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BHI-01374Rev.0DataQualityObjectiveSummaryReportforInactiveMiscellaneousUndergroundStorageTanks(IMUSTs)RiskAssessment/HazardBasis3UHSDUHGIR3UHSDUHGIRUUWKWKH8H866’HS’HSDDUWPHUWPHQQWRWRII(QHUJ\(QHUJ\5LF5LFKKODQG2SHUDODQG2SHUDWWLRQV2LRQV2IIILFHILFH22IILFIILFHHRRII(QYLUR(QYLURQQPHQWDPHQWDOO5HVWRUD5HVWRUDWWLRQLRQ6XEPLWWH6XEPLWWHGGE\E\%HFKW%HFKWHHO+DQIRUO+DQIRUGG,QF,QFTRADEMARKDISCLAIMERReferencehereintoanyspecificcommercialproduct,process,orservicebytradename,trademark,manufacturer,orotherwise,doesnotnecessarilyconstituteorimplyitsendorsement,recommendation,orfavoringbytheUnitedStatesGovernmentoranyagencythereoforitscontractorsorsubcontractors.Thisreporthasbeenreproducedfromthebestavailablecopy.Availableinpapercopyandmicrofiche.AvailableforaprocessingfeetoU.S.DepartmentofEnergyanditscontractorsfrom:U.S.DepartmentofEnergyOfficeofScientificandTechnicalInformationP.O.Box62OakRidge,TN37831-0062(865)576-8401fax:[phone]email:[e-mail]::U.S.DepartmentofCommerceNationalTechnicalInformationService5285PortRoyalRoadSpringfield,VA22161(800)553-6847fax:[phone]email:[e-mail]:(11/99)BHI-01374Rev.0ou:NIATSD:N/AERA:N/AAPPROVALPAGETitle:DataQualityObjectiveSummaryReportforInactiveMistiellaneousUndergroundStorageTanks(IMUSTs)RiskAssessment/HazardBasisrApproval:R.G.Egge,TaskLeadSignatureDateJ.J.McGuire,ProjectManagerTheapprovalsignatureonthispageindicatesthatthisdocumenthasbeenauthorizedforinformationreleasetothepublicthroughappropriatechannels.Nootherformsorsignaturesarerequiredtodocumentthisinformationrelease.BHI-01374Rev.0DataQualityObjectiveSummaryReportforInactiveMiscellaneousUndergroundStorageTanks(IMUSTs)RiskAssessment/HazardAuthorsA.AntipasI.D.JacquesR.W.OvinkCH2MHillHanford,Inc.DatePublishedSeptember2000BHI-01374Rev.0DQOSummaryReportforIMUSTRiskAssessment/HazardBasisSeptember2000ES-1EXECUTIVESUMMARYThepurposeofthisdataqualityobjective(DQO)reportistosupportdecision-makingactivitiesastheyapplytotheriskassessment/hazardbasisforInactiveMiscellaneousUndergroundStorageTanks(IMUSTs)241-B-361,241-T-361,241-U-361,and270-W.TheupdateoftheIMUSTriskassessment/hazardbasisforthe241-B-361settlingtank,241-T-361settlingtank,241-U-361settlingtank,and270-WneutralizationtankisthemaindriverforthisDQOeffort.Theprimaryprojectobjectiveistoestablishiftheexistingtankcharacterizationdataaresufficienttosupporttheriskassessment/hazardbasisupdateforthefourIMUSTs.Iftheexistingdataarenotsufficientfortheriskassessment/hazardevaluation,astrategyforcollectingadditionaldataandinformationwillbedeveloped.ThisDQOandtheproposedcharacterizationeffortaretieddirectlytotherelativeriskrankingspresentedinEnvironmentalRestorationContactManagementPlanforInactiveMiscellaneousUndergroundStorageTanks(BHI1999).TheprimarysamplingmethodologyproposedinthisreportinvolvesthecollectionandanalysisofvaporsamplesfromtheheadspaceofselectedIMUSTs.Inaddition,collectionoflimitedinsitumeasurementsisproposed.Theproposedsamplesandmeasurementswillprovidedataofsufficientqualityandaccuracytosupporttheriskassessment/hazardbasisupdate.Becausethescopeofthisprojectdoesnotincludewastecharacterizationorwastedisposition,directsamplingofthetanksludgeisnotrecommended.Samplingthesludgeinthesetankswouldrequirecostlyremote-handlingmethodsaswellascomplexwastedisposalissues.BHI-01374ExecutiveSummaryRev.0DQOSummaryReportforIMUSTRiskAssessment/HazardBasisSeptember2000ES-2BHI-01374Rev.0DQOSummaryReportforIMUSTRiskAssessment/HazardBasisSeptember2000iTABLEOFCONTENTS1.0STEP1–STATETHEPROBLEM..........................................................................1-11.1PROJECTOBJECTIVES.................................................................................1-11.2PROJECTASSUMPTIONS.............................................................................1-11.3PROJECTISSUES..........................................................................................1-21.3.1GlobalIssues........................................................................................1-21.3.2Task-SpecificTechnicalIssuesandResolutions....................................1-21.4EXISTINGREFERENCES..............................................................................1-31.5SITEBACKGROUNDINFORMATION........................................................1-41.6DATAQUALITYOBJECTIVETEAMMEMBERSANDKEYDECISIONMAKERS......................................................................................1-51.7PROJECTBUDGETANDCONTRACTUALVEHICLES.............................1-51.8MILESTONEDATES.....................................................................................1-61.9CONTAMINANTSOFCONCERN.................................................................1-61.9.1TotalListofContaminantsofPotentialConcern...................................1-71.9.2ContaminantsofPotentialConcernAddressedbyConcurrentRemedi