Human and Ecological Risk Assessment - Earthjustice

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Appendix CAttachment C-2: Hydrogeologic EnvironmentPlantAttachment C-2: Hydrogeologic EnvironmentHydrogeologic SettingHydrogeologic EnvironmentCode Description Code DescriptionBig Cajun 2 10Ba River Alluvium WithOverbank DepositsA B Brown 6Fa River Alluvium WithOverbank DepositsA/C Power-Ace Operations6 River Valleys and Floodplainswith Overbank Deposit6 River Valleys and Floodplainswith Overbank Deposit2C Alluvial Fans 5 Alluvial Basins Valleys andFansAllen 10Ba River Alluvium WithOverbank DepositsAlma 7Ea River Alluvium WithOverbank DepositsAlma 7Eb River Alluvium WithoutOverbank DepositsAntelope Valley 7GThin Till Over BeddedSedimentary Rock6 River Valleys and Floodplainswith Overbank Deposit6 River Valleys and Floodplainswith Overbank Deposit7 River Valleys and Floodplainswithout Overbank DepositsPercentageComment100 Predominant alluvial setting (100%alluvium); soils have significant fines(SCL+SLT = 95%)100 Predominant alluvial setting; soils havesignificant fines (SCL+SLT = 95%)100 Based on surficial geology; consistent withalluvial fan setting100 Setting based on aquifer coverages, surficialgeology; Heath (1985) and soils indicateoverbank deposits50 Percentage based on SNL/SCL soils; settingbased on productive aquifers and surficialgeology50 Percentage based on SNL/SCL soils; settingbased on productive aquifers and surficialgeology3 Till Over Sedimentary Rock 100 Based on principal aquifer and surficialgeology coveragesArkwright 8D Regolith 1 Metamorphic and Igneous 100 Most common Piedmont setting (residuum)Asheville 8B Alluvial Mountain Valleys 5 Alluvial Basins Valleys andFansBaldwin 7Ea River Alluvium WithOverbank DepositsBaldwin 7G Thin Till Over BeddedSedimentary Rock6 River Valleys and Floodplainswith Overbank Deposit100 Appropriate for alluvial blue ridge valley(colluvium)70 Percentage based on surficial geology (74%Floodplain and alluvium gravel terraces)3 Till Over Sedimentary Rock 30 Percentage based on surficial geology (74%Floodplain and alluvium gravel terraces)(continued)April 2010–Draft EPA document.C-2-1
Appendix CAttachment C-2: Hydrogeologic EnvironmentPlantHydrogeologic SettingHydrogeologic Environment (continued)Hydrogeologic EnvironmentCode Description Code DescriptionBarry 10Ba River Alluvium WithOverbank DepositsBay Front 7Bb Outwash Over BeddedSedimentary Rock6 River Valleys and Floodplainswith Overbank DepositPercentageComment100 Predominant alluvial setting, significant finegrained soils = overbank deposits2 Bedded Sedimentary Rock 70 Percentage based on productive aquifersBay Front 7D Buried Valley 4 Sand and Gravel 30 Percentage based on productive aquifersBay Shore 7Ac Glacial Till Over SolutionLimestone12 Solution Limestone 100 Closest setting considering carbonateaquifers, high SCL soils, and lake depositssurficial geologyBelews Creek 6H Triassic Basins 2 Bedded Sedimentary Rock 50 Sources somewhat dissimilar; fraction basedon surficial geology; Triassic basinBelews Creek 8D Regolith 1 Metamorphic and Igneous 50 Sources somewhat dissimilar; fraction basedon surficial geologyBen French 6Da Alternating Sandstone,Limestone and Shale - ThinSoilBen French 6Fa River Alluvium WithOverbank DepositsBig Sandy 6Da Alternating Sandstone,Limestone and Shale - ThinSoilBig Sandy 6Fa River Alluvium WithOverbank Deposits2 Bedded Sedimentary Rock 60 Percentage, thin soils based on surficialgeology6 River Valleys and Floodplainswith Overbank Deposit40 Percentage based on surficial geology;significant fine soils (25% SCL)2 Bedded Sedimentary Rock 50 Percentage based on surficial geology; thinsoils inferred from colluvium6 River Valleys and Floodplainswith Overbank Deposit50 Percentage based on surficial geology; soilshave significant fines (SCL+SLT = 95%)Big Stone 7Ba Outwash 8 Outwash 100 Based on surficial geologyBlack DogSteam Plant7BbOutwash Over BeddedSedimentary RockBlue Valley 7Aa Glacial Till Over BeddedSedimentary Rock2 Bedded Sedimentary Rock 100 Based on surficial geology, aquifer coverages3 Till Over Sedimentary Rock 80 Percentage based on Heath (1985),productive aquifers(continued)April 2010–Draft EPA document.C-2-2
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This draft document has been prepar
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CCWTable of ContentsTable of Conten
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CCWTable of ContentsList of Figures
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CCWTable of Contents4-22. Summary o
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CCWList of AcronymsAcronymDefinitio
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CCWList of AcronymsApril 2010-Draft
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Executive SummaryHuman and Ecologic
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Section 1.0Introduction1.0 Introduc
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Section 1.0Introduction1.3.2 Exposu
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Section 1.0IntroductionThis methodo
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Section 1.0Introduction1.4 Document
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Section 2.0Problem Formulationdata
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Section 2.0Problem FormulationTable
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Section 2.0Problem Formulationsmall
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Section 2.0Problem FormulationFigur
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Section 2.0Problem Formulationonsit
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Section 2.0Problem Formulation2.3 S
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Section 2.0Problem Formulationand C
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Section 2.0Problem Formulationof dr
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Section 3.0Analysisscale analysis.
