2022-09-06_REVISION - M1977300

• Permit No: M1977300
• IBM Index Class Name: Revision
• Doc Date: 9/6/2022
• Doc Name Note: 4th Adequacy Reponse
• Doc Name: Adequacy Review Response
• From: Colorado Legacy Land
• To: DRMS
• Type & Sequence: AM6
• Email Name: AME
• Email Name: MAC
• Media Type: D
• Archive: No

COLORADO LEGACY LAND
SCHWARTZWALDER MINE
TABLE OF CONTENTS
TABLEOF CONTENTS..........................................................................................................................................................................................III
LISTOF TABLES......................................................................................................................................................................................................V
LISTOF FIGURES..................................................................................................................................................................................................VI
EXHIBITA. LEGAL DESCRIPTION....................................................................................................................................................................1
EXHIBITB. INDEX MAP....................................................................................................................................................................................3
EXHIBIT C. PRE-MINING AND MINING PLAN MAP(S)OF AFFECTED LANDS.........................................................................................5
EXHIBITD. MINING PLAN................................................................................................................................................................................7
EXHIBITE. RECLAMATION PLAN...................................................................................................................................................................9
E.1. CONCEPTUAL CONSIDERATION..................................................................................................................................................9
E.2. INTERCEPTION AND TREATMENT OF ALLUVIAL GROUNDWATER......................................................................................11
E.3. ISOLATION OF RALSTON CREEK FROM SOURCES OF IMPACTS............................................................................................11
E.4. MITIGATION PLAN FOR SOLID SOURCE TERM MATERIALS AND RECLAMATION PLAN FOR THE ALLUVIAL VALLEY 12
E.4.1. REPLANTING AND RESEEDING.................................................................................................................................................14
E.5. MINE POOL MITIGATION..........................................................................................................................................................17
E.5.1. PHYSICAL STABILIZATION OF THE MINE POOL DEMONSTRATION....................................................................................17
E.5.1.1. PHYSICAL STABILIZATION OF THE MINE POOL CONCLUSION.............................................................................................18
E.5.2. CHEMICAL STABILIZATION OF THE MINE POOL DEMONSTRATION...................................................................................19
E.5.2.1. IN-SITU TREATMENTS...............................................................................................................................................................24
E.5.2.2. IN-SITU TREATMENT RESULTS................................................................................................................................................24
E.5.2.3. CHEMICAL STABILIZATION OF THE MINE POOL DISCUSSION.............................................................................................26
E.5.2.4. CHEMICAL STABILIZATION FUNCTIONAL DEFINITION.........................................................................................................32
E.5.2.5. PHYSICAL AND CHEMICAL STABILIZATION CONCLUSION....................................................................................................32
E.5.3. TRACER TEST..............................................................................................................................................................................34
E.5.4. WATER TREATMENT PLANT OPERATING STRATEGY..........................................................................................................35
E.6. WATER QUALITY MONITORING PLAN....................................................................................................................................35
EXHIBITF. RECLAMATION PLAN MAP........................................................................................................................................................49
EXHIBITG. WATER INFORMATION..............................................................................................................................................................53
EXHIBITH. WILDLIFE INFORMATION..........................................................................................................................................................57
EXHIBITI. SOILS INFORMATION..................................................................................................................................................................59
EXHIBIT J. VEGETATION INFORMATION.....................................................................................................................................................61
EXHIBITK. CLIMATE INFORMATION............................................................................................................................................................63
EXHIBITL. RECLAMATION COSTS................................................................................................................................................................65
EXHIBITM. OTHER PERMITS AND LICENCES..............................................................................................................................................99
EXHIBIT N. SOURCE OF LEGAL RIGHT-TO-ENTER..................................................................................................................................101
EXHIBIT 0. OWNERS OF RECORD TO AFFECTED LAND(SURFACE AREA)AND OWNERS OF SUBSTANCE TO BE MINED...........103
EXHIBIT P. MUNICIPALITIES WITHIN TWO MILES................................................................................................................................105
EXHIBIT Q. PROOF OF MAILING OF NOTICES TO COUNTY COMMISSIONERS AND CONSERVATION DISTRICT..............................107
EXHIBIT R. PROOF OF FILING WITH COUNTY CLERK AND RECORDER................................................................................................109
AUGUST 2022 111 AMENDMENT 6