NC0020451_Permit (Issuance)_20230612

DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
ROY COOPER 6 7I
Governor l'tr s
ELIZABETH S.BISER
Secretary r�a•w+•e#
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
June 12,2023
Mr. Brandon Patrick
Town of West Jefferson
PO Box 490
West Jefferson,NC 28694-0490
Subject: Final NPDES Permit Renewal
Permit NC0020451
West Jefferson WWTP
Ashe County
Grade II Biological WPCS
SIC Code 4952
Dear Mr. Patrick:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between
North Carolina and the U.S.Environmental Protection Agency dated October 15,2007(or as subsequently
amended).
The following changes have been made to the draft permit sent to you on February 22,2023.
• The TSS limits were corrected to what was in the previous permit[See A. (1.)].
• Mentions of Total Silver and Total Zinc were removed from the Copper compliance schedule as
correction [See A. (5.)].
For more information regarding decisions made to comments received, please see the Fact Sheet, Section
15 —Fact Sheet Addendum.
The final permit maintains the significant changes made to the draft permit sent to you on February
22,2023:
• Based on numerous decreases of downstream dissolved oxygen (DO) concentrations compared to
concurrent upstream concentrations,the effluent DO limit has been adjusted to daily average minimum
of 7.0 mg/L[see A. (1.)].
• To provide more information regarding effluent nutrient concentrations in light of trends of increasing
nutrient concentrations downstream, Total Nitrogen and Total Phosphorus monitoring has been
increased from 2/year to quarterly. In addition, Total Kjeldahl Nitrogen (TKN) and Nitrate-Nitrite
Nitrogen (NO3-N+NO2-N)quarterly monitoring and reporting have been added to the permit.
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate state water
quality standards using recent hardness data,Total Copper limits have been revised [See A.(1.)].
• To provide an opportunity for the Town to develop a plan to assess sources of Total Copper in order to
come in compliance with the revised limits in Section A. (1.),a 3-year schedule of compliance with the
_E North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh.North Carolina 27699-1611
"004.
" T C n ru 919.707.9000
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
option to conduct a Water Effect Ratio (WER) study has been added to the permit [See Special
Condition A. (5.) Schedule of Compliance].
• Based on the RPA showing no reasonable potential to violate state water quality standards using recent
hardness data, Total Selenium monitoring requirements have been removed from the permit [See A.
(I.)].
• Based on the RPA showing reasonable potential to violate state water quality standards using limited
data(n<8 samples)with one result greater than the allowable concentration, quarterly monitoring for
Toluene has been added to the permit [See A.(1.)].
• To provide more information regarding the PFAS chemicals in POTW effluents statewide, 2/year
monitoring with delayed implementation has been added to the permit [See A.(1.) and Special
Condition A.(5.)PFAS Monitoring Requirements].
• Language in Footnote 3 has been modified to read "The facility shall monitor TRC when using
chlorination for disinfection."for clarity[See A.(1.)].
• Instream monitoring requirements have been placed as a separate section [See A.(2.)].
• To provide more information regarding effluent nutrient impacts on the receiving stream, instream
monitoring for Total Nitrogen,Total Kjeldahl Nitrogen,Nitrate-Nitrite Nitrogen and Total Phosphorus
has been added to the permit at a quarterly frequency[See A.(2.)].
• A footnote was added to the instream monitoring section [A.(2.)] to provide the Permittee a
provisionary waiver for membership in a monitoring coalition. However, the waiver would not apply
to upstream Hardness as monitoring coalitions do not sample for this parameter.
• Some of the wording has changed in Special Condition A.(3.) Chronic Toxicity Permit Limit. Please
review the condition carefully.
• Special Condition A.(4.) has been modified to include the specific three years in which the Effluent
Pollutant Scan shall be performed(2025, 2026, and 2027). In addition, some wording and structure of
the condition have changed. Please review the condition carefully.
• 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.
• 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.(6.)].
Pretreatment updates in response to NPDES permit renewal:
• On January 28, 2024, 180 days after the effective date of this NPDES permit renewal, the City 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 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.
North Carolina Department of Environmental Q I Division Resources
D Q, „,,,,--- �� 512 North Salisbury Street 1161 I Mail Service Centeruality I Raleigh of,NorthWater Carolina 27699-1611
TM 919.707.9000
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
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.
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 Gary Perlmutter at(919) 707-3611 or via
email at [e-mail].
