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Description of Operation The LFG collection system will operate near -continuously in accordance with the applicable regulations and the operating permit. LFG wells will be adjusted as needed to maintain compliance with the applicable sections of 40 CFR. LFG will be combusted in a candlestick ("open") flare, constructed and operated in accordance with 40 CFR §60.18. The flare will be operated within the design range of that regulation, destroying at least 98% of the NMOCs contained in the LFG per 40 CFR §60.752(b)(2)(iii)(B)(2) of the NSPS. The flare stack temperature will be monitored continuously using thermocouples to verify that the LFG is being burned. The blowers will automatically shut -down as soon as loss of flame is confirmed. An automatic shut-off valve will close the LFG pipe attached to the flare as soon as flare shut -down is confirmed (Figure 6). The LFG flow rate will be monitored continuously using a gas flow meter installed within the LFG piping leading to the flare. 2. Expected Emission of Air Contaminants Unlike industrial processes in which all material flows are controlled by the system designers, the LFG system will collect LFG based on the production of this gas by the bacterial processes in the refuse fill, which is not controlled by the operation of the LFG system. Therefore, the actual quantity of LFG collected by the system will not be known until operation starts. However, we estimate that approximately 7 lb NMOL will be emitted each day when the system is installed in 2006. This estimate is based on: 963.75 ppmv (as hexane) NMOCs in LFG, based on a Tier 2 test in October 2003 Maximum anticipated LFG flow rate of 1,200 cfm (Figure 2) 98% destruction of NMOCs The production of LFG will increase gradually due to the continuing placement of refuse in the landfill. 3. Operating Schedule The LFG collection system and flare station will be designed to operate 24 hrs per day, 7 days per week, 52 weeks per year, except for short periods for maintenance. The LFG system will cease to collect LFG if electrical service fails. 4. Process Weight Foothill Sanitary Landfill 2 Public Works/Solid Waste Supplemental Information for ATC Application County of San Joaquin - March 10, 2005