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Foothill Landfill Storm Water Pollution Prevention Plan Page 41 8.1.2 Preventive Maintenance In keeping with the permit requirements for preventative maintenance, San Joaquin County implements the following practices: Table 8.1.2 – Preventative Maintenance Measures Row No. Minimum Permit Requirement Facility-Specific Implementation 1. Identify all equipment and systems used outdoors that may spill or leak pollutants; • Landfill gas energy plant • Landfill gas and leachate extraction wells and piping • Landfill vehicles and equipment (operation, maintenance, repair, washing and fueling) • Fuel in aboveground storage tanks 2. Observe the identified equipment and systems to detect leaks, or identify conditions that may result in the development of leaks; Regular maintenance of the landfill soil cover includes the following activities: • Fill ponding and low spot areas noticed during inspection with soil from the borrow area. • Repair erosion on the soil cover. • Maintain vegetation on the vegetated erosion resistant layer per the Vegetation Maintenance Plan. • Fill holes created by rodents; and • Fill visible cracks in the vegetative layer. 3. Establish an appropriate schedule for maintenance of identified equipment and systems; and, 4. Establish procedures for prompt maintenance and repair of equipment, and maintenance of systems when conditions exist that may result in the development of spills or leaks. Maintenance of Landfill Gas Energy Plant by Ameresco Inc. personnel include the following activity: • Visual inspections of facility equipment and AST exteriors; any deficiencies noted; and repairs or replacement performed in a timely manner. • A 300-gal temporary tote container on wheels is used to receive propylene glycol coolant when the engine cooling systems are drained for maintenance; the coolant is returned to the engines when maintenance is complete; and • Condensate from landfill gas is collected in an 1130-gal underground storage tank and is either pumped into the 10,000-gal leachate AST for disposal or to use as dust suppression water in the lined landfill or is returned to the leachate system of a lined landfill area. Maintenance of the LFG extraction wells, and piping includes the following activities: • Fixing low spots in laterals and headers that obstruct LFG flow when filled with condensate. • Securing LFG pipe (as needed). • Clearing vegetation around headers to protect headers during grass fires (annually); and • Replacing damaged well heads (as needed). Maintenance of vehicles and equipment includes the following activities: • Placement and use of drip pans (as needed). • Maintenance of containment devices; and • Performing regular Vehicle Condition Reports (VCRs).