2011-06-17_PERMIT FILE - C1981018A (6)

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IV.K Signs and Markers • Before construction activities began metal posts were placed around the perimeter of the permit boundary. These posts are approximately five feet high and the upper two feet of the posts are painted red. The posts are placed at intervals of approximately five hundred feet, but always close enough so that a second perimeter marker is visible from the first. Surface disturbance boundaries will be marked prior to and in the immediate vicinity of future refuse sub -areas or other long -term land disturbing activities. The boundaries of disturbance will remain marked until such time that the extent of the disturbance is complete. Mine identification signs are displayed at each entrance to the permit area from public roads. The roads where signs are posted include Rio Blanco County Roads 65, 73, and 96. In addition, a sign is posted at the intersection of the main mine access road and County Road 65. Additional mine identification signs may be posted as BME sees fit to identify certain facilities. The mine identification signs list the mine name, operator, address, and telephone number of the operator and the identification number of the current permit authorizing mining activities. Although blasting is not an integral part of the mining operation, some blasting may sometimes be required. When blasting is conducted, blasting signs are posted in the immediate vicinity of blasting • activities. Further, during periods of blasting, conspicuous signs stating "Warning: Explosives in Use" are placed at all entrances to surface activities where blasting occurs. Topsoil and subsoil stockpiles are clearly marked with signs reading "Topsoil' or "Subsoil'. These signs will remain in place as long as the stockpile exists. No stream buffer zone signs will be placed near the White River since no construction activity is anticipated in the future, and since there is no defined zone because of fluctuating water level due to the Taylor Draw Reservoir dam. IV.L Air Pollution Control Plan Permits for construction and operation were obtained from the Colorado Air Quality Control Division. The air quality monitoring program began in January, 1980. This program included measuring wind speed, wind direction, and temperature at the ten -meter level, and measured total suspended particulates (TSP) located near the proposed portal area. High - volume samples for TSP were taken on an every fourth day schedule. Two separate TSP samplers were located near the haul road to determine dust emissions generated by the refuse haul road traffic. • Technical Revision #68 (01/2011) IV -4 3