NC0020389_Draft Permit_20201110

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Governor
MICHAEL S.REGAN .,,
Secretory
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
November 10, 2020
Mr.Frederick D.Nelson,Town Manager
Town of Benson
303 E. Church Street
Benson,North Carolina 27504
Subject: Draft NPDES Permit Renewal
Permit NC0020389
Benson WWTP
Johnston County
Grade IV Biological WPCS
SIC Code 4952
Dear Mr.Nelson:
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:
• As the chemical feed systems for alum/lime are no longer in use, it has been removed
from the facility components list on the Supplement to Cover Sheet.
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards, the monitoring requirements for copper and zinc have
been removed from the permit [See A. (1)].
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards,total nickel limits have been added to the permit and the quarterly
monitoring requirement has been changed to monthly monitoring [See A.(1)].
• The NC 2007-2014 Water Quality Standard(WQS)Triennial Review was approved by the
NC Environmental Management Committee (EMC) on November 13, 2014. The US EPA
subsequently approved the WQS revisions on April 6, 2016 with some exceptions. The NC
Division of Water Resources NPDES Permitting Unit is required to implement the new
dissolved metal standards in all permits public noticed after April 6,2016. The new standards
for most metals include acute standards. Further, the freshwater standards for several metals
are expressed as the dissolved form of the metals, and seven metals have hardness-dependent
equations. As a result, the NPDES Permitting Unit will need site-specific effluent hardness
data and instream hardness data,upstream of the discharge, for each facility monitoring these
metals in order to calculate permit limitations. Effluent hardness and instream hardness
sampling,upstream of the discharge,have been added to the permit at a monitoring frequency
of quarterly [See A. (1.)].
• The Town's allowable discharge concentrations are 0.931 µg/L, 5.786 µg/L, 5.0 µg/L,
and 0.06 µg/L for Cadmium, Lead, Selenium,and Silver,respectively. DWR's laboratory
identifies the target Practical Quantification Limits(PQLs)for Cadmium,Lead, Selenium,
and Silver as 0.5 µg/L,2.0 µg/L, 1.0 µg/L and 1.0 µg/L,respectively. 15A NCAC 2B .0505
D E Q>� North Caropa En Qualit I Resources
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512 North SalislinaburDey Streetrtment 1 of1617 Mali Servicevironmental Centery I Raleigh,Division NorthofWater Carolina 2769
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(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 Town should continue to use sufficiently sensitive test methods for all pollutants,
including when performing Effluent Pollutant Scans.
• Some of the wording has changed in Special Condition A. (2.), Chronic Toxicity Permit
Limit,please review each paragraph carefully.
• Special Condition A. (7.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed(2022,2023,and 2024). In addition, at the end
of the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit
renewals per Federal Regulations [40 CFR 122.21(j)(5)]have been added.
• 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. (8.)].
• 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. The current compliance date, effective January 4, 2021, was extended as a fmal
regulation change published in the November 2,2020 Federal Register. [See A. (8.)]
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
[ See A. (1.)].
• Regulatory citations have been added to the permit.
The NPDES standard conditions(Parts II,III,and IV)that are a part of the permit are not included
in this draft document (cover, map, and Part I). The conditions are the same as in your current
permit except that agency and division names have been updated.The latest version is available at
https://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Johnston 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(919) 707-3613 or by email at [e-mail].
Sincerely,�
�S�C� rt d G Kurtz,
Cassidy Kurtz,Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Page 2 of 3

Ecopy: US EPA Region 4
DWR/Raleigh Regional Office/Water Quality/Scott Vinson
DWR/Operator Certification Program/Maureen Kinney
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Cindy Moore,Zach Thomas
Benson WWTP/Brian Leavitt,ORC
Town of Benson/Tim Robbins,Public Utilities Director
Page 3 of 3

