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~J <br /> <br />Page 6 Colorado Department of Public Health and Environment <br />Air Pollution Control Division <br />Rocky Mountain Materials and Asphalt, Inc. <br />Permit No. OOFR0237F <br />Initial Approval <br />PARTICULATE EMISSIONS CONTROL PLAN FOR MINING AND PROCESSING ACTIVITIES <br />THE FOLLOWING PARTICULATE EMISSIONS CONTROL MEASURES SHALL BE USED FOR <br />COMPLIANCE PURPOSES ON THE ACTIVITIES COVERED BY THIS PERMIT, AS REQUIRED BY THE AIR <br />QUALITY CONTROL COMMISSION REGULATION N0.1, SECTION III.D.1.b. THIS SOURCE IS SUBJECT <br />TO THE FOLLOWING EMISSION GUIDELINES: <br />a. Mining and Processing Activities -Visible emissions not to exceed 20%, no off-property transport of <br />visible 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 property <br />of the owner or operator, the applicable guidelines shall be no off-vehicle transport of visible emissions. <br />Control Measures <br />1. Adequate soil moisture must be maintained in topsoil and overburden to control emissions during <br />removal. Watering shall be implemented if necessary. <br />2. Topsoil and overburden stockpiles shall be compacted and revegetated within one year. <br />3. Emissions from material handling (i.e. removal, loading, and hauling) sha11 be controlled by watering <br />at all times unless natural moisture is sufficient to control emissions. <br />4. Vehicle speed on unpaved roads and disturbed areas shall not exceed a maximum of 30 m.p.h. Speed <br />limit signs shall be posted. <br />5. Vehicle speed on haul roads and service roads shall be restricted to 30 miles per hour. Speed limit <br />signs shall be posted. <br />6. Unpaved haul roads sha11 be watered as often as needed to control fugitive particulate emissions such <br />that the above guidelines are met. <br />7. Reclamation works and sequential extraction of material shall be initiated to keep the total disturbed <br />areas at any one time to a minimum. <br />8. Material stockpiles shall be watered as necessary to control fugitive particulate emissions. Aggregate <br />materials shall be sprayed with water during material loading into the storage bins or stockpiles. <br />9. Plant entryway, truck service roads, and concrete hatching areas shall be graveled. Watering shall be <br />implemented if emission guidelines above are not met. <br />043!0116!001 <br />