NC0081370_Draft Permit_20210309

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Governor l�! N‘
MICHAEL S.REGAN ,tea
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
March 9, 2021
City of Claremont
Attn:Jason Brown,City Manager
P.O.Box 446
Claremont,NC 28610
Subject: Draft NPDES Permit Renewal
Permit NC0081370
McLin Creek WWTP
Catawba County
Facility Class II(0.3 MGD)
SIC 4952
Dear Jason Brown:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for the McLin Creek
WWTP.As requested,the three flow tiers remain in effect(0.3, 0.8, and 1.2 MGD). Please
review this draft carefully to ensure a thorough understanding of the requirements and conditions
it contains.There are few changes from the existing permit, including the following:
• Authorization language in the supplement to permit cover sheet was rearranged
consistent with language present on top of the page of Sections A. (1.), A. (2.), and A.
(3.) of the previous permit.
• Special Condition A. (5.) conveys the Effluent Pollutant Scan requirement for this permit
cycle;Effluent Pollutant Scans must be performed in three consecutive years following the
increase to flow tier 1.2 MGD or if the pretreatment program is deemed necessary.
• 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 to calculate permit limitations.Effluent hardness
and instream hardness sampling,upstream of the discharge,have been added to the
effluent limitations and monitoring requirements for the 1.2 MGD flow tier at a quarterly
monitoring frequency [See Section A. (3.), Footnote 9]and for the 0.3 MGD and 0.8
MGD flow tiers, if Effluent Pollutan Scans are deemed necessary [See Section A.(1.)
and A. (2.), Footnote 9].
• Language has been added to Footnotes to include clarification for total nitrogen sampling
requirements. [See Sections A. (1.),A. (2.),and A. (3.),Footnote 5].
• Language has been added to Footnotes to include information on monitoring coalition
programs. [See Sections A. (1.),A. (2.),and A. (3.),Footnote 6].
• Special Condition A.(9.) has been added to request an industrial waste survey (IWS) 180
days after consolidating flow from North WWTP.
• A notation was made concerning the Electronic Reporting Rule—Phase 2 Extension.EPA
extended the Phase 2 deadline from December 21, 2020,to December 21, 2025. Effective
January 4, 2021, the current compliance date was extended as a final regulation change
published in the November 2,2020,Federal Register. [See Special Condition A.(6.)]
NorthNorth CarolinaSalisbury DepartmStreetent of1617 EnvironmentalMailService Ce Qualitynter Raleigh,DivisionNo rt
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• Regulatory citations have been added to the permit.
The NPDES standard conditions (Parts II, III, 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.
Concurrent with this notification, the Division is publishing a notice in a newspaper having
circulation in the general Catawba 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 contact me at(919) 707-9130 or by email at diana.yitbarekna ncdenr.gov.
Sincerely,
a4.4j
Diana Yi a arek, Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: City of Hickory Public Utilities/Robert Shaver, Shawn Pennel,and Caleb Bynum
DWR/Mooresville Regional Office/Cory Basinger and Wes Bell
DWR/Aquatic Toxicology Branch/Zach Thomas and Cindy Moore
DWR/Public Water Supply/Clinton Cook
DWR/Operator Certification Program/Maureen Kinney
Page 2 of 2

Permit NC0081370
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 Environmental Management Commission,and the
Federal Water Pollution Control Act,as amended,the
City of Claremont
is hereby authorized to discharge treated wastewater from a facility located at the
Claremont McLin Creek Wastewater Treatment Plant
2310 JB Road,Claremont,NC
Catawba County
to receiving waters designated as the McLin Creek within the Catawba River Basin,in accordance with effluent
limitations,monitoring requirements,and other applicable 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 March 31,2026.
Signed this day:Month UL), 2021.
DRAFT
For S.Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0081370
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.
City of Claremont is hereby authorized to
1. Continue to operate a 0.30 MGD capacity wastewater treatment facility utilizing a sequencing batch-
reactor type treatment with the following components:
• Catenary bar screen
• Influent pump station with standby power
• Aerobic Digester
• Dual intermittent-cycle extended aeration basins(0.150 MGD each)
• Three(3)tertiary sand filters
• Gas Chlorination
• Chlorine contact chamber
• Dechlorination
• Two(2)aerated sludge holding tanks
• Cascade post-aeration
2. Discharge treated wastewater into McLin Creek,classified as WS-IV;CA waters within the Catawba
River Basin,through Outfall 001. The outfall location is specified on the attached map.
