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Cross Gold Mine <br />December 2024 U-1 <br /> <br /> <br />Exhibit U Environmental Protection Plan <br />An Environmental Protection Plan is being submitted because the project is classified as a Designated <br />Mining Operation. This classification results from the current DRMS definition of Designated Mining <br />Operations that includes a “mining operation at which toxic or acid-forming materials will be exposed or <br />disturbed as a result of mining operations.” The Environmental Protection Plan addresses the handling <br />of ore, concentrate, waste rock, and water that the CDRMS believes makes the Cross Gold Mine <br />qualify as a DMO. Mining methods including ore and waste handling are discussed in Exhibit D. Water <br />data and monitoring is discussed in Exhibit G. General discussion of concentrate handling is included in <br />this exhibit and will be further detailed in the technical revision adding the fully designed mill to the <br />application. This exhibit addresses the Environmental Protection Facilities present at the Cross Gold <br />Mine. <br />1. Environmental Protection Facilities <br />The facilities, structures, and mine elements listed below are environmental protection facilities (EPF): <br />• All monitoring wells <br />• Non-fuel chemical storage (including unloading areas) <br />• All collection and diversion ditches <br />• Ore pad <br />• Concentrate storage. <br />• All water handling ponds. <br />• All water pipes, tanks, and pumps <br />• Water treatment facility <br />Rule 6.4.21(7) information on these facilities can be found throughout this document. A guide to the <br />locations of different information required by the rule is found in Table U-1. <br />All EPFs will be certified by CDRMS according to a standard design-construction-as-built-certification <br />process. Each EPF will have a detailed design, construction schedule, and QA/QC program submitted <br />to CDRMS as a technical revision. Upon approval of the design, the EPF will then be constructed and <br />an as-built and construction report will be provided to CDRMS. The as-built will be stamped and signed <br />by a Colorado registered Professional Engineer. Assuming the as-built is acceptable, CDRMS will then <br />certify the EPF for use. Currently in place EPFs are certified by the approval of this EPP by CDRMS. <br />All EPFs have a red label on the maps for ease of identification. <br />