20171171 Ver 1_Build Maps_20170912

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2 *Site 1A dewater entire disturbed channel length -see next pageSite 1CSite 1BSSSSite 1A*Site 1
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2 SITE 1A Details
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(Version 2.07; Released October 2016)17BP.14.R.6TIP No.:SF-870028County(ies): Page 2of 2Sheet No.:4Station:11+92 -L-Barrel Height (ft):Culvert Length (ft)%%Evaluate/Describe Roadway Geometric Constraints:The culvert is in a curve in the roadway.Proposed Culvert 2-yr Outlet Velocity (ft/s):6.8Natural Stream Channel 10-yr Velocity (ft/s):8Proposed Culvert 10-yr Outlet Velocity (ft/s):8.3Roadway Geometric ConsiderationsBank Stabilization:Bank Stabilization is called for at the culvert to bank tie ins both up and downstreamNatural Stream Channel 2-yr Velocity (ft/s):7.2Outlet VelocitiesBends at Inlet/Outlet?(describe culvert alignment with stream)NoStream Realignment Necessary? (provide justification)NoCulvert/Stream AlignmentStream Patterns Upstream and Downstream of the Culvert that Could Affect Fish Passage and Bank Stability:Culvert is in a relatively straight stretch of streamBed Forms Impacted by Culvert (riffles, pools, glides, etc.):Culvert is in a riffle section of streamLow Flow Floodplain Bench Required? (provide justification)Yes6 ft. wide by 1 ft. deepProposed Sills/Baffles:A sill is proposed at the inlet and outlet of culvert with an additional baffle halfway along culvert length.Existing Low Flow Velocities in the Stream (ft/s):1.7Proposed Low Flow Velocities Through the Culvert (ft/s):1.7Alternating Low Flow Sills/Baffles:There are low flow sills and baffles. They are not alternating as this is a straight stretch of streamCulvert BurialProposed Culvert Burial Depth (ft):1.0 ft.Existing Streambed Material:sand, gravel and cobblesProposed Low Flow Dimensions Through the Culvert:Avoidance and Minimization Efforts:(Bridge to Culvert)Direct discharge into stream has been eliminated. Existing stream pattern and profile has been maintained through culvertStream SlopeFish and/or Aquatic Life PassageExisting Average Stream Slope (%):2.00Existing Low Flow Channel Dimensions in the Stream:7 ft. wide by 0.5 ft. deepProposed Culvert Slope (%):2.00Surface Water Body:(1)Morton Creek45' +/-Culvert Type:Aluminum Box Culvert6' 1"Proposed Structure SummarySheet No. & StationDrainage Area (ac or sq mi):0.72 sq. mi.Number of Barrels:1Barrel Width/Diameter (ft):19' 0"North Carolina Department of TransportationHighway Stormwater ProgramSTORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSWBS Element:Bridge to Culvert Avoidance and Minimization
(Version 2.07; Released October 2016)17BP.14.R.6TIP No.:SF-870028County(ies): Page 1 of 2TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?NoDesign/Future:Year: Existing:Year:Aquatic T&E Species?Comments:NoN/ANoN/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)ac.2 10' lanes with variable width grassed shouldersProject Includes Bridge Spanning Water Body? Deck Drains Discharge Over Buffer? Dissipator Pads Provided in Buffer?NRTR Stream ID:Annual Avg Daily Traffic (veh/hr/day):Existing SiteProject Length (lin. miles or feet): ac.Surface Water Body (1): Class CNCDWR Surface Water Classification for Water BodyBuffer Rules in Effect:3802 10' lanes with 3' grassed shouldersWaterbody Information2013NCDWR Stream Index No.:17BP.14.R.6Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)Replace existing 18'6" timber vertical abutment bridge with 19'0" x 6'1" Aluminum box culvert. Direct discharge into stream will be eliminated. Stormwater will be discharged as far away from stream as practicable. Existing drainage patterns to be maintained. A 6' base low flow channel will be maintained through culvert.North Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:1590 Mail service CenterAddress:General Project InformationSF-870028WBS Element:Bridge to CulvertWBS Element:NCDOT Contact:919-707-6751Contractor / Designer:[e-mail]:9/11/2017Marc Shown, PERaleigh, NC 27699-1590River Basin(s): City/Town:Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)Rural-woodedMorton Creek0.057 mi.Project DescriptionProposed ProjectFrench BroadSupplemental Classification: Trout Waters (Tr) Wetlands within Project Limits?