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PERMFILE121066
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Last modified
8/24/2016 10:19:33 PM
Creation date
11/25/2007 9:03:25 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
DESIGN CALCULATIONS FOR THE SANBORN CREEK PORTAL AREA, HAUL ROAD & CONVEYOR BELT CORRIDOR
Section_Exhibit Name
Exhibit 2.05-E3 SECTION 3
Media Type
D
Archive
No
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PEAK FLOW CALCULATIONS <br />• AREA AREA <br />NO.1 N0.2 <br />DRAINAGE AREA (ACRES) 10.2 22.1 <br />CURVE N0. 63 80 <br />STORM EVENT YR., 24 HR. 10 10 <br />STORM EVENT in. 2.0 2.0 <br />RUNOFF 0.10 0.56 <br />WATERSHED RELIEF 450 1060 <br />Lc 25 250 850 <br />Lc 50 500 550 <br />Lc 75 825 300 <br />WATERSHED SLOPE 0.40 0.47 <br />SLOPE ADJUSTMENT FACTOR 1.12 STEEP 1.20 <br />LENGHT OF WATERSHED 1100 2300 <br />EQUIVALENT DRAINAGE AREA 15.9 54.4 <br />PEAK FLAW cfs/in Fig D-2 20.0 60.0 <br />ADJUSTED PEAK FLOW 1.46 16.44 <br /> AREA AREA <br /> N0.3 N0.4 <br />DRAINAGE AREA (ACRES) 2.5 0.4 <br />CURVE NO. 80 80 <br />STORM EVENT YR., 24 HR. 10 10 <br />STORM EVENT in. 2.0 2.0 <br />i RUNOFF 0.56 0.56 <br />WATERSHED RELIEF 470 190 <br />Lc 25 300 125 <br />Lc 50 250 75 <br />Lc 75 125 50 <br />WATERSHED SLOPE 0.73 0.68 <br />SLOPE ADJUSTMENT FACTOR 1.17 STEEP 1.17 <br />LENGHT OF WATERSHED 720 310 <br />EQUIVALENT DRAINAGE AREA 7.9 1.9 <br />PEAK FLOW cfs/in Fig D-2 14.0 4.9 <br />ADJUSTED PEAK FLOW 2.93 0.67 <br />STEEP <br />STEEP <br />. 5-89 <br />
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