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<br />E.2 Water Rights <br />The water right information is presented in Appendix D of this report. The Company is <br />authorized to fill the reservoir, once during spring runoff, to a height of25 feet from the bottom of <br />the outlet tube, in a quantity estimated at 730 AF, per Reservoir Priority No. 38 dated April 12, 1904. <br />Based on historical operations, during times of excess runoff water, as detennined by the Water <br />Commissioner, the Company may store an additional 246 AF for a total storage of 976 AF to <br />reservoir elevation of 5014.4. A reservoir yield analysis was not performed for this study. Based <br />on the Company the reservoir will yield approximately 830 AF. <br /> <br />F. Water Quality <br />There will be no water quality impacts as a result of this project, nor will there be any new <br />water supplies developed as a part of this project for which water quality would need to be <br />addressed. Construction dewatering, process waters and diversions will be perfonned in accordance <br />with required permit conditions. <br /> <br />G. Field Investigations <br />Rocky Mountain Consultants (RMC) performed a field investigation in July 1984. The field <br />work for the study included: 1) surveying of the dam area to produce a topographic map, 2) <br />engineering and geologic reconnaissance of the dam and foundation, 3) drilling and logging of seven <br />test holes, and 4) installation of open well piezometers within the test holes. <br /> <br />Analysis for the study included: 1) laboratory testing of selected samples including gradation, <br />Atterberg limits, natural densities, moisture contents, unconfmed compressions and direct shear, 2) <br />slope stability analysis, and 3) formulating repair recommendations for the structure. The report is <br />presented in Appendix B. <br /> <br />RMC concluded that the dam is a "homogeneous" embankment constructed primarily of <br />clay. The embankment clays are medium stiff to stiff. Foundation materials consist of sandstone <br />overlain by 16 to 26 feet of soils. Soils include alluvial sands, slopewash clays and windblown <br />sands. Stability against sliding of the embankment appears to be adequate with all factors of safety <br />above 1.5. Piping and dispersive potential appears to be low except for the windblown silty sands <br /> <br />C\WORK\PROJECTSIRY AN\FEASREPORT\RY ANRPT DOC <br /> <br />8 <br /> <br />JanUllrY12,lm <br />