WQ0003687_Final Permit_20011211

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
December 11. 2001
FRED TEAL — PRESIDENT
GOLD HILL AIRPARK HOMEOWNERS ASSOCIATION
255 FINE STREET
GOLD HILL, NC 28071-8703
Dear Mr. Teal:
4 017
•
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RF-50URCES
Subject: Permit No. WQ0003687
Spray Irrigation System Modification
Rowan County
In accordance with your application received June 28, 2001 and additional information received
November 9, 2001, we are forwarding herewith Permit No. WQ0003687 dated December 11, 2001, to Gold Hill
Airpark for the modification and continued operation of the subject wastewater treatment and spray irrigation
facilities.
This permit shall be effective from the date of issuance until November 30, 2006, and shall be subject to
the conditions and limitations as specified therein. 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.
The following permit conditions are specific to your permit and/or are new to the permit since the
previous permit issued January 24, 2000.
Condition 1.8 -- This condition grants the permittee a variance to the 400 foot buffer requirement
between the spray irrigation wetted area and residences under separate ownership. However, this
condition also requires that the deeds to the proposed homes on Lots 13 & 18 be amended to include
the 100-foot buffer easement within ninety (90) days of permit issuance.
Condition HI.3 — This condition states that all major non -discharge facilities (daily flow greater than
10,000 gallons) shall have their influent measured with an appropriate flow measurement device.
The measurement device shall be installed upstream of the stabilization lagoon and must be
completed within one (1) year of permit issuance.
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.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

If you need additional information concerning this matter, please contact Nathaniel Thornburg at (919)
733-5083 extension 533.
Since e ,
Gregory J. Thorpe, Ph.D.
cc: Rowan County Health Department
Mooresville Regional Office, Water Quality Section
Mooresville Regional Office, Groundwater Section
Groundwater Section, Central Office
David A. Roberts — David A. Roberts Engineering
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
SPRAY IRRIGATION 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
Gold Hill Airpark
Rowan County
FOR THE
construction and operation of a 10,080 gallon per day (GPD) spray irrigation treatment and disposal facility consisting
of 0.151 million gallon (MG) stabilization lagoon, a 0.484 MG storage lagoon, a 1,500 gallon hypochlorination contact
tank, a 7.5 horsepower (hp) 40 gallon per minute (GPM) pump with high water alarms, a 4.886 acre spray irrigation
area,
and the continued construction and operation of a sewer collection system consisting of approximately 3,085 linear
feet of 8-inch gravity sewer, a 1,500 gallon septic tank at each residence, a 1,000 gallon pump tank with a 0.5 hp
submersible pump and high water alarms at residences as required, to serve twenty-eight (28) residential lots in the
Gold Hill Airpark, with no discharge of wastes to the surface waters, pursuant to the application received June 28,
2001, 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 November 30, 2006, and shall be subject to the
following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. Upon completion of construction and prior to operation of this permitted facility, a certification must be
received from a professional engineer certifying that the permitted facility has been installed in accordance
with this permit, the approved plans and specifications, and other supporting materials. If this project is to
be completed in phases and partially certified, you shall retain the responsibility to track further
construction approved under the same permit, and shall provide a final certificate of completion once the
entire project has been completed. Mail the Certification to the Non -Discharge Permitting Unit, Division
of Water Quality, 1617 Mail Service Center, Raleigh, NC 27699-1617.
2. The Mooresville Regional Office, telephone number [phone], shall be notified at least forty-eight
(48) hours in advance of operation of the installed facilities so that an in -place inspection can be made.
Such notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m.
until 5:00 p.m. on Monday through Friday, excluding State Holidays.

