20140764 Ver 1_Corps of Engineer Correspondence_20170412

Wanucha, Dave
From:Bailey, David E CIV USARMY CESAW (US) <[e-mail]>
Sent:Wednesday, April 12, 2017 8:31 AM
To:Thomson, Nicole J
Cc:Parker, Jerry A; Wanucha, Dave
Subject:RE: Shatterly Rd Bridge 229,
Hi Nikki, and sorry for the late response. I reviewed the information you sent as well as our previous correspondence on the
issue. I doesn't appear that the new proposed fix would impact waters of the US. Given that the primary regulatory issue seems
to be buffer-related, I will defer to Dave W. on this one. If you have any questions or feel otherwise please let me know.
-Dave Bailey

---
David E. Bailey, PWS
Regulatory Project Manager
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Phone: [phone], Ext. 30.
Fax: [phone]
Email: [e-mail]

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-----Original Message-----
From: Thomson, Nicole J \[mailto:[e-mail]\]
Sent: Monday, April 10, 2017 9:42 AM
To: Wanucha, Dave <[e-mail]>; Bailey, David E CIV USARMY CESAW (US) <[e-mail]>
Cc: Parker, Jerry A <[e-mail]>
Subject: \[Non-DoD Source\] 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?

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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 coordinated.

From: Harper, Aaron A
Sent: Friday, April 07, 2017 12:45 PM
To: Kirkman, Christopher D <[e-mail]>; Fine, Lowell C <[e-mail]>; [e-mail];
Thomson, Nicole J <[e-mail]>
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
EB1 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 EB1 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 line is the approximate 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 would be beneficial to meet on site to discuss further.

Much Thanks

Aaron Harper

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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 7th Street

Sanford, NC 27330

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.

________________________________

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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