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HomeMy WebLinkAbout20160186 Ver 1_Requesting Authorization_20160225Carpenter,Kristi From: Sent: To: Willis, Thomas C Thursday, February 25, 2016 11:45 AM tracey.l.wheeler@usace.army.mil; Ward, Garcy Cc: Carpenter,Kristi Subject: Pedestrian Walkway/Trail from Coastal Studies Institute to Dare County Visitors Center Attachments: COE_DWR_Permit_Request.pdf; LocationMap.pdf; Mitigation_Site_Plan_2001 _VisitorsCenter.pdf; Permit_Photo_illustrations.pdf; PermitDrawings.pdf Follow Up Flag: Flag Status: Tracey & Garcy, Follow up Completed I have attached a request for authorization to construct the proposed elevated wooden boardwalk and trail, which extends from the Coastal Studies Institute to the NCDOT Visitors Center on Roanoke Island. The path follows through two wooded areas along an existing pathway and two state roads (Toler Road, Skyco Road). There are no proposed impacts to surface waters or wetlands associated with this request. The request includes permit drawings, photo illustrations, previous mitigation plat for Visitors and location map. Please let me know if you have any questions or need additional information. If we need to meet on-site again for further discussion, we can coordinate that with a field meeting. I also sent a request to DCM for permit authorization through an existing CSI Major permit. Thanks, Clay NCDOT— Division One Environmental Supervisor Office — 252-482-1876 Cell — 252-312-3692 tcwi I I is@ ncdot.gov Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties. Transportation February 24, 2016 PAT McCRORY cover noi- N[CHOLAS j. TENNYSON Sea�etary USACOE NCDWR 2407 West Sr�' Street 943 Washington �quar•e Mall Washington, NC 27889 Washington, NC 27899 ATTN: Tracey Wheeler� ATTN: Garc;y War•d NCDOT Coordinator NCDOT Coordinator Subject: Requestin� Authorization foi° a Proposed Pedestrian Wallcway fi�om NCDOT visitor's center to Coastal Studies Institlrte in Dare County, North Carolina. WBS Eleinent Number: 44226 References: USACOE Permit # 199502334 �# 200310156 DWR Certificatiozl # 02-1868 CAMA Permit # 7-9� The North Carolina Department of Transportatioll (NCDOT) request authorization to the construct a pedestrian walk way, coiliiecting Coastal Studies Institute (CSI) and NCDOT's visitor's center in Manteo, Dare County. Tlus walkway will provide walking/biking access for students and faculty at CSI, to the Town of Manteo, tllrot�gh I�TCDOT's Visitors Center's existing pedestrian walkwa5�s. Currently, there are no pedestriall sidewalks or trails that link CSI and the Town of Nlanteo. Students and faculty would l�ave to walk/bike down NC 345 and through US 64/NC 345 intersection, in order to visit the Town of Manteo. NCDOT reviewed this route as an alternative, and discovered it is not a via.ble option for multiple reasons. This route is a two lane state highway with significant conunercial traftic traveling to the village of Wanchese. It has a 45 mile per hour speed limit posting, with no provisions for a pedestrian/bike lane. Ther•e are inultiple hoines aizd businesses, several utilities, aloilg with forested wetlands that border the highway shoulder. Widening of this route to accomnlodate a ped�strian lane, would result in iinpacts to business, residential property, utilities and wetlailds. An additional concern with tlus option is the intersection with US 64 and NC 345. This is one of the busiest four- way intersections in Dare County, with 5-6 Ianes of traffic to cross. Introducing a bike/pedestrian travel way across this high volume traffic inte-rsection would create a signi_ficant safety risk, and decrease the efficiellcy of traffic rnoven�ents through the intez•section. NCDOT's proposal is to route the pedesh�ian/bike trail do��vn existing secondary state roads and adjaceilt state property along an eaisting soil pathway. These existing routes provide a much safer and econoinical option, �vith no in�ipacts to wetland�. This alignment was coordinated with CSI and Dar•e Couilty. The wetlands and public trust wateis (man-iliade canal) along the proposed route have been delineated and sho���l on the �ro�ided perinit drawings. Wetland and � v-Nothing Compares="-,�-- State oY North Carolina j Deparlment of l7ensportatioii � Di�ision I I 13 Airpo�i Dri��c i Suite I00 � Fdenton, NC 77932 2,7-d82-1850 surface water impacts 11ave been avoided by designing elevated wooden walkways that will span the length of the surface water and wetland areas. There are two wetland/surface water crossing areas, show�l on the permit drawings. One is illustrated as L1 and the other L2. The wetland system at L2 is associated with a NCDOT initigatio�i site. This mitigatioil site was built in conjunction with the Visitors Center in ?001. The mi.tigation site borders the back side of the Visitors Center property. NCBOT's pedesh�ian walkway/bike trail proposal includes spanning 60 feet of this wetland mitigation site with an elevated wooden walkway, which corll�ects the proposed trail to the Visitors Center. The elevated woode�l wallcway will average 7-8 feet in height above the wetlaild initigation area and be constrlictad witli a S feet wide travel way. Total length of the elevated wood walkway at L2 is 190 feet, spaniung the c�•eek/canal, proposed wetland restoration area and existing initigati o�l area. There is �10 proposed wetland fill associated with this wooden walkway. The alig;tullent of the pedestriall walkway/bike trail across the mitigation site is in coliflict with a previous t1SACOE 2001 permit conditioil for the Visitors Center. In order to off-set any potential �legati.v� impact froin crossing the mitigation site with the elevated wooden walkway, NCDOT is proposilig additional on-site wetland restoration and hydrologic enhancement to upstream forested wetlands. Tl�iis will be done by the removal of 0.03 acres (1200 sq.ft.) o�existiilg soil