NC0078955_Draft Permit_20250909

JOSH STEIN
Governor
D. REID WILSON
Secretary
RICHARD E. ROGERS, JR.
Director
ATTN: Ian Stroud, WTP Manager
City of Dunn
PO Box 1065
Dunn, NC 28335
Dear Mr. Stroud,
NORTH CAROLINA
Environmental Qua/ay
September 9, 2025
Subject: Draft of NPDES Permit NCO078955
A.B. Uzzle WTP
Grade I Physical Chemical WPCS
Harnett County
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 a thorough understanding
of the information, conditions, and requirements it contains.
The draft permit renewal includes the following significant changes from the existing permit:
• The Supplement to Cover Sheet has been updated with the new max monthly average.
• Total Iron monitoring has been removed from Section A. (1.) as there is not a NC Water Quality Standard
for this parameter.
• Total Manganese monitoring has been removed from Section A. (1.) as this system is not designed to
remove manganese nor does the facility discharge to `Water Supply' receiving waters.
• The limits for Total Copper in Section A. (1) have been removed as a reasonable potential analysis (RPA)
did not show a reasonable potential to exceed water quality standards. However, the permittee needs to
consistently report data to the practical quantitative limit (PQL). Quarterly monitoring will be maintained.
• The limit for Turbidity has been removed as the receiving waters for this facility are not currently
impaired for turbidity.
• Reporting for Total Nitrogen (TN) now includes the constituent parameters used in calculating TN. Total
Kjeldahl Nitrogen (TKN) and Nitrate + Nitrite Nitrogen (NO3-N + NO2-N) have been added to the
effluent table in Section A. (1) with a corresponding footnote. The Sample Type for Total Nitrogen has
been updated from "Grab" to "Calculated".
• Updated Hardness sampling to Total as CaCO3 in the effluent table in Section A. (1).
• WET testing has been updated to Pass/Fail limit per current guidance for Conventional WTPs. Sections
A. (1) and A. (2) have been updated.
• The Nutrient Re -opener Special Condition (A. (3.)) has been updated to the most current language.
• Section A. (4) has been updated to reflect current federal requirements for Electronic Reporting of
Discharge Monitoring Reports.
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 1). 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
hops://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file.
D_E QJ� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1618 Mail Service Center I Raleigh, North Carolina 27699 1618
919.7079190

With this notification, the Division will solicit public comment on this draft permit by publishing a
notice in newspapers having circulation in the general Harnett 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. Your written comments are welcome, but they are not mandatory.
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 Caroline Robinson at [phone] or via e-mail at [e-mail].
Sincerely,
Sara Bassett
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES File
Fayetteville Regional Office [Laserfiche]
Operator Certification Program [Laserfiche]
Aquatic Toxicology Branch [Laserfche]

NPDES PermitNC0078955
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELH I NATION 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, the
City of Dunn
is hereby authorized to discharge wastewater from a facility located at the
A. B. Uzzle Water Treatment Facility
805 West "E" Street, Erwin
Harnett County
to receiving waters designated as Juniper Creek in the Cape Fear 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 October 31, 2030.
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 May 4, 2030 (180 days before the expiration of this permit).
Signed this day
Caroline Robinson
Compliance and Expedited Permitting Unit Supervisor
Division of Water Resources
By Authority of the Environmental Management Commission
Pagel of 8

NPDES Permit NC0078955
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.
The City of Dunn
is hereby authorized to:
1. Continue to operate a conventional water treatment plant with a discharge of treated filter backwash
wastewater. This water treatment plant currently has a design potable flowrate of 8 MGD and a
maximum, monthly average wastewater discharge of 0.207 MGD. The facility is located at A. B.
Uzzle Water Treatment Facility, at 805 West "E" Street, in Erwin, in Harnett County. Wastewater
treatment consists of:
• Lined storage Lagoon
• 9,030 linear feet of sludge drying beds
2. Discharge filter -backwash wastewater from said treatment works at the location specified on the
attached map into Juniper Creek [Stream Segment: 18-20-24], a waterbody currently classified C
waters within subbasin 03-06-13 [HUC: 0303000405] in the Cape Fear River basin.
Page 2 of 8

