Paycompensatoryfee.WithintheHabitatConservationAreasonBLMland,thecompensatoryfeewillbebasedonaratioof5:1(fivetimestheaveragevalueofanacreoflandwithinthehabitatconservationarea).

Conductburrowingowlsurvey.ForburrowingowlhabitatwithintheDWMAs,aburrowingowlsurveyutilizingthefour‐visitCDFWprotocolwillbeconducted.Theapplicantwillprovidetoallconstructionpersonnelaninformationalbrochurewithanillustrationofaburrowingowl,adescriptionofitsburrowsandhowtheycanberecognized,andasummaryofthebird’slifehistory.Ifatanytimepriortogradingtheapplicantbecomesawareofburrowingowlsonthesite,hewillbeinstructedtocallanumberwhereabiologistcanrespondquicklybyinstitutingtheminimizationmeasures.

Conductbotanicalsurveys.ForDesertcymopterus,ifdisturbancewithinsuitablehabitatlocatedwithintheSuperiorCroneseDWMAisproposed,theApplicantwillberequiredtoperformbotanicalsurveysforthisspecies,andiftheplantislocated,toavoidalloccurrencestothemaximumextentpracticable.Incidentaltakewillbelimitedto50acres.



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CUL-MM-1: Determine Presence of Historic Resources as Defined by CEQA

ImplementationTiming: Priortoconstruction

ImplementationResponsibility: PG&Ewithqualifiedarchitecturalhistorian

MonitoringResponsibility: Field:QualifiedArchitecturalHistorian

Overall:WaterBoard

FrequencyofMonitoring: Afterconstructionactivitiesaredesigned:HistoricalResourceSurvey

FrequencyofReporting: Afterconstructionactivitiesaredesigned:HistoricalResourceSurvey


StandardforCompletionorCompliance: Beforeconstruction:HistoricResourcesSurveyreport(s)andmemorandumofevidencethattheWaterBoard(andBLMforfederallands)acceptsthefindingsofthereport.HistoricresourcessurveysshouldbepreparedaccordingtoNationalRegisterBulletin24,GuidelinesforLocalSurveys:ABasisforPreservationPlanningandtheSecretaryoftheInterior’sStandardsandGuidelinesforArchaeologyandHistoricPreservation.DirectionsforcompletingDPR523formsarefoundinInstructionsforRecordingHistoricalResources.



Mitigation Measure:

Priortoconstructionandpotentialfutureconstructionactivities,PG&Ewillretainaqualifiedarchitecturalhistoriantoconductsurveysinareaswhereconstructionwilloccurtodetermineifhistoricalresources,asdefiniteinStateCEQAGuidelinesSection15064.5,existwithintheprojectarea.ThesurveywillbeconductedandwrittenaccordingtostandardssetforthintheHistoricStructuresReportFormatfromtheOfficeofHistoricPreservation(OfficeofHistoricPreservation2003).ThesurveywillbeprovidedtotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)forreviewpriortoconstruction.

ThequalifiedarchitecturalhistorianalsowillevaluatetheresourcesidentifiedduringtheArchitecturalResourcesSurveyandwillconsultwiththeWaterBoardtodetermineiftheyareeligiblefortheCRHRorotherwisemeetthedefinitionofahistoricalresourceunderCEQA.Ifitmeetsthedefinition,thearchitecturalhistorianwilldetermineiftheconstructionoroperationoftheproposedremediationactivitieswouldaffectthequalitiesoftheresourcethatcontributetotheeligibilityforlistingontheCRHR,andwillevaluateifthepotentialchange(s)totheresourceisconsideredsignificant.TheevaluationwillbedocumentedinareportwillbewrittenaccordingtostandardssetforthintheHistoricStructuresReportFormatfromtheOfficeofHistoricPreservation(OfficeofHistoricPreservation2003).ThereportwillbeprovidedtotheWaterBoardforreviewpriortoconstruction.



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CUL-MM-2: Avoid Damage to Historic Resources Located in Project Areas through Project Modification



MonitoringResponsibility: WaterBoard,BLM(iffederallands)

FrequencyofMonitoring: Priortoconstruction

FrequencyofReporting: Priortoconstruction


StandardforCompletionorCompliance: Afterremediationactivitiesaredesigned,reviewed,and/ormodified:LetterReport(s)byqualifiedarchitecturalhistorianwillsummarizepotentialdamageproposedbythePG&E‐designedremediationelements(includingconstructionandstaging)andincludeanysuggestionsforprojectmodifications.Ifthereareprojectmodifications,afollow‐upLetterReportwillbepreparedtosummarizetheeffectivenessofthedesignchanges.AllLetterReportswillbesubmittedtotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)forreviewandconcurrence.

Annually:AnnualReport,withLetterReports


Mitigation Measure:

IfthePG&E‐designedremediationelements(includingconstructionandstaging)arelikelytosignificantlyimpactqualitiesofahistoricalresourceasidentifiedbyaprofessionallyqualifiedarchitecturalhistorian(perMitigationMeasureCUL‐MM‐1),PG&Ewillconsultwithaqualifiedarchitecturalhistoriantoredesign,reroute,orrelocatetheproposedelementsinsuchawaythatwillnotresultinsignificantimpactstotheresource.Barrierfencingoranothervisualcuemaybeinstalledaroundidentifiedresourcesasrequiredtoprotectagainstinadvertentdamageduringconstruction.PG&EwilldocumenttheavoidancemeasurespriortoconstructionandsubmitthereporttotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)todemonstratecompliance.



