WQ0023261_Final Permit_20150609

NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
June 9, 2015
BILLY JOE FARMER — EXECUTNE DIRECTOR
ONSLOW WATER AND SEWER AUTHORITY
228 GEORGETOWN ROAD
JACKSONVILLE, NORTH CAROLINA 28540
Dear Mr. Farmer:
Donald R. van der Vaart
Secretary
Subject: Permit No. WQ0023261
Swansboro WWTF
High -Rate Infiltration System
Onslow County
In accordance with your permit renewal request received February 6, 2015, we are forwarding
herewith Permit No. WQ0023261 dated June 9, 2015, to the Onslow Water and Sewer Authority for the
continued operation of the subject wastewater treatment and high -rate infiltration facilities. Please note
that this renewed permit shall become effective on October 1, 2015 (i.e. the day after the expiration date
of the existing permit).
This permit shall be effective from October 1, 2015 until September 30, 2020, and shall be
subject to the conditions and limitations as specified therein. Please pay particular attention to the
monitoring requirements listed in Attachments A, B and C for they may differ from the previous permit
issuance. Failure to establish an adequate system for collecting and maintaining the required operational
information shall result in future compliance problems.
For your convenience, customized electronic copies of your facility's NDMR and NDAR-2
reporting forms are available for download at: http://portal.ncdenr.org/web/wq./aps/lau/reportiniz.
Please note that the permit type is being changed from a non -conjunctive reclaimed utilization
system to a high -rate infiltration system. This change will be made in name only, and is being done to
correctly identify the system type based on the current 15A NCAC 02T rules. Accordingly, all previously
approved setbacks and limitations will remain unchanged.
Please note the following permit conditions have been removed since the last permit
issuance elated May 28, 2010:
➢ Old Conditions 1.1., 1I.2., I.3., and I4. — These conditions have been removed because the
requirements have already been met.
➢ Old Conditions 1I.6., 1I.7., II.8., WA. and IV.7. -- These conditions have been removed
because the permit type has been changed from a non -conjunctive reclaimed water utilization
system to a high -rate infiltration system.
➢ Old Condition IV.9. — This condition has been removed.
Non -Discharge Permitting Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Intemet: ht01portalmdenr.or lwebhxrJ
An Equal OpporlunitylAffirmativeAction Employer - Made In pars with recycled paper

Mr. Billy Joe Farmer
June 9, 2015
Page 2 of 3
➢ Old Condition IV.13. — This condition has been removed because monitoring wells MW-1,
MW-2 and MW-3 have been installed and sampled.
➢ Old Attachment A. — PPI-002 through PP1-005 regarding water level monitoring have been
removed because water level will be monitored via recording of freeboard instead.
Please note the following permit conditions are new since the last permit issuance dated
May 28, 2010:
➢ Condition 11.6. and II.7. — Regarding establishment of compliance and review boundaries.
➢ Condition 1I.8. — Regarding requirements for permit modification prior to any sale or transfer
of property affecting a compliance boundary.
➢ Condition 11.9. — This condition prohibits construction of a water supply well within the
compliance boundary.
➢ Condition II.10. — Regarding register of deeds requirements if the Permittee is not the owner
of the land within the compliance boundary.
➢ Condition 1II.4. — Automobiles or machinery are not allowed on the infiltration sites except
during equipment installation or while maintenance is being performed.
➢ Condition 111.8. — This condition requires the Permittee to maintain a two foot freeboard in
the four high -rate infiltration basins and the five day upset pond.
➢ Condition III.9. — This condition requires the Permittee to maintain gauges in the four high -
rate infiltration basins and the five day upset pond.
➢ Condition I1I.10. — Requirements for maintenance of a protective vegetative cover on earthen
embankments.
➢ Condition 111.12. —Requirements for dredging/cleaning of infiltration basins.
➢ Condition I11.13. --- Requirements for calibration ofturbidimeter.
➢ Condition IV.6. — This condition requires the Permittee to measure the freeboard in the four
high -rate infiltration basins and the five day upset pond on a weekly basis.
