WQ0003044_Final Permit_20060714

W A r�9Q Michael F. Easley, Governor
�O G William G. Ross Jr., secretary
(3 � North Carolina Department of Environment and Natural Resources
5: 'l Alan W. Klimek, P.E., Director
0 Division of Water Quality
July 14, 2006
Ms. Sarah Laguna
Dunescape Villas Homeowners Association, Inc.
P.O. Box 4455
Emerald Isle, NC 28594
Subject: Permit No. WQ0003044
Dunescape Villas HOA
Dunescape Villas Condominiums
Wastewater Treatment and High Rate
Infiltration Facilities
Carteret County
Dear Ms. Laguna:
In accordance with your renewal application received September 26, 2005, we are forwarding herewith
Permit No. WQ0003044, dated July 14, 2006, to Dunescape Villas Homeowners Association, Inc. 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 June 30, 2011, shall void Permit No.
WQ0003044 issued June 16, 2000, and shall be subject to the conditions and limitations as specified therein.
Please note that new conditions have been added (Conditions I.2, 1.4, I.9.b and 111.2) that respectively require the
proper maintenance and operation of the wastewater collection facilities, the repair or replacement of the leaking
center pivot units on both rotary distributor units, a 100-foot buffer distance between the high -rate infiltration
units and any impounded public surface water supply or public shallow ground water supply, and the installation
and utilization of an influent flow measuring device. The address for subnutting monitoring reports has also
changed (Conditions IIIA and IV.2.b).
Please also note another new condition (Condition VIA) that requires the submission of a plan of action
within 90 days of permit issuance that is to describe intended capital upgrades to the wastewater treatment system
that address the ongoing concerns of systern reliability and groundwater quality issues. Please be aware that the
fulfillment of the requirements listed under Condition V14 does not relieve the Permittee of responsibility for
any past or future permit violations. Please pay particular attention to the monitoring requirements in this permit.
Failure to establish an adequate system for collecting and maintaining the required operational information will
result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This
request must 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, 6714 Mail Service Center, Raleigh, NC 27699-
6714. Unless such demands are made this permit shall be final and binding.
N orthCarolina
�%litllC!l��j�
Aquifer Protection Section 1636 Mail 5m-vice Center Raleigh, NC 27699-1636 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 2728 Capital Boulevard Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycledll0% Post Consumer Paper

If you need additional information concerning this matter, please contact David Goodrich at (919) 715-
6162.
Sinceerely
I l
jZAlan W. Klimek, P.E.
cc: Carteret County Health Department
Wilmington Regional Office, Aquifer Protection Section
Technical Assistance and Certification Unit
Aquifer Protection Section Central Files
NDPU Files
2

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
HIGH RATE LNFILTRATION 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
Dunescape Villas Homeowners Association, Inc.
Carteret County
FOR THE
continued operation of 55,000 GPD wastewater treatment and high rate infiltration facilities consisting of
approximately 1,760 linear feet of 8-inch gravity sewer, a 150-gpm influent pump station with dual pumps and
approximately 247 linear feet of 4-inch force main; a wastewater treatment and rotary distributor facility
consisting of a 28,860 gallon equalization basin, a 55,000 gallon aeration basin, a 5,850 gallon dual hopper
clarifier, a 31,145 gallon aerated digester and a tertiary section consisting of two (2) tertiary filters each with a
surface area of 15 square feet, a 4,700 gallon mudwell, a 3,750 gallon combined clearwell and chlorine contact
tank with a tablet chlorinator and a 5,082 gallon dosing tank; four (4) 160 cfm blowers, three (3) rotary
distributors each with a diameter of 65 feet, a 200 gpm dosing pump, two (2) standby power generators and all
associated piping, valves, and appurtenances to serve Dunescape Villas Condominiums, with no discharge of
wastes to the surface waters, pursuant to the application received September 26, 2005, and subsequent additional
information received by the Division, and in conformity with the project plan, 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 the date of issuance until June 30, 2011, shall void Permit No.
WQ0003044 issued June 16, 2000, and shall be subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective actions, including those actions that may be
required by the Division of Water Quality (Division), such as the construction of additional or
replacement wastewater treatment or disposal facilities.

