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Technical Revision 11 (TR-11) <br /> TR-11 was submitted in May of 2020. This revision requested the following: <br /> • Update water monitoring program, including updating stations, sampling schedule, and <br /> analyte list. <br /> • Allow placement of pilot passive water treatment materials within the monitored permit <br /> boundary. <br /> • Incorporate a waste storage pad and enclosure into the list of structures within the facility <br /> and include this structure in the updated Reclamation Plan. <br /> • Update the Reclamation Plan (Exhibit E) and Reclamation Plan Map (Map F-1)to <br /> address minor modifications to topsoil placement and vegetation plans and to incorporate <br /> the waste storage pad and enclosure. <br /> Permit documents updated as part of this revision include the Reclamation Plan (Exhibit E), the <br /> Reclamation Plan Maps (F-1 and F-Ia), Reclamation Costs (Exhibit L), and Map C-6 (Cross <br /> Sections). <br /> TR-I I was approved in October 2020. <br /> Technical Revision 12 (TR-12) <br /> TR-12 was submitted in March of 2021 and requested approval for the replacement of the <br /> groundwater monitoring well GW-04 with a new well GW-04R. This replacement is in response <br /> to the discovery of historic organic residue in the well and a DRMS request for Corrective <br /> Action and Revisions in February 2021. During adequacy review, OSMI no longer proposed a <br /> replacement well GW-04R and committed to monthly visual monitoring for leaks along the out- <br /> slope of Mine Water Pond #3. <br /> TR-12 was approved in September 2021. <br /> Technical Revision 13 (TR-13) <br /> TR-13, initially submitted in March of 2021, was officially withdrawn. Building modifications <br /> and bond updates that were proposed under this revision will be addressed by Amendment 2. <br /> Technical Revision 14 (TR-14) <br /> TR-14 was submitted in April 2021. This revision provided updates to the Environmental <br /> Protection Facility (EPF) certification plan for the new Reagent Room portion of the mill filter <br /> building extension (permitted under TR-09). These updates include the reasoning, <br /> characteristics, construction, operation, and reclamation measures associated with the Reagent <br /> Room EPF. TR-14 in currently in progress. <br /> Revenue Mine December 2021 4 <br />