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Ouray Silver Mines,Inc. <br /> 1900 Main St. Unit 1 <br /> PO Box 564 <br /> Ouray,CO 81427 <br /> TR / L IL R } i/L 1 ER 1 1l:\ES <br /> \ / kc LJW/thm <br /> v' 1 March 26, 202u <br /> Mr. Lucas West RECEIVED <br /> Environmental Protection Specialist <br /> Colorado Division of Reclamation Mining and Safety APR 15 2020 <br /> 101 3rd Street <br /> Grand Junction, CO 81501 DIVISION OF RECLAMATION N o <br /> MINING AND SAFETY 5 a N <br /> 1-1 o <br /> Subject: Technical Revision 11 446 imp if r _ <br /> J DRMS Permit No. M-2012-032 �ti P . a b <br /> Revenue Mine,Ouray County,Colorado N ro <br /> Dear Lucas, <br /> Ouray Silver Mines Inc. (OSMI)is submitting the attached Technical Revision 11 (TR-11)to <br /> reflect the following revisions to its Division of Reclamation Mining and Safety (DRMS) <br /> Section 112d Designated Mining Operation (DMO)Permit No. M-2012-32. Specifically,this <br /> TR-11 includes the following: <br /> 1. Update water monitoring program including updating stations,sampling schedule,and analyte list <. <br /> r- <br /> a -$ <br /> 2. Allow placement of Pilot Passive Water Treatment Materials within the monitored permit -+ <br /> boundary 3 y J <br /> 3. Incorporate a Waste Storage Pad and Enclosure into the list of structures within the facility and <br /> include this structure in the updated Reclamation Plan <br /> 4. Update the Reclamation Plan and Reclamation Plan Map(MAP F-1)to address minor <br /> modifications to topsoil placement and vegetation plans and to incorporate the Waste Storage Pad <br /> and Enclosure. <br /> Attached is the Technical Revision form, the TR fee of$1006, as well as documentation to <br /> support the requested revisions. If you have any questions,please contact me at(970)325-9830. <br /> Sincerely, <br /> Com`~ '✓ %� <br /> Brian K. Briggs <br /> COO, Ouray Silver Mine Inc <br /> Cc: Dean Miller,DGS <br /> Poppy Staub, Geosyntec • <br /> Phone: (970)325-9830 • Fax: (970)325-9824 <br />