2020-07-22_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 7/22/2020
• Doc Name: Application
• From: Colowyo Coal Company LP
• To: DRMS
• Type & Sequence: SL19
• Email Name: ZTT
• Email Name: JDM
• Media Type: D
• Archive: No

TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................ 1
1.1 General............................................................................................................. 1
1.2 Background....................................................................................................... 3
1.3 Success Standards............................................................................................. 4
2.0 SAMPLING METHODOLOGY........................................................................... 5
2.1 Sample Site Selection/Location........................................................................... 5
2.2 Determination of Ground Cover.......................................................................... 5
2.3 Sample Adequacy Determination........................................................................ 8
2.4 Vegetation Success Evaluation ........................................................................... 8
2.5 Sedimentology Evaluation.................................................................................. 8
3.0 RESULTS...................................................................................................... 12
3.1 Phase II — Vegetation Results .......................................................................... 12
3.1.1 Phase II Bond Release Block......................................................................... 12
3.1.2 Mountain Shrub Reference Area.................................................................... 12
3.1.3 Sagebrush Reference Area............................................................................ 12
3.2 Phase II — Sedimentology Results..................................................................... 15
4.0 SUCCESS COMPARISON .............................................................................. 16
4.1 Ground Cover.................................................................................................. 16
4.2 Sedimentology ................................................................................................ 16
5.0 REFERENCES ............................................................................................... 18