NC0021253_Draft Permit_20200212

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ROY COOPER ? o)
Governor •
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aMICHAEL S.REGAN ` �a _
Secretary \ ==
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
February 12, 2020
Sue Sayger, Public Services Director
City of Havelock
PO Box 368
Havelock,North Carolina 28532
Subject: Draft NPDES Permit Renewal
Permit NC0021253
Havelock WWTP
Craven County
Grade IV Biological WPCS
SIC Code 4952
Dear Ms. Sayger:
Enclosed 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. There are several changes from the existing permit, including the following:
• Upon completion of authorized construction in 2015, the Havelock WWTP entered the
2.25 MGD flow tier. As such, Effluent Limitations and Monitoring Requirements for the
1.9.MGD flow tier have been removed from the permit.
• Upon completion of authorized construction relocating the outfall to the Neuse River
Estuary with a diffuser in 2015, all references to Outfall 001 to East Prong Slocum Creek
have been removed from the permit.
• For compatibility between the Division's and USEPA's databases and the eDMR electronic
reporting system, communicated to the City of Havelock via e-mail in April 2016, the
Neuse River Estuary outfall designation has been changed from Outfall 001 to Outfall 002.
• As it is no longer in use, the lime addition system has been removed from the facility's
components list [See Supplement to Permit Cover Sheet].
• Regulatory citations have been added to the permit.
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
for each flow tier [See Sections A. (1.)—A. (3.)] as well as to the Effluent Pollutant Scan
special condition [See A. (8.)].
• Based on Division guidance regarding the reduction of monitoring frequencies in NPDES
permits for exceptionally performing facilities, monitoring requirements for Ammonia-N
(NH3-N), Total Suspended Solids (TSS), and Enterococci have been reduced to twice per
week [See Sections A. (1.)—A. (3.)].
-.4 North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
otivn.l:Mal I nYa..Mr Orry 919.707.9000

• In accordance with Division guidance regarding the reduction of monitoring frequencies
in NPDES permits for exceptionally performing facilities, a footnote has been added to the
Effluent Limitations and Monitoring Requirements sheets specifying that 2/week sampling
shall be conducted on two non-consecutive days within a week[See Footnote 5 in Sections
A. (1.)—A. (3.)].
• Based on Mercury TMDL evaluation showing fewer than two mercury values reported at
levels > 1 ng/L, the Mercury Minimization Plan (MMP) special condition has been
removed from the permit.
• The City of Havelock reported Total Silver at less than detection, with detection levels <
5.0 µg/L in the Effluent Pollutant Scans.The City's allowable discharge concentrations are
0.69 µg/L at 2.25 MGD,0.64 µg/L at 2.8 MGD,and 0.61 µg/L at 3.5 MGD for Total Silver.
DWR's laboratory identifies the target Practical Quantification Limit (PQL) for Total
Silver as 1.0 µg/L. 15A NCAC 2B .0505 (e) (4) requires that all test procedures must
produce detection and reporting levels that are below the permit discharge requirements
and all data generated must be reported to the approved detection level or lower reporting
level of the procedure. If no approved methods are capable of achieving a detection level
below the permit discharge requirement(or allowable discharge concentration),the method
with the lowest detection level must be used. The Town should use sufficiently sensitive
test methods for all pollutants, including when performing Effluent Pollutant Scans.
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards, the monitoring requirement for Total Zinc has been
removed from the permit [See Sections A. (1.)—A. (3.)].
• To provide guidance for instream monitoring of nutrients and Chlorophhyll-a, a note has
been added to the Instream Monitoring Requirements special condition describing depth
integrated sampling and defining the Photic Zone [See Section A. (4.)].
• Some of the wording has changed in Special Condition A. (7.), Chronic Toxicity Permit
Limit includingthat to allow for electronic submittal. Please review eachparagraph
carefully.
• Special Condition A. (8.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed (2021, 2022, and 2023), and to allow for
electronic submittal. In addition, at the end of the Special Condition, 2nd species Toxicity
Testing Requirements for municipal permit renewals per Federal Regulations [40 CFR
122.21(j)(5)] have been added.
• To ensure that the facility can meet the TN load limits upon expansion to the 2.8 and 3.5
MGD flow tiers, a special condition has been added for an Authorization to Operate to be
issued for each flow expansion based the Permittee's demonstration that the TN limits can
be met to the Division's satisfaction. [See Special Condition A. (11.)]
• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs)and program reports. The requirement to continue reporting discharge monitoring
data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)
interne application has been added to the permit [See Special Condition A. (12.)].
• As the facility no longer discharges to East Prong Slocum Creek, the permit map has been
modified to remove reference of the East Prong Slocum Creek outfall and its coordinates.
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
Page 2 of 3

