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

Orange County Groundwater Basin

Sources of water for the basin

OCWD operational facilities

Stormwater capture at Prado Dam

Recharge facilities

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

Recharge Basins

Managing Santa Ana River water

Groundwater Replenishment System (GWRS)

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

Benefits of GWRS

• 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

Working with us

https://www.ocwd.com/working-with-us/rfp-contracts

Search opportunities

https://www.ocwdplanroom.com/

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)

Talbert Barrier

Construction Contract to be advertised August 2018 Estimated $4M

Smith Basin • Design RFP out Jan. 2018 • Posted on our web site • Estimated $300k effort

• 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 colsen@ocwd.com

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

1939 Colorado River Aqueduct

1960s California State Water Project

Orange County’s imported water

Lake Orville

CA Water Fix