2. 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 as required by 15A NCAC 2H .0227. If an individual
permit is not required, the following performance criteria shall be met as provided in 15A NCAC 2H
.0227:
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 the groundwater standards in 15A NCAC 2L
.0200 or the surface water standards in 15A NCAC 2B .0200.
b. A map of the sewer system shall be developed prior to July 1, 2006 and shall be actively
maintained.
c. An operation and maintenance plan shall be developed and implemented.
d. Pump stations that are not connected to a telemetry system shall be inspected every day (i.e. 365
days a year). Pump stations that are connected to a telemetry system shall be inspected at least
once per week.
e. High -priority sewer lines shall be inspected at least once per every six-month period of time.
£ A general observation of the entire sewer system shall be conducted at least once per year.
g. Inspection and maintenance records shall be maintained for a period of at least three years.
h. Overflows and bypasses shall be reported to the appropriate Division regional office in
accordance with 15A NCAC 2B .0506(a), and public notice shall be provided as required by
North Carolina General Statute § 143-215.1 C.
3. This permit shall become voidable if the soils fail to adequately assimilate the wastes and may be
rescinded unless the facilities are installed, maintained, and operated in a manner which will protect the
assigned water quality standards of the surface waters and ground waters. The ponding of wastewater
on the surface of the distribution field when the dosing cycle commences shall be considered as
evidence of failure of the soils to adequately assimilate the wastewater. Additionally, such failure shall
be interpreted as a violation of this permit condition.
4. Within six (6) months of permit issuance, the center pivots of both rotary units shall be replaced or
repaired by stopping them from leaking.
5. The residuals generated from these treatment facilities must be disposed in accordance with General
Statute 143-215.1 and in a manner approved by the Division.
6. Adequate measures shall be taken to divert stormwater from the high rate infiltration area and to
prevent wastewater runoff.
7. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
8. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface or
groundwaters resulting from the operation of this facility.
9. The following buffers shall be maintained:
a. 400 feet between high rate infiltration unit and any on -property residential units that are to be sold
(e.g., condominiums, subdivisions),
b. 500 feet between high rate infiltration unit and any impounded public surface water supply or
public shallow (less than 50 feet deep) ground water supply,
c. 100 feet between high rate infiltration unit and any private or public water supply source,
d. 200 feet between high rate infiltration unit and any streams classified as WS or B,
e, 200 feet from mean high water between high rate infiltration unit and any "SA" or "SB" classified
surface waters,
2

