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1 <br /> 1 o�iscaeuurts <br /> 3.0 MONITORING RESULTS SUMMARY <br /> 1 3.1 GROUNDWATER PHYSICAL CHARACTERISTICS AND FOIE TI METRIC <br />' SURFACE ELEVATIONS <br /> Table 3-1 presents a summary of groundwater parameters, depths and elevations. Since 18 May <br />' 1999 (the last available groundwater elevation data) groundwater elevations have decreased by a <br /> maximum of 0 50 feet in MW-5 and increased by 0 46 feet in MW-4. The groundwater elevation <br />' changes this quarter result in a flattening of the trough in the groundwater surface. <br />' Table 3-1 <br /> Groundwater Parameter, Depth, and Elevation Data <br />' Top of 23 August <br /> Conduc- Casing Depth to 1999 Water <br />' Temp tivity Elevation (ft Water Elevation(ft <br /> Well °F H MHOS MSL ft MSL <br /> MW-2 NM NM NM NM 26 93 NM <br /> MW-2A 746 7 1 1,510 1191 2708 -1517 <br />' MW-3A NM NM NM 1123 2654 -1531 <br /> MW-4 NM NM NM 1346 2802 -1462 <br />' MW-5 NM NM NM 1283 2587 -1304 <br /> MW-6 NM NM NM 1317 2692 -1373 <br /> MW-7 NM NM NM 1314 2872 -1528 <br />' MW-8 NM NM NM 1376 29 15 -1539 <br /> MW-9 740 76 1,760 1226 27 45 -1520 <br /> INote NM = Not Measured <br /> A potentiometnc contour map developed from the water level data is presented on Figure 3-1. As <br /> found during previous sampling rounds, groundwater flaw is generally toward the north-northeast <br /> within a trough The average horizontal groundwater gradient down the center of the trough was <br /> 0 002 ft/ft <br /> IL 1PR0JEcrszANJ0QUiSAU{SA 99 SEP 4 Sepumbar 1999 <br />