WQ0015053_Final Permit_20171218

Water Resources
ENVIRONMENTAL QUALITY
December 18, 2017
WILLIAM T. NASH—PUBLIC UTILITIES SUPERINTENDENT
CURRITUCK COUNTY
153 COURTHOUSE ROAD — SUITE 105 W W
CURRITum, NORTH CAROLINA 27929
Dear Mr. Nash:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Subject: Permit No. WQ0015053
Moyock Commons W WTP
Higb-Rate Infiltration System
Currituck County
In accordance with your permit renewal request received June 28, 2017, and subsequent additional
information received September 22, 2017, we are forwarding herewith Permit No. W00015053 dated
December 18, 2017, to Currituck County for the continued operation of the subject wastewater treatment
and high -rate infiltration facilities.
This permit shall be effective from the date of issuance until November 30, 2022, shall void Permit
No. W00015053 issued October 24, 2014, 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.
Please note that the permit type has been changed from a Low -Rate Infiltration System to a High -
Rate Infiltration System. This change has been 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
dated October 24, 2014:
➢ Old Condition I.5. —This condition has been removed because this facility is not subject to the
15A NCAC 02H .0400 Coastal Area requirements.
➢ Old Condition II.7. — This condition has been removed because this facility is not subject to
the 15A NCAC 02H .0400 Coastal Area requirements.
➢ Old Condition III.4. — This condition has been removed because this facility is not subject to
the 15A NCAC 02H .0400 Coastal Area requirements.
-'-"Nothing Compares -
State of North Carolina I Environmental Quality I Water Resources I Water Quality Pertaining I Non -Discharge Permitting
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-807-6332

Mr. William T. Nash
December 18, 2017
Page 2 of 2
➢ Old Condition Ill.11.
— This condition has been removed because it is not applicable to a high -
rate infiltration basin.
➢ Old Condition 111.12.
— This condition has been removed because it is not applicable to a high -
rate infiltration basin.
➢ Old Condition III.13.
— This condition has been removed.
➢ Old Condition III.14.
— This condition has been removed because it is inherently covered under
Condition II.1.
Please note the following permit conditions are new since the last permit issuance dated
October 24, 2014:
➢ Condition I.2. — Monitoring well MW-2 is to be temporarily abandoned.
➢ Condition 11I.11. —A protective vegetative cover shall be established and maintained on all
earthen embankments.
➢ Condition IV.5. — Records shall include site infiltrated and weather conditions.
➢ Attachment A — Total Kjeldahl Nitrogen, Total Nitrogen, and Total Phosphorus have been
added to the effluent monitoring.
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 Tessa Monday at (919)
807-6302 or tessa.monday&cdering_ov.
Sincerely,
�jn�daulpepper, Interim Director Qj
( Division of Water Resources
cc: Currituck County Health Department (Electronic Copy)
Washington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Digital Permit Archive (Electronic Copy)
Central Files

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT
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
Currituck County
Currituck County
FOR THE
operation of a 40,000 gallon per day (GPD) wastewater collection, treatment, and high -rate infiltration
facility consisting of the:
continued operation a wastewater collection system consisting of approximately 2,625 linear feet (LF) of
8-inch gravity sewer; an 80 gallon per minute (GPM) pump station with dual pumps, and high water alarms;
approximately 815 LF of 4-inch force main; and all associated piping, valves, controls, and appurtenances;
the
continued operation of wastewater treatment system consisting of a continuous monitoring flow recorder;
a 10,000 gallon equalization basin with two 28 GPM pumps; a manually cleaned bar screen; a flow splitter
box; two 20,029 gallon coarse bubble aeration basins; two 8,390 gallon clarifiers; a 3,938 gallon aerated
sludge holding tank; two 206 cubic feet per minute (CFM) blowers; dual bed tertiary filters (each filer
measuring 14 square feet (ft2)); a tablet chlorinator with a 1,111 gallon chlorine contact chamber; a 2,500
gallon effluent dosing tank with two 90 GPM pumps, and high water alarms; a stand-by generator with
automatic transfer switch to serve the W WTP and collection system pump station; and all associated piping,
valves, controls, and appurtenances; and the
continued operation of a higb-rate infiltration system consisting of: two 0.63 acre high -rate infiltration
basins; and all associated piping, valves, controls, and appurtenances
to serve the Moyock Commons WWTP, with no discharge of wastes to surface waters, pursuant to the
application received June 28, 2017, and subsequent additional information received by the Division of
Water Resources, and in conformity with the project plans, specifications, and other supporting data
subsequently filed and approved by the Department of Environmental Quality and considered a part of this
permit.
This permit shall be effective from the date of issuance until November 30, 2022, shall void Permit No.
WQ0015053 issued October 24, 2014, and shall be subject to the following specified conditions and
limitations:
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I. SCHEDULES
1. The Washington Regional Office, telephone number [phone], shall be notified at least 48 hours
in advance (excluding weekends and holidays) of operation of the facilities such that an in -place
inspection can be made. Notification to the regional supervisor shall be made from 8:00 a.m. until 5:00
p.m. on Monday through Friday, excluding State Holidays. [15A NCAC 02T .0108(b)(2)]
2. Within 60 days of the effective date of this permit, monitoring well MW-2 shall be temporarily
abandoned by securing the wellheads to prevent access. In accordance with 15A NCAC 02C
.0108(c)(7), each monitoring well shall have a lockable cap in order to reasonably ensure against
unauthorized access and use. A compatible watertight cap or seal shall be placed onto the riser pipe of
the monitoring wells to prevent potential contamination from entering the wells. [15A NCAC 02C
.0108(c)(7), 02T .0108(b)(2)]
3. Monitoring and reporting requirements established in Condition N.3, IVA., IV.5., IV.7., IV.10., and
IV.11. have been suspended. Upon accepting wastewater, monitoring, and reporting requirements
established in the aforementioned conditions shall be met. Note that weekly freeboard measurement
and recording requirements in Condition IV.6. have not been suspended. [15A NCAC 02T .0108(b)(1)]
4. Upon accepting wastewater, wastewater operator requirements established in Condition IH.3. shall be
met. Prior to accepting wastewater, the operator shall visit the facility no less than weekly.
5. 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 .0115(c)]
H. 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]
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4. The wastewater collection facilities shall be properly maintained and operated at all times. The
Permittee shall maintain compliance with an individual system -wide collection system permit for the
operation and maintenance of these facilities in accordance with 15A NCAC 02T .0400. If an
individual permit is not required, the following performance criteria shall be met:
a. The sewer system shall be effectively maintained and operated at all times to prevent discharge to
land or surface waters, and any contravention of groundwater or surface water standards.
b. A map of the sewer system shall be developed and actively maintained.
c. An operation and maintenance plan shall be developed, implemented and maintained.
d. Pump stations not connected to a telemetry system shall be inspected every day (i.e., 365 days per
year). Pump stations connected to a telemetry system shall be inspected at least once per week.
e. High -priority sewers shall be inspected at least once every six months.
f. A general observation of the entire sewer system shall be conducted at least once per year.
g. Overflows and bypasses shall be reported to the Washington Regional Office in accordance with
15A NCAC 02B .0506(a), and public notice shall be provided as required per North Carolina
General Statute § 143-215.1 C.
It. A grease control program shall be developed, implemented and maintained.
i. Right-of-ways and easements shall be maintained.
j. Inspection and maintenance records for Conditions II.4.a. through IIAJ. shall be maintained for a
period of at least three years, except for Conditions II.4.b. and II.4.c., which shall be maintained
for the life of the system.
[ 15A NCAC 02T .0403]
5. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T
.0108(b)(1)]
6. Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B. [15A NCAC 02T .0705(m)]
7. 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)]
8. 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]
9. 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)]
10. 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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11. 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
Currituck 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)]
12. The facilities permitted herein shall be constructed according to the following setbacks:
a. The setbacks for high -rate infiltration sites permitted under 15A NCAC 02H .0200 shall be as
follows (all distances in feet)':
