Presidential 66/16 Kilovolt Substation Project
WELCOME
To Southern California Edison Company’s
Presidential 66/16 Kilovolt
Substation Project
OPEN HOUSE
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Presidential 66/16 Kilovolt Substation Project
Welcome to The Presidential 66/16 Kilovolt
Substation Project Open House
How is the open house organized?
• This open house is designed to provide you with information related to
the Presidential 66/16 Kilovolt Substation Project and to answer your
questions.
• The open house is informal — feel free to move around the room at your
own pace and talk with the Presidential 66/16 Kilovolt Substation Project
team about any issues or questions you may have.
• Each topic table represents an issue or question that we thought you
may want to know more about.
• We welcome your comments and questions. Comment cards are available at each table.
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Presidential 66/16 Kilovolt Substation Project
Project Overview
As part of the Presidential Substation Project, SCE is proposing
to construct a new substation in the city of Thousand Oaks. The
unstaffed, low-profile distribution substation would allow highvoltage electricity (66 kilovolts) to be reduced to a lower voltage
(16 kilovolts) so that it can be distributed for use in homes and
businesses. The project will also include the construction of a
new overhead subtransmission line entering the new substation. The new subtransmission line would connect to two existing
subtransmission lines in order to supply electrical power for the
new substation.
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Presidential 66/16 Kilovolt Substation Project
Path of Electricity
Generating
Stations
Transmission
Substation
PRESIDENTIAL
SUBSTATION
PROJECT
Distribution
Substation
Transmission Line
(Typically 500 kV
and 220 kV)
Customers
Subtransmission Line
(Typically 115 kV
and 66 kV)
Distribution Line
(Typically 33 kV
and12 kV)
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Presidential 66/16 Kilovolt Substation Project
Project Benefits
The Presidential Substation project would:
• Allow SCE to increase its capacity to deliver electricity from
SCE’s electrical grid, maintain system reliability and serve the
projected increase in electrical demand.
• Relieve projected overload conditions at SCE’s existing
substations in the area.
• Provide new facilities that will help minimize the likelihood
of unanticipated service interruptions and provide SCE
with enhanced operational flexibility during periods of peak
customer demand.
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Presidential 66/16 Kilovolt Substation Project
Substation Simulation
Existing view facing southwest from Olsen Road towards proposed site.
Simulation of view facing southwest from Olsen Road towards proposed site.
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Presidential 66/16 Kilovolt Substation Project
Subtransmission Line Simulation
Existing view on Read Road facing west
towards Sunset Valley Road.
Simulation of view on Read Road facing west
towards Sunset Valley Road.
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Presidential 66/16 Kilovolt Substation Project
Typical Pole Designs
LIGHTWEIGHT STEEL POLES
66 Kilovolt
Single-Circuit Pole
66 Kilovolt Pole with
Distribution (Vertical)
66 Kilovolt Pole with
Distribution (Horizontal)
16kv
66kv
66 Kilovolt
Tubular Steel Pole
66kv
16kv
65' - 85'
65' - 85'
10'
65' - 85'
12'
10'
75'
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Presidential 66/16 Kilovolt Substation Project
How Does SCE Determine New Facilities Are Required?
• Electric system facilities have capacity limitations. When current and projected demand for electricity
outpaces the capacity of the existing infrastructure, SCE proposes a project to increase system capacity. The proposed project is designed to maintain safe, reliable, and adequate service to existing and new
customers.
• Once the need for a new project is identified, SCE commences a multi-step planning process to ensure
the development of appropriate system facilities is undertaken in time to meet the projected increases in
electrical demand:
– Peak demand forecasts are developed using available and projected demographic and economic
information. SCE takes the following information into consideration:
– Historical trends
– New development built or under construction
– City and County-approved projects and General Plans
– Existing and forecasted customer demand (residential & commercial)
– Technical engineering studies are conducted to determine whether forecasted demand can be
accommodated utilizing existing facilities.
– If technical studies indicate that projected long-term demand cannot be met by utilizing or
expanding existing facilities, SCE begins a detailed process to site and construct a new substation
to serve local electrical needs.
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Presidential 66/16 Kilovolt Substation Project
Substation Siting
SCE considers several criteria during its siting process, including electrical system needs, natural and cultural resources,
visual impacts, and environmental impacts, as well as complying with safety, reliability and construction standards that are
required of electric utility companies in California.
