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GROUND-WATER MONITORING <br /> Ground-Water Soundings <br /> Monitoring wells MW-4, MW-5, and MW-6 were again sounded on August 24, September 19, <br /> .! October 25, November 28, and December 15, 1994, and January 10, 1995 (per monthly <br /> sounding/tidal influence requirements of the SJCPHS-EHD in a letter to Mr. Dwight Davis of <br /> the Pegasus Group received on August 4, 1994). <br /> Utilizing a Keck® interface probe, the W.W. Irvin, Inc. staff geologist intercepted the <br /> piezometric surface in each well at depths averaging 13.05 feet on August 24, 14.98 feet on <br /> f <br /> September 19, 14.15 feet on October 25, 14.20 feet on November 28, 13.88 feet on December <br /> p <br /> 15, and 12.23 feet on January 10 (see Table 1). The average depth to water underlying the area <br /> of interest during the period from August 24, 1994 to January 10, 1995 was 13.75 feet. Table <br /> r=- 2 lists clock times of soundings on September 19 and October 25, and times and heights of <br /> highest & lowest tides. <br /> F- Using the three-point method, the most recently calculated local ground-water flow direction was <br /> approximately S67°E along a gradient of 0.023 foot/foot on January 10, 1995. Since August <br /> 24, the flow direction has shifted 19° to the south. All flow directions are shown on six <br /> respective Ground-Water Gradient Maps, Figures 3A, 3B, 3C, 3D, 3E, and 3F. Each map <br /> represents a monthly sounding from August-December 1994 and January 1995. <br /> i <br /> W.W.Invrn, Inc. <br /> Pioject No. 33016.04 <br /> January 1995 �r <br /> I <br />