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Prepared on behalf of the Operator by Juliet Moores <br /> Elk Creek Sand &Gravel LLC <br /> ADDENDUM TO 2018 ANNUAL DRMS REPORT <br /> Review conducted by Steven Brockman, PE,Civ. Eng. <br /> Re: DRMS Annual Report MLRB 1978-208 <br /> From Moores) <br /> To M Cunningham Sr Environmental Manager, Department Director <br /> Department of Natural Resources <br /> Division of Reclamation Mining and Safety Sent by email <br /> 11/30/18 <br /> COLORADO DRMS PERMIT# MLRB 1978-208 <br /> Observations and Comments regarding any changes observed from the <br /> Previous year to the HiGHWALL inciuding a siope stability anaiysis and <br /> Geotechnical observations, as these relate to the performance of the <br /> highwall and how installed relative to the original design criteria, and <br /> comments on the GEOLOGICAL CHARACTERISITICS, FEATURES AND <br /> LITHOLOGY of the developing deposit beyond the current position of the <br /> highwall advancing to the ESE. <br /> PREVIEW NOTE <br /> This ENGIEERING REPORT is compiled and REVIEWED and then submitted in conjunction with,and <br /> should be used in connection with,the following reports <br /> • DRMS GRADING COMPLIANCE REPORT—indicates that the grading disturbances on the parcel of <br /> land immediately adjacent to the mine permitted property are taking place primarily within the <br /> colluvium and decomposed materials that appear to the South and South-west of the primary <br /> mining activity and are not connected to the mining activity nor do they impinge on the mining <br /> activity in any manner.The excavation depth is typically 2'-0"or less and offers an insight into <br /> the limits to which the colluvium and lighter decomposed materials overlay the minable deposit, <br /> essentially providing an exposed window in the mining section in the adjacent parcel <br /> • DRMS BENCH COMPLIANCE REPORT—indicates that Benches are in place and constructed in <br /> accordance with and in compliance with the mine reclamation plan as submitted to and <br /> approved by the Board on the recommendations of the Divisions <br /> • Fox(1978)Geological Report—suggest that the materials are typically of a lower grade in the <br /> RQD value and are decomposed; such an analysis is consistent with the authors restrictive <br /> exposure to the full potential of the deposit not having the tools to develop a more <br /> comprehensive analysis as the harder, more competent material is exposed preferentially in the <br /> mined section as the highwall advances to the ESE <br />