Mokelumne Aqueducts Resiliency Project (MARP)

Project description

EBMUD is in the planning phase of the Mokelumne Aqueducts Resiliency Project (MARP). EBMUD’s Mokelumne Aqueduct System which includes the Pardee Tunnel, Mokelumne Aqueducts and Lafayette Aqueducts transports untreated water from Pardee Reservoir and the Sacramento River to EBMUD’s service area and is the primary supply for 1.4 million people in Alameda and Contra Costa Counties. The Mokelumne Aqueducts consist of three steel pipelines, with the first of the pipelines (Mokelumne Aqueduct No. 1) completed in 1929, and Mokelumne Aqueducts No. 2 and 3 completed in subsequent years. Portions of the Mokelumne Aqueducts within the Sacramento-San Joaquin Delta are at risk of failure due to earthquake and levee failure hazards. Failure of one or more of the Mokelumne Aqueducts would severely reduce the level of water service to EBMUD’s customers. To address this potential public health impact, the purpose of the Project is to improve the resiliency of the existing Mokelumne Aqueducts by replacing them in a proposed buried tunnel within the existing Mokelumne Aqueduct ROW for the 16.5 mile reach where they cross the Delta. The tunnel would be constructed from four access shafts along the alignment. Two of the existing Aqueducts would be permanently decommissioned and one would be retrofitted and kept for operational flexibility and future outages of the tunnel.  

         

Workplan and schedule

Design of the project is scheduled from 2026-2031 and the construction schedule has not yet been determined.
EBMUD will prepare an Environmental Impact Report (EIR) for this project, beginning with a Notice of Preparation (NOP). The NOP will be posted to this webpage on March 28, 2022. Written comments on the project should be submitted no later than 4:30 p.m. on April 28, 2022 to: David Rehnstrom, Manager of Water Distribution Planning at 375 Eleventh Street, MS 701, Oakland, California 94607, or, by email to mokelumne.aqueducts.resiliency@ebmud.com.

Contact

Community Affairs  
Email: joseph.voelker@ebmud.com
Phone: 510-287-2053
For after-hours assistance, please contact: 1-866-403-2683
Contractors: For bid opportunities on EBMUD projects, see Business Center.

Resources

On April 14, 2022, EBMUD held a virtual public scoping meeting to provide information on project components and the timeline for the preparation of the Environmental Impact Report (EIR) and solicited agency and community input on the project and EIR.

Presentation recording: https://youtu.be/DzIYoq2CahA