Sincerely,
—oocusbn.a by:
�-306B09556D41400
for Richard E. Rogers Jr., Director
Division of Water Resources,NCDEQ
Hardcopy: NPDES Files
eCopy: US EPA Region 4
DWR/Winston-Salem Regional Office/Water Quality/Lon Snider
DWR/Ecosystems Branch/Mark Vander Borg
DWR/Basin Planning/Nora Deamer
DWR/Aquatic Toxicology Branch/Cindy Moore
DWR/Municipal Permitting Unit/Keyes McGee
Add VA rep
SELC/Henry Gargan([e-mail])
D_E Q North Carolina Der7rhnent of Environmental Quality I Division of Water Resources
512 North Salisbury Street I161 I Mail Service Center I Raleigh.North Carolina 27699-1611
NORTH a w^ �/ 919.707.9000
D4rtlr+d 6wYwwiW 41\

DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
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
Town of West Jefferson
is hereby authorized to discharge wastewater from a facility located at the
West Jefferson Wastewater Treatment Plant
335 Clearwater Drive
West Jefferson
Ashe County
to receiving waters designated as the unnamed tributary to Little Buffalo Creek in the New River Basin in
accordance with the effluent limitations,monitoring requirements, and other applicable conditions set forth in
Parts I, II, III,and IV hereof.
This permit shall become effective August 1, 2023.
This permit and authorization to discharge shall expire at midnight on March 31,2028.
g P g
Signed this day June 12,2023.
L
,DocuSfgMd by:
306B09556D4140D..
for Richard E. Rogers,Jr., Director
Division of Water Resources
By Authority of the Environmental Management Commission
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DocuSign Envelope ID:CEAA61-70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As
of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The Town of West Jefferson
is hereby authorized to:
1. Continue to operate and maintain the wastewater treatment works identified on the Cover,an existing 0.5
MGD facility consisting of the following components:
• Mechanical bar screen
• Manual bar screen bypass channel
• Chain&bucket grit collector
• Influent pump station with three(3)434 GPM pumps
• Dual channel concentric oxidation ditches with dual with four(4)20 hp aerators
• Two(2)45-foot diameter secondary clarifiers
• Dual traveling bridge tertiary filters
• In-channel ultraviolet disinfection with two banks of lamps
• Post aeration basin with diffused air
• Aerobic digestion basin with two(2)blowers
• Two 521 GPM return sludge pumps
• 50 KW standby generator
• Associated yard piping and site work electrical work
2. Discharge from said treatment works at the location specified on the attached map via Outfall 001 into an
unnamed tributary to Buffalo Creek, classified C; Tr;+(North Fork New River Outstanding Resource
Water area)waters in the New River Basin and 05050001 HUC.
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DocuSign Envelope ID:CEAA6F70-1334E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
PART I
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 10.5 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 permit expiration, 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:
PARAMETER EFFLUENT LIMITS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location
Flow 50050 0.5 MGD Continuous Recording Influent or
Effluent
BOD,5-day,20 C z Influent&
(Apr 1 -Oct 31) C0310 5.0 mg/L 7.5 mg/L Weekly Composite Effluent
BOD,5-day,20°C z C0310 10.0 mg/L15.0 m Weekly Composite
Influent&
(Nov 1 -Mar 31) po Effluent
Total Suspended Solids 2 C0530 10.0 mg/L 15.0 mg/L Weekly Composite Influent&
Effluent
NH3 as N(Apr 1 -Oct 31) C0610 1.6 mg/L 4.8 mg/L Weekly Composite Effluent
NH3 as N(Nov 1 -Mar 31) C0610 3.6 mg/L 10.8 mg/L Weekly Composite Effluent
Dissolved Oxygen(DO) 00300 Daily Average>_7.0 mg/L Daily Grab Effluent
pH 00400 Between 6.0 and 9.0 Standard Units Weekly Grab Effluent
Temperature,°C 00010 Monitor and Report Weekly Grab Effluent
Conductivity,µmhos/cm 00094 Monitor and Report Daily Grab Effluent
Fecal Colifomi(geometric mean) 31616 200/100 mL 400/100 mL Grab Weekly Grab Effluent
Total Residual Chlorine(TRC)3 50060 28 µg/L 2/week Grab Effluent
TKN,mg/L 4 00625 Monitor and Report Quarterly Composite Effluent
NO3-N+NO2-N,mg/L 4 00630 Monitor and Report Quarterly Composite Effluent
Total Nitrogen,mg/L4 C0600 Monitor and Report Quarterly Calculated Effluent
Total Phosphorus,mg/L C0665 Monitor and Report Quarterly Composite Effluent
Total Hardness(as CaCO3),mg/L 00900 Monitor and Report Quarterly Composite Effluent
Total Copper,interim' 01042 37.0 µg/L 52.0 µg/L Monthly Composite Effluent
Total Copper,fmal 5 01042 18.8 µg/L 26.1 µg/L Monthly Composite Effluent
Toluene,µg/L 39100 Monitor and Report Quarterly Composite Effluent
PFAS 6 various Footnote 6 2/year Grab Effluent
Chronic Toxicity' TGP3B Monitor and Report Quarterly Composite Effluent
Effluent Pollutant Scan g NC01 Monitor and Report Footnote 8 Footnote 8 Effluent
Footnotes on the next page.