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CUL-MM-3: Record Historic Resources




FrequencyofMonitoring: Ifhistoricresourcesareidentified,priortoconstruction


StandardforCompletionorCompliance: Ifhistoricresourcesareidentified,preparationofdocumentationtotheHistoricAmericanBuildingSurvey(HABS)/HistoricAmericanEngineeringRecord(HAER)standards.DocumentationwillbesubmittedtotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)forreviewandthentotheNationalParkServiceHABS/HAERhistorianforreviewandacceptanceintothenationwiderecordationprogram.InaccordancewithNationalParkServicestandards,archivalfinalsubmissionswillbesenttotheNationalParkServiceHABS/HAERhistorianforfinalacceptanceandsenttotheLibraryofCongressHABSCollectionforinclusion.Twocopiesofthedocument,includingarchivalprints,willbesubmittedtoregionalhistoricalrepositoriesforinclusionintheirresearchcollection.

IfpreservationorreusemeasuresareidentifiedinDocumentationaPreservationPlanshallbeprepared.Ifpreservationorreusearepursued,PG&EwillconsultwithaqualifiedarchitecturalhistoriantowriteaPreservationPlanforsubmittaltotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)forreviewandacceptance.

IfinterpretiveoreducationalmeasuresareidentifiedinDocumentation:MitigationReport.Ifinterpretiveandeducationalmitigationmeasuresarepursued,thenaMitigationReportwillbewrittenandsubmittedtotheWaterBoard(andtotheBLMforfederallandsifrequiredbyBLM)forreviewandacceptance.

Annually:AnnualReport,withallrelevantdocumentation


Mitigation Measure:

IfhistoricalresourcesareidentifiedandcannotbeavoidedthroughMitigationMeasureCUL‐MM‐2,PG&EwillretainaprofessionallyqualifiedarchitecturalhistoriantoconductresearchandtoadequatelyrecordtheresourcestoHistoricAmericanBuildingSurvey(HABS)/HistoricAmericanEngineeringRecord(HAER)standards.Adequaterecordationofabuiltenvironmentresourcewillinclude:

Developmentofsite‐specifichistoryandappropriatecontextualinformationregardingtheparticularresource,inadditiontoarchivalresearchandcomparativestudies;



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Accuratemappingofthenotedresources,scaledtoindicatedsizeandproportionofthestructures;

Architecturaldescriptionsofthestructures;

Photodocumentationofdesignatedresources;and

Recordationutilizingmeasuredarchitecturaldrawings.

Mitigationofabuiltenvironmentresourcemayalsotakeplaceintheformofpreservationorreuseofabuildingorstructure.Thepreservationand/orreuseofaneligiblestructurewillincludeabidingbytheSecretaryoftheInterior’sStandardsandGuidelinesforArcheologyandHistoricPreservation.

IfthearchitecturalhistoricresourceiseligiblefortheCRHRunderCriteria1(associationwithimportanteventsinhistory),2(associationwithimportantpeopleinhistory),3(animportantexampleofhistoricarchitecture),or4(hasyieldedormaybelikelytoyieldinformationimportantinprehistoryorhistory),PG&Ewillattempttophysicallyretainthebuildingorstructure.Ifthebuildingorstructurecannotphysicallyberetained,thenPG&E,incoordinationwithaqualifiedarchitecturalhistorian,willpursuemeasurestoretainandmakeeasilyavailablethehistoricmemoryoftheresource.Tothisend,educationalresourcessuchaswebmedia,staticdisplays,interpretivesigns,useofon‐sitevolunteerdocents,orinformationalbrochurescansupplementHABS/HAER.PG&EwillsubmitamitigationreporttotheWaterBoarduponcompleteimplementationoftheapprovedmitigationmeasurestodocumentcompliance.



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CUL-MM-4: Conduct an Archaeological Resource Survey to Determine if Historical Resources under CEQA or Unique Archaeological Resources under PRC 21083.2 are Present in Proposed Areas of Disturbance


ImplementationResponsibility: PG&Ewithqualifiedarchaeologist


FrequencyofMonitoring: Priortoconstruction:Onceineachareatobedisturbed


StandardforCompletionorCompliance: Priortoconstruction:ArchaeologicalSurveyReport(ASR)andrecordofWaterBoard’sacceptanceoftheASRfindings

Annually:AnnualReport,withASRandrecordofacceptance

AgencyVerificationofCompletionorCompliance: ______________________________________________________________

Mitigation Measure:

Priortothestartofconstructionorfutureconstructionactivities,PG&Ewillretainqualifiedarchaeologiststoconductapedestrianarchaeologicalsurveytodeterminetheprehistoric,ethnographic,andhistoricarchaeologicalresourceswithinareasproposedfordisturbancewithintheprojectarea.ThesurveyandreportwillbeconductedandwrittenaccordingtostandardssetforthbytheOfficeofHistoricPreservation(OfficeofHistoricPreservation2003).ThereportwillbeprovidedtotheWaterBoardforreviewpriortoconstruction.

Ifprehistoric,ethnographic,and/orhistoricarchaeologicalresourcesareidentifiedwithintheproposeddisturbanceareaswithintheprojectarea,thentheevaluationandtreatmentofsuchresourceswillbeconductedaccordingtothemeasuressetforthinMitigationMeasuresCUL‐MM‐5,CUL‐MM‐6,andCUL‐MM‐7.



