NC0083089_Draft Permit_20240415

M STATE oF�
o o
ROY COOPER
n
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
NORTH CAROLINA
Director
Environmental Quality
April 16, 2024
Seola Hill
Bogue Banks Water Corporation
1001 Park St.
Williamston, NC 27892
Subject: Draft of NPDES Permit NCO083089
Bogue Banks Water Corporation WTP
Carteret County
Grade I Physical Chemical WPCS
Dear Mr. Hill:
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure a
thorough understanding of the information, conditions, and requirements it contains.
This draft contains the following major changes from the existing permit:
• Section A. (5.) has been updated regarding electronic submission of effluent data. Federal regulations
require electronic submittal of all discharge monitoring reports (DMRs).
• Chronic Toxicity language in section A. (2.) has been updated.
• The maximum monthly average discharge has been updated in the Supplement to Permit Cover Sheet.
• The facility grade has been added to Section A. (1).
• The chemical usage at the facility has been added to the Supplement to Permit Cover Sheet.
• A zinc limit has been added to section A. (L) and monitoring frequency has been increased to monthly. A
compliance schedule has been added (Section A. (4.))
• The compliance schedule for Total Copper has been removed.
• The eDMR parameter code for Cyanide has been updated in Section A. (1).
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.
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Carteret County area, per EPA requirements. Please provide your
comments, if any, to me no later than 30 days after receiving 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 the draft, please contact me via
e-mail at [e-mail] or via phone at 919-707-3600.
Sincerely,
Ncatli oltnaUepca�enCv�En�tionmen�l ualit}j DtvmionofW-at rRrao7vvBE
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512 Ncr t Satisbwy Street 1161 M,-A1 Service Center 1 Rateiglt. Nodth Qrotina 2?699-1617
k...4� 919_7.07-90M

Sara Bassett
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES files [Laserfiche]
Wilmington Regional Office [Laserfiche]
Operator Certification Program [Laserfiche]
Aquatic Toxicology Branch [Laserfiche]
Division of Marine Fisheries/Shellfish Sanitation

NPDES Permit NCO083089
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 provision 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
Bogue Banks Water Corporation
is hereby authorized to discharge wastewater from a facility located at the
Bogue Banks WTP
9204 Coast Guard Road
Emerald Isle
Carteret County
to receiving waters designated as Bogue Sound in the White Oak River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II and III hereof.
This permit shall become effective
This permit and authorization to discharge shall expire at midnight on May 31, 2029.
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 December 2, 2028 (180 days before the expiration of this
permit).
Signed this day
John E. Hennessy, Section Chief Regional Operations
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

NPDES Permit NCO083089
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.
Bogue Banks Water Corporation
is hereby authorized to:
1. Continue to operate a Reverse Osmosis drinking -water treatment plant with a discharge of
wastewaters through a modeled subsurface multi -port diffuser from reverse osmosis units. This
water treatment plant currently has a design potable flowrate of 1.5 MGD and a maximum, monthly
average wastewater discharge of 0.460 MGD. This facility is located in Bogue Banks on Coast
Guard Road at the Bogue Banks WTP in Carteret County. Wastewater treatment includes the
following components:
• Scale inhibitors
• Reverse osmosis filters
• Two (2) H2S degasifier silos
• Multi -port diffuser
Chemical usage consists of.
• Hydrogen Sulfide
• Chlorine
• Orthophosphate
• Calcium Chloride
• Sodium Hydroxide
2. Discharge from said treatment works at the location specified on the attached map Outfall 001into
Bogue Sound [Stream Segment: 20-36-(0.5)], currently classified SA; ORW waters in subbasin 03-
05-03 [HUC: 0302030103] in the White Oak River Basin.
Page 2 of 9

NPDES Permit NCO083089
Part I.
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade I Physical Chemical WPCS [15A NCAC 08G .0306]
During the period starting with the effective date of this permit and lasting until expiration, the Permittee
is authorized to discharge Reverse Osmosis wastewater through an approved multi -port diffuser from
outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
Parameter Codes
LIMITS
MONITORING
REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Fre uenc
Sample
T e
Sample
Location z
Flow (MGD) 50050
Monitor & Report
Continuous
Recording
Effluent
Dissolved Oxygen (DO) 00300
m /L
Monitor & Report
Monthly
Grab
Effluent, S1, S2
Salinity (ppth) 00480
Monitor & Report
Monthly
Grab
Effluent, S1, S2
Conductivity (µmhos/cm) 00094
Monitor & Report
Monthly
Grab
Effluent, S1, S2
pH (s.u.) 00400
6.8 s.u. < pH < 8.5 s.u.
2/Month
Grab
Effluent
pH (s.u.) 00400
Monitor & Report
Monthly
Grab
S1, S2
Total Residual Chlorine 3 50060
L
13 µg/L
2/Month
Grab
Effluent
Total Dissolved Solids 70295
m /L
Monitor & Report
Monthly
Grab
Effluent
Turbidity (NTU) 00070
Monitor & Report
Monthly
Grab
Effluent
Total Copper (µg/L) 01042
9.25 µg/L
1 12.61 µg/L
Monthly
Grab
Effluent
Total Chloride (mg/L) 00940
Monitor & Report
Monthly
Grab
Effluent
Cyanide (µg/L) 00720
Monitor & Report
Monthly
Grab
Effluent
Total Zinc 01092
214.1 µg/L 4
206.8 µg/L 4
Monthly
Grab
Effluent
Ammonia Nitrogen (mg/L) C0610
Monitor & Report
Monthly
Grab
Effluent
Total Nitrogen (TN) (mg/L) C0600
Monitor & Report
Quarterly
Grab
Effluent
Total Phosphorus (TP) C0665
m /L
Monitor & Report
Quarterly
Grab
Effluent
Whole Effluent Toxicity 5 TGP3E
Monitor & Report
Quarterly
Grab
Effluent
Footnotes:
1. The permittee shall begin submitting discharge monitoring reports electronically using the NC DWR's
eDMR application system [see A. (5)].
2. The locations of S1, S2 are defined in Special Condition A. (3.) INSTREAM SAMPLE LOCATIONS.
3. Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually
discharged. The Division shall consider all effluent TRC values reported below 50 µg/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 µg/L.
4. See compliance schedule in Special Condition A. (4).
Page 3 of 9

