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HomeMy WebLinkAbout20171283 Ver 2_B-4823 Final Permit Drawings_20180509� �j����� ���, Norch Carolina Department of Transportation Sti)1't73tiVrdtPF Highway Stormwater Program �� STORMWATER MANAGEMENT PLAN �'-�---• (Version 2.02; Released April 2015) FOR NCDOT PROJECTS WBS Element: 38593.1.2 TIP No.: B-4823 County�ies): Transylvania Page 1 of 2 General Project Information WBS Element: 38593.1.2 TIP Number: B-4823 Project T pe: Brid e Replacement Date: 9/19/2017 NCDOT Contact: Andrew H. McDaniel, PE Contractor I Desi ner: Joshua G. Dalton, PE, CPESC Address: NCDOT Hydraulics Unit Address: Sungate Design Group, PA 1590 MSC, Raleigh, NC 27699 915 Jones Franklin Rd. 1020 Birch Rid e Rd, Ralei h, NC 27610 Ralei h, NC 27606 Phone: 919 707-6737 Phone: 919 859-2243 Email: ahmcdaniel ncdot. ov Email: 'dalton sun atedesi n.com Cit ITown: Brevard Count ies : Trans Ivania River Basin s: French Broad CAMA Count ? No Wetlands within Project Limits? No Pro'ect Description Pro'ect Len th lin. miles or feet : 0.13 Surroundin Land Use: Rural, Residential Proposed Pro'ect Existin Site Pro'ect Built-Upon Area ac. 0.3 ac. 0.2 ac. Typical Cross Section Description: Two 10 ft. wide paved travel lanes with 3 ft wide unpaved shoulders (7 ft. with guard rail) Two 9 ft. paved travel lanes with vaiable width unpaved shoulders and fill slopes. and 2:1 to 4:1 fill slopes. Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: 700 Year: 2040 Existin : 617 Year: 2017 General Project Narrative: B-4823 consists roadway and shoulder improvements along with the replacement of an existing, single span, 24' long bridge with a 3@ 11' x 6' concrete box culvert. An existing (Description of Minimization of Water ditches at the beginning of the project (SW quadrants) will be relocated to accommodate the new roadway alignment. Temporary matting will be used until permanent vegetation Quality Impacts) is established in the ditch. Coir fiber matting will be utilized to protect the ditch along the NE quadrant of the project from Mill Cove Road to the end of the project. The proposed culvert will be buried a minimum of 1.0 ft. and have one low flow barrel and two high flow barrels. This confguration will closely mimic the existing stream characteristics. The high flow barrels will have floodplain benches at the inlet and outlet ends, which will be covered with coir fiber matting, and side slopes lined with class'I' rip-rap for bank stabilization. All ditch outlets will have class 'I' rip-rap at embankments. Impervious dikes