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State Rea. <br />the fill has been constructed as specified in the design • <br />approved by the Division. The report will include a description <br />of any appearances of instability, structural weakness, and <br />other hazazdous oand_itions observed during the inspection. A <br />Dopy of the report will be retained at the mine site. <br />The Wolf Creek Fill was inspected quarterly during critical <br />oon~iction periods as listed above. After the majority of the <br />Wolf Creek Fill was constructed and the underdrain was c~q~leted <br />(August 1987), work on the area ceased. Consequently, the <br />quarterly inspections also ceased. Minim has been wn~leted <br />adjacent to the fill and underdrain area, and therefore, <br />additional spoil will not be placed above the underdrain or in <br />the fill area. Work remaining in the area will be limited to <br />reclamation operations. The inspections will be reinitiated <br />when these operations affecting the Wolf CrePJc Fill or <br />underdtain as listed in 1) through 5) reccnt¢nertoe. These • <br />inspections will be conducted quarterly during critical <br />construction periods. Peabody will monitor the Wolf Creek Fill <br />quarterly for one year after final revegetation. Peabody will <br />then submit a request to CDM&G for approval to cease inspections <br />of the Wolf Creek Fill. <br />2.05.4(2) POS'Il~'IITTaIG TOPOGRAPHY. The Postrnining Contour Map, <br />(c) F~d~ibit 12-9 was developed by using a series of range diagrams <br />constructed perpendicular to the proposed mining pits. <br />The anticipated swell factor used in design of the postrnine <br />surface configuration at the Wadge and Wolf Creek pits is 15.3 <br />and 19.8 percent, respectively. The Wadge swell factor was <br />ccn~uted by averaging the actual swells measured from five <br />cross-sec,-tions of a previously mined area of Wadge Coal in the <br />F}i of Section 34 a~ W= of Section 35 (see F~dzibit 12-3 for <br />location). The cross-sections and irrlividual swell factors are • <br />12-61a Revised 10/22/92 <br />