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1 <br /> 1 <br /> TEST #4: MONITORING WELL MW-1 <br /> 1 = depth of well - depth to water = 63.64 ft - 59.76 ft = 3.88 ft <br /> d = oft <br /> 35% (porosity of aquifer is less than filter pack, because well is completed in <br /> upper 5-foot silty zone of aquifer) <br />' m = 50 ft (assumed; no boring has penetrated more than 20 feet of aquifer) <br /> r,,, = 4" = .333 ft <br />' r. _ (2 in)' x (1-.20) + .20(4 in)2 = 3.2 int + .20(16 int) = 11.2 int = .933 ft' <br /> A = 1.9 from Figure 23.1 of Dawson and Istok (1991) <br /> B = .28 from Figure 23.1 of Dawson and Istok (1991) f <br />' tL = 113 minutes from equation <br /> = 1.1 + 2.13 + .35xln50ft - 9.59ft 1 <br /> In{Rhw) f � <br /> ln(9.59 ft/.333 ft) (9.59 ft - 0 ft)/.333 ft = <br /> 1.11 + 2.3 + .35(3.69) <br /> 3.36 28.79 = 1.327 + .125}-1 = 2.21 <br />' <br /> K = .466 ft2 x 2.21 = 1.03 ft' = .00047 ft/min = .6_ 8 ft/dgy <br />' 2(9.59 ft - 0 ft)113 min 2167 ft-min <br /> AAA PAWL-2&948.47 - <br />