20171172 Ver 1_SW Plan_20170913

(Version 2.07; Released October 2016)17BP.9.R.14TIP No.:17BP.9.R.14County(ies):Rowan Page 1 of 2TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?NoDesign/Future:Year: Existing:Year:Aquatic T&E Species?NoComments:YesNoNoN/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.2-8' lanes w/ 6' grass [e-mail] 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): Water Supply II (WS-II)NCDWR Surface Water Classification for Water BodyN/ABuffer Rules in Effect:N/ANone4602-10' lanes w/ 3' grass shouldersWaterbody Information2008NCDWR Stream Index No.:17BP.9.R.14Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)The project 17BP.9.R.14 consists of constructing a new bridge, 55' long, to replace the existing bridge #186 in Rowan County, on SR 2568 over UT to Dutch Buffalo Creek. Runoff from the bridge deck drains to the east approach where it is captured in an inlet and conveyed to a rip rap ditch before discharging to the stream.This project creates surface water impacts by adding bank stabilization to UT to Dutch Buffalo Creek. Impacts have been minimized by avoiding the use of deck drains, promoting sheet flow and inflitration with grassed shoulders, and providing rip rap bank stabilization where ditches tie into the stream. The removal of existing road fill under the bridge will improve conveyance and reduce velocities in the bridge opening. WSPNorth Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:375 Silas Creek ParkwayAddress:General Project Information17BP.9.R.14WBS Element:Bridge ReplacementWBS Element:Charles Heafner, PE, CFMNCDOT Contact:336-747-78001001 Morehead Square Drive, Suite 610Charlotte, NC 28203Contractor / Designer:[e-mail]:8/31/2017RowanRockwellMatthew Jones, PEWinston Salem, NC 27127River Basin(s): City/Town:0.2Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)NoForest, agriculture and light residential developmentDutch Buffalo Creek13-17-11-(1)0.20.07 miProject DescriptionProposed ProjectYadkin-Pee DeeSupplemental Classification: High Quality Waters (HQW)Wetlands within Project Limits?
(Version 2.07; Released October 2016)TIP No.:17BP.9.R.14County(ies):Rowan Page 2of2Sheet No.Station & Coordinates (Road and Non Road Projects)Surface Water BodyRiprap TypeDrainage Area(ac)Conveyance Structure-L- 13+80 Rt.Preformed Scour Holes and Energy Dissipators0.5WBS Element:(1)Dutch Buffalo Creek4Highway Stormwater ProgramAdditional CommentsNorth Carolina Department of TransportationV10(fps)Energy Dissipator TypeRiprap Apron/PadSTORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSBMP Associated w/ Buffer Rules?Ditch0.1Class IQ10(cfs)Pipe/Structure Dimensions(in)0.2 N/A15* 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.