Business Development
Association of Orange County
Nov. 16, 2017
Chris Olsen, PE
Director of Engineering Orange County Water District
Orange County Water District
o Manage &
replenish OC Groundwater Basin
o Protect OC water
rights to Santa Ana River
OCWD general information
• OCWD is governed by a 10-person Board of Directors
• Non-adjudicated groundwater basin • Each year, the Board sets the percentage of
groundwater that can be pumped (BPP) • Each year, the Board approves the Replenishment
Assessment (RA) and Basin Equity Assessment (BEA) for the cost of pumping groundwater
Inflatable Rubber Dam (320’ long, 7’ diameter)
Bypass Tubes (max capacity, 500 cfs)
Trash Racks
Diversion Tubes (max capacity, 500 cfs) Flow continues on
to deep basins
Bypassed Flow
Diverted Flow
Flow continues down SAR SAR
Weir Pond #1
Headgates Operation
GWRS Final Expansion (GWRSFE)
• Will increase the capacity of the GWRS from 100 MGD to 130 MGD • Provides 134,000 acre-feet per year of supply to the
groundwater basin—enough water for over 1 million people
• CEQA and Engineers report was approved by the Board in September 2016
• Will apply for grant funding through Proposition 1 and State Revolving Fund (SRF) loans
• Design has started, construction to bid within 1.5 years and project completion will be in 2023
GWRS Final Expansion (GWRSFE) projects
• Budget $253 million
• OCSD Plant No. 2 (P2) effluent pump
station
• OCSD Plant No. 2 headworks modification
Microfiltration West Building Expansion
(1.5 new trains)
Six New RO Units Three New UV Trains
New Product Water and BW Supply Pumps
New Decarbonator and Cartridge Filter
GWRSFE Advanced Water Treatment Facility expansion
GWRSFE Overview
Current GWRS operations – All secondary effluent
from Plant No. 1
GWRSFE operations – Additional secondary
effluent required from Plant No. 2
19
OCSD Plant No. 2
OCSD Plant No. 1
OCWD GWRS Facility GWRS Final Expansion overview
Recharge of GWRSFE product water
Total GWRS Final Expansion capacity - 130 MGD
Recharge Facility Recharge
Capacity Talbert Seawater Barrier 15 MGD
Mid-Basin Injection 8 MGD
Burris Basin Outlet 7 MGD
Recharge Basins (with Burris Outlet) 100 MGD
TOTAL 130 MGD
MBI & Centennial
Park 8 MGD
Burris Basin Outlet 7 MGD
GWRS Final
Expansion 130 MGD
Talbert Seawater
Barrier 15 MGD
Recharge Basins
100 MGD
• Proactive outreach • No active opposition • 200+ tours of GWRS each year
World-wide support for water reuse
• Expand GWRS
• Increase stormwater storage behind Prado Dam
• Water efficiency and conservation measures
• Explore MET indirect potable reuse project
• Explore ocean water desalination.
OCWD efforts to secure new water supplies
Upcoming opportunities
• Upcoming Projects (construction and design)
• Talbert Barrier Pipeline Replacement – Estimated Construction Cost: $4M
• Smith Basin Rehabilitation
– Estimated Construction Cost: $4.5M (design $300k)
• 48-inch Valve/Actuator at Anaheim Lake – Design $150k
• Upper and Lower Five Coves Rehabilitation Project
– Estimated Construction Cost: $2.5M (CM $250k)
• RFP for design out in Jan. ‘18
48-inch Valve/Actuator
Design RFP out in Jan. ‘18 Posted on our web site Estimated $150k effort
• Construction bid spring 2018
• CM services
• Estimated $2.5M project
Upper and Lower Five Coves Basins Rehabilitation Project Site Plan
Off River Flow Control Gates and Flow Measurement Structure
Lower Five Coves Flow Control Gate and Inlet
Upper Five Coves Drain Tube and Flow Control Gate
Upper Five Coves to Lower Five Coves Transfer Structure
SAR to Upper Five Coves Intertie Flow Control Gates
Lower Five Coves Basin
Lincoln Basin
Off River
Upper Five Coves Basin
Burris Basin
Santa Ana River
Lincoln Avenue
N
Upper and Lower Five Coves
Questions?
Chris Olsen Director of Engineering
378-3232 [email protected]
18700 Ward Street Fountain Valley, California, 92708 USA
@OCWDWaterNews Facebook.com/OCWaterDistrict
@OCWD
Melded unit cost for GWRS
*This unit cost does not include the MWD LRP subsidy for GWRS – which expires in 2019
Current GWRS
100 MGD $577/AF*
Future GWRS 130 MGD $668/AF
GWRSFE 30 MGD $968/AF