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<br />i' <br />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 />This was a partial inspection of the Chimney Rock Coal Mine conducted to oversite the <br />vegetation sampling methodology and techniques employed by Greystone during the Phase 2 <br />bond release vegetation sampling task. <br />50 meter random sample transect locations were pre-determined at the Greystone office using a <br />grid system and random number generator. These transects were laid out in each parcel where <br />each parcels boundaries were determined by post-mining land use type, year seeded, major <br />geographic aspect change. Post-mining land uses are dryland pasture, irrigated pasture and <br />rangeland/wildlife. The areas seeded in 1991 did not have pre-determined random sample <br />transect locations so the sampling crew indicated they would determine the random sample <br />locations by walking, from a starting point, a number of paces that coincide with the last three <br />digits of the time shown on a digital watch, in the direction that the second hand pointed on an <br />analog watch. The transect would then be laid out in the direction shown by the second hand <br />of the analog watch. <br />The crew was observed sampling the irrigated pasture area of the alluvial valley floor (AVFI. <br />Transects were laid out as predetermined on this site. Two samples were recorded at each one <br />meter interval, along the 50 meter transect, using an ESCO point bar. <br />Productivity sampling was to be conducted on the AVF as required for phase 2 bond release. <br />The crew was to locate the .5 square meter quadrats approximately 5 meters straight out from <br />the end of each of the cover sampling transects. The vegetation within each quadrat would be <br />clipped weighed and separated by life form. Vegetation clipped would be dried six weeks and <br />reweighed to determine productivity by weight. <br />The Division dug five topsoil depth sample holes to verify replacement of six inches of topsoil on <br />the revision #1 area on the north of Barren Ridge. Topsoil depths for the five holes were: <br />1. 12 inches <br />2. 4 inches <br />3. 6 inches <br />4. 10 inches <br />5. 8 inches <br />verifying that the average depth of topsoil replacement does meet the six inch depth criteria for <br />this area. <br />