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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 Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (irg/L) (pgll-) (.vglL) (pglL) (mglL) Comments <br /> AMW-5 10/31/2002 P 2619 588 2031 50 -- 066 ND<0 5 ND<0 5 ND<0 5 19 — <br /> 01/30/2003 P 2619 577 2042 52 — <0 50 <0 50 <0 50 092 24 — <br /> 04/30/2003 P 2619 553 2066 <50 — <050 <0 50 <0 50 <050 76 — <br /> 07/30/2003 P 2619 611 2008 300 R -- 94 <2 5 <2 5 <2 5 44 — <br /> 10/29/2003 P 2619 605 2014 <50 — <0 50 <0 50 <0 50 <0 50 47 <br /> 01/26/2004 P 2619 574 2045 <50 -- <05G <0 50 <0 50 <0 50 58 - <br /> 04/27/2004 P 2619 5 95 2024 <50 -- <050 <0 50 <0 50 <0 50 1 1 1 -- <br /> AMW-6 12/10/1991 — 2668 585 2083 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- <br /> 3/25/1992 — 2668 4 86 2182 97 — 43 ND<0 30 74 61 - - <br /> 6/25/1992 -- 2668 700 1968 ND<30 -- ND<0 30 ND<0 30 ND<0 30 ND<0 30 - — <br /> 12/8/1992 -- -- — — ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 - - QC-2 <br /> 12/8/1992 — 2668 582 2086 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- — <br /> 3/10/1993 — -- - - ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 — -- QC-2 <br /> 3/10/1993 — 2668 547 21 21 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 — -- <br /> 6/16/1993 — -- -- — ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 — QC-2 <br /> 6/16/1993 2668 348 2320 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 — - <br /> 10/22/1993 — -- — ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 — QC-2 <br /> 10/22/1993 -- 2668 590 2078 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 1/24/1994 -- -- — — ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 — — QC-2 <br /> 1/24/1994 -- -- — ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- QC-1 <br /> 1/24/1994 - 2668 578 2090 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- <br /> 6/7/1994 — -- -- -- ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- — QC-2 <br /> 6/7/1994 — 2668 623 2045 ND<50 — ND<0 5 ND<0 5 N0<0 5 ND<0 5 - 34 <br /> 9/13/1994 - -- -- — ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 - -- QC-2 <br /> 9/13/1994 2668 639 2029 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 82 <br /> 1/10/1995 — -- -- — ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 — -- QC-2 <br /> 1/10/1995 2668 540 2128 ND<50 1 ND<0 5 3 2 -- 64 <br /> 3/23/1995 - -- -- — ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 — — QC-2 <br /> 3/23/1995 - 2668 550 21 18 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 — 84 <br /> 10/4/1995 -- — -- ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 -- QC-2 <br /> 10/4/1995 -- 2668 618 2050 ND<50 N0<0 50 ND<0 50 ND<0 50 N0<1 0 ND<5 0 66 <br /> 1/4/1996 - — — ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 -- QC-2 <br /> 1/4/1996 2668 568 2100 ND<50 ND<0 50 ND<0 50 L. ND<0 50 ND<1 0 68 14 <br /> Report Date July 93,2004 M Page 8 of 25 <br />