Location: Fitchburg, WI
MARS is leading the design of a 243-acre Traditional Neighborhood Development residential and commercial plat in the City of Fitchburg. MARS has led planning based on the City’s SmartCode form-based zoning, street and utility design, and the stormwater management plan. Stormwater management for the plat is particularly challenging due to stringent performance standards stemming from a settlement agreement reached to protect the downstream Waubesa Wetlands State Natural Area and Lake Waubesa. This includes maintaining 90% of the pre-development infiltration volume with no limits on the size of stormwater practices or exemptions for soil type.
MARS developed a stormwater management system combining regional infiltration basins, permeable alleys and widespread street terrace bioretention. Stormwater design entailed extensive WinSLAMM modeling of the regional basins and distributed practices, and analysis of shallow groundwater mounding which imposed a significant constraint stormwater infiltration. The project is in final stages of approval, and construction is anticipated to start in 2018.