NCG510459_Regional Office Historical File Pre 2018 (2)

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor m G. , Secretary
��° � /zALfor
moo
AMD !Ross RESOURCE Jr.,Jr.ES1/Ill� � OFF!(
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September 14, 2005 .
Mr. C. Martin Pearson SEP ? 9 200)
Gaston Merchants Oil Company •
1513 North Chester Street
Gastonia, North Carolina 28053 •
Subject: Rescission of ertificate of CoveraeG510459
Omni Mart #32 remediation site
Gaston County
Dear Mr. Pearson:
Division staff has confirmed that the subject permit is no longer required, as groundwater remediation
is no longer required at this site. Therefore, in accordance with your request, Certificate of Coverage
NCG510459 is rescinded, effective immediately.
If in the future you wish to again discharge wastewater from this site to the State's surface waters,
you must first apply for and receive a new NPDES permit. Discharge of wastewater without a valid
NPDES permit will subject the responsible party to a civil penalty of up to $25,000 per day.
If you have questions about this matter, please contact Charles Weaver of my staff at the telephone
number or address listed below.
Sincerely,
r Ian W. Klimek
cc: Central Files 1�'
Mooresville Regional Office/Michael Parker:
NPDES Permit file
Fran McPherson, DWQ Budget Office
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 One
512 North Salisbury Street,Raleigh,North Carolina 27604 NorthCarolina
Internet:h2 state.nc.us
Phone: [phone],extension 511/FAX [phone] Naturally
[e-mail]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

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SOC PRIORITY PROJECT: Yes_No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Aisha Lau
Date: January 30, 2001
NPDES STAFF REPORT AND RECOMMENDATION
County: Gaston
Permit No. NCG510459
MRO No. 00-105
PART I - GENERAL INFORMATION
1. Facility and Address: Omni Mart# 32
Gaston Merchants Oil Company
1513 North Chester Street
Gastonia,North Carolina 28052
2. Date of Investigation: 01-26-2001
3. Report Prepared By: Samar Bou-Ghszale, Env. Engineer I
4. Persons Contacted and Telephone Number: Mr.Jim Kelly, Environmental Consultants,tel#
[phone].
5. Directions to Site: From the intersection of I-85 and US Hwy 321 in the City of Gastonia,
travel south on US Hwy 321 approximately 0.4 mile. Omni Mart# 32 is located on the
east (left) side of US Hwy 321.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 16' 39" Longitude: 81° 11' 15"
Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on
map.
USGS Quad No.: F 14 SE USGS Name: Gastonia Norh,NC
7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:

•
8. Topography (relationship to flood plain included): The site is not in a flood plain.
9. Location of nearest dwelling: The nearest dwelling is within 600 feet of the remediation
facilities.
10. Receiving stream or affected surface waters: Unnamed tributary to Long Creek
a. Classification: C
b. River Basin and Subbasin No.: Catawba and 03-08-36
c. Describe receiving stream features and pertinent downstream uses: The receiving
stream is approximately 6 feet wide with a sandy bottom. General "C"
classification uses downstream.
PART II -DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.0144MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater treatment facility? N/A
c. Actual treatment capacity of the current facility (current design capacity)? N/A
d. Date(s) and construction activities allowed by previous Authorizations to
Construct issued in the previous two years: None.
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The existing groundwater remediation facilities consist of an
oil/water separator, diffused aeration and carbon adsorption.
f. Please provide a description of proposed wastewater treatment facilities: N/A.
g. Possible toxic impacts to surface waters: Provided effluent limits of the General
Permit are met,there are no expected toxic impacts to surface waters.
h. Pretreatment Program(POTWs only): N/A.
2. Residuals handling and utilization/disposal scheme: N/A.
a. If residuals are being land applied, please specify DWQ
b. Permit No: N/A
NPDES Permit Staff Report
Page 2

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•
c. Residuals stabilization:N/A
d. Landfill:N/A
e. Other disposal/utilization scheme (specify):N/A
3. Treatment plant classification (attach completed rating sheet): Class I, see attached
rating sheet.
4. SIC Code(s): 5541
Primary: 66 Secondary:
Main Treatment Unit Code: 56000
PART III -OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? N/A.
2. Special monitoring or limitations (including toxicity)requests: None.
3. Important SOC,JOC or Compliance Schedule dates: (please indicate) N/A.
4. Alternative Analysis Evaluation: Has the facility evaluated all of the non-discharge
options available. Please provide regional perspective for each option evaluated. N/A.
5. Air Quality and/or Groundwater concerns or hazardous materials utilized at this facility
that may impact water quality, air quality or groundwater? No hazardous material, air
quality, or groundwater concerns. Facility only discharges treated groundwater.
6. Other Special Items: Used carbon vessels are being stored on site. Method of disposal of
these vessels needs to be provided to DWQ prior to a permit issuance.
PART IV-EVALUATION AND RECOMMENDATIONS
Gaston Merchants Oil Company Company has reapplied for coverage under General
Permit No. NCG510000. The previous permit NCG510050 was rescinded in 1996 due to the
shutdown of the remediation system as part of the classification of the site. The site has recently
been reclassified as an intermediate risk site by the Division of Waste Management and,
NPDES Permit Staff Report
Page 3

therefore,requires groundwater remediation . The petroleum contaminated groundwater resulted
from a former underground storage tank system at the site.
It is recommended that the NPDES Permit be issued pending review by the Groundwater
section.
Signature of Report eparer
•
Water Qua14'Regional Supervisor
1,
Date
NPDES Permit Staff Report
Page 4

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State of North Carolina >� oapr, op
• Department of Environment /Iv I�. o vp
NATURALSVR
and Natural Resources 9
Division of Water Quality OCT 31 2000
Hunt, Jr. Governor I � CDENR
James B. � �Al MA 0
Bill Holman, Secretary EEwSSILU REIIQMAI liFflp NORTH CAROLINA DEPARTMENT OF
Kerr T. Stevens, Director NVIRONMENT AND NATURAL RESOURCES
October 24, 2000
Mr. C. Martin Pearson
Gaston Merchants Oil Company 2 R,- vic"
1513 N. Chester St. "r c
Gastonia, NC 28053 clt � ., /
Q ft
Subject: NPDES General Permit Application
Application Number NCG510459
Omni Mart#32
Groundwater Remediation
Gaston County
Dear Mr. Pearson:
The Division of Water Quality's Stormwater and General Permits Unit hereby acknowledges
receipt of your Notice of Intent (Application Form) for coverage under NPDES Permit Number
NC510000 on October 20, 2000. This NOI has been assigned the application number shown
above.
Please be aware tha `the Division's regional office, copied below, must provide
recommendations from the Regional Supervisor prior to final action by the Division. I am, by
copy of this letter, requesting that our Regional Office Supervisor prepare a staff report and
recommendations regarding this discharge. Since this facility was previously issued a COC
number of NCG510368 back on October 28, 1996 which has since been rescinded, the staff
report that was prepared then could just be reviewed for current applicability and a new cover
memo prepared.
You should be aware that the review process generally takes 90 days from the date your complete
submittal is received. This 90-day process may be extended if additional information is required.
If you have any questions, please contact me at [phone], extension 578.
Sincerely,
Aisha H. Lau
Environmental Engineer
cc: Mooresville Regional Office
Stormwater and General Permits files
Petroleum Environmental Consultants, Inc., P.O. Box 26413, Charlotte, NC 28221 C-
-Attn: Mr. Jim Kelly
1617 Mail Service Center, Raleigh, NC 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10%post-consumer paper

PETROLEUM ENVIRONMENTAL CONSULTANTS,INCORPORATED
P.Q BOX 26413 CHARLOTTE,N.C.28221
704-335-8801 FAX:[phone]
•
October 12, 2000
Mr. William C. Mills, PE
Stormwater and General Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: Notice of Intent for General NPDES Permit N°NCG51000Q ;
Gaston Merchants Oil Company I )r( C
Omni Mart #32 { 1 � '
1390 N. Chester Street (US Hwy. 321)
OCT l 7 2000 ! —
Gastonia, Gaston County, NC t;_?tR - WATER QUALITY
POINT SOURCE BRANCH
Dear Mr. Mills:
On behalf of Gaston Merchants Oil Company (GMO , leum Environmental Consultants,
Inc. (PEC) is requesting renewal of NPDES Permit °NCG510368 fo the referenced site. The
discharge of less than 14,400 gallons per day (GPD) of treate effluent into an unnamed tributary
of Long Creek is generated from the remediation system for the petroleum contaminated
groundwater which resulted from a former underground storage tank system at the site.
This permit was rescinded in 1996 due the requested shutdown of the remediation system as part
of the reclassification of the site based on HB#1317. The site has recently been reclassified as a
Intermediate Risk site.
The completed application, in triplicate, and a check for the processing fee, in the amount of
$80.00 is attached.

NPDES Permit Renewal
Omni Mart#32, Gaston County
October 12, 2000
Page 2
Thank you for your consideration in this matter. Should you have any questions or need
additional information, please do not hesitate to contact us at [phone].
Sincerely,
PETROLEUM E IR . ENTAL CONSULTANTS, INC.
Kelly
roject Manager
cc: Mr C. Martin Pearson

FOR AGENCY USE ONLY
Date Received
Yeaz Month Day
A7,1
Division of Water Quality / Water Quality Section
Cenificate of Coverage
IG1
National Pollutant Discharge Elimination System N1�Check
I Amount!
NCDENR
NORTH CAROLINA DEPART RENT Or
ER`ARORMENT ANO NATURAL RESOURCES NCG510000 Permit Assigned to
NOTICE OF INTENT
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG510000 and Authorization to Construct groundwater remediation projects designed to treat
petroleum-contaminated groundwater.
(Please print or type) ^
61 OCT 1 7 2000
1) Mailing address of owner/operator:
Company Name Gaston Merchants Oil Company DEyit h:,ltR ,'.'::1Y
P Y Puna. SC,;*:-.
Owner Name C. Martin Pearson
Street Address 1513 N. Chester Street
City Gastonia State NC ZIP Code 28053
Telephone No. 704 867-7259 Fax: [phone]
* Address to which all permit correspondence will be mailed
2) Location of facility producing discharge:
Facility Name Omni Mart #32
Facility Contact C. Martin Pearson
Street Address 1390 N. Chester Street
City Gastonia State NC ZIP Code 28053
County Gaston L
Telephone No. None Fax: 2,,1
ti •J 3) Physical location information: 2 7 S It
Please provide a narrative description of how to get to the facility (use street names, state road numbers,
and distance and direction from a roadway intersection). South on US 321 from I-85 t
approximately 1/4 mile on left
(A copy of a county map or USGS quad sheet with facility clearly located on the map is required to be submitted with this application) i/(14-4
4) This NPDES permit application applies to which of the following : ^ h v`6 //("07
El New or Proposed 4--� c p
Does the facility have an approved CAP? ❑Yes El No Date approved:
If no, please contact the Regional Office Groundwater Section to determine the status of CAP
approval and/or authorization to proceed if immediate remediation is recommended.
Regional Office contact person: Brad Newton
Site Ranking (A- E): GW incident #
❑ Modification
Please describe the modification:
Renewal
Please specify existing permit number and original issue date: NCG510000 Cert of Coy NCG510368
10/28/96
5) Does this facility have any other NPDES permits?
Flo
Page 1 of 4

NCG510000 N.O.I.
0 Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
6) Description of Discharge:
a) Is the discharge directly to the receiving water? 43 Yes 0 No
If no, submit a site map with the pathway to the potential receiving waters clearly marked.
b) Number of discharge points (ditches, pipes, channels, etc. that convey wastewater from the property): 1
c) Volume of discharge per each discharge point (in GPD): 14,440
7) Discharge Frequency:
a) The discharge is: EXContinuous 0 Intermittent
If the discharge is intermittent, describe when the discharge will occur:
b) What is the source(s) of contamination (i.e. gasoline, diesel, solvents, etc.)?: Gasoline
General permits may be obtained for gasoline and/or heavy fuel contamination. An individual permit
will be issued for sites contaminated with other constituents such as solvents and pesticides
c) Is free product present? ❑Yes ti No
If yes, a product storage tank and an off/water separator are required. Free product is defined as any
measurable accumulation of 1/8" or more in a well or floating on surface water
8) Treatment system components:
Check all of the following that apply:
El Oil/Water Separator jl Air Stripper Li Carbon Adsorption 0 Filters
0 Other:
a) If an Oil/Water separator is present, please provide the following information:
i) Rated flow capacity of the unit (in GPM): 30 microns @ 10 GPM
ii) Volume of unit(gal): 80
iii) Free product disposal method: Gravity fed holding tank (1,000 gallon)
b) If an air stripper is present, please provide the following information:
i) Rated flow capacity of the unit (in GPM): ISO ,
ii) Air provided for stripping (in CFM): Sea, 320
iii) Air to Water ratio: 224
iv) Number of trays (if applicable): 12 diffusers
c) If carbon adsorption is present, please provide the following information:
i) Rated flow capacity of the unit(s) (in GPM): 20
ii) Number of carbon units and arrangement if number exceeds one (i.e., in parallel or in series):
2 Either parallel or in series, generally in series
iii) Pounds of carbon in each unit:
iv) Specify carbon breakthrough time and how it was estimated:
d) If filters are used, please provide the following information:
i) Rated flow capacity of each unit(s) (in GPM):
ii) Arrangement of particulate filters within the system: 0 parallel 0 series
Page 2 of 4

