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III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the <br />inspection and the facts or evidence supporting the enforcement action. <br />The field portion of the Phase 1 bond release inspection evaluated <br />the overall compliance with the approved backfillinq and grading <br />plan, including cross-section and profile gradients, the success of <br />the reconstructed landscape in achieving slope stability and <br />covering all highwalls, the effectiveness of the regraded <br />topography in controlling erosion on the regraded slopes and in the <br />rebuilt drainages, the blending of the regraded landscape with the <br />surrounding countryside, and the proper functioning of the drainage <br />and sedimentation control system. <br />The inspection began at the mine site office with a review of the <br />as-built topography maps, the approved post-mining topography maps, <br />and the pre-mining topography maps. The cross-section and profile <br />maps, constructed from the approved post-mining topography and the <br />as-built topography, were also reviewed. Although these maps will <br />be reviewed further in the Division's office, as far as the map <br />inspection in the field was concerned, the approved post-mining <br />topography appeared to approximate the pre-mining topography, and <br />the as-built post-mining topography appeared to approximate the <br />approved post mining topography. <br />Examination of the cross-section and profile maps showed that the <br />as-built and approved gradients generally matched. However, several <br />locations on the cross-sections and one location on the East Pyeatt <br />longitudinal profile showed a difference in the local gradients for <br />the approved post-mining and the as-built data, and a difference of <br />about 50 feet between the approved and the as-built elevations. <br />Trapper personnel commented that there can be an apparent <br />difference in elevations due to the mapping methodology. This will <br />need further investigation. <br />The drainages which contain the Phase 1 and Phase 2 bond release <br />acreages are West Buzzard, East Buzzard, Far East Buzzard, Coyote:, <br />No Name, Johnson, West Pyeatt, Middle Pyeatt, and East Pyeatt. All <br />of these drainages were walked, with emphasis placed on the lands <br />submitted for Phase 1 and Phase 2 release. <br />None of the inspected lands showed any signs of structural <br />instability, including the former slump area above the ash pit. <br />Trapper submitted a report that detailed the results of the visual <br />and hydrologic monitoring that has been performed at the slump area <br />since monitoring began in October 1995. The Division has agreed <br />2 <br />