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• • i <br /> 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 P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pglL) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-8 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 608 1958 -- — -- — _ — _ ~ <br /> 3/23/1988 -- 2566 600 1966 150 000 — 280 210 -- 3,000 — — <br /> 6f7/1988 — 2566 620 1946 -- — — — -- — <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 -- — -- -- -- ~ ~ -- <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<0 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 /> 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 19 52 75 — ND<0 5 ND<0 5 15 52 -- -- <br /> 3/10/1993 — — — -- ND<50 -- 16 ND<0 5 ND<0 5 15 — -- QC-1 <br /> 3/10/1993 — 2566 567 1999 ND<50 -- 14 ND<0 5 07 22 -- - <br /> 6/16/1993 — 2566 591 1975 -- — — — -- -- — <br /> 10/22/1993 -- 2566 629 1937 - -- — —1/2411994 -- 2566 594 1972 - -- — — <br /> 6/7/1994 -- — — -- ND<50 - ND<0 5 N0<0 5 ND<0 5 ND<0 5 955 — QC-1 <br /> 6/7/1994 -- 2566 639 1927 ND<50 - ND<O 5 ND<0 5 ND<0 5 ND<0 5 91 34 <br /> 9/13/1994 -- 2566 678 1888 — — — -- -- — — ~ <br /> 1/10/1995 -- 2566 -- — — -- - — -- ~ - <br /> 3/23/1995 — 2566 - -- -- — — -- -- -- — -- <br /> 1/4/1996 -- 2566 -- -- — — -- _ _ ~ _ <br /> 3/29/1996 — 2566 573 1993 550 — 24 N0<1 59 NNII 13 34 <br /> 7/1/1996 - 2566 1 6 29 1937 <br /> Report Date July 13,2004 Page 23 of 25 <br />