WQ0034367_Final Permit_20220701

July 1, 2022
D AVID M. M OHR, PE C HIEF O PERATIONS O FFICER
O NSLOW W ATER AND S EWER A UTHORITY
228 G EORGETOWN R OAD
J ACKSONVILLE, N ORTH C AROLINA 28540
Subject: Permit No. WQ0034367
Northwest Regional WWTP
High-Rate Infiltration System
Onslow County
Dear Mr. Mohr:
In accordance with your permit renewal request received April 7, 2022, we are forwarding herewith
Permit No. WQ0034367 dated July 1, 2022, to Onslow Water and Sewer Authority for the continued
operation of the subject wastewater treatment and high-rate infiltration facilities.
The following modifications to the subject permit are as follows: the reclaimed water generation
and bulk distribution facilities have been removed from the facility description and Attachment A. Permit
requirements associated with reclaimed water generation and bulk distribution have also been removed.
This permit shall be effective from the date of issuance through February 28, 2029, shall replace
Permit No. WQ0034367 issued March 20, 2020, and shall be subject to the conditions and limitations
therein. The Permittee shall submit a renewal application no later than September 1, 2029.
Please pay attention to the monitoring requirements listed 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.
The Division has removed the following permit conditions since the last permit issuance dated
March 20, 2020:
Old Condition I.1 This condition has been removed because the Engineering Certification
was received July 1, 2022.
Old Condition I.2 This condition has been removed because installed modifications have
been inspected.
Old Condition I.3 This condition has been removed because the Final Operation and
Maintenance Plan was received July 1, 2022.
Old Condition I.4 This condition has been removed because reclaimed water bulk distribution
has been removed from this permit.
Old Condition II.1 This condition has been revised as the facility no longer operates a
reclaimed water program.

Mr. David M. Mohr, PE
July 1, 2022
Page 2 of 2

Old Conditions II.6-11, 14 These conditions have been removed as the facility no longer
operates a reclaimed water program.
Old Conditions III.4, 7, 10, 21-29 These conditions have been removed as the facility no
longer operates a reclaimed water program.
Old Condition IV.4 This condition has been revised as the facility no longer operates a
reclaimed water program.
Old Conditions IV.5, 14.(c), 14.(e) These conditions have been removed as the facility no
longer operates a reclaimed water program.
Old Condition V.3 This condition has been revised as the facility no longer operates a
reclaimed water program.
Old Condition V.4 This condition has been removed as the facility no longer operates a
reclaimed water program.
Attachment A, PPI 005 Monitoring requirements for reclaimed water have been removed.
The following permit conditions are new since the last permit issuance dated March 20, 2020:
Condition III.10 This condition is required as a portion of the facility falls within the 100-
year flood plain.
Attachment A, PPI 001 Monitoring requirements for the wastewater treatment plant effluent
have been revised to match the requirements in 15A NCAC 02T .0705.
Attachment A, PPI 002 Monitoring requirements for groundwater lowering system effluent
parameters have been reduced to 3 x Year.
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. Otherwise, this permit shall be final and binding.
If you need additional information concerning this permit, please contact Lauren Raup-Plummer at
[phone] or [e-mail].
Sincerely,
Richard E. Rogers, Jr., Director
Division of Water Resources
cc: Onslow County Health Department (Electronic Copy)
Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Patrick Beggs Protection and Enforcement Branch (Electronic Copy)
Laserfiche File (Electronic Copy)
Digital Permit Archive (Electronic Copy)