➢ Condition IV.8. — Requirements for an annual report summarizing the performance of the
wastewater treatment and infiltration facility.
➢ Condition IV.9. — Regarding tracking records of residuals removal at the facility.
➢ Condition VI.7. — This condition requires the Permittee to maintain this permit until all
permitted facilities are properly closed or permitted under another permit.
➢ Condition VI.8. -- This condition notes that this permit is subject to revocation or unilateral
modification within 60 days notice from the Division if the terms in 15A NCAC 02T .0110
are violated.
➢ Condition VI.9. — This condition motes that this facilities in this permit may not be expanded
if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b).

Mx. Billy Joe Farmer
June 9, 2015
Page 3 of 3
➢ Attachment A -- Please note that per the Division of Water Resources' Non -Discharge
Permitting Unit Wastewater Monitoring Policy, all non -discharge systems are having their
effluent monitoring schedules reevaluated. Accordingly, the Permittee is no longer required
to sample for Total Organic Carbon (00680) and Settleable Solids (00545). Also, the
sampling frequency for pH (00400) and Total Residual Chlorine (50060) is now 5 x Week,
and Total Nitrogen (00600) and Total Phosphorus (00665) have been added to the sampling
regimen. Please also note that since the permitted flow is greater than 500,000 gallows per
day (GPD), the sampling frequency for a majority of the parameters has increased to 2 x
Week.
➢ Attachment A — Surface water monitoring requirement is now under PPI-002.
If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee
has the right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request shall be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings at 6714 Mail
Service Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and
binding.
If you need additional information concerning this permit, please contact Chonticha McDaniel at
[phone] or ch_onticha.mcdaniel(ir),ncdenr.gov.
Sincerely,
o-,,S. Jay Zimmerman, Director
Division of Water Resources
cc: Onslow County Health Department (Electronic Copy)
Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Central Files
Digital Permit Archive (Electronic Copy)

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ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
HIGH -RATE INFILTRATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Onslow Water and Sewer Authority
On.slow County
FOR THE
continued operation of a 600,000 gallon per day (GPD) wastewater treatment and high -rate infiltration
facility consisting of:
a 123,000 gallon equalization basin; two 22 foot diameter secondary clarifiers with a 12 foot side water
depth; dual rotating cloth disk filters with automatic backwash; an influent flowmeter; a headworks
structure with a 1.5 million gallon per day (MGD) mechanical semi -cylindrical screen with screw
conveyer, a 1.5 MGD vortex grit removal chamber system, and a manual bar screen; an oxidation ditch
flow splitter box; two 300,000 gallon oxidation ditches each with two horizontal 42-inch diameter blade
aeration rotor/motor assemblies, and an adjustable weir plate; an 18-inch transfer pipe with sluice gate
between the two oxidation ditches; a 1,667 gallon per minute (GPM) recycle pump serving the two
ditches; a 32 foot diameter secondary clarifier with a 12 foot side water depth; a clarifier flow splitter box;
an ultraviolet (LTV) disinfection facility consisting of three banks in series (2 duty, l spare); a
turbidimeter; an effluent pump station with three 521 GPM vertical turbine pumps; a three-way control
effluent valve; an effluent magnetic flowmeter; a 4.28 million gallon (MG) 5-day upset pond lined with
60 millimeter (mm) HDPE synthetic liner; a 5-day upset pond pump station with a 210 GPM pump; a
recycled activated sludge (RAS) / waste activated sludge (WAS) pump station with two 520 GPM pumps;
a chlorination feed system for internal facility algae maintenance; a 46,900 gallon sludge digester with a
500 GPM sludge transfer pump; a 315,000 gallon sludge holding stainless steel tank with fine bubble
diffusers, two 806 cubic feet per minute (CFM) blowers, a sludge truck loading station with a 500 GPM
sludge transfer pump; a 350 kilowatt (kW) emergency generator with an automatic transfer switch; four
renovated sand filter -drying beds for additional dewatering capacity; approximately 32,200 linear feet
(LF) of 12-inch effluent force main;
a 5.0 acre high -rate infiltration basin (Basin 41); a 2.88 acre high -rate infiltration basin (Basin #2A); a
3.88 acre high -rate infiltration basin (Basin #213); a 3.48 acre high -rate infiltration basin (Basin #3); a
groundwater lowering system; and all associated piping, valves, controls and appurtenances
to serve the Swansboro WWTF, with no discharge of wastes to surface waters, pursuant to the application
received February 6, 2015, and in conformity with the project plans, specifications, and other supporting
data subsequently filed and approved by the Department of Environment and Natural Resources and
considered a part of this permit.
