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January 5, 2012 <br />Mr. Earl Quesenberry <br />Mountain Coal Company <br />W.O. Box 591 <br />5174 Highway 133 <br />Somerset, CO 31434 <br />Attn: Mr. Quesenberry <br />Subject: Summary of Construction <br />Management and Materials Testing <br />Services, West Elk Mine Stockpile <br />Landslide, Somerset, Colorado <br />Job Number: 11 -6606 <br />This letter summarizes the construction management and materials testing GROUND <br />Engineering Consultants, Inc. (GROUND) performed for the West Elk Mine Stockpile <br />Landslide Project located in Somerset, Colorado. The construction management and <br />materials testing services were performed at times scheduled by the Owner between <br />October 21, 2011 and December 1, 2011. <br />Representatives of our office were present on a part time basis to periodically observe <br />the removal of landslide material and the placement of embankment soils and bench <br />drains. Nuclear - moisture density testing was periodically performed on the processed <br />soils. <br />Based on the final test results to date, field observations, RA's received and other <br />project documentation received from the design team, it is our opinion that the materials <br />tested and /or observed for the embankment soils and bench drains were in general <br />accordance with project plans, specifications, or applicable RFI's. <br />The observations and materials testing as indicated above were performed periodically <br />to provide data to the Owner and Contractor to assist them in evaluating the general <br />compliance of the tested materials and /or work with the contract documents at the times <br />of our observation and testing. <br />If you have any questions concerning this letter, please contact our office. <br />Sincerely, <br />GROUND Engineering Consultants, Inc. <br />0 <br />sue✓ <br />�- � - <br />Chris Hutto, C.E.T. <br />r e ®a® go•ag <br />li ® ®a <br />&. <br />Scott Richards, R.E. <br />annum 101A Airpark Dr., Unit 9, PO Box 464, Gypsum, CO 81637 Phone (970) 524 -0720 Far (970) 524 -0721 www.groundeng_com <br />Q }lice Locations: Englewood . Commerce City Loveland Granby Gypsum 6 Grand Junction m Casper WY <br />