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<br /> <br /> <br />Physical Address: 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 <br />Mailing Address: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 https://drms.colorado.gov <br />Jared S. Polis, Governor | Dan Gibbs, Executive Director | Michael A. Cunningham, Acting Director <br />October 31, 2023 <br /> <br />Chris Dorenkamp <br />GCC Energy, LLC <br />6473 County Road 120 <br />Hesperus, CO 81326 <br /> <br /> <br />Re: King Coal Mine Permit No. C-1981-035 <br /> August 2023 Completion of Post Inspection Outstanding Maintenance Items Concurrence <br /> Letter <br /> <br /> <br />Dear Mr. Dorenkamp, <br /> <br />The Division received a letter from GCC on October 18, 2023, providing data and photos that the outlined <br />maintenance items below were completed. <br /> <br />7. All material removed from the northeast corner of the LRDA should not be stockpiled on top of <br />the pile during the work being conducted to re-establish the TR-27 approved design. Please place <br />the excavated material on top of the upper refuse disposal area. This will help maintain the pile’s <br />stability while the northeast corner is disturbed by the activity. <br /> <br />8. During the reconstruction of the northeast corner of the LRDA, compaction testing must be <br />performed while the lifts are created. The compaction tests are vital to ensuring the stability of <br />the LRDA is monitored. Please provide the Division with these compaction tests as the <br />northeast section of the LRDA is reconstructed. <br /> <br />9. Reach 13 must be re-established to the approved location on Map KI 007 and to the approved <br />designs from Map KI 007A. Please submit photos of the completed ditch to the Division no <br />later than November 1, 2023. <br /> <br />Photos provided with GCC’s letter show that material from the Northeast corner of the Lower Refuse <br />Disposal Area (LRDA) has been removed to re-establish the approved TR-27 design. The photos show <br />that the Swale for Reach 13 has been reconstructed in the appropriate location to separate the LRDA from <br />the East Clearwater Ditch. Material excavated from the northeast corner was placed on the Upper Refuse <br />Disposal Area during the LRDA’s reconstruction. The photos provided with GCC’s letter satisfies <br />Maintenance Item No. 7. <br /> <br />Included with the letter were six compaction tests verifying the reconstructed northeast corner of the <br />LRDA was stable. Two tests were performed on the lower reconstructed section, two tests were <br />performed on the middle of the reconstructed section, and two tests were performed on the upper <br />reconstructed section. This satisfies Maintenance Item No. 8. <br />