NC0040606_Draft Permit_20230711

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Aqua North Carolina, Inc
Attn: Amanda Berger, Director
202 MacKenan Court
Cary, North Carolina 27511
Dear Permittee,
NORTH CAROLINA
Environmental Quality
7/11/2023
Subject: Draft NPDES Permit NCO040606
Barclay Downs WWTP
Grade II Biological WPCS
Wake County
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure a
thorough understanding of the information, conditions, and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
• Section A. (3.) 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.
• Component List has been updated.
• Section A. (5.) Permit Reopener has been included per NCGS 143-215.1(b).
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 ht1ps://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 Wake 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.
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
[phone] or via e-mail at kate.shadwellgdeq.nc.gov.
Sincerely,
Catherine Shadwell
NPDES Compliance and Expedited Permitting
cc: NPDES File [Laserfiche]
Raleigh Regional Office [Laserfiche]
DE�- 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
w aware 919.707.9000

Permit NC0040606
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
1=914 ir1
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NEDES)
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 Contr ct, as amended,
Aqua North Carolina,
is hereby authorized to discharge wastewater from a facility located at the
Barclay Downs WWTP
Hodge Rd
Raleigh
1 e County
to receiving waters designated as t euse River in Neuse River Basin in accordance with effluent
limitations, monitoring requirement d other conditions set forth in Parts I, II, III and IV hereof.
This permit shall become
This permit and authoriza
Signed this day
shall expire at midnight on March 31, 2028.
Richard E. Rogers Jr.
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

Permit NCO040606
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this 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 described herein.
Aqua North Carolina, Inc.
is hereby authorized to:
1. Continue to operate an existing 0.035 MGD wastewater treatment
2.
components:
♦ Dual -Train extended aeration plant
♦ Fine solids settling basin
♦ Ultraviolet Disinfection
♦ Manual bar screen
♦ Dual Clarifiers
♦ Backup Chlorination and
The facility is located at the B
that includes the following
, Hodge Road, Raleigh in Wake County.
Discharge from said treRF ent works via Outfall 001, at the location specified on the attached
map, into the Neuse River, waterbody currently classified WS-IV; Nutrient Sensitive Waters
[Stream Index: 27-(20.7)] within subbasin 03-04-02 [HUC: 030202010705] of the Neuse River
Basin.
Page 2 of 9

Permit NCO040606
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 this permit 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:
PARAMETERS
eDMR Code
Limits
Monitoring Requirements
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Location
Flow MGD
( )
50050
0.035 MGD
Continuous
RecordingInfluent
or
Effluent
Total Monthly Flow
82220
Monitor and Report
Monthly
Calculated
Influent or
Effluent
Temperature oC
00010
Monitor and Report
Daily
Grab
Effluent
NH3 as N
C0610
Monitor and Report
2/Month
Composite
Effluent
Total Suspended Solids
C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
BOD 5-Day
C0310
30.0 mg/L
45 mg/L
Weekly
Composite
Effluent
pH5
00400
Monitor and Report
Weekly
Grab
Effluent
Fecal Coliform
(geometric mean
31616
200/100 mL
400/100 mL
Weekly
Grab
Effluent
Dissolved Oxygen
00300
Monitor and Report
Weekly
Grab
Effluent
Total Residual Chlorine (TRC)2
50060
28 ug/L
2/Week
Grab
Effluent
TKN (mg/L)
00625
Monitor and Report
Monthly
Composite
Effluent
NO2_N + NO3-N (mg/L)
00630
Monitor and Report
Monthly
Composite
Effluent
TN (mg/L)3
C0600
Monitor and Report
Monthly
Composite
Effluent
TN Load4
QM600
QY600
Monitor and Report (lb/month)
Monitor and Report (lb/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorous
C0665
Monitor and Report
Monthly
Composite
Effluent
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using the NC DWR's
eDMR system [see A. (6.)].
2. The facility shall report all effluent TRC values reported by a NC certified laboratory (including field certified
laboratories). However effluent values < 50 µg/L will be treated as zero for compliance purposes.
3. For a given wastewater sample, TN = TKN + NO2-N + NO3-N, where TN is Total Nitrogen and TKN is Total
Kjeldahl Nitrogen.
4. TN Load is the mass load of Total Nitrogen discharged in a given period of time. See condition A. (2).
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN
OTHER THAN TRACE AMOUNTS
Page 3 of 9

