20180542 Ver 1_Beaufort 249_hyd_permit_package (002)_20190801

North Carolina Department of Transportation .° °,
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
(Version 2.07; Released October 2016) 1 L FOR NCDOT PROJECTS
WBS Element: 17BP.2.R.85 TIP No.: County(ies): Beaufort Page 1 of 2
General Project Information
WBS Element:
17BP.2.R.85 ITIP Number: Project Type: Bridge Replacement Date: 6/28/2018
NCDOT Contact:
Robert T. Turnbull, Environmental Services, Inc.
Contractor / Desi ner:
I HNTB North Carolina, P.C. / James A. Byrd, PE
Address:
4901 Trademark Dr.
Raleigh, NC 27610
Address:
343 E. Six Forks Road
Suite 200
Raleigh, NC 27609
Phone:
919 212-1760
Phone:
919 424-0437
Email:
[e-mail]
Email:
jab rd hntb.com
City/Town:
Bath
Count ies :
Beaufort
River Basin(s):
Tar -Pamlico I
ICAMA County?
I Yes
Wetlands within Project Limits?
Yes
Project Description
Project Length (lin. miles or feet):
0.13 Surrounding Land Use: JRural Residential and Agriculture
Project Built -Upon Area ac.
Proposed Project
1.2 ac.
ExistingSite
0.5 ac.
Typical Cross Section Description:
2 - 10' asphalt paved lanes with 2' paved shoulders, 4' grass shoulders.
2 - 10' asphalt paved lanes with grass shoulders. Wetlands are present in all four
quadrants. CAMA wetlands are distinguished from 404 wetlands.
Annual Avg Daily Traffic (veh/hr/day):
Design/Future: 530 Year: 2011
Existing: 1060 Year: 2031
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
State project 17BP.2.R.85 involves the replacement of Beaufort County Bridge #060249 on SR 1336 (Hawkins Beach Rd.) over Duck Creek. The existing bridge consists
of 1 @ 17' - 10", 1 @ 17' - 1", and 1 @ 17' - 9" timber deck on timberjoists, steel caps, and timber piles. It is to be replaced with a 1 @ 30' - 0" and 1 @ 55' - 0" 21" cored slab
(85' total length, 33' total width) at the same location. To facilitate the construction of the proposed bridge, an onsite detour is proposed on the downstream side of SR 1336.
The project includes 0.110 miles of roadway improvements. In accordance with Tar -Pamlico River Buffer Regulations, the proposed bridge does not contain deck drains. All
stormwater from the bridge and approaches will be collected by a storm drainage system and discharged into the wetlands. The drainage system will outlet outside of the buffer
limits in the northeastern quadrant at -L- station 16+18 LT, with the outlet pipe set at 0.1 % to reduce velocity into the wetlands. A Class 'B' rip rap pad was specified at the
drainage outlet to lower discharge velocity and to minimize impacts. No defined roadside ditches exist that are impacted by the proposed slope stakes. Thus, all existing
drainage patterns are maintained in the proposed design.
Waterbody Information
Surface Water Body (1): Duck Creek
NCDWR Stream Index No.:
29-16-(2)
NCDWR Surface Water Classification for Water Body
Primary Classification:
Class SC
Supplemental Classification:
Nutrient Sensitive Waters (NSW)
Other Stream Classification:
Impairments:
Aquatic T&E Species?
Comments:
NRTR Stream ID:
Buffer Rules in Effect: Tar -Pamlico
Project Includes Bridge Spanning Water Body?
iYes
I Deck Drains Discharge Over Buffer? INo
Dissipator Pads Provided in Buffer? INo
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
General Project Narrative)
(If yes, provide justification in the General Project Narrative) I

