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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) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> AMW-3 07/30/2004 P 2529 768 1761 <50 <050 <0 50 <0 50 <0 50 31 <br /> 10/28/2004 P 2529 749 1780 <50 <0 50 <0 50 <0 50 <0 50 29 <br /> 01131/2005 P 2529 717 1812 <50 <0 50 <0 50 <0 50 <0 50 24 <br /> 04/29/2005 P 2529 720 1809 <50 <0 50 <0 50 <0 50 <0 50 60 <br /> 07/29/2005 P 2529 734 1795 <50 <050 <0 50 <0 50 <0 50 46 <br /> 10/28/2005 P 2529 735 1794 <50 — <0 50 <0 50 <0 50 <0 50 28 <br /> AMW-4 8/10/1990 2536 483 2053 ND<50 0 6 07 2 9 42 <br /> 8/27/1990 2536 4 83 2053 - - -- <br /> 11/2/1990 2536 489 2047 - <br /> 11/5/1990 2536 488 2048 ND<50 03 ND<0 3 ND<0 3 ND<0 3 - - <br /> 2/25/1991 2536 408 21 28 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 <br /> 3/25/1991 2536 426 2110 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 <br /> 6/27/1991 2536 501 2035 ND<50 ND<O 5 N0<0 5 ND<O 5 ND<O 5 <br /> 9/25/1991 2536 545 1991 ND<30 ND<O 30 ND<0 30 ND<O 30 ND<O 30 <br /> 12/10/1991 25 36 479 2057 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 <br /> 6/25/1992 2536 616 1920 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 <br /> 12/8/1992 2536 474 2062 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 <br /> 3/10/1993 2536 428 2108 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 - - <br /> 6/16/1993 2536 406 2130 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 - -- <br /> 10/22/1993 2536 485 2051 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 N0<5 0 <br /> 1/24/1994 2536 481 2055 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 - <br /> 6/7/1994 2536 530 2006 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 34 <br /> 9/13/1994 - 2536 559 1977 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<5 0 69 <br /> 1/10/1995 2536 422 21 14 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 71 <br /> 3/23/1995 2536 398 21 38 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 79 <br /> 10/4/1995 25 36 532 2004 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 ND<5 0 5 9 <br /> 1/4/1996 2536 4 48 2088 ND<50 ND<O 50 ND<O 50 ND<O 50 ND<1 0 ND<5 0 1 <br /> 3/29/1996 2536 432 21 04 ND<50 ND<O 5 ND<1 ND<1 ND<i N13<10 37 <br /> 7/1/1996 2536 4 88 2048 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 61 <br /> 10/15/1996 2536 509 2027 ND<50 ND<O 5 ND<1 0 ND<1 0 ND<1 0 ND<10 7 5 <br /> 4/16/1997 -- 2536 367 21 69 - <br /> 10/15/1997 2536 512 2024 -- - - -- <br /> 3/17/1998 2536 471 2065 - - <br /> Report Date December 1,2005 Page 6 of 29 <br />