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Mr. Mark Johnson <br /> January 2 , 2014 <br /> Page 6 <br /> LIMITATIONS <br /> Our review is based on regional geologic mapping, present mining plans, borehole data from Northern Colorado <br /> Geotech, and stability analyses using typical strength parameters for the various strata in the critical sections. <br /> Should the mining plans change or subsurface conditions vary from those portrayed in this letter,we should be <br /> contacted in order to re-evaluate the potential affects on permanent man-made structures. Stability analyses were <br /> run at the structure in question and were not run on failure surfaces closer to the highwall. Note also that surcharge <br /> 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 /> Andy Rodriguez, P.E. <br /> Civil Engineer <br /> Attachments: Figure 1 —Slope Stability Cross Sections Locations PLAN <br /> Figure 2—Slope Stability Cross Sections <br /> NCG Boring Locations <br /> Boring Logs <br /> XSTABL Model Output:AA, BB, CC, DID, EE, and FF <br /> J:IBestway-213\Firestone-Shores\shores-burch amendment\DRMS Amendment Burch Property\2013 application\DRMS\Exhibits\Stability Analysis\Stability analysis <br /> report-Shores doc <br />