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r <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6020 <br /> 1711 E Yosemite Avenue, Manteca, CA <br /> TOC Depth to Water Level Ethyl. Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pgll-) (pg/L) (pg1L) (pg/L) (p91L) (pg/L) (mg/L) Comment& <br /> MW-6 02111/2005 P 4365 2250 2115 <50 -- <0 50 <0 50 <0 50 <0 50 9 9* 31 <br /> MW-7 2/15/2001 — 4306 2025 2281 <50 — <0 5 <0 5 <0 5 <0 5 <2 5 — <br /> 6/1/2001 — 4306 2060 2246 <50 — <0 5 <0 5 <0 5 <0 5 <2 5 — <br /> 9/11/2001 — 4306 2186 2120 <50 — <0 5 <05 <0 5 <05 <25 19 <br /> 12/20/2001 — 4306 — — -- — — — — — -- — Well Inaccessible <br /> 3/20/2002 — 1 4306 2040 2266 <50 — <05 <06 <05 <05 <2 5/<0 5* 18 <br /> 6/20/2002 P 4306 2134 2172 <50 — <05 <0 5 1 <05 <0 5 <0 5* 2 8 <br /> 9/24/2002 P 4306 2194 2112 <50 -- <05 <0 5 <0 5 <0 5 <0 5* NA <br /> 11/27/2002 P 4306 2131 2175 <50 — 7 8 45 1 8 0 55* 32 <br /> 02/17/2003 NP 4306 2143 2163 <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 /> 02116/2004 P 4306 2295 2011 <50 — <0 50 <0 50 <0 50 <0 50 <0 50' 27 <br /> 05/26/2004 P 4306 2298 2008 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 24 <br /> 08/05/2004 P 4306 2415 1891 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 31 <br /> 11/12/2004 P 4306 2266 2040 <50 — <0 50 <050 <0 50 <0 50 <0 50* 2 09 <br /> 02111/2005 P 1 4306 2185 2121 <50 <0 50 <0 50 <0 50 <050 <0 50* 1 41 <br /> MW-8 2/15/2001 — 4341 2042 2299 <50 - <0 5 <05 <0 5 <0 5 <2 5 — <br /> 6/1/2001 4341 2076 2265 <50 -- <0 5 <0 5 <0 5 <05 <25 — <br /> 9/11/2001 — 4341 2195 2146 <50 — <0 5 <0 5 <0 5 <05 <25 19 <br /> 12/20/2001 — 4341 21 83 2156 <50 — <0 5 <0 5 <0 5 <0 5 <2 512 6* 19 <br /> 3/20/2002 — 4341 2059 2282 <50 — <0 5 <0 5 <0 5 <05 <2 5/<0 5* 19 <br /> 6/20/2002 P 4341 21 57 2184 <50 - <0 5 <05 <0 5 <05 <0 5* 28 <br /> 9/24/2002 P 4341 2218 2123 <50 — <05 <05 <05 <0 5 <0 50* — <br /> 11/27/2002 P 4341 2156 2185 <50 -- <05 <05 <0 5 <05 <0 5* 36 <br /> 02/17/2003 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 — <050 <0 50 <0 50 <0 50 <0 50* 25 <br /> 07/28/2003 P 4341 2271 2070 <50 — <050 <0 50 <0 50 <0 50 <0 50* 21 <br /> 11/26/2003 P 4341 2282 2059 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 23 <br /> 02/16/2004 P 4341 2314 2027 <50 — <050 <0 50 <0 50 <0 50 <0 50* 46 <br /> 05/26/2004 P 4341 2324. 1 2017 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 21 <br /> Report Date March 3,2005 Page 2 of 5 <br />