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Table 3-1 <br /> Groundwater Parameter, Depth, and Elevation Data <br />' San Joaquin Human Services Agency <br /> October 2003 <br /> Top of Depth <br />' Casing to October 2003 <br /> Temp Conductivity Elevation(ft Water Water Elevation (ft <br /> Well (°C) pH (AMHOS) MSL) (ft) MSL) <br /> MW-2 245 676 0 951 NM 3100 NM <br />' MW-2A 242 682 1 15 1191 31 10 -1919 <br /> MW-3A NM NM NM 1123 3049 -1926 <br /> MW-4 NM NM NM 1346 3196 -1850 <br /> MW-5 NM NM NM 1283 3003 -1720 <br /> MW-6 NM NM NM 13 17 3105 -1788 <br /> MW-7 NM NM NM 1314 3281 -1967 <br /> MW-8 NM NM NM 1376 3339 -1963 <br /> LMW-9 26 9 664 243 1226 3155 -1929 <br /> Note NM = Not Measured <br />' NW=Not Working (temperature sensor was inoperable) <br /> A potentiometnc contour map developed from the water level data is presented as Figure 3-1 As in previous <br />' sampling rounds,groundwater flow is generally toward the north-northeast in a trough-shaped pattern The <br /> groundwater gradient down the center of the trough is 0 0019 ft/ft,as measured between wells MW-2A and <br /> MW-7 <br /> 3.2 ANALYTICAL RESULTS <br /> A summary of the analytical data for the June 2003 groundwater sampling is presented in Table 3-2 <br />' Historical groundwater analytical results are presented in Table A-1 in Appendix A The analytical reports <br /> and Chain of Custody (CAC) forms are presented in Appendix C <br /> Petroleum hydrocarbons were detected in samples collected from source wells MW-2 and MW-2A Low <br /> levels of benzene,ethylbenzene,and total xylene were detected in MW-2 and MW-2A Toluene was slightly <br /> 1\PRDIECTStSAN10QViSAIIQ0!PIT WPD 4 <br />