17 - Laserfiche WebLink

Task Order #005: Tri-Valley Potable Reuse Feasibility Study Background The Water Supply Evaluation Update (WSE Update) completed by Zone 7 Water Agency (Zone 7) in February 2016 underscored the need to pursue water supply options to enhance long-term water supply reliability for the Livermore-Amador Valley. Potential future water supply options identified in the WSE Update include the California WaterFix, desalination,and potable reuse. For potable reuse, a high-level review (HDR, 2016) considered various options including groundwater injection,recharge in the Chain of Lakes (COLs), surface water augmentation (COLs, Lake Del Valle, and Patterson Reservoir),and direct connection to the water transmission system. On February 11, 2016, elected representatives at the Joint Liaison Committee Meeting/Water Policy Roundtable—which included elected representatives from the cities of Dublin, Livermore, Pleasanton, San Ramon, Dublin San Ramon Services District (DSRSD), and Zone 7—discussed and supported a more detailed study of potable reuse. Overview of Task Order The primary goals of the Potable Reuse Feasibility Study are to evaluate the feasibility of potable reuse for the Valley; to identify the most promising options based on technical, financial,and regulatory considerations; and,assuming that potable reuse is found to be feasible,to recommend next steps for the agencies.The options to be further evaluated include groundwater recharge/injection, surface water augmentation,and connection upstream of the Zone 7 WTPs; direct connection to the water transmission system is not being considered at this time based on input from the elected representatives at the February 2016 meeting.The findings and recommendations from the study will be presented to the governing bodies of the Tri-Valley water agencies for their consideration and potential actions.The feasibility study will be coordinated closely with parallel efforts on public outreach and an evaluation of the relevant institutional matters. This Task Order covers the cost of the consulting services to be shared among the partners. Through a Request for Proposal process, Carollo Engineers (Consultant)was selected by the partners as most qualified to perform the feasibility study.The total budget of the consulting services for the study is $755, 000.With a contingency of$95,000 (13%),the not-to-exceed amount for the study is $850,000.The scope of work,work plan summary, and detailed budget for the consulting services are included in Attachment A. Partner Responsibilities Zone 7 and the retailers have formed a Steering Committee with representatives from all the agencies to oversee policy issues related to the study. Similarly,a Project Management Committee consisting of technical staff has been formed to oversee the technical work,with a designated project manager from Zone 7. Zone 7 was also selected to serve as the Lead Agency or contract administrator for consulting services.There will be separate efforts to