will be constructed to dewater the work area. A temporary stilling basin will be utilized during dewatering. Standard erosion and sediment control practices will be followed during construction and unitl the site is stabilized. Waterbody Information Surface Water Body (1): Hogsed Creek NCDWR Stream Index No.: 6-26 NCDWR Surface Water Classification for Water Body Primary Classification: Class C Supplemental Classification: Trout Waters (Tr) Other Stream Classification: Impairments: None Aquatic T&E Species? No Comments: NRTR Stream ID: N/A Buffer Rules in Effect: N/A Project Includes Bridge Spanning Water Body? No Deck Drains Discharge Over Buffer? N/A Dissipator Pads Provided in Buffer? N/A Deck Drains Discharge Over Water Body? N/A (If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the (If yes, provide justifcation in the General Project Narrative) General Project Narrative) I II�;B11vs�y North Carolina Department of Transportation S�uun���t�r ,.. , Highway Stormwater Program �'. STORMWATER MANAGEMENT PLAN �"��`�>"` (Version 2.02; Released April 2015) FOR NCDOT PROJECTS WBS Element: 38593.1.2 TIP No.: B-4823 County(ies): Transylvania Page 2 of 2 Bridge to Culvert Avoidance and Minimization Proposed Structure Summa Sheet No. & Station Sheet No.: 4 Station: 17+23 -L- Number of Culverts: 3 Drainage Area (ac or sq mi): 3.4 S. Miles Culvert Width/Diameter (ft): 11 Surface Water Body: 1 Ho sed Creek Culvert Hei ht ft: 6 Culvert T e: Reinforced Concrete Box Culvert Culvert Len th ft 42 Avoidance and Minimization Efforts: Proposed culvert is consistent with existing stream slope. Proposed low flow dimensions through the culvert are consistent with the existing low (Bridge to Culvert) flow channel dimensions in the stream. Prop. low flow velocities through the culvert are consistent with the existing low flow velocities in the stream. Prop. culvert is buried a minimum of 1.0 ft. to retain bed material. Proposed culvert length has been minimized by using minimum fill and 2:1 side slopes. Stream Slope Fish and/or Aquatic Life Passage Existing Average Stream Slope (°/a): 1.25 % Existing Low Flow Channel Dimensions Avg. upstream width = 13 ft. Proposed Culvert Slope (%): 1.25 % in the Stream: Avg. downstream width = 11 ft. Culvert Burial Proposed Culvert Burial Depth (ft): 1 Existing Streambed Material: Sand, silt, cobbles, and boulders. Proposed Low Flow Dimensions Single low flow barrel = 11 ft. Through the Culvert: Proposed Sills/Baffles: 1.0 ft tall sills proposed at entrance and exit of low flow barrel. 