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

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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 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 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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EPA launches Cleaner Trucks Initiative to update NOx standards for heavy-duty trucks

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The US Environmental Protection Agency (EPA) has launched the Cleaner Trucks Initiative (CTI) to further decrease NO x emissions from on-highway heavy-duty trucks and engines. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.

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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. National Ambient Air Quality Standards (NAAQS). Earlier post.)

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EPA Proposes New Tougher Ground-Level Ozone Standards

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Counties projected to violate proposed Primary 8-hour Ground-Level Ozone Standards in 2020. Source: EPA. The United States Environmental Protection Agency has proposed the strictest standards to date for ground-level ozone. By July 2011: EPA makes final area designations. Click to enlarge.

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