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i • i <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11194 <br /> 2375 Tracy Blvd, Tracy CA <br /> Top of Depth to Water Level Ethyl- Total <br /> Well Date P/ Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) WIL) (Frg1L) (pg/L) (pg/L) (pg1L) (pglL) (pg/L) (mg1L) Comments <br /> MW-7 6/16/1993 -- 265 643 2007 — -- — - - <br /> 10/22/1993 — 265 697 1953 — - — - — -- <br /> 1/24/1994 — 265 683 1967 - <br /> 6/7/1994 — 265 729 1921 ND<50 — N0<0 5 ND<0 5 ND<0 5 ;ND<105 ND<5 0 34 <br /> 9/13/1994 — 265 753 1897 -- — — ~ ~ <br /> 1/1011995 — 265 622 2028 - - -- — — — <br /> 3/23/1995 - 265 616 2034 N0<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 0 - 89 <br /> 10/4/1995 - 265 731 1919 — - - ~ - — <br /> 1/4/1996 — 265 685 1965 — — — ~ - ~ -- <br /> 3/29/1996 -- 265 649 2001 ND<50 ND<0 5 ND<1 ND<1 ND<1 ND<10 39 <br /> 7/1/1996 265 704 1946 — -- — -- ~ — -- <br /> 10/15/1996 -- 26 5 727 1923 -- — -- — - — — <br /> 4/16/1997 — 265 585 2065 - <br /> 10/15/1997 — 265 727 1923 <br /> 3/17/1998 -- 265 659 1991 — — — - — — <br /> P1/6/1999 — 265 698 1952 -- <br /> 1/19/2000 -- 265 680 1970 — — -- — — — <br /> 4/12/2000 -- 26 5 693 1957 -- — -- — - — — <br /> 7/22/2000 — 265 699 1951 -- -- — -- - — ~ <br /> 10/26/2000 -- 265 694 1956 1,300 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 8,600 -- <br /> 1/17/2001 -- 265 — -- -- - — _ — — <br /> 4/12/2001 265 695 1955 — — -- — — ~ — — <br /> 5/23/2001 — 265 694 1956 320 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 426 -- <br /> 7131/2001 — 265 723 1927 680 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 959 - <br /> 10/30/2001 — 265 716 1934 200 — ND<0 5 ND<0 5 ND<0 5 N0<1 5 227 <br /> 1/29/2002 -- 2fi 5 663 1987 140 -- ND<0 5 ND<0 5 ND<0 5 ND<1 0 171 <br /> 4/30/2002 -- 265 687 1963 ND<50 -- N0<0 5 ND<0 5 ND<0 5 ND<1 0 ND<0 5 — <br /> 7/30/2002 P 265 713 1937 59 — ND<0 5 ND<0 5 ND<0 5 ND<1 0 754 -- <br /> 10/31/2002 P 265 700 1950 86 — ND<0 5 ND<0 5 ND<0 5 NO<0 5 210 — <br /> 01/3012003 P 2650 706 1944 <500 UJ — <5 0 UJ <5 0 UJ <50 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 /> Report Date April 28,2004 Page 21 of 24 <br />