1. MSSC 2011 Annual Salinity Summit February 17 – 18, 2011 Thirty Years of Success in Implementing Desalination By Roger K. Noack, P.E. HDR Engineering, Inc.

2. Presentation Overview  History of Desalination in Florida - In the Beginning - Overtime there have been some speed bumps - Where we are today  Summary

3. In the Beginning  Rotunda West Utilities - Placida, Florida - 1971 - Brackish RO Plant - 0.3 MGD Design Capacity - Groundwater source high TDS and chlorides - Surface discharge for the concentrate

4. Permitting  Permit to Construct  Permit to Operate  Local permits – building, clearing, environmental, etc.  Permit to Discharge the Concentrate - Started design before having the permit - Application is a couple of pages - Received approval in a couple of months Minimal public input

5. As the world turns….  More desal plants constructed  More information becomes available  More public involvement  More headaches  More engineering work

6. As the World turns….  Mid 1980’s  Most sources are groundwater  Discharge to ocean  Major-Seawater Ion Toxicity – Toxicity resulting solely as a result of a surplus or deficit of one or more of the major seawater ions or from the relative proportions of those ions.

7. As the World turns….  Tampa Bay Desalination Plant - 1996 - West Coast Regional Water Supply Authority ordered to reduce groundwater use 23% by 2003 - In October 1996, West Coast Regional Water Supply Authority issued RFP for commercial developer to design, build, operate, and own a desalination plant. - March 3 2010 plant finally hits goal of 25 MGD for 4 months and 20 MGD for 12 months

8. Where are we today  Over 140 desalination plants  Capacity totaling over 500 MGD  Ranging from 0.01 to 25 MGD  Source - Ocean – A couple - Surface – 1 plant - Groundwater – Overwhelming majority

9. Concentrate Disposal in Florida

10. Permitting Today  Permit to Construct  Permit to Operate  Local permits – building, clearing, etc.  Permit to Discharge Demineralization Concentrate  Recommend getting Discharge Permit before proceeding with design

11. Permit to Discharge Demineralization Concentrate  10 pages of instructions  20 page form  Discharge determines information required - Surface - Underground injection - Land application - Blending with reclaim water - Blending at wastewater facility  All information available to public

12. Summary  Florida has led the way in desalination  The path has not been easy  First DBOO – industry learned a lot from this experience  More open process today than in the past  Can get a permit for construction, operation and discharge, but it will take some time – 1 to 2 years

13. MSSC 2011 Annual Salinity Summit February 17 – 18, 2011 QUESTIONS COMMENTS Contact: roger.noack@hdrinc.com 813-282-5371