Abstract
Stormwater is a leading pollutant, which may be mitigated by stormwater control measures (SCMs) in urban, suburban and rural areas. While there have been many studies demonstrating the positive performance of SCMs, these measures are designed as individual components to meet regulatory requirements. When placed in series, SCMs can possibly prevent failure due to poor design, construction and maintenance by adding redundancy to the system. Stormwater manuals suggest placing SCMs in series, but there has been minimal research on how to accurately account for the benefits. The present research describes the design concept, construction and early-stage evaluation of a SCM treatment train that consists of a vegetated swale, bioinfiltration rain gardens and an infiltration trench. A SCM treatment train was designed to answer several questions, including quantifying the quality and quantity impact of SCMs in series, the maintenance requirements, if there is a minimum expected level for water quality, and the design recommendations.
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