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i i • <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 ME DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) Uig/L) (pg1L) (1rg1L) (l g/L) (erg/L) (,vg/L) (mglL) Comments <br /> MW-5 2/15/2001 -- 4361 2088 2273 <50 — <0 5 <0 5 <0 5 <0 5 <25 — <br /> 6/1/2001 — 4361 21 22 2-239 <50 -- <0 5 <0 5 <0 5 <0 5 <25 — <br /> 9/11/2001 — 4361 2248 21 13 <50 — <0 5 <0 5 <05 <0 5 <25 25 <br /> 12/20/2001 — 4361 2225 2136 <50 — <05 <0 5 <05 <0 5 <2 5/<2 0* 21 <br /> 3/20/2002 — 4361 2102 2259 <50 — <05 <05 <0 5 <0 5 <2 5/<0 5* 3 5 <br /> 6/20/2002 P 4361 2195 2166 <50 -- <05 <05 <0 5 <0 5 <0 50* 4 <br /> 9/24/2002 P 4361 2-257 2104 <50 — <0 5 <05 <0 5 <0 5 <0 50* NA <br /> 11/27/2002 P 4361 2191 2170 <50 -- <0 5 <0 5 <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* 4 6 <br /> 11/26/2003 P 4361 2319 2042 <50 — <050 <0 50 <0 50 <0 50 <0 50* 48 <br /> 02/16/2004 P 4361 2351 2010 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 4 5 <br /> 05/26/2004 P 4361 2358 2003 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 51 <br /> 08/05/2004 P 4361 2478 1883 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 4 5 <br /> 111/12/20041 P 1 4361 1 2331 1 2030 1 <50 I — I <0 50 f <0 50 I <0 50 <0 50 1 <0 50* 529 <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 4,200 -- <br /> 9/11/2001 — 4365 2251 2114 <5,000 -- <50 <50 <50 <50 3,800 08 <br /> 12/2012001 -- 4365 2232 21 33 <50 — <05 <0 5 <05 <0 5 7412,400* 13 <br /> 3/20/2002 -- 4365 2106 2259 <50 — <05 <05 <0 5 <0 5 2701270* 12 <br /> 6/20/2002 P 4365 2200 2165 150 — <0 5 <05 <0 5 <0 5 260* 15 <br /> 9/24/2002 P 4365 2262 2103 <50 — <05 <05 <0 5 <0 5 770* NA <br /> 11/27/2002 P 4365 2195 2170 <5,000 -- <50 <50 <50 <50 2,200* 12 <br /> 02/17/2003 P 4365 2211 2154 <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 <25 <2 5 <2 5 200* 20 <br /> 11/26/2003 P 4365 2324 2041 99 R — <050 <0 50 <0 50 <0 50 170* 1 2 <br /> 02/16/2004 P 4365 2353 2012 <50 -- <2 5 <2 5 <25 <2 5 59* 16 <br /> 05/26/2004 P 4365 2362 2003 <50 — <10 <1 0 <1 0 <1 0 74* 20 <br /> 08/05/2004 P 4365 24 81 1884 <50 -- <0 50 <0 50 <0 50 <0 50 32* 17 <br /> 11/12!2004 P 4365 1 2335 1 2030 <50 — <0 50 <0 50 <0 50 <0 50 6 4*J 3 7 <br /> Report Date December 20,2004 Page 1 of 5 <br />