NC0021849_Draft Permit_20231114

STATE
ROY COOPER
_
Governor
+ _
ELIZABETH S. BISER`
+$ +
Secretary
RICHARD E. ROGERS, JR.
NORTH CAROLINA
Director
Environmental Quality
November 14, 2022
M s. Jani ce M cKenzi e Col e
Town of Hertford
PO Box 32
Hertford, NC 27944
Subject: Draft NPDES Permit NCO021849
Hertford WWTP
Grade WW
Perqui mans County
Dear Permittee:
The Division has reviewed your request to renew the subject permit. Enclosed with this letter is a copy of the draft
permit for your facility. Please review this draft carefully to ensure your thorough understanding of the
information, conditions, and requirements it contains.
Thedraft permit includesthe following significant changesfrom theexisting permit:
Electronic data submission requirements have been updated.
Due to the ongoing compliance problems (non-compl i ant inspections) at your facility, monitoring cannot
be reduced at thistime. However, you can request monitoring reduction at the next permit renewal.
The NPDES standard conditions (Parts 11, 111, and IV) that area part of the permit are not included in this draft
document (cover, map, and Part 1). The conditions are the same as i n your current permit except that agency and
division names have been updated. The latest version isavailableat https://_bit.ly/3k5NFaL and can beviewed
onl i ne or downs oaded as a PD F f i I e.
With thi s noti f i cati on, the Division will solicit public comment on thisdraft permit by publishing a notice in
newspapers havi ng a rcul ati on i n the general Perqui mans County area, per EPA requi rements. PI ease pr ovi de
your comments, if any, to meat thee -mail address below no later than 30days after receiving this draft
permit.
Fol I owi ng the 30-day publ i c comment peri od, the Di vi si on wi I I revi ew ai I perti nent comments and take
appropri ate acti on pri or to i ssui ng a f i nal permit.
If you have questi ons concerni ng the draft, pl ease contact meat [e-mail].
Si ncerel y,
Environmental Specialist 11
NPDES Compliance and Expedited Pennitting
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
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Permit NCO021849
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
10111118101
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 Hertford
is hereby authorized to discharge wastewater from a facility located at the
Hertford Wastewater Treatment Plant
114 West Grubb Street
Hertford
Perquimans County
to receiving waters designated as the Perquimans River in the Pasquotank 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
This permit and authorization to discharge shall expire at midnight on December 31, 2027.
If the permittee intends to continue to discharge at the facility beyond the term of this permit, a renewal
application must be submitted no later than July 4, 2028 (180 days before the expiration of this permit).
Signed this day
Richard E. Rogers, Jr., Director
Division of Water Resources
By Authority of the Environmental Management Commission
SUPPLEMENT TO PERMIT COVER SHEET
Page 1 of 7

Permit NCO021849
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 Hertford is hereby authorized to:
1. Continue to operate a 0.7 MGD wastewater treatment system that includes the following
components:
• Dual Mechanical bar screens
• Dual Parshall flumes (with two flow meters)
• Grit removal system
• Influent pump station with three pumps
• Oxidation ditch
• Flow splitter.
• Two (2) Secondary Clarifiers
• WAS pump station with dual pumps
• Dual automatic backwashing disk filters
• Chlorination using gaseous chlorine
• Dual 27,500 gallon chlorine contact chambers
• Dechlorination using sulfur dioxide gas
• Outfall diffuser
• One 55,000 gallon aerobic sludge digester
• One 328,000 gallon sludge holding basin, with fine bubble diffusers
• Sludge drying beds
• Sludge loading station for trucks
• Three (3) 125 kW back up generators with automatic transfer switches
• Flow meter downstream of the chlorine contact chamber and sulfur dioxide injection
This facility is located at the Hertford WWTP (114 West Grubb Street) in Perquimans County.
2. Discharge from said treatment works at the location specified on the attached map via Outfall 002
into the Perquimans River, currently classified SC [Stream Index: 30-6-(3)] in subbasin 03-01-52
[HUC: 030102050303] of the Pasquotank River Basin.
Page 2 of 7

