Gunnison - Overland Reservoir Dam Expansion Restoration_Full Application

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Water Supply Reserve Account - Grant Application Form - ([l)c \!t)iJcrlUItl:J 1.Ditcl) ,,\: 3Rc5criJoir <!Co. Form Revised Octo her 2006 5.(Continued.) The portion of the above work that may be possible to perform in late 2007 includes part of the design of fisheries mitigations and designation of timber removal. c. The Forest Service will make a technical review of the proposed project studies and plans. It is possible that this review will take place in late 2007. d. A final Special Use Permit will be issued which contains the conditions for construction and long-term use and maintenance. This permit will not be issued until all technical issues and other permitting issues are resolved. Therefore, it is possible that this final permit processing will not occur until late 2007. 3 Delta County does not have a requirement for special use permits when the project is located in a National Forest. However, issues such as road use will have to be addressed with the County. This work may take place during late summer or fall of 2007. The above discussion and attached cost estimates include anticipated permits and engineering required for starting construction. They do not include engineering costs, oversight by the Forest Service or other construction related cost items. It is important to note that, at this stage of the project, it is impossible to anticipate permitting costs with a very high degree of certainty. There may be other costs or additional permits that are not included in this description or the attached cost estimate. A contingency amount of $6000 is included with the cost itemization to cover these uncertainties. The Forest Service has recently instituted a cost recovery program whereby they charge the permittee for their services involved with the permit process. The Overland permit was initiated prior to starting of that program. That means that the cost for the initial field studies and initial scoping was absorbed by the Forest Service, but the costs for further services will be charged to the owner. Costs expected to be incurred by the Forest Service are included in the cost estimate. Other than final permits, deliverables will include progress reports issued at the intervals indicated on the attached schedule. To date, the Overland Ditch and Reservoir Company has been satisfied with making project decisions based on existing water supply information. However that information is dated and incomplete. It has become apparent that updating the yield information will be beneficial in pursuing further finding options. Therefore, the cost estimate includes conducting a reservoir yield investigation. 1. Stream flow data will be collected from USGS gaging stations. Nearby streams that may provide applicable data include Leroux Creek (period of record 1936-1969) Cow Creek (period of record 1960-1969), Leroux Creek at Hotchkiss (period of record 1976-1996), Surface Creek, Hubbard Creek, Terror Creek, Buzzard Creek and Muddy Creek. Any flow pattern correlation will need to be adjusted for storage effects and other applicable diversions. During filling periods, storage adjustment will consist of reduction of the effective drainage area. During spilling periods, the dampening effects of reservoir spills will need to be accounted for by reducing the base flow. If the ratio of total storage to total drainage basin area is similar for two basins, no adjustment will be necessary. Available data from prior studies will be used as much as possible. 8