NCG51 0000 N.O.I.
e) Solids disposal method:
f) If other components to be included, please specify:
9) Receiving waters:
a) What is the name of the body.or bodies of water (creek, stream, river, lake, etc.) that the facility
wastewater discharges end up in? If the wastewater discharge is to a separate storm sewer system
(4S), name the operator of the 4S (e.g. City of Raleigh). Unnamed tributary of Long Creek
b) Stream Classification: in the Catawba River Basin
10) Alternatives to Direct Discharge:
Address the feasibility of implementing each of the following non-discharge alternatives
a) Connection to a Regional Sewer Collection System - If the facility is existing and currently discharges
to a POTW, when will connection be terminated?
b) Subsurface disposal (including nitrification field, infiltration gallery, injection wells, etc.)
c) Spray irrigation
The alternatives to discharge analysis should include boring logs and/or other information indicating that a
subsurface system is neither feasible nor practical as well as written confirmation indicating that
connection to a POTW is not an option. It should also include a present value of costs analysis as
outlined in the Division's "Guidance For the Evaluation of Wastewater Disposal Alternatives".
11) Additional Application Requirements:
For new or proposed discharges, the following information must be included in triplicate with this
application or it will be returned as incomplete.
a) 7.5 minute series USGS topographic map(or a photocopied portion thereof) with discharge location
clearly indicated.
b) Site map, if the discharge is not directly to a stream,the pathway to the receiving stream must be
clearly indicated. This includes tracing the pathway of a storm sewer to its discharge point.
c) If this application is being submitted by a consulting engineer (or engineering firm), include
documentation from the applicant showing that the engineer(Or firm) submitting the application has
been designated an authorized Representative of the applicant.
d) Final plans for the treatment system (if applicable). The plans must be signed and sealed by a North
Carolina registered Professional Engineer and stamped-"Final Design-Not released for construction".
e) Final specifications for all major treatment components (if applicable). The specifications must be
signed and sealed by a North Carolina registered Professional Engineer and shall include a narrative
description of the treatment system to be constructed.
f) Site map identifying the location of the monitoring wells, the recovery wells, and the treatment system
unit.
g) Analytical monitoring data which sufficiently characterizes the type and concentration of contaminants
on site. This includes a listing of any chemicals found with the maximum observed concentrations
reported. The data provided must be no older than one year prior to the date of this application. At a
minimum, the following parameters must be reported: Benzene, Toluene, Ethylbenzene, Xylene,
Lead, Naphthalene, Phenol, MTBE, 1,2-Dichlorethane, Fluorene and Phenanthrene.
Page 3 of 4

NCG51 0000 N.O.I.
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: C. Martin Pearson
Title: President
r 4)49c)
(Signature of Applicant) (Date Signed)
North Carolina General Statute 143-215.6 b(i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any
application, record, report, plan or other document filed or required to be maintained under Article 21
or regulations of the Environmental Management Commission implementing that Article, or who
falsifies, tampers with or knowingly renders inaccurate any recording or monitoring device or method
required to be operated or maintained under Article 21 or regulations of the Environmental
Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a
fine not to exceed $10,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C.
Section 1001 provides a punishment by a fine of not more than $10,000 or imprisonment not more
than 5 years, or both, for a similar offense.)
Notice of Intent must be accompanied by a check or money order for$80.00 made payable to:
NCDENR
Mail three(3)copies of the entire package to:
Stormwater and General Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Final Checklist
This application will be returned as incomplete unless all of the following items have been
included:
❑ Check for$80.00 made payable to NCDENR
❑ 3 copies of county map or USGS quad sheet with location of facility clearly marked on map
❑ 3 copies of this completed application and all supporting documents
❑ 3 sets of plans and specifications signed and sealed by a North Carolina P.E.
❑ Thorough responses to items 1-10 on this application
❑ Alternatives analysis including present value of costs for all alternatives
Note
The submission of this document does not guarantee the issuance of an NPDES permit
Page 4 of 4

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Petroleum Environmental Consultants, Inc. PEC
474 - ..-----.\- ..
- 7 S *1........--N 4- Monitor Weil
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Gastonia, NC System Map A Monitor Well/Surfac,e Air Vent
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NPDES PERMIT RENEWAL
Gaston Merchants Oil Company
Omni Mart #32
1390 N. Chester Street (US Hwy 321)
Gastonia, NC
Item 1 Mailing address of owner/operator:
Company Name Gaston Merchants Oil Company
Owner Name C. Martin Pearson
Address P. O. Box 758 (1513 N. Chester Street/28052)
City, State, Zip Code Gastonia,NC 28053
Telephone No 704 867-7259
Fax [phone]
Item 2 Location of facility producing discharge
Facility Name Omni Mart#32
Facility Contact C. Martin Pearson
Street Address 1390 N. Chester Street(US Hwy 321)
City Gastonia,NC 28052
County Gaston County
Telephone No None
Item 3 Physical location information
South on US 321 (N. Chester Street) from I-85, approximately 1/4 mile on left
1

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 2
Item 4 This application is for permit renewal.
Original Permit No. NC0083810 issued April 29, 1994
Previous Permit No. NCG510000 Certificate of Coverage NCG5810368 issued October
28, 1996. This permit was rescinded in 1996 due the requested shutdown of the
remediation system as part of the reclassification of the site based on HB#1317. The site
has recently been reclassified as a Intermediate Risk site Incident# 6887.
Regional Office contact person - Brad C. Newton
Item 5 Does the facility have any other NPDES permits NO
Item 6 Description of Discharge:
a) Is the discharge directly to the receiving water YES
b) Number of discharge points 1
c) Volume of discharge per each discharge point System capacity 14,440 GPD
Actual average flow is 4,320 GPD.
Item 7 Discharge Frequency:
a) The discharge is Continuous - Year round.
b) What is the source of contamination? Gasoline
c) Is free product present? NO - No free product since 1996
2

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 3
Item 8 Treatment System Components:
a) Oil/Water Separator YES
Hydro-Flo Technologies, Inc. Dyna-Pac-24 oil/water separator
1) Rated flow capacity is 20 microns @ 4 GPM and 30 microns @ 10 GPM
2) Volume of unit: 180 gallons
3) Free product disposal method: Gravity fed to 1,000-gallon holding tank
b) Air-stripper YES
Aeromix Systems, Inc. Breeze Series 6
1) Rated flow capacity: 150 GPM
2) Air provide for stripping: 320 CFM
3) Air to Water ratio: 224
4) Number of trays: N/A 12 diffusers
c) Carbon adsorptionYES
1) Rate flow capacity: 20 GPM
2) Number of carbon units: 1 unit
3) Pounds if carbon in each unit: 500 lbs
4) Specify carbon breakthrough time and how it is estimated: System pressure is
monitored to determine filter replacement & analytical testing.
d) Filters NO
Item 9 Receiving waters:
a) What is the name of the body of water that the facility wastewater discharges end up
in: Unnamed tributary to Long Creek in the Catawba River Basin(see
attached USGS map)
3

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 4
Item 10 Alternatives to Direct discharge:
The following alternatives were considered as possible alternative methods of disposal for treated
groundwater:
10 (a) Connection to a Regional Sewer Collection System
Based on preliminary communications, the City of Gastonia Wastewater Treatment Division
administrators were not receptive to accepting the anticipated effluent flow volume since the
treatment capacity of the local POTW is currently near its maximum. Industrial discharge fees
are relatively high at$1.51/ 1000 gallons. It is anticipated that groundwater treatment may be
required for three years. At an estimated effluent flow rate of 14,400 GPD, discharge fees over
three years will be approximately$24,000. These costs would result in an unnecessary economic
burden for GMOC.
10 (b) Subsurface Disposal
Subsurface disposal through infiltration galleries or injection wells was not consider a feasible
remedial alternative for the site. Much of the contaminated area lies beneath asphalt and
concrete pavement, a building and a pre-stressed concrete canopy. Due to low soil
permeabilities, an infiltration gallery would have to be extensive in order to reinject the total
recovered influent volume. In addition, a soil vapor extraction system has been proposed for soil
remediation. Excessive soil moisture would restrict the effectiveness of soil venting.
10 (c) Spray Irrigation
Spray irrigation is not a feasible discharge alternative. Most of the site is capped by asphalt or
concrete pavement. Shallow site soils have a relatively low permeability. In addition, a soil
vapor extraction system has been proposed for soil remediation. Excessive soil moisture would
restrict the effectiveness of soil venting.
4

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 5
Additional Information
The site groundwater remediation goals include removal of residual free product from the
subsurface, reduction of contaminant concentrations in the groundwater and containment of
further plume migration. The pump-and-treat system has been in operation since January, 1995.
Groundwater Extraction System
Two 4" groundwater recovery wells are located as such to create an areal and vertical capture
zone to reduce the entire dissolved-phase hydrocarbon plume (see Figure 1). Pneumatically
controlled top and bottom loading pumps accomplish removal of floating free product(top) and
dissolved phase (bottom) contaminants in the groundwater. The wellhead to treatment piping is
constructed to provide double-wall containment and is placed in trenches for weather protection
and security.
Extracted groundwater is pumped to a treatment system comprised of an oil/water separator,
diffused aerator and carbon adsorbers (Drawing#2). The average flow through the treatment
system is approximately 3 gallons per minute (GPM) or 4,320 gallons per day(GPD). However,
the system is designed to accommodate an average daily influent and effluent flow rate will be
10 GPM or 14,400 GPD. All of the contaminated groundwater influent is being treated.
Oil/Water Separator
An oil/water separator is being utilized to remove and temporarily store free-phase gasoline
product and/or emulsions prior to downstream aeration treatment. A Hydro-Flo Dyna-Pak
Model DP-3 coalescing-type filter manufactured by Hydro-Flo Technologies Inc. is being
employed. This unit is capable of removing oil particles as small as 20 microns at a flow rate of
4 GPM and 30 microns at flows of 10 GPM. Effluent exiting the oil/water separator flows by
gravity to the aeration tank.
5

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 6
The oil/water separator's oil reservoir is backed-up by a 55 gallon overflow storage drum. This
storage drum is equipped with a overfill level switch that will shut the complete system down if
overfill. The drum is checked during routine maintenance and monitoring to ensure that the unit
is drained of free product and/or emulsions when required to maintain system performance.
Separated product and emulsions are manually transferred from the overflow drum to the
existing free product storage tank which will be periodically pumped out by a waste oil recycler
for treatment/disposal.
Aeration Treatment
An Aeromix Breeze Series 6 diffused aeration vessel designed with a relatively high air-to-water
ratio is utilized to remove volatile hydrocarbons and strippable gasoline additives from the
aqueous wastestream. The specially designed aeration tank is coupled with a flexible blower
allowing for design modifications should they be required. The Breeze Series 6 is designed to
handle flows up to 150 GPM. However, considering the air-to-water ratios required to achieve
optimal constituent removal, the system operates more efficiently at substantially lower influent
flow rates. During operation, contaminated groundwater flows into the side of the aeration tank.
The aqueous wastestream is routed through six cells which are separated by baffles. A counter
current air flow is provided to each cell through two non-fouling stainless steel air diffusers.
Each cell receives a maximum air flow of 50 CFM. A total of twelve (12) air diffusers are
connected to the internal manifold by 2' galvanized pipe to a remote blower. The Series 6
aeration tank is equipped with a 6 HP, 3450 RPM regenerative blower providing a maximum air
flow rate of 320 CFM.
Activated Carbon Adsorption
The treated water collects in the last compartment of the aeration tank. Level switches control a
transfer pump that delivers the treated water to the secondary liquid phase treatment, which
consists of carbon adsorption units. The two carbon adsorption units have a 99.95 treatment
efficiency to remove the organic contaminants remaining after aeration.
6

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 7
NPDES Discharge to adjacent stream
After the recovered groundwater passes through the treatment system, it is discharged through 2'
PVC piping to an unnamed tributary to Long Creek in the Catawba River Basin.
Monitoring of the treatment system effluent for benzene, toluene, ethylbenzene and xylenes
(BTEX) and MTBE is conducted on a monthly basis. None of the BTEX compounds have been
detected in any of the effluent samples, except the September, 1995 sampling event, which
detected a concentration of benzene at 2.8 parts per billion (ppb). Concentrations of MTBE have
ranged from non-detect to 410 ppb during 1995. Quarterly chronic toxicity tests of the effluent
have all passed.
Water samples are also collected from the receiving creek at a point 60 feet up stream of the
NPDES discharge and at a point approximately 500 feet down stream of the discharge point for
BTEX compounds. All analytical tests during 1995 at these sample locations were below the
laboratory method detection limits, however the upstream sample in January, 1996 indicated a
concentration of benzene at a level of 1.0 ppb; and the downgradient sample produced a
concentration of toluene at a level of 1.5 ppb.
7

