PERMFILE105595

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 08 TAB 4.18 #7 North Escape Shaft N Outslope, 10yr 24hr SAE
• Media Type: D
• Archive: No

Civil Software Design -- SEDCAD+ Version 3.1
Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved.
Comppanyy Name: CYPRUS YAMPA VALLEY COAL
Filename: E:\SEDCAD3\TCCSAE\ESCOUTL User: CW BEGEJ
i ~ Date: 08-03-1995 Time: 09:41:41
•~ SAE DEMO FOR PAD'S N OUTSLOPE AT f7 NORTH ESCAPE SHAFT, 10/24 STORM
Storm: 1.80 inches, 10 ear-24 hour, SCS Type II
Hydrograph Convolution Interval: 0.1 hr
NON-POND STRUCTURE INPUT/OUTPUT TABLE
J1,~B1, S1
NORTH OUTSLOPE
Drainage Area from J1, B1, S1, SWS(s)1: 0.1 acres
Total Contributing Drainage Area: 0.1 acres
GRASS FILTER INPUTS:
Bulk Specific Gravity: 1.25
Initial Depth of Sediment in Zone D: 0.00 inches
Manning's Grass Grass Infiltration Stiffness ------ Filter --
Seg n Height
(in)
f Spacing Rate
n
i
h Factor Lenggth Width
(N-s
m
ft
ft Slo e
~~
_
____ __ _
~ (i
) (
p
) q
) (
) (
) (
1 0.0170
9.0 1.0 0.05 20.000 10.0 165.0 14.2
Total Filter Peak Critical Filter Sediment
Trap Infiltration
Effi
i
V
l Infiltration Flow Prone Travel Wedgge
it
i
i
i Depth
c
ency
o
ume Rate Depth Veloc
y T
me Loca£
on
n Zone
(~) (ac-ft) (cfs) (inch) (fps) (hrs) (feet) (inch)
99.4 0.0002 0.0019 0.013 1.0367 0.1000 '0.036 0.00_
• Runoff Peak Peak Sediment Peak Settleable
Volume Discharge Sediment Concentration Concentration 24VW 24AA
(ac-f t) (cfs) (tons) (mg/1) ml/1 (ml/1) (ml/1)
IN 0.00 0.06 0.1 28696 17.82 14.49 0.50
OUT 0.00 0.06 0.0 261 0.00 0.00 0.00

•
TAB 4.18, PG 5
Permit Renewal No. 3 11/1/99