Active construction of the Tri-Valley Project has not occurred since
December 2003. The first two major project phases are now complete, and
one phase remains to be built. The status of each phase is as follows:
- Phase One: Within the Cities of Pleasanton and Livermore and
in unincorporated Alameda County, the major activities of Phase One
included an underground 230 kV transmission line from the Vineyard Substation
(on Stanley Boulevard) to a newly constructed Transition Station connecting
to the Tesla-Newark Transmission Line (near the Zone 7 Water Agency
facility). Construction of this phase is complete and the line was officially
released to operations in July 2003. However, On January 1, 2004, sinkholes,
slumping, and compaction was identified along the Phase One alignment.
Extensive repair and restoration work occurred and was completed April 8, 2004.
- Phase Two: In North Livermore, Phase Two activities included
construction of an underground 230 kV transmission line from the newly
constructed Cayetano Substation (on North Livermore Road) to a newly
constructed Transition Station connecting to the Contra Costa-Newark
Transmission Line. Construction is complete and the line was officially
released to operations in December 2003.
- Phase Three: According to PG&E, Phase Three construction
will begin in April 2005. Located in North Livermore and extending west
to an area north of Dublin, this phase includes construction of a new
transmission line with overhead and underground segments. The line will
be constructed underground from the Cayetano Substation to the north,
then trend west and transition above ground across unincorporated Alameda
and Contra Costa Counties terminating at a new substation. Pre-construction
consultation for this segment is underway.