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
(`nmrinM 100P Dmm~b I CrA..mh
Structure Detai/;
Structure #1 (Silt Fence)
pad runoff
Silt Fence Inputs:
Fence Flow Wtdth along land Slope Tie-back
Rate contour (ft) Height (R) (%) distance (R)
(gpmJsq ft)
0.3 30D.0 3.D 3.00 100.0
*Sediment Storage: O.OO ac-R
*No sediment capacity defined
Silt Fence Results:
Peak Fence Stage: 1.19 R
Peak Water Stage: 7.19 ft
Dewater Time: 0.81 days
T2p Efficiency: 73.08
Dewatering time is calcu/aced from peak stage to lowest spillway
Stage-Capacity-Discharge Table
Fence Stage

(R) Water Stage

(R) Area

(ac) Capadty

(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 0.70
0.20 0.20 0.046 0.004 0.041 1.90
0.30 0.30 0.069 0.010 0.062 1.35
0.40 0.40 0.092 0.018 0.084 1.35
0.50 0.50 0.115 0.028 0.106 1.30
0.60 0.60 0.138 0.041 0.128 1.30
0.70 0.70 0.161 0.056 0.151 1.40
0.80 0.80 0.184 0.073 0.175 1.95
0.90 0.90 0.207 0.092 0.199 1.80
1.00 1.00 0130 0.114 0.223 1.90
1.10 1.10 0.253 0.138 0.246 2.05
1.19 1.19 0.273 0.162 0.270 1.05 Peak Stage
1.20 1.20 0175 0.165 0.273
1,30 1.30 0198 0.193 0.298
1,40 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 Patl - 2-acre.scA Printed 07-22-2005