Wrenn Tree Permittee-Responsible Mitigation
Project TypeNon-Bank Project
LocationSouth Carolina | Lancaster County
Service AreaLower Catawba (03050103)
Project SizeStreams: 7,653 LF
SolutionEnvironmental Mitigation, Stream Mitigation, Wetland Mitigation
- Riparian wetland
Ecological SettingStreams, Wetlands
Michael Clark, PED: 303.653.8428
RES developed a Permittee-Responsible Mitigation or PRM for Gallo Wineries in anticipation of the expansion of their manufacturing facility.
After identifying the 501-acre site, RES is currently restoring approximately 8,000 linear feet of stream through the design and construction of a stable meandering channel with the appropriate width/depth ratio and stable banks. Additionally, approximately 10,598 linear feet of the stream will be enhanced through invasive control, planting native riparian communities, and some bioengineered and Rosgen stream stabilization techniques. Native fish and other aquatic habitats and populations will improve the installation of features such as brush toes, constructed riffles, log and rock sills, and pools of varying depths. Overall, water quality will improve within restored and enhanced streams by reducing sediment load caused by erosion through channel stabilization.
The RES team will work to remove an existing dam and associated impoundment and restore historical stream reach and hydrology and the riparian buffer that was present initially while restoring natural flow and fish passage from the headwaters to the Catawba River.
Approximately 3 acres of onsite wetlands and buffers will be enhanced, with an additional 2.81 acres of wetlands restored adjacent to restored stream channels within the on-site pond footprint. Of these 2.81 acres, 2.77 acres will generate wetland restoration credit, with the remaining 0.04 areas left to potentially remain as ponded areas that are likely to revegetate naturally.
Overall, a permanent conservation easement in perpetuity will be established on this 501.33-acre site. Approximately 32 acres will be donated to the Catawba Indian Nation, with the remainder of the property to be donated to South Carolina Parks and Recreation and Tourism, expanding adjacent Landsford Canal State Park, with 239 acres within the mitigation project.