Loading Rates and Characteristics of Litter from Highway Stormwater Runoff

강우로 인해 고속도로로부터 유출되는 폐기물의 성상, 부하량 및 유출 특성

  • Kim, Lee-Hyung (Dept. of Civil & Environ. Engr., Disaster Prevention Research Center, Kongju National University) ;
  • Kang, Joohyon (Dept. of Civil & Environ. Engr., University of California)
  • Received : 2004.03.31
  • Accepted : 2004.08.09
  • Published : 2004.09.30

Abstract

Litter wastes on highway runoff are gradually being considered one of the major pollutants of concern in protecting the integrity of receiving waters for beneficial use. The California State Water Resources Control Board has identified in their 303(d) list at least 36 water bodies where trash or litter is considered a pollutant of concern. The first TMDL adopted by the Region 4 (Los Angeles area) of the California State Water Quality Control Board was for trash in the Los Angeles River. The first flush characteristic study was developed to obtain first flush water quality and litter data from representative stormwater runoff from standard highway drainage outfalls in the Los Angeles area. Total captured gross pollutants in stormwater runoff were monitored at six Southern California highway sites over two years. The gross pollutants were 90% vegetation and 10% litter. Approximately 50% of the litter was composed of biodegradable materials. The event mean concentrations show an increasing trend with antecedent dry days and a decreasing trend with total runoff volume or total rainfall. Event mean concentrations were ranged 0.0021 to 0.259g/L for wet gross pollutants and 0.0001 to 0.027g/L for wet litters. The first flush phenomenon was evaluated and the impacts of various parameters such as rainfall intensity, drainage area, peak flow rate, and antecedent dry period on litter volume and loading rates were evaluated. First flush phenomenon was generally observed for litter concentrations, but was not apparent with litter mass loading rates. Litter volume and loading rates appear to be directly related to peak storm intensity, antecedent dry days and total flow volume.

Acknowledgement

Supported by : California 교통국

References

  1. 김이형, Monitoring and modeling of pollutant mass in urban runoff washoff. buildup and litter, Ph.D Dissertation, UCLA, U.S.A. (2002)
  2. California Department of Transportation (Caltrans), Gross solids removal devices (GSRD) pilot study 2000-2001 interim report, Document No. CTSW-RT-01-047, CA, U.S.A. (2001)
  3. California Regional Water Quality Control Board (CRWQCB), Trash total maximum daily loads for the Los Angeles river watershed, CA, U.S.A. (2001)
  4. California State Water Resources Control Board (CSWRCB), 1998 California 303(d) list and TMDL priority schedule, CA, U.S.A. (1999)
  5. Corwin, D. L., Vaughan, P. J., Modeling nonpoint source polutants in the vadose zone with GIS, Environ Sci. & Tec., 31, pp. 2157-2175 (1997)
  6. Horan, N. J., BiologicιIi wastewater treatment system-theory and operation, John Wiley & Sons, England, UK (1990)
  7. Irish, Jr L. B., Barrett, M.E., Malina, Jr J. F., Charbeneau, R. J., Use of regression modeIs for analyzing highway stormwater loads. J. Environ Eng, 124, pp. 987-993 (1998)
  8. Kayhanian, M., Kummerfeldt, S., Kim, L-H., Gardiner, N., and Tsay , K., Litter pollutograph and loadograph, Proceedings of 9th International Conference on Urban Drainage, Portland Portland, Oregon (2002)