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PERMFILE54308
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PERMFILE54308
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Last modified
8/24/2016 10:57:27 PM
Creation date
11/20/2007 4:06:48 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981029
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
APPENDIX 2.05.3-9 EXPLOSIVE STORAGE AREA SEDIMENTATION POND DESIGN
Media Type
D
Archive
No
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APPENDIX 2.05.3-9 <br />• EXPLOSIVE STORAGE AREA <br />SEDIMENTATION POND DESIGN <br />SUN COAL COMPANY - MEADOWS N0. 1 <br />ROUTT COUNTY, COLORADO <br />Drainage Area = 15.9 acres <br />CN (Curve Number) = 75 <br />Hydrologic Group C <br />Slope <br />Pptlp = 1.6 PptPS = 2.0 Pt100 = 2.6 <br />Peak Calculations <br />Peak (cfs) Volume (ac/ft) <br />410 425 4100 410 Q25 4100 <br />3.5 6.7 12.7 .27 .50 .94 <br />(See Appendix 2.05.3-9A -Calculations) <br />• Construct to contain 10-year, 24-hour storm <br />Volume = .27 ac/ft <br />Depth = 3 feet <br />Embankment Square Length = 65 feet <br />Dewatering device convey 100-year, 24-hour storm <br />Flow of 12.7 cfs <br />Assume pipe length = 200 feet <br />Inlet Control CMP = No head created <br />Construct 1 foot freeboard <br />Design parabolic channel below outfall (Appendix 2.05.3-1OC) <br /> <br />_ 297 _ (Rev. 5/86) <br />
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