Permit NC0020389
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
DRAFT PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1,other lawful standards and
regulations promulgated and adopted by the North Carolina Water Quality Commission,and the Federal Water
Pollution Control Act,as amended,the
Town of Benson
is hereby authorized to discharge wastewater from a facility located at the
Benson Wastewater Treatment Facility
770 Hannah Creek Road(south of I-95)
Four Oaks
Johnston County
to receivingwaters designated as Hannah Creek in the Neuse River Basin
�
in accordance with the discharge limitations,monitoring requirements,and other conditions set forth in Parts I,II,
III and IV hereof.
This permit shall become effective:Month DD,2020.
This permit and authorization to discharge shall expire at midnight on April 30, 2025.
Signed this day:Month DD,2020.
DRAFT
for S.Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0020389
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 Town of Benson
is hereby authorized to:
1. Continue to operate an existing 1.9 MGD wastewater treatment facility,located at the Benson WWTP off
Hannah Creek Road in Four Oaks in Johnston County,consisting of the following equipment:
• Bar screens
• Grit removal
• Parshall flume with flow measurement
• Influent composite sampler
• Influent screw pumps
• Three extended aeration/oxidation basins/nutrient reduction
• Five secondary clarifiers
• Tertiary filters
• Chlorine contact basin
• Dechlorination
• Post aeration
• Effluent flow measurement
• Effluent composite sampler
• Aerated sludge lagoon
• Two stabilization lagoon(also act as influent flow storage)
• Lagoon effluent return pump station
• Backup generator;and
2. Operate facilities for reuse water up to 0.02672 MGD in accordance with Non-Discharge permit WQ0022501;
and
3. Discharge wastewater from said treatment works at the location specified on the attached map into Hannah
Creek,classified C-NSW waters in the Neuse River Basin.
ii

Permit NC0020389
PART I
A.(1.)EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq.,02B .0500 et seq.]Grade IV Biological Water Pollution Control System
[15A NCAC 08G.0302]
Beginning on the effective date of this permit and lasting until expiration,the Permittee is
authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
EFFLUENT UNITS MONTORING REQUIREIVENTS
PARAMETER CHARACTERISTICS
Pararreter Code Monthly Vlkeldy Daily Measurement Sample Sarrple
Average Average Mardnun Frequency Type Location 2
Rani 50050 1.9 MDI Continuous Recording Influent or
Effluent
Total Monthly Flory(MG)3 82220 Monitor aril Report Monthl Recorded or Effluent
y Calculated
(April 1—October 31)4 3/0 5.0 mg/L 7.5 mg/L Daily Composite Influent&
Effluent
®OD 20°C U3310 10.0 rrg/L 15.0 rrg/L Daily Composite Influent&Effluent
(November 1—March 31)4
Taal Suspended Solids �?0 30.0 mg/L 45.0 rng/L Daily Composite Influent&
(TSS)4 Effluent
Am/ilia(NH3 as N) C 0610 1.0 mg/L 3.0 rrg/L Daily Composite Effluent
(April 1-October 31)
An lithe(NH,as N) 00610 2.0 mg/L 6.0 mg/L Daily Composite Effluent
(November 1-Mardi 31)
PH 00400 Between 6.0 and 9.0 standard units Daily Crab Effluent
Dissolved Oxygen(rrg/L) 00300 Daily Average>_6.0 rr►g/L. Daily Crab Effluent
Fecal Conform 31616 200/100 A. 400/100 mL Daily Gab Effluent
(geometric mean)
'Temperature(°C) C0310 Monitor and Report Dolly Crab Effluent
Conductivity(mohms/cm) Monitor and Report Daily Crab Effluent
Total Residual Clicrine
( )e 50 17 pg/L Duly Crab Effluent
FRC
714V(rrg/L)6 00625 Monitor and Report Waeldy Composite Effluent
NOON+NO2-N(rrg/L)6 00630 Monitor and Report V1kekIY Composite Effluent
Monitor and Report Weekly Composite Effluent
IN Load 2 014600 M an onitor d Report(pounds/month) Monthly Calculated Effluent
QY600 33,070 pounds/year(annual mass loacing) Amu ally Calculated Effluent
Total Phosphorus C0665 2.0 rrg/L(C iarterly Average)6 Vtkeldy Composite Effluent
Total Nickel 9 62.1 pg/L 558.9 pg/L Monthly Composite Effluent
a■u is Toddty 10 TGP38 Monitor and Report Quarterly Composite Effluent
Effluent Pblluta it Scan M01 Monitor and Report See Footnote 11 Effluent
Total Ha of ref[as
00900 Monitor and
Report
Quarterlyto Effluent
cam]( )12 >
Dissolved Oxygen(rrg/L) 00300 Monitor and Report Variable 2 Crab U&D
Fecal Colifemi(geometric
mean) 31616 Monitor
d Report Variable 2 Crab U&D
Temperature(°C) 00010 Monitor and Report Variable 2 Crab U&D
Cont.on next page
Page 1 of 10

