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Author : Anonim
Publisher : Unknown
Page : 364 pages
File Size : 53,8 Mb
Release : 1997
Category : Air quality
ISBN : PSU:000031670111
Author : United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Clean Air and Nuclear Safety
Publisher : Unknown
Page : 120 pages
File Size : 44,8 Mb
Release : 2012
Category : Law
ISBN : UCSD:31822038362745
Author : United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment
Publisher : Unknown
Page : 676 pages
File Size : 44,7 Mb
Release : 1997
Category : Science
ISBN : PSU:000031632850
Author : United States. Congress. House. Committee on Commerce. Subcommittee on Health and the Environment
Publisher : Unknown
Page : 128 pages
File Size : 52,8 Mb
Release : 1997
Category : Air
ISBN : 0160551897
Author : Anonim
Publisher : DIANE Publishing
Page : 525 pages
File Size : 43,9 Mb
Release : 1996
Category : Air
ISBN : 9781428904699
Author : Ken Calvert,Tim Roemer
Publisher : Unknown
Page : 40 pages
File Size : 45,8 Mb
Release : 1997
Category : Medical
ISBN : PSU:000031676601
Author : Robert Esworthy
Publisher : Createspace Independent Pub
Page : 50 pages
File Size : 55,9 Mb
Release : 2013-03-13
Category : Political Science
ISBN : 1482762056
On January 15, 2013, the Environmental Protection Agency (EPA) published a final rule revising the National Ambient Air Quality Standard (NAAQS) for particulate matter (PM). The revised air quality standards were completed pursuant to the Clean Air Act (CAA) and, in part, in response to a court order and consent agreement. Based on its review of scientific studies available since the agency's previous review in 2006, EPA determined that evidence continued to show associations between particulates in ambient air and numerous significant health problems, including aggravated asthma, chronic bronchitis, non-fatal heart attacks, and premature death. Populations shown to be most at risk include children, older adults, and those with heart and lung disease, and those of lower socioeconomic status. EPA's review of and revisions to the PM NAAQS has generated considerable debate and oversight in Congress. The January 2013 revisions change the existing (2006) annual health-based (“primary”) standard for “fine” particulate matter 2.5 micrometers or less in diameter (or PM2.5), lowering the allowable average concentration of PM2.5 in the air from the current level of 15 micrograms per cubic meter (µg/m3) to a limit of 12 µg/m3. The annual PM2.5 NAAQS is set so as to address human health effects from chronic exposures to the pollutants. The existing “24-hour primary standard” for PM2.5 that was reduced from 65 µg/m3 to 35 µg/m3 in 2006 was retained, as was the existing standard for larger, but still inhalable, “coarse” particles less than 10 micrometers in diameter, or PM10. “Secondary” standards that provide protection against “welfare” (non-health) effects, such as ecological effects and material deterioration, are identical to the primary standards and the same as in 2006. The proposed rule published June 29, 2012, solicited comments on two options for a 24-hour PM2.5 standard to improve visibility that were not adopted in the final rule. EPA revised the Regulatory Impact Analysis (RIA) accompanying its June 2012 proposed rule in part in response to comments received regarding the agency's cost and benefit estimates. In its December 2012 RIA, EPA estimated that the potential “quantifiable” health benefits (2010 $) associated with attaining the PM standard would range from $4.0 billion to $9.1 billion, and costs (2010 $) would range from $53.0 million to $353.0 million. Some stakeholders and some Members continue to express concerns that cost impacts would be more significant than those estimated by EPA for those areas out of compliance with the new standards. EPA's revisions to the PM NAAQS do not directly regulate emissions from specific sources, or compel installation of any pollution control equipment or measures, but indirectly could affect operations at industrial facilities and other sources throughout the United States. Revising PM NAAQS starts a process that includes a determination of areas in each state that exceed the standard and must, therefore, reduce pollutant concentrations to achieve it. Following determinations of these “nonattainment” areas based on multiple years of monitoring data and other factors, state and local governments must develop (or revise) State Implementation Plans (SIPs) outlining measures to attain the standard. These often involve promulgation of new regulations by states, and the issuance of revised air permits. The process typically takes several years. Based on statutory scheduling requirements, nonattainment designations for revised PM NAAQS would not be determined until the end of 2014, and states would have until at least 2020 to achieve compliance with the January 2013 revised PM2.5 NAAQS.
