May 2, 2022 (last updated)
Mitigation Measure 1: Transfer-Bethany Pipeline
CCWD was conditionally awarded funding for this project as part of the Los Vaqueros Reservoir Expansion Project thorough the Water Storage Investment Program. The Notice of Determination was filed in May 2020. Permitting and preliminary design is underway and is expected to be completed by late 2022.
Mitigation Measure 2 and 5: Zone 7-SFPUC/EBMUD Intertie
The intertie is in conceptual phase, and the next steps include discussions between Zone 7 and EBMUD/SFPUC to reach an agreement-in-principle and to proceed with a pipeline alignment study and preliminary design. A 'reliability intertie' was included in Zone 7's FY 18/19 Ten-Year Water System CIP, with current projected in-service date by 2029. With external funding, this project could potentially be accelerated.
Mitigation Measure 3a: ACWD-SFPUC Intertie and Local Supply
This project is at the conceptual level. There are no agreements in place or permits, and this project is not in the ACWD CIP. ACWD together with Union Sanitary District and SFPUC are presently revisiting elements of this concept as part of the Purified Water Feasibility Evaluation.
Mitigation Measure 3b: ACWD-SFPUC Intertie and Indirect Potable Reuse (IPR)
The initial IPR Feasibility study is complete. There are no agreements in place, and no permits. ACWD has this project partially funded in the CIP and further studies have been scoped with SFPUC and Union Sanitary District. This project would benefit from funding for needed near-term studies for the development and distribution of additional water supplies. ACWD, SFPUC, and Union Sanitary District are currently working on the Purified Water Feasibility Evaluation which is focused on feasibility, regulatory and permitting requirements, and limnological studies at Quarry Lakes.
Mitigation Measure 4: West Side SFPUC-VW Intertie
Planning for the project has not yet commenced.
Mitigation Measure 6: MMWD-EBMUD Intertie
MMWD is presently evaluating this project alongside a number of other water supply alternatives as part of the Strategic Water Supply Assessment.
Mitigation Measure 7: Los Vaqueros Reservoir Expansion
This project was conditionally awarded $477 million in funding for this project through the Water Storage Improvement Program. CCWD, together with project partners, have formed the t Los Vaqueros Reservoir Joint Powers Authority to finance the project. Congress has appropriated $64 million for the project to date. The Notice of Determination was filed May 2020. Permitting and preliminary design is underway and expected to be completed by late 2022.
Mitigation Measure 8: Walnut Creek Water Treatment Plant Pretreatment Facility
This measure allows EBMUD to treat water from the Sacramento River, Los Vaqueros Reservoir, and other sources, enabling EBMUD to deliver supplies to neighboring water agencies. Planning and pre-design activities are underway for this project. Currently, EBMUD is planning to update the plant in phases. Half of the plant will initially be upgraded to full treatment capability, providing up to 80 MGD. A planned future phase would upgrade the other half of the plant, allowing full treatment up 160 MGD, enough to meet EBMUD’s long-term needs.
Mitigation Measure 9: Regional Desalination Plant
Several agencies have expressed interest in potentially moving forward with the regional desalination project. Several studies and a pilot scale test have been conducted between 2003-2013. With external funding support, environmental review, permitting and design can be initiated. Private funds such as a P3 approach, can be leveraged in addition to public funding as options for this project. Review of water rights and feasibility of exchanges is currently underway. This project may be envisioned in conjunction with the LV Expansion (Measure 7) by some partner agencies.
Mitigation Measure 10: Silicon Valley Advanced Water Purification Center (SVAWPC)
VW continues to collaborate with the Cities of San Jose and Santa Clara in the production of advanced purified water from source water received from the San Jose-Santa Clara Regional Wastewater Facility (RWF). The SVAWPC produces up to 8 MGD of purified water to increase the marketability of the existing recycled water supply, conduct engineering studies, and provide a forum for public education and outreach. VW continues to discuss opportunities to develop additional potable reuse supply with its countywide project partners (i.e. Gilroy, Morgan Hill, San Jose/Santa Clara, Sunnyvale); following up on the VW MOUs with Cites of Palo Alto, Mountain View, Sunnyvale, and SFPUC; as exemplified by its 2020 partnership agreement with Mountain View/Palo Alto to develop potable water reuse.
