NC0020648_Draft Permit_20260204

Dausign ErnCbpe UX AtEEF212-C31S4AF68984-6894541 D396E
JOSH STEIN
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D REID WILSON
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RICHARDE ROGERS. JR.
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February 2, 2026
Ms. Hope J. Woolard, Public Works Director
City of Washington
1399 W 2nd Street
Washington, North Carolina 27889
Subject:
Dear Ms. Woolard:
Draft NPDES Permit Renewal
Permit NCO020648
Washington WWTP
Beaufort County
Grade IV Biological WPCS
SIC Code 4952
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility. Please
review this draft carefully to ensure thorough understanding of the requirements and conditions it
contains. There are several changes from the existing permit, including the following:
Based on the 2025 readoption of the Tar -Pamlico wastewater rules set forth in 15A NCAC
02B .0733, some language changes were made to Special Conditions A.(6.) Annual Nutrient
Limits and A.(7.) Nutrient Allocations.
For clarity regarding instream monitoring requirements, Special Condition A.(2.) has been
added to the permit.
As the facility is limited pursuant to the Tar -Pamlico nutrient strategy, and to ensure data
are available for tracking nutrients and their impacts on the stream in the event the Town were
to choose to leave the TPBA, instream monitoring requirements for TKN, NO2+NO3, TN and
TP have been added to the permit at a monthly frequency [See Special Condition A.(2.)].
Based on Best Professional Judgement (BPJ) in consideration of the reasonable potential
analysis (RPA) showing a maximum predicted total chromium concentration equal to the
allowable discharge concentration for chromium VI, quarterly monitoring for total chromium
and chromium VI has been added to the permit [See A.(l .)].
Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards using a limited dataset (n < 8) with fewer than 2 values greater
than the allowable discharge concentration, quarterly monitoring for chlorodibromomethane.
Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards using a limited dataset (n < 8) with a max predicted value > 50%
than the allowable discharge concentration, quarterly monitoring for dichlorobromomethane.
Based on the reasonable potential analysis (RPA), selenium showed a maximum predicted
concentration exceeding the chronic concentration; however, due to elevated detection limits
and limited data, no reasonable potential was determined. Future monitoring is requested with
a maximum detection limit of 1 µg/L.
North C".. De,nr ni ofFmimnmrnml QuAt, IDirision of Water Resources
512Nurth Salisbury Strrei 11617\Ieil Senice Center I Releiph,Nonh Cmolina27699-1617
919.707.9000

Dori an Emelope ID: AtEEF212.C31&4AFS-59944W541n398E
The City of Washington reported Total Silver at less than detection, with detection levels
< 5.0 µg/L, in the Effluent Pollutant Scans and DMR results. The City',s allowable discharge
concentrations is 0.064tgALfforTotal `Silver.MkVM,s laboratory idantifu3s4heltaEgetlPraclic9l
Quantification Limit (PQL) for Total Silver as 1.0 µg/L. 15A NCAC 2B .0505 (e) (4) requires
that all test procedures must produce detection and reporting levels that are below the permit
discharge requirements and all data generated must be reported to the approved detection level
or lower reporting level of the procedure. If no approved methods are capable of achieving a
detection level below the permit discharge requirement (or allowable discharge concentration)
the method with the lowest detection level must be used. The City should use sufficiently
sensitive test methods for all pollutants, including when performing Effluent Pollutant Scans.
» A special condition to monitor effluent PFAS chemicals quarterly has been added to the
permit, to be effective six (6) months after EPA has a wastewater method in 40 CFR136
method published in the Federal Register [See Special Condition A.(8.) PFAS Monitoring
Requirements].
» Some of the wording has changed in Special Condition A. (3.), Acute Toxicity Permit
Limit, please review each paragraph carefully.
all Special Condition A. (4.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed (2027, 2028, and 2029). In addition, at the end
of the Special Condition, 2od species Toxicity Testing Requirements for municipal permit
renewals per Federal Regulations [40 CFR 122.210)(5)] have been added.
» 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,
2028.
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
httas:/1bit11y5ONFaL and can be viewed online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Beaufort County area, soliciting public comments on this draft permit.
Please provide any written comments you may have to the following: NCDEQ/DWR NPDES
Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 no later than 30 days after
receipt of 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 this draft
permit, please call me at [phone] or by email at [e-mail].
Hardcopy: NPDES Files
Sincerely,
OxusgM/C�M:
uw ,
Water Recourses, Engineer
NPDES Municipal Permitting Unit
North Carolina Department of Environmental Qm1n) I Divisim of Water Resources
512 North Salisbiay Street 1 1617 Mail Smioe Center I Raleigh, North Carolina 276%-1617
919.707.9000

