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003200 TASK 5.G--POTEl\'TIAL ENVIRONME!\'TAL IMPACfS OF ALTERNATIVE CONCEPTS Purpose The study team will identify the environmental impacts associated with the three alter- native concepts identified in previous tasks. Responsibility BIO/WEST will be responsible for this task, which is scheduled for June 1991. Approach The study team will undertake the following activities. 1. The potential positive and negative environmental impacts of each of the three alternative concepts shortlisted in Task 5.E will be identified. This will involve detailed and intensive data collection and integration to identify onsite impacts at the reservoir and dam sites, as well as downstream offsite impacts. BIO!\VEST will conduct an aerial reconnaissance and an onground reconnais- sance of each alternative concept. The impact analysis will include terrestrial wildlife values, fisheries resources, water quality, aquatic life, land use, vegeta- tion, and wetlands, as well as onsite and offsite impacts on state and federally listed endangered species. 2. BIO/WEST will obtain information from state and federal resource agencies and personnel in advance of the site visits. Detailed information will be obtained for each discipline on existing resource types, levels, and trends. Information will be secured before site visits from agencies including the U.S. Forest Service, Bureau of Land Management, National Park Service, Colorado ~rt~of Parks and Recreation, Colorado Division of Wildlife, and other peninent agen- cies. Additional site-specific data and information on environmental resources will be . obtained through. focused interviews with identifiable "key individuals,1I ineluding both agency personnel, recreationists, and local residents who may make use of various locations and resources at or near each alternative site. 3. BIO!\VEST will document at each alternative concept site the types of recre- ation use, the quality of the recreation resources, and its capacity to support those activities, levels of current use, demand trends for the future, and presence and capability of other nearby alternative locations to suppon similar recreation uses. Similarly, existing flat-water recreation utilization patterns in the vicinity or each alternative site and the region will be evaluated. Data will be assembled to document the nature of existing flat-water recreation resources and the existing ")- ....:> DENI800P/033.51