This permit shall be effective from October 1, 2015 until September 30, 2020, and shall be subject to the
following specified conditions and limitations:
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L SCHEDULES
No later than six months prior to the expiration of this permit, the Permittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal
application. [15A NCAC 02T .0105(d), 02T .0106, 02T .0109, 02T .01.15(c)]
I.I. PERFORMANCE STANDARDS
The subject non -discharge facilities shall be effectively maintained and operated at all times so there
is no discharge to surface waters, nor any contravention of groundwater or surface water standards.
In the event the facilities fail to perform satisfactorily, including the creation of nuisance conditions
due to improper operation and maintenance, or failure of the infiltration areas to adequately assimilate
the effluent, the Permittee shall take immediate corrective actions including Division required actions,
such as the construction of additional or replacement wastewater treatment or infiltration facilities.
[G.S. 143-215.1, 143-213.3(a)]
2. This permit shall not relieve the Permittee of their responsibility for damages to groundwater or
surface water resulting from the operation of this facility. [15A NCAC 02B .0200, 02L .0100]
3. All wells constructed for purposes of groundwater monitoring shall be constructed in accordance with
15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water Supply), and any other
jurisdictional laws and regulations pertaining to well construction. [15A NCAC 02C .0108]
4. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T
.0108(b)(1)]
5. Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B.
6. This disposal system was individually permitted on or after December 30, 1983; therefore, the
compliance boundary is established at either 250 feet from the effluent disposal area, or 50 feet within
the property boundary, whichever is closest to the effluent disposal area. An exceedance of
groundwater standards at or beyond the compliance boundary is subject to remediation action
according to 15A NCAC 02L .0106(d)(2) as well as enforcement actions in accordance with North
Carolina General Statute 143-215.6A through 143-215.6C. [15A NCAC 02L ,0106(d)(2), 02L
.0107(b)]
7. In accordance with 15A NCAC 02L .0108, the review boundary is established midway between the
compliance boundary and the effluent disposal area. Any exceedance of groundwater standards at the
review boundary shall require action in accordance with 15A NCAC 02L .0106. [15A NCAC 02L
.0106, 02L .0108]
8. The Permittee shall apply for a permit modification to establish a new compliance boundary prior to
any sale or transfer of property affecting a compliance boundary. [ 15A NCAC 02L .0107(c)]
9. In accordance with 15A NCAC 02L .0107(d), no wells, excluding Division approved monitoring
wells, shall be constructed within the compliance boundary except as provided for in 15A NCAC 02L
.0107(g). [ 15A NCAC 02L .0107]
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10. Except as provided for in 15A NCAC 02L .0107(g), the Permittee shall ensure any landowner who is
not the Permittee and owns land within the compliance boundary shall execute and file with the
Onslow County Register of Deeds an easement running with the land containing the following items:
a. A notice of the permit and number or other description as allowed in 15A NCAC 02L .0107(f)(1);
b. Prohibits construction and operation of water supply wells within the compliance boundary; and
c. Reserves the right of the Permittee or the State to enter the property within the compliance
boundary for purposes related to the permit
The Director may terminate the easement when its purpose has been fulfilled or is no longer needed
[15A NCAC 02L .0107(f)]
11. The facilities permitted herein shall be constructed according to the following setbacks:
a. The setbacks for high -rate infiltration sites originally permitted as non -conjunctive reclaimed
water utilization sites under 15A NCAC 02H .0219(k) shall be as follows (all distances in feet):
i. Surface waters not classified SA: 25
ii. Surface waters classified SA: 100
iii. Any well with exception to monitoring wells 100
[15A NCAC 02T .0706]
b. The setbacks for storage and treatment units permitted under 15A NCAC 02H .0200 shall be as
follows (all distances in feet):
L Any well with exception of monitoring wells: 100
ii. Any property line: 50
[I5ANCAC 02T .0706(d)]
III. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times. The facilities shall be effectively
maintained and operated as a non -discharge system to prevent the discharge of any wastewater
resulting from the operation of this facility. The Permittee shall maintain an Operation and
Maintenance Plan, which at a minimum shall include operational functions, maintenance schedules,
safety measures and a spill response plan. [15A NCAC 02T .0707]
2. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC)
classification of the subject non -discharge facilities, in accordance with 15A NCAC 08G .0200 the
Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or
more certified operator(s) as back-up ORC(s). The ORC or their back-up shall visit the facilities in
accordance with 15A NCAC 08G .0200, and shall comply with all other conditions specified in the
previously cited rules. [ 15A NCAC 02T .0117]
