Implementation of Vertical Landfill Expansion

by J. R. Guerriero, Malcolm Pirnie Inc, White Plains, United States,
G. W. Druback, Malcolm Pirnie Inc, White Plains, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


Montgomery County, Maryland, proposed to implement a vertical expansion or 'piggyback' design for the County's municipal solid waste landfill. The expansion would provide the County with an additional 20 years of disposal capacity. Initially the landfill will receive municipal solid waste, but after startup of the resource recovery facility it would receive nonprocessible and bypass waste and ash residue in separate cells. The landfill design accounted for several unique features. Due to the fast-track schedule (design and permitting in one year), it became clear that the project could not be implemented within the required time frame. A vertical ridge expansion plan, which required a permit modification, gave the landfill an additional 18 to 24 months of capacity. Since the County was actively seeking a new landfill site, the expansion design included provisions for early closure during any stage of the filling process. The vertical expansion was to be constructed upon solid waste which had been landfilled from June 1982 through approximately the end of 1990. The design addressed environmental and regulatory requirements for issues such as stability and integrity and provided a state-of-the-art landfill capable of meeting the needs of the County.

Subject Headings: Landfills | Municipal wastes | Solid wastes | Waste disposal | Waste management | Recycling | Ashes | Scheduling | Maryland | United States

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