14 ATTACHMENT 1 EXHIBIT A - Laserfiche WebLink

Chapter 6 Water Supply Characterization 6.2.8.4 Sites Reservoir THE CITY OF PL£ASANTON Sites Reservoir is a proposed new 1,500,000 AF off -stream storage reservoir in northern California near Maxwell. Sacramento River flows will be diverted during excess flow periods and stored in the off -stream reservoir and released for use in the drier periods. Shown on Figure 6-8, Sites Reservoir aims to supplement and optimize use of the State's existing storage and conveyance systems such as the CVP's Shasta Reservoir and the SWP's Oroville Reservoir, which collects much of the water for the SWP system. The participants in the Sites Reservoir project include 31 entities, including Zone 7 and several other SWP contractors. Sites Reservoir is currently undergoing environmental planning and permitting and is expected to provide approximately 240 TAF per year11 of additional deliveries on average to participating agencies under existing conditions. Operations modeling will continue to be refined over the next few years to reflect a range of permit and operational conditions, which will define the ultimate yield. For example, it is uncertain at this time whether the delivery of Sites Reservoir releases using SWP facilities in the Delta could result in a "carriage loss," which would reduce the net yield to Zone 7 and other SWP contractors. Full operation of the Sites Reservoir is estimated to start by 2029 following environmental planning, permitting, and construction. Sites Reservoir is expected to provide water supply, environmental, flood, and recreational benefits. Consequently, Sites Reservoir was conditionally awarded $816 million from the California Water Commission for ecosystem, recreation, and flood control benefits under Proposition 1. The US Bureau of Reclamation (Reclamation) may also invest in Sites Reservoir under the Water Infrastructure Improvements for the Nation Act and recently transmitted a final Federal Feasibility Report to Congress for the project. The Sites Project Authority (Authority) was formed on August 26, 2010 as a joint powers authority to pursue the development and construction of Sites Reservoir. The Authority is governed by a 12 -member Board of Directors representing Sacramento Valley leadership in government and water management. Water agencies across California—including Zone 7—that are investing in the project are members of the Sites Reservoir Project Committee, which oversees the planning efforts and provides recommendations to the Authority. 11 Sites Project Management Team, 2020. Sites Project Value Planning Alternatives Appraisal Report. htti3s://3hm5en24txviD2e4cxvxaklbs-wiDenizine.netdna-ssl.com/wiD-content/uploads/2020/04/INT-REP-Value-PlanninF-- Appraisal-Report-FinaIV2Comi3ressed.iDdf WEST YOST N-680-60-20-04-WP-R-680-2020UWMP 6-30 City of Pleasanton 2020 Urban Water Management Plan May 2021