20160804 Ver 2_More Info Received_20201106

Strickland, Bev
From: Hughes, Emily B CIV USARMY CESAW (USA) < [e-mail] >
Sent: Friday, November 6, 2020 7:34 AM
To: Mairs, Robb L; Govoni, Daniel
Subject: [External] FW: Spillway permit figures
Attachments: EI_Cell1_Spillway3_permit.png; EI_Cell1_Spillway1_permit.png; EI_Cell1_Spillway2
_permit.png
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Good Morning Robb and Daniel,
The Eagle Island PDT revisited the spillway locations for Eagle Island Cell 1 and would like to present the revised
preliminary drawings to you for your review:
Spillway 1 pipe was repositioned and extended to reach beyond MHW and daylight at the upper reaches of a small
slough that drains to the Brunswick River.
Spillway 2 pipe was extended to an existing pool in the marsh.
Spillway 3 pipe was repositioned and extended to reach beyond MHW and daylight at the upper reaches of a slough that
drains to the Brunswick River. I will ask the Engineer to reposition more towards 9 o'clock so the pipe daylights into
water, not marsh.
Once these are approved the engineer will finalize the plans and we can forward those to you. The hope is to have all 3
spillways in compliance with Water Quality Cert 4137 conditions and DCM citation 15A NCAC 07H.0208(b)(2) (D)
General Use Standards:
"Effluent from diked areas receiving disposal from hydraulic dredging operations shall be contained by pipe, trough, or
similar device to a point waterward of emergent vegetation or, where local conditions require, below normal low water
or normal water level."
Please understand that due to cost, we cannot extend the spillway structures all the way to the Brunswick River; and the
proposed locations are in line with existing spillways locations in Cells 2 and 3. Please feel free to call me if you have any
concerns.
Thanks,
Emily

From: Stello, Stephen M CIV USARMY CESAW (USA) <[e-mail]>
Sent: Thursday, November 5, 2020 4:05 PM
To: Heckendorf, Kurt A CIV USARMY CESAW (USA) <[e-mail]>; Hughes, Emily B CIV USARMY
CESAW (USA) <[e-mail]>
Subject: RE: Spillway permit figures
See adjusted figures
Thanks,
Stephen Stello, P.E.
Design and General Engineering Section
U.S. Army Corps of Engineers,
Wilmington District
910-251-4627
From: Heckendorf, Kurt A CIV USARMY CESAW (USA) <[e-mail]>
Sent: Thursday, November 5, 2020 3:13 PM
To: Hughes, Emily B CIV USARMY CESAW (USA)<[e-mail]>; Stello, Stephen M CIV USARMY
CESAW (USA) <[e-mail]>
Subject: RE: Spillway permit figures
Steve & Emily,
I agree, at this point, extending Spillway 1 and 3 a little bit further won't hurt.
Respectfully,
Kurt A. Heckendorf, PE (MN)
Geotechnical and Dam Safety Section
U.S. Army Corps of Engineers, Wilmington District
69 Darlington Avenue, Wilmington, NC 28403-1343
Work: [phone]
From: Hughes, Emily B CIV USARMY CESAW (USA) <[e-mail]>
Sent: Thursday, November 5, 2020 13:14
To: Stello, Stephen M CIV USARMY CESAW (USA) <[e-mail]>; Heckendorf, Kurt A CIV USARMY
CESAW (USA) <[e-mail]>
Subject: RE: Spillway permit figures
Steve,
I would suggest extending Spillway 1 another —50 feet because it is still daylighting in the marsh.
Spillway 2 looks good.
Spillway 3 could be extended another 20 feet as well.

Thanks,
Emily
From: Stello, Stephen M CIV USARMY CESAW (USA) <[e-mail]>
Sent: Thursday, November 5, 2020 12:27 PM
To: Heckendorf, Kurt A CIV USARMY CESAW (USA) <[e-mail]>; Hughes, Emily B CIV USARMY
CESAW (USA) <[e-mail]>
Subject: Spillway permit figures
Emily, see attached figures for the spillway permitting. Let me know if any additional information is needed.
Thanks,
Stephen Stello, RE
Design and General Engineering Section
U.S. Army Corps of Engineers,
Wilmington District
910-251-4627

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