NC0020842_Draft Permit_20230912

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Dfrector
Dennis Liles, Mayor
Town of Snow Hill
PO Box 247
Snow Hill, NC 28580
Mayor Liles:
NORTH CAROLINA
Environmental Quality
September 12, 2023
Subject: Draft NPDES Permit NCO020842
Town of Snow Hill WWTP
Grade III Biological WPCS
Greene County
Attached with this letter is a copy of the Draft NPDES permit renewal for the Town's WWTP. Please
review this draft carefully to ensure a thorough understanding of the requirements and conditions it
contains. There are a few changes in the draft attached here from the existing permit. These changes and
other considerations are summarized below.
• Regulatory Citations - Language has been added where necessary in the permit to provide regulatory
citations for permit requirements. This includes updates to citations that have been changed with
recent rule revisions.
• Electronic Reporting - Permit language has been modified to be consistent with the finalization of
federal requirements for electronic reporting.
• Updates to Footnotes on Effluent Table — Language in the footnotes has been updated to be consistent
with our current descriptions.
• Footnote 2 in the Effluent Table has been updated to include reference to the membership in the
Lower Neuse Basin Association and waiver of instream monitoring as long as membership is
maintained.
• Total Nitrogen Annual Loading — the eDMR code for annual total nitrogen loading has been added in
the Effluent Table.
• Nutrient Management Re -Opener — A Special Condition [A.(6.)] has been added to the permit to
address re -opening of the permit for the potential inclusion of additional nutrient control
requirements.
• Map Update — Permit map information has been 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 of the standard conditions is available at https://bit.ly/3k5NFaL and can be viewed online or
downloaded as a PDF file.
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
NORTH WOONA
DeFa nemnlEnvi---i0- 919.707.9000

Mayor Dennis Liles
Town of Snow Hill WWTP
Page 2
Concurrent with this notification the Division is publishing a notice in a newspaper having general
circulation in the Greene 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 bradley.bennett(&deq.nc.gov or at [phone]. 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: Drake Robart — Town of Snow Hill - electronic
NPDES Files - electronic
Washington Regional Office / Water Quality — electronic
Operator Certification Program/Maureen Kinney — electronic

Draft Permit NCO020842
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 Snow Hill
is hereby authorized to discharge wastewater from a facility located at the
Snow Hill WWTP
102 Daniel Road
Snow Hill
Greene County
to receiving waters designated as Contentnea Creek in the Neuse River Basin in accordance with effluent
limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof.
The permit shall become effective
This permit and the authorization to discharge shall expire at midnight on May 31, 2028.
If thepermittee intends to continue discharging at the facility beyond the term of this permit, a renewal
application must be submitted no later than December 3, 2027 (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
Page 1 of 10

Draft Permit NCO020842
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 Snow Hill is hereby authorized to:
Continue to operate an existing 0.5 MGD wastewater treatment facility that includes the
following components:
Mechanical bar screen
• Influent grit chamber
Two oxidation ditches
• Two clarifiers
Two chlorine contact chambers
• Dechlorination
Post -aeration
• Influent and effluent flow meter
Two aerobic sludge digesters
• Two sludge holding tanks
Two drying beds
This facility is located at the Snow Hill WWTP (102 Daniel Road, Snow Hill) in Greene County.
2. Discharge from said treatment works via Outfall 001 at the location specified on the attached
map into Contentnea Creek [Stream Segment: 27-57-(20.2)], a waterbody currently classified C-
Swamp NSW within subbasin 03-04-07 [HUC 030202020703] of the Neuse River Basin.
Page 2 of 10

