WQ0006546_Final Permit_19930621

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
June 21, 1993
Mr. Jay McCollum, President
McAlister Oil Company
Post Office Box 483
Reidsville, North Carolina 27320
Dear Mr. McCollum:
�EHNR
Subject: Permit No. WQ0006546
McAlister Oil Company
Chilton°s Grocery
GW Remediation System
Caswell County
In accordance with your application received May 21, 1992, we are forwarding herewith Permit
No. WQ0006546, dated June 21, 1993, to McAlister Oil Company for the subject groundwater
remediation system. Please be advised, this permit does not authorize the construction of chlorination
facilities in accordance with condition IV,1. Additionally, there is concern on the part of the Division that
the system may not operate in a closed loop manner and that additional wells and treatment facilitites may
need to be constructed. If this beomes the case, the permittee shall submit a request to the Division for a
modification to this permit.
This permit shall be effective from the date of issuance until May 31., 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 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.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
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

Page 2
Mr. McCollum
McAlister Oil Company
Permit No. WQ0006546
June 21, 1993
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Ms. Angela Y. Griffin at 919/ 733-5083.
Sincerely,
A. Prest Howard, Jr., P.E.
Director
cc: Caswell County Health Department
Winston-Salem Regional Office, Water Quality Section
Winston-Salem Regional Office, Groundwater Section
Jack Floyd, Groundwater Section
Delta EnvironmentalConsultants, Incorporated
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
McAlister Oil Company
Caswell County
FOR THE
construction and operation of 2,880 GPD groundwater remediation system consisting of an activated
carbon particulate filter, a 550 gallon gasoline/water seperator tank, a 4 ft. wide by 6 ft. long by 2 ft.. deep
diffused aeration tank which will provide air stripping, an oval transfer tank 3 ft. by 4 ft. by 3 ft., and all
necessary pumps, valves, piezometers and appurtenances with the ultimate discharge of effluent to a 5 ft.
wide by 60 ft. long by 10 ft. deep infiltration gallery to serve Chilton's Grocery with no discharge to the
surface waters, pursuant to the application received May 21, 1992 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 May 31, 1998, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STAN12ARDS
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 Winston-Salem 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 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 roust 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.
!' 1a :al u. 190 0 D19KI91411 u
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 11,111, 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.
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.
!� !'MLI1 '!, ► I !
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 Winston-Salem 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.
P

IV.
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.
1. Due to the possibility of generating chlorinated halocarbons, the permittee shall not constuct
a chlorinator for disinfection. Instead an alternate means of disinfection should be pursued
if it is deemed necessary by the permittee.
2. Due to the fact that placement of the infiltrtation gallery may result in migration of
contaminants away from the recovery system, the permittee shall install carbon adsorption
to the treatment process to further decrease the levels of contaminants in the effluent.
3. The effluent quality of the groundwater remediation system shall consistently be of a
quality that complies with 15A NCAC 2L.
4. The eight monitoring wells (MW-1, 2, 3, 4, 5, 6, 7, and $) and the water supply well shall
be sampled every January, April, July and October for the following parameters:
Benzene* Ethylbenzene*
Toluene* Methyl Tert Butyl Ether*
Xylenes* pH
1, 2 dichloroethane** Water Level
* Per EPA Method 602
**Per EPA Method 601
The water level shall be deermined prior to sampling for the remaining parameters.
The results of the well sampling shall be reported to the Groundwater Section on Form
GW-59 in the month following sample collection.
5. The influent and effluent of the treatment system shall be sampled every two weeks for the
first three months and monthly thereafter for the following parameters:
Benzene Ethylbenzene
Toluene Methyl Tert Butyl Ether
Xylenes
6. The permittee shall develop isopleth contour maps for benzene, toluene, xylene,
ethylbenzene, and MTBE using the October moitoring well sampling data. These maps
should also be submitted with the quarterly monitoring data.
3

7. Any groundwater quality monitoring as deemed necessary by the Division, of
Environmental Management shall be provided
$_ All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
9. Two (2) weeks prior to system start-up, the Permittee shall notify the Division of
Environmental Management's Winston-Salem Regional Office that operation is about to
commence.
10. 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 Winston-Salem Regional Office.
11. If the data for the groundwater remediatin system does not indicate a positive trend toward
remediation of the plume, or if migration of the plume away from the recovery system
occurs, then the Division may require additional recovery, treatment, or disposal activities
to enhance remediation of the plume.
V . JNSPECTIONS
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 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.
V1. GENERAL CONDITIONS
I . 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

