Evaluation and implementation of BMPs for NCDOT’s highway and industrial facilities : final report, May 2006.
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2006-05-01
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Edition:Final report; 7/1/02-3/30/06.
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Abstract:This research has provided NCDOT with (1) scientific observations to validate the pollutant removal
performance of selected structural BMPs, (2) a database management option for BMP monitoring and
non-monitoring sites, (3) pollution prevention plans for vehicular maintenance facilities, and (4)
treatment options for borrow pit wastewaters. An intensive monitoring program was conducted to
characterize and examine the pollutant removal performance of three highway BMP types (grass filter
strip, filtration swale, and grassed shoulder). A Stormwater Data Management System was developed
for storage and retrieval of BMP site characterization data that are obtained during BMP site
inspection. Suggestions were provided to the development of pollution prevention plans for vehicular
maintenance facilities. Treatment technologies for borrow pit wastewater have been presented
including the development of pump capacity curves for proper sizing and operation of stilling basins,
a spreadsheet calculator for performing cost analysis for the polymer injection treatment system, and
chemical/physical treatment alternatives.
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