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
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Subwatershed Hydro%gy Detai/;
16

S[ru
#
SWS
# SWS Area

(ac) Time of
Conc
(ham) Musk K

(hrs)
MuskX Curve

Number
UHS Peak
Discharge
(~) Runoff
Volume
(arft)
#1 1 500.000 0.200 0.200 0.000 70.000 S 331.36 42.004
500.000 291.19 42.004
#2 1 96.090 0.481 0.481 0.303 75.000 M 86.65 10.424
596.090 80.56 52.428
#3 1 62.250 0.167 0.167 0.385 55.000 M 18.30 1.794
2 47.760 0.061 0.061 0.426 55.000 M 31.62 1.376
706.100 94.17 55.598
#4 1 29.750 0.094 0.094 0.414 51.000 M 11.66 0.552
735.850 96.24 56.150
Subwatershed Sedimento%gy Detai/;
[I

S~u

5#S

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 0.3 13 0.00 0.00
0.3 13 0.00 0.00
#2 1 0.280 1,550.00 7.50 0.5100 0.3600 1 834.5 103,169 31.66 21.91
154.6 19,774 0.00 0.00
#3 1 0.280 1,337.50 21.80 0.0100 0.4100 1 13.8 11,053 3.60 2.26
2 0.280 850.00 16.10 0.0200 0.4300 1 18.1 19,028 9.31 4.74
183.2 18,157 1.06 0.70
#4 1 0.280 975.00 23.80 0.0400 0.6400 1 31.5 80,551 39.43 20.23
213.9 32,383 3.85 1.59
Subwatershed Time of Concentration Detai/s:

Stru
# SWS
# lynd 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
>12 1 Time of Concentration: 0.481
#3 1 6. Grassed waterway 18.57 260.00 1,400.00 6.460 0.060
Filename: WestPit-Freeboard Design.sc4
Printed 07-16-2002