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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) (pg1L) (vg1L) (WgiL) (pg1L) (lrg/L) (pg/L) (Ng/L) (mg/L) Comments <br /> AMW-3 7/31/2001 - 2529 744 1785 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 5 99 — <br /> 4/30/2002 -- 2529 718 1811 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 574 - <br /> 7/30/2002 P 2529 737 1792 ND<50 — ND<0 5 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 755 1774 <50 — <0 50 <0 50 <0 50 <0 50 41 — <br /> 04/30/2003 P 2529 704 1825 <50 — <0 50 <0 50 <0 50 <050 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 <050 76 -- <br /> 01/26/2004 P 2529 720 1809 <50 — <0 50 <0 50 <0 50 <050 60 -- <br /> AMW-4 8/10/1990 -- 2536 483 2053 ND<50 -- 0 6 07 29 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 2128 ND<50 — ND<0 3 ND<0 3 ND<0 3 ND<0 3 — <br /> 3/25/1991 — 2536 426 2110 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 -- -- <br /> 9/25/1991 — 2536 545 1991 ND<30 — ND<O 30 ND<0 30 ND<0 30 ND<0 30 - - <br /> 12/10/1991 -- 2536 479 2057 ND<30 - ND<O 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 -- 2536 474 2062 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 3/10/1993 -- 2536 428 2108 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 — — <br /> 6/16/1993 2536 406 21 30 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 10/22/1993 -- 2536 485 2051 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 — <br /> 1/24/1994 — 2536 481 2055 ND<50 -- ND<0 5 ND<0 5 N0<0 5 ND<0 5 ND<5 0 -- <br /> 6/7/1994 -- 2536 530 2006 ND<50 — ND<0 5 ND<0 5 ND<0 5 N0<0 5 ND<5 0 34 <br /> 9/13/1994 -- 2536 559 1977 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 69 <br /> 1/10/1995 — 2536 422 21 14 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 -- 71 <br /> 3/23/1995 — 2536 398 2138 ND<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 79 <br /> 10/4/1995 - 2536 532 2004 ND<50 - ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 59 <br /> 1/4/1996 - 2536 448 2088 ND<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 1 <br /> Report Date April 28,2004 Page 5 of 24 <br />