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.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Craven County area, soliciting public comments on this draft permit.
Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES
Permitting Branch, 1617 Mail Service Center,Raleigh,NC 27699-1617 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 call me at(919) 707-3611 or by email at [e-mail].
Sincerely,
Gary Perlmutter, Environmental Specialist II
NPDES Complex Permitting Unit
Hardcopy: NPDES Files
eCopy: US EPA Region 4
DWR/Washington Regional Office/Water Quality/Robert Tankard
DWR/Operator Certification Program/Maureen Kinney
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Hanna Haedrick
Page3of3

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, the
City of Havelock
is hereby authorized to discharge wastewater from a facility located at the
Havelock WWTP
304 North Jackson Drive
Havelock, NC 28532
Craven County
to receiving waters designated as the Neuse River in the Neuse River Basin in accordance with the
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV
hereof.
This permit shall become effective Monti' y x :)O i .
This permit and the authorization to discharge shall expire at midnight on June 30, 2024.
Signed this day x x Wu.
I)RAI I
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0021253
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.
City of Havelock is hereby authorized to:
1. Continue to operate an existing 2.25 MGD wastewater treatment facility consisting of the
following components:
• Manual bar screen and grit removal systems
• Influent composite sampler
• Influent pump station
• Distribution box
• Two (2) 840.000 gallon first stage aeration basins with fine bubble aeration
• Two (2) 150,000 gallon second stage aeration basins with coarse bubble aeration
• One(1) 190.000 gallon second stage aeration basin with coarse bubble aeration
• Final clarifier pump station
• 7,500 gallon storage tank and chemical additive systems for polyaluminum chloride
• Distribution box
• Two (2) 65 feet diameter final clarifiers
• 7,500 gallon storage tank and chemical additive system for methanol
• Three(3) 7,500 ft3 multimedia denitrifying filters
• UV disinfection system
• One(1) reaeration basin with dual mechanical agitation
• Denitrification filters backwash pumps
• One(1) filter backwash waste detention tank
• Effluent flow meter
• Effluent composite sampler
• Effluent pump station with force main
• Post gravity cascade aerator
• 2,036 feet outfall pipe with 80 feet multiport diffuser
• One(1)waste solids holding tank
• Gravity belt thickener
• Solids stabilization tank,pumps,basin, truck loadout
This facility is located at Havelock WWTP, 304 North Jackson Drive, Havelock, in Craven
County.
Page 2 of 20

Permit NC0021253
2. Upon receipt and in accordance with an Authorization to Construct (AtC) to expand above 2.25
MGD to 2.8 MGD and upon submittal of a signed Engineering Certificate, and upon approval of
Authorization to Operate (AtO) from the Division according to Special Condition A. (10.),
construct and operate a 2.8 MGD treatment facility with the following minimum additional
components:
• New 570,000 gallon three-stage BNR treatment train
• New nitrification recycle pump station
• New final clarifier pump station and distribution box
3. Upon receipt and in accordance wtih an AtC permit to expand above 2.8 MGD to 3.5 MGD and
upon submittal of a signed Engineering Certificate,and upon approval of an AtO from the Division
according to Special Condition A. (10.), construct and operate a 3.5 MGD treatment facility with
the following minimum additional components:
• New manual bar screen
• New 180,000 gallon post-anoxic process train to increase BNR to five-stages
• New 65 feet diameter final clarifier
• New 7,500 ft3 multimedia denitrifying filter
• New solids storage and dewatering filters
AtC requests along with the minimum additional components shall be submitted to the address
below:
NC DWR/NPDES Permitting
Attn: AtC Coordinator
1617 Mail Service Center
Raleigh,NC 27699-1617
4. Discharge from said treatment works through existing Outfall 002 into the Neuse River, a Class
SB-Swamp, NSW water in the Neuse River Basin, at the location specified on the attached map.
Page 3 of 20