3. Operate a 0.8 MGD wastewater treatment system after obtaining an Authorization to Construct from the
Division.The McLin Creek WWTP system is to be completed in conjunction with the connection and
transfer of all wastewaters from the North WWTP and the rescission of permit NC0032662(0.1 MGD
permitted capacity).
4. Operate a 1.2 MGD wastewater treatment system after obtaining an Authorization to Construct from the
Division to construct and operate a 1.2 MGD wastewater treatment system.
Page 2 of 15

Permit NC0081370
PART I
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS(0.3 MGD)[15A NCAC
02B.0400 et seq.,02B .0500 et seq.]Grade II Biological Water Pollution Control System [15A NCAC 08G
.0302]
a) Beginning on the effective date of this permit and lasting until submittal of an Engineering Certificate
for 0.8 MGD or expiration,the Permittee is authorized to discharge from outfall 001,treated
municipal wastewater. Such discharges shall be limited and monitored'by the Permittee as specified
below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location2
Flow 50050 0.30 MGD Continuous Recording I or E
BOD5(20°C)3 C0310 8.0 mg/L 12.0 mg/L Weekly Composite I and E
April 1-Oct.31
BOD5(20°C)3 C0310 16.0 mg/L 24.0 mg/L Weekly Composite I and E
Nov.1-March 31
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Weekly Composite I and E
Ammonia(NH3 as N) C0610 2.0 mg/L 6.0 mg/L Weekly Composite E
April 1-Oct.31
Ammonia(NH3as N) C0610 4.0 mg/L 12.0 mg/L Weekly Composite E
Nov.1-March 31
Dissolved Oxygen 00300 Daily Average>—5.0 mg/I. Weekly Grab E
mg/L
Fecal Coliform 31616 200/100 mL 400/100 mL Weekly Grab F
(Geometric Mean)
pH 00400 Between 6.0 and 9.0 standard units Weekly Grab E
Total Residual Chlorine 50060 28 I w eekl Grab E
(TRC)4,µg/L µ€/- Y
Temperature,°C 00010 Monitor and Report Weekly Grab E
Total Nitrogen'(TN), C0600 Monitor and Report Quarterly Composite I-
mg/L
Total Phosphorus(TP), C0665 Monitor and Report Quarterly Composite E
mg/L
Effluent Pollutant Scan' NC01 Monitor and Report Footnote 8 Footnote 8 E
Chronic Toxicity' TGP3B See Footnote 7 Quarterly Composite E
Total Hardness'[as 00900 Monitor and Report Quarterly6 Grab U
CaC031,mg/L
Dissolved Oxygen, 00300 Monitor and Report Weekly' Grab U and D
mg/L
Temperature,°C 00010 Monitor and Report Weekly' 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.(6).
2. Sample Location:E—Effluent,I—Influent,U—Upstream at NCSR 1722/Bethany Church Road(South of Claremont);D=
Downstream at NCSR 1722/Old Catawba Rd.(East of Claremont.See map)
3. The monthly average effluent biochemical oxygen demand(BOD5)and total suspended solids(TSS)concentrations shall not
exceed 15%of the respective influent value(85%removal).
4. The Division shall consider all effluent total residual chlorine(TRC)values reported below 50 ug/1 to be in compliance with
the permit. However,the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory(including field certified),even if these values fall below 50 ug/1.
5. For a given wastewater sample,total nitrogen(TN)=TKN+NO3-N+NO2-N,where TKN is total kjeldahl nitrogen,and
NO3-N and NO2-N are nitrate and nitrite nitrogen,respectively.
6. If the Permittee is a member of a monitoring coalition program,sampling may be waived as long as the monitoring coalition
agrees to sample at a minimum frequency of quarterly,and the Permittee has obtained approval from DWR-NPDES
Permitting Unit that the location being monitored by the Coalition and the sampling is representative of the receiving stream
for this discharge.The Permittee is responsible for submitting test results with its permit renewal application package.If
Page 3 of 15

Permit NC0081370
Coalition membership is canceled or the Coalition terminates sampling at the approved station,the Permittee will
immediately notify the Division and resume sampling for upstream of its discharge.