2.0 ft tall sills proposed and entrance and Existing Low Flow Velocities in the exit of high flow barrels. No baffles are proposed. Stream (ft/s): V(2yr) = 4.8 fps ropose ow ow e oci ies roug the Culvert (fUs�: V(2yr) = 4.8 fps Alternating Low Flow Sills/Baffles: 1.0 ft tall low flow sills proposed at entrance and exit of low flow barrel to retain bed material and maintain natural stream charateristics. Culvert/Stream Alignment Stream Patterns Upstream and Downstream None observed. of the Culvert that Could Affect Fish Passage and Bank Stability: Bed Forms Impacted by Culvert (riffles, No impacts to bed forms anticipated from the installation of the proposed culvert. pools, glides, etc.): Low Flow Floodplain Bench Required? Yes Floodplain benchs are specified for two of the three proposed culvert barrels. Specifying one barrel as a low flow barrel most (provide justification) closely mimics the existing channel dimensions. Sharp Bends at InIeUOutlet? No The proposed culvert alignment matches the existing channel alignment at the crossing. (describe culvert alignment with stream) Stream Realignment Necessary? (provide No justification) Bank Stabilization: Class 'I' rip-rap bank stabilization is proposed for a distance of approximately 40 ft. both up and down stream of the culvert. Outlet Velocities Natural Stream Channel 2-yr Velocity (fUs): 4.8 Natural Stream Channel 10-yr Velocity (ft/s): 5.6 Proposed Culvert 2-yr Outlet Velocity (ft/s): 4.8 Proposed Culvert 10-yr Outlet Velocity (ft/s): 5.6 Roadway Geometric Considerations Evaluate/Describe Roadway Geometric Constraints: There are no roadway geometric constraints that prevent ideal culvert design and installation. N 00 � ( � ���� Sh�rt /A Fo� l ndrx of '= h��et,s S�r � hert 9 B For i' ��nvFntl ,nal ' vmt;o; s h � ti � � � • � � V � � O V CLEARING ON THIS PROJECT SHALL BE PERFORMED TO LIMITS ESTABLISHED BY METHOD II. THIS PROJECT IS NOT WITHIN ANY MUNICIPAL BOUNDARIES. ��'���1� ��IF�' ������ ���'`� I ' (�l�l��`� �� �������� �� ������� �I�� TRAI�SYL T�A1�llA CD U1�lTY LOCATI011t: BRIDGE 1V0.12 OVER HOGSED CREEK ON SR I538 (BECKY MOUNTAI11l ROAD) TYPE OF WORK: GRADI11lG, PAVI11lG, DRAl11lAGE A1VD CULVERT WETLAND AND SURFACE WATER IMPACTS PERMIT BEGIlY TIP PROJECT B1{823 —L— Sta. l3 + 50.00 NC GRID � ��� 0 NAD 83/NSRS 2007��� ° � �' � � —� i?/"� � � �� -'_ � / i� 1 '- -'--� '���/ __- _-_ ��� / _ '---. '—" � � U � '7T S 176 _ -,�� .