Desalination Becomes A Reality In Tampa Bay Florida Jim Jensen Senior Project Manager PB Water Area Manager Parsons Brinckerhoff Quade & Douglas, Inc. San Diego NBWA Water Conference April 2, 2004 Jim Jensen Senior Project Manager PB Water Area Manager Parsons Brinckerhoff Quade & Douglas, Inc. San Diego NBWA Water Conference April 2, 2004

Institutional  Tampa Bay Water regional water wholesaler  Owns all significant wellfields  Regional distribution system  New surface WTP  Member governments  Hillsborough, Pasco & Pinellas counties  New Port Richey, St. Petersburg & Tampa  Operate their own WTPs  Retail water distribution systems  Tampa Bay Water regional water wholesaler  Owns all significant wellfields  Regional distribution system  New surface WTP  Member governments  Hillsborough, Pasco & Pinellas counties  New Port Richey, St. Petersburg & Tampa  Operate their own WTPs  Retail water distribution systems

Why Desalination Is Needed In Southwest Florida  Years of drought  Overpumping from concentrated wellfields  Environmental stress to wetlands and lakes  Years of drought  Overpumping from concentrated wellfields  Environmental stress to wetlands and lakes

SWFWMD Required Reduction In Wellfield Withdrawals  Average of 158 MGD pumped in 1998  Settlement required reduction in pumping to 121 MGD in 2003  Further reduction in pumping to 90 MGD by 2008  Average of 158 MGD pumped in 1998  Settlement required reduction in pumping to 121 MGD in 2003  Further reduction in pumping to 90 MGD by 2008

Master Water Plan  $610 million capital improvement plan  Aggressive water conservation program  Skimmed surface water stored in above ground reservoir  Desalinated seawater  Desalinated brackish water  Limited new groundwater sources  $610 million capital improvement plan  Aggressive water conservation program  Skimmed surface water stored in above ground reservoir  Desalinated seawater  Desalinated brackish water  Limited new groundwater sources

Water Master Plan Requirements  Diversified and sustainable  Limited new groundwater ( reduced total groundwater withdrawal)  Drought resistant  Reasonably priced  Diversified and sustainable  Limited new groundwater ( reduced total groundwater withdrawal)  Drought resistant  Reasonably priced

Seawater Desalination Procurement Process  Desalinated water supply MGD  Board initially not fully committed  Tampa Bay Water did not own a site  Developer responsible for water delivery system to point of connection  Design, Build, Own, Operate, Transfer  Co-funded capital costs by SWFWMD  Desalinated water supply MGD  Board initially not fully committed  Tampa Bay Water did not own a site  Developer responsible for water delivery system to point of connection  Design, Build, Own, Operate, Transfer  Co-funded capital costs by SWFWMD

PROPOSALS  All 5 Pre-Qualified Developers Submitted  Approximately 23 options and alternatives submitted  Three sites proposed  MED, MVC and RO process  Power plant intake and discharge canals used  All 5 Pre-Qualified Developers Submitted  Approximately 23 options and alternatives submitted  Three sites proposed  MED, MVC and RO process  Power plant intake and discharge canals used

ANCLOTE POWER PLANT Florida Seawater Desaliantion Company Progress Energy/Ionics BIG BEND POWER PLANT Enova/SSI 2 Florida Water Partners Stone and Webster HIGGINS POWER PLANT 1 Progress Energy Ionics 1 Higgins Power Plant was eliminated from further consideration. 2 Enova/SSI was not selected for further evaluation. Proposed Desalination Site Locations

Power Plant Co-Location  Shares intake and outfall with power plant once through cooling water system  Tie in to power plant discharge pipeline on land  Increase in temperature increases production of desalinated water  Bay water salinity less than open seawater  Shares intake and outfall with power plant once through cooling water system  Tie in to power plant discharge pipeline on land  Increase in temperature increases production of desalinated water  Bay water salinity less than open seawater

Tampa Bay Desalination Facility

Desalinated Water Quality  Meets all local, State and Federal drinking water standards  Chloride maximum 100 mg/L (partial second pass)  Lime added to prevent corrosion  Disinfectant added to prevent biological growth in delivery pipeline  Meets all local, State and Federal drinking water standards  Chloride maximum 100 mg/L (partial second pass)  Lime added to prevent corrosion  Disinfectant added to prevent biological growth in delivery pipeline

Seawater Concentrate Disposal  16.7 MGD concentrate mixed with 1,350 MGD cooling water flow = 70:1  Blended discharge increase ~2% at canal discharge point  NPDES Permit minimum blending ratio 20:1 (1 of 4 generators operating)  16.7 MGD concentrate mixed with 1,350 MGD cooling water flow = 70:1  Blended discharge increase ~2% at canal discharge point  NPDES Permit minimum blending ratio 20:1 (1 of 4 generators operating)

Public Acceptance  Extensive public information and education program from proposal process through construction  Public Service Announcements  Editorial Board Presentations  Open House presentations/ Q&A  Focus Groups  Homeowner’s Associations, etc.  70% Favorable for desalination  Concern about environmental impact  NIMBY  Extensive public information and education program from proposal process through construction  Public Service Announcements  Editorial Board Presentations  Open House presentations/ Q&A  Focus Groups  Homeowner’s Associations, etc.  70% Favorable for desalination  Concern about environmental impact  NIMBY

Plant Operational Status  Began water production in March 2003  Excessive fouling problems  Did not pass Acceptance Tests  Operational and other changes reduce fouling, operational costs still to high  Production averages 22.5 MGD in February 2004 before shutdown for repairs  Began water production in March 2003  Excessive fouling problems  Did not pass Acceptance Tests  Operational and other changes reduce fouling, operational costs still to high  Production averages 22.5 MGD in February 2004 before shutdown for repairs

Plant Institutional Status  Covanta notified of termination of O&M contract in October 2003  Covanta files for bankruptcy delaying repairs and termination  Board nominates Interim Operations, Maintenance and Management firms  American Water Services/Pridesa  Ionics/Montgomery Watson Harza  Veolia Water (USFilter Operating Services)  Covanta notified of termination of O&M contract in October 2003  Covanta files for bankruptcy delaying repairs and termination  Board nominates Interim Operations, Maintenance and Management firms  American Water Services/Pridesa  Ionics/Montgomery Watson Harza  Veolia Water (USFilter Operating Services)

Desalination Is A Reality In Tampa Bay  Pretreatment problems resulting in excessive fouling can be fixed  The Tampa facility meets all drinking water standards  The Tampa facility is capable of producing 25 MGD of potable water  Pretreatment problems resulting in excessive fouling can be fixed  The Tampa facility meets all drinking water standards  The Tampa facility is capable of producing 25 MGD of potable water

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