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2023-12-14_PERMIT FILE - C1981019 (18)
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2023-12-14_PERMIT FILE - C1981019 (18)
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Last modified
11/14/2024 8:50:33 AM
Creation date
11/14/2024 8:48:56 AM
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DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Permit File
Doc Date
12/14/2023
Doc Name
Sediment 26 Pond Sediment Control Post Mining
Section_Exhibit Name
Volume 18 Exhibit 7 Item 23 Part J
Media Type
D
Archive
No
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Exh. 7-23J-3 Revision Date: 10/23/23 <br /> Revision No.: TR-161 <br />A SEDCADTM model (25 Year 24 Hour Channel Demonstration model) has been included which <br />evaluates the peak flow for each of the channel. The minimum channel configurations are <br />summarized below <br /> <br />Name <br />Peak <br />Flow <br />(CFS) <br />Average <br />Slope <br />(%) <br />Channel <br />Type Side Slopes <br />Minimum <br />Depth <br />(Feet) <br />Erosion <br />Protection <br />Lower Bear <br />Draw 7.96 9.5 Trapezoidal <br />10’ bottom 3H:1V 4.0 Riprap, <br />D50 = 3” <br />Bear Draw <br />0+00 to 15+00 30.03 10.8 Trapezoidal <br />10’ bottom 3H:1V 4.0 Riprap, <br />D50 = 6” <br />Bear Draw <br />15+00 to 34+00 5.7 2.8 Trapezoidal <br />10’ bottom 3H:1V 4.0 Vegetation <br />Bear Draw <br />34+00 to 81+10 2.1 7.1 Trapezoidal <br />10’ bottom 3H:1V 4.0 Vegetation <br />
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