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INSPEC13307
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Last modified
8/24/2016 9:14:54 PM
Creation date
11/18/2007 9:00:05 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981046
IBM Index Class Name
Inspection
Doc Name
INSPECTION REPORT
Inspection Date
9/5/1997
Media Type
D
Archive
No
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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 />This was a complete inspection of the Sunlight Mine conducted by Erica Crosby of DMG. The <br />mine is a bond forfeiture site, therefore, no company representative was present during the <br />inspection. Weather conditions on site were clear and warm. Ground conditions were dry. <br />The primary purpose of this inspection was to gather information to evaluate a reduced <br />inspection frequency for the Sunlight Mine. Rule 5.03.318) allows the Division to reduce the <br />inspection frequency at coal mines required in Rules 5.02.211) and 121. The Reduced Inspection <br />Frequency Form was completed and is attached to this inspection report for further detail. <br />Roads The upper road continues to be blocked by a small berm located at the entrance of the <br />road and appears to be obstructing vehicles from gaining access on the bench. The lower road is <br />well vegetated and access is limited. <br />Hydrologic Balance The upland diversion ditch around the north mine area has breached in the <br />portion near the road, roughly 50 feet south of the intake portal. The ditch filled up with rock <br />and sediment and diverted water down the cut slope. Gullies roughly 1 foot to 2 feet deep were <br />noted on the slope. The sediment was deposited on the bench. The cut slope consists of shale <br />material and sandstone rock. Little vegetation is in place. The remaining portion of the ditch is <br />generally in good repair. Quite a bit of sediment was noted in the channel from the smaller <br />tributaries. <br />No erosion features were noted around the intake portal or the fan portal. Refuse material is <br />eroding out from the crib wall into the county road ditch. Gullies one to two feet deep were <br />noted throughout the pile. The gully leading to the sediment pond appears to be stabilizing. The <br />pond was full of sediment, roughtly 1.5 feet from the principal spillway. The berm at the lower <br />fan area was intact. No mine water discharge was noted from the fan portal. <br />Backfilling & Grading The backfilled portals appear stable. No subsidence features were <br />noted. The wooden shelter over the lower fan area has been demolished, but the portal seal <br />remains intact. <br />Processing Waste A few of the timbers on the east end of the pile have failed. The timbers <br />were deposited in the road ditch, most likely due to the summer rain storms. Refuse material on <br />this end is eroding into the ditch. The remaining timbers in the crib wall showed no signs of <br />major instability, but erosion was noted and some of the timbers appear weak. Gullies one to <br />two feet deep were noted throughout the pile. <br />Revegetation Very little vegetation was noted on site due to the lack of topsoil. The mine site <br />is dominated by coal fines and mine debris. The upper portion of the mine site contains roughly <br />10% vegetation consisting of Cheatgrass, shrubs, Intermediate Wheat Grass, Canadian Thistle <br />and other unknown weeds. The lower portion has a higher proportion of established vegetation <br />including Intermediate Wheatgrass, Timothy, Yellow Sweet Clover and some shrubs. <br />
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