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Stormwater Management Plan <br />b. Vehicle tracking of sediments <br />Because the mine site consists of coarse rock with minimal fines, sediment tracking from <br />vehicular traffic is not anticipated. The access road will have a coarse road base, and) <br />will be constructed and maintained throughout the mine life to minimize vehicle tracking <br />on CR 124. (See BMP illustration Appendix A) <br />c. Management of contaminated soils <br />No contaminated or acid producing soils are or will be created as a result of the mining <br />operation. If spills or acid producing soils are encountered, the operator will drum or bag <br />and remove spills within 24 hours of occurrence and make arrangements to dispose of the <br />materials offsite in approved facilities within 30 days of the occurrence. <br />d. Loading and unloading operations <br />Loading and unloading of liquids and solids during site operation will be conducted <br />under supervision of trained personnel. Liquids (petroleum products) will be placed in <br />primary and secondary containment structures. <br />e. Outdoor storage activities <br />Chemicals will be stored in a dedicated storage units that will be locked when the mine is <br />not operating. Diesel and gasoline will be stored outside in approved tanks and <br />secondary containment structures. In some instances, non-toxic and non acid producing <br />run of mine ore will be temporarily stored on mine benches for processing. <br />f. Vehicle and equipment maintenance and fueling <br />Routine equipment maintenance will be conducted at the base of operation and on the <br />May Day No. 1 bench. Site maintenance activities will include fueling equipment, <br />generators, including antifreeze, oil and hydraulic fluid replacement. Working areas will <br />have BMPs including emergency response kits available or sediment control structures <br />will be put in place to prevent off site erosion and sedimentation impacts. <br />g. Significant dust or particulate generating processes <br />CDPHE air quality emissions from the operating facility have been addressed. The <br />operator has demonstrated emission rates from the mine operation will not trigger the <br />need to file a CDPHE Air Pollutant Emission Notice (APEN). When necessary, the <br />operator will control access road fugitive dust or other site activities using water spray or <br />DRMS approved non toxic chemical fixatives. <br />h. Routine maintenance activities involving fertilizers pesticides, detergents, fuels, <br />solvents, oils, etc. <br />Sunrise Mining, LLC <br />Revised August 9, 2017 <br />Page 9 of 30 <br />