�� >> ,i �� ��� __ '�_ -,�- 5w°�'/ / � ` `\`', ��, �`o� // U 216 ,J//j %'� s' / T� VA� B� / ; � � ��� _� - SR 1538 f � � A'p• MOUNTAIN ROAD _ — -- ------ "' %% �, � ��,y � � ..L � , BECKY _ _� �— � ' ��� �� �� 3o�a �_,` �! > � �\�_��� i�'� /// �\�G�2 � A i � _ - - -�' �� A, �V A�O , � ` ��� /� �—���� �� ��� 0 � ��� �� � � �� ������ ��� � � � � � \. \ \\ i� �� �� � i iI \� f ;\ \ � � � � � ��' ���� END TIP PROJECT B-4823 � � \ � � � —L— Sta. 20+10.00 �I ' \ END CULVE,'RT -L- Sta. 17+40 +/- PERMIT DRAWING SHEET 1 OF 7 ]P�k1E1Ld1�1[dNa���' 1P]Lr�I�'� DO NOT l*SE FOR CONSTRUCTION INC��IP1L�'I'1C i�1L,�N� DO NOT U56 FOR R/W .�CQ[�ItiiTiON &NC��]P1LE°ll']E 1�1L.4�N� DO NOT USE FOR R/W ACOUISITION DOCUMENT NOT CONSIOERED FINAL UNLE55 ALL SIGNATURES COMPLETED PL.1NS PREPARED BY; PLANS PREPARED rox: HyDRAULICS ENGINEER GRAPHIC SCALES DESIGN DATA PROJECT LENGTH � ENGWEERING 0 D7VISION OF HIGHWAYS ADT 2017 = 617 �� cn�ia �rv im u�ii�ir.n ���rciT 50 25 0 50 100 i i i i. i_r.�s. i i�� i.,wn as taoo a;.��� tt�dse ��. Rale�qh, NC 27610 / �� ����� ; ADT 204� = 700 �u��.i�i�,i_;�-�iw�� :C� / �;\ K= 11 % LENGTH ROADWAY TIP PROJECT B-4823 = 0.119 mi. zotz sraxnnno srEcrFrcAzioNs �a�° � ������`, PLANS D= 65 % LENGTH $TRUCTURE TIP PROJECT B-4823 = 0.006 mi. ec. � J � SIGhfITURE: n �_ 50 25 0 50 100 T= 3 %* TOTAL LENGTH TIP PROJECT B-4823 = 0.125 mi. RIGHT OF WAY DATE: BRIAN A. WILES, PE � g rno�cr sxcrNEEx ROADWAY DESIGN �ti-" �� " ��� V= 45 MPH JULY 15, 2016 �'�� `� PROFILE HORIZONTAL � o o ENGINEER ��� ���/ ( , UNC CLASS UAL 2/o LETTING DATE: BRENDA MOORE, PE \� (J� "�� 1� 10 20 LOCAL FEBRUARY 20, 201$ xcnor coxz�cr PROFILE (VERTICAL) SUB—REGIONAL TIER PE S7GNATURE: Z O � � � �3 ,�f /� tio,, "' , hih�°CK�-� �s - � �.e� - - �'< � �M � y�Cr� 1 \l i R.��".� �f C(£ .:. r ..�. M4e ^ OqTRCNT J/j \ DETAIL 7 SPECIAL LATERP.L 2' BASE DITCH i Noi m s�oiel —F'rll i.��„nn Ip j' n L _ _H� Min.D=1.0 F. 8=7.0 F�. FROM STA. 14+00 TO STA.17+10 -L- LT DETAIL 2 RIP RAP AT EMBANKMENT � N i io s�aiel D�cl ��1.Omi�1.5 Grode FLOODPIAIN � 9ENCH GEOTE%TILE —" ---- �i<ollne�-Clnss'I'Rip-Rap NWSJ FROM $TA.16+93 TO $TA. 17+03 -L- LT FROM STA.17�I�00 TO STA.17i�10 -L- RT FROM STA. 17 F 46 TO STA. 17 -�� 56 -L- RT DETAIL 3 TOE PROTECTION (N i�o scn�el `F\�< es _ ,`�F``S�o vr.�l — � GrcunA ��� !� —COiR FIBEft d = I.0 F�. MATTING I TYne of L'iner=Coir Fiber FROM STA. 18+10 TO STA. 20+00 -L- Rf � � DENOTES IMPACTS IN /� �� �jj SURFACE WATER ���� j� �' DENOTES TEMPORARY IMPACTS IN SURFACE WATER v '�; � �� _� -� '=� �v�, ; <rc_ � ' � _ _�� INLET 8. OUTLET CHANNEL DETAIL NOT TO $CALE FLOOOPLAIN BENCH. EST ESCAV.