Air pollution control (31 - 40 of 128 items)
Survey of State and Local Air Quality Officials Opinions on the Impacts of the Environmental Protection Agency's Revisions to the Clean Air Act's New Source Review Program, an E-supplement to GAO-04-274
GAO-04-337SP: Published: Feb 2, 2004. Publicly Released: Feb 2, 2004.
This document presents the results of GAO's survey of program managers within state and local air quality agencies that implement the Clean Air Act's New Source Review (NSR) Program. To determine these officials' views on the impacts of the Environmental Protection Agency's (EPA's) proposed and final revisions to the act's NSR program, we conducted an internet-based survey of NSR program managers...
Climate Change: Preliminary Observations on the Administration's February 2002 Climate Initiative
GAO-04-131T: Published: Oct 1, 2003. Publicly Released: Oct 1, 2003.
In 2002, the Administration announced its Global Climate Change Initiative. It included, among other things, a goal concerning U.S. carbon dioxide and other greenhouse gas emissions, which are widely believed to affect the earth's climate. The Administration's general goal was to reduce the growth rate of emissions, but not total emissions, between 2002 and 2012. Its specific goal was to reduce em...
Climate Change: Information on Three Air Pollutants' Climate Effects and Emissions Trends
GAO-03-25: Published: Apr 28, 2003. Publicly Released: May 28, 2003.
Solar radiation is absorbed by the earth and is subsequently reemitted. The buildup of carbon dioxide and certain other gases in the earth's atmosphere traps some of that radiation. This is known as the greenhouse effect and is believed to contribute to a warming of the earth's climate. Concerns are growing that, in addition to carbon dioxide and other conventional greenhouse gases, certain air po...
Environmental Protection: Federal Planning Requirements for Transportation and Air Quality Protection Could Potentially Be More Efficient and Better Linked
GAO-03-581: Published: Apr 28, 2003. Publicly Released: May 8, 2003.
To protect the public from harmful emissions, transportation planners in areas with poor air must show that their plans will not make it worse. Every time they update their transportation improvement program (TIP) and their 20-year plan--every 2 and 3 years respectively--federal laws and regulations require that they ensure the emissions from their plans will not exceed the mobile source emissions...
Aviation and the Environment: Strategic Framework Needed to Address Challenges Posed by Aircraft Emissions
GAO-03-252: Published: Feb 28, 2003. Publicly Released: Mar 7, 2003.
Although noise has long been a problem around airports, the anticipated growth in demand for air travel has also raised questions about the effect of airport operations on air quality. Aviation-related emissions of nitrogen oxides, which contribute to the formation of ozone, have been of particular concern to many airport operators. A federal study at 19 airports estimated that, by 2010, aircraft...
Air Pollution: Meeting Future Electricity Demand Will Increase Emission of Some Harmful Substances
GAO-03-49: Published: Oct 30, 2002. Publicly Released: Nov 12, 2002.
Electric power plants burn fuels that can produce harmful emissions, such as carbon dioxide, mercury, nitrogen oxides, and sulfur dioxide, which can pose human health and environmental risks. To assess the potential risks of meeting future electricity demand, congressional committees asked GAO to (1) report on the Energy Information Administration's (EIA's) national and regional projections of suc...
Air Pollution: Emissions from Older Electricity Generating Units
GAO-02-709: Published: Jun 12, 2002. Publicly Released: Jun 18, 2002.
Although fossil fuels--coal, natural gas, and oil--account for more than two thirds of the nation's electricity, generating units that burn these fuels are major sources of airborne emissions that pose health and environmental risks. To limit emissions and protect air quality, the Environmental Protection Agency regulates emissions of sulfur dioxide and nitrogen oxides from a variety of sources in...
Air Quality: TVA Plans to Reduce Air Emissions Further, but Could Do More to Reduce Power Demand
GAO-02-301: Published: Mar 8, 2002. Publicly Released: Mar 22, 2002.
The Tennessee Valley Authority (TVA) relied on its 11 coal-burning plants to supply 60 percent of its electric power in fiscal year 2001. These plants account for almost all of TVA's emissions of two key air pollutants--sulfur dioxide (SO2), which has been linked to reduced visibility, and nitrogen oxides (NOx), which contribute to the formation of harmful ozone. To meet an increase in demand of 1...
Environmental Protection: Wider Use of Advanced Technologies Can Improve Emissions Monitoring
GAO-01-313: Published: Jun 22, 2001. Publicly Released: Jul 23, 2001.
To protect human health and safeguard the environment,the Environmental Protection Agency (EPA) regulates pollution generated by sewage treatment plants, power generation plants, chemical manufacturers, and pulp and paper mills. Monitoring is a key component of these efforts. Many of the technologies that are now being used to monitor environmental conditions have been in existence for decades. In...
Air Pollution: Air Quality and Respiratory Problems in and Near the Great Smoky Mountains
GAO-01-790T: Published: May 25, 2001. Publicly Released: May 25, 2001.
Concerns have been growing about the air quality, visibility, and respiratory illnesses around the Great Smoky Mountains National Park, which straddles the border between North Carolina and Tennessee. This testimony analyzes recent trends in and contributing factors to (1) visibility impairments, (2) ground-level ozone, and (3) respiratory illnesses. This testimony also examines the Tennessee Vall...