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• GROUND WATER PUMP TEST DRAW-DOWN RESULTS <br /> SIERRA LUMBER <br /> 375 West Hazelton Avenue, Stockton, California <br /> DRAW-DOWN <br /> 10-Minute 100-Minute 200-Minute 300-Minute <br /> EW-1 12 2 FT 21 8 FT 24 4 FT 26 2 FT <br /> MW-1 0 32 FT 0 68 FT 0 79 FT 0 86 FT <br /> MW-2 0 66 FT 1 48 FT 1 72 FT 1 87 FT <br /> MW-4a 0 65 FT 1 39 FT 1 61 FT 1 76 FT <br /> . CALCULATIONS <br /> T <br /> (GPD/ft) S As (ft) to (min) to (days) r (ft) Q (GPM) <br /> EW-1 3575 0 15 96 05 347x 10-4 05 13 <br /> MW-1 9,533 0 011 036 1 3 9 03 x 104 15 13 <br /> MW-2 4,185 0 011 082 1 3 9 03 x 10-4 10 13 <br /> MW-4a 4,638 0 079 074 1 1 3 1 903 x 10' 4 13 <br /> T = transmissivlty <br /> S = storativity <br /> As = draw-down per 1-loganthmtc cycle <br /> to=intercept of the straight line at the zero-time scale axis <br /> r= radius from pumping well In feet <br /> Q = constant pumping rate <br /> Advanced GeoEnvironmental,Inc <br />