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evaporative losses, lake recharge rates,availability of storage in the COLs,etc. As part of the Water Balance task, Consultant will compile the treatment yields with the seasonal availability and the recharge/end use yields to develop a water balance that can estimate both volume and quality. Consultant proposes to use BluePlan-it(a customizable optimization and decision support tool)to develop the water quantity and quality balance. Task 3.5 LAVWMA Availability and Impacts ® Determine Livermore-Amador Valley Water Management Agency(LAVWMA)minimum pipeline flow and water quality requirements to meet discharge permit limits, including accounting for brine disposal. Existing LAVWMA models and data for other dischargers will be used to estimate the impact of flow and quality in the LAVWMA pipeline. Estimates of discharge quantity and quality from Tasks 3.3 and 3.4 will be used to consider regulatory impacts of discharges in meeting LAVWMA and EBDA NPDES permit requirements. Task 3.6 TM3 Draft TM 3 will summarize Tasks 3.1-3.5. Comments received on the Draft TM will be incorporated into the Draft Report. Task 4-Alternatives for Potable Reuse: Alternatives will be developed that combine source water,treatment,conveyance and end-use. Consultant will consider alternatives that both include previously identified options(from previous studies)as well as potential new options.Alternatives will be evaluated at a high level and then screened down to a short list of three alternatives to be evaluated in more detail.Conceptual-level design and costs will be developed for these three short-listed alternatives.Both economic and noneconomic considerations are anticipated to be used to compare alternatives. Task 4.1 Identify Options e Identify potable reuse options,such as groundwater injection,recharge in the COLs, surface water augmentation(COLs,Lake Del Valle,and Patterson Reservoir),direct connection to water treatment plants,and appropriate combinations. Task 4.2 Develop Evaluation Criteria;Evaluate and Screen Options e For various options, evaluate: o construction benefits(e.g., land availability,power source availability,existing facilities) and constraints(e.g.,timing of acquisition of the percolation(Chain of Lakes),approval of Lake Del Valle use for surface water augmentation by other agencies), o operational benefits(e.g.,existing trained staff)and constraints(e.g.,multiple uses of lake/s including flood control and capture of groundwater from mining activities,injection capacity limitations,etc.), o fatal flaws,and o additional information required for further analysis e Coordinate with the team working on institutional issues(separate consultant contract)to identify issues or problems that may need to be addressed for the various options. Consultant's water balance and alternatives analysis tool(B1uePlan-it)will be used for real-time scenario development of alternatives to be able to consider different configurations and to estimate water volumes, quality,costs,and impacts of each alternative.