NC0081621_Technical Correction_20240613

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
o.173
ROY COOPER -
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Governor
ELIZABETH S.BISER
Secretary gtm-4
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
June 13,2024
Mr.T.Mark Fowler,Facilities Director
Water&Sewer Authority of Cabarrus County(WSACC)
6400 Breezy Lane
Concord,North Carolina 28025
Subject: Technical Correction NPDES Permit
Permit NCO081621
Muddy Creek WWTP
Cabarrus County
Grade II/III Biological WPCS
SIC Code 4952
Dear Mr. Fowler:
Division personnel have reviewed your permit and have acknowledged that the footnotes were
incorrect. Mercury Minimization Plan(MMP)was mistakenly added to the permit, and the required years
for Effluent Pollutant Scan have been updated.The appropriate sheets have been corrected and enclosed.
This technical correction does not affect any other terms,conditions,or compliance actions covered
by the permit.
If you have any questions concerning this permit, please contact Saad Masood at [phone] or via
email at [e-mail].
Sincerely,
E
�DocuSigned byy:q .''A1,I AUKf tb l.W
C464531431644FE-
Michael J. Montebello
NPDES Permitting Branch Chief
Division of Water Resources,NCDEQ
Hardcopy: NPDES Files
Central Files
Ecopy: US EPA Region 4
DWR/Mooresville Regional Office/Water Quality/Andrew Pitner&Roberto Scheller
D E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh,North Carolina 27699-1611
NORTH CAROLINA
oePenmem m��.onme���a�ei� /� 919.707.9000

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
• A special condition to monitor effluent PFAS chemicals quarterly has been added to the permit,to be
effective six(6)months after EPA has a final wastewater method in 40 CFR136 published in the
Federal Register[See Special Condition A.(6.)PFAS Monitoring Requirements].
• Some of the wording has changed in Special Condition A.(3.),Chronic Toxicity Permit Limit,please
review each paragraph carefully.
• Special Condition A.(4.)has been modified to include the specific three years in which the Effluent
Pollutant Scan shall be performed(2026,2027,and 2028).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.
• 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.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you,you have the right to an adjudicatory hearing upon written request within thirty(30)days following receipt
of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center,
Raleigh,North Carolina 27699-6714). Unless such demand is made,this decision shall be final and binding.
Pretreatment updates in response to NPDES permit renewal:
• On December 30,2024, 180 days after the effective date of this NPDES permit renewal,the Permittee
is required to submit to the Division a written technical evaluation of the need to revise local limits(i.e.,
an updated IWS/HWA-AT/L-STMP,or documentation of why is not needed).This action may include
revising,updating,or adding to the list of SIUs regardless of timeframe.
o Submit the updated Long-Term Monitoring Plan(LTMP)
■ If there are new industries within the service area,submit an updated Industrial Waste
Survey(IWS)
■ Review pollutants of concern(POCs) and update the LTMP to reflect pollutants in
industrial user permits(IUPs)and sludge management permit.
o As part of the local limits assessment,please submit the updated Headworks Analysis(HWA).
The NPDES standard conditions(Parts I1,111,and IV)are the same as in your current permit except that agency
and division names have been updated. The latest version is available at https://bit.ly/3k5NFaL and can be
viewed online or downloaded as a PDF file.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to
obtain other permits which may be required by the Division of Water Resources or any other Federal,State,or
Local governmental regulations.
If you have any questions concerning this permit,please contact Saad Masood at(919)707-3604 or via email at
[e-mail].
Sincerely,
Do//c''u,,Signe''d byy:qq � AA
�"W�dth
C464531431644FE...
