Ignacio to Mare Island Napa Tower Replacement


SCH Number
Lead Agency
Fish & Game #3
Document Title
Ignacio to Mare Island Napa Tower Replacement
Document Type
NOE - Notice of Exemption

Document Description
PG&E proposes to replace two aging 246-foot tall towers in the Napa River, approximately 7 miles from Carquinez Strait. The Napa River is approximately 2,000 feet wide in the project area and the two towers to be repaired are approximately 150 feet from the east and west bank of the river. The replacement towers will be built in the same locations on the existing concrete foundations, which will be retrofitted to repair cracks and exposed rebar. The areas around the footings of towers 15/106 and 15/107 will be dewatered using cofferdams installed around each footing. The two cofferdams will both be approximately 165 feet by 80 feet, covering an area of approximately 26,400 square feet. After the footings have been dewatered, they will be excavated so that any necessary repairs to the foundation can be made. Clean, crushed rock will be permanently placed in the dewatered cofferdams and recovered with excavated sediment upon completion of the project. Issuance of a Streambed Alteration Agreement Number 1600-2008-0164-3 is pursuant to Fish and Game Code Section 1602.

Contact Information
Anna Holmes
California Department of Fish and Game
P.O. Box 47
Yountville, CA 94599

Phone : (209) 358-2355



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The project will replace existing structures in the same location and will serve the same purpose.

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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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