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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- A n <br /> Well Date PI Elevation Water Elevation TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msi) (feet bgs) (feet msl) Uig/L) Uig/L) (pg/L) (pWL) (pg/L) (pg/L) (pglL) (mg/L) Comments <br /> MW 5 2/15/2001 4361 2088 2273 <50 <05 <0 5 <0 5 <0 5 <2 5 <br /> 6/1/2001 4361 21 22 2239 <50 <0 5 <0 5 <0 5 <05 <25 <br /> 9/11/2001 4361 2248 2113 <50 <0 5 <0 5 <05 <0 5 <2 5 25 <br /> 12/20/2001 4361 2225 2136 <50 <0 5 <0 5 <0 5 <0 5 <2 51<2 0' 21 <br /> 3/20/2002 4361 2102 2259 <50 <0 5 <0 5 c0 5 <05 <2 5/<0 5` 35 <br /> 6/20/2002 P 43 61 21 95 2166 <50 <05 <0 5 <0 5 <0 5 c0 50' 4 <br /> 9/24/2002 P 4361 2257 2104 <50 <0 5 <0 5 <0 5 <05 <0 50` NA <br /> 11/27/2002 P 4361 2191 2170 <50 <0 5 <05 <05 c0 5 <0 50' 56 <br /> 02/17/2003 NP 4361 2207 2154 <50 <0 50 <0 50 <0 50 <050 <0 50` 43 <br /> 04/28/2003 P 4361 2223 21 38 <50 <0 50 <0 50 <0 50 <0 50 <0 50" 53 <br /> 07/28/2003 P 4361 2314 2047 <50 c0 50 <050 <0 50 <0 50 <0 50` 46 <br /> 11/26/2003 P 4361 2319 2042 <50 <050 <050 <050 <0 50 <0 50` 48 <br /> 02/16/2004 P 43 61 23 51 20 10 <50 <050 <050 <050 <0 50 <0 50` 45 <br /> 05/26/2004 P 4361 2358 2003 <50 <0 50 <0 50 <050 <0 50 <0 50` 51 <br /> 08/05/2004 P 4361 2478 1883 <50 <0 50 <0 50 <0 50 <050 <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 <0 50 <050 <0 50 <0 50 <0 50' 33 <br /> 05/31/2005 P 4361 21 99 2162 <50 c0 50 <0 50 <0 50 <0 50 <0 50` 40 <br /> 08/18/2005 P 4361 2204 21 57 <50 c0 50 <0 50 -<050 <0 50 <0 50' 54 <br /> 12/08/2005 P 4361 2098 2263 <50 <br /> '050 <050 <0,50 -050 <0 50` 51 <br /> ,01/25/2006 P 43 61 1972 2389 <5o -- <0 50 <0 50 I <0 50 <0 50 <0 50' 46 <br /> MW-6 2/15/2001 4365 2092 22 73 <500 <5 <5 <5 <5 1,260 - <br /> 6/1/2001 4365 21 27 22 38 <500 - <5 <5 <5 <5 4,200 <br /> 9/11/2001 4365 2251 2114 <5,000 <50 <�5O E<50 <50 3,800 08 <br /> 12/20/2001 4365 2232 2133 <50 <05 c <0 5 74/2,400` 1 3 <br /> 3/20/2002 4365 21 06 2259 <50 <0 5 <0 <0 5 <0 5 2701270' 1 2 <br /> 6/20/2002 P 4365 2200 2165 150 <05 <0 5 c0 5 <0 5 260` 1 5 <br /> 9/24/2002 P 4365 2262 2103 <50 <05 <0 5 <0 5 <0 5 770` NA <br /> 11/27/2002 P 4365 2195 21 70 <5,000 <50 <50 <50 <50 2,200" 12 <br /> 02/17/2003 P 4365 2211 21 54 <5 000 <50 <50 <50 <50 340` 20 <br /> 04/28/2003 P 4365 2228 2137 100 <0 50 <0 50 <0 50 <0 50 230' 34 <br /> 07/28/2003 P 4365 2319 2046 88 R <2 5 <2 5 <25 <2 5 200' 20 <br /> 11/26/2003 P 43 65 23 24 20 41 99 R <0 50 <0 50 <0 50 <0 50 170' 1 2 <br /> Report Date February 15,2006 Page 1 of 7 <br />