2022-01-25_REPORT - M1983194

• Permit No: M1983194
• IBM Index Class Name: Report
• Doc Date: 1/25/2022
• Doc Name: Environmental Monitoring Plan
• From: Daub & Associates, Inc/Natural Soda LLC
• To: DRMS
• Annual Report Year: 2022
• Email Name: ACY
• Email Name: THM
• Media Type: D
• Archive: No

TABLE OF CONTENTS
1 Introduction ...................................................................................................................... 1
2 Groundwater Monitoring Program................................................................................... 1
2.1 Groundwater Monitoring Wells.......................................................................... 1
2.1.1 In-Field Solution Mining Groundwater Monitoring Wells .................................. 6
2.1.2 Remote Groundwater Monitoring Wells and Exploration Holes........................ 6
2.1.3 Reporting Results of Groundwater Monitoring.................................................. 6
2.1.4 Groundwater Quality .......................................................................................... 7
2.1.5 Water Monitoring Plan........................................................................................ 7
2.1.6 Production Well Fluid Sampling.......................................................................... 7
2.1.7 Monitoring/Reporting Contingency Plan............................................................ 7
2.2 Seeps, Springs, and Precipitation........................................................................ 9
2.3 Stream Gauging Stations..................................................................................... 9
2.4 Surface Water Monitoring Reports................................................................... 12
3 Subsidence Monitoring Plan........................................................................................... 12
3.1 Subsurface Subsidence Monitoring................................................................... 12
3.1.1 Borehole Geophysics......................................................................................... 13
3.1.2 Subsurface Monitoring Frequency, Duration, and Location............................. 13
3.1.3 TDR Well............................................................................................................ 15
3.2 Surface Subsidence ........................................................................................... 15
3.3 Solution Mining Interval Configuration............................................................. 15
4 Production Well Mechanical Integrity............................................................................ 17
4.1 Casing Pressure Tests (MIT Part 1)..................................................................... 17
4.2 Temperature Logs (MIT Part II)......................................................................... 17
5 Biological Monitoring...................................................................................................... 17
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