Plan formulation is the process of developing alternative plans that meet the project-specific objectives while avoiding constraints. Plan formulation was conducted with a focus on achieving the federal objective of water and related land resources project planning, which is to contribute to National Economic Development (NED) consistent with protecting the nation's environment, pursuant to national environmental statutes, applicable executive orders, and other federal planning requirements. Plan formulation also considers all effects, beneficial or adverse, to each of the four evaluation accounts identified in the 1983 Economic and Environmental Principles and Guidelines for Water and Related Land Resource Implementation Studies (Principles and Guidelines) which are National Economic Development, Environmental Quality, Regional Economic Development, and Other Social Effects.
It has been determined that there is continued federal interest in a project along the Atlantic Ocean shoreline of Miami-Dade County, Florida, based on the Tentatively Selected Plan (TSP) identified using the U.S. Army Corps of Engineers (USACE) Planning Process.
The Main Segment TSP includes beach nourishment (including dune features) along 5.7 miles of shoreline along with a series of groins between R-28 and R-31.5. Sand sources to be used for beach nourishment in the Main Segment include the BHI Complex, South Beach, and offshore borrow areas. The Key Biscayne TSP includes a reinforced dune with a steel sheet pile wall along 1.2 miles shoreline. Beach nourishment (including dune features) will use sand from upland mines to keep the wall buried, and sheet pile tieback walls will be used at the north and south ends of the project. Implementation of the plan for Key Biscayne is contingent upon local efforts to address back bay flood risks.
The TSP contributes to the creation of beach and dune habitat. It is integrated with the community to allow continued public access to existing recreational opportunities that traditionally occur along the coastline. The TSP was formulated to avoid and minimize impacts to every extent possible; therefore, no mitigation is recommended as part of the project.