Union of Concerned Scientists
JULY 26, 2022
Bakersfield, Fresno, and Visalia are consistently ranked as cities with the worst particulate and ozone pollution , according to the American Lung Association. and ozone concentrations highlighting air quality issues in the Central Valley. Annual average PM2.5 Graphics from CalEnviroScreen 4.0
Legal Planet
AUGUST 22, 2023
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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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. Still whistling in the wind , I fear.
Legal Planet
MARCH 15, 2023
Several cities in California, including Los Angeles and in the Bay Area, have outlawed new gas hookups, but these are the first regulations that would effectively ban the sale of gas appliances. Additionally, NOx react with other chemicals in the air to create other harmful pollutants, like fine particulate matter and ozone.
Clean Energy Law
JUNE 1, 2021
At a contentious board hearing on May 7, 2021, the South Coast Air Quality Management District (SCAQMD) approved a first-in-the-nation rule to regulate trucking emissions from warehouses by a 9-4 vote. These state and federal standards require areas to reach certain ambient concentrations of ozone to be considered in “attainment.”
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. When facilities emit less pollution, their regulations require less specific record-keeping and monitoring.
Union of Concerned Scientists
SEPTEMBER 26, 2024
One good example of the nexus between global warming and local pollution is ground-level ozone. A study of the causes of the explosion suggested the need for stronger safety regulations. To make matters worse, NOx contributes to the formation of ground-level ozone and secondary PM2.5, Bermix Studio/Unsplash PM2.5:
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