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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 /> 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 mst) (pg/L) {FnJB-) (pglL) (pglL) (pg/L) (pg/L) (pg/L) (mg1L) Comments <br /> MW-7 9/93/1994 — 2650 753 1897 - - -- — -- _ <br /> 1/90/1995 -- 2650 622 2028 -- — — — — - - -- <br /> 3/23/1995 — 2650 616 2034 ND<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 89 <br /> 10/4/1995 - 2650 7 31 1919 — - -- -- - -- -- <br /> 1/4/1996 - 2650 685 1965 -- - -- -- -- - — <br /> 3/29/1996 -- 2650 649 2001 ND<50 — ND<0 5 ND<1 ND<1 ND<1 ND<10 3 9 <br /> 7/1/1996 2650 704 1946 _ _ _ _ _ _ _ <br /> 10/15/1996 -- 2650 727 1923 <br /> 4/16/1997 -- 2650 585 2065 — — -- -- -- — <br /> 10/15/1997 - 2650 727 1923 - -- -- -- -- -- -- <br /> 3/17/1998 2650 659 1991 <br /> 1/6/1999 -- 2650 698 1952 - — -- — - -- w <br /> 1/19/2000 - 2650 680 1970 -- - — — — <br /> 4/1212000 -- 2650 693 1957 - - - -- - <br /> 7/22/2000 - 2650 699 1951 -- - -- -- — -- <br /> 10/26/2000 -- 2650 694 1956 1,300 -- N0<0 5 ND<0 5 ND<0 5 ND<0 5 8 600 -- <br /> 1/17/2001 -- 2650 -- — — -- - — — -- — — <br /> 4/1212001 -- 2650 695 1955 — -- - - -- _ _ _ <br /> 5/23/2001 -- 2650 694 1956 320 ND<0 5 ND<0 5 ND<0 5 ND<1 5 426 <br /> 7/31/2001 2650 723 1927 680 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 959 -- <br /> 10/30/2001 -- 2650 716 1934 200 ND<0 5 ND<0 5 ND<0 5 ND<l 5 227 -- <br /> 1/29/2002 26 50 663 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 26 50 713 1937 59 ND<0 5 ND<0 5 ND<0 5 ND<1 0 754 -- <br /> 10/31/2002 P 2650 700 1950 86 - ND<0 5 ND<0 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 <0 50 17 — <br /> 10/29/2003 P 2650 718 1932 <50 <0 50 <0 50 <0 50 <0 50 14 <br /> 01/26/2004 P 2650 688 1962 <50 - <25 <2 5 <25 <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 /> 4127104 <br /> MW-8 9/21/1987 — - -- - 2,200 — 32 3 — 480 — — <br /> Report Date July 13, 2004 Page 22 of 25 <br />