PacifiCorp Lassen Substation Project

3 Documents in Project


SCH Number
Lead Agency
California Public Utilities Commission (CPUC)
Document Title
PacifiCorp Lassen Substation Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use

Document Description
The proposed project is located in city of Mount Shasta and in unincorporated Siskiyou County. The proposed project consists of the demolition of the existing Mount Shasta Substation, construction of the new Lassen Substation, and pole replacement and reconductoring activities. The existing and proposed substations are located to the west in I-5 and the pole replacement, and reconductoring activities would occur both on the west and east of I-5 in the south central portion of unincorporated Siskiyou County. Existing transformers in the Mount Shasta substation would be replaced with 12.47 kV transformers in the new Lassen Substation, which in turn would require the existing 4.16 kV distribution lines that currently supply the city to be upgraded to 12.47 kV distribution lines. To accommodate the additional weight of the new distribution lines and maintain compliance with title 8 of the California code of regulations and CPUC General order 95, 36 wooden poles along the existing 69 kV transmission line running to the northwest and southeast of the proposed substation would be replaced and the existing 69 kV transmission line would be transferred to the new poles. Implementation of the proposed improvements would help ensure PacifiCorp that all equipment and structures comply with current company, state, and federal standards, including the replacement of aging and non-standard equipment and the removal of sulfur hexafluoride distribution breakers, ensure a reliable ongoing electricity supply to the area currently served by the Mount Shasta substation; and facilitate regional bulk transmission voltage stability and improve bulk power transfer across the region.

Contact Information
Michael Rosauer
California Public Utilities Commission
Lead/Public Agency
505 Van Ness Avenue
San Francisco, CA 94102-3298

Phone : (415) 703-2579


Mount Shasta
Cross Streets
SR 78, Creelman Ln, Arena Way, Oak Hollow Rd, Littleplace Rd
Parcel #
036-220-280, -170
State Highways
Mt Shasta ES, I AM School
Cold Creek, Big Springs Creek, Wagon Creek, Mill

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (electrical substation and transmission facilities)
Local Action
CPUC permit to construct
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Cultural Resources Cumulative Effects Drainage/Absorption Flood Plain/Flooding Geology/Soils Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Solid Waste Transportation Vegetation Wetland/Riparian Wildfire Wildlife
Reviewing Agencies
California Department of Parks and Recreation California Department of Transportation, District 2 (DOT) California Energy Commission California Highway Patrol California Native American Heritage Commission (NAHC) California Public Utilities Commission (CPUC) California Regional Water Quality Control Board, North Coast Region 1 (RWQCB) Department of Toxic Substances Control Department of Water Resources Resources Agency Resources, Recycling and Recovery California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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