20190104 Ver 3_B4916_PermitPlansandImpact_20200617_20200812

(Version 2.08; Released April 2018)40089.1.2TIP No.:B-4916County(ies):Bertie Page 1 of 3TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?YesDesign/Future: Year:2040Existing: Year:Aquatic T&E Species?NoComments:Yes NoNoWetlands within Project Limits?N/ANutrient Sensitive Waters (NSW)NoneSupplemental Classification: Forest/Agriculture/SwampQuioccosin Swamp25-14-1-6-20.60.152 milesProject DescriptionProposed ProjectChowanRiver Basin(s): City/Town:0.8Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)[e-mail]27610Address:March 2019BertieN/ADan Duffield, PERaleigh, NCWBS Element:Bridge ReplacementWBS Element:Leah Young, PENCDOT Contact:[phone]Suite 400Raleigh, NC 27609Contractor / Designer:(919) 783-92144505 Falls of Neuse RoadNorth Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:1020 Birch Ridge DrAddress:General Project InformationB-491640089.1.2Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)The project will replace Bertie County Bridge #57 and its approaches. The proposed replacement is 85' long with a clear roadway width of 40'. This structure provides 2 - 12' travel lanes with 8' shoulders. The proposed bridge will have 1.5:1 abutments and 4' caps at the end bents. Placement and construction of the proposed bridge end bents, caps and associated roadway fill will result in both temporary and permanent wetland impact. There will be a permanent channel change located upstream LOB of the existing bridge. An on-site detour bridge will be built before construction of the proposed structure. We will use reforestation to restore areas of temporary wetland impacts.There are wetlands within the proposed project limits. Wetland impacts have been minimized by steepening fill slopes where appropriate. There will be a permanent channel change that will place permanent fill in wetlands impacts at -L- STA 14+07.55 RT to 14+84.71 RT. The total project impacts will result in 0.09 AC of permanent fill in wetlands, 0.25 AC of temporary fill in wetlands, < 0.01 AC of permanent excavation in wetlands, and 0.01 AC of temporary surface water impacts. Riparian buffer rules do not apply for the Chowan River Basin.STORMWATER CONTROLS: The proposed bridge project does not utilize deck drains. The deck runoff on the left (west) side of the bridge discharges to through aninlet/pipe system to an existing ditch. The ditch terminates just prior to a wetland at the existing wetland elevation. Flow from the ditch enters the wetland at with non-erosive velocities. The deck runoff on the right (east) side of the bridge discharges to through an inlet/pipe system to an existing vegetated base ditch with 3:1 or flatter side slopes. The riprap pad discharges just outside of the wetland and flow enters the wetland at non-erosive velocities. The drainage area to each ditch does not change from existing to proposed conditions. The entire length of the proposed left side (west) ditch is being claimed for treatment and are listed as such on the "Swales" summary sheet. Roadway runoff is treated via vegetated roadway shoulders and existing/proposed vegetated swales prior to entering the stream.N/ABuffer Rules in Effect:N/ANone3700-L- STA. 10+86.50 TO STA. 11+50.00 and -L- STA. 19+70.00 TO STA. 20+33.50 have 11-12' lanes at existing slope, while -L- STA. 11+50.00 TO STA. 15+17.10 and -L- STA. 16+02.10 TO STA. 19+70.00 have 12' lanes and 8' shoulders. The bridge section (L- STA. 15+17.14 TO STA. 16+02.14) has 12' lanes with 8' shoulders with TL-3 guardrailWaterbody Information2015NCDWR Stream Index No.:NRTR Stream ID:Annual Avg Daily Traffic (veh/hr/day):Existing SiteProject Length (lin. miles or feet): ac.Surface Water Body (1): Class C2ac.21' paved roadway with 3' paved [e-mail] Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?N/ADeck Drains Discharge Over Water Body?