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PERMFILE59454
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PERMFILE59454
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Entry Properties
Last modified
8/24/2016 11:01:44 PM
Creation date
11/20/2007 6:18:30 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
5/22/2002
Doc Name
Amendment Area Mine Facilities
Section_Exhibit Name
NH2 1996 Section 2.05.3(3) Attachment 2.05.3(3)-10
Media Type
D
Archive
Yes
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CULVERT A-13 BASIN 22 <br />• Time of Concentration (SCS Method) 04/30/2002 09:07 <br />• <br />• <br />Curve Number: 75.28 <br />Length of Flow (ft): 521.66 <br />Average Land Slope (): 11.28 <br />Time of Concentration (hrs): 0.11 <br />Graphical Peak Discharge <br />Project: CULVERT A-13 By: R.L.G <br />Location: POND009&27RD Checked <br />Present <br />1. Data: <br />Drainage area :....................A = 21.1400 Acres <br />Runoff Curve Number :.............CN = 75 <br />Time of Concentration:...........Tc = 0.11 <br />Pond and swamp areas spread <br />throughout watershed ............... = 0.00 percent of A <br />0.0000 Acres <br />2. Frequency ..................... ...yr = 10 <br />3. Rainfall,P(24-hour) ........ ......in = 2.00 <br />4. Initial abstraction, la...... ...... = 0.6567 <br />5. Compute la/P ................ ....... = 0.3284 <br />6. Unit peak discharge, qu ......csm/in = 887.25 <br />7. Runoff,O ....................... ..in = 0.3900 <br />8. Pond & swap adjustment factor,...Fp = 1.00 <br />9. Peak Discharge,gp ....... ........cfs = 11.4284 <br />(i2EVISED 4-30-02) <br />Date: <br />Attachment 2.05.3(3) -10-118 <br />04/30/2002 09:10 <br />Date: 04/30/02 <br />
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