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i 0 0 TABLE 1 SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G B T E X MTBE DO LAS ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ugll) (ug1l) (ug/1) (ug1l) (ugll) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-7 08/05/91 621 3082 -2461 70 19 ND ND ND --- --- PRE MW-7 08/15/91 621 --- -- --- --- – --- PRE MW-7 12109/91 621 3136 -2515 ND 19 ND 1 2 ND --- --- PRE MW-7 03/09/92 621 3015 -2394 ND ND ND ND ND --- --- PRE MW-7 06/19/92 621 30 19 -2398 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- -- ANA MW-7 09/18192 621 3198 -2577 90 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- --- ANA MW-7 12/09/92 621 3233 -2612 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 =__ __- ANA QC-1 (d) 12/09/92 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ANA MW-7 03/11/93 621 2985 -2364 110 31 08 22 14 -- --- PACE MW-7 06/15/93 621 2774 -2153 71 14 08 28 24 --- --- PACE QC-1 (d) 06/15/93 -- --- -- 120 19 ND<O 5 59 46 --- PACE MW-7 09/15/93 621 2816 -2195 170 1 2 ND<O 5 58 25 --- --- PACE QC-1 (d) 09/15/93 -- -- -- 160 1 ND<O 5 55 26 --- --- PACE MW-7 12/22/93 621 2803 -2182 110 1 9 1 3 38 10 --- --- PACE MW-7 04/01/94 621 27 15 -2094 340 25 1 30 43 --- 38 PACE QC-1 (d) 04/01/94 --- --- -- 330 26 09 28 42 --- -- PACE MW-7 07/27/94 621 2721 -21 DO 72 ND<O 5 ND<O 5 ND<O 5 ND<O 5 -- 29 PACE MW-7 11/30/94 621 2758 -2137 140 ND<O 5 08 44 83 --- 38 PACE QC-1 (d) 11/30/94 --- --- --- 140 06 1 5 93 --- -- PACE MW-7 02/15/95 621 2658 -2037 90 ND<O 50 ND<O 50 21 17 --- 34 ATI MW 7 04/21/95 621 2461 -1840 53 065 ND<O 50 14 14 --- 49 ATI MW-7 07/19/95 621 2374 -1753 81 059 ND<O 50 055 ND<1 0 --- 54 ATI QC-1 (d) 07/19/95 -- --- -- 82 ND<O 50 ND<O 50 054 ND<1 0 --- --- ATI MW-7 (e) 10/20/95 621 2415 -1794 110 ND<O 50 ND<0 50 ND<O 50 ND<1 0 160 54 ATI MW-7 10/20/95 621 --- -- 89 ND<O 50 ND<0 50 ND<0 50 ND<1 0 110 52 ATI MW-7 (e) 04123/96 621 2078 -1457 ND<500 ND<O 5 ND<0 5 ND<O 5 ND<O 5 150 --- SPL MW-7 04/23/96 621 — --- ND<500 ND<O 5 ND<O 5 ND<O 5 ND<O 5 160 --- SPL MW-7 07/12/96 621 21 18 -1497 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 59 SPL QC-1 (d) 07/12/96 -- — --- ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 --- SPL MW-7 10/18/96 621 2070 -1449 220 ND<O 5 ND<1 0 ND<1 0 ND<1 0 200 53 SPL QC-1 (d) 10/18/96 --- --- --- 240 ND<O 5 ND<1 0 ND<1 0 ND<1 0 200 --- SPL MW-7 02/26198 621 1300 -679 120 ND<O 5 ND<1 0 ND<1 0 ND<1 0 95 45 SPL MW-7 07/07/98 621 1220 -599 1800 ND<O 5 ND<1 0 ND<1 0 ND<1 0 2400 35 SPL MW-7 01/19/99 621 1433 -812 3200 ND<1 0 ND<1 0 ND<1 0 ND<1 0 3800 --- SPL MW-7 (h) 07/14/99 621 13 13 -692 --- --- - --- --- --- -- -- MW-7 07/26/99 621 1330 -709 21000 ND<1 0 ND<1 0 72 24 18000 -- SPL MW-7 10/07/99 621 1464 -843 33060 ND<1 0 ND<1 0 1 1 ND<1 0 19000 --- SPL MW-7 01/20/00 621 15 15 -894 200 16 ND<O 5 ND<O 5 ND<O 5 25000 --- PACE MW-7 04/11/00 621 1540 -9 19 2500 U) 33 ND<O 5 ND<O 5 053 63000 --- PACE Pa e 6 Blame Tech Services Inc Report 000411-F-1 13P Oil 11192 at 1403 Country Club Blvd Stockton California 5