PERMFILE57171

• Permit No: C1981014
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: pages 93R to 155L
• Section_Exhibit Name: EXHIBIT 19 MINE AREA DIVERSIONS AND DITCHES
• Media Type: D
• Archive: No

Peak Discharge:
• 10-year, 24-hour event = 8.74 cfs
Ditch Design
Section B of the Access Road Collection Ditch was designed using
Manning's Equation for Open Channel Flow. The results are
summarized in Figure 2, Sediment Collection Ditches - Design
Detail.
Access Road Collection Ditch - Section C
Hvdroloav Inputs
Section C receives runoff from Section B and subwatersheds JBS
121/SWS 1, JBS 121/SWS 2 and JBS 211/SWS 1. All hydrology inputs
for these subwatersheds are shown on Table 11, SEDCAD+ Version 3.0,
Pond 5 and Associated Structures.
•
Hvdroloav Results
Peak Discharge
10-year, 24-hour event = 27.3 cfs
Ditch Design
Section C of the Access Road Collection Ditch was designed using
Manning's Equation for Open Channel Flow. The results are
summarized in Figure 2, Sediment Collection Ditches - Design
Detail.
-~
101 R Revised - December, 1991