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JOINTLY FUNDED POTABLE REUSE STUDIES AND OTHER EFFORTS* <br /> (as of January 13,2021) <br /> TASK DESCRIPTION ESTIMATED <br /> CONSULTANT <br /> COST <br /> Desktop GW Contaminant A consultant will evauate the potential for groundwater contaminant $100,000 <br /> Mobilization Study mobilization if purified water is introduced to groundwater,and <br /> identify potential mitigation strategies.This could involve sampling of <br /> native groundwater and prediction of the water quality of purified <br /> water,geochemical analysis of soil samples,and evaluation of existing <br /> groundwater quality and well operations data.A desktop geochemical <br /> model (e.g.,using Geochemist's Workbench software)will be used. <br /> Groundwater Building on the results of the desktop study,a consultant will $400,000 <br /> Investigations(e.g., complete field and laboratory studies as warranted to better <br /> leaching study,tracer characterize the potential for contaminant mobilization and <br /> study) characterize the suitability of various locations for the siting of <br /> injection wells.Core samples will be collected from the groundwater <br /> basin and laboratory experiments will be conducted.A tracer study to <br /> evaluate travel times may also be completed. <br /> Injection Well Siting Study A consultant will guide site selection for potential injection wells $100,000 <br /> through a detailed analysis of the groundwater basin's hydrogeology, <br /> expected travel time to production wells,infrastructure proximity and <br /> availability,land area to support construction and operation of the <br /> injection wellfield/s,optimization of Zone 7's salt management <br /> strategies,impacts to delivered water quality,etc.This will be <br /> coordinated with other related efforts(e.g.,Contaminant Mobilization <br /> Study and Zone 7's Well Implmentation Plan Update). <br /> Communications A consultant will develop a strategic plan for consistent regional $300,000 <br /> communications on issues related to Tri-Valley water supply reliability, <br /> including the evaluation of options such as potable reuse.The <br /> consultant would also provide support in developing the appropriate <br /> materials,coordinating efforts amongst retailer and Zone 7 <br /> communications staff,conducting workshops,and other related <br /> efforts as-needed. <br /> Independent Advisory A consultant will convene and facilitate a committee comprising $100,000 <br /> Panel technical,regulatory,and environmental experts in the area of <br /> potable reuse to address questions regarding project feasibility and <br /> optimization as well as addressing public concerns regarding safety <br /> etc.This body would provide an unbiased perspective,and would <br /> provide recommendations on next steps for the project after various <br /> efforts are completed.The budget will also cover the participation of <br /> panelists(e.g.,travel). <br /> Other Efforts(e.g., This item covers other efforts necessary to advance potable reuse, $100,000 <br /> institutional analysis, including tracking of grant opportunities and preparation of grant <br /> grants,etc.) materials,institutional analysis to identify and evaluate potential <br /> arrangements among the agencies,etc. <br /> TOTAL $1,100,000 <br /> *Scope and costs may be modified based on discussions with consultants and advice from the Independent Advisory Panel. <br /> Page 2 of 2 <br />