2010-12-08_PERMIT FILE - C1981008 ‎(10)‎

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• Doc Name: Pond 013 Engineering and Hydrologic Design
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-6
• Media Type: D
• Archive: No

'The pond design does not meet MSHA Impoundment criteria, as shown below, since it does not
have a storage volume of 20 acre -ft and does not have an elevation of 20 feet.
30CFR77.216 Water, sediment, or slurry impoundment and impounding structures; general.
(a) Plans for the design, construction, and maintenance of structures which impound water,
sediment, or slurry shall be required if such an existing or proposed impounding structure can:
1. Impound water, sediment, or slurry to an elevation of five feet or more above the
upstream toe of the structure and can have a storage volume of 20 acre -feet or more; or
2. Impound water, sediment, or slurry to an elevation of 20 feet or more above the
upstream too of the structure; or
3. As determined by the District Manager, present a hazard to coal miners.
• Revised May 2010 PR06 Attachment 2.05.3(3)-6-9
Pond 013 Report
•
From Pond 013 topography in SurvCAD
Water Elev
Storage(AcreFt)
(C.Y.)
(C.F.)
Area(Acre)
5552.00
0.00000
0.0
0.0
1.150
5552.50
0.57715
931.1
25140.8
1.194
5553.00
1.17669
1898.4
51256.7
1.234
5553.50
1.79594
2897.5
78231.2
1.273
5554.00
2.43472
3928.0
106056.6
1.312
5554.50
3.09322
4990.4
134740.6
1.352
5555.00
3.77'176
6085.1
164298.0
1.392 Primary Spillway
5555.50
4.47034
7212.2
194728.2
1.432
5556.00
5.18900
8371.6
226032.9
1.473
5556.50
5.92824
9564.2
258234.1
1.515
5557.00
6.68848
10790.7
291350.2
1.557 Emergency Spillway
5557.50
7.46991
12051.5
325389.3
1.601
5558.00
8.27280
13346.8
360363.2
1.644
•
5558.50
9.09708
14676.6
396269.0
1.686
5559.00
9.94302
16041.4
433118.1
1.731
5559.50
10.81123
17442.1
470937.2
1.778
5560.00
11.70305
18880.9
509784.8
1.805
'The pond design does not meet MSHA Impoundment criteria, as shown below, since it does not
have a storage volume of 20 acre -ft and does not have an elevation of 20 feet.
30CFR77.216 Water, sediment, or slurry impoundment and impounding structures; general.
(a) Plans for the design, construction, and maintenance of structures which impound water,
sediment, or slurry shall be required if such an existing or proposed impounding structure can:
1. Impound water, sediment, or slurry to an elevation of five feet or more above the
upstream toe of the structure and can have a storage volume of 20 acre -feet or more; or
2. Impound water, sediment, or slurry to an elevation of 20 feet or more above the
upstream too of the structure; or
3. As determined by the District Manager, present a hazard to coal miners.
• Revised May 2010 PR06 Attachment 2.05.3(3)-6-9