Permit NC0021253
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (2.25 MGD)
[15A NCAC 02B .0400 et seq., 15A NCAC 05B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
a. Beginning on the effective date of this permit and lasting until expansion above 2.25 MGD or
expiration, whichever happens first, the Permittee is authorized to discharge 2.25 MGD of treated
wastewater from Outfall 002 through a submerged multiport diffuser into the Neuse River. Such
discharges shall be limited and monitored ' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location 2
Flow(MGD) 50050 2.25 Continuous Recording I or E
Total Monthly Flow Recorded or
(MG/mo)3 82220 Monitor and Report Monthly Calculated I or E
BOD3 4
(April 1—October 31) 5.0 mg/L 7.5 mg/L Daily Composite I, E
C0310
BODs 4 10.0 mg/L 15.0 mg/L Daily Composite I, E
(November 1—March 31)
Total Suspended Solids CO530 30.0 mg/L 45.0 mg/L 2/week 5 Composite I, E
(TSS)
Ammonia as N (NH3-N) C0160 1.0 mg/L 3.0 mg/L 2/week5 Composite E
Dissolved Oxygen (DO) 00300 Daily Average >— 5.0 mg/L Daily Grab E
Enterococci
(geometric mean) 61211 35/100 mL 276/100 mL 2/week 5 Grab E
pH 00400 Between 8.50 and 6.8 S.U. Daily Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
TKN 6(mg/L) 00625 Monitor and Report Weekly Composite E
NO2-N + NO3-N 6(mg/L) 00630 Monitor and Report Weekly Composite E
Total Nitrogen (TN)3.6 C0600 Monitor and Report Weekly Composite E
(mg/L)
TN Load 3 QM600 Monitor and Report(lb/month) Monthly Calculated E
QY600 21,400 lb/yr 7 Annually
Total Phosphorus(TP) C0665 2.0 mg/L(quarterly average)8 Weekly Composite E
Total Copper(pg/L) 01042 Monitor and Report Quarterly Composite E
Chronic Toxicity 9 TGP3E Quarterly Composite E
Effluent Pollutant Scan NC01 Footnote 10 E
See Footnotes next page.
Page 4 of 20

Permit NC0021253
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application; see Section A. (12.).
2. I = Influent. E = Effluent. See special condition A. (4.) for instream monitoring requirements and
conditional waiver.
3. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (5.)
for calculation and reporting requirements.
4. The monthly average BOD5 and TSS concentrations shall not exceed 15% of the respective influent value
(85%removal).
5. Sampling 2/week must occur on any two non-consecutive days during the calendar week.
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/nitrite nitrogen, respectively.
7. Compliance with this limit shall be determined in accordance with special condition A. (6.).
8. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association.
Termination of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar
quarters are January-March, April-June,July-September, and October-December.
9. Whole Effluent Toxicity will be monitored using the Pass/Fail Mysidopsis bahia at 15%effluent. Samples
shall be taken in January, April, July and October; see Section A. (7.).
10. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A.
(8.).
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See Section A. (11.) if chlorine or a chlorine derivative is utilized.
Page 5 of 20

