Law and Environment
NOVEMBER 1, 2021
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.
Union of Concerned Scientists
DECEMBER 1, 2022
California has a longstanding leadership role on transportation pollution, and the Clean Air Act grants the state the right to set strong vehicle emissions standards. We in Colorado have many days of problematic ozone. We need every tool we can apply to gain healthier air. Traffic is a major concern. Washington.
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PA Environment Daily
JANUARY 24, 2023
and numerous affiliated companies (collectively, GWRSI) for violation of Clean Air Act (CAA) locomotive regulations. NOx is a contributor to the formation of summer ozone, and particulate matter smaller than 2.5 microns has been shown to cause lung damage and cancer.
Union of Concerned Scientists
JULY 9, 2024
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. Phasedown of hydrofluorocarbons There are several rules that inform and facilitate the phasedown of hydrofluorocarbons.
Union of Concerned Scientists
APRIL 20, 2023
Multiple lines of analysis make clear that regardless of how cheap wind and solar power get, without directly addressing pollution from coal and gas plants, the country’s clean energy transition will not happen fast enough. Section 111 of the Clean Air Act constrains how EPA sets standards—but gives states wide latitude in implementation.
Union of Concerned Scientists
SEPTEMBER 30, 2024
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.
Legal Planet
OCTOBER 26, 2022
discussing the ways in which local air districts can take action to end harmful air pollution from building appliances. As we explained in our brief, under the federal Clean Air Act, states are required to submit SIPs detailing strategies to come into attainment with federal air quality standards for pollutants like ozone and PM2.5.
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