2022-07-12_PERMIT FILE - C1981019 ‎(17)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 7/12/2022
• Doc Name: Coal Stockpile Pond
• Section_Exhibit Name: Volume 18 Exhibit 7, Item 23 Part M
• Media Type: D
• Archive: No

Subwatershed Time of Concentration Details:
Stru
#
SWS
#Land Flow Condition Slope (%)
Vert. Dist.
(ft)
Horiz. Dist.
(ft)
Velocity
(fps)Time (hrs)
#2 1
5. Nearly bare and untilled, and
alluvial valley fans 25.00 22.50 90.00 5.000 0.005
#2 1 Time of Concentration: 0.005
#2 2 3. Short grass pasture 6.00 12.12 202.00 1.950 0.028
#2 2 Time of Concentration: 0.028
#2 3
5. Nearly bare and untilled, and
alluvial valley fans 6.00 3.66 61.00 2.440 0.006
#2 3 Time of Concentration: 0.006
#2 4
5. Nearly bare and untilled, and
alluvial valley fans 11.00 21.34 194.00 3.310 0.016
#2 4 Time of Concentration: 0.016
#2 5
5. Nearly bare and untilled, and
alluvial valley fans 13.00 50.05 385.00 3.600 0.029
#2 5 Time of Concentration: 0.029
#3 1
5. Nearly bare and untilled, and
alluvial valley fans 8.00 44.64 558.00 2.820 0.054
#3 1 Time of Concentration: 0.054
#3 2 3. Short grass pasture 7.00 3.78 54.00 2.110 0.007
#3 2 Time of Concentration: 0.007
#3 3 3. Short grass pasture 15.00 13.95 93.00 3.090 0.008
#3 3 Time of Concentration: 0.008
#3 4
5. Nearly bare and untilled, and
alluvial valley fans 2.00 17.58 879.00 1.410 0.173
#3 4 Time of Concentration: 0.173
#5 1
5. Nearly bare and untilled, and
alluvial valley fans 3.00 45.66 1,522.00 1.730 0.244
#5 1 Time of Concentration: 0.244
#7 1 3. Short grass pasture 8.00 16.79 210.00 2.260 0.025
#7 1 Time of Concentration: 0.025
#7 2
5. Nearly bare and untilled, and
alluvial valley fans 12.00 28.20 235.00 3.460 0.018
#7 2 Time of Concentration: 0.018
#7 3
5. Nearly bare and untilled, and
alluvial valley fans 6.20 39.74 641.00 2.480 0.071
#7 3 Time of Concentration: 0.071
#8 1
5. Nearly bare and untilled, and
alluvial valley fans 2.00 20.27 1,014.00 1.410 0.199
#8 1 Time of Concentration: 0.199
#8 2
7. Paved area and small upland
gullies 1.00 0.75 75.00 2.010 0.010
#8 2 Time of Concentration: 0.010
#12 2
5. Nearly bare and untilled, and
alluvial valley fans 13.00 47.19 363.00 3.600 0.028
#12 2 Time of Concentration: 0.028
#12 3
5. Nearly bare and untilled, and
alluvial valley fans 2.00 24.78 1,239.00 1.410 0.244
Filename: Exhibit 7 Item 23 Part M 100-Yr 24-Hr Coal Pond.sc4 Printed 03-16-2022
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