3. The spray irrigation facilities shall be effectively maintained and operated at all times so that there is no
discharge to the surface waters, nor any contamination of ground waters which will render the
unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily, including tI.
creation of nuisance conditions or failure of the irrigation area to adequately assimilate the wastewater, 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 and disposal facilities.
4. 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.
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. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under separate
ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
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 spray irrigation 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.
The buffer requirement for Lots 13 and 18 has been reduced to 300 feet between the wetted area and
residence under separate ownership (Condition I.7(a)). However, within ninety (90) days of permit
issuance, the deeds for both Lot 13 and Lot 18 shall be amended to indicate that a 100-foot easement into
their buffers has been granted. Failure to incorporate the buffer easement into all relevant deeds shall
result in a violation of Condition I.7(a).
9. The spray header system and disinfection facilities shall be installed once the storage lagoon reaches 50%
of its hydraulic capacity. Upon completion of installation of the disinfection facilities and irrigation
system, a certification must be received from a professional engineer certifying that the entire facility has
been installed in accordance with this permit, the approved plans and specifications, and other supporting
• facilities. Upon reaching 50% of the storage lagoons capacity and installation of the spray headers, an
operator certified by the Division in the operation of spray systems shall be retained by the Permittee in
accordance with Permit Condition H. 2.
2

II. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Water Pollution Control System Operators Certification
Commission (WPCSOCC), the Permittee shall employ a certified wastewater treatment plant operator to
be in responsible charge (ORC) of the wastewater treatment facilities. The operator must hold a certificate
of the type and grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the WPCSOCC. The Permittee must also employ a certified back-up operator of the
appropriate type and grade to comply with the conditions of 15A NCAC 8G .0202. The ORC of the
facility must visit each Class I facility at least weekly and each Class II, III, and IV facility at least daily,
excluding weekends and holidays, and must properly manage and document daily operation and
maintenance of the facility and must comply with all other conditions of 15A NCAC 8G .0202. Once the
facility is classified, the Permittee must submit a letter to the WPCSOCC which designates the operator in
responsible charge within thirty days after the wastewater treatment facilities are 50% complete.
A suitable year round vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will
cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. 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.
7. The application rate shall not exceed a cumulative loading of 31.2 inches over any twelve (12) month
period at an instantaneous application rate not to exceed 0.2 inches per hour.
8. No type of wastewater other than that from Gold Hill Airpark shall be sprayed onto the irrigation area.
9. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
10. Public access to the land application sites shall be controlled during active site use. Such controls may
include the posting of signs showing the activities being conducted at each site.
11. Freeboard in the stabilization and storage lagoons shall not be less than two (2) feet at any time.
III. MONITORING AND REPORTING REQUIREMENTS
Any monitoring (including groundwater, surface water, soil or plant tissue analyses) 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. Adequate records shall be maintained by the Permittee tracking the amount of wastewater disposed. These
records shall include, but are not necessarily limited to, the following information:
a. date of irrigation,
b. volume of wastewater irrigated,
c. field irrigated,
d. length of time field is irrigated,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings£or each field,
f. weather conditions, and
g. maintenance of cover crops.

3. Influent flow shall be continuously monitored and daily flow values shall be reported on Form NDMR.
The Pennittee shall install an appropriate flow measurement device consistent with approved engineeri
and scientific practices to ensure the accuracy aad reliability of influent flow measurement. The flow
measurement device shall be installed upstream of the stabilization lagoon. 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
Plans and specifications for the flow measuring device shall be prepared by a licensed Professional
Engineer and submitted to the appropriate regional office 30 days prior to installation. The flow
measuring device shall be installed within 1 year of the date of this permit.
4. The effluent from the subject facilities shall be monitored by the Permittee at the point prior to irrigation
every March, July and November for the following parameters:
BOD5 TSS
Fecal Coliform pH
NH3 as N
5. Three (3) copies of all operation and disposal records (as specified in condition III 2) on Form NDAR-
and three (3) copies of all effluent monitoring data (as specified in condition Ill 3 and 111 4) on Fon.
NDMR-1 shall be submitted on or before the last day of the following month. All information shall be
submitted to the following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge Compliance/Enforcement Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617

