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

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Summertime ozone pollution levels in the northern Front Range periodically spike above 70 parts per billion (ppb), which is considered unhealthy—on average, 17 ppb of that ozone is produced locally. Colorado has been out of compliance with federal ozone standard since 2007.

Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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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. In January 2010, EPA proposed strengthening the NAAQS for ground-level ozone, the main component of smog, and said it planned to issue final standards by 31 August 2010. Overview of January 2010 proposed revisions to ozone NAAQS.

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EPA tightens ground-level ozone standard to 70 ppb

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issued its final rule revising the National Ambient Air Quality Standards (NAAQS) for ground-level ozone to 70 parts per billion (ppb) from 75 ppb to protect public health. Ground-level ozone forms when nitrogen oxides (NO x ) and volatile organic compounds (VOCs) react in the air. EPA examined nearly 2,300 studies in this review of the ozone standards including more than 1,000 new studies published since the last review of the standards in 2008.

California ARB moves forward with climate and air quality actions

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Approximately 70% of the reductions needed to meet the ozone standard in the South Coast in 2031 would come from existing or proposed regulatory actions.

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US EPA to Reconsider National Ozone Standards

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The US Environmental Protection Agency (EPA) will reconsider the 2008 primary and secondary ozone standards. In 2008, EPA established a new primary 8-hour standard for ozone of 0.075 parts per million (ppm), and a new secondary standard set at a form and level identical to the new primary standard. The agency will propose any revisions to the ozone standards by December 2009 and will issue a final decision by August 2010.

EPA Proposes New Tougher Ground-Level Ozone Standards

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Counties projected to violate proposed Primary 8-hour Ground-Level Ozone Standards in 2020. The United States Environmental Protection Agency has proposed the strictest standards to date for ground-level ozone. Ground-level ozone forms when emissions from industrial facilities, power plants, landfills and motor vehicles react in the sun. In September 2009 Administrator Jackson announced that EPA would reconsider the existing ozone standards, set at 0.075 ppm in March 2008.

NOAA Study Identifies Nitrous Oxide as Top Ozone-Depleting Emission in 21st Century

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Comparison of annual N 2 O ODP-weighted emissions from the 1990s with emissions of other ODS in 1987 and in 2008. Currently, anthropogenic N 2 O emissions represent the largest contribution to ozone depletion.

Study Finds Ozone Concentrations at Current Clean Air Standards Levels Can Impair Even Healthy Lungs

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Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. In March 2008, the US Environmental Protection Agency (EPA) established a new primary 8-hour standard for ozone of 0.075 parts per million (ppm), and a new secondary standard set at a form and level identical to the new primary standard. EPA Ground-Level Ozone website.

WMO: Atmospheric Concentrations of Main Greenhouse Gases in 2008 Set New Highs

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Relative contribution of major greenhouse gases to the overall change in radiative forcing between 1979 and 1984 (a) and from 2003 to 2008 (b). from 2007 to 2008. The globally averaged mixing ratio of carbon dioxide (CO 2 ) in 2008 was 385.2

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. The US Environmental Protection Agency (EPA) is proposing to approve the 8-hour ozone air quality plans—which include their attainment demonstrations, enforceable commitments and reductions from new technologies—for California’s San Joaquin Valley (SJV) and South Coast (SC) areas, two of the worst air quality areas left in the country. In 2008, the 8-hour standard was lowered to 0.075 ppm.

Reducing Black Carbon Emissions and Ground-Level Ozone Would Provide Immediate Benefit Against Climate Change

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Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climate change problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Ground level or tropospheric ozone (different than the stratospheric ozone that blocks the sun’s UV rays) is formed by ozone precursor gases such as carbon monoxide, nitrogen oxides, methane, and other hydrocarbons.

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

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Without a nationwide ultra-low NO x emission standard, SCAQMD argues, California will not be able to meet the 2023 deadline for achieving the federally mandated 8-hour ozone standard, which was adopted in 1997 and set at 80 parts per billion. Nor will the region be able to meet the 2031 deadline for the 8-hour ozone standard that was adopted in 2008 and lowered to 75 parts per billion.

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”. Nationally, air pollution was lower in 2008 than in 1990 for: 8-hour ozone, by 14%.

California ARB soliciting research suggestions for FY 2012-2013 plan; sustainable communities, behavior, pollutant exposure, air pollution science, GHG targets

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Sustainable Communities : The Sustainable Communities and Climate Protection Act of 2008 (SB 375) directs California’s metropolitan planning organizations to develop sustainable communities strategies that meet regional greenhouse gas reduction targets through integrated land use, housing and transportation planning.

