2025 Clean Air Act Nitrogen Oxides 
Union of Concerned Scientists
AUGUST 21, 2024
While the changes are slated to go into effect for facilities placed in service on or after January 1, 2025, the Department of the Treasury (Treasury) and the Internal Revenue Service (IRS) still have some complex—and deeply consequential—issues left to resolve. Most notably, this reference covers direct and significant indirect emissions.
PA Environment Daily
FEBRUARY 14, 2025
The Department of Environmental Protection published notice in the February 15 PA Bulletin inviting comments on an analysis designating an Exceptional Event under the federal Clean Air Act related to Canadian wildfires in June and July 2023 and their impact on air quality in Pennsylvania.
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Union of Concerned Scientists
FEBRUARY 28, 2025
In 1970, Lee Iacocca, then Ford’s executive vice president, said that the Clean Air Acts limits on tailpipe pollution “could prevent continued production of automobiles” and “do irreparable damage to the American economy. Data from California Energy Commissions New ZEV Sales in California dataset.
Union of Concerned Scientists
FEBRUARY 28, 2025
In 1970, Lee Iacocca, then Ford’s executive vice president, said that the Clean Air Acts limits on tailpipe pollution “could prevent continued production of automobiles” and “do irreparable damage to the American economy. Data from California Energy Commissions New ZEV Sales in California dataset.
Union of Concerned Scientists
JANUARY 21, 2025
California is allowed to set standards stronger than the federal government under the 1970 Clean Air Act provisions in recognition that CA, and many other states which have adopted CA standards , serve an important role as laboratories of innovation controlling air pollution in novel ways. In the U.S., In the U.S.,
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