20201934 Ver 1_C-4_SWMP_2021-1-18_20210212

(Version 2.08; Released April 2018)17BP.10.PE.4TIP No.:U-5926County(ies):Cabarrus Page 1 of 1TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?NoDesign/Future:Year:N/AExisting:Year:Aquatic T&E Species?NoComments:N/AN/AN/[e-mail] within Project Limits?High Quality Waters (HQW)NoneSupplemental Classification: Rural ResidentialMill Creek13-17-6-5-(1)0.20.08Project DescriptionProposed ProjectYadkin-Pee DeeRiver Basin(s): City/Town:0.3Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)[e-mail]:1/18/2021CabarrusEnochville, NCGarland HaywoodAlbemarle, NC 28001WBS Element:Culvert ReplacementWBS Element:STV Engineers, Inc. / Peter WaldronNCDOT Contact:[phone]Charlotte, NC 28202Contractor / Designer:(704) 285-6212900 West Trade Street, Ste. 715North Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:716 W Main StreetAddress:General Project InformationU-592617BP.10.PE.4Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)The existing 48', 3-138" X 96" CM pipe arch culvert over Mill Creek on SR 1616 is being replaced with a 3 @ 12' X 8' RC box culvert with 6" top bevel. The two outside barrels will have a 1' floodplain bench for high flows and the middle barrel will act as a low flow barrel. The road over the culvert will be crowned at 2% to the left and right. The road has 11' travel lanes with 6' to the right and 6' to the left shoulders, and a width of 40' from shoulder point to shoulder point. The existing culvert structure will be removed and existing drainage patterns will be maintained. On the end left side of the culvert, a special lateral base ditch with riprap is provided and discharges directly to the upstream side of Mill Creek. Class-I riprap bank stabilization is also proposed on both left and right banks of the stream to prevent future erosion and stream migration. N/ABuffer Rules in Effect:None3400Road over Culvert : Two 11' lanes, 6' to the left and right paved shouldersApproach: Two 11' lanes, 6' to the right and 6' to the left paved shouldersWaterbody Information2017NCDWR 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): Water Supply II (WS-II)NCDWR Surface Water Classification for Water Bodyac.Road over Culvert: Two 10' lanes, 1' to the left and right shouldersApproach: Two 10' lanes, 1' to the left and right shouldersN/AProject 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)