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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 /> 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) (ug/L) (pg1L) (Wg1L) (pgIL) (pg1L) (Erg/L) (pg1L) (mg/L) Comments <br /> MW-2 6/16/1993 — 2633 353 2280 ND<50 — ND<0 5 ND<0 5 N0<0 5 ND<0 5 — -- <br /> 10/22/1993 -- -- -- -- 460 — 09 07 —. 14 0 8 1,700 — QC-1 <br /> 10/22/1993 — 2633 606 2027 460 — 1 06 14 08 1,600 - <br /> 1124/1994 -- 2633 563 2070 ND<50 -- tD5 <br /> ND<0 5 ND<0 5 06 209 — <br /> 6/7/1994 — 2633 608 2025 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<5 0 28 <br /> --ill3/1994 - 2633 636 1997 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<5 0 8 1 <br /> 1!10!1995 -- 2633 554 .2079 100 -- 2 ND<0 5 12 - 52 <br /> 3/23/1995 — 2633 563 2070 ND<50 — 053 ND<0 50 051 19 -- 89 <br /> 10/4/1995 -- 2633 637 1996 210 -- ND<1 0 ND<1 0 ND<1 0 ND<2 0 840 71 <br /> 9/4/1996 — 26 33 590 2043 3,900 ND<25 ND<25 ND<25 ND<50 12,000 3 <br /> 3/29/1996 — -- — -- 11 000 — 37 9 4 5 13,000 — QC-1 <br /> 3/29/1996 -- 2633 659 1974 9,200 -- 34 9 3 4 12,000 36 <br /> 7/1/1996 — 2633 716 1917 5,200 — 58 33 ND<1 ND<l 10,000 31 <br /> 10115/1996 — 2633 734 1899 ND<250 -- ND<2 5 ND<5 0 ND<5 0 ND<5 0 14,000 4 <br /> 4/16/1997 -- 2633 598 2035 1 180 -- ND<0 5 ND<1 0 ND<1 0 ND<1 0 57 42 <br /> 10/15/1997 — -- — — ND<50 — ND<0 5 ND<1 0 ND<1 0 ND<1 0 120 — QC-1 <br /> 10/15/1997 -- 2633 608 2025 ND<50 -- ND<0 5 ND<1 0 ND<1 0 ND<1 0 120 54 <br /> 3/17/1998 2633 557 2076 170 -- ND<0 5 ND<1 0 ND<1 0 ND<1 0 180 61 <br /> 1/6/1999 — 2633 -- -- -- - -- — — — -- <br /> 9/13/1999 — 2633 561 2072 480 — 35 73 ND<5 0 ND<5 0 99 000191,000 - <br /> 1/19/2000 2633 561 2072 800 - 11 ND<0 5 N0<0 5 12 84,000 — <br /> 4/12/2000 — 2633 613 2020 1 600 — 4 2 ND<0 5 ND<0 5 ND<0 5 11,000 — <br /> 7/22/2000 -- 2633 598 2035 3,800 - 63 086 063 72 90,000 -- <br /> 10/26/2000 -- 26 33 501 21 32 1,100 09 ND<0 5 ND<0 5 069 3,400 — <br /> 1/17/2001 - 2633 514 21 19 18,000 — log ND<5 0 ND<5 0 ND<5 0 28,200 — <br /> 4/12/2001 — 2633 581 2052 700 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 946 — <br /> 5/23/2001 -- 2633 581 2052 1,100 0 594 ND<0 5 ND<0 5 ND<1 5 1,330 — <br /> 7/31/2001 — 2633 606 2027 1,600 -- 203 ND<5 0 ND<5 0 ND<15 1,490 -- <br /> 10/30/2001 - 2633 612 2021 420 — 113 575 462 232 363 — <br /> 1/29/2002 - 26 33 557 2076 610 — 865 ND<0 5 ND<0 5 ND<1 0 780 — <br /> 4/30/2002 -- 2633 568 2065 2,600 — 394 ND<0 5 506 811 2,140 — <br /> 7/30/2002 P 2633 49.1 21 42 ND<500 -- ND<0 5 ND<0 5 ND<0 5 ND<l 0 586 - <br /> 10/31/2002 P 2fi 33 5 76 20 57 ND<50 — 2 7 1 3 ND<0 5 ND<0 5 13 — <br /> Report Date April 28,2004 Page 12 of 24 <br />