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• Forest Service (1972), and CDOW (personal communication). Data from <br />other wildlife baseline studies conducted on the Seneca II (Mariah <br />Associates 1980) and Seneca II-W Mines (prepared by Goertler, 1982) <br />were also reviewed when compiling potential species lists. <br />During all fieldwork, biologists used binoculars and spotting <br />scopes to make observations, and continually updated the species lists <br />for the area. Special attention was given to documenting the presence <br />of species not targeted by specific surveys; especially, mammalian <br />predators, amphibians, reptiles, and species considered migratory <br />birds of high federal interest. Standard field guides (Muria 1954, <br />Stebbins 1966, Burt and Grossenheider 1976, Baxter and Stone 1980, <br />Clark and Stromberg 1987, Peterson 1990, and Zeveloff and Collett <br />1992) were used to identify animals. <br />• BIG GAME <br />One winter aerial survey for big game animals was conducted on 27 <br />January 1993. The survey was coordinated with Jeff Madison of CDOW <br />and coincided with CDOW's schedule for surveying big game in the <br />region. The same helicopter and pilot (High Country Helicopters, <br />Montrose, CO) used by state personnel was employed during the Yoast <br />survey. The big game survey area (Exhibit 11-1) included the wildlife <br />survey area and its 1-mile perimeter, and a 3/4-mile buffer on either <br />side of the haul road corridor (approximately 21.4 mi2). The area was <br />searched by systematically following each drainage and thoroughly <br />covering adjacent slopes before moving to the next drainage. The <br />survey was conducted from 08:50h to 10:15h. Two biologists were in <br />• the helicopter with the pilot. As big game herds were sighted their <br />3 <br />