4. The Permittee shall obtain a well construction permit from the Winston-Salem 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 pen -nit, 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 21 st day of June, 1993
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
&_&L , ha . �Yn can-0 �- Al
A. Presto Howard, Jr. P.E., Director
Division Environmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0006546
5

Permit No. WQ0006546
June 21, 1993
Engineer's Certification
1, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
Location
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

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RATING SCALE 'FOR CLASSIFICATION OF FACILITIES
Name of Plant: M 6
Owner or Contact Person: J t'►'1 c C.. I t t
Mailing Address: vrl
County:
NPDFS Permit No. C00
T ee phone: - V2 3 YV
Nondisc. Per. No. L-> Q O C1 0 6 Sl L
lssueDate:
Expiration
Date:
Existing Facility
New Facility 4A4
Rated By:
Date:
z
Reviewed (Train. & Cert.) Reg. Office, .
Reviewed (Train. & Cert.) Central Office
ORC { w -n>J. ' �sj t,,4
Grade
Plant Class: (circle one) lJ
11 111
IV Total Points/
ITEM POINTS
(5) SECONDARY TREATMENT UNITS
{a) Carbonaceous Stage
(1)
Industrial Pretreatment Units and/or
(i)Aeration - High Purity Oxygen System .....
20
Industrial Pretreatment Program
Diffused Air System ...........
10
(see definition No. 33)
4
Mechanical Air Syslem (fixed,
y
(2)
DPSIGN FLOW OF PLANT IN GPD
floating or rotor) ...... . .......
8
(not applicable to non -contaminated cooling waters, sludge
Separate Sludge Reaeration .....
3
handling facilities for water purification plants, totally
(ii) Trickling Filter
closed cycle systems (del. No. 11), and facilities
High Rate .............
consisting only of Item (4) (d) or Items (4) (d) and (11) (d]L
Standard Rate ...............
5
0 -- 20,000..........................
5
Packed Tower...............
5
20,001 -- 50,000 ..........................
2
(i i i) Biological Aerated Filter or Aerated
50,001 - 100,000 ...................... I ...
3
Biological Filter ......................
10
100,001 -- 250,000 ..........................
4
(iv) Aerated Lagoons .....................
10
250,0D1 -- 500,000................
500,001-•1,000,000 ........... . ..............
8
(v) Rotating Biological Conlactors ..........
10
1,000,001 -- 2,000,000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
(v i) Sand Filters-
200,000 gpd capacity up to a
internitlent biological .. .. -
2
maximum of 30
recirculating biological - _ ..
3
Design Flow (gpd) _ 1
(vil) Stabilization Lagoons ....... . ...........
5
(3)
PRELIMINARY UNITS (see definition no. 32)
(viii)Clarifier ..............................
5
(a) Bar Screens ................................
1
(ix) Single stage system for combined
o r
carbonaceous removal of BOD and
(b) Mechanical Screens, Static Screens or
nirogenous removal by nitrification
Comminuting Devices ........... .............
2
(see def. No. 12) (Points for this item
(c) Grit Removal ...............................
1
have to be in addition to items (5) (a)
or
(i) through (5) (a) (viii) .................
8
(d) Mechanical or Aerated Gril Removal ...........
2
(x) Nutrient additions to enhance BOD
(e) Flow Measuring Device .......................
1
removal ...............................
5
or
(xi) Biological Culture ('Super Bugs') addition
(1) instrumented Flow Measurement ..............
2
to enhance organic compound removal .....
5
(g) Preaeration................................
2
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System .....
20
(h) Influent Flow -Equalization ...................
2
Diffused Air System ...........
10
(i) Grease or Oil Separators - Gravity ..........
Mechanical Air System (fixed,
Mechanical ..........
floating, or rotor) ...... ......
8
Dissolved Air Flotation,
8
Separate Sludge Reaeration .....
3
Q) Prechlorinalion ..............................
5
(ii) Trickling Filler -
High Rate ..............
7
(4)
PRIMARY TREATMENT UNITS
Standard Rate ............
5
(a) Septic Tank (see definition no. 43) . I ............
2
Packed Tower ............
5
(b) Imhoff Tank ..................................
5
(iii) Biological Aerated Filter or Aerated
(c) Primary Clarifiers ............................
5
Biological Filler .........................
10
(d) Settling Ponds or Settling Tanks for inorganic
(iv) Rotating Biological Contactors ............
10
Non -toxic Materials {sludge handling facilities
(v) Sand Filler -
for water purification plants, sand, gravel,
intermittent biological ... .....
2
stone, and other mining operations except
recirculating biological ........
3
recreational activities such as gem or gold
(v i) Clarifier ...................
mining) ......................................
2

