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EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

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US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.

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CARB approves $423M plan to mitigate harm from Volkswagen defeat devices; significant investments in heavy-duty vehicles and equipment sectors

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There is also money to reduce emissions at freight facilities, marine projects and light-duty vehicle charging. The goal of this project category is to maximize NO x reductions by funding the most cost-effective zero-emission freight or marine projects. Beginning in model year 2008 VW sold about 600,000 2.0- Background.

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US EPA Reports National Trends Show Improvements in Air Quality

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Since 1990, nationwide air quality has improved significantly for the six common air pollutants: ground-level ozone; particle pollution; lead; nitrogen dioxide; carbon monoxide; and sulfur dioxide, according to the US Environmental Protection Agency (EPA) report “Our Nation’s Air - Status and Trends through 2008”. annual PM 2.5

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Research shows clean fuel-use for ships off California coast extremely effective in reducing sulfur dioxide pollution

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More findings from the CalNex research on a variety of subjects, from the formation of ozone to the interactions of particles and clouds, are being presented at a four-day workshop May 16 through 19 in Sacramento, California.

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Study finds marine workboat engines staying in service two times longer than estimated by EPA; emissions reduction implications

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The US Army Corps of Engineers estimates that, as of 2014, there were approximately 9,000 Category 1 and 2 marine vessels operating on US waters. Since real-world workboat engines are operating with longer lifespans, the actual nitrogen oxide emission reductions are 52 percent weaker than predicted in EPA’s 2008 Rule calculations.

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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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Significant climate anomalies 2008/2009. In 2008, the minimum ice extent was 9% greater than in 2007, but still the second lowest on record. The hole in the ozone layer has had a cooling effect on Antarctica, and is partly responsible for masking expected warming on the continent. Source: Climate Change Compendium.