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References Cited <br />D.C.A. D.C.A. Engineering Software, Inc. 1989. P.O. Box 955, Henniker, NH 03242 <br />P.D.S. Peabody Coal Company, 1300 S. Yale, Flagstaff, A"I_ 86001 <br />SEDCAD 4, SEDIMOT II. 1998 Civil Software Design, P.O. Box 11092, Lexington, KY 4051 <br />_~ <br /> <br />• <br />• <br />/` / <br />i~ <br />i _ i <br />• <br />12 Revised 2/99 <br />