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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 /> Top of Depth to Water Level Ethyl- Total <br /> Well Date P/ Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pglL) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pglL) (mg/L) Comments <br /> AMW-2 1/10/1995 — 2645 472 2173 -- - — — — — <br /> 3123/1995 - 2645 440 2205 62 — ND<0 50 ND<0 50 ND<0 50 ND<i 0 -- 97 <br /> 10/4/1995 - 2645 592 2053 — -- — — - — <br /> 1/4/1996 — 2645 490L29232) <br /> — — — -- -- — ~ — <br /> 3/29/1996 2645 473ND<50 ND<0 5 ND<1 ND<1 ND<i ND<10 32 <br /> 7/1/1996 - 2645 528 -- - — -- — '- -- <br /> 10/15/1996 - 2645 549 - <br /> 4/16/1997 2645 413 -- <br /> 10/15/1997 - 2645 567 2078 — -- — - - — — — <br /> 3/17/1998 — 2645 523 2122 - <br /> 1/6/1999 2645 523 2122 - — — -- — -- -' <br /> 9/13/1999 - 2645 519 2126 <br /> 1/19/2000 -- 2645 489 2156 — — — -- -- — -- — <br /> 4/12/2000 — 2645 509 2136 -- — ~ — -- -- — _ <br /> 7/2212000 — 2645 549 2096 -- - — ~ — -- — <br /> 10/26/2000 -- 2645 535 21 10 — - — -' <br /> 1/17/2001 — 2645 540 2105 — - - — -- — '- <br /> 4/12/2001 — 2645 515 21 30 <br /> 5/23/2001 — 2645 531 21 14 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<0 5 — <br /> 7/31/2001 — 2645 557 2088 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<0 5 - <br /> 10/30/2001 — 2645 548 2097 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<0 5 -- <br /> 1/29/2002 -- 2645 4 77 2168 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 — <br /> 4/30/2002 -- 2645 513 21 32 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 -- <br /> 7/30/2002 P 2645 545 2100 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 — <br /> 10/31/2002 P 2645 543 21 02 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 5 <br /> 01/30/2003 P 2645 511 21 34 <50 <0 50 <0 50 <0 50 <0 50 <0 50 - <br /> 04/30/2003 P 2645 491 21 54 <50 <0 50 <0 50 <0 50 <0 50 <2 5 - <br /> 07/30/2003 P 2645 568 2077 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 10/29/2003 P 2645 559 2086 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 01/26/2004 P 2645 506 2139 <50 — <0 50 <050 <050 <0 50 <0 50 -- <br /> AMW-3 8/10/1990 - 2529 746 1783 90 06 41 28 21 -- <br /> 8127/1990 -- 2529 746 1783 — -- — -- — — ~ <br /> 1101990 — 2,529 -- — - — - -- — -' — <br /> Report Date April 28,2004 __ _— � Page 3 of 24 <br />