20211026 Ver 1_R-2511_HYD_SMPv2.08_(20210609) (Apr 2018)_20210623

(Version 2.08; Released April 2018)35494.1.1TIP No.:R-2511County(ies):Beaufort Martin Page 1 of 3TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?YesDesign/Future:Year:2040Existing:Year:Aquatic T&E Species?NoComments:NoN/AN/AWetlands within Project Limits?Swamp Waters (Sw) NoneSupplemental Classification: Nutrient Sensitive Waters (NSW)Rural / Farmland/ ResidentialUT Old Ford SwampRoanoke28-103-14-149.010.62 milesProject DescriptionProposed ProjectTar-PamlicoRiver Basin(s): City/Town:105.0Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)[e-mail], NC 27932Address:MartinNo6/9/2021BeaufortWashington/WilliamstonJohn S. Abel Jr.113 Airport Drive Suite 100WBS Element:Roadway WideningWBS Element:RK&K: Brent Huskey,PENCDOT Contact:252-482-7977Suite 700Raleigh, NC 27615Contractor / Designer:919-878-95608601 Six Fork RoadNorth Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:NCDOT - Highway Division 1Address:General Project InformationR-251135494.1.1Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)The widening of US 17 between Washington and Williamston will involve alignment improvement, adding lanes and drainage improvements. There are four major crossings on the project providing adequate cross sectional openings to allow water to travel under US 17 without impacting any structures adjacent to the project. The four major crossings consist of a set of dual bridges and three RCBCs. Drainage outfalls along the project have been analyzed to verify stability as well as outlet protection has been incorporated into the design for all proposed drainage improvements. Areas of the project around jurisdictional features have incorporated steeper side slopes of 3:1 to minimize impacts. Due to the water table being at the existing ground, there is a requirement by geotech for the entire length of the project on both sides of the highway, the ditch flow line has to be at least 5' below the edge of travel to allow the ground water to drain properly. The first half of the project is located in Beaufort county which is located in the Tar-Pamlico river basin. The Tar-Pamlico river basin adheres to buffer rules so there are buffer swales that run parallel to US 17 providing filtration before water enters jurisdictional streams. There are 17 sites on the project that have buffer filtration in the Tar-Pamlico river basin. The second half of the project is located in Martin county which is located in the Roanoke river basin. The Roanoke river basin does not adhere to buffer rules.Tar-PamlicoBuffer Rules in Effect:None ProvidedNone9,164The proposed typical cross section of US 17 will be a four lane highway with (2)-12' lanes in each direction with 4' shoulders. For most of the project there will be a 46' median from edge of travel to edge of travel. Through out the project there will be various locations with bulbout turns.Waterbody Information2020NCDWR 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 CNCDWR Surface Water Classification for Water Bodyac.The existing typical cross section for US 17 is a two lane highway with 12' lanes and 2' shoulders.14,[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)
(Version 2.08; Released April 2018)WBS Element:North Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTS35494.1.1TIP No.:R-2511County(ies):Beaufort Martin Page 2 of 3Aquatic T&E Species?NoComments:NoN/AN/AAquatic T&E Species?NoComments:YesNoNoAquatic T&E Species?NoComments:NoN/AN/AAquatic T&E Species?NoComments:NoN/AN/A(If yes, provide justification in the General Project Narrative)(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)Project 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)Project Includes Bridge Spanning Water Body? Deck Drains Discharge Over Buffer? Dissipator Pads Provided in Buffer?N/ADeck Drains Discharge Over Water Body?NoneSmithwick CreekNCDWR Surface Water Classification for 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)Deck Drains Discharge Over Water Body?NCDWR Surface Water Classification for Water BodyProject Includes Bridge Spanning Water Body? Deck Drains Discharge Over Buffer? Dissipator Pads Provided in Buffer?N/ANoneSurface Water Body (3): NoneNRTR Stream ID:Nutrient Sensitive Waters (NSW)Impairments:NoneOther Stream Classification: NoneSupplemental Classification: Class C23-50-2Swamp Waters (Sw) Primary Classification: (If yes, describe in the General Project Narrative; if no, justify in the General Project Narrative)Surface Water Body (5): Jacks SwampNCDWR Stream Index No.:23-50-2-1(If yes, provide justification in the General Project Narrative)NCDWR Stream Index No.:Primary Classification: None ProvidedBuffer Rules in Effect:N/ANCDWR Surface Water Classification for Water BodyPrimary Classification: Class COther Stream Classification: NoneNoneNRTR Stream ID:Impairments:NoneNone ProvidedBuffer Rules in Effect:None ProvidedProject Includes Bridge Spanning Water Body? Deck Drains Discharge Over Buffer? Dissipator Pads Provided in Buffer?N/ASupplemental Classification: Supplemental Classification: Other Stream Classification: Other Stream Classification: Impairments:NoneNoneNRTR Stream ID:Class CPrimary Classification: NCDWR Surface Water Classification for Water BodySupplemental Classification: Gum SwampNCDWR Stream Index No.:28-103-14-2-128-103-14-2Nutrient Sensitive Waters (NSW)Swamp Waters (Sw) UT to Latham CreekNCDWR Stream Index No.:Additional Waterbody InformationBuffer Rules in Effect:Tar-PamlicoNone ProvidedBuffer Rules in Effect:Tar-PamlicoWBS Element:Surface Water Body (2): (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)Deck Drains Discharge Over Water Body?(If yes, provide justification in the General Project Narrative)NRTR Stream ID:Surface Water Body (4): Class CImpairments:
(Version 2.08; Released April 2018)35494.1.1TIP No.:R-2511County(ies):Beaufort Martin Page 3 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- 18+48 RT-L- 17+75 LT-L- 17+79 LT-L- 18+91 RT-L- 54+10 LT-L- 54+11 RT-Y2- 17+25 LT-L- 55+43 LT-L- 55+43 LT-L- 69+53 LT-L- 68+84 RT-L- 68+88 RT-L- 69+59 LT-L- 98+50 RT-L- 98+94 RT-L- 99+34 LT-L- 99+39 LTNorth Carolina Department of TransportationHighway Stormwater ProgramSTORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSAdditional CommentsNoNoNoNoNoNoNoNoNoNoNoNoNoNoNo65161510-113.0113.0Swales1.81.8 Yes1.9 Yes2.03211.72379.4Yes6.99.04921.6 YesYesYesYes2.1 Yes1.5 Yes0.49%22511035342.12.61.91.42.018.64.04.04.93.04192.03.01.93.714.4Yes2.21.5 1451.32.11.19% 2.01.91.69620.55%0.42%0.59%2.12.19%14.316.11.00%3071.51%2.0459 12.20.66%6.04.03.03.03.04.01.30.30% 6.60.30% 15.75.54.0 3.0 3.03.01.93.0 5.4 5364.0 3.024821044.21.44.24-54.03.0 3.0 4.9742.1WBS Element:2.01.74Yes211571Yes1.61%8.63.07373.04.0 3.0887-84.0 3.0662873.0 6.60.73.053649021074.0 3.0 3.0 1.9 1890.74%13.64.73.080.94.03.0431254.08-92.09389.422.8465 0.62% 2.05213.0 3.13.04.0 3.0 2.44.0 3.0 3.03.01110-118-93.03.04.01.3 4500.63%4.01.53.83.0 1300.52%3.04.03.2307 1006Yes2.1 Yes2.0 Yes2.1 Yes2.1NoNo0.82%1.8Yes2.14.917.629.620.315.97.84.73.318.72.811.612.29.020.9