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HomeMy WebLinkAbout20171063 Ver 1_Build Maps_20170825Hi�i3w��y North Carolina Department of Transportation ��. St�rin�va��r i ,,. .,.,,, Highway Stormwater Program =,� STORMWATER MANAGEMENT PLAN -- (Version 2.07; Released October 2016) FOR NCDOT PROJECTS WBS Element: 38618.1.1 TIP No.: B-4848 County ies : Yancey Page 1 of 1 General Project Information WBS Element: 38618.1.1 TIP Number: B-4848 Project Type: Bridge Replacement Date: 2/28/2017 NCDOT Contact: Bill Zerman, PE Contractor / Designer: Trent Cormier, PE Address: NCDOT Hydraulics Unit Address: ICA Engineering, Inc. 1590 Mail Services Unit 5121 Kingdom Way, Suite 100 Raleigh, NC 27560 Raleigh, NC 27607 Phone: 919 707-6755 Phone: 919 900-1608 Email: bzerman ncdot.gov Email: trenton.cormier hdrinc.com City/Town: Cane River Count ies : Yance River Basin(s): French Broad CAMA County? No Wetlands within Project Limits? No Pro'ect Description Project Length (lin. miles or feet): 0.17 Surrounding Land Use: Low Residential, Wooded, Agricultural, Low Commercial Proposed Project Existin Site Project Built-Upon Area ac. 0.7 ac. 0.6 ac. Typical Cross Section Description: Possum Trot Road (SR 1128): 2 paved lanes (total 20' wide), 3' shoulder (2' paved) on Possum Trot Road (SR 1128): 2 paved lanes (total 22' wide), open shoulder section. each side (7' with guardrail). Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: 1600 Year: 2040 Existin : 1230 Year: 2015 General Project Narrative: The North Carolina Department of Transportation (NCDOT) has proposed to replace Yancey County Bridge #003 on Possum Trot Road (SR 1128) over Possumtrot Creek. The (Description of Minimization of Water existing structure is a one span bridge (1 @26'8") and is a timber floor on I-Beams supported by Yount Masonry abutments. The proposed structure is a two barrel (2@13' X 5'), Quality Impacts) reinforced concrete box culvert (RCBC). This structure has been designed to have as little environmental and surface water impacts as possible. A floodplain bench will be cut into the existing ground at the inlet and outlet of the right barrel to allow for additional water conveyance during high flow events. Channel improvements were made for the proposed RCBC design. Excavation was kept to a minimum to produce as little impact as possible. Where excavation is necessary, geotextile and rip-rap were utilized for bank stabilization in an attempt to reduce stream bank erosion. A low flow barrel on the west side of the culvert was designed to match the stream width to maintain the normal flow