epa ozone standard Articles

  • EPA clamping down on Ozone standards

    The U.S. Environmental Protection Agency (EPA) is preparing to again lower its ozone standard. This action reduces the amount of ozone that is allowed in the air we breathe and thus forces more industrial sources to further reduce their air pollution emissions. In this white paper we look at: What will happen when the new ozone standard is finalized; and Ways to deal ...

  • EPA’s proposal to revise the air quality standards for ground-level ozone

    OnJune 20, 2007, the U.S. Environmental Protection Agency (EPA) proposed to strengthen the nation’s air quality standards for ground-level ozone. Recent scientific literature has improved our understanding of the adverse effects of ozone on both human health and the environment. This article summarizes the latest scientific knowledge on the effects of ozone and the key aspects of EPA’s proposal ...

  • U.S. EPA Propses Revisions to Ozone NAAQS

    In May 2008, states, environmental groups, and industry groups filed petitions with the D.C. Circuit Court of Appeals (Court) for review of the 2008 ozone standards.  In March 2009, the Court granted a U.S. EPA request to stay the litigation so that the Obama administration could review the standards and determine whether they should be reconsidered. On September 16, 2009, U.S. EPA announced ...


    By All4 Inc.

  • EPA Reviews National Ambient Air Quality Standards for Ozone, and Other Recent CAA Developments

    EPA Reviews National Ambient Air Quality Standards For Ozone: On December 17, 2014, the U.S. Environmental Protection Agency (EPA) issued a proposed rule revising the air quality criteria for ozone (O3) and related photochemical oxidants and National Ambient Air Quality Standards (NAAQS) for O3. 79 Fed. Reg. 75234. EPA proposed to revise the primary standard to a level within ...


    By Bergeson & Campbell, P.C.

  • EPA’S 2010 proposed ozone NAAQS, presented at EUEC 2010

    Ozone NAAQS Overview Background –Why are revisions already being proposed to the March 2008 Ozone NAAQS? What are the proposed new ozone NAAQS? Expected Timeline Impacts Recent Ozone Standard Revisions Less than 2 years ago (March 12, 2008)EPA revised the 8-hour ozone standard Primary ...


    By Trinity Consultants

  • Ozone Brings Better Bottled Water

    The proliferation of bottled beverages worldwide and an increased awareness of consumer health issues have beverage bottlers rethinking how to keep their liquids safe for consumption. One problem they face is the need to deliver a product that is free of bacteria, to provide extended shelf life and product quality. Ozone has quickly become the disinfectant of choice among water bottlers ...

  • Legal Lookout: EPA Staff Urges Changes in PM Standards

    Earlier this year, EPA staff scientists urged agency management to revise the current particulate matter (PM) standards for fine particles and the inhalable portion of coarse particles, based on evidence that suggests to EPA scientists that more protection is needed than is provided under current air standards. Background The Clean Air Act (CAA) requires that EPA periodically review its ...


    By Bergeson & Campbell, P.C.

  • Impacts of Ozone Nonattainment Designation and Strategies for Compliance

    In 1997, the U.S. Environmental Protection Agency (U.S. EPA) revised the National Ambient Air Quality Standards (NAAQS), to include an 8-hour ozone standard. The previous 1-hour ozone standard addressed the effects of exposure to short periods of high concentrations of ground-level ozone. The intent of the new standard is to address exposure to lower ozone levels over longer durations. With the ...


    By Trinity Consultants

  • Ozone precursor analysis using a thermal desorption-GC System

    In the United States, the Clean Air Act of 1970 gave the U.S. Environmental Protection Agency (EPA) responsibility for maintaining clean air for health and welfare. Six parameters are measured routinely in ambient air: SOx, NOx, PM10 (particulate matter less than 10 microns), Pb, CO and ozone. In the 1990 Clean Air Act Amendments, Title 1 expanded the measurements in air to include volatile ...


    By PerkinElmer, Inc.

  • EPA compliance - Refrigerant Management

    Everyone's Responsibility Today, the environment is everyone's responsibility. Are you taking an active part to keep it clean? We've all heard about the ozone layer. Ozone depletion in the atmosphere has become an increasing problem ...


