NC0064564_Draft Permit_20230516

ROY COOPER
c
Governor '3. i,,
ELIZABETH S.BISER
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
May 16,2023
Ms.Amanda Berger
Aqua North Carolina
202 MacKenan Drive
Cary,NC 27511
Subject: Draft NPDES Permit NC0064564
Neuse Colony WWTP
Grade WW-3 Biological WPCS
Johnston County
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:
> A reopener condition for permits in the Neuse River basin has been added at Part I.A. (6).
➢ Electronic data submission requirements have been updated.
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/3k5NFaL 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 Johnston County area,per EPA requirements.Please provide your
comments,if any,to me at the e-mail address below 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.
1 If you have questions concerning the draft,please contact me at [e-mail].
Sncerely,
' /)7-
Environmental Specialist 11
NPDES Compliance and Expedited Permitting
Northa rtmt of Environmental Q Di
512 NorthCarolin SalisbDepaury Streeten 11617 Mailviron Service
uality CenterI I Raleighvisionof,NorthWater CarolinaResources699-271617
" 919.707.9000
Oti.YT�d Oiui\

Permit NC0064564
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
Neuse Colony WWTP
NCSR 1705 and NC Highway 42
Clayton
Johnston County
to receiving waters designated as the Neuse River in the Neuse 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 31,2028.
If the permittee intends to continue to discharge at the facility beyond the term of this permit, a renewal -
application must be submitted no later than October 3,2027(180 days before the expiration of this permit).
Signed this day
PR* f=
Richard E.Rogers,Jr.,Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

Permit NC0064564
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 0.35 MGD wastewater treatment system that includes the following
components:
• Automatic static screen
• Dual aeration basins
• Anoxic zone
• Dual clarifiers
• Tertiary filters
• Effluent flow meter
• UV disinfection
• Sludge digester
• Generator
The facility is located east of Clayton at the Neuse Colony Subdivision at NCSR 1705 and NC Highway 42 in
Johnston County.
2. After receiving an Authorization to Construct permit(AtC)from the Division, construct and operate
additional treatment units necessary for treatment of up to 0.5 MGD of wastewater.
3. After receiving an AtC from the Division,construct&operate additional treatment units for treatment of up
to 0.75 MGD of wastewater.
4. Discharge from said treatment works at the location specified on the attached map into the Neuse River,
currently classified WS-1V NSW waters in sub-basin 03-04-02 of the Neuse River Basin.
Page 2 of 9

Permit NC0064564
Part
Grade WW-3 Water Pollution Control System [15A NCAC 08G.0302]
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expansion above 0.35 MGD or
expiration,the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
PARAMETER
[eDMR code] Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location2
Flow [50050] 0.35 MGD Continuous RecordingInfluent or
Effluent
Flow [50050] 0.5 MGD Continuous Recordin Influent or
g Effluent
Flow' [50050] 0.75 MGD Continuous RecordingInfluent or
Effluent
Total Monthly Flow [82220] Monitor&Report Monthly Calculated Effluent
BOD,5-day(20°C) 5.0 mg/L 7.5 mg/L 3/Week Composite Effluent
(April 1 —October 31) [C0310]
BOD,5-day(20°C) 10.0 mg/L 15.0 mg/L 3/Week Composite Effluent
(November 1 —March 31) [C0310]
Total Suspended Solids [C0530] 30.0 mg/L 45.0 mg/L 3/Week Composite Effluent
NH3 as N 2.0 mg/L 10.0 mg/L 3/Week Composite Effluent
(April 1 —October 31) [C0610]
NH3 as N 4.0 mg/L 20.0 mg/L 3/Week Composite Effluent
(November 1 —March 31) [C0610]
Dissolved Oxygen [00300] Daily average>6.0 mg/L 3/Week Grab Effluent
Dissolved Oxygen [00300] Variable2 Grab U&D
Fecal Coliform 200/100 mL 400/100 mL 3/Week Grab Effluent
(geometric mean) [31616]
Temperature(°C) [00010] Daily Grab Effluent
Temperature(°C) [00010] Variable2 Grab U&D
Total Kjeldahl Nitrogen [TKN] [00625] Monitor&Report[mg/L] Weekly Composite Effluent
NO2 as N+NO3 as N [00630] Monitor&Report[mg/L] Weekly Composite Effluent
Total Nitrogen[TN]5 [C0600] Monitor&Report[mg/L] Weekly Composite Effluent
TN Load6 [QM600] Monitor&Report(pounds/month) Monthly Calculated Effluent
[QY600] (8,447 pounds/year)7 Annually Calculated Effluent
Total Phosphorus5 [C0665] 2.0 mg/L quarterly average Weekly Composite Effluent
pH [00400] <6.0 and>9.0 standard units 3/Week Grab Effluent
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A.
(8)].
Page 3 of 9

