NC0056154_Draft Permit_20200224

ROY COOPER ""sT
IV 4%Governor ;
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH t
Director •t`1
lem awing.•
NORTH CAROLINA
Environmental Quality
February 24, 2020
Ms. Amanda Berger
Aqua North Carolina, Inc.
202 Mackenan Court
Cary,NC 27511
Subject: Draft NPDES Permit NC0056154
Bridgeport WWTP
Iredell County
Grade II Biological WPCS
Dear Permittee:
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure
your thorough understanding of the information,conditions,and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
• Section A. (6.)has been updated to require electronic submission of effluent data
reports(DMRs). Federal regulations require electronic submittal of all discharge
monitoring.
• An updated outfall map has been included.
With this notification,the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Davidson County area,per EPA requirements.Please provide your
comments,if any,to me no later than 30 days after receiving this draft permit.
Following the 30-day public comment period,the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit. If you have any questions concerning this permit,please contact
Emily Phillips at emily.phillips(a,ncdenr.gov or(919)707-3621.
Sincerely,
f[141)...0
Emily Phillips
Compliance and Expedited Permitting Unit
cc: NPDES files
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,NC 27699-1617
919-807-6300 919-807-6389 FAX
https://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NC0056154
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
Aqua North Carolina, Inc.
is hereby authorized to discharge wastewater from a facility located at the
Bridgeport WWTP
212 Castaway Trail
M000resville
Iredell County
to receiving waters designated as Lake Norman(Catawba River) in the Catawba River Basin
in accordance with effluent limitations,monitoring requirements, and other conditions set forth in Parts I, II, III
and IV hereof.
This permit shall become effective
This permit and authorization to discharge shall expire at midnight on March 31, 2025.
Signed this day
S. Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0056154
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked.As
of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
Aqua North Carolina, Inc.,
is hereby authorized to:
1. Continue to operate an existing 0.08 MGD waste treatment which includes the following
components: 44
> Influent flow equalization tank we ,
> Bar screen
> Flow splitter box
➢ Dual diffused aeration tanks
➢ Dual clarifiers 4 :1.
➢ Sludge holding tank
➢ Tertiary filter
> Dual tablet disinfection unitstve
w:
> De-chlorination facilities
> Effluent flow recorder with totalizer
> Post-aeration
➢ Effluent pumps
> Standby power generator
This wastewater treatment system is located at 212 Castaway Trail,off NCSR 1102 at the Castaway
Shores/Bridgeport Subdivision near Mount Mourne in Iredell County.
44.
...
2. After receiving an Authorization to Construct from the Division,construct the necessary components to
upgrade the wastewater treatment system to 0.100 MGD(see Part I. A. (3.)).
3. Discharge from said treatment works at the location specified on the attached map into the Catawba River,
classified WS-IV,B; CA waters in the Catawba River Basin.
Page 2 of 8

Permit NC0056154
Part I.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of the permit and lasting until expansion above 0.08 MGD,
the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored ' by
the Permittee as specified below:
EFFLUENT
CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Sample Location
_ Average Maximum Frequency Type
Flow[50050] 0.08 MGD Continuous Recorder Influent or Effluent
BOD, 5 day(20°C) 15.0 mg/L 22.5 mg/L Weekly Composite Effluent
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
[C0530]
NH3 as N [C0610] 4.0 mg/L 20.0mg/L Weekly Composite Effluent
Dissolved Oxygen 2(mg/L)
[00300] Weekly Grab Effluent
Fecal Coliform [31616] 400/100
(geometric mean) 200/100 ml ml Weekly Grab Effluent
Total Residual Chlorine(TRC)3 28 µg/L 2/Week Grab Effluent
[50060]
Temperature(°C)
[00010] Weekly Grab Effluent
Total Nitrogen(mg/L)
(NO2+NO3+TKN) Quarterly Composite Effluent
[00600]
Total Phosphorus(mg/L) Quarterly Composite Effluent
C0665
[ ]
pH >6.0 and<9.0 standard Weekly Grab Effluent
[00400] units
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.
(6.)]
2. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
3. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit.
However,the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory(including field certified), even if these values fall below 50 µg/L.
There shall be no discharge offloating solids or visible foam in other than trace amounts.
Page 3 of 8

Permit NC0056154
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning after expansion above 0.08 MGD and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored ' by the Permittee as
specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Daily Measurement Sample Sample Location
Average Maximum Frequency Type
Flow 0.1 MGD Continuous Recorder Influent or Effluent
[50050]
BOD, 5 day(20°C) 15.0 mg/L 22.5 mg/L Weekly Composite Effluent
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
[C0530]
NH3 as N 4.0 mg/L 20.0 mg/L Weekly Composite Effluent
[C0610]
Dissolved Oxygen2(mg/L) Weekly Grab Effluent
[00300]
Fecal Coliform [31616] 200/ 100 ml 400/100 Weekly Grab Effluent
(geometric meant ml
Total Residual Chlorine(TRC)3 28 pg/L 2/Week Grab Effluent
[50060]
Temperature(°C) Weekly Grab Effluent
[00010]
Total Nitrogen(NO2+NO3+TKN)
(mg/L) Quarterly Composite Effluent
[C0600]
Total Phosphorus Quarterly Composite Effluent
[C0665]
pH >6.0 and <9.0 standard Weekly Grab Effluent
[00400] units
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.
(2)]
2. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
3. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit.
However,the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory(including field certified),even if these values fall below 50 µg/L.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 8

