NC0020648_Draft Permit_20210223

',,i)
ROY COOPER i 4.I
Governor 't\NACI
MICHAEL S.REGAN
Secretary •� '��
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
February 23,2021
Ms.Hope Woolard
Water Resources Superintendent
City of Washington
PO Box 1988
Washington,North Carolina 27889
Subject: Draft NPDES Permit Renewal
Permit NC0020648
Washington WWTP
Beaufort County
Grade IV Biological WPCS
SIC Code 4952
Dear Ms. Woolard:
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:
• Per the results of instream waste concentration(IWC)-based calculations for ammonia-
nitrogen,ammonia nitrogen limits have been revised[See A.(1.)].
• 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)].
• The Division is implementing dissolved metals standards in all permits,per the 2016
revisions to State water quality standards. As such,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.)].
• As instream sampling requirements have been moved to Section A.(1.), Special
Condition A.(2.)Instream Monitoring Requirements has been removed from the permit.
• Some of the wording has changed in Special Condition A. (5.), Acute Toxicity Permit
Limit,please review each paragraph carefully.
• Special Condition A. (6.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed(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.
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
11 Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025.
D_E -4 North De Enom Q I W Re
512 NorthCarolina Salisburypartment Street 1 of1617 Mail n Serviceental Center
I Raleigh.Division Northofater Carolinasources 27699 1617
o.w.u...1 w a.«a...w aw�y� /"' 919.707.9000

• 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. (7.)].
• 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 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(919)707-3609 or by email at [e-mail].
Sincerely,
Nick Coco,Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
DWR/Washington Regional Office/Water Quality/Robert Tankard
DWR/Operator Certification Program/Maureen Kinney
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Zach Thomas and Cindy Moore
DWR/Municipal Permitting Unit/Kristin Litzenberger
Page 2 of 2

Permit NC0020648
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
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 Environmental Management
Commission,and the Federal Water Pollution Control Act,as amended,the
City of Washington
is hereby authorized to discharge wastewater from a facility located at the
Washington Wastewater Treatment Plant
1399 2nd Street,Washington
Beaufort County
to receiving waters designated as the Tar River in the Tar-Pamlico River Basin
in accordance with effluent limitations,monitoring requirements,and other conditions set forth in
Parts I, II,III,and IV hereof.
The permit shall become effective- Month xx,2021.
This permit and the authorization to discharge shall expire at midnight on: November 30,2025.
Signed this day- Month xx,2021.
DRAFT
for S.Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0020648
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility,whether for operation or discharge are hereby revoked.As of this
permit issuance,any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions,requirements, terms,and
provisions included herein.
The City of Washington
is hereby authorized to:
1. Continue operation of an existing 3.65 MGD wastewater treatment facility that includes the
following components:
• Influent metering vault
• Mechanical bar screen
• Automatic aerated grit chamber
• Splitter box
• Aeration basin
• Activated sludge oxidation ditch
• Four secondary clarifiers with scum removal and pumped sludge return
• Five cell deep-bed denitrification sand filters with a methanol storage/feed system
• Dual chlorine contact chambers with flow paced sodium hypochlorite feed
• Sodium bisulfite dechlorination
• Reaeration Basin
• Lime storage tower
• Caustic soda and polymer feed system
• Sludge mixing tank with lime addition
• Four sludge thickening lagoons
• Recirculation pump and decant draw-off
• 60,000 gallon mud well
• Sludge recirculation pump station
• Effluent pump station
• Effluent diffuser
This facility is located at the Washington Wastewater Treatment Plant at 1399 2nd Street,Washington in
Beaufort County.
2. Discharge treated wastewater from said treatment works at the location specified on the attached
map through outfall 001 into the Tar River,a class C-NSW water in the Tar-Pamlico River Basin.
Page 2 of 13

