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����A <br /> Working To Restore Nature <br /> The Neuman type curve analysis computes a B-beta value which is equal to <br /> B - r2ky where <br /> D2kh <br /> r = distance of observation well to pumping site <br /> d = saturated thickness of water-bearing zone <br /> k = vertical hydraulic conductivity <br /> kK = horizontal hydraulic conductivity <br /> The data from wells MW-6 and MW-7 yielded B values of 0 8 and 0 01, respectively Using <br /> the previously stated equation, this indicates ratios of horizontal to vertical hydraulic <br /> conductivity of 35 to 66, or an approximately 15 to 17 order of magnitude difference, which <br /> is consistent with the stratified sediments encountered at this site <br /> Zone of Capture <br /> An estimate of the steady state downgradient limit of an extraction well capture zone can <br /> be made using the following equation <br /> . r, = Q/27rTi, where <br /> rc = limit of capture zone downgradient of a pumping test well (point where <br /> pumping induced groundwater velocity equals the natural velocity), <br /> Q = pumping rate <br /> T = average transmisstvity <br /> i = average ground-water gradient magnitude <br /> For extraction of 3 5 gpm from well PTW-1 and average values of T and i based on data <br /> collected during the pumping test, <br /> r. W 18 feet <br /> 38032-10 <br />