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1 <br /> TEST #3: MONITORING WELL MW-7 <br /> I = depth of well - depth to water = 63.10 ft - 59.65 ft = 3.45 ft <br /> ' d = oft <br /> = 35% (porosity of filter pack is assumed to be same as aquifer) <br /> m = 50 ft (assumed; no boring has penetrated more than 20 feet of aquifer) <br /> ( � g Pe 9 ) <br /> ' rw = 4" = .333ft <br /> r"7 = (1 in)2 x (1-.35) + .35(4 in)z = .65 int + .35(16 in) = 5.6 inz = .466 ft2 <br /> A = 1.9 from Figure 23.1 of Dawson and Istok (1991) <br /> ' B = .27 from Figure 23.1 0£Dawson and Istok (1991) <br /> ' tL = 16.75 minutes from recovery curve MW-7 A <br /> or 15.08 minutes from recovery curve MW-7 B <br /> + 1.9 + .35 x In(50 ft - 3.45 ft) -1 <br /> In(3.45 ftl.333 ft) (3.45 ft - 0 ft)/.333 ft -- <br /> ' 1.11 + 1.9 + .35(3.84) -1 <br /> 2.33 10.36 - {.472 + .3131-1 = 1.27 <br /> K = .466 ft2 x 1.27 = .59 ft, = .0051 ft/min = 7.35 May <br /> 2(3.45 ft - 0 ft)16.75 min 115.57 ft-min <br /> ' or K = .466 ft2 x 1.27 = .59 ft' = .0056 ft/min = 8.16 da <br /> 2(3.45 ft - 0 ft)15.08 min 104.05 ft-min <br /> C,m,,;d A.& IK <br /> ALA PARR-3-MA7 <br />