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Elk Ridge Mining and Reclamation, LLC. <br />Colowyo Mine <br />Permit No. C-1981-019 <br />2018 PHASE II REVEGETATION EVALUATION REPORT <br />PHASE II BOND RELEASE BLOCK: <br />REFERENCE AREAS: <br />WP015 WPO19 MOUNTAIN SHRUB <br />WPO17 WP020 SAGEBRUSH <br />WPO18 <br />1.0 INTRODUCTION <br />Cedar Creek Associates, Inc. (Cedar Creek) was contracted in 2017 by the Colowyo Mine (Colowyo) <br />to evaluate revegetated units for Phase II bond release. Units included in this Phase II evaluation were <br />established and reclaimed between 2011 and 2014. Data collection was performed in the interest of <br />ascertaining progress toward revegetation success in accordance with Permit Section 4.15. The Phase II <br />Bond Release Block consists of 265.5 acres from 5 revegetated units that were evaluated in 2017. In <br />addition, two reference areas (Mountain Shrub — 1980 and Sagebrush — 1981) were sampled to provide <br />ground cover comparison values to facilitate an evaluation of success for the reclaimed units. The <br />sample points for the Phase II Bond Release Block and reference areas evaluated in 2017 are provided <br />on Maps 2 through 4. <br />Field sampling for ground cover was systematically conducted <br />from July 31s' through August 4th, 2017. Sampling occurred amidst the <br />peak of growth in late July and early August. Field efforts in 2017 <br />were conducted by or under the direct supervision of Cedar Creek's <br />Senior Reclamation Ecologist and Soil Specialist, Mr. Jesse H. Dillon. <br />Acreages presented in this document have been determined by <br />Colowyo Mine. Raw data tables are presented in Appendix A. <br />1 <br />Unit <br />Rrst <br />Growing <br />Season <br />Acres <br />WP015 <br />2011 <br />103.8 <br />WPO17 <br />2014 <br />12.6 <br />WP018 <br />2014 <br />31.2 <br />WP019 <br />2014 <br />22.1 <br />W PO20 <br />2014 <br />95.8 <br />Total <br />265.5 <br />