March 2019 Industry Insight Presentation

  • 20 Mar 2019
  • 11:30 AM - 1:00 PM (PDT)
  • Dave & Buster's – Irvine Spectrum • 661 Irvine Spectrum, Irvine CA


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March 20, 2019 Industry Insight Presentation 

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GWRS Final Expansion Project Update

Sandy Scott-Roberts, P.E.
GWRS Program Manager,
Orange County Water District


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About Our Presentation

The $292 million Groundwater Replenishment System (GWRS) Final Expansion Project will bring the Orange County Water District's Advanced Water Purification Facility to it's build-out treatment capacity of 130 million gallons per day.

To complete this final expansion, the treatment capacities of the microfiltration system, the reverse osmosis system, and the ultraviolet light systems will need to be increased to treat secondary effluent from Orange County Sanitation District (OCSD). In addition, a new pump station, flow equalization tanks, and a pipeline will need to be constructed at OCSD’s Plant No. 2 in Huntington Beach.

The secondary effluent from OCSD's Plant No. 2 brings a new water quality to the GWRS facility and with it some design challenges for water recycling. Also, as part of the GWRS Final Expansion Project, non-reclaimable wastewater flows from the upper watershed will be separated at OCSD's Plant No. 2 headworks in order to not recycle these flows through GWRS.

The GWRS Final Expansion Project design is currently complete with the start of construction planned for the end of this year.

In addition to the update on the GWRSFE project, Sandy will provide a brief status update on another potential source water for Orange County, the Huntington Beach Desalination Plant.

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About Our Speaker

Sandy Scott-Roberts, P.E.
GWRS Program Manager
Orange County Water District

Sandy Scott-Roberts, P.E. is the GWRS Program Manager at the Orange County Water District. She holds a Bachelor’s and Master’s degree in Environmental and Civil Engineering from California Polytechnic State University, San Luis Obispo. She has 17 years of experience in project management of the planning, feasibility, design and construction phases of water treatment facilities, including pipelines, pump stations, recharge basins, and injection wells. She started her career as a consulting civil engineer and has been at the Orange County Water District since 2006. She is the Project Manager for the Groundwater Replenishment System (GWRS) Final Expansion Project which will increase the treatment capacity of the facility from 100 MGD to 130 MGD.

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