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Mountain Region AGGREGATE 1687 Cole Boulevard Phone:303-985-1070 <br /> INDUSTRIES Suite 300 Fax:303-716-5299 <br /> Golden,CO 80401 www.aggregate-us.com <br /> RECEIVED <br /> Certified mail return receipt requested 7020 1810 0000 4174 0544 JUN 14 2021 <br /> June 10, 2021 <br /> aVISION OF RECLAMATION <br /> MINING&SAFETY <br /> Mr. Patrick Lennberg <br /> Division of Reclamation Mining and Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Re: Permit Number M-2004-031 — Hazeltine Mine <br /> Technical Revision TR-08 Request to update Reclamation Plan Map <br /> Dear Patrick: <br /> Aggregate Industries-WCR Inc submits this request to update the Reclamation Plan Map for <br /> the Hazeltine Mine Permit Number M-2004-031, to reflect the current infrastructure and <br /> piping of the Orr Drain construction. <br /> If you have any questions or require additional information regarding this technical revision, <br /> please contact me at 214-213-7859 or by email at Kimberly.dennis@lafargeholcim.com. <br /> ISincerely, <br /> Kimberly Dennis <br /> Environmental Director <br /> Enclosures: <br /> • Technical Revision form <br /> • Technical Revision fee payment $216 <br /> • Drawings C400, PP003, ECO02 <br /> cc: Elena Acker, Josh Redman, City of Thornton (via e-mail) <br /> Delivering Value A member of the Holcim Group <br />