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
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
Onslow County
FOR THE
operation of a 1,272,973 gallon per day (GPD) wastewater treatment and high-rate infiltration facility
consisting of the:
continued operation of a 2,000,000 GPD wastewater treatment facility consisting of: a plant drain pump
station with two 1,400 gallon per minute (GPM) submersible pumps; an influent flow meter; one fine screen
grit removal system served by two 1.3 cubic foot per minute (CFM) positive displacement blowers; a bypass
manually-cleaned coarse screen; a flow splitter box; an influent composite sampler; two 1,830,000 gallon
sequencing batch reactors (SBRs) served by five 1,156 CFM positive displacement blowers, three 9,886
GPM axial flow jet motive pumps, an SBR influent transfer pump station with two 3,400 GPM centrifugal
pumps, and a waste activated sludge (WAS) pump station with three 516 GPM centrifugal pumps; two
614,000 gallon aerobic sludge digesters served by three 780 CFM positive displacement blowers, a WAS
flow meter, one 4,395 GPM jet-motive mixing pump, two 350 GPM centrifugal sludge transfer pumps, two
250 GPM submersible supernatant pumps, and a supernatant flow meter; an 822,000 gallon post flow
equalization basin with two 4,943 GPM jet motive mixing pumps and three 1,400 GPM centrifugal transfer
pumps; a post flow equalization basin flow meter; two tertiary disc filter units with one 5,000 GPM
backwash water supply tank, two 98 GPM primary backwash pumps, and two 98 GPM auxiliary backwash
pumps; a 3,472 GPM ultraviolet (UV) disinfection system consisting of a 1,000 gallon open-vessel UV
tank with three banks in series each containing 32 UV lamps per bank (96 lamps total); a 75,000 gallon
chlorine contact basin served by a 2,500 gallon sodium hypochlorite tank with two 30 gallon per hour
(GPH) peristaltic chemical metering pumps; an 11,500 gallon effluent pump station with three 1,850 GPM
submersible pumps; an effluent residual chlorine analyzer; an effluent sampler with a hose pump; a
turbidimeter; a 1,500 kilowatt (kW) automatically activated auxiliary generator; an alum feed system with
a 7,000 gallon tank and three 40 GPH peristaltic chemical metering pumps; a sodium hydroxide feed system
with a 10,000 gallon tank and three 40 GPH peristaltic chemical metering pumps; a micro-C glycerin feed
system with a 10,000 gallon tank and two 40 GPH peristaltic chemical metering pumps; two synthetically-
lined 5-day upset basins served by the aforementioned plant drain pump station with both basins having an
effective volume of 2,734,829 gallons; and all associated piping, valves, controls, and appurtenances; the
continued operation of a non-potable reuse system for internal use within the treatment plant works deemed
permitted pursuant to under 15A NCAC 02U .0113(a)(16) and consisting of: two 170 GPM submersible
pumps; two 800-gallon steel hydropneumatic tanks; and all associated piping, valves, controls, and
appurtenances; the
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continued operation of a 1,272,973 GPD high-rate infiltration system consisting of: four effluent flow
meters each serving an individual high-rate infiltration basin; high-rate infiltration basin A with an
2
infiltrative area of 2.365 acres and a loading rate of 8.736 gallons per day per square foot (GPD/ft); high-
2
rate infiltration basin B with an infiltrative area of 1.725 acres and a loading rate of 3.286 GPD/ft; high-
2
rate infiltration basin C with an infiltrative area of 1.725 acres and a loading rate of 0.720 GPD/ft; high-
2
rate infiltration basin D with an infiltrative area of 1.174 acres and a loading rate of 1.407 GPD/ft; and all
associated piping, valves, controls, and appurtenances; and the
continued operation of a 482,632 GPD groundwater lowering system consisting of: approximately 333,500
linear feet (LF) of continuous 6-inch slotted HDPE pipe enclosing all four high-rate infiltration basins and
450 GPM submersible pumps and a flow meter; a groundwater detention pond with an overflow swale; and
all associated piping, valves, controls, and appurtenances
to serve the Northwest Regional WWTP, with no discharge of wastes to surface waters, pursuant to the
application received April 7, 2022, and in conformity with the Division-approved plans and specifications
considered a part of this permit.
This permit shall be effective from the date of issuance through February 28, 2029, shall replace Permit
No. WQ0034367 issued March 20, 2020, and shall be subject to the following conditions and limitations:
I. SCHEDULES
1. The Permittee shall request renewal of this permit on Division-approved forms no later than September
1, 2028. \[15A NCAC 02T .0105(b), 02T .0109\]
II. PERFORMANCE STANDARDS
1. The Permittee shall maintain and operate the subject non-discharge facilities 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 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 disposal facilities. \[15A NCAC 02T
.0108(b)(1)(A)\]
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. \[15A NCAC 02T .0108(b)(1)(A)\]
3. Groundwater monitoring wells 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. \[15A NCAC 02T .0705(b)\]
5. Application rates, whether hydraulic, nutrient, or other pollutant, shall not exceed those specified in
Attachment B. \[15A NCAC 02T .0705(m)\]
6. High-rate infiltration sites permitted on or after December 30, 1983 have a compliance boundary that
is either 250 feet from the infiltration area, or 50 feet within the property boundary, whichever is closest
to the infiltration area. Any exceedance of groundwater standards at or beyond the compliance
boundary shall require corrective action. Division-approved relocation of the compliance boundary
shall be noted in Attachment B. Multiple contiguous properties under common ownership and
permitted for use as a disposal system shall be treated as a single property with regard to determination
of a compliance boundary. \[15A NCAC 02L .0106(d)(2), 02L .0107(b), 02T .0105(h), G.S. 143-
215.1(i), G.S. 143-215.1(k)\]
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7. The review boundary is midway between the compliance boundary and the infiltration area. Any
exceedance of groundwater standards at or beyond the review boundary shall require preventative
action. \[15A NCAC 02L .0106(d)(1), 02L .0108\]
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 (i.e., parcel subdivision). \[15A NCAC
02L .0107(c)\]
9. No wells, excluding Division-approved monitoring wells, shall be constructed within the compliance
boundary except as provided for in 15A NCAC 02L .0107(g). \[15A NCAC 02L .0107\]
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.
\[15A NCAC 02L .0107(f)\]