roadway, which is contiguous to tl�e initigatiorl area and reinoving 3 existing culverts within the upper reaclles of Co11iz1s Creek. These 3 culverts are located within the proposed wetland resl.oratioia area, within t11e floodplain, for this upper reach of Collins Creek. The restored floodplain wetland wi11 be vegetated with native marsh grasses (Juncus f�oemei�ianz�s, Sp�x�tina p�rtens, Clcrdit�»� ju»�c�icense). By removing the 3 ctilverts and restoring the floodplain wetland elevations, tidal flows will be able to move with less restriction and increase upstrearn tidal flooding fi•om the �roatail Sound. The forested wetland system above the culverts is approximately 50 acres in siz� and has coastal wetland species bordering the surface water draiilage features. The reinoval of the 3 culverts and floodplain wetland restoration, will enhance the estuari�le influence on the pr�perty. T'l�is pro�erty is currently in state ownership, within a conservation use. The proposed wooden ��alkwa�� will cross this reach of Collins Creek at an elevation of a�proximately 6' above the mea�i }iigh water surface. This will allow kayak and ca�loe access upstreain of the culvert f•en�oval point, which is currently not available. Collins Ci•eek, behind the Visitor's Center is a kayak/canoe public access location, with a launch pier constructed in 2003. The Ll elevated wooden walkway is 1o6:,ated near CSI and spai�s over a man-made ditch and associated wetland. The diich ties into CSI's boat launch canal appz•oximately 350 feet down streain. Tlus man-made ditch averages in depth of 1 foot, witii less than 1 foot at the poiilt of elevated wooden wallcway crossin�. This ditcla was del�erini_ned to be public trust waters, therefore, requues a perinit foi the new �vooden walkway sparinir�g �17e water body. The proposed walkway is 133 feet long and 5 feet in width.. l-�t the point of �rossing over the water body, there will be 2.5 feet of vertical clearar�ce between the structure aild the i�orrnal water line. There are no wetland or surface water iinpacts associated witli tl�is crossiiag. Al1 wetlarids and surface waters have been avoided by eate��ding the wooclen u�alkway beyond the wetland boundaiy limits. With this request I have included a locatioil map, permit d��awii�gs, and photos of the sites. If you should have any questions regat•ding this request, please contact Clay Willis at (252) 482-1876 or tc����_11�;'�i-���el��t.�c>_�-. �in�erely, Jerry Jennings, Y.I;., Division F,ngineer NCDOT Division 1 �`� ��� Clay Willis, �"�lviromllental Supervisor N�DOT Division 1 Cc: Randy Midgett, P.E., NCDOT Garcy Ward, NCDWR Kristi Carpenter, NCDWR CSI - Visitors Center Pedestrian Walkway Roanoke Island, Dare County �- 't,� . . � .. `.. .. -� '�/' t ' -,;. � — ,� • �. � M - f i.`- . ,{�� � . � �� � � � '�1. � � ` j: . � �� �� � � ; ,� �,,.,�}� '� i ~, r�' `' � -� '�',��C. ! , �.. ,� t _ �-. f��.� ; ,. �u� '�w_ �� ,���� � ��' " , , t{�.