Dowsign Envelope ID: AtEEF272-C37&4AF63994-6W454tD39SE
eCopy: US EPA Region 4
DWR/Washington Regional Office/Water Quality/David May
DWR/Operator Certification Program/Jeff Talbot & Renee V. Thompson
DWR/Ecosystems Branch/David Hill
DWR/Aquatic Toxicology Branch/Cindy Moore & Molly Nicholson
DWR/Municipal Permitting Unit/Keyes McGee & Natalie Gorensek
Nor0r Carolina Uepartmmt of Envirotmtental Quality I Division of Water Resourcm
512 Nath Salisbury Street 1 1617 Mail Sen im Cmter I Motif, Nonh Carolina 27699-1617

Permit NC0020648
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
(NPDES)
In compliance with the provisions of North Caroli
and regulations promulgated and adopted by
Commission, and the Federal Watef
City of N
is hereby authorized td%dis(
Washington
to receiving waters
effluent limitations
and IV hereof.�
in
2nd
1 Statute`143-215.1, other lawful standards
Carolina Environmental Management
Control Act, asame1nded, the
a facility located at
River Basin in accordance with the
conditions set forth in Parts I, II, III,
This permit sliall become effective....... ...'Month XX, 2026.
This permit and authorization toNdischarge shgl)expire at midnight on November 30, 2030.
Signed this day Ivlronth XX, 2026.1
DRAFT
Karen Preston, Municipal Permitting Unit Supervisor
Division of Water Resources
Page 1 of 14

Permit NC0020648
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As ofthis permit issuance effective date, 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 Washington
is hereby authorized to:
1. Continue to operate and maintain the Washington W WTP, an
the following components:
• Influent metering vault
• Mechanical bar screen
• Automatic aerated grit chamber
• Splitter box
• Aeration basin
• Activated sludge oxidation ditch
• Four secondary clarifiersewith scum removal and pi
• Five cell deep -bed denitrificatL n`sand filters wit\
• Dual chlorine contact chambers with flow so
• Sodium bisulfite,dechlorination\
• xeaeranont3asm�
• Lime storag lower
• Caustic soda`and pt
3.65 MGD facility consisting of
sludge return
nol storage/feed system
ypochlorite feed
2. Discharge from said treatment works at the location specified on the attached map via Outfall 001 into
the Tar River, classified C-NSW waters in the Tar -Pamlico River Basin and 03040101 HUC.
Page 2 of 14

Permit NC0020648
PART
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 13.65 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
Grade IV Biological Water Pollution Control System [I5A 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[ by the Permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITS_
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
1 Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow 50050
3.65 MGD
/ /
Continuous
Recording
I or E
Total Monthly Flow (MG) 82220
Monitor and Report
Monthly
Calculated
E
BOD, 5 day, 200CI C0310
13.1 mg/L
19.6 mp/L ,,
'
2/week4
Composite
I and E
Total Suspended Solids' C0530
30.0 mg/L
45.0'mg/Y
2/week4
Composite
I and E
NI% as N C0610
1.0 mg/L
/3.0 mg/L
2/week4
Composite
E
Fecal Coliform 31616
(geometric mean)
2001100 mL(
400/100 mL
\
�2/week4
\
Grab
E
Dissolved Oxygen 00300
Daily Average > 5.0 mg/I.'\
`Daily,
Grab
E
pH 00400
Between 6.0 and'9.0 Standard Units
Daily„ 'IS
Grab
E
Temperature (°C) 00010
( Monitor and'Report/
Daily v
Grab
E
Total Residual Chlorines 50060
�-, \ \17 µg/L
Daily
Grab
E
Conductivity (µmhos/cm) 00094
\ \ 'Momtor�and Report`
Daily
Grab
E
TKN (mg/L) _ 00625
\ Monitoraud•Report
Weekly
Composite
E
NOrN+NOz-N (mg(L) / 0630
\ 'Monitor end Report,
Weekly
Composite
E
Total Nitrogen I(mg/L) / % C06Q0
\Monito4 and'Report-
Weekly
Calculated
E
e QM6001
TN Load • QP600
Monitor and Report (lb/month)'
\52;054 Ib/yr
Monthly
Annually
Calculated
E
Total Phosphorus C0665
T
`\ Monitor end Report
Weekly
Composite
E
ve/ 'Qdf665
TP Load j Qy665`
�-Monitor and )teport(lb/month)
'9;40'7•lbi/yr
Monthly
Annually
Calculated
E
Chromium VI (pg/L) 01031,
, Monitor and Report
Quarterly
Composite
E
Total Chromium,(µg/L) 01034
Monitor and Report
Quarterly
Composite
E
Dichlorobromomethane (pg/L) \i2101
Monitor and Report
Quarterly
Grab
E
Chlorodibromometh_ane,(µg/L) 34306,
v Monitor and Report
Quarterly
Grab
E
PFAS (ng/L) voridble.
Footnote 9
Footnote 9
Grab
E
Acute Toxicity 10 \TGE6C,
Monitor and Report
Quarterly
Composite
E
Effluent Pollutant Scan 11 \ \/NGO%
Monitor and Report
Footnote I 1
E
Total Hardness11 as CaCO3 (mgib). 00900
Monitor and Report
Quarterly I Composite
E
Footnotes:
1. The pennittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A. (9.).
2. Sample Location: E— Effluent, I — Influent.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Twice per week sampling must occur on any two non-consecutive days during the calendar week.
Footnotes continued on the next page.
Page 3 of 14

