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Minimum pipe diameter: 1 - 30 inch pipe(s) required <br />Structure #13 (Null) <br /> Null at Confluence of Culverts 62 and 63 <br />Structure #12 (Culvert) <br /> Culvert 44A <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 />300.00 1.50 0.0150 5.00 0.00 0.90 <br /> Culvert Results: <br />Design Discharge = 85.94 cfs <br />Minimum pipe diameter: 1 - 48 inch pipe(s) required <br />Structure #11 (Vegetated Channel) <br /> Natural Channel Section 36 Pond to Culvert 44A <br /> Parabolic Vegetated Channel Inputs: <br />Material: Tall fescue <br />Slope (%)Retardance <br />Classes <br />Freeboard <br />Depth (ft) <br />Freeboard <br />% of Depth <br />Freeboard <br />Mult. x <br />(VxD) <br />Limiting <br />Velocity <br />(fps) <br />12.9 D, B 5.0 <br /> Vegetated Channel Results: <br />Stability <br />Class D w/o <br />Freeboard <br />Stability <br />Class D w/ <br />Freeboard <br />Capacity <br />Class B w/o <br />Freeboard <br />Capacity <br />Class B w/ <br />Freeboard <br />Design Discharge: 90.66 cfs 90.66 cfs <br />Depth: 1.39 ft 1.65 ft <br />Top Width: 5.56 ft 6.61 ft <br />Velocity: 17.60 fps 12.46 fps <br />X-Section Area: 5.15 sq ft 7.28 sq ft <br />Hydraulic Radius: 0.794 ft 0.944 ft <br />Froude Number: 3.22 2.09 <br />Roughness Coefficient: 0.0261 0.0413 <br />Structure #10 (Pond) <br /> Section 36 Pond <br />Filename: Exhibit 7 Item 23 Part B 25-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 11