Draft Permit NCO020842
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade III Biological Water Pollution Control System [15A NCAC 08G .0302]
Beginning on 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 monitored' by the
Permittee as specified below:
PARAMETER
eDMR
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Fre uenc
Sample Type
2
Sample Location
Flow
50050
0.5 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
82220
Monitor and Report
Monthly
Recorded or
Calculated
Influent or Effluent
BOD5, 20oC a April 1 — October 31
C0310
15.0 m /L
22.5 m /L
Weekly
Composite
Influent & Effluent
BOD5, 20,,C 3 Nov. 1 — March 31
C0310
30.0 m /L
45.0 m /L
Weekly
Composite
Influent & Effluent
Total Suspended Solids
C0530
30.0 m /L
45.0 m /L
Weekly
Composite
Influent & Effluent
NH3 as N (April 1 — October 31
C0610
4.0 m /L
12.0 m /L
Weekly
Composite
Effluent
NH3 as N Nov. 1 — Marc 31
C0610
8.0 m /L
24.0 m /L
Weekly
Composite
Effluent
Total Residual Chlorine 4
50060
28 /L
2/Week
Grab
Effluent
pH
00400
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Fecal Coliform(geometric mean
31616]
200/100 ml 1 400/100 ml I
Weekly
Grab
Effluent
Dissolved Oxvcjen
00300
Daily average >: 5.0 m /L
Weekly
Grab
Effluent
Dissolved Oxygen m /L
00300
Monitor and Report
See Footnote 2
Grab
U, D
Conductivity
00094
Monitor and Report
Weekly
Grab
Effluent
Conductivity
00094
Monitor and Report
See Footnote 2
Grab
U, D
Temperature, OC
00010
Monitor and Report
See Footnote 2
Grab
U, D
Temperature, °C
00010
Monitor and Report
Daily
Grab
Effluent
Total Phosphorus 6
C0665
2.0 mg/L (quarterly average)
Weekly
Composite
Effluent
TKN (mg/L) 6
00625
Monitor and Report
Weekly
Composite
Effluent
NO3-N + NO2-N (mg/L) 6
00630
Monitor and Report
Weekly
Composite
Effluent
TN (mg/L) 6
C0600
Monitor and Report
Weekly
Composite
Effluent
TN Load �
QM600
QY600
Monitor and Report (pounds/month)
5, 632 pounds/year (annual mass loading)
Monthly
Annually
Calculated
Calculated
Effluent
Effluent
Footnote,•
1. The permittee shall submit discharge monitoring reports electronically using the Division's eDMR system [see A. (6)]
2. U: Upstream at U.S. 13/258. D: Downstream at NC Highway 123. Upstream and downstream samples shall be grab
samples collected three times per week during the months of June through September and weekly during the remainder
of the year. All sites involved in the collaborative effort between Snow Hill, Hookerton and Maury Sanitary shall be
sampled on the same day. Instream monitoring is provisionally waived in light of the permittee's participation in the
Lower Neuse Basin Association. If at any time during the term of this permit membership in the association is
terminated, the Division shall be notified immediately, and instream monitoring shall be immediately conducted as
stipulated in this permit.
3. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of their respective
influent value (85% removal).
4. The Division shall consider all effluent TRC values reported below 50 ug/1 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 ug/l.
5. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during each
calendar quarter (January -March, April -June, July -September, October -December).
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Draft Permit NCO020842
Footnotes Con't
6. For a given wastewater sample, TN = TKN + NO3-N+NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N+NO2-N are nitrate and nitrite nitrogen, respectively.
7. TN Load is the mass quantity of Total Nitrogen discharged in a given period of time. See condition A. (2), Calculation of
TN Loads. Compliance with this limit shall be determined in accordance with condition A. (3) of this permit.
There shall be no discharge offloating solids or visible foam in other than trace amounts.
A. (2.) CALCULATION OF TOTAL NITROGEN LOADS
[G.S. 143-215.1(B)]
a. The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (pounds/month) = TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration (mg/L) of the composite
samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/month)
8.34 = conversion factor, from (mg/L x MG) to pounds
ii. Annual TN Load (pounds/year) = Sum of the 12 Monthly TN Loads for the calendar
year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the appropriate
discharge monitoring report for each month and shall report each year's results (lb/yr) with the
December report for that year.
A. (3.) ANNUAL LIMITS FOR TOTAL NITROGEN
[G.S. 143-215.1(b)]
a. Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin are annual limits and are applied for the calendar year.
b. For any given calendar year, the Permittee shall be in compliance with the annual TN Load limit in
this Permit if:
i. the Permittee's annual TN Load is less than or equal to said limit, or