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CUL-MM-5: Avoid Damaging Archaeological Resources through Redesign of Specific Project Elements or Project Modification




FrequencyofMonitoring: Onceforeachremedialactivity


StandardforCompletionorCompliance: Onceforeachremedialactivity:Documentationbyqualifiedarchaeologistidentifyingtheresourceanticipatedtobedisturbedandanyavoidanceand/orprotectionmeasures

Annually:AnnualReport,withanydocumentation


Mitigation Measure:

IfthePG&E‐designedremediationelements(includingconstructionandstaging)disturbprehistoric,ethnographic,orhistoric‐eraarchaeologicalresourcesasidentifiedbythequalifiedarchaeologist(perMitigationMeasureCUL‐MM‐4),PG&EwillconsultwithaprofessionallyqualifiedarchaeologisttodetermineiftheproposedremediationactivitieswouldaffectthequalitiesofthearchaeologicalhistoricalresourcethatcontributetotheeligibilityforlistingintheCRHR.Iftheproposedactivitiesarelikelytosignificantlyimpactthosequalities,PG&Ewillconsultwithaprofessionallyqualifiedarchaeologisttoredesign,rerouteorrelocatetheproposedelementinsuchawaythatwillnotresultinsignificantimpactstotheresource,becausepreservationinplaceisthepreferredmannerofmitigatingimpactstoarchaeologicalsitesunderCEQA.Barrierfencingoranothervisualcuewillbeinstalledaroundidentifiedresourcestoprotectagainstinadvertentdamageduringconstructioniftheresourcescannotbeseenfromatleast5feetawayorheavymachinerywillbeusedwithin15feetoftheresources.PG&EwilldocumenttheavoidancemeasurespriortoconstructionandsubmitthereporttotheWaterBoard(andtotheBLMforfederalland)todemonstratecompliance.



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CUL-MM-6: Evaluate Archaeological Resources and, if Necessary, Develop and Implement a Recovery Plan






StandardforCompletionorCompliance: Onceforeachremedialactivity:ArchaeologicalEvaluationandDataRecoveryReport



Mitigation Measure:

Ifarchaeologicalresourcescannotbeavoided(perMitigationMeasureCUL‐MM‐5),PG&EwillretainaprofessionallyqualifiedarchaeologisttoevaluatetheresourceforitseligibilityontheNRHPandCRHR.Evaluationofanarchaeologicalresourcewilllikelyconsistofhistoricalresearchand/orphysicalexcavationsofthesitetodeterminesitecontentandintegrity.EvaluationswillbedocumentedinareportwrittenaccordingtostandardssetforthbytheOfficeofHistoricPreservation(OfficeofHistoricPreservation2003).PG&EwillsubmitthisdocumenttotheWaterBoardforconcurrenceoneligibilitydeterminations.

Iftheresourceisdeterminedtobeahistoricalresource,adatarecoveryplan(CaliforniaCodeofRegulations,Title14,Section15126.4(b)(3)(C)),willbedevelopedandimplemented.Thedatarecoveryplanwillincludebackgroundresearch,physicalexcavation,labanalysis,andareportsummarizingresults.Thismitigationmeasurewillminimizelossofinformationbyprocuring,processing,andanalyzingasuitablesampleofmaterialsfromtheaffectedportionsofthesites.Itwillalsoaddresstheimpactsofdamagetothesiteshinderingoreliminatingtheresources’potentialtoyieldinformationabouttheprehistoryandhistoryoftheHinkleyarea.PG&Eisresponsibleforimplementingthephysicalexcavationportionofthedatarecoveryprogrampriortoconstruction.

Insomecases,datarecoveryexcavationmightnotprovideanadequatemitigationmeasuretoreduceimpactstoalessthansignificantlevelandmightnotbeanappropriatemitigationmeasureforsomeresources,particularlywhenthearchaeologicalhistoricresourceiseligiblefortheCRHRunderCriteria1(associationwithimportanteventsinhistory),2(associationwithimportantpeopleinhistory),or3(embodiesthedistinctivecharacteristicsofatype,period,region,ormethodofconstruction;representstheworkofanimportantcreativeindividual;orpossesseshighartisticvalues).Mitigationwillcapturethehistoryofaresourceandshareitwiththepublicsothatthepubliccancontinuetofeelaconnectionwithcommonheritage.Ifthearchaeologicalsitecannotphysicallyberetained,thenPG&E,incoordinationwithaqualifiedarchaeologist,willpursuewaysthatthememoryoftheresourceisretainedandmadeeasilyavailable.Tothisend,educationalresourcessuchaswebmedia,static



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displays,interpretivesigns,useofon‐sitevolunteerdocents,orinformationalbrochurescansupplementdatarecoveryexcavations.

IfthearchaeologicalresourcequalifiesasauniquearchaeologicalsitebutdoesnotqualifyasahistoricalresourceunderCEQA,thesitewillbetreatedinaccordancewiththeprovisionsofSection21083.2.Otherthanavoidance,mitigationmeasureswillincludedeedingarchaeologicalsitesintopermanentconservationeasements,cappingorcoveringarchaeologicalsiteswithalayerofsoilbeforebuildingonthesites,orplanningparks,greenspace,orotheropenspacetoincorporatearchaeologicalsites.

