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2022-07-12_PERMIT FILE - C1981019A (12)
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2022-07-12_PERMIT FILE - C1981019A (12)
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Last modified
11/12/2024 8:55:50 AM
Creation date
5/10/2023 8:55:28 AM
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Template:
DRMS Permit Index
Permit No
C1981019A
IBM Index Class Name
Permit File
Doc Date
7/12/2022
Doc Name
Section 25 Pond Sediment Control During Mining
Section_Exhibit Name
Volume 18 Exhibit 7 Item 23 Part B
Media Type
D
Archive
Yes
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Structure Detail: <br />Structure #14 (Culvert) <br /> Culvert 62 <br /> Culvert Inputs: <br />Length (ft) Slope (%) Manning's n <br />Max. <br />Headwater <br />(ft) <br />Tailwater <br />(ft) <br />Entrance <br />Loss Coef. <br />(Ke) <br />220.00 1.50 0.0150 5.00 0.00 0.90 <br /> Culvert Results: <br />Design Discharge = 1.39 cfs <br />Minimum pipe diameter: 1 - 8 inch pipe(s) required <br />Structure #15 (Erodible Channel) <br /> Natural Channel within Disturbed Area to Culvert 44A <br /> Parabolic Erodible Channel Inputs: <br />Material: Shales and hardpans <br />Slope (%) Manning's n <br />Freeboard <br />Depth (ft) <br />Freeboard <br />% of Depth <br />Freeboard <br />Mult. x <br />(VxD) <br />Limiting <br />Velocity <br />(fps) <br />8.0 0.0250 6.0 <br /> Erodible Channel Results: <br />w/o Freeboard w/ Freeboard <br />Design Discharge: 35.99 cfs <br />Depth: 1.06 ft <br />Top Width: 4.23 ft <br />Velocity: 12.05 fps <br />X-Section Area: 2.99 sq ft <br />Hydraulic Radius: 0.605 ft <br />Froude Number: 2.53 <br />Structure #25 (Erodible Channel) <br /> Road Ditch to Culvert 67 <br /> Triangular Erodible Channel Inputs: <br />Material: Shales and hardpans <br />Filename: Exhibit 7 Item 23 Part B 10-Yr 24-Hr Section 25 During Mining.sc4 Printed 03-17-2022 <br />SEDCAD 4 for Windows <br />Copyright 1998 -2010 Pamela J. Schwab <br />Civil Software Design, LLC 14
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