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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 />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 <br />FAX: (303) 832 -8106 <br />January 24, 2013 <br />Roy Karo <br />Seneca Coal Company <br />37796 Routt County Road 53 <br />P.O. Box 670 <br />Hayden, Colorado 81639 <br />RE: Seneca II -W Mine; C- 1982 -057; TR79 <br />Pond 16A Slide Area As- Built, Adequacy Review No. 2 <br />Dear Mr. Karo, <br />COLORADO <br />D I V I S 16 N OF <br />RECLAMATION <br />MINING <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta Pineda <br />Director <br />The Division received your response letter to our first adequacy review for TR79 on January 18, 2013. <br />Overall, the majority of the material addresses the Division's concerns. The decision date for the <br />revision was extended until February 6, 2013. There are several items that will need to be addressed <br />prior to the Division's approval of the revision. These issues are discussed below: <br />Tab 20; Backfillin2 and Grading: <br />1. Page 18 of this tab was revised with the adequacy review response removing from the text the <br />description of Figure 20 -2; the Typical Runoff Control Structure. This description is necessary <br />in this section of the permit and should be included on this page. Please revise this page to <br />include this information and cite the location where Figure 20 -2 can be found (Attachment 20 -3). <br />2. The table of contents for this tab should be revised to indicate Figure 20 -2 can be found in <br />Attachment 20 -3. <br />3. With the response letter, you submitted Exhibit 20 -D.2A; Pond 016 Area Asbuilt plan view map. <br />Please submit a revised map with the locations of the underdrains that were constructed and the <br />abandoned wells in the area. <br />Insertion Instructions <br />4. In the original submittal, Seneca Coal Company revised Figure 20 -2; the Typical Runoff Control <br />Structure diagram. This figure was missing in the revised Insertion Instructions and should be <br />updated in Attachment 20 -3, Appendix A. <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />