PERMFILE70516

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 08 TAB 4.12 Water Tank Rockfall Hazard 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\TCCSS\WTNKOUT User: CW BEGEJ
Date: 06-01-1995 Time: 11:13:50
SAE DEMONSTRATION, ROCKFALL HAZARD TRENCH, H2O TANK, OUTSLOPE:lOY-24H
Storm: 1.80 inches, 10 ear-24 hour, SCS Type II
Hydrograph Convolution Interval: 0.1 hr
SUBWATERSHED/STRUCTURE INPUT/OUTPUT TABLE
-Hydrology-
Base- Runoff Peak
JBS SWS Area CN UHS Tc K X Flow Volume Discharq[
(ac) (hrs) (hrs) (cfs) (ac-f t) (cfs)
111' 1 0.35* 90 F 0.002 0.000 0.391 0.0 0.03 0.34
111 2 0.08* 90 F 0.000 0.000 0.000 0.0 0.01 0.08
111 3 0.00 0 M 0.000 0.000 0.000 0.0 0.00 0.00
Type: Grass Filter Label: OUTSLJDIST
111
- Structure
-
--
- 0.44
-
-
--
- 0.03
--
--
-
-------
--
-
111 --
--
--
--
Total IN ----------
0.44 ---- ----- ------ --
--
- --
-- ---
--- -
--
0.03 ---
0.42
111 Total OUT 0.02 0.39
SUBWATERSHED/STRUCTURE INPUT/OUTPUT TABLE
-Sedimentology-
SED: Sediment
SCp: Peak Sediment Concentration
.) SSp: Peak Settleable Concentration
24VW: Volume Weighted Average Settleable Concentration - Peak 24 hours
24AA: Arithmetic Average Settleable Concentration - Peak 24 hours
JBS SWS K L
(ft)
R 111 1 0.32N 68.0
R 111 2 0.32 15.0
R 111 3 0.00 0.0
111 Structure TY
--------------------
111 Total IN
111 Total OUT
~'
PS
S CP Tt # SED SCp SSp 24VW 24AA
($) (hrs) (tons) (mg/1) (ml/1) (ml/1) (ml/1
66.0 0.013 0.000 1 0.2
60.0 0.013 0.000 1 0.0
0.0 0.000 0.000 0 0.0
pe: Grass Filter Label: OUTSL/DIST
0.3
--------------------------------------------------------
0.3 11405 7.72 5.01 0.6
0.0 46 0.00 0.00 0.0
TAB 4.12, PG 3
1111/99
Permit Renewal No. 3 FORMERLY EX 8-150