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13,000 gallons of leg find natural gas and will eliminate 30,000 tons of carbon dioxide every year. perhaps the only draw back is the costs. >> there are a lot of impurities we need to clean out of the landfill gas. that requires a multiple step purification system which makes it more expensive. >> in fact, this facility costs $15 million. supporters say if technology improves, cost also come down and more trash heaps will become fuel depots. >> we are turning landfills energy producing facility rather than just a landfill site. >> another one opens in california next year and other landfills ...

13,000 gallons of leg find natural gas and will eliminate 30,000 tons of carbon dioxide every year. perhaps the only draw back is the costs. >> there are a lot of impurities we need to clean out of the landfill gas. that requires a multiple step purification system which makes it more expensive. >> in fact, this facility costs $15 million. supporters say if technology improves, cost also come down and more trash heaps will become fuel depots. >> we are turning landfills energy producing facility rather than just a landfill site. >> another one opens in california next year and other landfills ...