20120240 Ver 7_R-2303E Site 2_20200514 (2)

Strickland, Bev
From: Shaver, Brad E CIV USARMY CESAW (USA) <[e-mail]>
Sent: Thursday, May 14, 2020 3:23 PM
To: Herndon, T. Mason; Steenhuis, Joanne
Subject: [External] RE: R-2303E Site 2
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Yes the Corps agrees with this summary and approach.
Thanks,
Brad
From: Herndon,T. Mason <[e-mail]>
Sent:Thursday, May 14, 2020 10:10 AM
To: Shaver, Brad E CIV USARMY CESAW (USA) <[e-mail]>; Steenhuis,Joanne
<[e-mail]>
Subject: [Non-DoD Source] R-2303E Site 2
As a follow up to our field review yesterday and phone conversations today. The Division is proposing the following
measures at Site 2 on R-2303E to release flow into the new stream channel and stabilize the stormwater outfall ditches
that discharge into the new stream.
• Prior to releasing the stream flow into the new stream channel that was cut in uplands,the contractor will seed
the area with a riparian native seed mixture, however with the amount of groundwater expressing into and
flowing in the new channel, establishment of vegetation will be difficult and limited. Therefore,the
Department will place a series of wattles on coir fiber matting throughout the channel to prevent offsite
sedimentation and turbidity. This will allow the stream to develop it own thalweg and naturalize on it
own. Supplemental seeding will be done, if warranted.
• Construction of the stormwater ditches that discharge into the stream has begun and the contractor is
encountering the same expression of ground water and sloughing that was observed in the construction of the
stream channel. Therefore,the Department is proposing to rip rap these stormwater outfall to stabilize these
outfall and prevent sediment discharges into the stream channel. The rip rap will be pressed into the soft
material, so the flows will be on the surface of the ditch channel with the rip rap providing a rough and stabile
surface. If pressing the rip rap into the soil does not produce the desired results, additional material will be
place over and pressed into the rip rap to achieve the desired outcome.
Please let me know if this is an accurate record of our discussions and/or if you have any additional comments or
suggestions.
Thank you!
Mason Herndon
Environmental Program Supervisor
Division 3
NCDOT- Division of Highways
910-341-2036 office
1

910-604-0050 mobile
[e-mail]
5501 Barbados Blvd
Castle Hayne, NC 28429
i "A
x�
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.
2