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INSPEC45829
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INSPEC45829
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Last modified
8/24/2016 9:48:46 PM
Creation date
11/18/2007 11:43:22 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981035
IBM Index Class Name
Inspection
Doc Name
Inspection Report
Inspection Date
4/27/2007
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 inspection <br />and the facts or evidence supporting the enforcement action. <br />This partial inspection of the King Coal Mine was conducted by DRMS staff from the Durango Office, <br />701 Camino del Rio, Room 125, Durango, CO 81301, phone (970) 247-5469. Operations were active <br />during the time of the inspection. <br />The refuse disposal pile appeared stable and well maintained. No surface drainage was impounded <br />on the top of the refuse disposal pile. The top of the pile was graded to direct drainage off of the pile <br />and to the south sediment collection ditch, which directs affected area drainage to the large sediment <br />pond through a series of open ditches and buried culverts. The south sediment collection ditch was <br />constructed with large angular rock placed over flter fabric. The south sediment collection ditch <br />appeared stable and well maintained, no evidence of erosion or slumping was observed. <br />The east upland diversion ditch, which intercepts upland drainage along the east side of the refuse <br />disposal pile and yard area, appeared stable and well maintained. The upper portion of the east <br />upland diversion ditch was constructed with large angular rock placed over filter fabric. The middle <br />portion of the east upland diversion ditch is a buried culvert. The culvert inlet did not have a debris <br />screen, however, the inlet appeared clear of sediment and debris. The lower reach of the upland ditch <br />is an open ditch with a sediment sump and vegetative filter. All portions of the east upland diversion <br />ditch appeared well maintained. <br />Upland drainage from the south end of the yard area is conveyed under the yard area in a buried <br />culvert. The buried culvert for the south upland drainage joins the east upland diversion ditch prior to <br />leaving the permit area. A debris screen was intact at the inlet of the south diversion culvert. <br />The large sediment pond was dry. The embankment appeared stable with no evidence of seepage, <br />slumping or erosion. Primary and secondary spillways appeared clear and functional with no <br />discharge noted. <br />The small sediment pond was holding trace quantities of water. The embankment appeared stable <br />with no evidence of seepage, slumping or erosion. Primary and secondary spillways appeared clear <br />and functional with no discharge noted. Yard drainage is routed to the small sediment pond by a <br />sediment containment berm across the haul road. The sediment containment berm appeared intact <br />and functional. <br />Drainage from the short portion of the mine entrance/haul road, located outside of the sediment pond <br />treatment area, is treated for sediment with silt fence. Evidence of affected area drainage escaping <br />the area prior to treatment was not observed. <br />
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