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Technical Revision 25 Schwartzwalder Mine <br /> ' 1.0 INTRODUCTION <br /> Cotter Corporation(N.S.L.) ("Cotter") is submitting a request for Technical Revision 25 ("TR- <br /> 25") to the Division of Reclamation, Mining and Safety("DRMS") to supplement both TR-23 <br /> and TR-24. This revision amends Cotter's Schwartzwalder Mine Permit (M-1977-300). <br /> Regarding TR-23, Cotter is seeking permission to place approximately 7,200 cubic yards ("cy") <br /> of alluvial material that is also regulated by the Colorado Department of Public Health and <br /> Environment ("CDPHE") into the Minnesota Adit along with other materials specified in <br /> Attachment F of TR-23. Regarding TR-24, Cotter is providing an amendment that includes <br /> ' information describing new process tanks that were added to the New Water Treatment Plant <br /> ("NWTP") after TR-24 was approved by DRMS. <br /> ' 1.1 SUMMARY OF AMENDMENT TO TR-23 <br /> As stated above, Attachment F of TR-23 presents an inventory of materials to be placed into the <br /> t Minnesota Adit. This list excludes approximately 7,200 cy of material addressed in Cotter's <br /> Radioactive Materials License("RML") 369-06. Specifically, RML 369-06 presents three areas <br /> regulated by the license (see Figure 1). <br /> Figure 1-1: RML License Areas <br /> 7�1 <br /> \ j <br /> ' RML#2 -ACTIVE <br /> ' RML#1 -RELEASED <br /> ' Mine Permit M-1977-300 <br /> Cotter Corporation(N.S.L.) 1 April 2017 <br />