NCG510025_Regional Office Historical File Pre 2018

t
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary
January 29, 1993
Mr. J. Kenneth Seine
Riverside Superette
Route 10, Box 612
Lincolton, NC 28092
Dear Mr. Seine:
�. G DEPT. OF NATURAL
RESOURCES AND
IMMMUNITY DEVELOPMENT
FEB 0 1 1993
1ti MUl AF ENVIAOIIMENTAI 'AHEM R
WORESVILLE RE6lONAL OFFICE
Subject: General Permit NCG510000
Cert. of Coverage NCG510025
Riverside Superette
Lincoln County
In accordance with your application for an NPDES discharge permit received June 4, 1992 by the
Division, we are herewith forwarding the subject Certificate of Coverage under the state-NPDES general
permit for an oil/water separator with free product tank, low profile air stripper and granular activated
carbon filtration and one set of final approved plans and specifications. Authorization is hereby granted
for the construction and operation of a groundwater remediation system with discharge of treated
wastewater into the South Fork of the Catawba River. This Certificate of Coverage is issued pursuant to
the requirements of North Carolina and the US Environmental Protection Agency Memorandum of
Agreement dated December 6, 1983 and as subsequently amended
If any parts, measurement frequencies or sampling requirements contained in this general permit
are unacceptable to you, you have the tight to submit an individual permit application and letter requesting
coverage under an individual permit. Unless such demand is made, this decision shall be final and
binding. Please take notice this permit is not transferable. Part H, E.4. addresses the requirements to be
followed in case of change of ownership or control of this discharge.
The Authorization to Construct is issued in accordance with Part III, Paragraph 2 of NPDES
Permit No. NCG510000, and shall be subject to revocation unless the wastewater treatment facilities are
constructed in accordance with the conditions and limitations specified in Permit No. NCG510000.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilities.
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Permit No. NCG510000
Authorization to Construct
Mr. J. Kenneth Seine
January 29, 1993
Page 2
The Mooresville Regional Office, telephone number 704/663-1699, shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in -place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the NPDES Permit, the Certificate of Coverage, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances which may be required by the Division of Environmental
Management or permits required by the Division of Land Resources, the Coastal Area Management Act or
any Federal or Local other governmental permit that may be required
If you have any questions or need additional information, please contact Charles Alvarez,
telephone number 9191733-5083.
Sincerely,
Original Signed By
Coleen H. Sullins
A. Preston Howard, Jr., P.E.
Acting Director
Division of Environmental Management
cc: Lincoln County Health Department
IVresville .Regional Office, Water Quality
Training and Certification Unit
Facilities Assessment Unit
Cooper Environmental Consulting Engineers
Mooresville Regional Office, Groundwater
Jack Floyd, Groundwater Section, Permits Unit

Permit No. NCG510000
Authorization to Construct
Mr. J. Kenneth Seine
January 29, 1993
Page 3
I, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project, ,
Project Name Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of the approved plans and specifications.
Signature
Date
Registration No.

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
► :: :u Y ►i ► IIIII
�a"Mallmoffigul1
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SRAILIAR WASTEWATERS
UNDER TILE
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,
J. Kenneth Saine
is hereby authorized to construct and operate 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
Riverside Superette
State Road 1224 and NC Highway 27
Lincoln County
to receiving waters designated as South Fork of the Catawba River 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. NCGO0510000 as attached.
This certificate of coverage shall become effective February 1, 1993
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day January 29, 1993
Original Signed By
Coleen H. Sullins
A. Preston Howard, Jr., P.E., Acting Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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To: Permits and Engineering Unit
Water Quality Section
Date: July 9, 1992
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Lincoln
Permit No.: NCO082414
MRO No.: 92-115
PART I - GENERAL INFORMATION
1. Facility and Address: Riverside Superette
Route 10, Box 612
Lincolnton, North Carolina 28092
2. Date of Investigation: July 8, 1992
3. Report Prepared by: W. Allen Hardy, Environmental Engineer I
4. Persons Contacted and Telephone Number: No one on site
5. Directions to Site: From Lincolnton travel west on Highway
150 (SR 1407) to the intersection with Highway 27. The site
is at the northwest corner of this intersection.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 27' 47"
Longitude: 810 16' 03"
Attach a USGS map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: F13NE USGS Quad Name: Lincolnton West, N.C.
7. Size (land available for expansion and upgrading): There
appeared to be adequate land available for expansion and
upgrading.
8. Topography (relationship to flood plain included): The
topography is relatively flat. The site is not in or near the
flood plain.
9. Location of nearest dwelling: The nearest dwelling is
approximately 200 feet from the site.

y
4
Page Two
10. Receiving stream or affected surface waters: South Fork
Catawba River
a. Classification: WS-III
b. River Basin and Subbasin No.: Catawba 030835
C. Describe receiving stream features and pertinent
downstream uses: The receiving stream is the South Fork
Catawba River which contains a good flow at all times.
The pertinent downstream uses are those typical of Class
C streams, however, several cities are using this stream
as a water supply.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 0% Domestic
100% Industrial
a. Volume of Wastewater: 0.072 MGD (Design Capacity)
b. Types and quantities of industrial wastewater: The
industrial wastewater is produced from the remediation of
unleaded gasoline and kerosene.
C. Prevalent toxic constituents in wastewater: Those
expected from gasoline and kerosene.
d. Pretreatment Program (POTWs only): N/A
in development
should be required
approved _
not needed
2. Production rates (industrial discharges only) in pounds per
day: N/A
a. Highest month in past 12 months: lbs/day
b. Highest year in the past 5 years: lbs/day
3. Description of industrial process (for industries only) and
applicable CFR Part and Subpart: N/A
4. Type of treatment (specify whether proposed or existing): The
proposed treatment consists of an oil/water separator, Breeze
Aeration System, holding tank/settling tank and an activated
carbon system.
5. Sludge handling and disposal scheme: N/A
6. Treatment plant classification (attach completed rating
sheet): N/A

Page Three
7. SIC Code(s): N/A
Wastewater Code(s):
Primary: 66
Secondary:
Main Treatment Unit Code: 56000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds (municipals only)? No
2. Special monitoring requests: None
3. Additional effluent limits requests: None
4. Air Quality and/or Groundwater concerns or hazardous
materials utilized at this facility that may impact water
quality, air quality or groundwater? No air or groundwater
quality concerns are expected from the discharge. Gasoline
and kerosene will be stored on -site in a 1,000 gallon tank and
and removed as needed.
5. Other: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
The applicant, Riverside Superette, has applied for a permit
to discharge treated industrial wastewater produced from the
remediation of gasoline and kerosene contaminated groundwater. An
on -site inspection did not reveal any site specific problems that
appear to hinder the issuance of the permit.
Pending the review by the Permits and Engineering Unit and
approval of the waste load allocation, it is recommended that the
permit be issued.
W. A p7
Signature of Repor eparer
-D, 2
Water Quality R ional Supervisor
?// Z_
Date

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A. C. DEPT. OF NATUk"
RESOURCES AND
v Qp AIUNITY DEVELOPMENT $
JUN 2 2 1992 State of North Carolina
V.r➢ Department of Environment, Health, and Natural Resources
L^t GE ENYiRORMEniRt IrANA6EMV Division of Environmental Management
j ESSVItiE RL111OUL OFFICE
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Governor
William W. Cobey, Jr., Secretary
June 18, 1992
George T. Everett, Ph.D.
Director
J. Kenneth Saine Subject: NPDES Permit Application
Rt . 10, Box 612 NPDES Permit No . NC0082414
Lincolnton, NC 28092 Riverside Superette
Dear Mr. Saine : Lincoln County
This is to acknowledge receipt of the following documents on June 18, 1992:
Application Form
Engineering Proposal (for proposed control facilities),
Request for permit renewal,
Application Processing Fee of $400.00,
Engineering Economics Alternatives Analysis,
Local Government Signoff,
Source Reduction and Recycling,
Interbasin Transfer,
Other ,
The items checked below are needed before review can begin:
Application Form ,
Engineering proposal (see attachment),
Application Processing Fee of
Delegation of Authority (see attached)
Biocide Sheet (see attached)
Engineering Economics Alternatives Analysis,
Local Government Signoff,
Source Reduction and Recycling,
Interbasin Transfer,
Other
Asheville Fayetteville
704251-6208 919/486-1541
REGIONAL OFFICES
Mooresville Raleigh Washington Wilmington Winston-Salem
704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

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P P, 1�
If the application is not made complete within thirty (30) days, it will be
returned to you and may be resubmitted when complete.
This application has been assigned to Mack Wiggins
(919/733-5083) of our Permits Unit for review. You wiii be advised ot any
comments recommendations, questions or other information necessary for the
review of the application.
I am, by copy of this letter, retluesting that our Regional Office
Supervisor prepare a staff report and recommendations regarding this
discharge. If you have any questions regarding this applications,
please contact the review person listed above.
Sincerely,
Donald L. afrit, P.E.
CC: Mooresville Regional Office

