Stormwater Characterization from Roadways with Open Graded Friction Course Surfaces
Land-intensive best management practices (BMPs), such as bioretention basins and dry detention basins, have been installed by the North Carolina Department of Transportation (NCDOT) in high-value water supply and nutrient sensitive watersheds as part of the agency's statewide National Pollutant Discharge Elimination System (NPDES) permit. These BMPs often require additional and costly right-of-ways (ROW) and would most likely saddle NCDOT with long-term maintenance costs. Recently, NCDOT proposed that asphalt porous friction course (asphalt-PFC) can be a viable BMP option, which could provide multiple cost savings in design, installation, and maintenance. Asphalt-PFC can be easily integrated within the linear environment of the roadway system and acts to prevent pollutants from being generated in storm water. Additionally, asphalt-PFC would also improve motorist safety during storm events. A research team from the University of North Carolina at Charlotte (UNC Charlotte) proposes to initiate a 2.5-year study in order to assist NCDOT to evaluate such a design-related BMP that could be shown to be effective at reducing pollutant loads from roadway runoff. Goals of this proposed project are as follows: (1)To document the types and locations of existing asphalt-PFC in North Carolina and perform literature review of the effectiveness of asphalt-PFC as a viable BMP; (2) To perform a life expectancy analysis and cost comparisons of asphalt-PFC with conventional or concrete highways. Other types of asphalt-rubber and polymer-asphalt open graded fraction course surfaces (Anderson, 1987) may exist in the state and, if so, we will include these types of roadways for evaluation; (3) To conduct a field monitoring study to quantify the pollutant loads (TSS, TN, TP, NO3-N, NH4-N, PO4-P, DOC) from NC asphalt-PFC roadways in comparison to conventional roadway surfaces, and; (4) To assess the potential of integrating asphalt-PFC with roadway ROW vegetation coverage as a sequential treatment train for roadway runoff control.
Language
- English
Project
- Status: Completed
- Funding: $201048.00
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Contract Numbers:
2011-16
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Sponsor Organizations:
North Carolina Department of Transportation
Research and Development
1549 Mail Service Center
Raleigh, NC United States 27699-1549 -
Project Managers:
Kirby, John
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Performing Organizations:
University of North Carolina, Charlotte
Department of Civil and Environmental Engineering
9201 University City Boulevard
Charlotte, NC United States 28223-0001 -
Principal Investigators:
Wu, Jy
- Start Date: 20100816
- Expected Completion Date: 20130215
- Actual Completion Date: 20130215
- Source Data: RiP Project 28939
Subject/Index Terms
- TRT Terms: Best practices; Design; Detention basins; Friction course; Right of way (Land); Runoff; Vegetation control; Watersheds
- Identifier Terms: National Pollutant Discharge Elimination System (NPDES)
- Uncontrolled Terms: Porous friction course
- Geographic Terms: North Carolina
- Subject Areas: Highways; Hydraulics and Hydrology; I15: Environment;
Filing Info
- Accession Number: 01463333
- Record Type: Research project
- Source Agency: North Carolina Department of Transportation
- Contract Numbers: 2011-16
- Files: RIP, STATEDOT
- Created Date: Jan 3 2013 2:21PM