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3) CR821 Road owned by Teller County <br /> Teller County Road 821 is a two lane paved road located immediately northeast of the Town of <br /> Cripple Creek, as shown on Map C-la. It ends to the west where it joins with CR82 near the <br /> northwest corner of the WHEX. It is further away from pit areas than CR82 therefore the <br /> demonstration for CR82 also serves to demonstrate that CR821 will not be affected by mining <br /> activities. <br /> 4) CR81 Road owned by Teller County <br /> Evaluation of CR81 with ECOSA slope stability <br /> Teller County Road 81 has various segments which are within 200 feet of the affected area <br /> boundary. Some segments are a two lane paved road while others are a compacted two lane dirt <br /> road. The western portion of CR81 lies within 350 feet of the toe of the final buildout of the East <br /> Cresson Overburden Storage Area(ECOSA), making this the worst case potential mine facility <br /> to affect the road. This location is the segment of CR81 located immediately to the south of the <br /> intersection of Beaver Valley Road and CR82. Since the ECOSA worst case stability would <br /> affect CR81 before CR82, the ECOSA stability is evaluated for CR81. <br /> This overburden storage area is permanent and will be reclaimed to an overall slope of <br /> 2.5H:l.OV. It is currently being built with slopes and benches that will later be modified to attain <br /> the final slope. The embankment has not yet reached its full buildout design but the slope <br /> stability of this very large embankment has been analyzed originally by Adrian Brown <br /> Consultants, Inc. in 2012 and by Jay Moore, P.E. of Newfields in 2015. The design was re- <br /> analyzed by Newfields in 2016 so that the embankment could be raised from 10,565 feet <br /> elevation to 10,960 feet elevation. This review is based on evaluating this permanent design <br /> dated December 9, 2016. <br /> Samples of the overburden material and the colluvium from the site were collected and analyzed <br /> for size distribution and strength parameters. Slope stability parameters were developed and used <br /> to model the cross sections shown on the following page taken from the December 9, 2016 <br /> Report by Newfields. <br /> 11 <br />