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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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AREA AREA <br />N0.5 N0.6 <br />DRAINAGE AREA (ACRES) <br />• CURVE N0. <br />STORM EVENT YR., 24 HR. <br />ST ORM EVENT in. <br />RUNOFF <br />WATERSHED RELIEF <br />Lc 25 <br />Lc 50 <br />Lc 75 <br />WATERSHED SLOPE <br />SLOPE ADJUSTMENT FACTOR <br />LENGHT OF WATERSHED <br />EQUIVALENT DRAINAGE AREA <br />PEAK FLOW cfs/in Fig D-2 <br />ADJUSTED PEAK FLOW <br />DRAINAGE AREA (ACRES) <br />CURVE N0. <br />STORM EVENT YR., 24 HR. <br />STORM EVENT in. <br />RUNOFF <br />WATERSHED RELIEF <br />Lc 25 <br />Lc 50 <br />~Lc 75 <br />WATERSHED SLOPE <br />SLOPE ADJUSTMENT FACTOR <br />LENGHT OF WATERSHED <br />EQUIVALENT DRAINAGE AREA <br />PEAR FLOW cfs/in Fig D-2 <br />ADJUSTED PEAK FLOW <br />1.8 1.4 <br />The peak run-off for area no. 5 was reclaculated with the use of <br />the computer program Storm. The results of the recalculation area as <br />follows: <br />-- Watershed data for Area No. 5 <br />Curve No. <br />Area <br />Hydraulic Length <br />Elevation Change <br />Concentration Time <br />Concentration time type <br />Unit hydrograph type <br />-- Storm Data <br />Total Precipitation <br />storm Type <br />Peak Discharge - Area No. 5 <br />Discharge "'plume <br />51.6 1050 <br />80 57 <br />10 10 <br />2.0 2.0 <br />0.56 0.03 <br />1370 3180 <br />1000 8000 <br />1250 7750 <br />1500 5500 <br />0.57 0.37 <br />1.25 STEEP 1.30 STEEP <br />2420 19800 <br />59.3 1969 <br />65.0 500 <br />39.8 * 10.4 <br />See Below 28.63 <br />AREA AREA <br />uAu nBu <br />0.60 1.30 <br />89 92 <br />10 10 <br />2.0 2.0 <br />1.03 1.24 <br />N/A N/A <br />N/A N/A <br />N/A N/A <br />N/A N/A <br />0.08 0.01 <br />0.92 STEEP 1.00 FLAT <br />200 1120 <br />0.9 16.4 <br />3.0 14 <br />= 80 <br />= 51.6 Acres <br />= 2420 Feet <br />= 1370 Feet <br />_. 0.04 Hours <br />= SCS Upland Curve <br />= Disturbed <br />= 2.000 Inches <br />= SCS Type 2 - 24 Hour Storm <br />= 28.63 CFS <br />= 2.42 Acre-Feet <br />• B-90 5/93 <br />
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