The sites proposed in Salem all contain a flood storage component to assist with the persistent flooding problems and to mitigate for lost flood storage due to proposed highway construction. In providing for flood storage, wetland creation/enhancement will provide benefits in terms of wildlife and water quality. For the Selected Alternative, the total amount of wetland impacts (including the Exit 2 Park-and-Ride and sound walls) within Salem is approximately 23 acres. Total mitigation provided by the proposed sites amounts to approximately 90 acres (including creation, preservation, and flood storage replacement elements). Each of the sites are described below.