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
Footnotes:
1. The Permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system.
See Special Condition A. (7.).
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the respective
influent value(85%removal).
3. The facility shall monitor TRC when using chlorination for disinfection.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(including field-certified),even if these values
fall below 50 pg/L.
4. 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.
5. The Permittee shall shall follow the Total Copper compliance schedule detailed in Special Condition A. (5.). Starting on
the effective date of this permit,the Permittee shall continue to perform monthly effluent Monitoring and Reporting for
Total Copper and meet compliance with the interim limits.
6. See Special Condition A. (6.).
7. Chronic Toxicity (Ceriodaphnia dubia) P/F at 56% 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.).
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
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DocuSign Envelope ID:CEAA6F70-1334E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
A.(2.) INSTREAM MONITORING REQUIREMENTS [15A NCAC 02B .0200 et seq.]
Beginning on the effective date of this permit and lasting until the expiration date, the Permittee shall perform
instream sampling upstream and downstream of Outfall 001 as specified below l:
PARAMETER SAMPLE MONITORING FREQUENCY SAMPLE
Parameter Code TYPE LOCATION 2
Jun 1—Sep 30 Oct 1—May 31
Total Hardness(as CaCO3), 00900 Surface QuarterlyUpstream
m�3 P
Temperature,°C 00010 Surface 3/week Weekly Upstream,
Downstream
Dissolved Oxygen(DO),mg/L 00300 Surface 3/week Weekly Upstream,
Downstream
Conductivity,µmhos/cm 00094 Surface 3/week Weekly Upstream,
Downstream
TKN,mg/L 4 00625 Surface Quarterly Upstream,
Downstream
NO3-N+NO2-N,mg/L 4 00630 Surface Quarterly Upstream,
Downstream
Total Nitrogen,mg/L 4 C0600 Surface Quarterly Upstream,
Downstream
Total Phosphorus,mg/L C0665 Surface Quarterly Upstream,
Downstream
Footnotes:
1. If the Permittee is a member of a Monitoring Coalition Program,sampling for instream parameters listed may be waived
if the Monitoring Coalition agrees to sample the listed parameters at the nearest upstream and downstream location at a
minimum frequency of monthly,and the Permittee has obtained approval from DWR—NPDES Permitting Unit that the
upstream and downstream stations being monitored by the Coalition are representative of the receiving stream for this
discharge.If Coalition membership is cancelled or the Coalition terminates instream monitoring at the approved stations,
the Permittee will immediately notify the Division and resume sampling for the above listed parameters upstream and
downstream of its discharge.
2. Upstream is located approximately 50 feet above the discharge point;Downstream is located at the bridge off of Dogget
Road.
3. The Pennittee shall sample instream Total Hardness, upstream of the facility's discharge.
4. For a given instream 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.
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DocuSign Envelope ID:CEAA6F70-634E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
A.(3.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B .0200, 15A NCAC 02B .0500 et sect]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 56%.
The permit holder shall perform at a minimum,quarterly monitoring using test procedures outlined in the"North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,"(Revised December 2010,or subsequent versions)
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised December 2010, or
subsequent versions). The tests will be performed during the months of January, April, July, and October.
These months signify the first month of each three-month toxicity testing quarter assigned to the facility.Effluent
sampling for this testing must be obtained during representative effluent discharge and shall be performed at the
NPDES permitted 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,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.
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
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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DocuSign Envelope ID:CEAA6F70-1334E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
A.(4.) ADDITIONAL MONITORING REQUIREMENTS FOR MUNICIPAL DISCHARGERS
[NCGS 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: 2025, 2026, and
2027. 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 COI00
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-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
(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
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
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"1"or"Y"for parameter code NC01 -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/Forms/NPDES_WW-EDMR-Supplemental-
Form
(c.) 2°d-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 species 2°d ecie 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(tox condition
title); 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 sample 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.
