STATE OF CALIFORNIA
Project as described in PG&Eís September 1999 Supplemental
Proponentís Environmental Assessment)
The proposed project
is intended to expand PG&Eís capacity to provide electric service
to the northeast San Jose area. The
project would require construction of several components, which are
described in more detail below:
The proposed Los Esteros Substation site is located on the north
side of State Route 237, between Zanker Road and Coyote Creek.
The site would occupy the northern 24 acres of a 54-acre property
that is currently occupied by greenhouses, agricultural facilities, and
buildings that house residents engaged in agricultural work. The substation would be an unattended, remote-controlled
facility that would require periodic maintenance. The substation would initially consist of three 230/115 kV
transmission transformers, circuit breakers, bus, capacitors, and
controls. Ultimately, a
fourth 230/115 kV transformer would be installed.
also plans to install four 230/21 kV transformer banks at the Los
Esteros Substation on the west side of the proposed 24-acre substation
site. Each transformer bank
would serve three 21 kV distribution circuits that connect into the 21
kV distribution system. These
twelve 21 kV circuits are planned for connection to existing or future
distribution lines in the area of the Los Esteros Substation.
Distribution substation banks would be added to the substation
when the load is projected to exceed capacity.
PG&E anticipates this will occur within the next ten years.
kV Transmission Line.
The proposed project includes the construction of a 7.3-mile-long;
230 kV double-circuit transmission line from the Newark Substation to
the new Los Esteros Substation. PG&Eís
Proposed Route parallels existing PG&E 115 kV power lines for
approximately two miles of its 7.3-mile length and then diverges easterly.
The route crosses property owned by Catellus Corporation south of
the Auto Mall Parkway, two Cargill Salt Company (Cargill) salt ponds,
the westerly edge of the Bayside Business Park, the Fremont Airport
property, the Santa Clara Valley Water Districtís Coyote Creek Flood
Control Channel, and the San Jose/Santa Clara Water Pollution Control
Plant (WPCP) property north of State Route 237.
The 230 kV bus structure within the existing Newark Substation
yard would be extended to accommodate the new 230 kV transmission line.
The area that would be occupied by the new equipment is within
the existing footprint of the substation and is currently used as a
storage area for heavy electrical equipment.
PG&E would relocate this equipment to another facility to make
room for the modification.
kV Power Lines. The Los Esteros
Substation would be connected to the 115 kV transmission system via four
115 kV power lines: Los
Esteros to Kifer Power Line, Los Esteros to Trimble Power Line, Los
Esteros to Montague Power Line, and Agnews Tap Line.
This would be achieved, in part, by utilizing 115 kV power lines
to be built as part of the North San Jose Area Capacity Increase Project
(Nortech Project) for which the commission has issued a Permit to
plans to follow existing power lines and utilize double-circuit steel
poles in order to minimize the creation of new power line corridors to
the greatest extent possible.
Considered in the Proponent's
Environmental Assessment (PEA)
The PEA included in PG&E
Application presents several alternatives for
routing of the 230kV transmission line and for the substation site. The following transmission line alternatives are presented:
PEA also evaluates several alternative substation sites in the
northeastern San Jose area.
alternatives will be evaluated, and additional alternatives will be
considered to determine which alternatives will be studied in the EIR. Input received during the scoping process will be considered
in making this determination.
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