2018-01-31_PERMIT FILE - C1981019A ‎(8)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 1/31/2018
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
(`—,rinht 1QQR -9nin P—j. i Crhwah
PADER Method - Steep Slope Design
Structure #3 (Nu/
Confluence of West Tay/or Ditches
Structure #2 (Pond
West Taylor Pond
Pond Inputs:
Initial Pool Elev: 7,471.00 ft
Initial Pool: 2.90 ac -ft
Perforated Riser
Riser
w/o Freeboard w/ Freeboard
Design Discharge:
8.95 cfs
Depth:
0.16 ft
Top Width:
12.95 ft
Velocity:
4.52 fps
X -Section Area:
1.98 sq ft
Hydraulic Radius:
0.152 ft
Froude Number:
2.03
Manning's n:
0.0480
Dmin:
2.00 in
D50:
3.00 in
Dmax:
4.50 in
Structure #3 (Nu/
Confluence of West Tay/or Ditches
Structure #2 (Pond
West Taylor Pond
Pond Inputs:
Initial Pool Elev: 7,471.00 ft
Initial Pool: 2.90 ac -ft
Perforated Riser
Riser
Riser Height
Barrel
Number of
Barrel Barrel Slope Spillway Elev
Diameter
(ft)
Diameter
Mannin
Length (ft) (%) gs n (ft) Holes per
(in)
(in)
Elev
18.00
10.50
18.00
150.00 2.00 0.0150 7,471.00 2
Emeraencv Sl,illwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
7,475.80 30.00 2.00:1 2.00:1 30.00
Pond Results:
N.
Peak Elevation: 7,471.41 ft
Dewater Time: 0.61 days
Dewatering time is calculated from peak stage to lowest spillway
Filename: TR -117 Active Mining 25 YR 24 HR.sc4 Printed 11-10-2017