width, depth and velocity of the stream. This will maintain sediment transport to provide a stable stream during bankfull discharge. The barrel invert will be a minimum of 1' below the stream bed to consider fish passage. A high flow barrel on the east side of the culvert will provide flood conveyance during high flow storm events. This will reduce shear stress on the stream bottom. A grassed swale is being utilized for treatment before sheet flowing through a wooded area into Bald Creek. Due to the nature of low impact bridge replacement, the increases in stormwater discharges (post vs pre condition) are insignificant. Therefore, additional stormwater measures are not required. Waterbod Information Surface Water Body (1): Possumtrot Creek NCDWR Stream Index No.: 7-3-22-7 NCDWR Surface Water Classification for Water Body Primary Classification: Class C Supplemental Classification: Trout Waters Tr Other Stream Classification: None Impairments: None Aquatic T&E Species? No Comments: NRTR Stream ID: 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 Dischar e 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 justification in the General Project Narrative) General Project Narrative) P.oitlance and Minim�zation EHaris: �Britlge lo Culvert� Stream Pactams Ilpstream and oo.�so-eam o� me emven �ea� eo��m Nfecl FisM1 Passaoe antl Bank Stabilit� Narth Caroline Depertment ol Transparta[lon HlgM1way Stennwa�er Progam STORMWATER MANAGEMENT PLPN �heloasiamounloldlsWNanrefo p iclife. ethxaulvert g p.anenl�Ireamimpacis_Insireemworkwasm�nimizstlto nc Ilie exi I af ���e aulve��iM1e low (luw t.01orn viu/ba��ey al t6 9 cenleiv iu otlihr.o Iw�t�in�neoulvon.Flllslllswlll�e uoletl po�Ner��ioul�at lo IM10 IM1e .:ulvurl vralL ivazmaa: esmsnne u��xam�r,Mna-n,e �na+mma: s.00w�s..eam�ma�o�e��e��ew�rneame�eaxa,�oraao�i p �_a�s�mnme,eax�sweu Prea��as�me�an,f�en„s e.a�n�w eriflloirun/V�o��Yl�ae sepuenco will bm �in�erup0�etl. bui 6asotl on Nm aerliinei vansport ul �iu sVeam snouid be rees�abiis�etl wltM1out tlegredln vacF_ oYes AlowllowhencM1�isrequiretlforconveyanceollM1elDOyearslornevent,xatll��rnlproperlieswillnotbeativarse.lylmp�cledby TM1e cuNen �fi in allgnmant witM1 tM1q stream Slreemr g en.wesno.necasxsry on �s neetlea a.IM1e inlet antl the oullel o( �ha culvArt n slabilize.';ie - -ei$in�'ani i verycia�a�omeroaou�ay.sovurnanwvyaiionneni�a�on v3n n mrure .. �9��� v e..n.