Permit NC0020648
Footnotes continued from A.(1.) Effluent limitations and Monitoring requirements:
5. The facility shall monitor TRC when using chlorination for disinfection. The Division shall consider all effluent
total residual chlorine 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.
6. For a given wastewater sample, TN = TKN+NO3-N+NOa-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N and NOa-N are Nitrate and Nitrite Nitrogen, respectively.
7. TN Load and TP Load are the mass loads of TN and TP discharged by the permittee in a period of time. See
Special Condition A.(5.).
8. Compliance with these limits shall be determined in accordance with Special Condition A.(6.), Annual Limits for
Nutrients.
9. See Special Condition A.(8.).
10. Acute Toxicity (Pimephales promelas) P/F at 90% with testing in February, May, August and November. See
Special Condition A.(3.).
I
11. The permittee shall perform.three effluent pollution scans of rin&the to\qf this permit. See Special Condition
A.(5.). � \\
12. Effluent hardness shall be performed in conjunctiod with testing for hardness dependent metals (cadmium,
copper, lead, nickel, silver, and zinc).
There shall be no discharge
ing solids or vi
l
Page 4 of 14
in other than trace amounts.

Permit NC0020648
A.(2.) INSTREAM MONITORING REQUIREMENTS
[15A NCAC 0213.0500 et seq.]
Beginning on the effective date of this permit and lasting until the expiration date, the Permittee shall
perform instream sampling upstream and downstream of Outfall 001 as specified below:
PARAMETER Parameter Code
MONITORING' REQUIREMENTS
Measurement Frequency
Sample Type
Sample Location'
Dissolved Oxygen (mg/L) 00300
Variable'
Grab
U, D
Fecal Colifonn (#/100mL) 31616
Variable2
Grab
U, D
Temperature (°Q 00010
Variable' /
Grab
U, D
Conductivity (µmhos/em) 00094
Variable?/
Grab
U, D
TKN (mg/L) 00625
Mopltily,
Grab
U, D
NO3-N+NO2-N (mg/L) 00630
xonthly
\Grab
U,D
Total Nitrogen' (mg/L) C0600
/ Monthly
Calculated
U, D
Total Phosphorus (mg/L.) C0665
\ Monthly
Grab
U, D
Hardness4 -Total as CaCO3 (mg/L) 00900
Quarterly
Grab
U
Footnotes:
1. The permittee shall submit Discharge M ttno grin\ rts
system. See Special Condition A.(9.). \
2. Sample locations: U —Upstream at the G`nmesland Bridge
downstream samples shall be grab samples coflected`3/we
1/week during the remainder' ofthe year. InstreaT�samplit
the permittee's participation-in•the Tar-Pamlico\Basin Ass
cease, all instream sampling requirements are immediate17
3. For a given surface water -sample, TN �TKN + NO3�N
Kjeldahl Nitrogen, and NO3 Nand NO2- are Nitrate,and
4. The vermittee•shallsample instream hardness upstream`of
ctronically using NC DwR's MRapplication
D — Downstream at NC Highway 17. Upstream and
k,during June, July, August, and September and
requiremenis are provisionally waived in light of
ciation Should participation in the association
402-N, where TN is Total Nitrogen, TKN is Total
Nitrite Nitrogen, respectively.
the facility's discharge. The sample shall be
Page 5 of 14

