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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 msi) (feet bgs) (feet msi) (f g/L) WL) (pg/L) (Erg/L) (P9/L) 04L) (og/L) (mg/L) Comments <br /> MW-5 2/15/2001 4361 2088 2273 <50 - <0 5 <0 5 <0 5 <05 <2 5 <br /> 6/1/2001 4361 21 22 2239 <50 <0 5 <05 <0 5 <0 5 <2 5 -- <br /> 9/11/2001 4361 2248 21 13 <50 <05 <0 5 <0 5 <0 5 <25 25 <br /> 12/20/2001 4361 2225 21 36 <50 - <0 5 <0 5 <0 5 <0 5 <2 5/<2 0* 21 <br /> 3/20/2002 4361 2102 2259 <50 <0 5 <0 5 <0 5 <0 5 <2 5/<0 5* 35 <br /> 6/20/2002 P 4361 21 95 2166 <50 <0 5 <0 5 <0 5 <0 5 <0 50* 4 <br /> 9/24/2002 P 4361 2257 21 04 <50 <0 5 <0 5 <0 5 <0 5 <0 50* NA <br /> 11/27/2002 P 4361 21 91 21 70 <50 <05 <0 5 <0 5 <0 5 <0 50* 56 <br /> 02/17/2003 NP 4361 2207 21 54 <50 <0 50 <0 5Q <0 50 <050 <0 50* 43 <br /> 04/28/2003 P 4361 2223 21 38 <50 <0 50 <050 <0 50 <050 <0 50* 53 <br /> 07/28/2003 P 4361 2314 2047 <50 <050 <0 50 <0 50 <0 50 <0 50* 46 <br /> 11/26/2003 P 4361 2319 2042 <50 <0 50 <0 50 <050 <0 50 <0 50* 48 <br /> 02/16/2004 P 4361 2351 2010 <50 <0 50 <0 50 <050 <0 50 <0 50* 45 <br /> 05/26/2004 P 4361 2358 2003 <50 <0 50 <050 <0 50 <0 50 <0 50* 51 <br /> 08/05/2004 P 4361 2478 1883 <50 <0 50 <050 <0 50 <0 50 <0 50* 45 <br /> 11/12/2004 P 4361 2331 2030 <50 <0 50 <0 50 <0 50 <050 <0 50* 529 <br /> 02/11/2005 P 4361 2248 2113 <50 <050 <0 50 <050 <050 <0 50* 33 <br /> 05/31/2005 P 4361 21 99 2162 <50 <0 50 <0 50 <050 <0 50 <0 50* 40 <br /> 08/18/2005 P 4361 2204 2157 <50 - <0 50 <0 50 <050 <0 50 <0 50* 54 <br /> 12/08/2005 P 1 4361 1 2098 1 2263 1 <50 — <0 50 <0 50 1 <050 1 <0 50 1 <0 50* 51 <br /> MW-6 2/15/2001 4365 2092 2273 <500 <5 <5 <5 <5 1,260 - <br /> 6/1/2001 4365 21 27 2238 <500 <5 <5 <5 <5 4,200 -- <br /> 9/11/2001 4366 2251 2114 <5,000 <50 <50 <50 <50 3,800 0 8 <br /> 12/20/2001 4365 2232 2133 <50 <0 5 <0 5 <05 <05 7412,400* 13 <br /> 3/20/2002 4365 2106 2259 <50 <0 5 <05 <0 5 <05 2701270* 1 2 <br /> 6/20/2002 P 4365 2200 21 65 15Q <05 <0 5 <0 5 <0 5 260* 1 5 <br /> 9/24/2002 P 4365 2262 21 03 <50 <0 5 <0 5 <0 5 <0 5 770* NA <br /> 11/27/2002 P 4365 21 95 2170 <5,000 <50 <50 <50 <50 2,200" 1 2 <br /> 02/17/2003 P 4365 2211 2154 <5,000 <50 <50 <50 <50 340* 20 <br /> 04/28/2003 P 4365 2228 21 37 100 <0 50 <0 50 <050 <0 50 230* 34 <br /> 07/28/2003 P 4365 2319 2046 88 R <2 5 <2 5 <2 5 <2 5 200" 20 <br /> 11/26/2003 P 4365 2324 2041 99 R <0 50 <0 50 <0 50 <0 50 170* 1 2 <br /> 02/16/2004 P 4365 1 2353 1 2012 1 <50 1 <2 5 <2 5 <2 5 1 <2 5 59* 1 6 <br /> Report Date January5,2006 Page 1 of 6 <br />