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EPA initiates new review of the Ozone National Ambient Air Quality Standards

Green Car Congress

The Environmental Protection Agency (EPA) announced a new review of the Ozone National Ambient Air Quality Standards (NAAQS). EPA Administrator Michael Regan reached this decision after considering advice provided by the independent Clean Air Scientific Advisory Committee (CASAC). —EPA Administrator Michael S.

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EPA proposes new heavy-duty truck emissions rules

Green Car Congress

The US Environmental Protection Agency (EPA) is proposing new, stronger standards to promote clean air and reduce pollution from heavy-duty vehicles and engines starting in model year (MY) 2027. EPA is co-proposing two regulatory options for new NO x standards: proposed Option 1 and proposed Option 2.

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EPA proposes tightening primary ozone standards to range of 65-70 ppb; final rule by October 2015

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Counties where measured ozone is above proposed range of standards, based on 2011-2013 monitoring data. Source: EPA. EPA will seek public comment on the proposal for 90 days following publication in the Federal Register, and the agency plans to hold three public hearings. Click to enlarge. Earlier post.).

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EPA proposes stringent new emissions standards for light-, medium-, heavy-duty vehicles for MY 2027 and beyond

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The US Environmental Protection Agency (EPA) announced two new proposed federal emissions standards spanning light-, medium- and heavy-duty vehicles for model year 2027 and beyond. The light-duty vehicle category includes passenger cars and light trucks consistent with previous EPA criteria pollutant and GHG rules.

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EPA tightens ground-level ozone standard to 70 ppb

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The US Environmental Protection Agency (EPA). issued its final rule revising the National Ambient Air Quality Standards (NAAQS) for ground-level ozone to 70 parts per billion (ppb) from 75 ppb to protect public health. Ground-level ozone forms when nitrogen oxides (NO x ) and volatile organic compounds (VOCs) react in the air.

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Hyundai Motor puts XCIENT Fuel Cell electric trucks into commercial fleet operation in California with $3.5M from EPA

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million in 2021 Targeted Airshed Grant (TAG) funding from the US Environmental Protection Agency (EPA) to deploy five XCIENT Fuel Cell electric trucks in California. EPA’s TAG program aims to reduce air pollution in areas of the nation with the highest levels of ambient ozone and fine particulate matter (PM 2.5 ) pollution.

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UB study finds link between ambient ozone exposure, artery wall thickness

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Long-term exposure to ambient ozone appears to accelerate arterial conditions that progress into cardiovascular disease and stroke, according to a new University at Buffalo study. The study found that chronic exposure to ozone was associated with a progression of thickening of the main artery that supplies blood to the head and neck.

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