NPDES PERMIT RENEWAL, Gaston Merchants Oil Company
Omni Mart#32
Page 8
Chemicals found in detectable amounts with the maximum observed concentration reported.
TABLE 2
SUMMARY OF MAXIMUM GROUNDWATER CONSTITUENT CONCENTRATIONS
Constituent Concentration EPA Test Monitoring Date
(ug/l) Method Well ID Sampled
Gasoline Free Product - - - NONE 9/28/00
Benzene 5,100 602 RW-2 9/28/00
Toluene 2,540 602 MW-2 9/28/00
Ethylbenzene 530 602 MW-2 9/28/00
Xylenes 3,320 602 (Ext.) MW-2 9/28/00
MTBE 41,400 602 (Ext.) MW-5 9/28/00
IPE 155 602 (Ext.) MW-8 9/28/00
EDB ND 504.1 N/A 9/28/00
The removal efficiency of each compound for the project:
Based on laboratory analytical data from the monthly effluent sampling, the removal efficiency
of each compound is as follows:
Constituent Per Cent Removal
Benzene 100%
Toluene 100%
Ethylbenzene 100%
Xylenes 100%
MTBE 99.6 to 99.9%
8

1
I
State of North Carolina
Department of EnvironmentAkWA ,
i l and N.tNrnl RaBniirrsac
(,) ' Division of Water Quality Airiti- mi
ry//
James B. Hunt, Jr., Governor AdommimmiskIIIIMIIIIK
Wayne McDevitt, Secretary E E N Fl
A. Preston Howard, Jr., P.E., Director
NC. DEPT. of
April 13, 1998 LLVtRONNU.N Li ,!,m.
b NATURAL Ft :-<>1;it( ES
APR 1 7 1998
C. MARTIN PEARSON
GASTON MERCHANTS OIL/OMNI MART 1M OF ENVIR ITtl 1,144„ ;;3r
P.O. BOX 758 a stE kniViAl. agiaa
GASTONIA NC 28053
Subject: Rescission of NPDES Permit
Permit No. NCG510368
GASTON MERCHANTS OIL/OMNI MART
Gaston County
Dear Mr. PEARSON:
Reference is made to your request for rescission of the subject NPDES Permit. Staff
of the Groundwater Section -Permits &Compliance Unit have confirmed that this Permit
is no longer required. Therefore, in accordance with your request, NPDES Permit No.
NCG510368 is rescinded, effective immediately.
If in the future you wish to again discharge wastewater to the State's surface waters,
you must first apply for and receive a new NPDES Permit. Operating a wastewater
facility without a valid NPDES Permit will subject the responsible party to a civil penalty
of up to $10,000 per day.
If it would be helpful to discuss this matter further, I would suggest that you contact
the Water Quality staff,Mooresville Regional Office at [phone].
Sinceerelyy,,
ee(4..i
--0rL A. Preston Howard, Jr., P.E.
cc: Gaston County Health Department
Goundwater Section-Permits &Compliance Section- w/attachments
Point Source Branch- Dave Goodrich
Operator Training and Certification
Point Source Compliance - Robert Farmer- w/attachments
Mr. Roosevelt Childress, EPA
Central Files-w/attachments
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

NPDES FACILITY AND PERMIl DATA 04/13/98 12 :25:43
ATE - OPTION TRXID 5NU KEY NCG510368
PERSONAL DATA FACILITY APPLYING FOR PERMIT REGION
FACILITY NAMF> GASTON MERCHANTS
S nTL/OMNT MART COUNTY> GASTON 03
ADDRESS : MAILING (REQUIRED) LOCATION (REQUIRED)
STREET : P . O . BOX 758 STREET : 1390 NORTH CHESTER ST . (US 321 )
CITY : GASTONIA ST NC ZIP 28053 CITY : GASTONIA ST NC ZIP 28053
TELEPHONE 704 867 7259 DATE FEE PAID: 04/01 /96 AMOUNT : 200 . 00
STATE CONTACT> CLARK PERSON IN CHARGE C . MARTIN PEARSON
1=PROPOSED,2=EXIST,3=CLOSED 2 1 =MAJOR, 2=MINOR 2 1 =MUN,2=NON-MUN 2
LAT : 3516390 LONG : 08111150 N=NEW, M=MODIFICATION,R=REISSUE> R
DATE APP RCVD 04/01 /96 WRSTELOAD REQS / /
DATE STAFF REP REQS 04/08/96 WASTELOAD RCVD / /
DATE STAFF REP RCVD / / SCH TO ISSUE / /
DATE TO P NOTICE / / DATE DRAFT PREPARED / /
DATE OT AG COM REQS / / DATE DENIED / /
DATE OT AG COM RCVD / / DATE RETURNED / /
DATE TO EPA / / DATE ISSUED 10/28/96 ASSIGN/CHRNGE PERMIT
DATE FROM EPA / / EXPIRATION DATE 09/30/01
FEE CODE C 0 ) 1 =( > 10MGD) ,2=C > 1MGD) , 3=( >O. 1MGD) ,4=(<0. 1MGD) ,5=SF,6=(GP25,64,79) ,
7=(GP49,73)8=(GP76)9=(GP13, 34, 30,52)0=(NOFEE) DIS/C 66 CONBILL C )
COMMENTS: WAS NC0083810 //NO APPLICATION IN FILE
MESSAGE : *** ENTER DATA FOR UPDATE ***
•
60b Ck- - 5e ..f crn'
•
O.$cL re,5cASS Cr" 3

State of North Carolina A
Department of Environment,
Health and Natural Resources
Division of Environmental Management A / �� r
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary p FE H N F.
A. Preston Howard, Jr., P.E., Director
N.C. DEPT. OF
April 8, 1996 ENVIRONMENT, HEALTH,
& NATURAL RESOURCES
Mr. C. Martin Pearson APR 1 1 1996
Gaston Merchants Oil Company
Post Office Box 758
Gastonia, North Carolina 28052 DIVISION OF ENVIPONMENTAL MANAGEMENT
MONRESVILLE REGIONAL OFFICE
Subject: NPDES Permit Application
Permit No. NC0083810
Omni-Mart#32
• Gaston County
Dear Mr. Pearson:
This is to acknowledge the receipt of the following on April 1, 1996:
- Application Form.
- Application Processing Fee Of$400.00
This application has been assigned to Paul Clark [phone] extension 580 of our
Permits Unit for review. You will be advised of any comments, recommendations,
questions or other information necessary for the review of the application.
A copy of the application package has been sent to the Mooresville Regional Office where
staff personnel will prepare a staff report and recommendations regarding this discharge. If
you have any questions regarding this application, please contact Paul Clark.
Sincerely,
Thvid A. fnodrich Suoervisnr.
NPDES Group
cc: ,'0 t '.ville Regional Office, Water Quality Section
Permit File NC0083810
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

rvgrtn Laro I i na urp L. 01 environment., nra i Ln, anu rya Luu c i Rcauui «a
. , Division of Environmental Management, P.O. Box 29535, Raleigh, NC 27626-0535
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM APPLICATION NUMBER
APPLICATION FOR PERMIT DISCHARGE SHORT FORM C-GW I I .M _1 _ I I I i
Date Received
To be filed by persons engaged in groundwater >t
� I I ; I
remediation projects. "„ "°"`"
Oft
(OEM USE ONLY)
Do not attempt to complete this form before reading accompanying instructions.
(Please print or type)
_ iSua
1. Name, address, location, and telephone number of facility producing discharge
A. Name Gaston Merchants Oil Company
B. Mailing address P.O. Box 758 ( 1513 N. Chester Street 28052)
1. Street address
2. City Gastonia 3. State NC
4. ZIP 28051
C.location: OMNI MART #32
1. Street 1390 N. Chester Street (US Hwy 321 ) N.C. PtPT. OF
2. City Gastonia 3.State NC ENVIR'Th'' ;r. II t.TH.
4. County
Gaston & NA'fl. •.,'.:. :,.: „URGES
D. Telephone No. [phone] •
APR i 1 1996
E. Nature of business Former Gasoline Station/Convenience Store
DIVISION 6F EIIVI;.ONMEiNTAL MANAGEMENT
2. facility contact MOORESV ELE REGIONAL OFFICE
A. Name C. Martin Pearson
•
B. Title President, GMOC C. Telephone No. (704) _867-7259
3. The application is for 0 a new permit, ®permit renewal, ❑permit modification.
SIC MEM (if known). if application is for renewal or modification, please indicate permit
number: NCO() 83810
4. Product(s) recovered Unleaded gasoline
[Diesel fuel, leaded or unleaded fuel, solvents, etc.)
This application must also include the following:
A) A report of alternatives to surface water discharge as outlined by N.C. Permit and Engineering Unit's
'Guidance for Evaluation of Wastewater Disposal Alternatives.' [ReQu1fed by 154\NCAC 2H .0105 (C)].
B) An engineering proposal detailing the remediation project. [Required by 1SA NCAC 2H .0105 (c)).
C) A listing of any chemicals found to detectable amounts with the maximum observed concentration
reported. The summary of analytical results containing this maximum value should also be
submitted (i.e. the listing, not the graphical scan). The most recent sample must be no older than
. one year previous to the date of this application.
For fuel remediation projects,volatile organic compounds should be scanned along with any
suspected fuel additives. The following compounds should be included: benzene*, toluene*,
ethylbenzene*, xylene*, lead , methyl tert-butylether (MTBE), dibromoethane (EDB), •
1,2-dichloroethane, isopropyl ether, naphthalene, phenol.
*An EPA approved method capable of detection levels to 1 ppb should be used to detect these
compounds •

,
For solvents or unidentified products, an EPA Method 624/625 analysis should be provided,
with the 10 largest peaks,not identified as one of the targeted compounds and not present in
the procedural blank, identified and approximately quantitated. (As per the same guidance
stipulated on NCDEM's "Annual Pollutant Analysis Monitoring (APAM) Requirement - Reporting
Form A,' Revised June 19901.
If metals or pesticides are suspected to be present,these should be analyzed to the same detection
level as presented in the NC APAM.
D) The removal efficiency of each compound detected for the proposed project should be provided,
1f known.
5. Name of receiving water Unnamed tributary to Long Creek in the Catawba River Basin
Attach a USGS topographical map with all discharge points clearly marked.
6. is potential discharge directly to the receiving water? If not, state cniu_rtfically the discharge point.
YES
Mark clearly the pathway to the potential receiving water on the site map. [This includes tracing
the pathway of the storm sewer to its discharge point, if a storm sewer is the only viable means of
discharge.]
7. Amount of treated groundwater to be discharged in gallons per operating day:
14 . 440 GPD
8. Describe the duration and frequency of the discharge (continuous, intermittent, seasonal)
including the months of discharge, number of days per week of discharge,volume treated
(monthly average flow in gallons per day).
Continuous - year round average flow 4 , 320 GPD
i certify that I am familiar with the information contained in the application and that to the best
of my knowledge and belief such information is true, complete, and accurate.
C. Martin Pearson President
PRINTED Name of Per n Signing Title
SIGNATURE of Applicant Date Application S/,--?(?6
d
•
•
North Carolina General Statute 143-215.6 (b) (2) provides that:
Any person who knowingly makes any false statement representation, or certification in any application,
record,report, plan or other document files or required to be maintained under Article 21 or regulations
of the Environmental Management Commission implementing that Article, or who falsifies, tampers with
or knowingly renders inaccurate any recording or monitoring device or method required to be operated
or maintained under Article 21 or regulations of the Environmental Management Commission implementing
that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $10,000, or by imprison-
ment not to exceed six months, or by both. (16 U.S.C. Section 1001 provides a punishment by a fine of not
more than $10,000 or imprisonment not more than 5 years, or both, for a similar offense.)

