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• SUMMARY OF
<br />Previous Investigations by CTL/Thompson, Inc-
<br />1. CTL/Thompson, Inc., "Waste Rock Pile Investigation/Design, Geotechnical and
<br />Hydrologic Investigation", prepared for Cyprus Yampa Valley Coal Company,
<br />Oak Creek, Colorado, August 14, 1992.
<br />2. Engineering and Design Manual For Disposal of Excess Spoil, prepared for
<br />Office of Surface Mining U. S. Department of the Interior, Contract Number
<br />J5110084, Report by CTLIThompson, Inc., dated November 30, 1982.
<br />3. "Excess Spoils", Job No. 56646, prepared for Energy Fuels Corporation,
<br />Steamboat Springs, Colorado, report by CTL/Thompson, Inc., dated
<br />September 11, 1979.
<br />4. "Geotechnical Evaluation of Mine Entry Vacated 8050 Pit, Colorado Yampa
<br />Coal Company, Oak Creek, Colorado", Job No. 8254, prepared for The Getty
<br />Oil company, Coal Department, Salt Lake City, Utah, report by
<br />CTL/Thompson, Inc., dated October 6, 1982.
<br />• 5. "Geotechnical Investigation, West Pit Excess Spoil Disposal Site, Colowyo
<br />Coal Mine, Moffat County, Colorado", Job No. 16,516, prepared for Colowyo
<br />Coal Company, Meeker, Colorado, report by CTL/Thompson, Inc., dated
<br />September 5, 1990, Revised March 1, 1991.
<br />6. "Density Testing of Coal Stockpiles, Colowyo Coal Mine, Moffat County,
<br />Colorado", Job No. 17,055, prepared for Colowyo Coal Company, letter by
<br />CTL/Thompson, Inc. dated September 17, 1990.
<br />7. "Densty and Stability Study Refuse Disposal Area ,New Elk Coal Mine, Las
<br />Animas County, Colorado", Job No. 17,453, prepared for Wyoming Fuel
<br />Company, Weston, Colorado, report by CTL/Thompson, Inc. dated April 29,
<br />~ 1991.
<br />8. "Geotechnical Investigation, Section 16 Excess Spoil Disposal Site, Colowyo
<br />Coal Mine, Moffat County, Colorado", Job No. 17,544, prepared for Colowyo
<br />Coal Company, report by CTL/Thompson, Inc. dated March 29, 1991.
<br />~ 9. "Underdrain Filter Requirements, West Pit and Section 16 Pit Excess Spoil
<br />Fills", Job No. 18,638, prepared for Colowyo Coal Company, letter by
<br />CTL/Thompson, Inc. dated April 27, 1992.
<br />10. Colorado Yampa Coal Company, "Area Map, Energy Mines 1, 2 and Eckman
<br />~ Park", File No. E1-OS-8301-F13, dated March 22, 1983.
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