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3.0 MONITORING RESULTS SUMMARY <br /> 3.1 Groundwater Physical Characteristics and Potentiometric Surface Elevations <br /> ' Table 3-1 presents a summary of groundwater parameters,depths and elevations Compared to pnor <br /> groundwater elevations, water levels have decreased by an average of 0 86 feet since June 2005 <br /> ' Table 3-1 <br /> Groundwater Parameter,Depth, and Elevation Data <br /> San Joaquin County Human Services Agency <br /> September 2005 <br /> Top of <br /> ' Average Average Casing Depth to September 2005 <br /> Temp. Average Conductivity Elevation Water Water Elevation <br /> well 1,C H mS/cm) (feet MSL feet feet MSL <br /> ' MW-2 240 666 1 63 NM 3058 NM <br /> ' MW-2A 229 671 160 1191 3067 -1876 <br /> MW-3A NM NM NM 1123 3003 -1880 <br /> MW-4 NM NM NM 1346 31 43 -1797 <br /> MW-5 NM NM NM 1283 2954 -1671 <br /> MW-6 NM NM NM 13 17 3055 -1738 <br /> MW-7 NM NM NM 13 14 3234 -1920 <br /> NM NM NM 1376 3287 -19 11 <br /> MW-9 212 646 234 1226 31 02 -1876 <br />' °C=degrees Celsius MSL=nean sea level <br /> mS/cm=nucrosiemens per centimeter NM=not measured <br /> A potentiometnc contour map developed from the water level data is presented in Figure 3-1 As <br /> in previous sampling rounds, the water table is characterized by a northeast-southwest trending <br /> trough Groundwater flow is toward the center of the trough at a gradient of approximately 0 009 <br />' feet/foot <br /> 3.2 Analytical Results <br />' A summary of the analytical data for the September 29, 2005 groundwater sampling event is <br /> presented in Table 3-2 Historical groundwater analytical results are presented in Appendix A,Table <br /> A-1 The analytical reports and chain of custody forms are presented in Appendix C <br /> I <br /> i <br /> 6 <br />