20231624 Ver 1_Staff Report Zachary.Thomas_20231218 (3)

Baker, Caroline D
From: Tillery, Julia A CIV USARMY CESAW (USA) <[e-mail]>
Sent: Tuesday, January 16, 2024 9:18 AM
To: Thomas, Zachary T
Subject: [External] FW: OWASA Morgan Creek Interceptor - Phase 1 and Phase 2?
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
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Julia Tillery
Regulatory Specialist, Raleigh Regulatory Field Office
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Mobile: [phone]
Email: Julia.A.Tillerv<@usace.armv.mil
From: Allison Weakley <[e-mail]>
Sent: Thursday, January 11, 2024 1:39 PM
To: Tillery, Julia A CIV USARMY CESAW (USA) <[e-mail]>
Subject: [Non-DoD Source] RE: OWASA Morgan Creek Interceptor - Phase 1 and Phase 2?
Hi, Julia —
I had following up with you on my to-do list for today!
An application and 100% site plan has been submitted to the Town for review, and we are in Round 1 of
comments. According to our stormwater engineers, the project is no longer phased. Feature B from the Town's stream
determination is not shown on the plans that were submitted, and one of the staging areas is not in the location I
thought we had agreed upon based on a site visit with their engineers (we had agreed it would be outside the 100-yr
floodplain but it's now shown as completely within the floodplain). So those comments as well as others are being/or
have been conveyed in Round 1.
I can set up a SharePoint folder to share photos or other information if you'd like. Did you find out if the PJD had been
approved in 2022 or if you'll be able to conduct a site visit?
Allison
From: Tillery, Julia A CIV USARMY CESAW (USA)<[e-mail]>
Sent: Thursday, January 11, 2024 12:18 PM
To: Allison Weakley <[e-mail]>
Subject: RE: OWASA Morgan Creek Interceptor - Phase 1 and Phase 2?
External email: Don't click links or attachments from unknown senders. To check or report click the Phish Alert Button

Hi, Allison,
I hope you're well, it was a pleasure getting to know you over the phone last month, let's continue at some point. I'm
just checking back to see if you gained any new information on this OWASA project. It is still under review for Section
404 and 401. If you have information that may be relevant to the regulatory review process, please let me know.
Thank you,
Julia
Julia Tillery
Regulatory Specialist, Raleigh Regulatory Field Office
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Mobile: [phone]
Email: [e-mail]
From: Allison Weakley <[e-mail]>
Sent: Friday, December 22, 2023 2:08 PM
To: Tillery, Julia A CIV USARMY CESAW (USA)<[e-mail]>
Subject: [Non-DoD Source] RE: OWASA Morgan Creek Interceptor - Phase 1 and Phase 2?
Thanks, Julia. I have a meeting with our stormwater engineers who are reviewing this project on January 3, 2024, to
discuss what plans have been submitted to the Town and the status of our review to date.
Allison
From: Tillery, Julia A CIV USARMY CESAW (USA)<[e-mail]>
Sent: Friday, December 22, 2023 12:38 PM
To: Allison Weakley <[e-mail]>
Subject: OWASA Morgan Creek Interceptor - Phase 1 and Phase 2?
Importance: High
External email: Don't click links or attachments from unknown senders. To check or report click the Phish Alert Button
Phase I of the project involves the installation of approximately 2,100 linear feet of 36-inch gravity sanitary sewer as a
parallel replacement for the existing gravity sewer. The new sewer will be installed via open cut and will involve both
permanent and temporary impacts to the Project Area. Permanent impacts include an approximately 30-ft wide
corridor centered along the new sewer (approximately 2,100 feet long) to be used for permanent maintenance
access. Approximately half of this permanent 30-ft wide corridor is currently cleared and utilized for maintenance of the
existing sewer. Therefore, the new 30-foot-wide corridor's additional "disturbance" beyond the existing cleared
corridor is limited (Figure 1). Temporary impacts include a variable width corridor which averages approximately 30-
foot-wide for the length of the project (approximately 2,200 feet long) that will be restored. The purpose of the
temporary impacts is to accommodate construction of the project site to stage materials and equipment.
Phase II of the project involves the installation of approximately 1,500 linear feet of 36-inch gravity sanitary sewer as a
parallel replacement for the existing gravity sewer. The new sewer is anticipated to be installed via open cut and will
result in permanent and temporary impacts. Design of Phase 11 has not begun, however permanent impacts are

assumed to be an additional 15-ft of cleared area (parallel to existing cleared easement). Additionally, permanent
impacts may include installation of permanent access from Flat Stone Court or the Mason Farm Wastewater Treatment
Plant. Temporary impacts are assumed to be a 30-foot cleared area parallel to the alignment to be used during
construction. It is likely that two approximately 50 feet by 50 feet laydown areas will be placed within the project area
but the location of these is not yet known.
Clearing for Phase I will total 3.68 acres, and between 3 and 7 acres will be cleared for Phase II. Areas outside the Limits
of Disturbance but within the overall Project Area will be preserved. A 30-foot-wide corridor along the new pipe will be
reseeded with natural seed approved by the NC Botanical Gardens (NCBG). Areas outside of that 30-ft wide area will be
restored via woody plants approved by the NCBG.
Julia Tillery
Regulatory Specialist, Raleigh Regulatory Field Office
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Mobile: [phone]
Email: [e-mail]
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