Spent Fuel Pool Island Southern California Edison, San Diego Gas & Electric, Cities of Anaheim and Riverside CDP Application #: August 13, 2015

Objectives Present proposed project (independent cooling system) Describe purpose and benefits of project Discuss impact on coastal resources Request CCC approval of Coastal Development Permit 2

Spent Fuel Pool Island Video 3

Purpose & Need Sets stage for a safe and prompt decommissioning –Systems de-energized and drained –Safe dismantlement of systems and structures Modification achieves: –Elimination of once-through cooling –Continued safe management of used fuel –Reduced overall operating costs for customers 5

Project Description Replaces current ocean cooling system with a compact system better suited for a shutdown plant with lower heat load Spent Fuel Pool Island (SFPI) involves installation of chillers, heat exchangers, pumps, and piping System in use until all spent fuel is moved to dry storage 9

Selected Technology No water usage No vapor plumes Reliable, off-the- shelf technology Consistent temperature control 11

Unit 3 Fuel Handling Building Unit 2 Fuel Handling Building

Unit 3 Fuel Handling Building Unit 2 Fuel Handling Building 2 3 Equipment Container Chiller Unit 13

Public View of Project Site 14

Spent Fuel Cooling Existing Spent Fuel Cooling System Complex system Requires ~ 20% of the operating plant systems Requires ocean cooling Proposed Spent Fuel Pool Island Simple and compact Self-contained system Eliminates ocean cooling Reduces by 50% amount of ocean water needed 15

Requesting Coastal Commission approval of CDP for proposed project: No adverse environmental impact Proven, safe technology Facilitates timely decommissioning Results in cost savings for customers Summary 18