||An Environmental Assessment (EA) was completed in August 2012 for a proposal to improve off-road vehicle (ORV) trail heads and construct turn lanes in Big Cypress National Preserve. The EA examined three alternatives in detail, addressed the environmental impacts of each, and identified a preferred alternative. The FONSI documents the NPS selected alternative (preferred alternative) and explains why the selected alternative will have no significant effects on the human environment. It is based on the EA and the comments received from the public and agencies during the public review period, which concluded July 5, 2012. The FONSI summarizes the public comments, lists the responses to those comments, and identifies the changes to the text as a result of the comments.