NC0048861_Draft Permit_20231010

ROY COOPER ' t j1 17.Q.‘ s:
Governor
ELIZABETH S.BISER
Secretary
RICHARD E.ROGERS.JR. NORTH CAROLINA
Director Environmental Quality
October 10,2023
Mr. Edwin Blount
Town of Creswell
P.O. Box 68
Creswell,NC 27928
Subject: Draft of NPDES Permit NC0048861
Creswell WWTP
Washington County
Grade WW-2 Biological WPCS
Dear Mayor Blount:
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.
The final permit includes the following significant changes from the existing permit:
➢ Section A. (3)has been updated regarding electronic submission of effluent data. Federal regulations
require electronic submittal of all discharge monitoring reports (DMRs).
➢ Mercury monitoring has been reduced to once per permit cycle per the Division's"Mercury Post-TMDL
Permitting Strategy(September 12,2012)"as requested.
➢ Section A.(2)has been added per the Division's policy for ultraviolet disinfection systems.
➢ The facility components list has been updated to reflect the correction listed in the received application.
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Washington 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,
11 _
Sara Bassett
Environmental Specialist I
NPDES Compliance and Expedited Permitting
cc: NPDES files [Laserfiche]
Washington Regional Office [Laserfiche]
Operator Certification Program [Laserfiche]
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Permit NC0048861
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT 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,the
Town of Creswell
is hereby authorized to discharge wastewater from a facility located at the
Creswell WWTP
Cherry Road (NCSR 1155)
Creswell
Washington County
to receiving waters designated as the Scuppernong 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 November 30,2028.
Signed this day
Richard E. Rogers, Jr., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0048861
SUPPLEMENT TO PERMIT COVER SHEET
Permits issued to this facility,whether for operation or discharge are herebyrevoked,and as
All previous NPDES p g
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 described herein.
Town of Creswell is hereby authorized to:
1. Continue to operate an existing 0.20 MGD membrane bioreactor (MBR) wastewater treatment system that
includes the following components;
• one(1)flow equalization lagoon
• influent flow splitter box structure
• influent pump station with two(2) 350 gpm pumps
• influent flow meter
• three(3)350 gpm mechanical fine(2 mm)bar screens
• one(1)screenings compactor
• two(2)22,400 gallon anoxic tanks with two 2.3 hp submersible mixers
• two(2)42,300 gallon aerobic basins with fine bubble diffusers
• two(2)278 gpm NRCY recycle pumps and three(3)245 scfin aeration process blowers
• two(2) 34,800 gallon membrane bioreactor basins containing at total of 8 membrane units rated and three
(3)630 scfm MBR process(scour)blowers
• two(2) 195 gpm permeate pumps with two(2)flow meters
• two(2)208 gpm RAS pumps with two(2)flow meters
• one(1) 150 gpm WAS pump with flow meter
• a sodium hydroxide storage and feed system
• an alum storage and feed system
• two(2)bank UV disinfection system, each rated for 0.50 MGD peak flow
• cascade aeration
• effluent pump station consisting of two(2)350 gpm pumps with effluent flow meter
• two(2)65,000 gallon(each)aerobic digesters with coarse bubble diffusers and two(2)285 scfm blowers
• one(1)500 gpm sludge transfer pump
• a sludge loading station
• a 450 kW emergency generator
• an administration and control building
• associated yard piping,electrical work and control systems
This facility located at the Creswell WWTP off Cherry Road(NCSR 1155) south of Creswell in Washington
County.
2. Discharge treated wastewater from said treatment works via Outfall 001 at a location specified on the attached
map, into the Scuppernong River [Stream Segment 30-14-4-(1)], currently a classified C-Swamp waterbody
within Subbasin 03-01-53 of the Pasquotank River Basin.
Page 2 of 8

Permit NC0048861
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade WW-2 Biological Water Pollution Control System [15A NCAC 08G.0302]
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:
LIMITS MONITORING REQUIREMENTS I
EFFLUENT CHARACTERISTIC
[Parameter Codes] Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location 2
Flow 0.20 MGD Continuous Recording I or E
[50050]
BOD 5-day,20°C-Summer*3 5.0 mg/L 7.5 mg/L Weekly Composite 1,E
[00310]
BOD 5-day,20°C-Winter*3 10.0 mg/L 15.0 mg/L Weekly Composite I,E
[00310]
Total Suspended Solids 3 30.0 mg/L 45.0 mg/L Weekly Composite 1,E
[00530]
NH3 as N-Summer*
[C0610] 2.0 mg/L 6.0 mg/L Weekly Composite E
NH3 as N-Winter* 4.0 mg/L 12.0 mg/L Weekly Composite E
[C0610]
Fecal Coliform4 200/100 mL 400/100 mL Weekly Grab E
[31616]
pH(su) >6.0 and<9.0 standard units Weekly Grab E
[00400]
Dissolved Oxygen(mg/L) Daily average not less than 5.0 mg/L Weekly Grab E
[00300]
Temperature(°C) Weekly Grab E
[00010]
TKN(mg/L)5
[00625]
Monitor&Report Quarterly Composite E
NO3-N+NO2-N(mg/L)5 Monitor&Report Quarterly Composite E
[00630] Monitor&Report Quarterly Calculated E
TN(mg/L)5
[00600]
Total Phosphorus(mg/L)
[C0665] Monitor&Report Quarterly Composite E
Mercury(mg/L)6 Monitor&Report Once per permit Grab E
[COMER] cycle
pH(su) Weekly Grab U,D
[00400]
Dissolved Oxygen(mg/L) Weekly Grab U,D
[00300]
Temperature(°C) Weekly Grab U,D
[00010]
*Summer: April 1 —October 31 *Winter: November 1 —March 31
Page 3 of 8

Permit NC0048861
Notes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR
system [see A. (3)].
2. Sample Location: E—Effluent, I—Influent, U—Upstream 200 feet from outfall 001, D—
Downstream at Spruills Bridge (NCSR 1178). Samples taken at mid-stream.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15
percent of the respective influent value (85%removal).
4. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in
Part II. Section A.
5. For a given wastewater sample, TN=TKN+NO3-N+NO2-N, where TN is Total Nitrogen, TKN
is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
usingEPA Method 1631E for all effluent mercurysampling is required.
6. Low level mercury analysis p g q
Samples shall be taken at the outfall but prior to mixing with the receiving waters.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM OTHER THAN
TRACE AMOUNTS.
Page 4 of 8

Permit NC0048861
A. (2.) TEMPORARY MEANS OF DISINFECTION
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
In the event that the wastewater treatment plant's ultraviolet (UV) disinfection system should fail,
underperform, or otherwise be removed from effective service, the permittee or his agent should
immediately inform the Surface Water Protection Section staff of the Washington Regional Office of
this development and discuss temporary, alternate means for disinfection of the effluent.
If chlorine compounds are used as temporary means of disinfection, the total residual chlorine (TRC)
concentration of the effluent must be monitored on a daily basis while this method of disinfection is in
use and values must be reported on the discharge monitoring report. TRC in the effluent may not
exceed 28 µg/L; therefore, dechlorination methods may also be necessary to ensure protection of water
quality in the receiving stream.
In the event that TRC monitoring should occur, 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.
Use of a disinfection system other than the permitted UV system during circumstances not deemed as
emergency and/or temporary(replacement of lamps, lamp cleaning or maintenance, etc.)will be
considered a violation of the terms of this permit.
A. (3.) 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)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 data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
Page 5 of 8

Permit NC0048861
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.
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: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-npdes-electronic-reporting-rule
Page 6 of 8

Permit NC0048861
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://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
cthl
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/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
Page 7 of 8

Permit NC0048861
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 8 of 8

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Location n ,v.,
Receiving Stream: Scuppernong River Stream Segment: 30-14-4-(1)
Scale 1:24,000
Drainage Basin: Pasquotank River Basin Sub-Basin: 03-01-53
Latitude: 35°51'29" Longitude: 76°23'39" NPDES Permit NC0048861
Stream Class: C-Swamp HUC: 03010205 North
USGSQuad: Creswell,NC Washington County