Transmission Projects Update

Board of Public Utilities October 5, 2012

Casa Blanca Power Project

Major System Improvement

Demolition of old 33 kV to 4 kV substation Construction of new 69 kV to 12 kV substation Property acquisition for new substation 4-12 kV conversion of existing 4 kV circuits HMPE cable replacements New 69 kV Lines into substation New 12 kV feeders out of substation

Identified through the Electric System Master Plan

Casa Blanca Power Project Budget

Project Elements and Approved Budget Substation: $ 9,000,000 Property Acquisition: $ 1,540,000 4-12 kV Conversion: $ 800,000 HMPE Cable Replacement: $ 380,000 Dist. Feeders and Transmission: $ 3,330,000

Total: $15,050,000

Final project costs pending and will be under budget

Riverside Transmission Reliability Project (RTRP)

RTRP - a second connection to the state electric transmission grid

RTRP consists of: A) 230 kV Transmission Line

Travels through City of Riverside, City of Norco, Riverside County, and City of Jurupa Valley

B) 230-69 kV Substations Two stations adjacent to each other in the City of

Riverside C) 69 kV Subtransmission Lines

Entirely within the City of Riverside

RTRP Project Costs

Original Estimate: $150 - $185M

Riverside portion - Substation and 69kV Grid: Approximately 75% of the project

SCE portion – Substation and Transmission Lines: Approximately 25% of the project

RTRP Phase 1 Work

Estimated Cost $3.9M SCE Studies Preliminary

Environmental Public Input Transmission Route Options Reimbursement Agreement (RPU – SCE) Interconnection Facilities Agreement (RPU – SCE –

FERC) Final approval required by CAISO and FERC Recommended Phase 2 Work Q1 2007

RTRP Phase 1 Work

Environmental surveys Public outreach efforts Drafting of the Environmental Impact Report (EIR) Comment Responses/Disposition Preparation of Final EIR Meetings support Detailed design Material procurement assistance Construction Management Technical assistance with FAA

RTRP Riverside Public Utilities’ Costs and Budget

PHASE 1 $ 3,900,000

PHASE 2 $ 11,477,600

CONSTRUCTION $121,622,400 TOTAL $137,000,000

Riverside Transmission Reliability Project (RTRP)

Draft Environmental Impact Report (DEIR) out for public comment Aug-2011 to Nov-2011

More than 100 commenters provided comments

City Planning Commission reviewed DEIR in Apr-2012, found it consistent with CEQA, and recommended item to City Council for approval

Also in April-2012, County’s Airport Land Use Commission found project to be consistent with County’s land use plan

Regional Conservation Authority review is underway – favorable Joint Project Ruling sought prior to City Council’s consideration

Final Environmental Impact Report nearly complete – targeting 12/4/2012 City Council meeting

Estimated Total Project Cost estimated at $171 million (Power Engineers Phase 1 Report, Sep-2006)

Riverside Transmission Reliability Project (RTRP)

Subtransmission Project (STP)

Major System Improvement and Reconfiguration of 69KV Transmission Network affecting 8 Substations

→ Vista Substation → Hunter Substation → University Substation → La Colina Substation → Riverside Substation → Springs Substation → Plaza Substation → Freeman Substation

Improvements Required for RTRP and System Reliability

Key Milestones

CEQA IS/MND approved 9/2009 Phases I, II, and III are complete Project Completion contingent upon completion of final phase

Construction of Phases I, II, and III are complete

Property rights for final phase through UCR are being negotiated

Project Budget is $20,500,000 (Board approved Nov-2009)

Subtransmission Project (STP)