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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 Depth to Water Level Ethyl- Total <br /> Well Date P/ Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (yg/L) (mg/L) Comments <br /> MW-5 3/23/1988 — 2545 479 2066 6200 — 420 5 -- 600 -- — <br /> 6/7/1988 — 2545 485 2060 -- - ~ - -- — — <br /> 10/18/1988 -- 2545 545 20 00 1,300 34 09 1 170 -- — <br /> 2/15/1990 — 2545 445 2100 1,900 - 220 21 330 250 -- <br /> 4/26/1990 -- 2545 465 2080 -- -- — — ~ — -- — <br /> 7/12/1990 -- 2545 472 2073 4,400 -- 140 94 130 300 -- - <br /> 8/27/1990 - 2545 515 2030 — — -- — — — -- — <br /> 11/2/1990 - 2545 520 2025 -- <br /> 11/5/1990 — 2545 521 2024 7,500 — 430 55 760 1,600 — — <br /> 2/25/1991 — 2545 429 21 16 2,400 -- 160 59 120 96 -- <br /> 6/27/1991 -- 2545 534 2011 N0<50 -- 67 ND<0 5 ND<0 5 ND<0 5 -- _ <br /> 9/25/1991 -- 2545 574 1971 1,800 — 120 39 79 94 -- — <br /> 12/10/1991 — 2545 510 2035 720 -- 46 34 38 58 -- -- <br /> 3/25/1992 -- 2545 432 21 13 550 -- 75 033 4 32 -- - <br /> 6/25/1992 2545 — -- -- ~ — -- -- — ~ ~ <br /> 12/8/1992 -- 2545 1162 1383 — I -- -- -- — — — <br /> 3/10/1993 — 2545 1211 1334 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 — -- <br /> 6/16/1993 -- 2545 1013 1532 73 - 22 21 39 57 — - <br /> 10/22/1993 -- 2545 499 2046 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 1/24/1994 -- 2545 891 1654 120 -- 11 06 26 26 ND<5 0 -- <br /> 6/7/1994 — 2545 638 1907 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 9/13/1994 — 2545 599 1946 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 1/10/1995 — 2545 435 21 10 ND<50 — ND<0 5 ND<0 5 1 <0 5 ND<1 — -- <br /> 3/23/1995 — -- — — 620 -- 20 25 55 53 — — QC-1 <br /> 3/23/1995 -- 2545 419 2126 910 -- 23 3 68 65 -- 7 9 <br /> 10/4/1995 -- 2545 541 2004 ND<50 -- 22 ND<0 50 069 ND<1 0 78 69 <br /> 1/4/1996 -- 2545 462 2083 130 — 46 1 1 45 37 87 26 <br /> 3/29/1996 — 2545 445 2100 1 490 — 27 ND<1 20 12 13 27 <br /> 7/111996 -- 2545 501 2044 580 -- 35 5 30 13 11 37 <br /> 10/15/1996 -- 2545 523 2022 380 — 39 1 2 8 6 124 34 55 <br /> 4/16/1997 — 2545 390 21 55 -- — -- -- <br /> 10/15/1997 — 2545 508 2037 -- - <br /> 3/17/1998 — 2545 470 2075 — -- <br /> Page 17 of 24 <br /> Report Date ApnI 28,2004 <br />