Permit NCO021849
Part I.
Grade WW-3 Biological Water Pollution Control System [15A NCAC 08G .0302]
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
is authorized to discharge from Outfall 002. Such discharges shall be limited and monitored' by the Permittee
as specified below:
EFFLUENT
DISCHARGE LIMITATIONS
MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly
Weekly
Daily
Measurement
Sample
Sample
Parameter Codes)
Avera a
Average
Maximum
Frequency
Tvve
Location
Flow (50050)
0.7 MGD
Continuous
RecordingInfluent
or
Effluent
BOD, 5-Day, (20°C) 2 -
15.0 mg/L
22.5 mg/L
3/Week
Composite
Influent and
Summer C0310
Effluent
BOD, 5-Day, (20°C) 2 —
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent and
Winter C0310
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent and
CO530
Effluent
NH3 as N — Summer
4.0 mg/L
12.0 mg/L
3/Week
Composite
Effluent
CO610
NH3 as N - Winter
8.0 mg/L
24.0 mg/L
3/Week
Composite
Effluent
CO610
Dissolved Oxygen 00300
Dail average > 5.0 m =/L
3/Week
Grab
Effluent
Dissolved Oxygen (00300)
3/Week
Grab
Upstream &
June 1 — September 30
Downstream
Dissolved Oxygen (00300)
Weekly
Grab
Upstream &
October I — May 31
Downstream
Enterococci (61211)
35 /100 ml
276 / 100
3/Week
Grab
Effluent
(geometric mean
ml
Total Residual Chlorine 3
TRC 50060
13 µg/L
3/Week
Grab
Effluent
Temperature 00010
Daily
Grab
Effluent
Temperature (00010)
3/Week
Grab
Upstream &
June 1— September 30
Downstream
Temperature (00010)
Weekly
Grab
Upstream &
October 1— May 31
Downstream
Total Phosphorus C0665Quarterly
Composite
Effluent
Total Nitrogen (CO600)
Quarterly
Composite
Effluent
O2+NO3+
H 00400
> 6.8 and < 8.5 standard units
3/Week
Grab
Effluent
Total Mercury COMER
See Note 4
Grab
Effluent
*Summer: April 1— October 31; Winter: November 1— March 31
FooTNOTES:
1. Upstream = At least 100 feet upstream from the confluence with the Perquimans River. Downstream = At least 100
feet downstream from the confluence with the Perquimans River.
2. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of their
respective influent values (85% removal).
Page 3 of 7

Permit NCO021849
3. Limit and monitoring apply only if chlorine or chlorine derivatives are used for disinfection. The Division shall
consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit. However, the Permittee
shall record and submit all values reported by a North Carolina certified laboratory (including field certified), even if
these values fall below 50 µg/L.
4. See Condition A. (2) for mercury monitoring and reporting requirements.
5. Permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A. (3.)].
There shall be no discharge offloating solids or visible foam in other than trace amounts.
A. (2.) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.66]
The Permittee shall provide one effluent mercury analysis, using EPA Method 1631 E, in conjunction with
the next permit renewal application. The analysis should be taken within 12 months prior to the renewal
application submission. 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 application.
If the result of the mercury analysis is not provided with the application, the application may be returned as
incomplete and the Permittee considered non -compliant.
A. (3.) ELECTRONIC REPORTING OF 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.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Renortin¢ 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.
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: h=s://deg.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
Page 4 of 7

Permit NCO021849
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the
completed reporting period. Regardless of the submission method, the first DMR is due on the last
day of the month following the issuance of the permit or in the case of a new facility, on the last day
of the month following the commencement of discharge.
Starting on December 21, 2025, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• 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: hqps://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-nodes-electronic-renortiniz-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
Page 5 of 7

Permit NCO021849
3. How to Request a Waiver from Electronic Reportine
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/edi-nr
4. Sienatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)]
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part I1,
Section B. (11.) (a) or by a duly authorized representative of that person as described in Part 11,
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. p,ov/about/div isions/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. "
Page 6 of 7

Permit NCO021849
5. Records Retention (Suaalements 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].
1 •:..
Page 7 of 7

NCO021849 — Hertford WWTP
Town of Hertford
Latitude: 36° 11' 51" Longitude: 76° 28' 8"
Stream Class: SC Sub -basin: 03-01-52
Receiving Stream: Perquimans River
Facility
Location
Perquimans County
✓{ Map not to scale