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. e Mr. Robert McClellon November 1, 2010 Page 3 Operation and Monitoring Recommendations Once installed, the appropriate vacuum will be evaluated at each SVE wellhead. The effective ROI of each SVE well can be evaluated by monitoring for a downward trend in any positive static pressure historically monitored at monitoring probes GP-10, GP-11, and GP- 12, as well as at other appropriate locations. In addition to monitoring for downward static pressure effects at nearby monitoring points, LFG quality can be measured at the SVE wells and at the monitoring probes. This monitoring will be conducted as the SVE wells are opened and placed under operational vacuum. Trends in LFG quality at the monitoring probes can be monitored as vacuum is applied to the SVE wells. LFG quality should increase or decrease as the SVE wells are opened by adjusting their individual control valves. If increasing vacuum improves LFG quality (reduces the LFG constituents) at the monitoring probes, the vacuum applied to the SVE wells can continue to be increased until the monitoring probes are free of migrating LFG. If the increasing vacuum applied to the SVEs has a negative impact on LFG quality in the monitoring probes, then the SVE wells can be adjusted to limit the vacuum applied at each SVE well until the negative impact on LFG quality in the monitoring probes is reversed. Only through the combined monitoring of vacuum and LFG quality at the perimeter monitoring probes and the SVE wells to be installed in the vicinity of monitoring probes GP- 12, 11, and 10, can the effects of operation of the proposed SVE wells on the monitoring probes be determined. The SVE wells are designed with the intent to operate them in a manner that has a positive effect in controlling LFG migration to the perimeter monitoring probes. If operation of the SVE wells does not have a positive effect in controlling LFG migration, the SVE control valves can be closed, which should return the subsurface conditions to the pre-SVE operations condition. Additional Collection Wells Additionally, interior LFG extraction wells will be installed in conjunction with the SVE wells. Some of the interior wells are designed to penetrate the old Austin Road Landfill unit. It is believed the LFG is migrating from the Austin Road Landfill along the underside of the liner under the Forward Landfill to the perimeter monitoring probes. The intent is therefore to design and operate the new interior LFG extraction wells to extract LFG from the Austin Road Landfill fill mass thus controlling migration of this LFG. The new Austin Road Landfill LFG extraction wells will be monitored and assessed in conjunction with the SVE wells and perimeter monitoring probes to have the greatest positive impact in controlling the LFG migration to the perimeter monitoring probes. Through the design and installation of the interior wells and SVE wells as shown in the Work Plan, followed by proper operation and monitoring, a select combination of wells and applied vacuums will be determined that will maximize LFG collection and reduce off-site LFG migration. Upon determining the ideal combination of wells and operational criteria, an operating plan will be implemented which is expected to bring the perimeter monitoring probes into compliance.