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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TRH-G B T E X MTBE DO IAB <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug//I) (Ugll) (ugll) (ugll) (ugfl) (ugR) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) <br /> MW-4 09/02/86 -- -- --- — 48000 3000 3200 4700 -- -- SUP <br /> MW-4 02/09187 -- -- --- -- 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<O 5 -- ND<O 5 --- -- SUP <br /> MW-4 11/20/87 --- -- — -- 2500 240 7300 --- 260 --- — SUP <br /> MW-4 03/13/88 2590 504 --- 2086 -- -- ___ —_ _— <br /> MW-4 03/23/88 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 --- 21 00 1800 370 43 130 98 -- — SUP <br /> MW-4 04/26/90 2590 505 — 2085 -- -- -_ -- __ <br /> MW-4 07/12/90 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 11105/90 2590 553 -- 2037 950 330 18 52 29 --- -- _- <br /> MW-4 02/25/91 2590 473 — 2117 370 120 33 22 13 — -- -- <br /> MW4 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 06/25192 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 /> MW4 06/16/93 2590 547 SHEEN 2043 --- <br /> MW-4 10/22/93 2590 550 SHEEN 2040 --- --- -- --- __ ___ --- <br /> MW-4 OV24194 2590 554 -- 2036 6900 88 16 130 340 --- --- PACE <br /> MW-4 06/07/94 2590 598 — 1992 23000 210 30 720 1200 -- 32 PACE <br /> MW-4 09/13/94 2590 642 --- 1948 9000 20 15 240 550 — 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 ATE <br /> QC-1 (d) 01/10/95 -- --- -- -- 2300 74 1 220 380 -- --- AT[ <br /> MW-4 03/23/95 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 /> MW4 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 /> MW4 10/15/96 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 /> MW-4 04/16/97 2590 533 -- 2057 5000 173 ND<5 9 775 767 131 37 SPL <br /> MW4 10/15/97 2590 571 — 20 19 510 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 /> Blaine Tech Services, Inc, Report,000119-G-2, BP Oil 111194 at 2375 Tracy Blvd Tracy California Page 5 <br />