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• As part of wildlife monitoring studies conducted at the Seneca Mine, an aerial survey for <br />big game is performed annually in winter. In 1994, Peabody Western Coal Company contracted <br />Powder River Eagle Studies Inc. to conducted the aerial survey. Presented below are <br />descriptions of the study area, survey methods, and results. <br />Questions or comments concerning the information contained in this report should be <br />directed to the attention of Mr. Brian P. Dunfee, Environmental Affairs Department, Peabody <br />Western Coal Company, 1300 S. Yale, Flagstaff, AZ 86001, telephone (602) 774-5253; or Mr. <br />Chuck LaRue, Environmental Affairs Department, Peabody Western Coal Company, P. O. Box <br />625, Kayenta, AZ 86033, telephone (602) 677-5085. <br />• STUDY AREA <br />The Seneca Mine is approximately 9 miles southeast of Hayden, Routt County, Colorado; <br />the mine permit area is about 5.5 miz. In previous years, the big game survey area included the <br />permit area and aone-mile perimeter (approximately 17.5 miz). In 1994, the survey area was <br />expanded to gather regional data. <br />The expanded survey area totaled approximately 84.5 miz and extended from Seneca <br />Mine on the east to the Seneca II-W Mine on the west (Exhibit 1). The entire survey area is <br />in the brushy foothills of the Williams Fork Mountains, south of the Yampa River. Elevations <br />over the area range from 6100 feet in the north to over 8300 feet above sea level in the south. <br />Steep slopes and high ridges covered with mountain brush characterize the topography and <br />vegetation of the expanded area. Aspen (Populus tremuloides) stands are scattered throughout <br />• the area, but mainly occur along the upper reaches of drainages. Isolated stands of fir are found <br />at the highest elevations. Rolling rangeland and agricultural fields are in the north-central, <br />1941 Seneca Mine Big Game Aenal Survey Pa c 1 <br />s <br />