-, .. i�anin. nwM1�r,M1ma�esM1econs[ruclonofM1ebrtlyeRffrilain.ov��nn. � � � � � N V •� � V � � O V See Sheet 1A For Index of Sheets ;,� � j� � �� See Sheet 98 For Conventlona/ Symbo/s � !l ��� � � "�, (� ll ' �� i� I ' � �� (�a � � 11� (� _L, � �� s�� �e� ��� � � See Sheet iC-9 & 1C-2 For Survey Control Sheets ,�a B-4848 �I�������1� ��� �1��(�JI�����5 YA1�lCEY . CD U1�TY LOCATI011L• REPLACE BRIDGE 3 OVER POSSUM TROT CREEK ON SR 1128 TYPE OF WORK GRADI11tG, PAVING, DRAI11lAGE AND STRUCTURE WETLAND AND SURFACE WATER IMPACTS PERMIT BEGIN TIP PROJECT B-4848 —L— STA. 10 + 50.00 THIS IS NOT A CONTROL OF ACCESS PROJECT THIS PROJECT IS NOT WITHIN ANY MUNICIPAL BOUNDARY CLEARING ON THIS PROJECT SHALL BE PREFORMED TO THE LIMITS ESTABLISHED BY METHOD II . ereaw vaa.em 38618.1.1 38618.1.2 nnenw.ero. B RZ-112 S B RZ-112 8 f. � � PE END TIP PROJECT B-4848 —L— STA. 19+25.00 FIZELI�I�II�TARY �LA1V@ D�O NOT t�SE I'OR COI:9TRUCTION DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED GRAPHIC SCALES DESIGN DATA PROJECT LENGTH P�epared ln the Offlce of: �'DR.4ULICS ENGINEER ADT 2016 = 1244 DIVISIOIV OF HIGHWAYS 5� 2$ 0 $0 ��� ]000 Birch Ridge Dr., Ra[eigh NC, 27670 f���T ADT 2040 = 1600 ,��, ° � c,� K= 10 % zon_ srann� srEctFrcario.vs �� '9� PLANS � � D= 55 % LENGTH OF ROADWAY TIP NO. B-4848 = 0.158 MILE rx 0 a 50 25 0 50 l00 T= 10 %* LENGTH OF STRUCTURE TIP NO. B-4848 = 0.008 MILE RIGHT OF WAY DATE: KEVIN E. MOORE, pE srcuaTune: s 8 V— 25 MPH — JANUARY 26, 2017 PRo�ecr sNcmEsx ROADWAY DESIGN � TOTAL LENGTH OF TIP NO. B-4848 — 0.166 MILE ENGINEER ���. �< PROFILE (HORIZONTAL) . TTST 1% DUAL 9% °�°P �o� l0 5 0 l0 2o FUNC CLASS =LOCAL I.ETTING DATE: STEVEN D. KENDALL, PE e� T���$ SUBREGIONAL TIER JANUARY 16, 2018 PRo�Ecr DEs,cn- ExcrNEsn PROFILE (VERTICAL) PE SIGA�TURG: PROJECT REfERENCE NO. DETAIL A DETAIL B DETAIL C - WETLAND AND SURFACE WATER IMPACTS PERMIT SPECIALNTDITCH LATERAL'V GR455SWALE CUTDITCH a-4sa� � �o, o =�o�e, , �o. �o =�a�e, , �o„o =�o�e, - WW SHEET NO. o�n�n 1 o�n�n ROADWAY DESIGN Naturol � '7,'� �( Slope G.o�nd 3 0 oe WN No�urol � 3� �� Slopo � cro�na ?�lor 0 F�oe� ,� D,y.� . �,o"" 7:/ D F�de` O ENGINEER M�,,. o= ts w. N Min.O= 1 H. b= 5 F�. Miii. D= 1 Ft. � FROM -L- STA.73+25 TO STA.14+75 RT FROM -L- STA.14�90 TO STA.17+�75 LT FROM -DRV2- STA.10+75 TO STA.11�r06 RT FROM -L- STA.18-F50 TO STA.19+25 RT ''� , � FROM -DRV7- STA.11+00 TO STA.12-00 RT GRASS SWALE DATA __ ` �� Q � DA= 2.6 AC -..._. . _ ,. SLOPE 119"h� �....�_ � ? �5 L RE(2, = 260 N. Z ������-��,:� � . � � l PRO. 285 N. �-�-� '�� f� '� Q2_ 18 6 cfs � �.� . - , _ -- °L— PT Sla.15t7649 02 , 2' ". � _�_ ��S�j � Q70- 14.3 cfs __ --- ----� — � � � V70- 2.3 fps R^ - O _� L= _i — I / I D70- 1.42 k. w ----� _2�_ � / � -'L —i —� STA. 14+90 TO 17+75 LTL��6 J CONCFETE BRIDGE — -- — � -z — L —L'�'r�T��� ���—��= ------ — � -- ---- ------�_=_ ---- —• _____ -- —ro Maas ,vicc.Hc --- ---__ ' CONCRE7E BRIDGE —�— � � —��— _ �= � � �— ��' BST l9E �___ _— � —__� � ��—�� CL 13 21P RAP �� --- �.