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mining sequence in the South Taylor Pit on page South Taylor/Lower Wilson - Rule 2, <br />Page 104. <br />Response: This section of text has been updated to reflect the changes associated with TR-81, <br />46. In Exhibit 7-140 on pages 1-19 Colowyo discusses the Section 16 Pond Ditch and its <br />associated extension (approved with Technical Revision 71). In this section Colowyo <br />discusses that this ditch extension will be mined through as a result of the advancing South <br />Taylor Pit. With the changes to the mine plan proposed with Technical Revision 81 (on <br />Map 23A), Colowyo will no longer be mining through the Section 16 Pond Ditch extension. <br />Please change the text in Exhibit 7-140 on pages 1-19 to correctly state that the Section 16 <br />Pond Ditch extension will not be mined through, based on the proposed mine plan. Please <br />discuss how long the ditch extension will remain. Please provide a detailed discussion of <br />how and when the Section 16 Pond Ditch extension will be reclaimed. <br />Response: This response will be provided upon finalization of the hydrologic design. <br />47. With the submittal of the responses for Technical Revision 81, Colowyo is proposing to <br />decrease the limits of mining in the South Taylor Pit. The decrease includes approximately <br />358 acres in the east/southeast portion of the pit and approximately 92 acres in the west <br />portion of the pit. Colowyo has not submitted a revised revision application noting these <br />changes. Please submit a revised technical revision application which correctly notes the <br />changes to the affected and disturbed acres as a result of the changes proposed in <br />Technical Revision 81. <br />Response: A revised technical revision application has been added to this submittal. The revised <br />application reflects the appropriate reduction in acreage levels. <br />Colowyo apologizes for the inconvenience, but do to unforeseen circumstances, the <br />hydrology portion of this technical revision will take additional time to complete. The <br />hydrology, as well as a new index sheet will be sent as an attachment to this submittal <br />within 10 days of this initial package being sent. <br />Included with this package is a portion of the pertinent material associated with this revision <br />application for incorporation into the permit. <br />Should you have any questions or require additional information, please feel free to contact <br />me at (970) 824-1529. <br />Sincerely, <br />J nifer S ulsk arton <br />ironmental Engineer <br />Encl. 2 copies <br />Cc: file CF 1.1.2.70