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New Life for Old Landfills

from Winston-Salem Journal

The EPA estimates that the U.S. had about 8,000 municipal solid-waste landfills in 1988. By 2013, the total had fallen to 1,908, explaining why municipalities are investing to preserve their remaining capacity for as long as they can. Consider Winston-Salem, NC's efforts to extend the life of its Hanes Mill Road landfill, which converts greenhouse gas to electricity for utilities. It's building a new 15-acre, $4.7-million cell and installing an 18-inch clay liner, a geosynthetic clay liner, a high-density plastic liner, a drainage layer, and a runoff-diversion system. It's also relying on GPS data to determine how to compact waste, a technique that has allowed the city to increase waste density from 1,160 pounds per cubic yard in 2015 to 1,380 pounds per cubic yard this year. Could you assist your landfill clients with techniques like these? more

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