�� — � ES-. 5 TONS NC HO \.�IP-P,AP � � RP �c=—r= --� ���_—_—_ — TOB(/RNSUILLE,NC�_ � ¢ �p� — -- E5T In SY GEOTEXTILE �B�T Q / ��„_ i� R\P_Rj \" �'!\DNp� GP --__= _. � 9`� F OF OU,TC _ . . '"� ^ ANNEI IMIr VEMENT /�\ EST. 135 TONS .L II RIP RAP \ � ,FLST.210 SY GE TEXTRE 1�N� � \\iY` '." �..�� / � � a�s � ����� � � � , \� / � � �!~S��\ `"'� ,S. t��� �j � � , ,.',rs,� _ � —DRVI— PT ��tl� O _, —DRVI— PC�ko 10+48138 ,�oH a�,o e n ,,,, �.y �q � � \ 5 cu uN� N—DR�I— l'Ul S/O.76i�{�6 a a air �aa � / �ST.2 TONS � � �✓ � E�T.7 SY GE TEXII�E`� � � � r-f= —DRVI— PT 5 SPECIAL CU—f DITC� SEE DETAI� A O F116F H. h DAVm 800l� SITE 1 SEE ENLARGED AREA ON �SHEET 4 \ ��, � ��\ � � ' Y �\ \ . E \� � w �\\ F, � \\ \1. _ � // � / / ; �, � (`"'r / / . i � � t / / ,' / / � � / / . c " / / 3 � � //// ry / / � loo O r�/ Z) / WG 50 100 � �° GRAPHIC SCALEe I"= 100' HORIZo �E"'" o"`� B°°� ^Wa �Q� �Up i � U+TERAL V GRA55 SWALE 0\FLE \0�a ���� ��—� 9n51N CONSTRUCTED � SEE DETAIL 6 uNOEx a-na3eM� µ�P'RP�E -- � /m g D TENTIDN B RETAIN Ioo NOT oisruRa� pPPI� D�ANp�t Q�RE�t�ON2� ✓ . ��� _ �2 .... . . i �%t= X�v_ ., I� CL B RIP RAP � �,�`f �'�� � � � !� Y� �,'>��� �6 .;: �c � � � \�� 'y���i�i: ��// ��w��_ ,��`.��� � - . �j� i. ��/ � . � .,'L� "�� -� i �j� t��r,��f�� '���� ����� �. 1 � .y ii d�, t\ �� , '/ y�,, G!%�;r`��i'�� � �� �F • � � ��-. �� �e�. � . . � �;�_ %iE� �`� i�% '� ♦ � � . �� .' � � ��% ' `' ''-' � �`�v : ' 'i : �I,'!/�► � !% I I / • � �% F�Y'�� 1 �'/�/� �!' I�� IJ ' � / " -� ��� � ���; � �r�,r.�s� ► * >�-� � ,N� .�:��o F� � ..• . - P% S%O. �2 43 F,�pG P��"E /� � /yOp'/� .., f;h �� � / / . � t.r ,� / i � � REBAR V m � � \ � � / / .. . / / , � .,awo MEHS �� i i . �� a�'S� i i � as F �¢�r Er i � � CHA N LI RO�EM �/ / / � = S CL II R P RAP / j� � �y;.n;�., - _zoo sr �O.El2i45.� _ . �'� �'�`"f � i —ORVI— POT S7a. /2+6 � �' a �S "� 1;:r' �� Q� � L— PC S7a. 11+73.24�' � ��°I�� 3 -�= � � � � � 30'CON Q B� PMK & R/OE N�,..,,,.. SPECIAL CUT DITCH SEE DETAIL A CUT DITCH (TIE TO DI) SEE �EfAIL C POT SYa.10-f00.(A � ' LEGEND � ���� �� ��q \`/�`/ � MPA�CTSSINER URFACE WATER j � ne v v � lC���� � � M AaCTS51N SURFACE WATER �� SYO. "KJO.00 � NOTE: FOR CUT CONDITION, USE � CL455 II RIP RAP FLOODPLAIN BENCH `�,�, BORDER WITH NATURAL GROUNO C� L,� �2„-� I COVERED WITH COIR FIBER MAT � � INSIDE BORDER. IN FILL CONDITION, USE CL45S II RIP RAP FILL THROUGHOUT .71 �}.. wITH NATIVE BE� MATERIAL FILLING �4 1NE VOI�S ON TOP. DETAIL D STANDARD HEAD DITCH 1No+�o smlel Nal�rol � Naiurol Ground 3,� 3.