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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11194 <br /> 2375 Tracy Blvd, Tracy CA <br /> Top of 11 Depth to Water Level Ethyl- Total <br /> Well Date PI Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pg/L) (pg/L) (pglL) (pg/L) (pg/L) (pg/L) (pg1L) (mglL) Comments <br /> MW-5 11611999 -- 2545 4 91 2054 <br /> 1/19/2000 - 2545 465 20 - <br /> 4/12/2000 - 2545 560 1985 <br /> 7/22/2000 -- 2545 499 2046 <br /> 10/26/2000 — 2545 457 20881/17/2001 2545 515 2030 - <br /> 4/12/2001 2545 483 2062 -- — -- — -- - -' <br /> 5123/2001 — 2545 485 2060 120 — 0 653 ND<0 5 ND<0 5 ND<1 5 619 - <br /> 7/31/2001 2545 512 2033 340 — 121 ND<0 5 0 527 ND<l 5 463 - <br /> 10/30/2001 -- 2545 497 2048 390 — 424 ND<0 5 215 ND<1 5 509 -- <br /> 1/29/2002 2545 446 2099 N0<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 493 -- <br /> 4/30/2002 — 2545 475 2070 100 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 383 - <br /> 7/30/2002 P 2545 492 2053 600 - 23 2 ND<2 5 429 ND<5 579 — <br /> 10/31/2002 P 2545 500 20 45 81 - 17 ND<0 5 ND<0 5 ND<0 5 13 — <br /> 01/30/2003 P 2545 479 2066 77 -- <0 50 <0 50 <0 50 <0 50 38 — <br /> 04/30/2003 P 2545 469 2076 74 <0 50 <0 50 <0 50 <0 50 17 — <br /> 07/30/2003 P 2545 522 2023 120 -- 14 <1 0 <1 0 <1 0 67 -- <br /> 10/29/2003 P 2545 509 2036 110 -- 077 <0 50 <0 50 <0 50 18 <br /> 01/2612004 P 2545 475 2070 <50 -- <0 50 <0 50 <0 50 <0 50 12 -- <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 /> 3113/1988 -- 2563 438 2125 -- - ~ — " — <br /> 3/231198$ 2563 442 21 21 6,300 -- 490 69 - 1 100 -- -- <br /> 6/7/1988 -- 2563 470 2093 -- - -- -- — _ <br /> 10/18/1988 - 2563 678 1885 2,800 — 140 43 81 370 -- — <br /> 2/15/1990 2563 425 21 38 5,700 -- 220 21 330 250 ~ <br /> 4/26/1990 -- 2563 450 21 13 -- — -- -- — — _ — <br /> 7/12/1990 — 25 63 4 68 20 95 '14,000 — 590 18 1,100 750 — ~ <br /> 8/27/1990 - 2563 — -- -- -- — _ — -- —11/211990 -- 2563 ~ — — — -- w — - -- <br /> 11/5/1990 -- 2563 502 2061 19,000 — 390 17 1,200 650 - <br /> Page 18 of 24 <br /> -- <br /> Report Date April 28,2004 <br />