Author : National Research Council,Division on Earth and Life Studies,Board on Environmental Studies and Toxicology,Committee on Changes in New Source Review Programs for Stationary Sources of Air Pollutants
Publisher : National Academies Press
Page : 242 pages
File Size : 55,6 Mb
Release : 2005-02-14
Category : Science
ISBN : 9780309095785
The U.S. Environmental Protection Agency's New Source Review (NSR) programs are designed to help ensure that the construction or modification of factories, electric-generating facilities and other large stationary sources of pollutants will meet emissions criteria. EPA revised the programs in order to provide flexibility and allow for improved energy efficiency in American industry without damaging the environment. However, critics argue the revisions could slow progress in cleaning the nation's air, potentially damaging human health. This interim report provides a synthesis of relevant background information and describes the approach the committee will use to assess the potential impact of the NSR revisions. Conclusions will be issued in a final report later this year.
Author : Congressional Research Service
Publisher : CreateSpace
Page : 48 pages
File Size : 47,5 Mb
Release : 2015-01-07
Category : Political Science
ISBN : 1507543352
On January 15, 2013, the Environmental Protection Agency (EPA) published a final rule revising the National Ambient Air Quality Standard (NAAQS) for particulate matter (PM). The revised air quality standards were completed pursuant to the Clean Air Act (CAA) and, in part, in response to a court order and consent agreement. Based on its review of scientific studies available since the agency's previous review in 2006, EPA determined that evidence continued to show associations between particulates in ambient air and numerous significant health problems, including aggravated asthma, chronic bronchitis, nonfatal heart attacks, and premature death. Populations shown to be most at risk include children, older adults, and those with heart and lung disease, and those of lower socioeconomic status. EPA's review of and revisions to the PM NAAQS have generated considerable debate and oversight in Congress. The January 2013 revisions change the existing (2006) annual health-based (“primary”) standard for “fine” particulate matter 2.5 micrometers or less in diameter (or PM2.5), lowering the allowable average concentration of PM2.5 in the air from the current level of 15 micrograms per cubic meter (µg/m3) to a limit of 12 µg/m3. The annual PM2.5 NAAQS is set so as to address human health effects from chronic exposures to the pollutants. The existing “24-hour primary standard” for PM2.5 that was reduced from 65 µg/m3 to 35 µg/m3 in 2006 was retained, as was the existing standard for larger, but still inhalable, “coarse” particles less than 10 micrometers in diameter, or PM10. As it did in 2006, EPA set “secondary” standards that provide protection against “welfare” (nonhealth) effects, such as ecological effects and material deterioration, identical to the primary standards. EPA revised the Regulatory Impact Analysis (RIA) accompanying its June 2012 proposed rule in part in response to comments received regarding the agency's cost and benefit estimates. In its December 2012 RIA, EPA estimated that the potential “quantifiable” health benefits (2010 $) associated with attaining the PM standard would range from $4.0 billion to $9.1 billion, and costs (2010 $) would range from $53.0 million to $353.0 million. Some stakeholders and some Members continue to express concerns that cost impacts would be more significant than those estimated by EPA for those areas out of compliance with the new standards. EPA's revisions to the PM NAAQS do not directly regulate emissions from specific sources, or compel installation of any pollution control equipment or measures, but indirectly could affect operations at industrial facilities and other sources throughout the United States. Revising PM NAAQS starts a process that includes a determination of areas in each state that exceed the standard and must, therefore, reduce pollutant concentrations to achieve it. Following determinations of these “nonattainment” areas based on multiple years of monitoring data and other factors, state and local governments must develop (or revise) State Implementation Plans (SIPs) outlining measures to attain the standard. These include promulgation of new regulations by states, and the issuance of revised air permits. The process typically takes several years. As per statutory scheduling requirements, on December 18, 2014, EPA classified 14 areas as “Moderate” nonattainment for the revised 2013 primary annual PM2.5 standard. The areas include 38 counties or portions of counties in six states—California, Idaho, Indiana, Kentucky, Ohio, and Pennsylvania. EPA also deferred the designation period for 11 other areas by up to one year, and designated all other areas as “unclassifiable” or as “unclassifiable/attainment.” CAA section 188(c) requires Moderate areas to achieve attainment as expeditiously as practicable, but no later than six years after the effective date of final area designation.