Permit NC0040606
A.(2.) CALCULATION OF TOTAL NITROGEN LOADS — NEUSE ESTUARY
[G.S. 143-215.1(b)]
(a.) The Permittee shall calculate monthly and annual TN Loads as follows:
(i.) Monthly TN Load (lb/mo) = 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/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii). Annual TN Load (lb/yr) = Sum of the 12 Monthly YL
oads for the calendar year
(b.)The Permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the discharge
monitoring report for that month and shall report ch year's manual results (lb/yr) in the
December report for that year. �
A.(3.) ANNUAL LIMITS FOR TOTAL NITROGE
[G. S. 143-215.1(b)] 1
(a.) Total Nitrogen (TN) allocations and TN Load limits for. PDES dischargers in the Neuse River
basin apply on a calendar year b
(b.)For any given calendar year, a tees be in compliance with the annual TN Load limit
in this Permit if:
(ii.) the permittee's annua c a less than or equal to its TN Load limit, or
(iii.) the permittee�e e member of a compliance association.
(c.) If the Permittee i t a co-permittee member of a compliance association and the Permittee's
cumulative annual ischarg exceeds the effective TN Load limit in this permit at any point
during the calendar ye Permittee is in violation of its TN Load limit, and each day of a
continuing violation shal institute 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.
Page 4 of 9

Permit NCO040606
(iv.) Application shall be sent to:
NCDWR/NPDES Wastewater Program
Attn: Neuse River Basin Coordinator
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 re,en's.
(iii.) If the permittee intends to join or leave a com association, the Division must
be notified of the proposed action in accorh the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper ficat,4vision will modify the
permit as appropriate and in acc nce ' state an federal program
requirements.
(B) Membership changes in a complian sociation become effective on January 1
of the year following moof t sociation's permit.
(C)
(£) The TN monitoring and
this Permit and are not
A. (4.) TOTAL NITROGEN A
[G.S. 143-215.1(b)
a. The following tabl s the Total itro en (TN) allocation(s) assigned to, acquired by, or
transferred to the Pe a in accordance with the Neuse River nutrient management rule (T15A
NCAC 02B .0234) and t tatus of each as of permit issuance. For compliance purposes, this table
does not supercede any TN 14it(s) established elsewhere in this permit or in the NPDES permit of
a compliance association of which the Permittee is a Co-Permittee Member.
this�ermit remain in effect until expiration of
membership in a compliance association.
ALLOCATION AMOUNT 1
ALLOCATION
TYPE
SOURCE
DATE
STATUS
Estuary
Discharge
(Ib/yr)
(lb/yr)
Assigned by Rule
12/7/97;
Base
(T15A NCAC
4/l/03
354
708
Active
02B .0234)
TOTAL
354
708
Active
Footnote:
1. Transport Factor = 50%
Page 5 of 9

Permit NCO040606
A. (5.) 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.(6.) ELECTRONIC REPORTING - DISCHAR
[G.S. 143-215.1 (b)]
Federal regulations require electronic submittal of all
reports. The final NPDES Electronic Reporting Rule
21, 2015.
RTS
(DMRs) and program
ctive on December
NOTE: This special condition supplements ors persedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits
• Section B. (11.) Signa yuire is
• Section D. (2.) R14orting
• Section D. (6.) Records R e
IRW
• Section E. (5�nitoring Reports
Section D. (2.) and Section E. (5.
The permittee shall redischarge (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 monthly 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
Page 6 of 9

Permit NCO040606
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the
completed reporting period. 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 Repo
Pretreatment Program Annual Repor
Clean Water Act (CWA) Section 311
The permittee may seek an electronic reporting wai,
Waiver from Electronic Reporting" section b low).
frorflfhe Division (see "How to Request a
a. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee in t identify the initial recipient at the time
of each electronic submission. T!Apermittee should use the EPA's website resources to identify the
initial recipient for the electronjdiTubmission. 0
Initial recipient of electronic NPDE formation from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA plement the NPDES program) that is the designated entity
for receiving electronic NPDES dat [se 40 CFR 127.2(b)].
EPA plans to establish a it t will also link to the appropriate electronic reporting tool for
each type of electronic subm n 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.
b. 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
Page 7 of 9

Permit NCO040606
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:
http://deq.nc.gov/about/divisions/water-resources/edmr
C. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
All eDMRs submitted to the permit issuing authority sha be sign a person described in Part II,
Section B. (I 1.)(a) or by a duly authorized representat of that pers s described in Part II,
Section B. (I 1.)(b). A person, and not a position, be�gated sig atory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing11MR
d submitting they DMR must obtain an eDMR user
account and login credentials to access the system. For more information on North
Carolina's eDMR system, registerin eDMR and obtaining an eDMR user account, please visit
the following web page:
http://deq.nc.gov/about/division /water-resourcesiedmr
E
Certification. Any peon 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 ACCEPTE
"I certify, under penalty of l at 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. "
d. Records Retention [Supplements Section D. (6.)]
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 9

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Aqua North Carolina, Inc.
Barclay Downs WWTP Facility
Receiving Stream: Neuse River Stream Index: 27-(20.7) Location
Sub -Basin: 03-04-02 HUC: 030202010705 (Not to scale)
Drainage Basin: Neuse River Basin Stream Class: WS-IV; NSW NPDES Permit NCO040606
Latitude: 350 46' 44" N Longitude: 78' 32' 15" W North Wake County