20220220 Ver 1_Brunswick Pines (DWR2022-0220 & SAW-2021-02108)_20220331

From: Snider, Holley
To: Williams, Kimberlee
Cc: Beecher, Gary H CIV USARMY CESAW (USA); Brown, Creighton A
Subject: Brunswick Pines (DWR2022-0220 & SAW-2021-02108)
Date: Thursday, March 31, 2022 4:03:00 PM
Good afternoon Kim,
The ePCN application for the Brunswick Pines development in Shallotte, Brunswick County lacks the
information necessary to complete the review. The drawings contained in the ePCN application
submitted on 2/7/2022 to the DWR and USACE do not contain cross section drawings for the
crossings and the information necessary to ensure compliance with the conditions of the WQC and
corresponding NW permit from the USACE.
The submitted drawings include only notes for each crossing that state "proposed culvert size and
type to be determined", which is insufficient to determine that the project will comply with the
following condition:
"Culverts shall be designed and installed in such a manner that the original stream
profiles are not altered and allow for aquatic life movement during low flows. The
dimension, pattern, and profile of the stream above and below a pipe or culvert shall
not be modified by widening the stream channel or by reducing the depth of the
stream in connection with the construction activity. The width, height, and gradient of
a proposed culvert shall be such as to pass the average historical low flow and spring
flow without adversely altering flow velocity. If the width of the culvert is wider than
the stream channel, the culvert shall include multiple boxes/pipes, baffles, benches
and/or sills to maintain the natural width of the stream channel. If multiple
culverts/pipes/barrels are used, low flows shall be accommodated in one culvert/pipe
and additional culverts/pipes shall be installed such that they receive only flows above
bankfull."
"Placement of culverts and other structures in streams shall be below the elevation of
the streambed by one foot for all culverts with a diameter greater than 48 inches, and
20% of the culvert diameter for culverts having a diameter less than or equal to 48
inches, to allowlow flow passage of water and aquatic life. If the culvert outlet is
submerged within a pool or scour hole and designed to provide for aquatic passage,
then culvert burial into the streambed is not required."
The "typical cross section view" depicts rip rap aprons at the downstream (and some upstream) pipe
inverts. The typical cross section drawing shows permanent impacts outside of the right of way and
beyond the proposed retaining wall that would provide slope stabilization. Please provide other
cross section drawings depicting the dimensions of the fill slope outside the R/W, retaining walls and
rip rap aprons to determine if minimization has been considered.
Additional cross section drawings for each crossing depicting the proposed wetland fill, retaining
walls and pipes must be submitted for review.

Please account for any temporary impacts associated with utility line construction.
The application is on hold until a response to this request for additional information has been
received by our office. A copy of the DWR Water Quality Certification 4256 has been attached to
assist in your completion of the request for additional information. Please feel free to call or email
me if you have any questions or need my assistance in any way.
Sincerely,
Holley Snider .• • ,><((((°>•' '•.,,..><((((°>..'-
Environmental Specialist II
Division of Water Resources
North Carolina Department of Environmental Quality
Phone: [phone]
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Nprn. CANXINA.
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127 Cardinal Drive Ext.
Wilmington, NC 28405
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