i. Any habitable residence or place of public assembly under separate ownership:
400
ii. Any private or public water supply source:
100
iii. Surface waters:
100
iv. Groundwater lowering ditches and surface water diversions:
25 2
v. Any well with exception of monitoring wells:
100
vi. Any property line:
50 3
vii. Top of slope of embankments or cuts of two feet or more in vertical height:
15
viii. Any water line from a disposal system:
10
ix. Subsurface groundwater lowering drainage systems:
100
x. Any swimming pool:
100
xi. Public right of way:
50
xii. Nitrification field:
20
xiii. Any building foundation or basement:
15
1 This facility was originally permitted as low -rate infiltration system, therefore, is required to
meet the 15A NCAC 02H .02190) setbacks for surface disposal other than spray irrigation and
rapid infiltration systems.
2 The existing stormwater basin to the north of Basin 1 is considered a surface water diversion.
3 Per a setback waiver recorded in the Currituck County Register of Deeds, reduced setbacks
from the infiltration site to any property line are as follows:
Parcel No.
Deed Book / Page
Setback
Easement
015B00000080000
1419 / 238
38 feet
12 feet
[15A NCAC 02H .02190)]
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b. The setbacks for storage and treatment units permitted under 15A NCAC 02H .0200 shall be as
follows (all distances in feet):
i. Surface waters:
ii. Any well with exception of monitoring wells:
iii. Any property line:
50
100
50'
Per a setback waiver recorded in the Currituck County Register of Deeds, reduced setbacks
from the wastewater treatment and storage units to any property line are as follows:
Parcel No.
Deed Book / Page
Setback
Easement
015B00000080000
1419 / 238
38 feet
12 feet
[15A NCAC 02H .02190)]
M. 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 Moyock Commons W WTP 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)]
6. The residuals generated from the wastewater treatment facilities shall be disposed or utilized in
accordance with 15A NCAC 02T .1100. 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 two 0.63 acre infiltration basins shall not be less than two feet at anytime. [15A
NCAC 02T .0705(c)]
9. Gauges to monitor waste levels in the two 0.63 acre 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 .0108(b)(1)]
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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. The infiltration basins shall be periodically cleaned 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 Washington Regional Office,
telephone number [phone], shall be notified prior to each cleaning. [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]
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 two 0.63 acre infiltration basins
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)]
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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 IV.5. and
fV.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
[I 5A NCAC 02T .0105(1)]
8. 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.
[15A NCAC 02T .0I08(b)(1)]
9. 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 of calibration of flow measurement device;
b. Visual observations of the plant and plant site; and
c. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections
and cleanings, etc.).
[15A NCAC 02T .0108(b)(1)]
10. Monitoring wells 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 1. [15A NCAC
02T .0105(m)]
11. 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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V,
12. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number (252)
9466481, 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
betaken to ensure the problem does not recur. [15A NCAC 02T .0105(1), 02T .0108(b)(1)]
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and infiltration facilities. [15A NCAC 02T .0108(b)]
2. 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. 143-21.5.3(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 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]
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. Pursuant to the flow reduction request received July 6, 2009 and approved August 7, 2009, the Division
accepts the data -based design flow rate of 89 gallons per day per bedroom (GPDBR) for the users
served by this facility. Regardless of the adjusted daily wastewater design flow rate, at no time shall
wastewater flows exceed the limits defined in this permit for the subject facility, or exceed the sewer
capacity downstream of any new sewer extension or service connection(s).
The Permittee shall report the actual (i.e., measured) monthly average amount of wastewater flow
contributed per unit (GPDBR) for the 12 months prior to permit renewal. If any of these actual monthly
averages are within 20% of the approved value, the Permittee shall re-evaluate the approved value using
the methodology applied to determine the approved flow rate of 89 GPDBR and submit this
information within 18 months of December 18, 2017. The Division may change the daily wastewater
design flow rate for connections to the system at that time, and upon each renewal cycle, pending an
evaluation of the submitted flow information. [ 15A NCAC 02T .0114(f)]
5. The Permittee shall retain the Division's written approval of any authorized adjusted daily design flow
rate for the life of the facility, and shall transfer said written approval to any future Permittee. [15A
NCAC 02T .0114(f)]
6. 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)]
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 Pennittee 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]
8. The Pennittee shall retain a set of Division approved plans and specifications for the life of the facilities
permitted herein. [15A NCAC 02T .0.108(b)(1)]
9. 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)]
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10. 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]
11. 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]
12. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay
the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 18`" day of December 2017
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0015053
WQ0015053 Version 4.0 Shell Version 171103 Page 10 of 10

ATTACIIMENT A — LIMITATIONS AND MONITORING REQUIItEMENTS
PPI 001— W WTP Effluent
Permit Number: WQ0015053 Version: 4.0
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
15
Monthly
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
#/100 mL
200
Monthly
Grab
50050
Flow, in Conduit or thm Treatment Plant
GPD
40,000
Continuous
Recorder
00610
Nitrogen, Ammonia Total (as N)
mg/L
4
Monthly
Composite
00625
Nitrogen, Kjeldahl, Total (as N)
mg/L
Monthly
Composite
00620
Nitrogen, Nitrate Total (as N)
mg/L
Monthly
Composite
00600
Nitrogen, Total (as N)
mg/L
Monthly
Composite
00400
pH
so
5 x Week .
Grab
00665
Phosphorus, Total (as P)
mg/L
Monthly
Composite
70300
Solids, Total Dissolved —180 °C
mg/L
3 x Year'
Composite
00530
Solids, Total Suspended
mg/L
30
Monthly
Composite
1. 3 x Year monitoring shall be conducted in April, August, and November.
W00015053 Version 4.0 Attachment A Page 1 of 2

PPI 002 - Drainage Ditch at Surface Water Monitoring Point DD-1(36.5159240,-76.1722100)
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
REQUIREMENTS
PCS
Code
parameter Description
p
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
EFrequency
Sample
Type
00610
Nitrogen, Ammonia Total (as N)
mg/L
_
....
Grab
00600
Nitrogen, Total (asN)
mg/L
3 x Year
Grab
00300
DO, Oxygen, Dissolved
mg/L
3 x Year'
Grab
00665 1
Phosphorus, Total (as P)
mg/L
3 x Year
Grab
1. 3 x fear monimnng shall be conducted in April, August, and November.
PPI 004 — Drainage Ditch at Surface Water Monitoring Point DD-2 (36.5134630,-76.166719°)
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
P
Type
00610
Nitrogen, Ammonia Total (as N)
mg/L
3 x Year'
Grab
00600
Nitrogen, Total (as N)
mg/L
3 x Year'
Grab
00300
DO, Oxygen, Dissolved
mg/L
3 x Year'
Grab
00665 Phosphorus, Total (as P)
mg/L
3 x Year'
drab
i. 3 x Yea monitoring shallbe conducted in April, August, and November.
W00015053 Version 4.0 Attachment A Page 2 of 2

ATTACHMENT B - APPROVED LAND APPLICATION SITES AND LIMITATIONS
Currituck County — Moyock Commons W WTP
Permit Number: W00015053 Version: 4.0
INFILTRATION AREA INFORMATION
APPLICATION LIMITATIONS
Basin
Owner
County
Latitude
Longitude
Net
Acreage
Dominant
Soil Series
Parameter
Rate
Units
1
Moyock Commons Sewer District I
Currituck
36.516709c
-76,1729510
0.63
Ro
01284 —Non-Discharge Application Rate
1.25
GPD/ft2
2
Moyock Commons Sewer District'
Currituck
36.5132740
-76.1674220
0.63
Ro
01284 —Non-Discharge Application Rate
1.25
GPD/ft2
Totals
1.26
1. Moyock Commons Sewer District is part of Currituck County governmental structure.
W00015053 Version 4.0 Attachment B Page 1 of I

2

ATTACIMIENT C — GROUNDWATER MONITORING AND LIMITATIONS
Monitoring wells: MW-1 and MW-3
Permit Number: WQ0015053 Version: 4.0
GROUNDWATER CHARACTERISTICS
GROUNDWATER STANDARDS
MONITORING REQUIREMENTS
PCs Code
Parameter Description
Daily Maximum
Frequency Measurement
Sample Type
Footnotes
00680
Carbon, Tot Organic (TOC)
mg/L
3 x Year
Grab
1,4
00940
Chloride (as Cl)
250
mg/L
3 x Year
Grab
1
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
#/100 mL
3 x Year
Grab
1
00610
Nitrogen, Ammonia Total (as N)
1.5
mg/L
3 x Year
Grab
1
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 Yew
Grab
1
00945
Sulfate, Total (as SO4)
250
mg/L
3 x Year
Grab
I
82546
Water Level, Distance from measuring point
feet
3 x Yeaz
Calculated
1, 2, 3
i. 3 x Year monitoring snau be conducted in April, August, and 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. 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 10 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.
5. Monitoring wells shall be reported consistent with the nomenclature and location information provided in Figure 1 and this attachment.
W00015053 Version 4.0 Attachment C Page 1 of 1

FIGURE 1 — SITE MAP Permit Number: WQ0015053 Version: 4.0
County of Currituck—Moyock Commons WWTP
W00015053 Figure 1 Pagel of 2

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