NC0064564_Authorization to Construct_20230829

DocuSign Envelope ID: lA499BE8-E144-4F49-B02B-FC47194lE38B
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JP,.
Director
Ms. Lauren Raup-Plummer
Engineering Manager
Aqua North Carolina, Inc.
202 Mackenan Drive
Cary, North Carolina 27511
Dear Ms. Raup-Plummer:
NORTH CAROLINA
Environmental Quality
August 29, 2023
SUBJECT: Authorization to Construct
A to C No. 0654564A07
Neuse Colony WWTP
NPDES Permit No. NCO064564
A letter of request for an Authorization to Construct was received July 19, 2023, by the
Division of Water Resources (Division). With additional information received on August 17, 2023,
final plans and specifications for the subject project have been reviewed and found to be satisfactory.
Authorization is hereby granted for the construction of modifications to the existing 0.35 MGD
Neuse Colony WWTP, with discharge of treated wastewater into the Neuse River Basin.
This authorization results in an increase in the design and permitted capacity to 0.75 MGD,
and is awarded for the construction of the following specific modifications:
Installation of two (2) 1,320 GPM submersible influent pumps in the existing Flow EQ Tank No.
land two (2) new 2 MGD fine screens; conversion of the two existing rectangular clarifiers to
two (2) 31,600 gallons pre -anoxic zones with two (2) 2.4 HP submersible mixers; re-
arrangement of two existing aeration zones to two (2) 120,000 gallons fine bubble aeration zones
with one (1) additional 826 SCFM aeration blower and two (2) 700 GPM mixed liquor recycle
pumps; installation of two (2) fiberglass reinforced plastic baffle walls and four (4) 2.4 HP
submersible mixers to create two (2) 69,120 gallons post -anoxic zones in the existing tanks;
installation of two (2) 89,440 square feet membrane ultrafiltration system and associated
building including three (3) 835 GPM permeate pumps, three (3) 1,390 GPM return sludge
pumps, three (3) 862 ICFM membrane tank aeration blowers, chemical feed systems for
membrane cleaning, and backpulse storage tank; installation of three (3) 1 MGD banks in series
UV light disinfection system one (1) 8-step 3 feet wide X 10.25 feet vertical drop cascade aerator,
two (2) 32 GPM non -potable pumps, and all necessary piping and controls; in conformity with
the project plans, specifications, and other supporting documentation comprising the ATC Permit
Application package submitted to the Department of Environmental Quality.
North Carolina Department of Environmental Quality I Division of Water Resources
D � 512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
NCRTH CARCLINA 919.707.9000

DocuSign Envelope ID: 1A499BE8-E144-4F49-B02B-FC471941E38B
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August 29, 2023
Page 2 of 3
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No. NC0064564
issued effective September 1, 2023, and shall be subject to revocation unless the wastewater treatment
facilities are constructed in accordance with the conditions and limitations specified in Permit No.
NC0064564.
It is the Owner's responsibility to ensure that the as -constructed project meets the requirements of
all applicable regulations and statutes, the ATC Permit Application package, and all of the
requirements contained herein. Failure to comply may result in penalties in accordance with North
Carolina General Statute § 143-215.6A through § 143-215.6C.
The sludge generated from these treatment facilities must be disposed of in accordance with G.S.
143-215.1 and in a manner approved by the Division.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required by
the Division, such as the construction of additional or replacement wastewater treatment or disposal
facilities.
The Raleigh Regional Office, telephone number 919-791-4200, shall be notified at least forty-eight
(48) hours in advance of operation of the installed facilities so that an on -site inspection can be made.
Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a Professional Engineer certifying that the permitted facility has been installed
in accordance with the NPDES Permit and the ATC Permit Application package. Mail the
Certification to: Division of Water Resources, WQ Permitting — NPDES, 1617 Mail Service Center,
Raleigh, NC 27699-1617.
Upon classification of the facility by the Certification Commission, the Permittee shall employ
a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater
treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to or
greater than the classification assigned to the wastewater treatment facilities by the Certification
Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and grade
to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each Class I
facility at least weekly and each Class II, III and IV facility at least daily, excluding weekends and
holidays, must properly manage the facility, must document daily operation and maintenance of the
facility, and must comply with all other conditions of T15A:8G.0202.
A copy of the project plans and specifications shall be maintained on file by the Permittee
for the life of the facility.

