20181291 Ver 1_B-4501_StormwaterManagementPlan_9/24/2018 10:46 AM

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SlortilWcltel' Highway Stormwater Program
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STORMWATER MANAGEMENT PLAN --
(Version 2.07; Released October 2016) FOR NCDOT PROJECTS
WBS Element: SF-300325 TIP No.: 17BP.3.R.76 County(ies): Duplin Page 1 of 1
General Project Information
WBS Element: SF-300325 TIP Number: 178P.3.R.76 Pro'ect T e: Bridge Re lacement Date: 8/14/2018
NCDOT Contact: Jon Moore Contractor / Desi ner: Richard A. Moore, PE, McKim & Creed
Address: 1020 Birch Ridge Drive Address: p43 North Front Street
Raleigh, NC 27610 Wilmington, NC 28401
Phone: [phone] Phone: [phone]
Email: 'moore6 ncdot. ov Email: ramooreCu�mckimcreed.com
Cit /Town: Mount Olive, NC Count ies : Du lin
River Basin s: Ca e Fear CAMA Count ? No
Wetlands within Project Limits? Yes
Pro'ect Descri tion
Pro'ect Len th lin. miles or feet): 850 feet Surroundin Land Use: Residential, Agricultural, Undeveloped
Pro osed Pro'ect Existin Site
Pro'ect Built-U on Area ac. 0.6 ac. 0.6 ac.
Typical Cross Section Description: The bridge replacement is proposed to be a single span 24" cored slab bridge: 1@ 70'. The existing bridge has a concrete wearing surface on two (2) spans: 2@ 30'. The
The replacement will be along the current existing roadway alignment in the same bridge deck is prestressed concrete on timber piles. The existing clear roadway width
location. 33'-0" bridge width with 30'-10" clear roadway. 2-11' lanes 2.5 % slope with 4'- is approximately 28 feet with a deck width of 29.5 feet. 2-10' lanes with 4' shoulder.
5" shoulder.
Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: N/A Year: Existin : 530 Year: 2012
General Project Narrative: This bridge replacement project is located to the southeast of Mount Olive, NC and is in the Cape Fear River Basin. The total project length is 850 feet along the existing
(Description of Minimization of Water SR1004 roadway alignment. The project is located within a 3.9 square mile Northeast Cape Fear River drainage area which has a classification of C;Sw. The projecYs drainage
Quality Impacts) system consists of two (2) proposed catch basins that direct runoff to the wetlands through a pipe network to an outfall. A rip rap pad is proposed at the pipe outlet to provide
diffuse flow before runoff enters the wetlands. The outfall and rip rap pad are located on the down slope side of the bridge and outside of the wetlands limits.
Waterbod Information
Surface Water Body (1): Northeast Cape Fear River NCDWR Stream Index No.: 18-74-(1)
NCDWR Surface Water Classification for Water Body Primary Classification: Class C
Su lemental Classification: Swam Waters (Sw)
Other Stream Ciassification: None
Impairments: None
Aquatic T&E Species? No Comments:
NRTR Stream ID: N/A Buffer Rules in Effect: N/A
Project Inciudes Bridge S anning Water Bod ? Yes Deck Drains Discharge Over Buffer? No Dissi ator Pads Provided in Buffer? No
Deck Drains Discharge Over Water Body? No (If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the
(If yes, provide justification in the General Project Narrative) General Project Narrative)

\�� , North Carolina De artment of Trans ortation �
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Stortnwater � i
<,.,.,,.,, Highway Stormwater Program ��
STORMWATER MANAGEMENT PLAN —
(Version 2.07; Released October 2016) FOR NCDOT PROJECTS
WBS Element: SF-300325 TIP No.: 176P.3.R.76 Count (ies): Du lin Pa e of 1
Swales
Station & Coordinates Surface Base Front Back Drainage Recommended Actual Longitudinal Rock BMP
Sheet (Road and Non Road Water Width Slope Slope Area Treatm't Length Length Slope Q2 V2 Q10 V10 Checks Associated w!
No. Pro'ects Bod it H:1 H:7 ac ft ft % cfs f s cfs f s Used Buffer Rules?
-L- 14+78 RT (1)Northeast 0.0 3.0 3.0 1.0 104 127 0.50% 1.8 1.4 2.8 1.5 No No
-L- 16+05 RT Cape Fear
-L- 16+20 LT (1)Northeast 0.0 3.0 3.0 7.0 700 130 2.01 % 12.1 3.8 15.6 4.0 No No
-L- 17+50 LT Cape Fear
-L- 17+50 LT (1)Northeast 0.0 3.0 3.0 6.9 693 150 128% 11.9 3.2 15.5 3.4 No No
-L- 19+00 LT Cape Fear
Additional Comments