2018-07-11_HYDROLOGY - C2009087

• Permit No: C2009087
• IBM Index Class Name: Hydrology
• Doc Date: 7/11/2018
• Doc Name: Quarterly Sediment Pond/Impoundment Report
• From: Peabody Sage Creek Mining, LLC
• To: DRMS
• Annual Report Year: 2018
• Report Quarter_Month: 2
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: TNL
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM: Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Jason Herden DATE: 05/21/18
NPDES I.D. NO.: N/A
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTION: 03/01/18
SITE NAME: Upper Sump LOCATION: NW%, Sec. 3, TSN, R87W7W
MINE NAME: Peabody Sage Creek Mine LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-2009-087 OWNER'S REP.: Miranda Kawcak
CIRCLE OR WRITE IN APPROPRIATE RESPONSE: YES NO N/A
1
Foundation preparation (removal of vegetation, stumps, topsoil: x
2
Lift thickness =
3
Compaction according to approved plan: x
4
Burning (specify extent and location): X
5 jAngle
of slope:_upstream, downstream N/A
6
*Seepage (specify location, color, and approximate volume)
From underdrain pipes X
At isolated points on embanckement slopes x
At natural hillside: X
Over widespread areas: X
From downstream foundation area: x
"Boils" beneath stream or ponded water. x
7
Cracks or scarps on crest: X
8 jcracks
or scarps on slope: X
9
Sloughing or bulging on slope: X
10
*Major erosion problems: X
11
Surface movements in valley bottom or on hillside: x
12
*Erosion of toe: X
13
*Water impounded against toe: x
14
Existing embankment freeboard =
15
Increase Decrease in water level: Same
16
Cracks, bulging, or erosion on upstream face: x
17
Visible sumps or sinkholes in slurry surface: X
18
*Clogging
Spillway channels and pipes: X
Decant system: X
Diversion ditches: X
19
*Cracking or crushing of pipes
Spillway pipes: X
Decant system: X
20
Trash racks clear and in place: X
21
Discharge rate (gpm) = 133
*Major adverse changes in these items could cause instability and should be reported to the Engineering Manager
and Mine Superintendent for further evaluation. Adverse conditions noted in these items should normally be
described (extextent, location, volume, etc.) here: Small seep between CMP and Mine Road