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Ground-water monitoring was conducted for the first quarter of 1996 on January 16; the Project <br /> r " Status Report for that activity was issued on February 7, 1996. <br /> GROUND-WATER MONITORING: MARCH 18, 1996 <br /> Ground-Water Soundings <br /> Monitoring wells MW-4, MW-5, MW-6, MW-7, and MW-8 were again sounded on March 18, <br /> = 1996 utilizing a Keck T"' interface probe. The Irwin staff geologist intercepted the piezometric <br /> surface at an average depth of 13.18 feet below the tops of the well casings (see Table 2). The <br /> average depth to the water table has decreased 0.88-foot since January 16, when the average <br /> depth to the water table was 14.05 feet. Table 3 lists clock times of soundings for monitoring <br /> activities performed since September 19, 1994, with Stockton-corrected times and heights of <br /> highest & lowest tides. <br /> Using the three-point method, the calculated local ground-water flow direction on March 18, <br /> 1996 was approximately SSS°E along a gradient of 0.016 foot/foot. Between January 16 and <br /> March 18, the flow direction has shifted 15' to the east (and slightly south), but has remained <br /> j.: <br /> easterly (see the Ground-Water Gradient Map, Figure 3). <br /> �i <br /> r <br /> 1- <br /> _- <br /> W.W.Irvin, Inc. <br /> Project No. 33016.06 <br /> April 1996 7 <br /> :J <br />