2020-05-18_PERMIT FILE - C1981019A ‎(5)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 5/18/2020
• Doc Name: Collom in Pit Drilling Small Area Exemption Demonstrations
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 25A
• Media Type: D
• Archive: Yes

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Subwatershed Hydrology Detail;
SWS Area Time of Musk K Curve Peak Runoff
Stru SWS Conc Musk X UHS Discharge Volume
# # (ac) (hrs) (hrs) Number (cfs) (ac-ft)
#1 1 9.700 0.125 0.000 0.000 47.000 S 0.00 0.000
6 9.700 0.00 0.000
#2 1 0.500 0.055 0.000 0.000 85.000 F 0.36 0.023
6 10.200 0.36 0.023
#3 6 10.200 0.36 0.021
Subwatershed Sedimentology Detail;
Peak Peak
Stru SWS Soil K L(ft) S(%) C P PS# Sediment Sediment Settleable 24VW
# # (tons) Conc. Conc (MI/1)
(mg/0 (MI/1)
#1 1 0.300 200.00 9.00 0.0310 0.9000 1 0.0 1 0.00 0.00
6 0.0 1 0.00 0.00
#2 1 0.300 150.00 1.00 1.0000 0.9000 1 0.3 17,191 9.80 5.57
6 0.3 17,191 9.80 5.57
#3 6 0.1 5,364 0.41 0.20
Subwatershed Time of Concentration Details;
Stru SWS Land Flow Condition Slope(%) Vert. Dist. Horiz. Dist. Velocity Time(hrs)
# # (ft) (ft) (fps)
#1 1 3. Short grass pasture 9.00 97.56 1,083.99 2.400 0.125
#1 1 Time of Concentration: 0.125
#2 1 5. Nearly bare and untitled, and 1.00 2.00 200.00 1.000 0.055
alluvial valley fans
#2 1 Time of Concentration: 0.055
Filename: Drill Pad SAE.sc4 Printed 04-08-2020