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-04/ <br />S cowN conwany Seneca Coal Company <br />July 10, 2013 <br />Mr. Jared Ebert <br />Division of Reclamation, Mining and Safety RECEIVED <br />1313 Sherman Street, Room 215 <br />Denver, CO 80202 JUL 12 2013 <br />E: Seneca II -W Mine Permit C -82 -057 DMSI 4F RECLAMATION <br />R <br />( ) MINI NG AND SAFETY <br />TR -80, Additional Culverts <br />Mr. Ebert, <br />Seneca Coal Company (SCC) is submitting Technical Revision No. 80 (TR -80) to add three (3) <br />additional culverts to the drainage network. Two (2) of the structures will be supplemental <br />culverts to assist the approved design and reduce /eliminate specific areas of erosion along road <br />ditches. <br />The third culvert will be a low water crossing to designed to handle base flow during the summer <br />months so that equipment can cross channel PM -2 to allow remediation and maintenance. The <br />culvert will be installed to handle a base flow of 0.31 cfs from a spoil spring along Channel PM- <br />2. The current channel PM -2 is over constructed and will handle the design spring runoff that <br />will pass over the low water crossing. <br />If there any questions please contact me at (970) 276 -5217. <br />Sincerely, <br />Roy A. Karo <br />Reclamation Manager <br />Seneca Coal Company <br />attachment(s) <br />cc: Jeffery Fleischman (OSMRE) <br />Jennifer Maiolo (BLM) <br />Seneca Coal Company • P.O. Box 670 • Hayden, Colorado 81639 <br />Telephone (970) 276 -5217 • FAX (970) 276 -5222 <br />