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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING <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) (ugln) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) <br /> MW-4 09/02/86 --- — -- — 48000 3000 3200 --- 4700 --- — SUP <br /> MW-4 02/09/87 — — --- — 14000 230 160 --- 880 --- — SUP <br /> MW-4 09/21/87 — -- --- — 14000 620 83 — 1600 — - SUP <br /> MW-4 10/20/87 --- — -- — 4900 50 ND<0 5 --- ND<0 5 --- — SUP <br /> MW-4 11/20187 — — --- — 2500 240 7300 --- 260 --- — SUP <br /> MW-4 03/13/88 2590 504 -- 2086 --- — --- — — --- <br /> MW-4 03/23188 2590 508 --- 2082 76 10 16 — 13 — --- SUP <br /> MW-4 06/07/88 2590 525 — 2065 --- — --- — — --- — "- <br /> MW-4 10/18/88 2590 555 --- 2035 1100 75 28 13 35 --- — SUP <br /> MW-4 02/15/90 2590 490 --- 2100 1800 370 43 130 98 -- --- SUP <br /> MW-4 04/26190 2590 505 -- 2085 -- --- — — --- — --- — <br /> MW-4 07112/90 2590 516 — 2074 3100 510 41 220 320 — — — <br /> MW-4 08/27/90 2590 546 --- 2044 --- — --- --- — --- — "' <br /> MW-4 11/02/90 2590 551 --- 2039 --- — — --- — --- — <br /> MW-4 11/05/90 2590 553 — 2037 950 330 18 52 29 --- — <br /> MW-4 02/25/91 2590 473 --- 2117 370 120 33 22 13 -- -- -- <br /> MW-4 06/27/91 2590 564 — 2026 1500 130 ND<0 5 21 18 --- — -- <br /> MW-4 09/25/91 2590 660 --- 1930 810 70 49 12 110 — — SEQ <br /> MW-4 12/10/91 2590 543 --- 2047 1300 100 14 62 110 -- --- SEQ <br /> MW-4 03/25/92 2590 489 — 2101 1400 500 40 210 320 --- — SEQ <br /> MW-4 06/25/92 2590 711 040 1909 — — --- — — --- — --- <br /> MW-4 12/08/92 2590 539 SHEEN 2051 --- --- — --- --- — — — <br /> MW-4 03/10/93 2590 495 SHEEN 2095 --- --- — — ~- — --- --- <br /> MW-4 06/16/93 2590 547 SHEEN 2043 — — — — — --- — — <br /> MW-4 10/22/93 2590 550 SHEEN 2040 — — — --- — --- -- — <br /> MW-4 01/24/94 2590 554 -- 2036 6900 88 16 130 340 582 (I) --- PACE <br /> MW-4 06/07/94 2590 598 --- 1992 23000 210 30 720 1200 138 (1) 32 PACE <br /> MW-4 09113/94 2590 642 — 19 48 9000 20 15 240 550 68 (1) 70 PACE <br /> QC-1 (d) 09/13/94 — --- --- — 5600 21 13 220 500 — — PACE <br /> MW-4 09/13/94 2590 483 — 2107 5100 86 1 280 510 — 62 ATI <br /> QC-1 (d) 01110/95 --- — --- --- 2300 74 1 220 380 - — ATI <br /> MW-4 03/23195 2590 472 009 2125 --- — --- --- — -- — — <br /> MW-4 10/04/95 2590 594 014 2007 — --- --- — --- -- --' -- <br /> MW-4 01/04/96 2590 512 — 2078 1700 27 25 36 58 25 08 — <br /> MW-4 03/29/96 2590 497 — 2093 1300 76 ND<1 36 32 ND<10 24 SPL <br /> MW-4 07/01/96 2590 557 — 2033 11000 160 49 590 836 ND<100 40 SPL <br /> MW-4 10/15196 2590 577 — 2013 2100 39 ND<10 160 190 ND<100 47 SPL <br /> QC-1 (d) 10/15/96 — --- — — 1100 22 ND<5 0 75 85 ND<50 47 SPL <br /> Blaine Services, Inc Report,020129-KF-1,BP Oil 11194 at 2375 Tracy Blvd,Tracy,Cafa Page 7 <br />