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Table 9 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station #6020 <br /> 1711 E Yosemite, Manteca CA <br /> Top of Casing Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (pg1L) (pg1L) (pg1L) (pg1L) (pg1L) (pg1L) (mglL) Comments <br /> MW-7 11/27/2002 P 4306 2131 2175 <50 -- 78 45 1 8 0 55* 32 <br /> 02/17/2003 NP 4306 2143 21 63 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 26 <br /> 04/28/2003 P 4306 2161 2145 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 33 <br /> 07/28/2003 P 4306 2251 2055 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 37 <br /> 11/26/2003 P 4306 2260 2046 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 22 <br /> 02/1612004 P 4306 2295 2011 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 27 <br /> MW-8 2/15/2001 -- 4341 21142 2291 <50 -- <0 5 <05 <05 <0 5 <2 5 -- <br /> 6/1/2001 -- 4341 2076 2265 <50 — <0 5 <0 5 <0 5 <0 5 <2 5 — <br /> 9/11/2001 — 4341 2195 2146 <50 -- <0 5 <0 5 <0 5 <0 5 <25 1 9 <br /> 12/20/2001 4341 2183 2158 <50 -- <0 5 <05 <05 <0 5 <2 512 6* 19 <br /> 3/20/2002 — 4341 2059 2282 <50 — <0 5 <05 <0 5 1 <0 5 <2 51<0 5* 1 9 <br /> 6/20/2002 P 4341 2157 21 84 <50 -- <0 5 <0 5 <0 5 <0 5 <0 5* 28 <br /> 9/24/2002 P 4341 2218 21 23 <50 — <0 5 <0 5 <0 5 <0 5 <0 50* — <br /> 11/27/2002 P 4341 2156 2185 <50 — <05 <0 5 <0 5 <0 5 <0 5* 36 <br /> 02/1712003 NP 4341 2164 2177 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 24 <br /> 04/28/2003 P 4341 2181 2160 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 25 <br /> 07/28/2003 P 4341 2271 2070 <50 <0 50 <0 50 <0 50 <0 50 <0 50* 21 <br /> 11/2612003 P 4341 2282 2059 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 23 <br /> 02/1612004 P 4341 2314 2027 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 46 <br /> MW-9 2/15/2001 -- 4369 2080 2289 <50 -- <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 6/1/2001 4369 21 18 2251 <50 -- <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 9/11/2001 — 4369 2241 2128 <50 — <0 5 <0 5 <0 5 <0 5 <2 5 14 <br /> 12/20/2001 4369 2223 2146 <50 -- <0 5 <0 5 <0 5 <05 <2 51<2 0* 21 <br /> 3/20/2002 -- 4369 2098 2271 <50 -- <0 5 <0 5 <0 5 <0 5 <2 51<0 5* 21 <br /> 6/20/2002 P 4369 2192 21 77 <50 -- <0 5 <0 5 <0 5 <0 5 <0 50* 1 8 <br /> 9/24/2002 P 4369 2252 21 17 <50 -- <0 5 <0 5 <0 5 <0 5 <0 5* NA <br /> 11/2712002 P 4369 2190 2179 <50 — <0 5 <0 5 <05 <0 5 <0 5* 35 <br /> 02/17/2003 NP 4369 2204 21 65 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 31 <br /> 04/28/2003 P 4369 2219 2150 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 37 <br /> 07/28/2003 P 4369 23 12 2057 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 36 <br /> 11/26/2003 P 4369 2316 2053 <50 <0 50 <0 50 <0 50 <0 50 <0 50* 30 <br /> 02/16/2004 P 4369 2353 2016 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 25 <br /> 0311112004 P 4369 2300 2069 -- -- -- -_ -- -- -- <br /> -- I <br /> Report Date Apn116,2004 Page 2 of 4 <br />