20140762 Ver 5_Pre-formed scour hole modification request on R-2915 B_20201016

Wanucha, Dave
From:Hining, Kevin J
Sent:Tuesday, October 13, 2020 9:54 AM
To:Beckwith, Loretta A CIV USARMY CESAW (USA); Wanucha, Dave
Subject:RE: Pre-formed scour hole modification request on R-2915 B
Lori and Dave,

One quick clarification – the proposed ditch will be rocked at the inlet side where the PSH is currently located – this will
help dissipate and turn the stormwater exiting the slope drain pipe. However, we will use coir fiber and seed the rest of
the ditch. My previous email suggested the entire ditch would be rock lined, but I think we will be fine using coir fiber
matting and vegetation on the majority of it (it’s not that steep, < 3%). I assumed that would be preferable to rock lining
it, and might allow the ditch to create some wetland like habitat within it.

Thanks,

Kevin

From: Hining, Kevin J
Sent: Monday, October 12, 2020 5:33 PM
To: Beckwith, Loretta A CIV USARMY CESAW (USA) <[e-mail]>; Wanucha, Dave
<[e-mail]>
Subject: Pre-formed scour hole modification request on R-2915 B, HWY 221 Ashe County

Lori and Dave,

Hope all is well!

I have a pre-formed scour hole question / modification request on R-2915 B section, in Ashe County. Following the
plans, we have constructed a preformed scour hole that is working well. However, it has resulted in very wet
conditions/standing water beyond our RW, in a farmers field. Prior to the construction of the preformed scour hole, the
landowner used to cut hay from the field, but can no longer do anything to it because it stays wet. He has asked us if we
can help dry his field out like it was before.

As a result, we are seeking permission to replace the pre-formed scour hole with a rock lined ditch that will take the
stormwater directly to a small channelized stream / wet ditch beside the field. Attached is a plan sheet showing the
location (Stat 182 +70 Lt) and the proposed change, as well as a detail of the proposed rock lined ditch (second page).

I think the landowner is going to put a ditch in if we do not, but allowing us to do the work will likely cut down on
potential sediment impacts (my guess is the landowner would just cut a ditch and not line it with anything), and allowing
us to do the work will also help maintain good relations between NCDOT and the landowner. He has been working with
us to maintain a linear wetland on the border of our RW and his property, just south of this location (Stat 180 to
175). The modification should only alter how we are handling stormwater at the location, and shouldn’t impact any
jurisdictional features.

Thanks for reviewing this request and please let me know if you need additional information.

Kevin
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Kevin Hining
Division 11 Environmental Officer
North Carolina Department of Transportation

828-386-7202 cell
[e-mail]

801 Statesville Rd.
PO Box 250
North Wilkesboro, NC 28659

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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.
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