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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) (gg/L) (pg/L) (pg/L) (pg/L) (99/1-) (pglL) (/rg/L) (mglL) Comments <br /> AMW 4 1/6/1999 2536 483 2053 <br /> 9/13/1999 2536 513 2023 - <br /> 1/19/2000 2536 455 2081 <br /> 4/12/2000 2,536 440 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<O 5 147 NO<O 5 ND<1 5 ND<O 5 <br /> 7/31/2001 2536 511 2025 ND<50 NO<O 5 ND<O 5 ND<O 5 ND<1 5 ND<O 5 - <br /> 10/30/2001 -- 2536 498 2038 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<1 5 818 <br /> 1/29/2002 2536 441 2095 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 0 ND<O 5 <br /> 4/30/2002 2536 472 2064 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 0 ND<O 5 <br /> 7/30/2002 P 2536 502 2034 ND<50 ND<O 5 ND<0 5 -ND<O 5 ND<1 0 ND<O 5 <br /> 10/31/2002 P 2536 1 495 2041 1 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<2 5 <br /> 01/30/2003 P 2536 472 2064 <50 <050 <050 <0 50 <0 50 <0 50 <br /> 04/30/2003 P 2536 459 2077 <50 <0 50 <0 50 <050 <0 50 <25 <br /> 07/30/2003 P 2536 518 2018 <50 <0 50 <0 50 <050 <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 <0 50 <0 50 <0 50 <050 <br /> 04127/2004 P 2536 502 2034 <50 <0 50 c0 50 <0 50 <0 50 <0 50 <br /> 07/30/2004 P 2536 537 1999 <50 <0 50 <0 50 <050 <0 50 <050 <br /> 10/28/2004 -- 2536 448 2088 - -- -- -- -- Sampled Annually 3id <br /> Quarter <br /> 01/31/2005 2536 438 2098 - - - Sampled Annually 3rd <br /> arter <br /> 04/29/2005 2536 485 2051 -- -- - -- -- -- - Sampled Annually 3rd <br /> Quarter <br /> 07/29/2005 P 2536 584 1952 <50 <050 <0 50 <050 <0 50 <0 50 <br /> 10/28/2005 — 25 3$ 508 2028 — — -- — — — — — Sampled Annually 3rd <br /> Quarter <br /> AMW-5 12/10/1991 2619 595 2024 ND<30 ND<0 30 ND<O 30 ND<O 30 ND<O 30 -- <br /> 3/25/1992 2619 539 2080 72 - 48 ND<O 30 ND<O 30 ND<O 30 <br /> 6/25/1992 - 2619 727 1892 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<0 30 <br /> Report Date December f,2005 _ _ Page 7 o/29 <br />