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8120 Gage Street• Frederick,CO 80516 <br /> Bus:(303) 666-6657 • Fax:(303)666-6743 <br /> Thursday 23 February 2023 <br /> To: Robert D. Zuber, P.E. <br /> Environmental Protection Specialist <br /> Colorado Division of Reclamation Mining and Safety <br /> Office of Mined Land Reclamation (OMLR) <br /> 1313 Sherman Street, Room 215 <br /> Denver, Colorado 80203 <br /> From: Garrett C. Varra, General Manager <br /> Raptor Materials, LLC <br /> 8120 Gage Street <br /> Frederick, Colorado 80516 <br /> Subject: Two Rivers Sand, Gravel and Reservoir Project, File No. M-2022-013, 112c Permit <br /> Application Adequacy Review#3 REPSPONSE <br /> Dear Rob, <br /> The following includes notes addressing both the supplemental Second Adequacy response <br /> submitted to the DRMS on February 02, 2023 and the follow up Third Adequacy response. For <br /> reasons unknown, and upload error to the DRMS file transfer space did not result in a cover <br /> letter and Exhibit G Map being available to the DRMS. <br /> The Division of Reclamation, Mining and Safety (Division/ORMS), Office of Mined Land <br /> Reclamation(OMLR);reviewed the contents of the Original 112c permit application for the Two <br /> Rivers Sand, Gravel and Reservoir Project (TRP), File No. M-2022-013 and submitted comments <br /> via Adequacy Letters of 24 June and 5 August 2023 which were responded to by Raptor <br /> Materials on 6 September 2022. Raptor Materials received a Second Adequacy Review dated 17 <br /> October 2022 which were responded to by Raptor Materials on 4 January 2023. In addition to <br /> the Second Adequacy Review dated 17 October 2022, DRMS on November 17, 2022 provided <br /> an additional comment on the berm failure analysis included in the application. <br /> In the November 17, 2022 comment, DRMS challenged the validity of the engineered design <br /> approach taken by Flow Technologies despite having accepted it as valid in the past. Raptor <br /> Materials believes the approach is valid however appreciates DRMS recognition of the impact <br /> to Raptor's available resource and the intent of Title 34 both in fostering and encouraging <br />