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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) U41-) (pg/L) (pg/L) (P9/L) (Pg/L) WWL) (Pg/L) (mg/L) Comments <br /> MW 5 4/16/1997 2545 390 2155 - <br /> 10/15/1997 2545 508 2037 -- <br /> 3/17/1998 2,545 470 2075 _ <br /> 1/6/1999 2545 491 2054 <br /> 1/19/2000 2545 465 2080 <br /> 4/12/2000 2545 560 1985 <br /> 7/22/2000 2545 499 2046 <br /> 10/26/2000 2545 457 2088 <br /> 1/17/2001 2545 515 2030 <br /> 4/12/2001 2545 483 2062 _ <br /> 5/23/2001 2545 485 2060 120 0 653 ND<0 5 ND<O 5 ND<1 5 619 <br /> 7/31/2001 2545 512 2033 340 121 ND<O 5 0 527 ND<1 5 463 <br /> 10/30/2001 2545 497 2048 390 424 ND<O 5 215 ND<1 5 509 <br /> 1/29/2002 2545 446 2099 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 0 493 -- <br /> 4/30/2002 2545 475 2070 100 ND<O 5 ND<O 5 ND<0 5 ND<1 0 383 <br /> 7/30/2002 P 2545 4 92 2053 600 232 ND<2 5 429 ND<5 579 - <br /> 10/31/2002 P 2545 500 2045 81 17 ND<O 5 ND<O 5 ND<O 5 13 <br /> 01/30/2003 P 2545 479 2066 77 <0 50 <050 <0 50 <0 50 38 <br /> 04/30/2003 P 2545 469 2076 74 <0 50 <050 <0 50 <0 50 17 <br /> 07/30/2003 P 2545 522 2023 120 1 4 <1 0 <1 0 <1 0 67 <br /> 10/29/2003 P 25 45 509 2036 110 077 <0 50 <0 50 <0 50 18 <br /> 01/2612004 P 2545 475 2070 <50 <050 <050 <050 <0 50 12 <br /> 04/27/2004 P 2545 497 2048 65 - <0 50 <050 <050 <0 50 90 <br /> 07/30/2004 P 2545 530 2015 <50 <0 50 <050 <O 50 -<050 43 <br /> 10/28/2004 -- 2545 474 2071 - - -- -- -- - Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 2545 447 2098 -- Sampled Annually 3rd <br /> Quarter <br /> 04/29/2005 2545 480 2065 -- - -- - -- -- Sampled Annually 3rd <br /> Quarter <br /> 07/29/2005 P 2545 525 2020 <50 <0 50 <0 50 <050 <0 50 94 <br /> 10/28/2005 2645 505 2040 — — -- — — — — — Sampled Annually 3rd <br /> fluarter <br /> MW-6 I 2/9/1987 I -- j 13,000 - 100 210 2,200 - <br /> Report Date December 1,2005 Page 21 of 29 <br />