US NOx Cap and Trade Program Lowers Smog Levels in Eastern United States

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The existing US NO x cap-and-trade program lowered 2008 summertime NO x emissions from power plants and large industrial sources 62% compared to year 2000 levels and 75% lower than in 1990, according to a report released by the US Environmental Protection Agency (EPA).

Reduction in diesel carbonyl emissions using F-T fuel from coal

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Jakober, 2008). lower ozone formation potential of the carbonyl compounds present than DF under the identical operating conditions. Kleeman (2008) “Carbonyl Emissions from Gasoline and Diesel Motor Vehicles,”.

HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

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This phase was conducted at the Southwest Research Institute (SwRI) in 2007 and 2008 and was the basis for selecting one HHDD engine/control system for health testing in Phase 3. This phase started in 2008 with the installation of a specially designed emissions-generation and animal-exposure facility at the Lovelace Respiratory Research Institute (LRRI) and was conducted in two parts.

Cutting Non-CO2 Pollutants Can Delay Abrupt Climate Change; The Fast Action Climate Agenda

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2009), reproduced from Ramanathan and Feng (2008) Click to enlarge. Cutting HFCs, black carbon, tropospheric ozone, and methane can buy us about 40 years before we approach the dangerous threshold of 2°C warming. —co-author Tropospheric ozone.

Study finds changes in the Arctic sea ice cover may be driving changes in atmospheric chemistry

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Significant reductions of older perennial Arctic sea ice that has resulted in an expansion of younger and saltier sea ice may be intensifying the chemical release of bromine into the atmosphere, resulting in the depletion of ground-level ozone but also the deposit of toxic mercury in the Arctic, according to a new NASA-led study which has been accepted for publication in the AGU’s Journal of Geophysical Research-Atmospheres.

PowerTrain to pay $2M penalty for selling nearly 80K engines that failed to meet Clean Air Act standards

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Between 2002 and 2008, PowerTrain imported 79,830 nonroad engines or pieces of equipment into the US that were not covered by a Clean Air Act-required certificate of conformity. EPA estimates that the PowerTrain engines that were sold to the public caused excess emissions of hydrocarbons and nitrogen oxides, which contribute to the formation of ground-level ozone (smog).

PowerTrain to pay $2M penalty for selling nearly 80K engines that failed to meet Clean Air Act standards

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Between 2002 and 2008, PowerTrain imported 79,830 nonroad engines or pieces of equipment into the US that were not covered by a Clean Air Act-required certificate of conformity. EPA estimates that the PowerTrain engines that were sold to the public caused excess emissions of hydrocarbons and nitrogen oxides, which contribute to the formation of ground-level ozone (smog).

Calif. ARB releases GHG scoping plan update; more ZEVs, “LEV IV”, MD and HD regulations; ZEV for trucks; more LCFS

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Many of the strategies employed to reduce GHG emissions will also work to meet the national ambient air quality standard for ozone in 2032. However, to achieve the needed transportation GHG reductions and the corresponding 2032 ozone standards, the market uptake of advanced technologies will need to be accelerated.

EPA finalizes Cross-State Air Pollution Rule (Transport Rule)

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The Cross-State Air Pollution Rule replaces and strengthens the requirements of the 2005 Clean Air Interstate Rule (CAIR), which the US Court of Appeals for the DC Circuit ordered EPA to revise in 2008. reductions; annual NO x reductions; and ozone-season NO x. Transport Rule states.

EPA Proposes Transport Rule to Cut Pollution from Power Plants in 31 States and DC; New Approach for Pollution Reduction

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This proposal reduces emissions contributing to fine particle (PM 2.5 ) and ozone nonattainment that often travel across state lines. million days when people miss school or work due to ozone- and particle pollution-related symptoms, according to EPA.

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Up close and personal with Volkswagen’s e-Golf carbon offset project: Garcia River Forest

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In February 2008, GRF became one of the first forests—and the largest—to receive verification as a source of greenhouse gas reductions under the protocols of the Climate Action Reserve , adopted by the California Air Resources Board in 2007. ozone depletion potential (ODP).

Linde subsidiary to blend HCR188C alternative low global warming potential refrigerants in EU

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HCR188C/R441A and HCR188C/R443A are both patented and trademarked zero-ozone-depleting/extremely low global-warming-potential (GWP) hydrocarbon blends. TEGA is ISO 9001:2008 certified, and is one of the main distributors for flammable and non-flammable refrigerants in Europe. TEGA GmbH, a subsidiary of The Linde Group, has signed an agreement with A. Trust & Holdings, Inc.

