WQ0009908_Final Permit_19941230

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
1 LT.8?FA
l7EHNF1
December 30, 1994
Tim Gaylord
Dare County Regional Airport
410 Airport Road
Manteo, North Carolina 27954
Subject: Permit No. WQ0009908
Dare County Regional Airport
Terminal Site
Groundwater Remediation Facilities
Dare County
Dear Mr. Gaylord:
In accordance with your application received August 22, 1994, we are forwarding herewith Permit
No. WQ0009908, dated December 30, 1994, to the Dare County Regional Airport for the construction and
operation of the subject groundwater remediation facility.
This permit shall be effective from the date of issuance until November 30, 1999, 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.
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, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Mr. Michael D. Allen at [phone].
Sincerely,
kPreston Oard, Jr., P.E.
cc: Dare County Health Department
Engineering Consulting Services, Ltd.
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Jack Floyd, Groundwater Section, Central Office
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
GROUNDWATER REMEDIATION 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 THE
Dare County Regional Airport
Dare County
FOR THE
construction and operation of a 28,800 GPD groundwater remediation facility consisting of a recovery
well, a free -product skimmer device, an oillwater separator, a shallow tray air stripper, carbon filtration
system, free product recovery drums, two (2) injection wells, and high flow cutoff switches located in
piezometers near the injection wells, to serve the Dare County Regional Airport Terminal Site with no
discharge of wastes to the surface waters, pursuant to the application received August 22, 1994, and in
conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Environment, Health and Natural Resources and considered a part of this
permit.
This permit shall be effective from the date of issuance until November 30, 1999, 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. Mail the Certification to the Water Quality
Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. The Washington 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. 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.

4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
actions that may be required by this Division, such as the construction of additional or
replacement treatment or disposal facilities.
5. 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.
6. Any residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.
7. Diversion or bypassing of the untreated groundwater from the treatment facilities is
prohibited.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, 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 Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .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 Title 15A, Chapter 8A, .0202.
3. 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.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division of Environmental Management to insure
surface and ground water protection will be established and an acceptable sampling
reporting schedule shall be followed.
2. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone
number [phone], 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
directly to receiving waters without treatment 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.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 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. CzROUNDWATER REQUIREMENTS
1. A variance shall be granted to 15A NCAC 2C .0213(c)(2)(D) to allow a reduction of the
buffer between the injection wells and the terminal water supply well.
2. A variance shall be granted to 15A NCAC 2C .0213(c)(2)(B) to allow a reduction of the
buffer between the injection wells and the septic tank system.
3. A variance shall be granted to 15A NCAC 2C .0213(d)(1)(A) to allow a flush mounted
injection well.
4. Prior to beginning waste disposal operations, three (3) additional monitor wells, shall be
installed in the vicinity of the injection wells to monitor groundwater quality. The wells
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 Attachment A. Each monitoring well shall be located at
the review boundary, constructed in accordance with this permit, and approved by the
Washington Regional Office.
5. The new monitor wells, MW-7, MW-S, and MW-9, shall be sampled initially after
construction and prior to waste disposal operations. Monitor wells, MW-I, MW-2, MW-
3, MW-4, MW-5, MW-6, MW-7, MW-8, and MW-9, shall continue to be sampled every
January, April, July, and October for the following parameters:
EPA Method 602 including Xylenes and MTBE
EPA Method 610
pH
Water Levels
The measurement of water levels must be made prior to sampling for the remaining
parameters. 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 to
provide the relative elevation of the measuring point for each monitoring well.
The results of the sampling and analysis shall be sent to the Groundwater Section, Permits
and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59
[Compliance Monitoring Report Form] every February, May, August, and November.

6. The influent and effluent from the treatment system shall be sampled once every two (2)
weeks for the first three (3) months and monthly thereafter for the parameters specified
below:
EPA Method 602 including Xylenes and MTBE
The volume of effluent discharged to each injection well in gallons per week shall be
determined and reported on a quarterly basis.
The results of the sampling and analysis and the volume of treated groundwater shall be
sent quarterly to the Groundwater Section, Permits and Compliance Unit, P.O. Box 29535
Raleigh, N.C. 27626-0535 along with the quarterly groundwater monitoring data.
7. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
8. 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 remediation action in addition to
the penalty provisions applicable under General Statute 143-215.6A(a)(1).
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.
9. 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.
10. The Washington 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.
11. 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 state licensed land surveyor that indicates all of the following information:
a. the location and identity of each monitoring well,
b . the location of the waste disposal system,
c. the location of all property boundaries,
d. the latitude and longitude of the established horizontal control monument,
e. the relative elevation of the top of the well casing (which shall be known as the
"measuring point"), and
f. the depth of water below the measuring point at the time the measuring point is
established.
4