PG&EwillsubmitallmitigationplanstotheWaterBoardforconcurrencepriortomitigationimplementation.PG&EwillsubmitaMitigationReporttotheWaterBoarduponcompleteimplementationoftheapprovedmitigationmeasurestodocumentcompliance.



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CUL-MM-7: Comply with State and County Procedures for the Treatment of Human Remains Discoveries



MonitoringResponsibility: Field:CountyCoronerandqualifiedarchaeologist(ifhumanremainsarefound)

Overall:WaterBoard(andBLMifonBLMland)

FrequencyofMonitoring: Daily(ifhumanremainsarefound)


StandardforCompletionorCompliance: Daily(ifhumanresourcesarefound):Memorandumofevidencethatrequiredprocedureshavebeenfollowed



Mitigation Measure:

Ifhumanremainsarefoundasaresultofgrounddisturbance,inaprojectlocationotherthanadedicatedcemetery,PG&EwillnotifytheWaterBoardandtheSanBernardinoCountyCoroner(andBLMifonfederalland).Ifhumanremainsarediscovered,StateHealthandSafetyCode7050.5statesthatfurtherdisturbancesandactivitieswillceaseintheareaandnearbyareas,andtheCountyCoronerwillbecontactedimmediately.PursuanttoPRC5097.98,ifthecoronerdeterminesthattheremainsareofNativeAmericanorigin,thecoronermustcontacttheNAHCwithin24hours(CaliforniaHealthandSafetyCode7050(c)).

TheNAHCwillidentifyandnotifythemostlikelydescendants(MLDs)oftheinterredindividuals,whothenwillmakearecommendationformeansoftreatingorremoving,withappropriatedignity,thehumanremainsandanyassociatedgravegoodsasprovidedinPublicResourcesCode5097.98.FurtherprovisionsofPublicResourcesCode5097.98willbeimplementedasapplicable.Undertheseprovisions,MLDswillhaveatleast48hoursfromcompletingtheirexaminationoftheremainsinwhichtomakerecommendationsforthedispositionoftheremains.IftheNAHCisunabletoidentifyanMLD,iftheidentifiedMLDfailstomakearecommendation,orifthelandownerrejectstheMLD’srecommendation,thelandownerwillinterthehumanremainsandassociatedgravegoodswithappropriatedignityonthepropertyinalocationnotsubjecttofurtherandfuturesubsurfacedisturbance.

Intheeventthathumanremainsarediscovered,aPG&EqualifiedarchaeologistandtheWaterBoardwillbecontactedimmediately.Ifthediscoveryisonfederalland,BLMwillalsobenotifiedupondiscoveryandincludedinanydeterminationsforthedispositionofremains.



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CUL-MM-8: Conduct Preconstruction Paleontological Resource Evaluation, Monitoring, Resource Recovery, and Curation

ImplementationTiming: Priorto,duringandpotentiallyafterconstruction

ImplementationResponsibility: PG&Ewithqualifiedpaleontologistand/orgeologist

MonitoringResponsibility: Field:Qualifiedpaleontologist

Overall:WaterBoar


FrequencyofReporting: Beforeconstruction:Onceforeachground‐disturbingremedialactivity


StandardforCompletionorCompliance: Beforeconstruction:PaleontologicalResourceEvaluationreport,preparedbyqualifiedpaleontologistand/orgeologist,thatidentifiessite‐specificmeasuresformonitoring,avoiding,protecting,recovering,and/orcuratingresources.


AgencyVerificationofCompletionorCompliance: ______________________________________________________________

Mitigation Measure:

Priortoconstructionandfutureconstructionactivities,PG&Ewillconfirmallgeologicunitspotentiallyaffectedbyeachsegmentoftheproject,includingQuaternaryandbedrockunits.Thisinformationwillbeusedtoguidemitigationrequirementsonasite‐specificbasisduringconstructionandduringmaintenanceactivitiesthatrequiregrounddisturbance.

Allground‐disturbingconstructionandmaintenanceactivitieswillrequireMeasure8a(althoughthismeasurewilllikelyonlyneedtobeimplementedonceduringprojectdesign),andMeasures8b,8c,8d,and8e.

Allground‐disturbingconstructionactivitiesthataffectgeologicunitsidentifiedashighlysensitiveforpaleontologicalresourcesandallmaintenanceactivitiesthatinvolveneworextendedgrounddisturbanceinhighlysensitiveunitswillrequireMitigationMeasureCUL‐MM‐8f.

Measure8a:FurtherEvaluationofGeologicUnitswith“Undetermined”Sensitivity.Beforeground‐disturbingactivitiesbegin,PG&EwillretainaqualifiedpaleontologistasdefinedbytheSVP(SocietyofVertebratePaleontologyConformableImpactMitigationGuidelinesCommittee1995)orotherappropriatepersonnel(e.g.,Californialicensedprofessionalgeologistwithappropriateexperienceandexpertise)toconductfurtherliteraturereviewanddiscussionwithsubjectareaexpertstoresolvethepaleontologicalsensitivityofthegeologicunitsidentifiedinTable3.8‐5as“undetermined.”Ifsite‐specificgeologicorgeotechnicalstudiesfortheprojectidentifyadditionalunitslikelytobeaffectedbyprojectconstructionandnotincludedinTable3.8‐5,theywillalsobeevaluatedforpaleontologicalsensitivityunderthismeasure.Theresultsoftheevaluationconductedforthismitigationmeasurewill



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beusedtoguidetheapplicationofmitigationduringprojectconstructionandmaintenanceactivities.TheevaluationwillbeprovidedtotheWaterBoard(andtoBLMforfederallands)priortoconstruction.