-135 CY esr nu=o cr ei000ruin NG EST COIR FIBER-lA0 SY , _ � 'THE FLOO�PLAIN OENCH SHALL BE CWVERED WIiH COIRFIDER MATTIMG AND iHE PERIMEIER LINEp ITH Cl I' RIPJWP I FIIL MHiERIHL IS NEEDED FOR iHE BfNCH, USE CL 'I' �II'-P\P P.ND PL:.CF Np11VF. MA�ERIAL ON TOP TO FILL VOID. O EAST MECKLENBURG CORPORATION -----IUE-- I � I CL 'I' RIP-RAP I I ATEM9ANKMENT I / EST.51 TONSJ EST 78 SY GFD SEE DETAIL 2 I FLOODPL4IN J BENCH CL 'i' RIP�tAP AT EMBANKMENT CIJL"iVFliED �F,-� / � � � i s � � Fc� I �� � ��/ ,. �5 '�„ ^�- _ i 5 �� 1 =4Y % � I� n N 88'31'I?" E FII' ?�.J2 _ � ' I _ .C`a8'-0E"W NAD 83iNSRS 2007 � � 1 JAMES M. & EDGAR M. ALLISON ��a - .� S � r: �,� , ``�'� , �,,�.r�' ,,,.' ��i�`' S��r' � � � � -' ''' .,Y�� 15 � "i =, �-:-��� r � C ENGINEERING � i220 GLEN ROYAL RD. RALEIGH. NC 27617 'fELE 919.786.0224 FAX 919.7b8.0232 NC LICENSL #R0189 50' 25' 0 50' 700' � SCALE: 1"=100' PROJECT REFERENCE NO. SHEET NO. F —4,`; =' ' -1 RM/ SHEEf NO. ROADWAY DESIGN HYDRAULICS ENGINEER ENGINEER Il�F$�I.d1�bN.� �" PII,.�N� DO NOT USE FOR COnSTRUCi'IOf� DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED PERMIT DRAWING SHEET 2 OF 7 + r; S. � � �._� ��__ �_ , ,S/ �� � t ��� ���� `�� r. _ ,r � _ _ � � `��� _ ' `�� � ` ���_ _ � � �� r �� �5 � �� �� ) ,s � � � �� �u��, � z i ��-� �� j� V � � .-' `^r �arR iu�� enPTis �EM � `'� ri� � �� � � � V / � _ ��:, � � \'�:? \\ \� uq � _ '� O� �C J�p�e.`,� / �/ � sor� / � � � � � '�' � � j �" �' � � \ �" I J \ � \ / \ 1 �S � / \ O� \ � ,.t.� �.-�'j �� � � � � � � - J / /'!i� � O =' CARRS HILL BAPTIST CHURCH 9_\ CARRS HILL BAPTIST CHURCH IF(�{t _L_ l'lt(,�l-��E,_`�C �l���T �� C ENGINEERING PROJECT REFERENCE NO SHEET NO. F-4,`;�='_: -1 _ RM/ SHEEf NO ROADWAY DESIGN HYDRAULICS NAD H� S S 200% j77� (�LEN ROYAL iiD. RALEIGH, NC Z�C1I % ENGINEER ENGINEER 'fELE919.786.0224 FAX 919.7b8.0232 ��gg�p��jy,� �j" pp�.:�iy� . _ . NC LICENSL #P-0189 0o NOT ose roa consTai�cr�os� JAMES M. & EDGAR M. ALLISON 50' 25' 0 50' 700' � �,�� � � p cu�p��orEo " � �5 $CALE: 1"=100' � , DENOTES IMPACTS IN ' � ,,_ ,�/ �,,,�-' j ��� �� SURFACE WATER /._� � F��,_r��� DOCUMENTNOTCONSIDEREDFINAL UNLESS ALL SIGNATURES COMPLETED � �� ,� DENOTES TEMPORARY ' � _ ,�%����•�r.� ;; `\\ `� .�/ � J' � � IMPACTS IN SURFACE WATER - ��� � � - � � ' ,,��' _ PERMIT DRAWING z �, i��_` � � � � � , , - � ��'� ���= ��_ - SHEET 3 OF 7 �'�� � � ' �� � � � - � � / a�" �'� -ti �� � � -,�� � —7 i i -�,� '' ��✓,� - - i � � �� -o � � � . � i i � �:,.`'� ,� '� � / `�� � _ � � �, .,t; � i �' G ,f ,,,' ;, �� s'� � � � �e,,z � ��� � , �R { ��� ,�� � i � � � � ; A o � � � - _��' -/ - � � ," � / u'�f -� �-. � � . � . . . � e,�_ , ��� i -- 'A � � T ca i f � _ . �'\ � \ \\ � \ \ \ ��:��\ � �c s. 