NPDES PERMIT RENEWAL
Gaston Merchants Oil Company
Omni Mart #32
1390 N. Chester Street (US Hwy 321)
Gastonia, NC
Item 1 Name, address, and telephone number of facility producing discharge
A. Name: Gaston Merchants Oil Company
B. Mailing Address: P.O. Box 758 (1513 N. Chester Street/28052)
Gastonia, NC 28053
C. Location: Omni Mart #32
1390 N. Chester Street (US Hwy 321)
Gastonia, NC 28052
Gaston County
D. Telephone N 7: [phone]
E. Nature of Business: Former Convenience/Gasoline Store
Item 2 Facility Contact:
A. Name: C. Martin Pearson
B. Title: President
C. Telephone N°: [phone]
Item 3 This application is for permit renewal.
Item 4 Product recovered: Unleaded Gasoline
item 4a -Alternatives to surface water discharge:
The following alternatives were considered as possible alternative methods of disposal for
treated groundwater:
1

4a.(1) Connection to a Regional Sewer Collection System
Based on preliminary communications, the City of Gastonia Wastewater Treatment Division
administrators were not receptive to accepting the anticipated effluent flow volume since the
treatment capacity of the local POTW is currently near its maximum. Industrial discharge
fees are relatively high at $1.51/ 1000 gallons. It is anticipated that groundwater treatment
may be required for three years. At an estimated effluent flow rate of 14,400 GPD, discharge
fees over three years will be approximately $24,000. These costs would result in an
unnecessary economic burden for GMOC.
4a.(2) Subsurface Disposal
Subsurface disposal through infiltration galleries or injection wells was not consider a feasible
remedial alternative for the site. Much of the contaminated area lies beneath asphalt and
concrete pavement, a building and a pre-stressed concrete canopy. Due to low soil
permeabilities, an infiltration gallery would have to be extensive in order to reinject the total
recovered influent volume. In addition, a soil vapor extraction system has been proposed for
soil remediation. Excessive soil moisture would restrict the effectiveness of soil venting.
4a.(3) Spray Irrigation
Spray irrigation is not a feasible discharge alternative. Most of the site is capped by asphalt
or concrete pavement. Shallow site soils have a relatively low permeability. In addition, a
soil vapor extraction system has been proposed for soil remediation. Excessive soil moisture
would restrict the effectiveness of soil venting.
item 4b An Engineering proposal detailing the remediation project:
The site groundwater remediation goals include removal of residual free product from the
subsurface, reduction of contaminant concentrations in the groundwater and containment of
further plume migration. The pump-and-treat system has been in operation since January,
1995.
Groundwater Extraction System
Two 4" groundwater recovery wells are located as such to create an areal and vertical capture
2

zone to reduce the entire dissolved-phase hydrocarbon plume (see Figure 1). Pneumatically
controlled top and bottom loading pumps accomplish removal of floating free product (top)
and dissolved phase (bottom) contaminants in the groundwater. The wellhead to treatment
piping is constructed to provide double-wall containment and is placed in trenches for weather
protection and security.
Extracted groundwater is pumped to a treatment system comprised of an oil/water separator,
diffused aerator and carbon adsorbers (Drawing #2). The average flow through the treatment
system is approximately 3 gallons per minute (GPM) or 4,320 gallons per day (GPD).
However, the system is designed to accommodate an average daily influent and effluent flow
rate will be 10 GPM or 14,400 GPD. All of the contaminated groundwater influent is being
treated.
OWWater Separator
An oil/water separator is being utilized to remove and temporarily store free-phase gasoline
product and/or emulsions prior to downstream aeration treatment. A Hydro-Flo Dyna-Pak
Model DP-3 coalescing-type filter manufactured by Hydro-Flo Technologies Inc. is being
employed. This unit is capable of removing oil particles as small as 20 microns at a flow
rate of 4 GPM and 30 microns at flows of 10 GPM. Effluent exiting the oil/water separator
flows by gravity to the aeration tank
The oil/water separator's oil reservoir is backed-up by a 55 gallon overflow storage drum.
This storage drum is equipped with a overfill level switch that will shut the complete system
down if overfill. The drum is checked during routine maintenance and monitoring to ensure
that the unit is drained of free product and/or emulsions when required to maintain system
performance. Separated product and emulsions are manually transferred from the overflow
drum to the existing free product storage tank which will be periodically pumped out by a
waste oil recycler for treatment/disposal.
Aeration Treatment
An Aeromix Breeze Series 6 diffused aeration vessel designed with a relatively high air-to-
water ratio is utilized to remove volatile hydrocarbons and strippable gasoline additives from
the aqueous wastestream. The specially designed aeration tank is coupled with a flexible
blower allowing for design modifications should they be required. The Breeze Series 6 is
designed to handle flows up to 150 GPM. However, considering the air-to-water ratios
3

,
required to achieve optimal constituent removal, the system operates more efficiently at
substantially lower influent flow rates. During operation, contaminated groundwater flows
into the side of the aeration tank The aqueous wastestream is routed through six cells which
are separated by baffles. A counter current air flow is provided to each cell through two non-
fouling stainless steel air diffusers. Each cell receives a maximum air flow of 50 CFM. A
total of twelve (12) air diffusers are connected to the internal manifold by 2' galvanized pipe
to a remote blower. The Series 6 aeration tank is equipped with a 6 HP, 3450 RPM
regenerative blower providing a maximum air flow rate of 320 CFM.
Activated Carbon Adsorption
The treated water collects in the last compartment of the aeration tank. Level switches
control a transfer pump that delivers the treated water to the secondary liquid phase treatment,
which consists of carbon adsorption units. The two carbon adsorption units have a 99.95
treatment efficiency to remove the organic contaminants remaining after aeration.
NPDES Discharge to adjacent stream
After the recovered groundwater passes through the treatment system, it is discharged through
2' PVC piping to an unnamed tributary to Long Creek in the Catawba River Basin.
Monitoring of the treatment system effluent for benzene, toluene, ethylbenzene and xylenes
(BTEX) and MTBE is conducted on a monthly basis. None of the BTEX compounds have
been detected in any of the effluent samples, except the September, 1995 sampling event,
which detected a concentration of benzene at 2.8 parts per billion (ppb). Concentrations of
MTBE have ranged from non-detect to 410 ppb during 1995. Quarterly chronic toxicity tests
of the effluent have all passed.
Water samples are also collected from the receiving creek at a point 60 feet up stream of the
NPDES discharge and at a point approximately 500 feet down stream of the discharge point
for BTEX compounds. All analytical tests during 1995 at these sample locations were below
the laboratory method detection limits, however the upstream sample in January, 1996
indicated a concentration of benzene at a level of 1.0 ppb; and the downgradient sample
produced a concentration of toluene at a level of 1.5 ppb. Effluent laboratory analytical data
are summarized in Table 1.
4

item 4c A listing of any chemicals found in detectable amounts with the maximum observed
concentration reported
TABLE 2
SUMMARY OF MAXIMUM GROUNDWATER CONSTITUENT
CONCENTRATIONS
Constituent Concentration EPA Test Monitoring Date
(ug/1) Method Well ID Sampled
Gasoline Free Product - - - MW-1 & MW-3 3/2/94
Benzene 10,500 602 MW-8 10/23/95
7,600 602 MW-2 11/7/91
Toluene 6,970 602 MW-8 10/23/95
Ethylbenzene 1,000 602 MW-8 10/23/95
4,600 602 (Ext.) MW-2 11/7/91
Xylenes 3,800 602 (Ext.) MW-8 10/23/95
MTBE 210,000 602 (Ext.) MW-8 4/25/95
IPE 1,700 602 (Ext.) MW-8 4/25/95
EDB 0.41 504.1 MW-2 7/25/95
item 4c The removal efficiency of each compound for the project:
Based on laboratory analytical data from the monthly effluent sampling, the removal
efficiency of each compound is as follows:
Constituent Per Cent Removal
Benzene 100%
Toluene 100%
Ethylbenzene 100%
Xylenes 100%
MTBE 99.6 to 99.9%
5

Item 5 Name of receiving water:
Unnamed tributary to Long Creek in the Catawba River Basin (see attached USGS
map)
Item 6 Is potential discharge directly to the receiving water: Yes
Item 7 Amount of treated groundwater to be discharged in gallons per operating day:
14,440 GPD
Item 8 Describe the duration and frequency of the discharge:
Year round - continuous. Actual average flow is 4,320 GPD.
6

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Table 1
NPDES Permit N° NC0083810
Effluent Monitoring
Omni Mart #32
1390 N. Chester Street
Gastonia, NC
PEC 474
Effluent Up Down
( E ) Stream Stream
60' ( D )
( U )
Month Volume Benzene Toluene MTBE Chronic BTEX BTEX
1995 (gallons) Toxicity
January 41,242 ND ND 73 PASS ND ND
February 49,028 ND ND 280 --- ND ND
March 85,904 ND ND 200 --- ND ND
April 75,676 ND ND 230 PASS ND ND
May 46,042 ND ND ND --- ND ND
June 61,734 ND ND 120 --- ND ND
July 62,273 ND ND 200 PASS ND ND
August 93,898 ND ND 93 --- ND ND
September 58,348 2.8 ND 410 --- ND ND
October 73,844 ND ND 167 PASS ND ND
November 42,612 ND ND ND --- ND ND
December 53,681 ND ND 104 --- ND ND
January, 133,594 ND ND 121 PASS 1.0 1.5
1996 Benzene Toluene
All analytical units given in ugh - parts per billion (ppb).
ND - Non Detect at or above the laboratory method detection limit of 1.0 ppb.

I GASTON MERCHANTS OIL COMPANY
OMNI MART#32
1390 N. Chester Street, Gastonia,NC
I
QUARTERLY GROUNDWATER QUALITY ANALYTICAL SUMMARY
January, April, July, October, 1995 & January 1996
Sample Date Benzene Toluene Ethyl- Xylenes MTBE EDB IPE
ID benzene
1/12/95 2,300 4,500 280 2,800 16,000 < 0.05 < 100
MW-2 4/25/95 1,300 - -3,400 190 1,500 9,800 0.34 130
7/25/95 1,400 6,200 410 2,400 6,500 0.41 61
10/23/95 937 6,940 520 2,810 3,990 < 0.05 175
1/16/96 584 2,682 296 1,322 2,112 < 0.05 <1,000
1/12/95 330 < 10 < 10 < 10 4,400 < 0.05 190
MW-5 - - - - -
4/25/95 820 3.3 15 8.1 15,000 0.10 270
7/25/95 210 < 5 < 5 < 5 34,000 0.14 180
10/23/95 1,030 < 5 < 5 < 5 40,000 <0.05 512
l 1 - -
1/16/96 247 5.3 2.4 5.2 12,860 < 0.05 226
1/12/95 9.7 < 1 < 1 < 1 < 1 < 0.05 < 1
MW-6 - - - - - - - - -
4/25/95 16 2.2 <1 <1 < 1 < 0.05 < 1
7/25/95 19 < 1 < 1 < 1 7.8 0.17 < 1
10/23/95 26.3 < 1 < 1 2.06 < 5 < 0.05 < 5
1/16/96 38.6 < 1 < 1 3.6 8.6 < 0.05 < 5
1/12/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
MW-7 - - _ y - +
4/25/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
7/25/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
- - - .A- -
10/23/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
1/16/96 < 1 < 1 < 1 < 1 < 1 < 0.05 < 5
1/12/95 7,900 3,000 430 2,100 71,000 < 0.05 1,300
MW-8 --------- - - y - -
4/25/95 10,000 6,300 1,000 3,200 210,000 0.16 1,700
7/25/95 9,400 6,400 290 2,700 110,000 0.14 910
10/23/95 10,500 6,970 879 3,880 87,600 < 0.05 971
1/16/96 3,890 800 478 694 36,860 < 0.05 485
1/12/95 < 1 < 1 < 1 < 1 3.4 < 0.05 < 1
MW-9 - -
j 4/25/95 < 1 < 1 < 1 < 1 17 <0.05 3.0
7/25/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
10/23/95 < 1 < 1 < 1 < 1 < 1 < 0.05 < 1
1/16/96 < 1 < 1 < 1 < 1 11 < 0.05 < 5

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State of North Carolina
Department of Environment,
Health and Natural Resources A •• 7FA
Mooresville Regional OfficePi
James B. Hunt, Jr., Governor � C
Jonathan B. Howes, Secretary
Vivian H. Burke, Regional Manager
DIVISION OF ENVIRONMENTAL MANAGEMENT
May 4 , 1994
Mr. C. Martin Pearson
Gaston Merchants Oil Company
Post Office Box 758
Gastonia, North Carolina 28052
Subject: NPDES Permit No. NC0083810
Omni Mart No. 32
Gaston County, NC
Dear Mr. Pearson:
Our records indicate that NPDES Permit No. NC0083810 was
issued on April 29, 1994 for the discharge of wastewater to the
surface waters of the State from your facility. The purpose of
this letter is to advise you of the importance of the Permit and
the liabilities in the event of failure to comply with the terms
and conditions of the Permit. If you have not already done so, it
is suggested that you thoroughly read the Permit. Of particular
importance is Page 4 .
Page 4 sets forth the effluent limitations and monitoring
requirements for your discharge(s) . Your discharge(s) must not
exceed any of the limitations set forth. The section headed
"Monitoring Requirements" describes the measurement frequencies,
sample types and sampling locations. Upon commencement of your
discharge (or operation) , you must initiate the required
monitoring. The monitoring results must be entered on the
reporting forms furnished to you by this Agency. If you have not
received these forms, they should be arriving shortly. If you fail
to receive the forms, please contact this Office as quickly as
possible. I have enclosed a sample of the "Effluent" reporting
form (DEM Form MR-1) , plus instructions for completing the form.
It is imperative that all applicable parts be completed, and the
original and one copy be submitted as required.
The remaining Parts of the Permit set forth definitions,
general conditions and special conditions applicable to the
operation of wastewater treatment facilities and/or discharge(s) .
The conditions include special reporting requirements in the event
of noncompliance, bypasses, treatment unit/process failures, etc.
Also addressed are requirements for a certified wastewater
treatment plant operator if you are operating wastewater treatment
919 North Main Street,Mooresville, North Carolina 28115 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/ 10%post-consumer paper