Permit NC0056154
A. (3.) PHASED CONSTRUCTION REQUIREMENTS
[G.S. 143-215.1(b)]
If this facility is to be expanded in phases,plans and specifications for the next phase of expansion shall be
submitted when the flow to the existing system reaches 80%(0.064 MGD)of the design capacity of the
installed components(0.08 MGD).
At no time may the flow tributary to the facility exceed the design capacity of the installed components.
A. (4.) SPECIAL CONDITION—Operations
[G.S. 143-215.1 C.]
(a) Inspect the performance of the plant's disinfection system every weekday and maintain a log of such
inspections; and
(b) Operate a Supervisory Control and Data Acquisition(SCADA)system at the plant.
A. (5.) SPECIAL CONDITION— Spill Notification
[G.S. 143-215.1C.]
(a)Contacting Public Health Directors
The facility must notify the Iredell and Mecklenburg County Public Health Directors within 12 hours of first
knowledge by the owner/operator of any discharge of untreated wastewater to waters of the State or a discharge
from the wastewater treatment plant that has not received adequate disinfection due to a malfunctioning
treatment unit.
The County Public Health Directors can be contacted using the following information:
Current Information for Iredell and Mecklenburg County Health Directors
Iredell County Health Director Mecklenburg County Health Director
318 Tumersburg Highway 249 Billingsley Road
Statesville,NC 28625 Charlotte,NC 28211
Phone Number: 704-878-5300 Phone number: 704-336-4700
(b)Public Notification
The facilitymust notifythepublic of untreated wastewater spills. Wastewater facility owners or operators must
P
issue a press release after a discharge to surface waters of 1,000 gallons within 24 hours of first knowledge of
the spill by the owner/operator.The press release must be issued to"all electronic and print news media outlets
that provide general coverage in the counties(Iredell,and Mecklenburg)where the discharge occurred."A copy
of the press release must be maintained for one year by the owner/operator. This press release is required in
addition to the permit requirement of contacting the North Carolina Division of Water Resources(DWR).
Page 5 of 8

Permit NC0056154
If a discharge of 15,000 gallons or more reaches surface water,a public notice is required in addition to the
press release.The public notice must be placed in a newspaper having general circulation in the County in
which the discharge occurred and the county immediately downstream. The owner or operator shall publish the
notice within 10 days after the Secretary has determined the countries that are significantly affected by the
discharge and approved the form and content of the notice and the newspaper in which the notice is to be
published. At a minimum the notice should be published in the newspaper of general circulation in Iredell,and
Mecklenburg Counties. If a discharge of 1,000,000 gallons of wastewater or more reaches surface waters,the
NC DENR Mooresville Regional Office must be contacted to determine in what additional counties, if any,a
public notice must be published. A copy of these public notices and proof of publication must be sent to the
DWR within 30 days of publication. The copy should be sent to the following address:
Division of Water Resources
PERCS Unit
1617 Mail Service Center
Raleigh,NC 27699-1617
The minimum content of the notice is the location of the discharge,estimated volume, water body affected and
steps taken to prevent future discharges.
A. (6.) ELECTRONIC REPORTING-DISCHARGE MONITORING REPORTS
[G.S. 143-215.1 (b)]
Federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and program
reports.The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)l
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR)intemet application.
Monitoring results obtained during the previous month(s)shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring
data and submit DMRs electronically using the intemet. The eDMR system may be accessed at:
https://deq.nc.gov/about/divisions/water-resources/edmr.
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access,then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms(MR 1, 1.1, 2, 3)or alternative forms approved by
the Director. Duplicate signed copies shall be submitted to the following address:
Page 6 of 8

Permit NC0056154
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
See"How to Request a Waiver from Electronic Reporting"section below.
Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility,on the last day of the month following the
commencement of discharge.
Starting on December 21,2020,the permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
The permittee may seek an electronic reporting waiver from the Division(see"How to Request a Waiver
from Electronic Reporting"section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9),the permittee must identify the initial recipient at the time of each
electronic submission. The permittee should use the EPA's website resources to identify the initial
recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity(EPA
or the state authorized by EPA to implement the NPDES program)that is the designated entity for receiving
electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type
of electronic submission and for each state. Instructions on how to access and use the appropriate
electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting
Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant-
discharge-elimination-syst em-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic
reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division.
Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written
approval at least sixty(60)days prior to the date the facility would be required under this permit to begin
submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and
shall thereupon expire. At such time,monitoring data and reports shall be submitted electronically to the
Division unless the permittee re-applies for and is granted a new temporary electronic reporting waiver by
the Division. Approved electronic reporting waivers are not transferrable. Only permittees with an
approved reporting waiver request may submit monitoring data and reports on paper to the Division for the
period that the approved reporting waiver request is effective.
Page 7 of 8

Permit NC0056154
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements (Supplements Section B.(11.)(b)and Supersedes Section B.(11.)(d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a)or by a duly authorized representative of that person as described in Part II, Section B.
(11.)(b). A person,and not a position,must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user account
and login credentials to access the eDMR system. For more information on North Carolina's eDMR
system,registering for eDMR and obtaining an eDMR user account,please visit the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted.Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties
for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
5. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports,including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report. This
period may be extended by request of the Director at any time [40 CFR 122.41].
Page 8 of 8

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Latitude: 35°31' 15" Aqua North Carolina, Inc. Facility
Longitude: 80°52' 13" I
Bridgeport WWTP Location
Stream Class: WS-IV, B; CA
Sub-basin: 03-08-32 N C 00 56154
Receiving Stream: Lake Norman North Iredell County