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_ .. _ ,._tr. - @,�t,Zo�Iy35a'.GIYaTua sa.a�i ry...•. ui. yu.a.a..�..ar t+; r.. <br /> streams. Carrboro also has standards for intermittent streams ` �'e�e` <br /> ir:fereas the County does not. <br /> ..il_-in <br /> A-14 <br /> Z) Exce tests - this rule shall not apply ill ah¢ay otite�t than the <br /> Lake watenahed where it can be demonstrated that <br /> stormwater discharge velocities will not create an <br /> } erosion problem in the receiving watercourse. <br /> 3) The.f011owing is a table of permissible <br /> discharges: velocity for stormwater <br /> Matt Maximum Permissible ` <br /> Velocities For <br /> Fine Sand (noncolloidal) <br /> Sandy Loam (noncolloidal) 2.5 .8 <br /> Silt Loam (noncolloidal) 2.5 .8 <br /> Ordinary Firm Loam 3.0 .9 i <br /> Fine Gravel 3.5 1.1 <br /> Stiff Clay (very colloidal) 5.0 <br /> 5.0 1.5 <br /> Graded, Loam to Cobbles (noncolloidal) 5.0 1':5 <br /> Graded, Silt to- Cobbles (colloidal) 1.5 i <br /> i Alluvial Silts (noncolloidal) 5.5 1.7 ; <br /> Alluvial Silts (colloidal) 3.5 1.T M ` <br /> Coarse Gravel (noncolloidal) 5.0 1.5 <br /> Cobbels and Shingles . 5.0 .1.$ <br /> Shale and Hard Pans 5.5 1.7 <br /> 6.0 1.$ <br /> i <br /> Source: Adopted from recommendations by Special Committee on Irrigation <br /> Research, Atnerical Society of Civil Engineers, 1926, for channels <br /> with straight alignment. For sinuous channels multiply <br /> velocity by 0.95 for slightly sinuous, by 0.9 for moeatelyowable <br /> �1 sinuous channels, and by 0.8 for highly sinuous channels. <br /> i Amended Effective (December 6, 197$ and April 8, 1980) <br /> Section 10 Borrow and Waste Areas <br /> When the person conducting the land-disturbing activity is also the person <br /> conducting the barrow 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 /> 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 /> considered a separate land-disturbing activity. <br /> Section 11 Access- and Haul Roads <br /> Temporary access and haul roads, other than public roads, constructed or <br /> used in connection with any land-disturbing activity shall be considered <br /> a part of such activity, UU11 nebpec.t -to deveeopmertt ill 'the Un.ive,44i,tt <br /> . Lake Watexslted, these access and haul toads 0utt.0-leave navel <br /> at .the Wtkance o5 .t1le sate oS a Land-diz,tatbing ac.tiv.t.ty. J <br /> Ur. 726 9 pads pQated � <br /> I <br /> w <br /> F <br /> MEMO <br /> smi. <br /> __#'m <br />