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M Mir <br /> M <br /> TC Associates, Inc <br /> TABLE 7 - REDUCTIONS IN HYDROCARBON CONCENTRATIONS IN GROUNDWATER <br /> SINCE INITIAL TREATMENT SYSTEM START-UP <br /> Value Reclamation Corporation, 151 south Main Street, Manteca, California <br /> as UAWILINE <br /> 08/25/98 8,200 <br /> 09/10/97 11000 12/10/98 530 09/10/97 110,000 12/10/98 11,000 <br /> 01/16/98 4000 12/10/98 540 01/16/98 44,000 03/25/99 17,000 <br /> Average 8,667 410 953% 88,000 12109/98 12,067 86 3% <br /> BEI-MW1 05/16/97 220 08/25/98 36 05/16/97 11,000 08/25/98 12000 <br /> 09/10/97 130 12/10/98 1 4 10/08/97 5,300 12/10/98 5100 <br /> 01/16/98 160 03/25/99 0 51 12/17/98 3,800 03/25/99 2300 <br /> Average 170 _18 989% 6,700 647 90 3% <br /> BEI-MW2 U5/16/91 45— 08/25198 U b Ub/1 6/97 6,000 UB/25/98 530 <br /> 09/10/97 13 12/10/98 0 5 09/10/97 640 12/10/98 500 <br /> 01/16/98 22 03/25/99 0 5 01/16/98 5,400 03/25/99 500 <br /> Average 270 0 5 981% 4,013 610 987% <br /> SRK-MW2 05/16/97 670 08/25/98 0 5 05/16/97 18,000 08/25/98 500 <br /> 09/10/97 270 12/10/98 1 0 5 1 110/08197114,000 1 12/10/98 1 500 <br /> 01/16/98 850 03/25/99 1 0 5 1 112117/98 32,000 1 03/25/99 1 500 <br /> Average 597 0 5 99 9% 27,333 50 998% <br /> * = Represent the results of the three groundwater monitoring events conducted prior <br /> to the startup of the groundwater extraction system in February 1998 <br /> ** = Represent the results of the last three quarterly groundwater monitoring <br /> events, the last conducted on December 10, 1998 <br /> I <br />