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11. The facilities herein were permitted per the following setbacks:
a. The infiltration sites B, C, and D were modified December 7, 2012 and infiltration site A was
modified September 30, 2015. The setbacks for infiltration sites originally permitted or modified
from September 1, 2006 to August 31, 2018 and meeting the October 27, 2006 High-Rate
Infiltration Policy are as follows (all distances in feet):
1
i. Each habitable residence or place of assembly under separate ownership: 100
ii. Each habitable residence or place of assembly owned by the Permittee: 50
iii. Each private or public water supply source: 100
4
iv. Surface waters: 100
4
v. Groundwater lowering ditches: 100
vi. Surface water diversions: 50
vii. Each well with exception of monitoring wells: 100
2, 3
viii. Each property line: 50
ix. Top of slope of embankments or cuts of two feet or more in vertical height: 100
x. Each water line: 10
4
xi. Subsurface groundwater lowering drainage systems: 100
xii. Each swimming pool: 100
xiii. Public right of way: 50
xiv. Nitrification field: 20
xv. Each building foundation or basement: 15
xvi. Each impounded public surface water supply: 500
xvii. Each public shallow ground water supply (less than 50 feet deep): 500
1
Habitable residences or places of assembly under separate ownership constructed after the
facilities herein were originally permitted or subsequently modified are exempt from this
setback.
2
Setbacks to property lines are not applicable when the Permittee, or the entity from which the
Permittee is leasing, owns both parcels separated by the property line.
3
Per setback waivers recorded in the Onslow County Register of Deeds, reduced setbacks from
the wetted area to any property line are as follows:
Parcel No. Deed Book / Page Setback Easement
444103027242 4317 / 467-469 0 feet 50 feet
444103220913 4317 / 464-466 0 feet 50 feet
4
Setbacks to surface waters, groundwater lowering ditches, and subsurface groundwater
lowering drainage systems have been reduced from 200 to 100 feet because the treatment units
are designed to meet a Total Nitrogen of 7 mg/L and a Total Phosphorus of 3 mg/L.
\[15A NCAC 02T .0706(a), 02T .0706(b), 02T .0706(e), 02T .0706(f), 02T .0706(g)\]

