20180482 Ver 1_Cover Letter_20180405

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
ROY COOPER
GOVERNOR
Apri14, 2018
Mr. Steve Kichefski/Ms. Nicholle Braspennicl�
Asheville Regulatory Field Office
US Army Corp of Engineers
151 Patton Avenue
Asheville, NC 28801-5006
7AMES H. TROGDON, III
SECRETARY
SUBJECT: Stream stabilization project, I-77 north bound lane, Iredell County
(Courtesy copy)
Dear Mr. Kichefski/Ms. Braspennicl�:
The North Carolina Department of Transportation (NCDOT) proposes to stabilize a failing
concrete ditched stream along I-77 north bound lane at exit 33 in Iredell County. The concrete
ditched stream has failed in multiple locations and is causing banks to become unstable. NCDOT
proposes to remove the failed concrete ditch for approximately 129 feet and replace it with
embedded riprap. There will be no new permanent impacts, however, approximately 40 feet of
temporary impacts will be needed for dewatering construction site. The temporary impacts will be
to an unnamed tributary to the Catawba River (Lake Norman) which is classified as WS-IV; Class
B waters by the Division of Water Resources. A temporary cofferdam pumping system will be
used to divert the stream around the construction site as needed. Area affected by temporary
cofferdam system will be graded and restored back to pre-project conditions. All Best
Management Practice's will be utilized during the course of the project.
*Note* There will be no disturbance in the Protected Riparian Buffer of the Catawba River.
The Division 12 Environmental Office conducted a threatened/endangered species survey (attached
T/E memo) on February 28, 2018 for the project location and surrounding area. The federally
listed species for Iredell County (USFWS listed date Apri128, 2017) include:
Bog Turtle (Glyptemys muhlenbergii )— Threatened due to similarity of appearance
Biological Conclusion — Not Required
Dwarf-Flowered Heartleaf (Hexastylis naniflora)- Threatened
Biological Conclusion — No Effect
Northern Long-Eared Bat (Myotis septentrionalis)-Threatened.
Biological Conclusion — May Affect; Not Likely to Adversely Affect
There are no sites listed on the National Register of Historic Places are located in the vicinity of the
project nor did there appear to be any eligible structures.

I-77 NB, Exit 33
Apri14, 2018
Page 2
I have enclosed a courtesy pre-construction notification for a NW#3, plan sheets, location maps,
and other relevant documentation relative to the project.
If you have any questions or concerns please feel free to contact me at [phone]. Thank you
for your time and consideration on this matter.
Sincerely,
Mark Stafford, P.E.
Division Engineer
Twelfth Division
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Trish Beam
Division 12 Environmental Supervisor
Enclosures