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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 /> 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) (pgIL) (pg/L) (pg/L) (pg1L) (jug/L) (pglL) (mg/L) Comments <br /> MW-3 6/27/1991 -- 2521 541 1986 36,000 - 210 71 690 2,200 — — 0 08 ft free product <br /> present,[a] <br /> 9/25/1991 -- 2521 615 1938 -- — — — -- -- — 0 42 ft free product <br /> present,[a] <br /> 12/10/1991 -- 2521 526 1997 -- -- — — — — -- — 0 03 It free product <br /> present,[a] <br /> 3/25/1992 -- 2521 420 2102 -- — — — - — — 0 01 ft free product <br /> present,[a) <br /> 6/25/1992 -- 2521 6 52 1915 -- — — -- — - — -- 0 60 ft free product <br /> present,[a] <br /> 12/8/1992 -- 2521 503 2041 — -- — — — -- -- 0 30 ft free product <br /> present, [a] <br /> 3/10/1993 — 2521 429 2092 — - — - — -- — ISheen <br /> 6/16/1993 -- 2521 4 84 2037 -- -- — - — — — Sheen <br /> 10/22/1993 — 2521 489 2032 — — — - — — -- -- Trace <br /> 1/24/9994 — 2521 1270 1251 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 157 -- <br /> 6/7/1994 — 2521 1320 1201 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- — <br /> 9/13/1994 — 2521 1160 1361 1 ND<50 -- 33 ND<0 5 ND<0 5 19 ND<5 0 — <br /> 1/10/1995 — 2521 552 1969 240 1 — 9 4 12 38 -- -- <br /> 3/23/1995 -- 25 21 412 2109 ND<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 0 — 76 <br /> 10/4/1995 — -- -- -- ND<50 -- ND<0 50 ND<0 50 077 ND<1 0 ND<5 0 -- QC-1 <br /> 10/4/1995 — 2521 533 1988 ND<50 — 054 ND<0 50 12 11 ND<5 0 48 <br /> 1/4/1996 — 2521 584 1943 — -- -- — -- - -- 0 08 ft free product <br /> present, [a] <br /> 3/29/1996 — 2521 568 1961 -- -- -- .. - -- — 010 It free product <br /> present,[a] <br /> 7/1/1996 -- 2521 623 1903 -- -- — — -- - — 0 06 ft free product <br /> present,[a] <br /> 10/15/1996 — 2521 645 1878 — -- — — — - -- — 0 03 ft free product <br /> present,[a] <br /> 4/16/1997 -- -- — — ND<500 -- ND<5 0 ND<10 0 ND<10 0 ND<10 0 ND<100 — QC-1 <br /> 4/16/1997 — 2521 475 2047 2 300 -- 37 ND<10 0 170 170 ND<100 43 0 01 ft free product <br /> present,[a] <br /> 10/15/1997 -- 25 21 518 2003 690 -- 55 31 16 11 1 11 65 <br /> 3/17/1998 -- — — — ND<5 0 — 08 ND<1 0 ND<1 0 ND<1 0 ND<10 — QC-1 <br /> 3/17/1998 -- 2521 4 24 2097 ND<5 0 — 09 ND<1 0 ND<1 0 ND<1 0 ND<10 66 <br /> Report Date July 13, 2004 Page 14 of 25 <br />