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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. The Clean Air Act established two types of national air quality standards.
Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said. Click to enlarge. °C (within a likely range of 0.2-0.7
These new funds will be utilized within the District’s existing Truck Replacement Program that provides funding for new, clean truck technologies. The District is currently working on reaching attainment for the federal 8-hour ozone and PM 2.5 standards.
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.
A University of Utah engineer has developed an inexpensive new method to remove oil sheen by repeatedly pressurizing and depressurizing ozone gas, creating microscopic bubbles that attack the oil so it can be removed by sand filters. The ozone in the bubble attacks certain pollutants because it is a strong oxidant.
Ozone, the main component of smog, is a plant-damaging pollutant formed by emissions from vehicles, cooking stoves and other sources. New research shows that ozone pollution damaged millions of tons of wheat, rice, soybean and cotton crops in India in 2005. Surface ozone pollution in India damaged 6 million metric tons (6.7
The US Environmental Protection Agency (EPA) is proposing new, stronger standards to promote clean air and reduce pollution from heavy-duty vehicles and engines starting in model year (MY) 2027. In 2045, the proposed Option 1 would result in total annual monetized ozone- and PM 2.5
The Oregon Environmental Quality Commission approved the Clean Trucks Rule, which adopts California’s Advanced Clean Trucks (ACT) Rule and Heavy-Duty Engine and Vehicle Omnibus rules (HD Omnibus) for Oregon.
Among the many climate-related vulnerabilities that can impact its mission, the US Environmental Protection Agency (EPA) cites a likely increase in tropospheric ozone pollution as potentially making it more difficult to attain National Ambient Air Quality Standards ( NAAQS ) in many areas with existing ozone problems.
The Pennsylvania Department of Environmental Protection (PA DEP) awarded $516,637 in clean diesel grants to four organizations. The clean diesel program’s goal is to improve air quality by decreasing emissions from diesel-powered transit bus and school bus fleets. Jennings Transportation Corp.:
Average annual percentage of black carbon pollution related to Chinese exports. Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. Black carbon is a particular problem: Rain doesn’t easily wash it out of the atmosphere, so it persists across long distances.
will pay a civil penalty of $2 million to resolve claims that the company imported and sold nearly 80,000 nonroad engines and equipment from China that did not meet standards under the Clean Air Act. Ground level ozone can trigger a variety of health problems, including chest pain, coughing, throat irritation and congestion.
will pay a civil penalty of $2 million to resolve claims that the company imported and sold nearly 80,000 nonroad engines and equipment from China that did not meet standards under the Clean Air Act. Ground level ozone can trigger a variety of health problems, including chest pain, coughing, throat irritation and congestion.
million to transit projects that improve emissions while supporting emerging clean fuel and advanced propulsion technologies. million from FTA’s Clean Fuels Grant Program and $49.9 million from FTA’s Clean Fuels Grant Program and $49.9 The US Department of Transportation will award up to total of $101.4
The human health benefits associated with improvements in air quality related to the reduction in greenhouse gas emissions improvements can offset 26–1,050% of the cost of US carbon policies, depending upon the type of policy, according to a new study by a team from MIT. Carbon-reduction policies significantly improve air quality.
The US Environmental Protection Agency (EPA) has submitted its final Report to Congress on Black Carbon , in response to an October 2009 request from Congress to advance efforts to understand the role of black carbon (BC) in climate change. —Report to Congress on Black Carbon. Source: EPA. Click to enlarge. Earlier post.).
Cars’ average carbon dioxide emissions have dropped by 25% since the early 2000s, according to the US Environmental Protection Agency (EPA), but this gas only accounts for part of the total. —Cliff et al. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g., Resources Samuel J. Lewis, Marvin D.
Of our "alternative fuel" options, only electricity can truly be made renewably (wind, solar, geothermal, small hydro), with no carbon or other noxious emissions. We need to prioritize clean electricity generation and plug-in battery cars to utilize that energy efficiently. And only electric drive cars can operate truly zero-emission.
Among the findings: Summer surface ozone (O 3 ) decreases in most locations due to widespread reductions of traffic NO x emissions. Across scenarios, we found the more cars that transitioned to electric power, the better for summertime ozone levels. Locations with clean energy sources, however, saw reductions.
The program gives priority consideration to the deployment of buses with the lowest energy consumption and least harmful emissions, including direct carbon emissions. An Eligible Area for the awards is either: Designated as a non-attainment area for ozone or carbon monoxide under section 107(d) of the Clean Air Act (42 U.S.C.
In particular, the study led by Drew Shindell found that methane emissions have a larger warming impact due to those interactions than accounted for in current carbon-trading schemes or in the Kyoto Protocol. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Shindell et al.
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 HFCs are powerful greenhouse gases originally developed as substitutes for ozone-depleting chemicals. Black Carbon. From Molina et al. Earlier post.) Mario Molina. (Dr.
Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. Furthermore, commercially available technologies, such as fuel efficient passenger vehicle tires, can be utilized by both new and in-use vehicles in the near-term to achieve GHG emission reductions.
