2015-09-09_PERMIT FILE - C1981019A

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/9/2015
• 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
r — ,,inhf 1008 _9M11 P -1. I Gh,erah
Structure Detail;
Structure #25 (Null)
Collection pt at hdwtr W Tay East Trib
Structure #24 6! jI rap Channel)
Chnl hdwtr to Sta 76
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Width
Bottom
w/o Freeboard w/ Freeboard
(ft) Sideslope Sideslope Slope ( %)
Depth (ft) % of Depth Mult. x
Ratio Ratio
(VxD)
12.00 3.0:1 3.0:1 15.0
12.83 ft
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #23 (Null)
Collection point Sta 76
Structure #22 (Riprap Channel)
Chn/ Sta 76 down to Sta 62
Trapezoidal Riprap Channel Inputs:
13
Filename: W Tayl Sed Pond Post Mining 1024.sc4 Printed 12 -11 -2010
Exh. 7 -20C -127 Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
17.59 cfs
Depth:
0.14 ft
Top Width:
12.83 ft
Velocity*:
X- Section Area:
1.71 sq ft
Hydraulic Radius:
0.133 ft
Froude Number *:
Manning's n *:
Dmin:
2.00 in
D50:
6.00 in
Dmax:
7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #23 (Null)
Collection point Sta 76
Structure #22 (Riprap Channel)
Chn/ Sta 76 down to Sta 62
Trapezoidal Riprap Channel Inputs:
13
Filename: W Tayl Sed Pond Post Mining 1024.sc4 Printed 12 -11 -2010
Exh. 7 -20C -127 Revision Date: 12/31/10
Revision No.: TR -81