Specifications include, but are not limited to: 1. Special conditions to the permit apply only if the presence of the federally endangered Least Tern (Sterna antillarum athalassos) is detected. Information on the Interior Least Tern and its habitat can be found at: https://www.fws.gov/midwest/Endangered/birds/leasttern/index.html. 2. Allow no dredges or related human activity within 1,000 feet of the shoreline of the sandbar providing habitat for the nesting interior least tern during the months of May through August. If this sandbar is over one mile long, this restriction should be applied to the shoreline 1/2 mile up-stream and 1/2 mile downstream from the colony site. 3. Allow no dredging at any time of the year within 200 feet of the navigation pool level shoreline of the sandbar on which the terns are nesting. 4. Instruct dredge crews that under no circumstances are they permitted on the nesting island from May 1 through August 31. 5. If, in the process of conducting work, the dredge crew or company officials discover an interior least tern colony on another island in the vicinity covered by this permit, the above restrictions should apply to that island as well.