The sites proposed in Londonderry provide wetland creation adjacent to Beaver Brook and preservation of wetland and upland habitat adjacent to other conservation lands. The selected sites were determined with input from the Town and in recognition of the direct impacts in Londonderry. For the Selected Alternative, the total amount of wetland impacts (including the Exit 5 Park-and-Ride and sound walls) in Londonderry is approximately 26 acres. The total mitigation provided by the sites would amount to nearly 290 acres. The sites have also been identified as potential locations for passive recreational use by townspeople.