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Apr 12, 2015 · C. Performance Standards and Siting Criteria 1. D. General Requirements 3. ... and post-closure periods. As approved by the Department, a standard method for determining leachate quantity must be used, such as "Hydrologic Evaluation of Landfill Performance (HELP) Model", (EPA/600/R-94/168a and EPA/600/R-94/168b). This assessment must be ... ................
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