NC0072699_Draft Permit_20171101

Water Resources
ENVIRONMENTAL QUALITY
November 1, 2017
The Honorable Richard L. Stanley, Mayor
Town of Beaufort
PO Box 390
Beaufort, NC 28516-0390
Dear Mr. Stanley:
ROY COOPER
Govenlor
MICHAEL S REGAN
Secretary
S JAY ZIMMERMAN
Du ec[or
Subject: Draft NPDES Permit NCO072699
Pine Street WTP
Class PC -1
Carteret County
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:
➢ Section A. (3) has been added to require electronic submission of effluent data, and a
footnote has been added in Section A. (1). Federal regulations require electronic
submittal of all discharge monitoring reports (DMRs).
➢ Regulatory citations have been added to the permit.
➢ Parameter codes have been added to Section A. (1).
➢ The month of permit expiration has been changed to allow a full 5 -year permit cycle.
➢ The facility address has been updated on the cover sheet per the permit renewal
application.
➢ Components list has been updated on the Supplement to Permit Cover Sheet per the
permit renewal application.
➢ Outfall map has been updated.
➢ Language has been updated on the Supplement to Permit Cover Sheet based on current
NPDES permit formatting.
➢ A footnote in Section A. (1) concerning logbooks has been added for flow monitoring.
➢ Flow monitoring in Section A. (1) has been reduced to 2/month and the sample type has
been changed to instantaneous per the current water treatment plant strategy.
➢ The total residual chlorine has been changed to both a daily maximum and monthly
average in Section A. (1).
➢ Limits have been added for Total Copper, Total Lead, and Total Zinc based on a
reasonable potential to exceed water quality standards and monitoring has been changed
to monthly.
➢ The sampling type for all parameters, other than flow, has been changed from grab to
composite in Section A. (1), and an associated footnote has been added.
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
https•//deq nc gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

➢ The footnote for aquatic toxicity monitoring has been updated in Section A. (1).
Monitoring for toxicity in conjunction with metals and total residual chlorine is no longer
required.
➢ Language in Section A. (2) has been updated.
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 at 919-807-6333, or via e-mail [[e-mail]].
Sincerely,
Brianna Young
Compliance and Exp dited Permitting Unit
cc: NPDES Files
ec: Wilmington Regional Office
Donovan H. Willis, Public Utilities Director, Town of Beaufort [[e-mail]]
Frank Sansone, Jr., ORC, Town of Beaufort [[e-mail]]
WSS/Aquatic Toxicity Branch

Permit NCO072699
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
I' : ►�i 111
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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
Town of Beaufort
is hereby authorized to discharge wastewater from a facility located at the
Pine Street WTP
910 Pine Street
Beaufort
Carteret County
to receiving waters designated as an unnamed tributary to Town Creek in the White Oak River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
11, III and IV hereof.
This permit shall become effective.
This permit and authorization to discharge shall expire at midnight on January 31, 2023.
Signed this day.
S. Jay Zimmerman, P.G.
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NCO072699
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 Beaufort is hereby authorized to:
Continue to operate a drinking -water treatment plant with a discharge of water softener -backwash
wastewater from Ion Exchange units. This water treatment plant currently has a design potable
flowrate of 0.60 MGD and a maximum, monthly average wastewater discharge of 0.0156 MGD.
This facility is located in Beaufort off Pine Street at the Pine Street WTP in Carteret County. Water
and wastewater treatment consists of:
• 4 softener units
• Chlorination (gas)
• Hydrofluosilicic acid
• Dechlorination by sodium bisulfite
2. Discharge from said treatment works at the location specified on the attached map into an unnamed
tributary to Town Creek [Stream Segment: 21-33], a waterbody currently classified SC waters within
subbasin 03-05-03 [HUC: 0302030104] of the White Oak River Basin.
Page 2 of 8

