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Colowyo's Response: Colowyo has updated the "Change Sheet for Permit <br />Revisions, Technical Revisions, and Minor Revisions" to reflect the submittal of page <br />7-20-1 and apologizes for the oversight in the original Technical Revision 88 <br />submittal. <br />Division's Comment <br />3. Colowyo has included new SEDCAD modeling for the West Taylor Pond for the <br />10-year, 24-hour storm event that includes the proposed changes to the West <br />Taylor Fill. Colowyo must also provide new SEDCAD modeling for the 25-year, <br />24-hour storm event that includes the proposed changes to the West Taylor Fill. <br />Please provide two copies of the new SEDCAD modeling for the 25-year, 24- <br />hour storm event that includes the proposed changes to the West Taylor Fill for <br />the Division's review. <br />Colowyo's Response: Colowyo has included the requested SEDCAD model and <br />apologizes for the oversight in the original Technical Revision 88 submittal. <br />This completes Colowyo's first round of responses to the Division's completeness <br />review for TR-88. If you have any questions or require additional information, please <br />feel free to contact me at (970) 824-1529. <br />cerely, <br />Jennifer fSeku(gi-Barton <br />EAvironmental Engineer <br />Encl. 2 copies <br />Cc: file CF 1.1.2.77 <br />Colowyo Coal Company • 5731 State Highway 13 • Meeker, CO 81641 <br />T+ 1 970 824 1529 • F+ 1 970 824 1598 • http://prospect.riotinto.org/irj/portal