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TABLEOUMMARY OF RESULTS OF GROUNDWATER MONITORING 0 • <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X MTBE DO LAB <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug1A) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) <br /> MW-4 04/16/97 2590 533 --- 2057 5000 173 ND<5 0 775 767 131 37 SPL <br /> MW-4 10/15/97 2590 571 --- 2019 510 29 ND<1 0 91 636 25 73 SPL <br /> MW-4 03/17/98 2590 487 — 2103 890 36 ND<1 0 51 88 620 63 SPL <br /> MW-4 01106/99 2590 542 - 2048 4100 11 19 180 110 84 - SPL <br /> MW-4 09/13/99 2590 562 2028 2400 42 65 89 21 330 SPL <br /> MW-4 01/19/00 2590 515 — 2075 5200 72 ND<0 5 93 37 29 — PACE <br /> MW-4 04112/00 2590 580 — 2010 8300 71 55 200 61 55 — PACE <br /> MW-4 07/22/00 2590 567 --- 2023 2904 81 28 63 19 46 --- PACE <br /> MW-4 10/26100 2590 520 — 2070 2000 16 ND<0 5 27 24 23 --- PACE <br /> MW-4 01/17/01 2590 535 — 2055 820 949 135 587 135 401 --- PACE <br /> MW-4 04112/01 2590 535 — 2055 1600 14 556 786 113 556 — PACE <br /> MW-4 05/23/01 2590 551 --- 2039 2700 135 539 775 28 i 471 — PACE <br /> MW-4 07/31/01 2590 585 — 2005 1400 83 108 228 11 105 --- PACE <br /> MW-4 10/30101 2590 605 — 1985 390 406 193 0 526 ND<1 5 253 --- PACE <br /> MW-4 01129/02 2590 498 --- 2092 720 454 292 396 ND<1 0 39 --- PACE <br /> MW-4 04/30/02 2590 522 --- 2068 2100 411 374 329 ND<5 0 105 --- PACE <br /> I <br /> Blaine Tech Services,Inc,Report,020430-EB-1,BP Oil 11194 at 2375 Tracy Blvd,Tracy,Catrtornra Page 8 <br />