2022-07-12_PERMIT FILE - C1981019 ‎(24)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 7/12/2022
• Doc Name: Sediment 26 Pond Sediment Control During Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part C
• Media Type: D
• Archive: No

Subwatershed Hydrology Detail:
Stru
#
SWS
#
SWS Area
(ac)
Time of
Conc
(hrs)
Musk K
(hrs)Musk X Curve
Number UHS
Peak
Discharge
(cfs)
Runoff
Volume
(ac-ft)
#7 1 1.900 0.016 0.000 0.000 74.000 F 0.57 0.041
2 16.800 0.216 0.000 0.000 47.000 M 0.00 0.000
3 5.800 0.132 0.000 0.000 85.000 F 3.48 0.304
4 26.400 0.193 0.000 0.000 47.000 M 0.00 0.000
5 4.500 0.031 0.000 0.000 47.000 M 0.00 0.000
55.400 3.76 0.345
#6 1 56.500 0.056 0.000 0.000 74.000 F 16.88 1.227
2 7.300 0.044 0.000 0.000 85.000 F 5.32 0.396
63.800 22.20 1.623
#8 1 1.700 0.018 0.000 0.000 85.000 F 1.24 0.092
65.500 23.44 1.716
#5 65.500 23.44 1.716
#4 1 1.500 0.017 0.000 0.000 85.000 F 1.09 0.081
67.000 1.47 1.596
#3 122.400 5.22 1.941
#2 1 1.000 0.010 0.000 0.000 85.000 F 0.73 0.054
2 1.900 0.014 0.000 0.000 57.000 M 0.00 0.000
3 3.000 0.003 0.000 0.000 85.000 F 2.19 0.163
128.300 8.14 2.158
#1 128.300 0.82 1.888
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)
#7 1 0.300 145.00 31.00 0.4500 1.0000 1 10.8 395,631 225.50 99.10
2 0.300 400.00 4.00 0.0310 0.9000 1 0.0 1 0.00 0.00
3 0.300 400.00 4.80 1.0000 0.9000 1 32.1 142,690 77.52 40.52
4 0.300 400.00 9.00 0.0310 0.9000 1 0.0 1 0.00 0.00
5 0.300 200.00 27.00 0.0310 0.9000 1 0.0 1 0.00 0.00
42.9 180,100 99.06 47.97
#6 1 0.300 200.00 31.00 0.4500 1.0000 1 584.9 637,845 363.55 167.88
2 0.300 200.00 6.00 1.0000 0.9000 1 40.5 141,378 80.58 41.11
Filename: Section 26 10-Year 24-Hour During Mining.sc4 Printed 03-14-2022
SEDCAD 4 for Windows
Copyright 1998 -2010 Pamela J. Schwab
Civil Software Design, LLC 14