2014-04-02_HYDROLOGY - C1982057

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 4/2/2014
• Doc Name: 1st Quarter 2014 Stockpond Inspection Report
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: JHB
• Email Name: DIH
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponds or Sumps
DAM REMOVED FALL 2011
INSPECTOR'S NAME: Katryna Snowden DATE:
FACILITY CONFIGURATION: Stockpond DATE LAST INSPECTION:_
SITE NAME: T -25 LOCATION: SW�/•NE` / <, Sec 34, TSN, R88W
MINE NAME: Seneca II -W LOCATION: 8 mi S of Hayden, CO
MINE I.D. NO.: C -82 -057 OWNER'S REP.: Dennis Jones, Manager
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Circle or write in appropriate response
Angle of slope: 4.3:1 upstream,
*Seepage (specify location, color,
At isolated points on embankment
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
*Major erosion problems:
Surface movements in valley bottom
*Erosion of toe:
*Water impounded against downstream
Existing embankment freeboard:
Increase Decrease in water level:
Cracks, bulging, or erosion on upstream face:
Spillway erosion:
*Clogging
Spillway channels:
Diversion ditches:
2.9:1 downstream
and approximate volume)
slopes:
water:
or on hillside:
toe:
Total = 7.2:1 N/A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
feet
feet
No
No
No
No
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
*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 (extent, location, volume,
etc.) in the space on the back of this sheet.
Comments:
DAM REMOVED FALL 2011, REBUILT IN 2012 AS A RUNOFF CONTROL STURCURE (PM1 -A3)