Permit NC0064564
2. U:at least 100 feet upstream from the outfall. D:at least 300 feet downstream from the outfall. Instream samples
shall be collected 3/Week from June 1—September 30,and Weekly for the remaining months of the year.
3. This limit will take effect after completion of the expansion to 0.5 MGD. No other limits and monitoring
frequencies will change at expansion.
4. This limit will take effect after completion of the expansion to 0.75 MGD. No other limits and monitoring
frequencies will change at expansion.
5. For a given wastewater sample,TN=TKN+NO2-N+NO3-N,where TN is Total Nitrogen;TKN is Total Kjeldahl
Nitrogen;NO3 as N is Nitrate Nitrogen;and NO2 as N is Nitrite Nitrogen.
6. TN Load is the mass load of Total Nitrogen discharged in a given period of time[see A.(3)].
7. Compliance with this limit shall be determined in accordance with A.(4)of this permit.
8. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during each
calendar quarter(January-March,April-June,July-September,October-December).
NOTE: See A.(2)for instructions should the facility's permitted UV system fail and an alternative means of disinfection
is required. Total Residual Chlorine limit and monitoring requirements are applicable if chlorine compounds are
used for disinfection.
There shall be no discharge offloating solids or visible foam in other than trace amounts.
A. (2) TEMPORARY MEANS OF DISINFECTION
[NCGS 143-215.1(a)]
In the event that the wastewater treatment plant's ultraviolet(UV)disinfection system should fail,underperform,
or otherwise be removed from effective service,the permittee or his agent should immediately inform the Surface
Water Protection Section staff of the Raleigh Regional Office of this development and discuss temporary,
alternate means for disinfection of the effluent.
If chlorine compounds are used as temporary means of disinfection,the total residual chlorine(TRC)
concentration of the effluent must be monitored on a daily basis while this method of disinfection is in use and
values must be reported on the discharge monitoring report. TRC in the effluent may not exceed 28 µg/L;
therefore,dechlorination methods may also be necessary to ensure protection of water quality in the receiving
stream.
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.
Use of a disinfection system other than the permitted UV system during circumstances not deemed as emergency
and/or temporary(replacement of lamps, lamp cleaning or maintenance,etc.)will be considered a violation of the
terms of this permit.
Page 4 of 9

