Pollutant Load Reductions for Total Maximum Daily Loads for Highways (2013) / Chapter Skim
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Pages 36-42
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36 Background Based on the results of the literature review as discussed in the previous chapter, a BMP matrix/toolbox was developed to provide state DOTs with easy access to TMDL-related BMP performance and cost data. The matrix/toolbox is presented in Tables 20–23.
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37 Common Structural BMPs Used by DOTs Life-Cycle Cost Sources TSS TN TP Fecal Coliform Total Zn Total Cu Total Pb Performance Source(s) Infiltration Basina [1]
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38 BMP Type Definition Source Infiltration Basin An infiltration basin is a depression used to detain stormwater for short periods until it percolates to the groundwater table. It functions as a BMP through filtration of runoff and adsorption of pollutants using site vegetation and soils.
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39 BMP Type Definition Source Vegetated buffer strip Vegetated buffer strips differ from vegetated swales (see below) in that runoff occurs as sheet flow rather than being conveyed as concentrated flow in a channel.
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40 BMP Type Median (95% Conf. Interval)
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41 BMP/Study TSS Nutrients (phosphorus, nitrogen) Metals (copper, lead, zinc)
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42 1From EPA (2009)
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