ii. the Permittee is a Co-Permittee Member of a compliance association.
c. If Permittee is not a co-permittee member of a compliance association and the Permittee's
cumulative annual TN discharge exceeds the effective TN Load limit in this permit at any point
during the calendar year, the Permittee is in violation of its TN Load limit, and each day of a
continuing violation shall constitute a separate violation.
d. The TN Load limit in this Permit (if any) may be modified as the result of allowable changes in the
Permittee's TN allocation.
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Draft Permit NCO020842
Allowable changes include those resulting from purchase of TN allocation from the Wetlands
Restoration Fund; purchase, sale, trade, or lease of allocation between the Permittee and other
dischargers; regionalization; and other transactions approved by the Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
iii. Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
iv. Application shall be sent to:
NCDWR / NPDES Program
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
e. If the Permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association's group NPDES permit and the TN limits
therein.
The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
ii. Association roster(s) and members' TN allocations will be updated annually and in accordance
with state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the association's
NPDES permit.
(1) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(2) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of
this Permit and are not affected by the Permittee's membership in a compliance association.
A. (4.) TOTAL NITROGEN ALLOCATIONS
[G.S. 143-215.1(b)]
a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or
transferred to the Permittee in accordance with the Neuse River nutrient management rule (T15A
NCAC 02B .0713) and the status of each as of permit issuance. For compliance purposes, this table
does not supercede any TN limit(s) established elsewhere in this permit or in the NPDES permit of
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Draft Permit NCO020842
a compliance association of which the Permittee is a Co-Permittee Member.
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT (')
STATUS
Discharge
Estuary (Ib/yr)
(Ib/yr)
Base
Assigned by Rule
12/7/97;
2,816
5,632
Active
(T15A NCAC 02B .0713)
4/1/03
Footnote:
(1) Transport Factor = 50%
Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical
errors) or any change to Active status of any of the listed allocations shall be considered a major
modification of this permit and shall be subject to the public review process afforded such modifications
under state and federal rules.
A. (4) PERMIT RE -OPENER: NUTRIENT MANAGEMENT
[NCGS 143-215.1 (b)]
a) Pursuant to N.C. General Statues Section 143-215.1 and implementing rules found in Title 15A of
North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 0211.0112(b)(1) and
02H.0114(a), and Part II, Sections B.12 and B.13. of this Permit, the Director of DWR may reopen
this permit to require nutrient management measures for the discharge. The results of water quality
monitoring, modelling or other evaluations may require that conditions for total nitrogen and total
phosphorus control be imposed on this permit.
b) The Division may, upon written notification to the permittee, re -open this permit in order to
incorporate or modify effluent limits, monitoring and reporting requirements, and other permit
conditions when it deems such action is necessary to implement TMDL(s) approved by the USEPA.
A. (5.) ELECTRONIC REPORTING OF 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.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
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Draft Permit NCO020842
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.
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)].
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Draft Permit NCO020842
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.federalre ig ster.gov/documents/2Ol5/lO/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. (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:
http:Hdeq.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:
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Draft Permit NC0020842
"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. "
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].
or
Page 9 of 10

Town of Snow Hill
Snow Hill WWTP
Receiving Stream:
Contentnea Creek Stream Class:
C; Sw; NSW
River Basin:
Neuse Sub -Basin:
03-04-07
Outfall Latitude:
35' 27' 28" Outfall Longitude: 77' 39' 55"
Stream Segment
27-86-(7) HUCM
030202030703
Grid uad:
F28NW / Snow Hill County:
Greene
Facility "R
Location
(not to scale)
th NPDES Permit NCO020842
Page 10 of 10