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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 TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (Ng1L) (ug1L) (Frg/L) (trg1L) (uglL) WglL) (pglL) (mg/L) Comments <br /> i <br /> AMW-2 12/10/1991 -- 2645 534 21 1 1 ND<30 - ND<O 30 ND<O 30 ND<O 30 ND<O 30 — -- <br /> 6/25/1992 — 2645 684 1961 N0<30 — ND<0 30 ND<O 30 ND<0 30 ND<O 30 -- <br /> 12/8/1992 2645 528 21 17 ND<50 -- ND<O 5 ND<0 5 ND<O 5 ND<O 5 — — <br /> 3/10/1993 - 2645 468 21 77 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 - -- <br /> 6/16/1993 -- 2645 489 2156 — -- - - — -- - <br /> 1012211993 -- 2645 538 2107 <br /> 1/24/1994 - 2645 506 2139 -- - - — — ~ <br /> 6/7/1994 -- 2645 551 2094 1 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 35 <br /> 911311994 -- 2645 616 2029 - -- — -- -- <br /> 1/10/1995 -- 2645 4 72 21 73 -- <br /> 2645 <br /> -2645 440 2205 62 -- ND<0 50 ND<0 50 ND<O 50 ND<1 0 -- 97 <br /> 10/4/1995 — 26 45 5 92 2053 -- <br /> 1/4/1996 -- 2645 490 21 55 -- -- ~ — -- '- <br /> 3/29/1996 2645 473 2172 ND<50 - ND<O 5 ND<1 ND<1 ND<1 ND<10 32 <br /> 711!1996 -- 2645 528 21 17 -- — -- -- — -- <br /> 1011511996 — 2645 549 20 96 - ~ — -- -- — <br /> 4/16/1997 — 2645 413 2232 -- <br /> 10/15/1997 -- 2645 567 2078 - -- — -- -- — <br /> 3/17/1998 — 2645 523 2122 -- — - — -- — -- <br /> 11611999 -- 2645 523 21 22 - <br /> 9/13/1999 — 2645 519 2126 — — ~ - -- -- — <br /> 1/19/2000 2645 4 89 2156 <br /> 4!1212000 -- 2645 509 2136 -- -- - — -- <br /> 7l2212000 -- 2645 549 2096 -- <br /> 10/26/2000 - 2645 535 2110 -- -- — ~ — -- <br /> 111712001 -- 2645 540 2105 -- <br /> 4112/2001 -- 2645 515 21 30 -- — -- - — -- — -' <br /> 5/23/2001 -- 26 45 5 31 21 14 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 5 ND<0 5 - <br /> 7/31/2001 -- 2645 557 2088 ND<50 -- NO<0 5 ND<O 5 ND<O 5 ND<1 5 ND<0 5 -- <br /> 10/30/2001 — 2645 548 2097 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<1 5 ND<0 5 -- <br /> 1/29/2002 -- 26 45 4 77 21 68 ND<50 — ND<O 5 N0<0 5 ND<O 5 ND<1 0 ND<O 5 -- <br /> 4/30/2002 -- 2645 513 2132 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 0 ND<0 5 — <br /> 7/30/2002 P 2645 545 2100 ND<50 ~ N0<0 5 ND<O 5 ND<O 5 ND<1 0 ND<0 5 — <br /> Report Date October 13, 2005 Page 3 of 28 <br />