\ Grovnd D M��. D- 1 Ff. FROM -L- STA.14+75 TO STA. 15+80 RT DDE = 20 CV,SLOPE=2.49% DETAIL E STANDARD TAIL DITCH � No� io Smie� Na��rol � Nmurol c.o��a 2.� p 2.. c.o��a Min. D= 1 Ft. FROM -L- STA.12+62 TO STA. 13+61 LT DDE = 20 CY, SLOPE-3.D9% FROM -L- STA.13-r70 TO STA.14+30 LT DDE - 340 CY.SLOPE�-3.76% COIR FIBER MATfING (TYP.� NG EXCAVATION E%CAVATIOI a� - 0 5' ��Mq� u / CLASS II RIP RAP (2' THICK� ��'... wiGEOTE%TILE T — — �P�� i' SILL / CULVERT BURIED 1' /� 13' 0'-20' � EST. DDE = 325 CV EST. 135 TONS CL II RIP RAP EST.210 SY GEOT[%TILE OUTLET CHANNEL (LOOKING DOWNSTREAM) (SCALE 1" =10') SHEEf NO. ENGINEER 1k�F.lE][,1[�ff][Nn ]Eg � 1P1LF�N� DO I:9T L*cE FO CONSTIiI�CTION DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED PERMIT DRAWING SHEET 2 OF b GLI� RETAIN �� �_ oRpN�GE — _ F� IIX �4n�� � � �x--x. � �-r��1h :� � ( ��' _/ _ Gl1T�[4.. O/1[]/ GO � � �,�"''_ y?� 1.5' SILLS LASS II RIP RAP w' �EOTE%TILE ON _OODFLAIN BENCH ORUER w.2�.1 SLOPE (TYPJ ,-,�,�',�;.'� PAVEMENT REMOVAL I FOR -L- PROFILE, SEE SHEET NO. 5 FOR -DRVt- VROfILE, SEE SHEET NO. 5 FOR -DRV2- PROFlLE, SEE SHEET NO. 5 POR STRUCTURE PLANS,SEE SHEET 5-? THRU 5-??I PROJECT REfERENCE NO. SHEEf NO. DETAIL A DETAIL B DETAIL C WETLAND AND SURFACE WATER IMPACTS PERMIT SPECIALNTDITCH LATERAL'V GR455SWALE CUTDITCH a-4sa� 4 � �o, �o =�o�e, , �o. �o =�a�e, , �o„o =�o�e, WW SHEET NO. on�n 1 o�n�n ROADWAY DESIGN HYDRAULICS Naturol � '7,'� �( Slope G.o�nd 3 0 oe WN No�urol � 3� �� Slopo � cro�na ?'/o P°e� '� D 3�� - �,o�� z./ F�de� O ENGINEER ENGINEER r o ;n��. o= ts rr. � (V Min.O= 1 H. b= 5 F�. Miii. D= 1 Ft. � FROM -L- STA.73+25 TO STA.14+75 RT FROM -L- STA.14�90 TO STA.17+�75 LT FROM -DRV2- STA.10+75 TO STA.11�r06 RT FROM -L- STA.18-F50 TO STA.19+25 RT ''� , � FROM -DRV7- STA.11+00 TO STA.12-00 RT GRASS SWALE DATA _ �� Q J�Tj��i ]�,][�,�][�in ]��' �][,��75 � . . - � - . DA= 2.6 AC ` �� . . s � � � . �- " '' - ' - . SLOPE 119"h� ' . . - � �` - DO I:9T L* E FO (`ONSTIiI�CTION - � ' � . � / " �X�X� __ � � 3I � 15�_ � . . l PRO 28 N � - . . � � _-. , < , r,' -��ryyy` ^ ! � . - � � - - _ .. . . - � � '_ - � � � W L7' (��\ . . . � . . - _ . � . . i _____ --_ - _ .. �,_ .. -� _ � . ._- -. . .. Q2_ '126ft _ ' _ , - -- , . 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II� r � / � � NOTE: FOR CUT CONDITION,�USE _ � � � ' FGLOODPL4INOBENCH � � � - � - - - - - - --. � _ - - _. \ .� ... � �- \ .. � _ _ \.\ c . � I' �" T . � �/ � � i � - �� r� , � .: GL455 II RIP RnP FLOODPLAIN BENCH _- BOROER Wr \ - � . ,�1 '� � � � /i I J' 73' I , - - � = _ _ _ ' � . � . . / _ L . 