2025-07-10_PERMIT FILE - C1996083

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 7/10/2025
• Doc Name: Appendix A through Appendix C
• Section_Exhibit Name: Volume IX Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: No

Appendix B
Summary Coal Mine Waste Disposal Area Ditches and Culverts
Ditch Grade Minimum Grade Maximum Grade RipRap Peak
Min Max Depth Velocity Depth Velocity
D50 Inch*Flow
Feet Ft/Sec Feet Ft/Sec cfs
F1 4.2% 4.2% 0.40 4.2 0.40 4.2 6.18
F2 1.3% 1.3% 0.47 2.6 0.47 2.6 5.17
F3 4.4% 4.4% 0.45 4.6 0.45 4.6 8.62
F4 30.0% 30.0% 1.60 11.5 1.60 11.5 24 44.01
F5 2.0% 2.0% 0.38 2.8 0.38 2.8 3.50
F6 1.1% 1.1% 0.40 2.1 0.40 2.1 3.93
F7 1.4% 1.4% Trapezoidal Channel 18.38
F7a 33.0% 33.0% 0.50 11.7 0.50 11.7 24 18.38
F8 4.6% 4.6% 0.50 4.9 0.50 4.9 10.01
F9 30.0% 30.0% 0.10 6.2 0.10 6.2 12 1.40
F10 2.2% 2.2% 0.54 3.7 0.54 3.7 9.63
F11 3.4% 3.4% 0.33 3.3 0.33 3.3 3.19
F12 3.6% 3.6% 0.39 3.8 0.39 3.8 5.03
F13 2.0% 2.0% 0.80 4.1 0.80 4.1 3.93
F14 (2%) 2.0% 2.0% Trapezoidal Channel 11.22
F14 (30%) 26.0% 26.0% Trapezoidal Channel 18 11.22
F15 1.8% 1.8% 0.48 2.7 0.48 2.74 0.96
F16 10.0% 10.0% 1.30 8.0 1.30 7.98 18 3.05
F17 1.0% 1.0% 0.68 2.6 0.68 2.6 2.14
F18 3.4% 3.4% 0.56 2.3 0.56 2.3 1.08
F19 2.9% 2.9% 0.39 2.6 0.39 2.6 0.60
F20 7.0% 7.0% 0.28 4.2 0.28 4.2 3.48
East Div. 5.0% 30.0% Trapezoidal Channel 0-24" 26.00
W. Div #2 4.0% 4.0% 0.40 2.6 0.40 2.6 3.52
W. Div #1 3.5% 3.5% 0.81 4.3 0.81 4.3 10.64
Permanent Culvert:
F2 30" 15.14
F4 Deleted From Design with TR-87, will remain in place until Pond D expansion is complete.
Temporary Culvert:
T-F1 30" Half Culvert 21.75
T-F2 12"0.47
T-F3 24"21.41
T-F4 30" Half Culvert 4.74
T-F5 30" Half Culvert 5.82
* Minimum D50
Flow depth in feet does not include freeboard.
MR-211 App. B-2 06/2025