WQ0009634_Final Permit_19950818

otate of North Carolina
Department of Environment,
Health and Natural Resources 4 s �
Division of Environmental Management
,tames B. Hunt, Jr., Governor mom
Jonathan B. Hawes, Secretary � C
A. Preston Howard, Jr., P.E., Director C
Mr. J. J. Wehrfritz, Division Manager
Exxon Pipeline Company
Post Office Box 15609
Baton Rouge, Louisiana 70895-5609
Dear Mr. Wehrfritz:
August 18, 1995
Subject: Permit No. WQ0009634
Exxon Pipeline Company
Valve Station 109+45
Groundwater Remediation Facilities
Brunswick County
In accordance with the letter from Raymond S. Marchant dated December 2, 1994, we are
forwarding herewith Permit No. WQ0009634 as amended, dated August 18, 1995, to Exxon Pipeline
Company for the construction and operation of the subject groundwater remediation facility.
The Division would like to offer the following responses to your concerns:
Issue: Page 1 Introductory Paragraph. The effective area of the low pressure pipe distribution
area should measure 30 feet by 212 feet, not 35 feet by 212 feel, as specified in the
permit.
Response: The Division concurs that the distribution area should read 30 feet by 212 feet. The
permit will be changed appropriately.
Issue: Page 3 Section IV Item 7. Request the use of EPA Method 8020 instead of EPA
Method 602 as this method does not test for xylenes, which the contaminant on the site.
Response: References to EPA Method 602 have been replaced with EPA Method 8020.
Issue: Page 5 Section IV Item 16. Isoconcentration maps should be prepared for xylenes
instead of benzene. Request that the first set of maps use the December 1995 sampling
results.
Response: The Division concurs that xylenes be used instead of benzene. December is specified in
the permit as the sampling month for these maps. The use of December 1995 sampling
results are acceptable.
Issue: Pace 5 Section IV Item 17. Request removal of the strip chart recordings from the
permit since this type of continuous recording will not be used at the site.
Response: The references to the strip chart recording have been removed from the permit.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]$3 FAX [phone]
An Equal Opportunity Affirmative Action Employer 500% recycled/ 10% post -consumer paper

This permit shall be effective from the date of issuance until October 31, 1999, shall void Permit
No. WQ0009634 issued November 9, 1994, 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.
If you have any questions concerning the Groundwater Conditions or groundwater monitoring
requirements, please contact Mr. Brian Wagner in the Groundwater Section at [phone] ext. 404.
If you need any additional information concerning this matter, please contact Mr ;.Michael D; Allen at (919)
733-5083 ext. 547.
Sincerely,
C (�
A. Presto
rest U Howard, In,P.E.
cc: Brunswick County Health Department
ESE Environmental Science & Engineering, Inc.
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Brian Wootton, Groundwater Section, Central Office
Training and Certification Unit (no revised rating)
Facilities Assessment Unit

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
INFILTRATION GALLERY 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
Exxon Pipeline Company
Brunswick County
FOR THE
construction and operation of a 8,640 GPD groundwater remediation facility consisting of 550 gallon
surge tank, 1/2 HP centrifugal transfer pump, Shallow Tray (three (3) trays) air stripper with a 300 scfm
blower with an air/water ratio of 374 to 1, a 1/2 HP centrifugal transfer pump, two (2) 10 GPM Carbtrol
canisters, in parallel, containing approximately 200 lbs carbon each, a 1,100 gallon surge tank, 1/2 HP
centrifugal transfer pump, Hersey flow totalizer, a high water alarm system and logic circuitry, with
discharge of treated effluent to a low pressure pipe system having an effective area of 30 feet by 212 feet to
serve Exxon Pipeline Company Valve Station 109+45 in Brunswick County, with no discharge of wastes
to the surface waters, pursuant to the letter from Raymond S. Marchant dated December 2, 1994, and in
conformity with the project plan, specifications, and other supporting data subsequently fled 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 October 31, 1999, shall void Permit
No. WQ0009634 issued November 9, 1994, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARD
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 Wilmington 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.
IL 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. Once
the facility is classified, the Permittee must submit a letter to the Certification Commission
which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 5017c complete.
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 Wilmington 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.;
2

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 Erie 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. GROUNDWATER REQUIREMENTS
l . The groundwater treatment system shall consistently achieve 15A NCAC 2L groundwater
standards prior to discharge to the infiltration gallery. If the treatment system fails to
consistently achieve these standards, additional treatment units or changes in operational
methods, may be required.
2. Prior to beginning waste disposal operations, one upgradient monitor well shall be installed
to monitor groundwater quality. 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 Attachment A.
Each monitoring well shall be located at the review boundary, constructed in accordance
with this permit, and approved by the Wilmington Regional Office.
3. Monitor wells MW-2, MW-6, MW-7, MW-9, and MW-10 shall be sampled initially after
construction (and prior to waste disposal operations) and thereafter every March, June,
September, and December for the following parameters:
EPA Method 8020
4. All wells (monitoring and recovery) shall be sampled for Water Level every March, June,
September, and December. 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.
5. 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.
6. 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 April, July, October, and January.
7. 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 8020
The influent and effluent shall be sampled monthly for xylenes per EPA Method 8020.
Influent cQr effluent shall be monitored continuously for flow.
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 within 30 days of
sample collection.
8. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
3

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 Wilmington 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 professional engineer or 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.
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.
0

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 Wilmington Regional Office within 48 hours.
16. Isoconcentration (lines connecting points of equal concentration) maps in both the vertical
and horizontal directions shall be developed using the December 1995 groundwater
monitoring data for xylenes. A water level contour map must also be developed on a
quarterly basis. These maps shall be submitted along with all other monitoring data for that
period.
17. The Permittee shall retain copies of records of all monitoring information, including all
calibration and maintenance records 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.
18. 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 Wilmington 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.
19. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
I5A 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.
61

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.
VI. GENERAL CONDITIONS
1. 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.
0

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 eighteenth day of August, 1995
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
F
A. Preston)Howard, 7r., P.E., Director
Division of)Environmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0009634
7

Permit No. WQ0009634
August 18, 1995
E IN ER'S CERTIFICATION
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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