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2017-07-18_PERMIT FILE - C1981019A (2)
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2017-07-18_PERMIT FILE - C1981019A (2)
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Last modified
5/9/2023 2:48:19 PM
Creation date
8/28/2017 8:53:29 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981019A
IBM Index Class Name
Permit File
Doc Date
7/18/2017
Doc Name
Sediment Control for Initial Disturbance Coal Stockpile Pond Using Total Containment
Section_Exhibit Name
Volume 18 Exhibit 7, Item 23 Part M
Media Type
D
Archive
Yes
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SEDCAD 4 for Windows <br />Structure Detail: <br />Structure #1 (Erodible Channel) <br />Triangular Erodible Channel Inputs: <br />Material: Shales and hardpans <br />Left Right <br />Freeboard Freeboard Freeboard <br />Limiting <br />Sideslope Sideslope Slope (%) Manning's n <br />Mult. x <br />Velocity <br />Ratio Ratio <br />Depth (ft) % of Depth (VxD) <br />(fps) <br />1.5:1 1.5:1 2.0 0.0250 <br />X -Section Area: <br />6.0 <br />Erodible Channel Results: <br />Structure #2 (Pond) <br />Pond Inputs: <br />Pond Results: <br />Initial Pool Elev: 7,183.50 ft <br />Initial Pool: 0.61 ac -ft <br />Emergency Spillwa <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />7,185.00 20.00 2.00:1 2.00:1 20.00 <br />Peak Elevation: 7,184.74 ft <br />Dewater Time: 0.00 days <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation -Capacity -Discharge Table <br />5 <br />Filename: TemporarySump sc4 Printed 05-16-2017 <br />Exh. 7-23M-13 Revision Date: 5/18/2017 <br />Q --;i ;— AIn • TR -I I I <br />w/o Freeboard w/ Freeboard <br />Design Discharge: <br />1.10 cfs <br />Depth: <br />0.50 ft <br />Top Width: <br />1.49 ft <br />Velocity: <br />2.95 fps <br />X -Section Area: <br />0.37 sq ft <br />Hydraulic Radius: <br />0.207 ft <br />Froude Number: <br />1.04 <br />Initial Pool Elev: 7,183.50 ft <br />Initial Pool: 0.61 ac -ft <br />Emergency Spillwa <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />7,185.00 20.00 2.00:1 2.00:1 20.00 <br />Peak Elevation: 7,184.74 ft <br />Dewater Time: 0.00 days <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation -Capacity -Discharge Table <br />5 <br />Filename: TemporarySump sc4 Printed 05-16-2017 <br />Exh. 7-23M-13 Revision Date: 5/18/2017 <br />Q --;i ;— AIn • TR -I I I <br />
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