Nitrogen oxides

Implementation of the Revoked 1997 8-Hour Ozone National Ambient Air Quality Standards; Updates to 40 CFR Part 52 for Areas That Attained by the Attainment Date; Withdrawal of Direct Final Rule

Due to the receipt of adverse comment, the Environmental Protection Agency (EPA) is withdrawing the October 9, 2020, direct final rule to update the Code of Federal Regulations (CFR) to codify its findings that nine areas in four states attained the revoked 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment dates. The EPA will address all comments received in a subsequent final rule for which the EPA will not institute a second comment period.

Publication Date: 
Wednesday, December 9, 2020 - 4:00am

Revised Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS

This proposed action is taken in response to the United States Court of Appeals for the District of Columbia Circuit's (D.C. Circuit) remand of the Cross-State Air Pollution Rule (CSAPR) Update in Wisconsin v. EPA on September 13, 2019. The CSAPR Update finalized Federal Implementation Plans (FIPs) for 22 states to address their interstate pollution-transport obligations under the Clean Air Act (CAA) for the 2008 ozone National Ambient Air Quality Standards (NAAQS). The D.C.

Publication Date: 
Friday, October 30, 2020 - 4:00am

Implementation of the Revoked 1997 8-Hour Ozone National Ambient Air Quality Standards; Updates to 40 CFR Part 52 for Areas That Attained by the Attainment Date

The Environmental Protection Agency (EPA) is updating part 52 of title 40, chapter 1 of the Code of Federal Regulations (CFR) to codify its findings that nine areas in four states attained the revoked 1997 8-hour ozone National Ambient Air Quality Standards (herein referred to as the 1997 ozone NAAQS) by the applicable attainment dates. In February 2019, EPA Regional Offices sent letters to the affected states to communicate the EPA's findings.

Publication Date: 
Friday, October 9, 2020 - 4:00am

Implementation of the Revoked 1997 8-Hour Ozone National Ambient Air Quality Standards; Updates for Areas that Attained by the Attainment Date

The Environmental Protection Agency (EPA) is proposing updates to the Code of Federal Regulations (CFR) to codify its findings that nine areas in four states attained the revoked 1997 8-hour ozone National Ambient Air Quality Standards (herein referred to as the 1997 ozone NAAQS) by the applicable attainment dates. The parallel direct final rule is published in the ``Rules and Regulations'' section of this issue of the Federal Register because the Agency views this as a noncontroversial action.

Publication Date: 
Friday, October 9, 2020 - 4:00am