Laserfiche WebLink
1 <br /> 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 S As (ft) to (min) to (days) r (ft) Q (GPM) <br /> (GPD/ft) <br /> EW-1 357.5 0.15 9.6 0.5 3.47 x 10-4 0.5 13 <br /> MW-1 9,533 0.011 0.36 1.3 .9.03 x 104 15 13 <br /> MW-2 4,185 0.011 0.82 1.3 9.03 x 10-4 10 13 <br /> MW-4a 4,638 0.079 0.741. 1.3 1 9.03 x 10-4 4 13 <br /> T = transmissivity <br /> S = storativity <br /> As— draw-down per 1-logarithmic 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 CeoEnvironmenfal,Inc. <br />