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3. Colowyo has provided a letter from Shannon and Wilson, Inc regarding the <br />stability of the East and West Taylor Fills, which are proposed to be <br />undermined by the highwall miner. This letter provides a statement on page 2 <br />that the Shannon and Wilson believes that there will be no problems with the <br />fills' "global stability" based on their review of reports prepared by Agapito <br />Associates, Inc. The referenced reports are the "Geotechnical Design and <br />Operational Considerations for Highwall Mining, West Pit South, F12 and E2 <br />Seams" (23 November 2005) and Addendum (13 April 2007). The Division <br />does not have a copy of either of these reports. Please forward copies of these <br />reports to the Division for review. <br />4. Colowyo has not provided the Division with a geotechnical design report for <br />the proposed highwall activities in the South Taylor Pit. This report is <br />necessary to ensure that Colowyo will be able to meet the performance <br />standards detailed in Rule 4.23.2. Please provide the Division with a copy of <br />a geotechnical report for the South Taylor Pit highwall mining for review. <br />This concludes the incompleteness review for Technical Revision 77. As stated above, <br />once the Division has received the above requested information, a second completeness <br />review will begin. Please contact me at (303)866-3567 X8145 if you have any questions <br />or need any additional information. <br />Sincerely, <br />James R. Stark <br />Environmental Protection Specialist <br />cc: Sandy Brown