NC0031828_Draft Permit_20180627

ROY COOPER
Governor
MICHAEL S. REGAN
Secremry
LINDA CULPEPPER
Water Resources Interim Director
ENVIRONMENTAL DUALITY
June 27, 2018
Mr. Chad Braxton
City of Vanceboro
PO Box 306
Vanceboro,NC 28586-0306
Subject: Draft NPDES Permit NC0031828
Vanceboro WWTP
Class WW-2
Craven County
Dear Mr. Braxton:
The Division has reviewed your request to renew the subject permit. Please review this draft carefully
to ensure your thorough understanding of the information, conditions, and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
1. Language has been added in Section A. (1) and as Section A. (6)to require electronic submission
of effluent data. Federal regulations require electronic submittal of all discharge monitoring
reports(DMRs).
2. Regulatory citations have been added to the permit.
3. Outfall map has been updated.
4. The facility address has been updated on the cover sheet and the Supplement to Permit Cover
Sheet per the renewal application.
5. The receiving stream characteristics have been updated on the Supplement to Permit Cover
Sheet.
6. Former footnote#4 concerning total residual chlorine as back-up disinfection has been removed
as the renewal application indicated that chlorine gas disinfection is used.
7. The conditions below the effluent table in Section A. (1)have been updated.
8. Section A. (2)has been updated.
9. Former Section A. (5) concerning total residual chlorine as back-up disinfection has been
removed as the renewal application indicated that chlorine gas disinfection is used, and UV
disinfection is not used.
With this notification, the Division will solicit public comment on this draft permit by publishing a
notice in newspapers having circulation in the general Craven County area, per EPA requirements.
Please provide your comments,if any, to me no later than 30 days after receiving this draft
permit.
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,NC 27699-1617
919 807 6300 919-807-6389 FAX
haps://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

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 the draft,please
contact me at 919-807-6333, or via e-mail [[e-mail]].
Sincerely,
\-)o-vvo„,..--..„,_ )2_6
Brianna Young
Compliance and Expedited Permitting Unit
cc: NPDES Files
Washington Regional Office
Wastewater Operator Certification Group
WSS/Aquatic Toxicology Branch

Permit NC0031828
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,
Town of Vanceboro
is hereby authorized to discharge wastewater from a facility located at the
Vanceboro WWTP
7749 US Highway 17 (South Main Street)
Vanceboro
Craven County
to receiving waters designated as Swift Creek in the Neuse 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 April 30, 2023.
Signed this day.
Linda Culpepper
Interim Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

Permit NC0031828
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 Vanceboro
is hereby authorized to:
1. Continue to operate an existing 0.30 MGD wastewater treatment system that includes the following
components:
> Manual bar screen
> Grit removal
> Two (2)parallel mechanically operated aerated oxidation ditches
> Three(3)parallel secondary clarifiers
> Tertiary sand filters
> Alum feed for phosphorus removal
> Polymer feed for alum sludge conditioning
> Gas chlorination
> Chlorine contact chamber
> Dechlorination
> Cascade post aeration
> Automatic samplers
> Flow meter
> Aerobic sludge digesters
> Sludge drying beds
> Standby power
The facility is located at the Vanceboro WWTP located at 7749 US Highway 17 (South Main Street)
in Vanceboro in Craven County.
2. Discharge from said treatment works at the location specified on the attached map into Swift Creek
[Stream Segment: 27-97-(0.5)], a waterbody currently classified C; Swamp, NSW [HUC:
0302020205] in sub-basin 03-04-09 in the Neuse River Basin.
Page 2 of 9

