PERMFILE46830

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 08 TAB 4.17 West Rockfall Hazard Trench Outslope, X-Sect J-L, 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.
S~~ Company, Name: Greystone Development Consultants
Filename: C:\SCAD\DT\TCC\SAEJLOUT User: CW BEGEJ
Date: 06-06-1995 Time: 15:11:40
SAE DEMO, WEST ROCKFALL HAZARD TRENCH OUTSI,OPE, X-SECT J-L, 10-YR 24-H
Storm: 1.80 inches, 10 year-24 hour, SCS Type II
Hydrograph Convolution Interval: 0.1 hr
NON-POND STRUCTURE INPUT/OUTPUT TABLE
J1, B1, S1
OUTSL J-L
Drainage Area from J1, B1, S1, SWS(s)1-3: 0.6 acres
Total Contributing Drainage Area: 0.6 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 Spacing Rate Factor Length Width Slope
# (in) (in) (iph) (N-sq m) (ft) (ft) (~)
------------------ ------ --------------
1 0.0120 9.0 1.0 0.05 20.000 5.0 580.0 33.0
'~~ Total Filter Peak Critical Filter Sediment
Trap Infiltration Infiltration Flow Prone Travel Wedge Depth
Efficiency Volume Rate Depth Velocity Time Location in Zone D
(~) (ac-ft) (cfs) (inch) (fps) (hrs) (feet) (inch)
96.4 0.0024 0.0034 0.015 1.0367 0.1000 0.035 0.0256
Runoff Peak Peak Sediment Peak Settleable
Volume Discharge Sediment Concentration Concentration 24VW 24AA
(ac-ft) (cfs) (tons) (mg/1) ml/1 (ml/1) (ml/1)
IN 0.05 0.61 0.3 7537 x5.11 3.20 0.54
OUT 0.05 0.61 0.0 437 0.00 0.00 0.00

i%
TAB 4.17, PG 3
lI/1/99
Permi[ Renewal No. 3 FORMERLY EX 8-180