2.  What’s Being Protected?  A little more about the Santa Ana River and Brine Line  Storm Response  Pre-Planning – Emergency Response Plans, Training  The Event  Storm Impacts and Follow-On Actions – repairs, lessons learned

6. “Tee” Levees in Orange County

7.  Major Dischargers  6 Brackish Groundwater Desalters (50 MGD of potable water)  3 Power Plants (2000 MW; ~1.5 M Homes)  2 State Prisons (10,000 inmates)  Various Industries  Hauled Brine Wastewater (4 stations, 60 trucks/day)  Economy of Inland Empire - over $1B, 4,000 jobs  Water Quality of Santa Ana River, OC Beaches  OCSD Treatment Plants

8.  Pre-Planning  Emergency Response Plan – OCSD, SAWPA, Corps  Annual plan update, meeting, training in fall  “Just-in Time” Training  The Event  Lots of rain in short period of time resulting in high river flow and volume  Twice daily coordination: Corps, OCSD, SAWPA, OCWD, OC PW, RCFC

9. Top of Embankment Conservation Pool 505’ 543’ Spillway Elevation (188k AF) 594.4’ Inspection/Repair 100cfs 5,000cfs 3,000cfs Debris Pool 498’

12. SAVI Ranch Gypsum Canyon Coal Canyon 91 241 Green River Golf Course

15. Grade Stabilizer at Green River Golf Course Grade Stabilizer at SAVI Ranch

16.  1/13/11 topographic survey over pipe  3 locations within floodplain - Orange County  Two “scour pockets” over pipe found  SAVI Ranch Grade Stabilizer  Green River Golf Course Grade Stabilizer  Coal Canyon – minor erosion, debris accumulation  Work ongoing, OCSD contractor  Emergency rock placement, debris removal 1/20 - 25/11  Cost unknown at this time  FEMA reimbursement will be requested by OCSD

17. Reach IV Aliso Creek

18. Lateral to CA Rehabilitation Center Auburndale Street Looking South

19. Euclid Ave. Looking North

20. Reach V Temescal Canyon RD near Trilogy RD

21.  SAR is operated as an integrated system  Team approach to response – lots of coordination  Existing relationships key to success  Ongoing joint activities, projects  Emergency Response Plan  Good overall plan. Some fine tuning required.  “Just-in-time” training for key participants was invaluable.  Prado Dam Water Surface at Record Elevation (529.4 ft)  Water-tightness of the pipe, MASs confirmed.  Seals at several MASs to be evaluated for improvement especially at the higher water surface elevation.

22.  Brine Line in Orange County  Coordination team established: Corps, OCPW, OCSD, OCWD, RCFCD, SAWPA created  Effectively communicated issues and identified solutions.  Result: reduction in dam outflow from 5,000 cfs to 2,500 cfs for 4 days and a reduction to 100 cfs to facilitate inspection/repair.  Group should be formalized in the agencies’ emergency response documents.  Areas of erosion over pipe, around MAS  Traditional trouble spots remain. New locations identified.  Erosion locations need to be evaluated for protection measures to prevent or reduce future erosion.

23. QUESTIONS