20240303-OnHold

DocuSign Envelope ID: E9276480-EE57-403E-9B21-D10D95F2632B
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
DWR # 20240303
Wilkes County
Kevin Hining, Environmental Supervisor
NCDOT Division 11
PO Box 250
North Wilkesboro, NC 28659
NORTH CAROLINA
Environmental Quality
March 1, 2024
Subject: REQUEST FOR ADDITIONAL INFORMATION
NCDOT TIP# R-5759: NC 115 Widening, Wilkes County
Dear Mr. Hining:
On February 23, 2024, the Division of Water Resources (Division) received your application requesting a 401 Water
Quality Certification from the Division for the subject project. The Division has determined that your application is
in need of additional information in order to complete processing. The application is on Hold, until all of the
following information is received:
1. For linear transportation projects, NC DWR requires mitigation for permanent impacts to a perennial
stream that equals to 300 linear feet or more. Stream SG (Sites 4 and 5) has permanent impacts that meet
that threshold. Therefore, DWR requires a mitigation plan or coverage by the Division of Mitigation
Services (DMS) for those impacts.
2. Site 4 Outlet: The pipe outlet at this site enters the stream at an extremely sharp angle. DWR has concerns
about the velocity causing instability of the channel at this outlet. Has the NCDOT considered the
possibility of using a junction box and pipe stub, in order to reach the channel at a more gradual angle, in
order to assure a more stable flow? If not, does the NCDOT have calculations to show that the riprap outlet
as proposed is enough to handle both the velocity and volume of this pipe outlet? The Division is
concerned that the significant drainage area, strormwater plus flows of two perennial streams into this pipe
system combined may be higher than the outlet protection can handle.
3. Site 4 Inlet: The stream at this site hits a sharp curve immediately before entering the pipe system. Has
NCDOT considered adding bank stabilization to the curve at the inlet, in order to ensure stability here?
4. The permit plans set do not include the standard NCDOT Stormwater Management Plan (SMP). Please
provide a copy of the SMP for our review.
Pursuant to Title 15A NCAC 02H .0502(e), the applicant shall furnish all of the above requested information for the
proper consideration of the application. Please respond in writing within 30 calendar days of receipt of this letter by
sending the above requested information to the Transportation Permitting Branch, by submitting all of the above
requested information through this link: hgps:Hedocs.deq.nc.aov/Forms/Supplemental-Information-Form (note the
DWR# requested on the link is referenced above).
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CARCLINA
919.707.9000

DocuSign Envelope ID: E9276480-EE57-403E-9B21-D10D95F2632B
If all of the requested information is not received within 30 calendar days of receipt of this letter, the Division will
be unable to approve the application and it will be denied as incomplete. The denial of this project will necessitate
reapplication to the Division for approval, including a complete application package and the appropriate fee.
Please be aware that you have no authorization under the Section 401 of the Clean Water Act for this activity and
any work done within waters of the state may be a violation of North Carolina General Statutes and Administrative
Code.
Please contact Rob Ridings at 919-707-8786 or [e-mail] if you have any questions or concerns.
Sincerely,
Docuftned by:
9C9886312DCD474...
Amy Chapman, Supervisor
Transportation 401 & Buffer Permitting Branch
cc:
Lori Beckwith, USACE Asheville Regulatory Field Office
File copy
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
onparhnem of EmironmanW 9uallly