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Table 1 <br /> i <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 PI Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pg1L) (pg1L) (pg1L) (pglL) (pglL) (pg1L) (lrglt-) (mg1L) Comments <br /> MW-1 7/12/1990 - 2688 611 2077 ND<50 — ND<0 3 ND<0 3 ND<0 3 ND<0 3 — <br /> 8/27/1990 -- 2688 545 21 43 <br /> 11/2/1990 -- 2688 6 51 2037 - — - — — — — <br /> 11/5/1990 26 88 6 53 2035 ND<50 ND<0 3 NR<0 3 ND<0 3 ND<4 3 - — <br /> 2/25/1991 — 2688 575 2113 ND<50 -- ND<4 3 ND<D 3 ND<0 3 ND<0 3 — - <br /> 6l2711991 2688 666 20 22 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- -- <br /> 9/25/1991 2688 704 1984 ND<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- ~ <br /> 12/10/1991 -- 2688 646 2042 ND<30 - ND<0 30 ND<0 30 ND<0 30 N0<0 30 — — <br /> 3125I1992 - 26$8 5 95 2D 93 N0<30 — ND<0 30 ND<0 30 ND<0 30 ND<0 30 -- ~ <br /> 6/25/1992 -- 26 88 8 02 18 86 ND<30 ND<0 30 N0<0 34 N0<0 30 ND<0 30 - <br /> 12/8/1992 — 2fi 88 6 44 20 44 ND<50 ND<0 5 ND<0 5 ND<0 5 ND 5 — -- <br /> 3/10/1993 — 2688 601 2087 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 — - <br /> 6/16/1993 — 2688 567 2121 <br /> 101221-1993 — 26 88 6 49 2039 <br /> 1/24/1994 -- 26 88 638 2050 -- <br /> 6/7/1994 -- 26 88 684 20 04 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 34 <br /> 9/13/1994 -- 2688 713 19 75 <br /> -111011995 26$8 593 2095 <br /> 3/23/1995 — 268 L5 68 21 20 NR<50 — ND<0 50 ND<0 50 ND<0 50 ND<1 D -- 9 7 <br /> 10/4/1995 - 26 88 6 96 19 92 — -- -- ~ - — - <br /> 114/1996 — 26 88 6 24 20 64 <br /> 3/29/1996 - 2688 605 2083 ND<50 — ND<0 5 ND<1 ND<1 ND<i ND<10 38 <br /> 7/1/1996 2688 661 20 27 <br /> 10/1511996 - 2688 680 2008 <br /> 4/16/1997 — 26 88 5 40 21 48 <br /> 10/15/1997E- 26 675 20133/17/1998 634 20541161-1999 6 52 20369/13/19991/19/2000 622 20 66 — — -- "" — — - <br /> 4/12/2000 -- 2688 629 2059 <br /> 7/22/2000 — 2688 660 20 28 - -- — — <br /> 10/26/2000 -- 2688 625 2063 <br /> Page 10 of 24 <br /> Report Date apn!28,2004 <br />