_INSPECTION - C1982057 (73) - Laserfiche WebLink

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s C-1982-057/Seneca II-W Mine DTM July 28,2010 ridentified he ground along drainage segments not walked on this or previous 2010 DRMS inspections. The operator will d to conduct a thorough ground check to ensure that all erosional features that require repair in 2010 are and properly repaired. FISH and WILDLIFE—Rule 4.18: As is usually the case, evidence of deer and elk use of the reclaimed areas was widespread. Elk tracks and fresh droppings were particularly abundant in the upper PM-3 drainage, and elk could be heard mewing and chirping in the undisturbed aspen stand along the edge of the reclamation. A mature buck antelope was also observed along PM-3. A sharptail grouse was flushed from an area of sagebrush/grass/alfalfa cover in the upper 006-NE3 watershed,and other sharptails were heard clucking in the vicinity. HYDROLOGIC BALANCE -Rule 4.05 ❑Drainage Control 4.05.1,4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6, Discharge Structures 4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage—Acid and Toxic Materials 4.05.8; Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18: Drainage and sediment control structures were in general well maintained and functional,with minor maintenance warranted in a couple locations. Most stock ponds contained water and embankments were stable. Spillway maintenance was noted to be necessary in one location. Sediment Ponds • Pond 005 was observed on the morning of 7/30. Water level was 18"below top of primary riser; no discharge. • Pond 006 was observed on the morning of 7/29; discharging clear flow over the top of the riser. • Pond 017 was observed on the afternoon of 7/29; discharging clear flow over the top of the riser. • Pond 016A was observed on the afternoon of 7/29; discharging clear flow over the top of the riser.The Pond in-slope slump noted in previous inspections is being addressed within the context of the slide remediation plan for the entire slide complex in the vicinity of Pond 016/016A and the nearby shrub plot. The slide remediation plan technical revision application(TR-73)was submitted to the Division on 8/5/2010, and is currently under review. The Pond 016A embankment appeared to be stable, and flow out of the French drain below the 016A embankment was flowing at normal rate. • Pond 016 was observed on the afternoon of 7/29; discharging clear flow over the top of the riser. • Pond 009 was observed on the afternoon of 7/30. Water level was approximately 1 foot below top of riser; no discharge. • Pond 015 was observed on the afternoon of 7/30; discharging clear flow over the top of the riser. Most reclaimed area stock ponds contained pools of water. The spillway outlet channel on Stock pond T-25 in the lower Pond 17 watershed had undercut the TRM channel liner. Riprap installation is warranted at this location. Number of Partial Inspection this Fiscal Year: 0 Number of Complete Inspections this Fiscal Year: 1 Page 6 of 19