(If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the General Project Narrative)(If yes, provide justification in the General Project Narrative)Revised 6/16/2020
(Version 2.08; Released April 2018)40089.1.2TIP No.:B-4916County(ies):Bertie Page 2 of 3Sheet No.Station & Coordinates (Road and Non Road Projects)Surface Water BodyBase Width(ft)Front Slope(H:1)Back Slope(H:1)Drainage Area(ac)Recommended Treatm't Length(ft)Actual Length(ft)Longitudinal Slope(%)Q2(cfs)V2(fps)Q10(cfs)V10(fps)Rock Checks UsedBMP Associated w/ Buffer Rules?-L- 14+007.55 RT-L- 14+84.71 RT-L- 18+19.65 LT-L- 19+50.00 LT-L- 19+50.00 LT-L- 20+00.00 LT-L- 18+00.00 RT-L- 20+00.00 RTNorth Carolina Department of TransportationHighway Stormwater ProgramSTORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSAdditional CommentsNoYesYesNo(1)Quioccosin Swamp(1)Quioccosin Swamp(1)Quioccosin Swamp(1)Quioccosin SwampSwales2103.0No3.46.2 6201.01% 0.81.43.850 4.94.17%2.02.00.30% 4.912.93.0 3.0 3.03.0 3.0 2.1 2107849.92.142.04WBS Element:3.21.5130No2.19%1504 0.0 3.0 3.0 0.7 703.0No2.0 No4.06.46.42.6Revised 6/16/2020
(Version 2.08; Released April 2018)TIP No.:B-4916County(ies):Bertie Page 3 of3Sheet No.Station & Coordinates (Road and Non Road Projects)Surface Water Body Riprap TypeDrainage Area(ac)Conveyance Structure-L- STA 14+85 LT-L- STA 16+34 LT* Refer to the NCDOT Best Management Practices Toolbox (2014), NCDOT Standards, the Federal Highway Administration (FHWA) Hydraulic Engineering Circular No. 14 (HEC-14), Third Edition, Hydraulic Design of Energy Dissipators for Culverts and Channels (July 2006), as applicable, for design guidance and criteria.STORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSBMP Associated w/ Buffer Rules?Pipe0.03Class 'B'Q10(cfs)Pipe/Structure Dimensions(in)0.3N/A15V10(fps)Energy Dissipator TypeRiprap Pad at OutletRiprap Pad at Outlet 0.04North Carolina Department of TransportationAdditional CommentsHighway Stormwater ProgramWBS Element:Class 'B'4(1)Quioccosin Swamp(1)Quioccosin Swamp41.01.7 N/A0.4Pipe 15Preformed Scour Holes and Energy DissipatorsRevised 6/16/2020
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HandExisting Existing Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural SiteStationStructureFill In Fill In in Clearing in SW SW Impacts Impacts StreamNo.(From/To)Size / TypeWetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Design(ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (ft) (ft)< 0.010.08 0.19 < 0.01-L- 15+81 LT TO 16+26 LT< 0.01 < 0.01 < 0.01-L- 15+94 RT TO 16+96 RT< 0.01 0.10 < 0.010.01TOTALS*:0.10.25 < 0.01 0.00 0.000.01 00 0*Rounded totals are sum of actual impactsNOTES:Revised September 2014 SHEET 24OF 24-L- 11+50 RT TO 15+36 RTWETLAND FILL, EXCAVATION DUE TO ROADWAY, & PERMANENT STREAM RELOCATIONWETLAND FILL & EXCAVATION DUE TO ROADWAY-L- 15+35 CL TO 15+85 CLBRIDGE #57 REPLACEMENT; 1 @ 85' - 45'' GIRDER; 40' CLEAR ROADWAY WIDTHWETLAND PERMIT IMPACT SUMMARYWETLAND IMPACTSSURFACE WATER IMPACTSBertieB-491640089.1.2NC DEPARTMENT OF TRANSPORTATIONDIVISION OF HIGHWAYS Revised 6/16/20123-L- 11+38 LT TO 12+04 LTRevised 6/16/2020