WQ0005906_Final Permit_19980501

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
May 1, 1998
Jan A. Kneib, Environmental Manager
E. I. DuPont de Nemours & Co., Inc.
Post Office Box 800
Kinston, North Carolina 28502-0800
Dear Mr. Kneib:
VIVA
1 � •
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. WQ0005906
E. 1. DuPont de Nemours & Co., Inc.
Kentec Site
Groundwater Remediation Facilities
Lenoir County
In accordance with the amendment request received April 15, 1998, we are forwarding herewith Permit No.
WQ0005906, dated May 1, 1998, to E. I. DuPont de Nemours & Co., Inc. for the continued operation of the subject
groundwater remediation facility.
This permit is being amended as requested to delete Groundwater Condition No. 117 which referred to the
Groundwater Compliance Boundary and Review Boundary. This condition is not required since this is a pump and
treat permit and not a disposal permit.
This permit shall be effective from the date of issuance until February 29, 2003, shall void Permit No.
WQ0005906 issued March 5, 1998, 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. Ken Pohig in the Groundwater Section at [phone]. If you need any
additional information concerning this matter, please contact Mr. Michael Alle at [phone] extension 547.
Sincerely,' i
a �
_A. Preston Howard, Jr., P.E.
cc: Lenoir County Health Department
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit (no revised rating)
Non -Discharge Compliance/Enforcement Unit
Po Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] Fax [phone]
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NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT 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
E. I. DuPont de Nemours & Co., Inc.
Lenoir County
FOR THE
continued operation of a 20,000 GPD groundwater remediation system with 2,000 GPD being reused in the
Kentec Facility and the remaining flow being collected into a 20,000 gallon railcar and being transported to the E.
I. DuPont de Nemours & Co., Inc.'s Kinston Wastewater Treatment Facility (NPDES Permit No. NC0003760).
The Kentec Facility consists of approximately 2,605 linear feet of 6-inch perforated groundwater interceptor
piping, two simplex pump stations equipped with Myers 1 HP pumps and high water alarms, a sand filter, two
PAL 20 cartridge filters, two PAL 30 cartridge filters, a 600 gallon surge/pretreatment tank, an Ultrox F-325
UV/oxidation reactor with a 14 pound ozone generator and peroxide feed with ultraviolet light, two 165 pound
granular activated carbon canisters, and two 16,000 gallon holding tanks.
The groundwater remediation facility will serve E. I. DuPont de Nemours & Co., Inc., with no discharge of
wastes to the surface waters, pursuant to the amendment request received April 15, 1998, 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 February 28, 2003, shall void Permit No.
WQ0005906 issued March 5, 1998, and shall be subject to the following specified conditions and Iimitations:
L GENERAL CONDITIONS
This permit shall become voidable unless the subject groundwater remediation and pump and haul
activities are carried out in a manner which has been approved by this Division.
2. This permit is effective only with respect to the nature and volume of wastes described in the application
and other supporting data.
3. The facilities shall be properly maintained and operated at all times.

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
Water Quality (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.
5. No type of remediated groundwater other than that from E. I. DuPont de Nemours & Co., Inc.'s Kentec
Site shall be included in the pump and haul activities.
6. This permit shall become voidable unless the agreement between E. 1. DuPont de Nemours & Co., Inc.,
and CSX Transportation or Conoco Transportation for the transportation of the remediated groundwater is
in full force and effect.
7. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall cease operation of all pump and haul activities and take immediate corrective actions,
including those that may be required by this Division.
The groundwater collected by this system shall be treated in the E. I. DuPont de Nemours & Co., Inc.'s
Kinston Wastewater Treatment Facility (NPDES Permit No. NC0003760 prior to being discharged into
the receiving stream.
9. The remediated groundwater from the E. I. DuPont de Nemours & Co., Inc.'s Kentec Site will be
accumulated in a 20,000 gallon railcar and shall be sampled and analyzed in accordance with Condition I
22 of the subject permit prior to being conveyed through any primary treatment components at the E. I.
DuPont de Nemours & Co., Inc.'s Kinston Wastewater Treatment Facility. The introduction rate shall not
exceed 20,000 gallons in a 24 hour period.
10. The Washington Regional Office, telephone number [phone], shall be notified at least forty-eight
(48) hours in advance of operation of the pump and haul activities 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.
11. The Permittee is liable for any damages caused by a spill or failure of the pump and haul operations.
12. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper
operation of the subject facilities.
13. The Permittee or his designee shall inspect the groundwater remediation and collection 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 Iog 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 as long as the pump and haul activities are being conducted and
shall be made available to the Division or other permitting authority, upon request.
14. Any duly authorized officer, employee, or representative of the Division may, upon presentation of
credentials, enter and inspect any property, premiscs or place on or related to the groundwater treatment
and pump and haul facilities 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.