Michael J. Montebello
NPDES Permitting Branch Chief
Division of Water Resources,NCDEQ
D E Q J/ North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh,North Carolina 27699-1611
NORTRCof Env1A 919.707.9000
�epahme�rt of Environmental Uuali�

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NCO081621
PART
A.(L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.3 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade II
Biological Water Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning on the effective date of the permit and lasting until expansion above
0.3 MGD(and receipt of the Engineer's Certification of completion)or permit expiration,
whichever is sooner,the permittee is authorized to discharge treated municipal and industrial
wastewater from Outfall 001. Such discharges shall be limited and monitored' by the permittee as
specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER
Monthly Weekly Daily Measurement Sample Sample
Parameter Code Average Average Maximum Frequency Type Location'
Flow 50050 0.3 MGD Continuous Recording I or E
BOD,5 day,20°C 3
(Apr 1 -Oct 31) C0310 10.0 mg/L 15.0 mg/L Weekly Composite I and E
BOD,5 day,20°C 3
(Nov 1 -Mar 31) C0310 20.0 mg/L 30.0 mg/L Weekly Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 1 45.0 mg/L Weekly Composite I and E
NH3 as N(Apr 1 -Oct 31) C0610 4.0 mg/L 12.0 mg/L Weekly Composite E
NH3 as N(Nov 1 -Mar 31) C0610 8.0 mg/L 24.0 mg/L Weekly Composite E
Fecal Coliform 31616 200/100 mL 400/100 mL Weekly Grab E
(geometric mean)
Dissolved Oxygen 00300 Daily Average>5.0 mg/L Weekly Grab E
pH 00400 Between 6.0 and 9.0 Standard Units Weekly Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
Total Residual Chlorine' 50060 1 28 µg/L 2/Week Grab E
Conductivity(µmhos/cm) 00094 Monitor and Report 3/Week Grab E
Total Phosphorus(mg/L) C0665 Monitor and Report Quarterly Composite E
TKN(mg/L) 00625 Monitor and Report Quarterly Composite E
NO3-N+NO2-N (mg/L) 00630 Monitor and Report Quarterly Composite E
Total Nitrogen' (mg/L) C0600 Monitor and Report Quarterly Calculated E
Total Copper(µg/L) 01042 Monitor and Report Quarterly Composite E
Total Zinc(µg/L) 01092 Monitor and Report Quarterly Composite E
PFAS6 variable See Footnote 6 Footnote 6 Grab E
Chronic Toxicity 7 TGP3B Monitor and Report Quarterly Composite E
Effluent Pollutant Scan 8 NCO] Monitor and Report Footnote 8 Footnote 8 E
Hardness'-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Hardness'-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature°C 00010 Monitor and Report Variable' Grab U and D
Conductivity(µmhos/cm) 00094 Monitor and Report Variable' Grab U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A.(7.).
Footnotes continue on the next page.
Page 3 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NC0081621
Footnotes continued from A.(1.)Effluent Limitations and Monitoring Requirements:
2. Sample locations I-Influent,E-Effluent,U-Upstream=upstream at least 200 feet above the outfall,D-
Downstream=NCSR 1140.Upstream and downstream samples shall be grab samples collected 3/week during
June,July,August,and September and 1/week during the remainder of the year.Instream sampling
requirements are provisionally waived in light of the permittee's participation in the Yadkin-Pee Dee River
Basin Association. Should participation in the association cease,all instream sampling requirements are
immediately reinstated.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(85%removal).
4. The facility shall monitor TRC when using chlorination for disinfection.The Division shall consider all effluent
total residual chlorine values reported below 50 µg/l to be in compliance with the permit. However,the
permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified),even if these values fall below 50 µg/l.
5. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
6. See Special Condition A.(6.).
7. Chronic Toxicity(Ceriodaphnia dubia)P/F at 1.2%with testing in January,April,July and October. See
Special Condition A.(3.).
8. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(4.).
9. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NCO081621
A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [1.0 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.] Grade III
Biological Water Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning upon receipt of the Engineer's Certification for completion of the 1.0
MGD expansion and lasting until permit expiration,the permittee is authorized to discharge treated
municipal and industrial wastewater from Outfall 002. Such discharges shall be limited and
monitored'by the permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER
Monthly Weekly Daily Measurement Sample Sample
Parameter Code Average Average Maximum Frequency Type Location2
Flow 50050 1.0 MGD Continuous Recording I or E
BOD,5 day,20'C 3
(Apr 1 -Oct 31) C0310 5.0 mg/L 7.5 mg/L 3/Week Composite I and E
BOD,5 day,20°C 3
(Nov 1 -Mar 31) C0310 10.0 mg/L 15.0 mg/L 3/Week Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 3/Week Composite I and E
NH3 as N(Apr 1 -Oct 31) C0610 1.0 mg/L 3.0 mg/L 3/Week Composite E
NH3 as N(Nov 1 -Mar 31) C0610 2.0 mg/L 6.0 mg/L I 3/Week Composite E
Fecal Coliform 31616 200/100 mL 400/100 ml, 3/Week Grab E
(geometric mean)
Dissolved Oxygen 00300 Daily Average>5.0 mg/L 3/Week Grab E
pH 00400 Between 6.0 and 9.0 Standard Units 3/Week Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
Total Residual Chlorine 4 50060 28 µg/L 3/Week Grab E
Conductivity(µmhos/cm) 00094 Monitor and Report 3/Week Grab E
Total Phosphorus(mg/L) C0665 Monitor and Report Monthly Composite E
TKN(mg/L) 00625 Monitor and Report Monthly Composite E
NO3-N+NO2-N (mg/L) 00630 Monitor and Report Monthly Composite E
Total Nitrogen' (mg/L) C0600 Monitor and Report Monthly Calculated E
Total Copper(µg/L) 01042 Monitor and Report Quarterly Composite E
Total Zinc(µg/L) 01092 Monitor and Report Quarterly Composite E
PFAS6 variable See Footnote 6 Footnote 6 Grab E
Chronic Toxicity 7 TGP3B Monitor and Report Quarterly Composite E
Effluent Pollutant Scans NCO] Monitor and Report Footnote 8 Footnote 8 E
Hardness'-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Hardness'-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature'C 00010 Monitor and Report Variable2 Grab U and D
Conductivity(µmhos/cm) 00094 Monitor and Report Variable2 Grab U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's cDMR application
system. See Special Condition A.(7.).
