2012-06-08_PERMIT FILE - C2009087A ‎(12)‎

• Permit No: C2009087A
• IBM Index Class Name: Permit File
• Doc Date: 6/8/2012
• Doc Name: DRAINAGE AND SEDIMENT CONTROL PLAN
• Section_Exhibit Name: Exhibit 2.05.3-E2 Drainage and Sediment Control Plan
• Media Type: D
• Archive: Yes

Peabody Sage Creek Mine - Drainage and Sediment Control Plan
TABLE 2.05.3 -E2 -6
North Facilities Area (Shop/Warehouse Area) Diversion Ditch Design Schedule
These designs are both Operational and Postmine Designs)
Design
Ditch
Design Flow
Slope
Bottom Width
Side Slope
Velocity
Flow Depth
Freeboard
Design Depth
Lining Type 4)
cfs )
(ft)
H:IV)
(f s Z)
ft s)
ft
ft
Northwest
40.4
0.05 ft/ft
15
2
5.1
0.5
0.5
1.0
Riprap as
Diversion Ditch
required
Shop Diversion
22.1
1.0%
V -ditch
2
4.9
1.5
0.5
2.0
Vegetated
Ditch
PreLaw Diversion
1.25
4.0%
5
3
0.5
0.4
0.3
0.7
Vegetated
Ditch
Old Boneyard
23
4.0
3
2
1.1
0.8
0.3
1.1
Vegetated
Diversion Ditch
Office Diversion
1.5
33
V -ditch
3
0.7
1.0
0.3
13
Vegetated
Ditch
10
10
2.3
0.1
0.4
D50= 3"
Ditch RA -D1
1.00
0.4-7
V -ditch
3
1.7
1.5
0.3
1.8
Vegetated
Notes: 1) Channel designed to safely convey runoff from the 10 -year, 24 -hour storm event
2) Design velocity for vegetated channels based on Stability Class C; except where noted
3) Flow Depth for vegetated channels based on Capacity Class B; except where noted
4) Rock riprap sized using Simons /OSM Method
5) Ditch RA -D1 design velocity based on Ca acit Class D
TR -03 2.05.3 -G2.14 Revised 04/12