2019-03-04_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 3/4/2019
• Doc Name: Pond 013 Postmining SEDCAD Modeling
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-32
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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7
Combined
Elevation User- Total
(ft) input discharge Discharge
(cfs)
(cfs)
102.50 2.228 2.228
103.00 2.228 2.228
Structure #3 (Vegetated Channel)
Ditch G9
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right
Bottom Retardance
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio Classes
Depth (ft) % of Depth Mult. x
Velocity
(fps)
6.43 cfs
(VXD)
6.43 cfs
3.00 2.0:1 2.0:1 3.2 D, B
0.30
7.0
Vegetated Channel Results:
Structure #2 (Pond)
Pond 013
Pond Inputs:
Initial Pool Elev: 5,555.23 ft
Initial Pool: 6.53 ac -ft
Perforated Riser
Riser
Riser Height
Stability
Class D w/o
Freeboard
Stability
Class D w/
Freeboard
Capacity
Class B w/o
Freeboard
Capacity
Class B w/
Freeboard
Design Discharge:
6.43 cfs
(in)
6.43 cfs
24.00 5.50
Depth:
0.57 ft
0.87 ft
1.02 ft
1.32 ft
Top Width:
5.29 ft
6.49 ft
7.08 ft
8.28 ft
Velocity:
2.70 fps
1.25 fps
X -Section Area:
2.38 sq ft
5.14 sq ft
Hydraulic Radius:
0.427 ft
0.680 ft
Froude Number:
0.71
0.26
Roughness Coefficient:
0.0558
0.1647
Structure #2 (Pond)
Pond 013
Pond Inputs:
Initial Pool Elev: 5,555.23 ft
Initial Pool: 6.53 ac -ft
Perforated Riser
Riser
Riser Height
Barrel
Barrel Barrel Slope
Number of
Spillway Elev
Diameter
(ft)
Diameter
Length (ft) ( /o)
Manning's n Holes per
(ft)
(in)
(in)
Elev
24.00 5.50
24.00 100.00 3.40
0.0240 5,555.00 2
Filename: NH2 Pond 013 Postmine 25 24 w 1000 gpm higher.sc4 Printed 02-23-2016
Attachment 2.05.3(3)-32 Revision Date: 03/09/2016
Page 27 Revision No.: TR -70