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b. The storage and treatment units were modified December 7, 2012. The setbacks for storage and
treatment units originally permitted or modified from September 1, 2006 to August 31, 2018 are as
follows (all distances in feet):
1
i. Each habitable residence or place of assembly under separate ownership: 100
ii. Each private or public water supply source: 100
iii. Surface waters: 50
iv. Each well with exception of monitoring wells: 100
2, 3
v. Each property line: 50
1
Habitable residences or places of assembly under separate ownership constructed after the
facilities herein were originally permitted or subsequently modified are exempt from this
setback.
2
Setbacks to property lines are not applicable when the Permittee, or the entity from which the
Permittee is leasing, owns both parcels separated by the property line.
3
Per setback waivers recorded in the Onslow County Register of Deeds, reduced setbacks from
the storage and treatment units to any property line are as follows:
Parcel No. Deed Book / Page Setback Easement
444103027242 4317 / 467-469 0 feet 50 feet
444103220913 4317 / 464-466 0 feet 50 feet
\[15A NCAC 02T .0706(d), 02T .0706(e), 02T .0706(f), 02T .0706(g)\]
III. OPERATION AND MAINTENANCE REQUIREMENTS
1. The Permittee shall operate and maintain the subject facilities as a non-discharge system. \[15A NCAC
02T .0700\]
2. The Permittee shall maintain an Operation and Maintenance Plan, which shall include operational
functions, maintenance schedules, safety measures, and a spill response plan. \[15A NCAC 02T
.0707(a)\]
3.
classification of the subject non-discharge facilities, the Permittee shall designate and employ a certified
operator in responsible charge (ORC), and one or more certified operators as back-up ORCs. The ORC
or their back-up shall operate and visit the facilities as required by the WPCSOCC. \[15A NCAC 02T
.0117\]
4. Infiltration equipment shall be tested and calibrated once per permit cycle. \[15A NCAC 02T .0707(d)\]
5. Only treated effluent from the Northwest Regional WWTP shall be infiltrated on the sites listed in
Attachment B. \[15A NCAC 02T .0701\]
6. The Permittee shall not allow vehicles or heavy machinery on the infiltration area, except during
equipment installation or maintenance activities. \[15A NCAC 02T .0707(e)\]
7. The Permittee shall prohibit public access to the wastewater treatment, storage, and infiltration
facilities. \[15A NCAC 02T .0705(p)\]
8. The Permittee shall dispose or utilize generated residuals in a Division-approved manner. \[15A NCAC
02T .0708, 02T .1100\].
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9. The Permittee shall not divert or bypass untreated or partially treated wastewater from the subject
facilities. \[15A NCAC 02T .0705(i)\]
10. The Permittee shall provide a water-tight seal on all treatment and storage units, or provide two feet
protection from the 100-year flood plain elevation. \[15A NCAC 02T .0705(l)\]
11. Freeboard in the five-day upset basins and high-rate infiltration basins shall not be less than two feet at
any time. \[15A NCAC 02T .0705(c)\]
12. Gauges to monitor waste levels in the five-day upset basins and high-rate infiltration basins 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. \[15A NCAC 02T .0707(f)\]
13. A protective vegetative cover shall be established and maintained on all berms, pipe runs, erosion
control areas, surface water diversions, and earthen embankments (i.e., outside toe of embankment to
maximum allowable temporary storage elevation on the inside of the embankment). Trees, shrubs, and
other woody vegetation shall not be allowed to grow on the earthen dikes or embankments. Earthen
embankments shall be kept mowed or otherwise controlled and accessible. \[15A NCAC 02T .0707(g)\]
14. Metering equipment shall be tested and calibrated annually. \[15A NCAC 02T .0707(d)\]
15. An automatically activated standby power source capable of powering all essential treatment units shall
be on site and operational at all times. If a generator is employed as an alternate power supply, it shall
be tested weekly by interrupting the primary power source. \[15A NCAC 02T .0705(k)\]
16. All effluent shall be routed to the five day upset basins should the limit for fecal coliform (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 basins shall be pumped back to the treatment plant
headworks for re-treatment or treated in the five day upset basins prior to infiltration. \[15A NCAC 02T
.0108(b)(1)\]
17. The infiltration areas shall be cleaned at least once per permit cycle to remove deposited materials that
may impede the infiltration process. Cleaning records shall be maintained at the facility for 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. \[15A NCAC 02T .0707(h)\]
18. 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. \[15A NCAC 02T .0108(b)(1)\]

