HYDROLOGY
Fate and Transport of Copper and Zinc in Storm Water, EcoTox
and Port of Seattle (2002-2003)
Taylor Associates, Inc. staff completed the reconnaissance, installation, maintenance, and operation for 16 sampling stations to collect flow data and storm water samples for three storm events. Over 1000 discrete samples were collected with automated samplers, then handled and processed in preparation for chemical analysis of a selected subset of samples based on hydrograph data. The project investigated the fate and transport of zinc and copper in a storm water drainage system comprising closed conduits, open channels, and forested wetlands. Taylor Associates, Inc. determined water budgets for sampled storm events to support pollutant mass balance analyses. The water budget involved differentiating baseflows and storm flows from station hydrographs. Accurate flow data was validated through extensive quality control and flow measurement verification using field measurements (of velocity profiles) and secondary calculations (with Manning’s equation).
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