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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Farmer ARCO Service Station No 4493 <br /> 205 N Center Street, Stockton, 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 msi) (feet bgs) (feet msl) (pg/L) {Erg/L) (pg1L) (pg1L) (pg/L) (p9/L) (900 (mg1L) Comments <br /> MW-7 06/09/2003 P 1061 14 82 -421 410 -- <10 UJ <10 UJ <10 UJ <10 UJ 21 *J 12 <br /> 09/25/2003 P 1061 1513 -452 65 -- <1 0 <1 0 <1 0 <1 0 19* 1 1 <br /> 12/23/2003 P 1061 1605 -544 <50 — <1 0 <1 0 <10 <1 0 54* 17 <br /> 03/08/2004 P 1061 1495 -434 <50 - <1 0 <1 0 <1 0 <1 0 5 9* 1 3 <br /> 06/09/2004 P 10 48 14 97 -4 49 <50 -- <1 0 <1 0 <1 0 <1 0 2 1" 0 9 Water Levels taken an <br /> 618104 <br /> MW-8D 6/12/2002 P 1277 1734 -457 2,000 — 70 35 370 92 46* -- <br /> 9/16/2002 P 1277 1791 -514 1,100 -- 32 11 230 35 71* — <br /> 12/5/2002 P 1277 1895 -618 900 — 16 <05 32 <5 0 49* 2 7 <br /> 03/14/2003 P 1277 1882 -605 470 J -- 20 <2 5 <2 5 <2 5 22*J 1 3 <br /> 06/09/2003 P 1277 1845 -568 120 -- 2 5 <1 0 <1 0 <1 0 13* 21 <br /> 09/25/2003 P 1277 1922 -645 75 — 1 9 <1 0 <1 0 <1 0 11* 16 <br /> 12/24/2003 P 1277 1960 -683 200 67 1 5 15 21 20* 51 <br /> 03/08/2004 P 1277 1846 -569 380 -- <50 <50 <50 <50 25* 2 <br /> 0610912004 P 1277 18 44 -517 <10-- <10 <10 <10 <10 17* 1 8 Water Levels taken on <br /> 618104 <br /> MW-8M 6/12/2002 NP 1276 1600 -324 4,700 -- 69 90 650 490 7* — <br /> 9/16/2002 NP 12 76 17 82 -5 06 3 100 -- 25 89 700 230 20* -- <br /> 12/5/2002 P 1276 1866 -590 <50 -- <0 5 0 5 6 3 1 4 <0 5* 28 <br /> 0311412003 P 1276 1858 -582 <50 — <0 50 <050 <0 50 <0 50 <0 50* 37 <br /> 06/09/2003 P 1276 18 27 -551 <50 — 17 J <1 0 UJ <1 0 UJ <1 0 UJ 37*J 5 7 <br /> 09/25/2003 P 1276 1905 -629 640 — 46 4 0 21 42 17* 21 <br /> 12124/2003 P 12-76 1939 -663 1,600 — 62 71 70 25 27* 21 <br /> 03/08/2004 P 1276 1826 .550 570 -- 40 <10 <1 0 <1 0 21* 21 <br /> 06/0912004 P 1276 1804 .528 1,300 -- <50 <50 <50 <50 21* 1 3 Water Levels taken an <br /> 618104 <br /> MW-9D 6/12/2002 P 1300 1643 -345 460 -- 27 46 69 74 22* -- <br /> 9/16/2002 P 1300 1705 -407 140 57 <1 0 <1 0 <1 0 50* — <br /> 12/5/2002 P 1300 1826 -528 86 -- 24 <10 <1 0 <1 0 15* 2 <br /> 03/14/2003 P 13 00 18 28 -5 28 <50 — <0 50 <0 50 <0 50 <0 50 <0 50* 4 4 <br /> 06/09/2003 P 1300 1763 -463 <50 -- <1 0 <1 0 <1 0 1 <1 0 <1 0* 4 5 <br /> 09/25/2003 P 13 00 1$32 -5.32 <50 — <1 0 <1 0 <1 0 <1 0 <1 0* 1 8 <br /> Report Date July 29,2004 Page 5 of 8 <br />