Desalination Becomes A Reality In Tampa Bay

Florida

Desalination Becomes A Reality In Tampa Bay

Florida

Jim JensenSenior Project ManagerPB Water Area Manager

Parsons Brinckerhoff Quade & Douglas, Inc.

San Diego

NBWA Water Conference April 2, 2004

Jim JensenSenior Project ManagerPB Water Area Manager

Parsons Brinckerhoff Quade & Douglas, Inc.

San Diego

NBWA Water Conference April 2, 2004

InstitutionalInstitutional

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

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

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 PlanMaster 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 sustainableLimited new groundwater ( reduced total groundwater withdrawal)

Drought resistantReasonably priced

Seawater Desalination Procurement ProcessSeawater Desalination Procurement Process

Desalinated water supply 20-35 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 20-35 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 proposedMED, MVC and RO processPower plant intake and discharge canals used

ANCLOTE POWER PLANT

Florida Seawater DesaliantionCompany

Progress Energy/Ionics

BIG BEND POWER PLANT

Enova/SSI2

Florida Water Partners

Stone and Webster

HIGGINS POWER PLANT1

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-LocationPower 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 FacilityTampa Bay Desalination Facility

Desalinated Water QualityDesalinated 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 DisposalSeawater 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 AcceptancePublic 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 StatusPlant 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 StatusPlant 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 BayDesalination 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

Questions?Questions?