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EPA, Justice Dept., DEP Announce $5.275 Million In Penalties, Plus $1.4 Million In Abandoned Well Plugging Funding Against Shale Gas Drilling Companies-- XTO Energy, Inc., Hilcorp Energy Company For Federal, State Clean Air Act Violations

PA Environment Daily

XTO) [ExxonMobil] and Hilcorp Energy Company (Hilcorp) , agreed to resolve alleged Clean Air Act and Pennsylvania Air Pollution Control Act violations involving their oil and gas production operations in Pennsylvania. In separate agreements, XTO Energy Inc. Its operations stretch from the Great Plains to Appalachia.

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Nearly Half of US Breathes Unhealthy Levels of Pollution—Cars and Trucks Largely to Blame

Union of Concerned Scientists

Over 156 million people in the US are exposed to unhealthy levels of air pollutants, according to the recently published 2025 State-of-the Air report from the American Lung Association (ALA). For 25 years the report has helped people across the country understand the quality of the air in their communities.

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Volatile Chemical Products: Important Contributors to Harmful Particulate Matter

HumanNature

5] Additionally, the reaction of these volatile chemicals contributes to ground-level ozone production, which, unlike ozone in the stratosphere, is hazardous to human health. Clearing the Air: A Review of the Effects of Particulate Matter Air Pollution on Human Health. 19 7511 (2022). [2] 7 (2021). [5]

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Indirect Source Rules: An Emerging Route Toward Clean Freight

Union of Concerned Scientists

The increase in loading docks is of particular importance when looking at the air and climate pollution impacts from warehouses. Additionally, heavy-duty trucks are responsible for over half of fine particulate pollution emitted from on-road vehicles as well as a growing share of climate-warming emissions.

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Oil & Gas Methane Pollution Reduction Testimony: Rachel Meyer, Mother, Beaver County Resident - My Home Is Near A Natural Gas Compressor Station, 8 Shale Gas Well Pads, And The Shell Petrochemical Plant Is In My County

PA Environment Daily

VOCs, such as benzene, are harmful to health and can contribute to ground level ozone or smog that damages lungs and can trigger asthma attacks. I have had days where my own asthma has been aggravated for no other attributable reason than pollution escaping from these facilities.

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Air pollution can make insects mate with the wrong species

New Scientist

Ground-level ozone, a product of pollution from cars, degrades insect pheromones, and this can result in mismatched mating and sterile offspring

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Summer Air Pollution Trends: Factors Affecting Air Quality

Breezometer

Levels of Ground-level Ozone Pollution Can Increase in Summer. As ground-level ozone requires the presence of sunlight to form, high heat and sunny weather can function to increase concentrations of this particular pollutant. This study also found PM10 levels rose by 248% and PM2.5