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Permit Application for Authority to Construct Landfill Gas Collection System and Flare Station At the Foothill Sanitary Landfill San Joaquin Valley Air Pollution Control District Facility ID N-4070 March 10, 2005 The following items refer to the Supplemental Information Required With Each Application, as identified in the Instructions for Application for Authority to Construct and Permit to Operate (PTO). Referenced figures can be found in the "Landfill Gas Collection System Design Plan", submitted concurrently with this application. Attached please find: Supplemental Application Form — Flare Equipment Location Drawing or Plot Plan Equipment Description The landfill gas (LFG) collection system will be designed to collect and treat 2000 cfm LFG, which is approximately twice the estimated LFG production at the site at the time of installation. Initial construction will include vertical LFG wells installed in the Module "I" area of the landfill (Figures 1 and 3). Vertical LFG wells will be drilled on 600 ft centers to nominally 10 feet above the bottom of the landfill or 100 feet, whichever is shallower. Each well will be provided with provision for adjusting the rate of collection of LFG, and monitoring the quality and temperature of the collected LFG in accordance with 40 CFR Part 60 (Figure 4). Horizontal wells will be installed in Module 1 refuse as that fill progresses. These wells will have adjustment features similar to that of the vertical wells (Figure S). LFG will be collected from the wells via a pipe system (Figure 3). In general, these pipes will be located above ground and off refuse to the extent possible. From the gas collection headers, the LFG will flow to a flare station that will include two centrifugal blowers, an automatic shut-off valve, a candlestick (open) flare, and controls (Figure 6). Foothill Sanitary Landfill 1 Public Works/Solid Waste Supplemental Information for ATC Application County of San Joaquin - March 10, 2005