Human and Ecological Risk Assessment - Earthjustice

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Appendix KScreening Analysis ResultsTable K-3. CCW Landfill Leachate Human Health Screening Results:Groundwater-to-Drinking-Water PathwayChemical Benchmark Type HBN (mg/L)Analytes Exceeding Risk Criteria 12002 Landfill Leachate90th PercentileHQ(CancerRisk)Antimony Noncancer 1.17E-02 2.61E-01 2.22E+01Arsenic Cancer 2.86E-03 3.94E-01 (1.38E-03)Arsenic Noncancer 8.81E-03 3.94E-01 4.48E+01Boron Noncancer 5.87E+00 1.06E+01 1.80E+00Cadmium Noncancer 1.47E-02 4.94E-02 3.37E+00Chromium (VI) Noncancer 8.81E-02 2.00E-01 2.27E+00Cobalt Noncancer 8.81E-03 8.25E-02 9.33E+00Fluoride Noncancer 3.52E+00 6.34E+00 1.80E+00Lead MCL 1.50E-02 2.39E-01 1.59E+01Molybdenum Noncancer 1.47E-01 6.16E-01 4.20E+00Nitrite Noncancer 2.94E+00 3.47E+00 1.18E+00Selenium Noncancer 1.47E-01 1.76E-01 1.20E+00Thallium Noncancer 2.35E-03 5.00E-02 2.13E+01Vanadium Noncancer 2.06E-01 4.50E-01 2.19E+00Analytes Below Risk Criteria 1Aluminum Noncancer 2.94E+01 1.05E+01 3.58E-01Barium Noncancer 5.89E+00 1.60E+00 2.73E-01Beryllium Noncancer 5.87E-02 1.58E-02 2.70E-01Chromium (III) Noncancer 4.40E+01 2.00E-01 4.54E-03Copper Noncancer 2.93E-01 1.50E-01 5.12E-01Cyanide Noncancer 5.87E-01 6.32E-02 1.08E-01Manganese Noncancer 1.38E+00 1.37E+00 9.92E-01Mercury Noncancer 8.81E-03 2.69E-03 3.06E-01Nickel Noncancer 5.87E-01 3.09E-01 5.27E-01Nitrate MCL 1.00E+01 2.83E+00 2.83E-01Silver Noncancer 1.47E-01 3.95E-02 2.69E-01Strontium Noncancer 1.76E+01 9.70E+00 5.51E-01Zinc Noncancer 8.81E+00 1.94E+00 2.20E-011Risk criteria are 1E-05 cancer risk or a hazard quotient (HQ) of 1E+00 for noncancerendpoints, applied to 90th percentile concentrations.HBN = health-based number90th percentile = 90th percentile concentrationHQ = hazard quotientMCL = maximum contaminant levelApril 2010–Draft EPA document. K-3
Appendix KScreening Analysis ResultsChemicalTable K-4. CCW Landfill Leachate Human Health Screening Results:Groundwater-to-Surface-Water PathwayAnalytes Exceeding Risk Criteria 1Benchmark TypeHBN(mg/L)2002 Landfill Leachate90 th Percentile HQ (Cancer Risk)Arsenic Cancer 0.23 3.94E-01 (1.71E-05)Cadmium Noncancer 0.035 4.94E-02 1.41E+00Mercury Noncancer 3.85E-06 2.69E-03 7.00E+02Selenium Noncancer 0.038 1.76E-01 4.69E+00Thallium Noncancer 0.008 5.00E-02 6.29E+00Analytes Below Risk Criteria 1Antimony AWQ 4.3 2.61E-01 6.07E-02Arsenic Noncancer 0.71 3.94E-01 5.54E-01Beryllium Noncancer 1.00 1.58E-02 1.59E-02Chromium (III) Noncancer 23,700 2.00E-01 8.44E-06Chromium (VI) Noncancer 47 2.00E-01 4.22E-03Copper 2 AWQ 1.3 1.50E-01 1.15E-01Cyanide AWQ 222 6.32E-02 2.85E-04Molybdenum Noncancer 12 6.16E-01 5.20E-02Nickel Noncancer 237 3.09E-01 1.30E-03Zinc Noncancer 8.13 1.94E+00 2.38E-011Risk criteria are 1E-05 cancer risk or a hazard quotient (HQ) of 1E+00 for noncancer endpoints, applied to 90th percentileconcentrations.2Fish bioconcentration factor values for copper are zero. HBN based on National Ambient Water Quality Criteria.HBN = health-based number90th percentile = 90th percentile concentrationHQ = hazard quotientAWQ = National Ambient Water Quality CriteriaMCL = maximum contaminant levelApril 2010–Draft EPA document. K-4
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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 CharacterizationTab
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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-3: Climate C
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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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Appendix EAttachment E-1: Surface W
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Page 367 and 368: Appendix GHuman Health BenchmarksG.
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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 393: Appendix KScreening Analysis Result
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Page 399 and 400: Appendix LTime to Peak Concentratio
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