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<br /> <br /> <br /> <br /> <br /> <br />May 18, 2022 <br /> <br /> <br />Chance Allen <br />Aggregate Industries - WCR, Inc. <br />1687 Cole Blvd <br />Suite 300 <br />Golden, CO 80401 <br /> <br /> <br />Re: Morrison Quarry - File No. M -1973-021 <br /> Aggregate Industries - WCR, Inc. <br /> Technical Revision Application (TR-8) <br /> Change from LIDAR to photogrammetry data collection for biannual rock face <br />and stability monitoring inspections <br /> <br />Dear Chance Allen: <br /> <br />On May 18, 2022 the Division of Reclamation, Mining and Safety concluded its review of the <br />Technical Revision application submitted to the Division on May 16, 2022, addressing the following: <br /> <br />Change from LiDAR to photogrammetry data collection for biannual rock face and stability <br />monitoring inspections. <br /> <br />The decision reached by the Division is: approve. <br /> <br />The terms of Technical Revision No. 8 approved by the Division are hereby incorporated into Permit <br />No. M-1973-021 . All other conditions and requirements of Permit No. M-1973 -021 remain in full <br />force and effect. <br /> <br /> <br />Bond Held: $7,847,335.00 <br />Prior Liability: $7,847,335.00 <br />Change in Liability: $0.00 <br />Revised Liability: $7,847,335.00 <br />Prior Permit Acreage: 364.80 <br />Change in Permit Acreage: 0.00 <br />Revised Permit Acreage: 364.80 <br />Prior Affected Acreage: 364.80 <br />Change in Affected Acreage: 0.00 <br />Revised Affected Acreage: 364.80