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• • s <br /> 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) (pgll-) (pg/L) M/L) (Ug1L) (pg/L) (uglL) (P91L) (mg/L) Comments <br /> MW-7 1/29/2002 — 2650 663 1987 140 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 171 — <br /> 4/30/2002 -- 2650 687 1963 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 <br /> 7/30/2002 P 2650 713 1937 59 — ND<0 5 ND<0 5 ND<0 5 N0<1 0 754 — <br /> 10/31/2002 P 2650 700 1950 86 — ND<0 5 ND<O 5 ND<0 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 /> 04/30/2003 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 <050 17 — <br /> 10/29/2003 P 2650 718 1932 <50 — <050 <0 50 <0 50 <0 50 14 — <br /> 01/26/2004 P 2650 688 1962 <50 — <25 <25 <2 5 <2 5 77 -- <br /> 04/28/2004 P 2650 723 1927 <50 — <0 50 <0 50 <0 50 <0 50 30 — Water Level data from <br /> 4/27104 <br /> 07!3012004 P 2650 751 1899 <50 -- <0 50 <0 50 <0 50 <0 5o 23 -- <br /> MW-8 9/21/1987 — — -- -- 2,200 — 32 3 -- 480 -- <br /> 10/20/1987 — — 3,800 — 20 5 210 — r <br /> 11/20/1987 — _ 140 ND<0 5 N0<0 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 /> I <br /> 10/18/1988 -- 2566 653 1913 3 400 -- 28 ND<0 5 ND<0 5 630 — — <br /> 2/15/1990 -- 2566 655 1911 ND<50 - ND<0 3 ND<0 3 ND<0 3 ND<0 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 — — -- -- -- -- --11/211990 -- 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<0 5 140 330 -- — <br /> 9/25/1991 -- 2566 681 1885 6,300 -- '13 41 190 250 -- — <br /> 12J10/1991 — 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 0 5 -- — <br /> 12/8/1992 — — — — 51 — ND<0 5 ND<0 5 09 34 — -- QC-1 <br /> 12/8/1992 — 2566 614 1952 75 — ND<0 5 ND<0 5 15 52 — — <br /> Report Date September 10,2004 Page 23 of 26 <br />