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s • • <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 Hate P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg1L) (pg1L) Lug/L) (pg1L) (Erg/L) (pglL) (mg/L) Comments <br /> MW-4 8/27/1990 - 2590 546 2044 <br /> 11/2/1990 — 2590 551 2039 <br /> 11/5/1990 — 2590 .553 20 37 950 -- 330 18 52 29 <br /> 2/25/1991 — 2590 473 21 17 370 -- 120 33 22 13 -- <br /> 6/27/1991 2590 564 2026 1 500 — 130 ND<0 5 21 18 — <br /> 9/25/1991 - 2590 660 1930 810 -- 70 49 12 110 -- -- <br /> 12/10/1991 25 90 5 43 20 47 1 300 - 100 14 62 110 — <br /> 3/25/1992 -- 2590 489 21 01 1 400 500 40 210 320 -. <br /> 6/25/1992 - 2590 711 1910 -- — — -- - - 0 40 ft free product <br /> present,[a] <br /> 12/8/1992 -- 2590 539 2051 — -- — — Sheen <br /> 3/10/1993 2590 4 95 2095 - -- — -- — Sheen <br /> 6/16/1993 - 2590 547 20 43 -- -- — — _ Sheen <br /> 10/22/1993 — 2590 550 2040 — -- — -- -- Sheen <br /> 1/24/1994 2590 554 2036 6,900 - 88 16 130 340 582 <br /> 6!7/1994 25 90 598 1992 23,000 210 30 720 1 200 138 32 <br /> 9/13/1994 -- - 5 600 — 21 13 220 500 _ QC_1 <br /> 9/13/1994 — 2590 483 21 07 5100 86 1 280 510 — 62 <br /> 9/13/1994 -- 25 90 642 1948 9 000 — 20 15 240 550 68 7 <br /> 1/10/1995 -- -- - — 2 300 74 1 220 380 - -- QC-1 <br /> 3/23/1995 - 2590 472 2125 - — - -- -- -- 0 09 ft free product <br /> present (a] <br /> 10/4/1995 - 2590 594 2007 - — -- — — -- -- -. 0 14 ft free product <br /> present,(a) <br /> 1/4/1996 -- 2590 512 2078 1 700 - 27 2 5 36 58 25 0 8 <br /> 3/29/1996 -- 2590 4 97 2093 1,300 76 ND<l 36 32 ND<10 24 <br /> 7/1/1996 2590 557 2033 11 000 160 49 590 836 ND<100 4 <br /> 10/15/1996 -- — — - 1 100 22 ND<5 0 75 85 ND<50 47 QC-1 <br /> 10/15/1996 -- 2590 577 2013 2 100 — 39 ND<10 160 190 ND<100 47 <br /> 4/16/1997 -- 2590 533 2057 5,000 -- 173 ND<5 0 775 767 131 37 <br /> 10/15/1997 2590 571 2019 510 29 ND<i 0 91 636 25 73 <br /> 3/17/1998 2590 4 87 21 03 890 -- 36 ND<l 0 51 88 620 63 <br /> 1/611999 2590 542 2048 4,100 -- 11 19 180 110 84 -- <br /> 9/13/1999 2590 562 2028 2 400 - 42 65 1 89 21 330 - <br /> Report Date July 13,2004 Page 16 of 25 <br />