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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) WWL) (mg/L) (jg/L) (pg/L) (Ug/L) 04L) (pg/L) (mglL) Comments <br /> AMW-2 7/30/2002 P 2645 545 21 00 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 <br /> 10/31/2002 P 2645 543 2102 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 5 <br /> 01/30/2003 P 2645 511 2134 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 04/30/2003 P 2645 491 2154 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 07/30/2003 P 2645 568 2077 <50 <050 <0 50 <0 50 <0 50 <0 50 <br /> 10/29/2003 P 2645 559 2086 <50 <050 <0 50 <0 50 <0 50 <0 50 <br /> 01/26/2004 P 1 2645 506 21 39 <50 <0 50 <050 1 <0 50 <0 50 <050 <br /> 04/27/2004 P 2645 544 2101 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 07/30/2004 P 2645 574 2071 <50 - <0 50 <050 <0 50 <0 50 <0 50 <br /> 10/28/2004 2645 505 21 40 -- - -- - -- - Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 2645 474 2171 Sampled Annually 3rd <br /> Quarter <br /> 04/29/2005 2645 522 2123 -- - - -- - - Sampled Annually 3rd <br /> Quarter <br /> 07/29/2005 P 2645 565 2080 <50 <050 1 <0 50 1 <0 50 <0 50 <0 50 <br /> 10/28/2005 — 2645 553 2092 -- — — -- -- -- — — Sampled Annually 3rd <br /> Quarter <br /> AMW-3 8/10/1990 2529 746 1783 90 0 6 41 2 8 21 <br /> 8/27/1990 2529 746 1783 - <br /> 11/2/1990 2529 - -- - - - <br /> 11/5/1990 2529 758 1771 ND<50 ND<0 3 ND<0 3 ND<0 3 ND<0 3 <br /> 2/25/1991 2529 703 1826 ND<50 ND<0 3 ND<0 3 ND<0 3 ND<0 3 <br /> 6/27/1991 2529 760 1769 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> 9/25/1991 2529 792 1737 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 <br /> 12/10/1991 2529 756 1773 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 <br /> 3/25/1992 2529 716 1813 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 <br /> 6/25/1992 2529 805 1724 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 <br /> 12/8/1992 2529 737 1792 ND<50 ND<Q 5 ND<0 5 ND<0 5 ND<0 5 -- <br /> 3/10/1993 2529 709 1820 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 <br /> 6/16/1993 - 2529 721 1808 - - - <br /> 10/22/1993 25 29 744 1785 <br /> 1/24/1994 2529 722 1807 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 - <br /> 6/7/1994 2529 770 1759 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 34 <br /> Report Date December 1,2005 Page 4 of 29 <br />