NC0074900_Draft Permit_20210322

stSTATE''L..
�' �, 46'
ROY COOPER 1 - r
Governor t ,r
DIONNE DELLI-GATTI , ,
Secretary @`0i"�
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
March 22, 2021
Mr. Shannon Becker
Aqua North Carolina,Inc.
202 Mackenan Court
Cary,NC 27511
Subject: Draft NPDES Permit NC0074900
Highway 150 WWTP
Iredell County
Grade II Biological WPCS
Dear Permittee:
The Division has reviewed your request to renew the subject permit.Enclosed with this letter is a copy of the draft
permit for your facility.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:
> The monitoring frequency for Fecal Coliform(Summer)has been reduced from 3/Week to Weekly in the
effluent tables in Section A. (1.) and A. (2.). This change is consistent with the monitoring frequency
required of other WWTPs discharging to Lake Norman and 15A NCAC 02B .0508. As the Summer and
Winter limits and monitoring for Fecal Coliform are now identical, these have been combined into one
parameter on each effluent table.
➢ Section A. (4.) has been updated regarding electronic submission of effluent data. Federal regulations
require electronic submittal of all discharge monitoring reports(DMRs).
Please note that the Catawba River(Lake Norman) is listed as an impaired waterbody on the North Carolina
303(d)Impaired Waters List.Addressing impaired waters is a high priority with the Division,and instream data
will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can
be attributed to your facility,then mitigative measures may be required.
The NPDES standard conditions(Parts II,III,and IV)that are a part of the permit are not included in this draft
document(cover,map,and Part I).The conditions are the same as in your current permit except that agency and
division names have been updated.The latest version is available at https://bit.ly/2BZ4xxx and can be viewed
online or downloaded as a PDF file.
With this notification,the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Iredell County area,per EPA requirements. Please provide your
comments,if any,to me at the address below no later than 30 days after receiving this draft permit.
---,„) N Environmental Quality Division rc
512orth NorthCarolina Salisbury StreetDepartment 1of 1617 Mail Service Center I Raleigh,NorthofWater CarolinaResou 2769es9-1617
N0,1 H CAROL INA
Oeponment a Enviratill.d arm 919.707.9000

Page 2 of 2
NPDES Permit NC0074900
DRAFT Permit Renewal
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 questions concerning the draft,please contact me at
919-707-3712,or via e-mail at sydney.carpenter@n,ncdenr.gov.
Sincerely,
Sydney Carpenter
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES File[Laserfiche]
Mooresville Regional Office[Laserfiche]
Operator Certification Program
Public Water Supply

NPDES Permit NC0074900
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
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
Highway 150 WWTP
130 Quiet Cove Road
Mooresville
Iredell County
to receiving waters designated as Catawba River(Lake Norman) 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

NPDES Permit NC0074900
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 0.10 MGD wastewater treatment facility. This facility is located at
130 Quiet Cove Road, Mooresville, in Iredell County. The wastewater treatment system includes the
following components:
• Equalization tank
• Dual 50,000 GPD activated sludge package plants with diffused air and secondary
clarification
• Aerated sludge holding tank
• Dual cell tertiary treatment (sand filters)
• Chlorination
• Dechlorination
• Diffused post-aeration
2. After receiving an Authorization to Construct(ATC)permit from the Division of Water Resources
to expand flow, and after submitting to the Division an Engineers Certification form documenting
that upgrades were completed in accord with this permit and the ATC, construct and operate a
wastewater treatment system not to exceed 0.225 MGD.
3. Discharge from said treatment works via Outfall 001 at the location specified on the attached map
into Catawba River(Lake Norman), currently classified WS-IV, B, CA waters [Stream Index: 11-
(75)] in sub-basin 03-08-32 [HUC: 030501011202] of the Catawba River Basin.
Page 2 of 8

