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Get,/rP~.l f `~~i 7` <br />All federal and state air quality laws and regulations are being complied with. Copies of the air pollution <br />permits and related material are presented in Illustration 43. <br />Magnesium chloride is used as a chemical stabilizer. Fugitive dust on access and haul roads is <br />controlled by limiting the speed of the vehicles to 30 mph and using chemical stabilizers. <br />The coal refuse is wet and therefore not dusty. Dust from topsoil stockpiles is controlled by vegetative <br />cover. Watering may be used during soil removal and replacement if dry conditions warrant. <br />Alternatives to the coal handling methods described in the permit application were totally enclosing, or <br />not enclosing and using water spray, on the rotary breaker, conveyors, and transfer points. Totally <br />enclosing these facilities would have provided 100 percent control since it would be airtight. Using water <br />spray on the unenclosed facilities would have provided only 50 percent control for fugitive emissions. <br />Coal is transferred from the mine to the power plant by a combination of overland conveyor and electric <br />railroad. <br />IV.M Fish and Wildlife Plan <br />IV.M.1 Big Game Migration A big game migration study was conducted in the mine permit area. Mule <br />deer and pronghorn observations were made via aerial reconnaissance from October 1980 through April <br />or May 1981. The main objectives of the study were 1) determine the timing of fall and spring migratory <br />movements; 2) estimate the spatial and temporal variation in population sizes; and 3) identify important <br />areas, such as major crossings. Appropriate mitigation measures were then developed in regard to <br />potential coal transportation system impacts. <br />IV.M.2 Threatened and Endangered Saecies The habitats for threatened and endangered species <br />and those of unusually high value are of concern to BME. Consequently, the biological consultants were <br />directed to sample all recognizable habitat types over the area of potential perturbation. This was done <br />and was reported. The vertebrate species are listed, categorized and populations estimated by habitat <br />type in Section II.H of the permit. Additionally, the habitats supporting the greatest number of tertestrial <br />vertebrates are also identified in the same section. There are no vegetative communities (habitats) <br />present in the area of potential impact due to construction and operation of the coal mine and its <br />~ associated facilities that are considered critical to the continued existence and stability of the population <br />o cies. No threatened or endangered species of terrestrial vertebrate were~ac~ <br />however, the projected range of the black-footed ferret was of concern. Since they have historically <br />been dependent upon prairie dog colonies for their existence, two man-weeks were spent to determine <br />prairie dog population density and distribution in relationship to the specific areas to be used for the mine <br />portal, washing facility, haul road, coal conveyor, disposal and alternate power plant sites. , <br />Mine Permit Renewal #3 (Rev. 8/99) IV~4 <br />