Greg Dorolek, Principal Landscape Architect for Wenk Associates, Inc.

Track: Applied

Abstract

The treatment of stormwater for nonpoint source pollutants presents unique challenges for implementation in redeveloping areas of existing urban environments. On-site stormwater facilities can work well, and are widely accepted, in lower density and suburban environments. However in denser urban contexts, the implementation of on-site LID tools result in facilities that function poorly, are often “off limits” for public use, and consume valuable land where higher densities and fully developed sites are desirable goals.

This presentation will discuss the challenges and approaches for two different urban redevelopments located in Milwaukee and Denver. The presentation will explore consolidated, district scale stormwater management facilities that allow for higher development densities, expanded parks and open spaces, and improved performance for water quality treatment and storm water detention.

The first project will describe consolidated stormwater treatment and detention integrated into a large community Park developed as part of a single, (140-acre) light-industrial redevelopment in Milwaukee that was completed in 2007. The presentation will discuss the social, environmental, and economic benefits of this approach.

In contrast, the second project will describe the planning alternatives for a consolidated stormwater system in a rapidly transforming district of central Denver, approximately 100 acres. The neighborhood is characterized by multiple private land ownerships, varied lot sizes, mixed land uses, and a redevelopment timeframe that will last over decades.  The presentation will discuss the urban design goals, unique park opportunities, and the cost benefits of well integrated, consolidated LID approach as compared to a more typical site by site approach.