Rich Haller, P.E. Program Manager, Santa Ana Watershed Project Authority (SAWPA) April 2, 2004 Brine Disposal Strategies in Inland Southern California (Santa Ana River Watershed)

Outline Santa Ana Watershed Santa Ana Watershed Santa Ana Watershed Project Authority (SAWPA) Santa Ana Watershed Project Authority (SAWPA) Integrated Watershed Plan Integrated Watershed Plan –Desalters, Brine Disposal (Santa Ana Regional Interceptor) SARI System Enhancements Program SARI System Enhancements Program

The Santa Ana River Watershed Over 2,650 Square Miles Over 2,650 Square Miles Over 5 Million Residents Over 5 Million Residents Portions of 4 Counties Portions of 4 Counties –Orange County –Riverside County –San Bernardino County –Los Angeles County

Pacific Ocean Orange County San Gabriel Mtns. Los Angeles San Bernardino Mtns. San Jacinto Mtns. Lake Elsinore/ San Jacinto Watershed Santa Ana Mtns. The Santa Ana River Watershed Chino Basin

“T” Levees

Population Trends in the Santa Ana Watershed Additional 2.1 million people Additional 2.1 million people Additional 4.6 million people Additional 4.6 million people Source: Center for Demographic Research California State University, Fullerton

What is SAWPA? SAWPA Member Agencies & Other Stakeholders 97 Water-related Agencies 97 Water-related Agencies 4 Counties 4 Counties 59 Cities 59 Cities State water, environmental, and regulatory agencies State water, environmental, and regulatory agencies Federal agencies Federal agencies Other Special Districts Other Special Districts Special Interest Groups Special Interest Groups Over 5 million residents Over 5 million residents Other Stakeholders

Integrated Watershed Plan Water Resources A collaboration of all watershed stakeholders to plan: Brine Line (SARI) Use Wetlands & Environment

Santa Ana Regional Interceptor (SARI) Pipeline OCWD WMWD EMWD SBVMWD IEUA San Bernardino Chino Ontario Corona Riverside Huntington Beach Temecula San Bernardino County Riverside County Los Angeles County Orange County Santa Ana River WatershedBoundary OCSD Plant No. 1 OCSD Plant No. 2 SARI

Separate and Treat Domestic and Commercial Wastewaters Desalters WW Treatment Plants Chino Desalter 1 Chino Desalter II 2 West Riverside Regional Plant RIX Temescal Desalter Arlington Desalter Menifee Desalter Tustin Desalter II Irvine Desalter 2 Tustin Anion Exchange OCSD Plant No. 1 OCSD Plant No. 2 Reserve Upper SARI Capacity for ”Brine-Only” Discharges SARI System Enhancements Concept Perris Desalter 2 1 Future Expansion 1 Future Expansion 2 Future 2 Future Construct New Brine Line in OC Construct New Brine Line in OCUpperSARI LowerSARI

Conceptual Separation of Brine and Wastewater Desalter Brine ProcessDomestic To Ocean OCSD WWTP No. 2 Brine Line OtherTreatmentOtherTreatment X Local WWTP Add’l Treatment Add’l Treatment XX Add’l Treatment Add’l Treatment X Local WWTP Treated Groundwater Treated Groundwater Residential Commercial SARISARI Upper

Preliminary Cost and Timeline Preliminary Costs are estimated at $160M* The project planning will take about 1 year Project construction would take 5 to 8 years The project could be on line by 2010 * In November 2003 dollars * In November 2003 dollars

Why are you doing this project? Gets the Salt Out –Improves water quality and supply –Maintains river quality –Reduced ocean discharge volume –Makes groundwater improvement in Orange County more effective

Why are you doing this project? Treatment of the future Treatment of the future –Improves water reclamation –Expands treatment system capacity in OC –Makes upgrading to secondary treatment quicker –Better treats discharges at their source

Further Information Rich Haller (909)