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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11194 <br /> 2375 Tracy Blvd, Tracy CA <br /> Top of Depth to Water Level Ethyl. Total <br /> Well Date PI Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pg/L) M/L) (pg/L) (pg/L) WIL) (pglL) WIL) (mg/L) Comments <br /> MW-7 01/26/2004 P 2650 688 1962 <50 -- <2 5 <2 5 <2 5 <2 5 77 -- <br /> MW-8 9/21/1987 — -- - 2,200 — 32 3 — 480 -- — <br /> 10/20/1987 -- — — - 3 800 - 20 5 — 210 — -- <br /> 11/20/1987 — -- — 140 — ND<0 5 ND<0 5 -- 16 — - <br /> 3/13/1988 -- 25 66 608 1958 -- — -- — — -- <br /> 3/23/1988 -- 2566 600 1966 150,000 -- 280 210 — 3,000 — ~ <br /> 617/1988 - 1 2566 620 1946 — — — -- -' — -- <br /> 10/1811988 -- 2566 653 1913 3,400 — 28 ND<0 5 ND<0 5 630 — ~ <br /> 2/15/1990 — 2566 655 1911 ND<50 — N0<0 3 ND<0 3 ND<0 3 ND<0 3 -- — <br /> 4/26/1990 -- 25 66 593 1973 -- — -- -- -- -- -- — <br /> 7/12/1990 -- 2566 598 1968 1,100 — 27 13 360 1,000 — -- <br /> 8127l1990 — 2566 627 1939 <br /> 11/2/1990 -- 2566 635 1931 — — — - -- ~ <br /> 11!5/9990 25 66 6 38 19 28 2,20D — 23 7 130 340 — - <br /> 2/25/1991 — 2566 553 2013 8,100 — 20 21 150 240 -- <br /> 6/27/1991 — 2566 638 1928 3,100 — 73 ND<0 5 140 330 -- <br /> 9/25/1991 -- 2566 681 1885 6 300 -- 13 41 190 250 — -- <br /> 12/10/1991 — 2566 625 1941 3,600 — 75 24 90 120 -- - <br /> 3/25/1992 -- 2566 576 1990 1,400 19 66 140 230 — — <br /> 6/25/1992 - 2566 706 1860 120 — ND<0 3 051 ND<0 3 05 - <br /> 12/8/1992 -- — — — 51 -- ND<0 5 ND<0 5 09 34 — QC-1 <br /> 12/8/1992 — 2566 1 614 1952 75 — ND<0 5 ND<0 5 15 52 — -- <br /> 3/10/1993 — — _ ~ ND<50 -- 16 ND<0 5 ND<0 5 15 -- - QC-1 <br /> 3/10/1993 - <br /> 2566 567 1999 ND<50 -- 14 ND<0 5 07 22 - <br /> 6/16/1993 — 2566 591 1975 -- — -- — -- — -- — <br /> 10/22/1993 - 2566 629 1937 — — — — -- — -- " <br /> 1/24/1994 — 2566 594 1972 <br /> 6/7/1994 -- -- — — ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 955 -- QC-1 <br /> 6/7/1994 -- 2566 639 1927 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 91 34 <br /> 9/13/1994 2566 678 1888 - — — _ - -- — <br /> 1110/1995 — 2566 — — — -- -- — ~ <br /> 3/23/1995 2566 <br /> 1/4/1996 -- 2566 -- — — -- — -- _ — ~ <br /> Repan Date Apr!!28,2004 Page 22 of 24 <br /> f <br />