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<br /> 14.6
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<br /> A-14
<br /> 2) Exceptions - this rule shall not apply ,61 aAeas otke4 than the
<br /> :.I 4 Univetsity
<br /> Lake. Waterwhed where it can be demonstrated that
<br /> , 7
<br /> . d stormwater discharge velocities will not create an
<br /> . erosion problem in the receiving watercourse,
<br /> -I
<br /> 3) The following is a table of permissible velocity for stormwater
<br /> .: - 1 discharges: -
<br /> .
<br /> : I 1
<br /> . ,
<br /> 1 I
<br /> Maximum mum Permissible
<br /> Material
<br /> Velocities For
<br /> F.P.S. M.P.5. .
<br /> .. .
<br /> 'l 4 Fine Sand (noncolloidal) 2.5 .8
<br /> a
<br /> . ' 1 Sandy Loam (noncolloidal) 2.5 .8
<br /> Silt Loam (noncolloidal) 3.0 .9 .
<br /> i
<br /> .. i
<br /> :
<br /> 0.1irldiienlryav:lrm Loam
<br /> 3.5 1.1
<br /> 5.0 1.5
<br /> Stiff Clay (very colloidal) 5.0 1:5
<br /> Graded, Loam to Cobbles (noncolloidal) 5.0 1.5
<br /> 1 ,
<br /> Graded, Silt to Cobbles (colloidal) 5.5 1.7
<br /> Alluvial Slits (noncolloidal) 3.5 1.1
<br /> Alluvial Silts (colloidal) 5.0 1.5
<br /> f
<br /> .•
<br /> 4 Coarse Gravel (noncolloidal) 6.0 1.8
<br /> • Cobbels and Shingles
<br /> 5.5 1.7
<br /> Shale and Hard Pans
<br /> 6.0 1.8 I ti
<br /> . . .
<br /> Source: Adopted from recommendations by Special Committee on Irrigation
<br /> , • -
<br /> , ..1 j
<br /> Research, Americal Society of Civil Engineers, 1926, for channels
<br /> with straight alignment. For sinuous channels multiply allowable
<br /> 1 . velocity by 0.95 for slightly sinuous, by 0.9 for moderately
<br /> sinuous channels, and by 0.8 for highly sinuous channels.
<br /> Amended Effective (December 6, 1978 and April 8, 1980)
<br /> _. ..,
<br /> Section 10 Borrow and Waste Areas
<br /> I
<br /> •
<br /> ...
<br /> .....,. ... When the person conducting the land-disturbing activity is also the person
<br /> conducting the borrow and waste disposal activity, areas from which borrow
<br /> is obtained and which are not regulated by the provisions of the Mining
<br /> • . Act of 1971, and waste areas for surplus materials other than landfills
<br /> , .
<br /> regulated by the Department of Human Resources, Division of Health Services,
<br /> shall be considered as part of the land-disturbing activity where the borrow
<br /> material is being used or from which the waste material originated. When
<br /> the person conducting the land-disturbing activity is not the person
<br /> obtaining the borrow and/or disposing of the waste,these areas shall be
<br /> . I considered a separate land-disturbing activity.
<br /> - 1 Section 11 Access, and Haul Roads,
<br /> -,
<br /> • 2
<br /> Temporary access and haul roads, other than public roads, constructed or
<br /> ' 4 used in connection with any land-disturbing activity shall be considered
<br /> 1 a part of such activity. With kespect to deveCopmeat 4:11 the Univets.Zty
<br /> - 1
<br /> • Lake Wate4shed, these access and haue /wads slate have avet pads ptaccd
<br /> I '
<br /> at the ent:Lanee o6 the site c a eand-diztuithing actEvi-ty.
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