I lip hWa North Carolina Department of Transportation
gSYOYIyY11 Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
(Version 2.07; Released October 2016) FOR NCDOT PROJECTS
WBS Element: 17BP.2.R.85 TIP No.: County(ies): Beaufort Page 2 of 2
Preformed Scour Holes and Energy Dissipators
Sheet
No.
Station & Coordinates
(Road and Non Road
Projects)
Surface
Energy Dissipater
Type
Riprap Type
Drainage
Area
ac
Conveyance
Structure
Pipe/Structure
Dimensions
(in)
Q10
(cfs)
V10
(fps)
BMP
Associated w/
Buffer Rules?
4
-L- Sta. 16+18 LT
(1)Duck
Creek
Riprap Energy
Dissipator Basin
Class'B'
0.1
Pipe
15
0.8
1.6
Yes
35.462992 /-76.854354
Additional Comments
Keter to the NUUU I best Management Practices I oOIboX (ZU14), NGDU I Standards, the Federal HlghWay Administration (FHWA) Hydraulic tnglneering circular No. 14 (Htc-14), I hlra taltlon, Hydraulic Uesign oT tnergy
Dissipators for Culverts and Channels (July 2006), as applicable, for design guidance and criteria.

STATE OF NORTH CARD INA
Te TATE PROJECT
8II88T TOTAL
REFERENCE NO. EE SXReM
.0 17. B
P.2 . R. 85
tn
DIVISION OF HI G IE WAYS
TR PRO .NO
P AFRO .NO. 089CR PT UN
00
17BP.2.R.85
PE
S
17BP.2.R.85
ROWiUTIL
1:y
~
�. &
BEA UFOR T COUNTY
(.11-3
4
S�
6
LOCATION: REPLACE BRIDGE NO.249 OVER DUCK CREEK
PERMIT DRAWING
SHEET 1 OF 14
o
ON SR 1336 (HA WKINS BEACH ROAD)
SR
3�
7358
TYPE OF WORK: GRADING, DRAINAGE, PAVING AND STRUCTURE
\GO
[T1
GOOSE
CREEK
Q
STATE PARK
WETLAND AND SURFACE WATER IMPACTS PERMIT
VICINITY MAP
NO
BEGIN PROJECT 17BP.2.R.85
—L— POC STA 13 + 85.00
4
BEGIN BRIDGE END BRIDGE
—L— POT STA 16 + 97 +/— MA WEiLpNP —L— POT 17 + 82 +/—
m
�m
s
5=1336_
KAI_ — TO PMILIC2 R
� eunA weTUNos ` � ��
a. wE uHcs —DET—
6
CM g� KINS _
��
END PRO ECT 17BP.2.R.85
—L— POC STA 20 + 50.00
NOTES:
1. CLEARING ON THIS PROJECT SHALL BE PERFORMED TO THE
LIMITS ESTABLISHED BY METHOD II.
2. THIS PROJECT IS NOT WITHIN ANY MUNICIPAL BOUNDARIES.
3. SEE SHEET 2B-1 FOR TEMPORARY DETOUR
DOCUMENT NOT CONSIDERED FINAL
UNLESS ALL SIGNATURESCONIPLETED
V
GRAPHIC SCALES
DESIGN DATA
PROJECT LENGTH
Prepared in the Office of:
HYDRAULICS ENGINEER
50 25 0 50 100
ADT 2011 = 530
ADT 2031 = 1060
343 E. Six Forks Roatl, Suite 200
G�INTB HNTB NORTH Forks NA, P.C.
Raleigh, North Carolina 27609
NC License No: C-1554
HURT
STANDARD SPECIFICATIONS
K = 10 %2072
PLANS
LENGTH OF ROADWAY PROJECT 17BP.2.R.85 = 0.110 MILES
D = 60 %
DOUGLAS WHEATLEY, PE
Ps.
SIGNATURE:
® a
50 25 0 50 100
T = 6 % *
LENGTH
OF STRUCTURE PROJECT 17BP.2.R.85 = 0.016 MILES
RIGHT OF WAY DATE:
PROJECT ENGINEER
V = 60 MPH
JANUARY 31, 2018
MONICA J. DUVAL
ROADWAY DESIGN
ENGINEER
e
PROFILE HORIZONTAL
PROJECT DESIGN ENGINEER
* TTST =2% DUAL 4%
TOTAL LENGTH OF PROJECT 17BP.2.R.85 = 0.126 MILES
O
O(HORIZONTAL)
10 5 0 10 20
FUNC CLASS =
LETTING DATE:
8R R�
V
LOCAL
AUGUST 8, 2018
HEATHER C. LANE PE
PROFILE (VERTICAL)
NCDOT CONTACT
SUB —REGIONAL TIER
SIGNATUREP.E.

