DeKalb County recently broke ground on a renewable natural gas processing facility that is designed to provide a clean and cheap fuel to county sanitation trucks.

The facility is being built at the Seminole Road Landfill through a $7.8 million grant from the federal stimulus program. Under it, the county will convert 70 trucks to run on the methane-turned-fuel instead of diesel, a savings of $3 million over eight years. The county plans to adapt its entire 306-truck fleet to the natural gas over that period.