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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) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-7 2/25/1991 — 2650 630 2020 ND<50 — ND<0 3 ND<0 3 ND<0 3 ND<0 3 — <br /> 6/27/1991 -- 2650 714 1936 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 9125l1991 — 2650 850 1800 ND<30 - ND<0 30 ND<0 30 ND<0 30 ND<0 30 — — <br /> 12/10/1991 — 2650 698 1952 ND<30 -- ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- — <br /> 3/25/1992 -- 2650 653 1997 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 — — <br /> 6/25/1992 -- 2650 813 1837 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- -- <br /> 12/8/1992 — 2650 689 1961 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- — <br /> 3/10/1993 — 2650 654 1996 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 — — <br /> 6/16/1993 — 2650 643 2007 -- — — — -- -. _ <br /> 10/22/1993 -- 2650 697 1953 -- -- — -- -- _ _ <br /> 1/24/1994 — 2650 683 1967 — — — -- _ _ _ — <br /> 6/7/1994 — 2650 729 1921 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 34 <br /> X9113/1994 — 1 2650 753 1897 — — — — _ — <br /> 1/10/1995 — 2650 622 2028 — — — - -- — _ — <br /> 3/23/1995 — 2650 616 2034 ND<50 - ND<0 50 ND<0 50 ND<0 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<0 5 ND<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 685 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<0 5 ND<0 5 ND<0 5 ND<0 5 8,600 — <br /> 1/17/2001 -- 2650 -- -- -- <br /> 4/12/2001 -- 2650 695 1955 — -- — -- — -- _ <br /> 5/23/2001 — 2650 1 694 1956 320 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 426 — <br /> 7/31/2001 -- 26 50 723 1927 680 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 959 — <br /> 10/30/2001 — 2650 716 1934 200 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 227 — <br /> Report Date September 10, 2004 Page 22 of 26 <br />