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I <br />Spring 2014 Subsi nce and Geologic Field Observations <br />South of Divide nd Dry Fork Mining Areas (E -Seam) <br />3.0 OVERVIEW OF SPRING 2014 FIELD STUDIES <br />This subsidence report is the first of tWo reports to be generated based on 2014 calendar year <br />observations. Biannual reporting of subsidence related observations have occurred since spring <br />2007. In accordance with MCC's Colorado Division of Reclamation, Mining and Safety <br />(CDRMS) permit, subsidence reports ore to be submitted by April 30th (for preceding fall <br />monitoring) and September 30'x' (for preceding spring monitoring). Spring observations are <br />regularly hampered by limited access dine to snow or muddy conditions and fall observations are <br />typically scheduled around the various bunting seasons. Conditions were such this year that the <br />spring 2014 field observations were madle on June 23rd and 24th. <br />Prior field observations and experience in the West Elk Mine area over the last nineteen years' <br />(1996 to 2014 inclusive) indicate that subsidence features (cracks and bulges) are most visible on <br />roads and trails, where the ground is mote compact and free of brush. These areas were therefore <br />selected for observation to most efficiently obtain maximum subsidence information. Other more <br />obvious subsidence features like rockfalls and landslides are generally observable from roads and <br />trails or from overview locations which )have, and continue to be, established for this purpose. <br />Spring 2014 subsidence observations were performed in the SOD and Dry Fork mining areas. The <br />Apache Rocks and Box Canyon B -seam mining areas were not visited and are not planned to be <br />visited again unless there is a substantial change in conditions. As a consequence, previously - <br />provided mapping associated with B- seaIra longwall mining have been excluded from this report. <br />These maps can be found in reports priorlto 2013. The discontinuation of subsidence observations <br />in the B -seam mining areas prompted nalming convention changes for traverses and photographic <br />observations points which have been relatively constant for several years. An attempt will be made <br />to maintain these new names as the E -steam mining activities in the SOD and Dry Fork mining <br />area continue. <br />'Annual subsidence and geologic hazard repor� are kept at Mountain Coal Company, LLC and at the Colorado <br />Division of Reclamation, Mining, and Safety, Os well as exhibits to the permit document (Exhibits 60, 60A, 6013, <br />60C, 60D, and 60E). <br />831 - 032.795 Wright Water Engineers, Inc. Page 6 <br />September 2014 <br />