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Hunton Andrews Kurth LLP | USA | 25 Jul 2023

Possible Stringent Secondary NAAQS Raise Implementation Questions

EPA sets and implements primary and secondary National Ambient Air Quality Standards (NAAQS) for six common air pollutants. Primary NAAQS protect the…
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Lexology PRO | China, Global, India, etc. | 25 Aug 2022

Climate change mitigation: what are the “big polluters” doing?

What legislative and regulatory changes authorities in China, the US and India are prioritising in the battle to combat climate change and pollution in 2022.
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Sidley Austin LLP | USA | 5 Apr 2022

EPA Proposes “Good Neighbor” Plan Addressing Regional Ozone Transport for the 2015 Ozone National Ambient Air Quality Standard

On April 6, 2022, the U.S. Environmental Protection Agency (EPA) is scheduled to publish its proposed Federal Implementation Plan Addressing Ozone…
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Holland & Hart LLP | USA | 17 Apr 2020

EPA Proposes to Retain Particulate Matter Standards of Importance to Industries in Arid West

On April 14, 2020, the Environmental Protection Agency (EPA) proposed to retain the current National Ambient Air Quality Standards (NAAQS) for…
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Michael Best & Friedrich LLP | USA | 29 Apr 2019

EPA Shifts Policy for Shielding Malfunction Events from Fines Under Clean Air Act

In a shift from Obama-era guidance, the EPA published in today’s Federal Register a proposal to approve affirmative defense provisions in Texas’s…
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Vorys Sater Seymour and Pease LLP | USA | 21 Nov 2018

USEPA Proposes Revision to Policy on Ambient Air Exclusion

U.S EPA recently issued a draft guidance document titled Revised Policy on Exclusions from “Ambient Air” (Draft Guidance) in which the Agency revises…
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Hunton Andrews Kurth LLP | USA | 30 Oct 2018

Why Should I Intervene?

EPA has finalized a regulation you can live with, but someone dissatisfied with that result has sued the Agency. Should you intervene to defend EPA’s…
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Sidley Austin LLP | USA | 23 Jul 2018

EPA proposes to reject Delaware and Maryland 126(b) petitions

From July to November 2016, Delaware and Maryland respectively (and together) filed Clean Air Act 126(b) petitions to the Environmental Protection Agency (EPA) alleging that upwind states such as Pennsylvania, West Virginia, Indiana, Kentucky and Ohio were significantly contributing to their non-attainment of eight-hour ozone national ambient air quality standards. The EPA recently published......
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Winston & Strawn LLP | USA | 20 Jun 2018

EPA Proposes SO2 NAAQS Remain Same, Looks for Alternatives to Implementation

On May 25, 2018, Environmental Protection Agency (EPA) Administrator Scott Pruitt signed a proposed rule titled “Review of the Primary National…
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Hunton Andrews Kurth LLP | USA | 24 May 2018

2018: A Banner Year for Regulatory Developments on Ozone NAAQS

2018 is turning out to be a banner year for nationally applicable developments—both judicial and administrative—with regard to National Ambient Air…
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