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GCC Rio Grande, Inc. <br />Permit Application 09FRO443F <br />APEN Required / Permit Exempted <br />Colorado Departmc.., of Public Health and Environment <br />Air Pollution Control Division <br />PARTICULATE EMISSIONS CONTROL PLAN FOR MINING ACTIVITIES <br />THE FOLLOWING PARTICULATE EMISSIONS CONTROL MEASURES SHALL BE USED FOR COMPLIANCE <br />PURPOSES ON THE ACTIVITIES COVERED BY THIS PERMIT, AS REQUIRED BY THE AIR QUALITY <br />CONTROL COMMISSION REGULATION NOA, Section III.D.1.b. THIS SOURCE IS SUBJECT TO THE <br />FOLLOWING EMISSION GUIDELINES: <br />a. Mining Activities - Visible emissions not to exceed 20% opacity, 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 nuisance <br />guidelines shall apply to off-site haul roads. <br />C. Haul Trucks - There shall be no off-property transport of visible emissions from haul trucks when <br />operating on the property of the owner or operator. There shall be no off-vehicle transport of visible <br />emissions from the material in the haul trucks when operating off of the property of the owner or operator. <br />Control Measures <br />1. Adequate soil moisture must be maintained in topsoil and overburden to control emissions during removal. <br />Watering shall be implemented if necessary. <br />2. Topsoil shall be compacted and treated with a chemical dust suppressant. <br />3. Overburden shall be immediately placed in the target reclamation area. <br />3. Emissions from material handling (i.e. removal, loading, and hauling) shall be controlled by watering at all <br />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 10 miles per hour. <br />Speed limit signs shall be posted. <br />5. Unpaved haul roads shall be graveled and watered as often as needed to control fugitive particulate <br />emissions. <br />6. Reclamation works and sequential extraction of material shall be initiated to keep the total disturbed areas at <br />nnv nnc Lima 1n a minimum. <br />AIRS POINT ID 09FRO443F Page 3 of 3