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EPA Will Reconsider the Ozone NAAQS — What Is An Adequate Margin of Safety, Anyway?

Law and Environment

On Friday, EPA announced that it was reconsidering its 2020 decision to leave the National Ambient Air Quality Standards for ozone unchanged. However, EPA stated that it: will reconsider the decision to retain the ozone NAAQS in a manner that adheres to rigorous standards of scientific integrity.

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Improving EPA’s Latest Ozone Transport Rule

Acoel

The downwind air quality benefits are minimal. The proposed rule would provide de minimus air quality benefits in downwind areas with extremely high costs – estimated by EPA at $22 billion discounted 2016 dollars for the 2023-2042 period. enjoyed ozone reductions of 3 to 5 ppb or more. ppb by 2025. EPA estimated that: .

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Protecting Public Health Is Complicated. But Science Can Help, and the Time Is Now.

Union of Concerned Scientists

However, since major US environmental laws are enacted to protect the air, water, and land separately (i.e. the Clean Air Act, the Clean Water Act, the Safe Drinking Water Act), as a result, EPA programs are often implemented narrowly, not holistically.

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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.

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Other 2023 N.C. Environmental Legislation

Smith Enviorment

Some background — As required by the Clean Air Act, North Carolina has a State Implementation Plan (SIP) for ozone pollution describing how the state will meet the federal ozone standard. ’s current ozone SIP based on vehicle emission inspections in 19 N.C.

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Supreme Court Sidelines Science, Threatens Public Health: These Rules-in-Progress Show What’s at Stake

Union of Concerned Scientists

Hydrofluorocarbons (HFCs) were developed to replace a type of chemical that impacted the ozone layer in our upper atmosphere, but these replacements are potent greenhouse gases. This is a major federal law that governs if a chemical will be regulated, limited, or even banned.

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The Origins of Climate Awareness in the Legal Academy

Legal Planet

Today, climate change is the central, though by no means the only, concern in environmental law. The earliest mentions of these terms in the law review literature came in the late 1970s, and only one of the pre-1985 discussions took a comprehensive look at the problem. Third, there was so much else going on in environmental law.