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Air Pollution Haze in Our National Parks

Case Overview

The 1977 Clean Air Act set a national goal of cleaning up dirty air in major national parks and wilderness areas. Decades later, only a small handful of states have submitted legally required plans to comply. The result: power plant and factory emissions continue to obscure views of beloved landmarks in national parks across the country including Shenandoah, Great Smoky Mountains, Glacier, Big Bend, Acadia, Sequoia, and Yosemite.

On October 21, 2008, Earthjustice filed suit on behalf of Environmental Defense Fund and National Parks Conservation Association over the U.S. Environmental Protection Agency's failure to enforce deadlines for the states to adopt these clean air plans. The Clean Air Act required states to submit enforceable plans to EPA by last December to clean up hazy skies in parks and wilderness areas. As of June 2008, only six had submitted plans, according to EPA sources. The Earthjustice letter gave notice of intent to sue EPA unless the agency enforces the deadline against delinquent states within 60 days.

According to the National Park Service, human-caused air pollution reduces visibility in most national parks throughout the country. Average visual range—the farthest a person can see on a given day—in most of the western United States is now about one-half to two-thirds of what it would be without man-made air pollution (about 140 miles). In most of the east, the average visual range is about one-fifth of what it would be under natural conditions (about 90 miles).

Earthjustice is suing EPA on behalf of conservation groups.

Case Updates

September 11, 2013 | Blog Post

My Window Seat To America The Threatened

“If you want to see the places we’ve helped protect, ask for a window seat.”

So reads my favorite Earthjustice message, decorating airports across the country. It’s true: 35,000 feet is a great vantage to see the forests, mountains and river canyons that are intact, unroaded and resilient thanks to our legal work with many allies.

September 10, 2013 | Blog Post

Watching Our National Parks Fade From View

Drops of sunscreen-infused sweat sting your eyes as you climb towards the summit; a small price to pay for the panoramic views that lie ahead.

But after finally conquering every switchback, your view of far-stretching vistas is obscured, not by sweat, but by haze created by coal-fired power plants – a polluting problem that afflicts many of America’s 400 national parks.

June 4, 2013 | Blog Post

Wake and Smile, the Nightmare is Over

In a vote last night, the Nevada Assembly approved SB123, a landmark bill that shifts the state away from coal-fired power. The bill closes Reid Gardner, directs NV Energy to eliminate 800 megawatts of coal-fired power generation from its portfolio, and mandates 350 megawatts of renewable energy development.