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Y <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> I <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> i <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (ErgIL) (pglL) (pg/L) (ugll-) (pg/L) (pg/L) (mg/L) Comments <br /> MW-7 1/29/2002 — 2650 663 1987 140 — ND<O 5 ND<0 5 N0<0 5 ND<1 0 971 <br /> 4/30/2002 — 2650 687 1963 ND<50 — ND<O 5 ND<0 5 ND<O 5 ND<1 0 ND<O 5 — <br /> 7/30/2002 P 2650 713 1937 59 — ND<O 5 ND<O 5 ND<O 5 ND<1 0 754 — <br /> 10/31/2002 P 1 2650 700 1950 86 ND<0 5 ND<O 5 ND<O 5 ND<0 5 210 -- <br /> 01/30/2003 P 2650 706 1944 <500 UJ - <5 0 UJ <5 0 UJ <5 0 UJ <5 0 UJ 310 J - <br /> 04/3012003 P 2650 673 1977 <50 — <0 50 <0 50 <0 50 <0 50 53 — <br /> 07/30/2003 P 2650 712 1938 <50 — <0 50 <0 50 <0 50 <0 50 17 -- <br /> 10/29/2003 P 2650 718 1932 <50 <0 50 <O 50 <0 50 <0 50 14 — <br /> 01/26/2004 P 2650 688 1962 <50 - <25 <2 5 <2 5 <2 5 77 -- <br /> 04/28/2004 P 2650 723 1927 <50 - <0 50 <0 50 -r <0 50 <0 50 30 -- Water Level data from <br /> 4/27104 <br /> 07/30/2004 P 26 50 751 1899 <50 — <0 50 <0 50 <0 50 <0 50 23 — <br /> 10/28/2004 P 2650 714 1936 <50 -- <0 50 <0 50 <0 50 <0 50 21 — <br /> 01/31/2005 P 2650 650 2000 <50 — <0 50 <0 50 <0 50 <0 50 20 — <br /> 04/29120051 P 1 26550 1 685 1965 1 <50 -- <0 50 <0 50 <0 50 <0 50 70 — <br /> 07/29120051 P 1 2650 1 721 1929 1 <50 -- <0 50 <0 50 <0 5o <050 j 29 <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<O 5 ND<0 5 — 16 - -- <br /> 3/13/1988 -- 2566 608 1958 — — -- -- -- -- — <br /> 3/23/1988 -- 25 66 600 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<O 5 630 — — <br /> 2/15/1990 — 2566 655 1911 ND<50 -- ND<0 3 ND<O 3 ND<O 3 ND<O 3 -- — <br /> 4/26/1990 -- 2566 593 1973 — -- -- — -- — <br /> 7/12/1990 -- 2566 598 1968 1 100 -- 27 13 360 1,000 -- -- <br /> 8/27/1990 -- 2566 627 1939 -- -- -- — — — <br /> 11/211990 -- 25 66 635 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 681 1885 6,300 -- 13 41 190 250 -- -- <br /> 12/10/1991 - 2566 625 1941 3,600 -- 75 24 90 120 — — <br /> Report Date October 13,2005 Page 25 of 28 <br />