_External_ RE_ U-2579AB permit site 8 pipe perch

Carpenter, Kristi
From: Brumagin, Stephen A (Steve) CIV USARMY CESAW (USA)
<[e-mail]>
Sent: Tuesday, February 20, 2024 10:40 AM
To: Euliss, Amy
Cc: Conchilla, Ryan
Subject: [External] RE: U-2579AB permit site 8 pipe perch
Attachments: PSH 10B - Site 08 Plunge Pool addition.pdf
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Amy,
Sorry for the delay. I agree that the situation for U-2579AB Site # 8 is like the U-2579AB Site #19 that was
discussed/approved in November of last year. For the modifications you are proposing at Site #8, 1 would not require a
permit modification due to the minor alteration in the area authorized for impact below the culvert that will not change
impact nor result in a loss of waters. I agree that incorporation of Ryans comments related to the placement of rock and
geotextile (Detail EEE) should occur during the construction of the energy dissipator basin. And if possible, creation of a
low flow channel at the transition from the basin apron to natural stream may provide an opportunity for unrestricted
flow during low flow conditions. Please let me know if you have any questions. Thanks.
Stephen A. Brumagin
NCDOT Project Manager
U.S. Army Corps of Engineers,
Charlotte Field Office, Wilmington District
Work cell 704 798-6471
From: Euliss, Amy <[e-mail]>
Sent: Friday, February 16, 2024 9:19 AM
To: Brumagin, Stephen A (Steve) CIV USARMY CESAW (USA) <[e-mail]>
Subject: [Non-DoD Source] FW: U-2579AB permit site 8 pipe perch
Below is DWR's response. I know you are out today. Can you get us a response early next week?
Amy Euliss
Division 9 PDEA Engineer
North Carolina Department of Transportation
336 747 7802 office
aeuliss ncdot.gov
375 Silas Creek Parkway
Winston Salem, NC 27127-7167

From: Conchilla, Ryan <[e-mail]>
Sent: Thursday, February 15, 2024 4:28 PM
To: Euliss, Amy <[e-mail]>
Subject: RE: U-2579AB permit site 8 pipe perch
Amy,
Based on the conditions presented, I'm in agreement with the plunge pool changes and stabilization efforts proposed
near the culvert outlet. As noted in the Detail EEE, geofabric should be anchored to the stream banks with additional
rip -rap pressed -in as needed.
Thanks for the opportunity to review.
Ryan Conchilla, PWS
Environmental Specialist II
401 and Buffer Transportation Permitting Branch
North Carolina Department of Environmental Quality
919-707-9111 office
[e-mail]
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Department of Environmental Duality
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Carolina Public Records Law and may be disclosed to third parties.
From: Euliss, Amy <[e-mail]>
Sent: Friday, February 9, 2024 3:24 PM
To: Brumagin, Stephen A (Steve) CIV USARMY CESAW (USA) <[e-mail]>; Conchilla, Ryan
<[e-mail]>
Cc: Sawicki (Gannett Fleming), Jeremy P <[e-mail]>; Trantham, Darren K <[e-mail]>;
Shaver, Larry B <[e-mail]>; James Meachum <[e-mail]>
Subject: U-2579AB permit site 8 pipe perch
Steve and Ryan,
On U-2579AB-permit site 8, we have very similar situation to what was encountered at Site 19 (see attached email
chains for reference, one email from the USACE and another from DWR). The origin of the stream was taken by the pipe
impacts, which was also the scenario at site 19. So aquatic passage in the pipe system should not be a concern.
When installing the pipe system, several springs were found forcing us to use foundation conditioning material for
bedding this drainage system in order to stabilize it. The stone that was installed is now acting as an underdrain to the
system that is relieving itself at the outlet end of the system. We've found that trying to establish any native material at

or around the outlet of the pipe simply can't be maintained. In lieu of proposing lining the stream bed with stone
triggering a permit modification and mitigation, we're hoping the installation of a plunge pool at this location would
allow us to avoid the modification, and resolve the issue of the perched pipe, similar to last time. Attached is a revised
plan sheet for the site along with a current picture showing the perched outlet.
Please review and advise if you have any questions. They are actively working in the area. It would be helpful if you
could provide a response before the end of next week (2.16). Thanks in advance!
Amy Euliss
Division 9 PDEA Engineer
North Carolina Department of Transportation
336 747 7802 office
aeuliss ncdot.gov
375 Silas Creek Parkway
Winston Salem, NC 27127-7167
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 address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.