Permit NC0021253
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (2.8 MGD)
[15A NCAC 02B .0400 et seq., 15A NCAC 05B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
a. Beginning upon receipt of the signed Engineer's Certification and the issuance of the Authorization
to Operate for expansion to 2.8 MGD,and lasting until expansion above 2.8 MGD or permit expiration,
whichever comes first,the Permittee is authorized to discharge 2.8 MGD of treated wastewater from
Outfall 002 through a submerged multiport diffuser into the Neuse River. Such discharges shall be
limited and monitored I by the Permittee as specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location 2
Flow(MGD) 50050 2.8 Continuous Recording I or E
Total Monthly Flow 82220 Monitor and Report Monthly Recorded or I or E
(MG/mo)3 Calculated
BODS 4 5.0 mg/L 7.5 mg/L Daily Composite I, E
(April 1—October 31)
C0310
BOD5 4
-
(November 1—March 31) 10.0 mg/L 15.0 mg/L Daily Composite I, E
Total Suspended Solids
(TSS)4 C0530 30.0 mg/L 45.0 mg/L 2/weeks Composite I, E
Ammonia as N (NH3-N) C0160 1.0 mg/L 3.0 mg/L 2/week5 Composite E
Dissolved Oxygen(DO) 00300 Daily Average >— 5.0 mg/L Daily Grab E
Enterococci
(geometric mean) 61211 35/100 mL 276/100 mL 2/week5 Grab E
pH 00400 Between 8.50 and 6.8 S.U. Daily Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
TKN 6(mg/L) 00625 Monitor and Report Weekly Composite E
NO2-N + NO3-N 6(mg/L) 00630 Monitor and Report Weekly Composite E
Total Nitrogen (TN)3 6 C0600 Monitor and Report Weekly Composite E
(mg/L)
TN Load 3 QM600 Monitor and Report(lb/month) Monthly Calculated E
QY600 21,400 lb/yr 7 Annually
Total Phosphorus(TP) C0665 2.0 mg/L(quarterly average)8 Weekly Composite E
Total Copper(pg/L) 01042 Monitor and Report Quarterly Composite E
Chronic Toxicity 9 TGP3E Quarterly Composite E
Effluent Pollutant Scan NC01 Footnote 10 E
See Footnotes next page.
Page 6 of 20

Permit NC0021253
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application; see Section A. (12.).
2. I = Influent. E = Effluent. See special condition A. (4.) for instream monitoring requirements and
conditional waiver.
3. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (5.)
for calculation and reporting requirements.
4. The monthly average BOD5 and TSS concentrations shall not exceed 15% of the respective influent value
(85%removal).
5. Sampling 2/week must occur on any two non-consecutive days during the calendar week.
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/nitrite nitrogen, respectively.
7. Compliance with this limit shall be determined in accordance with special condition A. (6.).
8. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association.
Termination of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar
quarters are January-March,April-June,July-September,and October-December.
9. Whole Effluent Toxicity will be monitored using the Pass/Fail Mysidopsis bahia at 16%effluent. Samples
shall be taken in January, April, July and October; see Section A. (7.).
10. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A.
(8.).
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See Section A. (11.) if chlorine or a chlorine derivative is utilized.
Page 7 of 20

Permit NC0021253
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (3.5 MGD)
[15A NCAC 02B .0400 et seq., 15A NCAC 05B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
a. Beginning upon receipt of the signed Engineer's Certification and the issuance of the Authorization
to Operate for expansion to 3.5 MGD and lasting until permit expiration, the Permittee is authorized
to discharge 3.5 MGD of treated wastewater from Outfall 002 through a submerged multiport
diffuser into the Neuse River. Such discharges shall be limited and monitored ' by the Permittee as
specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location 2
Flow(MGD) 50050 3.5 Continuous Recording I or E
Total Monthly3 Flow 82220 Monitor and Report Monthly Recorded or I or E
(MG/mo) Calculated
BODs 4
(April 1—October 31) 5.0 mg/L 7.5 mg/L Daily Composite I, E
C0310
BODs 4 10.0 mg/L 15.0 mg/L Daily Composite I, E
(November 1— r M h ac 31)
Total Suspended Solids
(TSS)4 C0530 30.0 mg/L 45.0 mg/L 2/week5 Composite I, E
Ammonia as N (NH3-N) C0160 1.0 mg/L 3.0 mg/L 2/week5 Composite E
Dissolved Oxygen (DO) 00300 Daily Average >— 5.0 mg/L Daily Grab E
Enterococci
(geometric mean) 61211 35/100 mL 276/100 mL 2/week5 Grab E
pH 00400 Between 8.50 and 6.8 S.U. Daily Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
TKN 6(mg/L) 00625 Monitor and Report Weekly Composite E
NO2-N + NO3-N 6(mg/L) 00630 Monitor and Report Weekly Composite E
Total Nitrogen(TN)3.6 CO600 Monitor and Report Weekly Composite E
(mg/L)
TN Load 3 QM600 Monitor and Report(lb/month) Monthly Calculated E
QY600 21,400 lb/yr 7 Annually
Total Phosphorus(TP) C0665 2.0 mg/L(quarterly average)8 Weekly Composite E
Total Copper(pg/L) 01042 Monitor and Report Quarterly Composite E
Chronic Toxicity 9 TGP3E Quarterly Composite E
Effluent Pollutant Scan NC01 Footnote 10 E
See Footnotes next page.
Page 8 of 20

