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EPA Proposes Significant Emission Controls at Navajo Coal Plant

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The EPA this week took a significant step toward reducing harmful emissions from the Navajo Generating Station (NGS), one of the largest coal power plants in the southwest, although the emission reductions will be delayed by a compromise between the EPA and the plant owners.  Located in Page, Arizona, the NGS ships its 2,250 megawatts of energy to multiple utility companies, and spews over 19 million tons of carbon dioxide each year.  The EPA's proposed rule specifically targets NGS' nitrogen oxide (NOx) emissions, which adversely impact our respiratory health and deposit a smoggy haze in 11 National Parks and wilderness areas in the southwest, including Grand Canyon National Park.

The EPA's proposed rule would reduce NOx emissions from NGS by 84%, equal to 28,500 tons each year, but compromises with the plant owners by extending a 2018 deadline to install selective catalytic reduction (SCR) scrubber technology until the year 2023, according to an EPA press release.  SCR t…