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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />C O L O RA D O <br />D I V I S I O N o f <br />Denver, Colorado 80203 <br />RECLAMATION <br />Phone: (303) 866 -3567 <br />M IN I NIN G <br />N <br />FAX: (303) 832 -8106 <br />SAFETY <br />December 6, 2012 <br />John W. Hickenlooper <br />Governor <br />Roy Karo <br />Seneca Coal Company <br />Mike King <br />P.O. Box 670 <br />Executive Director <br />Hayden, Colorado 81639 <br />Loretta Pineda <br />Director <br />RE: Seneca II -W Mine; C- 1982 -057; TR79 <br />Pond 16A Slide Area As- Built, Adequacy Review <br />Dear Rov, <br />The Colorado Division of Reclamation, Mining and Safety received Technical Revision No. 79 (TR79) on <br />November 6, 2012. The Division deemed the application complete on November 8, 2012. There are several <br />items that will need to be addressed prior to the approval of the technical revision: <br />1. Please submit maps with the station locations depicted for the road profiles submitted with Exhibit No. <br />20 -3. <br />2. Tables 13 -5 and 13 -7 -1 were updated to reflect the addition of a new culvert, PM -18. Additionally, the <br />table was revised so that the cells for information pertaining to PM -16 are now blank. PM -16 has been <br />physically removed from its location (NE inlet to Pond 006), so it is appropriate that the tables no longer <br />contain design information for the culvert. The tables should be revised to clarify that the culvert was <br />removed. <br />Figure 20 -2 is located in two places in the permit, once within the text of Tab 20 and again in Tab 20 <br />Attachement 20 -3, Appendix A. This figure should be placed in one location within the permit to avoid <br />confusion. The Division believes the most appropriate place to put this figure is in Tab 20; Attachement <br />20 -3, Appendix A. The table of contents for Tab 20 will need to be revised. Page 18 of Tab 20 will also <br />need to be updated to cite the location of Figure 20 -2 and the current Figure located in the Text of Tab 20 <br />will need to be removed. <br />4. Maps 13 -2 and 20 -2 show culvert PM -16. Please revise the maps to omit culvert PM -16. <br />5. Also on Tables 13 -5 and 13 -7 -1, culvert K -1 remains on this table. This culvert was removed with the <br />implementation of the Pond 016 area slide remediation plan. The tables should be updated accordingly. <br />6. The design information for culvert PM -18, for Attachment 13 -7, should have page numbers. Please <br />revise the design to include pagination. The Division's copy of the permit application package indicates <br />that the first page of the design should begin with 13 -7 -274. <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />