NC0021733_Draft Permit_20220318

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR. NORTH CAROLINA
Director Environmental Quality
March 18, 2022
Town of Marshall
Attn: Nancy Allen, Town Manager
P.O. Box 548
Marshall, NC 28753
Transmitted via email to [e-mail]
Subject: Draft NPDES Permit Renewal
Permit NC0021733
Town of Marshall WWTP
Madison County
Facility Grade II (0.4 MGD)
SIC Code 4952
Dear Applicant:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for the Marshall WWTP
(Facility). 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:
• Facility grade was updated from Grade III to Grade II.
• Special Condition A. (3.) includes the specific three years in which the Effluent Pollutant
Scan shall be performed (2023, 2024, and 2025) and information about the proper
completion of annual pollutant scan in the eDMR system.
• Special Condition A. (3.) also includes requirements for the additional toxicity testing.
Samples for this additional test should be collected with one quarterly toxicity test each
year and must represent seasonal variation.
• 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. [See Special Condition A. (4.)].
• 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. (4.)].
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 Madison 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 [phone] or by email at [e-mail].
Sincerely,
Diana Yi arek Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: Marshall WWTP/ Don Byers, ORC
US EPA Region 4
DWR/ Asheville Regional Office (ARO)/ Daniel Boss
DWR/ NPDES Municipal Unit - Pretreatment/ Keyes McGee
DWR/Ecosystems Branch/ Mark Vander Borgh
DWR/Aquatic Toxicology Branch/ Zach Thomas and Cindy Moore
DWR/Operator Certification Program / Maureen Kinney
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000
NORTH CAROLINA
Department of Environmental ouar�

Permit NC0021733
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
Town of Marshall
is hereby authorized to discharge wastewater from a facility located at the
Marshall Wastewater Treatment Plant
NCSR 1001, Marshall
Madison County
to receiving waters designated as the French Broad River in sub -basin 04-03-04 of the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III
and IV hereof.
This permit shall become effective Month xx, 2022.
This permit and authorization to discharge shall expire at midnight on September 30, 2026.
Signed this day Month xx, 2022.
for Richard E. Rogers, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0021733
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this
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.
Town of Marshall is hereby authorized to:
1. Continue discharging 0.400 MGD of treated domestic and industrial wastewater from an activated
sludge wastewater treatment facility that includes the following components:
• Influent bar screen
• Oxidation ditch with rotary aerators
• 36-foot circular clarifier with sludge return
• 90-degree v-notch weir
• Ultrasonic totalizing flow meter
• Aerated sludge -digestion tank with floating mechanical aerator
• Sludge belt press (polymer added)
• 10,000-gallon sludge holding tank
• Sludge drying equipment (loft x 20ft wedgewire screen)
• UV disinfection
• 12.5% sodium hypochlorite liquid feed system (backup chlorination)
• Calcium thiosulfate liquid feed system (backup de -chlorination)
• 8-inch gravity outfall with flap valve
• 50 kW emergency generator
2. Discharge from said treatment works via Outfall 001, at the location specified on the attached map
into the French Broad River currently classified as B waters in the French Broad River Basin.
Page 2 of 8

Permit NC0021733
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.400 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological Water Pollution Control System
[15A NCAC 08G .0302]
a) Beginning with the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored' by the
Permittee as specified below:
EFFLUENT CHARACTERISTICS
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location2
Flow 50050
0.400 MGD
Continuous
Recording
I or E
BOD, 5-day, (20°C)3 C031C
30.0 mg/L
45.0 mg/L
Weekly
Composite
I and E
Total Suspended Solids 3 C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
I and E
NH3 as N C0610
Monitor and Report
2/month
Composite
E
Temperature (°C) 00010
Monitor and Report
Weekly
Grab
E
pH 00400
>6.0and <9.0
— —
standard units
Weekly
Grab
E
Fecal Coliform 31616
(geometric mean)
200/100 mL
400/100 mL
Weekly
Grab
E
Total Residual Chlorine 4 50060
28 pg/L
Weekly
Grab
E
Total Nitrogen (NO2+NO3+TKN) C0600
Monitor and Report
Quarterly
Composite
E
Total Phosphorus C0665
Monitor and Report
Quarterly
Composite
E
Acute Toxicity 5 TGE6C
See Footnote 5
Quarterly
Composite
E
Effluent Pollutant Scan 6 NC01
See Footnote 6
E
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system [see
Special Condition A. (4)].
2. Sample locations: E-effluent, I -influent, U-upstream, D-downstream
3. Monthly average effluent concentrations for BOD5 and TSS shall not exceed 15% of the respective influent values (i.e. 85 %
removal).
4. The Division shall consider all effluent TRC values reported below 50 1.1.g/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 µg/1.
5. Acute toxicity Fathead Minnow P/F @ 90%; quarterly during February, May, August, and November [see A. (2)].
6. The permittee shall perform three effluent pollutant scans during the term of this permit [see A. (3)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 8