Permit NCO072699
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 this permit and lasting until expiration, the
Permittee is authorized to discharge filter backwash and softener regeneration backwash from outfall
001. Such discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
[Parameter codes]
LIMITS
Monthly Daily
Average Maximum
MONITORING REQUIREMENTS
Measurement Sample Type Sample Location
Frequency
FIoW z
50050
2/month
Instantaneous
Effluent
Salim
00480
Monthly
Composite 5
Effluent
Conductivity
00094
Monthly
Com,osite 5
Effluent
H
00400
Not < 6 8 s u nor > 8 5 s.u.
2/ Month
Com osite 5
Effluent
Total Dissolved Solids
[702957
Monthly
Composite 5
Effluent
Total Suspended Solids
[CC5301
30 0 m /L 1 45.0 m /L
2/ Month
Composite 5
Effluent
Total Residual Chlorines
50060
13 u /L
2/ Month
Composite 5
Effluent
Turbidity
00070
Monthly
Composite 5
Effluent
Total Copper
[010421
3 70 /L 5 80 /L I
Monthly
Composite 5
Effluent
Total Lead
01051
8 50 /L 220 80 /L
Monthly
Composite 5
Effluent
Total Zinc
01092
85 6 /L 95.1 /L
Monthly
Composite 5
Effluent
Ammonia Nitrogen
[CC6101
Monthly
Composite 5
Effluent
Whole Effluent Toxicity a
GE3E
Monitor & Report
Quarterly I
Composite 5
Effluent
Footnotes:
1 The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR
application system [see A (3)]
2. Duration of discharge should be noted in log books and a Total daily discharge reported in the DMR
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 gg/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 gg/L.
4 Acute Toxicity 24-hour Pass/ Fail Monitoring. March, June, September and December. Permittee shall
use mysid shrimp as the test organism unless another organism of equal or greater sensitivity is deemed
more appropriate based on the characteristics of the discharge and receiving stream See Special
Condition A. (2 ) for details.
5. Samples of equal volume should be collected every 15 minutes during the entire recharge cycle. A
composite sampler must be installed within 2 months of the date of permit issuance, or another method
must be approved by the Wilmington Regional Office Water Quality Regional Operations Section in
accordance with 15A NCAC 02B 0503 (4).
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.
Page 3 of 8

Permit NCO072699
A. (2.) ACUTE TOXICITY PASS/FAIL MONITORING ONLY (QUARTERLY)
[15A NCAC 02B .0500 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 Mysid Shrimp (Mysidopsis bahia) 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 March, June, September, and
December. 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.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR -1) for the month in which it was performed, using the parameter code
TGE3E. 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
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. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above
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
Page 4 of 8

Permit NCO072699
require immediate follow-up testing to be completed no later than the last day of the month following
the month of the initial monitoring.
USE OF A DIFFERENT TEST ORGANISM
The permittee may request the use of a different test organism upon documentation that the alternate test
organism would provide an equal or greater level of protection and is appropriate based on the
characteristics of the discharge and receiving stream. Such documentation would consist of one of the
following:
1. For saltwater classified streams, a fathead minnow may be assigned as the acute testing species
if the salinity of the receiving stream at the point of discharge is < 5 ppt throughout the tidally
influenced cycle. This determination may be based on the best professional judgment of DWQ
staff or data collection provided by the permittee and approved by DWQ staff. This evaluation
should include vertical profiles of salinity/ conductivity measurements at both high tide and low
tide over several 24 hr. cycles.
2. Three consecutive "side-by-side" tests with results indicating that the alternate test organism is
as or more sensitive to the facility's effluent. Each test series would consist of two separate
toxicity tests conducted on the same sample of effluent with the length of exposure specified by
the permit, the only difference between the tests being the test organism.
3. An alternate plan developed by the permittee and approved by the Aquatic Toxicology Unit that
demonstrates an equal level of protection is offered by the test organism.
For items 2 and 3, it must also be demonstrated that viable and standardized culture techniques are
available for that organism and standardized testing methodologies have been developed and validated.
This demonstration should meet guidance provided by EPA in Section 6 of EPA -821-R-02-012, Short
Term Methods for Estimating the Acute Toxicity of Effluents and Receiving Waters to Freshwater
Organisms, Fifth Edition, 2002. Requests to use a different test organism and supporting documentation
should be sent to NC DWQ, ESS at the address listed above.
A. (3.) 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.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
Page 5 of 8

Permit NC0072699
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. 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 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
Page 6 of 8

Permit NCO072699
Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-
pollutant-discharge-elimination-system-n des -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.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://dcq.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. (I 1.)(a) or by a duly authorized representative of that person as described in Part II, Section
B. (I 1.)(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:
htt-p://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 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 7 of 8

Permit NCO072699
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 8of8

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Pine Street WTP
NPDES Permit NCO072699
Receiving Stream: UT to Town Creek Stream Class: SC
Stream Segment: 21-33 Sub -Basin #: 03-05-03
River Basin: White Oak HUC: 0302030104
County: Carteret
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SCALE
1:24,00034.717780, -76.656110
Quad:Facility Location
scale not shown
USGS