WQ0005979_Final Permit_19920731

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Preston Howard, Jr., P.E.
William W. Cobey, Jr., Secretary Acting Director
July 31, 1992
Mr. Calvin B. Wells, President
North Carolina Natural Gas Corporation
Post Office Box 909
Fayetteville, North Carolina 28302-0909
Subject: Permit No. WQ0005979
North Carolina Natural Gas Corp.
NCNG Goldsboro
Groundwater Remediation System
Wayne County
Dear Mr. Wells:
In accordance with your application received December 23, 1991, we are forwarding herewith
Permit No. WQ0005979 dated July 31, 1992, to North Carolina Natural Gas Corporation for the
construction and operation of the subject groundwater remediation with enhanced biodegradation. Please
be advised that this permit contains conditions and monitoring that includes the biodegradation nutrients to
prevent any contravention of groundwater standards.
This permit shall be effective from the date of issuance until June 30, 1997, 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 to you, you have
the right to request an adjudicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.Q. Box 11666,
Raleigh, NC 27604. Unless such demands are made this permit shall be final and binding.
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/761-2351
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Mr. John Seymour at 919/ 733-5083.
a
YA. Preston H' ward,
cc: Wayne County Health Department
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Jack Floyd, Groundwater Section
WE -A, Inc.
Facilities Assessment Unit
Training and Certification

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
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
North Carolina Natural Gas Corporation
Wayne County
FOR THE
construction and operation of a 12 GPM groundwater remediation system consisting of 4 recovery wells
with submersible pumps, a 12 GPM three tray air stripper with 600 cfm blower and high water alarms, a
7.5 gallon nutrient feed tank with metering pump (nitrate and phosphate) for enhanced biodegradation, a
water heater to raise water temperature to 100 degrees F, three 100 square foot infiltration galleries with
two located over former tank sites feed at 2 GPM and the third feed at 8 GPM, and all associated valves,
piping, controls, alarms, flow meters, and appurtenances to serve North Carolina Natural Gas Corporation
Goldsboro Facility with no discharge to the surface waters, pursuant to the application received December
23, 1991, 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 June 30, 1997, and shall be subject to
the following specified conditions and limitations:
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 and the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
2. The Washington Regional Office, telephone number 919/ 946-6481 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 absorb 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 as
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 sludge generated from these treatment facilities must be disposed of 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.
MMMUSITCOMYRIUMIN1XV4 IRM IMMM all M a 1011i3 FUN
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 50% 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.
u# #: ► :►1 '#� # ►TITu
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 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 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.

IV.
I.
2.
3
4
S.
Gol
b. Any process unit failure, due to known or unknown reasons, that render 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 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.
All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
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:
Benzene NO3
Toluene NO2
Ethylbenzene Orthophosphate
Xylenes MTBE
In order to track nutrient movement in groundwater, the individual recovery wells must be
sampled for the following parameters:
Phosphate NO3
The four monitoring wells (MW-1, MW-2, MW-3, and MW-4) shall be sampled monthly
for the following parameters:
Benzene
Toluene
Ethylbenzene
Xylenes
Sodium
Water Level
NO3
NO2
Orthophosphate
MTBE
PH
The water level shall be made prior to sampling for the remaining parameters.
The results of the sampling and analysis shall be sent to the Groundwater Section on Form
GW-59, within 30 days of sample collection.
Two (2) weeks prior to system start-up, the Permittee shall notify the Division of
Environmental Management's Washington Regional Office that operation is about to
commence.
7. 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.

8. The groundwater treatment system must achieve at least a 95% treatment efficiency. If the
treatment efficiency falls consistently below 95% then additional treat ent facilities may be
required.
9. Prior to system operation, the permittee must establish the background concentration for
phosphate.
10. Any additional groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
1. Adequate inspection, maintenance and cleaning shall be provided by the Pemiittee 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 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 of Environmental Management or other permitting authority.
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 and facility at any reasonable time for the
purpose of determining compliance with this permit; may inspect or copy any records that
must be kept under the terms and conditions of this permit; or may obtain samples of
groundwater, surface water, or leachate.
1. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans, specifications and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. 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.
4. The Pemmittee shall obtain a well construction permit from the Washington Regional Office
prior to construction of the recovery wells.
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 143-215.6A to 143-215.6C.
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 15 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 31 st day of July, 1992
CAROLINA
`�`)�reston H
Division of En
By Authority of the
Permit No. WQ0005979
AL MANAGEMENT COMMISSION
Management Commission

Permit No. WQ0005979
July 31, 1992
Engineer'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 the approved plans and specifications.
Signature
Date
Registration No.

RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: /W-f� rav-_Ijma N�4�ur- % Cvs (1,rIds or0
Owner or Contact Person: Mv. Ca v;rt B W s
Mailing Address: E 0, Ba,r 9a9 _, N� zeWryI'!/e 2
County: WaY11f _ Telephone:
NPDES Permit No. NC00 Nondisc. Per. No. k-s oco sa79
IssueDate: c 7/�J/q>- Expiration Date:T,/� „!
Existing Facility New Facility
Rated By:_O', Sel�G�,� _ date: c,7
Reviewed (Train. & Cert.) Reg. Office`
Reviewed (Train. & Cert.) Central Office
ORC Grade
Plant Class: (circle one) 0 II
ITEM POINTS
(1) Industrial Pretreatment Units and/or
Industrial Pretreatment Program
(see definition No. 33)
4
(2) DESI;^j,FLOW OF PLANT IN GPD
(not applicable to non -contaminated cooling waters, sludge
handling facilities for water purification plants, totally
closed cycle systems (def. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d) and (11) (d))
0 - 20,000..........................
1
20,001 -- 50.000..........................
2
50.001 -- 100.000..........................
3
100,001 - 250.000..........................
4
250.001 -- 500,000..........................
5
500,001--1,000,000..........................
6
1,000,001 -- 2,000,000 ........................
10
2,000.001 (and up) - rate 1 point additional for each
200.000 gpd capacity up to a
maximum of 30
Design Flow (gpd) :
(3) PRELIMINARY UNITS (see definition no. 32)
(a) Bar Screens ................................
i
or
(b) Mechanical Screens, Static Screens or
Comminuting Devices ........................
2
(c) Grit Removal ...............................
1
or
(d) Mechanical or Aerated Grit Removal ...........
2
(e) Flow Measuring Device .......................
1
a
(i) Instrumented Flow Measurement ..............
2
(g) Preaeralion................................ 2
(h) Influent Flow•Equatization ................... 2
(t) Grease or Oil Separators - Gravity .......... 2
Mechanical .......... 3
Dissolved Air Flotation. 6
G) Prechlorination .................. :........... 5
PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) .............. 2
(b) Imhoff Tank .................................. 5
(c) Primary Clarifiers ............................ 5
(d) Settling Ponds or Settling Tanks for Inorganic
Nontoxic Materials (sludge handling facilities
for water purification plants, sand, gravel.
stone, and other mining operations except
recreational activities such as gem or gold
III IV Total Points 2?—
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System .... .
Diffused Air System ...........
Mechanical Air System (fixed,
floating or rotor) ..............
Separate Sludge Reaeration .... .
(ii) Trickling Filter
High Rate ...................
Standard Rate ...............
Packed Tower ...............
(iii) Biological Aerated Filter or Aerated
Biological Filter ......................
(iv) Aerated Lagoons ..................... .
(v) Rolating Biological Contactors ..........
(vi) Sand Filters-
interrnittenl biological .... .
recirculating biological .... .
(vu) Stabilization Lagoons ...................
(viii)Clarifier ..............................
(Ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see del. No. 12) (Points for this item
h8ve to be in addition to items (5) (a)
n through (5) (a) (viuj .................
(x) Nutrient additions to enhance 800
removal...............................
(xi) Biological Culture ('Super Bugs") addition
to enhance organic compound removal .... .
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
Diffused Air System ...........
Mechanical Air System (fixed,
floating, or rotor) ...... ......
Separate Sludge Reaeralion .....
(If) Trickling Filter -
High Rate ............. .
Standard Rate ............
Packed Tower............
(Ili) Biological Aerated Filter or Aerated
Biological Filter ........................ .
(iv) Rotating Biological Contaclors ............
(v) Sand Filter -
intermittent biological ....... .
recirculating biological ....... .
(vi) Clarifier ...............................
20
10
a
3
7
5
5
10
10
10
2
3
5
a
5
5
20
10
6
3
7
5
5
10
10
2
3
5

