EPA Being Urged To Tighten Up Ozone Standards

February 3, 2015 5:00 PM

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EPA Being Urged To Tighten Up Ozone Standards

It was the third and final public hearing before the U.S. Environmental Protection Agency makes a decision on a long-delayed new health standard for ozone, the invisible gas in smog that harms the lungs and worsens asthma and other chronic respiratory diseases.

The EPA says the current ozone standard of 75 parts per billion is too weak to protect public health. EPA Administrator Gina McCarthy has proposed a new standard in the range of 65 ppb to 70 ppb.

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