Measure8b:EvaluationofSite‐SpecificImpactPotentialinAreasofHoloceneSubstrate.PG&Ewillretainappropriatelyqualifiedandlicensedpersonnel(e.g.,Californialicensedprofessionalgeologistwithappropriateexperienceandexpertise)toevaluatethepotentialforimpactsonpaleontologicallysensitivestrataacrosstheprojectarea.Theevaluationwillbebasedonavailablegeologicandgeotechnicalinformation;projectdesign;proposedconstructionand/ormaintenancemethods,includinganticipateddepthofdisturbance;andexistingsiteconditions,includingpre‐existingdisturbance,ifany.Inareaswherehighlysensitivestratawillbeinvolvedinproject‐relatedgrounddisturbance,Measures8c,8d,8e,and8fwillapplyandwillbeimplemented.TheevaluationwillbeprovidedtotheWaterBoard(andtoBLMforfederallands)priortoconstruction.

Measure8c:PreconstructionMeetingandWorkerAwarenessTraining.PG&Ewillensurethatallconstructionandmaintenancepersonnelreceivepaleontologicalresourcesawarenesstrainingthatincludesinformationonthepossibilityofencounteringfossilsduringconstruction;thetypesoffossilslikelytobeseen,basedonfindsinthesitevicinity;andproperproceduresintheeventfossilsareencountered.WorkertrainingwillbepreparedandpresentedbyaqualifiedpaleontologistasdefinedbytheSVP(SocietyofVertebratePaleontologyConformableImpactMitigationGuidelinesCommittee1995)orotherappropriatepersonnel(e.g.,Californialicensedprofessionalgeologistwithappropriateexperienceandexpertise)experiencedinteachingnon‐specialists.Itmaybedeliveredatthesametimeasotherpre‐plannedconstructionworkereducation,oritmaybepresentedseparately.

Measure8d:PaleontologicalMonitoring.Paleontologicalmonitoringwillbeconductedforallground‐disturbingactivitiesinportionsoftheproposeddisturbancewithsubstratematerialsidentifiedashighlysensitiveforpaleontologicalresources(seeTable3.8‐5).MonitoringmayalsoberequiredwhereHolocenematerialsoverliehighlysensitivestrataandsite‐specificinvestigationshaveidentifiedthepotentialforprojectactivitiestoinvolvetheunderlyingsensitivestrata.Atrainedpaleontologicalmonitorwilloverseeallground‐disturbingactivitiesthataffecthighlysensitivesubstratematerials,includingvegetationremoval,sitepreparation,constructiongradingandexcavation.Monitoringmayberequiredforanyinitiallandclearingorgradingforwellinstallationinsensitiveareasbutisnotrequiredforwelldrillingitself.Paleontologicalmonitoringwillconsistofobservingoperationsandperiodicallyinspectingdisturbed,graded,andexcavatedsurfaces.Themonitorwillhaveauthoritytodivertgradingorexcavationawayfromexposedsurfacestemporarilyinordertoexaminedisturbedareasmoreclosely,and/orrecoverfossils.Theresponsiblepaleontologistwillcoordinatewiththeconstructionmanagertoensurethatmonitoringisthoroughbutdoesnotresultinunnecessarydelays.Ifadditionalpersonnelareneededforeffectivemonitoring,theresponsiblepaleontologistmaytrainotherconsultantorin‐housestaffinpaleontologicalmonitoring.Oncetrainingiscomplete,individualstrainedbythequalifiedpaleontologistmaythenmonitortheproposedprojectconstructionindependently,andwillhavethesameresponsibilitiesasdescribedabove.AnnualreportingwillbeprovidedtoWaterBoard(andtoBLMforfederallands,ifrequiredbyBLM)documentingcompliancewiththismeasure.

Measure8e:StopWorkRequirement.Iffossilmaterialsarediscoveredduringanyproject‐relatedactivity,includingbutnotlimitedtoprojectgradingandexcavation,allground‐disturbingworkinthevicinityofthefindwillstopimmediatelyuntiltheresponsiblepaleontologistcanassessthenatureandimportanceofthefindandrecommendappropriatetreatment.Assessmentwilloccurinatimelymanner,andrecommendationsfortreatmentwillbeconsistentwithSVPguidelines(Societyof



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VertebratePaleontologyConformableImpactMitigationGuidelinesCommittee1995).Treatmentmayincludepreparationandrecoveryoffossilmaterialssothattheycanbehousedinanappropriatemuseumoruniversitycollection,andmayalsoincludepreparationofareportforpublicationdescribingthefinds.Ifnoreportisrequired,PG&Ewillnonethelessensurethatinformationonthenature,location,anddepthofallfindsisreadilyavailabletothescientificcommunity.Theresponsiblepaleontologistandallpaleontologicalmonitorswillbeempoweredtotemporarilyhaltorredirecttheexcavationequipmentawayfromfossilstobesalvaged.

