NC0026042_Permit (Issuance)_20231102

DocuSign Envelope ID:4777E847-FE71-4FD6-8666-BE9F127E6B76
of,STATE q,
ROY COOPER
Governor
ELIZABETH S.BISER
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
November 2, 2023
Mr. Chris Roberson, Town Manager
Town of Robersonville
P.O. Box 487
Robersonville,North Carolina 27871
Subject: Final NPDES Permit Renewal
Permit NC0026042
Robersonville WWTP
Martin County
Grade IV Biological WPCS
SIC Code 4952
Dear Mr. Roberson:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly,we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
The following change was made to the second draft sent to you on September 11, 2023.
• Based on the permit effective date,the three sampling years for the Effluent Pollutant Scans
was adjusted to 2025, 2026, and 2027 to reflect the three previous years before permit
expiration.
• The map was updated to show instream monitoring locations.
The final permit maintains the following significant changes identified in the letter sent on
September 11, 2023:
• To provide an opportunity for the Town to develop a plan to assess sources of total copper in
order to come in compliance with the final limits in Section A. (1.), a 3-year schedule of
compliance with an option to conduct a Water Effects Ration (WER) study has been added to
the permit [See Special Condition A.(8.) Schedule of Compliance for Total Copper
Limitations].
• The PFAS special condition was updated to reflect the EPA 4th Draft Method 1633, released
July 2023 [See A.(9.)].
• Based on the facility's receiving industrial wastewater and monitoring requirements under 15A
NCAC 02B .0508, effluent Conductivity monitoring has been added to the permit at a daily
frequency [See A.(1.)].
North Carolina Department of Environmental Quality l Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
0118.,«n a i w 9 I9.707.9000

DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E6B76
• Based on DWR Instream Conductivity Monitoring Guidance, the facility discharges domestic
and industrial wastewater, so instream conductivity monitoring has been added to the permit
[See A.(1.)].
• Based on the reasonable potential analysis(RPA) showing reasonable potential to violate state
water quality standards using recent hardness data, Total Copper limits have been revised [See
A.(1.)].
• Based on the RPA predicting a maximum effluent lead concentration that is greater than half
of the allowable discharge concentration based on state water quality standards, quarterly
monitoring for Total Lead has been added to the permit [See A. (1.)].
• Based on exceedances of parameters related to industrial users, a compliance schedule to
reactivate the facility's pretreatment program was added to the permit [See A.(7.)].
• Based on recommendations by EPA guidance on December 5, 2022, quarterly effluent
monitoring for PFAS chemicals with a delayed implementation has been added to the permit
[See A.(1.) and Special Condition A.(9.) PFAS Monitoring Requirements].
• Some of the wording has changed in Special Condition A.(2.), Chronic Toxicity Permit Limit,
please review each paragraph carefully.
• Special Condition A.(6.) has been modified to include the specific three years in which the
Effluent Pollutant Scan shall be performed (2024,2025, and 2026).
• A notation was made concerning the Electronic Reporting Rule—NPDES Electronic Reporting
Rule—Phase 2 Extension. EPA extended the Phase 2 deadline to December 21, 2025.
• Federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and program reports. The requirement to continue reporting discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR) internet
application has been added to your NPDES permit [See Special Condition A. (10.)].
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty(30)days following receipt of this letter.This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings(6714 Mail Service Center,Raleigh,North Carolina 27699-6714).Unless
such demand is made, this decision shall be final and binding.
Pretreatment updates in response to NPDES permit renewal:
• On May 29,2024, 180 days after the effective date of this NPDES permit renewal,the City
is required to submit to the Division a written technical evaluation of the need to revise
local limits (i.e., an updated IWS/HWA-AT/L-STMP, or documentation of why is not
needed).This action may include revising,updating,or adding to the list of SIUs regardless
of timeframe.
o Submit the updated Long-Term Monitoring Plan(LTMP)
• If there are new industries within the service area, submit an updated
Industrial Waste Survey (IWS)
• Review pollutants of concern (POCs) and update the LTMP to reflect
pollutants in industrial user permits(IUPs) and sludge management permit.
o As part of the local limits assessment, please submit the updated Headworks
Analysis (HWA).
) North rolina Department of ironml Quality I Division of Water Resources� 512 NorthCa Salisbury Sveet I161Env1 Mail Serviceenta Center I Raleigh.North Carolina 27699-161 I
0 tai OuvN �/ 919.707.9000

DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E6B76
The NPDES standard conditions (Parts II, III, and IV) 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.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental regulations.
at (919)If you have anyquestions concerningthispermit, please contact GaryPerlmutter
707-
3611 or via email at [e-mail].
Sincerely,
, —nAA,DocuSigned by:
A `t I'.d L ,YAW.�VNt f,tit
—C464531431644FE..
for Richard E. Rogers, Jr., Director
Division of Water Resources,NCDEQ
Hardcopy: NPDES Files
eCopy: US EPA Region 4
DWR/Washington Regional Office/Water Quality/Robert Tankard
DWR/Aquatic Toxicology Branch/Cindy Moore
DWR/Municipal Permitting Unit /Keyes McGee
Envirolink, Inc. /Andrew White and Daniel Sears
D--
ii) North Carolina Department of Environmental Qualiry I Division of Water Resources
512 North Salisbury Street I1611 Mail Service Center I Raleigh.North Carolina 27699-1611
919.707.9000
Dea rbuNo al lnvYonnmW eWl"h

DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E6B76
Permit NC0026042
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,the
Town of Robersonville
is hereby authorized to discharge wastewater from a facility located at the
Robersonville Wastewater Treatment Plant
1149 Rogerson Road
Robersonville,NC 27871
Martin County
to receiving waters designated as Flat Swamp in the Tar-Pamlico River Basin
in accordance with the effluent limitations, monitoring requirements,and other applicable conditions set
forth in Parts I, II, III, and IV hereof.
This permit shall become effective December 1,2023.
This permit and authorization to discharge shall expire at midnight on November 30, 2028.
Signed this day November 2,2023.
p—DocuSigned byy:,`
A&o
"—C464531431644FE..
for Richard E. Rogers,Jr.,Director
Division of Water Resources
By Authority of the Environmental Management
Commission
Page 1 of 15

DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E6B76
Permit NC0026042
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.
Town of Robersonville
is hereby authorized to:
1. Continue to operate and maintain the wastewater treatment works identified on the Cover,an existing
1.8 MGD facility consisting of the following components:
• Mechanical bar screen
• Influent pump station
• Aerated Grit Chamber
• Two(2)2-stage aerobic selector tanks
• Two(2)anoxic tanks
• Aeration tanks(Dual oxidation ditches)
• Internal recycle pumps from oxidation ditches to anoxic tanks
• Six(6)secondary clarifiers
• Aqua Aerobic Disc Filter
• Three(3)chlorine contact chambers
• Dechlorination
• Post aeration system
• Aerated sludge digester and holding tank
2. Discharge from said treatment works at the location specified on the attached map via Outfall 001 into
Flat Swamp, classified C, Sw,NSW waters in the Tar-Pamlico River Basin and 03020103 HUC.
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DocuSign Envelope ID:4777E847-FE71-4FD6-8668-5E9F127E6B76
Permit NC0026042
PART I
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 11.8 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning on the effective date of the permit and lasting until permit expiration,
the Permittee is authorized to discharge treated municipal and industrial wastewater from Outfall
001. Such discharges shall be limited and monitored 1 by the Permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER
Monthly Weekly Daily Measurement Sample Sample
Parameter Code Average Average Maximum Frequency Type Location 2
Flow 50050 1.8 MGD Continuous Recording I or E
Total Monthly Flow,MG 82220 Monitor and Report Monthly Calculated E
BOD,5 day,20°C 3 C0310 5.0 mg/L 7.5 mg/L Daily Composite I and E
Total Suspended Solids 3 C0530 30.0 mg/L 45.0 mg/L Daily Composite I and E
NH3 as N C0610 1.1 mg/L 3.3 mg/L Daily Composite E
Dissolved Oxygen 00300 Daily Average>_6.0 mg/L Daily Grab E
Fecal Coliform 31616 200/100 mL 400/100 mL Daily Grab E
(geometric mean) _
Total Residual Chlorine 4 50060 19 µg/L Daily Grab E
pH 00400 Between 6.0 and 9.0 Standard Units Daily Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
Conductivity(µmhos/cm) 00094 Monitor and Report Daily Grab E
TKN(mg/L) 00625 Monitor and Report Weekly Composite E
NO3-N+NO2-N(mg/L) 00630 Monitor and Report Weekly Composite E
Total Nitrogen(TN)5(mg/L) C0600 Monitor and Report Weekly Calculated E
QM600 Monitor and Report(lb/month) Monthly
TN Load 6, Calculated E
QY600 25,671 lb/yr Annually
Total Phosphorus(TP)5(mg/L) C0665 Monitor and Report Weekly Composite E
QM600 Monitor and Report(lb/month) Monthly
s
TP Load Calculated E
QY600 4639 lb/yr Annually
Total Hardness(as CaCO3)8 00900 Monitor and Report Quarterly Composite E
(mg/L)
Total Copper interim limits 9 01042 13.1 µg/L 17.8 µg/L Monthly Composite E
Total Copper final limits 9 01042 9.8 µg/L 13.0 µg/L Monthly Composite E
Total Lead(µg/L) 01051 Monitor and Report Quarterly Composite E
Chronic Toxicity 1° TGP3B Monitor and Report Quarterly Composite E
Effluent Pollutant Scan 11 NC01 Monitor and Report Footnote 11 Footnote 11 E
PFAS(ng/L)12 Various Monitor and Report Quarterly Grab E
Total Hardness(as CaCO3)8 00900 Monitor and Report Quarterly Grab U
(mg/L)
Dissolved Oxygen(mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature(°C) 00010 Monitor and Report Variable2 Grab U and D
Conductivity(µmhos/cm) 00094 Monitor and Report Variable2 Grab U and D
Footnotes:
1. The Permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See
Special Condition A.(10.).
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uocuSign Envelope ID:4///E84/-I-E/1-41-D6-8668-BE9F12/E66/6
Permit NC0026042
Footnotes(continued):
2. Sample locations:I=Influent,E=Effluent,U=Upstream at NCSR 1158(3`d Street),D=Downstream at NCSR 1505(Flat
Swamp Church Rd).Upstream and downstream samples shall be grab samples collected 3/week during June,July,August,
and September and 1/week during the remainder of the year.Instream sampling requirements are provisionally waived in light
of the Permittee's participation in the Tar-Pamlico River Basin Association.Should participation in the association cease,all
instream sampling requirements are immediately reinstated.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the respective influent
value(85%removal).
4. The facility shall monitor TRC when using chlorination for disinfection.The Division shall consider all effluent total residual
chlorine values reported below 50 µg/1 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.
5. 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.
6. TN Load is the mass load of TN discharged by the permittee in a period of time.See Special Condition A.(3.).
7. Compliance with these limits shall be determined in accordance with Special Condition A.(4.), Annual Limits for Total
Nitrogen and Total Phosphorus.
8. Effluent hardness shall be performed in conjunction with testing for hardness dependent metals(cadmium,copper,lead,nickel,
silver, and zinc). The Permittee shall sample instream hardness upstream of the facility's discharge. The sample shall be
representative of the hardness in the stream.
9. The Permittee shall follow the Total Copper compliance schedule detailed in Special Condition A.(8.).The Permittee shall
comply with the interim limits until the final limits become effective.
10. Chronic Toxicity (Ceriodaphnia dubia) P/F at 90% with testing in February, May, August, and November. See Special
Condition A.(2.).
11. The permittee shall perform three effluent pollution scans during the term of this permit.See Special Condition A.(6.).
12. See Special Condition A.(9.).
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
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DocuSign Envelope ID:4///E84/-FE/1-4F-Db-8668-BE91-12/E6BY6
Permit NC0026042
A.(2.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B .0200, .0500 et sect]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality
to Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum,quarterly monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," (Revised December 2010, or
subsequent versions) or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised December 2010, or subsequent versions). The tests will be performed during the months of
February, May, August, and November. 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].
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.
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DocuSign Envelope IL):41//E84/-I-E/1-4FU6-8668-8E91-12/EbB/b
Permit NC0026042
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.) CALCULATION AND REPORTING OF TOTAL NITROGEN AND TOTAL
PHOSPHORUS LOADS—TAR-PAMLICO
[NCGS 143-125.1(b)]
(a.) The Permittee shall calculate and report monthly and annual TN (or TP)Loads as follows:
(i.) Monthly TN(or TP)Load(lb/mo)=TN(or TP) x TMF x 8.34
where:
TN(or TP) = the average Total Nitrogen (or Total Phosphorus) 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(or TP) Load(lb/yr)= Sum of the 12 Monthly TN(or TP)Loads for the calendar
year
The Permittee shall report monthly Total Nitrogen and Total Phosphorus results (mg/L and lb/mo) in the
appropriate discharge monitoring report for each month and shall report each calendar year's results(lb/yr)
with the December report for that year.
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DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E6B76
Permit NC0026042
A.(4.) ANNUAL NUTRIENT LIMITS—TAR-PAMLICO
[NCGS 143-125.1(b)]
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES dischargers
in the Tar-Pamlico River basin are annual values and apply on a calendar year basis.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN(or TP)Load
limit in this Permit if:
(i.) the Permittee's annual TN(or TP)Load is less than or equal to the effective 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 (or TP) discharge exceeds the effective TN (or TP) Load limit in this permit
at any point during the calendar year, the permittee is in violation of its TN(or TP)Load limit, and
each day of a continuing violation shall constitute a separate violation.
(d.) The TN(or TP)Load limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocations.
(i.) Allowable changes include those resulting from purchase of TN(or TP)allocation from an
authorized mitigation banker, the Ecosystem Enhancement Program, or other source
allowed under applicable regulations;purchase, sale,trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division and consistent with the Tar-Pamlico River Basin Association Agreement, as
revised.
(ii.) The Permittee may request a modification of the TN (or TP) Load limit in this Permit to
reflect allowable changes in its allocation(s).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 (or TP) 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.) Any requests for modification should be sent to:
NCDEQ/DWR/NPDES Wastewater Program
Attn: Tar-Pamlico 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 on January 1
of a given year, its TN and TP discharges during that year are governed by that association's group
NPDES permit and the 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 and TP 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.
The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout the term
of the Permit and are not affected by the Permittee's membership in a compliance association.
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DocuSign Envelope ID 4///E84/-FE/1-4FD6-8668-BE91-12/E6B/6
Permit NC0026042
A.(5.)TOTAL NITROGEN AND TOTAL PHOSPHORUS ALLOCATIONS—TAR-PAMLICO
[NCGS 143-215.1(b)]
(a.) Total Nitrogen(TN)and Total Phosphorus(TP)allocations represent the maximum TN and TP loads
that a discharger or group of dischargers is potentially allowed under the Tar-Pamlico nutrient
management strategy. Allocations are not enforceable limits but are the basis for TN and TP limits
established in individual or group NPDES permits.
(b.) The allocations originally assigned to the Tar-Pamlico Basin Association members total 891,271
pounds/year (404,274 kg/year) TN and 161,070 pounds/year (73,060 kg/year) TP. These group
allocations have been divided among the members in proportion to the maximum permitted flow in
each member's permit;that is,
Individual Permitted Flow(MGD)
Individual Allocation (TN or TP) = Total Permitted Flow,TPBA(MGD) x Group Allocation,TPBA(TN or TP)
(c.) The following table lists, for information purposes only, the TN and TP allocations assigned to,
acquired by, or transferred to the Permittee in accordance with the Tar-Pamlico River Basin Phase
IV Agreement. Applicable TN or TP limits are established in the Effluent Limitations conditions of
this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-
Permittee Member.
ALLOCATION ALLOCATION AMOUNT
TYPE SOURCE DATE STATUS
(Ib/yr) (kg/yr)
Tar-Pamlico River Basin
Total Nitrogen 7/9/2015 25,671 11,644 Active
Phase IV Agreement
Total Phosphorus Tar-Pamlico River Basin 7/9/2015 4,639 2,104 Active
Phase IV Agreement
(d.) Any addition,deletion,or modification of the listed allocation(s)(other than to correct typographical
errors)or any change from Reserve 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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DocuSign Envelope IL):4///E84/-FE11-4FU6-8668-BE91-12/E6B16
Permit NC0026042
A.(6.) ADDITIONAL MONITORING REQUIREMENTS FOR PERMIT RENEWAL
[NCGS 143-215.1(b)]
(a.) Effluent Pollutant Scans. The Permittee shall perform a total of three(3) Effluent Pollutant Scans
for all parameters listed below. One scan must be performed in each of the following years: 2025,
2026, and 2027. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be
sufficiently sensitive to determine whether parameters are present in concentrations greater than
applicable standards and criteria. Each annual sample shall coincide with one quarterly toxicity test
each year (See Condition A. (2.) CHRONIC TOXICITY PERMIT LIMIT) and each must be
collected in a different calendar quarter to represent seasonal variation[i.e.,do not sample in the same
quarter every year]. Unless otherwise indicated,metals shall be analyzed as"total recoverable."
Ammonia(as N) C0610 Trans-1,2-dichloroethylene 34546 Bis(2-chloroethyl)ether 34273
Chlorine(total residual,TRC) 50060 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate C0100
Nitrate/Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver(PQL<1 ug/L) 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile orranic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
Page 9 of 15

DocuSign Envelope ID:4///E84/-f E/1-4FDb-8668-BE9f 12/Ebb(6
Permit NC0026042
(b.) Effluent Scan Reporting. Test results shall be reported electronically via eDMR by December
31st of each designated sampling year,except that, subject to prior written approval by the Director,
results can be reported on DWR Form DMR-PPA-1 or other form approved by the Director. The
permittee must at least report completion of the test in the eDMR system by entering"1"or"Y"for
parameter code NC01 -Annual Pollutant Scan. If written reports are approved,the report shall be
submitted to the following address:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES_WW-EDMR-
Supplemental-Form
(c.) 2°d-Species Toxicity Testing and Reporting.
(i.) In addition to the quarterly toxicity tests required in Condition A. (2.)CHRONIC TOXICITY
PERMIT LIMIT, the Permittee shall perform and report the results of four (4) toxicity tests
using the same test methods using a second species of test organism suitable to the tests being
conducted.
(ii.) The 2nd species toxicity tests shall be conducted either:
(A) Once per quarter in a single 12-month period(four samples);if this option is chosen,the
sample for each 2nd species test shall coincide with the quarterly samples collected for
(CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY));or
(B) Once per 12-month period in the four-and one-half year period prior to the scheduled
application for permit renewal (four samples); if this option is chosen,three of the
samples for the 2nd species test shall coincide with those for the annual effluent scans and
the coincident quarterly toxicity test, and each of the four annual samples shall be
collected in a different calendar quarter in order to represent seasonal variation.
(iii.) The results of the toxicity tests shall be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Or,results can be sent to the email,[e-mail].
(iv.) Results of the 2nd species tests shall also be summarized in Part E(Toxicity Testing Data)of
EPA Municipal Application Form 2A when submitting the permit renewal application to the
NPDES Wastewater Program.
The Permittee may contact the Division's Aquatic Toxicology Branch at 919-743-8401 for
guidance on conducting the additional toxicity tests and reporting of the results.
Page 10 of 15

