Pacific Tunnel Rehabilitation

Summary

SCH Number
2020040007
Lead Agency
El Dorado Irrigation District
Document Title
Pacific Tunnel Rehabilitation
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Natural Resources (NR); Timber Production Zone (TPZ) and Forest Resource - 160 Acres (FR-160)
Document Description
The Pacific Tunnel Rehabilitation Project (Project) consists of a complete replacement of the upstream and downstream portals and replacement of the existing timber invert and timber sidewalls within the existing canal tunnel using air-placed concrete. The Pacific Tunnel is part of the El Dorado Irrigation District’s (EID, District) El Dorado Hydroelectric Project (FERC Project No. 184) and conveys water between two open sections of the El Dorado Canal. Construction related to the tunnel would include removal of the timber sidewalls, clearing of the invert, and installation of self-consolidating concrete to the final invert level to fill voids and uneven surfaces in the floor of the tunnel. Rock anchors would be installed along the floor and sidewalls of the tunnel and steel rebar and welded wire-mesh would be tied to the rock anchors to reinforce the new concrete floor and sidewalls. Air-placed concrete would be applied over the rock anchors and steel reinforcements and would form the new interior surface of the tunnel. The existing timber tunnel support sets would remain in place. Road improvements would be necessary to provide construction access. These improvements would include minor surface grading to address rutting and/or potholing within the existing footprint of Park Creek Road and the portion of the Canal Access Road between Park Creek Road and Tunnel Access Road. To allow for construction access, approximately 1,200 feet of Tunnel Access Road between Canal Access Road and the tunnel site would require re-alignment and grading to provide an even slope with a 12-foot wide cross-section and a compacted subgrade

Contact Information

Name
Michael Baron
Agency Name
El Dorado Irrigation District
Contact Types
Lead/Public Agency

Name
Agency Name
El Dorado Irrigation District
Contact Types
Project Applicant

Location

Cities
Pollock Pines
Counties
El Dorado
Regions
Unincorporated
Cross Streets
Sly Park Road/ Park Creek Road
Zip
95667
Total Acres
14
State Highways
50
Waterways
South Fork American River
Township
11N
Range
13E
Section
32-34
Base
Sly Park

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 3 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Stewardship Council, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Department of Toxic Substances Control (DTSC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
California Department of Toxic Substances Control (DTSC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Water Facilities (Canal Tunnel)
Local Actions
Site Plan, Other
Project Issues
Biological Resources, Cultural Resources, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Wildfire

Attachments

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