First Aqueduct Treated Water Tunnels Rehabilitation

Summary

SCH Number
2021100275
Lead Agency
San Diego County Water Authority
Document Title
First Aqueduct Treated Water Tunnels Rehabilitation
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
General Plan: Rural Lands (RL-20) and Semi-Rural Residential (SR-4); Zoning: Agriculture (A70)
Document Description
The Water Authority has determined that rehabilitation of three existing treated water tunnels is required to prevent additional structure deterioration and ensure system reliability for continued delivery of drinking water to its member agencies. The project entails maintenance, improvement, and replacement of existing First Aqueduct infrastructure, including segments of three treated water tunnels and the bifurcation structures positioned at the upstream and downstream ends of each tunnel. The project would also develop new access manways along the tunnels to improve access into the tunnels for inspection and maintenance. No changes to the existing water supply or capacity would occur.

Contact Information

Name
Sean Paver
Agency Name
San Diego County Water Authority
Contact Types
Lead/Public Agency

Location

Cities
Escondido, Valley Center
Counties
San Diego
Regions
Citywide
Cross Streets
Couser Canyon Road, Mystery Mountain Road, N. Broadway
Zip
see below
Total Acres
14.8
Other Information
Zip Codes: 92082, 92026

Notice of Completion

State Review Period Start
State Review Period End
Development Types
Water Facilities (Existing facility rehabilitation (EFR))(Type EFR, MGD 0.000001)
Local Actions
Construction Contract
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Soil Erosion; Forest Land/Fire Hazard; Water Supply/Groundwater
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, California Department of Transportation, District 11 (DOT)
Reviewing Agency Comments
California Department of Transportation, District 11 (DOT)

Attachments

Notice of Completion [NOC] Transmittal form

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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