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Air Quality Standards Environmental Protection Agency (EPA)

Williams Mullen

Exceptional Events Part of North Carolina Particulate Air Quality Attainment Designation

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Effective May 2024, EPA tightened the annual health-based National Ambient Air Quality  Standard (NAAQS) for fine particulate matter (PM2.5) from 12.0 µg/m3 to 9.0 µg/m3. This change was made after a review of the available...more

Williams Mullen

Environmental Notes - April 2025

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Under the Clean Air Act, sources frequently must undergo “New Source Review” (NSR) permitting, which is a pre-construction permitting program. NSR establishes requirements for new or modified sources prior to initiating...more

Holland & Knight LLP

EPA Announces Deregulatory Initiative to "Power the Great American Comeback"

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U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin announced on March 12, 2025, that EPA will undertake 31 distinct actions in an effort to advance President Donald Trump's Day One executive orders (EOs) to...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Nominee for U.S. Environmental Protection Agency Administrator - Lee Zeldin: National Association of Clean Air Agencies Letter of...

The National Association of Clean Air Agencies (“NACAA”) transmitted a December 18, 2024, letter to Lee Zeldin. Mr. Zeldin is President Trump’s nominee for Administrator of the United States Environmental Protection...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Compendium of Tools/Methods to Estimate Environmental Benefits for Nature-Based Solutions: U.S. Environmental Protection Agency...

The United States Environmental Protection Agency (“EPA”) issued a November 2024 report titled: A Compendium of Tools and Methods to Estimate Environmental Benefits for Nature-Based Solutions - Environmental Benefits...more

McGlinchey Stafford

EPA Under a Second Trump Presidency: The Good, Bad, and Ugly

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A return to the presidency by Donald Trump has raised questions about the future of the U.S. Environmental Protection Agency (EPA) and the broader landscape of environmental policy in the United States. Given Trump’s past...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Ozone/Clean Air Act: Kentucky Files Judicial Action Against U.S. Environmental Protection Agency for Alleged Delay in NAAQS...

The Commonwealth of Kentucky, Energy and Environment Cabinet and Louisville Metro Air and Pollution Control District (collectively, “Kentucky”) filed a Complaint in the United States District Court for the Western District of...more

Goldberg Segalla

Frustrated by EPA’s Delay on Air Quality, Environmental Groups Tell the Agency: “NOx it Off!”

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Nitrogen Oxide (NOx) is a very reactive, brown-hued gas commonly produced when fuels are burned at high temperature by motor vehicles, chemical plants, etc. Industries will often intentionally oxidize NOx to produce lacquers,...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Nitrogen Oxides/Clean Air Act: Center for Biological Diversity and U.S. Environmental Protection Agency Enter into Consent Decree...

The United States Environmental Protection Agency (“EPA”) and the Center for Biological Diversity (“CBD”) entered into an October 28th Consent Decree addressing an issue arising out of Section 108 and 109 of the Clean Air Act...more

Morrison & Foerster LLP

MoFo’s State + Local Government Enforcement Newsletter - October 2024

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Morrison Foerster’s State and Local Government Task Force is pleased to provide our bimonthly newsletter summarizing some of the most important and interesting developments from State Attorneys General across the country and...more

DLA Piper

Industrials Regulatory News and Trends - October 2024 #2

DLA Piper on

Welcome to Industrials Regulatory News and Trends. In this regular bulletin, DLA Piper lawyers provide concise updates on key developments in the industrials sector to help you navigate the ever-changing business, legal, and...more

Holland & Hart LLP

The Montana Environmental Protection Act (MEPA) and the Upcoming 2025 Legislative Session

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What’s Happening with MEPA Right Now (And Why You Should Care) - If you need a permit from a Montana state agency, you have a project on state land, or you need the state to take any kind of action to complete your...more

ArentFox Schiff

EPA Approves South Coast Air Quality Management District’s Warehouse Indirect Source Rule

