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i <br /> 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 LAS <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug/!I) (ug/L) (ug/L) (ug/L) (uglL) (ug/L) (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<0 5 --- ND<0 5 --- — SUP <br /> MW-4 11/20/87 --- --- --- — 2500 240 7300 — 260 — — SUP <br /> MW-4 03113/88 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 10118/88 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 04/26/90 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 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 06116/93 2590 547 SHEEN 2043 — — — --- --- --- — — <br /> MW-4 10122/93 2590 550 SHEEN 2040 --- --- --- — — — --- --- <br /> MW-4 01124/94 2590 554 — 2036 6900 88 16 130 340 582 (1) — PACE <br /> MW-4 06/07/94 2590 598 --- 1992 23000 210 30 720 1200 138 (1) 32 PACE <br /> MW-4 09/13/94 2590 642 — 1948 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) 01/10195 --- — --- — 2300 74 1 220 380 — — ATI <br /> MW4 03/23/95 2590 472 009 2125 --- --- --- — — — --- -- <br /> MW-4 10/04/95 2590 594 014 2007 --- --- --- -- — — --- — <br /> MW-4 01104196 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 10/15/96 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 /> Blaine Toervices,Inc,Report 020430-EB-1,BP Oil 11194 at 2375 Tracy Blvd,Tracy,Ca or <br /> age 7 <br />