Security Zones; Tampa Bay: Big Bend, Boca Grande, Crystal River, East Bay, Hillsborough Bay, MacDill Air Force Base, Manbirtee Key, Old Port Tampa, Port Manatee, Port Tampa, Port St. Petersburg, Port Sutton, Rattlesnake, and Weedon Island, FL

The Coast Guard is disestablishing a security zone in old Tampa Bay, including on land portions of Chemical Formulators Chlorine Facility. The security zone is no longer needed since Chemical Formulators facility is no longer operating. This action will remove existing regulations that restrict vessel movement through the area.