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CU Boulder study: routine household activities generate air quality on par with major polluted city

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Cooking, cleaning and other routine household activities generate significant levels of volatile and particulate chemicals inside the average home, leading to indoor air quality levels on par with a polluted major city, according to a study by researchers at the University of Colorado Boulder. Earlier post.).

Pollution 207
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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.

Ozone 150
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EPA, NHTSA issue One National Program Rule; EPA withdraws CA waiver for GHG and fuel economy

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For its part, EPA is withdrawing the Clean Air Act preemption waiver it granted to the State of California in January 2013 as it relates to California’s GHG and ZEV programs. California’s ability to enforce its Low Emission Vehicle program and other clean air standards to address harmful smog-forming vehicle emissions—i.e.,

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Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

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They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency. The researchers analyzed extensive satellite and ground-based measurements of nitrogen oxides and carbon monoxide.

Emissions 150
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Eaton introduces set of products to reduce vapor emissions during refueling; LEV III regulations

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If fuel vapor is released into the atmosphere, it contributes to a category of pollutants known as evaporative emissions. This category of emissions is the largest source of volatile organic compounds (VOCs) produced by automobiles, which are a main source of haze, ozone, and particulate matter.

Eaton 221
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California workshop on hydrogen and fuel cells in ports

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In California, the environmental footprint of ports is significant, both because of the volume of activity itself and because they tend to be located in areas that already experience heavy automobile and truck traffic, create smog, particulate matter, and ozone pollution.

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EPA waives requirements for gasoline pump vapor recovery

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However, as required by the Clean Air Act, automobile manufacturers began installing onboard refueling vapor recovery (ORVR) technologies in 1998, making gas stations’ systems increasingly redundant. Since 2006, all new automobiles and light trucks (pickups, vans and SUVs) are equipped with ORVR systems.

Gasoline 210