ARCHIVED REPORTS_2006_21 - Laserfiche WebLink

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Ms. Christina Carbajal May 22, 2006 Page 5 SCS understands the BFS operated as programmed throughout the reporting period with the exception of the following scheduled and unscheduled shutdowns: • On April 1, 8 and 27, 2006, SCS was notified by the ADS of a BFS power failure shutdown. Upon arrival, SCS reset necessary controls, restarted the BFS and verified proper operation. Also, on April 8, 2006, SCS performed re-calibration and wire securing to the flare intake louver control motor due to an observed malfunction, restoring proper operation. • On April 11, 2006, SCS shutdown the BFS to switch operation of the LFG blowers. Upon completion of this work, the BFS was restarted and normal operation verified. • On April 21, 2006, SCS shutdown the BFS to re-secure the flare intake louvers which had loosened attributed to flare vibrations. Upon completion of this work, the BFS was restarted and normal operation verified. As of the date of this report, Shaw Group Inc. has performed repairs/modifications to the LFG flare in an attempt to reduce the observed vibrations. SCS will continue to adjust the BFS and observe operation and make further recommendations as necessary. On April 27, 2006, SCS performed monthly BFS Condensate Storage Tank Carbon Vent VOC breakthrough testing. Photo Ionization Detector(PID) results indicated that no VOC's were detected at the inlet and outlet of the carbon vent. In addition, as previously reported, SCS observed several areas of paint on the upper portion of the flare stack, which have begun to discolor and/or flake off the exterior surface. SCS will continue to inspect these areas and make further recommendations as necessary. Finally, during the reporting period, the flare exit gas temperature was observed to remain above the SJVAPCD 1400 degree Fahrenheit prescribed operating criteria. The lowest flare exit gas temperature observed by SCS during our site visits was approximately 1571 degrees Fahrenheit. All other operating parameters remained within acceptable operating limits. Site Surface Observation Visual observation of the landfill surface along the extent of the extraction system is also performed on a monthly basis. Observations for erosion, surface cracks (that might allow LFG to escape or promote air intrusion) and settlement around wells, laterals and main pipelines are conducted. During this reporting period, no settlement that might adversely impact (e.g., allow condensate accumulation such that a complete blockage could occur) the LFG collection system operation was observed, with the exception of the previously mentioned area of flooding on the Austin section side of the landfill.