00713566

Component

http://onlinepubs.trb.org...trr/1995/1483/1483-014.pdf

https://scholar.google.co...ling&publication_year=1995

Stormwater runoff from heavily travelled urban highways can adversely affect the quality of receiving waters. Nonpoint pollutants in highway runoff include heavy metals, suspended solids, micro-organics, oils and chlorides. These anthropogenic pollutants result from traffic activities, atmospheric deposition, engine exhaust, roadway degradation and highway maintenance. An effective control strategy for trapping runoff pollutants, especially heavy metals and suspended solids, is a partial exfiltration trench (PET). A PET is an engineered trench designed to exfiltrate some of the runoff captured during "first-flush" periods or long duration hydrographs. Narrow PETs installed outside the travelled pavement serve as multipurpose replacements for underdrains and can be located in restricted rights-of-way where space constraints preclude other pollutant control options. The hypothesis that heavy metal concentrations are significantly correlated to suspended solids in highway runoff is investigated in this paper. Runoff data from eight highway sites in the United States and Europe are analyzed to test this hypothesis. Results indicate a strong positive correlation between heavy metals and suspended solids for snow washoff events and a weaker positive correlation for rainfall events. Similar results are observed for correlations between heavy metals and suspended solid particle sizes. It is argued that a PET holds promise as an effective device for immobilizing heavy metals and trapping suspended solids generated during snow washoff, pavement "first-flush" and long duration rainfall events.

This paper appears in Transportation Research Record No. 1483, 1993 Midwest Floods and Water Quality Best Management Practices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01399791

English

p. 112-119

1995

Transportation Research Record

Figures (4) ; References (20) ; Tables (5)

Chlorides; Drainage; Heavy metals; Oils; Pollutants; Rainfall; Runoff; Snow; Suspended sediments; Urban highways; Water quality

Removal

Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

TRIS, TRB

Nov 16 1995 12:00AM

• CURRENT WATER QUALITY BEST MANAGEMENT PRACTICES DESIGN GUIDANCE
• EFFECTS OF FEDERAL LEVEES AND RESERVOIRS ON 1993 FLOOD STAGES IN ST. LOUIS
• EFFECTS OF STORM WATER REGULATIONS ON COLORADO DEPARTMENT OF TRANSPORTATION
• ENHANCING CONTAMINANT REMOVAL IN STORMWATER DETENTION BASINS BY COAGULATION
• HYDRAULICS OF FLARED END SECTIONS FOR PIPE CULVERTS
• IMPACTS OF 1993 UPPER MISSISSIPPI RIVER BASIN FLOODS ON HIGHWAY SYSTEMS
• JULY 1993 FLOOD DAMAGE TO US-71 BRIDGE OVER BRUSHY CREEK, CARROLL COUNTY, IOWA: CASE STUDY
• MAGNITUDE AND FREQUENCY OF 1993 FLOOD VOLUMES IN UPPER MISSISSIPPI RIVER BASIN
• MAGNITUDE AND FREQUENCY OF PEAK DISCHARGES FOR MISSISSIPPI RIVER BASIN FLOOD OF 1993
• MOBILIZATION OF MAJOR AND TRACE CONSTITUENTS OF HIGHWAY RUNOFF IN GROUNDWATER POTENTIALLY CAUSED BY DEICING CHEMICAL MIGRATION
• NATIONAL EVALUATION OF WATER QUALITY ISSUES FOR HIGHWAY PLANNING
• SCOUR MEASUREMENTS AT BRIDGE SITES DURING 1993 UPPER MISSISSIPPI RIVER BASIN FLOOD
• SELECTION OF FLOOD FREQUENCY ANALYSIS PROCEDURE FOR EVALUATING FLOOD-ESTIMATION MODELS
• WATER LEVEL STATISTICS FOR DESIGN OF TRANSPORTATION FACILITIES IN COASTAL LOUISIANA