Footnotes continue on the next page.
Page 5 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NC0081621
Footnotes continued from A.(2.)Effluent Limitations and Monitoring Requirements:
2. Sample locations I-Influent,E-Effluent,U-Upstream=upstream at least 200 feet above the outfall,D-
Downstream=NCSR 1140.Upstream and downstream samples shall be grab samples collected 3/week during
June,July,August,and September and 1/week during the remainder of the year.Instream sampling
requirements are provisionally waived in light of the permittee's participation in the Yadkin-Pee Dee River
Basin Association. Should participation in the association cease,all instream sampling requirements are
immediately reinstated.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(85%removal).
4. The facility shall monitor TRC when using chlorination for disinfection.The Division shall consider all effluent
total residual chlorine values reported below 50 µg/l to be in compliance with the permit. However,the
permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified),even if these values fall below 50 µg/l.
5. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
6. See Special Condition A.(6.).
7. Chronic Toxicity(Ceriodaphnia dubia)P/F at 3.9%with testing in January,April,July and October. See
Special Condition A.(3.).
8. The permittee shall perform three effluent pollutant scans during the term of this permit. See Special Condition
A.(4.).
9. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 6 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NCO081621
A.(3.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B .0200] [15A NCAC 02B .0500 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 1.2% @ 0.3 MGD and 3.9% @ 1.0
MGD.
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 Il 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
TGP311 for the pass/fail results and THP3B for the Chronic Value. Additionally,DWR Form AT-3
(original) is to be sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Or,results can be sent to the email,[e-mail].
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required,the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number,pipe number, county, and the month/year of the report
with the notation of"No Flow"in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month. Assessment of toxicity compliance is based on the toxicity
testing quarter,which is the three-month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream,this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival,minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later than
the last day of the month following the month of the initial monitoring.
Page 7 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NCO081621
A.(4.) ADDITIONAL MONITORING REQUIREMENTS FOR PERMIT RENEWAL
[G.S. 143-215.1(b)]
(a.) Effluent Pollutant Scans. The permittee shall perform a total of three (3)Effluent Pollutant Scans
for all parameters listed below. One scan must be performed in each of the following years: 2026,
2027, and 2028. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be
sufficiently sensitive to determine whether parameters are present in concentrations greater than
applicable standards and criteria. Each annual sample shall coincide with one quarterly toxicity test
each year(see Condition A.(3.)(CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY))),and
each must be collected in a different calendar quarter to represent seasonal variation [i.e., do not
sample in the same quarter every year]. Unless otherwise indicated,metals shall be analyzed as
"total recoverable."
Ammonia(as N) C0610 Trans-1,2-dichloroethylene 34546 Bis(2-chloroethyl)ether 34273
Chlorine(total residual,TRC) 50060 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate C0100
Nitrate/Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver 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 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-tichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
Page 8 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NC0081621
(b.) Effluent Scan Reporting. Test results shall be reported electronically via eDMR by December
31st of each designated sampling year, except that, subject to prior written approval by the Director,
results can be reported on DWR Form DMR-PPA-1 or other form approved by the Director. The
permittee must at least report completion of the test in the eDMR system by entering 61
1"or"Y"for
parameter code NCO 1 -Annual Pollutant Scan. If written reports are approved,the report shall be
submitted to the following address:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Or the form may be uploaded at: https://edocs.deq.nc.gov/Fonns/NPDES_WW-EDMR-
Supplemental-Form
(c.) 2"-Species Toxicity Testing and Reporting.
