CONTAMINANT DETENTION IN HIGHWAY GRASS FILTER STRIPS
A 17-month sampling campaign was initiated to investigate the potential for vegetated highway shoulders to retain suspended solids, metals, and total petroleum hydrocarbons (TPH). A site along SR 8 in Western Washington was selected and three full-scale test plots constructed for evaluation of contaminant retention capability. The data indicated that TPH and suspended solids were effectively removed. Metal concentration reduction was also effective when consideration was given to inadvertent pretreatment afforded by the highway runoff collection system. Consequently, the vegetated highway shoulder, located along hundreds of miles of highway can provide a cost effective means of contaminant retention.
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Corporate Authors:
Washington State University, Pullman
Washington State Transportation Center
Pullman, WA United States 99164Washington State Department of Transportation
Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
Olympia, WA United States 98504-7300Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Yonge, D R
- Publication Date: 2000-1
Language
- English
Media Info
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 73 p.
Subject/Index Terms
- TRT Terms: Contaminants; Cost effectiveness; Field tests; Filtration; Grasses; Hydrocarbons; Metals; Road shoulders; Runoff; Suspended sediments; Vegetation
- Uncontrolled Terms: Contaminant retention; Total petroleum hydrocarbons (Tph)
- Geographic Terms: Washington (State)
- Subject Areas: Design; Environment; Highways; Hydraulics and Hydrology; Planning and Forecasting; I21: Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00791625
- Record Type: Publication
- Report/Paper Numbers: WA-RD 474.1,, Final Research Report
- Contract Numbers: T9902-15
- Files: TRIS, ATRI, USDOT, STATEDOT
- Created Date: Apr 28 2000 12:00AM