Mountain Tunnel Improvement Project
4 Documents in Project
Summary
SCH Number
2019079057
Lead Agency
City and County of San Francisco
Document Title
Mountain Tunnel Improvement Project
Document Type
NOD - Notice of Determination
Received
Posted
4/15/2022
Document Description
The State Water Resources Control Board (State Water Board) is a Responsible Agency for the Project. The State Water Board’s Drinking Water State Revolving Fund (SRF) Program is financing the Project. The Project will address deterioration by repairing defects in the 11 miles of existing tunnel lining and paving approximately 5,000 feet of currently unlined portions downstream of the adit 5/6 portal. The Project will construct a 750-foot bypass tunnel (siphon extension) at South Fork Siphon and a new flow control facility, portal, and adit near Priest Reservoir. Improvements will also be made to some of the roads that provide access to the tunnel improvements and drainage facilities along the roadways and at the adits.
Contact Information
Name
Timothy Johnson
Agency Name
San Francisco Planning Department
Job Title
Senior Planner
Contact Types
Lead/Public Agency / Project Applicant
Phone
Name
Brian Cary
Agency Name
State Water Resources Control Board
Job Title
Senior Environmental Scientist
Contact Types
Responsible Agency
Phone
Location
Cities
groveland
Counties
Mariposa, Tuolumne
Regions
San Francisco Bay Area
Other Information
The tunnel begins at Early Intake Reservoir on the Tuolumne River and extends approximately 19 miles west to Priest Reservoir, near the town of Groveland.
Notice of Determination
Approving Agency
State Water Resources Control Board
Approving Agency Role
Responsible Agency
Approved On
County Clerks
Mariposa, Tuolumne
Final Environmental Document Available at
A record of financing approval for the Project is available to the general public at the State Water Board, Division of Financial Assistance at 1001 I Street, 16th Floor, Sacramento, CA 95814. The Mitigated Negative Declaration is available from the Lead Agency.
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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