GM2 provided environmental permitting support for proposed drainage improvements to a retaining wall at Manchester-Boston Regional Airport. GM2’s tasks included wetland delineation, coordination with NHDES and the NH Fish and Game Department, and supporting the preparation of a NHDES Alteration of Terrain permit application. In evaluating the project’s impact, GM2 identified that the proposed work was exempt from NHDES wetlands permitting requirements and coordinated with the NHDES Wetlands Bureau to confirm and document this permit exemption.