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DIEROLF - - `��� , �I I� _ ` _ _ � �'' , r � �� �� s����� �I � I DIKE iY' � I � ��;,�n � i a. -'�� F�m I ��J 1 � �`� � ,� i IMPFRVIOUS l / I h ; , � � ' ��_�-� � L..r. - . - _ . � ; �� ' - - v . - :y _ - r� -�� � � � ) i - �` � i - � �, . . . �, � a � � a i� air rsnr i , m� � ,�� � i �� � � �cr:'� �`� �� � t � � � ��-� s.;� �_ _ / i� p n- � � � Ti � I l n � ' / 1 , 1 1 ' % -- � � ✓ . s�o �� ��, H�� Min.D=1.0 h. � � . AT EMBANKMENT I / I �i '� 'Ufi i Jr_ . . -' �-.... .. . . 1 � Fsr. st roNs� i �yi � - � 11 � A �-. _ _ � �,-� � �y ' \ �� � � � ' f � �� � �,j�� ( � V. A ��, _ , n�R i s�-BnFn-r �nn - 1 _ � tV �' �� i ' ��1 B 7.0 Fi. I ESY. 78 ,SY GFD �J ` _ .�, _ - -. � . � � �SEE DETAIL 2 �i � Ili `��"_I- I] � I C � .. � \ \ � � ^ ^ . . �\ __ ~�,\ .r 'i� \� _ FU' �\�� �.\ _ . .x FROM STA. 14+00 TO STA.17+10 L- LT I O ' FIQODPLAIN �� � �\ � � - T I I �.' ,,, � � ` �\ `' i < � / � //./'.\�% 4 S\yJ �� /,' • �� �\ �r f _ � �� _. �ENBURG CORPORATIbN `��. I � , � } � �� \ F � O -0 �� � BENICH I � -I /' SOIL /� I \ � �:,� O "C y ���Y / � 4 �� � � AT EMBANKMENT � �i �� �. It� I .�� �� .. � \ ��`� I.. ['.,S' \/ � / r�>� . . i h �' ,5 \ I f �~ � _` . RIP RAPDATE 56 ANKMENT ' EAST MECKL �- � EST.65 5Y GFD . . �' „�`;� J 1..- i .P . ��, � � � � _ � , esr. ai roNs F �� I i� � {- 1��� ���� , � � - C� � i SEE DETAII 2 t � i � \ . ,� � \ .' m m �,._ - . � r-� T F � ` ; r. � ' �_ '� � '� \ l; . .,� . r � <'� � � � � �- _� - � o, d " i o m �. -i s� . . ��' � - J '� � � .,< / j . k �j �I ,i � �..�/�, 7 � C �' � �,�. y � . � - _ �.,' .'- - u,oda � ; r�000Pinw l � � I �t � � f �, � ' �,",% __ - _. . u' � 9ENCH r . .. � 'r' r � � GEOTE%TILE=, _ - � � J .�� ✓%�aa/� � }�I 1� j'. , �'�'; .I�ri �i I . \ \�t 14 . . INLET 8. OUTLET CHANNEL DETAIL " �� j5 ��-�J � � 1Iy1 k� � � � � ' I � �''� � � � >i-ollne�-Clnss'I'Rip-Rap NWS�' NOT705CALE �'\L� � �,..!�� II,� ��/lrY , ��S ��' — h�� '_ ' w � FLOOOPLAIN BENCH N 88 3"I?" E O � � FROM $TA.16+93 TO $TA. 17+03 -L- LT � � Fli' 3 FROM STA. 17 �I�00 TO STA. 17 i� 10 -L- RT Esi exCaV -tas cv � � ��� �� ,`fi„ FROM STA.17+46 TO STA.17-��56 -L- RT Esr nu o cr Fi000ruirv NG EST COIR FIBER-lA0 SY I , � � HENCH DETAIL 3 N� ,� �:fl_j- W CARRS HILL BAPTIST CHURCH TOE PROTS CTION GEOTE�crIIE `' I � � ti (Noi a cnlel � ITYP.) � I� —ONISiRE MP .>�,� .4�0 e enr+Ks �rvr.� � CARRS HILL BAPTIST CHURCH ».';�"' _ 1� °Jg�op - �" ' vrnl —� - F CL I RIP RAP ' I � — G�cund 1r 11 r �II ~�' ��� �I I1 1 /� -. —COiR FIBEft MATfING /1 — d I_0 F�_ 'THE FLOO�PLAIN OENCH SHALL BE CWVERED WIiH COIRFIDER 9 F�.