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Table 1 <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 msi) (feet bgs) (feet msl) (pg1L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) WIL) (mg/L) Comments <br /> MW-5 2/15/2001 4361 2088 2273 <50 – <0 5 <0 5 <05 <05 <2 5 6/11/2001 -- 4361 2122 2239 <50 -- <0 5 <0 5 <0 5 <0 5 <25 – <br /> 9/11/2001 - 4361 2248 21 13 <50 – <0 5 <0 5 <0 5 <0 5 <25 25 <br /> 12/20/2001 -- 4361 2225 2136 <50 -- <0 5 <0 5 <0 5 <0 5 <2 51<2 0* 21 <br /> 3/200/2002 - 4361 2102 2259 <50 – <0 5 <0 5 <0 5 <0 5 <2 5/<0 5* 35 <br /> 6/20/2002 P 4361 2195 2166 <50 -- <0 5 <0 5 <0 5 <0 5 <0 50* 4 <br /> 9/24/2002 P 4361 2257 2104 <50 – <0 5 <05 <0 5 <0 5 <0 50* NA <br /> 11/27/2002 P 4361 2191 2170 <50 <0 5 <05 <0 5 <0 5 <0 50* 56 <br /> 02/17/2003 NP 4361 2207 2154 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 43 <br /> 04/28/2003 P 4361 2223 2138 <50 – <0 50 <0 50 <0 50 <0 50 <0 50* 53 <br /> 07/28/2003 P 4361 2314 2047 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 46 <br /> 11/26/2003 P 4361 2319 2042 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 48 <br /> 02/1612004 P 4361 2351 2010 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 45 <br /> MW-6 2/15/2001 -- 4365 2092 2273 <500 – <5 <5 <5 <5 1 260 – <br /> 6/1/2001 4365 2127 2238 <500 -- <5 <5 <5 <5 4200 – <br /> 9/11/2001 -- 4365 2251 21 14 <5 000 – <50 <50 <50 <50 3 800 08 <br /> 12/20/2001 – 4365 2232 2133 <50 – <0 5 <0 5 <0 5 <0 5 7412,400* 1 3 <br /> 3/20/2002 4365 2106 2259 <50 – <0 5 <0 5 <05 <0 5 2701270* 12 <br /> 6/20/2002 P 4365 2200 2165 150 -- <0 5 <0 5 <05 <0 5 260* Is <br /> 9/24/2002 P 4365 2262 21 03 <50 – <0 5 <0 5 <0 5 <0 5 770* NA <br /> 19/27/2002 P 4365 2195 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 <0 50 <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 /> 02/1612004 P 43 65 2353 2012 <50 - <2 5 <2 5 <2 5 <2 5 59* 1 6 <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 21 86 21 20 <50 - <0 5 <0 5 <0 5 <0 5 <2 5 19 <br /> 12/20/2001 - 4306 – - -- -- - -- -- Well Inaccessible <br /> 3/20/2002 - 4306 2040 2266 <50 - <0 5 <0 5 <0 5 <0 5 <2 51<0 5* 18 <br /> 6/20/2002 P 4306 21 34 21 72 <50 – <0 5 <0 5 <0 5 <05 <0 5* 28 <br /> 9/24/2002 P 43 O6 21 94 21 12 <50 – <0 5 <0 5 <0 5 <0 5 <0 5* NA <br /> Report Date April 18,2004 � __ � T---�v — Page 1 of 4 <br />