Valley South Subtransmission ProjectPowering the Region for the 21st Century

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SEPTEMBER 2014 PROJECT UPDATE

The Approval ProcessSCE will need to submit an application for project approval to the California Public Utilities

Commission (CPUC), which is the state regulatory agency that sets electricity rates and

authorizes the construction of certain electrical facilities. SCE’s application will include a

Proponent’s Environmental Assessment, which will evaluate the environmental impacts of the

project. Project review and approvals may be needed from other agencies.

Project Timeline• Late 2014/Early 2015: Anticipated date we will submit our Permission to Construct (PTC)

Application to the CPUC.

• Late 2017: Anticipated start of construction.

• Late 2019: Anticipated project completion date.

Project Contact InformationFor more information about the project, please call the project hotline at 1-866-785-7057 or visit www.sce.com/valleysouth. If you have questions or comments about the project, please contact your local SCE public affairs representative:

For Riverside County: Louis Davis Louis.Davis@sce.com or 951-249-8468

For Menifee: Ray Hicks Raymond.Hicks@sce.com or 951-928-8238

For Murrieta and Temecula: Jeremy Goldman Jeremy.Goldman@sce.com or 951-249-8466

View of the existing condition as seen from Suzi Lane, east of Shree Road, looking north.

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Valley South Subtransmission ProjectThe Valley South Subtransmission Project is Southern California Edison’s proposal to upgrade

the region’s existing electrical infrastructure and improve overall electrical reliability in the

cities of Menifee, Murrieta, Temecula, Wildomar and portions of southwestern Riverside

County including French Valley and Winchester.

Project NeedPortions of SCE’s existing electrical infrastructure serving the area are near or at their operating

limits. Much of the electrical infrastructure that serves our communities today was built decades

ago, when the typical household’s electrical needs were very different. The proposed project

addresses increasing electrical usage by residents and businesses in the area. The proposed

project is necessary for SCE to continue safely providing reliable power to our customers.

Project Description• The proposed project will be approximately 15 miles in length

• Construction of a new 115 kilovolt (kV) subtransmission line from our existing Valley Substation in Menifee and ending east of our existing Auld Substation in Murrieta

• Reconducter (install new conductor wires) on approximately 3.4 miles of an existing 115 kV line from east of our existing Auld Substation in Murrieta to west of our existing Triton Substation in Temecula

• Install communication equipment inside mechanical buildings at existing area substations to support the proposed Valley South Subtransmission Project

• Equipment modifications at Valley Substation in Menifee

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RIVERSIDECOUNTYCITY OF

LAKEELSINORE

CITY OFWILDOMAR

CITY OFCANYON LAKE

CITY OFMURRIETA

CITY OFPERRIS

CITY OFMENIFEE

CITY OFTEMECULA

CITY OFHEMET

CITY OFSAN JACINTO

LEGEND

Proposed ProjectProposed 115kV Subtransmission Line

Common to Both

Alternative ProjectAlternative 115kV Subtransmission Line

Existing FacilitiesTerminal TSP

Substation

Valley South Study Area

215

15

215

15

Map is not drawn to scale.

The purpose of this map is to show only relevant routes and substations.

Not all SCE facilities are included.

The Project in Your AreaMenifeeNear Valley Substation: Install

new 115 kV subtransmission

line and equipment

modifications at the Valley

Substation.

Near Scott Road: This area is

part of the alternative route. If

the alternative route is selected

instead of the preferred route,

then we would install new 115

kV subtransmission line.

MurrietaThis area is part of the

alternative route. If the

alternative route is selected

instead of the preferred route,

then we would install new 115

kV subtransmission line.

Riverside CountyNorth of Benton Road: Install

new

115 kV subtransmission line.

South of Benton Road:

Reconducter (install new

conductor wires) on an existing

115 kV line.

TemeculaReconducter (install new

conductor wires) on an existing

115 kV line.

Simulated view of the proposed project from a neighborhood trail along Old Leon Road, looking southwest.

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