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
Permit NC0023981
A. (5.) SCHEDULE OF COMPLIANCE FOR TOTAL COPPER LIMITATIONS[NCGS 143-215.1 (b)]
This compliance schedule includes the option for pursuing a Water Effect Ratio(WER)study for developing site-
specific limitations and compliance with the Total Copper limits.
1. If the Permittee wishes to conduct a WER study to develop site-specific metal limitations,within six(6)
months of the permit effective date, the Permittee shall submit to the Division of Water Resources a
Water-Effect Ratio(WER)study plan for approval.
a. Within eighteen (18)months of the WER study plan approval by the Division, the Permittee shall
submit to the Division a report summarizing the results of the WER study.If more than one metal
is included in the WER study,a synergistic WER shall be conducted.
b. If the WER study results in site-specific metal limits,the Permittee shall submit to the Division a
permit modification request to include the WER-derived limits subject to review and approval by
the Division and the appropriate permit modification process.
c. The final metal limits based on the WER-derived limits, if approved, will be placed into effect
immediately with the permit modification and all remaining schedule items will be removed.
2. If the Permittee does not submit a WER study plan within six(6)months of the permit effective date,then
the Permittee shall follow the Compliance Schedule outlined below (replacing the schedule in section
A.5.1. above)and substitute the dates for one,two and three years from the permit effective date:
a. Within one (1) year of the permit effective date, the Permittee shall submit to the Division of
Water Resources a Corrective Action Plan(CAP)for Division approval,summarizing the strategy
or actions to be taken to achieve compliance with the Total Copper limitations listed in Section
A. (1.). This plan will include specific dates for completion or implementation of each action.
b. Within two(2)years of the permit effective date,the Permittee shall submit a report to the Division
summarizing actions taken in accordance with the Action Plan.
c. The Permittee shall achieve compliance with Total Copper limitations specified in Section A. (1.)
within three(3)years of the permit effective date.
Upon approval of the CAP by the Division,the report and actions become an enforceable part of this permit. The
Division can reopen this permit to implement interim or alternative limits based on studies that demonstrate an
interim or alternate limit is appropriate. Any modifications to the schedule shall be requested to the Division at
least ninety(90)days before the deadline. Modifications to the schedule in excess of four months will be subject
to public notice.
The WER Study Plan,CAP and all reports shall include the owner's name, NPDES permit number and Permittee
contact person, and shall be submitted to:
(1)NCDEQ/Division of Water Resources (2)NCDEQ/Division of Water Resources
NPDES Permitting Asheville Regional Office
1617 Mail Service Center 2090 US 70 Highway
Raleigh,NC 27699-1617 Swannanoa,NC 28778-8211
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
NC0020451
A.(6.) PFAS MONITORING REQUIREMENT [NCGS 143-215.1(b)]
This reporting requirement for the per- and polyfluoroalkyl substances (PFAS) parameters listed under
Table 1 of the Final Method 1633 takes effect the first full calendar quarter following six(6)months after
EPA publishes a 40 CFR part 136 Final PFAS Method for wastewater in the Federal Register. Monitoring
will be at a 2/year frequency.
Find the current parameters listed under Table 1 of the 3`d Draft Method 1633 Analysis of Per- and
Polyfluoroalkyl Substances (PFAS)in Aqueous, Solid,Biosolids,and Tissue Samples by LC-MS/MS at:
https://www.epa.gov/system/files/documents/2022-
12/3rd%20Draft%20Method%201633%20December%202022%2012-20-22 508.pdf
A.(7.) ELECTRONIC REPORTING-DISCHARGE MONITORING REPORTS
[NCGS 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)j
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 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
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
NC0020451
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.
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
PP Y
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:
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DocuSign Envelope ID:GEAA6F70-B34E-49DB-B69E-B1F864C1BC91-
NC0020451
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B.(11.)(b)and Supersedes Section B. (11.)(d)l
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. Anyperson submittingan electronic DMR usingthe state's eDMR system shall make
Y
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 request of the Director at any time [40 CFR 122.41].
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DocuSign Envelope ID:CEAA6F70-B34E-49DB-B69E-B1F864C1BC9F
NC0020451
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Latitude: 36°24'35'N State Grid: JeIle:son 813 SW not to scale
Longitude: 80°29'26'W Permitted Flow: 0.500 MGO ,
Receiving Stream: UT Little Buffalo Creek Drainage Basin: New River Pa,,. NPDES Permit No.NC0020451
Stream Gass: C-Trout. 8-DI[itHUC: 05050001 /VO/111 Ashe County
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