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<br />Mountain Coal Company, L.L.C. <br />• Permit No. 96GU736 <br />Initial Approval -Modification No.1 <br />Page 4 <br />PARTICULATE EMISSIONS CONTROL PLAN <br />THE FOLLOWING PARTICULATE EMISSIONS CONTROL MEASURES SHALL BE USED FOR ENFORCEMENT <br />PURPOSES ON THE SOURCES COVERED BY THIS PERMIT, AS REQUIRED BY THE AIR QUALITY CONTROL <br />COMMISSION REGULATION N0.1. THIS SOURCE IS SUBJECT TO THE FOLLOWING EMISSION <br />GUIDELINES: <br />a. Mining Activities -Visible emissions not to exceed 20%, no off-property transport of visible <br />emissions. <br />b. Haul Roads - No off-property transport of visible emissions shall apply to on-site haul roads, the <br />nuisance guidelines shall apply to off-site haul roads. <br />c. Haul Trucks - No off-property transport of visible emissions except that when operating off the <br />property of the owner or operator, the applicable guidelines shall be no off-vehicle transport of <br />visible emissions. <br />• Control Measures <br />8. Fugitive particulate emissions will be minimized by West Elk implementing the reclamation measures <br />specified in the Mountain Coal Company, West Elk Mine Mining and Reclamation Plan, No. C-80- <br />007, as approved by the Colorado Division of Minerals and Geology, which specifies phased <br />reclamation and rehabilitation of disturbed areas through the establishment of permanent vegetative <br />cover. <br />9. Inactive topsoil and overburden stockpiles shall be compacted and revegetated within one year. <br />10. The surface moisture content of the active working area of the coal stockpiles and coal refuse <br />stockpiles shall be maintained at 7 to 10 percent. Water shall be applied to any part of a refuse <br />stockpile subject to vehicular activity. <br />11. Vehicle speed on unpaved roads and disturbed areas shall not exceed a maximum of 20 m.p.h. <br />Speed limit signs shall be posted. <br />12. Unpaved haul roads shall be treated with chemicals and watered as often as needed to effectively <br />control fugitive particulate emissions. <br />13. Reclamation works and sequential extraction of material shall be initiated to keep the total <br />disturbed areas at any one time to a minimum. <br />051/0015/016 <br />