//lir
Mr. C. Martin Pearson
Page Two
May 4, 1994
facilities. Any changes in operation of wastewater treatment
facilities, quantity and type of wastewater being treated or
discharged, expansions and/or upgrading of wastewater treatment
facilities must be permitted or approved by this Agency.
Failure to comply with the terms and conditions of an NPDES
Permit subjects the Permittee to enforcement action pursuant to
Section 143-215.6 of the North Carolina General Statutes. A civil
penalty of up to $10,000 per violation plus criminal penalties may
be assessed for such violations. If you find at any time that you
are unable to comply with the terms and conditions of the Permit,
you should contact this Office immediately. A Consent Order may be
necessary while pursuing action to obtain compliance.
As a final note, an NPDES Permit is normally issued for a
five-year period. Permits are not automatically renewed. Renewal
requests must be submitted to this Agency no later than 180 days
prior to expiration. Please make note of the expiration date of
your Permit. This date is set forth on Page 1 of the Permit. Also
note that NPDES Permits are not, transferable. If you, as the
Permittee, cease to need this Permit, then you should request that
the Permit be rescinded.
As mentioned previously, the purpose of this letter is to
advise you of the importance of your NPDES Permit. Please read the
Permit and contact this Office at 704/663-1699 in Mooresville if
you have any questions or need clarification. We look forward to
providing any assistance.
Sincerely,
CI:) .
q--)4 /%/e_
D. Rex Gleason, P. E.
Water Quality Regional Supervisor
Enclosure
DRG:sl

. State of North Carolina
Department of Environment, ATT
J :frA
Health and Natural Resources \i, Nr
S Division of Environmental Management
/ /,,,( James B. Hunt, Jr., Governor DE .N
Jonathan B. Howes, Secretary > VVIRONMENT, HEALTH,
A. Preston Howard, Jr., P.E., Director a*NATURAL RESOURCES
April 29, 1994 DIVISION OF
MAY ENVIRONMENTA4L199d MANAGEMENT
C. Martin Pearson MOORESVILLE REGIONAL OFFICE
P 0 Box 758
Gastonia, NC 28052
Subject: Permit No. NC0083810
Omni Mart#32
Gaston County
Dear Mr. Pearson:
In accordance with your application for discharge permit received on January 6, 1993, we
are forwarding herewith the subject state - NPDES permit. This permit is issued pursuant to
the requirements of North Carolina General Statute 143-215 .1 and the Memorandum of
Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit
are unacceptable to you, you have the right to an adjudicatory hearing upon written request
within thirty (30) days following receipt of this letter. 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, Post Office Drawer 27447, Raleigh, North
Carolina 27611 -7447. Unless such demand is made, this decision shall be final and binding.
Please take notice this permit is not transferable. Part II, E.4. addresses the requirements
to be followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Environmental Management or permits required by the Division of
Land Resources, Coastal Area Management Act or any other Federal or Local governmental
permit that may be required.
If you have any questions concerning this permit, please contact Mr. Charles Alvarez at
telephone number 919/733-5083.
Sinc
Z7ilvbti:ccilriBchy
A. Preston Howard, Jr.
cc: Mr. Jim Patrick,EPA
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

Permit No. NC0083810
•
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH,AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT �r._��D of
TO DISCHARGE WASTEWATER UNDER THE ,JT r 2� S
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
iftr 4 19�,t
%D�Pf��1f PfG�GNT z� r•'k'rt�a.,
f-iENT
r1
In compliance with the provision of North Carolina General Statute 143-215.1,
other lawful standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission,and the Federal Water Pollution Control Act, as amended,
Gaston Merchants Oil Company
is hereby authorized to discharge wastewater from a facility located at
Omni Mart#32
US Hwy 321
south of Gastonia
Gaston County
to receiving waters designated as an unnamed tributary to Long Creek in the Catawba River Basin
in accordance with effluent limitations,monitoring requirements, and other conditions set forth in
Parts I, II, and III hereof.
This permit shall become effective June 1, 1994
This permit and the authorization to discharge shall expire at midnight on September 30, 1996
Signed this day April 29, 1994
Original Signed By
David A Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

Permit No. NC0083810
SUPPLEMENT TO PERMIT COVER SHEET
Gaston Merchants Oil Company
is hereby authorized to:
1. Enter into a contract for construction of a wastewater treatment facility, and
2. Make an outlet into an unnamed tributary to Long Creek,and
3. After receiving an Authorization to Construct from the Division of Environmental
Management,construct and operate a 0.0144 MGD wastewater treatment facility located
at Omni Mart#32,US Hwy 321, south of Gastonia, Gaston County (See Part III of this
Permit), and
4. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Long Creek which is classified class C waters in the Catawba River
Basin.

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A. ().EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0083810 .
During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is authorized to discharge from
outfall(s)serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (specify) Measurement Sample *Sample
Mon. Avg, Daily Max Mon. Avg, Daily Max. Frequency Type Location
Flow** Continuous Recording E
Toluene 38.0 µg/I 2/Month Grab E,U,D
Benzene 1159.0 µg/I 2/Month Grab E,U,D
Chronic Toxicity*** Quarterly Grab E .
MTBE Monthly Grab E
* Sample location:E -Effluent,U- Upstream 60 feet above discharge,D -Downstream at Caldwell Street
**All volumes of wastewater leaving the facility shall be monitored. If continuous flow monitoring is not feasible,then the discharger shall
record the approximate time that discharge began and ended,along with the instantaneous flow at the time of the effluent sampling.
*** Chronic Toxicity (Ceriodaphnia)P/F at 31%;January,April, July and October, See Part III,Condition E.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab
sample.
Design and Construction of the waste treatment facility will emphasize the use of plastic pipes and fittings where practical.
After collecting six months of upstream and downstream data for benzene and toluene,the facility can request that the data be reviewed and if
appropriate monitoring elminated.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

PART I
Section B. Schedule of Compliance
1. The permittee shall comply with Final Effluent Limitations specified for discharges in
accordance with the following schedule:
Permittee shall comply with Final Effluent Limitations by the effective date of the permit unless
specified below.
2. Permittee shall at all times provide the operation and maintenance necessary to operate the
existing facilities at optimum efficiency.
3. No later than 14 calendar days following a date identified in the above schedule of compliance
the permittee shall submit either a report of progress or, in the case of specific actions being
required by identified dates. a written notice of compliance or noncompliance. In the latter
case, the notice shall include the cause of noncompliance, any remedial actions taken, and the
probability of meeting the next schedule requirements.

Part II
Page 1of14
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
SECTION A. DEFINITIONS
1. Permit Issuing .Authority
The Director of the Division of Environmental Management.
2. DEM or Division
Means the Division of Environmental Management, Department of Environment, Health and
Natural Resources.
3. EMC
Used herein means the North Carolina Environmental Management Commission.
4. Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act, as amended. 33
USC 1251, et. seq.
5. Mass!Dav Measurements
a. The "monthly average discharge" is defined as the total mass of all daily discharges
sampled and'or measured during a calendar month on which daily discharges are sampled
and measured, divided by the number of daily discharges sampled and/or measured during
such month. It is therefore, an arithmetic mean found by adding the weights of the
pollutant found each day of the month and then dividing this sum by the number of days
the tests were reported. The limitation is identified as "Monthly Average" in Part I of the
permit.
b. The "weekly average discharge" is defined as the total mass of all daily discharges sampled
and/or measured during the calendar week (Sunday - Saturday) on which daily discharges
are sampled and measured, divided by the number of daily discharges sampled and/or
measured during such week. It is, therefore, an arithmetic mean found by adding the
weights of pollutants found each day of the week and then dividing this sum by the
number of days the tests were reported. This limitation is identified as "Weekly Average"
in Part I of the permit.
c. The "maximum daily discharge" is the total mass (weight) of a pollutant discharged during
a calendar day. If only one sample is taken during any calendar day the weight of pollutant
calculated from it is the "maximum daily discharge." This limitation is identified as "Daily
Maximum," in Part I of the permit.
d. The "average annual discharge" is defined as the total mass of all daily discharges sampled
and/or measured during the calendar year on which daily discharges are sampled and
measured, divided by the number of daily discharges sampled and/or measured during such
year. It is. therefore, an arithmetic mean found by adding the weights of pollutants found
each day of the year and then dividing this sum by the number of days the tests were
reported. This limitation is defined as "Annual Average" in Part I of the permit.

Part II
Page 2 of 14
• 6. Concentration Measurement
a. The "average monthly concentration," other than for fecal coliform bacteria, is the sum of
the concentrations of all daily discharges sampled and/or measured during a calendar month
on which daily discharges are sampled and measured, divided by the number of daily
discharges sampled and/or measured during such month (arithmetic mean of the daily
concentration values). The daily concentration value is equal to the concentration of a
composite sample or in the case of grab samples is the arithmetic mean (weighted by flow
value) of all the samples collected during that calendar day. The average monthly count for
fecal coliform bacteria is the geometric mean of the counts for samples collected during a
calendar month. This limitation is identified as "Monthly Average" under "Other Limits" in
Part I of the permit.
b. The "average weekly concentration," other than for fecal coliform bacteria, is the sum of the
concentrations of all daily discharges sampled and/or measured during a calendar week
(Sunday/Saturday) on which daily discharges are sampled and measured divided by the
number of daily discharges sampled and/or measured during such week (arithmetic mean of
the daily concentration values). The daily concentration value is equal to the concentration
of a composite sample or in the case of grab samples is the arithmetic mean (weighted by
flow value) of all the samples collected during that calendar day. The average weekly count
for fecal coliform bacteria is the geometric mean of the counts for samples collected during
a calendar week. This limitation is identified as "Weekly Average" under "Other Limits" in
Part I of the permit.
c. The "maximum daily concentration" is the concentration of a pollutant discharge during a
calendar day. If only one sample is taken during any calendar day the concentration of
pollutant calculated from it is the "Maximum Daily Concentration". It is identified as
"Daily Maximum" under "Other Limits" in Part I of the permit.
d. The "average annual concentration," other than for fecal coliform bacteria, is the sum of the
concentrations of all daily discharges sampled and/or measured during a calendar year on
which daily discharges are sampled and measured divided by the number of daily
discharges sampled and/or measured during such year (arithmetic mean of the daily
concentration values). The daily concentration value is equal to the concentration of a
composite sample or in the case of grab samples is the arithmetic mean (weighted by flow
value) of all the samples collected during that calendar day . The average yearly count for
fecal coliform bacteria is the geometric mean of the counts for samples collected during a
calendar year. This limitation is identified as "Annual Average" under "Other Limits" in
Part I of the permit.
e. The "daily average concentration" (for dissolved oxygen) is the minimum allowable amount
of dissolved oxygen required to be available in the effluent prior to discharge averaged
over a calendar day. If only one dissolved oxygen sample is taken over a calendar day, the
sample is considered to be the "daily average concentration" for the discharge. It is
identified as "daily average" in the text of Part I.
f. The "quarterly average concentration" is the average of all samples taken over a calendar
quarter..It is identified as "Quarterly Average Limitation" in the text of Part I of the permit.
g. A calendar quarter is defined as one of the following distinct periods: January through
March, April through June. July through September, and October through December.

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Page 3 of 14
7. Other Measurements
a. Flow. (MGD): The flow limit expressed in this permit is the 24 hours average flow,
averaged monthly. It is determined as the arithmetic mean of the total daily flows recorded
during the calendar month.
b. An "instantaneous flow measurement" is a measure of flow taken at the time of sampling,
when both the sample and flow. will be representative of the total discharge.
c. A "continuous flow measurement" is a measure of discharge flow from the facility which
occurs continually without interruption throughout the operating hours of the facility. Flow
shall be monitored continually except for the !frequent times when there may be no flow
or for infrequent maintenance activities on the . Ow device.
8. Types of Samples
a. Composite Sample: A composite sample sha: zt of:
(11 a series of grab samples collected at equal til ,e intervals over a 24 hour period of
discharge and combined proportional to the rate of flow measured at the time of
individual sample collection, or
(2) a series of grab samples of equal volume collected over a 24 hour period with the time
intervals between samples determined . a preset number of gallons passing the
sampling point. Flow measurement bet sample intervals shall be determined by
use of a flow recorder and totalizer, an present gallon interval between sample
collection fixed at no greater than 1/24 c expected total daily flow at the treatment
system, or
(3) a single. continuous sample collected o- 4 hour period proportional to the rate of
flow.
In accordance with (1) above, the time interval .veen influent grab samples shall be no
greater than once per hour, and the time interval ..eween effluent grab samples shall be no
greater than once per hour except at wastewater treatment systems having a detention time
of greater than 24 hours. In such cases, effluent grab samples may be collected at time
interva]s evenly spaced over the 24 hour period which are equal in number of hours to the
detention time of the system in number of days. However, in no case may the time interval
between effluent grab samples be greater than six (C,) hours nor the number of samples less
than four (4) during a 24 hour sampling period.
b. Grab Sample: Grab samples are individual samples collected over a period of time not
exceeding 15 minutes; the grab sample can be taken manually. Grab samples must be
representative of the discharge or the receiving waters.
9. Calculation of Means •
a Arithmetic Mean: The arithmetic mean of any set of values is the summation of the
individual values divided by the number of individual values.
b. Geometric Mean: The geometric mean of any set of values is the Nth root of the product of
the individual values where N is equal to the number of individual values. The geometric
mean is equivalent to the antilog of the arithmetic mean of the logarithms of the individual
values. For purposes of calculating the geometric mean. values of zero (0) shall be
considered to be one (I).

