PERMFILE72442

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 1/3/2006
• Doc Name: SEDCAD Runs
• Section_Exhibit Name: Exhibit 80 Drilling Activities - TR103
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
r,...,.;,,~...ooa oe..,de i c,.m..on
Structure Detai/;
Structure #I~Silt Fence)
pad runoff
Silt Fence Inputs:
Ferxe Flow Width along land Slope Tie-back
Rate contour (R) Height (R) (%) distance (ft)
(gpm/sq ft)
0.3 300.0 3.0 3.00 100,0
*Sediment Storage: 0.00 ac-ft
*No sediment capacity defined
Silt Fence Results:
PeaK Fence Stage: 0.55 R
Peak Water Stage: 0.55 R
Dewater Tme: 0.50 days
Trap Efficiency: 77.29
Dewatering time is calculated from peak stage to lowest spillway
Stake-Capacity-Discharge Table
Fence Sage

(ft) Water Stage

(R) Area

(ac) iapadty

(ac-R) Discharge

(~) Dewater
Time
(hrs)
0.00 0.00 0.000 0.000 0.000 Top of Sediment
0.10 0.10 0.023 0.001 0.020 1.60
0.20 0.20 0.046 0.004 0.041 2.80
0.30 0.30 0.069 0.010 0.062 2.05
0,40 0.40 0.092 0.018 0.084 2.00
0.50 0.50 0.115 0.028 0.106 2.05
0.55 0.55 0.126 0.034 0.716 0.62 Peak Stage
0.60 0.60 0.138 0.041 0.126
0.70 0.70 0.161 0.056 0.151
0.80 0.60 0.184 0.073 0.175
0.90 0.90 0.207 0.092 0.199
1.00 1.00 0.230 0.114 0.223
1.10 1.10 0.253 0.138 0.248
1.20 1.20 0.275 0.165 D.273
1.30 1.30 0.298 0.193 0.298
7.40 1.40 0.321 0.224 0.324
1.50 1.50 0.344 0.258 0.351
1.60 1.60 0.367 0.293 0.378
Filename: Mtncoal Pad - 0.6-acre.sc4 Printed 07-22-2005