A Minnesota trucking company wanted to expand its parking area to accommodate more trucks, but this process required moving an existing storm water pond which was considered a jurisdictional wetland. The company hired Pinnacle Engineering to delineate the wetland areas that were proposed to be impacted; verify these areas with local, state, and federal regulators; evaluate the functions and values of the existing wetland area; prepare a permit application for relocation of the stormwater pond; supervise the construction of the mitigation area; monitor the wetland area to evaluate the progress of native vegetation growth; delineate the mitigation area to assess the amount of created wetlands; evaluate the functions and values of the mitigation area; and secure local, state and federal certifications that the mitigation area adequately mitigated the impacted wetland area.
Pinnacle conducted a wetland delineation of the existing wetland area before construction activities began, using the U.S. Army Corps of Engineers’ 1987 Delineation Manual. Pinnacle also conducted a Minnesota Routine Assessment Method evaluation of the existing wetland to determine the function and values of the existing wetland area. The delineation and evaluation were verified by local, state and federal regulators. Pinnacle then used the information to prepare local, state and federal permit applications to impact the existing wetland area, which included identifying the area to be impacted, locating an on-site mitigation area, describing the methods used to create the mitigation area, and creating a monitoring plan for the mitigation area. Pinnacle then negotiated permit conditions with the regulators to secure permit approval for impacting the existing wetland area.
In order to meet the conditions of the permit, Pinnacle conducted monitoring of the mitigation area for five years. The monitoring included site visits to document the vegetation progress of the mitigation area, a wetland delineation to determine the acreage of the mitigation area, an evaluation of the functions and values of the mitigation area, and recommendations for maintenance of the mitigation area. After five years of monitoring and maintenance, the regulators determined that the mitigation area met all of the permit conditions, and the mitigation was certified as complete.