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Mr. David W. Hunt <br /> May 13, 2018 <br /> Page 6 <br /> letter, we should be contacted in order to re-evaluate the potential affects on permanent man-made structures. Stability <br /> analyses were run at the structure in question and were not run on failure surfaces closer to the highwall. Note also that <br /> surcharge loads due to temporary material stockpiles and overburden berms were not considered in the analysis. <br /> Please call with any questions or comments. <br /> Sincerely, <br /> Civil Resources, LLC <br /> Gary Linden, P.G. <br /> Senior Engineering Geologist <br /> Attachments: Figure —Slope Stability Cross Sections Locations Plan (from mining plan) <br /> Figure —Slope Stability Cross Sections(from mining plan and XSTABL Output) <br /> Boring Locations(from existing conditions) <br /> Boring Logs(from slurry wall plans) <br /> XSTABL Model Outputs: Sections 1, 2, 3, and 4 <br /> JAHalllrwin-1051DHF-Gravel Mine1DRMS1Exhibits\Stabdity Analysis\Stability analysis report-huntwater.doc <br />