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Human and Ecological Risk Assessment - Earthjustice

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Appendix LTime to Peak Concentration at Receptor Well12010080Percentile6040Clay LinerNo Liner2000 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-6. Time to peak distribution for arsenic V: surface impoundments, all wastetypes, shorter time frame.10090807060Percentile504030No LinerClay LinerComposite Liner201000 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-7. Time to peak distribution for boron: l<strong>and</strong>fills, all waste types.April 2010–Draft EPA document. L-6

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