(Ei rr:WIFIARY OR ADVANCED TREATMENT UNIT
(10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
clivated Carbons Beds -
(not applicable to chemical additions rated as itern
without carbon regeneration .................. 5
b). , . , e
(3) G), (S) (a) (xi) C6) fa)C5) Cb)(7) C (7)
with carbon regeneration .................... 15
(S) (a}, {9) (b), or {9) (c} 5 points each: list:
(b)
Powdered or Granular Activated Carbon Feed -
without carbon regeneration .......... . ...... 5j
44
with carbon regeneration .................... 15
5
(c)
Air Stripping . . .. . ........................ 91
$
(d)
penitrification Process (separate process) ..... 10
(e)
Electrodralysis ........................... . . . 5
(11) MISCELLANEOUS UNITS
(0
Foam Separation ............................. 5
(a) holding Ponds, holding Tanks or Settling Ponds
(g)
ton Exchange ................................ 5
for Organic or Toxic Materials including wastes
(h)
Land Application of Treated Elhuenl
from mining operations containing nitrogen and/or
(see definition no. 22b) (not applicable for
phosphorous compounds in amounts significantly
sand, gravel, stone and other similar mining
greater than is common for domestic wastewater .......... 4
operations)
(b) Elfluent Flow Equalization (not applicable to storage
(i) on agrici Rurally managed sites (See del.
basins which are inherent in land application systems). 2
No. 4) ................................... 10
(c) Stage Discharge {not applicable to storage basins
(ii) by high rate infiltration on non -agriculturally
inherent in land application systems ....................................... 5
managed siles (includes rotary distributors
(e) - _.. -_-_ r �
and similar fixed nozzle systems) ........... 4
Stand-By...ower._.... � F _ .._......__...»«...... 3
{e} Stand -By Power Supply..........__......., _
(iii) by subsurface disposal (includes low pressure
(f) Thermal Pollution Coft-ol Device:_ ........................................ 3
pipe systems and gravity systems except at
plants consisting of septic lank and nitrifica-
tion fines only) .............................
TOTAL POINTS Z-Z-
{�
Microstreens................ ... ............. 5
(j}
Phosphorus Removal by Biological Processes
CLASSIFICATION
(k)
(See def. No. 26) ............................ 20
Polishing Ponds - without aeration ....... 2
Class 1 _ - 5 - 25 Points
with aeration .......... 5
ss ll. _. _ _ _ 26- 50 Points
(I)
Post Aeration - cascade .............. 0
Class 51- 65 Points
diffused or mechanical . _ . 5
Class 66- Up Points
rm) Reverse Osmosis ............................... 5
Sand or Mixed -Media Filters - low rate ........... 2
Facilities having a rating of one through four points, inclusive,
high rate .......... 5
do not require a certified operator. Classification of all other
(o)
Treatment processes for removal of metal or
facilities requires a comparable grade operator in responsible
cyanide .................................... 15
charge.
(p)
Treatment processes for removal of toxic
materials other than metal or cyanide ..... _ . , . 15
Facilities having an activated sludge process will be assigned
a minimum classification of Class 11.
SLUDGE TREATMENT
Facilities having treatment processes for the removal of metal
(a) Sludge Digestion Tank - Heated ...............
10 or cyanide will be assigned a minimum classification of Class It.
Aerobic .. . ............
5
Unheated .............
3 Facilities having treatment processes for the biological removal
5
(b) Sludge Stabilization (chemical or thermal) .......
of phosphorus wilt be assigned a minimum classification of Class
(c) Sludge Drying Beds - Gravity .................
2 Ill.
Vacuum Assisted .......
5
(d) Sludge Elulriation .............................
5 In -plant processes and related control equipment which are an
(e) Sludge Conditioner (chemical or thermal) ........
5 inlegraf part of industrial production shall not be considered waste
(1) Sludge Thickener (gravity) ......................
5 treatment. Likewise, discharges of wastewater from residences
(g) Dissolved Air Flotation Unit
having a design flow of 1.000 gpd or less, shall not be subject to
(not applicable to a unit rates as (3) @ .........
8 rating.
(h) Sludge Gas Utilization (including gas storage) ....
2
(i) Sludge Holding Tank- Aerated ................
5 ADDITIONAL; COMMENTS -
Non -aerated ............
2
(j) Sludge Incinerator - (not including activated
carbon regeneration) .....
10
(k) Vacuum Fitter, Centrifuge or Filter Press or other
similar dewalering devices ....................
ID
15) SLUDGE DISPOSAL (including incinerated ash)
(a) Lagoons ........................................
2
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit ..
10
-by contracting to a land application operator who
holds the land application permit ................ 2
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge•is generated .........
10
(c) Landfilled (burial) ............................
5
(9) DISINFECTION
(a) Chlorination .............................
5
(b) Dechtorinalion........................
5
(c) Ozone ..............................
5
,... M—C- ,.,., ...... . . . . . ...........
5