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Ill. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made during the <br />inspection. Comments also describe any enforcement actions taken during the inspection and the facts or <br />evidence supporting the enforcement action. <br />Notice of Violation CV-2003-007 is being issued for failure to comply with permit conditions, <br />failure to complete rough backfilling and grading within 180 days following coal removal, and <br />for failure to conduct topsoil redistribution and seeding according to reclamation schedule and <br />established timeframes. <br />Please complete backfill and grading, topsoil redistribution, and seeding in all areas of the Yoast <br />Mine in accordance with the approved backfill and grading plan and schedule depicted on <br />Exhibit 19-1A. <br />Slides and Dama¢e <br />The slide azea below the Haul Road D embankment above Pond 012 was inspected. This slide <br />initially occurred in Mazch 2000, and was detected on the afternoon of Mazch 6, 2000 during a <br />DMG inspection. Following the March, 2000 inspection, the DMG requested that SCC submit <br />the following: 1) results of monitoring and geotechnical analyses that had been conducted to <br />date, 2) the As-Built Certification for Pond 012, and 3) a technical revision for restoration of the <br />slope above Pond 012 supported by a geotechnical analysis and stability analysis. SCC <br />responded by submitting TR-18 providing the remedial repair plan and slope stability analysis for <br />the landslide azea above Pond 012. The report and repair plan were prepared by Montgomery <br />Watson Harza (MWH) for SCC. This technical revision (TR-18) was approved on October 3, <br />2001 and was incorporated into the permit as Attachment 13-12B, Pond 012 Landslide Repair <br />Plan and Subsequent Slope Stability Analysis. In this attachment several slope stabilization <br />methods were proposed. However, none of the slope stabilization methods were ever fully <br />implemented. Only preliminary efforts have been undertaken to stabilize the slope. These have <br />included regrading of the failed slope, hydro mulching of the failed slope, moving the Haul Road <br />D slightly further into the hill to the east and building a safety berm along the road embanlanent, <br />canting the road surface to an inside ditch, and building a road drainage run out above the slide <br />area on the outside edge of the road to further prevent surface water infiltration on the safety <br />berm and slide damaged area. <br />Slope stabilization methods that were proposed for the slide include: slope flattening, toe <br />reinforcement, slope buttressing, stone or concrete columns, and subsurface drainage. Of these <br />alternatives, only slope flattening was partially implemented by regrading the failed slope. It <br />should be noted that the slope flattening alternative also indicated that intermediate benches may <br />be included to reduce the average slope and the unstable soil mass would be removed and <br />compacted. The DMG does not concur that the slope flattening alternative was ever fully and <br />successfully implemented at the site of the slide. <br />