Author : United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Clean Air, Climate Change, and Nuclear Safety
Publisher : Unknown
Page : 248 pages
File Size : 55,7 Mb
Release : 2009
Category : Air
ISBN : PSU:000066757245
Author : United States. Congress. House. Committee on Agriculture
Publisher : Unknown
Page : 182 pages
File Size : 47,8 Mb
Release : 1998
Category : Law
ISBN : STANFORD:36105117935549
Author : United States. Congress. House. Committee on Commerce. Subcommittee on Health and the Environment
Publisher : Unknown
Page : 418 pages
File Size : 44,9 Mb
Release : 1997
Category : Air
ISBN : PSU:000031671927
Author : United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Clean Air and Nuclear Safety
Publisher : Unknown
Page : 116 pages
File Size : 46,5 Mb
Release : 2012
Category : Air
ISBN : OCLC:800147026
Author : Congressional Research Service
Publisher : CreateSpace
Page : 30 pages
File Size : 43,8 Mb
Release : 2015-01-05
Category : Political Science
ISBN : 150754331X
On November 26, 2014, the Environmental Protection Agency (EPA) announced proposed revisions to the National Ambient Air Quality Standards (NAAQS) for ground-level ozone. If finalized, the proposal would set more stringent standards, lowering both the primary (health-based) and secondary (welfare-based) standards from the current 75 parts per billion (ppb) to somewhere in a range of 65 to 70 ppb. This report discusses the standard-setting process, the specifics of the current and past reviews, and issues raised by the proposal. NAAQS are standards for outdoor (ambient) air that are intended to protect public health and welfare from harmful concentrations of pollution. If EPA changes the primary standard for ozone to a lower level, it would be concluding that protecting public health requires lower concentrations of ozone pollution than were previously judged to be safe. In high enough concentrations, ozone aggravates heart and lung diseases and may contribute to premature death. Ozone also can have negative effects on forests and crop yields, which the secondary (welfare-based) NAAQS is intended to protect. NAAQS do not directly limit emissions of a pollutant; rather, they set in motion a long process in which states and EPA identify areas that do not meet the standards, and states prepare implementation plans to demonstrate how emissions will be lowered sufficiently to reach attainment. Ground-level ozone, or “smog,” is a widespread pollutant: as of July 2014, 123 million people (40% of the U.S. population) lived in areas classified “nonattainment” for the current 75 ppb ozone NAAQS. A more stringent standard might affect more areas. If the nonattainment designations were made using current data, 358 counties would be in nonattainment with a 70 ppb NAAQS (rather than 155 counties at 75 ppb); at 65 ppb, 558 counties would have monitors showing nonattainment. Emission sources in these areas might have to adopt more stringent controls. EPA maintains that most areas will be able to reach attainment of the new standards—whether at 65 or 70 ppb—as a result of already promulgated regulations for gasoline, autos, power plants, and other sources of emissions. Thus, the agency's estimates of the cost of NAAQS compliance are substantially lower than many earlier estimates. EPA estimates the cost of meeting a 70 ppb standard in all states except California at $3.9 billion annually in 2025; the cost of meeting a 65 ppb standard in the same states is estimated at $15 billion annually. Because most areas in California would have until the 2030s to reach attainment, EPA provided separate cost estimates for California ($0.80 billion to $1.6 billion annually in 2038). EPA's cost estimates are substantially less than one from the National Association of Manufacturers that was widely circulated before the release of EPA's proposal.
Author : National Academies of Sciences, Engineering, and Medicine,Division on Earth and Life Studies,Board on Environmental Studies and Toxicology,Committee on Assessing Toxicologic Risks to Human Subjects Used in Controlled Exposure Studies of Environmental Pollutants
Publisher : National Academies Press
Page : 159 pages
File Size : 52,8 Mb
Release : 2017-04-10
Category : Science
ISBN : 9780309452526
The U.S. Environmental Protection Agency (EPA) has a mission and regulatory responsibility to protect human health and the environment. EPA's pursuit of that goal includes a variety of research activities involving human subjects, such as epidemiologic studies and surveys. Those research activities also involve studies of individuals who volunteer to be exposed to air pollutants intentionally in controlled laboratory settings so that measurements can be made of transient and reversible biomarker or physiologic responses to those exposures that can indicate pathways of toxicity and mechanisms of air-pollution responses. The results of those controlled human inhalation exposure (CHIE) studies, also referred to as human clinical studies or human challenge studies, are used to inform policy decisions and help establish or revise standards to protect public health and improve air quality. Controlled Human Inhalation-Exposure Studies at EPA addresses scientific issues and provides guidance on the conduct of CHIE studies. This report assesses the utility of CHIE studies to inform and reduce uncertainties in setting air-pollution standards to protect public health and assess whether continuation of such studies is warranted. It also evaluates the potential health risks to test subjects who participated in recent studies of air pollutants at EPA's clinical research facility.