Validating Pollutant Load Estimates from Highways and Roads
Rain and snowmelt that runs off of roadways carries pollutants. Pollutant event mean concentrations have been developed for various land uses to calculate annual pollutant loads. These were developed for total suspended solids, total phosphorus, and total nitrogen. New Hampshire Department of Transportation (NHDOT) uses the Simple Method for estimating the pollutant load in runoff. This study collected real time in situ measurements to validate the concentrations used in Simple Method calculations for modeling pollutant loads from New Hampshire roadways. Three locations were picked to represent low, medium, and high traffic volume roadways. The actual measured amount of pollutants was compared to the loading predictions of the Simple Method. This study confirmed that using one modeling approach is effective for all New Hampshire roadways.
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Corporate Authors:
University of New Hampshire, Durham
Department of Civil Engineering
Durham, NH United States 03824New Hampshire Department of Transportation
Bureau of Materials and Research
Box 483, 5 Hazen Drive
Concord, NH United States 03302-0483Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Ballestero, Thomas P
- Houle, James
- Puls, Timothy
- Publication Date: 2015-12-31
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Figures; References; Tables;
- Pagination: 27p
Subject/Index Terms
- TRT Terms: Estimating; Highways; Nitrogen; Phosphorus; Pollutants; Runoff; Suspended sediments; Validation; Water quality
- Geographic Terms: New Hampshire
- Subject Areas: Environment; Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 01596810
- Record Type: Publication
- Report/Paper Numbers: FHWA-NH-RD-15680Y
- Contract Numbers: 15680Y, A003(707)
- Files: TRIS, ATRI, USDOT, STATEDOT
- Created Date: Apr 22 2016 10:45AM