20140764 Ver 1_Pictures_20170413

Carpenter,Kristi
From: Wanucha, Dave <[e-mail]>
Sent: Thursday, April 13, 2017 2:04 PM
To: Thomson, Nicole J
Subject: RE: Shatterly Rd Bridge 229,
Attachments: 20170413_135104_resized jpg
Looking good so far!
Dave Wanucha
NCDEQ Winston Salem
Regional Office
450 West Hanes Mill Rd.
Suite 300
Winston Salem, NC 27105
336-403-5655
Smartphone
-------- Original message --------
From: "Thomson, Nicole J"
Date:04/10/2017 9:42 AM (GMT-05:00)
To: "Wanucha, Dave" , "'[e-mail]"'
Cc: "Parker, Jerry A"
Subject: FW: Shatterly Rd Bridge 229,
Good morning gentlemen!
As you may recall, the above bridge replacement has given us some issues with
respect to drainage. I previously sent an email with a proposed work around
intended to address the storm drainage in a manner consistent with existing BMPs
and the buffer rules. As you can see from the attached pictures, it's not
working. Now this is from a heavy rainfall last week, however, even with a
moderate rainfall, the grades are working against us and the drainage isn't going
where we need it to.
After coordinating with Aaron Harper (REU), he has devised the attached plan
(see the above 2 sketches and his email explanation below).
Is this something that you could/would be ok with?

Thank you very much —
Nikki
PS if we need to meet on site, I'm game. Just flip me some available dates and
we'll get it coardinated.
From: Harper, Aaron A
Sent: Friday, Apri107, 2017 12:45 PM
To: Kirkman, Christopher D<[e-mail]>; Fine, Lowell C
<[e-mail]>; [e-mail]; Thomson, Nicole J
<nj thomson2 @ncdot. gov>
Subject: Shetterly Rd Bridge 229
All,
I reviewed the project this morning with Don and Billy. It was noted that minor
washing occurred parallel to the rip rap vicinity EB 1 Lt from the recent 0.9 inch
rainfall event. Billy indicated this rainfall took place in approximately 1 hour. It
is my opinion that flow from the driveway pipe, storm drain pipe, and sheet flow
from the adjacent field was more than could be managed along the existing rip rap
toe protection. Excessive runoff ponded at the pipe outlets and then flowed along
the edge of the rip rap and around the wing. This has been a challenging area to
manage drainage while maintaining diffuse flow through the buffer. It is also my
opinion that over time, there would be risk of losing the integrity of the slope
protection around the wing wall if runoff continues to flow along the edge of the
rip rap toe protection.
Nikki, per our phone conversation, do you think Dave would be open to the
following: Grade from the pipe outlets to EB 1 and between the R/W and existing
toe protection to drain. Line this new swale with geotextile and rip rap. In a line
parallel with the EB, construct a rock check with Class 1 and Class B rip rap to
perform as a"level spreader" to provide diffuse flow.
In Sketch 1: The green shaded area is approximately existing rip rap. The red
outline is the footprint of proposed rip rap.

In Sketch 2: The red li��e is the approxi�nate location of the proposed rock check
to perform as a level spreader. The green outline is the footprint of proposed rip
rap.
Please let me know if it wolild be bene�cial to meet on site to discuss further.
Much Thanks
Aaron Harper
Field Operations Engineer Div 7&8
NCDOT Roadside Environmental Unit
919 776 2279 office
919 777 3038 cell
[e-mail]
P.O. Box 429
1530 South 7'h Street
Sanford, NC 27330
M , 1 . Ij: ■ _b _
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.