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A coal-fired boiler near Wausau will be shut down while another will burn natural gas instead under a plan announced Friday by Green Bay’s power company.

Wisconsin Public Service Corp. said it will stop operating the 60-megawatt Weston 1 generating unit built in 1954 by June 2015, while Weston 2, built in 1960, would be converted to burn natural gas in 2015.

When it was built, the 75-megawatt unit was designed with the capability to burn natural gas as well as coal.

The same utility announced recently it will retire two older coal boilers at its downtown Green Bay power plant, known as Pulliam.

The retirements are part of a settlement with the Environmental Protection Agency that aims to reduce air pollution from aging coal-fired power plants. It’s the latest in a series of settlement EPA has reached with utilities including Wisconsin Power and Light Co. in Madison and We Energies of Milwaukee.