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Joint Tri-Valley Potable Reuse Technical Feasibility Study I ES I TRI-VALLEY WATER AGENCIES <br /> Step Description Timing PRELIMINARY <br /> Consultant Cost' <br /> source waters,including purified <br /> water. <br /> Hydraulic modeling and water <br /> balance in the Lake H/I/Cope <br /> complex,incorporating <br /> COLs Hydraulic recharge rates,projected Vulcan <br /> Modeling/Water discharges,groundwater levels, 8 months $100,000-$150,000 <br /> Balance Arroyo Mocho and Arroyo <br /> Valle/SBA diversions,and <br /> potentially stormwater and <br /> purified water storage. <br /> Incorporate scenarios and <br /> results from the COLs water <br /> quality and hydraulic <br /> COL modeling/water balance <br /> Management analyses.Consider other 1246 months $200,000 <br /> Plan Update potential uses such as recreation <br /> and planned facilities such as <br /> the diversion structure/s and <br /> COLs pipeline. <br /> Subtotal $800,000-$930,000 <br /> Further Define and Implement Technically Preferred Project <br /> May be programmatic to cover <br /> all water supply alternatives but <br /> CEQA with project-specific elements 12-24 months $1,00,000-$1,500,000 <br /> for potable reuse.Can be used <br /> to help decide on location/s,end <br /> use/s. <br /> Assess regulatory impacts on <br /> EBDA discharge. <br /> Concentrate <br /> Management Determine the best concentrate 6-8 months $300,000 <br /> Investigation management approach given <br /> mixing of effluent and <br /> concentrate. <br /> Quantitative Develop a QMRA to predict the 6 months $40,000 <br /> Microbial Risk risk of infection,in this case <br /> c coin..new F'NAL MAY 201$, 13 <br />