The Associated Press

A South Dakota landfill that was considered ahead of the curve five years ago when it installed a system to capture gas given off by decomposing trash and turn it into energy now opposes proposed federal regulations that would require large landfills to control methane gas emissions.

The Sioux Falls Regional Landfill, which serves five counties, has been collecting methane since 2009 and selling it to an ethanol plant to burn as fuel.

Proposed federal rules could require upgrades to the landfill’s system and might jeopardize a financial incentive it collects for voluntarily reducing emissions, Landfill Superintendent Dave McElroy told the Argus Leader newspaper.

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