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7.0 REFERENCES
<br />Buckhorn Geotech, Inc. (BGI), 2006. " Geotechnical Report: Stability Evaluation of Coal Waste
<br />Disposal Area, Bowie No. 2 Mine, Delta County, Colorado ", report dated February 15,
<br />2006.
<br />Buckhorn Geotech, Inc. (BGI), 2007. " Geotechnical Report: Stability Evaluation of Coal Waste
<br />Pile No. 4, Delta, County, Colorado ", report dated February 1, 2007.
<br />Buckhorn Geotech, Inc. (BGI), 2008. "Revised Stability Evaluation for Coal Mine Waste Disposal
<br />Area No. 2, Bowie No. 2 Mine, DRMS Permit C- 1996 -083, Delta County, Colorado ",
<br />report dated September 22, 2008.
<br />Colorado Division of Reclamation Mining and Safety (DRMS), 2005. "Regulations of the
<br />Colorado Mined Land Reclamation Board for Coal Mining ", Denver, Colorado, Revised
<br />September 14, 2005.
<br />Dunrud, C. Richard, 1989. "Geologic Map and Coal Stratigraphic Framework of the Paonia Area,
<br />Delta and Gunnison Counties, Colorado ", United States Geological Survey, Map C -115,
<br />1989.
<br />Rocscience, 2004. "Slide 2D limit equilibrium slope stability for soil and rock slopes, version
<br />5.040 ", Rocscience, Inc., 2004.
<br />8.0 CLOSING
<br />I, Brett R. Byler, a duly registered professional engineer in the State of Colorado ( #39291),
<br />have directly supervised the preparation of this report and attached documents. The
<br />information presented is to the best of my knowledge, accurate and conforming to the State of
<br />Colorado "Regulations of the Colorado Mined Land Reclamation Board for Coal Mining" as
<br />administrated by the Colorado Division of Reclamation, Mining and Safety.
<br />Respectfully Submitted,
<br />BUCKHORN GEOTECH, INC.
<br />[ELECURC ECAL V SUB H M 'SE"D
<br />Brett R. Byler, P.E.
<br />Geotechnical Engineer
<br />Reviewed by:
<br />Thomas E. Griepentrog, P.E., P.G.
<br />Principal
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<br />Bowie No 2 Refuse Pile No 4 2009 Revised stability.doc
<br />Project #06- 481 -003
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