� I � —L FJF�C FI LEy �' EE J HEET � � MATTI� G AND iHE PERIMEIER IJNEp ITH CL ' RI��tFP FILL �. 9_ �" �� '» — MH ERHL IS NEEDED FOR iHE BfNCH, USE CL'I' �II'-RAP P.ND "\ ' I TY�e of L'ner-Coir Fiber PL:,CF Npl VF MA�ERIAL ON TOP TO FILL VOID. b� ; FROM STA. 18+10 TO STA. 20+00 -L- Rf . � ENGINEERING PROJECT REFERENCE NO. SHEET NO. �.i -f;5._'_j _ ROADWAV OESIGN HYDRAULICS ENGINEER ENGINEER � � � � � i220 GLEN ROYAL RD. RAL6TCH, NC 27617 �ll$IE�,IN[i 1[N 1E6�' 1T�,LfilN� TELE 919.788.0?24 FAX 919.788.0232 0o Nor ose r rs coNsr�iucT�oH NC LICEN�E �P-0139 � � � � DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED PERMIT DRAWING _ _ _ _- . _ - - SHEET 5 OF 7 � � � � � _ _ BM I ELEV = 2.I40.75' BM 2 ELEV = 2J24J5' BM 3 ELEV = 2,I25.03' N 549.600 E 890.345 N 550,284 E 890.546 N 550.870 E 890.932 -L- STA //+/7 66' RIGHT -L- STA 18+16 54' RIGHT -L- STA 24+04 27' RIGHT 8/NCH SPIKE SET lN TOP 8 INCH SPIKE SET lN THE BASE CHISELED "X" lN THE NORTNERN OF A ld"NOLLY STUMP OF A 90 INCH WHITE OAK TREE END OF CONC.HEADWALL � � CULVERT NYDRAULIC DATA DESIGN DISCHARGE _ 1000 Ci S DESIGN FREQUENCY = 25 YRS DESIGN HW ELEVATION = 2/13.8 FT BASE DISCHARGE = I400 CFS BASE FREOUENCY = l00 YRS BASE HW ELEVATION = 2115.9 FT OVERTOPPING DISCHARGE = I400 CFS OVF_RTOPPING FREQUENCY= l00 YRS OVERlOPPING ELEVATION = 2/159 FT Sta.15+93 -L- Pl = l7 25. -L- ISTA. 0+1Q.00 I BE� N GRADE V= 00' -L- STA,l3+5 .00 , K = l5 EL 2.// .85' - PRO OSE GR E �L ISTI G G OUN e isnNc �}— � � I� � BRIDGE � - - I RE OVED \ -- -- - (-J y� ( ) .4 �• f-L0000. _ — ' — _ 3.s,�� 6 RC�C ¢ U �. WSEL ON 3- 1-2015 � �y� 'x =NW =2109 WQ � .� �t * � O Wmti_i �W ¢r� �» N� LEFT DITCH ��� t`t�`� ��,�/-� -�- F'! �N� � EE `�Hc E l -r ��,- - ��. , �H,. Y�.� ��„ �,-�- ��� 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ��- PROJECT REFERENCE NO. SHEET NO. DETAIL �-�;�_� �7 (NOT TO SCALE) ROADWAV OESIGN HYDRAULICS MU LTI- BARRE L C U LVE RT ENGINEER ENGINEER LOW FLOW CHANNEL,SILLS p��`�r'��''�'� �� '�°-:'N� OO NOT USG POR �/ W ACpUI�ITION AND FLOOD PLAIN BENCH "`NOTES: 1) NATIVE MATERIAL BETWEEN SILLS IN THE CULVERT SHALL PROVIDE A CONTINUOU$ LOW FLOW CHANNEL. NATIVE DOCUMENT NOT CONSIDERED FINAL MATERIAL CONSIST$ OF MATERIAL THAT IS UNLESS ALL SIGNATURES COMPLETED EXCAVATED FROM THE THE STREAM OR FLOODPLAIN AT THE PROJECT SITE DURING PERMIT DRAWING CONSTRUCTION. ONLY MATERIAL THAT IS EXCAVATED FROM THE STREAM BED MAY � S H E ET 6 O F 7 �7 BE USED TO LINE THE LOW FLOW GULVERT ����� � I I BARREL. RIP-RAP MAY BE USED TO SUPPLEMENT THE NATIVE BED MATERIAL IN THE HIGH � FLOW CULVERT BARREL(S). IF RIP-RAP IS I USED TO LINE THE HIGH FLOW CULVERT BARREL(S), NATIVE MATERIAL SHOULD BE PLACED ON TOP TO FILL VOIDS AND PROVIDE A FLAT SURFACE FOR ANIMAL PASSAGE. NATIVE MATERIAL IS SUBJEGT TO APPROVAL BY HIGH HIGH THE ENGINEER AND MAY BE SUBJECT TO � SILL SILL � 6' PERMIT CONDITIONS. � � , �I 2) SILLS ARE TO BE 1.0 FT. WIDE, CAST � I 1 I SEPARATELY AND ATTACHED BY DOWELS. 