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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 ms I) (pg/L) (pg1L) (uglL) (uglt) (pg/L) (lig/L) (ug1) (mg/L) Comments <br /> MW-4 114!1996 -- 2590 512 2078 1,700 27 25 36 58 25 08 <br /> 3129/1996 — 25 90 497 2093 1,300 76 ND<1 36 32 ND<10 2 4 <br /> 7/1/1996 -- 2590 557 2033 11,000 - 160 49 590 836 ND<100 4 <br /> 10/15/1996 - — 1,100 — 22 ND<5 0 75 85 ND<50 4 7 QC-1 <br /> 10/15/1996 - 2590 577 2013 2,100 39 ND<10 160 190 ND<100 47 <br /> 4/16/1997 — 2590 533 2057 5,000 - 173 ND<5 0 775 767 131 37 <br /> 10/15/1997 2590 571 2019 510 — 29 ND<1 0 91 636 25 73 <br /> 3/17/1998 -- 2590 487 2103 890 - 36 ND<1 0 51 88 620 63 <br /> 1/6/1999 - 25 90 5 42 20 48 4,100 — 11 19 180 110 84 — <br /> 9/13/1999 -- 2590 562 2028 2,400 -- 42 65 89 21 330 — <br /> 1/19/2000 — 25 90 5 15 20 75 5 200 -- 7 2 ND<0 5 93 37 29 — <br /> 4/12/2000 -- 2590 580 2010 8,300 — 71 55 200 61 55 - <br /> 7/22/2000 -- 2590 567 2023 2,900 — 81 28 63 19 46 — <br /> 10/26/2000 — 2590 520 2070 2,000 -- 1 6 ND<0 5 27 24 23 — <br /> 1/17/2001 — 2590 535 2055 820 -- 9 49 1 35 58 7 13 5 401 — <br /> 4/12/2001 -- 2590 535 2055 1,600 — 14 556 786 11 3 556 -- <br /> 5123l2001 — 25 90 5 51 20 39 2,700 - 13 5 5 39 77 5 28 1 471 — <br /> 7/31/2001 -- 2590 585 2005 1,400 — 83 108 228 11 105 - <br /> 10/30/2001 -- 2590 605 1985 390 — 406 1 93 0 526 ND<1 5 25 3 <br /> 1129/2002 - 2590 498 2092 720 — 4 54 __Z92 3 96 ND<1 0 39 -- <br /> 4/3012002 -- 2590 522 2068 2,100 — 411 374 329 ND<5 0 105 = <br /> 7/30/2002 P 2590 559 2031 1,100 — 108 1 19 335621 39 5 <br /> 10/31/2002 P 2590 550 2040 1,900 - 42 36 76 10 10 — <br /> 01/30/2003 P 2590 531 2059 600 -- 14 <0 50 27 0 86 32 <br /> 04/30/2003 P 2590 515 2075 1,200 -- 084 J <0 50 93 3 6 41 -- <br /> 07/30/2003 P 2590 580 2010 260 -- <1 2 <1 2 <1 2 <1 2 49 - <br /> 1012912003 P 25 90 5 63 20 27 1,300 3 4 J <1 0 55 J <1 0 79 J — <br /> 01/2612004 P 2590 530 2060 770 -- <5 0 <5 0 <5 0 <50 16 -- <br /> MW-5 2/9/1987 — -- — — 41,000 — 2 300 2 500 — 6,220 — — <br /> 9/21/1987 -- — — -- 18,000 -- 790 14 — 2,200 - - <br /> 10/20/1987 - — -- 34,000 -- 50 ND<0 5 -- 1,200 — - <br /> 11/20/1987 -- — -- 8 700 — 210 6,600 — 230 -- — <br /> 3/13/1988 — 2545 473. 1 2072 L -- — -- -- — <br /> Page 16 of 24 <br /> -- <br /> Report Date April 28,2004 <br />