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TABLE 1&MARY OF RESULTS OF GROUNDWATER MONITORING ' <br /> WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G 8 T E X MTBE DO LAB <br /> ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ug/L) (ug/L) (ug/L) OWL) (ug/L) (ug/L) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) <br /> MW-7 08/05/91 621 3082 -2461 7D 19 ND ND ND — — PRE <br /> MW-7 08/15/91 621 -- --- — — --- --- — -- — PRE <br /> MW-7 12/09/91 621 3136 -2515 ND 19 ND 12 ND — — PRE <br /> MW-7 03/09/92 621 3015 -2394 ND ND ND ND ND -- — PRE <br /> MW-7 06/19/92 621 3019 -2398 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 — — ANA <br /> MW-7 09/18/92 621 3198 -2577 9D ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — ANA <br /> MW-7 12/09/92 621 3233 -2612 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- --- ANA <br /> QC-1 (d) 12/09/92 — — — ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — ANA <br /> MW-7 03/11/93 621 2985 -2364 110 31 08 22 14 PACE <br /> MW-7 06/15193 621 2774 -2153 71 14 08 28 24 - 0) --- PACE <br /> QC-1 (d) 06/15193 — — — 120 19 ND<O 5 59 46 — — PACE <br /> MW-7 09/15/93 621 2816 -2195 170 12 ND<O 5 68 25 PACE <br /> 00-1 (d) 09115/93 — — — 160 1 ND<O 5 55 26 --- --- PACE <br /> MW-7 12/22193 621 2803 -2182 110 19 13 38 10 — PACE <br /> MW-7 04/01194 621 2716 -2094 340 25 1 30 43 496 0) 38 PACE <br /> QC-1 (d) 04/01/94 — — — 330 26 09 28 42 — — PACE <br /> MW-7 07127/94 621 2721 -2100 72 ND<0 5 ND<O 5 ND<O 5 ND<O 5 2855 0) 29 PACE <br /> MW-7 11/30/94 621 2758 -2137 140 ND<O 5 08 44 83 64 0) 38 PACE <br /> QC-1 (d) 11/30/94 — — -- 140 06 1 5 93 69 0) — PACE <br /> MW-7 02/15/95 621 2658 -2037 90 ND<O 50 ND<O 50 21 17 — 34 ATI <br /> MW-7 04/21/95 621 2461 .1840 53 065 ND<O 50 14 14 — 49 ATI <br /> MW-7 07/19/95 621 2374 -1753 81 059 ND<O 50 055 ND<1 0 — 54 ATI <br /> QC-1 (d) 07119/95 — --- — 82 ND<O 50 ND<O 50 054 ND<1 0 — — ATI <br /> MW-7 (e) 10/20/95 621 2415 -1794 110 ND<O 50 ND<O 50 ND<O 50 ND<1 0 160 54 ATI <br /> MW-7 10/20/95 621 — — 89 ND<O 50 ND<O 50 ND<O 50 ND<1 0 110 52 ATI <br /> MW-7 (e) 04/23196 621 2078 -1467 ND<500 ND<O 5 ND<O 5 ND<0 5 ND<0 5 150 --- SPL <br /> MW-7 04/23/96 621 --- — ND<500 ND<O 5 ND<O 5 ND<0 5 ND<O 5 160 --- SPL <br /> MW-7 07/12/96 621 2118 -1497 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 59 SPL <br /> QC-1 (d) 07/12/96 — — — ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 — SPL <br /> MW-7 10/18/96 621 2070 -1449 220 ND<O 5 ND<1 0 ND<1 0 ND<1 0 200 53 SPL <br /> QC-1 (d) 10/18/96 — — — 240 ND<O 5 ND<1 0 ND<1 0 ND<1 0 200 — SPL <br /> MW-7 02126/98 621 1300 -679 120 ND<O 5 ND<1 0 ND<1 0 ND<1 0 95 45 SPL <br /> MW-7 07/07/98 621 1220 -699 1800 ND<O 5 ND<10 ND00 ND<1 0 2400 35 SPL <br /> MW-7 01/19/99 621 1433 -812 3200 ND<1 0 ND<1 0 ND<1 0 ND<1 0 3800 — SPL <br /> MW-7 (h) 07/14/99 621 1313 -692 — — — --- -- — — -- <br /> Blaine Tech Services,Inc,Report 020110-KF-1,BP Oil 11192 at 1403 CountryClub Blvd,Stockton,Cahfomta Page 8 <br />