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Page 4 of 14
c. Weighted by Flow Value: Weighted by flow value means the summation of each
concentration times its respective flow divided by the summation of the respective flows.
10. Calendar Dav
A calendar day is defined as the period from midnight of one day until midnight of the next
day. However, for purposes of this permit, any consecutive 24-hour period that reasonably
represents the calendar day may be used for sampling.
11. Hazardous Substance
A hazardous substance means any substance designated under 40 CFR Part 116 pursuant to
Section 311 of the Clean Water Act.
12. Toxic Pollutant
A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
SECTION B. GENERAL. CONDITIONS
1. Duty to Comply
The permittee must comply with all conditions of this permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit
termination, revocation and reissuance, or modification; or denial of a permit renewal
application.
a. The permittee shall comply with effluent standards or prohibitions established under
section 307(a) of the Clean Water Act for toxic pollutants and with standards for sewage
sludge use or disposal established under section 405(d) of the Clean Water Act within the
time provided in the regulations that establish these standards or prohibitions or standards
for sewage sludge use or disposal, even if the permit has not yet been modified to
incorporate the requirement.
b. The Clean Water Act provides that any person who violates a permit condition is subject to
a civil penalty not to exceed S25,000 per day for each violation. Any person who
negligently violates any permit condition is subject to criminal penalties of 52,500 to
525,000 per day of violation, or imprisonment for not more than 1 year, or both. Any
person who knowingly violates permit conditions is subject to criminal penalties of$5,000
to S50,000 per day of violation, or imprisonment for not more than 3 years, or both. Also,
any person who violates a permit condition may be assessed an administrative penalty not
to exceed $10,000 per violation with the maximum amount not to exceed S125,000. [Ref:
Section 309 of the Federal Act 33 U.S.C. 1319 and 40 CFR 122.41 (a)]
c. Under state law, a civil penalty of not more than ten thousand dollars ($10,000) per
violation may be assessed against any person who violates or fails to act in accordance with
the terms, conditions, or requirements of a permit. [Ref: North Carolina General Statutes
143-215.6A]
d. Any person may be assessed an administrative penalty by the Administrator for violating
section 301, 302, 306, 307, 308, 318, or 405 of the Act, or any permit condition or
limitation implementing any of such sections in a permit issued under section 402 of the
Act. Administrative penalties for Class I violations are not to exceed $10,000 per violation,
with the maximum amount of any Class I penalty assessed not to exceed $25,000.

•
Part II
Page 5 of 14
Penalties for Class II violations are not to exceed S10,000 per day for each day during
which the violation continues, with the maximum amount of any Class II penalty not to
exceed S125,000.
2. Putv to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use
or disposal in violation of this permit which has a reasonable likelihood of adversely affecting
human health or the environment.
3. Civil and Criminal Liability
Except as provided in permit conditions on "Bypassing" (Part II, C-4) and "Power Failures"
(Part II, C-7), nothing in this permit shall be construed to relieve the permittee from any
responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-
215.6 or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the permittee is
responsible for consequential damages, such as fish kills, even though the responsibility for
effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve
the permittee from any responsibilities, liabilities. or penalties to which the permittee is or may
be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321.
Furthermore, the permittee is responsible for consequential damages, such as fish kills. even
though the responsibility for effective compliance may be temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal
property. or any exclusive privileges, nor does it authorize any injury to private property or any
invasion of personal rights, nor any infringement of Federal, State or local laws or regulations.
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical
structures or facilities or the undertaking of any work in any navigable waters.
7. Severability
The provisions of this permit are severable, and if any provision of this permit, or the
application of any provision of this permit to any circumstances, is held invalid, the application
of such provision to other circumstances, and the remainder of this permit, shall not be affected
thereby. •
8. Duty to Provide Information
The permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any
information which the Permit Issuing Authority may request to determine whether cause exists
for modifying. revoking and reissuing, or terminating this permit or to determine compliance
with this permit. The permittee shall also furnish to the Permit Issuing Authority upon
request. copies of records required to be kept by this permit.

• • Part II
Page 6 of 14
9. Duty to Reapply
If the permittee wishes to continue an activity regulated by this permit after the expiration date
of this permit, the permittee must apply for and obtain a new permit.
10. expiration of Permit
The permittee is not authorized to discharge after the expiration date. In order to receive
automatic authorization to discharge beyond the expiration date, the permittee shall submit such
information, forms, and fees as are required by the agency authorized to issue permits no later
than 180 days prior to the expiration date. Any permittee that has not requested renewal at least
180 days prior to expiration. or any permittee that does not have a permit after the expiration
and has not requested renewal at least 180 days prior to expiration, will subject the permittee to
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications, reports. or information submitted to the Permit Issuing Authority shall be
signed and certified.
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section,
a responsible corporate officer means: (a) a president, secretary, treasurer or vice
president of the corporation in charge of a principal business function, or any other
person who performs similar policy or decision making functions for the corporation,
or (b) the manager of one or more manufacturing production or operating facilities
employing more than 250 persons or having gross annual sales or expenditures
exceeding 25 million (in second quarter 1980 dollars), if authority to sign documents
has been assigned or delegated to the manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,
respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal
executive officer or ranking elected official.
b. All reports required by the permit and other information requested by the Permit Issuing
Authority shall be signed by a person described above or by a duly authorized
representative of that person. A person is a duly authorized representative only if:
(I) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for
the overall operation of the regulated facility or activity, such as the position of plant
manager, operator of a well or well field, superintendent, a position of equivalent
responsibility, or an individual or position having overall responsibility for
environmental matters for the company. (A duly authorized representative may thus be
either a named individual or any individual occupying a named position.); and
(3) The written authorization is submitted to the Permit Issuing Authority.

Part II
Page 7 of 14
c. Certification. Any person signing a document under paragraphs a. or b. of this section
shall make the following certification:
"I certify, under penalty of law, that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of
the person or persons who manage the system, or those persons directly responsible for
gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for
knowing violations."
12. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The filing of a
request by the permit-tee for a permit modification, revocation and reissuance, or termination, •
or a notification of planned changes or anticipated noncompliance does not stay any permit
condition.
13. permit Modification. Revocation and Reissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed
by the laws. rules, and regulations contained in Title 40, Code of Federal Regulations, Parts
122 and 123; Title 15A of the North Carolina Administrative Code, Subchapter 2H .0100; and
North Carolina General Statute 143-215.1 et. a].
14. Previous Permits
All previous National Pollutant Discharge Elimination System Permits issued to this facility,
whether for operation or discharge, are hereby revoked by issuance of this permit. [The
exclusive authority to operate this facility arises under this permit. The authority to operate the
facility under previously issued permits bearing this number is no longer effective. ) The
conditions, requirements. terms, and provisions of this permit authorizing discharge under the
National Pollutant Discharge Elimination System govern discharges from this facility.
SECTION C. OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
1. Certified Operator
Pursuant to Chapter 90A-44 of North Carolina General Statutes, and upon classification of the
facility by the Certification Commission, the permittee shall employ a certified wastewater
treatment plant operator in responsible charge (ORC) of the wastewater treatment facilities.
Such operator must hold a certification of the grade 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 any
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 shall 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.

Part II
Page 8 cf 14
2. Proper Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the permittee to
achieve compliance with the conditions of this permit. Proper operation and maintenance also
includes adequate laboratory controls and appropriate quality assurance procedures. This
provision requires the operation of back-up or auxiliary facilities or similar systems which are
installed by a permittee only when the operation is necessary to achieve compliance with the
conditions of the permit.
3. Need to Halt or Reduce not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been
necessary to halt or reduce the permitted activity in order to maintain compliance with the
condition of this permit.
4. Bypassing, of Treatment Facilities
a. Definitions
(1) "Bypass" means the known diversion of waste streams from any portion of a treatment
facility including the collection system, which is not a designed or established or
operating mode for the facility.
(2) "Severe property damage" means substantial physical damage to property, damage to
the treatment facilities which causes them to become inoperable, or su.bstantiar and
permanent loss of natural resources which can reasonably be expected to occur in the
absence of a bypass. Severe property damage does not mean economic loss caused by
delays in production.
b. Bypass not exceeding limitations.
The permittee may allow any bypass to occur which does not cause effluent limitations to
be exceeded, but only if it also is for essential maintenance to assure efficient operation.
These bypasses are not subject to the provisions of Paragraphs c. and d. of this section.
c. Notice
(1) Anticipated bypass. If the permittee knows in advance of the need for a bypass, it
shall submit prior notice, if possible at least ten days before the date of the bypass;
including an evaluation of the anticipated quality and affect of the bypass.
(2) Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass as
required in Part II, E. 6. of this permit. (24 hour notice).
d. Prohibition of Bypass
(1) Bypass is prohibited and the Permit Issuing Authority may take enforcement action
against a permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property
damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary
treatment fac:iities, retention of untreated wastes or maintenance during normal

Part II
Page 9 of 14
periods of equipment downtime. This condition is not satisfied if adequate backup
equipment should have been installed in the exercise of reasonable engineering
judgment to prevent a bypass which occurred during normal periods of equipment
downtime or preventive maintenance; and
(C) The permittee submitted notices as require under Paragraph c. of this section.
(2) The Permit Issuing Authority may approve an anticipated bypass, after considering its
adverse affects, if the Permit Issuing Authority determines that it will meet the three
conditions listed above in Paragraph d. (1) of this section.
5. Upsets
a. Definition.
"Upset " means an exceptional incident in :.`,ere is unintentional and temporary
noncompliance with technology based pe; luent limitations because of factors
beyond the reasonable control of the permitter :pset does not include noncompliance
to the extent caused by operational error, . 1. r perly designed treatment facilities,
inadequate treatment facilities, lack of preventive raintenance, or careless or improper
operation.
b. Effect of an upset.
An upset constitutes an affirmative defense 1 action brought for noncompliance with
such technology based permit effluent limita• if the requirements of paragraph c. of this
condition are met. No determination mad( ng administrative review of claims that
noncompliance was caused by upset. and an action for noncompliance, is final
administrative action subject to judicial revie
• c. Conditions necessary for a demonstration of up
A permittee who wishes to establish the affirm;:..ve defense of upset shall demonstrate,
through properly signed, contemporaneous operating logs, or other relevant evidence that:
(1) An upset occurred and that the permittee can identify the cause(s) of the upset;
(2) The permittee facility was at the time being pror;.rly operated: and
(3) The permittee submitted notice of the upset as required in Part II, E. 6. (b) (B) of this
permit.
(4) The permittee complied with any remedial measures required under Part II, B. 2. of this
permit.
d. Burden of proof. •
In any enforcement proceeding the permittee seeking to establish the occurrence of an upset
has the burden of proof.
6. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or
control of wastewaters shall be utilized/disposed of in accordance with NCGS 143-215.1 and in
a manner such as to prevent any pollutant from such materials from entering waters of the State
or navigable waters of the United States. The permittee shall comply with all existing federal

•
Part II
Page 10 of 14
regulations governing the disposal of sewage sludge. Upon promulgation of 40 CFR Part 503,
any permit issued by the Permit Issuing Authority for the utilization/disposal of sludge may be
reopened and modified. or revoked and reissued, to incorporate applicable requirements at 40
CFR Part 503. The permittee shall comply with applicable 40 CFR Part 503 Standards for the
Use and Disposal of Sewage Sludge (when promulgated) within the time provided in the
regulation, even if the permit is not modified to incorporate the requirement. The permittee
shall notify the Permit Issuing Authority of any significant change in its sludge use or disposal
practices.
7. Power Failures
The permittee is responsible for maintaining adequate safeguards as required by DEM
• Regulation, Title 15A, North Carolina Administrative Code, Subchapter 2H, .0124 Reliability,
to prevent the discharge of untreated or inadequately treated wastes during electrical power
failures either by means of alternate power sources, standby generators or retention of
inadequately treated effluent.
SECTION D. MONITORING AND RECORDS
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of the
volume and nature of the permitted discharge. Samples collected at a frequency less than daily
shall be taken on a day and time that is characteristic of the discharge over the entire period
which the sample represents: All samples shall be taken at the monitoring points specified in
this permit and, unless otherwise specified, before the effluent joins or is diluted by any other
wastestream, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Permit Issuing Authority.
• 2. Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month
and reported on a monthly Discharge Monitoring Report (DMR) Form (DEM No. MR 1, 1.1, 2,
31 or alternative forms approved by the Director, DEM, postmarked no later than the 30th day
following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the
case of a new facility, on the last day of the month following the commencement of discharge.
Duplicate signed copies of these, and all other reports required herein, shall be submitted to the
following address:
Division of Environmental Management
Water Quality Section
ATTENTION: Central Files
Post Office Box 29535
Raleigh, North Carolina 27626-0535
3. Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements of
the volume of monitored discharges. The devices shall be installed, calibrated and maintained
to ensure that the accuracy of the measurements are consistent with the accepted capability of
that type of device. Devices selected shall be capable of measuring flows with a maximum
deviation of less than + 10% from the true disclicsge rates throughout the range of expected

