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• • i <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TQC Depth to Water LevelI 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) Cpg1L) (pg/L) (frg/L) (pg1L) (pg1L) (pg/L) (mglL) Comments <br /> AMW-3 4/12/2001 2529 730 1799 -- _ _ — _ -_ — <br /> 5/23/2001 — 2529 718 1811 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<l 5 46 - <br /> 7/31/2001 -- 2529 744 1785 63 — ND<O 5 ND<O 5 ND<O 5 ND<1 5 838 — <br /> 10/30/2001 2529 747 1782 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 5 ND<O 5 -- <br /> 1/29/2002 — 2529 703 1826 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<1 0 599 -- <br /> 4/30/2002 — 2529 718 1811 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 0 574 <br /> 7/30/2002 P 2529 737 1792 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<1 0 72 — <br /> 10/31/2002 P 2529 665 1864 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 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 <0 50 25 -- <br /> 07/30/2003 — 2529 -- — _ _ _ — Well inaccessible Not <br /> Sampled <br /> 10129/2003 P 2529 741 1788 <50 -- <0 50 <050 <0 50 <0 50 76 <br /> 01/26/2004 P 2529 720 1809 <50 — <0 50 <0 50 <0 50 <0 50 60 <br /> 04127/2004 P 2529 715 1814 <50 -- <050 <0 50 <0 50 <0 50 13 <br /> AMW-4 8/10/1990 — 2536 4 83 2053 ND<50 — 06 07 2 9 42 — — <br /> 8/27/1990 -- 2536 483 2053 — — — __ _ — -_ <br /> 11/2/1990 — 2536 489 2047 — - _ <br /> 11/5/1990 2536 4 88 2048 ND<50 - 03 ND<O 3 ND<O 3 ND<O 3 -- — <br /> 2/25/1991 2536 408 2128 ND<50 -- ND<0 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 20 35 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 — <br /> 9/25/1991 2536 545 1991 ND<30 -- ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- <br /> 12/10/1991 2536 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<0 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 21 30 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 ND<5 0 -- <br /> 1/24/1994 -- 2536 4 81 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 3 4 <br /> 9/13/1994 — 2536 559 1977 ND<50 - ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 6 9 <br /> 1/10/1995 2536 422 2114 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<1 -- 71 <br /> Report Date July 13,2004 Page 5 of 25 <br />