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• i i <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station 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) (,ug/L) (uglL) (pg/L) (pg/L) (figlL) (lrglL) (pg1L) (mg/L) Comments <br /> MW-5 7/31/2001 -- 2545 512 2033 340 -- 121 ND<0 5 0 527 ND<1 5 463 — <br /> 10/30/2001 2545 497 2048 390 — 424 ND<0 5 215 Ni)<1 5 509 -- <br /> 1/29/2002 - 2545 446 2099 ND<50 — ND<0 5 ND<0 5 ND<0 5 N0<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 — 232 ND<2 5 429 ND<5 579 — <br /> 10131/2002 P 2545 500 2045 81 — 17 ND<0 5 ND<0 5 ND<0 5 13 — <br /> 01/30/2003 P 2545 479 2066 77 — <050 <0 50 <0 50 <050 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 /> 01/26/2004 P 2545 4 75 2070 <50 — <0 50 <0 50 <050 <0 50 12 -- <br /> 04/27/2004 P 2545 497 1 2048 65 — <050 <0 50 <0 50 <050 90 -- <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 21 25 -- — -- -- — <br /> 3/23/1988 - 2563 442 2121 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 2138 5,700 -- 220 21 330 250 — -- <br /> 4/26/1990 - 2563 450 2113 <br /> 7/12/1990 -- 2563 468 2095 14,000 — 590 18 1,100 750 — -- <br /> 8/27/1990 — 2563 -- <br /> 11/211990 -- 2563 — <br /> 11/511990 - 2563 502 2061 19,000 - 390 17 1 200 650 — <br /> 2/25/1991 — 2563 4 10 21 53 6,600 -- 310 14 410 110 -- <br /> 6/27/1991 2563 509 2054 170,000 — 260 61 140 370 -- <br /> 91125/1991 2563 560 2003 20 000 - 510 19 910 340 — -- <br /> 12/10/1991 - 2563 488 2075 7 500 -- 170 69 350 60 -- <br /> 3/25/1992 — 2563 428 21 35 5 100 920 30 990 360 <br /> 6/25/1992 - 2563 679 1954 — — -- - 0 87 ft free product <br /> present [a] <br /> Report Date July 13,2004 Page 19 of 25 <br />