WQ0030775_Additional Information Request_20211109

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
November 9, 2021
MICHAEL A. MELTON — ENGINEERING MANAGER
AQUA NORTH CAROLINA, INC.
202 MACKENAN COURT
CARY, NORTH CAROLINA 27511
Subject: Application No. WQ0030775
Additional Information Request
Avendale WWTP
High -Rate Infiltration System
Pender County
Dear Mr. Melton:
Division of Water Resources' Central and Regional staff has reviewed the application package
received August 23, 2021. However, additional information is required before the review may be
completed. Please address the items on the attached pages no later than the close of business on December
9, 2021.
Please be aware that you are responsible for meeting all requirements set forth in North Carolina
rules and regulations. Any oversights that occurred in the review of the subject application package are
still the Applicant's responsibility. In addition, any omissions made in responding to the outstanding items
in Sections A through K, or failure to provide the additional information on or before the above requested
date may result in your application being returned as incomplete.
Please reference the subject application number when providing the requested information. All
revised and/or additional documentation shall be signed, sealed and dated (where needed), with an
electronic copy submitted to our upload site (URL: hiips://edocs.deg.nc.gov/Fonns/NonDischarg_e-
Branch-Submittal-Form-Ver2).
If you have any questions regarding this request, please do not hesitate to contact me at (919) 707-
3660 or Lauren.Plummer(ancdenr.gov. Thank you for your cooperation.
Sl"DbcuSl9�d by:
�u,1�n.en,
a ifim,W*_Plummer, Engineer III
Division of Water Resources
cc: Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
James W. Holland, PE — McKim & Creed, Inc. (Electronic Copy)
Permit Application File WQ0030775
E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NORTH CAROHNA -
oePemmencatE.W —rdalQuari /� 919.707.9000

Mr. Michael A. Melton
November 9, 2021
Page 2 of 3
A. Cover Letter:
1. No comment.
B. Application Fee:
1. Not applicable.
C. Application:
1. Item IV. 1. was not completed. The proposed modification appears to extend towards the property
line of the parcel located on Avendale Drive, and it is unclear whether within the setback distances
required by 15A NCAC 02T .0706(d) have been met. Please update this table accordingly.
D. En2ineerin2 Plans:
1. Sheet M100 depicts an existing splitter box and manual screen. This is presumably the screen
described within the existing permit, and it is unclear whether this screen is to remain in service
upon completion of the proposed work. Please provide additional information.
E. Specifications:
1. A complete set of specifications are to be provided separate from the engineering plans pursuant to
15A NCAC 02T .0105. Specifications should include material and installation requirements for
proposed structures, piping, and all other appurtenances, at minimum. Specifications must be
signed, sealed, and dated by a North Carolina licensed Professional Engineer in good standing.
2. A project construction sequence was not provided, and it is unclear whether the proposed
modifications will impede the operation of the existing wastewater treatment system. Please
provide a construction sequence and indicate which tasks (if any) will require bypassing or
operations shutdown.
F. En2ineerin2 Calculations:
1. The partial hydraulic loading calculations were not included in the uploaded submittal. Please
provide a copy of these calculations for our review.
G. Site Map:
1. No comment.
H. Power Reliabilitv Plan:

Mr. Michael A. Melton
November 9, 2021
Page 3 of 3
1. The proposed modification will include additional components requiring power. Please provide
additional information regarding the existing power reliability plan and whether it is sufficient to
power the additional equipment.
L Operation & Maintenance Plan:
1. An Operation & Maintenance (O&M) Plan was not provided within the submittal, and it is unclear
whether the existing plan includes spill control provisions and anticipated maintenance activities
related to the proposed modification. Please provide an updated O&M Plan that meets the
requirements of 15A NCAC 02T .0707.
J. Residuals Management Plan:
1. Not applicable.
K. Additional Documentation:
➢ Certificate of Public Convenience and Necessity:
1. No comment.
➢ Existing Permit:
1. No comment.