pm2.5 standard Articles

  • A practical guide to PM2.5

    By now you’ve likely heard about U.S. EPA’s final rules governing the implementation of the New Source Review (NSR) program for fine particulate matter (i.e., particulate matter with an aerodynamic diameter less than 2.5 microns, or PM2.5). ALL4 published two articles in 2008 addressing specific aspects of the PM2.5 NSR rule. ALL4 has since formally established a PM2.5 Team to ...


    By All4 Inc.

  • PM2.5 Air Quality Modeling Updates

    There has been much activity over the past six (6) months that will impact how air quality modeling analyses will be conducted for Prevention of Significant Deterioration (PSD) permit applications with respect to particulate matter less than 2.5 microns (PM2.5).  As the resident air quality modeling expert at ALL4, I thought it ...


    By All4 Inc.

  • EPA shifts PM2.5 PSD permitting policies

    On August 12, 2009, EPA created a significant stir in the regulated community when it issued an order that signals a significant shift in how the agency intends particulate matter with a diameter less than 2.5 micrometers (PM2.5) emissions to be regulated under the Prevention of Significant Deterioration (PSD) program. The order specifically applied to petitions filed by environmental groups ...


    By Trinity Consultants

  • Is it time to upgrade the PM2.5 federal reference method?

    The fine particulate matter (PM2.5) Federal Reference Method (FRM) has in many respects been a great success. When the method was implemented, there was some doubt that the state and local monitoring agencies that routinely provide air quality data would be able to manage a program, which often distinguishes one location from another by just a few μg/m3. As it turns out, data from the FRM ...

  • Scavenging of PM2.5 by precipitation and the effects of precipitation pattern changes on health risks related to PM2.5 in Tokyo, Japan

    Fine particulate matter (aerodynamic diameter <2.5 μm; PM2.5) poses risks to human health. While precipitation is the main process for decreasing ambient pollutant concentrations, scavenging of PM2.5 by precipitation remains to be investigated. Here we formulated the processes of PM2.5 scavenging by precipitation from observed PM2.5 concentrations ...


    By IWA Publishing

  • Implications for UK coal-fired power stations of a move to a particulate matter standard based on PM2.5

    The contribution of UK coal-fired power stations to ambient PM2.5 concentrations has been assessed using short- and long-range modelling. The results suggested a minimal contribution from power stations to both local and regional concentrations of PM2.5 relative to the standards in the proposed European ...


    By Inderscience Publishers

  • Can You Avoid Workplace Injuries? What You Need to Know.

    Perfection is an admirable goal but an unattainable standard. While you can’t completely eliminate workplace injuries, you can effectively reduce risk by following these safety tips that apply to any business or industry. 1. Maintain a Clean Workplace ...


    By DJProducts, Inc.

  • Fine Particulate Series: PM2.5 nonattainment — What you need to know

    In the March 2009 4 The Record article “A Practical Guide to PM2.5,” ALL4’s PM2.5 Team discussed the technical basics of PM2.5 and the specific steps that you can take to assess your position with regard to the challenging regulatory landscape that lies ahead. This month’s article aims to fill in a few technical details regarding PM2.5 nonattainment areas, including a ...


    By All4 Inc.

  • `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

  • Reduced PM2.5 in Trujillo, Peru, on El Dia Sin Autos (“The Day Without Cars”)

    Street-level and rooftop (three-story building) concentrations of particulate matter ≤2.5 µm in diameter (PM2.5) were measured in downtown Trujillo, Peru, in July and August 2003 to determine the PM2.5 concentration reduction on days with normal traffic conditions (32 days) versus a day when motor vehicles were temporarily banned from the downtown district (8:00 a.m. to 6:00 p.m., ...

  • Expect Tighter Particulate Matter Standards

    Particulate matter (PM) is a hot button issue poised to raise business costs and litigation. The U.S. Environmental Protection Agency (EPA) was recently due to issue final PM standard revisions. EPA last year proposed stronger National Ambient Air Quality Standards (NAAQSs) for fine PM (2.5 micrometers or less in diameter (PM2.5)) and the 24-hour PM2.5 standard. However, EPA sought to keep annual ...


    By Bergeson & Campbell, P.C.

  • Standard Chlorine of Delaware Remediation

    By designing a 70-foot deep barrier wall, Black & Veatch was able to cut off contaminant source areas from a creek near New Castle, Delaware. The groundwater treatment system that Black & Veatch designed prevents site contamination from reaching the underlying drinking water aquifer. The Standard Chlorine of Delaware Site is a 65 acre area including an abandoned chlorobenzene ...


    By Black & Veatch Corporation

  • Washington: hazard standards

    The Occupational Safety and Health Administration (OSHA) proposed on Sept. 30, 2009, to align the Hazard Communication Standard (HCS) with provisions of the United Nations Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The HCS requires chemical manufacturers and importers to evaluate chemical hazards and provide information to subsequent users. The standard now ...


    By Bergeson & Campbell, P.C.

  • Standard Process Industrial Case Study

    The Standard Process company is a vitamin and food supplement manufacturer in business since 1929 located in an environmentally sensistive area called the Kettle Moraine basin. The basin is an area containing rare species with diverse habitats. The Standard Process company realizes this and has helped preserve this area with their organic farming techniques, waste reduction methods and now with ...


    By Biowater Technology

  • Expansion yields quality standards in Europe

    ' No aerosols/odors, maintenance savings, turndown capability, and improved treatment' resulted with the AIRE-O2® aerators, reported the engineer Problem This European chemical company’s propylene oxide/tertiary butyl alcohol plant decided to expand its activated sludge system. The existing 1.58 MG (6,000 m 3) concrete basin had reached capacity. Also, three 60 hp (45 kW) surface ...

  • Prospering with the New ISO Energy Standards

    According to the USEPA, energy use in commercial and industrial buildings costs U.S. companies about $200 billion per year. And for many businesses, energy costs (with unit prices rising every year) are among their largest expenses. Therefore, the direct financial benefits of reducing energy use should drive all companies – even non-“smoke stack” facilities – to establish ...


  • LegalLookout: EPA Proposes Tighter PM Standards

    Untitled Document EPA has been busy addressing particulate matter (PM), a mixture of very fine particles and/or liquid droplets to which exposure is, according to the agency, ...


    By Bergeson & Campbell, P.C.

  • 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.

  • Osha issues final standard on hexavalent Chromium

    After years of trying to craft an exposure standard for hexavelant chromium that would stand up under expected court challenges, the Occupational Safety and Health Administration (OSHA) issued a final standard on February 28, 2006 which became effective on May 29, 2006. Under the standard, the Permissible Exposure Limit (PEL) for exposure to hexavalent chromium will be lowered from 52 to 5 ...


    By Atlantic Environmental, Inc.

  • An Alternative to the Cathead and Rope for the Standard Penetration Test

    Previous studies by the authors have found that a cathead and rope when used to perform standard penetration tests (SPT) have resulted in energies reaching the striker plate or anvil substantially less than those resulting from a complete or 100% free fall. In fact, depending on variables such as the number of turns of rope around the cathead, the rope age, cathead speed, and method of rope ...


    By ASTM International

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