3) DO NOT SET ELEVATION Of HIGH SILLS 2 2 I, ABOVE BANK FULL. � SILLS AT INLET AND OUTLET - �- 2' INSET (TYP.) FLOODPLAW � . te- -- FLOODPLAIN ; BENCH -�� / 2' SILL 2' SILL BENCH '; � ♦ � �e � ���o°` c�;. � ir���i�`�� � c, � o=� BACK FILL WITH NATIVE MATERIAL TO Y, � �re� �< �� � SILL HEIGHT � �.-> > �� S0 ^°'�' ��c'k�+�,�1 } � .:{S y,�� sr;��c�n t,_ � �^; 1'SILL 1'SILL _--_-- B �`� � � � � �, BACK FILL WITH NATIVE MATERIAL TO :� a �� "� � ii �����,r�g� SILL HEIGHT - u� `��� .� � , ra �� � � �k ,. �- ��---u-�= �� � — 2' SILL 2' SILL — � � te � � Te -_ � FLOODPLAW - 2' INSET (TYP.) � FLOODPLAIN — BENCH p�,qN VIEW BENCH 973 1 0 0 50 1 0 EXIS ING B IDGE / TO BE RE OVED . � �'�� _-� � BEVEL D HW TB RT � � ��� �� � TB L � - - - - - - � i����� � WLET & OUTLET CHANNEL DETAIL - " � NOT TO SCALE � � - � , FLOODPLAIN BENCH �\ � � _ _ � � _ - - - - - - - - _ _ _ _ _ _ - - EST EXCAV.-735 GY � -- — —� - EST FILL=O CY — � FLOODPLAIN �dG � EST COIR FIBER=140 SY � gENCH �' _ _ _ _ - - — — � N �' — -- ----- -- � � � � � � � �� — — — — „ a� t; . � '� - - _ — - �— — — — — � �; GEOTEXTILE _��.y i N,� . — — (TYP.� I S Cl 'I' RIP-RAP - - --- -- — - - - — / �� �� � ON $TREAM --- — — _ — _ — — . �.. BANKS (TYP.) � � - � � � CL 'I' RIP-RAP - \ � S REAM BED ��� � � � � „- „� w oN � � ��' ` "� � WAT R SURF CE �� 3- 1-2015 'L 'THE FLOODPLAIN BENCH SHAIL BE COVERED WITH COIR FIBER — 25 12.5 0 �,5 50 ��„ MATTING AND THE PERIMETER LINED WITH CL'I'RIP-RAP.IF FILL CL INV=2�O%. � = NWS - ��^H" MATERIAL I$ NEEDED POR THE BENCH, USE CL 'I' RIP-RAP AND SLOP =1.25� '"'�" PLACE NATNE MATERIAL ON TOP TO FILL VOIDS. _ �O%.3 LANS w�r ti.�- +fiN+i+� (�r�� '+r WETLAND PERMIT IMPACT SUMMARY WETLANDIMPACTS SURFACE WATERIMPACTS Hand Existing Existing Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural Site Station Structure Fillln Fillln in Clearing in SW SW Impacts Impacts Stream No. (From/To) Size / Type Wetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Design (ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (ft) (ft) 1 17+15/17+40 -L- 3@ 11' x 6' RCBC 0.02 42 STREAM STABILIZATION 0.02 65 IMPERVIOUS DIKE 0.02 58 TOTALS': 0.04 0.02 107 58 0 *Rounded totals are sum of actual impacts NOTES: fL'Y:I