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I I II , lit II I I I I II I I I I - I I I I I I -28- the existing spillway structure to provide for erosion protection and shaping and lining of the approach channel to minimize uplift pressures on the struc- ture during design discharge conditions may also be required. USDA Forest Service Requirements - Sheriff Reservoir is located on Routt National Forest property. A special-use permit will be required from the Forest Service in order to construct the required modifications. The feasibi- lity level designs described in the preceding sections have been discussed to Mr. James A. Jaminet, Forester for the Yampa Ranger District; and with Mr. Keith Bakeman, Dam Safety Engineering for the Forest Service in Denver. The following is a summary of the major concerns and requirements of the Forest Service that have been incorporated into the feasibility level designs, cost estimates, and project schedule. A letter documenting Mr. Jaminet's comments is given in Appendix F. 1. An Environmental Disclosure (Assessment) will likely be required unless other projects similar in environmental effect to that created by construction of modifications to Sheriff Reservoir have been recently completed, establishing a precedent. If an existing prece- dent can be identified, the Forest Service may be able to issue a Categorical Exclusion for the project. If required, the Forest Service will complete the Environmental Disclosure upon submission of a special use application by the Town of Oak Creek. Provided the Special Use Application is submitted by August 1987, the Environmental Disclosure and Special Use Permit would be completed and issued by January 1988. 2. Access road improvement is viewed as an essential part of the work. Temporary improvement for purposes of this project would be approved and included in the Special Use Permit. The Forest Service has iden- tified the need to undertake major access road improvement and has submitted a budget request to the USDA Capital Investment Program. Currently, it is envisioned that the required funds for road improve- ment would be available, if approved for construction, in 1989. However, as noted in the letter in Appendix F, and as discussed with Mr. Jaminet during subsequent telephone conversations, he has requested the Capital Investment Program to determine if the road construction project can be moved to an earlier date. If the Forest Service can complete the road improvements prior to the summer of 1988 construction of Sheriff Reservoir modifications, a reduction of the mobilization costs, which included provisions for access road improvements, would be in order. 3. Construction staging in the area indicated on Figure 9 appears suitable. 4. Disposal of excess excavated materials in the right abutment area currently void of vegetation would be approved. The Forest Service would like to see the entire right abutment area, which is currently void of vegetation, reclaimed following disposal of the excess excavation.