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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 PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg1L) (pg/L) (pg1L) (pg1L) (pg/L) (pglL) (mg1L) Comments <br /> AMW-3 4/16/1997 — 2529 635 18 94 — — -- .- -- — - — <br /> 10/15/1997 — 2529 750 1779 — — -- -- - — — — <br /> 3/17/1998 — 2529 709 1820 — — — — — -- - <br /> 116l1999 -- 2529 725 1804 — — — .- — -- -- -- <br /> 9/13/1999 -- 2529 8 01 1728 <br /> 1/19/2000 — 2529 700 1829 -- <br /> 4/12/2000 -- 2529 731 1798 — -- -- -- -- -- -- — <br /> 7/22/2000 — 2529 736 1793 -- -- -- -- -- -- - — <br /> 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 718 1811 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 46 -- <br /> 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 0 599 — <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 7 55 1774 <50 — <0 50 <0 50 <0 50 <0 50 41 — <br /> 04/30/2003 P 2529 7 04 1825 <50 -- <050 <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 <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 /> 07/30/2004 P 2529 768 1761 <50 — <0 50 <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 /> 01/31/2005 P 2529 717 1812 <50 — <0 50 <0 50 <0 50 <0 50 24 -- <br /> AMW-4 8/10/1990 — 2536 483 2053 ND<50 -- 06 07 29 4 2 -- — <br /> 8/27/1990 -- 2536 483 2053 — — — — — — — — <br /> 11/2/1990 — 2536 4 89 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 4 08 2128 ND<50 — ND<0 3 ND<0 3 ND<0 3 ND<0 3 -- — <br /> Report Date A nI 8,2005 Page 5 of 27 <br /> P P 8 <br />