NC0021946_Draft Permit_20210209

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Mayor Brian Shelton
Town of Rosman
PO Box 636
Rosman, NC 28772-0636
Dear Mayor Shelton:
NORTH CAROLINA
Environmental Quality
February 9, 2021
Subject: Draft NPDES Permit NCO021946
Rosman W WTP
Grade II Biological WPC
Transylvania 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:
1. Language has been updated in Section A. (1) and Section A. (4) to require electronic submission
of effluent data. Federal regulations require electronic submittal of all discharge monitoring
reports (DMRs).
2. Outfall map has been updated.
3. Facility address has been updated on the Permit Cover Sheet and Supplement to Permit Cover
Sheet to reflect the actual facility location.
4. Added receiving stream characteristics on the Supplement to Permit Cover Sheet and updated the
receiving stream classification per the surface water quality standards website.
5. The facility grade has been added in Section A. (1).
6. Units of measure added in Section A. (1).
The NPDES standard conditions (Parts II, Ill, 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/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 Transylvania 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 919-707-3619, or via e-mail [[e-mail]].
Q E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
mow•^^ ^ a F �+e\ /� 919.707.9000

Sincerely,
/r� L
Brianna Young
NPDES Compliance an Expedited Permitting Unit
cc: NPDES Files (Laserfiche)
Asheville Regional Office
Wastewater Operator Certification Group
Wes Royal, ORC

Permit NCO021946
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 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 Rosman
is hereby authorized to discharge wastewater from a facility located at the
Town of Rosman WWTP
Sewer Plant Road
Rosman
Transylvania County
to receiving waters designated as the French Broad River in the French Broad 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 September 30, 2025.
Signed this day
S. Daniel Smith
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NCO021946
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby
superseded and, as of this issuance, any previously issued permit describing this treatment facility or
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.
The Town of Rosman
is hereby authorized to:
1. Continue to operate a wastewater treatment facility up to ad esign flow of 0.250 MGD
consisting of following treatment components:
• Influent pump station with three (3) 360 gpm pumps
• Mechanical rotary bar screen
• 0.25 MGD sequencing batch reactor consisting of:
o Dual 180,000 gallon reactor basins each containing:
■ Decanter and 5 Hp floating mixer with coarse air diffusers
• One (1) 42,000 gallon post -equalization basin with dual 650 gpm pumps
• Dual channel UV disinfection units
• One (1) 13,000 gallon wash -water storage basin with splitter box
• One (1) 54,000 gallon aerobic digester with coarse air diffusers
• Decanter and 100 gpm sludge transfer pump
• One (1) 19,000 gallon aerated sludge storage basin
• Belt filter press
• Blower building
• Lab/Office building
• One (1) 180 kW emergency generator
• Cascade aerator
• Gravity effluent outfall
This facility is located at the Rosman WWTP on Sewer Plant Road in Rosman in Transylvania
County.
2. Discharge from said treatment works at the location specified on the attached map into the
French Broad River [Stream Segment: 6-(1)], a waterbody currently classified B; Trout in
subbasin 04-03-01 [HUC: 060101050105] in the French Broad River Basin.
Page 2 of 7

Permit NCO021946
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade II Biological WPCS [15A NCAC 08G .0302]
During the period beginning on the effective date of this 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:
EFFLUENT CHARACTERISTICS
Parameter Code
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow 50050
0.25 MGD
Continuous
RecordingInfluentor
Effluent
BOD, 5-day(201C)2 C0310
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
Total Suspended Solids2 C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
NH3 as N (mg/L) C0610
Monitor& Report
2/Month
Composite
Effluent
Fecal Coliform 31616
(geometric mean)
200/ 100 ml
400/ 100 ml.
Weekly
Grab
Effluent
pH 00400
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Temperature(°C) 00010
Monitor& Report
Weekly
Grab
Effluent
Total Nitrogen (mg/L) C0600
NO2+NO3+TKN
Monitor& Report
Semi-annually
Composite
Effluent
Total Phosphorus (mg/L) C0665
Monitor& Report
Semi-annually
Composite
Effluent
Total Mercury (ng/L) 3 COMER
Monitor& Report
Once/Permit3
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR
application system [see Section A. (4)].
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. Based on the completion and approval of the N.C. Statewide mercury total Maximum Daily Load (TMDL),
the permit now requires one mercury analysis, using EPA Method 1631E, which must be completed within
the twelve (12) months prior to the next permit renewal. This requirement is included on the effluent page
and in Section A. (2).
See Section A. (3) for instructions should the facility's permitted UV system fail and an alternate means of
disinfection is required. Total Residual Chlorine monitoring requirements and limits are applicable if chlorine
compounds are used for disinfection.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 7

Permit NCO021946
A. (2) EFFLUENT MERCURY ANALYSIS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
The Pennittee shall provide one effluent mercury analysis, using EPA Method 1631E, in conjunction
with the next permit renewal application. The analysis should be taken within 12 months prior to the
application date. Any additional effluent mercury measurements conducted from the effective date of
this permit and up to the application date shall also be submitted with the renewal application.
If the result of the mercury analysis is not provided with the application, the application may be
returned as incomplete and the Permittee considered non -compliant.
A. (3) 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 Water Quality Regional Operations Section staff of the Asheville 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. (4) 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 NPDESPermits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
Page 4 of 7

Permit NC0021946
1. RegortinE Reuuirements [Supersedes Section D. (2.) and Section E. (5.) (a
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: httt)s://dea.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.
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(lx9), 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)].
Page 5 of 7

Permit NC0021946
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:
httt)s://www.federalreaister.aov/documents/2015/10/22/2015-24954/national pollutant-discharae-
elimination-system-nyd es-electronic-reporting-ru le
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 fortemporary electronic reporting waivers must be submitted in writing to
the Division forwritten 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://deg.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
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. (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:
bttp://deg.nc.gov/about/divisions/water-resources/ed mr
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:
Page 6 of 7

Permit NCO021946
V 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 quaked 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 offines 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 7 of 7

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Town of Rosman
Rosman WWTP
NPDES Permit NCO021946
Receiving Stream: French Broad River Stream Class: B; Tr
Stream Segment: 6-(1) Sub -Basin #: 04-03-01
River Basin: French Broad HUC: 060101050105
County: Transylvania
N
A
SCALE
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Facility Location
scale not shown
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