Permit NC0064564
A. (3) CALCULATION OF TOTAL NITROGEN LOADS
[G.S. 143-215.1 (b)]
The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load(pounds/month)=TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration(mg/L)of the composite
samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/month)
8.34 = conversion factor,from(mg/L x MG)to pounds
ii. Annual TN Load(pounds/year)=Sum of the 12 Monthly TN Loads for the calendar year
The Permittee shall report monthly Total Nitrogen results(mg/L and pounds/month)in the discharge monitoring
report for that month and shall report each year's annual results(pounds/year)in the December report for that
year.
A. (4) ANNUAL LIMITS FOR TOTAL NITROGEN
[G.S. 143-215.1 (b)]
a. Total Nitrogen(TN)allocations and TN Load limits for NPDES dischargers in the Neuse River basin
apply on a calendar year basis.
b. For any given calendar year,the Permittee shall be in compliance with the annual TN Load limit in this
Permit if:
i. the Permittee's annual TN discharge is less than or equal to its TN Load limit,or
ii. the Permittee is a co-permittee member of a compliance association.
c. If the Permittee is not a co-permittee member of a compliance association and the Permittee's cumulative
annual TN discharge exceeds the effective TN Load limit in this permit at any point during the calendar
year,the Permittee is in violation of its TN Load limit,and each day of a continuing violation shall
constitute a separate violation.
• d. The TN Load limit in this Permit(if any)may be modified as the result of allowable changes in the
Permittee's TN allocation.
i. Allowable changes include those resulting from purchase of TN allocation from the Wetlands
Restoration Fund;purchase, sale,trade,or lease of allocation between the Permittee and other
dischargers;regionalization;and other transactions approved by the Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect allowable
changes in its TN allocation.Upon receipt of timely and proper application,the Division will modify
the permit as appropriate and in accordance with state and federal program requirements.
iii. Changes in TN limits become effective on January 1 of the year following permit modification. The
Division must receive application no later than August 31 for changes proposed for the following
calendar year.
iv. Application shall be sent to:
NCDWR/NPDES Programs
Attn:Neuse River Basin Coordinator
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Permit NC0064564
1617 Mail Service Center
Raleigh,NC 27699-1617
e. If the Permittee is a member and co-permittee of an approved compliance association, its TN discharge
during that year is governed by that association's group NPDES permit and the TN limits therein.
i. The Permittee shall be considered a Co-Permittee Member for any given calendar year in which it is
identified as such in Appendix A of the association's group NPDES permit.
ii. Association roster(s)and members'TN allocations will be updated annually and in accordance with
state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association,the Division must be notified of the
proposed action in accordance with the procedures defined in the association's NPDES permit.
(A) Upon receipt of timely and proper notification,the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the year
following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of this
Permit and are not affected by the Permittee's membership in a compliance association.
A. (5) TOTAL NITROGEN ALLOCATIONS
[G.S. 143-215.1 (b)]
The following table lists the Total Nitrogen(TN)allocation(s)assigned to,acquired by,or transferred to the
Permittee in accordance with the Neuse River nutrient management rule(T15A NCAC 02B .0713)and the status
of each as of permit issuance.For compliance purposes,this table does not supersede any TN limit(s)established
elsewhere in this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-
Permittee Member.
ALLOCATION AMOUNT
ALLOCATION SOURCE DATE STATUS
TYPE Estuary Discharge
(pounds/year) (pounds/year)
Base Assigned by Rule 12/7/1997; 4,224 8,447 Active
(T15A NCAC 02B .0713) 4/1/2003
TOTAL 4,224 8,447 Active
Footnote:
1. Transport Factor=50%
Any addition,deletion,or modification of the listed allocations(other than typographical errors)or any change to
Active status of any of the listed allocations shall be considered a major modification of this permit and shall be
subject to the public review process afforded such modifications under state and federal rules.
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Permit NC0064564
A. (6) PERMIT RE-OPENER: NUTRIENT MANAGEMENT
[NCGS 143-215.1 (b)]
a) Pursuant to N.C.General Statues Section 143-215.1 and implementing rules found in Title 15A of North
Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1)and 02H.0114(a),
and Part II, Sections B.12 and B.13.of this Permit,the Director of DWR may reopen this permit to require
nutrient management measures for the discharge.The results of water quality monitoring,modelling or other
evaluations may require that conditions for total nitrogen and total phosphorus control be imposed on this
permit.
b) The Division may,upon written notification to the permittee,re-open this permit in order to incorporate or
modify effluent limits,monitoring and reporting requirements,and other permit conditions when it deems
such action is necessary to implement TMDL(s)approved by the USEPA.
A.(7) 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)!
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
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Permit NC0064564
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 21,2025,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(lx9),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 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 8 of 9

Permit NC0064564
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.)(b)and Supersedes Section B.(11.1(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 H, 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 certi, 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.(6.11
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 9 of 9

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NC0064564 — Neuse Colony WWTP Facility �.
Location
Latitude: 35-o
38'44" Sub-basin: 03-04-02
Longitude: 78° 24' 20" Receiving Stream: Neuse River
Stream Class: WS-IV NSW ✓V(S�Liarl Johnston County
Map not to scale