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The passive water treatment system will contain and treat run off from the Revenue TSF. The <br /> discharge from this system is permitted as a point source per the Colorado Department of Public <br /> Health and Environment(CDPHE) Water Quality Control Division (WQCD) CDPS Permit No. <br /> CO-0000003. Details of the treatment system can be found in Exhibit U. Information regarding <br /> the waste rock and tailings chemistry also may be found in Exhibit U. Details of stormwater <br /> conveyances may be found in the site Stormwater Management Plan (Updated Appendix 2). <br /> 5 OPERATIONAL TIMELINE <br /> The following section outlines the schedule for startup and mining through the projected life of <br /> mine. <br /> Table D-5 Life of Mine Timeline <br /> Completion Date Number of Years <br /> Mill Construction August 2020 September 2021 +1 <br /> Development Mining January 2020 Ongoing +9 <br /> Resue Mining September 2021 December 2028 +8 <br /> Mill Operations September 2021 December 2029 +9 <br /> Reclamation January 2030 December 2035 +5 <br /> +14 years total <br /> 6 TEMPORARY CLOSURE <br /> Should market conditions or other circumstances require a temporary shutdown of mine <br /> operations,the Mine will provide notice to DRMS in accordance with Section 1.13.5 of the <br /> Colorado Hard Rock/Metal Mining Rules and Regulations. During non-operating periods, Ouray <br /> Silver Mines will maintain the buildings, drainage structures,ponds, roads, and other surface <br /> facilities in a safe and environmentally acceptable condition. Underground openings, gates, and <br /> buildings will be locked to discourage unauthorized access when mine personnel are not present. <br /> Revenue Mine <br /> Amendment 02 D-24 <br /> Updated August 2022 <br />