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8120 Gage Street* Frederick,CO 80516 <br /> Bus: (303)666-6657•Fax: (303)666-6743 <br /> Wednesday 08 March 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#4 REPSPONSE <br /> Dear Rob, <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. Raptor <br /> submitted a supplemental response to the Second Adequacy on 2 February 2023 addressing <br /> excavation setbacks from the South Platte and Big Thompson rivers. Raptor Materials received <br /> Third Adequacy Reviews dated 09 February, 10 February and 14 February 2023,which were <br /> responded to on 24 February, 2023. <br /> A Fourth Adequacy Review was received. <br /> Raptor's Fourth Adequacy response is confined to the outstanding items. <br /> Raptor Materials received Fourth Adequacy Reviews dated 6 March 2023. The items requiring <br /> a response in our fourth adequacy response are addressed by exception. Raptor's responses <br />