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IV. MONITORING AND REPORTING REQUIREMENTS
1. The Permittee shall conduct and report any Division required monitoring necessary to evaluate this
groundwater and surface water. \[15A NCAC 02T .0108(c)\]
2. A Division-certified laboratory shall conduct all analyses for the required effluent, groundwater, and
surface water parameters. \[15A NCAC 02H .0800\]
3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be
reported on Form NDMR. Facilities with a permitted flow less than 10,000 GPD may estimate their
flow from water usage records provided the water source is metered. \[15A NCAC 02T .0105(k), 02T
.0108(c)\]
4. The Permittee shall monitor the treated effluent at the frequencies and locations for the parameters
specified in Attachment A. \[15A NCAC 02T .0108(c)\]
5. The Permittee shall maintain records tracking the amount of effluent infiltrated. 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. Length of time site is infiltrated;
e. Loading rates to each infiltration site listed in Attachment B; and
f. Weather conditions.
\[15A NCAC 02T .0108(c)\]
6. Freeboard (i.e., waste level to the lowest embankment elevation) in the five-day upset basins and high-
rate infiltration basins shall be measured to the nearest inch or tenth of a foot, and recorded weekly.
Weekly freeboard records shall be maintained for 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 IV.4.) on Form NDMR for
each PPI and three copies of all operation and disposal records (as specified in Conditions IV.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
\[15A NCAC 02T .0105(l)\]
8. Pursuant to G.S. 143-215.1C(a), the Permittee shall provide to its users and the Division of Water
Resources an annual report summarizing the performance of the wastewater treatment and high-rate
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.
Division of Water Resources
Water Quality Permitting Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
\[G.S. 143-215.1C(a)\]
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9. The Permittee shall maintain a record of all residuals removed from this facility. This record shall be
maintained for five years, and shall be made available to the Division upon request. 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.
\[15A NCAC 02T .0708(b)\]
10. A maintenance log shall be kept at this facility. This log shall be maintained for five years, and shall
be made available to the Division upon request. This log shall include:
a. Date of flow measurement device calibration;
b. Date of infiltration equipment calibration;
c. Date of turbidimeter calibration;
d. Date and results of power interruption testing on alternate power supply;
e. Visual observations of the plant and plant site; and
f. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing,
inspections, and cleanings, etc.).
\[15A NCAC 02T .0707(i)\]
11. Monitoring wells MW-1, MW-2, MW-3, and MW-4 shall be sampled at the frequencies and for the
parameters specified in Attachment C. All mapping, well construction forms, well abandonment forms
and monitoring data shall refer to the permit number and the well nomenclature as provided in
Attachment C and Figure 2. \[15A NCAC 02T .0105(m)\]
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 to the Wilmington Regional Office, telephone number [phone],
within 24 hours of first knowledge 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.) rendering the facility incapable of
adequate wastewater treatment.
c. Any facility failure resulting in a discharge to 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 sites.
Emergencies requiring reporting outside normal business hours shall call
Response personnel at telephone number [phone], [phone], or [phone]. All
noncompliance notifications shall file a written report to the Wilmington Regional Office within five
days of first knowledge of the occurrence, and this report shall outline the actions proposed or taken to
ensure the problem does not recur. \[15A NCAC 02T .0108(b)(1)(A)\]
V. INSPECTIONS
1. The Permittee shall perform inspections and maintenance to ensure proper operation of the wastewater
treatment and infiltration facilities. \[15A NCAC 02T .0707(j)\]
2. The Permittee shall inspect the wastewater treatment and infiltration facilities to prevent malfunctions,
facility deterioration, and operator errors that may result in discharges of wastes to the environment,
threats to human health, or public nuisances. The Permittee shall maintain an inspection log that
includes the date and time of inspection, observations made, and 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. \[15A NCAC 02T
.0707(i), 02T .0707(j)\]
3. Division authorized representatives may, upon presentation of credentials, enter and inspect any
property, premises, or place related to the wastewater treatment and infiltration facilities permitted
herein at any reasonable time for determining compliance with this permit. Division authorized
representatives may inspect or copy records maintained under the terms and conditions of this permit,
and may collect groundwater, surface water, or leachate samples. \[G.S. 143-215.3(a)(2)\]

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VI. GENERAL CONDITIONS
1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to a
Division enforcement action. \[G.S. 143-215.6A, 143-215.6B, 143-215.6C\]
2. This permit is effective only with respect to the nature and volume of wastes described in the permit
application, and Division-approved plans and specifications. \[G.S. 143-215.1(d)\]
3. Unless specifically requested and approved in this permit, there are no variances to administrative codes
or general statutes governing the construction or operation of the facilities permitted herein. \[15A
NCAC 02T .0105(n)\]
4. The issuance of this permit does not exempt the Permittee from complying with all statutes, rules,
regulations, or ordinances that other jurisdictional government agencies (e.g., local, state, and federal)
may require. \[15A NCAC 02T .0105(c)(6)\]
5. If the permitted facilities change ownership, or the Permittee changes their name, the Permittee shall
submit a permit modification request on Division-approved forms. The Permittee shall comply with
all terms and conditions of this permit until the permit is transferred to the successor-owner. \[G.S. 143-
215.1(d3)\]
6. The Permittee shall retain a set of Division-approved plans and specifications for the life of the facilities
permitted herein. \[15A NCAC 02T .0105(o)\]
7. The Permittee shall maintain this permit until the proper closure of all facilities permitted herein, or
until the facilities permitted herein are permitted by another authority. \[15A NCAC 02T .0105(j)\]
8. This permit is subject to revocation or modification upon 60-day notice from the Division Director, in
whole or part for:
a. violation of any terms or conditions of this permit or Administrative Code Title 15A Subchapter
02T;
b. obtaining a permit by misrepresentation or failure to disclose all relevant facts;
c.
i. to enter the where a system is located or where any records are required
to be kept;
ii. to have access to any permit required documents and records;
iii. to inspect any monitoring equipment or method as required in this permit; or
iv. to sample any pollutants;
d. ee for administering and compliance monitoring; or
e. a Division determination that the conditions of this permit are in conflict with North Carolina
Administrative Code or General Statutes.
\[15A NCAC 02T .0110\]

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9. Unless the Division Director grants a variance, expansion of the facilities permitted herein shall not
occur if any of the following apply:
a. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has been convicted of
environmental crimes under G.S. 143-215.6B, or under Federal law that would otherwise be
prosecuted under G.S. 143-215.6B, and all appeals of this conviction have been abandoned or
exhausted.
b. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has previously abandoned
a wastewater treatment facility without properly closing the facility.
c. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has not paid a civil
penalty, and all appeals of this penalty have been abandoned or exhausted.
d. The Permittee or any parent, subsidiary, or other affiliate of the Permittee is currently not compliant
with any compliance schedule in a permit, settlement agreement, or order.
e. The Permittee or any parent, subsidiary, or other affiliate of the Permittee has not paid an annual
fee.
\[15A NCAC 02T .0120(b), 02T .0120(d)\]
10. This permit shall not be renewed if the Permittee or any affiliation has not paid the required annual fee.
\[15A NCAC 02T .0120(c)\]
st
Permit issued this the 1 day of July 2022
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
____________________________________________
Richard E. Rogers, Jr., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0034367
WQ0034367 Version 3.0 Shell Version 200201 Page 11 of 11

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GrabGrabGrab
Type
Version:
Sample
RecorderRecorder
CompositeCompositeCompositeCompositeCompositeCompositeCompositeCompositeComposite

11
Year
34367
3 x Week5 x Week3 x Week3 x Week3 x Week3 x Week3 x Week5 x Week3 x Week3 x Week
3 x Year 3 x
Frequency
ContinuousContinuous
MONITORING REQUIREMENTS
Measurement

6
15251010
Daily Maximum

Permit Number: WQ00

Daily Minimum

14
Monthly
Geometric Mean
EFFLUENT LIMITS
Attachment A

4735
1010
Average
Monthly
1,272,973

su
GPD
NTU
mg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/L
Units of
Measure
#/100 mL

180 ºC

FC Broth, 44.5 ºC

-(as N)

LIMITATIONS AND MONITORING REQUIREMENTS

3.0
Parameter Description
Day (20 ºC)
-
Version

WWTP Effluent

BOD, 5Chloride (as Cl)Chlorine, Total ResidualColiform, Fecal MF, MFlow, in Conduit or thru Treatment PlantNitrogen, Ammonia Total (as N)Nitrogen, Kjeldahl, Total (as N)Nitrogen, Nitrate
Total Nitrogen, Total (as N)pHPhosphorus, Total (as P)Solids, Total Dissolved Solids, Total SuspendedTurbidity, HCH Turbidimeter

EFFLUENT CHARACTERISTICS

34367
001
3 x Year sampling shall be conducted in March, July, and November.
PCS
Code
0031000940500603161650050006100062500620006000040000665703000053000076
ATTACHMENT A PPI 1. WQ00

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of

2

Page
GrabGrabGrabGrabGrabGrabGrabGrabGrabGrabGrabGrab
Type
Sample
Recorder

1

.
Year
s
3 x 3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year
Continuous
Frequency
MONITORING REQUIREMENTS
Measurement
month

8.5
482,632
Daily Maximum
be collected in separate

l

l
a
h
s

6.5
amples

Daily Minimum

Monthly
Geometric Mean
EFFLUENT LIMITS
Attachment A

1010
1.5
500
Average
Monthly

g/L
su
GPD
mg/Lmg/Lmg/Lmmg/Lmg/Lmg/Lmg/Lmg/Lmg/L
Units of
Measure
There are no set months for sample collection; however, s
#/100 mL
.
Effluent

3 x Year

to

educed
)
180 ºC

FC Broth, 44.5 ºC
-

ºC)

3.0
Parameter Description
(as Cl)

Day (20
-
e
d
Version

Groundwater Lowering System

BOD, 5Carbon, Total Organic (TOCChloriColiform, Fecal MF, MDO, Oxygen, Dissolved Flow, in Conduit or thru Treatment PlantNitrogen, Ammonia Total (as N)Nitrogen, Kjeldahl, Total (as N)Nitrogen,
Nitrate Total (as N)Nitrogen, Total (as N)pHPhosphorus, Total (as P)Solids, Total Dissolved

EFFLUENT CHARACTERISTICS

34367
002
Measurement frequency has been r
PCS
Code
00310006800094031616003005005000610006250062000600004000066570300
PPI 1. WQ00

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of

3

Page
GrabGrabGrabGrabGrabGrabGrabGrabGrabGrab
TypeType
SampleSample

Month
2 x Month2 x Month2 x Month2 x Month2 x Month2 x 2 x Month2 x Month2 x Month2 x Month
FrequencyFrequency
MONITORING REQUIREMENTSMONITORING REQUIREMENTS
MeasurementMeasurement

Daily MaximumDaily Maximum

Daily MinimumDaily Minimum

Monthly Monthly
Geometric MeanGeometric Mean
EFFLUENT LIMITSEFFLUENT LIMITS
Attachment A

AverageAverage
Monthly Monthly

susu
mg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/Lmg/L

Units of Units of
MeasureMeasure

3.0
CHARACTERISTICS
Parameter DescriptionParameter Description
Day (20 ºC)Day (20 ºC)
--
Version

Surface Water Monitoring Station #1Surface Water Monitoring Station #2

BOD, 5DO, Oxygen, Dissolved Nitrogen, Total (as N)pHPhosphorus, Total (as P)BOD, 5DO, Oxygen, Dissolved Nitrogen, Total (as N)pHPhosphorus, Total (as P)

EFFLUENT EFFLUENT CHARACTERISTICS

34367
003004
PCS PCS
CodeCode
00310003000060000400006650031000300006000040000665
PPI PPI WQ00

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of

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Page

Attachment A
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3.0
Version

34367
WQ00

1
3.0

of
2222

1

GPDGPDGPDGPD
Units
GPD/ftGPD/ftGPD/ftGPD/ft
Page
Version:

Rate
8.7363.2860.7201.408
54,09471,988
900,000246,891

34367

Application Rate

APPLICATION LIMITATIONS
Parameter
Discharge Application RateDischarge Application RateDischarge Application RateDischarge
----
NonNonNonNon