Requirements to Meet Project Need
•
•
•
•
Sufficient parcel size
Generally square shape
Proximity to existing power lines
Access for construction & operations
CEQA Compliance
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Fault rupture hazard zones
Flooding & erosion potential
Residential areas, schools, childcare centers, and hospitals
Water bodies & wildlife habitats
Protected biological & cultural resources
Important viewsheds and pristine visual environments
Local Community Information
• Locally-valued places
• Community priorities
• Land use plans, policies and projects
Design & Construction Factors
• Drainage patterns on or near the site
• Existing facilities on the site requiring removal in
order to build
• Existing soil contamination requiring clean-up
• Future road improvement plans impacting
substation placement
When impacts cannot be avoided, they can often be mitigated. When evaluating the suitability of substation sites, SCE also
considers the mitigation potential of different site locations.
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Presidential 66/16 Kilovolt Substation Project
Subtransmission Line Routing
To power the substation, it is necessary to connect it to two existing 66 kilovolt subtransmission lines.
Once SCE has identified a proposed site for the substation based on the previously listed factors, SCE
completes a similar screening process to identify line routes.
Potential routes are identified based on the following:
- Existing SCE rights-of-way and facilities
- Accessibility for construction and operations
- Visual impacts
- Total distance
Environmental evaluation includes, but is not limited to:
- Fault rupture hazard zones, areas of liquefaction potential and major landslides
- Flooding and erosion potential
- Residential areas, schools, childcare centers, and hospitals
- Water bodies and wildlife habitats
- Biological and cultural resources
When impacts cannot be avoided, they can often be mitigated. When evaluating the suitability of
line routes to the substation, SCE also considers the mitigation potential of different route locations.
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Presidential 66/16 Kilovolt Substation Project
Anticipated Project Timeline
August 2008 Project Open House
4th Quarter 2008 SCE expects to file an application for a
Permit to Construct with the California
Public Utilities Commission.
4th Quarter 2009 The California Public Utilities
Commission’s decision is expected.
2nd Quarter 2010 The Presidential Substation Project is
expected to be operational.
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Presidential 66/16 Kilovolt Substation Project
California Public Utilities Commission (CPUC)
Approval Process
• The proposed project falls within the jurisdiction of the CPUC.
• Following completion of project planning activities, which include discussions
with area residents, landowners, government officials and other parties, SCE will
submit an application to the CPUC requesting approval to construct the project.
• The CPUC will review the project in compliance with the requirements of the
California Environmental Quality Act (CEQA).
• The CPUC review process may include: public scoping meetings; issuing
environmental documents (Environmental Impact Report or Mitigated Negative
Declaration) for review; and convening public participation hearings.
• The CPUC will review SCE’s application and then approve the project as filed,
approve the project with modifications, or deny the project.
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Presidential 66/16 Kilovolt Substation Project
How Does SCE Comply With
Environmental Laws And Regulations?
SCE complies with all applicable local, county, state and federal environmental
laws including:
– California Public Utilities Commission (CPUC) General Order 131-D
– California Environmental Quality Act (CEQA)
– National Environmental Quality Act (NEPA)
– Clean Water Act
– California and Federal Endangered Species Acts
– Clean Air Act
– National Historic Preservation Protection Act
– Archeological Resources Protection Act
– Migratory Bird Treaty Act
– California Department of Fish and Game Code
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Presidential 66/16 Kilovolt Substation Project
How Does SCE Minimize Environmental Impacts?
• Identifies and avoids sensitive biological resources
and cultural resource sites wherever possible
• Uses existing roads and rights-of-way wherever
possible
• Schedules construction activities to avoid critical
lifecycles for sensitive species
• Uses construction techniques (best management
practices) that minimize environmental impacts
• Utilizes on-site biological/archaeological monitors in
sensitive areas
• Provides environmental training for all workers
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Presidential 66/16 Kilovolt Substation Project
Right-of-Way Acquisition Process
After CPUC Approval
• Determine extent of required right-of-way to be acquired
• Survey/Title/Mapping/Document preparation
– Preliminary title reports obtained
– Grants of easement proposed (easement rights obtained include
the right for construction, maintenance, and access)
• Appraisal process to value right-of-way completed
• State-certified appraiser (determines estimate of fair market value
for the easement)
• Meet and negotiate with property owners
• Acquire easement from property owner
• Full payment made to property owner
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Presidential 66/16 Kilovolt Substation Project
How Does SCE Minimize Construction Impacts?
