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September 29, 2015 <br />1.0 Introduction <br />In compliance with Rule 4.09.1 (11) of the Regulations of the Colorado Mined Land Reclamation <br />Board for Coal Mining, a quarterly inspection and report on the construction and associated <br />activities of the Horse Gulch Fill (HGF) at Trapper Mine in Craig, Colorado has been completed. <br />The quarterly inspection was conducted on September 29, 2015, by Tonia M. Perkins, a <br />licensed professional engineer in the State of Colorado. Construction activity related to the fill <br />has been consistent with the approved design. Details of this design can be found in Agapito <br />Associates, Inc.'s (AAI) Horse Gulch Fill Stability Analysis, dated May 29, 2009. <br />No appearances of instability, structural weakness, or other hazardous conditions were <br />observed. Both the south west side of the dump and the north east spoil side of the dump <br />were inspected this quarter. The area where cracks were detected on the top south portion of <br />the dump during the first quarter of 2013 inspection was checked. There was no additional <br />cracking found. The two spots above the 7350' elevation on the south side of the dump that <br />showed some differential settling in the second quarter of 2013 was inspected. Neither site <br />showed any additional settling (Photographs 1 and 2). Monitoring these areas on a regular <br />basis will continue. The area where a spring was discovered during the third quarter 2011 <br />inspection was inspected. There was no water flow (Photograph 3). <br />, 'f,00 400 <br />Photograph 1: South Site above the 7350 Bench Elevation (9/29/2015) <br />2 <br />