Laserfiche WebLink
II-B-7 Att. <br /> 2 G <br /> Ji e as S.vi':.i C.',1 - _.tea i • 1. _ �. �.. V_—.-J - _�v=� 1�.:7 <br /> __ vcl"=z <br /> 2:0 - , a _:-.c d;er.....e sl'.ed G __`. :1.,.0 ara. �.CG��.. _ .= -.-.`.� i'!'r. an. <br /> _ ,-u5 G n <br /> cry zC:7 S10Ce Of 3 . 4 -percent, <br /> -..lo'N vel.oci�_es will she <br /> _: V - L4 <br /> re::uced by ditch cheeks on 100 foot centers . <br /> _ 1-00 G s nc1ude <br /> c=: G - iwc additional culverts , (three i a) <br /> Hale :.ee:� _nstaileG. Both culverts are censid-ered critical because <br /> of she very iaryZ tributary drainace area uLstream. These culverts <br /> are at 112+00 G and 150+30 G. <br /> cul% erts , installed prior to October 1979 are at these locations , <br /> however, the desi;n storm flows are in excess of available culvert <br /> ca azciLies , though t..e,I conform to the existing environmental <br /> per=cr:Trance s zandardS . <br /> Ditch checks are not required. <br /> pcuncff Ditches at Curves - Al-most all hairpin curves will have <br /> diversion ditches to divert Stcr::i runoff onto natural slopes cr int <br /> s zrea_s . yresLcn ±rotection will be recuirec where rumor_ _.L <br /> velocities exceed 5 =ps (see Plat 1) . <br /> Ccnc, s i ^ra <br /> Seve nzeen new c�lvert� have beer. installed to aug:�ei:t the esis�__:g <br /> i Cu_ve_is * "_'he selection of <br /> C11'Ier_ loco _Ln s a.: .'.G S1 =5 :'.as Q..e <br /> — r <br /> �:.ar_au� sur=ace ru c'F_ _rLm a _un 'ear 2 ._cu- -- - - I-- <br /> �c <br /> - - tio� i -,a . �re� are nc _ <br /> C^nai _-CnS r:c__ant SuC: S iCzu <br /> Pages 7/14 <br /> * Some proposed culverts were later determined infeasible due to <br /> site conditions and were not installed. {TR-22 - 101911 <br />