2008-01-28_PERMIT FILE - C1992080A

• Permit No: C1992080A
• IBM Index Class Name: Permit File
• Doc Date: 1/28/2008
• Section_Exhibit Name: APPENDIX 5-2 SEDIMENT POND CONTROL DESIGN
• Media Type: D
• Archive: Yes

•
NAME OF BTRUCTURE:
TYPE OF BTRUCTURE:
LOCATION: North of
STORM TYPE: 10 yr.
HABIC DATA
SEDIMENT CONTROL DESIGN
CARBON JUNCTION MINE
OARRIDGE ENERGY, INC.
Haul road culverts
Culverts
Sediment Pond No. 1 under haul road.
24 hr. event.
1. PRECIPITATION EVENT:
2. WEIGHTED SOILS COMPLEX N0:
3. LENGTH:
4. AREA:
5. SLOPE:
6. HYDRAULIC LENGTH:
7. RUNOFF:
8. TIME CONCENTRATION, HOUR
9. PEAK DISCHARGE PER UNIT:
10. TOTAL PEAK DISCHARGE:
STRUCTURE DESIGN
1. LENGTH:
2. WIDTH:
3. HEIGHT:
4. FLOW DEPTH AT
5. SAFETY FACTOR,
6. SAFETY FACTOR,
7. WALL SLOPE:
8. VELOCITY:
PEAK DISCHARGE:
BOTTOM:
SIDES:
2.25 in.
90
4o ft.
0.037 sgmi.
1.0~
40 ft.
1.31
.18
820 cfs/in/sgmi.
39.75 cfs.
40 ft.
2-24" dia.
n/a
n/a
n/a
n/a
n/a
6.33 fps.
DESIGN: Two 24" culverts have been installed.