NC0028746_Draft Permit_20220726

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ROY COOPER - -
Governor
ELIZABETH S.BISER ,
-
Secretary '
RICHARD E.ROGERS.JR. NORTH CAROLINA
Director Environmental Quality
July 26,2022
Amanda Berger
Aqua North Carolina,Inc.
202 Mackenan Court
Cary,NC 27511
Subject: Draft NPDES Permit NC0028746
Briarwood Subdivision WWTP
Grade II Biological WPCS
Stokes County
Dear Ms. Berger:
Attached with this letter is a copy of the Draft NPDES permit renewal for your facility. Please review
this draft carefully to ensure thorough understanding of the requirements and conditions it contains. We
understand from your renewal application that there have been no treatment system changes. There are a
few changes in the draft attached here from the existing permit. These changes are summarized below.
• Regulatory Citations-Language has been added where necessary in the permit to provide regulatory
citations for permit requirements.
• Electronic Reporting-Permit language has been modified to be consistent with the finalization of
federal requirements for electronic reporting.
• Treatment System Components—The description of treatment components in the permit has been
updated to reflect the addition of a bar screen to the treatment system. We would also note that
according to our records,this device was added without an Authorization To Construct(ATC)from
our Division. The Winston-Salem Regional Office has previously alerted you to this issue in a 2019
NOV. The Division's ATC staff will be contacting Aqua staff and the ORC to attempt to address this
issue.
• Ammonia(NH3-N)Limits-In July 2016 the NPDES program began implementation of revised
ammonia criteria based on the potential for toxic impacts from ammonia. Previously,some 100%
domestic discharges were allowed to choose an effluent toxicity test instead of an ammonia limit.
Based on input from EPA in program and permit reviews, that option is no longer available. As these
permits are received for renewal(or major modification),NH3-N limits are being included in the
permit in accordance with the revised criteria. Appropriate limits have been added in your draft
permit. The effluent toxicity test previously in your permit is proposed for removal,as it was only
there in lieu of an NH3-N limit.
f D_�Q.�- North Carolina Department of Environmental Quality I Division of Water Resources
/lt/+ 512 North Salisbury Street . 1b17 Mail Service Center Raleigh,North Carolina 27699 1617
919 7079000
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Amanda Berger
Aqua North Carolina, Inc.
Page 2
NH3-N limits in the draft permit have been set as follows:
Monthly Avg Daily Max Frequency Type Location
NH3-N-Summer 2 mg/L 10 mg/L Weekly Composite Effluent
NH3-N-Winter 4 mg/L. 20 mg/L Weekly Composite Effluent
Review of your most recent effluent data indicates that these limits are attainable with your current
treatment system.
• Updates to Footnotes on Effluent Table Language in the footnotes has been updated to be consistent
with our current descriptions.
• Chronic Toxicity Special Condition—With the removal of the Chronic Toxicity requirement this
special condition has been removed.
• Map Update—Descriptive information on the permit map has been updated. This includes updating
the outfall location in accordance with the lat/long coordinates given on the application. Please verify
that this location is correct.
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.The latest
version of the standard conditions 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 general
circulation in the Stokes County area soliciting public comments on this draft permit.
Please provide any written comments you may have to me 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 by email at [e-mail]. At this time.contact by email is the most
effective method. If we need to set up a call to discuss any issues,we can set that up through email.
Sincerely,
Bradley Bennett
Compliance and Expedited Permitting Unit
cc: NPDES Files-electronic
Winston-Salem Regional Office/Water Quality—electronic
Operator Certification Program/Maureen Kinney electronic
Aquatic Toxicology Branch/Zach Thomas-electronic
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Draft Permit NC0028746
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
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,
Aqua North Carolina, Inc.
is hereby authorized to discharge wastewater from a facility located at the
I3riarwood Subdivision WWTP
Weatherford Drive
King, NC
Stokes County
to receiving waters designated as an unnamed tributary to Brushy Fork Creek in subbasin 03-02-01 of
the Roanoke 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 February 28,2027.
If the permittee intends to continue discharging at the facility beyond the term of this permit, a renewal
application must be submitted no later than September I,2026(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
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Draft Permit NC0028746
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.
Aqua North Carolina, Inc.
is hereby authorized to:
1. Continue to operate an existing 0.050 MGD wastewater treatment system that includes the following
components:
• Bar Screen
• Influent sedimentation chamber
• Aeration basin
• Clarification basin
• Tablet chlorination
• Contact chambers
• Dechlorinator
The facility is located at Briarwood Subdivision(End of Weatherford Drive)northeast of King NC,
in Stokes County.
2. Discharge from said treatment works via Outfall 001,at the location specified on the attached map
into an unnamed tributary to Brushy Fork Creek[stream ID:22-25-1] currently classified C waters
in subbasin 03-02-01 [HUC: 030101030201] of the Roanoke River Basin.
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Draft Permit NC0028746
PART I
A.(1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
Grade II Biological Water Pollution Control System[15A NCAC 08G.0302]
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 moni.toredl by
the Permittee as specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Sample
eDMR Code Average Maximum Frequency Type Location
Flow 50050 0.050 MGD Continuous RecordingInfluent or
Effluent
BOD, 5-day, (20°C) C0310 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
NH3 as N—Summer* C0610 2 mg/L 10 mg/L Weekly Composite Effluent
NH3 as N—Winter* C0610 4 mg/L 20 mg/L Weekly Composite Effluent
Dissolved Oxygen 00300 Daily average>6.0 mg/L Weekly Grab Effluent
Fecal Coliform 31616 200/100 ml 400/100 ml Weekly Grab Effluent
(geometric mean)
Total Residual Chlorine 2 50060 28 pg/L 2/Week Grab Effluent
Temperature(°C) 00010 Monitor&Report Daily Grab Effluent
Total Nitrogen C0600 Monitor&Report Quarterly Composite Effluent
Total Phosphorus C0665 Monitor&Report Quarterly Composite Effluent
>6.0 and<9.0
pH 00400 standard units 2/Month Grab Effluent
Dissolved Oxygen 00300 Monitor&Report Weekly Grab Upstream&
Downstream
Temperature(°C) 00010 Monitor&Report Weekly Grab Upstream&
Downstream
•Surmner: April 1" —October 31" *Winter: November 1"—March 31"
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system[see A.(2)].
2. The Division shall consider all effluent TRC values reported below 50 µg/1 to be compliant 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}tg/l.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN
TRACE AMOUNTS.
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Draft Permit NC0028746
A.(2) 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.)(all
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://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 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.
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Aqua North Carolina, Inc. Facility
Briarwood Subdi%isiotl WW CI' Location
County: Stokes Stream Class: C (not to scale)
Receiving Stream: UT Brushy Fork Cr Sub-Basin: 03-02-01
Latitude: 36'19'08' Grid.Quad: King
Longitude: 80°19'26- HUC: 030101030201 North NPDIi S Permit: 1VC'0028'46
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