v�

v�

WETLAND AND SURFACE WATER IMPACTS SUMMARY
WETLAND IMPACTS SURFACE WATER IMPACTS
Site
No.
Station
(From/To)
Structure
Size / Type
Permanent
Fill In
Wetlands
(ac)
Temp.
Fill In
Wetlands
(ac)
Excavation
in
Wetlands
(ac)
Mechanized
Clearing
in Wetlands
(ac)
Hand
Clearing
in
Wetlands
(ac)
Permanent
SW
impacts
(ac)
Temp.
SW
impacts
(ac)
Existing
Channel
Impacts
Permanent
(ft)
Existing
Channel
Impacts
Temp.
(ft)
Natural
Stream
Design
(ft)
1
-L- 16+63 to 19+03
21" Cored Slab Bridge
< 0.01
< 0.01
< 0.01
1
-L- 16+63 to 19+03
21" Cored Slab Bridge (CAMA)
0.02
< 0.01
< 0.01
1
-DET- 10+57 to 15+03
Temp. Bridge
0.05
0.01
1
-DET- 10+57 to 15+03
Temp. Bridge (CAMA)
0.04
TOTALS*:
0.02
0.09
< 0.01
0.00
< 0.01
< 0.01
0.01
0
0
T 0
*Rounded totals are sum of actual impacts
NOTES: Existing channel impacts are measured along the centerline of the stream.
Permanent Fill in Wetlands: 167 SF
Permanent Fill in Wetlands (CAMA): 888 SF
Temporary Fill in Wetlands: 2094 SF
Temporary Fill in Wetlands (CAMA): 1892 SF
Excavation in Wetlands: 68 SF
Excavation in Wetlands (CAMA): 39 SF
Hand Clearing in Wetlands (CAMA): 212 SF
Permanent Impacts in Surface Water: 12 SF
2016 os os Temporary Impacts in Surface Water: 531 SF

RIPARIAN BUFFER IMPACTS SUMMARY
IMPACT
BUFFER
REPLACEMENT
SITE NO.
STRUCTURE SIZE / TYPE
STATION (FROM/TO)
TYPE
ALLOWABLE
MITIGABLE
ROAD
CROSSING
BRIDGE
PARALLEL
IMPACT
ZONE 1
(ft2)
ZONE 2
(ft)
TOTAL
(ft)
ZONE 1
(ft)
ZONE 2
(ft)
TOTAL
(ftz)
ZONE 1
(ft)
ZONE 2
(ft)
B1
21" Cored Slab Bridge
-L- 17+73 to 18+26 LT
X
564
325
889
B2
21" Cored Slab Bridge
-L- 16+21 to 17+02 LT
X
595
271
866
B3
21" Cored Slab Bridge
-L- 15+11 to 16+88 RT
X
1043
160
1203
B4
21" Cored Slab Bridge
-L- 17+78 to 18+33 RT
X
202
155
357
B5
DETOUR BRIDGE
-L- 14+86 to 16+82 RT
X
3340
240
3580
B6
DETOUR BRIDGE
-L- 17+70 to 18+31 RT
X
1178
778
1956
TOTAL:
6922
1929
8851
0.0
0.0
0.0
0.0
0.0
Rev. SEP 2016

Jan 2009