2016-01-14_REVISION - M1983194

• 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

TABLE OF CONTENTS
INTRODUCTION............................................................1
LOCATION OF THE PROJECT AREA............................................2
ENVIRONMENT............................................................2
SUMMARY OF FILES SEARCH AND LITERATURE OVERVIEW.......................12
STUDY OBJECTIVES / RESEARCH DESIGN......................................48
FIELD METHODS..........................................................48
STUDY FINDINGS..........................................................52
DISCUSSION..............................................................72
DETERMINATIONS OF EFFECT/MANAGEMENT RECOMMENDATIONS................79
REFERENCES.............................................................80
APPENDIX A: Bibliographic List of Previously Conducted Cultural Resource Inventories
and List of Previously Recorded Sites.............................A.1
APPENDIX B: Resources Location Data and OAHP Forms (BLM and OAHP only).....B.1
LIST OF FIGURES, TABLES AND PLATES
Figures 1 and 2. Project location maps.......................................vi-vii
Figure 3. Diagrammatic cross-section of the alluvial stratigraphy in Ryan Gulch.........9
Figure 4. Number of dated UBL/WIC/REX projects house pits by cal BP millennia......27
Figure 5. Fluctuations in temperatures during the Little Ice Age (After Lamb 1969 and
Schneider and Mass 1975.)............................................33
Figures B-1 through B-3................................................B.3-B.5
Table 1. List of previously recorded cultural sites and isolated finds, and paleontological
localities..........................................................12
Table 2. Acceptable Early-dated Occurrences of Project Area Archaic Era Projectile Point
Styles..............................................................25
Table 3. Isolated find descriptions............................................71
Table A-1. Bibliographic list of previously conducted cultural resources inventories in the
general vicinity of the study areas.......................................A.2
Table A-2. Bibliographic list of previously recorded cultural resources.............A.12
Table B-1. Location data for newly recorded and revisited cultural resources..........B.2
Plate 1. Example of a small high angular fault, many of which are present in study area....4
iii