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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />~_ <br />3 <br />0 <br />r <br />N <br />Z <br />3 <br />O <br />Oa <br />O <br />J <br />Q <br />O <br />w <br />1 10 100 <br />TIME SINCE PUMPING STARTED (min) <br />POWDERHORN COAL, CO (CRDA#1) <br />PZ 81-3, RESIDUAL-DRAWDOWN PLOT <br />1000 <br />PLATE 4 <br />POWDERHORN COAL, CO. (CRDA#1) <br />PZ 87-3, T1ME-DRAWDOWN PLOT <br />1 10 100 <br />RATIO, Ut' <br />t =TIME SINCE PUMPING STARTED, t' = TIME SINCE PUMPING STOPPED. <br />s'= RECOVERY DEPTH TO ORIGINAL WATER SURFACE. <br />