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
Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. The burning of coal releases more carbon dioxide than other fossil fuels, as well as comparatively high levels of other pollutants, including sulfur dioxide, nitrogen oxides, and particles such as ash.
On the first day of a two-day board meeting—the second day of which (Friday 24 March) will consider the Advanced Clean Cars Midterm Review—the California Air Resources Board (ARB) took a number of climate and air quality actions. emissions by more than 20%. emissions by more than 20%.
The US Environmental Protection Agency (EPA) is issuing a proposed rule under the Clean Air Act (CAA) that would waive requirements beginning in 2013 for systems used at gas station pumps to capture potentially harmful gasoline vapors while refueling cars. The CAA requires states to implement Stage II gasoline vapor recovery.
Among the direct transportation-related provisions in the extensive package are a low-carbon fuel standard for all transportation fuels; financial support for large scale demonstrations of electric vehicles; and financial support for automakers retooling plants to make electric vehicles. Carbon Capture and Sequestration.
These connections arise because in many cases the agents of concern are the same, and in many cases the sources of the agents are the same or intimately connected.For example, surface ozone is both an air pollutant and a greenhouse gas. The complex roles that ozone and aerosols play in the atmosphere provide examples of such trade-offs.
The issuance of an endangerment finding enables the regulation of greenhouse gases under the Clean Air Act. Combined with the endangerment finding, this enables the regulation of greenhouse gas emissions from motor vehicles under the Clean Air Act. In both magnitude and probability, climate change is an enormous problem.
Pechman for the Western District of Washington has ruled that the Washington Department of Ecology, Northwest Clean Air Agency, and Puget Sound Clean Air Agency must regulate greenhouse gas emissions (GHGs) from the five oil refineries operating in Washington State. Washington’s SIP was adopted pursuant to the US Clean Air Act (CAA).
The cap-and-trade joins a suite of other major climate program measures including standards for ultra-clean cars (Advanced Clean Cars, earlier post ), low-carbon fuels (Low Carbon Fuel Standard, earlier post ) and renewable electricity. the destruction of existing stores of ozone-depleting substances in the U.S.
Emissions of carbon monoxide and hydrocarbons were also significantly below required 2010 levels: 97% and more than 99.9%, respectively. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES).
The data showed a 50% jump in efficiency each time the panels were cleaned after being left alone for several weeks. The researchers also sampled the grime to analyze its composition, revealing that 92% was dust while the remaining fraction was composed of carbon and ion pollutants from human activity. —Michael Bergin.
EPA sets NAAQS for six key pollutants known as “criteria pollutants” that are commonly found across the United States: ozone, particle pollution (particulate matter), lead, carbon monoxide, nitrogen dioxide and sulfur dioxide. The new NAAQS review process. Click to enlarge.
The researchers analyzed extensive satellite and ground-based measurements of nitrogen oxides and carbon monoxide. 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.
HFC-23 is a very potent greenhouse gas, with one tonne of its emissions being equivalent to the release of more than 12,000 tonnes of carbon dioxide. However, levels have been soaring because it is vented to the atmosphere during the production of another chemical widely used in cooling systems in developing countries.
NO 2 is just one component of air pollution, which is made up of many pollutants (including particulate matter, ozone, carbon monoxide), which are known to have numerous adverse effects on health. NO 2 is a pollutant formed mainly from fossil fuel combustion, and traffic emissions can contribute up to 80% of ambient NO 2 in cities.
Development of sustainable communities strategies can also provide an opportunity for associated criteria pollutant emission reductions that will be needed to attain air quality standards for ozone and particulate matter as well as reduce near-roadway exposures.
The US Environmental Protection Agency (EPA) is proposing to retain, without changes, the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM) including both fine particles (PM 2.5 ) and coarse particles (PM 10 ).
Specifically, the proposed rule updates the current prohibition under section 608 of the Clean Air Act against knowingly venting, releasing or disposing of ozone-depleting (ODS) and substitute refrigerants and extends the requirements, as appropriate, to non-ozone-depleting substitute refrigerants, such as hydrofluorocarbons (HFCs).
The 2013-2014 plan update allocates $100 million to projects in the following areas: $23 million for biofuels production and supply, with an emphasis on fuels made from waste-based and other low-carbon, sustainable materials. $20 5 million for manufacturing projects, supporting economic development and clean transportation technology. $4
This is in contrast to the conventional mobile AC system, where the cabin air is directly cooled by the refrigerant HFC-134a, which is ozone safe but has a high GWP. The new SL-MAC system, which is testing the low-GWP refrigerants, is expected to increase vehicle energy efficiency. — Dr. Stephen O.
The on-road transportation (ORT) and power generation (PG) sectors are major contributors to CO 2 emissions and a host of short-lived radiatively-active air pollutants, including tropospheric ozone and fine aerosol particles, that exert complex influences on global climate. Unger et al. Click to enlarge.
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