2018-01-04_HYDROLOGY - C1983059

• Permit No: C1983059
• IBM Index Class Name: Hydrology
• Doc Date: 1/4/2018
• Doc Name: Quarterly Sediment Pond/Impoundment Report
• From: Oxbow Mining, LLC
• To: DRMS
• Annual Report Year: 2017
• Report Quarter_Month: 4
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: CCW
• Media Type: D
• Archive: No

141;' IMP
IXBOW MINING.LLC
FOURTH QUARTER 2017 POND INSPECTION REPORT
Pond Inspection Date: December 6, 2017
OPERATOR: OXBOW MINING, LLC, (Formerly TCLLC.)
MINE: TERROR CREEK LOADOUT
POND IDENTIFICATION P-1 (001) Dugout (002)
TYPE OF POND Sediment Sediment
APPROXIMATE WATER LEVEL 0.0' dry 0.0' dry
SEDIMENT (% total storage) <5 % <5%
OUTFLOW (cfs) 0 0
FEATURES
EROSIONAL
Rills & Gullies
No
No
Inadequate Vegetation
No
No
Outlet Channel Erosion
No
No
Burrows
No
No
Other
No
No
STRUCTURAL
Differential Settling
No
No
Cracks or Slides
No
No
Seepage
No
No
Other
No
No
APPURTENANT STRUCTURES
Defective Spillways
No
No
Dewatering Devices Clogged
No
No
Faulty Gates, Etc.
No
No
Other
No
No
MAINTENANCE REQUIRED
No
No
ADDITIONAL COMMENTS: The design sediment level is 18" below the invert of the primary spillway
on P-1. No erosion and adequate vegetative growth remains. Ponds are maintained as designed and in
accordance with the approved plan.
REFERENCE DRAWINGS:
Map 7
Exh. 9, p. 11
SWMP Controls: The SWMP control devices were inspected and all SWMP control devices were found to
be in adequate condition. See Map 14 for details.
Inspected By:
Under Direction of.
3737 Hwy 133 • P.O, Box 535 • Somerset, Colorado 81434 USA
TEL [phone] FAX [phone]