Permit NC0020648
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 .03021
(a.) Beginning on the effective date of this permit and lasting until permit 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:
IPARAMETER EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location2
Flow 50050 3.65 MGD Continuous Recording I or E
Total Monthly Flow 82220 Monitor and Report Monthly Recorded or I or E
Calculated
BOD5(20°C)3 80082 13.1 mg/L 19.6 mg/L 2/Week4 Composite I and E
Total Suspended Solids' C0530 30.0 mg/L 45.0 mg/L 2/Week4 Composite I and E
Ammonia(NH3 as N) C0610 1.0 mg/L 3.0 mg/L 2/Week4 Composite E
Fecal Coliform 31616 200/100 mL 400/100 mL 2/Week4 Grab E
(geometric mean) 1
Total Residual Chlorines 50060 17.0 pg/L Daily Grab E
Dissolved Oxygen 00300 Daily Average>_ 5.0 mg/L Daily Grab E
Temperature,°C 00010 Monitor and Report Daily Grab E
1 pH 00400 Between 6.0 and 9.0 standard units Daily Grab E
Conductivity 00094 Monitor and Report Daily Grab E
Total Nitrogen 00625 Monitor and Report Weekly Composite E
(NO2+NO3+TKN),mg/L
Total Kjeldahl Nitrogen 00630 Monitor and Report Weekly Composite E
(TKN),mg/L
Nitrite/Nitrate Nitrogen C0600 Monitor and Report Weekly Composite E
(NO2-N+NO3-N), mg/L
TN Load6 QM600 Monitor and Report(Ib/mo) Monthly Calculated E
QY600 52,054 lb/yr7 Annually Calculated E
Total Phosphorus,mg/L C0665 Monitor and Report Weekly Composite E
TP Loads QM665 Monitor and Report(lb/mo) Monthly Calculated E
QY665 9,407 lb/yr7 Annually Calculated E
Total Hardness[as 00900 Monitor and Report QuarterlyComposite E
CaC043,mg/L Po p
Acute Toxicity9 TGE6C See Note 9 Quarterly Composite E
Effluent Pollutant Scan NC01 Monitor and Report Footnote 10 E
Dissolved Oxygen, mg/L 00300 Monitor and Report Variable2 Grab U, D
Temperature,°C 00010 Monitor and Report Variable2 Grab U, D
Fecal Coliform 31616 Monitor and Report Variable2 Grab U, D
(geometric mean)
Conductivity,pmhos/cm 00094 Monitor and Report Variable2 Grab U, D
Total Hardness[as 00900 Monitor and Report(mg/L) Quarterly Composite U
CaCO3]11,mg/L
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application system.
See Special Condition A.(7.).
(Footnotes continued on next page.)
Page 3 of 13

Permit NC0020648
Footnotes(continued):
2. Sample Location:E-Effluent,I-Influent,U-Upstream at Grimesland Bridge,D-Downstream at NC Highway
17.Stream samples shall be collected three times per week during the months of June,July,August,and September
and weekly during the remainder of the year.Instream monitoring requirements are waived as long as the
Permittee maintains membership in the Tar-Pamlico Basin Association.If the Permittee ceases membership,then all
instream monitoring requirements specified in this permit are immediately reinstated.
3. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15%of the respective influent value
(85%removal).
4. 2/Week sampling must occur on any two non-consecutive days during the calendar week.
5. Total residual chlorine shall be monitored only if chlorine is added to the treatment process.The Division shall
consider all effluent TRC values reported below 50 pg/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.
6. TN or TP Load is the mass quantity of Total Nitrogen or Total Phosphorus discharged in a given period of time.See
Special Condition A.(2.)Calculation of Total Nitrogen and Total Phosphorous Loads.
7. Compliance with mass limits shall be determined in accordance with Special Condition A.(3.)Annual Limits for
Total Nitrogen or Total Phosphorus.
8. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(cadmium,copper,lead,nickel,silver,and zinc).
9. Acute Toxicity(Pimephales promelas)P/F @ 90%,February,May,August,November;See Special Condition A.(5.).
10. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit[see A.(6.)].
11. 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
li . nsa
mpling Coalition terminates instream hardness sa plmg at the approved station,the Permittee will immediately notify the
Division and resume sampling for instream hardness upstream of its discharge.
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2.) CALCULATION OF TOTAL NITROGEN AND TOTAL PHOSPHORUS LOADS
[G.S. 143-215.1(b)]
(a.)The Permittee shall calculate monthly and annual TN Loads as follows:
(i.) Monthly TN(or TP)Load (lb/mo) =TN(or TP) x TMF x 8.34
where:
TN or TP = the average Total Nitrogen or Total Phosphorus concentration
(mg/L)of the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month(MG/mo)
8.34 = conversion factor,from(mg/L x MG)to pounds
(ii.) Annual TN(or TP)Load(lb/yr)=Sum of the 12 Monthly TN(or TP)Loads for the
calendar year
(b.)The Permittee shall report monthly Total Nitrogen and Total Phosphorus results(mg/L and lb/mo)
in the appropriate discharge monitoring report for each month and shall report each calendar year's
results(Ib/yr)with the December report for that year.
Page 4 of 13

