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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 P1 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) (p91L) (pgll-) (pg1L) (pg1L) (pg1L) (mg/L) Comments <br /> AMW-1 10/26/2000 -- 2653 580 2073 - — — — - — -- -- <br /> 1 M 712001 — 2653 588 2065 — — - - — — -- <br /> 4/12/2001 — 2653 536 2117 — — — -- — — - — <br /> 5/23/2001 — 2653 565 2088 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 5 ND<O 5 — <br /> 7/31/2001 — 2653 605 2048 69 — ND<O 5 ND<O 5 ND<O 5 ND<1 5 ND<0 5 -- <br /> 10/30/2001 - 2653 611 2042 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 5 ND<O 5 — <br /> 1/29/2002 — 2653 486 2167 ND<50 — ND<O 5 ND<0 5 ND<O 5 ND<1 0 ND<O 5 — <br /> 4/30/2002 — 2653 491 2162 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 0 ND<0 5 — <br /> 7/30/2002 P 2653 591 2062 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 0 ND<O 5 — <br /> 10/31/2002 A 1 2653 551 2102 ND<50 — ND<O 5 N0<0 5 ND<O 5 ND<O 5 ND<2 5 — <br /> 01/30/2003 P 2653 539 2114 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 04/30/2003 P 2653 521 2132 <50 — <050 <0 50 <0 50 <0 50 <2 5 — <br /> 07/30/2003 P 1 2653 600 2053 1 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 10/29/2003 P 2653 581 2072 <50 — <0 50 <0 50 <050 <0 50 <0 50 -- <br /> 01/26/2004 P 2653 520 2133 <50 — <0 50 <0 50 <050 <0 50 <0 50 — <br /> 04/27/2004 P 2653 572 2081 <50 -- <0 50 <050 <0 50 <0 50 <0 50 — <br /> 07/30/2004 P 2653 620 20 33 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 10/2812004 — 2653 598 2055 — — — — — — — -- Sampled Annually 3rd <br /> Quarter <br /> AMW-2 4/26/1990 — 2645 494 2151 ND<50 — ND<O 3 ND<O 3 ND<0 3 ND<O 3 -- — <br /> 7/12/1990 -- 2645 521 2124 ND<50 — ND<O 3 ND<O 3 ND<0 3 ND<0 3 — — <br /> 8/27/1990 — 2645 546 2099 — — - — — -- — <br /> 11/2/1990 — 2645 547 2098 — -- — — — - — -- <br /> 11/5/1990 — 2645 549 2096 ND<50 — ND<O 3 ND<0 3 ND<O 3 ND<O 3 — -- <br /> 2/25/1991 — 2645 456 2189 ND<50 — ND<O 3 ND<O 3 ND<O 3 ND<0 3 — — <br /> 3/25/1991 -- 2645 470 2175 ND<30 -- ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- — <br /> 6/27/1991 — 2645 560 2085 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — -- <br /> 9/25/1991 -- 2645 607 2038 ND<30 — ND<O 30 ND<O 30 ND<O 30 ND<O 30 — — <br /> 12/10/1991 2645 534 21 11 ND<30 -- ND<O 30 ND<O 30 ND<O 30 ND<O 30 — — <br /> 6/25/1992 — 2645 684 1961 ND<30 -- N0<0 30 ND<O 30 ND<O 30 ND<O 30 — - <br /> 12/8/1992 — 2645 528 2117 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — <br /> 3/10/1993 -- 2645 468 2177 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — <br /> 6/16/1993 — 2645 1 489 2156 — — — — -- -- — <br /> Report Date December 16,2004 Page 2 of 26 <br />