San Diego County Meets National Air Quality Standard for Smog

LOS ANGELES – The U.S. Environmental Protection Agency announced that San Diego County has met the 1997 national health-based air quality standard for smog, also known as ground-level ozone. In addition, EPA has approved the state’s plan to maintain clean air standards for the more than three million residents of the San Diego area View full post on U.S. EPA Air News

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