    By IHS

  • Air pollution by ozone across Europe during summer 2012

    Despite efforts to mitigate ozone pollution, the number of exceedances of EU ground-level ozone concentration standards for protecting human health (Directive 2008/50/EC) remained at serious levels during summer 2012 (1). In the summer of 2012, the threshold of 120 micrograms per cubic metre of air (ìg/m3) maximum daily eight-hour mean was exceeded on more than 25 days again across large ...

  • Modeling Tip: Using Ozone File Editor Tools in BREEZE AERMOD

    To model 1-hour and annual concentrations of NO2 for the National Ambient Air Quality Standard (NAAQS), the U.S. EPA has approved a three-tiered approach as detailed in Section 5.2.4 of EPA’s Guideline on Air Quality Models, Appendix W to 40 CFR Part 511 (Appendix W). This approach, as shown below, is recommended to estimate the ambient concentrations of ...

  • National Ambient Air Quality Standards Update

    You have seen ALL4 documenting the corresponding evolution of the NAAQS levels since the current U.S. EPA administration started in January 2009, and we will continue to follow them closely and provide you with updates that we think are important to your operations.  The following sections provide updates on the most important NAAQS and how you can plan for them today.  Discusses SO2, ...


    By All4 Inc.

  • New NO2 air standards prove technically challenging

    On February 9, 2010, the U. S. Environmental Protection Agency (EPA) established a new National Ambient Air Quality Standard (NAAQS) for nitrogen dioxide (NO2). The new NO2 NAAQS is a one-hour standard set at 100 parts per billion (ppb), which is approximately 188 micrograms per cubic meter (μg/m3). Effective on April 12, 2010, the new one-hour standard is intended to protect against peak ...


    By Trinity Consultants

  • `Challenges Facing Facilities in 8-Hour Ozone and/or PM2.5 Nonattainment Areas,` presented at the 2005 TAPPI Environmental conference

    Abstract In 2004, U.S. EPA finalized designations under the 8-hour ozone standard and the fine particulate matter :'PM:...) standard. With respect to the 3-hour ozone standard, 474 counties or partial counties were designated as nonattainment, while 30 areas volunteered to enter Early Action Compacts (EAC). U.S. EPA designated 40 areas comprised of 210 counties and the District of Columbia ...


    By Trinity Consultants

  • `Impacts of Ozone Nonattainment Designation and Strategies for Compliance,` presented at the 2004 AWMA annual conference

    Abstract In 1997, the U.S. Environmental Protection Agency (U.S. EPA) revised the National Ambient Air Quality Standards (NAAQS), to include an 8-hour ozone standard. The previous 1-hour ozone standard addressed the effects of exposure to short periods of high concentrations of ground-level ozone. The intent of the new standard is to address exposure to lower ozone levels over longer ...


    By Trinity Consultants

  • New American air quality standards focus on public health

    The US Environmental Protection Agency has significantly strengthened its national ambient air quality standards (NAAQS) for ground-level ozone, the primary component of smog. These changes will improve both public health protection and the protection of sensitive trees and plants. Based on its review of the air quality criteria for ozone (O3) and related photochemical oxidants and national ...

  • NSR Changes in the Phase 2 Final Rule to Implement 8-hour Ozone NAAQS

    Introduction On November 29, 2005, Phase 2 of the final rule to implement the 8-hour Ozone National Ambient Air Quality Standard (NAAQS) was promulgated in the Federal Register (70 FR 71612).  Among other issues, the final rule addresses reasonably available control technology (RACT) and reasonably available control measures (RACM), reasonable further progress (RFP), modeling and ...


    By Trinity Consultants

  • Methodologies for incorporation of synergistic effects in the calculation of the Pollutant Standards Index

    The United States Environmental Protection Agency (EPA) developed the Pollutant Standards Index (PSI) in order to provide the public with an overall assessment of daily air quality. PSI values are determined from measured concentrations of five criteria air pollutants carbon monoxide, nitrogen dioxide, ozone, sulfur dioxide, and particulate matter (PM-10). In general, the PSI can be considered a ...


    By Inderscience Publishers

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