2020-03-24_PERMIT FILE - C1981019A ‎(42)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/24/2020
• Doc Name: Side Channel Designs ‎(Temporary)‎
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14B
• Media Type: D
• Archive: Yes

FREEBOARD
1 -•,:
2'
Typical Temporary Side Channell
Depth of
Slope Flow Flow(D) Freeboard Total Velocity
Channel Channel Section (%) (cfs) (ft) (ft) Depth(ft) (fps)
From To
100+00 90+00 3.0% 0.0 0.2 0.3 0.5 3.0
South Collection 90+00 50+00 3.0% 0.0 0.2 0.3 0.5 3.0
Ditch 50+00 30+00 5.0% 0.0 0.2 0.3 0.5 3.0
30+00 0+00 5.0% 46.4 0.9 0.3 1.2 8.9
Prospect East
Collection Ditch 16+50 0+00 3.0% 0.0 2 0.2 0.3 0.5 3.0
New East Taylor
3.0% 0.02 0.2 0.3 0.5 3.0
Ditch
Stoker Ditch 3.0% 0.02 0.2 0.3 0.5 3.0
Streeter Side Ditch 33+00 0+00 3.0% 0.0 2 0.2 0.3 0.5 3.0
1 This table presents historical information only. Ditches previously listed on this table,but never constructed have been
removed to match as-built conditions at the Colowyo mine site.
2 Minimum Flow of 1 cfs used to size temporary side channels where no flow is predicted for the post-mine drainage
conditions.
Revision Date: 12/20/19
Exh. 7-14B-2 Revision No.:TR-135