Page 1901 - trc_centennial_deir201705

5.20 Dry Utilities

Bailey Substation located on an SCE-owned parcel within the southwestern corner of, but
not part of, the Project site or (2) upgrading the Gorman Substation and retrofitting existing
overhead transmission lines to handle the higher load. At this time, upgrading the Bailey
Substation is considered the more likely solution; however, both options will continue to
remain viable until later stages of the site development process subsequent to the CEQA
process. If the Bailey Substation is upgraded, no upgrades to the Gorman Substation or other
off-site facilities will be necessary to serve the first phase of Project implementation.

Improvements to SCE facilities (including upgrading the existing Gorman Substation and
associated overhead lines or upgrading the Bailey Substation) would occur entirely on
SCE-owned lands and within existing development footprints. The inclusion of these
electricity upgrades were included in the Project description and were included throughout
the Project analysis. There would be a less than significant impact related to SCE (i.e., off-
site) facilities and services.

Each of the proposed off-site well locations would be served by electricity to power the well
pump and to control and monitor equipment. Electricity would be delivered to each well
location through an underground or aboveground tie-in to the nearest electrical line from
each well location. These lines would be near the proposed well locations, as CEW-3, CEW-
4, and CEW-5 are located proximate to the existing Tejon Water Bank, all of which are, or will
be, served by electricity. Collectively, the off-site wells would demand a minimal amount of
electricity, particularly compared with the anticipated peak demand for buildout of the
Project, which can adequately be served by SCE. Therefore, based on SCE’s review and
commitment to serve the Project, they would be able to serve the proposed off-site wells
with electrical service without adversely affecting existing or planned service. There would
be a less than significant impact and no mitigation is required.

Impact Summary: The Project would result in less than significant impacts to electrical
service and facilities with implementation of the Green Development
Program as well as MM 20.2-1 and MM 20.2-2.

Mitigation Measures

MM 20.2-1 The Project Applicant/Developer shall coordinate with Southern California
Edison (SCE) to ensure that there are no prolonged disruptions to the existing
transmission lines that extend through the Project study area and to
coordinate in the design and implementation of future electrical service and
facilities (e.g., transmission lines, access road) in the Project study area. This
will ensure that (1) no prolonged service disruptions during the extension and
upgrading of these services would arise; (2) the nature, design, and timing of
electrical system improvements are in accordance with all SCE requirements;
and (3) the improvements are adequate to serve the proposed land uses and
are available for the first occupied land uses.

MM 20.2-2 The Project Applicant/Developer shall provide the County with plans and
specifications that demonstrate a future substation shall be constructed in the
eastern half of the Project site to serve Project development in the easterly

R:\Projects\PAS\CEN\000306\Draft EIR\5.20 Dry Utilities-051117.docx 5.20-13 Centennial Project
Draft EIR