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Fish Creek Reservoir Expansion EIS ~;:;$";::.~~<<&:::>.~;::~:::;..:%.,,%~.;7.-::;:mAA~:::W;:;:::::$m::::::::::;.~;::,:<<;r::;&'W.:;.:.X;:."%~w....w~~m~:::;:;$~.;W'~:.=w~'W~;:;-::::;&:::::~B"':t::'V:{.>>23~~;$3:;::::':: . Road Corridor Option 3 would be constructed along the expanded shoreline adjacent to an open meadow. It would disturb approximately 0.80 acres of land, 0.48 acres of which would be wetlands. A detailed discussion of impacts to wetlands is presented in Section 4.5, Wetlands. 4.10.2.3 Alternetive C . Smeller R..ervoir Expension The impacts associated with Alternative C would be generally the same as those associated with Alternative B. It is possible that less equipment, and thus less vehicles, would be required for a smaller reservoir expansion. It is assumed, however, that the majority of the increases in traffic associated with Alternative B would also occur under Alternative C. Thus, the impacts to the condition of the West Route and the increases in the probabiljty of an accident that are associated with Alternative B, would also occur if Alternative C is implemented. Funhermore, a.smaller reservoir expansion would still inundate a portion of FDR 310.2. Road alternatives to replace this portion of FDR 310.2 would be identical to those mentioned above. 4.10.3 Cumulative Impacts Cumulative impacts to FDR 60 and FDR 310 could occur as a result of the incremental effects of: . Normal traffic levels . Increases in traffic due to increases in tourism . The addition of heavy equipment and supply vehicles using the roads during the mobilization and construction periods of the proposed reservoir expansion It is anticipated, however, that tbe majority of transponation-related impacts associated with an expansion of Fish Creek Reservoir would occur as a direct result of the project itself. To a small degree, the aforementioned impacts to FDR 60 and FDR 310 could be augmented by the cumulative effects of tourist traffic combined with construction-related traffic, but potential increases due to tourist traffic should be negligible. 4.10.4 Mitigation and Enhancements Summary Due to the impacts to transportation safety and to road conditions that would occur as a result of Alternatives B or C, various mitigation measures have been suggested. In order to minimize the probability of an accident due to increased traffic, mobilization of heavy equipment, and transportation of supply vehicles, the following measures should be implemented: . During mobilization of heavy equipment to the site, the West Route from Dry Lake Campground to Fish Creek Reservoir should be closed to public traffic . Supply trucks should only be allowed to travel the West Route on weekdays during day light hours . The City should post signs indicating that supply trucks may be encountered along the West Route on weekdays during daylight hours :::~~~~:p,;:;~~o/...:W~%i~~~.:;:('.v:'i=~:;:;;:;:;:::;:@~,&::::-$:::::&~.<<';;;~::::::~~~-30;:}-::::::;:;::::;:;:1;~~.::::=:1-:~io::::i;:X*;&:i;x Page 4.36 September 1993