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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 msl) (pglL) (pg1L) (pg/L) W/O (pg/L) (pglL) (pglL) (mglL) Comments <br /> MW-7 01/31/2005 P 2650 650 2000 <50 — <0 50 <0 50 <0 50 <0 50 20 <br /> 04/2912005 P 2650 685 1965 <50 ., <0 50 <0 50 <0 50 <0 50 7 0 -- <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<O 5 -- 16 — — <br /> 3/13/1988 — 2566 608 1958 — — — -- -- -- .. <br /> 3/23/1988 — 2566 600 1966 150,000 - 280 210 - 3,000 — <br /> 6/7/1988 — 2566 ....620 1946 — - — <br /> 10/18/1988 — 2566 653 1913 3,400 — 28 ND<O 5 ND<0 5 630 — — <br /> 2/15/1990 — 2566 655 1911 ND<50 -- ND<O 3 ND<O 3 ND<O 3 ND<O 3 — — <br /> 4/26/1990 — 25 66 593 1973 — — — — — — <br /> 7/12/1990 -- 25 66 598 1968 1,100 — 27 13 360 1,000 — - <br /> 8/27/1990 -- 2566 627 1939 -- — — — _ _ <br /> 11/2/1990 — 2566 635 1931 — — — — _ _ <br /> 11/5!1990 -- 2566 638 1928 2,200 — 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<O 5 140 330 — <br /> 9/25/1991 — 2566 6 81 1885 6,300 — 13 41 190 250 — -- <br /> 12/10/1991 — 2566 625 1941 3,600 — 75 24 90 120 — -- <br /> 3/25/1992 — 25 66 576 1990 1,400 — 19 66 140 230 — -- <br /> 6/25/1992 -- 2566 7 06 1860 120 — ND<0 3 051 ND<O 3 0 5 -- — <br /> 12/8/1992 — — — — 51 — ND<0 5 ND<O 5 09 34 — — QC-1 <br /> 12/8/1992 -- 1 2566 614 1952 75 — ND<O 5 ND<O 5 15 52 — — <br /> 3/10/1993 — — — — ND<50 — 16 ND<0 5 ND<0 5 1 5 -- — QGi <br /> 3/10/1993 — 2566 567 1999 ND<50 — 14 ND<O 5 07 22 — — <br /> 6/16/1993 — 2566 5 91 1975 — -- — — — -- -. <br /> 10/22/1993 — 25 66 629 1937 - <br /> 1/24/1994 — 2566 594 1972 — — - -- — -- — _. <br /> 6/7/1994 -- — — — ND<50 — ND<0 5 ND<O 5 ND<0 5 ND<0 5 955 -- QC-1 <br /> 6/7/1994 -- 2566 639 1927 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 91 34 <br /> 9/13/1994 -- 2566 678 1888 <br /> 1110/1995 — 256 -- — <br /> 312311995 — 2566 -- — -- — <br /> Report Date June 21,2005 Page 25 of 28 <br />