SCE will work with local officials, residents, and businesses to minimize the impacts of this
project. Specifically, SCE will:
• Comply with all applicable local ordinances and regulations, including dust control,
noise abatement, and other environmental measures.
• Provide prior notification to affected property owners of construction activities,
including information on street closures and other activities that could temporarily limit
access for area residents.
• Provide residents and local businesses with contact information for SCE personnel
who are available to answer questions that may arise during construction.
• Ensure the safety and security of all construction activities. Construction equipment
will be removed or secured during non-working hours; open holes and potential
hazards will be covered and marked.
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Presidential 66/16 Kilovolt Substation Project
Typical Subtransmission Line Construction Activities
Survey
Erect poles
Build foundations
String wire
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Presidential 66/16 Kilovolt Substation Project
Hours of Construction
• Construction crews typically work six days per week, Monday
through Saturday, during daylight hours.
• Actual working hours will depend on
- Project schedule
- Permit restrictions and agency imposed hours of construction
- Weather conditions
Site Security and Safety
• Substation site will be fenced and secured during construction.
• Construction equipment will be locked and construction areas
may be patrolled.
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Presidential 66/16 Kilovolt Substation Project
What Are Electric And Magnetic Fields (EMF)?
• Electric and magnetic fields (EMF) are invisible lines of force that surround any electrical device.
Power lines, electrical wiring, appliances, and electrical equipment all produce EMF. The
strength of these fields decreases rapidly with distance from the EMF source.
• The California Public Utilities Commission (CPUC) requires SCE to utilize no-cost and low-cost
measures in the design of new facilities as a precautionary-based EMF policy to reduce public
exposure to EMF.
• In accordance with “EMF Design Guidelines” filed with the CPUC in compliance with CPUC
Decisions 93-11-013 and 06-01-042, the following no-cost and low-cost magnetic field reduction
measures will be considered for this project:
–
Using taller poles for the proposed new 66 kV subtransmission lines;
–
Using a “triangle” type pole-head configuration for the 66 kV subtransmission lines; and
–
Placing major substation electric equipment (such as transformers, capacitor banks,
switchracks, etc) away from the exisitng substation property lines.
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Presidential 66/16 Kilovolt Substation Project
Notes about the Magnetic Field Graphs
• The magnetic field graphs are only intended to show relative differences in
magnetic field levels between the existing design and proposed subtransmission
design under a specific set of modeling assumptions.
• The magnetic field graphs are not intended to predict actual magnetic field levels
at any given time or at any specific location because magnetic fields vary with time. The magnetic fields will continuously vary with customer electricity usage, load
growth and other factors beyond SCE’s control.
• By implementing appropriate no-cost and low-cost magnetic field reduction
measures, SCE attempts to reduce magnetic fields to levels lower than they would
be if SCE had not considered various magnetic field reduction measures.
• All magnetic field graphs are based upon preliminary engineering designs;
therefore, they are subject to change.
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Presidential 66/16 Kilovolt Substation Project
A Design Comparison of Magnetic Field Levels
Proposed Subtransmission Line Route:
Read Road/Moorpark Road to Substation Site
Preliminary
Proposed Subtransmission Line Route:
Tierra Rejada Road/Esperance Drive to Substation Site
Preliminary
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Presidential 66/16 Kilovolt Substation Project
A Design Comparison of Magnetic Field Levels
Alternative Subtransmission Line Route:
Olsen Road/Sunset Hills Boulevard to Substation Site
Preliminary
Alternative Subtransmission Line Route:
Madera Road/Royal Avenue to Substation Site
Preliminary
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Presidential 66/16 Kilovolt Substation Project
Before You Leave
• If you have additional questions or
desire additional information, please
fill out a comment card.
Project Website:
www.sce.com/presidential
ential
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nt Car
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Comm
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• If you did not receive a project fact
sheet in the mail, and would like to
receive written project information,
please complete the project mailing
list section on the comment card.
Presid
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with yo
ur com
ments
!
Thank You For Coming!
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