2021-12-29_PERMIT FILE - M2021009 (9)

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Please see Map C-3 for the maximum disturbance of phase 1 that should be included in the reclamation bond. Prior to opening phase 2 — beyond the access road shown on Map C-3— a Technical Revision will be filed with the Division to adjust the bond according to phase 2 plans. 5. On Figure C-4— End of phase 2, please show how the phase 2 quarry will be accessed. Please see the attached Maps C-2 through C-7 for current phasing maps. 6. Figure C-5— End of phase 3 depicts an "underpass"to be constructed under the realigned Central City Parkway, between the phase 2 and 3 quarries. Will this underpass be constructed for mine access between the two quarries? Or is this a proposed wildlife mitigation structure? Please describe how this underpass will be constructed and used by the operation. The mine floor is separated by an internal graveled mine access road, also referred to as the mine ramp, that will not include any barriers to wildlife crossings (such as paved roads and fencing). Therefore, wildlife will be able to cross the site and connect with either side of the wildlife corridor unimpeded. If any changes to the designs shown are required and after consulting with CPW, a Technical Revision will be filed to bring any additional wildlife mitigation structures into the site's CDRMS permit. All wildlife mitigation structures, will be included in a subsequent Adequacy Response pending the amended January 2022 wildlife report. 7. Figure C-6— End of phase 4 & 5 Reservoir Excavation depicts the scenario in which the phase 2 and 3 quarries are mined more than 300 feet deeper than as shown on Figure C-5— End of phase 3, in preparation for utilizing the pits as reservoirs. However, (as requested in Exhibits D and E below) the applicant will need to commit to one mining plan (and reclamation plan) for now, and this plan can be revised later through the appropriate permit revision. Therefore, if the operator chooses to commit to the no- reservoir reclamation plan depicted in Figure F-1, please withdraw Figure C-6. If the applicant chooses the reservoir reclamation plan, the Division will have additional comments/questions regarding this figure. The reservoir alternative has been removed from the application. If reservoir reclamation is desired later in the mine's life, a Technical Revision will be submitted to the CDRMS. Exhibit D— Mining Plan (Rule 6.4.4): 8. Please state the proposed maximum disturbance (in acres) for mine phase 1. This disturbance amount should correlate with the bond estimate provided in Exhibit L. Please ensure this estimate includes all disturbances associated with the operation, including quarry areas, processing areas, stockpiling areas, equipment storage areas, office/shop areas, scale/scale house areas, parking areas, waste rock storage areas, roads, stormwater structures, and wildlife mitigation structures. The maximum disturbance of phase 1 will be 43.6 acres and is shown on Table 1. Additionally, Table 1 also includes maximum disturbance of each other phase. 9. The application states that gold may be mined as an incidental commodity during gravel mining. Please describe how the gold will be extracted, how it will be processed(if at all) December 2021 3 E Lewicki 81 Associates