2018-08-08_PERMIT FILE - C1982056 ‎(17)‎

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2018
• Section_Exhibit Name: EXHIBIT 08 TAB 1 SEDIMENT CONTROL PLAN
• Media Type: D
• Archive: No

REVISED
8/8/85
Table 1
SEDIMENTATION POND E DESIGN SPECIFICATIONS
- Sedimentation pond design to contain 10 -year, 24-hour event.
- Emergency spillway designed for 25 -year, 24-hour event.
- Antecedent moisture condition II.
- Weighted curve number is 82.
- Drainage area is 35 ac.
- Disturbed area is 24 ac.
- Runoff volume is 1.52 ac -ft.
- Sediment volume is 0.64 ac -ft.
- Total volume is 2.16 ac -ft.
- Emergency spillway height above botton- of natural channel is less than
10 ft.
- Relative elevation top of dam is 57.0 ft.
- Relative elevation crest of emergency spillway is 55.5 ft.
- Depth of flow and velocity of flow in emergency spillway for design
event is 0.5 ft. and 5.2 fps respectively.
- Relative elevation top of decant is 55.0 ft.
- Relative elevation dewatering hole is 51.8 ft.
- Diameter of dewatering hole is 2.0 in.
- Total detention time is 34 hrs.
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