Date of Award


Degree Type


Degree Name

Master of Science in Civil and Environmental Engineering


Civil and Environmental Engineering

First Advisor

Leon Thiem


A winter and a non-winter storm were sampled to compare the natural attenuation of roadway runoff within a channel. Samples were taken at three sampling locations within the channel during a non-winter and winter storm. Analyzed constituents of the samples include: trace metals, nutrients, hardness, halide, suspended solids, organic compounds and physical parameters. Comparisons of inlet constituent loads for each storm showed a significant increase in constituents in the winter storm. Reduction efficiencies throughout the channel length were calculated and the winter storm was found to have had lower removal rates per length of the swale.



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