Permit NC0021253
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application; see Section A. (12.).
2. I = Influent. E = Effluent. See special condition A. (4.) for instream monitoring requirements and
conditional waiver.
3. Total Monthly Flow and Total Nitrogen are required to calculate TN Load. See special condition A. (5.)
for calculation and reporting requirements.
4. The monthly average BOD5 and TSS concentrations shall not exceed 15%of the respective influent value
(85%removal).
5. Sampling 2/week must occur on any two non-consecutive days during the calendar week.
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/nitrite nitrogen,respectively.
7. Compliance with this limit shall be determined in accordance with special condition A. (6.).
8. TP quarterly limit is based on membership in the Lower Neuse Nutrient Compliance Association.
Termination of membership will automatically assign 1.0 mg/L as the TP monthly limit. The calendar
quarters are January-March,April-June,July-September, and October-December.
9. Whole Effluent Toxicity will be monitored using the Pass/Fail Mysidopsis bahia at 16%effluent. Samples
shall be taken in January, April,July and October; see Section A. (7.).
10. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A.
(8•)•
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
c. See Section A. (11.) if chlorine or a chlorine derivative is utilized.
Page 9 of 20

Permit NC0021253
A. (4.) INSTREAM MONITORING REQUIREMENTS [NCGS 143-215.1(b)]
a. Instream monitoring is required for the following parameters and locations while discharging via a
diffuser into the Neuse River. No provisional waiver is applicable:
S 1 =upstream 10 feet (approximately 2,076 feet offshore, perpendicular to diffuser center);
S2 = downstream 10 feet (approximately 2,076 feet offshore, perpendicular to diffuser center);
S3 = within 10 feet beyond the end of the diffuser and in line with the diffuser.
EFFLUENT SAMPLE TYPE MEASUREMENT FREQUENCY
CHARACTERISTICS
Dissolved Oxygen(mg/L) Vertical Weekly Monthly
(1 meter increments) (April—October) (November—March)
Temperature(°C) Vertical Weekly Monthly
(1 meter increments) (April—October) (November—March)
Salinity(%o) Vertical Weekly Monthly
(1 meter increments) (April—October) (November—March)
pH (S.U.) Vertical Weekly N/A
(1 meter increments) (April—October)
Enterococci (#/100 mL) Surface Weekly Monthly
(April—October) (November—March)
Secchi Depth (m) Photic Zone 2/Month N/A
(June—September)
TKN m L Depth integrated 2/Month N A
( g/ ) (use composite sampler) (June—September) /
Chlorophyll-a(mg/L) Depth integrated 2/Month N/A
(use composite sampler) (June—September)
NO2-N + NO3-N (mg/L) Depth integrated 2/Month N/A
(use composite sampler) (June—September)
NH3-N (mg/L) Depth integrated 2/Month N/A
(use composite sampler) (June—September)
Total Phosphorus(mg/L) Depth integrated 2/Month N/A
(use composite sampler) (June—September)
Note: Depth integrated samples shall be composites taken throughout the water column within
the Photic Zone (2x the Secchi Depth). Samples collected 2/month shall be taken concurrently
with weekly samples.
Page 10 of 20

Permit NC0021253
A. (5.) CALCULATION OF TOTAL NITROGEN LOADS [NCGS 143-215.1(b)]
a. The Permittee shall calculate monthly and annual TN Loads as follows:
(i.) Monthly TN Load (lb/mo) = 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 (Ib/yr) = Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and pounds/month) in the
appropriate discharge monitoring report for each month and shall report each year's results
(pounds/year) with the December report for that year.
A. (6.) ANNUAL LIMITS FOR TOTAL NITROGEN [NCGS 143-215.1(b)]
a. Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin apply on a calendar year basis.
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 discharge is less than or equal to its TN Load limit, or
(ii.) the Permittee is a co-permittee member of a compliance association.
c. If the 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.
(i.) 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.
Page 11 of 20

