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Cross Gold Mine <br />December 2024 U-8 <br /> <br /> <br />6. Other Agency Environmental Protection Measures <br /> <br />All necessary Boulder County land use approvals will be maintained throughout the life of the Cross <br />Gold Mine. <br /> <br />A Spill Prevention, Control and Countermeasure (SPCC) Plan will be prepared in conformance with the <br />U.S. Environmental Protection Agency’s (EPA’s) regulations for aboveground storage of more than <br />1,320 gallons of petroleum products. This plan will provide measures for safely storing and handling <br />petroleum products and responding to, and reporting, spills. A Material Containment Plan will also be <br />developed that provides guidance for the storage, use, cleanup, training, and reporting associated with <br />the use of designated chemicals on site. The SPCC Plan also addresses response actions in the event <br />of a site emergency. <br /> <br />The Colorado Department of Public Health and the Environment (CDPHE) will require permits covering <br />applicable water handling and air quality control. These permits will be in place prior to any disturbance. <br />A Stormwater Management Plan (SWMP) will be kept on site. If the mine plan and stormwater controls <br />are revised, the SWMP plan may be revised. This plan will address all stormwater controls and best <br />management practices regarding the handling and discharge of stormwater from the site. <br />7. Other Agency Permits <br />Other permits required for this operation that will include environmental protection measures are listed <br />below. All of these permits will be in place prior to milling operations. <br />1. CDPHE Fugitive Particulate Emission Permit with the Air Pollution Control Division <br />2. CDPHE Water Discharge Permit with the Water Quality Control Division <br />3. EPA Spill Prevention Control and Countermeasures Plan (SPCC) <br />4. Mine Safety Health Administration, Mine Number <br />8. Designated Chemical Evaluation <br />The full list of chemicals to be used in the mine for ore processing is shown in Section 9.0 of this <br />Exhibit. The MCP details the safe storage and handling of these chemicals. This plan can be found in <br />Appendix U-1. The layout drawings in the MCP show the layout of processing facilities and chemical <br />storage. Magnesium chloride may be used for dust control on roads but will be brought in by a <br />contractor and not stored on site. Diesel fuel, insignificant amounts of oils, and antifreeze will be used in <br />the mobile equipment. Storage and use of these products is discussed in the SPCC Plan.