CANCELED: Brown Bag: Advanced Drainage Systems
As the nature of regulations for water quality and quantity evolve and advance, best management practices (BMP’s) continue to be adopted without appropriate regard for the native soils. The majority of low impact design (LID) practices are implemented to use natural vegetation such as bio-swales and rain gardens to both enhance the landscaping of a site and also provide on-site runoff reduction. While these BMP’s can potentially work well on sites with in situ free draining soils, there are significant limitations to these practices in regards to maintenance, areas where rock is close to the surface, or sites that contain native soils not conducive to infiltration.
The incorporation of structural underground detention systems (and other BMP’s) into bio-retention practices provides engineers an effective way to counteract poor infiltrating native soils while also significantly reducing the amount of sediment, nitrogen, and phosphorous (TMDL’s) that leaves a developed site. Not only can this blend be beneficial from both a water quality standpoint and achieving the desired infiltration, but it also provides an optional avenue for more effective maintenance of these systems post-installation.
Speaker: K. Aaron Ganson is a Regional Engineer with Advanced Drainage Systems, and through a unique path is familiar with various Water Quality regulations in different regions of the US. He is experienced in the design of underground storm water retention/detention systems as well as other Water Quality BMP devices. He also has years of practical in-field experience in the installation of storm water BMP’s in Maryland, Virginia, West Virginia, Delaware, North Carolina, South Carolina, and Minnesota. Aaron has a BS in Civil Engineering from Bradley University, and enjoys presenting the experiences and knowledge acquired from both his design and in-field experience.