Permit NC0020389
EFFLUENT UNITS MONITORING REQURENENTS
PARAMETER CHARACTERISTICS
Pxameter Code Montt* VlkekIy Daily IMeasurerrent Sample Sample
Average Average Madam Frequency Type Location 2
Caxkjdivity(mohms/om) Monitor and Report Variable 2 Grab U&D
Total 17 larch
(nnJ06900 Monitor aid Report Q arteriy Grab U&D
GaCial0 H`)13
Footnotes:
1. Submit discharge monitoring reports electronically using the NC DWR's eDMR application system. See
section A.(8.).
2. U:Upstream at the culvert on NCSR 1158. D:Downstream at NCSR 1227. Stream samples shall be
grab samples collected 3/Week from June to September and 1/Week during the remaining months of the
year As a participant in the Lower Neuse River Basin Association,the instream monitoring requirements
as stated above are waived. Should your membership in the association be terminated,you shall notify
the Division immediately and the instream monitoring requirements specified in your permit shall be
reinstated.
3. Total Nitrogen Load is the mass quantity of Total Nitrogen(TN)discharged in a given period of time and
requires Total Monthly Flow(TMF). See condition A.(3.).Calculation of Total Nitrogen Loads.
4. The monthly average effluent GODS and Total Suspended Residue concentrations shall not exceed 15%
of the respective influent value(85%removal).
5. Total Residual Chlorine compliance is required if chlorine or chlorine derivative is used for disinfection.
' The Division shall consider all effluent TRC values reported below 50 ug/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 ug/1.
6. For a given wastewater sample,Total Nitrogen(TN)=TKN+(NO3-N+NO2-N)where TKN is Total
Kjeldahl Nitrogen,and(NO3-N+NO2-N)is Nitrate and Nitrite Nitrogen.
7. Compliance with this limit shall be determined in accordance with conditions A. (4.)Annual Limits for
Total Nitrogen.and A. (5.)Total Nitrogen Allocations.
8. The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during the calendar quarter(January-March,April-June,July-September,October-December).
9. Monitoring for Nickel shall be conducted in conjunction with the Chronic Toxicity monitoring.
10. Chronic Toxicity(Ceriodaphnia dubia)P/F at 90%:January,April,July,and October[see
condition A. (2.)]. Toxicity monitoring shall coincide with metals monitoring.
11. The permittee shall perform three Effluent Pollutant Scans during the term of this permit[see A.
(7•)]•
12. Effluent Total Hardness sampling shall be performed in conjunction with testing for hardness-
dependent metals(cadmium,copper,lead,nickel,silver,and zinc).
13. 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 pennittee is a member of a
monitoring 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.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 2 of 10

Permit NC0020389
A.(2.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
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 January,April,July,and October.
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 fmal 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:
Attention: 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,ATForms.ATB(ancdenr.gov.
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.
Page 3 of 10

Permit NC0020389
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 OF TOTAL NITROGEN LOADS
[G.S. 143-215.1(b)]
a. The Permittee shall calculate monthly and annual TN Loads as follows:
1.Monthly TN Load(pounds/month)=TN x TMF x 8.34
where: TN = the average Total Nitrogen concentration(mg/L)of the composite samples
collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/month)
8.34 = conversion factor,from(mg/L x MG)to pounds
2.Annual TN Load(pounds/year)=Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results(mg/L and pounds/month)in the appropriate
discharge monitoring report for each month and shall report each year's results(pounds/year)with the
December report for that year.
A.(4.)ANNUAL LIMITS FOR TOTAL NITROGEN
[G.S. 143-215.1(b)]
a. Total Nitrogen(TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin apply on a calendar year basis.
b. For any given calendar year,the Permittee shall be in compliance with the annual TN Load limit in this
Permit if:
(i.) the Permittee's annual TN discharge is less than or equal to its TN Load limit,or
(ii.) the Permittee is a co-permittee member of a compliance association.
c. If the Permittee is not a co-permittee member of a compliance association and the Permittee's cumulative
annual TN discharge exceeds the effective TN Load limit in this permit at any point during the calendar
year,the Permittee is in violation of its TN Load limit,and each day of a continuing violation shall
constitute a separate violation.
d. The TN Load limit in this Permit(if any)may be modified as the result of allowable changes in the
Permittee's TN allocation.
(iii.) Allowable changes include those resulting from purchase of TN allocation from the Wetlands
Restoration Fund;purchase,sale,trade,or lease of allocation between the Permittee and other
dischargers;regionalization;and other transactions approved by the Division.
(iv.) The Permittee may request a modification of the TN Load limit in this Permit to reflect allowable
changes in its TN allocation.Upon receipt of timely and proper application,the Division will modify
the permit as appropriate and in accordance with state and federal program requirements.
(v.) Changes in TN limits become effective on January 1 of the year following permit modification. The
Division must receive application no later than August 31 for changes proposed for the following
calendar year.
(vi.) Application shall be sent to:
NCDWR/NPDES Programs
Attn:Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh,NC 27699-1617
Page 4 of 10

