2022-07-12_PERMIT FILE - C1981019A ‎(12)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 7/12/2022
• Doc Name: Section 25 Pond Sediment Control During Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part B
• Media Type: D
• Archive: Yes

Stru
#
SWS
#
SWS Area
(ac)
Time of
Conc
(hrs)
Musk K
(hrs)Musk X Curve
Number UHS
Peak
Discharge
(cfs)
Runoff
Volume
(ac-ft)
#2 613.700 53.58 9.100
#1 613.700 8.84 6.831
Subwatershed Sedimentology Detail:
Stru
#
SWS
#Soil K L (ft) S (%) C P PS #
Sediment
(tons)
Peak
Sediment
Conc.
(mg/l)
Peak
Settleable
Conc
(ml/l)
24VW
(ml/l)
#14 1 0.300 50.00 27.00 1.0000 0.9000 1 27.1 334,377 190.58 99.77
2 0.300 400.00 9.00 0.0310 0.9000 1 0.0 1 0.00 0.00
3 0.300 75.00 10.00 0.0100 0.3800 1 0.0 107 0.06 0.05
4 0.300 400.00 7.00 0.0310 0.9000 1 0.0 1 0.00 0.00
27.1 334,377 190.58 86.31
#15 1 0.300 400.00 6.00 1.0000 0.9000 1 539.0 225,073 122.28 64.57
2 0.300 200.00 10.00 0.0310 0.9000 1 0.0 1 0.00 0.00
566.1 224,596 122.31 65.42
#25 1 0.300 300.00 8.00 1.0000 0.9000 1 37.1 208,518 118.85 61.15
37.1 208,518 118.85 61.15
#24 37.1 208,518 118.85 61.15
#23 37.1 208,518 118.85 61.15
#22 1 0.300 400.00 6.00 1.0000 0.9000 1 81.2 186,855 101.52 53.34
2 0.300 300.00 9.00 0.0310 0.9000 1 0.0 1 0.00 0.00
3 0.300 50.00 2.00 1.0000 0.9000 1 4.5 27,248 15.53 7.82
122.8 166,701 92.07 45.22
#21 122.8 166,701 92.07 45.22
#20 122.8 166,701 92.07 45.22
#18 1 0.300 200.00 8.00 1.0000 0.9000 1 28.7 172,007 98.04 50.21
151.5 160,691 89.29 46.13
#19 1 0.300 200.00 9.00 0.0310 0.9000 1 0.0 1 0.00 0.00
2 0.300 400.00 8.00 1.0000 0.9000 1 68.9 228,801 123.69 65.52
68.9 228,801 123.69 65.52
#17 68.9 228,801 123.69 65.52
#16 220.4 184,350 101.57 50.73
#13 220.4 184,350 101.57 50.73
Filename: Exhibit 7 Item 23 Part B 10-Yr 24-Hr Section 25 During Mining.sc4 Printed 03-17-2022
SEDCAD 4 for Windows
Copyright 1998 -2010 Pamela J. Schwab
Civil Software Design, LLC 34