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HomeMy WebLinkAbout20170955 Ver 1_Build Maps_20170804(V e r s i o n 2 . 0 7 ; R e l e a s e d O c t o b e r 2 0 1 6 ) 38 3 7 6 . 1 . 2 TI P N o . : B- 4 4 6 2 Co u n t y ( i e s ) : Ch e r o k e e Page 1 o f 1 TI P N u m b e r : Date: Ph o n e : Ph o n e : Em a i l : Em a i l : Co u n t y ( i e s ) : CA M A C o u n t y ? No De s i g n / F u t u r e : Y e a r : 20 3 7 Ex i s t i n g : Y e a r : Aq u a t i c T & E S p e c i e s ? No Co m m e n t s : Ye s N o No N/A De c k D r a i n s D i s c h a r g e O v e r W a t e r B o d y ? (I f y e s , p r o v i d e j u s t i f i c a t i o n i n t h e G e n e r a l P r o j e c t N a r r a t i v e ) ( If y e s , d e s c r i b e i n t h e G e n e r a l P r o j e c t N a r r a t i v e ; i f n o , j u s t ify in the General Project Narrative) (I f y e s , p r o v i d e j u s t i f i c a t i o n i n t h e G e n e r a l P r o j e c t N a r r a t i v e ) ac . Tw o 9 ' p a v e d t r a v e l l a n e s w / 2 ' t o 5 ' w i de grassed shoulders, w/ grassed side slopes ra n g i n g f r o m a b o u t 3 ( H ) : 1 ( V ) t o 4 ( H ) : 1 ( V ) . 31 0 dp e t t y @ t g s e n g i n e e r s . c o m Pr o j e c t I n c l u d e s B r i d g e S p a n n i n g W a t e r B o d y ? D e c k D r a i n s D i sc h a r g e O v e r B u f f e r ? D i s s i p a t o r Pads Provided in Buffer? NR T R S t r e a m I D : An n u a l A v g D a i l y T r a f f i c ( v e h / h r / d a y ) : Existing Site Pr o j e c t L e n g t h ( l i n . m i l e s o r f e e t ) : ac. Su r f a c e W a t e r B o d y ( 1 ) : Cl a s s C NC D W R S u r f a c e W a t e r C l a s s i f i c a t i o n f o r W a t e r B o d y N/A Bu f f e r R u l e s i n E f f e c t : Pe r s i m m o n C r e e k No n e 220 Tw o 1 0 ' w i d e p a v e d t r a v e l l a n e s w / p a v e m e n t t o f a c e o f g u a r d r a i l , 0 t o 3 ' p a v e d sh o u l d e r s a n d 1 ' t o 3 ' g r a s s e d s h o u l de r s a n d 2 ( H ) : 1 ( V ) g r a s s e d s i d e s l o p e s . Wa t e r b o d y I n f o r m a t i o n 2017 NC D W R S t r e a m I n d e x N o . : 38 3 7 6 . 1 . 2 Im p a i r m e n t s : Ot h e r S t r e a m C l a s s i f i c a t i o n : Pr i m a r y C l a s s i f i c a t i o n : Pr o j e c t B u i l t - U p o n A r e a ( a c . ) Re p l a c e m e n t o f B r i d g e N o . 1 9 0 1 4 8 o n S R 1 1 2 7 ( B e l l H i l l R d . ) o v e r P e rs i m m o n C r e e k ( L a k e C h e r o k e e ) in C h e r o k e e C o u n t y s o u t h w e s t o f Murphy, NC. Proposed 70' long by 27' wi d e s i n g l e - s p a n b r i d g e t o r e p l a c e e x i s t i n g 3 6 ' l o n g b y 2 0 ' w i d e s i n g l e - s p a n b r i dg e . T h e p r o p o s e d g r a d e a c r o s s t h e b r i d g e e x c e eds existing by about 1.5' to maintain clearance an d h a s b e e n r e a l i g n e d t o r e s o l v e s i g h t d i s t a n c e i s s u e s w i t h t h e ad j a c e n t i n t e r s e c t i o n . S t o r m w a t er r u n o f f o n t h e e x i s t i n g b r i d g e discharges directly into the water along the full le n g t h o f t h e b r i d g e . T h e p r o p o s e d b r i d g e w il l h a v e n o d i r e c t d i s c h a r g e i n t o t h e w a t e r . T h e m i n i m u m n u m b e r o f d e c k d r a i n s n e c essary to mainitain safe passage by the tr a v e l i n g p u b l i c w i l l b e i n s t a l l e d o v e r t h e ov e r b a n k f l o o d p l a i n a r e a s . D r a i ns w i l l b e i n s t a l l e d a s f a r fr o m t h e s t r e a m a s p o s s ible to maximize opportunity to diffuse flow. No deck dr a i n s w i l l b