DocuSign Envelope ID: 1A499BE8-E144-4F49-B02B-FC471941E38B
ivia. Lauicu i-,auN-i iuuiuiAIi, Liir:,iu;,�iiur, lvlanager
August 29, 2023
Page 3 of 3
During the construction of the proposed additions/modifications, the Permittee shall continue
to properly maintain and operate the existing wastewater treatment facilities at all times, and in such a
manner, as necessary to comply with the effluent limits specified in the NPDES Permit.
You are reminded that it is mandatory for the project to be constructed in accordance with the
North Carolina Sedimentation Pollution Control Act, and when applicable, the North Carolina Dam
Safety Act. In addition, the specifications must clearly state what the contractor's responsibilities shall
be in complying with these Acts.
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.
The issuance of this ATC does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local,
state, and federal) which have jurisdiction.
If you have any questions or need additional information, please contact Ori Tuvia at telephone
number [phone] or by email at [e-mail].
Sincerely,
IV
DocuSigned by:
b+S pbwk,&
CB9CD2D3C45B4D4...
for Richard E. Rogers, Jr.
Director, Division of Water Resources
by Douglas Dowden
Supervisor, NPDES Industrial Permitting Unit
With Engineer's Certificate attached:
cc: NPDES Files
E-copy: John Phillips, PE
Diehl & Phillips, P.A.
Email: [e-mail]
DWR Raleigh Regional Office, Water Quality Programs
Without Engineer's Certificate attached:
Cc: Johnston County Health

Aqua North Carolina, Inc
Neuse Colony WWTP
Authorization to Construct No. 0654564A07
August 29, 2023
NPDES Permit No. NCO064564
Engineer's Certification
I, , as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time)
the construction of the modifications and improvements to the Neuse Colony WWTP, located in
Johnston County, hereby state that, to the best of my abilities, due care and diligence was used in
the observation of the following construction:
Installation of two (2) 1,320 GPM submersible influent pumps in the existing Flow EQ Tank No.
land two (2) new 2 MGD fine screens; conversion of the two existing rectangular clarifiers to
two (2) 31,600 gallons pre -anoxic zones with two (2) 2.4 HP submersible mixers; re-
arrangement of two existing aeration zones to two (2) 120,000 gallons fine bubble aeration zones
with one (1) additional 826 SUM aeration blower and two (2) 700 GPM mixed liquor recycle
pumps; installation of two (2) fiberglass reinforced plastic baffle walls and four (4) 2.4 HP
submersible mixers to create two (2) 69,120 gallons post -anoxic zones in the existing tanks;
installation of two (2) 89,440 square feet membrane ultrafiltration system and associated
building including three (3) 835 GPM permeate pumps, three (3) 1,390 GPM return sludge
pumps, three (3) 862 ICFM membrane tank aeration blowers, chemical feed systems for
membrane cleaning, and backpulse storage tank; installation of three (3) 1 MGD banks in series
UV light disinfection system one (1) 8-step 3 feet wide X 10.25 feet vertical drop cascade
aerator, two (2) 32 GPM non -potable pumps, and all necessary piping and controls; in
conformity with the project plans, specifications, and other supporting documentation
comprising the ATC Permit Application package submitted to the Department of Environmental
Quality.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance, intent and in conformity with all applicable regulations and statutes and
the project plans, specifications, and other supporting documentation comprising the
Authorization to Construct Permit Application package.
Signature
Date
Registration No.
SEAL
Mail this Certification to: Attn: Min Xiao, PE
NPDES Industrial Permitting Unit
DEQ/DWR/Water Quality Programs -- -
1617 Mail Service Center
Raleigh, NC 27699-1617