Permit NC0020648
A.(3.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .02001 [15A NCAC 02B .0500 et seq]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity In A
Single Effluent Concentration" (Revised December 2010, or subsequent versions). The monitoring shall
be performed as a Fathead Minnow (Pimephales promelas) 24-hour static test. The effluent concentration
at which there may be at no time significant acute mortality is 90% (defined as treatment two in the
procedure document). 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 dischacgcbelow all treatment processes.
Should any single quarterly monitoring indicate a failure to meet -specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the monibs specified above.
U
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system for the month in which it was performed, usingahe parameter code TGE6B.
Additionally, DWR Form AT-2 (original) is to be sentio the following address:\
North Carolina Division of Resources
Water Sciences Section/Aquatic 'I'o \ o�ogy Branch
1621 Mail Service Center
Raleigh, NC 27 \ 9-1621
Or, results can be sent to the email, ATForms.ATB\fin deo.nc.eov.
Completed Aquatic Toxicity Test Forms shall tie filed,with the Water.Sciences Section no later than 30
days after the end of the/rel%o nt g period for which the report i's,made.v
Test data shall be complete,, mate, include all`supportm chem'�l/physical measurements and all
concentration/response,data, and be certified by laboratory supervisoryaand ORC or approved designate
signature. �� ) L �`
Total residual -chlorine of the effluent oxic\ sample mu\. st_be measured and reported if chlorine is
employed,for disinfection.of the waste stream��
Should there be no discharge o�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 commenNrea of the form. The report shall be submitted to the
Water Sciences Section at the address, cited above.
Should the permitteefail'to monitdr dbring a month in which toxicity monitoring is required, then
monthly monitoring will.begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above. 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 either these monitoring requirements 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 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.
Page 6 of 14

Permit NCO020648
A.(4.) ADDITIONAL MONITORING REQUIREMENTS FOR PERMIT RENEWAL
[G.S. 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: 2027,
2028, and 2029. 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.(3.) (ACUTE TOXICITY PASS/FAIL PERMIT LIMIT
(QUARTERLY))), 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
Chlorine (total residual, TRC) — - 50060 l,l-dichloroethyleni 34501 Bis (2-chloroisopropyl) ether
Dissolved oxygen _ - _00300 1,2-dichloropropme / ` C0541 Bis(2cthylhexyl) phthalate
Nitrate Nitrite - - - -- 00630 l,3-dicbloropropylene \ 7163 4-bromophenyl phenyl ether
Kjeldahl nitrogen 0062S Ethylbenze e 34371 Butyl benzyl phthalate
Oil and grease 00556 Methylbromide 3441`\ 2-chloronaphthalene
Phosphorus C0665 Methyl chloride 34418 \4= hl rophenyl phenyl ether
Total dissolved solids 70195 Methylene ctilond \ //''�) 34423 Elirysene
Hardness 0090(p-�1,1,2,2-tetrachloroettiene / 81549 Dr n- (phthalate
Antimony 010 Tetra\ oroethylene \\\ 34475 Di-n-octyl phthalate
Arsenic 01002 Toluene \ 340/0 Dibenzo(a,h)anthracene
Beryllium 01012 \,1 trtchlh oroe \e \\\34506 1,2-dichlorobenzene
Cadmium 01027 11,2-trichloroethane 345I1 1,3-dichlorobenzene
Chromium C\0034 Tn hlor ethyle e. 39180 1,4-dichlorobenzene
Copper 0104; Vinyl chloride 39175 3,3-dichlorobenzidine
Lead 01051� Acid-exrrrsclable conpounds: Diethyl phthalate
Mercury (Method 1631 E) COAER P-chloro-m-crcsol 34451 Dimethyl phthalate
Nickel '_� 01069� c� rophe¢ol\ 34586 2,4-dinitrotoluene
Selemu (PQL<t p;gi) 01`47 2;gichlorophen-oll 34601 2,6-dinitrotolume
Sit ver(PQL <-I /L) 0107 2 4-dime\lphhennool 34606 1,2-diphenylhydraane
TZ.hallium 0105\ 4,6-dinitro-o=cresol 34657 Fluoranthene
Cy c o 01091\ 4-di phenol nol 34596 Fluorene
Hexachl
C snide 00710 2� o henol 34591 Hexacldorobenzeae
Total phenolic compounds 32730 4-mtrophenol 34646 Hexachlorobutadiene
VolrsrJle oreaaic ca nmo ands: Pentachlorophenol 39032 Hexachlorocyclo-pentadime
Acrolein 34210 Phenol 34694 Hexachloroethane
Acrylonitrile /
✓34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene
nz Beene / 34030 Base -neutral compounds: Isophorone
Bromoform 32104 Acenaphthene 34205 Naphthalene
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine
Chlorodibromomethane 34306 Beazidine 39120 N-nitrosodimethylamine
Chloroethane 85811 Benzo(a)anthmcene C0526 N-nitrosodiphenylamine
2-chloroethyl vinyl ether 34576 Benw(a)pyrene 34247 Phenanthrene
Chlorofmra 32106 3,4 benzofluormthene 34230 Pyrene
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene
1,1-dichloroethme 34496 Benzo(k)tluoranthene 34242
1,2-dicliloroethme 32103 . Bis(2-chloroethoxy) methane 34278
Page 7 of 14
34273
34283
C0100
34636
34292
34581
34641
34320
39110
34596
34556
34536
34566
34571
34631
34336
34341
34611
C0626
34346
C0376
34381
C0700
C0701
34386
34396
34403
34408
34696
34447
34428
34438
34433
34461
34469
C0551

