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WHO issues new, lower Global Air Quality Guidelines for classical pollutants

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New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climate change. Since WHO’s last 2005 global update, there has been a marked increase of evidence that shows how air pollution affects different aspects of health. Source: WHO. nitrogen dioxide (NO?)

Pollution 435
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EPA to evaluate whether lead emissions from piston-engine aircraft endanger human health and welfare

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The US Environmental Protection Agency (EPA) will evaluate whether emissions from piston-engine aircraft operating on leaded fuel contribute to air pollution that endangers public health and welfare. The agency plans to issue a proposal for public review and comment in 2022 and take final action in 2023.

EPA 315
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EPA adds 1-bromopropane to list of hazardous air pollutants; first addition since 1990

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The US Environmental Protection Agency (EPA) has granted petitions to add 1-bromopropane (1-BP) to the list of hazardous air pollutants regulated under the Clean Air Act (CAA). This is the first time since 1990 that EPA has granted a petition to add a hazardous air pollutant to the CAA.

Pollution 321
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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 is incorporating the ongoing reconsideration into the review announced today and will consider the advice and recommendations of the CASAC in that review.

Ozone 150
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ICL briefing paper estimates that 52% of all small particle pollution from road transport comes from tires and brakes

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A new briefing paper from Imperial College London estimates that in 2021, 52% of all small particle pollution from road transport came from tires and brakes. Despite this, research on the environmental and health impacts of tire wear has been neglected in comparison to the research and innovations dedicated to tackling fuel emissions.

Pollution 243
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EPA grants waivers for California’s on-highway heavy-duty vehicle and engine emission standards

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The US Environmental Protection Agency (EPA) is granting two waivers of preemption regarding four California Air Resource Board (CARB) regulations related to California’s heavy-duty vehicle and engine emission standards. In this instance, CARB requested two waivers for regulations relating to heavy duty vehicles and engines.

EPA 210
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HEI study in Europe finds evidence of health effects at lower levels of air pollution

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A major new Health Effects Institute (HEI) report presents a study examining associations between exposures to relatively low levels of air pollution and several health outcomes among participants in 22 European cohorts. Initial results were published in 2019 and Phase 2 results are under review. particle composition.

Pollution 313