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µuuaeas oes+eu¢A5 P., <br /> . 3.2 ANALYTICAL RESULTS <br /> I A summaryof the analytical data for the March 199$ groundwater n 1n <br /> y g e sampling are presented <br /> Table 3-2. Htstoncal groundwater analytical results are presented in Table A-1 1n Appendix A <br /> The analytical reports and Chain of Custody forms are presented in Appendix C <br /> Petroleum hydrocarbons were only detected in samples collected from MW-2A. No petroleum <br /> hydrocarbons were detected in MW-9. The MW-2A sample had increased concentrations of <br /> dissolved petroleum hydrocarbons from the December 1997 sampling event; benzene (1,300 <br /> ,ug/L), toluene (1,520,ug/L), ethylbenzene (1,000µg/L), total xylene (1,800µg/L), and TPH-G <br /> (12,000 icg/L) <br /> Table 3-2 <br /> IOrganic Analytical Results <br /> San Joaquin County Human Services Agency <br /> 17 March 1998 <br /> Groundwater Ethyl- <br /> ie <br /> Elevation Benzene Toluene benzene Total Xylene TPH-G <br /> Well (feet) (µgIL) (.Ug/L) (Ug1L) WIL) (NSR-) <br /> MW-2A -1854 1,300 520 1,000 1,800 12,000 <br /> MW-9 -1854 ND (0 5) ND (0 5) ND (0 5) ND (50) ND (50) <br /> Notes ND (0 5) = Analyte not detected, detection lint indicated in parentheses <br /> L TR0JECr=AN70Q1HSAIHSA 98 APR 7 May IM <br />