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`ENECA <br />ilimiaw Coal Company <br />November 5, 2012 <br />Mr. Jared Ebert <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80202 <br />RE: Seneca II -W Mine (Permit C -82 -057) <br />TR -79, Pond 016A Slide Area As -Built <br />Mr. Ebert, <br />Seneca Coal Company (SCC) is submitting Technical Revision No. 79 (TR -79) to document the <br />remediation of the Pond 016A slide area. The attached information includes a summary of the <br />construction activities, maps showing the structure locations and postmining topography, and <br />documentation from NWCC (engineering firm) regarding material placement and compaction <br />results and recommendation to delay topsoil replacement for a year. <br />Also attached is an updated Surge Structure Construction revision to allow the dewatering pipes <br />though the embankment to be increase in size if necessary. This will result in increased channel <br />stability during high - intensity storm events. <br />If there any questions please contact me at (970) 276 -5217. <br />Sincere <br />attachment(s) <br />rte/ <br />Roy A. Karo <br />Reclamation Manager <br />Seneca Coal Company <br />cc: Foster Kirby (OSMRE) <br />Jennifer Maiolo (BLM) <br />Seneca Coal Company <br />Seneca Coal Company • P.O. Box 670 • Hayden, Colorado 81639 <br />Telephone (970) 276 -5217 • FAX (970) 276 -5222 <br />RECEIVED <br />DIv :s,of Ot <br />Mining 1 S F <br />