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<br />• <br /> <br />RESUhTS AND CONCLUSIONS <br /> <br />Based on our laboratory finding as well as our stability <br />analysis of the cross-sections, we believe that the refuse <br />disposal area is and will remain structurally sound. Results <br />of our computer analysis indicate that the least stable slopes, <br />as determined from the cross-sections provided for our use, <br />have a minimum factor of safety of 2.90 based on the conditions <br />discussed previously and shown in Figure 2. Further, based <br />on our analysis, these slopes should be safe during all phases <br />of the construction. <br />GENERAL INFORP1ATION <br />The results of our analysis are based primarily on the <br />information obtained from our laboratory testing of soil <br />samples provided by the Grand P1esa Coal Conpany as well as <br />from information obtained from cross-sections of the refuse <br />• disposal area provided caith the samples. Should there be <br />any changes made concerning the final geometry of the slopes, <br />we should be notified to access the resultinp_, change in <br />stability. <br />ARI-?STRONG ENGINEERS AND ASSOCIATES, INC. <br />/,' ~ / /~ ' <br />J <br />Byron [d. Kelly <br />Geotechnical Engineer <br />Approved Bv: /-, <br />~~~ ~ ~ ~iL/ ~2~~~=~ <br />Edward A. Armstrong, PE-LS <br />President <br />• <br />-5- <br /> <br />BFIK / kr <br />