Mitigation Measure 11: SF-Peninsula Regional PureWater (SPRP)
The SFPUC and BAWSCA along with other non-BARR partners including Redwood City, Mid-Peninsula, Cal Water, the City of San Mateo, and Silicon Valley Clean Water are working jointly on this purified water project. SPRP could provide up to 12 mgd of purified water for potable reuse, with an initial IPR phase of 6-8 mgd being provided through reservoir water augmentation at Crystal Springs Reservoir. The second phase of the project would allow for an additional 4-6 mgd direct potable reuse through treated drinking water augmentation for local use in the Peninsula. Early studies analyzed the feasibility of treatment and distribution and provided feasible scenarios for institutional structure and costs. The partners intend to apply for external funding for design and other site-specific studies.
Mitigation Measure 12: Joint Tri-Valley Potable Reuse Feasibility Study
This alternative water supply is one of the options being considered by Zone 7. A feasibility study was completed in 2018, concluding that there are several feasible options. Additional studies will be ongoing over the next 2-3 years to determine the need for potable reuse as a supply alternative, and to narrow down the best potable reuse option/s for the Tri-Valley. External funding will lower the unit cost of this water supply and may make it a more attractive water supply option than other options. The feasibility study can be found here: https://www.dropbox.com/s/pxcyajryga5j61s/potable_reuse_feasibility_study_May-2018.pdf?dl=0
Mitigation Measure 13: Regional Advanced Metering Infrastructure (AMI) Feasibility Assessment
All eight BARR agencies have AMI as an element of meeting future conservation goals. Some agencies are still working on the business case (e.g., replace all meters quickly versus gradually over time) while others have already established a full deployment schedule. Valley Water has made significant progress working with water retailers in Santa Clara County to advance AMI and has three water retailers predominately using AMI. ACWD’s Proof of Concept phase of its AMI program was completed in 2021 and full AMI deployment is scheduled for completion by December 2023. The SFPUC started installation of AMI in 2010, and AMI is now fully deployed for over 180,000 retail and wholesale customers.
Mitigation Measure 14: Del Valle Reservoir Water Supply Storage Project
“Del Valle Reservoir Water Supply Storage Expansion Project” has been expanded. The original project envisioned modernizing the flood management rules at Del Valle Reservoir to use a greater portion of existing reservoir capacity to capture additional local supply and store additional emergency water supply while maintaining necessary flood protection. Specifically, the concept included a variety of scenarios based on reoperation of the existing flood pool using forecast informed reservoir operations (FIRO). In 2018, the SBA Contractors completed a high-level evaluation of the feasibility of modernizing flood rules, expanding emergency storage, and replacing/relocating East Bay Regional Parks District (EBRPD) facilities, while also evaluating an additional project that would modify existing EBRPD facilities to accommodate lake lowering to capture more local run-off. Although the 2018 feasibility study identified substantial benefits from the original reoperation scenarios with FIRO, the workgroup recognized that the Department of Water Resources (DWR), the US Army Corps of Engineers (USACE), and other governmental bodies would need to become heavily involved to advance these concepts, and therefore recommended the lake lowering project instead. Recently, however, DWR and USACE have taken a more active role. In October 2021, DWR requested a “minor deviation” to the water control manual at Del Valle Reservoir. In December 2021, upon approval from USACE, DWR implemented a reoperation scenario using FIRO at Del Valle Reservoir that allowed DWR to increase temporary conservation pool storage up to approximately 3,850 AF at a lake level of 707.06 ft. To avoid flooding any EBRPD facilities, however, DWR limited the additional storage in the reservoir to below 1,625 AF or an operational level target of 704 ft. Lastly, several of the BARR agencies are participating in a consortium to implement a regional x-band radar system that would support an expanded Forecast Informed Reservoir Operation program.
Mitigation Measure 15: Bay Area Shared Water Access Program (Previously called Regional Water Market)
EBMUD, acting on behalf of the BARR partners, successfully applied for a $400,000 grant from the U.S. Bureau of Reclamation to provide funding for this project. EBMUD signed the grant agreement on September 20, 2018. Three pilot water transfers were completed by the BARR Partners in 2021. A strategy report is under development with input from the Bay Area SWAP Stakeholder Task Force to establish a framework and path forward to support regional access to supplies and is anticipated to be completed by March 2023.
ACWD - Alameda County Water District
BAWSCA - Bay Area Water Supply and Conservation Agency
CCWD - Contra Costa Water District
EBMUD - East Bay Municipal Utility District
MMWD - Marin Municipal Water District
SFPUC - San Francisco Public Utilities Commission
SWAP - Shared Water Access Program
VW - Valley Water
Zone 7 - Zone 7 Water Agency