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I� <br /> i <br /> s <br /> Milli <br /> I . <br /> CAPTURE ZONE PARAMETERS: <br /> rdg = radius downgradient <br /> rCg = radius cross-gradient = rdgr <br /> For this site, 5 gpm (7200 gpd) was used as a pumping rate <br /> (Q) and the hydraulic gradient (dh/al) was estimated to be 0.002 <br /> from the most recent groundwater level measurements. <br /> Transmissivity was taken to be 5,610 gpd/ft as an average value <br /> for aquifer hydraulic conductivit,?. The capture zone was <br /> calculated as follows: <br /> rdg = (7200 gpd) = 102 ft. <br /> 27 (5610 gpd/ft) (0.002) <br /> rcg = (50 ft) 7 = 160 ft <br /> The following Table summarizes capture zone calculations: <br /> r.m <br /> i ; <br /> CAPTURE ZONE RADII <br /> Q gpm rdg rc;g <br /> k 5 102 321 <br /> f 7.5 153 481 <br /> lE <br /> t� 10 204 642 <br /> i <br /> j <br /> 6A <br /> l y <br /> `r <br />