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WESTERN FUEIS-COLORADO, ILO <br />April 2, 2013 <br />Dear Ms. Talvitie: <br />Sent via FedEx and Email <br />Ms. Marcia Talvitie <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />Durango Field Office <br />691 CR 233, Suite A -2 <br />Durango, Colorado 81301 <br />P.O. BOX 33695 DENVER, COLORADO 80233 -0695 303 - 452 -6111 <br />REC IV!D <br />APR 0 9 2013 <br />Division of Reclamation, <br />Mining & Safety <br />Subject: New Horizon North (NHN) Mine (Permit No. C- 2010 -089) <br />Technical Revision No. 1 (TR -01) Pond NHN -001 As -Built Certification - <br />Response to Preliminary Adequacy Review 2 of March 11, 2013 <br />In response to your letter dated March 11, 2013 from the Division regarding the above subject <br />matter, Western Fuels respectfully submits revisions to SEDCAD demonstrations, Map <br />2.05.3(4) -6 and Appendix 2.05.4(4) -6 text. <br />The following addresses the specific adequacy comments made by the Division in the March 11, <br />2013 letter restated below, followed by WFC responses: <br />Rule 2.05.3(4) and 4.05.9 Ponds and Impoundments <br />5. DRMS: Please include design information for the emergency spillway channel to <br />indicate the flow depth and demonstrate adequate embankment height to ensure 1 ' of <br />freeboard, as required by Rule 4.05.9(7)(d). <br />1 <br />COLOWYO MINE <br />5731 STATE HIGHWAY 13 • MEEKER, CO 81641 • 970 - 824 -1500 <br />NEW HORIZON MINE <br />P.O. BOX 628 • NUCLA, CO 81424 • 970 - 864 -2165 <br />