Perennial’s experience with wetland delineations ranges from small developments to large transportation and utility projects. Delineations are performed through an evaluation of vegetation, soils and hydrology according to the methodology prescribed by the U.S. Army Corps of Engineers (USACE) and/or state environmental agencies.  Through the use of GPS units, we collect data along wetland boundaries during field surveys allowing us to efficiently produce accurate mapping and impact calculations.

When project site and activities result in unavoidable loss of wetland habitat, Perennial manages:

• Development of wetland mitigation plans and conceptual project designs as well as construction, re-vegetation, and monitoring plans;
• Construction and remediation of herbaceous freshwater wetland systems and estuarine marsh restoration, including the transplanting of wetland vegetation; and
• Post-construction wetland monitoring, including the qualitative and quantitative assessment of re-vegetation success and diversity.