RE_ M-0540A NC 24 Living Shoreline Project - marked up drawings

From:Sprinkle, Hannah H
To:Lane, Stephen; Westphal, Anneliese; Steffens, Thomas A CIV USARMY CESAW (USA)
Subject:RE: M-0540A NC 24 Living Shoreline Project - marked up drawings
Date:Monday, March 13, 2023 9:17:00 AM
Attachments:image001.png
Good morning Anneliese,

Thank you providing the update. I agree this altered plan is a good compromise and I’m happy
NCDOT is attempting to save a portion of the existing coastal wetlands.
I will add this information to the project file and as Stephen mentioned, please send out any
updated plans as they progress.

Thank you,

Hannah
From: Lane, Stephen <[e-mail]>
Sent: Friday, March 10, 2023 9:01 AM
To: Westphal, Anneliese <[e-mail]>; Sprinkle, Hannah H
<[e-mail]>; Steffens, Thomas A CIV USARMY CESAW (USA)
<[e-mail]>
Subject: RE: M-0540A NC 24 Living Shoreline Project - marked up drawings

Hi Anneliese, I agree that the proposed changes to the project coalesces our observations andcomments in the field and are a good way to preserve a considerable portion of the
existing coastal wetlands at the site while attempting to create proper slopes and
additional coastal wetlands behind the sills. We will need to formalize these proposed
changes as soon as the plans are solidified. Please keep me posted and feel free to
give me a call on my cell phone if you have any questions. Thanks,Stephen
From: Westphal, Anneliese <[e-mail]>
Sent: Thursday, March 09, 2023 5:35 PM
To: Sprinkle, Hannah H <[e-mail]>; Steffens, Thomas A CIV USARMY CESAW
(USA) <[e-mail]>; Lane, Stephen <[e-mail]>
Subject: M-0540A NC 24 Living Shoreline Project - marked up drawings

Hannah, Stephen, and Tom,
Please see attached the proposed changes that are being considered at the subject project.

Daniel Waugh marked-up this sheet after discussing the project with the design firm engineer
(Engineer of Record from SWCA) and Brian Lipscomb (NCDOT). The Engineer of Record had
concerns about saving all of the existing coastal wetlands due to the existing elevations. For the
survivability of the Spartina species (which will be planted), he believes the fill needs to be
established in the planting area at the planned elevations and that the existing marsh grasses that
are currently present are on the low side of that range.

I think this altered plan is a good compromise with attempting to save a portion of the existing
coastal wetlands while also hitting the planned elevations for the rest of the area. Also, Daniel
informed me that there will be a period of time, (a week or more) between when the fill is finished
being placed and before planting starts when we will have a chance to evaluate the fill elevations
and also (after several days of tidal cycles) determine if the fill really is being moved into a flatter
slope (and different elevation) than it was placed. At that time, additional fill could be placed if
needed.

Daniel also indicated that this plan may change slightly as they progress. We will try to let you know
quickly if that is anticipated and if we need changes.

Please let me know your thoughts.

Anneliese

Anneliese Westphal
Environmental Senior Specialist
Division 3
NCDOT- Division of Highways

910 341 2000 office
910 604 1330 mobile
910 675 0143 fax
[e-mail]

5501 Barbados Blvd
Castle Hayne, NC 28429-5647

Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.
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