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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site 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) Wg/L) (pg/L) (pgIL) (p91L) (pg/L) Lug/L) (pg/L) (mg/L) Comments <br /> AMW-4 4/12/2000 -- 2536 440 2096 — -- -- -- — <br /> 7/22/2000 — 2536 507 2029 <br /> 10/26/2000 -- 2536 468 2068 - - — - - -- <br /> 1/17/2001 -- 2536 522 2014 <br /> 4/12/2001 -- 2536 476 2060 - - -- <br /> 5/23/2001 -- 2536 485 2051 ND<50 -- ND<0 5 147 ND<0 5 ND<1 5 ND<0 5 — <br /> 7/31/2001 — 2536 511 2025 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<0 5 — <br /> 10/30/2001 2536 498 2038 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 818 - <br /> 1/2912002 -- 2536 441 -2095 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 -- <br /> 4/30/2002 — 2536 472 2064 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 <br /> 7/30/2002 P 2536 502 2034 ND<50 ND<0 5 ND<0 5 N1)<0 5 ND<l 0 ND<0 5 - <br /> 10/31/2002 P 2536 495 2041 ND<50 ND<0 5 ND<0 5 N0<0 5 ND<0 5 ND<2 5 — <br /> I <br /> 01/30/2003 P 2536 472 2064 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 04/30/2003 P 2536 4 59 2077 <50 — <0 50 <0 50 <050 <0 50 <2 5 <br /> 07/30/2003 P 2536 518 2018 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 10/29/2003 P 2536 502 2034 <50 — <0 50 <0 50 <0 50 <0 50 <050 — <br /> 01/26/2004 P 2536 4 66 2070 <50 -- <0 50 <0 50 <0 50 <050 <0 50 -- <br /> 04/27/2004 P 2536 502 2034 <50 <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 07/30/2004 P 2536 537 1999 <50 -- <050 <0 50 <0 50 <0 50 <0 50 - <br /> 10/28/2004 -- 2536 4 48 2088 — - — — -- -- -- -- Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 2536 438 2098 — -- - -- -- -- -- -- Sampled Annually 3rd <br /> Quarter <br /> 04/29/2005 -- 2536 4 85 2051 - -- — -- — -- -- Sampled Annually 3rd <br /> Quarter <br /> 07/29/2005 P 1 2536 1 584 1 19 52 1 <50 1 -- <0 50 1 <0 50 1 <0 50 1 <0 50 <0 50 <br /> AMW-5 12/10/1991 -- 2619 595 2024 ND<30 - ND<0 30 ND<0 30 ND<O 30 ND<0 30 -- -- <br /> 3/25/1992 - 2619 539 2080 72 -- 48 ND<0 30 ND<0 30 ND<0 30 -- -- <br /> 6/25/1992 -- 2619 727 1892 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 — -- <br /> 12/8/1992 - 2619 578 2041 56 -- ND<0 5 N0<0 5 ND<0 5 ND<0 5 — <br /> 3/10/1993 — 2619 550 2069 N D<50 32 06 2 51 -- -- <br /> 6/16/1993 -- 2619 376 2243 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- — <br /> 10/22/199311 2619 593 2026 300 — ND<0 5 ND<0 5 ND<0 5 i ND<0 5 840 — <br /> Report Date October 13,2005 Page 7 of 28 <br />