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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former SP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> i <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pgll-) WIL) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-4 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 <br /> 620 63 <br /> 1/611999 - 2590 542 2048 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 90 515 2075 5,200 — 72 ND<0 5 93 37 29 -- <br /> 4/12/2000 2590 580 2010 8,300 — 71 5 5 200 61 55 -- <br /> 7/72/2000 — 25 90 567 2023 2,900 - 81 2 8 63 19 46 — <br /> 10/26/2000 - 2590 520 2070 2,000 - 16 ND<0 5 27 24 23 - <br /> 1/17/2001 - 2590 535 2055 820 -- 949 135 587 135 401 -- <br /> 4/12/2001 2590 535 2055 1,600 -- 14 556 786 11 3 556 <br /> 5/23/2001 — 2590 5 51 20 39 2,700 -- 135 539 775 281 471 — <br /> 7/31/2001 -- 2590 585 2005 1,400 -- 83 108 228 11 105 - <br /> 10/30/2001 — 2590 605 1985 390 — 406 193 0 526 ND<1 5 253 — <br /> 1/29/2002 -- 2590 498 2092 720 — 454 292 396 ND<1 0 39 — <br /> 4/30/2002 -- 2590 522 2068 2,100 — 411 374 329 ND<5 0 105 — <br /> 7/30/2002 P 25 90 559 2031 1,100 — 108 1 19 335 621 395 - <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 27 086 32 — <br /> 04/30/2003 P 2590 515 2075 1 200 -- 0 84 J <0 50 93 36 41 -- <br /> 07/30/2003 P 2590 5 80 20 10 260 — <12 <1 2 <1 2 <1 2 49 -- <br /> 10/29/2003 P 2590 563 2027 1,300 — 34 J <1 0 55 J <1 0 79J -- <br /> 01/26/2004 P 2590 530 2060 770 -- <50 <50 <5 0 <5 0 16 — <br /> 04/28/2004 P 2590 547 2043 130 — <0 50 <0 50 <0 50 <0 50 84 -- Water Level data from <br /> 4/27104 <br /> 07/30/2004 P 25 90 597 1993 270 — 053 <0 50 0 fi9 <0 50 31 - <br /> 10/28/2004 P 25 90 554 2036 2,000 — <50 <50 10 1 <50 120 -- <br /> 01/31/2005 P 259 5 02 20 88 900 — 075 <0 50 2 9 058 35 -- <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 4 73 2072 <br /> Report date April 8,2005 Page 18 of 27 <br />