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Technical Revision 25, Rev. 1 Schwartzwalder Mine <br /> Table of Contents <br /> 1.0 INTRODUCTION.............................................................................................................1 <br /> 1.1 SUMMARY OF AMENDMENT TO TR-23....................................................................1 <br /> 1.2 SUMMARY OF AMENDMENT TO TR-24....................................................................2 <br /> 2.0 TR-23 AMENDMENT......................................................................................................4 <br /> 2.1 DESCRIPTION OF ACTIVITY......................................................................................4 <br /> 2.2 PREVIOUS RADIOLOGICAL CONTAMINATION ASSESSMENTS ..........................4 <br /> 2.2.1 Gamma Walkover Survey........................................................................................4 <br /> 2.2.2 Soil Sampling ..........................................................................................................6 <br /> 2.3 SOIL CLEANUP CRITERIA ..........................................................................................9 <br /> 2.4 EXCAVATION METHOD AND SURVEYS ..................................................................9 <br /> 2.5 AMENDED ATTACHMENT F.......................................................................................9 <br /> 3.0 TR 24 AMENDMENT.....................................................................................................10 <br /> 3.1 DESCRIPTION OF ADDITIONAL FACILITIES .........................................................10 <br /> 3.1.1 Treated Water Storage Tanks.................................................................................10 <br /> 3.1.2 Clean Water Tank..................................................................................................10 <br /> 3.1.3 Ion Exchange Columns..........................................................................................13 <br /> 3.1.4 Reactor Tank .........................................................................................................13 <br /> 3.2 FACILITIES EVALUATION........................................................................................14 <br /> 3.2.1 Site-Specific Conditions.........................................................................................14 <br /> 3.2.2 Designated Chemicals............................................................................................14 <br /> 3.2.3 Geological and Geochemical Conditions................................................................15 <br /> 3.2.4 Monitoring and Sampling ......................................................................................15 <br /> 3.2.5 Pollution Control Measures....................................................................................15 <br /> 3.2.6 Demonstration of Adequate Containment...............................................................16 <br /> 4.0 REFERENCES................................................................................................................17 <br /> LIST OF FIGURES <br /> Figure 1-1: RML License Areas.................................................................................................I <br /> Figure 1-2: New Water Treatment Plant Area.............................................................................3 <br /> Figure 2-1: Gamma Scan Results ...............................................................................................6 <br /> Figure 3-1: Future New Water Treatment Plant Diagram..........................................................I I <br /> Figure 3-2: Future New Water Treatment Plant Layout............................................................12 <br /> ATTACHMEN <br /> T F - Revised Inventory of Minnesota Adrt Materials <br /> Mine Permit M-1977-300 <br /> Cotter Corporation(N.S.L.) i June 2017 <br />