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.e the radius of influence of the VES in the central area of the site. MW-4 was manifolded to the blower operating on MW-3 and the vapor extraction wells (VP-1, VP-2, VP-3, and VP-4). The vapor extraction wells were turned back on to draw vadose vapors from under the 7-ELEVEN store and to remediate this area more completely. However, after one month of operation under these conditions, there was no appreciable difference in the vapor concentrations or flow rates obtained from the VP wells using clean air injection. Therefore in .June 1990, the system was reconfigured to use MW-9 and PW-1 as vapor extraction wells and MW-4 was manifolded to its' own vacuum blower and the vapor extraction wells returners to use as vapor inlet wells. MW-3 was removed from use as a vapor extraction well and changed to a passive vapor inlet well. -ter Currently, the VES is operating with wells MW-1, MW-4, and RW-1 isolated on their own vacuum blower and MW-9 and PW-1 are being used as vapor extraction wells sharing a vacuum blower. If after three weeks of using MW-9 and PW-1 as vapor extraction wells the extracted vapor concentrations do not increase to detectable levels, the system will be reconfigured to use MW-1, MW-3, MW-4, and RW-1 as vapor extraction wells with their own dedicated vacuum blowers. ACTIVATED CARBON UTILIZATION The initial charge of 4,000 pounds of virgin 4 x 6 mesh activated carbon in reactors 1 and 2 were changed out and replaced with 4,000 pounds of virgin 4 x 6 mesh U activated carbon on January 19, 1990. The partial saturation of the third reactor on 3 VAPOR EXTRACTION TECHNOLOGY, INC.