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The results show that the lowest factor of safety (1.2) is for the pseudo-static condition of Cross <br /> Section 3, however, this FOS is actually for the inside slope of the embankment, not toward the <br /> CR81 Road. Therefore, this FOS is irrelevant to the road. The lowest FOS toward the road is 1.4 <br /> in Cross Section 1, which easily meets the DRMS requirements. <br /> In the construction of the embankment, and in the years that it has been built, no slope stability <br /> issues have been encountered. The embankment has been inspected by qualified personnel, <br /> including Jay Moore, P.E., and no problems have been reported. Due to the quality of the <br /> detailed analyses performed and the performance of the embankment to date, I certify that the <br /> East Cresson Overburden Storage Embankment(ECOSA) will not adversely affect Teller <br /> County Road 81 or 82. <br /> If any future information requires changes to this certification, or changes to the design slopes, <br /> mine plan, reclamation plan, etc., the Division will be notified and the appropriate changes will <br /> be submitted. <br /> t <br /> Date: 1/29/17 <br /> Greg Lewicki, P.E. <br /> Principal Engineer <br /> Greg Lewicki and Associates <br /> P R FG,00604. <br /> ,s <br /> +••�Y C. ••�9 <br /> 20335 <br /> saNALE <br /> 21 <br />