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a <br />SURFACE PRIOR <br />TO MINING <br />PIT BOTTOM <br />ASH DISPOSAL <br />BENCH ASH <br />DISPOSAL TROUGH ASH <br />'t DISPOSAL MAXIMUM THEORETICAL <br />t GROUNDWATER ELEVATION <br />PIT BOTTOM <br />16% SLOPE <br />FIGURE 4.3-22 Conceptualization of Ash Disposal Locations with respect to maximum <br />theoretical groundwater elevation. <br />