Part II
• Page 11of14
• discharge volumes. Once-through condenser cooling water flow which is monitored by pump
logs, or pump hour meters as specified in Part I of this permit and based on the manufacturer's
pump curves shall not be subject to this requirement.
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published
pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to
regulations published pursuant to Section 304(g), 33 USC 1314, of the Federal Water
Pollution Control Act, as Amended, and Regulation 40 CFR 136;or in the case of sludge use or
disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless
other test procedures have been specified in this permit.
To meet the intent of the monitoring required by this permit, all test procedures must produce
minimum detection and reporting levels that are below the permit discharge requirements and
all data generated must be reported down to the minimum detection or lower reporting level of
the procedure. If no approved methods are determined capable of achieving minimum
detection and reporting levels below permit discharge requirements, then the most sensitive
(method with the lowest possible detection and reporting level) approved method must be used.
5. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly
renders inaccurate, any monitoring device or method required to be maintained under this
permit shall, upon conviction, be punished by a fine of not more than S10,000 per violation, or
by imprisonment for not more than two years per violation, or by both. If a conviction of a
person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fine of not more than S20,000 per day of violation, or by imprisonment of not
more than 4 years. or both.
6. Records Retention
Except for records of monitoring information required by this permit related to the permittee's
sewage sludge use and disposal activities, which shall be retained for a period of at least five
years(or longer as required by 40 CFR 503), the permittee shall retain records of all
monitoring information, including all calibration and maintenance records and all original strip
chart recordings for continuous monitoring instrumentation, 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. This period may be extended by request of the Director at any time.
7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the
permttee shall record the following information:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses; •
e. The analytical techniques or methods used; and
f. The results of such analyses.

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8. Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an authorized
contractor acting as a representative of the Director), upon the presentation of credentials and
other documents as may be required by law, to;
a. Enter upon the permittee's premises where a regulated facility or activity is located or
conducted, or where records must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the
conditions of this permit;
c. Inspect at reasonable times any facilities, equipment (including monitoring and control
equipment), practices, or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or
as otherwise authorized by the Clean Water Act, any substances or parameters at any
location.
SECTION E. REPORTING REQUIREMENTS
1. Chance in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this
permit. The discharge of any pollutant identified in this permit more frequently than or at a
level in excess of that authorized shall constitute a violation of the permit.
2. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned physical
alterations or additions to the permitted facility. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for determining
whether a facility is a new source in 40 CFR Part 1.22.29 (b); or
b. The alteration or addition could significantly change the nature or increase the quantity of
pollutants discharged. This notification applies to pollutants which are subject neither to
effluent limitations in the permit. nor to notification requirements under 40 CFR Part 122.42
(a) (1).
c. The alteration or addition results in a significant change in the permittee's sludge use or
disposal practices, and such alternation, addition or change may justify the application of
permit conditions that are different from or absent in the existing permit, including
notification of additional use or disposal sites not reported during the permit application
process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The permittee shall give advance notice to the Director of any planned changes in the permitted
facility or activity which may result in noncompliance with permit requirements.

Part II
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4. Transfers
This permit is not transferable to any person except after notice to the Director. The Director
may require modification or revocation and reissuance of the permittee and incorporate such
other requirements as may be necessary under the Clean Water Act.
5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit.
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II.
D. 2 of this permit) or forms provided by the Director for reporting results of monitoring of
sludge use or disposal practices.
b. If the permittee monitors any pollutant more frequently than required by the permit, using
test procedures specified in Part II, D. 4. of this permit or in the case of sludge use or
disposal. approved under 40 CFR 503, or as specified in this permit, the results of this
monitoring shall be included in the calculation and reporting of the data submitted in the
DMR.
c. Calculations for all limitations which require averaging of measurements shall utilize an
arithmetic mean unless otherwise specified by the Director in the permit.
6. Twenty-four Hour Reporting
a. The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall be
provided orally within 24 hours from the time the permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the
permittee becomes aware of the circumstances. 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 no been corrected, the anticipated time
it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent
reoccurrence of the noncompliance.
b. The following shall be included as information which must be reported within 24 hours
under this paragraph:
(1) Any unanticipated bypass which exceeds any effluent limitation in the permit.
(2)Any upset which exceeds any effluent limitation in the permit.
(3) Violation of a maximum daily discharge limitation for any of the pollutants listed by the
Director in the permit to be reported within 24 hours.
c. The Director may waive the written report on a case-by-case basis for reports under
paragraph b. above of this condition if the oral report has been received within 24 hours.
7. Other Noncompliance
The permittee shall report all instances of noncompliance not reported under Part II. E. 5 and 6.
of this permit at the time monitoring reports are submitted. The reports shall contain the
information listed in Part II. E. 6. of this permit.

Part II
Page 14 of 14
8. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a permit
application, or submitted incorrect information in a permit application or in any report to the
Director, it shall promptly submit such facts or information.
•
9. Noncompliance Notification
The permittee shall report by telephone to either the central office or the appropriate regional
office of the Division 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 water pollution control facility which results in the discharge of
significant amounts of wastes which are abnormal in quantity or characteristic, such as the
dumping of the contents of a sludge digester: 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 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.
Persons reporting such occurrences by telephone shall also file a written report in letter form
within 5 days following first knowledge of the occurrence.
10. Availability of Reports
Except for data determined to be confidential under NCGS I43-215.3(a)(2) or Section 308 of
the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be
available for public inspection at the offices of the Division of Environmental Management. As
required by the Act, effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided
for in NCGS 143-215.1(b)(2) or in Section 309 of the Federal Act.
11. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to be
maintained under this permit, including monitoring reports or reports of compliance or
noncompliance shall, upon conviction, be punished by a fine of not more than S10,000 per
violation, or by imprisonment for not more than two years per violation, or by both.

PART III
OTHER REQUIREMENTS
A. Construction
No construction of wastewater treatment facilities or additions to add to the plant's treatment
capacity or to change the type of process utilized at the treatment plant shall be begun until
Final Plans and Specifications have been submitted to the Division of Environmental
Management and written approval and Authorization to Construct has been issued.
B. Groundwater Monitoring
The permittee shall, upon written notice from the Director of the Division of Environmental
Management, conduct groundwater monitoring as may be required to determine the
compliance of this NPDES permitted facility with the current groundwater standards.
C. Changes in Discharges of Toxic Substances
The permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to
believe:
a.That any activity has occurred or will occur which would result in the discharge, on a
routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that
discharge will exceed the highest of the following "notification levels";
(1) One hundred micrograms per liter(100 ug/1);
(2)Two hundred micrograms per liter (200 ug/1) for acrolein and acrylonitrile; five
hundred micrograms per liter (500 ug/1) for 2.4-dinitrophenol and for 2-methyl-4.6-
dinitrophenol; and one milligram per liter (1 mg/1) for antimony;
(3) Five (5) times the maximum concentration value reported for that pollutant in the
permit application.
b. That any activity has occurred or will occur which would result in any discharge,.on a
non-routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if
that discharge will exceed the highest of the following "notification levels";
(1)Five hundred micrograms per liter (500 ug/1);
(2) One milligram per liter (1 mg/1) for antimony;
(3) Ten (10) times the maximum concentration value reported for that pollutant in the
permit application.
D. Requirement to Continually Evaluate Alternatives to Wastewater Discharges
The permittee shall continually evaluate all wastewater disposal alternatives and pursue the
most environmentally sound alternative of the reasonably cost effective alternatives. If the
facility is in substantial non-compliance with the terms and conditions of the NPDES permit
or governing rules, regulations or laws, the permittee shall submit a report in such form and
detail as required by the Division evaluating these alternatives and a plan of action within
sixty (60) days of notification by the Division.

Part III Permit No. NC0083810
E. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT(QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure-Revised*September 1989)or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 31% (defined as treatment two in the North Carolina procedure document).
The permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The first test will be performed after thirty days from the effective date
of this permit during the months of January, April, July and October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form(MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally,DEM Form AT-1 (original)is to be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management indicate potential impacts to the receiving stream, this
permit may be re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
F. Toxicity Reopener Condition
This permit shall be modified, or revoked and reissued to incorporate toxicity limitations and
monitoring requirements in the event toxicity testing or other studies conducted on the effluent or
receiving stream indicate that detrimental effects may be expected in the receiving stream as a result
of this discharge.

•
PART IV
ANNUAL AD1.N1STERTh.G AND COMPLIANCE MONITORING FEE REQIJIRENIFNTS
A. The perminee must pay the annual administering and compliance monitoring fee within 30
(thirty) days after being billed by the Division. Failure to pay the fee in a timely manner in
accordance with 15A NCAC 2H .0105(b)(4) may cause this Division to initiate action to
revoke the permit.

State of North Carolina
Department of Environment, 4
• Health and Natural Resources
1)\ Division of Environmental Management
ET F
James B. Hunt, Jr., Governor � C �� gL1.H
Jonathan B. Howes, Secretary G 1cF�
A. Preston Howard, Jr., P.E., Director hf�Y
199,E
May 6, 1994NOORESWEItE DiY1�,8D t,F� yru'ti .'_ r
alit C
Mr. C. Martin Pearson Subject: NPDES Permit Modification F1 r
Gaston Merchants Oil Company NPDES Permit No. NC0083810
PO Box 758 Omni Mart #32
Gastonia, NC 28052 Gaston County
Dear Mr. Pearson:
On April 29, 1994, the Division of Environmental Management issued NPDES Permit No.
NC0083810 to Gaston Merchants Oil Company. A review of the permit file has indicated that an
error was inadvertently made in the permit. Accordingly, we are forwarding herewith
modifications to the subject permit to correct the error. These permit modifications are to the
effluent page. The modification corrects the monitoring frequency for benzene and toluene from
2/month to monthly.
Please find enclosed an amended effluent page which should be inserted into your permit. The
old page should be discarded. All other terms and conditions contained in the original permit
remain unchanged and in full effect. These permit modifications are issued pursuant to the
requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement
between North Carolina and the U. S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit
modification are unacceptable to you, you have the right to an adjudicatory hearing upon written
request within thirty (30) days following receipt of this letter. 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, Post Office Drawer 27447, Raleigh, North
Carolina 27611-7447. Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning these permit modifications, please contact Mr. Charles
Alvarez at telephone number 919/733-5083.
Sincerely yours,
1- ✓A. Preston Howard, Jr., P.E.
cc. Mr. Jim Patrick, EPA (/
e
Central Files
Permits and Engineering Files
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

A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0083810
During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (specify) Measurement Sample *Sample
Mon. Avg. Daily Max Mon. Avg. Daily Max. Frequency Type t Location
Flow** Continuous Recording E
Toluene 38.0 µg/I Monthly Grab E,U,D
Benzene 1159.0 µg/I Monthly Grab E,U,D
Chronic Toxicity*** Quarterly Grab E
MTBE Monthly Grab E
* Sample location: E - Effluent, U-Upstream 60 feet above discharge,D - Downstream at Caldwell Street
** All volumes of wastewater leaving the facility shall be monitored. If continuous flow monitoring is not feasible, then the discharger shall
record the approximate time that discharge began and ended, along with the instantaneous flow at the time of the effluent sampling.
*** Chronic Toxicity (Ceriodaphnia) P/F at 31%; January, April, July and October; See Part III,Condition E.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab
sample.
Design and Construction of the waste treatment facility will emphasize the use of plastic pipes and fittings where practical.
After collecting six months of upstream and downstream data for benzene and toluene,the facility can request that the data be reviewed and if
appropriate monitoring elminated.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0083810
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1,
other lawful standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Gaston Merchants Oil Company
is hereby authorized to discharge wastewater from a facility located at
Omni Mart#32
US Hwy 321
south of Gastonia
Gaston County
to receiving waters designated as an unnamed tributary to Long Creek in the Catawba River Basin
in accordance with effluent limitations,monitoring requirements, and other conditions set forth in
Parts I, II, and III hereof.
This permit shall become effective
This permit and the authorization to discharge shall expire at midnight on September 30, 1996
Signed this day
r
A. Preston Howazikji. .E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

Permit No. NC0083810
SUPPLEMENT TO PERMIT COVER SHEET
Gaston Merchants Oil Company
is hereby authorized to:
1. Enter into a contract for construction of a wastewater treatment facility, and
2. Make an outlet into an unnamed tributary to Long Creek, and
3. After receiving an Authorization to Construct from the Division of Environmental
Management,construct and operate a 0.0144 MGD wastewater treatment facility located
-at Omni Mart#32, US Hwy 321, south of Gastonia, Gaston County (See Part III of this
Permit), and
4. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Long Creek which is classified class C waters in the Catawba River
Basin.