�, wltv y''� .,�� .� �� � � �.�'�t � �_���' _� o. �� _ {r_�;�� l A .�;�i f�,f r�k�r �aj/,��' �� .l� ,� ` i �\ �11. �_ /�� �� t , ;�' .rr �YT.,w , �.t �n s'� 1 ' � r�• , � � �' . � •, � t' �tr �• y�,*f� � �i• � � �.d4n'�) �,fr�.i. ��� M' ♦ 1' ' - �� � , �� � w S 1; . !: � `�.� • ; ' +�. 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' � .x � 4: � , x . : .r � ' :. 4 � , �} ` �, s�� c ,' . , b � � ��'t' F ,. , � .ar g ��p * .t,sq fi`• j F t. � �� � -� r :� '�' • '� , , � :� +�`r ; �r ` }„� ; � _- :� -� �,� � , � �` -' � ;�� '� ' ; ; =; �Y • ��•` �f rR �t � �'.�i "� } t . I `! F " y,� y�'`� � � r� � - � � F �i.�' , c$:- ��� �' e ��` -�'' .' ' � . " :: : j ' ^ • � �, � r•�� .� :;,� tr� � � ' �� ��;,� t; t. I' j �'+-!.� � �...�� � r a. �', � s �._ �• �` +e ,'� �•i r` /« � • �4 � e` �i r � � �f��' ; ��, �t',=� t � > r y ;.�, `1 , ,, P � ;:,,� �. �'�• �y� r . u r � N., - • �'f�E �.+i. �Pf. °4s+. � � ri: -, . ._ ,. __ .. r _ . . a _ s_ � v�• PROJECT LENGTH P�e/nie0 in fhe Otflce of: DIVISION OF HIGHWAYS LElt'GTH OF STONE WALKWAY -LI- = 593 LF !73 Airport Dr., Edenton, NC 27932 I.ENGTH OF STONE WALKWAY -L2- = 821 LF zou sraxoarso SPEClFICATIONS TOTAL LENGTH OF STOIYE WALKWAY = 1,414 LF RIGHT OF WAY DATE: W. B. HOBBS. PE LENGTH OF ELEVATED WOODEN WALKWAY -LI- = 133 LF DlVIS70N PROJECT MANAGER LEIIGTH OF ELET�ATED WOODEN WALKWAY -L2- = 190 LF LETTIIVG DATE: CHRIS SLACHTA TOTAL LENGTH OF ELEPATED WOODEN WALKWAY = 323 LF orvrsrox rnoPosnrs Excix�x , ,$ •L � _ ��� . � .,-t , �J� .,,. �1, � � . . s � +� . 9.tY. '� e ;� -�.� A`� �� �� ��� . � -.1,; . , _ . . , ,. ` Y� � � � ��„ �.� F,� � a�;, ,, �_� . $ ,� '�, ¢` p `s: * `y1�" �� P t � � *,'Yi'"y _j � 'ri � i • � �'�' �- �i� � �� . t. �irx �`� � ���p , : �� w� 4' k V � �.V� .� ��' _ � ,a�r#`i� a-'�-.� �� F � �`*� . C .J ` •'n` • ��f+.�,3�"��t`t�' _ ,_ '� �`9.. �, �i':�r' =.�� � _?t' _ ROADWAY DESIGN ENGINEER S. P. FENWICK, PLS � Q' PROJEC� REFERENCE NO. SHEET NO. � 44226 4 � A�IG�IMEI�T -�I- PlSta 12�97a76 � = 5/° 58' 1304° (LT ) D = 286° 28' 4400" �_�8��4� Pl Sta l3 f66e02 , Pl Sta ll +37086 ���� T= 9e 7 5' �= 2 6° 5 5' 2 70 7° ( L T ) 0= 83° 0/' 1304" �LT ) `� R= 20000 �_//4° 35' 2906„ � D= ll4° 35' 2906" L= 23050' — - L = 72045' � N T = //e97' 0 , T = 44025' � � R = 50000' � � R = 50e00' � � � � o� � � � � N � 0 LEGEND C� p � d- � � � �� �� � p � � 9� STONE PATH � y � � S�`p � �/x � � � � �� ELEVATED WOODEN WALKWAY O � � �O � v � O � N �x -F- z � � �cS ��s 59° 07, � � � s � SCALEa i° = zo� ° OO N ,OS 338 � � � � FULL SIZE PLANS � � � 6.58 O �s � w�e� � O 9 � O 72 32 34 � 6.91 k I � „ �� \ °� � � o �`'� 47090 �o -' 67� 23, 54 W� � 0 2� o� o , , � � ��� `l�\ 2'�� ��� � N 6 ° l2' 44" W �o� s Q'-��� (�O � � � kp�� (�x`� ��/' � �� � � 31 .,lJ . `LJ .-0.. � � \ \'/, �/i � � f1 a .