2019-10-10_HYDROLOGY - M1980244 ‎(18)‎

• Permit No: M1980244
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/10/2019
• Doc Name Note: Waste Rock Geochemical Characterization Study Report
• Doc Name: Vol. I, Part 1 of 6
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

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Denver, Inc.
TABLE OF CONTENTS
PAGE
LISTOF FIGURES....................................................................................................................................iv
LISTOF TABLES.......................................................................................................................................v
LISTOF APPENDICES.............................................................................................................................vi
LIST OF ABBREVIATIONS......................................................................................................................vii
EXECUTIVESUMMARY.........................................................................................................................ix
1.0 INTRODUCTION.............................................................................................................................1
1.1 GEOLOGIC SUMMARY ..........................................................................................................2
2.0 SAMPLE SELECTION.......................................................................................................................4
2.1 WASTE-ROCK CLASSIFICATION.............................................................................................4
2.2 UPDATED ROCK-TYPE GROUPS ............................................................................................6
2.3 PHASE I SAMPLE SELECTION.................................................................................................7
2.4 PHASE II SAMPLE SELECTION................................................................................................8
3.0 STATIC TESTING...........................................................................................................................10
3.1 ACID-BASE ACCOUNTING ...................................................................................................10
3.1.1 Method..................................................................................................................10
3.1.1.1 Paste pH .........................................................................................................10
3.1.1.2 Acid-Generation Potential .............................................................................10
3.1.1.3 Acid-Neutralization Potential.........................................................................12
3.1.1.4 Net Neutralization Potential..........................................................................13
3.1.1.5 Neutralization Potential Ratio .......................................................................13
3.1.2 Limitations of ABA Testing ....................................................................................14
3.1.3 Results....................................................................................................................16
3.2 NET ACID-GENERATION TESTING.......................................................................................17
3.2.1 Methods.................................................................................................................18
3.2.2 Results....................................................................................................................18
3.3 MINERALOGICAL TESTING..................................................................................................19
3.3.1 Methods.................................................................................................................19
3.3.2 Results....................................................................................................................20
3.4 SOLID-PHASE CHEMICAL COMPOSITION ...........................................................................21
3.4.1 Methods.................................................................................................................21
3.4.2 Results....................................................................................................................21
3.5 METEORIC WATER MOBILITY PROCEDURE........................................................................22
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