e i n s t a l l e d o v e r w a t e r . T h e m a j o r i t y o f s t o r m w a t er r u n o f f f r o m t h e p r o p o s e d b r i d g e is t o f l o w t o t w o p r o p o s e d d r o p inlets, located at the east approach of the bridge. St o r m w a t e r r u n o f f w i l l b e d i s c h a r g e d a t m i n i mu m p r a c t i c a b l e s l o p e s , y i e l d i n g m i n i m u m v e l o c i t i e s an d d i f f u s e d w i t h r i p r a p p a d s a t pipe outlets, which the existing drainage does no t b e n e f i t f r o m . A l l p r o p o s e d s t o r mw a t e r r u n o f f i s d i s c h a r g e d a s f a r a w a y f r o m t he s t r e a m a n d a t l o w e s t v e l o c i t i e s a s p r a c t i c able. 70 6 H i l l s b o r o u g h S t . No r t h C a r o l i n a D e p a r t m e n t o f T r a n s p o r t a t i o n Hi g h w a y S t o r m w a t e r P r o g r a m S T O R M W A T E R M A N A G E M E N T P L A N FO R N C D O T P R O J E C T S Pr o j e c t T y p e : 15 9 0 M a i l S e r v i c e C e n t e r Ad d r e s s : Ge n e r a l P r o j e c t I n f o r m a t i o n B- 4 4 6 2 WB S E l e m e n t : Bridge Replacement WB S E l e m e n t : TG S E n g i n e e r s ( D a v i d B . P e t t y , P E ) NC D O T C o n t a c t : 91 9 - 7 0 7 - 6 7 3 9 Su i t e 2 0 0 Ra l e i g h , N C 2 7 6 0 3 Co n t r a c t o r / D e s i g n e r : 91 9 - 7 7 3 - 8 8 8 7 e x t . 1 0 4 sm o r g a n @ n c d o t . g o v Ad d r e s s : 3/20/2017 Ch e r o k e e Mu r p h y St e p h e n M o r g a n , P E Ra l e i g h , N C 2 7 6 9 9 - 1 5 9 0 Ri v e r B a s i n ( s ) : Ci t y / T o w n : 0. 4 Ty p i c a l C r o s s S e c t i o n D e s c r i p t i o n : Su r r o u n d i n g L a n d U s e : Ge n e r a l P r o j e c t N a r r a t i v e : (D e s c r i p t i o n o f M i n i m i z a t i o n o f W a t e r Qu a l i t y I m p a c t s ) No fo r e s t , c r o p l a n d a n d s o m e r u r a l r e s i d e n t i a l Pe r s i m m o n C r e e k ( L a k e C h e r o k e e ) 1-630.3 72 4 ' Pr o j e c t D e s c r i p t i o n Pr o p o s e d P r o j e c t Hi w a s s e e No n e Su p p l e m e n t a l C l a s s i f i c a t i o n : No n e We t l a n d s w i t h i n P r o j e c t L i m i t s ? Ha n d Existing Existing Pe r m a n e n t T e m p . E x c a v a t i o n M e c h a n i z e d C l e a r i n g P e r m a n e n t T e m p . C h a n n e l C h a n n e l N a t u r a l Si t e S t a t i o n S t r u c t u r e F i l l I n F i l l I n i n C l e a r i n g i n S W S W I m p a c t s I m p a c t s S t r e a m No . ( F r o m / T o ) S i z e / T y p e W e t l a n d s W e t l a n d s W e t l a n d s i n W e t l a n d s W e t l a n d s i m p a c t s i m p a c t s P e r m a n e n t T e m p . D e s i g n ( a c ) ( a c ) ( a c ) ( a c ) ( a c ) ( a c ) ( a c ) ( f t ) ( f t ) ( f t ) 1 1 3 + 0 8 t o 1 3 + 1 6 R T , S t r e a m b a n k S t a b i l i z a t i o n < 0 . 0 1 4 7 1 3 + 2 6 t o 1 3 + 4 0 R T , 1 3 + 5 5 t o 1 3 + 6 9 L T 1 1 3 + 1 3 R T T e m p o r a r y S h o r i n g 3 1 1 3 + 3 3 t o 1 3 + 3 8 R T , S t r e a m b a n k S t a b i l i z a t i o n < 0 . 0 1 2 0 1 3 + 6 1 t o 1 3 + 6 8 L T TO T A L S * : < 0 . 0 1 < 0 . 0 1 2 0 5 0 0 *R o u n d e d t o t a l s a r e s u m o f a c t u a l i m p a c t s NO T E S : Re v i s e d 2 0 1 3 1 0 2 4 SHEET 7 OF 7 Al l i m p a c t s a r e f o r P e r s i m m o n C r e e k . UT t o P e r s i m m o n C r e e k ( S A ) h a s n o i m p a c t s . W E T L A N D P E R M I T I M P A C T S U M M A R Y WE T L A N D I M P A C T S SURFACE WATER IMPACTS CHEROKEE PROJECT: 38376.1.2 (B-4462) NC DEPARTMENT OF TRANSPORTATION DIVISION OF HIGHWAYS 3/20/2017