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Beacon Station No 419 August 13, 1997 <br /> Stockton, California Aquifer Testing Report <br /> The results of the groundwater pumping tests and capture zone calculations reflect a <br /> relatively flat groundwater gradient beneath the site, which will encourage groundwater <br /> pumping as a remedial option for the recovery of petroleum hydrocarbon-impacted <br /> groundwater from beneath the site With 66,600 gallons of groundwater being pumped from <br /> well MW-3, approximately 1 3 pounds of TPHg and 0 25 pound of benzene was removed <br /> from the groundwater <br /> Please call us at(916) 939 -2170 if you have any questions <br /> Sincerely, <br /> HORIZON ENVIRONMENTAL INC. <br /> Gary D Barker <br /> Senior Project Manager <br /> J <br /> Kenny ateik OF CA1.R�' <br /> Registered Geologist <br /> C HG No 323 <br /> Figure 1 Site Vicinity Map <br /> Figure 2 Site Plan/ Groundwater Contour Map for May 28, 1997 <br /> Figure 3 Groundwater Pumping Contour Map for June 9, 1997 <br /> Figure 4 Theoretical Capture Zone Map at 3 0 GPM <br /> Figure 5 Theoretical Capture Zone Map at 2 5 GPM <br /> Table 1 Groundwater Analytical Data <br /> Attachment A Horizon Field Methods and Procedures <br /> Attachment B Horizon Time-Drawdown and Distance-Drawdown Data and Graphs <br /> Attachment C Chain of Custody and Laboratory Reports <br /> 1419 11-rpt HORIZON ENVIRONMENTAL INC <br />