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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 P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet rnsl) (feet bgs) (feet msl) {pg/L) (ErglL) (Erg/L) (/rglL) (pg1l.) (pglL) (/►gIL) (mg/L) Comments <br /> MW 11 02/16/2004 P 4418 2402 2016 <50 <0 50 <0 50 <0 50 <0 50 <0 50' 30 <br /> 05/26/2004 P 4418 24 08 2010 <50 <0 50 <0 50 <050 <0 50 <0 50' 25 <br /> 08/05/2004 P 4418 2532 1886 <50 <0 50 <0 50 <0 50 <0 50 <0 50' 27 <br /> 11/12/2004 P 4418 2386 2032 <50 <0 50 <050 <br /> <050 <0 50 <0 50' 5 5 <br /> 02/11/2005 P 4418 2302 21 16 <50 <br /> -- <050 <0 50 <0 50 <0 50 c0 50` 37 <br /> 05/31/2005 P 4418 2254 2164 <50 <0 50 —<050 —<050 <0 50 <0 50' 53 <br /> 08/18/2005 P 4418 2313 210 <50c0 50 c0 50 <050 c0 50 <br /> <0 50' 5 6 <br /> 11008/20051 P 4418 2155 2263 <50 <050 <0 50 <0 50 <0 50 <0 50' 51 <br /> 01/25/2006 P 4418 2027 2391 <50 — <0 50 <0 50 <0 50 <0 50 <0 50' 52 <br /> MW-12 07/28/2003 P 4383 2335 2048 <50 <050 <0 50 <050 <0 50 <0 50' 30 <br /> 11/26/2003 P 4383 2339 2044 <50 <0 50 <0 50 —<050 —<050 <0 50' 25 <br /> 02/16/2004 P 4383 2364 2019 <50 <0 50 <0 50 —<050 —<050 <0 50' 20 <br /> 05/26/2004 P 4383 2372 2011 <50 <050 <0 50 <0 50 <0 50 <0 50' i 25 <br /> Q8/05/2004 P 4383 2496 18 87 <50 <0 50 <0 50 <0 50 <0 50 <0 50' 23 <br /> 11/12/2004 P 4383 2349 20 34 <50 —<050 —<0 -- <br /> 50 <050 <0 50 <0 50' 318 <br /> 02/11/2005 P 4383 2265 21 18 <50 <0 50 <0 50 <0 50 <0 50 <0 50' 40 <br /> 05/31/2005 P 43 833 2218 21 65 <50 <0 50 <0 50 <050 <0 50 <0 50' 37 <br /> 08/18/2005 P 4383 2275 21 08 <50 <050 <0 50 <050 <0 50 <0 50' 30 <br /> 12/08/2005 P 43 83 2119 22 64 <50 <0 50 J'0 50 <0 50 <0 50 <0 50' 3 1 <br /> 41/25/2006 P 43 83 19 91 23 92 <54 — <0 50 4 50 1,05 <4 50 <0 54` 60 <br /> MW-13D 07/28/2003 P 4351 2426 1925 <50 <050 <050 <050 <050 7 8' 31 <br /> 11/26/2003 P 4351 24 19 19 32 <50 050 083 <0 50 060 2 6" 1 5 <br /> 02116/2004 P 4351 2441 1910 <50 <0 50 052 <0 50 053 27' 22 <br /> 05/26/2004 P 4351 2466 1885 <50 <0 50 <0 50 <0 50 057 2 5' 1 3 <br /> 08/05/2004 P 4351 2568 17 83 <50 <0 50 <0 50 <050 050 0 89' 7 2 <br /> 1 1 11 2120 0 4 P 43 51 24 08 1943 <50 UJ <0 50 <0 50 <0 50 <0 50 0 77'J 388 <br /> 02/11/2005 P 4351 2319 2032 <50 <0 50 <050 <0 50 <0 50 053' 42 <br /> 05131/2005 P 4351 2279 2072 <50 c0 50 <0 50 <050 <0 50 0 81 'J 48 <br /> 08/18/2005 P 4351 2339 2012 <60 —<050 <0 50 <0 50 c0 50 1 1* 54 <br /> 12/08/2005 P 4351 21 43 2208 <50 <0 50 <050 <0 50 <0 50 0 63' 1 3 <br /> 01/25/2006 P 4351 2027 2324 <50 -- <0 50 <0 50 <0 50 <0 50 070- 2 5 <br /> QCTB 3/20/2002 - - <50 <0 5 c0 5 <0 5 <br /> 05 e2 5 <br /> Report Date February 15,2006 ��~ ��� � Page 5 of 7 <br />