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A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0083810
During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (specify) Measurement Sample *Sample
Mon. Avg, Daily Max Mon. Avg, Daily Max. Frequency Type Location
Flow** Continuous Recording E
Toluene 38.0 µg/I 2/Month Grab E
Benzene 1159.0 14/1 2/Month Grab E
Chronic Toxicity*** Quarterly Grab E
MTBE Monthly Grab E
* Sample location:E-Effluent,U-Upstream 60 feet above discharge,D-Downstream at Caldwell Street
** All volumes of wastewater leaving the facility shall be monitored. If continuous flow monitoring is not feasible,then the discharger shall
record the approximate time that discharge began and ended,along with the instantaneous flow at the time of the effluent sampling.
*** Chronic Toxicity(Ceriodaphnia)P/F at 31%; January, April,July and October, See Part III,Condition E.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab
sample.
Design and Construction of the waste treatment facility will emphasize the use of plastic pipes and fittings where practical.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

III Permit No. NC0083810
E. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT(QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure-Revised *September 1989)or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 31% (defined as treatment two in the North Carolina procedure document).
The permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The first test will be performed after thirty days from the effective date
of this permit during the months of January, April, July and October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally,DEM Form AT-1 (original)is to be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management indicate potential impacts to the receiving stream, this
permit may be re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
F. Toxicity Reopener Condition
This permit shall be modified, or revoked and reissued to incorporate toxicity limitations and
monitoring requirements in the event toxicity testing or other studies conducted on the effluent or
receiving stream indicate that detrimental effects may be expected in the receiving stream as a result
of this discharge.

State of North Carolina
Department of Environment,
Health and Natural Resources • •
Division of Water Quality ,fit,
. i
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary p E H N FR.
A. Preston Howard, Jr., P.E., Director
ENVli'I:.
NA II
October 28, 1996
Mr. C. Martin Pearson OCT 3 199E
Gaston Merchants Oil Company
Post Office Box 758 DIVISION OF DO/I-wii`:' i i. ":
Gastonia, North Carolina 28052 MORESV'iLLE
Subject: Issuance of Gen. Permit No. NCG510000
Cert. of Coverage NCG510368
(formerly NC0083810)
Omni Mart No. 32
Gaston County
Dear Mr. Pearson:
In accordance with your application for a discharge permit renewal received on April 1, 1996 by the
Division, we are forwarding herewith the subject Certificate of Coverage to discharge under the subject state -
NPDES general permit for petroleum contaminated groundwater remediation systems. Authorization is hereby
granted for the continued operation of a groundwater remediation system with discharge of treated wastewater
• into an unnamed tributary to Long Creek;a Class C stream in the Catawba River Basin.-This Certificate of
Coverage is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
. . ....Memorandum of Agreement.between Nnrth.Caraliaa.and the.US..Environmen.tal2totection.Agency dated
December 6, 1983 and as subsequently amended.
This Certificate of Coverage is reissued under a newly revised general permit for discharges associated
with groundwater remediation systems (NCG510000 issued August 22, 1996). The new general permit is
more comprehensive than the original general permit in that it covers remediation of groundwater
contaminated with heavier fuels(such as diesel, fuel oil, and kerosene) as well as gasoline contamination.
Based on the source of your contamination, specifically gasoline, effluent page A. (1) applies to your
facility and lists required effluent limitations and monitoring frequencies.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division
of Water Quality. The Division of Water Quality may require modification or revocation and reissuance of the
certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources or any other Federal or Local
governmental permit that may be required.
Any sludge generated from this treatment facility must be disposed of in accordance with G.S. 143-
215.1 and in a manner approved by the North Carolina Division of Water Quality.
•
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

Mr. Pearson
October 28, 1996
Page 2
In the event that the facility fails 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 wastewater treatment or disposal facilities.
If you have any questions or need additional information, please contact Paul Clark at telephone
number(919) 733-5083, extension 580.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P. E.
cc: Central Files
Mooresville Regional Office,Water Quality Section
Permits and Engineering Unit
Facility Assessment Unit
Jim Kelly,Petroleum Environmental Consultants, Inc.

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG510000
CERTIFICATE OF COVERAGE NO. NCG510368
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SIMILAR WASTEWATERS
UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act,as amended,
Gaston Merchants Oil Company
is hereby authorized to construct and operate or continue operation of a groundwater treatment system consisting of
an oil/water separator, an air stripping system and carbon filtration for petroleum contaminated groundwater or
similar waste streams with the discharge of treated wastewater from a facility located at
Omni Mart No. 32
US Highway 321
south of Gastonia
Gaston County
to receiving waters designated as an unnamed tributary to Long Creek in the Catawba River Basin
in accordance with the effluent limitations,monitoring requirements, and other conditions set forth in Parts I, II,III
and IV of General Permit No.NCG510000 as attached.
This certificate of coverage shall become effective October 28, 1996
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day October 28, 1996
Original Signed By
David A. Goodrich
A. Preston Howard,Jr.,P.E.,Director
Division of Water Quality
By Authority of the Environmental Management Commission

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ROAD CLASSIFICATION SCALE 1 :24 000
PRIMARY HIGHWAY LIGHT-DUTY
IGH -DUDSRO A, ARDOR 0 1 MILE
HARD SURFACE p
SECONDARY HIGHWAY 0 7000 FEET
HARD SURFACE =MIN= UNIMPROVED ROAD — — —
1 0 1 KILOMETER
Latitude 35°16'39" Longitude 81°11'15" Ira F4»»«4,44 F—
Map # F14SW Sub-basin 03-08-36 CONTOUR INTERVAL 20 FEET
Stream Class C
QUAD LOCATION Omni-Mart #32
Discharge Class NCG510368
Receiving Stream UT to Lona Creek/Catawba River ;• . Gaston County
Design Q Variable Permit expires 9/30/01 Groundwater Remediation

NPDES WASTE LOAD ALLOCATION �-
PERMIT NO.:
NC0083810 Modeler Date Rec. #
..lMo/ /y/t//53 /4Z7
PERMITTEE NAME: Gaston Merchants Oil Company
Omni Mart#32 Drainage Area(mil
) 0..2 Avg. Streamflow (cfs): o. 351
FACILITY NAME:
Facility Status: Proposed 7Q10 (cfs) 0•05 Winter 7Q10(cfs) 0 .O ? 30Q2 (cfs) o•/2
Permit Status: New Toxicity Limits:IWC 31 % Acu Chronic
Major Minor '‘l Instream Monitoring: / w� s/u•'c.,t. 0 f fob � /4 cm-) out/i-,
}I c, DEPT. OF /nw.r drf.� Ls^w ixd a.,1i A�i l`,.�,y�i .4..,111. yc4
Pipe No.: 001 i s z;: . ,,,,ryr, HEALTH; 2 , ....Q -
e, 1.-,:,._, t4_... RESOURCES Parameters
Design Capacity: 0.0144 MGD Upstream Y Location (,off;aAwP .I 411-rav
Domestic (% of Flow): FEB 8 19941 Downstream Y Location ° 11.
Industrial (% of Flow): 100 %
j!V!SION OF ENVI18:;'OTAL MANAGEMENT Effluent
Comments: YOOAESVILLE REiJO?1A1 OFFICE Characteristics Summer Winter
RO wants instream monitoring BOD5 (mg/1) —
NH3-N (mg/1)
D.O. (mg/1)
RECEIVING STREAM:an unnamed tributary to Long Creek
Class: C TSS (mg/1) _
Sub-Basin: 03-08-36 F. Col. (/100 ml) —
Reference USGS Quad: F14SW (please attach) pH (SU)
County: Gaston
Regional Office: Mooresville Regional Office � ?(,-G /15? (cop)
Previous Exp. Date: 00/00/00 Treatment Plant Class: I �/ 0/
Classification changes within three miles: / "� (6yf e) 31 (GI
ntiBr (_41 )4.,44.
Requested by: Charles Alvarez Date: 10/14/93 -There shall-be no3'ischarge o-_floating solids or visibi T ain in other than trace amounts.
-;•iinirt�a
Prepared by: I1'J Date: (�L��1�T -Design and Construction of the Waste Treatment Facility will emphasize the use of plastic pipes
2744_q___ an d fittings where practically possible.
Reviewed y Date: - A reopener clause should be placed in the permit to allow for additional limits on these or other
-na toxicants should the whole effluent toxicity testing results indicate toxic effects.

FACT SHEET FOR WASTELOAD ALLOCATION
Request# 7627
Facility Name: Omni Mart#32
NPDES No.: NC0083810
Type of Waste: Industrial - 100%
Facility Status: Proposed
Permit Status: New
Receiving Stream: UT Long Creek
Stream Classification: C
Subbasin: 030836
County: Gaston Stream Characteristic:
Regional Office: MRO `07-6 USGS #
Requestor: Alvarez Date:
Date of Request: 10/14/93 Drainage Area(mi2): 0.29
Topo Quad: F14SW Summer 7Q10 (cfs): 0.05
Winter 7Q10(cfs): 0.09
Average Flow(cfs): 0.34
30Q2 (cfs): 0.12
IWC(%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA,etc.)
Facility requesting NPDES permit for discharge of contaminated groundwater remediation project.
MRO is requesting instream monitoring for benzene and toluene to determine if the plume is
seeping through a hillside and into a Long Creek tributary. This monitoring should be 1/month for
5 months.
Special Schedule Requirements and additional comments from Reviewers:
/��• �l�fhli/?� J f,4 /S vn orr r? r? r�� (17O/YQ�rn)2i/3.
� � phi�v, dc� .�to,-1, h1 f,,,�,�, .sruf '( ' Az*rr�
a 1. ,�,��a piktrk 07, 4 d,y ;�,r.!I/� 4 •'9t/l fi .) ekg Lie i1r/
S j/� L
4 f,-���'Made r! ► {1Ybf sr7 h90N y`1.4 w17�� �a� 7- C1iY7
I C�Qia/a/l�G €%?1 - •
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Recommended b • V� cumL/ Date: 1/0/94
Reviewed by
Instream Assessment: ( � ?Zr ,LVLQ-BY Date: 1 1/a
Regional Supervisor: D" (J4L4J4 i1 6-y4•41h Date: 1/131gq
•Permits &Engineering: )iwj%L Date:
___4/ 449
RETURN TO TECHNICAL SERVICES BY: r FR a > 19c4
N.C. 1):;YT. OF
ENVIRONMENT. T-T ;; ' '
et) f& NATURAL RES )
(�U C : �;U �i r vi I J J6N1 .7..2 Mt.
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MERESVillE

2
TOXICS/CONVENTIONAL PARAMETERS
Type of Toxicity Test: CHRONIC CERIODAPHNIA QRTRLY
Existing Limit: None
Recommended Limit: 31%
Monitoring Schedule: JAN APR JUL OCT
Recommended Limits
Mon. Avg. Daily Max. Frequency WQ/EL
Wasteflow (MGD): 0.0144
Benzene (µg/1): i3:-4 115°I WQ
Toluene (11g/1): 38.5 WQ
Methyl Tert Butyl Ether(µg/1): monitor
_X_ Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.
MISCELLANEOUS INFORMATION&SPECIAL CONDITIONS
Special Instructions or Conditions
Instream Monitoring: Parameters: Benzene and Toluene -
Upstream Site: Just upstream of the plume 6ate-ern,..-pA7 t d' frwqt I/
Downstream Site: At Caldwell St.
**Instream monitoring should be 1/month for five months only.**
-There shall be no discharge of floating solids or visible foam in other than trace amounts.
-Minimum treatment will include an oil/water separator, air stripping or diffused aeration and
activated carbon absorption.
-Design and Construction of the Waste Treatment Facility will emphasize the use of plastic pipes
and fittings where practically possible.
- A reopener clause should be placed in the permit to allow for additional limits on these or other
toxicants should the whole-effluent toxicity testing results indicate toxic effects.
Explain exact pathway of discharge ( i.e. storm sewer to tributary, etc.)
Additional Information attached? (Y or N) If yes,explain with attachments.
ti

acility Name OMNI MART#32 Permit#NC0083810 _Pipe#001
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989)or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is_31_% (defined as treatment two in the North Carolina procedure document). The permit holder shall
perform Quarterly monitoring using this procedure to establish compliance with the permit condition. The first
test will be performed after thirty days from the effective date of this permit during the months of
JAN APR JUL OCT . . Effluent sampling for this testing shall be performed at the NPDES permitted final
effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form(MR-1) for the month in which it was performed,using the parameter code TGP3B.
Additionally,DEM Form AT-1 (original)is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits,then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream,this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 0.05 cfs
Permitted Flow 0.0144 _ MGD ommended by:
IWC 31 % rJ
Basin & Sub-basin (:l'B36
Receiving Stream UT Long Creek
County Gaston Date 1/5/94
QCL P/F Version 9/91