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<br />• Results of Stability Analysis <br />Thetesult5"of the.'.pe~amet~ic analysis are~$hown on~Tatile-'A~be.low. Overall, <br />the calculated results indicate the existing file has adequate;:f,;aeto~s of safety. <br />TABLE A <br />SUMMARY OF PARAMETRIC ANALYSIS <br /> <br />Strength of Water Condition Safety Factor for Safety Factor for <br />Coal Waste (Deg) 2.0:1 Slope 2.5:1 Slope <br />37 degrees, 200 No Water 2.4 2.5 <br />psf cohesion <br />32 degrees, 200 No Water 2.2 2.3 <br />psf cohesion <br />37 degrees, 200 '/z Height of Slope 2.0 2.1 <br />psf cohesion <br />32 degrees, 200 Y~ Height of Slope 1.9 1.9 <br />psf cohesion <br />To summarize, the existing waste pile configuration is considered stable with <br />safety factors between 1.9 and 2.5. An infiriite slope. analysis was also performed <br />on the 2.3:1. configuration using a coal waste strength of 30 degrees with no <br />cohesion, resulting in a safety factor of 1.4. <br />LIMITATIONS <br />The analyses and conclusions presented in this report are for the conditions <br />• <br />described in the report. Variations in conditions are always possible. We believe <br />this study was performed using methods and procedures consistent with other <br />professionals practicing geotechnical engineering in this area at this time. No other <br />warranty, express or implied, is made. <br />6ASIN RESOURCES, INC. <br />CTLIT 27,79 a <br />