Project Name: Evapotranspiration Demonstration Wetland
Summary: Designed & constructed stormwater best management practice
Client: Pennsylvania Department of Environmental Protection
Project Location: Strasburg, PA
Project Size: 0.4 acre Detention Basin
- Green Stormwater Management
- Habitat Improvement & Restoration
- Wetland Hydrology
Project Timeframe: 2013 - Present
Relationship with Client: Since 1997
Given the pending Federal Municipal Separate Storm Sewer System (MS4) Phase II regulations and mandates regarding water quality, the State of Pennsylvania Department of Environmental Protection (DEP) was looking for new best management practices (BMPs) to address the requirements for detaining stormwater, promoting the restoration of the hydrologic cycle, and improving water quality. The state of Pennsylvania was looking for a new stormwater BMP that would provide much needed water quality protection and affective reduction of peak stormwater flow in poorly drained soils.
This project was funded by a Growing Greener Grant from the Pennsylvania Department of Environmental Protection. Kleinschmidt prepared the grant and coordinated the donated resources and services required to meet the matching funds to complete the project. Kleinschmidt donated the engineering design and permitting services, as well as provided the volunteers for planting the site. The design modified an existing stormwater detention basin to optimize water retention and diversify the topography to provide environmental diversity for both wetland and riparian habitat establishment. The diverse plantings naturally uptake nutrients and pollutants from the water and sediment, effectively locking the contaminants up in the wetland plants, enhances base flow water levels, and promotes a more balanced water release to the watershed.
Kleinschmidt will work with the Pennsylvania DEP to establish this technology as a BMP for stormwater detention basins with poor soil infiltration characteristics. This BMP will ultimately improve water quality, stormwater base flow, and plant and wildlife habitat within urban settings.