3. Only effluent from the Swansboro WWTF shall be infiltrated on the sites listed in Attachment B.
[G.S. 143-215.1]
4. No automobiles or machinery shall be allowed on the infiltration sites except during equipment
installation or while maintenance is being performed. [15A NCAC 02T .0108(b)(1)]
5. Public access to the infiltration sites and wastewater treatment facilities shall be prohibited. [15A
NCAC 02T .0705(p)]
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6. The residuals generated from the wastewater treatment facilities shall be disposed or utilized in
accordance with 15A NCAC 02T .I 100. The Permittee shall maintain a residual management plan
pursuant to 15A NCAC 02T .0708. [15A NCAC 02T .0708, 02T .1100]
7. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is
prohibited. [15A NCAC 02T .0705(i)]
8. Freeboard in the four high -rate infiltration basins and the five day upset pond shall not be less than
two feet at any time. [15A NCAC 02T A705(c)]
9. Gauges to monitor waste levels in the four high -rate infiltration basins and the five day upset pond
shall be provided. These gauges shall have readily visible permanent markings, at inch or tenth of a
foot increments, indicating the following elevations: maximum liquid level at the. top of the temporary
liquid storage volume; minimum liquid level at the bottom of the temporary liquid storage volume;
and the lowest point on top of the dam. [ 15A NCAC 02T .0108(b)(1)]
10. A protective vegetative cover shall be established and maintained on all earthen embankments (i.e.,
outside toe of embankment to maximum allowable temporary storage elevation on the inside of the
embankment), berms, pipe runs, erosion control areas, and surface water diversions. Trees, shrubs,
and other woody vegetation shall not be allowed to grow on the earthen dikes or embankments.
Earthen embankment areas shall be kept mowed or otherwise controlled and accessible. [ 15A NCAC
02T .0108(b)(1)]
11. All effluent shall be routed to the five day upset pond should the limit for fecal coliforrn (e.g., daily
maximum concentration of 25 colonies per 100 mL) or turbidity (e.g., instantaneous maximum of 10
NTU) be exceeded, until the problems associated with the wastewater treatment plant have been
corrected. The wastewater in the five day upset pond shall be pumped back to the treatment plant
headworks for re -treatment or treated in the five day upset pond prior to infiltration. [I 5A NCAC
02T .0108(b)(1)]
12. The infiltration basins shall be periodically dredged to remove deposited materials that may impede
the infiltration process. Cleaning records shall be maintained at the facility for a period of no less
than five years, and shall be made available to the Division upon request. The Wilmington Regional
Office, telephone number [phone], shall be notified prior to each cleaning, [ 15A NCAC 02T
.0108(b)(1)]
13. The turbidimeter shall be tested and calibrated at a minimum of once per year. Calibration records
shall be maintained at the facility for a period of no less than five years, and shall be made available
to the Division upon request. [15A NCAC 02T .0108(b)(1)]
IV. MONITORING AND REPORTING REQUIREMENTS
1. Any Division required monitoring (including groundwater, plant tissue, soil and surface water
analyses) necessary to ensure groundwater and surface water protection shall be established, and an
acceptable sampling reporting schedule shall be followed. [ 15A NCAC 02T .0108(c)]
2. A Division certified laboratory shall conduct all laboratory analyses for the required effluent,
groundwater or surface water parameters. [ 15A NCAC 02H .0800]
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3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be
reported on Form NDMR.
