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Ms. Christina Carbajal March 27, 2009 Page 2 of 3 SURFACE/COMPONENT EMISSIONS MONITORING On January 9, 2009, surface and component emissions monitoring was performed over the surface and LFG Collection System of the subject site. The intent of the monitoring was to identify any specific locations or areas of the landfill surface or collection system components with organic compound concentrations exceeding the Title V or SJVAPCD Rule 4642 threshold limit value of 500 or 1000 ppmv measured as methane. EMISSIONS TESTING INSTRUMENTATION/CALIBRATION Instruments used to perform the landfill surface emission testing consisted of the following: • Landtec Model SEM 500 portable Flame Ionization Detector(FID). This instrument measures methane in air over a range of 1 to 50,000 ppmv. The FID meets SJVUAPCD requirements and was calibrated in accordance with Title V test methods. Instrument calibration logs are shown in Attachment 2. SURFACE EMISSIONS MONITORING PROCEDURES Surface emissions monitoring was conducted in accordance with NSPS Title V requirements. Monitoring was performed with the FID inlet held within 1 to 3 inches of the landfill surface while a technician walked a grid in parallel paths not more than 90 feet apart over the surface of the landfill. Cracks, holes and other breaks in the surface were also tested. Surface emissions readings were recorded approximately every 30 seconds or when significantly different values were measured. Component emissions monitoring was performed at all accessible LFG Collection System components with the FID inlet held within 1 to 2 centimeters from each location tested. During surface emissions testing, wind speed was monitored and averages were observed to be typical for the subject site. No rainfall had occurred within 72 hours of the monitoring event. Therefore, site meteorological conditions were within the Title V requirements on the test date. TESTING RESULTS Landfill surface and component emissions monitoring showed no exceedence of the Title V or Rule 4642 threshold limit of 500 or 1000 ppmv,respectively. Results of monitoring are shown in Attachment 1 and locations on Figure 1. Based on these results,no additional testing is recommended at this time. SCS is scheduled to perform our second quarterly testing of 2009 (April through June),by the month of June 2009.