The Butler County Landfill in David City is now converting landfill gas to natural gas.

Aria Energy on Wednesday announced the construction of a landfill gas to renewable natural gas project at the Waste Connections-owned Butler County Landfill in David City.

Michigan-based Aria said the project processes and purifies up to 1,000 cubic feet per minute of landfill gas, which is about 50 percent methane, into pipeline-quality natural gas.

Natural gas produced by the project is transported to the interstate pipeline through Black Hills Energy’s distribution system where it is sold to Constellation Energy, with an intended use by Constellation’s customers as fuel for natural gas vehicle fleets.

According to U.S. Environmental Protection Agency calculations, the Butler County project will directly reduce emissions from 5,500 tons of methane and avoid nearly 14,000 tons of carbon dioxide emissions per year, the equivalent of removing 600 passenger vehicles from the road.

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