NC0087645_Draft Permit_20221102

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ROY COOPER 4
Governor ��,,��
ELIZABETH S.BISER `�1 1'
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
November 2,2022
Honorable Patricia Williams
Mayor,Town of Milton
PO Box 85
Milton,NC 27305-0085
Subject: DRAFT NPDES PERMIT NC0087645
Milton WWTP
Grade II Biological Water Treatment Facility
[15A NCAC 08G.0302]
Caswell County
Dear Mayor Williams:
Enclosed with this letter is a copy of the draft permit for your facility. Please review the draft very carefully
to ensure thorough understanding of the conditions and requirements it contains. Your permit is among
several in the Roanoke River Basin that the Division has targeted for expedited renewal.
This draft contains the following changes from the existing permit:
• Updated Section A.(3.)to be consistent with current federal requirements for electronic reporting
• Outfall Map updated
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 is available at https://bit.ly/2BZ4xxx 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 Caswell 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 email at[[e-mail].
Sincerely,
beiac
Als.....icr
Y
Emily Richards
Enviromnental Specialist II
NPDES Program
ec: NPDES files
1 Winston Salem Regional Office
�� North Carolina Department of ironmental Quality Divivea of Warr Resources
D E Q2'i N 12 North Salisbury Street 11611Env Mail Service CenterI I Ralet North Carolina 27699 1611
y N .�w ., �/ 919 707 9000
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Permit NC0087645
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 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 Milton
is hereby authorized to discharge wastewater from a facility located at the
Milton WWTP
Doll Branch Road south of Milton
Caswell County
to receiving waters designated as Country Line Creek in subbasin 03-02-04 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 May 31,2027.
Signed this day
Richard E.Rogers,Jr.
Director,Division of Water Resources
By Authority of the Environmental Management Commission
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Permit NC0087645
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 Milton is hereby authorized to:
1. Construct and operate a 0.025 MGD wastewater treatment facility that includes the following
components:
• Flow splitter box
• 9,400 gallon equalization tank with influent bar screen
• Dual 105-GPM equalization pumps
• 25,000-gallon aeration tank with 320 ft2 of suspended media
• Dual 166-CFM air blower
• 100-ft2 clarifier with air-lift sludge return pumps
• UV disinfection
• Effluent flow meter
• Dual 3,000 gallon sludge holding tanks
• 36 kW emergency generator
This facility is located off Doll Branch Road(NCSR 1538)south of Milton in Caswell County.
•
2. Discharge wastewater from said treatment works at the location specified on the attached map into
Country Line Creek,currently classified C waters in hydrologic unit 03010104 of the Roanoke River
Basin.
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Permit NC0087645
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 Pennittee is authorized to
discharge from outfall 001. Such discharges shall be limited and monitored'by the Permittee as specified below:
PARAMETER LIMITS MONITORING REQUIREMENTS
[PCS Code] Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location`
Flow Influent or
[50050] 0.025 MGD Continuous Recording Effluent
BOD.5 day(20°C)3 Influent and
[00310] 30.0 mg/L 45.0 mg/L Weekly Grab Effluent
Total Suspended Solids3 30.0 mg/L 45.0 mg/L Weekly Grab Influent and
[00530] Effluent
NH3 as N (April 1 -October
31) 15.0 mg/L 35.0 mg/L Weekly Grab Effluent
[00610]
NH3 as N(November 1 -March
31) Weekly Grab Effluent
[00610]
Fecal Coliform (geometric
mean) 200/100 ml 400/100 ml Weekly Grab Effluent
[31616]
Total Residual Chlorine4 28 µg/L 2/Week Grab Effluent
[50060]
Total Nitrogen (NO2+NO3+
TKN) Quarterly Grab Effluent
[00600]
Total Phosphorus Quarterly Grab Effluent
[00665]
Dissolved Oxygen Weekly Grab Effluent,
[00300] U&D
Temperature(°C) Daily Grab Effluent
[00010]
Temperature(°C)
[00010] Weekly Grab U&D
pH >6.0 and<9.0 standard units Weekly Grab Effluent
[00400] — —
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system[see A.(1)].
2. U:at least 20 feet upstream from the outfall. D:Country Line Creek at Highway 57.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the respective
influent value(85%removal).
4. Limit and monitoring requirements apply only if chlorine is used as a disinfectant or elsewhere in the treatment process.
The Permittee shall report all effluent TRC values reported by a NC-certified laboratory[including field-certified].
Effluent values below 5014,1 will be treated as zero for compliance purposes.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
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Permit NC0087645
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.)(a)l
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.
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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Permit NC0087645
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
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.)
(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 infonnation on North Carolina's eDMR
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Permit NC0087645
system,registering for eDMR and obtainingan eDMR user account,please visit the followingweb
Y g g
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:
'7 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.)l
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].
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Tow n of Milton - Milton WWTP N
NPDES Permit NC0087645
t.6.OCC 30C
Receiving Stream:Country line(leek Stream Class:C
River Basin:Roanoke Sub-Basin#:03-02-04
County:('aswell HUC:03010104 SCALE
1:10.000
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