Atmosphere Environmental Protection Ground-Level Ozone 
PA Environment Daily
JANUARY 21, 2022
On January 21, the Department of Environmental Protection announced funding for more than $2.7 Transportation generates 47 percent of nitrogen oxide emissions in Pennsylvania, contributing to the formation of ground-level ozone. It also supports the installation of fueling stations for these vehicles.
Union of Concerned Scientists
SEPTEMBER 26, 2024
Based on data from the Environmental Protection Agency (EPA) on toxic air and water emissions for a large number of industrial facilities across the US, refineries are the 10 th most toxic industry , in a toxicity ranking list with over 200 grades. which is formed in the atmosphere from precursor gases such as NOx.
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Union of Concerned Scientists
MAY 21, 2025
It presents air pollution data at the county-level for two pollutants, deadly fine particulate matter (PM 2.5 ) and ground-level ozone. is emitted directly from the tailpipes of gasoline and diesel vehicles, while ozone and even more PM 2.5 Internal combustion vehicles are largely to blame, since PM 2.5
Union of Concerned Scientists
OCTOBER 15, 2024
The Heritage Foundation’s blueprint—Project 2025—to dramatically alter the US Environmental Protection Agency should concern you. This, along with many other chemicals, like diesel particulates and ground-level ozone that form soot and smog, and metals like lead in paint and drinking water, are regulated by the EPA to keep us safe.
Union of Concerned Scientists
MARCH 29, 2023
By railing against what he calls a “radical climate change movement” and suing the federal government to protect corporate polluters. In 2015, when he took office as AG after stints in the Texas Legislature, he sued the Environmental Protection Agency for strengthening a standard for ground-level ozone, better known as smog.
Columbia Climate Law
DECEMBER 2, 2019
On Friday, November 22, the Sabin Center submitted comments opposing an Environmental Protection Agency (“EPA”) proposal to rescind regulations limiting methane emissions from new oil and natural gas facilities (the “Methane New Source Performance Standards” or “Methane NSPS”). By Romany Webb.
Union of Concerned Scientists
OCTOBER 12, 2023
Despite clear recommendations from its own science advisors, the US Environmental Protection Agency (EPA) announced over the summer that it will delay its scheduled process to consider strengthening public health standards for ground-level ozone pollution. The stakes over ground-level ozone standard are high.
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