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HomeMy WebLinkAbout20150043 Ver 1_Application_20150113 (2)N'( , X ) f ^/ j (version 1.2 Released July 2012) r mn "are ,a W North Carolina De .art m t of Transportation Highway Stormwater Programw STRMWATER MANAGEMENT PLANn aw° FOR LINEAR ROADWAY PROJECTS Project /TIP No.: 17BP.7.R.62 County(ies): Alamance Page 1 of 1 General Project Information Project No.: 17BP.7.R.62 Project Type: Bridge Replacement Date: 10/4/2013 NCDOT Contact: Galen Cail, PE Contractor / Designer: RK &K Engineers - Corey Cavalier, PE Address: 1590 Mail Service Center Raleigh, NC 27699 -1590 Address: 900 Ridgefield Drive Suite 350 Raleigh, NC 27609 Phone: 919.707.6711 Phone: 919 - 878 -9560 Email: gcail _ncdot.gov Email: I ccavalier(@_rkk.com City /Town: N/A County(ies): Alamance River Basin(s): Cape Fear CAMA County? No Primary Receiving Water: Ivarnals Creek NCDWQ Stream Index No.: 16 -21 a NCDWQ Surface Water Classification for Primary Receiving Water Primary: Water Supply V (WS -V) Supplemental: Nutrient Sensitive Waters (NSW) Other Stream Classification: None 303(d) Impairments: biological impairment Buffer Rules in Effect Jordan Lake Project Descripti ©n Project Length (lin. Miles or feet): Total 0.096 mi Surrounding Land Use: Rural Proposed Project Existing Situ Project Built -Upon Area (ac.) ac. ac. Typical Cross Section Description: 2 -lanes at 10' each with 2' -0" grassed shoulder 2 -lanes at 10' -0" each with 4' -0" grassed shoulder Average Daily Traffic (veh /hr /day): Design /Future: 870 Existing: 870 General Project Narrative: This project replaces existing BR #000125, 1 @17' -811, 1 @17' -0", 1 @17' -8" spans timber floor, 26' -0" wide out to out. The proposed bridge will be a single span @ 85' -0", 33" Box Beam, Spill Thru Abutments, 30' wide out to out. Deck drains will not be required. Runoff from the bridge will be captured on the low end of the bridge and discharged into a rip rap pad into an existing swale at the base of the fill slope outside of the buffer. The discharge velocity from the rip rap pad is non - erosive at 0.6 fps. There is a slight increase in the impervious area of the project, however there is no significant increase in the discharge from the roadway runoff. The fill in the wetlands was minimized by steepening the slopes to 2:1. References