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Mineral Joe Mine Environmental Protection Plan 5 <br />5. DESIGNATED CHEMICALS EVALUATION <br />5.1 Rationale <br />Section 6.4.20(5) of the Hard Rock/Metal Mining Rules and Regulations ( "Rules ") requires that an EPP <br />contain a presentation and discussion of the types, quantities, and concentrations of "designated chemicals" <br />within the permit area, and to the degree such chemicals are present or used within the permit area, shall <br />characterize the designated chemicals as to: <br />a) Their known potential to affect human health, property or the environment; <br />b) Based on the best information available at the time of submittal of the Environmental <br />Protection Plan, specify the expected concentrations, process solution volumes and fate of <br />designated chemicals to be used in existing and proposed extractive metallurgical processes at <br />the mine, and /or mill site, if applicable; and <br />c) Provide, to the extent reasonably available, material safety data sheets for designated <br />chemicals. <br />5.2 Types, Quantities, and Concentrations of Designated Chemicals <br />Rule 1.1(13) defines designated chemicals as "toxic or acidic chemicals used within the permit area in <br />extractive metallurgical processing, the use of which, at certain concentrations, represents a potential threat <br />to human health, property or the environments ". No extractive metallurgical processing will occur on site <br />at the Mineral Joe Mine. All ore will be transported offsite for processing. <br />There are no designated chemicals in use or planned for use at the Mineral Joe Mine. Diesel fuel is not a <br />designated chemical (DRMS, 2011). Although they are not designated chemicals, petroleum products must <br />be properly handled and stored. During the operation of the mine, less than 1,320 gallons of fuel and oils <br />will be stored on the property in an existing above - ground fuel tank (Map 1). Because the volume of fuel <br />and oils stored onsite will be less than the regulatory threshold of 1,320 gallons, a spill containment plan is <br />not required (40 CFR 112, U.S. EPA Spill Prevention, Control, and Countermeasure Regulation). The fuel <br />tank is located within a bermed and lined catchment. The oils stored on the surface will be located within a <br />bermed and lined catchment. The above ground storage tanks for diesel fuel will be routinely inspected <br />and the berms will be maintained as described in the Materials Handling Plan. In addition, stormwater Best <br />Management Practices (BMPs) will be routinely monitored and maintained as described in Attachment 3. <br />Although fuels and lubricants are not considered designated chemicals, they are stored in compliance with <br />regulatory requirements to minimize the potential for release to the environment. The Materials Safety <br />Data Sheets (MSDSs) for fuel oil, lubricants, welding gases, and other products used at the Mineral Joe <br />Mine are available at Cotter's Western Slope office at 28151 DD Road in Nucla, Colorado. <br />5.3 Potentially Toxic - Forming Materials <br />The waste rock and ore at the Mineral Joe Mine are considered by DRMS to be potentially toxic - forming <br />materials. Native rocks that are not mined are not considered potentially toxic - forming materials for the <br />purpose of this EPP. <br />4148B.120927 Whetstone Associates <br />