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' LFG Evaluation Memo December 4, 2013 ' Page 5 of 9 Due the below-grade configuration of the main LFG header and lateral pipelines, SCS was unable ' to perform an evaluation of sample ports for LFG flow and system vacuum profile. SCS attempted to determine the vacuum at the LFG condensate sumps but was unable to do so due to their construction configuration. However, based on the review of the well field data collected, SCS observed that there was adequate vacuum at all locations to enable extraction of LFG at the current generation rates (see Table 2). 1 LFG CONDENSATE HANDLING SYSTEM INSPECTION SCS performed a visual inspection of the condensate management system to verify that the existing ' system is performing properly and adequately draining the liquids being generated by the current collection system. Inspections entailed removal of vault covers and visual observation of accessible condensate sump components. We saw no obvious indications that the controllers, air and condensate lines, or other components were compromised. Based on our visual inspection and pressure reading SCS believes the current condensate management system is adequate and able to remove the condensate from the existing LFG collection system. This is accomplished via a series ' of three condensate sumps located throughout the landfill. During the inspection no pipeline liquid leaks or condensate/liquid accumulation were observed and all systems appeared to be operating normally. rLFG BLOWERVENT STATION ( BVS) INSPECTION AND MONITORING SCS performed an inspection of the blower flare station(BFS)and collected the following monitoring data: methane, carbon dioxide, oxygen, balance gas, CO and H2S concentrations, ' system inlet and outlet pressures and flow. Results of the monitoring are shown on Table 4 as FLARE test port. ' Methane gas concentrations at the blower/flare inlet ranged from 18 to 21 percent by volume with an oxygen gas concentration between 1.6 and 2.6 percent by volume. The approximate total flow indicated by the installed mass flow meter was observed to be approximately 98 scfm. The blower inlet and outlet valves were observed to be open generating an overall system vacuum of approximately 2.3 to 2.4 inches of water column to the LFG collection system. Differential pressure monitoring results at the flare flame arrestor indicated that no fouling was occurring which would ' inhibit system LFG flow. Also, during the BFS inspection, no piping,valve or component LFG leaks were observed. As of the dates of our evaluation,the current LFG control facilities appear to be operating as permitted and all LFG is being flared off through the enclosed stack. However, review of flare data ' indicates that the system as currently configured is subject to shut-down due to the low gas quality and minimum operating requirements of the current flare system.