The Permittee shall install and maintain an appropriate flow measurement device to ensure the
accuracy and reliability of flow measurement consistent with accepted engineering and scientific
practices. Selected flow measurement devices shall be capable of measuring flows with a maximum
deviation of less than ten percent from true flow; accurately calibrated at a minimum of once per year;
and maintained to ensure the accuracy of measurements is consistent with the selected device's
accepted capability. The Permittee shall maintain records of flow measurement device calibration on
file for a period of at least five years. At a minimum, documentation shall include:
a. Date of flow measurement device calibration,
b. Name of person performing calibration, and
c. Percent from true flow.
[15A NCAC 02T .0105(k)]
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A. [15A NCAC 02T .0108(c)]
5. The Permittee shall maintain adequate records tracking the amount of effluent infiltrated. At a
minimum, these records shall include the following information for each infiltration site listed in
Attachment B:
a. Date of infiltration;
b. Volume of effluent infiltrated;
c. Site infiltrated;
d. Loading rates to each infiltration site listed in Attachment B; and
e. Weather conditions.
[15A NCAC 02T .0108(c)]
6. Freeboard (i.e., waste level to the lowest embankment elevation) in the four high -rate infiltration
basins and the five day upset pond shall be measured to the nearest inch or tenth of a foot, and
recorded weekly. Weekly freeboard records shall be maintained at the facility for a period of no less
than five years, and shall be made available to the Division upon request. [ 15A NCAC 02T .0108(c)]
7. Three copies of all monitoring data (as specified in Conditions IV.3. and IVA.) on Form NDMR for
each PPI and three copies of all operation and disposal records (as specified in Conditions N.5. and
IV.6.) on Form NDAR-2 for every site in Attachment B shall be submitted on or before the last day of
the following month. If no activities occurred during the monitoring month, monitoring reports are
still required documenting the absence of the activity. All information shall be submitted to the
following address:
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[15A NCAC 02T .0105(1)]
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8. Pursuant to § 143-215.1C., the Permttee shall provide to its users and the Division of Water
Resources an annual report summarizing the performance of the wastewater treatment and infiltration
facility and the extent to which the facility has violated this permit, or federal or State laws,
regulations, or rules related to the protection of water quality. This report shall be prepared on either
a calendar or fiscal year basis and shall be provided no later than 60 days after the end of the calendar
or fiscal year. Two copies of the annual report provided to the Permittee's users shall be submitted
to:
Division of Water Resources
Water Quality Permitting Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[G.S. 143-215.1C]
9. A record shall be maintained of all residuals removed from this facility. This record shall be
maintained at the facility for a period of no less than five years, and shall be made available to the
Division upon request. At a minimum, this record shall include:
a. Name of the residuals hauler;
b. Non -Discharge permit number authorizing the residuals disposal, or a letter from a municipality
agreeing to accept the residuals;
c. Date the residuals were hauled; and
d. Volume of residuals removed.
[I5A NCAC 02T .0I08(b)(1)]
10. A maintenance log shall be maintained at this facility. This log shall be maintained at the .facility for
a period of no less than five years, and shall be made available to the Division upon request. At a
minimum, this log shall include:
a. Date and results of power interruption testing on alternate power supply;
b. Date of calibration of flow measurement device;
c. Date of calibration of turbidimeter;
d. Visual observations of the plant and plant site; and
e. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing,
inspections and cleanings, etc.).
