U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

§ 51.1317 - Fee programs for Severe and Extreme nonattainment areas that fail to attain.

For each area classified Severe or Extreme for a specific ozone NAAQS, the state shall submit a SIP revision within 10 years of the effective date of designation for that ozone NAAQS that meets the requirements of CAA section 185.

[83 FR 63033, Dec. 6, 2018]