Permit NC0020648
A.(3.) ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS
[G.S.143-215.1(b)]
(a.) Total Nitrogen(TN)and Total Phosphorus (TP)allocations and load limits for NPDES
g P
dischargers in the Tar-Pamlico River basin are annual limits and apply on a calendar year basis.
(b.) For any given calendar year,the Permittee shall be in compliance with the annual TN(or TP)
Load limit in this Permit if:
i. the Permittee's annual TN(or TP)Load is less than or equal to the effective limit,or
ii. the Permittee is a Co-Permittee Member of a compliance association.
(c.) If the Permittee is not a co-permittee member of a compliance association and the Permittee's
cumulative annual TN(or TP)discharge exceeds the effective TN(or TP)Load limit in this permit
at any point during the calendar year,the Permittee is in violation of its TN(or TP)Load limit for
the remainder of the calendar year,and each day of continuing violation shall constitute a
separate violation.Compliance with annual limits shall be determined separately for each
calendar year,and an exceedance in one year does not carry forward to subsequent years.
(d.) The TN(or TP)Load limit in this Permit(if any)may be modified as the result of allowable
changes in the Permittee's allocations.
i. Allowable changes include those resulting from purchase of TN(or TP)allocation from an
authorized mitigation banker,the Ecosystem Enhancement Program,or other source
allowed under applicable regulations;purchase,sale,trade,or lease of allocation between
the Permittee and other dischargers;and other transactions approved by the Division and
consistent with the Tar-Pamlico River Basin Association Agreement,as revised.
ii. The Permittee may request a modification of the TN(or TP)Load limit in this Permit to
reflect allowable changes in its allocation(s).Upon receipt of timely and proper
application,the Division will modify the permit as appropriate and in accordance with
state and federal program requirements.
W. Changes in TN (or TP) limits become effective on January 1 of the year following permit
modification.The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
iv. Application shall be sent to:
NCDWR/ Wastewater Permits Branch
Attn:Tar-Pamlico River Basin Coordinator
1617 Mail Service Center
Raleigh,NC 27699-1617
(e.) If the Permittee is a member and co-permittee of an approved compliance association on January
1 of a given year,its TN and TP discharges during that year are governed by that association's
group NPDES permit and the limits therein.
i. The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
ii. Association roster(s)and members'TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association,the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification,the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
Page5of13

