Water Reclamation Plant Feasibility Study Update July 23, 2014

Project Feasibility? Environmental Impacts/ Benefits Technical Feasibility Permits/ Institutional Agreements Plant Location Community Concerns & Input Initial Project Considerations Technical Feasibility

Project Decision Timeline Site Selection Required Infrastructure Potential Uses Treatment Requirements Potential Partnerships Complimentary/Secondary Uses Costs and Financing Draft Report/Summary Final Report Continuous Outreach MayJuneJulyAugustSeptemberOctober

Potential Plant Locations 210 Near District Headquarters Near Golden Triangle Sterling Road

Three Types of Potential Use  Landscape Irrigation  Commercial/ Industrial Use  Groundwater Recharge

Using Recycled Water for Irrigation From 2014 Water System Master Plan

Major Infrastructure Requirements Recommended Plant Site

Urban Irrigation Use Summary  Need for Expensive Infrastructure  Pipeline  Booster Pumps  Water Storage  On-site Irrigation Systems  Need for Irrigation Water Varies  Demand is typically near zero in December and January  Would require a process to recycle water in winter months

Limited Commercial/Industrial Use 210 Commercial and Industrial use Areas

Commercial/Industrial Summary  Need for expensive infrastructure  Contingent on user demand  Need for water varies  Limited potential users

Groundwater Replenishment (Recharge) 210 Groundwater Recharge Areas

Groundwater Recharge Summary  Existing recharge basins within reasonable distance  Send treated water to groundwater basin  Creates local water supply  On-going need for recharge

Potential Recycled Water Uses Urban Irrigation Commercial/ Industrial Groundwater Recharge Infrastructure Requirements Full Use of Available RW Ease of Implementation Cost to Implement Relative Lower Ranking Relative Higher Ranking

Groundwater Recharge in Action Project Years of Operation Recycled Water Volume AFY Montebello Forebay Project, Los Angeles County SD 5155,000 West Coast Basin Intrusion Barrier, West Basin MWD 1917,000 Dominquez Gap Barrier, Los Angeles County SD 105,400 Chino Basin Project, San Bernardino County 822,000 Alamitos Gap Intrusion Barrier, Los Angeles County SD 83,400 Groundwater Replenishment System, Orange County WD 578,000

Continue to Evaluate Uses If Selected Recharge Location Evaluate Irrigation and Commercial Deliveries

Title 22 Tertiary Treatment

Project Decision Timeline Site Selection Required Infrastructure Potential Uses Treatment Requirements Potential Partnerships Complimentary/Secondary Uses Costs and Financing Draft Report/Summary Final Report Continuous Outreach MayJuneJulyAugustSeptemberOctober

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