Permit NC0020648
(b.) Effluent Scan Reporting. Test results shall be reported electronically via eDMR by December
31 st 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
purmittee must at bewtr mn aomoletion.dithe!testiinithejOMRsyamm by entering'11"(or `W" for
parameter code NCO - 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.) 21-Species Toxicity Testing and Reporting.
(i.) In addition to the quarterly toxicity tests required in Condition A.(3.) (ACUTE TOXICITY
PASSIFAIL PERMIT LIMIT (QUARTERLY)), 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 Zed 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 (ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERL19); 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 21 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.
TheiRermittee,mey contact the!IDivision',s.Aquatic ToxicologylBmndh,at 919-743-8401 for
guidance on conducting the additional toxicity tests and reporting of the results.
Page 8 of 14

Permit NC0020648
A.(5.) CALCULATION AND REPORTING OF TOTAL NITROGEN AND TOTAL
PHOSPHORUS LOADS
[G.S. 143-215.1(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 (m x MG) to pounds
(ii.) Annual TN (or TP) Load (lb/yr) = Sum of the 12. MontWy.TN (or TP) Loads for the calendar
year
(b.) The Permittee shall report monthly Total
in the appropriate discharge monitoring r
results (lb/yr) with the December report 1
A.(6.) ANNUAL NUTRIENT LIMII�,c
[G.S. 143-215.1(b); 15A NCAC`
(a.) Total Nitrogen (TN) and Total Phc
in the Tar -Pamlico River basin are
(b.) For any given calendar year the PF
limit in this Permit
Total PhospWus results (mg/L and lb/mo)
month and shall report each calendar year's
limits for NPDES dischargers
ndar year basis.
h the annual TN (or TP) Load
(i.) the Permittee's annual TN (or TP) Load' is less than or equal to the effective limit, or
(ii.) the Permittee i' .a co-permittee.Member of the Tar -Pamlico Basin Association (the
/Association group�NPl �S-P.e\ "C00� 02.
(c.) I�the permittee,is not a co-permittee member of the -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 TN410r TP, Load limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocations. l ti
(i.) Allowable�changes include those resulting from purchase of TN (or TP) offset credits from an
authorized mitigation banker, the Division of Mitigation Services, or other source allowed
under applicabl' .regulations; purchase, sale, trade, or lease of allocation between the
Permittce and other dischargers; regionalization; and other transactions approved by the
Division.
(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.
Page 9 of 14

