IMPACT OF ANNUAL AVERAGE DAILY TRAFFIC ON HIGHWAY RUNOFF POLLUTANT CONCENTRATIONS

The aim of this study was to evaluate correlations between annual average daily traffic (AADT) and storm water runoff pollutant concentrations generated from Caltrans (California Department of Transportation) highway sites. Analyses of data collected from the Caltrans 4-year (1997-2001) highway runoff characterization program revealed that, in general, pollutant concentrations of urban highways were higher than those of nonurban highways. For a limited number of pollutants, however, the concentrations from nonurban highways were found to be higher than the concentrations from urban highways. No direct linear correlation was found between highway runoff pollutant event mean concentrations and AADT. However, through multiple regression analyses, it was shown that AADT has an influence on most highway runoff constituent concentrations, in conjunction with factors associated with watershed characteristics and pollutant build-up and wash off. The other noticeable factors shown to influence the accumulation of pollutants on highways were antecedent dry period, drainage area, maximum rain intensity, and land use.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8675387
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Kayhanian, M
  • Singh, A
  • Suverkropp, C
  • Borroum, S
• Publication Date: 2003-11

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 975-990
• Serial:
  • Journal of Environmental Engineering
  • Volume: 129
  • Issue Number: 11
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9372
  • Serial URL: http://ojps.aip.org/eeo

Subject/Index Terms

• TRT Terms: Environmental impacts; Environmental phenomena; Pollutants; Pollution of specific environments; Runoff; State departments of transportation; Surface course (Pavements); Water quality
• Identifier Terms: California Department of Transportation
• Geographic Terms: California
• Subject Areas: Environment; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00964598
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 26 2003 12:00AM