NPDES Permit NC0074900
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of this permit and lasting until expansion above
0.10 MGD or expiration, the Permittee is authorized to discharge treated domestic (non-industrial)
wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as
specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT CHARACTERISTICS
[eDMR Code]
Monthly Daily Measurement Sample Type Sample
Average Maximum Frequency Location
Flow(MGD) 50050 0.10 MGD Continuous RecordingInfluent or
Effluent
BOD,5-day(20°C)(mg/L) C0310 15.0 mg/L 22.5 mg/L Weekly Composite Effluent
Total Suspended Solids(TSS)(mg/L) C0530 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
NH3as N(mg/L) C0610 4.0 mg/L 20.0 mg/L Weekly Composite Effluent
Fecal Coliform(geometric mean) 31616 200/100 ml 400/100 ml Weekly Grab Effluent
Oil and Grease(mg/L) 00556 30.0 mg/L 60.0 mg/L Weekly Grab Effluent
Temperature(°C) 00010 Monitor&Report 3/Week Grab Effluent
Dissolved Oxygen(DO)(mg/L) 00300 Daily Average>5.0 mg/L Weekly Grab Effluent
pH(su) 00400 >6.0 and<9.0 standard units Weekly Grab Effluent
Total Residual Chlorine(TRC)(pg/L)2 50060 28.0 pg/L 2/Week Grab Effluent
Total Nitrogen(TN)(mg/L)3 C0600 Monitor&Report Quarterly Composite Effluent
Total Phosphorus(TP)(mg/L) C0665 Monitor&Report Quarterly Composite Effluent
Table A. (1.)Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system.
[see A. (4)]
2. The Division shall consider all effluent TRC values reported<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 j.tg/L.
3. For a given wastewater sample,TN=TKN+(NO2-N+NO3-N), where TN is Total Nitrogen and TKN is
Total Kjeldahl Nitrogen, and(NO2-N+NO3-N) is Nitrite/Nitrate Nitrogen.
All samples collected should be from a representative discharge event.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
Page 3 of 8

NPDES Permit NC0074900
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
Grade II Biological Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning upon expansion to 0.225 MGD and lasting until expiration, the
Permittee is authorized to discharge treated domestic (non-industrial) wastewater from Outfall 001.
Such discharges shall be limited and monitored' by the Permittee as specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT CHARACTERISTICS
[eDMR Code]
Monthly Daily Measurement Sample
Average Maximum Frequency Sample Type Location
Flow(MGD) 50050 0.225 MGD Continuous RecordingInfluent or
Effluent
BOD,5-day(20°C)(mg/L) C0310 15.0 mg/L 22.5 mg/L Weekly Composite Effluent
Total Suspended Solids(TSS)(mg/L) C0530 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
NH3as N(mg/L) C0610 2.0 mg/L 10.0 mg/L Weekly Composite Effluent
(April 1 —October 31)
N(mg/L) C0610 4.0 mg/L 20.0 mg/L Weekly Composite Effluent
(November 1—March 31)
Fecal Coliform(geometric mean) 31616 200/100 ml 400/100 ml Weekly Grab Effluent
Oil and Grease(mg/L) 00556 30.0 mg/L 60.0 mg/L Weekly Grab Effluent
Temperature(°C) 00010 Monitor&Report 3/Week Grab Effluent
Dissolved Oxygen(DO)(mg/L) 00300 Daily Average>5.0 mg/L Weekly Grab Effluent
pH(su) 00400 >6.0 and <9.0 standard units Weekly Grab Effluent
Total Residual Chlorine(TRC)(pg/L)2 50060 28.0 pg/L 2/Week Grab Effluent
Total Nitrogen(TN)(mg/L)3 C0600 Monitor&Report Quarterly Composite Effluent
Total Phosphorus(TP)(mg/L) C0665 Monitor&Report Quarterly Composite Effluent
Table A. (2.)Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system.
[see A. (4)]
2. The Division shall consider all effluent TRC values reported<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.
3. For a given wastewater sample,TN=TKN+(NO2-N+NO3-N), where TN is Total Nitrogen and TKN is
Total Kjeldahl Nitrogen, and(NO2-N+NO3-N) is Nitrite/Nitrate Nitrogen.
All samples collected should be from a representative discharge event.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
Page 4 of 8

NPDES Permit NC0074900
A. (3.) SPECIAL CONDITION — Spill Notification
[G.S. 143-215.1C]
(a) Contacting Public Health Directors
The facility 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:
Iredell County Health Director Mecklenburg County Health Director
318 Turnersburg Highway 249 Billingsley Road
Statesville, NC 28625 Charlotte, NC 28211
704-878-5300 704-336-4700
Catawba County Health Director Lincoln County Health Director
3070 11th Ave. Dr. SE 151 Sigmon Road
Hickory, NC 28602 Lincolnton, NC 28092
828-695-5800 704-735-3001
(b) Public Notification
The facility 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 48 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 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
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 a
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 DWR 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
Page 5 of 8

NPDES Permit NC0074900
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. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[NCGS 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.
Page 6 of 8

NPDES Permit NC0074900
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, 2025, 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-di scharge-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 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.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
Page 7 of 8

NPDES Permit NC0074900
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B.(11.)(b)and Supersedes Section B.(11.)(d)[
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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Highway 150 WWTP Facility
NPDES Permit NC0074900 Location41111111111,
Latitude: 35°36'17"N Sub-Basin: 03-08-32 (map not to scale)
Longitude: 80°56'35"W 8-Digit HUC: 03050101
Stream Class: WS IV,8,CA Stream Index: 11-(75) I
Receiving Stream: Lake Norman(Catawba River) North Iredel I County