Permit NC0021253
(iv.) Application shall be sent to:
NC DWR/NPDES Permitting
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.
(i.) 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.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) 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. (7.) CHRONIC TOXICITY PERMIT LIMIT (Quarterly) [15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Mysidopsis bahia at an effluent concentration of 15% at 2.25 MGD, 16% at 2.8 MGD, and
16% at 3.5 MGD.
The permit holder shall perform at a minimum, quarterly monitoring using procedures described below
to establish compliance with the permit condition. The tests will be performed during the months of
January, April, July, and October. These months signify the first month of each three-month toxicity
testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple-concentration testing shall be performed (at a minimum) in
each of the two following months as described in EPA Method 1007.0, Mysid, Mysidopsis bahia,
Survival, Growth, and Fecundity Test, as described in Short-Term Methods for Estimating the
Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third
Edition, EPA821-R-02-014, October 2002.
The test procedure will be based on EPA Method 1007.0, Mysid, Mysidopsis bahia, Survival, Growth,
and Fecundity Test, as described in Short-Term Methods for Estimating the Chronic Toxicity of Effluents
Page 12 of 20

Permit NC0021253
and Receiving Waters to Marine and Estuarine Organisms, Third Edition, EPA-821-R-02-014. The
procedure will be performed as written with the following exceptions:
• The test treatments will consist of a control and a 15% at 2.25 MGD, 16% at 2.8 MGD,and 16%
at 3.5 MGD effluent concentration("pass/fail"),or a control and five effluent concentrations,one
of which will be 15% at 2.25 MGD, 16% at 2.8 MGD, and 16% at 3.5 MGD and one of which
will be(1/2 the IWC) 7.5% at 2.25 MGD, 8% at 2.8 MGD, and 8% at 3.5 MGD.
• Mortality for pass/fail tests will be evaluated using the t test described in Section 11.3 in Methods
for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms, Fifth Edition,
EPA-821-R-02-012, October 2002, applying an alpha level of 0.05.
• The growth endpoint for pass/fail tests will be determined using Appendix G of Short-Term
Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and
Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002, applying an alpha level
of 0.01.
• Mortality and growth endpoints for multiple-concentration tests will be determined using
hypothesis testing as described in EPA Method 1007.0, Mysid, Mysidopsis bahia, Survival,
Growth, and Fecundity Test, as described in Short-Term Methods for Estimating the Chronic
Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third Edition,
EPA-821-R-02-014, October 2002.
• Fecundity will not be evaluated.
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system for the months in which tests were performed. For pass/fail results,report using
the parameter code TGP3E and for reporting Chronic Value results use the parameter code THP3E.
Aditionally, DWR Form AT-4 (original), is to be sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicity Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Or,results can be sent to the email, ATForms.ATB@,ncdenr.gov
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
n
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature.Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine
is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the Permittee will complete the information located at the top of the aquatic toxicity(AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of"No Flow" in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the Permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month. Assessment of toxicity compliance is based on the toxicity
Page 13 of 20

Permit NC0021253
testing quarter, which is the three-month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism growth, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the
last day of the month following the month of the initial monitoring.
Page 14 of 20

