Upwind states must reduce emissions that contribute signficantly to nonattainment of the PM2.5 or 8-hour ozone national ambient air quality standards in downwind states.

Contributed in 2010 by Marcia Gelpe
You've come to a rule . Check out the authorities below. When you find one you like, add it to your SpinDoc. more...
Please sign in or sign up to see the authorities.
Contribution Suggestions
vouch for authority for rule...
If a pollutant is classified as a known, probable or possible human carcinogen, the standard must be revised if needed to reduce the lifetime...
complete authority for rule...
Whenever the Administrator is presented with evidence indicating that a violation may exist, he must make a finding as to whether there is a...
vouch for authority for rule...
The federal government can criminally enforce all provisions in a SIP that have been approved by EPA.