DocuSign Envelope ID:4777E847-FE71-4FD6-8668-BE9F127E61376
Permit NC0026042
A. (7.) SCHEDULE OF COMPLIANCE FOR REINSTATEMENT OF PRETREATMENT
PROGRAM [NCGS 143-215.1(b)]
a) Within one(1)month of the effective date of the permit the permittee shall submit to the Division
a Short-Term Monitoring Plan(STMP).
b) Within one(1)month of the effective date of the permit the permittee shall begin implementation
of the STMP. Monitoring shall take place for one year, and all data shall be submitted to the
Division within 15 months of the start of data collection.
c) Within three(3)months of the effective date of the permit the permittee shall submit to the Division
a Sewer Use Ordinance(SUO)&Enforcement Response Plan(ERP).
d) Within six(6)months of the effective date of the permit the permittee shall submit to the Division
an Industrial Waste Survey(IWS).
e) Within fifteen (15) months of the effective date of the permit the permittee shall submit to the
Division a completed design-based Headworks Analysis (HWA) for development of local permit
limits for Significant Industrial User(s)(SIUs).
f) Within fifteen (15) months of the effective date of the permit the permittee shall issue local
Industrial User Permit(s)(IUPs)(using the limits allocations from the HWA).
g) Within eighteen (18) months of the effective date of the permit the permittee shall submit all
documents necessary to reinstate a pretreatment program per 15A NCAC 02H .0906.
A.(8.) SCHEDULE OF COMPLIANCE FOR TOTAL COPPER LIMITATIONS
[NCGS 143-215.1 (b)]
This compliance schedule includes the option for pursuing a Water Effect Ratio (WER) study for
developing site-specific limitations and compliance with the Total Copper limits.
1. If the Permittee wishes to conduct a WER study to develop site-specific Total Copper limitations,
then.by June 2,2024,the Permittee shall submit to the Division of Water Resources a Water-Effect
Ratio(WER)study plan for approval.
a. Within eighteen (18) months of the WER study plan approval by the Division, the
Permittee shall submit to the Division a report summarizing the results of the WER study.
b. If the WER study results in site-specific Total Copper limits,the Permittee shall submit to
the Division a permit modification request to include the WER-derived limits subject to
review and approval by the Division and the appropriate permit modification process.
c. The final Total Copper limits based on the WER-derived limits,if approved,will be placed
into effect immediately with the permit modification and all remaining schedule items will
be removed.
2. If the Permittee does not submit a WER study plan by December 1,2024,then the Permittee shall
follow the Compliance Schedule outlined below [replacing the schedule in section A. (8.) item 1.
above] and substitute the dates for one,two and three years from the permit effective date:
a. By December 1, 2024, the Permittee shall submit to the Division of Water Resources a
Corrective Action Plan(CAP) for Division approval, summarizing the strategy or actions
to be taken to achieve compliance with the final Total Copper limitations listed in Section
A. (1.). This plan will include specific dates for completion or implementation of each
action.
b. By December 1, 2025, the Permittee shall submit a report to the Division summarizing
actions taken in accordance with the Action Plan.
c. The Permittee shall achieve compliance with Total Copper limitations specified in Section
A. (1.)by December 1,2026.
Page 11 of 15

L)ocuSign Envelope ID.4//IE847-FE/1-41-Db-8668-BE9F12IE6B/6
Permit NC0026042
Upon approval of the CAP by the Division,the report and actions become an enforceable part of this permit.
The Division can reopen this permit to implement interim or alternative limits based on studies that
demonstrate an interim or alternate limit is appropriate. Any modifications to the schedule shall be
requested to the Division at least ninety (90) days before the deadline. Modifications to the schedule in
excess of four months will be subject to public notice.
The WER Study Plan, CAP and all reports shall include the owner's name, NPDES permit number and
Permittee contact person,and shall be submitted to:
(1)NCDEQ/Division of Water Resources (2)NCDEQ/Division of Water Resources
NPDES Permitting Washington Regional Office
1617 Mail Service Center 943 Washington Square Mall
Raleigh,NC 27699-1617 Washington,NC 27889
A.(9.)PFAS MONITORING REQUIREMENT [NCGS 143-215.1(b)]
This reporting requirement for the per- and polyfluoroalkyl substances (PFAS) parameters listed under
Table 1 of the Final Method 1633 takes effect the first full calendar quarter following six(6)months after
EPA publishes a 40 CFR Part 136 Final PFAS Method for wastewater in the Federal Register. Monitoring
will be at a quarterly frequency.
Find the current parameters listed under Table 1 of the 4th Draft Method 1633 Analysis of Per- and
Polyfluoroalkyl Substances(PFAS)in Aqueous, Solid,Biosolids,and Tissue Samples by LC-MS/MS at:
https://www.epa.gov/system/files/documents/2022-
12/3rd%20Draft%20Method%201633%20December%202022%2012-20-22 508.pdf
A.(10.) ELECTRONIC REPORTING-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.)(all
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR) internet application.
Page 12 of 15

DocuSign Envelope ID:4/77E84/-FE71-4FD6-8668-13E9I 12IEEE/6
Permit NC0026042
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
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.
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.
Page 13 of 15

DocuSign Envelope ID:4///E84/-1-E/1-4FDb-8668-BE91-127E6B76
Permit NC0026042
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.)(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 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 14 of 15

DocuSign Envelope ID:4777E841-FE71-4FD6-8668-BE9F12(E6B76
Permit NC0026042
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Stream Class:C-Sw NSW 8-Digit HUC: North SCALE 1:24,000
Basin:Tar Pamlico 03020103
Page 15 of 15