Permit NC0020389
e. If the Permittee is a member and co-permittee of an approved compliance association,its TN discharge
during that year is governed by that association's group NPDES permit and the TN limits therein.
(vii.) 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.
(viii.)Association roster(s)and members'TN allocations will be updated annually and in accordance with
state and federal program requirements.
(ix.) If the Permittee intends to join or leave a compliance association,the Division must be notified of the
proposed action in accordance with the procedures defined in the association's NPDES permit.
(A) Upon receipt of timely and proper notification,the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the year
following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of this Permit
and are not affected by the Permittee's membership in a compliance association.
A.(5.)TOTAL NITROGEN ALLOCATIONS
[15A NCAC 02B.0713]
The following table lists the Total Nitrogen(TN)allocation(s)assigned to,acquired by,or transferred to
the Permittee in accordance with the Neuse River nutrient management rule(T15A NCAC 02B .0713)
and the status of each as of permit issuance.These allocations and credits are not enforceable limits nor
do they supersede any TN limit(s)established elsewhere in this permit or in the NPDES permit of a
compliance association of which the permittee is a Co-permittee Member.
ALLOCATION ALLOCATION AMOUNT 1
TYPE SOURCE DATE Estuary Discharge STATUS
(lb/year) (lb/year)
Base Assigned by Rule 12/7/97; Active
(T15A NCAC 02B .0713) 4/1/03; 16,895 33,790
1/1/2019
Decremental Sale to Central Johnston 4/2/08 360 720 Deducted
County NC0030716
TOTAL 16,535 33,070 Active
Footnote:
1. Transport Factor=50%
Any addition,deletion,or modification of the listed allocation(s)(other than to correct typographical errors)
or any change to Active status of any of the listed allocations shall be considered a major modification of
this permit and shall be subject to the public review process afforded such modifications under state and
federal rules.
A.(6.)LAGOON FREEBOARD HEIGHT REQUIREMENT
[40 CFR 122.41 (e)]
A minimum of 2 feet of freeboard height must be maintained in the lagoons(currently used for
equalization/sludge holding). A staff gauge must be placed in each lagoon and the height recorded daily.
Page 5 of 10

Permit NC0020389
A.(7.)EFFLUENT POLLUTANT SCAN(Municipal POTWs)
[G.S. 143-215.1(b)]
a. 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:2022,2023,and 2024. 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. Samples should be
collected with one quarterly toxicity test each year,and must 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 CO100
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 l,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 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-nitrophcnol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile organic 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 Acenaphthcnc 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylenc 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-tnchlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
1. Reporting. Test results shall be reported electronically using the Division's eDMR system
or on DWR Form DMR-PPA-1(or on a form approved by the Director)by December 31st of
each designated sampling year.
2. 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 utilizing the DWR Form submit to the
following address:
Page 6 of 10

Permit NC0020389
NC DEQ/DWR/NPDES 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
b. Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four(4)toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application,or four tests performed at least annually in the
four and one half year period prior to the application. These tests shall be performed for acute or chronic
toxicity,whichever is specified in this permit. The multiple species toxicity test results shall be filed with
the Aquatic Toxicology Branch at 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,ATForms.ATB(aincdenr.gov.
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data)of EPA Municipal Application Form 2A,when submitting the permit renewal
application to the NPDES Permitting Unit.
A.(8.)ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and program reports.
The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B.(11.) Signatory Requirements
• Section D.(2.) Reporting
• Section D.(6.) Records Retention
• Section E.(5.) Monitoring Reports
1. Reporting Requirements[Supersedes Section D.(2.)and Section E.(5.) (a)t
The Pennittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR)internet application.
Monitoring results obtained during the previous month(s)shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and
submit DMRs electronically using the internet. Until such time that the state's eDMR application is
compliant with EPA's Cross-Media Electronic Reporting Regulation(CROMERR),Permittees will be
required to submit all discharge monitoring data to the state electronically using eDMR and will be required
to complete the eDMR submission by printing,signing,and submitting one signed original and a copy of the
computer printed eDMR to the following address:
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Permit NC0020389
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
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 mailing address above. See"How to Request
a Waiver from Electronic Reporting"section below.
Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility,on the last day of the month following the
commencement of discharge.
Starting on December 21,2020,the Permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act(CWA)Section 316(b)Annual Reports.
NPDES Electronic Reporting Rule—Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025.The current compliance date,effective January 4,2021,was extended as a final regulation change
published in the November 2,2020 Federal Register.
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.
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Permit NC0020389
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. Sinnatory 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 cert0,, 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 offines and imprisonment for knowing violations."
5. Records Retention[Supplements Section D.(6.)l
The Permittee shall retain records of all Discharge Monitoring Reports,including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time[40 CFR 122.41].
Page 9 of 10

Permit NC0020389
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Page 10 of 10