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America's Largest Landfills

» more from Trash Inc.: The Secret Life of Garbage

Columbia Ridge Landfill

Location: Oregon
Tons Per Day: 6,000-8,000
Remaining Life: More than 20 years
Operator: Waste Management
Landfill Gas: Seattle residents recycle about half of their waste. The rest, about 400,000 tons a year, gets put on trains and shipped to Columbia Ridge, where it decomposes into methane gas. That gas is then burned to generate electricity. Seattle City Light is buying the entire output — enough to power more than 5,600 homes.

Source: Wunderlich Securities, Waste Management