Permit NC0021733
A. (2) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY)
115A NCAC 02B.0200 et seq.]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity In A Single Effluent
Concentration" (Revised December 2010, or subsequent versions). The monitoring shall be performed as a
Fathead Minnow (Pimephales promelas) 24-hour static test. The effluent concentration at which there may be
at no time significant acute mortality is 90% (defined as treatment two in the procedure document). The tests will
be performed during the months of February, May, August, and November. These months signify the first
month of each three-month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must
be obtained during representative effluent discharge and shall be performed at the NPDES permitted final effluent
discharge below all treatment processes.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
pass/fail results and TGE6C. Additionally, DWR Form AT-2 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, 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 and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the address
cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above. Assessment of toxicity compliance is based on
the toxicity testing quarter, which is the three-month time interval that begins on the first day of the month in
which toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from either these monitoring requirements 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 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 4 of 8

Permit NC0021733
A. (3) EFFLUENT POLLUTANT SCAN [NCGS 143-215.1 (b)]
a) The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below.
One scan must be performed in each of the following years: 2023, 2024, and 2025. 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) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus Methyl chloride 4-chlorophenyl phenyl ether
Total dissolved solids Methylene chloride Chrysene
Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony Tetrachloroethylene Di-n-octyl phthalate
Arsenic Toluene Dibenzo(a,h)anthracene
Beryllium 1,1,1-trichloroethane 1,2-dichlorobenzene
Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene
Chromium Trichloroethylene 1,4-dichlorobenzene
Copper Vinyl chloride 3,3-dichlorobenzidine
Lead Acid -extractable compounds: Diethyl phthalate
Mercury (EPA Method 1631E) P-chloro-m-cresol Dimethyl phthalate
Nickel 2-chlorophenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dimethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total phenolic compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
Acrolein Phenol Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene
Benzene Base -neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinyl ether Benzo(a)pyrene Phenanthrene
Chloroform 3,4 benzofluoranthene Pyrene
Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene
1,1-dichloroethane Benzo(k)fluoranthene
1,2-dichloroethane Bis (2-chloroethoxy) methane
Page 5 of 8

Permit NC0021733
b) Reporting. Test results shall be reported electronically via eDMR or on DWR Form — DMR-PPA-1 (or
on a form approved by the Director) by December 31st of each designated sampling year.
c) The Permiee 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 / DWR / NPDES Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Or
the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES_WW-EDMR-Supplemental-Form
d) Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four (4) toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application, or four tests performed at least annually in the
four- and one-half year period prior to the application. Samples must represent seasonal variation [i.e.,
do not sample in the same quarter every year]. These tests shall be performed for acute or chronic
toxicity, whichever is specified in this permit. The multiple species toxicity test results shall be filed with
the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or, results can be sent to the email, ATForms.ATB(,ncdenr.gov.
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal
application to the NPDES Permitting Unit.
A. (4) ELECTRONIC REPORTING OF 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)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Page 6 of 8

Permit NC0021733
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 mailing 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.
NPDES Electronic Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025. The current compliance date, effective January 4, 2021, was extended as a final regulation change published
in the November 2, 2020, Federal Register.
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.federalre gister. gov/documents/2015/10/22/2015-24954/national-pollutant-di scharge -elimination-
system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
Page 7 of 8

Permit NC0021733
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.
(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 cert, 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].
Map
Page 8 of 8

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Receiving Stream: French Broad River Stream Class: B
Stream Segment: 6-(54.75) Sub -Basin #: 04-03-04
River Basin: French Broad HUC: 0601010511
County: Madison
SCALE
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Facility Location
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