Measure8f:FossilRecoveryandCuration.Iffossilmaterialsarediscoveredduringproject‐relatedactivities,theresponsiblepaleontologistwilldeterminewhetherrecoveryandcurationiswarranted,andwillbeempoweredtoconferwithlocalareaexpertsasneededtoarriveatadetermination.Allmaterialswarrantingrecoverywillbestabilizedonthesiteandthensalvagedconsistentwithcurrentlyacceptedproceduresandtheprevailingstandardofcareforpaleontologicalexcavations.Theresponsiblepaleontologistwillcoordinatewiththeconstructionmanagertoensurethatspecimenrecoveryproceedsinatimelymanner.Recoveredfossilswillbepreparedforidentificationconsistentwithcurrentlyacceptedproceduresandtheprevailingstandardofcare.Theywillthenbeidentifiedbycompetentspecialists,potentiallyincluding,butnotnecessarilylimitedto,theresponsiblepaleontologist.Ifpossible,identificationwillincludegenus,species,and,ifapplicable,subspecies.Ifspecies‐levelidentificationisnotfeasible,themaximumfeasiblelevelofspecificitywillbeprovided.Thefossilassemblagewillthenbeanalyzedbystratigraphicoccurrenceandanyotherapplicableparameters(size,taxapresent,and/ortaphonomicconditions).Afaunallistwillbedeveloped.

Anyspecimens(fossils)ofpaleontologicalsignificancefoundduringconstructionwillbetemporarilyhousedinanappropriatemuseumoruniversitycollection.Ifcurationisrequired,theresponsiblepaleontologistwilldevelopappropriatecurationagreements,consistentwithapplicableprotocolsandtheprevailingstandardofcare.

Theresponsiblepaleontologistwillprepareafinalreportthatincludesatleastthefollowingcomponents:

informationonsitegeologyandstratigraphy,includingastratigraphiccolumn;

adescriptionoffieldandlaboratorymethods;

afaunallist,withstratigraphyranges/occurrencesforeachtaxon;

aconcisediscussionofthesignificanceofthesiteanditsandrelationshiptoothernearbyand/orsimilarfossillocalities;

alistofreferencesconsultedduringtheproject,includingpublishedgeologicmapsforthesiteandvicinity;and

acompletesetoffieldnotes,fieldphotographs,andanynewgeologicmapsdevelopedfororduringtheproject.

Fullcopiesofthefinalreport,includinganyappendedmaterials,willbeputonfilewithanyrepositoryinstitution(s).Dependingonthenatureofthematerialsrecovered,itmayalsobeappropriatetoprepareareportforpublicationinanappropriatepeer‐reviewedprofessionaljournal.Suchpublicationwillbeatthediscretionoftheresponsiblepaleontologist.



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TRA-MM-1: Implement Traffic Control Measures during Construction


ImplementationResponsibility: PG&Ewithcontractor,SanBernardinoCounty,Caltrans


FrequencyofMonitoring: Priortoconstruction

Duringconstruction:Periodic

FrequencyofReporting: Priortoconstruction

Duringconstruction:Periodic


StandardforCompletionorCompliance: Priortoconstruction:Documentationofproposedaccessroutesinconstructionspecificationsorrequirements.

Duringconstruction:Constructionmonitoringlogs



Mitigation Measure:

TominimizeimpactsontrafficalongSR58andsurfacestreetsintheprojectarea,PG&Ewillensurethatconstructioncontractorsimplementthefollowingtrafficcontrolmeasuresduringconstructionoftheremediationfacilitiesandassociatedinfrastructure.Thesemeasuresinclude:

Re‐routedeliverytruckswithmaterialsorequipmenttousethesignalizedintersectionatLenwoodRoadtoaccessprojectarearoadsfromandtoSR58whereverfeasible.Tothesouthernpartoftheprojectarea,accesscanbefromLenwoodRoadtoCommunityRoadandthentootherlocalroadways.Tothenorthernpartoftheprojectarea,accesscanbefromLenwoodRoadtoSantaFeRoadtoMountainViewRoadandotherlocalroadways.

Notifyemergencypersonnel,includingtheSanBernardinoCountySheriff‐Coroner’sDepartment(BarstowStation)andtheSanBernardinoCountyFireDepartment(NorthDesertDivision),oftheconstructionschedulewhenitinvolvesvehiclesthatcouldsloworblocktraffic.

Usepersonnelasnecessarytodirecttrafficandpreventvehiclesfromlininguponcountyroadsandhighwaysduringconstruction.



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AES-MM-1: Screen Above-Ground Treatment Facilities from Surrounding Areas

ImplementationTiming: Priortoandafterconstruction



FrequencyofMonitoring: Priortoandafterconstruction

FrequencyofReporting: Priortoandafterconstruction

StandardforCompletionorCompliance: Documentationthatsecurityfencing,landscapingandarchitecturalfeaturesmeetmeasurerequirements.

Priortoconstruction:Submissionofdesigndocumentsforabovegroundtreatmentplants(andanyotherfacilitieswithnewsourcesoflightandglare)demonstratingcompliance.

Afterconstruction:Photodocumentationofabovegroundtreatmentplant(andanyotherfacilitieswithnewsourcesoflightandglare)demonstratingcompliance


Mitigation Measure:

PG&Ewillinstallsecurityfencingwithprivacyslats,ascurrentlyproposed,and/orlandscapingaroundthemajorabove‐groundtreatmentfacilities,includedaspartofAlternatives4C‐3and4C‐5andasacontingencyforallalternatives.Theprivacyslateswillbeneutralshadesofbrowntominimizelandscapeintrusionfromremediationinfrastructure.Anylandscapingwouldbedrought‐tolerant,nativeandinadequateabundancetoscreenthefacilityfromdistantviews.Additionally,PG&Ewilldesignstructurestoincludearchitecturalfeaturesthatreducethebulkandscale.



