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lk Natural Soda LLC 2017 Project Status Report & Annual Plan of Development <br /> Table of Contents <br /> 1 .0 Introduction and Project Summary 1 <br /> 2.0 Description of Project Area 1 <br /> 2.1 Location and Regional Setting 1 <br /> 2.2 Leasehold Status 6 <br /> 3.0 Project Status 6 <br /> 3.1 2017 Project Activities (Confidential) 6 <br /> 3.1 .1 Items of Significance (Confidential) 6 <br /> 3.1 .2 Cavity Production (Confidential) 7 <br /> 3.1 .3 2017 Monthly Production Tons Summary (Confidential) 7 <br /> 3.1 .4 Regulatory Review (Confidential) 8 <br /> 3.2 Proposed 2018 Activities and Schedule (Confidential) 11 <br /> 3.2.1 Processing (Confidential) 11 <br /> 3.2.2 Well field (Confidential) 11 <br /> 3.2.3 EPA Notification — 2018 Schedule of Planned Mechanical Integrity Test <br /> (MIT) (Confidential) 11 <br /> 3.2.4 EPA Notification — 2018 Schedule of Planned SSMW Logging <br /> (GR/CCL) (Confidential) 12 <br /> 4.0 2017 Project Activities 13 <br /> 4.1 On-Site Facilities and Process Description 13 <br /> 4.1 .1 General Arrangement 13 <br /> 4.1 .2 Lab Operation / Sanitation / ISO 13 <br /> 4.1 .3 Process, Utilities, Facilities 13 <br /> 4.1 .4 Wells Associated With the NS Project (Confidential) 15 <br /> 4.1 .5 Other Activities 15 <br /> 4.2 New Findings or Developments (Confidential) 18 <br /> 4.3 2017 Operation Results (Confidential) 18 <br /> 4.4 Geotechnical Program 20 <br /> 4.4.1 Subsurface Subsidence Geophysical Logging 20 <br /> 4.4.2 Surface Subsidence Monitoring 20 <br /> 4.5 Water Well Pumpage 20 <br /> 5.0 Environmental Monitoring and Protection 22 <br /> 5.1 Hydrology Monitoring 22 <br /> 5.1 .1 Introduction 22 <br /> 5.1 .2 Stream Gauging Stations 22 <br /> 5.1 .3 Monitoring Wells 24 <br /> 5.1 .4 Process Ponds 24 <br /> 5.1 .5 Potentiometric Surface Maps (Confidential) 24 <br /> DAUB &ASSOCIATES, INC. • a- ii January 2018 <br />