The Department is initiating rulemaking to establish Total Maximum Daily Loads (TMDLs) for waters in the following basins: St. Marks, Choctawhatchee Bay, Lower St. Johns River, Ocklawaha, Upper St. Johns, Indian River Lagoon, Peace River, Caloosahatchee River, and Charlotte Harbor. Pursuant to Section 403.067(6), F.S., TMDLs must be adopted by the Secretary of the Department by rule. Chapter 62-304, F.A.C., was established as the rule chapter within which rules adopting TMDLs shall reside. Establishment of TMDLs is proceeding for waters within the above basins for which the verified list of impaired waters were previously adopted by Secretarial Order. TMDL calculations and allocations for each waterbody or waterbody segment will be adopted by rule, by the Secretary of the Department, pursuant to Sections 120.536(1), 120.54, and 403.805, F.S.