Clean Air – Page 4 – Environmental and Energy Law Program

Regulatory Tracker

National Ambient Air Quality Standards (NAAQS) for Ozone

On March 12, 2025, EPA announced a reconsideration of the NAAQS.

May 1, 2025

Regulatory Tracker

Petroleum Refinery Sector Rule (NESHAPs / NSPS)

The Biden EPA amended the 2015 standards for refineries. On Mar. 12, the Trump administration slated these standards for rollback.

April 10, 2025

Legal Analysis

Clean Fuel Standard Directed Benefit Mechanisms to Promote Equity

New paper co-authored by Abby Husselbee looks at how CFS programs could be designed to direct public health, mobility, and economic benefits.

April 3, 2025

Regulatory Tracker

National Ambient Air Quality Standards (NAAQS) Review

EPA sets NAAQS for six common and harmful pollutants: carbon monoxide, lead, PM, ozone, nitrogen dioxide, and sulfur dioxide.

March 12, 2025

Legal Analysis

The President Targets EPA’s Authority to Address Climate Change — Will He Succeed?

Jody Freeman and Carrie Jenks on the future of the endangerment finding.

January 29, 2025

Legal Analysis

Final Rule Implementing the Waste Emissions Charge for Petroleum and Natural Gas Systems

Analysis of the changes EPA made in the final rule in response to public comments and reasoning for the changes.

December 2, 2024

Explainer

NAAQS Overview

The National Ambient Air Quality Standards program is the cornerstone of EPA’s work to protect public health and the environment.

August 29, 2024

Legal Analysis

The Supreme Court Pauses the Good Neighbor Plan

The decision continues an alarming trend of the Court issuing decisions under its emergency docket about important public health rules without the benefit of full briefing and engagement with the technical record.

July 2, 2024

Legal Analysis

Compliance Timing for EPA’s Power Sector Rules for Coal-Fired Power Plants

June 16, 2024