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2. Participate in one-half day workshop. <br /> 9.4 Assumptions <br /> 1. Existing hydrologic modeling and system operations modeling tools are available to simulate the <br /> runoff and operations to predict future safe yield. <br /> 2. Climate change projections are now available from the Fifth Assessment Report of the <br /> Intergovernmental Panel on Climate Change. Presumably these updated projections include <br /> some improvement in projection accuracy. <br /> 3. The City will lead any necessary coordination with the Snohomish County Public Utility District, <br /> Cities of Seattle and Tacoma and/or the Central Puget Sound Forum. <br /> 4. HDR will be able to enter into a contract with UW-CIG or another suitable subconsultant to <br /> provide necessary services under this task within the cost level indicated. If this assumption <br /> proves to be invalid, then HDR reserves the right to adjust the task cost to reflect HDR services <br /> instead of the subconsultant. <br /> 9.5 Deliverables <br /> 1. Updated Spada watershed runoff estimates from three projections of year 2050 and year 2100 <br /> conditions. <br /> 2. Updated reservoir level, hydropower generation, water supply delivery, and streamflow <br /> projections for three operational scenarios, combined with three climate projections for year 2050 <br /> and 2100 conditions. <br /> 3. Yield analysis workshop agenda and notes outlining the analysis of updated runoff projections <br /> and review of recent regional yield studies. <br /> 4. Yield analysis results workshop summary presentation and handouts. <br /> 5. Technical memorandum documenting the analysis of updated runoff projections, comparisons <br /> with 2007 projections, and conclusions regarding changes in safe yield. <br /> Everett Comprehensive Water Plan June 12, 2019 <br /> Exhibit A—Scope of Services Page 14 of 30 <br />