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Department of Health, Air Pollution Control Division, as more particularly described in <br />Section 2.03.10. Copies of all applicable emission permits issued by the Colorado <br />Department of Health are contained in Exhibit 8, Air Quality Information. Colowyo conducts <br />air quality monitoring at the site in accordance with the requirements of the emission permits. <br />The principal fugitive dust control practices employed by Colowyo are as follows: <br />Roads <br />Colowyo employs a dust suppression program for in pit roads and other unpaved roads which <br />primarily involves periodic watering. Four mine water trucks run periodically as needed over <br />the roads wetting down any dusty conditions. During the dryer months of the year, the water <br />trucks will wet down the roads which are being utilized a minimum of two or three times per <br />shift. If determined to be necessary as an addition to periodic watering, a chemical dust <br />suppression agent may be used during the dry months on the primary in pit roads. To this <br />date, however, chemical stabilization of the unpaved in pit roads has not been successful for <br />more than a short period of time due to changing weather conditions and the use of heavy <br />170, 190 and 240 ton haulage trucks. <br />Colowyo has surfaced "in-pit" roads with gravel or crushed rock; however, no roads in the pit <br />area will be paved with asphalt. Asphalt could not sustain the enormous weights of the <br />haulage equipment currently in use. Likewise, crawler equipment would rip the asphalt <br />surface causing an extremely hazardous condition for all equipment and personnel. All roads <br />in the mining operation will be constantly maintained by a motor grader, scraper, or rubber <br />tired dozer to remove any coal,, rock, or any other debris. Smooth and clean road surfaces are <br />essential for not only minimizing dust, but also for allowing efficient, safe and economic use <br />of haulage equipment. <br />The haul roads have been paved with asphalt to provide for emission control. The paved <br />roads include approximately five miles of road from State Highway 13/789 to the main office <br />building, the road from the main office building to the Gossard coal loadout, and the road <br />from the shop facility to the Gossard coal loadout. <br /> <br />2.0~-62 Revision Date: 8/29/97 <br />Revision No.: TR-42 <br />