2012-10-01_REVISION - M1977310 (10)

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JD -6 Mine Environmental Protection Plan 5 Weathering processes that might alter the natural character of these materials are evaluated in Section 5.3.3. Monitoring of these Environmental Protection Facilities is described in Section 9.5. In addition, stormwater BMPs will be routinely monitored and maintained as described in Attachment 3. Table 2. List of Environmental Protection Facilities Facility Name Waste Rock Pile Stormwater Catchment 5. DESIGNATED CHEMICALS EVALUATION Size Size (ft') (acres) 67,071 1.54 3,950 0.09 5.1 Rationale Section 6.4.20(5) of the Hard Rock /Metal Mining Rules and Regulations ( "Rules ") requires that an EPP contain a presentation and discussion of the types, quantities, and concentrations of "designated chemicals" within the permit area, and to the degree such chemicals are present or used within the permit area, shall characterize the designated chemicals as to: a) Their known potential to affect human health, property or the environment; b) Based on the best information available at the time of submittal of the Environmental Protection Plan, specify the expected concentrations, process solution volumes and fate of designated chemicals to be used in existing and proposed extractive metallurgical processes at the mine, and /or mill site, if applicable; and c) Provide, to the extent reasonably available, material safety data sheets for designated chemicals. 5.2 Types, Quantities, and Concentrations of Designated Chemicals Rule 1.1(13) defines designated chemicals as "toxic or acidic chemicals used within the permit area in extractive metallurgical processing, the use of which, at certain concentrations, represents a potential threat to human health, property or the environments ". No extractive metallurgical processing will occur on site at the JD -6 Mine. All ore will be transported offsite for processing. There are no designated chemicals in use or planned for use at the JD -6 Mine. Diesel fuel is not a designated chemical (DRMS, 2011). Although petroleum products are not designated chemicals, they must be properly handled and stored. During the operation of the mine, less than 1,320 gallons of fuel and oils will be stored on the property. Because the volume of fuel and oils stored onsite will be less than the regulatory threshold of 1,320 gallons, a spill containment plan is not required (40 CFR 112, U.S. EPA Spill Prevention, Control, and Countermeasure Regulation). Any oils or lubricants stored on the surface will be located within a bermed and lined catchment. Storage areas will be routinely inspected and the berms will be maintained as described in the Materials Handling Plan. In addition, stormwater BMPs will be routinely monitored and maintained as described in Attachment 3. Although fuels and lubricants are not considered designated chemicals, they are stored in compliance with regulatory requirements to minimize the potential for release to the environment. The Materials Safety 4148A.120927 Whetstone Associates •