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<br />03/27/1995 13:11 <br /> <br />71 92753051 <br /> <br />HRM <br /> <br />PAGE 03 <br /> <br />Ms. Honey R. Moschetti <br /> <br />-3- <br /> <br />February 6, 1995 <br /> <br />have not included any costs in our proposal to provide field-surveyed cross sections. If field <br />surveys are required, we will work with the Reservoir Company to develop a cost-effective <br />survey program using local surveyors.. <br /> <br />As with the preliminary IDA, the detailed IDA will be perfonned using the BEe-! and HEC-2 <br />computer models and spreadsheet applications developed by GEl. Our analysis will include a <br />parametric evaluation of a reasonable range of breach parameters, and will identify a threshold <br />flood. Dam failure at the threshold flood will result in downstream flooding depths and velocities <br />that are at the threshold of the incremental damage criteria defined in the SEO regulations. The <br />selection of the threshold flood, based on the IDA results, will provide the bac;is for our proposed <br />IDP for future dam safety analysis and designs. <br /> <br />Task 4 . Draft Report. After the IDA analysis is complete, GEl will prepare a draft report <br />which documents the results of our fmdings and IDF recommendations.. In accordance with SED <br />regulations, the report will document all analysis assumptions and illustrate a downstream channel <br />plan view, profile, and representative cross sections. Computer print-outs will also be provided <br />for SEO review. The draft report will be submitted to the Denver dam safety branch for review <br />and approval. A hrief meeting with the SED to review the results of the analysis may be held <br />prior (0 their review. <br /> <br />Task S . State Engineer's Office Review. State regulations allow the SEO up to six months <br />for review of items submitted for approval. The actual review time required by the SEO is <br />dependant on the SED design review staff work load. Our experience has been that the SEO <br />review is typically completed within a couple of months. GEl will be available to provide <br />clarifications and answer any SEO questions during the review period. If necessary we will have <br />an additional meeting to discuss the results of the SEO review comments. <br /> <br />Task 6 - Final Report. When the SED review is completed, we will modify the draft report as <br />needed to resolve their comments and prepare our final report. We will submit a copy of the <br />final repon to the SED on the Reservoir Company's behalf, following your acceptance of the <br />report and its conclusions. <br /> <br />SCHEDULE <br /> <br />We can complete the preliminary IDA evaluation within three weeks of your authorization to <br />proceed.. The detailed IDA analysis and draft report can be completed within six weeks after the <br />preliminary evaluation, excluding any time for field survey of cross sections (if needed) and SED <br />review. <br /> <br />BUDGET <br /> <br />If the detailed IDA is not completed as a result of tile preliminary analysis, we will perform <br />Tasks 1 and 2 of the scope of work described above for a not-to-exceed cost of $6.000. including <br /> <br />"lA_~AI..IDA <br />