NC0062481_Draft Permit_20200224

ROY COOPER
Governor
MICHAEL S. REGAN °_'n
Secretary
S. DANIEL SMITH
Director N. +4•
tit p Hvgi.•
NORTH CAROLINA
Environmental Quality
February 24,2020
Ms. Amanda Berger
Aqua North Carolina, Inc.
202 Mackenan Court
Cary,NC 27511
Subject: Draft NPDES Permit NC0062481
Mallard Head 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.(5.)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 [e-mail] or(919)707-3621.
Sincerely,
0 J
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/di vi lions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NC0062481
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
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
Mallard Head WWTP
1112 Mallard Head Lane
Mooresville
Iredell County
to receiving waters designated as an unnamed tributary to Reeds Creek 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 NC0062481
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 0.01 MGD wastewater treatment system which includes the
following components:
➢ Bar Screen
➢ Aeration basin
> Clarifier
> Chlorine contact chamb9( tablet chlorination
> Dechlorination facilities = r
➢ Digester
> Cascade Post Aeration
> Standby Power Generator
This wastewater treatment system is located at the Mallard Head WWTP at 1112 Mallard Head
Condominiums(NCSR 1112) Mooresville in Iredell County.
2. After receiving an Authorization to Construct permit from the Division of Water Resources,
construct the necessary components to upgrade the wastewater treatment system to 0.02
MGD.
3. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Reeds Creek, classified WS-IV, B; CA waters in the Catawba River
Basin.
Page 2 of 8

Permit NC006248I
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 0.01
MGD,the Permittee is authorized to discharge treated wastewater 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
Average Maximum Frequency Sample Type Location2
Flow 0.01 MGD Weekly Instantaneous I or E
[50050]
BOD, 5-day, (20°C) 18.0 mg/L 27.0 mg/L Weekly Grab E
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Grab E
[C0530]
NH3-N(summer)s 2.0 mg/L 10.0 mg/L Weekly Grab E
[C0610]
NH3-N(winter)3 4.0 mg/L 20.0 mg/L Weekly Grab E
[C0610]
Dissolved Oxygen(mg/L) >6.0 mg/L Weekly Grab E
[00300]
Fecal Coliform
(geometric mean) 200/100mI 400/ 100mI Weekly Grab E
[31616]
Total Residual Chlorine4 17 µg/L 2/Week Grab E
[50060]
Temperature(mg/L) Daily Grab
[00010]
Temperature(mg/L) Weekly Grab U, D
[00010]
pH >6.0 and <9.0 standard Weekly Grab E
[00400] units
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system
[see A. (5.)].
2. Sample Location: I- Influent, E—Effluent,U-Upstream at least 100 feet upstream from the outfall,D-
Downstream at NCSR 1114.
3. Summer is defined as the period from April 1 through October 31,while winter is defined as November 1
through March 31.
4. 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 3 of 8

Permit NC0062481
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning after expansion above 0.01 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 Characteristics Limits Monitoring Requirements
Monthly Daily Measurement Sample Type Sample
Average Maximum Frequency Location
Flow 0.02 MGD Continuous Recorder I or E
[50050]
BOD, 5-day,20°C(summer) 5.0 mg/L 7.5 mg/L Weekly Grab E
[C0310]
BOD, 5-day,20°C(winter) 10.0 mg/L 15.0 mg/L Weekly Grab E
[C0310]
Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Grab E
[C0530]
NH3-N (summer)s 2.0 mg/L 10.0 mg/L Weekly Grab E
[C0610]
NH3-N (winter)3 4.0 mg/L 20.0 mg/L Weekly Grab E
[C0610]
Dissolved Oxygen >6.0 mg/L Weekly Grab E
[00300]
Fecal Coliform
(geometric mean) 200/ 100m1 400/ 100m1 Weekly Grab E
[31616]
Total Residual Chlorine(TRC), 17 µg/L 2/V11eek Grab E
[50060]
Temperature(mg/L) Daily Grab E
[00010]
Temperature(mg/L) Weekly Grab U, D
[00010]
pH >6.0 and <9.0 standard Weekly Grab E
[00400] units
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system
[see A. (5.)].
2. Sample Location: I- Influent, E—Effluent,U-Upstream at least 100 feet upstream from the outfall, D-
Downstream at NCSR 1114.
3. Summer is defined as the period from April 1 through October 31,while winter is defined as November 1
through March 31.
4. The Division shall consider all effluent TRC values reported below 50 pg/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 NC0062481
A. (3.) SPECIAL CONDITION—Operations
[G.S. 143-215.1C.]
(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. (4.) SPECIAL CONDITION—Spill Notification
[G.S. 143-215.1C.]
rz
(a)Contacting Public Health Directors t04.0`
The permittee must notify the Iredell,Lincoln,Catawba, 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:
Catawba County Health Direct Iredell County Health Director
ryy3070 11t Ave.Dr. S.E. 318 Turnersburg Highway
Hickory,NC 28602 '4 Statesville, NC 28625
828-695-5800 704-878-5300
*40
Lincoln County Health Director Mecklenburg County Health Director
151 Sigmon Rd. 249 Billingsley Rd.
Lincolnton,NC 28092-8643 Charlotte,NC 28211
704-735-3001 704-336-4700
(b)Public Notification
The permittee must notify the public of untreated wastewater spills. Wastewater facility owners or
operators must 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 county 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).
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
counties 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 a newspaper of
general circulation in Iredell,Lincoln,Catawba, 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:
Page 5 of 8

Permit NC0062481
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. (5.) 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)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR) internet 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 internet. 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:
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.
Page 6 of 8

Permit NC0062481
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-system-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
electronicallyto the Division unless the permittee re-applies for and is granted a
shall be submitted pp
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.
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
Page 7 of 8

Permit NC0062481
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 cert , 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 submittingfalse information, including the
possibility offinesimprisonmentfor and knowing violations."
5. Records Retention [Supplements Section D. (6.11
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°33' 43" Facility
Aqua North Carolina, Inc. X
Longitude: 80° 54' 22"
Stream Class: WS-IV, B; CA Mallard Head WWTP Location
Sub-basin: 03-08-32 NC0062481 —
Receiving Stream: UT to
Reeds Creek North Iredell County