CORRESPONDENCE_2008 (1/08 TO 6/08)

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2.1 MONTHLY (LFG CONTROL SYSTEM) 2.1.A Operation The contractor adjusts the LFG extraction wells as needed to maintain methane content below five percent (5%) by volume at the migration monitoring wells and surface emissions below 1000 parts per million. The flow rate and methane content of the gas delivered to the flare is recorded, and the BTU loading rate calculated to verify that the flare is operating within the AQMD permit conditions. Condensate handling systems shall be checked for proper operation and the total condensate volume destroyed is recorded. 2.1.B Monitoring The contractor will monitor the flare station as well as the LFG extraction wells. Monitored parameters include: Flare Station: 1 Date, time, and name of monitoring personnel. 2 Meteorological conditions (e.g., wind direction and velocity, barometric pressure, ambient temperature, general weather observations, etc.) 3 Methane, oxygen and carbon dioxide gas concentrations 4 Total LFG flow rate 5 Methane content 6 Blower inlet/outlet pressure and temperatures 7 Flare exit gas temperature 8 Carbon monoxide concentrations shall be measured by Draeger tube 9 Other data and maintenance items as identified on County's Monthly checklist. LFG Extraction Wells: 1 Date, time, and name of monitoring personnel 2 Meteorological conditions (e.g., wind direction and velocity, barometric pressure, ambient temperature, general weather observations, etc.) 3 Methane, oxygen and carbon dioxide gas concentrations 4 Wellhead/header pressure and flow rate (where applicable) 5 LFG temperature 6 The contractor will observe the LFGCCS blowers, flame arrester, flare, control panel, data recording devices, well field, and condensate drain, sumps, and pumping systems for the following: 7 Proper operation 8 Accessibility 9 Vandalism 10 Malfunctions 11 Leaks LFG Operation And Maintenance Pan San Joaquin County Corral Hollow Sanitary Landfill 7 Public Works Department March 31, 2008 Solid Waste Division