Permit NC0020648
(f.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout
the term of the Permit and are not affected by the Permittee's membership in a compliance
association.
A.(4.) NUTRIENT ALLOCATIONS
[G.S.143-215.1(b)]
(a.) Total Nitrogen(TN)and Total Phosphorus (TP) allocations represent the maximum TN and TP
loads that a discharger or group of dischargers is potentially allowed under the Tar-Pamlico
nutrient management strategy.Allocations are not enforceable limits but are the basis for TN and
TP limits established in individual or group NPDES permits.
(b.) The allocations originally assigned to the Tar-Pamlico Basin Association members total 889,274
lb/yr(404,274 kg/yr)TN and 160,372 lb/yr(73,060 kg/yr)TP.These group allocations have been
divided among the members in proportion to the maximum permitted flow in each member's
permit;that is,
Individual Permitted Flow
Individual Allocation(TP or (MGD) x Group Allocation,TPBA (TN
TN)= Total Permitted Flow,TPBA or TP)
(MGD)
For the purposes of this distribution,individual permitted flows for the Association members are those
in effect as of July 2014 and result in a Total Permitted Flow of 62.495 MGD.
(c.) The following table lists,for information purposes only,the TN and TP allocations assigned to,
acquired by,or transferred to the Permittee in accordance with the Tar-Pamlico River Basin Phase
IV Agreement.Applicable TN or TP limits are established in the Effluent Limitations conditions
of this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-
Permittee Member.
allocation Type Source Date allocation amount (1) Status
(lb/yr) (kg/yr)
Tar-Pamlico River
Total Nitrogen Basin Phase IV 7/9/2015 52,054 23,611 Active
Agreement
Total Tar-Pamlico River
Phosphorus Basin Phase IV 7/9/2015 9,407 4,267 Active
Agreement
1. Any addition,deletion,or modification of the listed allocation(s) (other than to correct
typographical errors)or any change from Reserve to Active status of any of the listed
allocations shall be considered a major modification of this permit and shall be subject to the
public review process afforded such modifications under state and federal rules.
Page 6 of 13

Permit NC0020648
A.(5.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B.0200 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
discharge below 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 months specified above.
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,using the parameter code
TGE6C.Additionally,DWR Form AT-2(original) is to be sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Or,results can be sent to the email, [e-mail].
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete,accurate,include all supporting chemical/physical measurements and all
concentration/response data,and be certified by laboratory supervisor and ORC or approved
designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is
employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required,the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number,pipe number,county,and the month/year of the
report with the notation of"No Flow"in the comment area of the form.The report shall be submitted
to the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,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.
Page 7 of 13

Permit NC0 2 64a
Should any test da ta from either these monitoring requiremen ts or tests performed by the North
Carolina Division of Water Resources indicate potential impacts to the receiving stream,this permit
may be re-opene d and modified to include alernatemonitoring requirements o limits.
NOTE: Failure to achieve test conditions as specified in the cited document,such as minimum control
organism survival and appropriate environmental controls,shallconstitute an invalid te st and will
require immed iate follw-p testing to be co mpleted no later than the last da y of the month follo wing
the month of the initial monitoring.
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Page 8 of 13

Permit NC0020648
A. (6.) EFFLUENT POLLUTANT SCAN
[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 chlorid 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachlorcee 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrach1oroetl ene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6dinitrotoluene 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-nitrophenol 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 343%
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compowids: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 346%
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 344% Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
(b.) 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.
(c.) 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 9 of 13

Permit NC0020648
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
(d.) 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,[e-mail].
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.(7.) 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.) (all
The permittee 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
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Permit NC0020648
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the
facility being physically located in an area where less than 10 percent of the households have
broadband access,then a temporary waiver from the NPDES electronic reporting requirements
may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1,
2,3)or alternative forms approved by the Director. Duplicate signed copies shall be submitted to
the following address:
NC DEQ/ Division of Water Resources/ Water Quality Permitting Section
A ITENTION: 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.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant-
d ischarge-elim in ation-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements" section
above.
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Permit NC0020648
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver,a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers must be submitted in writing to
the Division for written approval at least sixty (60)days prior to the date the facility would be
required under this permit to begin submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time,monitoring
data and reports shall be submitted electronically to the Division unless the permittee re-applies for
and is granted a new temporary electronic reporting waiver by the Division. Approved electronic
reporting waivers are not transferrable. Only permittees with an approved reporting waiver
request may submit monitoring data and reports on paper to the Division for the period that the
approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements[Supplements Section B.(11.1 (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
II,Section B. (11.)(a)or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person,and not a position,must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system,registering for eDMR and obtaining an eDMR user account,please visit
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification[40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"I certify,under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,or
those persons directly responsible for gathering the information, the information submitted is, to the best of
my knowledge and belief true,accurate,and complete.I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
5. Records Retention[Supplements Section D. (6.11
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].
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Permit NC0020648
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