Human and Ecological Risk Assessment - Earthjustice

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Appendix KScreening Analysis ResultsAppendix K. Screening Analysis ResultsTable K-1. CCW Surface Impoundment (SI) Human Health Screening Results:Groundwater-to-Drinking-Water PathwayChemical Benchmark Type HBN (mg/L)Analytes Exceeding Risk Criteria 12002 SI Porewater90th PercentileHQ(CancerRisk)Antimony Noncancer 1.17E-02 6.40E-02 5.45E+00Arsenic Cancer 2.86E-03 5.18E+00 (1.81E-02)Arsenic Noncancer 8.81E-03 5.18E+00 5.88E+02Boron Noncancer 5.87E+00 7.52E+01 1.28E+01Cadmium Noncancer 1.47E-02 1.31E-01 8.91E+00Chromium (VI) Noncancer 8.81E-02 3.66E-01 4.15E+00Cobalt Noncancer 8.81E-03 6.27E+00 7.13E+02Fluoride Noncancer 3.52E+00 1.91E+01 5.42E+00Lead MCL 1.50E-02 1.77E-01 1.18E+01Manganese Noncancer 1.38E+00 7.67E+00 5.56E+00Molybdenum Noncancer 1.47E-01 1.00E+00 6.81E+00Nickel Noncancer 5.87E-01 7.49E-01 1.27E+00Nitrate MCL 1.00E+01 6.02E+02 6.02E+01Nitrite Noncancer 2.94E+00 5.22E+00 1.78E+00Selenium Noncancer 1.47E-01 3.56E-01 2.43E+00Thallium Noncancer 2.35E-03 4.52E-02 1.93E+01Vanadium Noncancer 2.06E-01 4.78E-01 2.33E+00Analytes Below Risk Criteria 1Aluminum Noncancer 2.94E+01 2.30E+01 7.84E-01Barium Noncancer 5.89E+00 3.02E-01 5.15E-02Beryllium Noncancer 5.87E-02 5.68E-03 9.67E-02Chromium (III) Noncancer 4.40E+01 3.66E-01 8.31E-03Copper Noncancer 2.93E-01 2.84E-01 9.69E-01Mercury Noncancer 8.81E-03 2.50E-04 2.84E-02Silver Noncancer 1.47E-01 5.00E-03 3.41E-02Strontium Noncancer 1.76E+01 8.74E+00 4.96E-01Zinc Noncancer 8.81E+00 6.70E-01 7.60E-021 Risk criteria are 1E-05 cancer risk or a hazard quotient (HQ) of 1E+00 for noncancer endpoints.HBN = health-based number90th percentile = 90th percentile SI porewater concentrationHQ = hazard quotientMCL = maximum contaminant levelApril 2010–Draft EPA document. K-1
Appendix KScreening Analysis ResultsTable K-2. CCW Surface Impoundment (SI) Human Health Screening Results:Groundwater-to-Surface-Water (Fish Ingestion) PathwayChemical Benchmark Type HBN (mg/L)Analytes Exceeding Risk Criteria 190th Percentile2002 SI PorewaterHQ (Cancer Risk)Arsenic Cancer 0.23 5.18E+00 (2.24E-04)Arsenic Noncancer 0.71 5.18E+00 7.28E+00Cadmium Noncancer 0.035 1.31E-01 3.73E+00Mercury Noncancer 3.85E-06 2.50E-04 6.50E+01Selenium Noncancer 0.038 3.56E-01 9.50E+00Thallium Noncancer 0.008 4.52E-02 5.69E+00Analytes Below Risk Criteria 1Antimony AWQ 4.3 6.40E-02 1.49E-02Beryllium Noncancer 1.00 5.68E-03 5.69E-03Chromium (III) Noncancer 23,700 3.66E-01 1.54E-05Chromium (VI) Noncancer 47 3.66E-01 7.72E-03Copper 2 AWQ 1.3 2.84E-01 2.18E-01Molybdenum Noncancer 12 1.00E+01 8.43E-02Nickel Noncancer 237 7.49E-01 3.16E-03Zinc Noncancer 8.13 6.70E-01 8.24E-021Risk criteria are 1E-05 cancer risk or a hazard quotient (HQ) of 1E+00 for noncancer endpoints.2 Fish bioconcentration factor values for copper are zero. HBN based on National Ambient Water Quality Criteria.HBN = health-based number90th percentile = 90th percentile SI porewater concentrationHQ = hazard quotientAWQ = National Ambient Water Quality CriteriaMCL = maximum contaminant levelApril 2010–Draft EPA document. K-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 Characterization4.1
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Section 4.0Risk Characterizationund
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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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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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Appendix BAttachment B-1: CCW Dispo
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Appendix BAttachment B-2: CCW WMU D
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Appendix CSite DataWMU and the wate
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Appendix CSite DataFigure C-1. Exam
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Appendix CSite Dataeach site, eithe
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Appendix CSite DataBecause EPACMTP
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Appendix CSite DataHydrogeologic Se
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Appendix CSite DataFigure C-2. EPAC
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Appendix CSite DataEPACMTP Climate
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Appendix CSite DataRF1 Reach Types
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Appendix CSite DataTable C-9. Regio
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Appendix CSite DataHydrologicRegion
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Appendix CSite DataClawges, R.M., a
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Appendix CAttachment C-1: Soil Data
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Appendix CAttachment C-2: Hydrogeol
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Appendix CAttachment C-4: Waterbody
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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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Page 373 and 374: Appendix HEcological BenchmarksRisk
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Page 381 and 382: Appendix ICalculation of Health-Bas
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Page 389 and 390: Appendix JChemical-Specific Inputs
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Page 395 and 396: Appendix KScreening Analysis Result
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Page 399 and 400: Appendix LTime to Peak Concentratio
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Human and Ecological Risk Assessment - Earthjustice

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