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Exhibit S - Geotechnical Stability <br />6.4.19 EXHIBITS -Permanent Man-made Structures <br />Where the mining operation will adversely affect the stability of any significant, valuable <br />and permanent man-made structure located within two hundred (200) feet of the <br />affected land, the applicant may either: <br />(a) provide a notarized agreement between the applicant and the person(s) having <br />an interest in the structure, that the applicant is to provide compensation for any <br />damage to the structure; or <br />(b) where such an agreement cannot be reached, the applicant shall provide an <br />appropriate engineering evaluation that demonstrates that such structure shall <br />not be damaged by activities occurring at the mining operation; or. <br />(c) where such structure is a utility, the Applicant may supply a notarized letter, on <br />utility letterhead, from the owner(s) of the utility that the mining and reclamation <br />activities, as proposed, will have "no negative effect" on their utility. <br />6.5 GEOTECHNICAL STABILITY EXHIBIT <br />1) On a site-specific basis, an Applicant shall be required to provide a geotechnical <br />evaluation of all geologic hazards that have the potential to affect any proposed <br />impoundment, slope, embankment, highwall, or waste pile within the affected <br />area. The Applicant may also be required to provide a geotechnical evaluation <br />of all geologic hazards, within or in the vicinity of the affected lands, that may be <br />de-stabilized or exacerbated by mining or reclamation activities. <br />(2) On a site-specific basis, an Applicant shall be required to provide engineering <br />stability analyses for proposed final reclaimed slopes, highwalls, waste piles and <br />embankments. An Applicant may also be required to provide engineering stability <br />analyses for certain slopes configuration as they will occur during operations, <br />including, but not limited to embankments. Information for slope stability <br />analyses may include, but would not be limited to, slope angles and <br />configurations, compaction and density, physical characteristics of earthen <br />materials, pore pressure information, slope height, post-placement use of site, <br />and information on structures or facilities that could be adversely affected by <br />slope failure. <br />(3) Where there is the potential for off-site impacts due to failure of any geologic <br />structure or constructed earthen facility, which may be caused by mining or <br />reclamation activities, the Applicant shall demonstrate through appropriate <br />geotechnical and stability analyses that off-site areas will be protected with <br />appropriate factors of safety incorporated into the analysis. The minimum <br />acceptable safety factors will be subject to approval by the Office, on a case by- <br />case basis, depending upon the degree of certainty of soil or rock strength <br />determinations utilized in the stability analysis, depending upon the <br />consequences associated with a potential failure, and depending upon the <br />potential for seismic activity at each site. <br />Varra Companies, Inc. Heintzelman Project RMS 112 Permit Application 1 <br />2 February 2009