4 I I � I � I ' _ . _ _ � , _ _ z . _ �_ � __ _ -a.\� y � �..� 1 � �`\ , . � I . � ., � ' ,-:' ` . �/ � /� / / .�?� '����/� �% BORDER WITH NATURAL GROUNO 2:1 SLOPE (TVP.) : .�.� _ / � �.. �� -.� ; \ ` I ,. �'. _I' ^ I' _ _ / .� / � / _ _ _ \ / , � _ _ _ �" � k \� � - � \� \� . \� " � �� � 1 ,.�/,� / � , i � , � � � INLET CHANNEL - �. � ,C � �\ i�I I I COVERED WITH COIR FIBER MAT - - - ,. � --� . � �,� 2 � I�. / /� ,.,� / � � �i ��� WSIDEBORDER.M FILLCONDITION, � " "% _ --i � - � � �.��� � ��' i � � ��� � �';i'I �� � (LOOKING DOWNSTREAM) - '� / -\k � � - � � A �I � 1 �� � �" �� � � � � � � � i � i i - � . � USE CL45S II RIP RAP FILL THROUGHOUT - � E57. �DE =235 CY " "�r' - � � ` `t �';��� �I � ��\ I wITH NATIVE BE� MATERIAL FILLING rSCALE 1�� =�0� EST.130 TONS ll. IIRIP RAP � J' N� - � _ �_�� \ �dli I' � �� �� � . � � - - , \ ��� � � � �� i i '� 1NE VOI�S ON TOP. ` � EST.700 SY GEOTEXTILE _ � i� r, � _ " _ � ��� _ A �A 11I'�1 l� ��� lil�f�� �I � I il�Il � 1 i , i� z �` I � i �� ili,,i DETAIL D = i - �� r � - � = � -� � � � ��� I •' I I � '� �� � / � IP I �� ii= � � STANDARD HEAD DITCH _ - � _ �- �. _ �� � -_ \ II � . I i i / � � � il I i 1 No, ro sco�el � ' i �� ���'� i� i i '. � �� � - �i , � , i i � � 1 � �� � _ � � � i - _ �-. � _ _ _ - _ � �� � �i,����i'i��;r i: � ��� ��� i � r��i ���1 �� ',i; / J- 1 L, � � �, Ha�„�i � Nor��i ' _ _ _ J / \ I' II � � ' � � � i � �,_ <���.{� H / � / - � / x y i� � o��a 3.� ,y.� ��a„�a __ - - 7-1 ��',illli��li ��+J � l �x f��� , �� �iil �� � / / �' ��'' � _ � � � '�� � _ _ - ` 1 / � 1�� iil i��� i i I �� � ', �' �r � ', i i / /� l,;�l � � m��_ o i Fr. - - � _ - ,/ �� I����I1���P l i # !'� � � � ' � i rlG � l �_ � _, _ _ - _ _ > ��/ �� ��,� � �u�i�i ,ln l .. � � ��o� � � l � �� ,� i i� FRonn -i- srn.�a+�s To sra. ib+so 2r � � � I..� ( li, �/ l �� /"� DDE = 20 CV, SLOPE=2.49% � / ' / - '- �' -. - - -_- _ � / I��.�,r�'; / � � E l. l:� � ���. i � l �� l;�i,l il l�� �li ��,� / - - _ _ . �=-: . � I� 3- --� ---- - // � i � � il l l'� n � l ��l l p�f � � � DETAIL E � � / � � I II �i �I I / / �„ ( � I,.,��. I�) �' �/ 1 � �! �/� l � �;� STANDARD TAIL DITCH � y�. �� � I � ��I . / �, / / , � � � � a�, y�� ' / � i l�. � � l, /' I No� �o s�aiel � �Q� � �� �,�,� I °"�/ / / / �� ��_' � l / l� 6 / I 1 �� III� � ��� ��i � l I I � �I li � !,` / / / f J / � o � �� �.L �� I I � � � d� � I �� 1�� �^�i� � �� � �( 1 � I' � �/�� ��'� d l �°o��e z� � 2.> c��a zW � � ��I��1,; li�ll �� f I' / � i' � I�II �I�� //� I z� � �� ��� I�� liil �'I /" 7 w��' � r �i� , � �� i� lil Il�i �.. ��� m��to= i Fr_ W G �O 100 \ � � �!