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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. This proposed rulemaking builds on and improves the existing emission control program for on-highway heavy-duty engines and vehicles.

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

Green Car Congress

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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New Mexico adopts Clean Cars Rule

Green Car Congress

The New Mexico Environmental Improvement Board (EIB) and the Albuquerque-Bernalillo County Air Quality Control Board (AQCB) have each adopted the Clean Car Rule after a joint public hearing. Their independent approval of the Clean Car Rule allows California’s Advanced Clean Cars to be implemented statewide in New Mexico beginning 1 July 2022.

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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

Green Car Congress

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. The Clean Air Act established two types of national air quality standards.

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Study Links Springtime Ozone Increases Above Western North America to Emissions in Asia

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Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.

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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.

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San Joaquin Valley receives $12.9M from CARB for clean trucks

Green Car Congress

Reducing emissions from mobile sources is key to the San Joaquin Valley meeting federal ambient air quality standards. Through advocacy efforts, the 2021-22 California state budget included new funding designated for the replacement of heavy-duty trucks with zero or near-zero emission trucks in severe or extreme nonattainment areas, with $12.9

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