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' ° � fryi9�[nv�smir�wsr�rraraaaa2vun'nwwsa�,s®�aa'� <br /> 19 <br /> 7-Bleven/Stockton <br /> April, 1988 <br /> Based on the results of the storativity values calculated, <br /> the average of values from analysis of MW-1 pump test data and <br /> MW-4, recovery test data is interpreted to be the most represen- <br /> tative value of the shallow aquifer's transmissivity. This value <br /> is 750 ft2/day which is equivalent to 5,610 gpd/ft. <br /> In order to estimate the area hydraulically controlled by <br /> the recovery well, capture-zone radii were calculated us`•r,, cne <br /> average T value of. 5,160 gpd/ft derived from the aquifer tests. <br /> ,g <br /> The calculations (based an the work of 1{eely and Tsang, 1987) are <br /> presented in Appendixz vi, and the results are presented in Table <br /> 4. <br /> s TABLE 4 <br /> 4 CAPTURE ZONE RADII <br /> Qr <br /> ,w int eft <br /> gpm gpd <br /> 5 7,200 102 321 <br /> 7.5 10,800 153 481 <br /> 7.0 14,400 <br /> 204 624 <br /> rdg = radius downgradient <br /> rcg = radius cross-gradient <br /> This data indicates that a pumping rate of between 5 and 10 <br /> gpm would adequately capture the dissolved-hydrocarbon plume as <br /> it currently exists in the groundwater beneath the site (see <br /> Figure 12 - Capture Zone Map) . <br /> FAGROUNDWATFR <br /> TECHNOLOGY,INC. <br /> ... <br />