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4.0 FINDINGS <br /> 4.1 Relative Groundwater Elevation and Gradient <br /> The relative elevation of groundwater in each well was calculated by subtracting the depth <br /> to water from the surveyed casing elevation (Table 1) All wells were surveyed relative to <br /> MW-3,which was assigned an elevation of 100 feet. The groundwater elevation ranges from <br /> 26.45 feet in MW-6 to 27 23 feet in MW-4. Groundwater has dropped an average of 0.16 <br /> feet since the February 1994 monitoring. A greater drop in groundwater was observed in <br /> MW-5 (0 30 feet) This well continues to show a significantly lower groundwater elevation <br /> The reason for this anomaly is not clear <br /> TABLE I <br /> RELATIVE GROUNDWATER ELEVATIONS <br /> Lockeford Beacon <br /> Depth to Groundwater Relative Groundwater <br /> Relative Elevation <br /> Well No Casing 1126/94 2/16/94 514/94 1126/94 2/16/94 5/4/94 <br /> Elevation <br /> MW-1 9962 7258 72 52 7268 2704 2710 2710 <br /> MW-2 9926 7252 7245 7263 2674 2681 2663 <br /> MW-3 10000 7300 7292 7308 2700 2708 2692 <br /> MW-4 9884 7168 7161 7175 2716 2723 2723 <br /> MW-S 9871 7237 7308 7338 2634 1 2563 2533 <br /> MW-6 9876 7278 7213 7231 2598 2663 2645 <br /> •All measurements m feet <br /> Figure 3 is a groundwater contour map drawn ignoring the data from MW-5 The gradient <br /> averages approximately 0 0075 ft/ft directed southwest This gradient is steeper than the <br /> February 1994 gradient of 0 003, but more shallow than the previous measurement of 0 05 <br /> AM in November 1992 The gradient map shows contours similar to those of the February <br /> 1994 gradient map. <br /> 0—Wr-1A du S.N I.c 6 <br /> t.�m,d gym.QS <br />