NPDES Permit NCO083089
5. Chronic toxicity 7-day Pass/Fail parameter code TGP3E Mysid Shrimp at 20%; February, May,
August and November; refer to Special Condition A. (2.) CHRONIC TOXICITY MONITORING
(QUARTERLY).
All samples collected should be from a representative discharge event.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN
TRACE AMOUNTS.
A. (2.) CHRONIC TOXICITY PASS/FAIL PERMIT MONITORING (QUARTERLY)
[15A NCAC 02B .0200] [15A NCAC 02B .0500 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Mysidopsis Bahia at an effluent concentration of 20 %.
The permit holder shall perform at a minimum, quarterly monitoring using procedures described below
to establish compliance with the permit condition. 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. The test procedure will be based on EPA Method 1007.0,
Mysid, Mysidopsis Bahia, Survival, Growth, and Fecundity Test, as described in Short -Term Methods
for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine
Organisms, Third Edition, EPA-82 I -R-02-014. The procedure will be performed as written with the
following exceptions:
• The test treatments will consist of a control and a 20% effluent concentration.
• Mortality for pass/fail tests will be evaluated using the t test described in Section 11.3 in
Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine
Organisms, Fifth Edition. EPA821-R-02-012, October 2002, applying an alpha level
of 0.05.
• The growth endpoint for pass/fail tests will be determined using Appendix G of Short -
Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to
Marine and Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002,
applying an alpha level of 0.01.
• Mortality and growth endpoints for multiple -concentration tests will be determined using
hypothesis testing as described in EPA Method 1007.0, Mysid, Mysidopsis Bahia,
Survival, Growth, and Fecundity Test, as described in Short -Term Methods for
Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and
Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002.
• Fecundity will not be evaluated.
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. For pass/fail results,
report using the parameter code TGP3E and the DWR Form AT-4 (original), which is to be sent to the
address below.
Page 4 of 9

NPDES Permit NCO083089
Attention: 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.ATBkdeq.nc.gov.
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. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above. Should any test data from this
monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate
potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate
monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
A. (3.) SAMPLE LOCATIONS
[15A NCAC 02B .0500 et seq.]
The Permittee shall collection grab samples at the designated locations and frequency during a continuous
discharge event after a minimum of 1 hour of continuous discharge has occurred. Every effort to replicate
the same sample location is requested. To provide a point of comparison the required effluent grab sample
should be collected at the same time.
Page 5 of 9

NPDES Permit NCO083089
BOGUE SOUND
16 feet 16 feet
--------- 8-1-- X---------------------------- ------------------------ X-8-2-----
900
Diffuser Pipe End
NO SCALE
"X" Marks the sample location
DISCHARGE
LINE
Location Description:
S 1 — 16 feet in a south westerly direction from the diffuser pipe end
S2 — 16 feet in a north easterly direction from the diffuser pipe end
A. (4.) SCHEDULE OF COMPLIANCE (OUTFALL 001)
[G. S. 143-215.1(b)]
1. Within one year from the effective date of the permit the Permittee shall submit to the Division of
Water Resources a Corrective Action Plan summarizing the actions or strategy to be taken to achieve
compliance with the Total Zinc limits at Outfall 001. Specific dates for completion or implementation
of each action shall be included.
2. Within two years from the effective date of the permit submit a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
3. Within three years from the effective date of the permit submit a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
4. Within four years from the effective date of the permit submit a report to the Division summarizing
actions taken in accordance with the Corrective Action Plan.
5. Achieve compliance with Total Zinc limits specified in Section A. (1) within five years of the permit
effective date.
Upon approval of the Corrective Action Plan by the Division, the report and actions become an
enforceable part of this permit. 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 Corrective Action Plan and reports shall include the owner's name, NPDES permit number and
Permittee contact person, and shall be submitted to:
Page 6 of 9

NPDES Permit NCO083089
(1) NCDEQ / Division of Water Resources (2) NCDEQ / Division of Water Resources
NPDES Compliance and Expedited Permitting Washington Regional Office
1617 Mail Service Center 943 Washington Square Mall
Raleigh, NC 27699-1617 Washington, NC 27889
A. (5.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December
21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)I
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: https:Hdeq.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
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
Page 7 of 9

NPDES Permit NC0083089
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: hgps://www.federalre_ig ster.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 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.
Page 8 of 9

NPDES Permit NC0083089
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
hqp:Hdeq.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:
hgp:Hdeq.nc.gov/about/divisions/water-resources/edmr '
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)]
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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NPDES Permit NCO083089
Facility Location
Receiving Stream: Bogue Sound Stream Class: SA; ORW scale not shown
Stream Segment: 20-36-(0.5) Sub -Basin #: 03-05-03
River Basin: White Oak HUC: 0302030103 SCALE 34.668190,-77.063180
County: Carteret 1:24,000 USGS Quad: Swansboro