NOAA, partners find about 98% decline in VOCs concentrations in LA Basin over last 50 years despite 3x increase in use of gasoline and diesel

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VOCs, primarily emitted from the tailpipes of vehicles, are a key ingredient in the formation of ground-level ozone which, at high levels, can harm people’s lungs and damage crops and other plants. The 98% drop in VOCs in the last 50 years does not mean that ozone levels have dropped that steeply; the air chemistry that leads from VOCs to ozone is more complex than that.

NC State Researchers Developing Ozonolysis Pretreatment for Energy Grass Feedstocks

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Researchers at North Carolina State University are developing an ozone-based pre-treatment technique (ozonolysis) to release sugars from the energy grass miscanthus for production into renewable fuels or chemicals with minimal generation of chemical waste streams and degradation of the carbohydrate components. Ozone is highly reactive towards compounds incorporating conjugated double bonds and functional groups with high electron densities. Ozone. 2008).

California ARB Expands Assistance Program for Truckers to Reduce Diesel Emissions

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The changes made to the statewide Voucher Incentive Program, also known as the VIP, will make funding available to a larger variety of trucks that will help owners comply early with the statewide truck and bus regulation passed in 2008. In December 2008, ARB adopted statewide clean truck and bus regulations to bring California closer to meeting federally mandated air-quality standards and deadlines.

California Air Resources Board posts revised draft of strategy to reduce “Super Pollutants”

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CARB began publicly evaluating controls for SLCPs with the first AB 32 Scoping Plan in 2008. The California Air Resources Board (CARB) has posted a revised draft of California’s proposed Short-Lived Climate Pollutant (SLCP) Strategy.

Israel MoEP enforcing vehicle exclusion rules in Haifa Bay Low Emission Zone; $2.8M to retrofit 700 diesel trucks with DPFs

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The Haifa region began air quality monitoring some 30 years ago; the metropolitan area now has the densest air quality monitoring network in Israel with 27 continuous monitoring stations that measure criteria pollutants including sulfur oxides, nitrogen oxides, ozone, particulates and more.

EPA and DOT issue final Phase 2 GHG and fuel efficiency rulemaking for medium- and heavy-duty trucks

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In order to achieve the 2008 Ozone National Ambient Air Quality Standards set by US EPA, CARB estimates that the South Coast Air Basin alone (including Los Angeles) will need an 80% reduction in NO x emissions by 2031. The US Environmental Protection Agency (EPA) and the US Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) jointly released the finalized Phase 2 greenhouse gas and fuel efficiency standards for medium- and heavy-duty trucks.

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US and UK researchers report direct measurement of key atmospheric reactant; more rapid formation of secondary aerosols

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Because a large fraction of the tropospheric oxidation of unsaturated hydrocarbons is initiated by reaction with ozone, these biradical “Criegee intermediates” play a substantial role in the tropospheric budgets of secondary organic aerosols (SOAs), ozone, NO x , NO y , and HO x.

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.

NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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Because the latter was a $126 billion/year market in 2008, even small differences in GWPs can have large economic consequences. And hydroxyls drive long chains of reactions involving other common gases, including ozone.

Study Finds Controlling Soot May Be Fastest Method to Reduce Arctic Ice Loss and Global Warming; Second-Leading Cause of Global Warming After CO2

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2008] and methane [Schutz et al., 1990; Anisimov, 2007] and chemical production of ozone in already-polluted locations [Jacobson, 2008b]. These three gases are all greenhouse gases, and ozone is a surface air pollutant. Warmer temperatures due to soot and other components also increase emissions of ozone and particulate matter precursors, including biogenic organic gases [e.g.,

Stanford Professor Urges EPA to Include Black Carbon in Endangerment Finding

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F, with about 40% due to ozone. The second study found that local CO 2 emissions produce CO 2 domes over cities, which increase local ozone and PM, increasing local mortality. Jacobson (2008) On the causal link between carbon dioxide and air pollution mortality.

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New study finds asthma morbidity in children is enhanced in areas with high traffic-related air pollution near the home

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Research data included 11,390 emergency room visits and hospital admissions made by 7,954 children ages 0 to 18 between 2000 and 2008. and ozone in warm months, and with PM 2.5 , carbon monoxide, nitrogen dioxide and oxides of nitrogen in the cool season.

UNEP Report Calls for More Sophisticated Approach to Developing Biofuels; Limitations of Current LCA Studies

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Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. Rapeseed biodiesel as an example of the varied environmental impacts of a particular biofuel.

California ARB greenlights states GHG cap-and-trade program

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The regulation has been in development for the past two years since the passage of the Scoping Plan in 2008. At its meeting in Sacramento yesterday, the California Air Resources Board (ARB) endorsed the state’s cap-and-trade regulation.