1) Proposed activities located entirely in uplands less than 40 acres total land area with positive stormwater outfall or less than 320 acres total land area and less than 160 acres of impervious area with no positive stormwater outfall. 2) Petitions for variances for activities over which permitting responsibilities have been delegated pursuant to the delegation agreement for mixing zones, turbidity, and dissolved oxygen associated with permits under Part IV, Chapter 373, F.S. 3) Issuing, waiving or denying state water quality certification for those activities over which permitting responsibility has been delegated under the delegation agreement. 4) Performing the duties and obligations of the District in association with applications requiring review and final agency action by Miami-Dade County under the delegation agreement for providing concurrence with coastal zone consistency determinations and distributing copies of notices of receipt of applications to the U.S. Army Corps of Engineers, the State of Florida Fish and Wildlife Conservation Commission, the State of Florida Department of State, the State of Florida Department of Community Affairs, and other persons who have specifically requested a copy of the application in accordance with Rules 62-343.090 and 40E-1.6058, F.A.C.