A Local Agency Perspective

1. ACC – OC Infrastructure Summit • May 30, 2013 • A Local Agency Perspective The Economics of the Bay Delta Conservation Plan (BDCP):

2. Background on IRWD • IRWD’s water supply and system reliability • Connecting the BDCP to IRWD • What else is being done? • Questions • Today’s Discussion

3. California Special District governed by a publicly-elected board. • IRWD customer base: • Residential population: 350,000 • Daytime population: over 500,000 • Service connections: 102,381 • IRWD service area: • 181 square miles (20% of Orange County) • All or part of six cities and unincorporated county: • About IRWD Irvine Tustin Orange Lake Forest Newport Beach Costa Mesa

4. IRWD Services and System Statistics: • Potable Water:Four treatment plants, 25 wells, 1,500 miles of pipelines. • Wastewater: Nearly 1,000 miles of sewage collection pipelines. • Recycled Water:Two water recycling facilities (28.0 MGD + 5.5 MGD) and approximately 500 miles of recycled water pipelines. • Urban Runoff Treatment: The San Joaquin Marsh and 31 built and planned constructed wetland treatment sites. • Our Four Lines of Service

5. IRWD’s Water Supply Portfolio and System Reliability

6. Where Does Southern California get its water? Transfers & Storage Groundwater Banking Local Supplies LA Aqueduct State Water Project Entitlement 2 Million AF Colorado River Aqueduct 700,000 AF Conservation Local Supplies Groundwater & Recycling

7. IRWD’s Historical Water Supply • IRWD water supply in 1990 • Conversion: 1 acre-foot = 325,851 gallons = 1,233,482 liters

8. Connecting the BDCP to IRWD

9. The BDCP will provide benefits to all of California. • IRWD and the BDCP Statewide: Regional: Local:

10. What else is being done?

11. Regional Benefits from Met Funding Local Projects: • IRWD Projects with Met Funding • Defers Met’s need to construct and operate new water supply projects; • Reduces region’s reliance • on imported supplies; and • Improves supply diversity for local water agencies: Potable Water Supply Projects Recycled Water Program Water Use Efficiency

12. Potable Water Supply Projects: • Dyer Road Well Field Seasonal Shift Program Incentivized IRWD to pump wells during MWD peak usage periods From 1988 through 2008, total LRP funding: $15 million Irvine Desalter Project Potable Treatment Plant New local water supply: 63,000 acre-feet of treated groundwater From 2006 through 2027, estimated LRP funding: $15 million Wells 21 and 22 Desalter Project New local water supply: 121,000 acre-feet of treated groundwater From 2012 through 2037, estimated max LRP funding: $30 million • IRWD Projects with Met Funding

13. IRWD Recycled Water Program • IRWD Projects with Met Funding • Michelson Water Recycling Plant – LRP1 Assisted IRWD to develop RW production: 3 MGD to 13 MGD From 1986 through 2011, 186,000 acre-feet of recycled water Incentive at $154 per AF; total LRP Funding: $29 million IRWD Water Recycling Plants – LRP2 Assisted IRWD to develop RW production: 13 MGD to 18 MGD From 2005 through 2030, 131,000 acre-feet of recycled water Incentive at $117 per AF; estimated LRP funding: $15 million • Conversion: 1,000 AF per year = 0.9 MGD

14. Water Use Efficiency Initiatives • IRWD Projects with Met Funding • Met Incentives to IRWD from 2005 through 2012: • Residential Incentives: $1.3 million • Commercial Incentives: $3.1 million Met funding incentives based on Met’s avoided cost. Incentive at $154 per AF Funded through Met’s Water Stewardship Fund ($43 per AF) Met incentives leveraged by IRWD at average of $225 per AF “Lifetime” Water Savings = 19,000 acre-feet On-going program.

15. IRWD Water Supply Reliabilityinto the Future

16. IRWD’s Water Supply Portfolio Today IRWD has a diverse, reliable water supply. 2011 Total Water Supply, By Type * Excludes IRWD water banking (50,000 AF storage)

17. IRWD Contact Information • www.IRWD.com Paul Cook, General Manager phone: (949) 453-5590 email: cook@irwd.com