By Krishnadev Calamur
The U.S. Environmental Protection Agency unveiled new rules today to reduce emission levels for smog-causing ozone, which is linked to asthma and other health problems.
The draft measure calls for lowering the threshold for ozone from 75 parts per billion to between 65 ppb to 70 ppb. The agency said it would take comments on an ozone level as low as 60 ppb.
"Bringing ozone pollution standards in line with the latest science will clean up our air, improve access to crucial air quality information, and protect those most at-risk," EPA Administrator Gina McCarthy said in a statement. "It empowers the American people with updated air quality information to protect our loved ones — because whether we work or play outdoors — we deserve to know the air we breathe is safe."
The Clean Air Act requires the agency to review standards every five year. The ozone levels were set at 75 ppb in 2008 by President George W. Bush's administration.