Permit Number: WQ00
01284 01284 01284 01284

AuB

NoANoA
NoA

-

Dominant
Soil Series
Norfolk
Norfolk Norfolk
Autryville

4
65252589
Net
Attachment B
2.31.71.71.176.9
Acreage

°°°°
P

T

W
W
77.52944477.52777877.52583377.525556
Longitude
----

°°°°

Regional
Latitude
34.87527834.87541734.87583334.874583
AREA INFORMATION

Northwest

OnslowOnslowOnslowOnslow
County

INFILTRATION

Sewer Authority
APPROVED LAND APPLICATION SITES AND LIMITATIONS

3.0
Owner
Version

Onslow Water and Sewer AuthorityOnslow Water and Sewer AuthorityOnslow Water and Onslow Water and Sewer Authority

34367

BC
AD
Site
Totals
ATTACHMENT B Onslow Water and Sewer Authority WQ00

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910
1, 61, 2
Version:
1, 4, 51, 2, 3
Footnotes

34367

GrabGrabGrabGrabGrabGrabGrabGrabGrab
Calculated
ng and analysis as described above.
Sample Type
d to identify the individual constituents comprising

on will be taken to represent the naturally occurring TOC
MONITORING REQUIREMENTS
Regional Office supervisor, telephone number (

shall be conducte

rom the surveyed point on the top of the casing. The measurement of
Permit Number: WQ00

Wilmington
3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year3 x Year
Annually
and this attachment.

2
Frequency Measurement

ovided in Figure
su
feet
mg/Lmg/Lmg/Lmg/Lmg/Lmg/L

#/100 mL
Present: Yes/No

up analyses required.
Attachment C
-

monitoring shall be conducted in November.

supported by laboratory proficiency studies as required by the DWR Laboratory Certification Unit. Any constituents
Daily Maximum

8.5

-
10
1.5
250500
6.5

by one of the following methods:
GROUNDWATER STANDARDS

ls shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. The measuring poi
4
-

3, and MW
-
e detected as a result of monitoring as provided in Attachment C, then the

MW
In November only, analyze

-

2,
180 ºC
-

llowing qualifications:
FC Broth, 44.5 ºC
-
-
Total (as N)
conducted in March, July, and November; Annual
1, MW

-
Parameter Description
GROUNDWATER MONITORING AND LIMITATIONS

exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampli
3.0
ells: MW

made after purging and prior to sampling for the remaining parameters.
W
Carbon, Tot Organic (TOC)Chloride (as Cl)Coliform, Fecal MF, MNitrogen, Ammonia Nitrogen, Nitrate Total (as N)pHPhosphorus, Total (as P)Solids, Total Dissolved Volatile Compounds (GW)Water
Level, Distance from measuring point
Version

GROUNDWATER CHARACTERISTICS

Standard Method 6210D, PQAnother method with prior approval by the Water Quality Permitting Section ChiefA laboratory shall be DWR certified to run any method used.The method used shall
include all the constituents listed in Table VIII of Standard Method 6230D.
34367

3 x Year monitoring shall be The measurement of water levels shall be made prior to purging the wells. The depth to water in each well shall be measured fpH shall be The measuring points
(top of well casing) of all monitoring welcasing) of all monitoring wells shall be surveyed relative to a common datum.Volatile Organic Compounds (VOC) a.b.c.d.e.Any method used shall
meet the foa.b.c.If any volatile organic compounds (VOC) arshall be contacted immediately for further instructions regarding any additional followIf TOC concentrations greater than
10 mg/L are detected in any downgradient monitoring well, additional sampling and analysisthis TOC concentration. If the TOC concentration as measured in the background monitor well
exceeds 10 mg/L, this concentraticoncentration. Any Monitoring wells shall be reported consistent with the nomenclature and location information pr
006800094031616006100062000400006657030082546
GWVOC
PCS Code

ATTACHMENT C Monitoring 1.2.3.4.5.6.7.WQ00

Figure 1 –WQ0034367
ONWASA Northwest Regional WWTP

Figure 2–WQ0034367
ONWASA Northwest Regional WWTP