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Pe_y <br />PEABODY COALCOMPANY <br />Western Dlvislon <br />_~ <br />. ~n ~: <br />Ci a Sri` Ex~ ~ .. <br />~sn <br />l;j~ 11~~1 <br />:'`i '~ ~-:'- 4i <br />REC;LPt'.9:~ f ~["d v <br />September 30, 1987 <br />Mr. Peter O'Connor <br />Colorado Mined Land Reclamation Division <br />1313 Sherman Street <br />Denver, CO 80203 <br />RE: Swell Factor Study, Permit C-81-008 <br />Dear Mr. O'Connor: <br /> <br />1300 Soufn vale <br />Flagstaff. Arizona 86001 <br />(602) 77a-5253 <br />Pursuant to commitments in the approved Nucla permit <br />revision, and subsequent conversations with you, the above <br />study has been performed. The results of this study show an <br />actual swell factor as measured from field data and <br />presented in the enclosed Attachment No. 1 to be almost <br />identical to the swell factor estimated and used in the <br />development of the postmining topography. <br />Should you have questions, please call me. <br />Sincerely, <br />~~ <br />Fred Fest <br />Manager <br />Compliance Engineering <br />bd <br />P~D~ <br />Enclosure <br />