The survey shall be conducted using approved practices outlined in North Carolina General
Statutes Chapter 89C and the North Carolina Administrative Code Title 21, Chapter 56.
The surveyor shall establish a horizontal control monument on the property of the waste
disposal system and determine the latitude and longitude of this horizontal control
monument to a horizontal positional accuracy of +/- above shall be surveyed relative to this
horizontal control monument. The positional accuracy of features listed in a. through e.
above shall have a ratio of precision not to exceed an error of closure of 1 foot per 10,000
feet of perimeter of the survey. Any features located by the radial method will be located
from a minimum of two points. Horizontal control monument 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. The map shall also be surveyed using the
North American Datum of 1983 coordinate system and shall indicate the datum on the map.
All bearings or azimuths shall be based on either the true or NAD 83 grid meridian. If a
Global Positioning System (GPS) is used to determine the latitude and longitude of the
horizontal control monument, a GPS receiver that has the capability to perform differential
GPS shall be used and all data collected by the GPS receiver will be differentially
corrected.
The maps and any supporting documentation shall be sent to the Groundwater Section,
N.C. Division of Environmental Management P.O. Box 29535 Raleigh, N.C. 27626-
0535.
12. Upon 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, P.O. Box 29535, Raleigh, NC, 27626-0535.
13. For the initial sampling of the well as specified elsewhere in the permit, the permittee shall
submit a copy of the GW-1 Form (Well Completion Form) with the Compliance
Monitoring Form (GW-59) for that well. Compliance Monitoring Forms that do not
include copies of the GW-1 form will 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 143-215.6.
14. All components of the groundwater recovery, treatment, and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
15. The groundwater recovery, treatment and disposal system shall be inspected weekly. If it
is determined that the system is malfunctioning, all repairs should be made as soon as
possible and reported to the Washington Regional Office within 48 hours.
16. The groundwater treatment system shall consistently achieve an effluent quality that is
compliant with 15A NCAC 2L (State groundwater quality standards) prior to discharge to
the injection wells. If the treatment system fails to consistently achieve this standard,
additional treatment units or changes in operational methods, may be required.
17. Any injection of treated groundwater at pressures greater than atmospheric pressure, shall
be approved by the Washington Regional Office prior to injection at the increased pressure.
18. Isoconcentration (lines connecting points of equal concentration) maps in both the vertical
and horizontal directions shall be developed using the groundwater monitoring data for
April A water level contour map must also be developed using the April and October
monitoring data. These maps shall be submitted along with all other monitoring data for
that period.

19. The two (2) injection wells shall be constructed of 4-inch schedule PVC casing and the
screened interval of each well shall be located from 3 feet to 15 feet below land surface.
The flush mounted injection wells shall also be constructed such that the wells are properly
grouted and sealed such that the surficial aquifer is not adversely impacted.
20. Flow measurement devices shall be installed to monitor the volumes injected at each well.
21. Prior to operation of the groundwater remediation system, the permittee shall certify the
mechanical integrity of the injection wells as defined by 15A NCAC 2C .0207.
Additionally, an engineering certification shall be provided stating that the injection wells
have been constructed in accordance with 15A NCAC 2C .0200 and the conditions of this
permit. This certification shall be forwarded to the Groundwater Section Permits Unit,
P.O. Box 29535, Raleigh, NC, 27626 prior to operation of the system.
22. Pursuant to rule 15A NCAC 2C .0211(g), injection may not commence until construction
of the injection wells is completed, the permittee has submitted notice of completion of
construction to the Washington Regional Office, and the regional office staff has inspected
or otherwise reviewed the injection well and finds it in compliance with the permit. If the
permittee has not received notice from the Washington Regional. Office of the intent to
inspect or otherwise review the injection well within 10 days after the regional office has
received the notice, the permittee may commence operation of the injection wells.
23. The permittee shall retain copies of records of all monitoring information, including all
calibration and maintenance records, all original strip chart recordings for continuous
monitoring instrumentation and copies of all reports required by this permit, for a period of
at least 3 years from the date of the sample, measurement, report or application. Records
of this monitoring information shall include, but not be limited to, the following:
a. the date, exact place, and time of sampling or measurements,
b . the individual who performed the sampling or measurements,
c. the date the analyses were performed,
d . the analytical techniques or methods used, and
e. the results of any such sampling, measurements, and analyses.
24. The permittee shall report any monitoring or other information which indicates that any
contaminant may cause an endangerment to an underground source of drinking water and
any noncompliance with a permit condition of malfunction of the injection system which
may cause fluid migration outside the injection zone or area. The information shall be
provided to the Washington Regional Office orally within 8 hours of the occurrence and as
a written submission within five days of the occurrence. The written submission shall
contain a description of the noncompliance and its cause, the period of noncompliance,
including exact dates and times, and if the noncompliance has not been corrected, the
anticipated time it is expected to continue, and any steps taken or planned to reduce,
eliminate and prevent reoccurrence of the noncompliance.
V . INSPECTIONS
1. 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 groundwater recovery and treatment
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 of Environmental Management or other permitting authority, upon request.

