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TELESTO <br /> SOLUTIONS* I N ,- O k O O H AT L U <br /> April 8, 2021 <br /> Via Electronic Mail <br /> ' Mrs. Stephanie Fancher-English <br /> Loveland Ready-Mix Concrete, Inc. <br /> ' 644 Namaqua Road <br /> Loveland, Colorado 80537 <br /> Subject: Green/Croissant Cell 4 <br /> Reclamation Slopes <br /> Dear Stephanie: <br /> This letter responds to your request that I evaluate the topographical survey information of <br /> the reclamation slopes for Cell 4 of Loveland Ready-Mix Concrete, Inc.'s (LRM's) <br /> ' Green/Croissant mine (DRMS No. M2001022). CDS Engineering Corporation (CDS) <br /> generated the survey information on 1/2/2019 from elevational point measurements. It is <br /> my professional opinion that the survey was performed correctly and with more than <br /> ' enough points to accurately reflect the reclamation slopes present on 1/2/2019. <br /> My analysis is summarized in the series of cross-sections shown in the attached figure. <br /> ' The maximum bank slope is 3.1 H:1 V (Section A) and the minimum is at Section J <br /> (<5H:1 V). It is my professional opinion that given the native soils in the area, these <br /> reclamation slopes should be stable in the long-term, especially considering the additional <br /> ' rip-rap protection LRM placed and the stability enhancement expected from vegetation <br /> growth. <br /> ' Please let me know if you need anything further on this issue. <br /> Sincerely, <br /> ' Telesto Solutions, Inc. <br /> p00 REG4c� <br /> 33826 <br /> �SS70NA1-LNG <br /> ' Walter L. Niccoli, PE <br /> Principal/Senior Engineer <br /> Colorado Office (Corporate) Grand Junction New Mexico Office <br /> 7501411 Street SW 751 Horizon Court,Suite 109 1303 Pope Street <br /> Loveland,Colorado 80537 Grand Junction,Colorado 81506 Silver City,New Mexico 88061 <br /> ' 970-484-7704 1970-484-7789(FAX) 970-697-1550 575-538-56201575-538.5625(FAX) <br />