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1 <br />E <br />S ~~am Seneca Coal Company <br />December 7.2006 <br />Mr. Michael Boulay <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />{303) 866-3567 <br />RE: Seneca II Mine (Permit No. C-80-005) <br />Technical Revision No. 41(T'R-41) <br />Postmine Channel SIIPM-8 Design <br />Deaz Mr. Boulay: <br />RECEIVED <br />DEC 1 12006 <br />~ivls •.,. of Reclamation, <br />Mining and Safety • <br />Enclosed are three (3) copies of an application for a technical revision to the Seneca II Mine Permit <br />(C-80-0005). TR-41 presents a revised design for postmine channel SIIPM-8. <br />Seneca Coal Company (SCC) revised the channel design to address continued stability concerns in the <br />upper PM-8 area. SCC proposes to replace the existing meandering channels with a series of V- <br />ditches. The spatting of the V-ditches limits down-slope flow distances, which should reduce <br />vclodties and ezosive forces. The V-ditches will then convey the collected surface run-off to Channel <br />SIIPM-8. <br />Attached aze the requited application form, public notice, insertion instructions, and the <br />revised/updated material. Should you or any other member of the Division have questions regazding <br />the information, please contact me at (970) 276-5227, <br />Sincerely, y~ <br />%o7"r /lawrr- <br />Roy A. Kano <br />Reclamation Manager <br />Seneca Coal Company <br />enclosure(s) <br />cc: <br />John Husband (BI.M) <br />Carl Johnston (OSMRE) <br />Seneca Coal Company • P.O. Box 670 • Hayden, Colorado 81839 <br />Telephone (970) 276-3707 • FAX (970) 276-3014 <br />