£ 200 feet from normal high water between high rate infiltration unit and any other stream, canal,
marsh, or coastal waters,
g. 200 feet from normal high water between high rate infiltration unit and any Class I or Class H
impounded reservoir used as a source of drinking water,
h. 200 feet between high rate infiltration unit and any other lake or impoundment,
i. 200 feet between high rate infiltration unit and any Drainage systems (ditches, drains, surface
water diversions, etc.) and from any groundwater lowering and surface drainage ditches,
j. 50 feet between high rate infiltration unit and property lines,
k. 50 feet between treatment units and property lines, and
1. 50 feet between high rate infiltration unit and public right of ways.
Some of the buffers specified above may not have been included in previous permits for this waste
treatment and disposal system. These buffers are not intended to prohibit or prevent modifications,
which are required by the Division, to improve performance of the existing treatment facility. These
buffers do, however, apply to modifications of the treatment and disposal facilities, which are for the
purpose of increasing the flow that is tributary to the facility. These buffers do apply to any
expansion or modification of the high rate infiltration areas and apply in instances in which the sale of
property would cause any of the buffers now complied with, for the treatment and disposal facilities,
to be violated. The applicant is advised that any modifications to the existing facilities will require a
permit modification.
10. A usable green area shall be maintained for wastewater disposal. The green area shall have the
capability of accommodating the average daily flow of the facility being served without exceeding
the loading rates of the green area. A "green area", as defined in 15A NCAC 2H .0404 (g)(7), is an
area suitable for waste disposal, either in its natural state or which has been modified by planting a
vegetative cover of grasses or low growing shrubbery.
II. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times.
Upon classification of the wastewater treatment and spray irrigation facilities by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and
employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s)
to be back-up ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The ORC shall visit
the facilities in accordance with 15A NCAC SG .0204 or as specified in this permit and shall comply
with all other conditions specified in these rules.
The application rates for the high rate infiltration system shall not exceed 10 GPD/ft2.
The facilities shall be effectively maintained and operated as a non -discharge system to prevent the
discharge of any wastewater outside of the high rate infiltration disposal area, which result from the
operation of this facility.
5. No traffic or equipment shall be allowed on the disposal area except while installation occurs or
while normal maintenance is being performed.
6. The rotary distribution fields shall be raked twice weekly during the months April through October
and once a week during the months of November through March.
The screenings removed from the wastewater treatment plant shall be properly disposed in a sanitary
landfill or by other means that have been approved by this Division.
Vegetative growth must be kept out of the rotary distribution areas at all times. All vegetation must
be removed manually so that minimal disturbance will occur to the disposal area.

9. The application of chemicals to the distribution fields) is expressly prohibited.
10. An automatically activated standby power source 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.
11. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records of this
maintenance shall be maintained by the Permittee.
12. The chlorine tablets used in the disinfection facility shall be of the kind and type specified in the
plans and specifications approved by the Division.
M. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division to insure surface and ground water protection will
be established and an acceptable sampling reporting schedule shall be followed.
2. Influent flow shall be continuously monitored and daily flow values shall be reported on Form
NDMR.
The Permittee shall install an appropriate flow measurement device consistent with approved
engineering and scientific practices to ensure the accuracy and reliability of influent flow
measurement. Flow measurement devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of
once per year, and maintained to ensure that the accuracy of the measurements is consistent with the
accepted capability of that type of device. Records of flow measurement device calibration shall be
kept on file by the Permittee for a period of at least three years. At a minimum, data to be included in
this documentation shall be:
a. Date of flow measurement device calibration
b. Name of person performing calibration
c. Percent from true flow
3. As an indicator of proper operation and maintenance, the facility shall produce an effluent in
compliance with the following limitations:
Parameter _ _ Monthly Average a Daily Maximum c
Flow 55,000 GPD
BOD5 (5-day, 20°C) 10 mg/l
NH3 as N 4 mg/l
TSS 20 mg/l
7' Fecal Coliform 14 per 100 ml 43 per 100 ml
The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
a
Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples collected
during the reporting period.
6
Monthly average for fecal coliform shall be the geometric mean of all samples collected during the
reporting period.
c
Daily maximum shall be the maximum value of all samples collected during the reporting period.
4

