PERMFILE106609

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2004
• Doc Name: Attachment 10 to 12
• Section_Exhibit Name: Exhibit 7 West Pit Pond - 008A
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Cnn.,d,.M1,'IOON Pomcb ~ GhuuF
16
Subwatershed 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

(arft)
#1 1 500.000 0.200 0.200 0.000 70.000 S 137.08 18.969
500.000 118.68 18.969
#2 1 96.090 0.481 0.481 0.303 75.000 M 41.17 5.209
596.090 37.82 24.178
#3 1 62.250 0.167 0.167 0.385 55.000 M 2.12 0.426
2 47.760 0.061 0.061 0.426 55.000 M 3.74 0.328
706.100 41.26 24.934
#4 1 29.750 0.094 0.094 0.414 51.000 M 0.45 0.081
735.850 41.58 25.015
Subwatershed Sedimento%gy Detai/;

Stru
#
SWS
#
Soil K
L ft
( )
5 %
( )
C
p
~ #
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 12 0.00 0.00
0.1 11 0.00 0.00
#2 1 0.280 1,550.00 7.50 0.5100 0.3800 1 373.0 92,331 25.31 17.57
71.8 15,311 0.00 0.00
#3 1 0.280 1,337.50 21.80 0.0100 0.4100 1 1.8 4,864 1.56 1.25
2 0.280 850.00 16.10 0.0200 0.4300 1 2.5 8,437 4.13 2.72
76.1 17,417 0.40 0.26
#4 1 0.280 975.00 23.80 0.0400 0.6400 1 1.7 17,814 8.72 7.80
77.7 377,974 11.88 0.36
Subwatershed Time of Concentration Detai/s;
•
Stru SWS Land Flow Condition Slope (%) Vert. Dist. Horiz. Dis[. Velocity Time (hrs)
# # (ft) (ft) (fps)
#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-SpillwayDesign.sc4 Printed 07-16-2002