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1 \ Progress on SB-74 Documentation/Coordination of Resource Data bv Hvdrosphere. Inc.: tI Hydrosphere is currently completing work on the water supply infrastructure inventory, groundwater recharge, conjunctive use, and opportunity assessment portions of the study. They are also commencing work on a basin-wide computer illustration tool showing impacts of various water supply, population growth, infrastructure, and water use scenarios. Their schedule for completion of all project tasks is early August. Progress on the State Engineer's Office Denver Basin Groundwater Model: The State Engineer's Office has completed the conversion -of the steady-state groundwater model to the transient model. The hydraulic head predicted by the steady- state model becomes the starting head conditions for the transient model. The transient model requires additional input including storage factors, hydraulic conductivity and the elevations of each groundwater layer. The transient model successfully simulated a 700 year period without any pumping which shows the model is stable. The final water levels from the 700 year simulation are used as the starting levels for transient runs using historical pumping stresses. The transient model runs are currently being completed and analyzed by the SEO. . Peer Review GrouP Meetings Held: The Technical Peer Review Group and the General Peer Review held their third meetings June 23, 1997. HRS, Inc., Hydrosphere, Inc., and the State Engineer's Office presented task information completed to date followed by a review by both groups. The Preliminary Draft Report was also submitted to both groups for their review. Written review comments will be submitted by each group for inclusion in the final S8 96-74 report. The final meeting of the two peer review groups is scheduled for late August after submittal of the Draft Final Report. Final Studv Schedule Completion of the Draft Final Report is scheduled for August. Submittal of the Final Report to the Special Water Committee is scheduled for September. .