7. Chronic Toxicity(Ceriodaphnia)P/F @ 9%;quarterly during January,April,July,October.See Special Condition A.(4).
8. Optional requirement:If a Pretreatment program is needed,the Permittee shall perform three Effluent Pollutant Scans during
the term of this permit.See Special Condition A.(5).
9. Optional requirement:If Effluent Pollutant Scans are deemed necessary, Effluent Total Hardness sampling shall be
performed in conjunction with testing for hardness-dependent metals(cadmium,copper,lead,nickel,silver,and zinc). The
Permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be representative of the
hardness in the receiving stream.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 15

Permit NC008 1370
A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS(0.8 MGD)[15A NCAC
02B.0400 et seq.,02B .0500 et seq.] Grade III Biological Water Pollution Control System [15A NCAC 08G
.0302]
a) During the period beginning upon submittal of an Engineering Certificate for expansion to 0.8 MGD10
and lasting until expansion to 1.2 MGD or expiration,the Permittee is authorized to discharge from
outfall 001,treated municipal wastewater. Such discharges shall be limited and monitored'by the
Permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER (:ode Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location2
Flow 50050 0.80 MGD Continuous Recording I or E
BODS(20°C)3 C0310 8.0 mg/L 12.0 mg/L 3/Week Composite I and E
April 1-Oct.31
BODS(20°C)3 C0310 16.0 mg/L 24.0 mg/L 3/Week Composite I and E
Nov.1-March 31
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 3/Week Composite I and E
Ammonia(NH3 as N) C0610 2.0 mg/L 6.0 mg/L 3/Week Composite E
April 1-Oct.31
Ammonia(NH3 as N) C0610 4.0 mg/L 12.0 mg/L 3/Week Composite E
Nov.1-March 31
Dissolved Oxygen, 00300 Daily Average>>5.0 mg/L Weekly Grab E
mg/L
Fecal Coli rm
Mean)
200/100 m m L 400/100 L 3/Week Grab E
(Geometric Mean)
pH 00400 Between 6.0 and 9.0 standard units Weekly Grab E
Total Residual Chlorine 50060 28 µg/L 3/Week Grab E
(TRC)4,µg/L
Temperature,°C 00010 Monitor and Report Weekly Grab E
Total Nitrogen S(TN), C'0600 Monitor and Report Quarterly Composite E
mg/L
Total Phosphorus(TP), C0665 Monitor and Report
mg/L
p Quarterly Composite E
Effluent Pollutant Scan' NC01 Monitor and Report Footnote 8 Footnote 8 E
Chronic Toxicity' TGP3B See Footnote 7 Quarterly Composite E
Total Hardness'[as 00900 Monitor and Report Quarterly' Grab U
CaC031,mg/L
Dissolved Oxygen, 00300 Monitor and Report Weekly' Grab U and D
mg/L
Temperature,°C 00010 Monitor and Report Weekly' 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.(6).
2. Sample Location:E—Effluent,I—Influent,U—Upstream at NCSR 1722/Bethany Church Road(South of Claremont);D=
Downstream at NCSR 1722/Old Catawba Rd.(East of Claremont.See map)
3. The monthly average effluent biochemical oxygen demand(BODS)and total suspended solids(TSS)concentrations shall not
exceed 15%of the respective influent value(85%removal).
4. The Division shall consider all effluent total residual chlorine(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.
5. For a given wastewater sample,total nitrogen(TN)=TKN+NO3-N+NO2-N,where TKN is total kjeldahl nitrogen,and
NO3-N and NO2-N are nitrate and nitrite nitrogen,respectively.
6. If the Permittee is a member of a monitoring coalition program,sampling may be waived as long as the monitoring coalition
agrees to sample at a minimum frequency of quarterly,and the Permittee has obtained approval from DWR-NPDES
Permitting Unit that the location being monitored by the Coalition and the sampling is representative of the receiving stream
for this discharge.The Permittee is responsible for submitting test results with its permit renewal application package.If
Coalition membership is canceled or the Coalition terminates sampling at the approved station,the Permittee will
immediately notify the Division and resume sampling for upstream of its discharge.
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Permit NC008 1370
7. Chronic Toxicity(Ceriodaphnia)P/F @ 19%;quarterly during January,April,July,October.See Special Condition A.
(4).
8. Optional requirement:If a Pretreatment program is needed,the Permittee shall perform three Effluent Pollutant Scans during
the term of this permit.See Special Condition A.(5).
