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Human and Ecological Risk Assessment - Earthjustice

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Appendix LTime to Peak Concentration at Receptor Well10090Percentile8070605040No LinerClay LinerComposite Liner30201000 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000Time to Peak Concentration (years)73% of composite liner results have no infiltration <strong>and</strong> are not plotted on this graph.Figure L-4. Time to peak distribution for arsenic V: l<strong>and</strong>fills, all waste types.12010080Percentile604020No LinerClay LinerComposite Liner00 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000Time to Peak Concentration (years)35.6% of composite liner results have no infiltration <strong>and</strong> are not plotted on this graph.Figure L-5. Time to peak distribution for arsenic V: surface impoundments, all wastetypes, full 10,000 year time frame.April 2010–Draft EPA document. L-5

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