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• i s <br /> 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) (pg1L) (pg/L) (pg/L) (pg/L) (jvg/L) (pglL) (pg1L) (mg/L) Comments <br /> AMW-6 04/29/2005 P 2668 439 2229 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 07/29/2005 P 2668 514 2154 <50 -- <0 5o <0 50 <0 50 <0 50 080 -- <br /> MW-1 2!9/1987 -- — -- -- ND<50 - ND<0 5 ND<O 5 -- ND<O 5 -- - <br /> 9/21/1987 -- -- — ND<50 ND<O 5 ND<O 5 -- ND<O 5 — -- <br /> 10/20/1987 -- -- -- — ND<50 - ND<0 5 N0<O 5 — ND<O 5 -- -- <br /> 11/20/1987 - -- -- -- ND<50 — ND<0 5 ND<O 5 — ND<O 5 - — <br /> 3/13/1988 -- 2688 588 21 00 - — -- -- - -- <br /> 3123/1988 - 2688 5 88 2100 ND<50 -- ND<O 5 ND<O 5 — ND<O 5 -- <br /> 6l711988 2688 595 2093 -- - -- — — - -- <br /> 10/18/1988 -- 2688 625 2063 ND<50 - ND<0 5 ND<O 5 ND<O 5 ND<O 5 — -- <br /> 2/15/1990 -- 2688 595 2093 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 -- -- <br /> 4/26/1990 -- 2688 608 2080 -- -- -- -- -- -- -- -- <br /> 7/12/1990 -- 2688 611 2077 ND<50 — ND<O 3 ND<O 3 ND<O 3 ND<O 3 -- — <br /> 8/27/1990 -- 2688 545 2143 - <br /> 11/211990 — 2688 651 2037 <br /> 11/5/1990 -- 2688 653 2035 ND<50 — N0<0 3 ND<0 3 ND<0 3 ND<O 3 — — <br /> 2/25/1991 — 2688 575 2113 ND<50 -- ND<0 3 ND<O 3 ND<O 3 ND<O 3 -- -- <br /> 6/27/1991 — 2688 666 2022 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<0 5 -- - <br /> 9/25/1991 -- 2688 704 1984 ND<30 — ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- -- <br /> 12/10/1991 -- 2688 646 2042 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- -- <br /> 3/25/1992 -- 2688 5 95 2093 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 <br /> 6/25/1992 2688 802 18 86 ND<30 - ND<O 30 ND<O 30 ND Q 30 ND<O 30 — - <br /> 12/8/1992 2688 644 2044 ND<50 -- ND<O 5 ND<0 5 ND<O 5 ND<0 5 - <br /> 3/10/1993 -- 2688 601 2087 ND<50 — ND<O 5 ND<O 5 N0<0 5 ND<O 5 — — <br /> 6/16/1993 -- 2688 5 67 2121 — - — -- -- — — <br /> 10/22/1993 2688 649 2039 - - — — — — — <br /> 1/24/1994 -- 2688 6 38 2050 — — -- -- -- -- -- -- <br /> 6/7/1994 - 2688 684 2004 ND<50 -- ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 34 <br /> 9/13/1994 t 2688 713 1975 <br /> 1/10/1995 2688 5 93 2095 -- -- - -- — <br /> 3/23/1995 -- 2688 568 2120 ND<50 — ND<0 50 ND<O 50 ND<O 50 ND<1 0 -- 97 <br /> 10/4/1995 -- 2688 696 1992 -- — <br /> 1/4/1996 -- 2688 624 2064 -- -- - -- -- -- <br /> Report Date October 13,2005 Page 11 of 28 <br />