� I � t V ' � ��'� J� '� /// � /�j/ FROM -L- STA.12+62 TO STA.13+61 LT 1 i� � 1 lr 1 `� /� t/ ZO I Y I � �/ j/ / DDE = 20 CY,SLOPE-3.D9% ��a GRAPHIC SCALEe I"= 100' HORIZo '°`���'`�°A�DB00�'� �'a�,£�Ii���I �� `�%��� �i �� �� �� / ���/ FROM -1- STA. 13 -r 70 TO STA. 14 t 30 LT ,�1� DDE - 340 CY,SLOPE�-3.76% � / , ,�'Q� , I � � I �. � A ���I'I'� ��� � F. „/� ,�`. � ,:�1 / - 5�� . 1 � d.��� \ ; 1 ;'C� I .I�'�.. =�� �✓� , . ,�,�',�;.'� PAVEMENT REMOVAL I FOR -L- PROFILE, SEE SHEET NO. 5 FOR -DRVt- VROfILE, SEE SHEET NO. 5 FOR -DRV2- PROFlLE, SEE SHEET NO. 5 POR STRUCTURE PLANS,SEE SHEET 5-? THRU 5-??I WETLAND AND SURFACE WATER IMPACTS PERMIT 40 0 15 40 GRAPHIC SCALEo I"= 40' HORIZo ������u�' � ���� ���� ���� � 0 IN � 0 Q Z LEGEND ��i `�////////. DENOTES PERMANENT IMPACTS IN SURFACE WATER DENOTES TEMPORARY IMPACTS IN SURFACE WATER SITE 1 -L- 13 + 07 � � STA. 13 + 07 -L- � 2@ 13' x 5' RCBC I GP ELEV. = 2516.24 j SKEW =145° � �� ; � 2,520 ��--__ � - I __ �-��` � __ _ _` ______-�_ � �_� , ----4--._ � � '�------------ _ _ � � _ _ � ------- � \ ��__\ 2,510 NORMAL WS ELEV. = 2510.8 ��-!n EXTERIOR: 1.5' SILL IN HIGH FLOW BARREL, J 1' SILL IN LOW FLOW BARREL, SILLS ARE 2,500 INSET 1' FROM END OF CULVERT PERPENDICULAR TO CULVERT FACE (TYP.) � ELEV. = 2508.31 SLOPE=3.15% NOTE: FOR CUT CONDITION, USE CLASS II RIP RAP FLOODPLAIN BENCH BORDER WITH NATURAL GROUND COVERED WITH COIR FIBER MAT INSIDE BORDER. IN FILL CONDITION, USE CLASS II RIP RAP FILL THROUGHOUT WITH NATIVE BED MATERIAL FILLING THE VOIDS ON TOP. � 2:1 (NORMAL) EXISTING RIGHT - � TOP OF BANK � � EXISTING LEFT \ ��� � TOP OF BANK � \ _� � '� , � I��� � � � i \� EXISTING STREAM BED INTERIOR: 1' BAFFLE IN LOW FLOW BARREL, BAFFLES ARE INSET PERPENDICULAR TO CULVERT WALL @ � 16.90' (TYP.) PROPOSED 2@ 13' x 5' RCBC 250 200 150 100 50 1.0' (TYP.) � 16.90' (TYP. ) PLAN VIEW � PROIECT REFERENCE B-4848 - YANCEY 3 ROAOWAY DESIGN ENGINEER SHEET NO. HYDRAULICS ENGMEER DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED PERMIT DRAWING SHEET 5 OF 6 CROSS SECTION 13.0' 13.0' STREAM BED ELEVATION 1' SILL 1.5' S " � 1.0' (TYP.) FLOW - SILLS DETAIL I 0 50 100 150 200 250 FLOW GLI 2,520 2,510 2,500 WETLAND PERMIT IMPACT SUMMARY WETLAND IMPACTS SURFACE WATER IMPACTS 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 FROM 12+61 TO 13+48 -L- 2@ 13' X 5' RCBC 0.02 89 1 FROM 12+02 TO 12+61 -L- CHANNEL IMPROVEMENTS U/S < 0.01 < 0.01 39 19 1 FROM 13+48 TO 13+96 -L- CHANNEL IMPROVEMENTS D/S 0.02 < 0.01 101 11 TOTALS*: 0.05 < 0.01 229 30 0 *Rounded totals are sum of actual impacts NOTES: September 2014