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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. EPA is co-proposing two regulatory options for new NO x standards: proposed Option 1 and proposed Option 2.
Long-term exposure to ambient ozone appears to accelerate arterial conditions that progress into cardiovascular disease and stroke, according to a new University at Buffalo study. The study found that chronic exposure to ozone was associated with a progression of thickening of the main artery that supplies blood to the head and neck.
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. Earlier post.) National Ambient Air Quality Standards (NAAQS).
US EPA Region 9 8-hour ozone trends, 1979-2000. Source: EPA. 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
Researchers from Rice University and the US Environmental Protection Agency (EPA) report in a paper in the journal Atmospheric Chemistry that particularly in Northeastern cities, ozone levels dropped even beyond what was anticipated by cutting emissions of NO x from 2002 to 2006. This is good news. —Daniel Cohan, co-author.
The US Environmental Protection Agency (EPA) has announced two final rules that will further reduce the availability and use of hydrochlorofluorocarbons (HCFCs), which are primarily used as refrigerants and harm the ozone layer. The 2010 HCFC Regulations.
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.
million in 2021 Targeted Airshed Grant (TAG) funding from the US Environmental Protection Agency (EPA) to deploy five XCIENT Fuel Cell electric trucks in California. EPA’s TAG program aims to reduce air pollution in areas of the nation with the highest levels of ambient ozone and fine particulate matter (PM 2.5 ) pollution.
The US Environmental Protection Agency announced that it is proposing to find that the San Joaquin Valley, and California’s South Coast and the Southeast Desert have failed to meet the 1-hour ozone standard by their required deadlines. Children and the elderly are most impacted by ozone pollution. NO x and VOCs are ozone precursors.
EPA is proposing , at the request of the State of Maine, to require the sale of reformulated gasoline ( RFG ) in York, Cumberland, Sagadahoc, Androscoggin, Kennebec, Knox and Lincoln counties in southern Maine starting in June 2015. RFG is required in cities with high smog levels and is optional elsewhere.
Exposure to ozone, long associated with impaired lung function, is also connected to health changes that can cause cardiovascular disease such as heart attack, high blood pressure and stroke, according to a new study of Chinese adults. The findings associated ozone exposure with markers of platelet activation and increased blood pressure.
Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.
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. The previous primary and secondary standards were identical 8-hour standards, set at 0.08 Earlier post.).
The US Environmental Protection Agency (EPA) has launched the Cleaner Trucks Initiative (CTI) to further decrease NO x emissions from on-highway heavy-duty trucks and engines. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.
The US Environmental Protection Agency (EPA) has issued final approval for HFO-1234yf refrigerant ( earlier post ) in motor vehicle air conditioning systems. The chemical, which does not deplete the ozone layer, may now be used in air conditioning for new cars and light trucks. Using HFO-1234yf is one option available to automakers.
Source: EPA. The US Environmental Protection Agency (EPA) has finalized the new Cross-State Air Pollution Rule (CSAPR) (also called the Transport Rule). The court allowed CAIR to remain in place temporarily while EPA worked to finalize the replacement rule.). Source: EPA. Ozone Season NO x Power Plant Emissions.
According to the EPA, GM’s choice to use green power helps advance the voluntary market for renewable energy, as well as the development of those sources.
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. EPA said that the legal basis for withdrawing the California waiver is under CAA section 209(b)(1)(B), which covers compelling and extraordinary conditions.
The US Environmental Protection Agency (EPA) has pushed back its projected release of the Notice of Proposed Rulemaking (NPRM) for Tier 3 light-duty vehicle emission and fuel standards to July 2012. The standards in the new rule will lead to further reductions in ozone, particulate matter, nitrogen dioxide, and mobile source air toxics.
Having approval for such a high octane certification fuel would, the EPA proposed in the Tier 3 Notice of Proposed Rulemaking: help manufacturers that wish to raise compression ratios to improve vehicle efficiency, as a step toward complying with the 2017 and later light-duty greenhouse gas and CAFE standards (2017 LD GHG). Earlier post.)
In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 a global warming potential of 21. Tg CO 2 eq) in 2011.
The US Environmental Protection Agency (EPA) announced $5,959,842 million in research funding to nine institutions to improve air quality models used to simulate ozone, particulate matter (PM), regional haze, air toxics, and emerging pollutants.
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
The US Environmental Protection Agency (EPA) is issuing an emergency fuel waiver to allow E15 gasoline to be sold during the summer driving season. The Clean Air Act (CAA) requires the use of low-volatility gasoline during the summer months in order to limit the formation of ozone pollution. EPA provides a 1.0 Earlier post.).
