PERMFILE109758

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: SEDIMENT PONDS SEDCAD4 RESULTS
• Section_Exhibit Name: TAB 13 Attachment 13-12 APPENDIX 13-12.1
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Copyrigh11999 Pamela J. Schwah
Civil Software Design
•
Structure #i (Pond)
Pond IZ
Pond Inputs:
Structure Detai/:
Initial Pool Elev: 7,252.00
Indial Pool: 0.79 ac-ft
*Sediment Storage: 13.31 ac-R
Dead Space: 20.00
*Sediment capacity based on Average Annual R of 30. o for 1 year(s)
Perforated Riser
Riser Barrel Number of
Riser Height
Dlameter Barrel Barrel Slope
Diameter Manning's n Spillway Elev Holes per
(in) (ft) °
(in) Length (ft) (/°) Elev
30.00 5.00 24.00 102.00 5.00 0.0240 7,254.50 3
Emergency Spillway
• Spillway Elev Crest Length LeR Right Bottom
(R) Sideslope Sideslope Width (R)
7,257.00 50.00 3.00:1 3.00:1 15.00
Pond Results:
Peak Elevation: 7,256.38
H'graph DetenOon Time: 4.82 hrs
Pond Model: CSTRS
Dewater Time: 2.59 days
Trap Efficiency: 62.96
!)ewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table

Area Capacity Discharge Dewater
Elevation Time
(ac) (aaft) (~s) (hrs)
7,251.32 1.133 0.000 0.000 Top of Sed. Storage
7,251.50 1.144 0.206 0.000
7,252.00 1.174 0.785 0.000 Low hole SPW #1
7,252.50 1.207 1.380 0.501 14.37"
7,253.00 1.241 1.992 0.709 10.44'
Filename: pond t 2ABt Orev2.sc4 Printed OS-04-2000