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AES-MM-2: Use Low-Sheen and Non-Reflective Surface Materials on Visible Remediation Facilities and Infrastructure






StandardforCompletionorCompliance: Documentationoflightandglaretreatmentsthatmeetmeasurerequirements.

Priortoconstruction:Submissionofdesigndocumentsforabovegroundtreatmentplants(andanyotherfacilitieswithnewsourcesoflightandglare)demonstratingcompliance.

Afterconstruction:Photodocumentationofabovegroundtreatmentplant(andanyotherfacilitieswithnewsourcesoflightandglare)demonstratingcompliance.


Mitigation Measure:

PG&Ewillensurethatvisible,above‐groundremediationfacilitiesandinfrastructure(e.g.,a35‐foottallprocessbuilding)willbedesignedandconstructedtousealow‐sheenandnon‐reflectivesurfacematerial.Wallfinisheswillhavelow‐sheenandnon‐reflectivesurfacestoreducepotentialforglare.Theuseofsmooth‐trowelledsurfacesandglossypaintwillbeavoided.Ataminimum,infrastructurematerialswillbenon‐reflective,suchasearth‐tonedconcreteorgalvanizedsteelthatwouldnaturallyoxidizeashorttimeafterinstallationandwouldnotcausereflectivedaytimeglare.Thepainttypewillhaveadull,flat,orsatinfinishonlyandwillensurelong‐termdurabilityofthepaintedsurfacestotheextentpracticable.Thepaintcolorwillbetwotothreeshadesdarkerthanthegeneralsurroundingarea.PG&Ewillmaintainthepaintcolorovertime.(ThismeasuredoesnotapplytotheagriculturalirrigationinfrastructurethatisconsistentwithexistingusesandaestheticsintheHinkleyarea.)



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AES-MM-3: Apply Light Reduction Measures for Exterior Lighting






StandardforCompletionorCompliance: Documentationoflighttreatmentsthatmeetmeasurerequirements.

Priortoconstruction:Submissionofdesigndocumentsforabovegroundtreatmentplants(andanyotherfacilitieswithnewsourcesoflight)demonstratingcompliance.

Afterconstruction:Photodocumentationofabovegroundtreatmentplant(andanyotherfacilitieswithnewsourcesoflight)demonstratingcompliance.


Mitigation Measure:

PG&Ewillapplythefollowinglightreductionmeasures.

Exteriorlightswillbeinstalledatthelowestallowableheightandwillusethelow‐pressuresodiumlampswiththelowestallowablewattage(lessthan2,000lumens[150watts]).

Exteriorlightswillbeshieldedanddirecteddownward.

Theamountanddurationofnighttimelightusewillbeminimizedtothegreatestdegreepossible(i.e.,minimalamountneededtoproviderequiredsecurity).



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SE-MM-1: Manage Vacant Lands, Residences, and Structures to Avoid Physically Blighted Conditions

ImplementationTiming: Withinoneyearofacquisitionoflandscontainingabovegroundstructures



FrequencyofMonitoring: Annually


StandardforCompletionorCompliance: AnnualreportingwilldescribeanypropertiesacquiredthatcontainabovegroundstructuresandmeasurestakenbyPG&Etosecurepropertiesandavoidphysicallyblightedconditions.PG&Ewilldocumentannuallyanynewactions(suchasstructuralremoval)onpropertiespurchasedtosupportremedialactionsthatcontainstructures.


Mitigation Measure:

Ifpropertiesareacquiredaspartofprojectimplementation,PG&Ewillensurethatexistingbuildingsonthesepropertieswillberazedormaintainedalongwithotherpropertiesintheprojectareaaspartofthenormaloperationsandmaintenanceactivities.Retainedstructureswillbesecuredtopreventunauthorizedaccess.LitteranddebriswillberemovedfromvacantpropertiesacquiredbyPG&E.PG&Ewillmonitorstructurestoensurethattheyarenotusedbytrespassersorwildlife.Priortoproposeddemolitionofstructures,PG&Ewillassessthestructuresforculturalresourcesignificance(seeSection3.8,CulturalResources,inFinalEIRVolumeII)andfollowallproceduresforprotectionofsignificantculturalresourcesaccordingly.Fordemolitions,PG&Ewillfollowallstateandfederalrequirementsforaddressinglead‐basedpaint,asbestos,orotherhazardousmaterials,includingpropercontainmentanddisposal.PG&Ewillworkwithpropertysellerstoensurethatallpetsareremovedfromthepropertyuponacquisition.Ifpetsareabandonedonvacantproperties,PG&EwillworkwithSanBernardinoCountyAnimalCare&Controltoremovesuchanimalsfromthepropertiesaccordinglyandplaceinanimalshelters,whereappropriate.



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References

CaliforniaDepartmentofFishandGame.2003.MohaveGroundSquirrelSurveyGuidelines.

LahontanRegionalWaterQualityControlBoard(LahontanWaterBoard).2012.AmendedCleanupandAbatementOrderNO.R6V‐2008‐0002A3.RequiringPacificGasandElectricCompanytoCleanUpandAbateWasteDischargesofTotalandHexavalentChromiumtotheGroundwatersoftheMojaveHydrologicUnit.AdoptedonMarch14,2012.

