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• • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TQC 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) (IrgIL) (pg1L) (pg1L) (pg1L) (Irg/L) (pg/L) (pglL) (mg/L) Comments <br /> MW-5 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 /> 4112l2001 — 2545 483 2062 <br /> 5/23/2001 -- 2545 4 85 2060 120 -- 0 653 ND<0 5 ND<0 5 ND<1 5 619 -- <br /> 7/31/2001 — 2545 512 20 33 340 121 ND<0 5 0 527 ND<1 5 463 - <br /> 10/30/2001 - 2545 497 2048 390 — 424 ND<0 5 215 ND<1 5 509 — <br /> 1/29/2002 -- 2545 4 46 20 99 N0<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 <br /> --493 <br /> - <br /> 4/30/2002 -- 25 45 475 2070 100 — ND<0 5 ND<0 5 ND<0 5 Nb<1 0 <br /> 383 — <br /> 7/30/2002 P 25 45 4 92 20 53 600 — 232 ND<2 5 429 ND<5 579 -- <br /> 1 0/3 1 120 02 P 25 45 500 2045 1 81 — 1 7 ND<0 5 ND<0 5 ND<0 5 13 <br /> 01/30/2003 P 25 45 479 2066 77 <0 50 <0 50 <0 50 <0 50 38 — <br /> 04/30/2003 P 25 45 4 69 20 76 74 — <0 50 <0 50 <0 50 <0 50 17 - <br /> 07/30/2003 P 2545 ---522 20 23 120 — 14 <1 0 <1 0 <1 0 67 - <br /> 10/29/2003 P 2545 5 09 20 36 110 — 077 <0 50 <0 50 <0 50 18 -- <br /> 01/26/2004 P 25 45 4 75 20 70 <50 - <0 50 <0 50 <0 50 <050 12 - <br /> 04/27/2004 P 2545 497 2048 65 — <0 50 <0 50 <0 50 <0 50 90 <br /> 07/30/2004 P 25 45 530 2015 <50 — <0 50 <0 50 <0 50 <0 50 43 — <br /> 1 012 812 0 0 4 .- 2545 474 20 71 — - — -- -- -- -- - Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 -- 25 45 4 47 2098 -- -- -- -- -- -- — -- Sampled Annually 3rd <br /> Quarter <br /> MW-6 2/9/1987 — — -- -- 13,000 -- 100 210 — 2,200 — <br /> 9/21/1987 -- -- -- — 370,000 - 4 000 77 — 4 400 — — <br /> 10/20/1987 -- — -- 5,300 — 210 4 — 97 _ <br /> 11/20/1987 - -- -- — 270 -- ND<0 5 1,800 9 — — <br /> 3/13/1988 2563 438 2125 -- — — _ <br /> 3/23/1988 — 2563 442 2121 6,300 490 69 — 1,100 - — <br /> 6/7/1988 — 2563 4 70 2093 -- <br /> 10/18/1988 — 2563 678 1885 2,800 — 140 43 81 370 — -- <br /> i <br /> Report Date April 8,2005 Page 20 of 27 <br />