Daily Cover Challenges and Solutions at Puente Hills Landfill
Abstract
Time constraints in working with daily cover have been among the main concerns at Puente Hills. The landfill serving Los Angeles County California was one of the world’s largest, and has until recently received up to a maximum allowable daily limit of 13,200 tons (12,000 tonnes) of municipal solid waste a day. With that waste intake and being a “canyon fill”, large and steep waste slopes of a total area of approximately 60,000 ft2 (5,500 m 2 ) with intermediate deck of approximately 40,000 ft2 (3,750 m 2 ) have often needed coverage by the end of each working day. Not only is quick coverage of a large area important at Puente Hills, but the daily cover for many of the waste slopes has been required to provide a prolonged period of coverage - of up to 4 weeks or more - because of large fill layers, long operational cycle and the unpredictable relocation of waste disposal area during the winter rainy season. The Districts evaluated many Alternative Daily Cover (ADC) materials against the cover challenge at Puente Hills Landfill and concluded that the EPI Environmental Products’ Extended Enviro™ Cover (EEC), a somewhat longer lasting non-reusable plastic film, with the company’s Model 800 self-propelled Deployer best suited their needs. The landfill’s experience and refinement of their daily cover requirements over the last decade is described in this case study.
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