PERMFILE70892

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Figure Crooked
• Section_Exhibit Name: EXHIBIT 15 FILL 3 SEDIMENT CONTROL POND 003
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Co0Yh9h1159B Pamela J. Schwab
Civil Software Design
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Structure Detai/;
Structure #1 ~Nul1
Structure #1 (Null1
Structure #3 (Pond)
Pond Inputs:
Initial Pool Elev: 6,841.00
Initial Pool: 0.33 ac-ft
*Sediment Storage: 3.93 ac-f[
Dead Space: 20.00
'Sediment capacity based on Average Annual R of70.0 for 1 year(s)
Perforated Riser
Riser Riser Height Barrel Barrel Barrel Slope Number of
'
Diameter (k) Diameter Length (ft) (%) Manning
s n Spillway Elev Holes per
(in) (in) Elev
12.00 9.00 8.00 70.00 3.00 0.0240 6,849.00 4
Emergency~pillway
Pond Results:
Spillway Elev Crest Length Lek Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,850.00 18.00 2.50:1 2.50:1 70.00
Peak Elevation: 6,849.60
H'graph Detention Time: 14.91 hrs
Pond Model: CSTRS
Dewater Tme: 5.94 days
Trap Efficiency: 81.25
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
•
Area Capacity Discharge Dewater
Elevation Tme
(ac) (acft) (ds) (hrs)
6,840.56 0.755 0.000 0.000 Top of Sed. Storage
6,841.00 0.762 0.332 0.000 Law hole SPW #1
6,841.50 0.771 0.716 0.167 27.76•
6,842.00 0.780 1.109 0.236 19.86•
Filename: pond3.sc4 Printed 04-23-2001