6. Noncompliance Notification:
The Permittee shall report by telephone to the Mooresville Regional Office, telephone number (704) 663-
1699, 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 sludge digester; 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 gender 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 directly to
receiving waters without treatment of all or any portion of the influent to such station or facility.
d. Any time that self -monitoring information indicates that the facility has gone out of compliance with
its permit limitations.
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
1. Well Construction I Abandonment Criteria:
a. At least ninety (90) days prior to the installation and activation of the spray fields, three (3) monitor
wells, one (1) upgradient and two (2) downgradient, shall be installed to monitor groundwater quality.
These wells shall be called MW-1, MW-2, and MW-3. The well(s) shall be constructed such that the
water level in the well is never above or below the screened (open) portion of the well at any time
during the year. The general location and name for each well is marked on Figure 1. Each monitoring
well shall be located at the review boundary, constructed in accordance with this permit, and approved
by the Mooresville Regional Office.
b. The well(s) shall be constructed by either a North Carolina Certified Well Contractor, the property
owner, or the property lessee according to General Statutes 87-94.4(b)(2). All wells that are
constructed for purposes of groundwater monitoring shall be constructed in accordance with 15A
NCAC 2C .0108 (Standards of Construction for Wells Other than Water Supply) and any other state
and local laws and regulations pertaining to well construction.
c. The Mooresville Regional Office, telephone number [phone], shall be notified at least forty-
eight (48) hours prior to the construction of any monitoring well so that an inspection can be made of
the monitoring well location. Such notification to the regional groundwater supervisor shall be made
during the normal office hours from 8:00 a.m. until 5:00 p.m- on Monday through Friday, excluding
state holidays.
d. Within thirty (30) days of completion of all well construction activities, a certification must be
received from a professional engineer certifying that the monitoring wells are located and constructed
in accordance with the Well Construction Standards (15A NCAC 2C) and this permit. This
certification should be submitted with copies of the Well Completion Form.,(GW-1) for each well.
Mail this certification and the associated GW-1 forms to the Permits and Compliance Unit,
Groundwater Section, 1636 Mail Service Center, Raleigh, NC, 27699-1636.

2. Sampling Criteria.
Monitor wells MW-I, MW-2 and MW-3 shall be sampled initially after construction (and prior
spray irrigation) and thereafter every March, July, and November for the following parameters:
Water Level pH
Chloride Total Dissolved Solids (TDS)
Fecal Coliforms Total Organic Carbon (TOC)
Nitrate Nitrogen (NO3-N) Total Ammonia Nitrogen (NH3-N)
Volatile Organic Compounds — In November only
Note that prior to sampling for the above parameters, the measurement of water levels must be taken.
The depth to water in each well shall be measured from the surveyed point on the top of the casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed relative to a
common datum.
b. For Total Organic Carbon (TOC), if concentrations greater than 10 mg/l are detected in any down
gradient 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 down -gradient wells shall be subject to the additional sampling and analysis
described above.
c. For Volatile Organic Compounds (VOCs) sampled in November, use only one of the following
methods:
1) Standard Method 6230D. PQL at 0.5 µg/L or less
2) Standard Method 6210D, PQL at 0.5 µg /L or less
3) EPA Method 8021, Low Concentration, PQL at 0.5 µg /L or less
4) EPA Method 8260, Low Concentration, PQL at 0.5 µg /L or less
5) Another method with prior approval by the Groundwater Section Chief
Any of the referenced methods used for VOCs must at a minimum, include all the constituents listed
in Table VIR of Standard Method 6230D. Any method used trust provide a PQL of 0.5 µg /L or
less, which must be supported by laboratory proficiency studies as required by the DWQ Laboratory
Certification Unit. Any consitituents detected above the Method Detection Limit (MDL) but below
the PQL of 0.5 µg/L must be qualified (estimated) and reported.
d. Any laboratory selected to analyze parameters must be Division of Water Quality (DWQ) certified for
those parameters required.
R

