1. Flatford Swamp Hydrologic Restoration Feasibility Study (H089)

4. How much excess water? How to remove it from the swamp? What to do with it once the flow is removed?

8. To Mosaic To Manatee County

9. To Mosaic

10. Supply Timing and Delivery Storage Options Water Quality and Treatment Options

11. Site B Site A Flatford Swamp

12. Simplified Reservoir Routing Model Daily Inflows, Rainfall and PET o Provided by Interflow, LLC, 2011 o Existing Landuse Conditions o Used Extended Period of Record (16 years) Model Currently Includes All Parameters Except Seepage o May Include It Later with Refined Siting Information Outputs are Daily, Monthly and Annual

14. Variability of Inflows and Delivery Limits Water Quality and Treatment Requirements Storage Type and Design Criteria Operational Considerations

15. Alternative 1: No Storage Alternative 2: Excavated Storage Alternative 3: Elevated Storage All Accomplish Flatford Swamp Diversion Objectives per MRWI Conceptual Plan All Evaluations Use 20 cfs Limit on Flows Delivered to Mosaic

20. Water Quality and Treatment

21. Surface Water Sources Coker Creek Ogleby Creek Maple Creek Myakka River

22. Period of Record (1990s to 2011) Recent SWFWMD Data (2009 to 2011) Samples collected quarterly Seasonal Variability Evaluation (2008, FDEP Data) Tributaries to Myakka River Samples collected monthly

25. Myakka River Has Better Overall Water Quality Than Tributaries 2008 FDEP Water Quality Data Sulfates, conductivity readings– higher in dry season TOC concentration – lower in dry season May Develop Water Quality Indicator Based on USGS Conductivity Values Treatment Technology Exists to Accommodate Seasonal Water Quality Variability

26. Phosphate Beneficiation Process is Affected by Elevated Levels of Calcium and Magnesium

27. Alternative Refinements and Costs Regulatory Review Final Report Due December 2012