The effluent from the subject facilities shall be monitored, by the Permittee, at the point prior to
discharge for the following parameters:
Parameter
Sampling Point
Sampling Frequency
Type of Sample
Flow
Influent or Effluent
Continuous
Recording
BOD5 (5-day, 20°C)
Effluent
*2/Month
Composite
NH3 as N
Effluent
*2/Month
Composite
TSS
Effluent
*2/Month
Composite
Fecal Coliform
Effluent
*2/Month
Grab
Settleable Matter
Effluent
Daily
Grab
Residual Chlorine
Effluent
Daily
Grab
NO3
Effluent
Triannually
Grab
TDS
Effluent
* *Triannually
Grab
TOC
Effluent
**Triannually
Grab
Chloride
Effluent
Triannually
Grab
pH
Effluent
*Triannually
Grab
* 2/Month sampling frequency only during the months of April through October. During the
remainder of the year, these parameters shall be monitored monthly.
** Triannually sampling shall be conducted during March, July, and November.
If Groundwater sampling indicates or predicts problems with compliance with of the Groundwater
Standards, this permit will be modified to include additional and/or more restrictive limitations.
4. Three (3) copies of all monitoring data (as specified in condition III 2 and III 3) on Form NDMR-1
and three (3) copies of all operation and disposal records (as specified in condition I11 5) on Form
NDAR-2 shall be submitted on or before the last day of the following month. All information shall
be submitted to the following address:
NCDENR-DWQ
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
5. A record shall be maintained of all residuals removed from this facility. The record shall include the
name of the hauler, the permit authorizing the disposal or a letter from a municipality agreeing to
accept the residuals, the date the residuals were hauled, and the volume of residuals removed.
6. A maintenance log shall be maintained at this facility including, but not limited to, the following
items:
a. Daily sampling results including dissolved oxygen in the aeration basin and at the clarifier weir;
b. Visual observations of the plant and plant site;
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.);
d. Date of calibration of flow measurement device;
e. Date and results of power interruption testing on alternate power supply; and
f. Dates fields were raked and arms inspected.
5

7. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (919)
796-7215, as soon as possible, but in no case more than 24 hours or on the next working day
following the occurrence or first knowledge of the occurrence of any of the following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of significant
amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the
contents of a basin or tank, the known passage of a slug of hazardous substance through the
facility, or any other unusual circumstances;
b. Any process unit failure, due to known or unknown reasons, that renders the facility incapable of
adequate wastewater treatment, such as mechanical or electrical failures of pumps, aerators,
compressors, etc.;
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass of all or
any portion of the influent to such station or facility; or
d. Any time that self -monitoring information indicates that the facility is not in compliance with its
permit limitations.
Occurrences outside normal business hours may also 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 (5) days following first knowledge of the occurrence. This report must outline the actions taken
or proposed to be taken to ensure that the problem does not recur.
IV. GROUNDWATER REQUIREMENTS
Sampling Requirements:
a. Groundwater monitoring wells MW-1, MW-4, MW-5, and MW-6 shall be sampled every March,
July, and November for the parameters listed below:
Nitrate Nitrogen (NO3-N)
TDS
pH
Ammonia Nitrogen (NH3-N)
TOC
Water Level
Chloride Fecal Coliforms
Volatile Organic Compounds — J_n November only
Water levels in the groundwater monitoring wells shall be measured prior to sampling the
groundwater for the remaining parameters. The depth to water in each well shall be measured
from the surveyed point on the top of the casing, which shall be surveyed relative to a common
datum.

b. Volatile Organic Compounds (VOCs) shall be analyzed using one of the following methods:
i. Standard Method 6230D (PQL at 0.5 ug/L or less),
ii. Standard Method 6210 (PQL at 0.5 ug/L or less),
iii. EPA Method 8021 (Low Concentration, PQL at 0.5 ug/L or less),
iv. EPA Method 8260 (Low Concentration, PQL at 0.5 ug/L or less), or
v. Another method with prior approval by the Division.
Any of the referenced methods used for VOCs shall, at a minimum, include all of the constituents
listed in Table VIII of Standard Methods 6230D. The method used shall provide a PQL at 0.5
ug/L or less, which shall be supported by laboratory proficiency studies as required by the
Division's Laboratory Certification Unit. Any constituents detected above the MDL, but below
the PQL at 0.5 ug/L, shall be qualified (i.e., estimated) and reported.
If total organic carbon (TOC) concentrations greater than 10 milligrams per liter are detected in
any downgradient groundwater monitoring well, additional sampling and analysis shall be
conducted to identify the individual constituents comprising this TOC concentration. If the TOC
concentration as measured in the background well exceeds 10 milligrams per liter, this
concentration shall be taken to represent the naturally -occurring TOC concentration. Any
exceedances of this naturally -occurring TOC concentration in downgradient wells shall be
subject to the additional sampling and analysis as described in this permit.
d. Any laboratory selected to analyze parameters shall be Division -certified for those parameters
required.
Reporting/ Documentation Requirements:
a. The results of the sampling and analysis shall be received on the most -recent version of
"Groundwater Quality Monitoring: Compliance Report Farm" (i.e., GW-59 Form) with copies of
the laboratory analyses attached by the Division's Groundwater Section on or before the last
working day of the month following the sampling month.
b. All reports, maps, and other documents required in the "Groundwater Requirements" section of
this permit shall be mailed to the following address:
NCDENR-DWQ
Information Processing Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Updated blank reporting and other forms may be downloaded from the web site for the Division's
Aquifer Protection Section at http://h2o.enr.state,ne.us/aps/ or requested from the address listed
above.

