PHOTOCHEMICAL OXIDANT MODELING. VOLUME I - TECHNIQUES APPLICABLE TO HIGHWAY SYSTEM EVALUATION

This report presents a comparative discussion and evaluation of the modeling techniques available to assess the photochemical oxidant air quality impact of highway system modification or development. Five attributes of eight modeling techniques are discussed. The eight methods considered, in order of increasing complexity, are: (1) VMT Change, (2) Linear Rollback, (3) Nonlinear Rollback: Appendix J, (4) Gifford-Hanna Photochemical Model, (5) Statistical Relationships: Diffusion Kinetics Model, and (8) Urban Air Shed Photochemical Simulation Model. For each of these the following five attributes are discussed: (1) applicability and reliability, (2) data and manpower requirements, (3) use of the technique, (4) limitations, and (5) special features. The information presented in this report gives guidance towards choosing a model best suited to a given need, based on compatibility with these attributes.

• Corporate Authors:

  GCA Corporation

  GCA Technology Division
  Bedford, MA  United States  01730

  Environmental Protection Agency

  Office of Air Quality Planning and Standards
  Research Triangle Park, NC  United States  27709
• Authors:
  • Record, F A
  • Patterson, R M
  • Bryant, D
  • Castaline, A H
• Publication Date: 1975-4

Media Info

• Pagination: 108 p.

Subject/Index Terms

• TRT Terms: Air; Air pollution; Alternatives analysis; Computer programming; Exhaust gases; Forecasting; Highway planning; Highways; Hydrocarbons; Kinetics; Mathematical models; Motor reactions; Nitric oxide; Nitrogen oxides; Optical diffusion; Oxidizers; Oxidizing agents; Ozone; Photochemical reactions; Photochemistry; Quality control; Reliability; Specifications; Statistical analysis; Utilization
• Uncontrolled Terms: Models; Quality; Requirement
• Old TRIS Terms: Diffusions; Oxidant; Reaction kinetics
• Subject Areas: Data and Information Technology; Design; Economics; Highways; Research; Society;

Filing Info

• Accession Number: 00093678
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: GCA-TR-75-11-G-Vol 1Final Rpt., EPA/450/3-75-069-a
• Contract Numbers: DI-68-02-1376
• Files: TRIS
• Created Date: Feb 4 1976 12:00AM