[I5A NCAC 02T .0108(b)(1)]
11. Monitoring wells shall be sampled at the frequencies and for the parameters specified in Attachment
C. All maping, well construction forms well abandonment forms and monitorinj4 data shall refer to
the permit number and the well nomenclature as provided in Attachment Can_d Figures 1, 2, and 3
[15A NCAC 02T .0105(m)]
12. Two copies of the monitoring well sampling and analysis results shall be submitted on a Compliance
Monitoring Form (GW-59), along with attached copies of laboratory analyses, on or before the last
working day of the month following the sampling month. The Compliance Monitoring Form (GW-
59) shall include this permit number, the appropriate well identification number, and one GW-59a
certification form shall be submitted with each set of sampling results. All information shall be
submitted to the following address:
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[15A NCAC 02T .0105(m)]
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13. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910)
796-7215, as soon as possible, but in no case more than 24 hours, or on the next working day
following the occurrence or first knowledge of the occurrence of any of the following:
a. Treatment of wastes abnormal in quantity or characteristic, including the known passage of a
hazardous substance.
b. Any process unit failure (e.g., mechanical, electrical, etc.), due to known or unknown reasons,
rendering the facility incapable of adequate wastewater treatment.
c. Any facility failure resulting in a by-pass directly to receiving surface waters.
d. Any time self -monitoring indicates the facility has gone out of compliance with its permit
limitations.
e. Effluent breakout from the infiltration basins.
Any emergency requiring immediate reporting (e.g., discharges to surface waters, imminent failure of
a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency
Response personnel at telephone number [phone], [phone], or [phone].
Persons reporting such occurrences by telephone shall also file a written report in letter form within
five days following first knowledge of the occurrence. This report shall outline the actions taken or
proposed to be taken to ensure the problem does not recur. [15A NCAC 02T .0105(1), 02T
.0108(b)(1)]
V. INSPECTIONS
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and infiltration facilities. [I5A NCAC 02T .0108(b)]
The Permittee or their designee shall inspect the wastewater treatment and infiltration facilities to
prevent malfunctions, facility deterioration and operator errors resulting in discharges, which may
cause the release of wastes to the environment, a threat to human health or a public nuisance. The
Permittee shall maintain an inspection log that includes, at a minimum, the date and time of
inspection, observations made, and any maintenance, repairs, or corrective actions taken. The
Permittee shall maintain this inspection log for a period of five years from the date of the inspection,
and this log shall be made available to the Division upon request. [15A NCAC 02T .0108(b)]
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the wastewater treatment and infiltration facilities
permitted herein at any reasonable time for the purpose of determining compliance with this permit;
may inspect or copy any records required to be maintained under the terms and conditions of this
permit, and may collect groundwater, surface water or leachate samples. [G.S. 143-21.53(a)(2)]
VI. GENERAL CONDITIONS
1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to
an enforcement action by the Division in accordance with North Carolina General Statutes 143-
215.6A to 143-215.6C. [G.S. 143-215.6A to 143-215.6C]
2. This permit shall become voidable if the permitted facilities are not constructed in accordance with
the conditions of this permit, the Division approved plans and specifications, and other supporting
documentation. [15A NCAC 02T .0110]
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3. This permit is effective only with respect to the nature and volume of wastes described in the permit
application, Division approved plans and specifications, and other supporting documentation. No
variances to applicable rules governing the construction or operation of the permitted facilities are