NPDES Permit NCO078955
PART I.
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of the 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:
EFFLUENT CHARACTERISTICS
Parameter Code
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
I Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow 50050
Continuous
Recording
Effluent
Total Suspended Solids C0530
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
pH 00400
>_ 6.0 s.u. and < 9.0 s.u.
2/Month
Grab
Effluent
Total Residual Chlorine 2 50060
28 µg/L
2/Month
Grab
Effluent
Turbidity 00070
Monitor & Report
2/Month
Grab
Effluent
Aluminum (µg/L) 01105
Monitor & Report
Quarterly
Grab
Effluent
Total Copper (µg/L) 01042
12.03 µg/L
16.69 µg/L
Quarterly
Grab
Effluent
Fluoride (µg/L) 00951
Monitor & Report
Quarterly
Grab
Effluent
Ammonia Nitrogen (mg/1) C0610
Monitor & Report
Quarterly
Grab
Effluent
Total Phosphorous (P) (mg/1) C0665
Monitor & Report
Quarterly
Grab
Effluent
TKN (mg/1) 3 00625
Monitor & Report
Quarterly
Grab
Effluent
NO3-N+NO2-N 3 (mg/1) 00630
Monitor & Report
Quarterly
Grab
Effluent
Total Nitrogen 3 (TN) (mg/1) C0600
Monitor & Report
Quarterly
Calculated
Effluent
Hardness -Total as CaCO3 (mg/L) "•5 00900
Monitor & Report
Quarterly
Grab
Effluent
Hardness -Total as CaCO3 (mg/Ly,' 00900
Monitor & Report
Quarterly
Grab
Upstream
Chronic WET Testing 6 TGP3B
Pass/Fail Limit
Quarterly
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR
system. See Condition A. (4.).
2. 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.
3. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
4. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals (copper).
5. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring
Page 3 of 8

NPDES Permit NCO078955
Coalition Program, sampling for instream hardness may be waived as long as the Monitoring coalition
agrees to sample hardness at the nearest upstream location, at a minimum frequency of quarterly, and the
Permittee has obtained approval from DWR-NPDES Permitting Unit that the upstream station being
monitored by the Coalition is representative of the receiving stream for this discharge. The Permittee is
responsible for submitting instream hardness test results with its permit renewal application package. If
Coalition membership is cancelled or the Coalition terminates instream hardness sampling at the
approved station, the Permittee will immediately notify the Division and resume sampling for instream
hardness, upstream of its discharge.
6. Ceriodaphnia dubia 7day pass/fail limit at 90% concentration. See Condition A. (2.) for toxicity testing
requirements. Toxicity testing should be performed during the months of March, June, September and
December.
All samples must be collected from a typical discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2.) CHRONIC TOXICITY PERMIT LEMT (QUARTERLY)
[15A NCAC 02B .0200] [15A NCAC 02B .0500 et seq]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration ofZ.
The permit holder shall perform at a minimum, guarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," (Revised December 2010, or
subsequent versions) or "North Carolina Phase 11 Chronic Whole Effluent Toxicity Test Procedure"
(Revised December 2010, or subsequent versions). The tests will be performed during the months of
March, June, September and December.These months signify the first month of each three-month
toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised -December 2010, or subsequent versions).
All toxicity testing results required as part of this permit condition will be entered electronically using
the Division's eDMR system for the months in which tests were performed, using the parameter code
TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3
(original) is to be sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, [e-mail].
Page 4 of 8

NPDES PermitNC0078955
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring
will be required during the following month. Assessment of toxicity compliance is based on the toxicity
testing quarter, which is the three-month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
A. (3.) PERMIT RE -OPENER: NUTRIENT MONITORING
[G.S.143-215.1(b)]
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in the North
Carolina Administrative Code at 15A NCAC 2H.0112 (b) (1) and 2H.0114 (a) and Part II sections B-12
and B-13 of this permit, the Director of DWR may reopen this permit to require supplemental nutrient
monitoring of the discharge. The purpose of the additional monitoring will be to support water quality
modeling efforts within the Cape Fear River Basin and shall be consistent with a monitoring plan
developed jointly by the Division and affected stakeholders. In addition, the results of water quality
modeling may require that limits for total nitrogen and total phosphorus be imposed in this permit upon
renewal.
A. (4.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G.S. 143-215.1 (b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DNMs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December
21, 2015.
Page 5 of 8

NPDES Permit NC0078955
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) intemet 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 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:
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.
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 Reports; and
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
Page 6 of 8

NPDES Permit NC0078955
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 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
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) Ml
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (I 1.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
Page 7 of 8

NPDES Permit NC0078955
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://dcq.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:
7 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 offrnes and imprisonment for knowing violations. "
5. 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
122.411.
Page 8 of 8

City of Dunn N
A.B. Uzzle WTP
NPDES Permit NCO078955
Facility Location
Receiving Stream: Juniper Branch Stream Class: C scale not shown
Stream Segment: 18-20-24 Sub -Basin M 03-06-13
River Basin: Cape Fear HUC: 0303000405 SCALE USGS Quad: Erwin
County: Harnett 1:24,000 35.325000-78.697220