EPISODIC EMISSION CONTROL PROGRAMS DURING HIGH OZONE DAYS. A COST-EFFECTIVE APPROACH TO MAINTAINING AIR QUALITY

A recent decision by the Environmental Protection Agency (EPA) to allow trip reduction programs to be implemented on a seasonal rather than year-round basis has been hailed by public officials and the business community as a welcome and much needed relaxation of the onerous Employee Commute Options (ECO) requirement. The ruling implicitly acknowledges what many observers had claimed all along: driving restrictions need not be enforced every day of the year in order to achieve compliance with the Clean Air Act. Rather, national ambient air quality standards can be maintained by instituting driving restrictions on an "as needed" basis, i.e. when ozone concentrations threaten to reach harmful levels. EPA maintains that these conditions extend continuously throughout the summer months, hence the need for seasonal restrictions. Many state and local officials contend that even during summer months incidents of high pollution occur only sporadically, thus the argument for intermittent or episodic driving restrictions. A study by the Coalition for Episodic Controls concludes that: episodic controls are effective; ozone exceedances can be predicted promptly enough to prevent standards violations; and the public would respond more readily to a program that called only for occasional sacrifice in convenience. The study's conclusions are based on an examination of episodic emission control programs; a summary of these case studies is presented.

  • Availability:
  • Corporate Authors:

    Urban Mobility Corporation

    1133 15th Street, NW, Suite 1200
    Washington, DC  United States  20005
  • Publication Date: 1994-10

Language

  • English

Media Info

  • Pagination: 4 p.
  • Serial:
    • Innovation Briefs
    • Volume: 5
    • Issue Number: 7
    • Publisher: Urban Mobility Corporation
    • ISSN: 1071-393X

Subject/Index Terms

Filing Info

  • Accession Number: 00672177
  • Record Type: Publication
  • Source Agency: Federal Transit Administration
  • Files: TRIS, USDOT
  • Created Date: Dec 30 1995 12:00AM