3 . Any duly authorized officer, employee, or representative of the Division of Environmental
Management 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.
V1. GENERAI CONDITIONS
Issuance of this permit does not constitute approval for reimbursement from the Leaking
Petroleum Underground Storage Tank Cleanup Funds (15A NCAC 2P).
2. 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.
3. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
4. 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 of Environmental Management 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.
5. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c).
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 issuance of this permit does not preclude 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.
9. 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 thirtieth day of December, 1994
hE�T:11 47i�►%►i�13�]�fu►1�11:�uG�►►:[1►�11[�h]uluM[.Y.[�►i
Presto ward, Jr., P.E., Director
Division df Environmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0009908
7

Permit No. WQ0009908
December 30, 1994
I, , 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
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.

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RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION
CONTROL SYSTEMS
Name *of Facility: PO-C ffO.In l V-E4.wruAL
Atnftd-, -
-
Owner or Contact Person: Tf IA GLIL- "
Mailing Address: 416 Ale -Ply FzM
- -
County: '
Telephone:
Present Classification: NONE
New facility
Existing Facility
NPDES Per. No. NCOO Nondisc. Per. No.wwwws
Health Dept. Per. No
Rated by: 1LICOAEt Au.el,v
Telephone: -?3 -
a p3 Date: 17 -"-14
Reviewed by;
Health Dept.
Telephone:
Regional Office
Telephone:
Central Office
Telephone:
ORC:
Grade:
Telephone:
Check Classification(s): Subsurface
Spray irrigation
LandApplication
Wastewater Classification: (Circle One) (
lI III IV
Total Points:
PRCCESSE$ AND Ra.AM 2Xr12nLEZgQIPM.ENTVVFHrQH A PART OFINDU=LALP
LIZ10FRMFCLASSIFICATION-
'
PT FROM aAS51F)CATia4
SUBSURFACE CLASSI FiCAT)ON
(check all units that apply)
i septic tanks
2—pump tanks
3. siphon or pump -dosing systems
4. _sand filters
5. grease trapinterceptor
6. oillwater separators
7. -subsurface treatment and disposal:
oravity
pressure
SPRAY IPJ1rATION CLASSIFICATION
(check all units that apply)
1.
preliminary treatment (definition no. 32 }
2.
lagoons
3.
septic tanks
4__
pump tanks
5.
pumps
6.
sand filters
7.
- grease trapAnterceptor
8,,^_oil/water
separators
9.
disinfection
10-
chemical addition for
nuirientlalgae control
1 i.
spray irrigation of wastewater
Pretreatment of wastewater In excess of these components shall be rated using the point rating
system and will require an operator wlth an appropriate dual certification.
LAND APPLICAT)ONiRESIDUALS CLASSIFICATION (Applies only to permit holder)
1. — Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEV7'ATER TR EATMF_W FAC€LfTY CLAMF1CATICN
The following systems shall be assigned a Class I Gassiricalion, unless the flow is of a significant quantity or the technology is
unusually complex, to require consideration by the Commission on a case -by -care basis: (Check It Appropriate)
1 Oil/waler Separator Systems consisting only or physical separation, pumps and disposal;
2- Seplic Tank/Sand Filler Systems consisting only of septic tanks, dosing apparatus, pumps,sand tillers, disinfection
and direct discharge;
3� - Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical
treatment for algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems:
5, Groundwater Remedialion Systems consisting only of pumps, air -stripping, carbon adsorplion, disinfeclion and
disposal:
5. Fish terms with discharge to surface waters;
7. Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. SiNa e-family discharging systems with the exception of Aerobic Treatment Units, will be classified it permitted alter
July t, 1993 or it upon inspeclion by the Division, it is found that the system is not being adequately operated or
maintained. Such systems wilt be notified of the classification or tecfassification by the Commission, in w4ling.