America's Most Polluted Park

The air quality in Sequoia-Kings Canyon has dropped so rapidly that it's surpassing even Grand Canyon and Joshua Tree as the most polluted.

1 minute read

September 16, 2005, 9:00 AM PDT

By Brenda Meyer

"Over the past few years, ozone at Sequoia for an average of 56 days annually has exceeded the national clean-air benchmark established by the U.S. Environmental Protection Agency. Stated more explicitly, ozone reaches or exceeds the standard of .08 ppm eight hours a day, one day out of six during the year. It is a level that is harmful for human health, and it is anathema to the aesthetics of a national park. On clear days you can see 100 miles from Beetle Rock, but park officials say visibility on the worst summer days is less than 10 miles."

FULL STORY: Polluted paradise

Thursday, September 15, 2005 in The Los Angeles Times

Environment California

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