Field test of stormwater best management practices
- Univ. of Virginia, Charlottesville, VA (United States). Dept. of Civil Engineering and Applied Mechanics
- CH2M-Hill, Herndon, VA (United States)
A dry detention pond, hydraulically modified and draining a small and highly impervious area, and a highway median grassed swale in Charlottesville, Virginia were monitored for a fifteen-month period to test their ability in reducing stormwater pollution. Pollutants examined included total suspended solids, total phosphorus, chemical oxygen demand, and total zinc. The results indicate that for the modified dry pond (with a 7.6 cm or 3 in outflow orifice) an average removal rate of about 50% was obtained for total suspended solids; 40% for total phosphorus; and 30% for both chemical oxygen demand and total zinc. Slightly higher removal rates were obtained for the 31 m or 100 ft long swale with a check dam. Modeling analyses of the pond show that the pollutant removal rate is closely related to the total volume and the intensity of the rainfall events. Both the pond and the swale are fairly effective in removing pollutants when the rainfall volume is small and when storm intensity is low and duration is long.
- OSTI ID:
- 82792
- Report Number(s):
- CONF-940789-; ISBN 0-7844-0031-8; TRN: IM9533%%250
- Resource Relation:
- Conference: American Society of Civil Engineers 1994 National Council on Environmental Engineering (NCEE) conference on critical issues in water and waste water treatment, Boulder, CO (United States), 11-13 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of Critical issues in water and wastewater treatment. Proceedings of the 1994 national conference on environmental engineering; Ryan, J.N.; Edwards, M. [eds.] [Univ. of Colorado, Boulder, CO (United States). Dept of Civil, Environmental, and Architectural Engineering]; PB: 824 p.
- Country of Publication:
- United States
- Language:
- English
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