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Paul CookIrvine Ranch Water DistrictGeneral Manager
February 21, 2013
Shared Services:
Baker Water Treatment Plant
Background on IRWD
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Water, Wastewater, Water Recycling, Urban Runoff
California Special District governed by a publicly-elected Board
IRWD customer base:• Residential population: 350,000• Daytime population: over 500,000• Service connections: 102,381
IRWD service area:• 181 square miles (20% of Orange County)• All or part of six cities and unincorporated county:
About Irvine Ranch Water District
IrvineTustin
Orange
Lake ForestNewport Beach
Costa Mesa
IRWD services and system statistics:
Potable Water: Three treatment plants, 25 wells, 1,500 miles of pipelines
Wastewater: Nearly 1,000 miles of sewage collection pipelines
Recycled Water: Two water recycling facilities (28 MGD + 5.5 MGD) and approximately 500 miles of recycled water pipelines
Urban Runoff Treatment: The San Joaquin Marsh and 31 built and planned man-made wetland treatment sites
About the Irvine Ranch Water District
IRWD Shared Services
Baker Water Treatment Plant
Project Objectives:
Baker Water Treatment Plant
1. Improve potable water supply reliability for southern Orange County by constructing a local regional water treatment facility.
2. Collaborate with multiple retail water agencies to optimize treatment capacity and conveyance.
3. Design facility to treat raw water from three sources, blended or as individual sources.
4. Utilize modern treatment technology toproduce water that meets standardsstricter than current regulatoryrequirements.
5. Minimize waste by operating plant at greater than 99% recovery efficiency.
Advanced water treatment facility with microfiltration membranes,
UV disinfection, and chloramines for residual disinfection
DiemerPlant
Santiago Lateral
Lower Feeder
Irvine Lake
AMP
BakerPipeline
Baker Plant Site
LakeMathews
SouthCountyPipeline
South OC Regional Imported Water Distribution System
Why this project?• Optimize available capacity in the Baker Pipeline.
(43.5 cfs; 28,200 AFY; 63,300 homes)
Why at IRWD?• Utilize existing storage and conveyance facilities.
• IRWD operates other membrane treatment facilities.
At what cost?
• Total cost estimate: $79 million.
• All-in cost: $898 per acre-foot.
Baker Water Treatment Plant
Agency Flow Rate, cfs (MGD)
Capacity
ETWD 5.0 (3.2) 11.5%IRWD 10.5 (6.8) 24.1%
MNWD 13.0 (8.4) 29.9%SMWD 13.0 (8.4) 29.9%TCWD 2.0 (1.3) 4.6%TOTAL 43.5 (28.1) 100.0%
Multi-agency project with six primary stakeholders
Capacity Ownership Split:
Baker Water Treatment Plant
* MWDOC does not own capacity, but participated in the Feasibility Study and will facilitate the purchases of untreated water from the Metropolitan Water District.
Moulton Niguel Water District
Site Is Part of Overall IRWD Baker Property
Project Site at Construction Completion
16 MG RESERVOIR
16 MG RESERVOIR
PRODUCT WATERPUMP STATION
CT BASIN
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IRWD Contact Information
Paul Cook
IRWD General Manager
Phone: (949) 435-5590
E-mail: [email protected]
www.irwd.com