granted, unless specifically requested and approved in this permit pursuant to 15A NCAC 02T
.0105(n). [G.S. 143-21.5.11
4. The issuance of this permit does not exempt the Permittee from complying with any and all statutes,
rules, regulations, or ordinances, which may be imposed by other jurisdictional government agencies
(e.g., local, state, and federal). Of particular concern to the Division are applicable river buffer rules
in 15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4
and under General Permit NCG010000; any requirements pertaining to wetlands under 15A NCAC
02B .0200 and 02H .0500; and documentation of compliance with Article 21 Part 6 of Chapter 143 of
the General Statutes. [15A NCAC 02T .0105(c)(6)]
5. In the event the permitted facilities change ownership or the Permittee changes their name, a formal
permit modification request shall be submitted to the Division. This request shall be made on official
Division forms, and shall include appropriate property ownership documentation and other supporting
documentation as necessary. The Permittee of record shall remain fully responsible for maintaining
and operating the facilities permitted herein until a permit is issued to the new owner. [15A NCAC
02T .0104]
The Permittee shall retain a set of Division approved plans and specifications for the life of the
facilities permitted herein. [15A NCAC 02T .0108(b)(1)]
The Permittee shall maintain this permit until all permitted facilities herein are properly closed or
permitted under another permit issued by the appropriate permitting authority. [15A NCAC 02T
.01050)]
8. This permit is subject to revocation or unilateral modification upon 60 days notice from the Division
Director, in whole or part for the requirements listed in 15A NCAC 02T ..0110. [15A NCAC 02T
.0110]
9. Unless the Division Director grants a variance, expansion of the permitted facilities contained herein
shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b). [15A
NCAC 02T .0120]
10. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to
pay the annual fee accordingly shall because for the Division to revoke this permit. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 9ffi day of June 2015
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Jay Zimmerman, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0023261
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ATTACHMENT A — LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001— WWTF Effluent
Permit Number: WQ0023261 Version: 2.0
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PCs
Code
Parameter Description
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
Measurement
Frequency
Sample
"Type
00310
BOD, 5-Day (20 °C)
mg/L
10
15
2 x Week
Composite
00940
Chloride (as Cl)
mg/L
3 x Year
Composite
50060
Chlorine, Total Residual
mg/L
5 x Week
Grab
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
#f/100 ML
14
25
2 x Week
Grab
50050
Flow, in Conduit or thru Treatment Plant
GPD
600,000
Continuous
Recorder
00610
Nitrogen, Ammonia Total (as N)
mg/L
4
6
2 x Week
Composite
00625
Nitrogen, Kjeldahl, Total (as N)
mg/L
2 x Week
Composite
00620
Nitrogen, Nitrate Total (as N)
mg/L
2 x Week
Composite
00600
Nitrogen, Total (as N)
mg/L
2 x Week
Composite
00400
pH
su
6
9
5 x Week
Grab
00665
Phosphorus, Total (as P)
mg/L
2 x Week
Composite
70300
Solids, Total Dissolved -- 180 °C
mg/L
3 x Year'
Composite
00530
Solids, Total Suspended
mg/L
5
10
2 x. Week
Composite
00076
Turbidity, HCH Turbidimeter
NTU
10
Continuous
Recorder
1. 3 x Year sampling shall occur in March, July and November.
WQ0023261 Version 2.0 Attachment A Page 1 of 2

ATTACHMENT A — LIMITATIONS AND MONITORING REQUIREMENTS
PPI 002 — Surface Water Sampling (SW-1)
Permit Number: WQ0023261 Version: 2.0
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PCS
Code
Parameter Description
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
Measurement
Frequency
Sample
Type
00680
Carbon, Tot Organic (TOC)
mg/L
3 x Year
Grab
00940
Chloride (as Cl)
mg/L
3 x Year
Grab
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
41100 mL
3 x Year
Grab
00610
Nitrogen, Ammonia Total (as N)
mg/L
3 x Year
Grab
00620
Nitrogen, Nitrate Total (as N)
mg/L
3 x Year
Grab
00400
pH
su
3 x Year
Grab
00665
Phosphorus, Total (as P)
mg/L
3 x Year
Grab
70300
Solids, Total Dissolved - 180 °C
mg/L
3 x Year
Grab
L 3 x Year sampling shall occur in March, July and November.