� � i U 0 D L T R � iv-��vei� 42° 43' 1606" (RT ) 286° 28' 4400" /409/' 7a82' 20000' Pl Sta 0 = D L / T R � � � a � D L T � e 48° 53' 030/" (RT ) 286° 28' 44°0" 17006' 9009' 1 / +89007 R = 20°00' 48� 34' 1706" l RT � 286° 28' 4400" 6095' 9e�2' 20a00' �s BEGIN ELEV AT ED W OODEN W ALKW AY ST Ao l3 f 22°00 30" ABOV E CREEK NORMAL W AT ER ELEV AT lON � °� PROJECT REFERENCE NO. SHEET NO. -- /� � � � � � � T _ � I 44226 5 � `� ( _ m y�a �� �.-���,�, �- � ,/ �v � 45 �� / � � ��% 6.33 (^ �ti QD ° c� Pl Sta l6 �36099 " �. J , �� w�e --_ j� 2 � \ � 0 = 42° 53' 2200" �RT � ' �° �g D = 38° ll' 4909" `�� 42 ; N g L= 112028' � � � � T = 58092' �, � 5.a� i � x , — � R — 150000' s o � o � � °o : � 3 ° : �` WLB � , � .: s v � a � � _ q �y LEGEND � � � F`� STONE PATH 0 a 9 E�EVATED WOODEN WALKWAY Y C � U / � SCALE: I" = 20' � 0 y Y � FULL SIZE PLANS 0 � Y U O � vi� -N �/ O � N� dh W� In/ -U N � a x � Pl Sto l4 +80.33 � �= 87° 28' 23.4" l RT J a � D = ll4° 35' 29.6" � � L = 76.33' 0 : T = 47.84' Y � R=50.00' Y U Q� ��:�1 Pl Sto l5 +72.69 �= 27° 0/' 4/.2" <LT 1 D = 38° ll' 49.9" L = 70.76' T = 36.05' R = 150.00' � �c �h Q�IG�IMEI�T -�2- LEGEND STONE PATH ELEV�TED WOODEI�� WALKWAY � SCALE: I' = 20' FULL SIZE PLANS �p $-�--- BEGIN 190' ELEVATED WOODEN WALKWAY STA.18+15,30 PROJECT END STONE WALKWAY �0 MATCH EXISTING CONCe SIDEWA�K APPROX. STAe 20+IIv00 Pl Sto l8 f 93.94 0_ 600 22, 3/.8°„(LT 1� D 44 04 25.2 0� L _ I36.99, s� T 75.62 O R = 130.00' � ' � � � �X � ` `�� ��� x `� � �� �' . � ' �9 � '�`�` �''``; "S o• '� � � s �2 � �` �� � c,��' � � �, ' o . , _� , � � �� o � � REMOVE Q EXISTING PIPES �. Re:::�,n�=-. �`�a v� � �� ��. , �� � � , �s; ,�����,� SHEET NO. ; <. � i `c� r C � vl �-�-'f=---- _ REST AREA �� � � ��� END E�EVATED WOODEN WALKWAY STAe 20+05a30 `�-�' � �v�; � ., �r,,,.,;yrJ ~-y, �` i .. � • � P� ' ; !�_V _ _ ':-� . ; : � � ;� � �% ._...,. _ . , , , ° ,.� ,.�, r ,....- i �� �� � � � 10 \. 't EMOVE EXISTING FILL GRADE TO ADJACENT WETLAND APPROXa 1200 SQe FT. v,a� �+c���� c rn a N a a 3 K N � c 3 0 c � 0 (J 0 c � U �^ ZU Q in �� tvU ELEVATED WOOD WALKWAY NOTES: I. IN CASE OF DISCREPANCY IN DIMENSIONS OR DETAILS, BETWEEN MANUFACTURER AND STRUCTURAL DRAWINGS NOT AFFECTING STRENGTH, THE MANUFACTURERS PLANS SHALL GOVERN. FOR DIMENSIONS AND DETAILS NOT SHOWN, SEE MANUFACTURERS PLANS. 2. WHERE A DETAIL IS SHOWN ON STRUCTURAL DRAWINGS FOR ONE CONDITION, IT SHA�L APPLY TO AL� SIMILAR OR LIKE CONDITIONS, UNLESS NOTED OR SHOWN OTHERWISE ON PLANS. 3. ALL ITEMS SHALL BE TIGHTLY ANCHORED OR ATTACHED SQUARE,PLUMB AND TRUE,OR IN OTHER PLANES AND SHAPES AS SHOWN ON THE DRAWINGS. JOINTS SHAL� BE TIGHT, EVEN, AND FREE OF OFfSETS. NO FIELD ALTERING OF ANY MEMBERS WILL BE ALLOWED THAT WILL CAUSE THEM NOT TO BE IN ACCORDANCE WITH THE DRAWINGS AND SPECIFICATIONS, WITHOUT WRITTEN APPROVAL Of THE PROJECT ENGINEER. 4. THE DIMENSIONS SHOWN WITH A SUFFIX '' ARE APPROXIMATE AND SHALL BE VERIFIED BY THE CONTRACTOR BEFORE FABRICATION. 5. IF THE CONTRACTOR FINDS A DIFFERENCE BETWEEN THESE DRAWINGS AND EXISTING ELEVATIONS, OR OTHER CONDITIONS WHICH PROHIBIT EXECUTION OF THE WORK AS DIRECTED IN THESE DRAWINGS, CONTRACTOR SHALL NOTIFY ENGINEER IMMEDIATELY. 