Source: EPA. 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. Most VRS are vacuum assist, according to EPA.
The US Environmental Protection Agency (EPA) has determined that the systems used at gas station pumps to capture harmful gasoline vapors while refueling cars can be phased out. Modern vehicles are equipped to capture those emissions. Since 2006, all new automobiles and light trucks (pickups, vans and SUVs) are equipped with ORVR systems.
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.
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.
Currently, anthropogenic N 2 O emissions represent the largest contribution to ozone depletion. The study, published online 27 August in the journal Science , for the first time evaluated nitrous oxide emissions from human activities in terms of their potential impact on Earth’s ozone layer. Source: Ravishankara et al. The team, A.R.
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 ). EPA sets both an annual and a 24-hour standard for fine particles (PM 2.5 ). Average PM 2.5
The EPA has dismissed two panels of outside scientists that advised the agency on particulate matter and ground-level ozone, which have been linked to smog and respiratory problems.
The US Environmental Protection Agency (EPA), National Science Foundation (NSF), the National Oceanic and Atmospheric Administration (NOAA), Southern Company, and the Electric Power Research Institute (EPRI) are together contributing more than $20 million in research funding to support the SouthEast Atmosphere Study (SAS).
The objective of the emission impact analysis was to respond to EPA’s request for comments as to the merits of reducing NO x emissions from heavy-duty trucks by 50 to 90% as outlined in the 6 January 2020 Advance Notice of Proposed Rulemaking (ANPR) of the CTI. Source: MECA. ppb in the west (San Bernardino, CA) and 4.9
Lisa P Jackson, Administrator of the US Environmental Protection Agency, issued a public memo to EPA employees detaling “ seven key themes to focus the work of our agency ” in 2010 and beyond. Jackson wrote that EPA will also focus on improving EPA’s internal operations, from performance measures to agency processes.
Source: EPA. 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. Source: EPA. Key policy-relevant scientific uncertainties related to BC.
Commercial workboat engines are staying in service more than two times longer than predicted by the US Environmental Protection Agency (EPA), according to new research from the Diesel Technology Forum (DTF) and Environmental Defense Fund (EDF). —Ezra Finkin, DTF Policy and Outreach Director. Elena Craft, EDF Senior Director.
The US EPA issued an Advance Notice of Proposed Rulemaking (ANPR) for the Cleaner Trucks Initiative (CTI). EPA is seeking input from the public and interested stakeholders. The ANPR provides an opportunity for comment on the extent to which EPA should adopt provisions similar to those expected in the CARB Omnibus proposal.
After a thorough scientific review ordered in 2007 by the US Supreme Court, the US Environmental Protection Agency (EPA) issued a proposal with two distinct findings regarding greenhouse gases. Before taking any steps to reduce greenhouse gases under the Clean Air Act, EPA would conduct an appropriate process and consider stakeholder input.
The US Environmental Protection Agency (EPA) has awarded $5 million to the Southern Alliance for Clean Energy (SACE) to help Southern truckers and small businesses to buy cleaner big rigs. About 8 million are exposed to air quality that violates the federal standards for particulate matter.
The California Air Resources Board (CARB) voted to approve an updated plan for the South Coast Air Basin aimed at further cutting smog-forming emissions to attain the federal 8-hour ozone standard. But it is imperative that US EPA move quickly to do its job and reduce pollution from the sources it has the responsibility to regulate.
The US Environmental Protection Agency (EPA) announced two new proposed federal emissions standards spanning light-, medium- and heavy-duty vehicles for model year 2027 and beyond. The light-duty vehicle category includes passenger cars and light trucks consistent with previous EPA criteria pollutant and GHG rules.
and ozone at or above the current standards have been linked to neuroinflammation and high risk of Alzheimer’s disease (AD). suggesting long-term exposure to PM 2.5 , as well as ozone above the current US EPA standards, are associated with increased risk of Alzheimer’s disease. Exposures to concentrations of PM 2.5
The US Environmental Protection Agency (EPA) proposed standards to reduce harmful air pollution from oil and gas drilling operations. The VOC reductions in the proposal are expected to help reduce ozone nonattainment problems in many areas where oil and gas production occurs. Details on the hearings will be announced soon.
EPA has proposed a new to reduce emissions of hydrofluorocarbons (HFCs), potent greenhouse gases used in refrigeration and air conditioning. EPA is also proposing numerous changes to the National Recycling and Emission Reduction Program. EPA will accept comments on the proposal for 60 days following publication in the Federal Register.
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