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Study quantifies impact of oil and gas emissions on Denver’s ozone problem

Green Car Congress

The first peer-reviewed study to directly quantify how emissions from oil and natural gas (O&NG) activities influence summertime tropospheric ozone (O 3 ) pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem.

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US reaches $1.5B settlement with Daimler AG over emissions cheating in Mercedes-Benz diesels; civil penalty of $875M

Green Car Congress

The US Environmental Protection Agency (EPA), USDepartment of Justice (DOJ), and California Air Resources Board (CARB) announced a proposed settlement with Daimler AG and its American subsidiary Mercedes-Benz USA, LLC resolving alleged violations of the Clean Air Act and California law associated with emissions cheating.

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Latest GHG Inventory shows California remains below 2020 emissions target; much steeper rate of GHG reductions required

Green Car Congress

California’s latest greenhouse gas data shows that while the state continues to stay below its 2020 target for emissions, there is much more work to do to achieve carbon neutrality by 2045. California statewide GHG emissions dropped below the 2020 GHG Limit in 2016 and have remained below the 2020 GHG Limit since then.

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California SCAQMD petitioning EPA for national ultra-low NOx standard for trucks

Green Car Congress

The Governing Board of California’s South Coast Air Quality Management District (SCAQMD) earlier this year voted to petition the US Environmental Protection Agency (EPA) to adopt tougher emission standards for engines of heavy-duty trucks to help the region meet federal clean air goals. liter engine, produced by Cummins Westport Inc.,

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CARB, NOAA, NASA and San Jose State University scientists team up to study ozone transported across Pacific

Green Car Congress

As California continues to reduce local sources of ozone, ozone entering the state from the Pacific makes up a larger fraction of measured ozone levels. An ozonesonde is a balloon which measures ozone from the surface to more than 10 kilometers above the ground.

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FCA recalls 850,000+ gasoline vehicles due to problem with catalytic converters

Green Car Congress

NO x emissions in California are the most important contributor to ambient ozone and a key contributor to fine particulate matter pollution (PM 2.5 NO x emissions in California are the most important contributor to ambient ozone and a key contributor to fine particulate matter pollution (PM 2.5 2012: Q2 2019.

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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The vehicle test matrix had provisions for five vehicles on each emissions standards category (i.e.,