Reporting / Documentation:
a. All reports and documentation (GW-1, GW-59) shall be mailed to the following address:
Groundwater Section
Permits and Compliance unit
1636 Mail Service Center
Raleigh, NC 27699-1636
Updated blank forms (GW-1, GW-30, GW-59) may be downloaded from the Groundwater Section's
website at http://gw.ehnr.state.nc.us or requested from the address mentioned above.
b. For initial sampling of the well(s), the permittee shall submit a copy of the GW-1 Form (Well
Construction Record) with the Compliance Monitoring Form (GW-59) for each well to the address
listed in the "Reporting / Documentation" section of the Groundwater Requirements. Initial
Compliance Monitoring Forms that do not include copies of the GW-1 form may be returned to the
permittee without being processed. Failure to submit these forms as required by this permit may result
in the initiation of enforcement activities pursuant to NC General Statutes 143-215.6A.
c. The results of the sampling and analysis must be received on Form GW-59 (Groundwater Quality
Monitoring: Compliance Report Form) by the Groundwater Section (address listed in the "Reporting /
Documentation" section of the Groundwater Requirements), on or before the last working day of the
month following the sampling month. The data of all groundwater sampling analyses required by the
permit conditions must be reported using the most recent GW-59 form along with attached copies of
the laboratory analyses.
d. Within sixty (60) days of completion of all monitoring wells, the permittee shall submit two original
copies of a scaled topographic map (scale no greater than 1 ":100') signed and sealed by a professional
engineer or a state licensed land surveyor that indicates all of the following information:
1) The location and identity of each monitoring well.
2) The location of major components of the waste disposal system.
3) The location of property boundaries within 500 feet of the disposal area(s).
4) The latitude and longitude of the established horizontal control monument.
5) The elevation of the top of the well casing (which shall be known as the "measuring point")
relative to a common datum.
6) The depth of water below the measuring point at the time the measuring point is established.
7) The location of Review and Compliance boundaries.
8) The date the map is prepared and/or revised.
Control monuments shall be installed in such a manner and made of such materials that the monument
will not be destroyed due to activities that may take place on the property. Maps and any supporting
documentation shall be sent to the Groundwater Section as addressed in the "Reporting 1
Documentation" section above.
The permittee is responsible for the geographic accuracy of any map submitted, however produced.

4. Vertical Separation Requirements:
a. For domestic wastewater:
Waste application activities shall not occur when the vertical separation between depth of application
and the water table is as less than one (1) foot. Verification of the water table elevation can be
confirmed by water level readings obtained from the monitoring weIl(s) near the site or auger
boring(s), which must be done within 24 hours, prior to application of wastewater. Any open borings
must be properly filled with native soil, prior to application to decrease the chance of any waste
contaminating the groundwater.
5. Applicable Boundaries:
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 after December 31, 1983 is established at either (1) 250 feet from the waste disposal area,
or (2) 50 feet within the property boundary, whichever is closest to the waste disposal area. An
exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is subject to
immediate re -mediation action in addition to the penalty provisions applicable under General Statute
143-215.6A(a)(1).
b. In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal
systems midway between the Compliance Boundary and the perimeter of the waste disposal area_ Any
exceedance of standards at the Review Boundary shall require remediation action on the part of the
permittee.
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 shalI 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 keep 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 upon request to the Division or other permitting authority.
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.
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.
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 Ch. 4 and under the Division's General
Permit NCG0100000, and any requirements pertaining to wetlands under 15A NCAC 2B .0200 and 2H
.0500.
6. A set of approved plans and specifications for the subject project .must be retained by the Permittee for the
life of the project.
7. 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).
8. 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.
9. The Operational Agreement between the Permittee and the Environmental Management Commission is
incorporated herein by reference and is a condition of this Permit. Noncompliance with the terms of the
Operational Agreement shall subject the Permittee to all sanctions provided by North Carolina General
Statute 143-215.6(A) to 143-215.6(C) for violation of or failure to act in accordance with the terms and
conditions of this Permit.
Permit issued this the 11th day of December, 2001
NORTH AROLINA NMENTAL MANAGEMENT COMMISSION
Gregory I Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0003687

Permit No. WQ0003687
December 11, 2001
ENGINEER'S CERTIFICATION
Partial Final
1, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project,
Project Name
Location and County
for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the
construction such that the construction was observed to be built within substantial compliance and intent of this permit,
the approved plans and specifications, and other supporting materials.
Signature
Date
Registration No.
10

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