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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station No 4493 <br /> 205 N Center Street, Stockton, CA <br /> I <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Humber Sampled NP (feet msl) (feet bgs) (feet msl) (pglL) (pg1L) (pglL) (pglL) (mg1L) (;jglL) (1191L) (mglL) Comments <br /> MW-9D 12/23/2003 P 1300 1868 -568 <50 -- <10 <1 0 <1 0 <1 0 <1 0* 4 8 <br /> 03/08/2004 P 1300 1765 -465 <50 -- <10 <1 0 <1 0 <1 0 <1 0* 43 <br /> 06/09/2004 P 1300 17 84 -484 <50 — <10 <1 0 <1 0 <1 0 <1 0* 16 Water Levels taken on <br /> slaloa <br /> MW-9M 6/12/2002 P 1298 1924 -624 770 -- 37 77 110 94 44* <br /> 9/16/2002 P 1298 1692 -392 50 — 27 <1 0 24 <1 0 56* -- <br /> 12/5/2002 P 1298 1825 -525 <50 — <0 5 <0 5 <0 5 <0 5 24' 21 <br /> 03/14/2003 P 1298 1854 -556 <50 -- <050 <0 50 <0 50 <050 0 63* 4 <br /> 06/09/2003 P 1298 1746 -448 <50 — <1 0 <1 0 <1 0 <1 0 1 1* 24 <br /> 09/25/2003 P 1298 1855 -557 <50 -- <1 0 <1 0 <1 0 <1 0 21* 1 <br /> 12/23/2003 P 1298 1863 -565 <50 <1 0 <1 0 <1 0 <1 0 2 0* 37 <br /> 03108!2004 P 1298 1754 -456 <50 -- <1 0 <1 0 <1 0 <1 0 2 8* 3 6 <br /> 0610912004 P 1298 1778 -480 <50 _ <1 0 <1 0 <1 0 <1 0 <1 0* 21 Water Levels taken on <br /> 618!04 <br /> MW-100 6/12/2002 NP 1064 1421 -357 87 -- 19 <0 5 <0 5 <0 5 31* -- <br /> 9/16/2002 NP 1064 1465 -401 <50 — <0 5 <0 5 <0 5 <0 5 1 6* - <br /> 12/5/2002 P 1064 1596 -532 <50 — <0 5 <0 5 1 1 <0 5 1* 23 <br /> 03114/2003 P 1064 1589 -525 <50 -- <0 50 <0 50 <0 50 <0 50 0 64* 1 <br /> 06/09/2003 P 1064 1535 -471 <50 — <1 0 <1 0 <1 0 <1 0 <1 0* 14 <br /> 09/25/2003 P 1064 1566 -502 <50 - <1 0 <1 0 <1 0 <1 0 <1 0* 14 <br /> 12/23/2003 P 1064 1633 -569 <50 -- <1 0 <1 0 <1 0 <1 0 <1 0* 29 <br /> 03/08/2004 P 10 64 1544 -480 <50 <1 0 <1 0 <1 0 <1 0 <1 0* 2 7 <br /> 06/09/2004 P 1054 1568 -504 <50 .. <1 0 <1 0 <1 0 <1 0 <1 0* 1 3 Water Levels taken on <br /> 618104 <br /> MW-10M 6/12/2002 P 1076 1493 -417 430 — 12 087 <0 50 12 5 8* -- <br /> 9/16/2002 P 1076 1481 -405 <50 -- <1 0 <1 0 <1 0 <1 0 2 6* — <br /> 12/5/2002 P 1076 1602 -526 <50 - <1 0 <1 0 <1 0 <1 0 <1 0* 1 5 <br /> 03114/2003 P 1076 1612 -536 <50 -- <050 <0 50 <0 50 <0 50 <0 50* 22 <br /> 06/09/2003 P 1076 1550 -474 <50 - <1 0 UJ <1 0 UJ <1 0 UJ <1 0 UJ <1 0* 66 <br /> 09/25/2003 P 10 76 1588 -512 <50 -- <1 0 <1 0 <1 0 <1 0 <1 0* 63 <br /> 12/23/2003 P 1076 1675 -599 <50 — <1 0 <1 0 <1 0 <1 0 <1 0* 61 <br /> j 03/0812004 P 1076 1559 -483 <50 — <1 0 <1 0 <1 0 <1 0 <1 0* 66 <br /> Report Date July 29, 2004 Page 6 of 8 <br />