ARCHIVED REPORTS_2008_1 - Laserfiche WebLink

Home Browse Search

E. Nature, Age of Waste and Potential to Generate Landfill Gas (LFG). The nature and age of the refuse placed in the FSL does not prompt special design features for the LFG migration monitoring wells. Wastes disposed to the site are mostly commercial and household waste, construction/demolition waste, and agricultural waste. III. ON-SITE STRUCTURE MONITORING On-site occupiable structures will be monitored for methane gas concentration. These structures and their monitoring points of compliance are identified below. ON-SITE STRUCTURE MONITORINGLOCATIONS POINT OF COMPLIANCE Scale House Interior air Electrical conduit-entry point within the building Maintenance Building Interior air Electrical conduit-entry point within the building Managers Residence Crawl space below building Electrical conduit-entry point within the building On-Site Residence (South Crawl space below building Electrical conduit-entry point of entrance road within the building IV. MONITORING PROCEDURES Concentration of methane gas generated by the decomposition of refuse within the property boundary of FSL will be monitored with the following requirements: 1. Concentration of methane gas does not exceed the lower explosive limit for methane (5%) at the monitoring perimeter soil gas wells. 2. Concentration of methane gas does not exceed 25 percent of the lower explosive limit for methane (1.25%) in on-site structures. A. Monitoring Methods Combustible gas concentration will be measured with instruments utilizing infrared absorption, catalytic combustion, or thermal conductivity. If catalytic combustion is used, oxygen will also be measured to verify sufficient oxygen to enable the catalytic combustion feature to function. Combustible gas concentration (percent by volume) will be recorded using sample forms as found in Appendix A. Foothill Sanitary Landfill 5 County of San Joaquin Landfill Gas Monitoring Plan Department of Public Works Solid Waste Division