2016-01-14_REVISION - M1983194 ‎(2)‎

• Permit No: M1983194
• IBM Index Class Name: Revision
• Doc Date: 1/14/2016
• Doc Name: Mine Plan Mod 500K TPY
• From: Natural Soda, LLC
• To: DRMS
• Email Name: THM
• Email Name: GRM
• Media Type: D
• Archive: No

Daub & Associates, Inc. Page 1-3 NS 2015 Mine Plan Modification
1/5/2016 Section 1 Preface and Table of Contents
General Table of Contents (continued)

Section 4.0 Geology
4.1. Introduction .................................................................................................. 4-1
4.2. Geology of Piceance Creek Basin ................................................................ 4-7
4.3. Geology of Natural Soda LLC Lease .......................................................... 4-30
4.4. References ............................................................................................... 4-164

Section 5.0 Hydrologic Conditions
5.1. Introduction .................................................................................................. 5-1
5.2. Surface Water .............................................................................................. 5-1
5.3. Groundwater .............................................................................................. 5-33
5.4. References ................................................................................................. 5-59

Section 6.0 Mining Plan
6.1. Introduction .................................................................................................. 6-1
6.2. Mine Plan Strategy ....................................................................................... 6-2
6.3. Resource Recovery and Production Rates .................................................. 6-3
6.4. Mining Stratiform Nahcolite .......................................................................... 6-8
6.5. Process Monitoring .................................................................................... 6-26
6.6. RD&D Plan – Deep Vertical Production Well (DVPW) ............................... 6-28
6.7. Environmental Monitoring Plan .................................................................. 6-38