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To: Jared Ebert <br /> Date: January 2, 2018 <br /> Page 29 <br /> RULE 6.4.19 EXHIBIT S — PERMANENT MAN-MADE <br /> STRUCTURES <br /> Comment 50 <br /> The Division could not locate a certified mail return receipt demonstrating a structure <br /> damage agreement was sent to Cindi M. Lee for their barn. Please submit evidence LRM <br /> attempted to obtain a notarized agreement with this structure owner. <br /> Response 50 <br /> Cindi M. Lee was mistakenly included in the list of structures in Exhibit S. The barn on <br /> her property is more than 200 feet from the LRM property. The revised list of parcels <br /> and structures is included in Response 2 above. <br /> RULE 6.5 GEOTECHNICAL STABILITY EXHIBIT <br /> Comment 51 <br /> DRMS has reviewed the Geotechnical Stability Analysis included in Exhibit 6.5. The <br /> following list describes the information used by the Division as presented in the permit <br /> application to evaluate slope stability for the proposed mine site. Please review the list <br /> and confirm the list is accurate. <br /> a. LRM plans to construct a compacted engineered baclfll liner of fine-grained <br /> material around the perimeter of each mined pit with a final slope of 3H:1 V. <br /> b. The stability analysis was based on fourteen (14) exploratory borings drilled by <br /> Authentic Drilling, Inc. with oversight by Telesto Solutions Inc. (Telesto). <br /> c. The exploratory borings indicated two (2) to five (5) feet of clay loam soil <br /> overlying eleven (11) to twenty-eight (28) feet of sand and gravel below the <br /> ground surface. <br /> d. Groundwater levels were measured at depths between three (3) to eight (8)feet <br /> below the ground surface. <br /> e. The stability analysis cross-sections assume the highwall will be no closer than <br /> fifty(50)feet from any permanent man-made structure. <br /> f. The final pit highwall will be no steeper than 0.5H.•1 V prior backfilling of the <br /> highwall during reclamation. <br /> g. The geotechnical stability analysis was performed by Telesto using GeoStudio <br /> software SLOPE/W. <br /> Response to DRMS comments T E L E S T C <br />