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BLUE MOUNTAIN ENERGY, INC. Permit No. 93RB1171F Final Approval Page 3 ATTACHMENT A PARTICULATE EMISSIONS CONTROL PLAN THE FOLLOWING PARTICULATE EMISSIONS CONTROL MEASURES SHALL BE USED FOR ENFORCEMENT PURPOSES ON THE SOURCES COVERED BY THIS PERMIT, AS REQUIRED BY THE AIR QUALITY CONTROL COMMISSION REGULATION N0.1. THIS SOURCE IS SUBJECT TO THE FOLLOWING EMISSION GUIDELINES: a. Mining Activities -Visible emissions not to exceed 20%, no off-property transport of visible emissions. b. Haul Roads - No off-property transport of visible emissions shall apply to on-site haul roads, the nuisance guidelines shall apply to oft-site haul roads. c. Haul Trucks - No off-property transport of visible emissions except that when operating off the property of the owner or operator, the applicable guidelines shall be no off-vehicle transport of visible emissions. Control Measures ~_ Adequate soil moisture must be maintained in topsoil and overburden to control emissions during removal. Watering shall be implemented if necessary. 2. Topsoil and overburden stockpiles shall be compacted and revegetated within one year. Emissions from material handling (i.e. removal, loading, and hauling) shall be controlled by watering at all times unless natural moisture is sufficient to control emissions. 4. Vehicle speed on unpaved roads and disturbed areas shall not exceed a maximum of 10 m.p.h. Speed limit signs shall be posted. 5. Unpaved haul roads shall be watered as often as needed to control fugitive particulate emissions. 6. Reclamation works and sequential extraction of material shall be initiated to keep the total disturbed areas at any one time to a minimum. 7. To minimize emission from the stockpiles, slopes of the stockpiles shall be kept less than 30 per cent grade, that is, not more than three (31 feet vertical rise in ten (10! feet horizontal distance. 103/0014/008