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<br />I. <br /> <br />I <br /> <br />I <br /> <br />SCOPE OF WORK <br /> <br />EXTREME PRECIPITATION INVESTIGATION PROJECT <br /> <br />March 1998 <br /> <br />1. REQUEST FOR A CONTRACTOR <br /> <br />Colorado Department of Natural Resources under the supervision of the Colorado Water <br />Conservation Board and the Division of Water Resources (State) is requesting a "Statement of <br />Qualifications (SOQ) for the performance of an "Extreme Precipitation Investigation" for <br />certain regions within the State of Colorado. <br /> <br />2. SUMMARY OF REQUESTED WORK <br /> <br />Using the extreme precipitation data and storm characteristics collected and presented in the <br />report entitled "Colorado Extreme Storm Precipitation Data Study" - Climatology Report #97-1 <br />dated May 1997 by Thomas B. McKee and Nolan J. Doesken, and any subsequent extreme storm <br />events, the contractor shall perform a number of detailed precipitation, climatological, <br />meteorological tasks. The ultimate project objectives are I) to develop a STATE MODEL which <br />can predict extreme rainfall amounts for a select basin above 5,000 feet MSL, 2) to present aerial <br />distribution patterns for extreme precipitation events, 3) to compare these data to existing <br />Probable Maximum Precipitation data, and 4) to develop procedures to use the new precipitation <br />data in the state's Dam Safety and Floodplain Management Programs. <br /> <br />3. BACKGROUND <br /> <br />THE ISSUE: <br />- The State Engineer's Office, for the administration of its Dam Safety Program, uses the <br />National Weather Service's Probable Maximum Precipitation (PMP) criteria, where failure ofa <br />dam could be catastrophic to the public. <br />- The Colorado Water Conservation Board, for its financing of water resource development and <br />flood control projects, needs criteria that better represent Colorado's unique hydrologic and <br />climatic conditions for basins and watersheds. These new hydrologic criteria and design <br />conditions will result in the funding of more cost-effective projects. <br /> <br />A project proposal was developed by a volunteer committee of meteorologists, hydrologists, and <br />professionals/engineers from universities, consulting firms, dam owners, and state and federal <br />agency representatives. The proposal contained the following phases and components: <br /> <br />Phase I 1. Data collection (Extreme precipitation data/studies) <br /> 2. Development of EP Database (Verification) <br /> 3. Modeling Workshops (Forum for professionals in <br /> field to reach consensus on which technology would <br /> be applicable for predicting and EP atmosphere in the <br /> mountains of Colorado.) <br />