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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) (pglL) (pg/L) (pg1L) (pg/L) (pg1L) (pg/L) (pg1L) (mg/L) Comments <br /> AMW-3 10/26/2000 -- 2529 738 1791 -- — -- -- — -- — <br /> 1/17/2001 -- 2529 739 1790 — — — -- ~ — -- — <br /> 4/12/2001 - 2529 730 1799 — — "- — — <br /> 5/23/2001 -- 2529 7 18 1811 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 46 — <br /> 7/31/2001 — 25 29 7 44 17 85 63 - ND<0 5 ND<0 5 ND<0 5 ND<1 5 838 -- <br /> 10/30/2001 -- 2529 747 1782 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<0 5 -- <br /> 1/29/2002 — 2529 703 1826 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 599 -- <br /> 4/30/2002 — 2529 718 1811 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<i 0 574 — <br /> 7/30/2002 P 2529 737 1792 ND<50 — ND<05 ND<0 5 ND<0 5 ND<1 0 72 -- <br /> 10/31/2002 P 2529 665 1864 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 64 — <br /> 01/30/2003 P 2529 7 55 1774 <50 — <0 50 <050 <0 50 <0 50 41 — <br /> 04/30/2003 P 2529 704 1825 <50 — <050 <0 50 <0 50 <0 50 25 — <br /> 07/30/2003 - 2529 -- -- — -- — -- — -- - -- Well inaccessible,Not <br /> Sampled <br /> 10/29/2003 P 2529 741 1788 <50 — <0 50 <0 50 <0 50 <0 50 76 -- <br /> 01/26/2004 P 2529 720 1809 <50 - <0 50 <0 50 <0 50 <0 50 60 <br /> 04/27/2004 P 2529 715 1814 <50 — <0 50 <0 50 <0 50 <0 50 13 -- <br /> 0713012004 P 2529 768 1761 <50 — <050 <0 50 <0 50 <0 50 31 <br /> AMW4 8/10/1990 — 2536 483 20 53 ND<50 — 06 07 29 4 2 — — <br /> 8/27/1990 — 2536 483 2053 — -- — — — -- — — <br /> 11/2/1990 — 25 36 4 89 2047 -- -- - - — — — — <br /> 11/5/1990 — 2536 4 88 2048 ND<50 — 03 ND<0 3 ND<0 3 ND<0 3 — <br /> 2/25/1991 — 2536 408 2128 ND<50 -- ND<0 3 ND<0 3 ND<0 3 ND<0 3 — — <br /> 3125M991 — 2536 426 21 10 ND<30 -- ND<0 30 ND<0 30 ND<0 30 ND<0 30 — — <br /> 6/27/1991 — 2536 501 2035 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 — ~ I <br /> 9/25/1991 — 2536 545 1991 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 — -- <br /> 12/10/1991 -- 2536 479 2057 ND<30 -- ND<0 30 ND<0 30 ND<0 30 ND<0 30 - -- <br /> 6/25/1992 -- 2536 616 1920 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 — <br /> 12/8/1992 -- 25 36 474 2062 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 — — <br /> 3/10/1993 -- 2536 428 21 08 ND<50 -- N[<0 5 ND<0 5 ND<0 5 ND<0 5 - — <br /> 6/16/1993 -- 2636 406 21 30 N0<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 - — <br /> i0122/1993 -- 25 36 485 2051 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 — <br /> 1/24/1994 — 25 36 4 8120 55 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 <br /> Page 5 of 26 <br /> -- <br /> Report Date September 10,2004 <br />