20080886 Ver 1_Other Agency Comments_20080630

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STATE OF NORTH CAROLINA
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DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY DIVISION OF HIGHWAYS LYNDO TIPPETT
GOVERNOR SECRETARY
June 24, 2008
NCDENR/DWQ
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115
SUBJECT: Proposed Pipe Replacement on SR 2173 (James Farm Road) in Iredell County
Dear Ms. Sullins:
Pursuant to your certified letter dated June 23, 2008, the North Carolina Department of Transportation submits a
revised sketch depicting the proposed impacts associated with the pipe replacement on SR 2173. The proposed pipe
will be shifted to better align with the existing active stream channel. This shift in pipe alignment will still direct the
pipe outlet discharge to a small vegetated bench in the active channel; therefore, it will be necessary to remove a 5-
10 foot bench and reconstruct it along the opposite bank. A reference cross-section was surveyed -60 feet
downstream to determine the "normal" stream width (3 feet). The stream channel at the pipe outlet will be
constructed to maintain this surveyed width.
I have enclosed revised sketches for the proposed project. NCDOT requests that the permit application be
considered complete at this time. If you have any questions or concerns, please feel free to contact me at (704) 480-
9044. Thank you for your time and consideration to this matter.
Respectfully yours,
M.L. Holder, P.E.
Division Engineer
Twelfth Division
BY: ?? /Z'-L?'
Trish Simon
Division 12 Environmental Supervisor
Enclosures
Cc: Steve Lund, US Army Corp of Engineers, Asheville Field Office
Sonia Gregory, DWQ Central Regional Office
I Notes Inlet end of the existing pipe has 0.40' of streambed material
and the outlet end has 0.50' of streambed material
95'
94' Of?? of
1 O
91'
90' 84. 1'75.9' 66.3'
54.8' 36.
43. 1'
Prop 96' CWP
Ex 72' GuP ?
RD
Pli h 9) a h 95'
•
f ?? ory off,' o? ?
-
-- i 9
3
--
----- - 92
,
0, 3j; 44. 9' 54. 1 ' 61, 9' 72.4' 82.4' 92.7 90,

Ex Pipe Inv 36.8'

\ 41' 9.
- Prop Pipe Inv
Ex Pipe Gradient Ex Streambed Gradient
92.5' 92.5'
-92.2, -92.5'
0 3/60' • 0 5% 0. 0'/47.8' • (7%%
Ex Streambed Gradient
93.11
-92.5'
0. 6'/ 55. 1 ' .1. (r/.
106'
104'-
102'-
1001-
94'-
92
' 90'
106'-
104'-
102'-
100,
98'
96'-
94'-
90,
Reference Cross Section
1061- Approx. 60' Downstream
(Looking Downstream)
104'
102'
1001Ex. Flood Bench
2.9'
94
94'
92'
90'
0' 4' 8' 12'14'18'
12th Div NCDOT
Bridge Maintenance
Non-NBIS * 48-2612
SR 2173
James Farm Rd
Iredell Co NC
5/08 FB B-2 Scale 1'=20'
Prop Pipe Gradient
91, 5'
-91, 4'
- 0. 1'/70' * 0. 1%
Stream Profile
6' 1 1 ' 12' 7' 21'
CL

RD I
Cross° Section
(Perpendicular to Roadway)
5/08
Inlet end of the Proposed Pipe to be place
Q the same location as the existing Pipe
Existing 72' CIuP with inlet
Headwall and approx. 60' long
Unnamed Tributary
to Fourth Creek
Notes=
1) Pumping system to be used to
divert the stream around the
construction site as needed.
2) Any contaminated water within
the construction site is to be
pumped into a silt bag
3) Silt fence to be placed around
stock pile and project as it allows
4) Upon completion of the project all
silt fences are to be placed as
needed. Also seeding and mulching
of disturbed areas

LL
W
N
Plan
TBiVI in Existing P Pole
Assume Elev. 100.0'
Proposed 96' CAP 70' Long
with a Conic headwall
on the inlet end
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Proposed Rip Rap or Shot
Rock a all Four Corners
Shift the Proposed Pipe approximately 3' at the
end of the Existing Pipe for the new alignment
p