ArentFox Schiff on

On September 11, the US Environmental Protection Agency (EPA) took final action approving a revision to California’s State Implementation Plan (SIP) to include the South Coast Air Quality Management District’s (SCAQMD)...more

Cozen O'Connor

The State AG Report – 8.29.2024

Cozen O'Connor on

Here are curated AG and federal regulatory news stories highlighting key areas in which state and federal regulators’ decisions are having an impact across the US: •Missouri AG Investigates Hack of National Public Data - ...more

Cozen O'Connor

Ohio and Kansas AGs Seek Stay of EPA Air Quality Rule by the Supreme Court

Cozen O'Connor on

Ohio AG Dave Yost and Kansas AG Kris Kobach have completed briefing on their emergency application with the U.S. Supreme Court to stay the EPA’s “Reconsideration of the National Ambient Air Quality Standards for Particulate...more

Allen Matkins

California Environmental Law & Policy Update 8.23.24

Allen Matkins on

Three years after a massive spill at a Los Angeles wastewater facility sent millions of gallons of sewage into Santa Monica Bay, the city has agreed to spend more than $20 million on improvements to remedy the environmental...more

Nossaman LLP

Supreme Court Clarifies Requirement for Agencies to Respond to Public Comments on Proposed Rulemakings

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The week of June 23, 2024, in Ohio v. Environmental Protection Agency, the U.S. Supreme Court clarified in a 5-4 decision that if a federal agency fails to provide a reasoned response to comments raised during the rulemaking...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Arkansas Ambient Air Monitoring Network: Annual Network Plan for 2024-2025

The Arkansas Department of Energy and Environment – Division of Environmental Quality (“DEQ”) submitted on July 1st to the United States Environmental Protection Agency (“EPA”) a document titled: Arkansas Ambient Air...more

Eversheds Sutherland (US) LLP

Global ESG Insights - May 2024

Welcome to the latest edition of our monthly ESG Insights providing you with a summary of the key developments from around the world. Global - IFRS Foundation releases jurisdictional adoption guide for ISSB Standards- On...more

Saul Ewing LLP

Supreme Court Temporarily Halts EPA’s “Good Neighbor” Air Pollution Rule

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The Clean Air Act (“CAA”) envisions states and the federal government working together to improve air quality. Under the CAA, states must develop State Implementation Plans (“SIPs”) to implement National Ambient Air Quality...more

Nutter McClennen & Fish LLP

Environment & Energy Insights (July 2024)

Welcome to the July edition of Nutter’s Environment & Energy Insights, a monthly update of current trends in environment and energy law. The Supreme Court has been busy lately, issuing several opinions that will impact...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Title V/Clean Air Act: Sierra Club Petition to Object Filed Addressing Pinal County, Arizona, Generating Station

The Sierra Club filed a May 13th Title V Petition to Object (“Petition”) before the United States Environmental Protection Agency (“EPA”) related to the Salt River Project Agricultural Improvement and Power District (“SRP”). ...more

Allen Matkins

California Environmental Law & Policy Update 6.14.24

Allen Matkins on

Chemical and manufacturing groups sued the federal government on Monday over a landmark drinking water standard that would require cleanup of certain PFAS, so-called forever chemicals, which have been linked to cancer and...more

WilmerHale

EPA and DOI Regulatory Roundup: Air Toxics and Carbon, Coal Ash, Wastewater, Methane, and Offshore Wind

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The Biden-Harris Administration recently issued a suite of new rules aimed at addressing water and air quality, reducing methane emissions, protecting environmental justice communities, and accelerating the nation’s...more

Mintz - ML Strategies

Hot EPA Issues Heading into the Election Year

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As we head into the 2024 election season, Congress and the executive branch continue to advance various policies related to the Environmental Protection Agency (EPA). In addition to the Fiscal Year 2025 appropriation for the...more

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