Laserfiche WebLink
Ms. Christina Carbajal <br /> June 22, 2006 <br /> Page 2 <br /> Surface/Component Emissions Monitoring <br /> On April 26, 2006, surface and component emissions monitoring was performed over the surface <br /> and LFG Collection System of the subject site. The intent of the monitoring was to identify any <br /> specific locations or areas of the landfill surface or collection system components with organic <br /> compound concentrations exceeding SJVUAPCD Rule 4642 threshold limit value of 500 ppmv <br /> measured as methane. <br /> Emissions TestinjZ Instrumentation/Calibration <br /> Instruments used to perform the landfill surface emission testing consisted of the following: <br /> • Century Organic Vapor Analyzer (OVA) Model 108 portable Flame Ionization <br /> Detector(FID). This instrument measures methane in air over a range of 1 to 10,000 <br /> ppmv. The OVA meets SJVUAPCD requirements and was calibrated in accordance <br /> with Rule 4642 Section 6.1.1.1 test methods. <br /> • Davis Instruments Weather Wizard III Anemometer with continuous data recorder for <br /> meteorological conditions in accordance with SJVUAPCD Rule 4642 Section 6.1.1.3. <br /> Instrument calibration logs are shown in Attachment 2. <br /> Surface Emissions Monitoring Procedures <br /> Surface emissions monitoring was conducted in accordance with SJVUAPCD Rule 4642 Section <br /> 6.1.1.2. Monitoring was performed with the OVA inlet held within 3 inches of the landfill <br /> surface while a technician walked a grid in parallel paths not more than 90 feet apart over the <br /> surface of the landfill. Cracks, holes and other breaks in the surface were also tested. Surface <br /> emissions readings were recorded approximately every 30 seconds or when significantly <br /> different values were measured. <br /> Component emissions monitoring was performed at all accessible LFG Collection System <br /> components with the OVA inlet held within 1 to 2 centimeters of each location tested. <br /> During surface emissions testing, wind speed was recorded using the on-site anemometer. <br /> Wind speed averages were observed to remain below 5 miles per hour and no instantaneous <br /> speeds exceeded 10 miles per hour. No rainfall had occurred within 72 hours of the monitoring <br /> events. Therefore, site meteorological conditions were within the modified Rule 4642 <br /> requirements on the test date. <br />