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<br />II <br />I <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />embankment is not necessary. <br /> <br />The existing 20-inch outlet pipe will be extended downstream approximately 50-feet <br />with the outfall protected by riprap. The inlet structure which houses the <br />valves to the outlet pipes will be raised to match the new dam crest. A catwalk <br />will be provided for access to the valves. <br /> <br />The existing emergency spillway at the south end of the dam will be widened to <br />have a 42-foot bottom width. The spillway will have 2H:1V sideslopes and will be <br />protected from erosion by riprap. The crest of the new spillway will be set at <br />the original elevation of 10,392 feet which gives the city its allocated water <br />storage of about 203 acre-feet. This is the historic spillway elevation prior to <br />the lowering of the crest as required by the State Engineer in 1984. Approximately <br />100 feet of 1 imited channel shaping will be necessary downstream of the spillway <br />crest to provide capacity for the inflow design flood (1/2 of the PMF) and to <br />keep stormwater from discharging onto the downstream face of the dam. A prefab- <br />ricated footbridge will span the gO-foot top width of the spillway to provide <br />access to the dam crest and outlet works. <br /> <br />In addition to the required modifications proposed for Victor Dam No.2, the <br />access road leading to the damsite will have to be improved for construction <br />purposes. Currently the road is unimproved and very narrow having steep grades, <br />large ruts, and rocks. Large pieces of construction equipment will be required <br />to complete the modifications to the dam. While most of the equipment will be 4- <br />wheel drive or track-driven, it is envisioned that some of the larger rocks will <br />have to be removed and road will have to be regraded in some areas to eliminate <br />the steeper slopes. Costs of this item is included in the lump sum for mobiliza- <br />tion. <br /> <br />The preliminary design recommended for the Victor No.2 Dam rehabilitation <br />provides an embankment with the stability to meet current design standards. These <br />improvements provide an emergency spillway which is hydrologically adequate for <br />1/2 of the PMF. In addition, the proposed improvements will provide the facility <br />with several components which are currently lacking such as access to the outlet <br />works control gates and access over the emergency spillway. <br /> <br />40 <br />