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Docusign Envelope ID:3EDD0960-FFF6-43E2-8E49-1A7B2008A238 <br /> PLUMMER <br /> 9/12/2024 <br /> b. Evaluate the feasibility of a surface discharge of concentrate <br /> i. Define receiving water quality requirements <br /> ii. Define any additional treatment needed to meet receiving water quality <br /> goals <br /> c. Evaluate other strategies for disposal, as needed, which may include: <br /> i. Deep well injection <br /> ii. Evaporation ponds/mechanical evaporators <br /> iii. Additional advanced treatment to reduce volume of concentrate stream <br /> or achieve zero liquid discharge <br /> (2) Define strategies for discharge treatment or disposal of other waste-stream residuals <br /> generated by each treatment scheme. <br /> 5f. Development of Reclamation Project Alternatives with Cost Estimates <br /> (1) Identify up to 12 potential reclamation alternatives to be considered. Potential <br /> alternatives will be discussed in Workshop #1. <br /> (2) Using conceptual-level information and costs, perform an initial screening evaluation to <br /> identify no more than five alternatives to be considered for detailed evaluation. <br /> Alternatives to be considered may include expansion of the centralized nonpotable <br /> reclaimed water system, development of satellite treatment and distribution systems, <br /> direct potable reuse, or a combination of these options. When data are available, the <br /> TWDB's unified costing model (UCM) will be used to develop conceptual opinions of <br /> probable cost. For cost data not available in the UCM, cost opinions will be based on <br /> unit costs from available industry data (e.g. $/gallon treated). Maps and descriptions of <br /> required infrastructure will be prepared for each alternative. <br /> (3) Perform a detailed evaluation of each of the selected alternatives, including <br /> development of treatment process flow diagrams, assessment of regulatory and <br /> implementation issues, and other non-cost factors. <br /> (4) Develop detailed cost estimates for the selected alternatives, including capital costs, <br /> annual operation, maintenance and replacement costs, life cycle costs and unit cost of <br /> water in terms of dollars per acre-foot and dollars per thousand gallons. <br /> Task 6: Economic Analysis <br /> This task will summarize results of the cost and benefit analysis. Costs for the reuse alternatives <br /> will be developed in Task 4f. Costs for the non-reuse alternatives will be developed in Task 4c. <br /> 6a. Describe Existing and Future Condition <br /> Summarize the water supply conditions and justification of need, as developed in Task 3. <br /> Describe projected future water supply and economic impacts with and without the <br /> recommended project. <br /> 6b. Prepare Cost Comparison <br /> (1) Compare cost of project alternatives developed in Tasks 4c and 4f.The basis for this <br /> comparison will be <br /> 8 <br />