2020-03-06_REPORT - C1980007

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 3/6/2020
• Doc Name: Subsidence Monitoring Report
• From: Wright Water Engineers, Inc
• To: DRMS
• Annual Report Year: 2019
• Permit Index Doc Type: Subsidence Report
• Email Name: LDS
• Email Name: JDM
• Media Type: D
• Archive: No

TABLE OF CONTENTS
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1.0 BACKGROUND..............................................................................................................3
2.0 GENERAL SUBSIDENCE OBSERVATION AND REPORTING .....................................5
3.0 OTHER SUBSIDENCE MONITORING............................................................................7
3.1 Monument Dam/Minnesota Reservoir Monitoring ..............................................................7
3.2 USFS Roads and Stock Pond Monitoring...........................................................................8
3.3 Monument Dam/Minnesota Reservoir Aerial Photograph Comparison..............................8
3.4 U.S. Forest Service Water Resources Survey....................................................................8
3.5 Mineable Extent Map ..........................................................................................................9
4.0 FALL 2019 SUBSIDENCE OBSERVATIONS...............................................................10
4.1 Traverse A-A'.................................................................................................................... 11
4.2 Traverse B-B. .................................................................................................................... 11
4.3 Traverse C-C..................................................................................................................... 12
4.3.1 Location 1 ....................................................................................................... 13
4.3.2 Location 2 ....................................................................................................... 14
4.4 Traverse D-D..................................................................................................................... 16
4.5 Traverse E-E..................................................................................................................... 16
4.5.1 Location 3 ....................................................................................................... 17
4.5.2 Location 4 ....................................................................................................... 17
4.5.3 Location 5 .......................................................................................................20
4.5.4 Location 6 .......................................................................................................22
4.6 Traverse F-F......................................................................................................................24
4.6.1 Location 7 .......................................................................................................24
4.6.2 Location 8 .......................................................................................................26
4.7 Traverse G-G.....................................................................................................................28
5.0 CONCLUSIONS............................................................................................................29
6.0 BIBLIOGRAPHY...........................................................................................................32
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