PERMFILE135209

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2004
• Doc Name: Attachment 1 to 9
• Section_Exhibit Name: Exhibit 7 West Pit Pond - 008A
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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16
Subwatershed Hydro%gy Detai/;

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

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

(cfs) Runoff
Volume

(ac-ft)
#1 1 500.000 0.200 0.200 0.000 70.000 S 68,10 15.142
500.000 59.10 15.142
#2 1 96.090 0.481 0.481 0.303 75.000 M 23.09 4.301
596.090 21.27 19.443
#3 1 62.250 0.167 0.167 0.385 55.000 M 0.27 0.258
2 47.760 0.061 0.061 0.426 55.000 M 0.28 0.198
706.100 21.50 19.900
#4 1 29.750 0.094 0.094 0.414 51.000 M 0.06 0.036
735.850 21.50 19.935
Subwatershed Sedimento%gy Detai/;

Stru
#
SWS
#

Soil K

L (ft)

5 (%)

C

P

PS #
Sediment

(tons) Peak
Sediment
Conc.

(mg/I) Peak
Settleable
Conc

(ml/I)
24VW

(ml/I)
#1 1 0.280 1,000.00 0.01 0.0010 1.0000 1 0.1 11 0.00 0.00
0.1 10 0.00 0.00
#2 1 0.280 1,550.00 7.50 0.5100 0.3800 1 242.4 90,031 25.97 14.61
54.1 20,666 0.00 0.00
#3 1 0.280 1,337.50 21.80 0.0100 0.4100 1 0.4 1,730 0.76 0.68
2 0.280 850.00 16.10 0.0200 0.4300 1 0.4 1,856 0.91 0.79
55.0 20,767 0.15 0.07
#4 1 0.280 975.00 23.80 0.0400 0.6400 I 0.4 9,172 4.49 3.67
55.1 21,197 0.17 O.OS
Subwatershed Time of Concentration Detai/s:

Stru
# SWS
# Land Flow Condition Slope (%) Vert. Dist.
(ft) Horiz. Dist.
(ft) Velocity
(fps) Time (hrs)
#2 1 3. Short grass pasture 3.48 80.00 2,300.00 1.490 0.428
6. Grassed waterway 12.00 120.00 1,000.00 5.190 0.053
#2 1 Time of Concentration: 0.481
#3 1 6. Grassed waterway 18.57 260.00 1,400.00 6.460 0.060
Filename: WestPit-25yr.sc4 Printed 07-16-2002