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CONSTANT RATE PUMP TEST RWfB ' <br /> RW 1 B was pumped at a rate of 4 11 gpm The most striking thing seen during the test was that <br /> drawdowns occurred both in the upper sand and the lower sand With the higher Transmissivity(T) <br /> of the second aquifer it was possible to see the advent of the drawdown in the different wells The <br /> drawdowns were first seen in PZIB then PZ213 At the same time the drawdown first appeared in <br /> PZI IA indicating that vertical leakage was becoming more dominate After the drawdown was <br /> seen in PZ 1 A it then appeared to RW 1 A suggestion that in some the silty clay is impeding vertical <br /> flow while in other areas it does not form a significant barrier The drawdowns seen in the <br /> observations wells were so strongly influenced by leakage between the two aquifers that only the <br /> early data from the production well could be used to produce an estimate of the Transmissivity(T) <br /> of the upper aquifer Using the Cooper and Jacob straight-line method the T was calculated to be <br /> 1317 ft'/day At RW 1B the lowerr sand is approximately 8 feet thick so the resulting Hydraulic <br /> Conductivity(K) is 16 4/day(131 7ft/day 18 Oft) This value is only an estimate because of the <br /> presence of cross-aquifer leakage <br /> S <br /> Pump Test 1/20-27103 <br />