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Why UCS Supporters Are Pressing EPA to Let California Enforce Its Truck Pollution Rules

Union of Concerned Scientists

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. While the waiver addresses California’s ability to enforce its rules, the Clean Air Act also allows other states the ability to adopt California’s policies.

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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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Unraveling LA’s Hydrogen Combustion Experiment

Legal Planet

But with the recent influx of government incentives for hydrogen production, new and improving production and storage technologies, and greater political will than ever before, H 2 ’s reputation is gaining favor. All this is not to say there is no place for hydrogen in a clean energy future.

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The U.S. Supreme Court & Environmental Law in 2024

Legal Planet

” The Supreme Court itself announced it in a landmark 1984 Clean Air Act decision that over the past 40 years has become a cornerstone principle of modern administrative law. However, the underlying and far more important feature of these cases is the companies’ challenge to the so-called “Chevron Doctrine.”

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The Supreme Court’s Latest Decision Is a Blow to Stopping Climate Change

Union of Concerned Scientists

Had the court ruled fully in favor of the EPA— or not taken the case at all —a much more meaningful dent in power plant carbon emissions would be within reach, while also delivering much greater reductions in other dangerous co-pollutants from burning fossil fuels such as particulate matter, mercury, nitrogen oxides and sulfur dioxide.

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Stronger Fuel Economy Standards Are Needed to Clean Up Combustion Vehicles

Union of Concerned Scientists

However, with the oil crisis in the rear-view mirror, then-President Ronald Reagan acceded to requests from Ford and General Motors to reduce fuel economy standards for a few years, and the political will to strengthen the program petered out.

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The evolution of US NOx standards for cars

Environment, Law, and History

Dan Farber at Legal Planet recently posted on "Cars, Smog, and EPA" An excerpt: For the first 20 years of federal regulation, Congress set the NOx [nitrogen oxides] standards for new cars itself. The initial standard, set in the 1970 Clean Air Act, was 3.1 EPA, 1973). grams per mile (gpm) for NOx.