WQ0023261 Version 2.0 Attachment A Page 2 of 2

ATTACHMENT B - APPROVED LOW RATE INFILTRATION BASINS AND LIMITATIONS Permit Number: WQ0023261 Version: 2.0
Onslow Water and Sewer Authority — Swansboro WWTF
INFILTRATION AREA INFORMATION
APPLICATION LIMITATIONS
Basin
Owner
County
Latitude
Longitude
Net
Acrea a
Dominant
Soil Series
Parameter
Rate
Units
1
Town of Swansboro
Onslow
34.729722
-77,207222
5.00
Baymeade
01284 — Non -Discharge Application Rate
0.9044
GPD/ft2
2A
Town of Swansboro
Onslow
34.7258.33
-77.205000
2.88
Baymeade
01284 —Non-Discharge Application Rate
0.9044
GPD/f�
2B
Town of Swansboro
Onslow
34.725556
-77.206389
3.88
Baymeade
01284 — Non -Discharge Application Rate
0.9044
GPD/f�
3
Town of Swansboro
Onslow
34.725556
-77.210833
3.48
Baymeade
01284 —Non-Discharge Application Rate
0.9044
GPD/ft�
Totals
15.24
WQ0023261 Version 2.0 Attachment B Page 1 of 1

THIS PAGE BLANK

ATTACHMENT C — GROUNDWATER MONITORING AND LIMITATIONS
Monitoring wells: MW-1, MW-2 and MW-3
Permit Number: WQ0023261 Version: 2,0
GROUNDWATER CHARACTERISTICS
GROUNDWATER STANDARDS
MONITORING REQUIREMENTS
PCS Code
Parameter Description
Daily Maximum
Frequency Measurement
Sample Type
Footnotes
82546
Water Level, Distance from measuring point
feet
3 x Year
Calculated
1, 2, 3
00680
Carbon, Tot Organic (TOC)
mg/L
3 x Year
Grab
1,6
00940
Chloride (as Cl)
250
mg/L
3 x Year
Grab
1
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
41100 mL
3 x Year
Grab
I
00610
Nitrogen, Ammonia Total (as N)
1.5
mg/L
3 x Year
Grab
l
00620
Nitrogen, Nitrate Total (as N)
10
mg/L
3 x Year
Grab
1
00400
pH
6.5-8.5
su
3 x Year
Grab
1,2
00665
Phosphorus, Total (as P)
mg/L
3 x Year
Grab
1
70300
Solids, Total Dissolved - 180 °C
500
mg/L
3 x Year
Grab
1
GWVOC
Volatile Compounds (GC/MS)
Present: Yes/No
Annually
Grab
L4,5
1. 3 x Year monitoring shall be conducted in March, July & November; Annual monitoring shall be conducted every November.
2. The measurement of water levels shall be made prior to purging the wells. The depth to water in each well shall be measured from the surveyed point on the top of the casing. The measurement
of pH shall be made after purging and prior to sampling for the remaining parameters.
3. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. The measuring points (top
of casing) of all monitoring wells shall be surveyed relative to a common datum.
4. Volatile Organic Compounds (VOC) - In November only, analyze by one of the following methods:
a_ Standard Method 6230D, PQL at 0.5 µg/L or less
b. Standard Method 6210D, PQL at 0.5 µg/L or less
c. EPA Method 8021, Low Concentration, PQL at 0.5 µg/L or less
d. EPA Method 8260, Low Concentration, PQL at 0.5 leg/L or less
e. Another method with prior approval by the Water Quality Permitting Section Chief
Any method used must meet the following qualifications:
a. A laboratory must be DWR certified to run any method used.
b. The method used must, at a minimum, include all the constituents listed in Table VIII of Standard Method 6230D.
c. The method used must provide a PQL of 0.5 µg/L or less that must be supported by laboratory proficiency studies as required by DWR. Any constituents detected above the MDL but below
the PQL of 0.5 µg/L must be qualified (estimated) and reported.
5. If any volatile organic compounds (VOC) are detected as a result of monitoring as provided in Attachment C, then the Wilmington Regional Office supervisor, telephone number [phone],
must be contacted immediately for further instructions regarding any additional follow-up analyses required.
6. If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring well, additional sampling and analysis must be conducted to identify the individual constituents
comprising this TOC concentration_ If the TOC concentration as measured in the background monitor well exceeds I0 mg/l, this concentration will be taken to represent the naturally occurring
TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampling and analysis as described above.
7. Monitoring well sampling shall be reported consistent with the nomenclature and location information provided in Figures 1, 2, 3 and this attachment.
WQ0023261 Version 2.0 Attachment C Page 1 of 1

ME INL
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