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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 00 <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (pg1L) (pglL) (,ug1L) (ag/L) (pg1L) (dug/L) (pg1L) (mg/L) Comments <br /> MW-6 2/25/1991 -- 2563 410 2153 6 600 -- 310 14 410 110 - -- <br /> 6/27/1991 -- 2563 509 2054 170 000 _ 260 61 140 370 — <br /> 9/25/1991 - 25 63 560 2003 20,000 590 19 910 340 -- — <br /> 12l10l1991 — 2563 488 2075 7 500 170 69 350 60 — — <br /> 3/25l1992 — 2563 428 2135 5,100 - 920 30 990 360 - - <br /> 6125l1992 -- 2563 679 1797 — - -- -- -- — - <br /> 121811992 -- 2563 478 2085 -- - -- — -- -- '" — <br /> 3/10/1993 -- 2563 423 2140 - -- — - — — -- _ <br /> 6/16/1993 -- 25 63 478 2085 — — -- — -- -- ~ <br /> 10/22/1993 -- 2563 494 2069 -- - -- ~ -- -- — _ <br /> 1/24/1994 -- 2563 465 2098 4,700 - 320 24 440 100 673 <br /> 6/7/1994 -- 2563 511 2052 — - -- -- — — — ~ <br /> 9/13/1994 — <br /> 2563 571 1992 — - -- - — -- — <br /> 1/10/1995 — 2563 322 2241 <br /> 3/23/1995 — 2563 386 2177 -- — -- — - — -- — <br /> 10/4/1995 -- 2563 533 2030 <br /> 1/411996 2563 431 2132 - -- - -- — — — _ <br /> 3/29/1996 - 2563 417 2146 <br /> 7/1/1996 2563 472 2091 <br /> 10115/1996 — 2563 499 2064 <br /> 4/16/1997 — 2563 363 2200 - <br /> 10/15/1997 - 2563 480 2083 -- <br /> 3/17/1998 _ 2563 440 21 23 <br /> 3/17/1998 -- 2563 511 2052 -- — -- — — _ — <br /> 1/6/1999 -- 25 63 473 2090 31,000 — 220 ND<50 820 150 13,000 — <br /> 9/13/1999 25 63 499 2064 11,000 — 50 54 420 83 14 -- <br /> 1/19/2000 -- 2563 437 2126 33 000 -- 100 72 1,100 56 3,600 - <br /> 4/12/2000 - 2563 575 1988 26,000 - 310 58 710 130 480 -- <br /> 7/22/2000 -- 2563 508 2055 1 300,000 — 210 ND<75 1,700 1,100 1,300 — <br /> 10/26/2000 — 2563 475 2088 220,000 580 400 1,400 1 600 1,800 -- <br /> 9/17/2001 -- 25 63 -- — — -- — — -- -- <br /> 4l1212001 2563 458 2105 13,000 — 178 57 419 165 528 -- <br /> 5/23/2001 -- 2563 4 8020 83 17,000 — 259 117 515 272 159 — <br /> Report Date April 28,2004 Page 19 of 24 <br />