OfficeofHistoricPreservation.2003.HistoricStructureReportFormat.Electronicdocument;<http://ohp.parks.ca.gov/pages/1069/files/historic%20structure%20report%20format.pdf>.Accessed:July19,2012.

PacificGasandElectricCompany(PG&E).2011c.Addendum#3totheFeasibilityStudy,PacificGasandElectricCompanyCompressorStation,Hinkley,California.September15.MainreportpreparedbyHaley&Aldrich.AppendicespreparedbyHaley&Aldrich,Arcadis,andCH2MHill.Available:<http://www.swrcb.ca.gov/rwqcb6/water_issues/projects/pge/index.shtml>.

SocietyofVertebratePaleontology.1995.ConformableImpactMitigationGuidelinesCommittee.Electronicdocument.<http://vertpaleo.org/The‐Society/Statements‐and‐Guidelines/Conformable‐Impact‐Mitigation‐Guidelines‐Committee.aspx>.Accessed:July19,2012.

SouthCoastAirQualityManagementDistrict.2010.TableII—OffroadEngineEmissionsRatesandComparisonUncontrolledtoTieredRatesandTieredtotieredRates.Available:<http://aqmd.gov/ceqa/handbook/mitigation/offroad/MM_offroad.html>.LastUpdated:May26,2010.

U.S.BureauofLandManagement.2005.FinalEnvironmentalImpactReportandStatementfortheWestMojavePlan.ReportpreparedbyBLMCaliforniaDesertDistrict,22835CalleSanJuanDeLosLagos,MorenoValley,CA.January.Available:<http://www.blm.gov/ca/pdfs/cdd_pdfs/wemo_pdfs/plan/wemo/Vol‐1‐Chapter1_Bookmarks.pdf>.Accessed:February11,2011.

U.S.EnvironmentalProtectionAgency(EPA).2012b.USEPAwebsite.SmallSystemsResearch,Regulations,SafeDrinkingWaterAct(SDWA).Availableat:<http://www.epa.gov/nrmrl/wswrd/dw/smallsystems/regulations.html>.Accessed:2012.

U.S.FishandWildlifeService.2009.DesertTortoiseFieldManual.December2009.Accessedfrom:<http://www.fws.gov/ventura/species_information/protocols_guidelines/>.



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U.S.FishandWildlifeService.2010b.PreparingforAnyActionthatMayOccurwithintheRangeoftheMojaveDesertTortoise(Gopherusagassizii).



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Acronyms and Abbreviations

af acre‐feetafy acre‐feetperyearAG AgricultureARB CaliforniaAirResourcesBoardAU agriculturalunitsBLM U.S.BureauofLandManagementBMPs BestManagementPracticesCAO CleanupandAbatementOrderCCR CaliforniaCodeofRegulationsCDFG CaliforniaDepartmentofFishandGameCDFW CaliforniaDepartmentofFishandWildlifeCDPH CaliforniaDepartmentofPublicHealthCEQA CaliforniaEnvironmentalQualityActCESA CaliforniaEndangeredSpeciesActCNG compressednaturalgasCO carbonmonoxideCO2 carbondioxideCO2e carbondioxideequivalentsCounty SanBernardinoCountyCr chromiumCr[T] totalchromiumCr[VI] hexavalentchromiumCRHR CaliforniaRegisterofHistoricResourcesCRPR CaliforniaRarePlantRankCWA CleanWaterActDEHP di2‐ethylhexylphthalateDWMAs DesertWildlifeManagementAreasEC electrocoagulationEIR EnvironmentalImpactReportEPA UnitedStatesEnvironmentalProtectionAgencyESA federalEndangeredSpeciesActFPA freeproductionallowance



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g/bhp‐hr gramsperbrakehorsepower‐hourGHG greenhousegasGPS globalpositioningsystemGVWR grossvehicleweightratingHASP HealthandSafetyPlanIBC InternationalBuildingCodeIPM integratedpestmanagementIRZ in‐situreductionzonesMDAQMD MojaveDesertAirQualityManagementDistrictMLDs mostlikelydescendantsMMRP mitigationmonitoringandreportingprogramMT metrictonsMWA MojaveWaterAgencyNAHC NativeAmericanHeritageCommissionNRHP NationalRegisterofHistoricPlacesO&M operationandmaintenancePCB polychlorinatedbiphenylsPG&E PacificGasandElectricCompanyPM particulatematterPM10 PM10micronsindiameterorlessPM2.5 PM2.5micronsindiameterorlessppb partsperbillionppm partspermillionppt partspertrillionPRC PublicResourcesCodeROGs reactiveorganicgasesRWQCB RegionalWaterQualityControlBoardSCAQMD SouthCoastAirQualityManagementDistrictSPCCPlan SpillPrevention,Control,andCountermeasurePlanSR StateRouteStateWaterBoard StateWaterResourcesControlBoardSVP SocietyofVertebratePaleontologySWPPP StormwaterPollutionPreventionPlanSWRCB StateWaterResourcesControlBoardTDS totaldissolvedsolidsUSEPA U.S.EnvironmentalProtectionAgencyUSFWS UnitedStatesFishandWildlifeServiceWaterBoard CaliforniaRegionalWaterQualityControlBoard,LahontanRegionWDRs wastedischargerequirements

Attachment F Mitigation Monitoring and Reporting Program · Water Board X 3.4 Geology and Soils...

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Transcript of Attachment F Mitigation Monitoring and Reporting Program · Water Board X 3.4 Geology and Soils...