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Section 3.0Analysis• The RfD is a
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Section 3.0Analysis3.1.2 Ecological
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Section 3.0AnalysisEcological Risk
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Section 3.0Analysisfor the screenin
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Section 3.0AnalysisTable 3-5. Scree
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Section 3.0Analysisapproximately 30
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Section 3.0Analysisthose input file
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Section 3.0AnalysisCCW Waste TypesC
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Section 3.0Analysis• An in-depth
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Section 3.0Analysisused to determin
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Section 3.0Analysisconsolidation. A
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Section 3.0Analysis3.4.4 Model Outp
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Section 3.0Analysisclogged region o
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Section 3.0Analysissurface impoundm
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Section 3.0Analysisobtained from a
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Section 3.0AnalysisIn the saturated
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Section 3.0Analysis• The receptor
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Section 3.0Analysissediment and por
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Section 3.0AnalysisTable 3-11. Alum
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Section 3.0Analysischild was aged f
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Section 3.0Analysisa per kilogram b
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Section 3.0AnalysisNoncancer risk w
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Section 4.0Risk Characterization4.0
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Section 4.0Risk CharacterizationNot
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Section 4.0Risk Characterization90t
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Section 4.0Risk Characterizationbas
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Section 4.0Risk CharacterizationZer
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Section 4.0Risk Characterization4.1
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Section 4.0Risk Characterizationund
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Section 4.0Risk CharacterizationLin
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Section 4.0Risk CharacterizationRis
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Section 4.0Risk CharacterizationTab
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Section 4.0Risk CharacterizationThe
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Section 4.0Risk Characterizationin
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Section 4.0Risk Characterizationand
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Section 4.0Risk Characterizationdis
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Section 4.0Risk Characterizationana
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Section 4.0Risk Characterizationmay
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Section 4.0Risk Characterizationval
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Section 4.0Risk Characterizationars
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Section 4.0Risk Characterizationwas
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Section 4.0Risk Characterizationche
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Section 4.0Risk CharacterizationMer
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Section 4.0Risk CharacterizationWat
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Section 4.0Risk CharacterizationEPA
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Section 4.0Risk CharacterizationEco
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Section 4.0Risk Characterization•
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Section 4.0Risk Characterization•
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Section 5.0ReferencesFinkelman, R.B
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Section 5.0ReferencesU.S. EPA (Envi
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Section 5.0Referenceshttp://www.epa
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Section 5.0ReferencesDisposal of Co
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Appendix AConstituent DataA.1 Data
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Appendix AConstituent DataA.2.1 Sel
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Appendix AConstituent Data2. Select
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Appendix AAttachment A-1: Sources o
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April 2010-Draft EPA document.[This
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Appendix AAttachment A-2: CCW Const
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Appendix A Attachment A-3Table A-3-
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Appendix A Attachment A-3Cr IIIHgAg
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Appendix A Attachment A-3NO3CNCd, C
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Appendix BWaste Management UnitsWas
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Appendix BWaste Management Units•
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Appendix BWaste Management Units(e.
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Log(capacity, cubic yards)Log(area,
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Appendix BWaste Management UnitsB.7
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Appendix BAttachment B-1: CCW Dispo
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Page 265 and 266: Appendix CSite DataHydrologicRegion
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Appendix DMINTEQA2 Nonlinear Sorpti
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Appendix EEquationsIf Cwctot > Csol
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Appendix EAttachment E-1: Surface W
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Appendix EAttachment E-2: Fish Conc
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Appendix EAttachment E-3: Intake Ra
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Appendix FHuman Exposure Factorswer
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Appendix FHuman Exposure FactorsBec
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Appendix FHuman Exposure FactorsF.1
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Appendix GHuman Health BenchmarksG.
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Appendix GHuman Health BenchmarksHu
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Appendix GHuman Health BenchmarksU.
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Appendix HEcological BenchmarksRisk
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Appendix HEcological BenchmarksH.1.
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Appendix HEcological BenchmarksCons
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Appendix HEcological BenchmarksU.S.
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Appendix ICalculation of Health-Bas
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Appendix JChemical-Specific Inputs
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Appendix JChemical-Specific Inputs
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Appendix KScreening Analysis Result
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Appendix LTime to Peak Concentratio
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