15. An accurate record of the pump and haul activities must be maintained by the Permittee, indicating:
a. date groundwater is removed from the facility,
b. name of facility from which groundwater is removed,
c. name of facility receiving groundwater,
d. volume of groundwater removed, and
e. status of permanent disposal option.
These records shall be submitted monthly to the Washington Regional Office on or before the fifteenth
(15) day of the following month.
I6. 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.
17. 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.
18. The Permittee shall provide for the installation and maintenance of an audible and visual high-water
alarm on all storage and pumping facilities associated with this pump and haul operation.
19. A copy of the approved plans and specifications shall be maintained on file by the Permittee for the life of
the project.
20. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number (919) 946-
6481, as soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of any of the following:
a. Any 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.; or
b. Any failure of a pumping station, sewer line, etc. resulting in a by-pass directly to receiving waters
without treatment of all or any portion of the influent to such station or facility.
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.
21. 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).
22. Each railcar shall be sampled for the following parameters:
Parameter
Monthly Average Railcar or Tanker
Railcar or Tanker Concentration` Concentration*
1, 1 -Diebloroethane (DCA) 14 µg/liter 21 µg/liter
1, 1 -Dichloroethylene (DCE) 14 µg/liter 2I ' µg/liter
1,4-Dioxane 200 µg/liter 300 µg/liter

The following concentrations were determined from the Treatability Statement outlined in the"Kentec
Corrective Action Plan," dated July 11, 1991, prepared by CH2M Hill for E. 1. DuPont de Nemours &
Co., Inc.:
1,1-Dichloroethane (DCA) 7 µg/liter
1, 1 -Dichloroethylene (DCE) 7 µg/liter
1,4-Dioxane - 100 gg/liter
23. 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 Iimitations
as it may deem appropriate.
24. This permit may be modified, or revoked and reissued to incorporate any conditions, limitations, and
monitoring requirements the Division deems necessary in order to adequately protect the environment and
public health.
II. GROUNDWATER COMPLMNCE.SCHEDULE
1. Within sixty (60) days of reissuance of the permit, the Permittee shall submit two original copies of a
scaled topographic map (scale no greater than I": 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 all monitoring wells (specifically, the A and B components of the
monitoring wells: i.e., MW-4A and MW-413, MW-7A and MW-7B, MW-10A and MW-IOB, MW-
1 IA and MW-11B, and MW-14A and MW-14B),
b, the location of all components of the waste disposal system including the groundwater interceptor
trench,
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 +/- 10
feet. All other features listed in a. through e. 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 I 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
Water Quality P.O. Box 29578 Raleigh, N.C. 27626-0578.

2. E. 1. DuPont de Nemours & Co., Inc. shall submit all progress reports and data required by the Division
established under the provisions of this permit and/or implementation of the Remedial Action Study
(RAS) to the Washington Regional Office on a quarterly basis, which will begin with first day of the
month following the month the RAS was placed into operation.
3. E. I. DuPont de Nemours & Co., Inc. shall operate and maintain the facility so as to minimize the impact
of groundwater contamination.
4. E. I. DuPont de Nemours & Co., Inc. agrees that this permit shall pertain only to the source and property
identified as the Kentec Site located in Lenoir County which is owned by E. I. DuPont de Nemours &
Co., Inc. Unless an applicable Special Order or permit has been issued by the Commission, violations of
groundwater standards resulting from additional sources for which E. I. DuPont de Nemours & Co., Inc.
is responsible may subject E. 1. DuPont de Nemours & Co., Inc. to all sanctions provided by N.C. General
Statutes 143-215.2 and 143-215.6.
5. Pursuant to the terms of the Corrective Action Plan (CAP), E. I. DuPont de Nemours & Co., Inc. shall
~ continue to operate the wastewater collection (from the groundwater interceptor trench), treatment and
disposal system. The system will continue to operate until the groundwater collection in the trench
reaches the target clean-up levels specified in the approved CAP.
6. Any additional groundwater quality monitoring, as deemed necessary by the Division,'shall be provided.
Permit issued this the first day of May, 1998
A
NORTH CA OLINA E VIROI�MENTAL MANAGEMENT COMMISSION
—A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0005906