Permit NCO020648
(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 the Association on January 1 of a given year, its
TN and TP discharges during that year are governed by the 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 the Association, the Division must be notified of the
proposed action in accordance with the procedures defined in the Association's group 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) (Chengesiinithe Amociation's TN or TP:allocation(s).ant111imit(s) due!to a dhangeiin
membership become effective on January 1 of the year following modification of the
association's permit.
(f.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout
the tern of the Permit and are not affected by the Pernittee's membership in the Association.
A.(7.) TOTAL NITROGEN AND TOTAL PHOSPHORUS ALLOCATIONS
[15A NCAC 02B .0733]
(a.) The following tables list the Total Nitrogen (TN) and Total Phosphorus (TP) allocations assigned
to, acquired by, or transferred to the Permittee in accordance with the Tar -Pamlico nutrient
management rule (15A NCAC 02B .0733) and the status of each as of permit issuance. The
allocations in these tables are not enforceable limits nor do they supersede any TN or TP limit
established elsewhere in this permit or in the NPDES permit of a compliance association of which
the Permittee is a co-permittee Member (i.e. Tar -Pamlico Basin Association, NCC000002).
Total Nitrogen Allocation
ALLOCATION
ALLOCATION
SOURCE
DATE
AMOUNT
STATUS
TYPE
Ib/yr
Base Allocation
Assisted by Rule (15A NCAC 02B .0733)'.
7/12025
52,054
Active
Total Phosphorus Allocation
ALLOCATION
ALLOCATION
SOURCE
DATE
AMOUNT
STATUS
TYPE
Ib/yr
Base Allocation Assiped by Rule (15A NCAC 02B .0733)
L=
9,407
Active
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Permit NCO020648
(b.) Any addition, deletion, or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in 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.
A.(8.) PFAS MONITORING REQUIREMENT
[G.S. 143-215.1(b.)]
This reporting requirement for the per- and polyfluoroalkyl substances (PFAS) parameters listed under
Table 1 of EPA Method 1633, Revision A (1633A) takes effect the first full calendar quarter following six
(6) months after EPA publishes the method under 40 CFR Partin the Federal Register. Monitoring
will be at a quarterly frequency.
Find the current parameters listed under Table 1 of Metho/1633A A\ alysis of Per- and Polyfluoroalkyl
Substances (PFAS) in Aqueous, Solid, Biosolids, and Tissu Samples.by LC-MS/MS (EPA, December
2024) at: \\
https://www.el
compliant.pdf
A.(9.) ELECTRONIC REPORTING
[G.S. 143-215.1 (b)]
Federal regulations require electronic su
reports. The final NPDES Electronic Re
2015.
NOTE: This special
permit (Standard Ca
1.
1.)
D. (6.)
E. (5.)
The permittee
Discharge Mc
or
reports (DMRs) and program
ne effective on December 21,
sections within Part II of this
monitoring data electronically using the NC DWR's Electronic
2) 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:Hdeq.ne.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:
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Permit NC0020648
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
`Bee "How to Request;a\Waiver'froni EleatronicIRgporting",rection 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, 2028, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
a 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 reportingwaivertfromtthe'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�dlectronic submission. The.permittee should.use'the EP1A�\website resources to identifytthe
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 wdll. IlrlformationconlEPA's NR>}}EB
Electronic Reporting Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/nati onal-pol lutant-di scharge-el im ination-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 Renortine
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
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Permit NC0020648
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.--SienatorvReouirements ISumnlements Section B.
5.
All-eDMRs submitted to the permit issuing authority
Section.B. (I I.)(a) or by a duly authorized representz
Section B:.(I1.)(b). A person, and not a position, me
reporting purposes.
For eDMR submissions, the person signing
account and login credentials to access the
eDMR system, registering for eDMR and o
web page:
Certification. Any
the following certii
WILL BE ACCEP'
"I certify, under
am award that there are
oossibilituoffines and h
The permittee shall,
These records or co
This period may be
an
)e signed by a person described in Part II,
f that,person as described in Part II,
lelegated si\must
gnatory authority for eDMR
the DMR obtain an eDMR user
Formore information on North Carolina's
¢R user account, please °visit the following
s eDMR system shall make
'S OF CERTIFICATION
w, th'at this document and all attachments were prepared under my
corder�nc ith a system designed to assure that qualified personnel
`he`nformahonn submitted Based on my inquiry ofthe person or
em or -those personsirectly responsible for gathering the information,
to thgest ofmy knowledge and belief, true, accurate, and complete. I
ficant penalties for submitting false information, including the
onment for khowino violations. "
s'of all Discharge Monitoring Reports, including eDMR submissions.
maintained for a period of at least 3 years from the date of the report.
request of the Director at any time [40 CFR 122.41].
Page 13 of 14

Permit NCO020648
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Page 14 of 14