Ecology - Wetlands

Wetland Delineations

ERC’s staff has experience with wetland delineations ranging from small single development lots to 9,000-acre project sites. Delineations are performed through an evaluation of vegetation, soils and water according to the methodology prescribed in the Army Corps of Engineers (ACOE) 1987 Wetland Delineation Manual as well as Colorado Department of Transportation and the Federal Highways Administration standards. ERC conducts wetland functions and values assessments and prepares wetland inventory reports. ERC uses backpack GPS units to map delineated boundaries during the field delineation program allowing us to produce wetland maps saving the client time and money.

Clean Water Act- Section 404 Permitting

In the event that a proposed project will impact jurisdictional wetlands or Waters of the U.S., ERC provides complete professional consultation all aspects of the ACOE 404 permit process. Our expertise in the wetland sciences, knowledge of 404 requirements and working relationships with the ACOE Denver and Southern Colorado Regulatory Offices, as well as Frisco, Western and Durango Regulatory Offices facilitates efficient permit preparation, coordination and receipt of authorization.

Wetland Mitigation

When project requirements result in unavoidable loss of wetland habitat, ERC designs, oversees construction and monitors wetland mitigation for our clients. Mitigation sites are selected based on ecological setting, water supply and the client’s land constraints. Grading and planting plans are generated based on the selected wetland regime. ERC offers construction observation services to ensure critical design conditions are met and monitors the wetlands as required to obtain ACOE acceptance of the successful mitigation project.