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u <br /> <br />TABLE - 2 <br />Calculation of Postmining Elevation for Test Area <br /> Planimeter Elevation Weight Average Factor <br />Area Units (in2) (f t) (in2 - ft) <br /> <br />I 4.33 7437.5 32204.375 <br />2 3.47 7460.0 25886.200 <br />3 1.09 7422.5 8090.525 <br />4 1.71 7417.5 12683.925 <br />5 I.II 7412.5 8227.875 <br />6 0.22 7405.0 1629.100 <br />7 0.05 7398.5 369.925 <br />8 0.19 7407.5 1407.425 <br />9 0.17 7403.0 1258.510 <br />10 0.23 7407.5 1703.725 <br />II 0.08 7408.0 592.640 <br />12 1.01 7480.0 7554.800 <br />13 0.36 7592.0 2733.120 <br />14 0.25 7472.5 1868.125 <br />IS 0.25 7477.5 1869.375 <br />16 0.05 7485.0 374.250 <br />17 0.19 7471.5 1419.585 <br />18 0.01 7495.5 74.955 <br />Total 14.77 <br />109948.435 <br />Average Postmining Elevation 109948.435 in2 - ft = 7444.04 ft <br />14.77 in2 <br />r1 <br />~J <br />