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CONCLUSIONS AND RECOMMENDATIONS <br /> Mining Conditions: <br /> Case SS-1 —At a setback of 53 feet, the lowest resulting static condition safety factor of <br /> 1.92 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a <br /> critical structure. The lowest resulting pseudo-static condition safety factor of 1.53 <br /> exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical <br /> structure subject to earthquake loading. The proposed setback of 53 feet from the gas <br /> line is satisfactory. <br /> Case SS-2 —At a setback of 91 feet, the lowest resulting static condition safety factor of <br /> 2.14 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a <br /> critical structure. The lowest resulting pseudo-static condition safety factor of 1.55 <br /> exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical <br /> structure subject to earthquake loading. The proposed setback of 91 feet from the gas <br /> line is satisfactory. <br /> Case SS-3 —At a setback of 61 feet, the lowest resulting static condition safety factor of <br /> 1.96 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a <br /> critical structure. The lowest resulting pseudo-static condition safety factor of 1.52 <br /> exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical <br /> structure subject to earthquake loading. The proposed setback of 61 feet from the gas <br /> line is satisfactory. <br /> Case SS-4 —At a setback of 46 feet, the lowest resulting static condition safety factor of <br /> 1.91 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a <br /> critical structure. The lowest resulting pseudo-static condition safety factor of 1.52 <br /> exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical <br /> structure subject to earthquake loading. The proposed setback of 46 feet from the gas <br /> line and lift station is satisfactory. <br /> Case SS-5 —At a setback of 45 feet, the lowest resulting static condition safety factor of <br /> 1.89 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a <br /> critical structure. The lowest resulting pseudo-static condition safety factor of 1.51 <br /> exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical <br /> structure subject to earthquake loading. The proposed setback of 45 feet from the gas <br /> line is satisfactory. <br /> IHC Scott,Inc —Bernhardt Sand and Gravel Pit <br /> J&T Consulting, Inc. age <br /> Slope Stability Analysis <br />