9. Optional requirement:If Effluent Pollutant Scans are deemed necessary, Effluent Total Hardness sampling shall
be performed in conjunction with testing for hardness-dependent metals(cadmium,copper,lead,nickel,silver,
and zinc). The Permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the receiving stream.
10. Expansion to a permitted flow of 0.8 MGD at McLin Creek WWTP is contingent upon connection and transfer of all
wastewaters received at the North WWTP to the McLin Creek WWTP,and rescission of permit NC0032662.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 6 of 15

Permit NC008 1370
A.(3.)EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS(1.2 MGD)[15A NCAC
02B.0400 et seq.,02B.0500 et seq.] Grade III Biological Water Pollution Control System [15A NCAC 08G
.0302]
a) During the period beginning upon submittal of an Engineering Certificate for the expansion to 1.2
MUD10 and lasting until expiration,the Permittee is authorized to discharge from outfall 001,treated
municipal wastewater. Such discharges shall be limited and monitored'by the Permittee as specified
below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location2
Flow 50050 1.2 MGD Continuous Recording I or E
BOD5(20°C)3 C0310 8.0 mg/L 12.0 mg/L 3/Week Composite I and E
April 1-Oct.31
BOD5(20°C)3 C0310 16.0 mg/L 24.0 mg/L 3/Week Composite I and E
Nov.1-March 31
Total Suspended Solids' C0530 30.0 mg/L 45.0 mg/L 3/Week Composite I and E
Ammonia(NH3 as N) C0610 2.0 mg/L 6.0 mg/L 3/Week Composite E
April 1-Oct.31
Ammonia(NH3 as N) C0610 4.0 mg/L 12.0 mg/L 3/Week Composite E
Nov.1-March 31
Dissolved Oxygen, 00300 Daily Average>—5.0 mg/L 3/Week Grab E
mg/L
Fecal Coliform 31616 200/100 mL 400/100 mL 3/Week Grab 1-
(Geometric Mean)
pH 00400 Between 6.0 and 9.0 standard units Weekly Grab L
Total Residual Chlorine 50060 28 ug/L 3/Week Grab I:
(TRC)4,pg/L
Temperature,°C 00010 Monitor and Report Weekly Grab E
Total Hardness v[as 00900 Monitor and Report Quarterly Composite L
CaC031,mg/L
Total Nitrogen s(TN), CO600 Monitor and Report Quarterly Composite E
mg/L
Total Phosphorus(TP), C0665 Monitor and Report Quarterly Composite E
mg/L
Effluent Pollutant Scan° NC01 Monitor and Report Footnote 8 Footnote 8 E
Chronic Toxicity' TGP3B See Footnote 7 Quarterly Composite E
Total Hardness'[as 00900 Monitor and Report Quarterly° Grab U
CaC031,mg/L
Dissolved Oxygen, 00300 Monitor and Report Weekly° Grab U and D
mg/L
Temperature,°C 00010 Monitor and Report Weekly° 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.(6).
2. Sample Location:E—Effluent,I—Influent,U—Upstream at NCSR 1722/Bethany Church Road(South of Claremont);D=
Downstream at NCSR 1722/Old Catawba Rd.(East of Claremont.See map)
3. The monthly average effluent biochemical oxygen demand(BOD5)and total suspended solids(TSS)concentrations shall not
exceed 15%of the respective influent value(85%removal).
4. The Division shall consider all effluent total residual chlorine(TRC)values reported below 50 ug/1 to be in compliance with
the permit. However,the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory(including field certified),even if these values fall below 50 ug/1.
5. For a given wastewater sample,total nitrogen(TN)=TKN+NO3-N+NO2-N,where TKN is total kjeldahl nitrogen,and
NO3-N and NO2-N are nitrate and nitrite nitrogen,respectively.
6. If the Permittee is a member of a monitoring coalition program,sampling may be waived as long as the monitoring coalition
agrees to sample at a minimum frequency of quarterly,and the Permittee has obtained approval from DWR-NPDES
Permitting Unit that the location being monitored by the Coalition and the sampling is representative of the receiving stream
for this discharge.The Permittee is responsible for submitting test results with its permit renewal application package.If
Page 7 of 15

Permit NC008 1370
Coalition membership is canceled or the Coalition terminates sampling at the approved station,the Permittee will
immediately notify the Division and resume sampling for upstream of its discharge.
7. Chronic Toxicity(Ceriodaphnia)P/F @ 27%;quarterly during January,April,July,October.See Special Condition A.
(4).
8. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit.See Special Condition A.(5).
9. Effluent Total Hardness sampling shall be performed in conjunction with testing for hardness-dependent metals(cadmium,
copper,lead,nickel,silver,and zinc). The Permittee shall sample instream hardness upstream of the facility's discharge.The
sample shall be representative of the hardness in the receiving stream.
10. Before submitting an authorization to construct(ATC)for the expansion to 1.2 MGD the permittee shall submit a flow
justification to the NPDES Municipal Permitting Unit describing projected flows for a 20 year planning period.See Special
Condition A.(8)
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 8 of 15

•
Permit NC0081370
A.(4.)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 9%(0.3 MGD)/19%(0.8 MGD)/27%(1.2 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 II Chronic Whole Effluent Toxicity Test Procedure"(Revised-December
2010)or subsequent versions.The tests will be performed during the months of January,April,July,October.
Effluent sampling for this testing 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 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,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.
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.
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Permit NC0081370
A.(5.)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. The
next scans must be performed in three consecutive years following the increase to tier 1.2 MGD or if
the pretreatment program becomes active. 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 l,l-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate CO100
Nitrate/Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 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 orrafccnnmounds: 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-trichlorobenzene C0551
1,1-dichloroethane 34496 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 31 st of each designated sampling
year.
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Permit NC0081370
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:
NC DEQ/Division of Water Resources/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(jx5).
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:
NC DEQ/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. (6.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(B)]
Federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and program
reports.The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B.(11.) Signatory Requirements
• Section D.(2.) Reporting
• Section D.(6.) Records Retention
• Section E.(5.) Monitoring Reports
1. Reporting Requirements[Supersedes Section D.(2.)and Section E.(5.)(a)l
The Permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report(eDMR)internet application.
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Permit NC0081370
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:
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 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.
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/doctunents/2015/10/22/2015-24954/national-pollutant-di scharge-elimi nati on-
system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic 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
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Permit NC0081370
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. Sianatory Requirements (Supplements Section B.(11.)(b)and Supersedes Section B.(11.)(d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,Section B.
(11.)(a)or by a duly authorized representative of that person as described in Part II,Section B.(11.)(b). A
person,and not a position,must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR,and obtaining an eDMR user account,please visit the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification[40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I 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.)1
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 requestany of the Director at time[40 CFR 122.41].
A.(7.)MERCURY SAMPLING
The Permittee shall provide one effluent mercury analysis,using EPA Method 1631E,in conjunction with the
next permit renewal application.The analysis should be taken within 12 months prior to the application date.
Any additional effluent mercury measurements conducted from the effective date of this permit and up to the
application date shall also be submitted with the renewal a appl
ication.
If the results of the mercury analysis is not provided with the application,the application may be returned as
incomplete and the Permittee considered non-compliant.
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Permit NC008 1370
A.(8.)FLOW JUSTIFICATION FOR 1.2 MGD
The Permittee shall submit a flow justification for 1.2 MGD to DWR for review and Division's approval before
submitting an Authorization to Construct for 1.2 MGD.The flow justification must include flow projections for
future commercial,residential or industrial flows for a 20 year planning period.The justification shall be
submitted to the NPDES Municipal Permitting Unit at the following address:
NC DEQ/Division of Water Resources/NPDES Municipal Permitting Unit
1617 Mail Service Center
Raleigh,NC 27699-1617
A.(9.)INDUSTRIAL WASTE SURVEY
The Permittee shall submit an industrial waste survey(IWS) 180 days following the connection of the North
WWTP. The IWS shall be submitted to the NPDES Municipal Permitting Unit at the following address:
NC DEQ/Division of Water Resources/NPDES Municipal Permitting Unit/Pretreatment
1617 Mail Service Center
Raleigh,NC 27699-1617
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Permit NC0081370
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McLin Creek WWTP-NC0081370 Facility Location (not to scale)
City of Claremont-Catawba County
Receiving Stream: McLin Creek Stream Class: WS-IV;CA {
Drainage Basin: Catawba River Basin Sub-Basin: 03-08-32
Permitted Flow: 0.3/0.8/1.2 MGD HUC: 030500101 1 N
7.4%State Grid/USGS Quad: E14NE/Catawba,N.C. rr3
Latitude 35.41'44"N Longitude 81°07'19"W
Page 15 of 15