NC0020389_Draft Permit_20210126

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
January 26, 2021
Mr. Frederick D. Nelson, Town Manager
Town of Benson
303 E. Church Street
Benson, North Carolina 27504
Subject:
Dear Mr. Nelson:
Draft NPDES Permit Renewal
Permit NCO020389
Benson WWTP
Johnston 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.
The following changes were made to the draft permit sent to you on November 10, 2020:
• A notation was made concerning the Electronic Reporting Rule — Phase 2 Extension.
extended the Phase 2 deadline from December 21, 2020, to December 21, 2025, effective
January 4, 2021. The current compliance date has been extended to reflect this change [See
A. (8.)].
• Based on NPDES guidance regarding the reduction of monitoring frequencies in NPDES
permits for exceptionally performing facilities, monitoring requirements for BOD5
(winter), NIls-N (winter), Total Suspended Solids and Fecal Coliform have been reduced
to twice per week [See A.(1)].
This draft permit maintains the following significant changes identified in the letter sent on
November 10, 2020:
• 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
North Carolina Department of Environmental Quality I Division of Water Resources
_ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

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
(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 122.210)(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 final
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.
Page 2 of 3

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].
Sincerely,
Cassidy Kurtz, Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
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 NCO020389
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 receiving waters 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, 2021.
This permit and authorization to discharge shall expire at midnight on April 30, 2025.
Signed this day: Month DD, 2021.
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 W WTP 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/nutriseduction
• 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.
11

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 LIMITS
MONITORING REQUIREMENTS
PARAMETER CHARACTERISTICS
Parameter Code
Monthly
Weekly
Daily
Measurement
Sample
Sample
Average
Average
Maximum
Frequency
Type
Location
Flow 50050
1.9 MGD
Continuous
RecordingInfluent
or
Effluent
Total Monthly Flow (MG) 3 82220
Monitor and Report
Monthly
Recorded d
Calculated
Effluent
BOD,5-day, 20°C 4 C0310
(April 1 —October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent &
Effluent
BOD 5-day, 4 C0310
(Nov — M
November 1 —March 31
10.0 mg/L
15.0 mg/L
2/week 14
Composite
Influent & Effluent
Total Suspended Solids C0530
30.0 mg/L
45.0 mg/L
2/week 14
Composite
Influent &
TSS
Effluent
Ammonia (NH, as N) C0610
(April 1 - October 31
1.0 mg/L
3.0 mg/L
Daily
Composite
Effluent
Ammonia (NH3 as N) C0610
November 1 - March 31
2.0 mg/L
6.0 mg/L
2/week 14
Composite
Effluent
pH 00400
Between 6.0 and 9.0 standard units
Daily
Grab
Effluent
Dissolved Oxygen (mg/L) 00300
Daily Average >— 6.0 mg/L
Daily
Grab
Effluent
Fecal Coliform 31616
(geometric mean
200/100 mL
400/100 mL
2/week 14
Grab
Effluent
Temperature (°C) 00010
Monitor and Report
Daily
Grab
Effluent
Conductivity (mohms/cm)
Monitor and Report
Daily
Grab
Effluent
Total
TRCResidual Chlorine 50060
17 Ng/L
Daily
Grab
Effluent
KN (mg/L) 6 00625
Monitor and Report
Weekly
Composite
Effluent
NO3-N + NO2-N (mg/L) 6 00630
Monitor and Report
Weekly
Composite
Effluent
N (mg/L) 3.6 C0600
Monitor and Report
Weekly
Composite
Effluent
QM600
Monitor and Report (pounds/month)
Monthly
Calculated
Effluent
TN Load 3
33,070 pounds/year (annual mass loading)?
Annually
Calculated
Effluent
QY600
Total Phosphorus C0665
2.0 mg/L (Quarterly Average)a
Weekly
Composite
Effluent
Total Nickel 9
62.1 Ng/L
1
558.9 Ng/L
Monthly
Composite
Effluent
Chronic Toxicity t0 TGP3B
Monitor and Report
Quarterly
Composite
Effluent
Effluent Pollutant Scan NC01
Monitor and Report
See Footnote 11
Effluent
Total Hardness[as 00900
aCO, m /L 1
Monitor and Report
Quarterly
Composite
Effluent
Dissolved Oxygen (mg/L) 00300
Monitor and Report
Variable 2
Grab
U & D
Fecal Coliform (geometric 31616
Monitor and Report
Variable 2
Grab
U & D
mean
emperature (°C) 00010
Monitor and Report
Variable z
Grab
U & D
Cont. on next page
Page 1 of 10

Permit NC0020389
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PARAMETER CHARACTERISTICS
Parameter Code Monthly Weekly Daily
Measurement
Sample
Sample
Average Average Maximum
Frequency
Type
Location 1
onductivity (mohms/cm)
Monitor and Report
Variable 2
Grab
U & D
otal Hardness [as 00900
aCO3 m /L 13
Monitor and Report
p
Quarterly
y
Grab
U & D
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 BODS 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/l.
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 permittee 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.
14. 2/week sampling must occur on any two non-consecutive days during the calendar week.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 2 of 10

Permit NCO020389
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 I1 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 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 THP3113 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, [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.
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 NCO020389
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 LEMTS 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 NCO020389
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.
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 AMOUNT 1
ALLOCATION
SOURCE
DATE
STATUS
Estuary
Discharge
TYPE
(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 NCO030716
TOTAL
16,535
133,070
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)
CO610
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
CO541
Bis (2-ethylhexyl) phthalate
CO100
Nitrate /Nitrite
00630
1,3-dichloropropylene
77163
4-bromophenyl phenyl ether
34636
Kjeldahl nitrogen
00625
Ethylbenzene
34371
Butyl benzylphthalate
34292
Oil and grease
00556
Methyl bromide
34413
2-chloronaphthalene
34581
Phosphorus
CO665
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-trichloroehane
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
CO626
Silver
01077
2,4-dimethylphenol
34606
1,2-diphenylhydrazine
34346
Thallium
01059
4,6-dinitro-o-cresol
34657
Fluoranthene
CO376
Zinc
01092
2,4-dinitrophenol
34616
Fluorene
34381
Cyanide
00720
2-nitrophenol
34591
Hexachlorobenzene
CO700
Total phenolic compounds
32730
4-nitrophenol
34646
Hexachlorobutadiene
CO702
Volatile oreanic 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
CO526
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
CO551
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 Divisions 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 NCO - Annual Pollutant Scan. If utilizing the DWR Form submit to the
following address:
Page 6 of 10

Permit NCO020389
NC DEQ / DWR / NPDES Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Or the form may be uploaded at: hgps:Hedocs.deg.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 122.210)(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(aa)ncdenr.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 - 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.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (all
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. The eDMR system may be accessed at:
h!Ws://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:
Page 7 of 10

Permit NC0020389
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.
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;
• 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.federalrep-ister.gov/documents/2015/ 10/22/2015-24954/national-pollutant-discharge-elimination-
system-npdes-electronic-reportine-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reportin¢
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:
Page 8 of 10

Permit NC0020389
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Sienatory 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. (I 1.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I 1.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
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:
httD://deu.nc.eov/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:
V 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.)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 NCO020389
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Page 10 of 10