Permit NC0031828
PART I
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 the permit and lasting until expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored'
by the Permittee as specified below:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Measurement Sample Sample Location 2
Average Average Frequency Type
Flow 50050 0.30 MGD Continuous Recording Influent or Effluent
Total Monthly Flow Monitor&Report Monthly Calculated Influent or Effluent
Total Residual Chlorine 3 50060 28 pg/L(Daily Maximum) 2/Week Grab Effluent
Temperature(°C) 00010 Daily Grab Effluent
Temperature(°C) 00010 Weekly Grab Upstream&
Downstream
pH 00400 Not<6.0 nor>9.0 Weekly Grab Effluent
Standard Units
Dissolved Oxygen 00300 Daily Average>5.0 mg/L Weekly Grab _ Effluent
Dissolved Oxygen (mg/L) 00300 Weekly Grab Upstream &
Downstream
BOD, 5-day(20°C)4 C0310 5.0 mg/L 7.5 mg/L Weekly Composite Influent&Effluent
(April 1 —October 31)
BOD, 5-day(20°C)4 C0310 10.0 mg/L 15.0 mg/L Weekly Composite Influent&Effluent
(November 1 —March 31)
Total Suspended Solids 4 C0530 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent
NH3 as N C0610 2.0 mg/L 6.0 mg/L Weekly Composite Effluent
(April 1 —October 31)
NH3 as N C0610 4.0 mg/L 12.0 mg/L Weekly Composite Effluent
(November 1 —March 31)
Fecal Coliform 31616 200/100 ml 400/100 ml Weekly Grab Effluent
(geometric mean)
TKN (mg/L) 00625 Monitor&Report 2/Month Composite Effluent
NO2-N +NO3-N (mg/L) 00630 Monitor&Report 2/Month Composite Effluent
TN (mg/L)5 C0600 Monitor&Report 2/Month Composite Effluent
TN Load 6 QM600 Monitor& Report(lb/mo) Monthly Calculated Effluent
TN Load 6 QY600 Monitor&Report(Ib/yr) Annually Calculated Effluent
Total Phosphorus' C0665 1.0 mg/L I Monthly Composite Effluent
Total Mercury 8 71900 Monitor&Report See Footnote 8 Composite Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR
application system [see Section A. (6)].
2. Upstream=at NCSR 1440. Downstream=approximately 2 miles downstream from the outfall.
Page 3 of 9

Permit NC0031828
3. 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 lig/L.
4. The monthly average effluent BODS and TSS concentrations shall not exceed 15%of the respective influent
value(85%removal).
5. For a given wastewater sample,TN=TKN+NO2-N+NO3-N,where TN is Total Nitrogen and TKN is Total
Kjeldahl Nitrogen.
6. TN Load is the mass load of Total Nitrogen discharged in a given period of time. See Section A. (2)
Calculation of Total Nitrogen Loads.
7. The monthly average for total phosphorus shall be the average of composite samples collected monthly.
8. Mercury must be monitored once during the permit cycle. See Section A.(5)Effluent Mercury Analysis.
ALL SAMPLES SHALL BE FROM A REPRESENATIVE DISCHARGE EVENT.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN
TRACE AMOUNTS.
1
Page 4 of 9

Permit NC0031828
A. (2) CALCULATION OF TOTAL NITROGEN LOADS
[G.S. 143-215.1(b)]
The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (pounds/month) =TN x TMF x 8.34
Where:
TN = average Total Nitrogen concentration(mg/L) of the composite samples
collected during the month
TMF = Total Monthly Flow of wastewater discharged during the month
(MG/month)
8.34 = conversion factor, from (mg/L x MG)to pounds
ii. Annual TN Load (pounds/year) = Sum of the twelve Monthly TN Loads for the calendar
year
The Permittee shall report monthly Total Nitrogen results (mg/L and pounds/month) in the discharge
monitoring report for each month and shall report each year's results (pounds/year) with the December
report for that year.
A. (3) ANNUAL LIMITS FOR TOTAL NITROGEN
[G.S. 143-215.1(b)]
a. Total Nitrogen(TN) allocations and TN Load limits for NPDES dischargers in the Neuse
River basin are annual limits and are applied for the calendar year.
b. For any given calendar year, the Permittee shall be in compliance with the annual TN Load
limit in this Permit if:
i. the Permittee's annual TN Load is less than or equal to said limit, or
ii. the Permittee is a Co-Permittee Member of a compliance association.
c. If the Permittee is not a co-permittee member of a compliance association and the Permittee's
cumulative annual TN discharge exceeds the effective TN Load limit in this permit at any
point during the calendar year, the Permittee is in violation of its TN Load limit, and each
day of a continuing violation shall constitute a separate violation.
d. The TN Load limit in this Permit(if any) may be modified as the result of allowable changes
in the Permittee's TN allocation.
i. Allowable changes include those resulting from purchase of TN allocation from
the Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation
between the Permittee and other dischargers; regionalization; and other
transactions approved by the Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to
reflect allowable changes in itsTN allocation. Upon receipt of timely and proper
application, the Division will modify the permit as appropriate and in accordance
with state and federal program requirements.
Page 5 of 9

