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ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: New Elk <br />NPDES ID. No.: None: Containment Area RDA -SW <br />Inspection Period: Second Quarter 2016 <br />Inspection Date: 06/20/16 <br />General Description or Reference to Site Plan: <br />This containment area lies west of the RDA refuse conveyor and south of Hwy. 12. It is designed <br />to contain run-off from this area of the RDA belt conveyor. Specifications are detailed on the <br />Containment Area RDA -SE As built drawing dated 4/24/93. The stage storage curve shows <br />top of embankment at 7415' with sediment accumulation to 7413.5'. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: <br />2). Erosion forming Gullies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />Excellent Moderate Few <br />Extensive Some Few <br />4). Erosion of the downstream toe of the embankment' <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />Yes <br />Yes <br />Poor <br />None <br />No r✓` <br />No Ll_� <br />Yes No <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? No <br />L, Yes <br />Elevation @ top of:�, %r, H T� �n �► ' /S - <br />Elevation of Water Surface: <br />Elevation to top of Sediment:F/ <br />OTHER OBSERVATIONS, <br />MSHA Qualified Impound ent Inspector <br />Professional Engineer Directing Inspe �, _ -_- <br />Date <br />Page 1 <br />