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r ! S1 <br /> TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G 8 T E X MTBE DO LAB <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (uglll) (ug/L) (ug/L) (ug1L) (uglL) (ug1L) (ppm) <br /> MONITORING (Feet) (Feet) (Feel) (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 11/20/87 --- --- --- — 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 11/05/90 2590 553 --- 2037 950 330 18 52 29 --- -- — <br /> MW-4 02/25/91 2590 473 --- 21 17 370 120 33 22 13 -- — -- <br /> MW-4 06/27/91 2590 564 — 2026 1500 130 ND<0 5 21 18 — --- --- <br /> MW-4 09/25/99 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 10/22/93 2191 551 SHEEN 21140 -- — — — -- — — — <br /> MW-4 01124194 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 09/93/94 2590 642 --- 1948 9000 20 15 240 550 68 (1) 70 PACE <br /> QC-1 (d) 09/13/94 -- — --- --- 5600 29 13 220 500 --- — PACE <br /> MW-4 09/13/94 2590 483 - 2107 5100 86 1 280 510 - 62 ATI <br /> QC-1 (d) 01/10/95 — -- -- --- 2300 74 1 220 380 --- -- ATI <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 /> 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 /> Blame Tech Services,Inc Report 010731-C-1 BP Oil 11194 at 2375 Tracy Blvd,Tracy,Califomia Page 7 <br />