6. LUMBER SHALL BE RATEO (AWPA STANDARDS)AS FOLLOWS: PILINGS: SET OUTSIDE OF TIDE ZONES: UC-4C � SET IN SALT OR BRACKISH WATER AND TIDE ZONES: UC-5B GIRDERS: WITHIN SPLASH PRONE AREAS IN SALT OR BRACKISH WATER INSIDE TIDE ZONES: UC-56 OTHER: tJC-4B STRINGERS/JOISTS/TIES: GROUND CONTACT OR SPLASN ZONE:UC-4B OTHER: UC-3B DECKING AND HANDRAI : GROUND CONTACT OR SPLASH ZONE:UC-48 OTHER: UC-38 7. ALL BOLTS TO BE HOT DIP GALVANIZED,ALL FASTENERS TO BE STAINLESS STEEL OR TREATED FOR EXTERIOR EXPOSURE AND USE. 2' X 6' CAP RECESS UPPER RAIL BETWEEN POSTS WHERE HANDRAILIS PROVIDED 4J(G(6)- RAMP HANDRAILS i SHALL BE 1�/q' TO I�/p' IN �Z �� WIDTH OR DIAMETER WITH THE 62 • �'�- OUTSIDE FACE OF THE 7Z • HANDRAIL A MAXIMUM OF 3�/p' 2X4 FROM THE WALL OR BUILDING FACE HANDRAIL 2' X 8' 34' MIN. TO 38' MAX TO FINISHED RAMP WALKING SURFACE A�L SURFACES ON HANDRRAIL TO BE ROUTED AND SANDED HANDRAIL �ETAIL NTS 3 Z•� 2XI2 OR 2XI0 GIRDER (2> 5/g' GAIVANIZED BOLTS PER CONNECTION NOTCH I' EACH SIDE � GIRDER CONNECTION DETAIL NTS 4X6 TREATED T SLOPE=p, pjN / 1� 4'-0° -�I CONCRETE OIUTLET PADS TO BE FIEL� LOCATED BY THE ENGINEER AT PATH LOW POINTS CONCRETE OUTLET PAD NTS 4X6 TREATED TIMBER� — 5'— REMOVE FOREST GROUND DEBRIS TO BARE SOIL �' "4��2 � UNDER PATH LOCATION �/4'/FT �7g STONE EX. GRADE �� �2'-0'A4 REBAR (SEE PLANS FOR & 4' O.C. CRADES AND SLOPE DIRECTION) PROPOSED GRADE STONE SHALL BE COMPACTED BY PLATE TAMP PEDESTRIAN TRAIL SECTION NTS WOOD WALKWAY I'XIO' TREATED (SEE DETAI�)� � �UMBER PEDESTRIAN TRAIL %— (SEE DETAIU 5'X4'X4' CONCRETE DRAINAGE OUTLET PAD SEE GIRDER CONNECTION �ETAIL PROVIDE HANDRAIL (BOTH SIDESI WHERE NECESSARY PER ADA REOUIREMENTS (i 5% SLOPE) WHERE THE HANDRAIL TERMINATES AT THE TOP OR BOTTOM OF A RAMP, IT SHALL EXTEND A MINIMUM OF 12' PAST THE TOE/TOP OF THE RAMP. ADD 5'X4'CONCRETE PAD AT EACH END OF ELEVATED WOOD WALKWAY TYPICAL FOR TRANSITION TO STONE TRAIL W000 WALKWAY TO STONE TRAIL CONNECTION NTS PROIECT REFERENCE NO. I SHEET NO. 5/g' GALVANIZED DOME HEAD BOLTS W/ 3'WAHERS SCAB OR LAP SPUCE STRINGERS 2' OVERLAP WITH (2) 5/g' GALVANIZED� BOLTS & 3' WASHERS � � ELEVATEO WOOD WA�KWAY SECTION NTS 42' 60' � � � � 8' MINIMUM PENETRATION � 2X6 DECKING (TYP) USE (2) 2' SCREWS/80ARD/JOIST 2X6 RAISED CURB (TYP) 2X8 & 12' O.C. 2-2XI0 BOLTED TO 6X6 PIIING WITH `'/9'GALVANIZED BOLTS 6X6 PILING SPACED 8' O.C. MAX. (TYP) -2'X4' WOOD TIES WITH (6) °I2 NAILS 'PICAL @ INTERIOR STRINGERS) ON 2X8 CAP fASTENEO WITH l31 �12d NAILS AT EACH PILE & AT 2' O.C. AIONG TOP RAIL (TYP) 2X4 (TYP) 8' MAXIMUM HORIZONTAL GAP fASTENED WITH �/z' GAIVANIZED DOME NEAO BOLTS & 3'WASHERS 2X6 DECKING FASTENED WITH 12d �(3�/4') NAILS (3 AT EACH STRINGER) 6X6 POST � 6' O.C. MAX. 2XI0 � 16' O.C. 0 2-2XI2 BOLTED TO 6'X6' PILING (SEE GIRDER CONNECTION DETAIU 6'X6' PILING OW 6'o MARINE GRADE SPACED IO' O.C. MAX. (TYP) (21-2'X4' WOOD TIES WITH (6) °I2 NAILS , (TYPICAI � WTERIOR STRINGERS) ELEVATED WOOD WALKWAY WITH RAILS/HANDRAILS NTS