(i.) In addition to the quarterly toxicity tests required in Condition A.(3.) (CHRONIC TOXICITY
PERMIT LIMIT(QUARTERLY)),the Permittee shall perform and report the results of four
(4)toxicity tests using the same test methods using a second species of test organism suitable
to the tests being conducted.
(ii.) The 2nd species toxicity tests shall be conducted either:
(A) Once per quarter in a single 12-month period(four samples); if this option is chosen,
the sample for each 2nd species test shall coincide with the quarterly samples collected
for(CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)); or
(B) Once per 12-month period in the four-and one-half year period prior to the scheduled
application for permit renewal(four samples); if this option is chosen,three of the
samples for the 2nd species test shall coincide with those for the annual effluent scans
and the coincident quarterly toxicity test, and each of the four annual samples shall be
collected in a different calendar quarter in order to represent seasonal variation.
(iii.) The results of the toxicity tests shall be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Or,results can be sent to the email, [e-mail].
(iv.) Results of the 2nd species tests shall also be summarized in Part E(Toxicity Testing Data) of
EPA Municipal Application Form 2A when submitting the permit renewal application to the
NPDES Wastewater Program.
The Permittee may contact the Division's Aquatic Toxicology Branch at 919-743-8401 for
guidance on conducting the additional toxicity tests and reporting of the results.
Page 9 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NCO081621
A.(5.) FACILITY CLOSURE REQUIREMENTS
[G.S. 143-215.1 (b)]
Once the construction of the new 1.0 MGD facility with Outfall 002 is completed and the facility submit
the Engineer's Certification of Completion,the Permittee shall submit to the Division a closure plan for
the existing facility(Outfall 001). The plan shall be submitted at least 90 days prior to the closure of the
existing facility covered by this permit. The Division may require specific measures during deactivation
of the facility to prevent adverse impacts to waters of the state. The closure plan shall be submitted to:
NCDEQ/Division of Water Resources NCDEQ/Division of Water Resources
NPDES Permitting Mooresville Regional Office
1617 Mail Service Center 610 East Center Avenue, Suite 301
Raleigh,NC 27699-1617 Mooresville,NC 28115
A.(6.) PFAS MONITORING REQUIREMENT
[G.S. 143-215.1(b.)]
This reporting requirement for the per- and polyfluoroalkyl substances (PFAS) parameters listed under
Table 1 of EPA Method 1633 takes effect the first full calendar quarter following six(6)months after EPA
publishes the method under 40 CFR Part 136 in the Federal Register. Monitoring will be at a quarterly
frequency.
Find the current parameters listed under Table 1 of the Method 1633 Analysis of Per- and Polyfluoroalkyl
Substances(PFAS)in Aqueous, Solid,Biosolids, and Tissue Samples by LC-MS/MS(EPA,January 2024)
at:
https://www.epa.gov/system/files/documents/2024-01/method-1633-final-for-web-posting.pdf
A.(7.) 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.) 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)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR) internet application.
Page 10 of 13

DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NC0081621
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted monthly electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access,then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms(MR 1, 1.1,2, 3)or alternative
forms approved by the Director. Duplicate signed copies shall be submitted to the following address:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
See"How to Request a Waiver from Electronic Reporting"section below.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the
completed reporting period. Regardless of the submission method,the first DMR is due on the last
day of the month following the issuance of the permit or in the case of a new facility, on the last day
of the month following the commencement of discharge.
Starting on December 21,2025,the permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports; and
• Pretreatment Program Annual Reports; and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
The permittee may seek an electronic reporting waiver from the Division(see "How to Request a
Waiver from Electronic Reporting"section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9),the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program)that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
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DocuSign Envelope ID:22278AEC-2FE5-4F19-B80C-7FA360109676
Permit NC0081621
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty(60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary
waiver shall not exceed 5 years and shall thereupon expire. At such time,monitoring data and reports
shall be submitted electronically to the Division unless the permittee re-applies for and is granted a
new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers
are not transferrable. Only permittees with an approved reporting waiver request may submit
monitoring data and reports on paper to the Division for the period that the approved reporting waiver
request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (I 1.)(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:
7 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.)]
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 122.411.
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