NC0056154_Authorization to Construct_20210707

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ROY COOPER
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Governor *fit Pi
ELIZABETH S.BISER
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
July 7, 2021
Michael A. Melton, Engineering Manager
Aqua North America, Inc
4163 Sinclair Street
Denver,North Carolina 28037
SUBJECT: Authorization to Construct
A to C No. 056154A02
Aqua North America, Inc.
Bridgeport WWTP
NPDES Permit No.NC0056154
Dear Mr.Melton:
A letter of request for an Authorization to Construct was received February 26, 2021, by
the Division of Water Resources (Division). With additional information received on July 6,
2021 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
Bridgeport WWTP, with discharge of treated wastewater into the Catawba River in the Catawba
Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
Installation of one (1) 1.25 MGD bar screen, one (1) 1.25 MGD bypass manual bar
screen; construction of a new dual train package plant which includes one (1)26,600-gallon flow
equalization basin with two (2) 195 GPM submersible pumps, two (2) 40,000-gallon rectangular
aeration basins, one (1) 144 square feet rectangular clarifier with 12 feet of side water depth, one
(1) 21,788-gallon sludge digestor with air lift pumps for RAS/WAS and scum lines, and a new
concrete blower pad; installation of two (2) 81 SCFM positive displacement blowers for the
aerobic digestor, and one (1) 71 SCFM positive displacement blower for the flow equalization
basin; replacement of the two (2) existing effluent pumps with two (2) 195 gpm submersible
pumps; conversion of the one (1) existing equalization basin blower and one (1) existing post
aeration blower to airlift blowers; decommissioning and demolishing of the existing 0.08 MGD
steel package plant; installation of an electrical and SCADA control system, 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.
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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
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°ciu^�rc��m Enmm^nrenmiquzuq 919.707.9000

Mr.Michael Melton,Engineering Manager
July 7,2021
Page 2 of 3
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0056154 issued effective August 8, 2020, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No.NC0056154.
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 Mooresville Regional Office, telephone number 704-663-1699, 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.
D_E North Carolina Department of Environmental Quality I Division of Water Resources
-;) 512 North Salisbury Street 11617 Mail Service Center I Raleigh,North Carolina 27699-1617
NORTH CAROLINA
Warbled of Environmental Walt jell 919.707.9000

Mr.Michael Melton,Engineering Manager
July 7,2021
Page 3 of 3
A copy of the project plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
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 Julia Byrd at
telephone number(919) 707-3707.
Sincerely,
EDocuSigned by:
t Liu A.:1.e.
B0B410C9F6204F7...
for S.Daniel Smith
Director, Division of Water Resources
• by Min Xiao,PE
NPDES Industrial Permitting Unit
With Engineer's Certificate attached:
cc: NPDES Files -
ecopy: David F. Schrader, PE
Howard K. Bell Consulting Engineers, Inc.
Email: [e-mail]
DWR Mooresville Regional Office, Water Quality Programs
Without Engineer's Certificate attached:
cc: Iredell County Health
EQ^q, North Carolina Department of Environmental Quality I Division of Water Resources
-;) 512 North Salisbury Street 11617 Mall Service Center I Raleigh,North Carolina 27699-1617
NORM CAROUNA
Department DIlf /"� 919.707.9000

Aqua North America,Inc
Bridgeport WWTP
Authorization to Construct No. 056154A02
Issued July 7, 2021
NPDES Permit No.NC0056154
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 Bridgeport Wastewater Treatment
Plant, located in Iredell 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 one(1) 1.25 MGD bar screen, one(1) 1.25 MGD bypass manual bar screen;
construction of a new dual train package plant which includes one (1) 26,600-gallon flow
equalization basin with two (2) 195 GPM submersible pumps,two(2)40,000-gallon rectangular
aeration basins, one(1) 144 square feet rectangular clarifier with 12 feet of side water depth, one
(1) 21,788-gallon sludge digestor with air lift pumps for RAS/WAS and scum lines, and a new
concrete blower pad; installation of two(2) 81 SCFM positive displacement blowers for the
aerobic digestor, and one (1) 71 SCFM positive displacement blower for the flow equalization
basin;replacement of the two (2) existing effluent pumps with two (2) 195 gpm submersible
pumps; conversion of the one(1) existing equalization basin blower and one(1) existing post
aeration blower to airlift blowers; decommissioning and demolishing of the existing 0.08 MGD
steel package plant; installation of an electrical and SCADA control system, 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 Registration No.
Date
Mail this Certification to: Attn: Min Xiao,PE SEAL
NPDES Industrial Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617