April 19, 2018 News Release: City moves to 100% methane recovery, creating triple-win for public: revenue, climate gains and cleaner air. Environmental Services is announcing a groundbreaking project that will convert waste methane from the city’s sewage treatment process into renewable natural gas. The clean, locally-produced fuel will be sold in Portland and elsewhere to replace diesel fuel in trucks.
The project will cut greenhouse gas emissions by 21,000 tons a year, more than any other single city project to date.
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