2009 Air Pollution Ozone 
Legal Planet
MARCH 17, 2025
In late 2009, EPA made a formal finding often called the Endangerment Finding that greenhouse gases may endanger human health and welfare. In this post, Ill explain the 2009 finding, its significance, the specific arguments EPA is making, and why they are likely to fail. First, it has to qualify as an air pollutant.
Union of Concerned Scientists
AUGUST 7, 2025
By adding fine particulates to the air, wildfires can drive unhealthy air quality conditions, as measured by the AQI, shown above. When combined with summer heat and ground level ozone, conditions can worsen further.
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The Energy Law
SEPTEMBER 15, 2011
Specifically, the Cross-State Air Pollution Rule (CSAPR) requires 27 states, including Louisiana and Texas, to make dramatic cuts in power plant emissions. Emissions reductions will take effect quickly, starting January 1, 2012 for SO2 and annual NOx reductions, and May 1, 2012 for ozone season (May-September) NOx reductions.
PA Environment Daily
JUNE 7, 2022
So when this industry and its drilling took off in the late otss, you know, 2009, 2010, we were sort of in the right place at the right time. And over the last 15 years, I've spent regular time in Danville. We founded the Environmental Health Institute in 2007. What Do Communities Experience Now, what's a community's experience?
PA Environment Daily
JULY 25, 2022
So when this industry and its drilling took off in the late otss, you know, 2009, 2010, we were sort of in the right place at the right time. Wastewater can also have various heavy metals and radioactive materials present that can harm health. Health exposures can also occur from spills or leaks.
Law Columbia
MARCH 13, 2023
In its legislative findings, which remain in air quality statutes today , Congress justified air pollution regulation because “the growth of the amount and complexity of air pollution brought about by urbanization, industrial development, and the increasing use of motor vehicles, has resulted in mounting dangers to the public health and welfare.”
Union of Concerned Scientists
OCTOBER 15, 2024
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. PFAS is shorthand for a class of “forever chemicals” that persist in the environment indefinitely.
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