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CONCLUSIONS AND RECOMMENDATIONS <br />Case 1A - The resulting static condition safety factors of 1.47 and 1.57, for wet mining <br />and dewatered conditions respectively, are above the SEO minimum requirement of <br />1.25 for an embankment during construction. The resulting pseudo-static condition <br />safety factors of 1.21 and 1.37, for wet mining and dewatered conditions respectively, <br />are above the SEO minimum requirement of 1.0 for an embankment subject to <br />earthquake loading. The proposed interim minimum setback for mining of 120 feet from <br />the final mining limit (170 feet from the south property line) is satisfactory. <br />Case 2A - The resulting static condition safety factors of 1.45 and 1.51, for wet mining <br />and dewatered conditions respectively are above the SEO minimum requirement of <br />1.25 for an embankment during construction. The resulting pseudo-static condition <br />safety factors of 1.18 and 1.33, for wet mining and dewatered conditions respectively, <br />are above the SEO minimum requirement of 1.0 for an embankment subject to <br />earthquake loading. The proposed interim minimum setback for mining of 90 feet from <br />the final mining limit (130 feet from the existing ROW) is satisfactory. <br />Case 3A - The resulting static condition safety factors of 1.47 and 1.57, for wet mining <br />and dewatered conditions respectively, are above the SEO minimum requirement of <br />1.25 for an embankment during construction. The resulting pseudo-static condition <br />safety factors of 1.21 and 1.37, for wet mining and dewatered conditions respectively, <br />are above the SEO minimum requirement of 1.0 for an embankment subject to <br />earthquake loading. The proposed interim minimum setback for mining of 120 feet from <br />the final mining limit (247 feet from the property line) is satisfactory. <br />Case 4A - The resulting static condition safety factors of 1.45 and 1.62, for wet mining <br />and dewatered conditions respectively, are above the SEO minimum requirement of <br />1.25 for an embankment during construction. The resulting pseudo-static condition <br />safety factors of 1.18 and 1.42, for wet mining and dewatered conditions respectively, <br />are above the SEO minimum requirement of 1.0 for an embankment subject to <br />earthquake loading. The proposed interim minimum setback for mining of 110 feet from <br />the final mining limit (260 feet from the existing gas well) is satisfactory. <br />1' Broken Arrow Investments, LLC - Derr Pit - M-2008-17 <br />J&T Consulting, Inc. Technical Revision No. 1- Slope Stability Analysis