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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 MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) "IL) (pglL) (pg/L) (pg/L) (pg1L) (pg/L) (mg/L) Comments <br /> MW-4 5/23/2001 -- 2590 551 2039 2,700 -- 135 539 775 281 471 - <br /> 7/31/2001 -- 2590 585 2005 1,400 -- 83 108 228 11 105 -- <br /> 10/30/2001 — 2590 605 1985 390 - 406 193 0 526 ND<1 5 253 -- <br /> 1/29/2002 - 2590 498 2092 720 -- 4 54 292 396 ND<1 0 39 -- <br /> 4/30/2002 2590 522 2068 2,100 - 411 374 329 ND<5 0 105 - <br /> 7l3012002 P 2590 559 2031 1,100 — 108 1 19 335 621 395 -- <br /> 10/31/2002 P 2590 550 2040 1,900 -- 42 36 76 10 10 -- <br /> 01/30/2003 P 2590 531 2059 600 -- 14 <0 50 27 086 32 — <br /> 04/30/2003 P 2590 515 2075 1,200 084 J <0 50 93 36 41 -- <br /> 07/30/2003 P 2590 580 2010 260 -- <12 <12 <12 <1 2 49 — <br /> 10/29/2003 P 2590 563 2027 1,300 -- 34 J <10 55 J <1 0 79 J -- <br /> 01/26/2004 P 2590 530 2060 770 - <50 <50 <50 <50 16 -- <br /> 04/28/2004 P 2590 547 2043 130 -- <0 50 <050 <0 50 <0 50 84 — Water Level data from <br /> 4/27104 <br /> 07/30/2004 P 2590 597 1993 270 - 053 <0 50 069 <0 50 31 — <br /> 1 012 812 004 P 25111 554 2036 2,000 <10 <50 10 <50 120 — <br /> 01/31/2005 P 2590 502 2088 900 -- 0 75 <0 50 29 058 35 -- <br /> 104/29/20051 P 1 2590 534 2056 390 -- 080 1 <0 50 1 092 <0 50 25 -- <br /> 07/29/20051 P 1 2590 584 2006 220 -- 072 <0 50 J. <0 50 1 <0 50 15 — <br /> MW-5 2/9/1987 — - 41,000 — 2 300 2 500 — 6,220 -- -- <br /> 9/21/1987 -- -- -- -- 18,000 — 790 14 -- 2,200 — <br /> 10/20/1987 -- — -- 34,000 -- 50 ND<0 5 — 1,200 -- <br /> 11/20/1987 -- -- -- -- 8,700 — 210 6,600 -- 230 -- <br /> 3/13/1988 -- 2545 473 2072 -- - -- — -- -- -- -- <br /> 3/23/1988 -- 2545 479 2066 6,200 - 420 5 — 600 -- -- <br /> 6/7/1988 2545 4 85 2060 -- - -- -- — -- — — <br /> 10/18/1988 2545 545 2000 1,300 — 34 09 1 170 - - <br /> 2/15/1990 -- 2545 445 21 00 1,900 -- 220 21 330 250 — — <br /> 4/26/1990 — 2545 4 65 2080 -- - -- -- — -- -- -. <br /> 7/12/1990 -- 2545 472 2073 4,400 -- 140 94 130 300 -- <br /> 8/27/1990 - 2545 515 2030 -- -- -- -- — --11/211990 - 2545 520 2025 — — -- — — -- - -- <br /> 11/5/1990 -- 2545 521 2024 7,500 -- 430 55 760 1,600 — — <br /> Report Date October 13, 2005 Page 19 of 28 <br />