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SARI System Enhancements Program Feasibility Study The Study is the preliminary evaluation of the feasibility for segregating brine flows from domestic wastewater, for discharge to an ocean outfall. The concept considers installation of a new “brine-only” pipeline through Orange County. Treatment of waters prior to discharge into the brine line or rerouting certain non-brine discharges to traditional domestic wastewater treatment plants in the Upper Santa Ana River area would also be required. The Study is intended to evaluate the benefits of a brine-only pipeline in all three counties such as, reuse of a portion of the flow in the Groundwater Replenishment System being constructed by OCWD and OCSD, making available additional Orange County pipeline and treatment plant capacities and reducing disposal costs for brine-only discharges which meet ocean discharge water quality requirements. The Feasibility Study will incorporate six issue papers addressing outfall options, regulatory issues, upper SARI dischargers additional treatment, brine line alignment and sizing, cost model, and implementation plan. Background The Santa Ana Regional Interceptor (SARI) in its current configuration of over 90 miles of pipeline, transports “brine” and wastewater from Orange, Riverside, and San Bernardino Counties to Orange County Sanitation District’s (OCSD’s) Regional Treatment Plant No. 1, or No. 2. Initial segments of the SARI were constructed in 1975, with the most recent segment (Reach V) completed in 2002. The SARI is an important regional water quality asset because it prevents water containing salts (also termed “brine”) from being discharged into the Santa Ana River, which would then percolate into Orange County’s groundwater basin. The “brine” contained in the SARI, which is significantly less salty than ocean water, comes mostly from desalter plants operated to remove salt from existing groundwater, making the treated water available for use. One example is the Arlington Desalter which removes salt from water extracted from the Arlington Groundwater Basin and delivers the treated water to Orange County Water District (OCWD) for percolation into Orange County’s groundwater basin. In order to reduce the watershed’s reliance on imported State Project and Colorado River water, to remove salts from the groundwater basins, and to ultimately achieve a “salt balance” in the watershed, a number of additional desalters are under construction, or planned for the near future. For further background information on the existing SARI and salt imbalance in the watershed, see the SARI Planning Study and the Water Resources Plan posted to SAWPA’s website at www.sawpa.org/iwp. Documents On March 31, 2004, SAWPA presented an overview at the City of Huntington Beach Town Hall Meeting. Click on the link to view the PDF of the presentation. On February 25, 2004 SAWPA presented and overview to the Friends of Harbors, Beaches, and Parks. Click on the link to view the PDF of the presentation. On February 5, 2004, SAWPA presented an overview to the Huntington Beach Environmental Board. Click on the link to view the PDF of the presentation. On February 3, 2004, SAWPA presented an overview to the Audubon Society. Click on the link to view the PDF of the presentation. On January 7, 2004, SAWPA presented a Status Report to the Orange County Water District Board of Directors. Click on the link to see a PDF of the presentation. Status Report to SAWPA Technical Committee of General Managers, December 9, 2003. On November 19, 2003, SAWPA presented a project Concept Overview to the Orange County Coastkeeper. Click on the link to see the presentation. On November 17, 2003, SAWPA held Public Workshop Number 2. The Presentation for this meeting is included here. On September 25, 2003, SAWPA held Public Workshop Number 1 on this feasibility study. A flyer was produced, and a presentation was given at this meeting. Click below to view these documents.
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