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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 Da <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) ("91L) (pg1L) (41L) (pg1L) (pg/L) (p91L) (mg1L) Comments <br /> AMW-4 04/30/2003 P 2536 459 2077 <50 — <0 50 <0 50 <0 50 <0 50 <25 -- <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 <050 <0 50 <0 50 <0 50 — <br /> 01/26/2004 P 2536 466 2070 <50 -- <0 50 <050 <0 50 <0 50 <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 — <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 1012812004 — 2536 448 2088 — — — — — — — — Sampled Annually 3rd <br /> Quarter <br /> AMW-5 12/10/1991 — 2619 595 2024 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- — <br /> 3/25/1992 — 2619 539 2080 72 -- 4 8 ND<0 30 ND<0 30 ND<0 30 — — <br /> 6/25/1992 - 2619 727 18 92 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 ND<0 5 N0<0 5 ND<0 5 — - <br /> 3/10/1993 — 2619 550 2069 ND<50 — 32 06 2 51 — -- <br /> 6/16/1993 — 2619 376 2243 N0<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 — — <br /> 10/22/1993 — 2619 593 2026 300 — ND<0 5 ND<0 5 N0<0 5 ND<0 5 840 — <br /> 1/24/1994 — 2619 511 2064 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 45 — <br /> 6/7/1994 — 2619 601 2018 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 37 <br /> 9/13/1994 — 2619 633 1986 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 73 <br /> 1/10/1995 — 2619 541 2078 N0<50 — 5 2 ND<0 5 2 — 51 <br /> 3/23/1995 — 2619 542 2077 ND<50 — 15 ND<0 50 079 16 -- 93 <br /> 90/4/1995 — 2619 630 1989 210 — ND<1 0 ND<1 0 ND<1 0 ND<2 0 840 64 <br /> 1/4/1996 — — — — 370 — ND<2 5 ND<2 5 ND<2 5 ND<5 0 1,300 -- flG1 <br /> 1/4/1996 — 2619 571 2048 360 -- ND<2 5 ND<2 5 ND<2 5 ND<5 0 1,300 19 <br /> 3/2911996 - 2619 550 2069 9,400 — 25 6 14 4 12,000 3 <br /> 7/1/1996 — — — — 170 — ND<0 5 ND<1 ND<1 ND<1 230 — QC-1 <br /> 7/1/1996 — 2619 605 2014 170 -- ND<0 5 ND<1 ND<1 ND<1 220 52 <br /> 10/15/1996 — 2619 627 1992 ND<250 -- 10 ND<5 0 N0<5 0 ND<5 0 27,000 64 <br /> 4/16/1997 — 2619 484 2135 — — — — -- — — — <br /> 10/15/1997 -- 2619 604 2015 — — — - — -- -- -- <br /> 3/17/1998 -- 2619 560 2059 -- -- - -- — — — <br /> 1/6/1999 — 2619 579 2040 -- — -- -- -- - — - <br /> 9113/1999 -- 2619 557 2062 — — — -- — — — — <br /> 1/19/2000 -- 2619 5 69 2050 — — — — -- -- <br /> Report Date December 16,2004 Page 7 of 26 <br />