3. Applicable Boundary Requirements:
a. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the
disposal system constructed prior to December 31, 1983 is established at either (1) 500 feet from
the waste disposal area, or (2) at the property boundary, whichever is closer to the waste disposal
area. An exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is
subj ect to remediation action according to 15A NCAC 2L .0106(d)(2).
b. A REVIEW BOUNDARY is established around the disposal system midway between the
Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of standards
at the Review Boundary shall require action in accordance with 15A NCAC 2L .0106(d)(1).
4. Other Requirements:_
a. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
V. INSPECTIONS
Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper
operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to prevent
malfunctions and deterioration, operator errors and discharges which may cause or lead to the release
of wastes to the environment, a threat to human health, or a nuisance. The Permittee shall maintain
an inspection log or summary including at least the date and time of inspection, observations made,
and any maintenance, repairs, or corrective actions taken by the Permittee. This log of inspections
shall be maintained by the Permittee for a period of three years from the date of the inspection and
shall be made available to the Division or other permitting authority, upon request.
Any duly authorized officer, employee, or representative of the Division may, upon presentation of
credentials, enter and inspect any property, premises or place on or related to the disposal site or
facility at any reasonable time for the purpose of determining compliance with this permit, may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or
there is a name change of the Permittee, a formal permit request must be submitted to the Division
accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and
may or may not be approved.

Within ninety (90) days of permit issuance, three copies of a plan of action describing intended
capital upgrades to the wastewater treatment system, that address the ongoing concerns of system
reliability and groundwater quality issues, shall be submitted to the Division at the address given
below. The plan shall be prepared by a professional engineer and shall include a written
conceptualization of the work to be performed, general layout of the system, and a process flow
description. Upon approval of this plan by the Division, the permittee shall submit a schedule for the
construction and implementation of the upgrades.
NCDENR-DWQ
Aquifer Protection Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
The subject wastewater treatment and disposal facilities shall be connected to an operational publicly
owned wastewater collection system within 180 days of its availability to the subject facilities, if the
subject wastewater treatment or disposal facilities are in noncompliance with the terms and conditions
of this non -discharge permit or the governing statutes or regulations. Prior to the initiation of these
connection activities, appropriate approval must be received from this Division.
6. The annual administering and compliance fee must be paid by the Permittee within thirty (30) days
after being billed by the Division. Failure to pay the fee accordingly may cause the Division to
initiate action to revoke this permit as specified by 15A NCAC 2H .0205 (c)(4).
Failure to abide by the conditions and limitations contained in this permit may subject the Permittee
to an enforcement action by the Division in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
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 government agencies (local, state,
and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A
NCAC 2B.0200, erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under
the Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A
NCAC 213 .0200 and 2H .0500.
A set of approved plans and specifications for the subject project trust be retained by the Permittee
for the life of this project.
10. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its extension.
Upon receipt of the request, the Commission will review the adequacy of the facilities described
therein, and if warranted, will extend the permit for such period of time and under such conditions
and limitations as it may deem appropriate.
Permit issued this the 101 day of July, 2006
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0003044
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