(6) TERTIARY OR ADVANCED TREATMENT UNIT
(10) CHEr ICAL ADDITION SYSTEM (S) (See definition No. 9)
(a)
p--tivated Carbons Beds - .
r}
('1
(not applicable to chemical additions rated as item
without carbon regeneration ..................
(3) (j), (5) (a) (xi), (6) (a), (6) {b), (7) (b), (7) (e},
with carbon regeneration . . ....... . ..........
is
(9) (a), (9) (b), or (9) (c) 5 points each: List:
(b)
powdered or Granular Activated Carbon Feed -
5
Without carbon regeneration .................
5
5
with carbon regeneration .... .............
1
(c)
Air Stripping ........................ ..
5
(d)
Denitrification Princess (separate process) .... .
10
(e)
Eleoirodialysis ..............................
5
(11) MISCELLANEOUS UNITS
(0
Foarn Separation ... . ................... . .....
5
(a) Holding Ponds, Holding Tanks or Settling Ponds
19)
ion Exchange ................................
5
for Organic or Toxic Materials including wastes
(h)
Land Application of Treated Effluent
from mining operations containing nitrogen and/or
(see definition no. 22b) (not applicable for
phosphorous compounds in amounts significantly
sand, graves, stone and other similar mining
greater than is common for domestic wastewater ..........
4
operations)
(b) Effluent Flow Equalization (not applicable to storage
(i) on agriculturally managed siles (See def.
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-agriculturatly
inherent in land application systems .......................................
5
managed sites (includes rotary distributors
(d) Pumps ......... :...... ............... ....... ._....................... ............»............
19
and similar fixed nozzle systems) ...........
4
(e) Stand -By Power Supply..................................................................
3
(iii) by subsurface disposal (includes low pressure
(i) Thermal Pollution Control Device .............................................
3
pipe systems and gravity systems except at
plants consisting of septic lank and nitrifica-
tion lines only) ... . ...................... . ..
4
TOTAL POINTS Z_
(i)
Microscreens..................................
5
(j}
Phosphorus Remoaal by Biological Processes
CLASSIFICATION
(See def. No, 26) ............................
20
(k)
Polishing Ponds - without aeration .......
2
Class 1. ................. ........... . ....... . ............... 5 - 25 Points
with aeration ..........
5
Class 11.............................. ............... ... __. 26- 50 Points
(I)
Post Aeration - cascade ..............
0
Class III ....................................................... 51- 65 Points
diffused or mechanical ...
5
Class IV .................................... _--- ...------ 66- Up Points
(m)
Reverse Osmosis ...............................
5
(n)
Sand or Mixed -Media Fillers - 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 II.
) SLUDGE TRF—ATMENT
(a)
Sludge Digestion Tank - Heated ...............
10
Aerobic ...............
5
Unheated ...... .......
3
(b)
Sludge Stabilization (chemical or thermal) ...... .
5
(c)
Sludge Drying Beds - Gravity .................
2
Vacuum Assisted .......
5
(d)
Sludge Elulrialion ... . .........................
5
(e)
Sludge Conditioner (chemical or thermal) ...... - .
5
(1)
Sludge Thickener (gravity) ................... . . .
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) .........
8
(h)
Sludge Gas Utilization (including gas storage) ....
2
(i)
Sludge Holding Tank - Aerated ................
5
Non -aerated ............
2
{j)
Sludge incinerator - (not including activated
carbon regeneration) .....
10
(k)
Vacuum Filler, Centrifuge or Filler Press or other
similar dewalering devices ........... I ........
10
,S) 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 _ ..
1 0
-by contracting to a land application operator who
holds the land application permit ................
2
-land appiication of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
(c)
Landfil)ed (burial) ......... . . ..................
5
(9) DISINFECTION
(a)
Chlorination .. . .................... . .....
(b)
Dechiorinalion .................... . .. .
(c)
Ozone ..............................
5
(d)
Radiation ......................•...
5
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
Ill.
in -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise, discharges of wastewater from residences
having a design flow of 1,000 gpd or less, shall not be subject to
rating.
ADDITIONAL COMMENTS: