The Environmental Protection Agency is hosting public forums this week on proposed reductions in emission levels at the Navajo Generating Station.

Operators of the coal power plant are proposing reductions in nitrogen oxide output and pollutants that affect visibility in nearby national parks and wilderness areas, including the Grand Canyon National Park and the Vermillion Cliffs.

EPA officials said they hope the nitrogen oxide-reducing equipment, which they can retrofit to the plant, will reduce pollution drastically.

“Our original retrofit technology proposal required an emission reduction of 28,500 tons per year reduction in nitrogen oxide,” said Colleen McKaughan, associate director of air division at EPA. “That’s what we’re looking for in terms of any other alternative that would be put forth.”

That’s a reduction of nearly 80 percent from where the generating station was five years ago.

Five forums are being held around the state this week, including one in Tucson at Pima Community College’s West Campus on Friday, Nov. 15 from 6 to 9 p.m.