air data epa Articles

  • Data Requirements Air Emissions/Off-Gases

    Predictive modeling may be usefelected to represent the system (e.g., SVE treatment, incinerator, etc.), and site and contaminant informaul in estimating emissions from a site or treatment system. An appropriate theoretical model is stion is used to estimate gross emissions. Because many variables affect emission rates, this approach is limited by the representativeness of the model and by the ...

  • The Use of Real-Time Air Quality Data in Daily Forecasting and Decision-Making

    The feature articles published in this month’s issue describe various near-realtime data resources and provide examples of how they are being used to facilitate air quality forecasting and daily decision-making. The articles reinforce the importance of making as much environmental data as possible available to the public in real time. The major national source of realtime air quality data is ...

  • Performing CALPUFF Analyses with Pseudo-station Data Derived from MM5 Data

    The U.S. Environmental Protection Agency (EPA) recommends that CALPUFF be used as the preferred model for long-range transport analyses in the proposed “Guideline on Air Quality Modeling” (April 2000). In practice, CALPUFF has been routinely required by the Federal Land Managers (FLM), EPA, and state regulatory agencies for Class I area analyses for several years. These analyses include regional ...

  • EPA Compliant Letter

    APPENDIX I (Continued) B. Air Monitoring Equipment There are different methods available for air monitoring. These include colorimetric detector tubes (e.g., National Draeger, Sensidyne, Matheson-Kitagawa, MSA) and realtime remote sensing monitors (e.g., PureAire Monitoring Systems). NOTE: These air monitoring methods apply to enclosed areas, including greenhouse soil ...

  • Potential Benefits and Implementation of MM5/RUC2 Data with the CALPUFF Air Modeling System

    In April 2003, U.S. EPA officially revised the federal guidelines for air quality modeling (40 CFR Part 51, Appendix W) to incorporate CALPUFF as the preferred dispersion model to study long-range pollutant transport for regulatory purposes. At the absolute minimum, CALMET (CALPUFF’s meteorological preprocessor) requires hourly measurements of surface meteorological data and twice-daily upper air ...

  • Environmental Profile of the Air Transportation Industry

    Introduction The EPA's Office of Compliance has developed a series of profiles or notebooks containing information on selected major industries. These notebooks, which focus on key indicators that holistically present air, water, and land pollutant release data, have been thoroughly reviewed by experts from both inside and outside the EPA. What will you find in this ...

  • Potential Benefits and Implementation of MM5/RUC2 Data with the CALPUFF Air Modeling System

    In April 2003, U.S. EPA officially revised the federal guidelines for air quality modeling (40 CFR Part 51, Appendix W) to incorporate CALPUFF as the preferred dispersion model to study long-range pollutant transport for regulatory purposes. At the absolute minimum, CALMET (CALPUFF’s meteorological preprocessor) requires hourly measurements of surface meteorological data and twice-daily upper air ...


    By Trinity Consultants

  • EPA Regulations Raise the Bar for Industrial Air Quality Testing

    Far-reaching environmental legislation continues to change the way Americans live, work, and run their businesses. For the past ...

  • Comparison of AERMOD and EIAA with respect to the Alaska tracer data

    This paper inter-compares the performance of AERMOD and EIAA (the current Chinese regulatory model) against the Alaska tracer field experiment. The predicted maximum arc-wise Ground Level Concentrations (GLC) are compared with the observed tracer field data. The scatter plots, QQ plots, and residual plots are examined. EIAA frequently underestimates the GLC because it lacks any downwash ...


    By Inderscience Publishers

  • BREEZE Met Data Facilitates Long Range Dispersion Modeling

    U.S. EPA requires that facilities located within 200 km of Class I areas or others with visibility degradation issues conduct long-range dispersion modeling studies. CALPUFF, an EPA-approved model for long-range transport modeling, is a non-Gaussian, non-steady state, puff model that operates in a Lagrangian framework, unlike the Eulerian approach used by Gaussian dispersion models. The extensive ...

  • Recent Federal Developments

    WEBINAR -- FIFRA Hot Topics In Pesticide, Biocides, And Other Agricultural Chemicals Regulation And Litigation, April 24, 2019, 1:00 p.m. - 2:00 p.m. (EDT): Bergeson & Campbell, P.C. (B&C®) is pleased to present the complimentary webinar “FIFRA Hot Topics in Pesticide, Biocides, and Other Agricultural Chemicals Regulation and Litigation.” ...


    By Bergeson & Campbell, P.C.

  • California Air Resources Board (CARB) places higher restrictions on air pollution

    As part of the California Global Warming Solutions Act (AB 32) the Air Resources Board (ARB) has approved an early action measure to reduce high-global warming potential (GWP) greenhouse gas (GHGs) emissions by establishing new legislation and defining requirements related to improved monitoring of AC/HVAC systems, enforcement of regulations, reporting of refrigerant usage, and recovery, ...


    By Accruent

  • Keeping the Increasing Complexity of Air Dispersion Modeling in Check

    Driven by advances in scientific knowledge, tightening and constantly changing regulations, and higher-resolution raw data, environmental modeling is demanding more and more from EH&S professionals and their computers. AERMOD run times for large projects are measured in days rather than minutes and terrain data file sizes routinely exceed 100 MB. Modelers can increase productivity and keep ...

  • General Air Sampling Guidelines (PDF)

    This Standard Operating Procedure (SOP) provides guidance in developing and implementing sampling plans to assess the impact of hazardous waste sites on ambient air. It presents the United States Environmental Protection Agency/Environmental Response Team's (U.S. EPA/ERT's) approach to air sampling and monitoring and identifies equipment requirements. It is not within the scope of this SOP to ...

  • EPA launches online discussion

    Ever read a U.S. Environmental Protection Agency (EPA) press release and say to yourself or others, “Gee, why is EPA pursuing that matter - there are a lot of other more important enforcement priorities?” Well, now is your chance to help shape EPA’s 2011- 2013 fiscal years enforcement priorities. EPA launched an online discussion forum on August 31 to receive input on future priorities for EPA’s ...


    By Bergeson & Campbell, P.C.

  • EPA - China case study

    The first online air quality monitoring network for a 27 km2 industrial area The monitored area Situated south of Shanghai, in Zhejiang province Heavily industrialized area Main activity: fine chemicals 10 plants under surveillance, under the authority of the Chinese governmental agency for environmental protection (EPA) ...


    By Alpha MOS Environment

  • Expert Interview: Pushing Air Pollution Control Technology Forward

    Catalytic Products International has a rich history of innovation and expertise in the field of air pollution control technology, as well as a goal of providing our customers with the knowledge that will help them meet their air pollution control needs. As part of our ongoing series of blogs in which we interview members of ...

  • Technology: clean air’s unsung hero

    Last year, we celebrated the 40th anniversary of the U.S. Clean Air Act (CAA) and the 20th anniversary of the 1990 Amendments to the CAA. The CAA has been a huge success. From 1990 to 2008, emissions of six common pollutants were down 41%, while gross domestic product grew 64%. Emissions of volatile organic compounds dropped 31%, carbon monoxide dropped 46%, and sulfur dioxide dropped 51%. Lead ...

  • 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

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you