Permit NC0031828
iii. Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for
changes proposed for the following calendar year.
iv. Application shall be sent to:
NC DENR/DWR/NPDES Programs
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh,NC 27699-1617
e. If the Permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association's group NPDES permit and the TN
limits therein.
i. The Permittee shall be considered a Co-Permittee Member for any given calendar
year in which it is identified as such in Appendix A of the association's group
NPDES permit.
ii. Association roster(s) and members TN allocations will be updated annually and in
accordance with state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association, the Division
must be notified of the proposed action in accordance with the procedures defined
in the association's NPDES permit.
1. Upon receipt of timely and proper notification, the Division will modify
the permit as appropriate and in accordance with state and federal program
requirements.
2. Membership changes in a compliance association become effective on
January 1 of the year following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until
expiration of this Permit and are not affected by the Permittee's membership in a compliance
association.
A. (4) TOTAL NITROGEN ALLOCATIONS
[G.S. 143-215.1(b)]
The following table lists the Total Nitrogen(TN) allocation(s) assigned to, acquired by, or transferred to
the Permittee in accordance with the Neuse River nutrient management rule(Tl 5A NCAC 02B .0234)
and the status of each as of permit issuance. For compliance purposes, this table does not supersede any
TN limit(s) established elsewhere in this permit or in the NPDES permit of a compliance association of
which the Permittee is a Co-Permittee Member.
Page 6 of 9

Permit NC0031828
Allocation Source Date Allocation Amount' Status
Type _ Estuary(Ib/yr) Discharge(lb/yr)
Assigned by Rule 12/7/97;
Base (T15A NCAC 02B 4/1/03 6,066 6,066 Active
0234L
TOTAL 6,066 6,066 Active
Footnote:
1. Transport Factor= 100%
Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical
errors) or any change in status of any of the listed allocations shall be considered a major modification
of this permit and shall be subject to the public review process afforded such modifications under state
and federal rules.
A. (5) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.66]
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 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. (6) 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.
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
Page 7 of 9

Permit NC0031828
data and submit DMRs electronically using the internes. Until such time that the state's eDMR
application is compliant with EPA's Cross-Media Electronic Reporting Regulation(CROMERR),
permittees will be required to submit all discharge monitoring data to the state electronically using
eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one
signed original and a copy of the computer printed eDMR 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
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 mailing address above. 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, 2020, 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 i plement the NPDES program)that is the designated entity for
receiving electronic NPDES data [see 40 FR 127.2(b)].
I 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
Page 8 of 9

•
Permit NC0031828
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. Siznatory Requirements f 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/edinr
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 request of the Director at any time [40 CFR 122.41].
Page 9 of 9

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ReceivingStream:Swift Creek Stream Class: Sw, NSW
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Stream Segment:27-97-(0.5) Sub-Basin U:03-04-09
River Basin: Neuse HUC:0302020205 SCALE USGS Quad:Vanceboro
County:Craven 1:24,000 35.29500°,-77.15000°