OHIO AIR QUALITY METHODOLOGY

Elements associated with transportation generated air pollutants and the methodology (based on the Highway Line Source Dispersion Model) employed to analyze them are discussed. The five principal factors which influence the concentration and pollution are identified (traffic volume, emission factors, meteorological parameters, highway design and dispersion parameters) and discussed, and the Worst Case Concept is detailed. This concept of predictive analysis is accomplished by the use of certain factors and assumptions which constitute nearly the worst conditions or situations likely to be encountered. The air quality for a project is based on computing the maximum pollutant concentration for Carbon monoxide (CO) at various offsets from the edge of the roadway shoulder. The determinations of the total 1-hour concentration that a receptor will receive, the 8-hour calculation, stability classes, procedures employed in air quality considerations in Ohio, the Indirect Source Review Regulation, improvement projects (new and modified existing facility) are described. Future expectations related to Oxidant models and NOX models are noted.

  • Supplemental Notes:
    • Proceedings of the twenty-ninth annual Ohio Transportation Engineering Conference, conducted by the Department of Civil Engineering, in cooperation with the Ohio Department of Transportation.
  • Corporate Authors:

    Ohio State University, Columbus

    Department of Civil Engineering
    Hitchcock Hall 470
    Columbus, OH  United States  43210
  • Authors:
    • Davidson, H C
  • Publication Date: 1975-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00127894
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM