WQ0000185_Final Permit_20140131

AL
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
Pat McCrory Thomas A. Reeder
Governor Director
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fie...+
January 31, 2014
MR. ERIC WEATHERLY — COUNTY ENGINEER
COUNTY OF CURRITUCK
153 COURTHOUSE ROAD, SUITE 302
CURRITUCK, NORTH CAROLINA 27929
Dear Mr. Weatherly:
John E. Skvarla, III
Secretary
Subject: Permit No. WQ0000185
Ocean Sands WWTF
Modification
High -Rate Infiltration System
Currituck County
In accordance with your permit minor modification request received December 5, 2013 we are
forwarding herewith Permit No. WQ0000185 dated January 31, 2014, to the County of Currituck for the
construction and continued operation of the subject wastewater treatment and high -rate infiltration
facilities.
This permit has been modified to allow for renovations to the infiltration area including the
demolition of the existing spray field components, regrading, and installation of new forcemains,
manifolds, risers, and spray heads, and replacement of existing dosing pumps with new, larger
submersible pumps. The modification results in a reduction in the effective hydraulic loading to the site
(from 7.65 GPD/SF to 5.72 GPD/SF) due to the additional spray heads in areas previously not irrigated
within the existing spray field footprint.
Attachment B has been modified to reflect operation of the spray field as one zone of 2.41 acres
instead of the previous ten 0.18 ac zones. The maximum allowable loading rate remains at 7.65 GPD/SF.
Also note Condition I.1, requiring abandonment of MW -8, P1, P2, and P3 (as per the previous permit
version), must be completed no later than April 1, 2014.
This permit shall be effective from January 31, 2014 until January 31, 2019, shall void Permit No.
WQ0000185 issued August 30, 2013, 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.
Failure to establish an adequate system for collecting and maintaining the required operational
information shall result in future compliance problems.
Customized electronic copies of your facility's NDMR and revised NDAR-2 reporting forms are
available for download at: http://portal.ncdenr.org/web/wg/aps/lau/reporting.
AQUIFER PROTECTION SECTION
1636 Mail Service Center, Raleigh, North Carolina 27699-1636
Location: 512 N. Salisbury St., Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: http://i)ortal.ncdenr.org/webtwa/aps
An Equal Opportunity 1 Affirmative Action Employer

Mr. Eric Weatherly
January 31, 2014
Page 2 of 2
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.
One set of approved plans and specifications are enclosed. If you need additional information
concerning this permit, please contact Cory Larsen at [phone] or [e-mail].
Sincerely,
1homas A. Reeder
cc: Currituck County Health Department
Washington Regional Office, Aquifer Protection Section
Permit File WQ0000185
Notebook File WQ0000185

8 ' _M 1s7\;Zi] *1_&-1
09ft, ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
`71 11 al_[ei I
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
County of Currituck
Currituck County
FOR THE
demolition of existing high rate infiltration spray system and construction and operation of a 2.41 acre,
600,000 GPD high rate infiltration disposal area including new forcemains, manifolds, risers, 118
Senninger Super spray heads and two submersible 15 HP dosing pumps;
�o continued operation of a 500,000 gallon per day (GPD) wastewater treatment and high -rate facility
consisting of
a 180,000 gallon total capacity influent aerated surge tank with odor control [one (1) 50,000 gallon, three
(3) 35,000 gallon, and one (1) 25,000 gallon tank], a 500,000 GPD total capacity aerobic zone, [eight (8)
50,000 gallon aeration tanks and four (4) 25,000 gallon aeration tanks], a 500,000 GPD capacity clarifier
set, [eight (8) 8,335 gallon clarifiers and four (4) 4,168 gallon clarifiers], 50,000 gallons of residuals
storage capacity, [ten (10) 5,000 gallon residuals holding tanks], 280 sq. ft. of tertiary filtration capacity,
[four (4) 42 sq. ft. filters and two (2) 56 sq. ft. filters], a 10,417 gallon liquid chlorination facility, [two (2)
3,125 gallon contact tanks and one (1) 4,167 gallon contact tank], a 3,200 gallon dosing tank, and one (1)
200 kW standby generator;
to serve the Ocean Sands Development, with no discharge of wastes to surface waters, pursuant to the
application received December 5, 2013, 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 January 31, 2014 until January 31, 2019 shall void Permit No.
WQ0000185 issued August 30, 2013 and shall be subject to the following specified conditions and
limitations:
WQ0000185 Version 3.1 Shell Version 130801 Page 1 of 8

I.
H.
SCHEDULES
No later than April 1, 2014, monitoring wells MW -8, P1, P2, and P3 shall be permanently abandoned.
Within 30 days of abandonment, a Well Abandonment Record (Form GW -30) listing this permit
number and the appropriate monitoring well identification number shall be completed for each well
abandoned and mailed to the Division of Water Resources, Aquifer Protection Section, 1636 Mail
Service Center, Raleigh, NC 27699-1636. A North Carolina Certified Well Contractor shall abandon
the monitoring wells according to the North Carolina Well Construction Standards (15A NCAC 02C
.0113) and local county rules.
2. 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.
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.
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. 0
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.
4. Effluent quality shall not exceed the limitations specified in Attachment A.
Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B.
6. The compliance boundary for the disposal system shall be specified in accordance with 15A NCAC
02L .0107(b). 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.
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.
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. 0
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).
WQ0000185 Version 3.1 Shell Version 130801 Page 2 of 8

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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
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.
t The facilities permitted herein shall be constructed according to the following setbacks:
a. The setbacks for high -rate infiltration sites shall be as follows (all distances in feet):
L Any on -property residential units:
ii. Any private or public water supply source:
iii. Surface waters:
iv. Groundwater lowering ditches:
v. Surface water diversions:
vi. Any well with exception of monitoring wells:
vii. Any property line:
viii. Impounded public water supplies:
ix. Public shallow groundwater supply:
b. The setbacks for storage and treatment units shall be as follows (all distances in feet):
i. Public right of way:
ii. Any property line:
OPERATION AND MAINTENANCE REOUHZEMENTS
10
100
200
200
50
100'
50
500
500
50
50
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 pursuant to 15A NCAC 02T .0707, which at a minimum shall include operational
functions, maintenance schedules, safety measures and a spill response plan.
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.
3. Only effluent from the Ocean Sand Development shall be infiltrated on the sites listed in Attachment
B.
4. 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.
5. No automobiles or machinery shall be allowed on the infiltration sites except during equipment
installation or while maintenance is being performed.
WQ0000185 Version 3.1 Shell Version 130801 Page 3 of 8

6. Public access to the infiltration sites and wastewater treatment facilities shall be prohibited.
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 � Y
pursuant to 15A NCAC 02T .0708.
8. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is
prohibited.
9. 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.
10. High rate infiltration fields shall be raked as needed to remove vegetation or solids and to level the
fields. Application of chemicals, including herbicides, is explicitly prohibited.
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.
2. Per 15A NCAC 02H .0800, a Division certified laboratory shall conduct all laboratory analyses for
the required effluent, groundwater or surface water parameters.
3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be
reported on Form NDMR. 0
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.
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A.
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. Loading rates to each infiltration site listed in Attachment B;
d. Weather conditions; and
WQ0000185 Version 3.1 Shell Version 130801 Page 4 of 8

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6. 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)
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
Pursuant to § 143-215.IC., the Permittee 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
Aquifer Protection Section
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
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.
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 and results of power interruption testing on alternate power supply;
b. Date of calibration of flow measurement device;
c. Visual observations of the plant and plant site; and
d. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing,
inspections and cleanings, etc.).
10. Monitoring wells (MW -4, MW -5, MW -6, MW -7, and MW -9 shall be sampled thereafter 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 the attached Site Map.
WQ0000185 Version 3.1 Shell Version 130801 Page 5 of 8

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
12. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number (252)
946-6481, 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. Any occurrence at the facility resulting in the treatment of significant amounts of wastes that is
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. Ponding in or runoff from the infiltration sites.
f. Effluent breakout from the infiltration basin(s). Z)
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.
V. INSPECTIONS
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and infiltration facilities.
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.
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.
WQ0000185 Version 3.1 Shell Version 130801 Page 6 of 8

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.
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.
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).
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 O2B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4
and under the Division's General Permit NCGO10000; 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.
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.
6. The Permittee shall retain a set of Division approved plans and specifications for the life of the
facilities permitted herein.
7. 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 pursuant to 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.
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).
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 be cause for the Division to revoke this permit pursuant to 15A
NCAC 02T .0105(e)(3).
WQ0000185 Version 3.1 Shell Version 130801 Page 7 of 8

Permit issued this the 31" day of January 2014.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
• oA. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0000185
WQ0000185 Version 3.1 Shell Version 130801 Page 8 of 8

ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 002 — WWTF Effluent
Permit Number: WQ0000185 Version: 3.1
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PCS
Code
Parameter Description
Units of
Measure
Monthly
Average
Monthly Geometric
Mean
Dail y Minimum
Daily Maximum
Measurement
Frequency
Sample
Type
50050
Flow, in conduit or thru treatment plant
GPD
500,000
Continuous
Recorder
00310
BOD, 5 -Day (20 Deg. C) - Summer
mg/L
10
15
Weekly
Composite
00310
BOD, 5 -Day (20 Deg. C) - Winter'
mg/L
10
15
2 X Month
Composite
00530
Solids, Total Suspended - Summer'
mg/L
20
30
Weekly
Composite
00530
Solids, Total Suspended - Winter'
mg/L
20
30
2 X Month
Composite
31616
Coliform, Fecal MF, M -FC Broth,44.5C -
Summer eom.mean
# / 100 mL
14
43
Weekly
Composite
31616
Coliform, Fecal MF, M -FC Broth,44.5C -
Winter ( eom.mean
# / 100 mL
14
43
2 X Month
Composite
00610
Nitrogen, Ammonia Total (as N) - Summer'
mg/L
4
6
Weekly
Composite
00610
Nitrogen, Ammonia Total (as N) - Winter'
mg/L
4
6
2 X Month
Composite
00620
Nitrogen, Nitrate Total (as N) - Summer'
mg/L
Weekly
Composite
00620
Nitrogen, Nitrate Total (as N) - Winter'
mg/L
2 X Month
Composite
C0665
Phosphorus, Total (as P) - Summer'
mg/L
Weekly
Composite
C0665
Phosphorus, Total (as P) - Winter'
mg/L
2 X Month
Composite
50060
Chlorine, Total Residual
mg/L
5 X Week
Grab
00400
pH
S. U.
6.0
9.0
5 X Week
Grab
70295
Solids, Total Dissolved
mg/L
3 X Year 2
Composite
00940
Chloride (as Cl)
mg/L
3 X Year 2
Composite
I. Summer sampling shall be conducted April through October. Winter sampling shall be conducted November through March.
2. 3 X Year sampling shall be conducted in February, July, and December.
WQ0000185 Version 3.1 Attachment A Page 1 of 2

ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
SW -1 — Surface Water Monitoring Location (shown in Figure 1)
Permit Number: WQ0000185 Version: 3.1
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
50050
Flow, in conduit or through treatment
plant
GPD
Continuous
Recorder
00310
Coliform, Fecal MF, M -FC Broth,44.5C
#/100 mL
Monthly
Grab
00610
Nitrogen, Ammonia Total (as N)
mg/L
Monthly
Grab
00620
Nitrogen, Nitrate Total (as N)
mg/L
Monthly
Grab
C0665
Phosphorus, Total (as P)
mg/L
Monthly
Grab
Flow pumped from the groundwater lowering system shall be monitored via the existing variable area velocity flow meter located inside the discharge pipe at the groundwater pump station.
WQ000018 rsion 3.1 Attat nt A 1 of 2

ATTACI INT B - APPROVED LAND APPLICATION SITES AND L._ .TATIONS Permit Number: WQ0000185 Version:....
County of Currituck — Ocean Sands
INFILTRATION AREA INFORMATION
APPLICATION LIMITATIONS
Zone
Owner
County
Latitude
Longitude
Net
Dominant
Parameter
Hourly
Yearly
Units
Acreage
Soil Series
Rate
Max
1
Currituck County
Currituck
36119'23"
75048'53"
2.41
Newhan-Corolla
01284 - Application Surface Irrigation
7.65
GPD/ft2
Complex
Totals
2.41
Note: The renovated spray field shall operate as one continuous zone.
WQ0000185 Version 3.1 Attachment B Page 1 of 2

THIS PAGE BLANK
WQ000018Osion 3.1 Atta, nt B ;e 2 of 2

ATTAILT C — GROUNDWATER MONITORING AND LIMITA10S
Monitoring wells: MW -4, MW -5, MW -6, MW -7, and MW -9
Permit Number: WQ0000185 Version: 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
Monthly
Calculated
2. 3
00400
pH
6.0 s.u.
8.5 s.u.
Monthly
Grab
2
31616
Coliform, Fecal MF, M -FC Broth,44.5C
Monthly
Grab
70300
Solids, Total Dissolved- 180 Deg.0
500 mg/1
Monthly
Grab
00680
Carbon, Tot Organic (TOC)
Monthly
Grab
6
00940
Chloride (as Cl)
250 mg/1
Monthly
Grab
00610
Nitrogen, Ammonia Total (as N)
Monthly
Grab
00620
Nitrogen, Nitrate Total (as N)
10 mg/1
Monthly
Grab
C0665
Phosphorus, Total (as P) - Concentration
Monthly
Grab
78732
Volatile Compounds, (GC/MS)
Semi-annually
Grab
1,4,5
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 gg/L or less
b. Standard Method 6210D, PQL at 0.5 gg/L or less
c. EPA Method 8021, Low Concentration, PQL at 0.5 gg/L or less
d. EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less
e. Another method with prior approval by the Aquifer Protection Section Chief
Any method used must meet the following qualifications:
a. A laboratory must be DWQ 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 gg/I, or less that must be supported by laboratory proficiency studies as required by the DWQ Laboratory Certification Unit. Any constituents
detected above the MDL but below the PQL of 0.5 gg/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 Washington Regional Office Aquifer Protection 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 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.
WQ0000185 Version 3.1 Attachment C Page] of 2

7. Monitoring wells shall be reported consistent with the nomenclature and loci tion information provided in the attached Site Map and this attachment.
WQ00001 8orsion 3.1 Atttt�nt C 'Ge 2 of 2