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1 <br /> 3.0 MONITORING RESULTS SUMMARY <br /> 3.1 GROUNDWATER PHYSICAL CHARACTERISTICS AND POTENTIOMETRIC <br /> SURFACE ELEVATIONS <br /> Table 3-1 presents a summary of groundwater parameters, depths and elevations. Since 18 <br /> September 1997 (the last available groundwater elevation data) groundwater elevations have <br /> decreased by an average of 0 13 feet. <br />' Table 3-1 <br /> Groundwater Parameter, Depth, and Elevation Data <br /> Top of 15 Dee <br /> Conduc- Casing Depth to 1997 Water <br /> Temp tivity Elevation (ft Water Elevation (ft <br /> Well (C) pH (uMHOS) MSL) (ft) MSL) <br /> MW-2 144 70 1250 NM 33 85 NM <br /> MW-2A 210 67 1380 1191 33 92 -2201 <br /> MW-3A 195 6 8 1680 1123 33 41 -22 18 <br /> MW-4 18 2 76 1100 1346 3468 -2122 <br /> MW-5 209 7 1 390 12 83 32 33 -1950 <br /> MW-6 209 6 8 1150 13 17 33 99 -2082 <br /> 1 MW-7 20 8 67 1220 13 14 3559 -2244 <br /> MW-8 197 7 1 900 1376 3593 -22 17 <br /> MW-9 20 5 6 7T 1490 1226 -[7437 -22 11 <br /> Note NM = Not Measured <br /> A potentiometnc contour map developed from the water level data is presented on Figure 3-1 <br />' As in previous sampling rounds groundwater flow is generally toward the north-northeast within <br /> a trough The horizontal groundwater gradient down the center of the trough was 0 001 ftlft <br />' On the sides of the trough the horizontal groundwater gradient was 0 01 ft/ft <br /> i <br /> 1 <br /> L TR0JELTSZANJ0QWSA\HSA_47 DEC 5 Jammy 19% <br />