20081808 Ver 2_Application_20100616

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
BEVERLY EAVES PERDUE
GOVERNOR
U. S. Army Corps of Engineers
Regulatory Field Office
Post Office Box 1000
Washington, NC 27889-1000
ATTENTION: Mr. Tom Steffens
NCDOT Coordinator
Dear Sir:
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EUGENE A. CONTTI, *01
SECRETARY
Off- ??08 ?Z
Subject: Modification Request for the Nationwide 14 Permit and Water Quality
Certification for Improvements to US 17 from Mills Street in Bridgeton to
Norfolk & Southern Railroad, Craven County. State Project: 8.117601. Federal
Aid Project: STPNHF-17(24). TIP: R-3403AA. Debit $570.00 from
WBS 34538.1.1
Reference: USACE Nationwide Permit 14 dated January 29, 2009, Action ID SAW 2009-
00217. NCDWQ Water Quality Certification and Tar-Pamlico Buffer
Authorization dated January 12, 2009, WQC No. 20081808vl.
The purpose of this letter is to request modifications to the Clean Water Act (CWA) Section 404
Permit issued by the USACE and the Water Quality Certification issued by the NCDWQ. This
project is due to let on September 21, 2010. The North Carolina Department of Transportation
(NCDOT) is proposing the following modifications:
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• The addition of curb and gutter results in a decrease of 0,,I-f acre of wetland impacts.
A revised EEP acceptance letter will follow this request.
Regulatory Approvals
The NCDOT respectfully requests that the referenced 404 USACE Permit and 401 Water Quality
Certification be modified to reflect the revision to the project's plan sheets as outlined in this
letter. We are providing five copies of this permit modification request to the North Carolina
Department of Environment and Natural Resources, Division of Water Quality for their review
and approval.
MAILING ADDRESS:
NC DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS
1598 MAIL SERVICE CENTER
RALEIGH NC 27699-1598
June 15, 2010
TELEPHONE: [phone]
FAX: [phone]
NEBSITE: WWW.NCDOT.ORG
LOCATION:
ENVIRONMENTAL RESOURCES CENTER
4701 ATIANTiCAVENUE, STE. 116
RALEIGH, NC 27604
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Enclosed ,are copies of the revised permit drawings and impact summary depicting the proposed
modifications.
A / copy, ;of ?'this modification request will be posted on the NCDOT website at:
•" V Lam.-.// ?? _? . _I?_I_I _ __ _?. _?l. _ l' _ / t t
If you have any questions or need additional information, please contact Chris Underwood at
[phone].
Sincerely,
Gregory J. Thorpe, Ph.D., Environmental Management Director
Project Development and Environmental Analysis
W/attachment:
Mr. Brian Wrenn, NCDWQ (5 copies)
W/o attachment
Dr. David Chang, P.E., Hydraulics
Mr. Greg Perfetti, P.E., Structure Design
Mr. Victor Barbour, P.E., Project Services Unit
Mr. Mark Staley, Roadside Environmental
Mr. C. E. Lassiter, P.E., Div. 2 Engineer
Mr. Jay Johnson, Div. 2 Environmental Officer
Mr. Scott McLendon, USACE, Wilmington
Mr. Steve Sollod, NCDCM
Mr. Gary Jordan, USFWS
Mr. Travis Wilson, NCWRC
Mr. Ron Sechler, NMFS
Ms. Anne Deaton, NCDMF
Mr. Jay Bennett, P.E.; Roadway Design
Mr. Majed Alghandour, P. E., Programming and TIP
Mr. Art McMillan, P.E., Highway Design
Ms. Beth Harmon, EEP
Mr. Phillip Ayscue, NCDOT External Audit Branch
Mr. Brian Yamamoto, P.E., PDEA
2
STORMWATER MANAGEMENT PLAN
Project: 34538.3.5
TIP: R-3403AA
County: Craven
6/7/10
Hydraulics Project Engineers: W. Henry Wells, Jr., PE and William M. Hines, Jr., P.E.
(Sungate Design Group); Anne Gamber, P.E. (NCDOT
Hydraulics Unit)
ROADWAY DESCRIPTION
The project involves the widening of US 17, located in Bridgeton, New Hanover County,
from Mills Street to Norfolk and Southern Railroad. The overall length of the project is
approximately 0.63 miles. The existing roadway is a predominately 28-foot wide
roadway with two 12-foot wide lanes and 2-foot paved shoulders. With Project R-3403A,
it is proposed to widen US 17 to a four-lane, shoulder section roadway with a narrow
grass median. Concrete curbing is proposed along both sides of the roadway between -L-
Station 18+50 and 50+90 (0.61 miles). Curb cuts along the concrete curbing will allow
the stormwater to flow into the roadside ditches. The project drainage system consists of
cross pipes, grated inlets and associated pipe systems, and side and lateral ditches and
swales.
ENVIRONMENTAL DESCRIPTION
The project is located in the Neuse River Basin. There are two wetland sites that will be
impacted by the proposed project. Wetland impacts have been kept to a minimum as
much as practicable. There are no jurisdictional streams on this section of the project.
BEST MANAGEMENT PRACTICES AND MAJOR STRUCTURES
The primary goal of Best Management Practices (BMPs) is to prevent degradation of the
states surface waters as a result of the location, construction and operation of the highway
system. BMPs are activities, practices and procedures taken to prevent or reduce
stormwater pollution. The BMPs and measures that will be used on this project to reduce
stormwater impacts are grassed swales and raised drive-pipes in ditch lines.
GRASSED SWALES AND RAISED DRIVE-PIPES
Grassed swales are proposed along the majority of the project. These ditches will
have a maximum 3: t side slope and a relatively flat grade. In addition, the
grassed swales along the side of the roadway will be used for stormwater storage
and encourage infiltration by raising the drive-pipes 3-inches above the ditch line.
The wetland at site 1 will be partially filled by proposed curbing for a roadside
ditch and a driveway entrance. No new stormwater will be entering the wetland at
site 1.
The wetland at site 2 will receive stormwater from median inlets at station 28+50-
L-, 32+13-L- and a roadside grassed Swale. Stormwater entering the median inlets
is treated by grassed swales from station 27+00 to 29+50 -L- and from station
31+47 to 32+13 -L-. The roadside grassed Swale is treating stormwater from
station 27+09 to 32+13 -L- RT. As shown in the attached calculations, all 2yr
velocities in the grassed swales are under 2ft/s. Although the velocity of
stormwater exiting the system into the wetland during the I Oyr design storm is
2.8ft/s, class `B' rip rap will be placed at the pipe outlet to dissipate flow.
Further, the I Oyr velocity in the roadside grassed swale is 1.8ft/s, meeting criteria
for diffuse flow into the wetland.
MINIMIZATION OF IMPACTS
Several design elements provided for minimization of wetland impacts. Grassed swales
along with raised drive-pipes will promote infiltration and treat storm water before it .
enters the wetland.
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PROPERTY OWNERS
NAMES AND ADDRESSES
PARCEL NO.
NAMES ADDRESSES
WARD, MARTHA S. P.O. BOX 1428
8 AND WILLIAM F. JR NEW BERN, NC 28563
1540 OCEAN AVE. UNIT 22
19 DONOFRIO, CARMEN V RUMSON, NJ 07700
]HARBORSIDE 17 2404 N. RIO GRANDE AVE.
PARTNERS LLC ORLANDO, FL 32804
WETLAND/STREAM
IMPACTS
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