PERMFILE66295

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 9/27/2007
• Doc Name: YPM-9 to YPM-21
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13.12.3 Part 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Subtiratershed Hydro%gy Detai/:

Stru
#
SWS
#
SWS Area
(ac) Time of
Conc

(hrs)
Musk K
(hrs)
Musk X
Curve
Number
UHS Peak
Discharge

(ds) Runoff
Volume

(ac-ft)
k9 1 24.600 0.166 0.000 0.000 71.000 M 1.74 0.322
24.600 1.74 0.322
#B 1 7.600 0.052 0.000 0.000 71.000 M 1.22 0.099
~' 7.600 1.22 0.099
#7 1 5.200 0.075 0.000 0.000 71.000 M 0.83 0.068

~ 37.400 2.78 0.489
#6 1 13.000 0.086 0.000 0.000 55.000 M 0.00 0.001
v~ 13.000 0.00 0.001
#6 1 27.100 0.087 0.000 0.000 68.000 M 2.19 0.238
27.100 2.19 0.238
#4 I 17.000 0.097 0.000 0.000 59.000 M 0.03 0.019
17.000 0.03 0.019
#3 1 29.100 0.151 0,000 0.000 68.000 M 0.55 0.168
~' 19.100 0.55 0.168
#2 1 61.500 0.220 0,000 0.000 70.000 M 2.98 0.710
S' 61.500 2.98 0.710
#1 1 343.500 0.410 0.000 0.000 48.000 M 0.00 0.000
518.700 6.07 1.624
Subsnratershed Time of Concentration Details:

8tru SWS Land Flow Condition Slope (%) Vert. Dist. Horiz. Dist. Velocity Time (hrs)
t: # (R) (h) (fPs)
#1 1 1. Forest with heavy ground litter 10.00 40.00 400.00 0.800 0.138
7. Paved area and small upland 18.52 50.00 270.00 8.660 0.008
gullies
7. Paved area and small upland 12,46 525.00 4,223.00 7.100 0.164
gullies
7. Paved area and small upland 5.54 50.00 902.00 4.730 0.052
gullies
8. Large gullies, diversions, and low 3,95 11.30 286.00 5.960 0.013
Flowing streams
8. Large gullies, diversions, and low 7,63 60.19 1,051.01 8.280 0.035
flowing streams
#1 1 Time of Concentration: 0.410
Filename: YPM-11 TR36.sc4
E2-JS
Printed 08-15-2007
13-12.3-137 Revised 08/07