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f i � <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) (pg/L) (pg/L) (pglL) (pg/L) (pg/L) (pg/L) (1191L) (mglL) Comments <br /> MW-7 4/12/2001 — 2650 695 1955 -- <br /> 5/23/2001 — 26 50 694 :j 9 56 320 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 426 - <br /> 7/31/2001 — 2650 723 19 27 680 ND<0 5 ND<0 5 ND<0 5 ND<1 5 959 -- <br /> 10/30/2001 — 2650 716 i 934 200 -- ND-10 5 ND<0 5 ND<0 5 ND<1 5 227 — <br /> 1/29/2D02 6 63 19 87 140 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 171 -- <br /> 4/30/2002 — 2650 6 87 1963 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 NNO 5 _ <br /> 7/30/2002 P 2650 7 13 1937 59 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 754 <br /> 10/31/2002 P 26 5D 7 00 19 50 86 ND<0 5 ND<0 5 ND<0 5 ND<0 5 210 - <br /> 01/30/2003 P 2650 706 1944 <500 UJ -- 15 0 UJ <5 0 UJ <5 0 UJ <5 0 UJ 310 J — <br /> 04/30/2003 P 2650 673 19 77 <50 -- <0 50 <0 50 <0 50 <0 50 53 -- <br /> 07/30/2003 P26 50 712 1938 <50 -- <0 50 <0 50 —<050 —<050 17 — <br /> 10/29/2003 P 2650 718 1932 <50 — <0 50 <050 <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 19 27 <50 — <0 50 <0 50 —<050 <0 50 30 -- Water Level data from <br /> 4127104 <br /> 07/30/2004 P 26 50 7 Si 18 99 <50 — <0 50 <0 50 <0 50 <0 50 23 -- <br /> 10/28/2004 P 26 50 714 19 36 <50 -- <0 50 <0 50 <0 50 <0 50 21 — <br /> 01/31120051 P 1 26 50J 650 2000 <50 — <0 50 <0 50 <0 50 <0 50 20 — <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 - 2566 6 08 <br /> 3/23/1988 -- 2566 600 1966 150,000 280 210 -- 3 000 <br /> 617/1988 — 2566 6 20 1946 — — _ — <br /> 10/18/1988 -- 25 66 6 53 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 — 25 6fi ---&--93 19 73 — -- _ _ <br /> 7/12/1990 -- 1 2566 598 1968 1,100 — 27 13 360 1,000 — <br /> 8/27/1990 -- 25 66 627 1939 -- — — __ -- <br /> 11/2/1990 <br /> 11/2/1990 — 2566 635 1931 -- _ _ __ <br /> -- <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 — 25 66 638 19 28 3,100 — 73 ND<0 5 140 330 — <br /> Report Date April 8,2005 Page 24 of 27 <br />