Pollution from two of Utah’s oldest, dirtiest coal-fired power plants – Rocky Mountain Power’s Hunter and Huntington facilities – affects the air in eight of the Southwest’s national parks: Grand Canyon, Zion, Bryce, Capitol Reef, Arches, Canyonlands, Mesa Verde, and Black Canyon of the Gunnison. For years, Utah has refused to reduce this pollution by requiring the best controls found at many other coal plants throughout the West.

The state of Utah was required by law to submit a plan to the EPA to reduce this pollution in order to comply with the Clean Air Act’s Regional Haze Rule, which requires states to develop plans to reduce air pollution in their borders affecting protected national parks. Now the EPA must decide between two plans to address Utah’s regional haze.

The “Clean Parks” plan would cut nitrogen oxide emissions from four units at Hunter and Huntington coal plants by 76%. The other option, is the state’s ‘Business-as-Usual’ proposal, which requires no additional reductions in emissions from these plants.

The EPA has required similar pollution control technology at many comparable coal plants throughout the United States, including Arizona, Colorado, and Wyoming. Now is the time to institute a real plan for emission reductions at the Hunter and Huntington coal plants consistent with the EPA’s previous actions in Utah’s neighboring states.

The choice is clear. The EPA must choose the “Clean Parks” plan to achieve the greatest visibility improvements at some of the lowest costs for reducing this pollution.


  • More than 14,000 Supporters Sent Letters to EPA

    Mar 2016

    NPCA supporters sent letters to the U.S. EPA asking it to reject Utah’s regional haze plan and require the best technology to cut nitrogen oxide pollution at the Hunter and Huntington plants.

Sign Up

Get Action Alerts

action alerts graphic

Want national parks in your inbox? Sign up for NPCA email updates to receive news, features, and opportunities to make a difference! You can unsubscribe at any time.