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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 P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MIZE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (Erg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-2 04/28/2004 P 2633 584 2049 <50 <0 50 <0 50 <0 50 <0 50 <0 50 Water Level data from <br /> 4127104 <br /> 07/30/2004 P 2633 609 2024 130 54 <0 50 <0 50 <0 50 <050 <br /> 10/28/2004 2633 534 2099 -- -- -- - -- -- Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 2633 501 21 32 Sampled Annually 3rd <br /> Quarter <br /> 04/29/2005 2633 573 2060 -- -- Sampled Annually 3rd <br /> Quarter <br /> 07/29/2005 P 2633 603 2030 <50 c0 50 <0 50 <05 0 <0 50 1 <050 <br /> 10/28/2005 -- 2633 596 2037 -- -- -- -- — — — — Sampled Annually 3rd <br /> Quarter <br /> MW-3 9/2/1986 - - - 320,000 5,000 2,000 1,000 - <br /> 2/9/1987 - - -- <br /> 9/21/1987 <br /> 10/20/1987 -- - -- - <br /> 11/20/1987 - - <br /> 3/13/1988 2521 473 2048 -- -- <br /> 3/23/1988 2521 479 2042 - - -- <br /> 6/7/1988 - 2521 490 2031 - - - - -- <br /> 10/8/1988 -- 2521 545 1976 300,000 7,000 9,700 20,000 4,000 <br /> 2/15/1990 2521 435 21 07 - - - - 0 27 ft free product <br /> present,[a] <br /> 4/26/1990 2521 473 2052 0 05 ft free product <br /> present,[a] <br /> 7/12/1990 2521 458 2064 0 01 ft free product <br /> present,[a] <br /> 8/27/1990 2521 515 2006 - <br /> 11/2/1990 2521 520 2001 - - -- -- - -- <br /> 11/5/1990 2521 520 2001 35,000 850 560 1,900 5,600 <br /> 2/25/1991 2521 4 39 2082 9,800 110 47 300 590 <br /> 6/27/1991 2521 541 1986 36,000 210 71 690 2200 0 08 ft free product <br /> present,(a) <br /> 9/25/1991 2521 615 1938 - - - - 0 42 ft free product <br /> present,[a] <br /> Report Date December 1,2005 Page 15 of 29 <br />