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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 inspection <br />and the facts or evidence supporting the enforcement action. <br />This was a partial inspection of the Deserado Mine conducted on April 28, 1999 by Mike Boulay <br />of the DMG. Scott Wanstedt of Blue Mountain Energy, Inc. was present during the inspection. <br />Weather conditions were sunny and cool. Ground conditions were wet throughout most of the <br />site due to recent rainfall. <br />Hydrologic Balance <br />Drainage control was inspected at the "D" Portal and facilities azeas. The mine site had received <br />approximately 2 inches of rain during the week prior to the inspection. Some standing water was <br />present in the facilities azea due to the recent precipitation. Site ditches and culverts were well <br />maintained and functioning properly. Pond PP-1 and Process Pond PP-2 were both holding <br />water. Sedimentation Pond DP-1 was full and discharging at the time ofthe inspection. <br />Site ditches and culverts at the East Portals azea were generally well maintained and functioning <br />properly. The catch basin on the faz west side of the East Portals azea was holding water. The <br />water was discolored, probably due to drainage from the trash dumpster located immediately up <br />gradient from the basin. The culvert that drains to the basin contained some sediment on the <br />outlet side. To ensure that the culvert and basin function properly, please continue to maintain <br />this culvert by removing accumulated sediment. <br />Refuse Disposal Area sedimentation ponds were inspected. Although some erosion is occumng <br />at several of the pond inlets, all ponds appeazed to be functioning properly. Pond RP-2/3 was <br />holding water but not dischazging (water level was approximately 5 feet below the primary <br />spillway). Some rills have formed on the settling basin dam above Pond RP-2/3. Significant <br />erosion was also noted in two of the inlet drainage channels to Pond RP-2/3. One channel that <br />enters on the south end of the pond has substantial erosion occumng that is undercutting the <br />riprap and geotextile fabric on the west side of the channel. Significant erosion is also occurring <br />in the inlet channel on the north end of the pond. Pease continue to monitor the erosion that is <br />occurring at the pond inlets and settling basin dam, and make necessary repairs to ensure that <br />these structures remain stable and in good condition. <br />The water level at Pond RP-4 was approximately 4 feet below the primary spillway. On the west <br />side of Pond RP-4 some rills and gullies have formed in the pond embankment. Options for <br />controlling this erosion and maintaining the integrity of the embankment may include, <br />establishing vegetation and/or constructing a small ditch above the embankment to divert water <br />into a drainage inlet. Also consider adding additional riprap to the drainage inlet on the north side <br />of the pond. <br />