2010-03-16_REVISION - M1981185 (29)

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Mayday Mine and Mill Site, Wildcat Mining Corporation, 110(2) Permit Amendment Exhibit C • necessary, from the San Juan Basin Health Department or alternative services will be provided. Chemical and Petroleum Product Storage Petroleum products to be stored at the site include: • Gasoline • Kerosene • Diesel Chemicals to be stored at the site include: • Soda Ash • Aero 350 Xanthate • Aerofloat 208 Promoter • Dowfax 2A1 Solution Surfactant • Sodium Silicate Solution • Methy isobutyl carbinol (M]BC) • Terpineol (Pine Oil) Material Safety Data Sheets (MSDS) for the above chemicals are presented in Attachment C -2. The chemical fate and concentrations to be slurried and disposed in the underground stopes follows. Chemicals will be labeled and stored in a shed located on the mine bench (Figure E -5). . Chemicals to the extent possible will be recycled or disposed offsite in accordance with Chemical Manufactures' recommendations. Chemicals or petroleum products where the volume exceeds 55 gallons will be located in double containment structures. The containment structures will be of the size to contain 150% of the stored liquids. Used oil, antifreeze and other waste hydrocarbons not used in the process will be recycled or disposed of in accordance with applicable rules and regulations. Solid Waste Solid waste (paper, wood, tires etc) will be disposed offsite in an approved Sanitary Landfill or recycled Bone Yard A bone yard (solids only) will be maintained on the Mayday No.l bench. Materials to be kept on site will support mine and milling maintenance requirements. Signage (Rule 3.1.12) As required, the following signs will be posted in the mine area: • Mine Safety and Health Administration (MSHA) Permit Number and contact information • Boundary markers or monuments • Colorado Department of Reclamation, Mining and Safety (CDRMS) signs that are visible from the mine access road 0 March 12, 2010 Amendment M- 1981 -185 3