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2011-07-11_PERMIT FILE - M2011001 (12)
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2011-07-11_PERMIT FILE - M2011001 (12)
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Last modified
8/24/2016 4:35:32 PM
Creation date
7/12/2011 7:51:15 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M2011001
IBM Index Class Name
PERMIT FILE
Doc Date
7/11/2011
Doc Name
Third Adequacy Review Response
From
Tetra Tech
To
DRMS
Media Type
D
Archive
No
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Historic Runoff Calculations <br />Iverson Mine <br />Design <br />Point <br />1 <br />2 <br />Basin <br />H -1 <br />H -2 <br />Basin Area <br />Area Soil Type A/B Soil Type C/D <br />81.38 36.93 44.45 <br />23.43 15.94 7.49 <br />Imperviousness <br />I% <br />2.00 <br />2.00 <br />Slope <br />0.006 <br />0.009 <br />Runoff Coefficients <br />5 Yr 100 Yr <br />0.128 <br />0.442 <br />0.112 0.409 <br />Lc Ti Tt Tc <br />ft min min min <br />1995 46.4 64.33 111 <br />1690 41.3 41.81 83 <br />Rainfall Intensity I (in /hr) <br />5Yr 100 Yr <br />0.98 1.83 <br />1.20 2.24 <br />Basin Flows Q (cfs) <br />5 Yr 100 Yr <br />10.25 65,79 <br />3.15 21.50 <br />Soil Runoff Coeficient Table <br />5 Yr 100 Yr <br />2 <br />Type A/B 0.088 <br />Type C/D 0.162 <br />0.362 <br />0.508 <br />P:\23511\ 133-23511-10002 \Deliverables\Drainage Report\Runoff Calculations.xls <br />Site Imperviousness Table <br />Lawn 2 <br />1 -hour Point Rainfall Depth <br />5 YT 100 Yr <br />P1 1.49 2.78 <br />
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