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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 /> TO 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 msi) (,WgrL) (pglL) WIL) (pgll-) (pg/L) (pg1L) MIL) (mg/L) Comments <br /> -- N < ND<2 5 ND<2 5 ND<2 5 ND<5 0 763 <br /> — <br /> AMW-6 4/30/2002 26 68 4 71 21 97 D 250 — <br /> 7/30/2002 P 2668 472 2196 ND<500 — ND<5 ND<5 ND<5 ND<10 465 — <br /> 10/31/2002 P 2668 440 2228 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 19 — <br /> 01/3012003 P 2668 930 1738 <50 — <0 50 <0 50 <0 50 <0 50 41 32 <br /> 04/30/2003 P 2668 4 76 2192 <50 — <0 50 <0 50 <0 50 <0 50 23 — <br /> 07/30/2003 P 2668 520 2148 260 R — 16 <25 <2 5 <2 5 16 — <br /> 10/29/2003 P 2668 449 2211 <50 — <0 50 <0 50 <0 50 <0 50 27 - <br /> 01/26/2004 P 2668 4 88 2180 <50 — <0 50 <0 50 <0 50 <0 50 16 — <br /> 04/27/2004 P 2668 472 2196 <50 -- <0 50 <0 50 <0 50 43 093 -- <br /> 07/30/2004 P 2668 521 2147 <50 -- <050 <0 50 <0 50 <0 50 057 - <br /> 10I28/2004 P 2668 4 88 2180 <50 — <050 <0 50 <0 50 <0 50 069 — <br /> MW-1 2/9/1987 -- — — — ND<50 — ND<O 5 ND<O 5 — ND<O 5 — — <br /> 9/21/1987 — — — — ND<50 — ND<0 5 ND<O 5 — ND<0 5 -- -- <br /> 10/20/1987 — -- — — ND<50 ND<0 5 ND<0 5 — ND<0 5 <br /> 11/20/1987 — -- — — ND<50 — ND<0 5 ND<O 5 -- ND<O 5 — -- <br /> 3/13/1988 - 2688 588 2100 1 -- -- — I — -- — — <br /> 3/23/1988 — 2688 588 2100 ND<50 -- ND<O 5 ND<O 5 — ND<O 5 — — <br /> 6/7/1988 — 2688 595 2093 - — — — -- — -- <br /> 10/18/1988 — 2688 625 2063 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- - <br /> 2/15/1990 — 2688 595 2093 ND<50 — ND<0 3 ND<O 3 ND<O 3 ND<0 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 /> 11/2/1990 — 2688 651 2037 -- — — - — -- — — <br /> 11/5/1990 — 2688 653 2035 ND<50 -- ND<O 3 ND<O 3 ND<O 3 ND<O 3 -- — <br /> 2/25/1991 -- 26 88 575 21 13 ND<50 — ND<O 3 ND<O 3 ND<O 3 ND<O 3 — -- <br /> 6/27/1991 — 26 88 666 2022 ND<50 _ ND<O 5 ND<O 5 ND<0 5 ND<O 5 — — <br /> 9/25/1991 -- 2688 704 1984 ND<30 — N0<0 30 N0<0 30 ND<0 30 ND<O 30 —12/10119911 — 2688 646 2042 1 ND<30 — ND<0 30 ND<O 30 ND<0 30 ND<O 30 — — <br /> 3/25/1992 — 2688 595 2093 ND<30 — ND<0 30 ND<O 30 ND<0 30 ND<0 30 -- — <br /> 6/25/1992 — 2688 802 1886 ND<30 — ND<O 30 ND<O 30 ND<0 30 ND<O 30 -- -- <br /> 12/8/1992 — 2688 644 2044 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 <br /> 3/10/1993 -- 2688 601 2087 ND<50 — ND<O 5 ND<0 5 ND<O 5 ND<O 5 <br /> Report Date December 16,2004 Page 10 of 26 <br />