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<br />Surface disturbance boundaries will be marked prior to and in the immediate vicinity of future refuse <br />sub-areas or other long-term land disturbing activities. The boundaries of disturbance will remain <br />marked until such time that the extent of the disturbance is complete. <br />Mine identification signs are displayed at each entrance to the permit area from public roads. The <br />roads where signs are posted include Rio Blanco County Roads 65, 73, and 96. In addition, a sign <br />is posted at the intersection of the main mine access road and County Road 65. Additional mine <br />identification signs may be posted as BME sees fit to identify certain facilities. <br />The mine identification signs list the mine name, operator, address, and telephone number of the <br />operator and the identification number of the current permit authorizing mining activities. <br />Although blasting is not an integral part of the mining operation, some blasting may sometimes be <br />required. When blasting is conducted, blasting signs are posted in the immediate vicinity of blasting <br />activities. Further, during periods of blasting, conspicuous signs stating "Warning: Explosives in <br />Use" are placed at all entrances to surface activities where blasting occurs. <br />Topsoil and subsoil stockpiles are clearly marked with signs reading "Topsoil" or "Subsoil". These <br />signs will remain in place as long as the stockpile exists. <br />No stream buffer zone signs will be placed near the White River since no construction activity is <br />anticipated in the future, and since there is no defined zone because of fluctuating water level due to <br />the Taylor Draw Reservoir dam. <br />IV.L Air Pollution Control Plan <br />Permits for construction and operation were obtained from the Colorado Air Quality Control Division. <br />The air quality monitoring program began in January, 1980. This program included measuring wind <br />speed, wind direction, and temperature at the ten-meter level, and measured total suspended <br />particulates (TSP) located near the proposed portal area. High-volume samples for TSP were taken <br />on an every fourth day schedule. Two separate TSP samplers were located near the haul road to <br />determine dust emissions generated by the refuse haul road traffic. <br />All federal and state air quality laws and regulations are being complied with. Copies of the air <br />pollution 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 />Permit Revision #6 (8/2008) IV-4 5