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I% <br /> f <br /> New monitoring wells MW-7 and MW-8 were developed on July 7, 1995 using sterile, <br /> =1' polyethylene bailers. Bailing removed turbid water from the wells until clear water appeared. <br /> The monitoring wells were sampled after a minimum of 40 gallons were bailed and the ground- <br /> `= water levels had recovered to at least 90% of their static levels. <br /> Following completion of all tasks, the Problem Assessment Report and Project Status Report of <br /> Ground-Water Monitoring were issued in one volume on August 8, 1995. <br /> GROUND-WATER MONITORING: OCTOBER 18, 1995 <br /> - Ground-Water Soundings <br /> '.J <br /> Monitoring wells MW-4, MW-5, MW-6, MW-7, and MW-8 were again sounded on October <br /> 18, 1995 utilizing a Keck'm interface probe; the W.W. Irwin, Inc. staff geologist intercepted the <br /> piezometric surface at an average depth of 15.63 feet below the tops of the well casings (see <br /> .1 Table 2). The average depth to the water table has risen 0.01-foot since July 7, 1995 when the <br /> average depth to the water table was 15.73 feet utilizing depths sounded in all five monitoring <br /> wells. Table 3 lists clock times of soundings for monitoring activities performed since <br /> September 19, 1994, with Stockton-corrected times and heights of highest&lowest tides. Using <br /> the three-point method, the calculated local ground-water flow direction on October 18, 1995 <br /> was approximately S87°E along a gradient of 0.014 foot/foot. Between July 7 and October 18, <br /> the flow direction has shifted 16' to the south, but has remained easterly (see the Ground-Water <br /> Gradient Map, Figure 3). <br /> I � <br /> -- i W.W.IrKh% Inc. <br /> j Project No. 33016.06 <br /> October 1995 7 <br /> 1 <br />