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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 mst) (erg/L) (pg/L) (pg/L) (erg/L) (pg/L) (pg1L) (ug/L) (mg/L) Comments <br /> MW-7 7125/1991 -- 2650 630 2020 ND<50 — N0<0 3 ND<O 3 ND<O 3 ND<O 3 — -- <br /> 6/27/1991 2660 714 1936 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 — <br /> 9/25/1991 -- 2650 850 1800 ND<30 - ND<O 30 ND<O 30 ND<O 30 ND<O 30 — -- <br /> 12/10/1991 2650 698 1952 ND<30 -- ND<O 30 ND<O 30 ND<O 30 N0<0 30 -- — <br /> 3/25/1992 — 2650 653 1997 ND<30 -- ND<O 30 ND<O 30 ND<O 30 ND<O 30 — — <br /> 6/25/1992 -- 2650 813 1837 ND<30 — ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- -- <br /> 12/8/1992 2650 689 19 61 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 — -- <br /> 3/10/1993 — 2650 654 1996 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — <br /> 6/16/1993 -- 2650 643 2007 -- — — — -- — <br /> 10/22/1993 -- 2650 6 97 1953 -- — — — — — -1/2411994 -- 2650 683 1967 - — — — — -- -- <br /> 6/7/1994 2650 729 1921 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 34 <br /> 9/13/1994 - 2650 753 1897 - -- — — -- — -- -- <br /> 1/'10/1995 — 2650 622 2028 — — — — — — — <br /> 3/23/1995 -- 2650 616 2034 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 89 <br /> 10/4/1995 -- 2650 731 1919 — - -- -- __ .. _ — <br /> 1/4/1996 2650 685 1965 <br /> 3/29/1996 — 2650 649 2001 ND<50 -- ND<O 5 N0<1 ND<1 ND<1 ND<10 39 <br /> 7/1/1996 -- 2650 704 1946 — - — — — — -- <br /> 10/15/1996 - 2650 727 1923 - -- -- -- -- -- -- <br /> 4/16/1997 — 2650 585 2065 — -- — -- -- -- -- — <br /> 10/15/1997 — 2650 727 1923 <br /> 3/17/1998 2650 659 1991 — -- -- -- — — <br /> 1/6/1999 - 2650 698 1952 - — -- -- — -- — -- <br /> 1/19/2000 — 2650 680 1970 - <br /> 4/12/2000 — 2650 693 1957 -- -- — - - — — <br /> 7/22/2000 — 2650 699 1951 -- - — -- — - — -- <br /> 10/26/2000 -- 2650 694 1956 1,300 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 8,600 -- <br /> 1/17/2001 -- 2650 -- -- -- <br /> 4/12/2001 2650 695 1955 — — -- -- — -- <br /> 5/23/2001 — 2650 694 1956 320 ND<0 5 ND<O 5 N0<0 5 ND<1 5 426 -- <br /> 7/31/2001 - 26 50 723 1927 680 -- ND<O 5 ND<O 5 ND<O 5 ND<1 5 959 -- <br /> 10130/2001 - 2650 1 716 1 19 34 1 200 — ND<0 5 ND<O 5 ND<0 5 ND<1 5 227 -- <br /> Report nate October 13,2005 Page 24 of 28 <br />