Permit NC0021253
A. (8.) EFFLUENT POLLUTANT SCAN [NCGS 143-215.4(b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below.
One scan must be performed in each of the following years: 2021, 2022, and 2023. Analytical methods
shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether
parameters are present in concentrations greater than applicable standards and criteria. Samples should be
collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e., do not
sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total
recoverable."
Ammonia(as N) C0610 Trans-1,2-dichloroethylene 34546 Bis(2-chloroethyl)ether 34273
Chlorine(total residual,TRC) 50060 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate C0100
Nitrate I Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate . 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
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Permit NC0021253
Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR Form DMR-
PPA-1 (or on a form approved by the Director)by December 31S`of each designated sampling year.The Permittee
must at least report completion of the test in the eDMR system by entering"1"or"Y"for parameter code NC01 -
Annual Pollutant Scan. If utilizing the DWR Form submit to the following address:
NC DEQ/DWR/NPDES Files, 1617 Mail Service Center,Raleigh,North Carolina 27699-1617.
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES WW-EDMR-Supplemental-Form
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to
additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).The US EPA
requires four (4) toxicity tests for a test organism other than the test species currently required in this
permit. The multiple species tests should be conducted either quarterly for a 12-month period prior to
submittal of the permit renewal application, or four tests performed at least annually in the four and one
half year period prior to the application. These tests shall be performed for acute or chronic toxicity,
whichever is specified in this permit. The multiple species toxicity test results shall be filed with the
Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Or,results can be sent to the email: [e-mail].
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements.Results should also be summarized in Part E(Toxicity
Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal application
to the NPDES Permitting Unit.
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Permit NC0021253
A. (9.) TOTAL NITROGEN ALLOCATIONS [NCGS 143-215.4(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 (15A rule managementNCAC 02B
g .0234)
and the status of each as of permit issuance. For compliance purposes, this table does not supersede
any TN limit(s) established elsewhere in this permit or in the NPDES permit of a compliance
association of which the Permittee is a Co-Permittee Member.
ALLOCATION AMOUNT
ALLOCATION SOURCE DATE STATUS
TYPE Estuary Discharge
(lb/year) (lb/year)
Base Assigned by Rule 12/7/97; 21,400 21,400 Active
(T15A NCAC 02B .0234) 4/1/03
TOTAL 21,400 21,400 Active
Footnote:
1. Transport Factor=100%
b. 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. (10.) AUTHORIZATION TO OPERATE [G.S. 143-215.1(b)]
a. Each increase in permitted flow beyond 2.25 MGD is further conditioned on issuance by the Director
of an Authorization to Operate (AtO). In order to receive each AtO, the Permittee must demonstrate
to the Division's satisfaction that it has completed treatment plant improvements, or acquired TN
allocations or offset credits, and can consistently meet its total nitrogen limit at the increased flow.
b. Authorization to Operate requests along with the demonstration of capability to meet TN limits shall
be submitted to the address below:
NC DWRINPDES Permitting
Attn: Nutrient Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
A. (11.) USE OF CHLORINATION FOR DISINFECTION [NCGS 143-215.4(b)]
a. If chlorine or chlorine derivative compounds are used as a means of chlorination disinfection, the
Permittee must inform the Surface Water Protection Section staff of the Washington Regional Office
of this action. Also, a total residual chlorine (TRC) daily compliance limit will immediately apply for
the duration of the chlorination, 13 µg/L for discharge to the Neuse River. Daily TRC monitoring shall
be conducted for the duration of the chlorination and TRC values reported on the monthly discharge
monitoring report. TRC values reported below 50 µg/L are considered to be in compliance with the
Page 17 of 20

Permit NC0021253
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.
b. If the effluent TRC level is anticipated to exceed or exceeds the compliance limit, approved
dechlorination methods shall be employed to meet compliance and ensure protection of water quality
in the receiving stream.
A. (12.) 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 Section 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. Until such time that the state's
eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing,and submitting one signed original and a copy of the computer printed eDMR to the following
address:
NC DEQ/DWR/Water Quality Permitting Section
Attn: Central Files
1617 Mail Service Center
Raleigh,NC 27699-1617
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 mailing address
above. See"How to Request a Waiver from Electronic Reporting" section below.
Page 18 of 20

Permit NC0021253
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, 2020, 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.
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 five (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.
Page 19 of 20

Permit NC0021253
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 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 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 three (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 20 of 20

-' N\ co Instream Sample Locations:
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F S2= 10 ft downstream of diffuser
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USGS Quad: H31 NW Havelock, NC _ _
Latitude Longitude
Facility: 34° 53' 13.7"N, 76° 54' 33.1"W
Outfall: 34° 57' 11" N, 76° 52' 37" W Facility Location
North
Receiving Stream: Neuse River Subbasin: 03-04-10 City of Havelock WWTP, Permit No. NC0021253
Stream Class: SB, Sw,NSW HUC: 03020204 Craven County