(�'mil'
W`,'
Zk,
PL G DEPT. OF NATUM
RESOURCES AND
COMMUNITY DEVELOPMENT
PETROLEUM ENVIRONMENTAL CONSULTANTS, INCORPORATED JUN 1 9 1992
P.O. BOX 26413 CHARLOTTE, N.C. 28221
Director
North Carolina Department
of Environment, Health,
and Natural Resources
Division of Environmental
P.O. Box 27687
Raleigh, NC 27611
704-335-8801 FAX: [phone]
Management
Re: National Pollutant Discharge Elimination
System, Application for Permit Discharge
Short Form C-GW
Riverside Superette
Highway 27 West
Lincolnton, NC 28092
Dear Sir:
W10R or �YrfiG.��;;ll $AZE�
YC�B,�SU
PaA(9194%,
JUN 2 1992
DIV. OF ENVIRONMENTAL MGMNT.
DIRECTOR'S OFFICE
Petroleum Environmental Consultants, Inc. (PEC) has been requested by
Messrs. Saine and Cline to prepare and submit the enclosed National Pollutant
Discharge Elimination System (NPDES) Application for Permit Discharge, Short Form
C-GW regarding the former Riverside Superette gasoline service station
(Groundwater Incident #4045).
The enclosed permit application is pursuant to the restoration of the site
shallow unconfined aquifer which has been contaminated by a release of petroleum
products from underground storage tanks formerly used at the subject site. The
proposed means of aquifer restoration will utilize conventional pump -and -treat
technologies in concert with air sparging and soil vapor extraction. Specific
details of the groundwater treatment system are enclosed.
If you require additional information concerning this application, please
contact this office.
Sincerely,
PETROLEUM ENVIRONMENTAL CONSULTANTS, INC.
( • -• p°,',r�ri
Tegwyn Williams -o m M
Staff Geologist 'r �•G
J
enclosure: National Pollutant Discharge Elimination System, Application fore
Permit Discharge, Short Form C-GW

National Pollutant Discharge Elimination System
Application for Permit Discharge
Short Form C-GW
Prepared For:
Mr. Ken Saine & Mr. Gerry Cline
Riverside Superette
Lincolnton, North Carolina 28092
Prepared by:
Petroleum Environmental Consultants, Inc.
Charlotte, NC
May 29, 1992

In accordance with 15A NCAC 2H .0105 paragraph c):
1. The proposed discharge is a result of the on -going restoration of the site
aquifer which was impacted following a release of petroleum products from on -site
underground storage tanks (USTs). The USTs had been used to store unleaded
gasoline and kerosene for retail purposes. The effluent will contain dissolved -
phase gasoline -related petroleum hydrocarbons PEC estimates the daily effluent
flow rate to be 72,000 gallons per day.
2. Summary of Remedial Feasibility Studv
Bioremediation
Bioremediation was selected as a potential remedial alternative for this
site due to the closed-circuit nature of the system, i.e. there would be no
effluent discharge from the site. The system would have recovered contaminated
groundwater from wells and drains to a bioreactor. The bioreactor would have
provided a suitable environment for the accelerated growth of indigenous
microbial species which would then be carried back into the site soils and
groundwater via infiltration galleries.
A preliminary site biofeasibility study established that indigenous
microorganisms were present within both soil and groundwater samples collected
within the study area and that the species in both matrices were acclimated to
the site contaminants. The study noted that biodegradation of the petroleum
contaminants would be greatly enhanced through the addition of nutrients,
oxygenation and pH buffering. Bioremediation of both the vadose and saturated
zones in the source areas required that the treated effluent from the bioreactor
be discharged into infiltration galleries located within the zone of capture
effected by extraction wells or subsurface drains. For this reason, an
infiltration test was conducted to estimate site -specific infiltration rates.
A double -ring infiltrometer was employed to measure the vertical movement of
water under a constant head through the shallow soils. Test parameters were
calculated to give an average infiltration rate of 0.065 feet/day. Based on the
low infiltration capacity of the shallow soils, the design of an infiltration
gallery which could effectively return treated effluent and nutrients to the
subsurface at the anticipated groundwater extraction rates was not practical.
The re -introduction of the treated effluent to the subsurface is a crucial
element of enhanced bioremediation. Without effluent recharge the system would
in effect become a pump -and -treat operation addressing only the saturated zone.
Spray Irrigation
Spray irrigation is an effective means of treating groundwater contaminated
by volatile organic constituents such as benzene, toluene, ethyl benzene and
xylene. However, the process generally requires a substantial area of land on
which to construct and operate the system. A series of atomizer nozzles are
attached to parallel headers across the treatment site. Contaminated groundwater
is then pumped into the header system and sprayed into the air where the volatile
organic compounds are effectively stripped, and released into the atmosphere. The
water which falls back to earth is either captured by an impermeable surface and
discharged from the site via a storm drain, or allowed to infiltrate into the

site soils possibly flushing vadose zone contaminants into the saturated zone to
be captured by the groundwater recovery system.
The space constraints, the proximity of residential dwellings and the
possible health risks posed by the air emissions effectively precluded this
remedial option from use at this site.
3. Proposed Treatment System
Pump -and -Treat with Air Sparxinz and Soil Vapor Extraction
Based upon data acquired from in -situ hydrogeologic testing and computer -
aided modeling, a system of wells and drains were proposed to recover and contain
the migration of the contaminant plume. The proposed system would recover
approximately 72,000 gallons per day to a central treatment system. The influent
contaminant concentrations to the treatment system are not expected to exceed the
values listed in Table 1.
Table 1. Site Groundwater Contaminants
Constituent
Maximum Reported
Concentrations, ug/L
Removal
Efficiency
Benzene
9000
99.5
Toluene
18000
99.5
Ethylbenzene
2300
99.5
Xylene (o, m and p)
12000
99.5
1,2-dibromoethane (EDB)
3.8
n/a
Methyl tertiary butyl ether (MTBE)
1300
65
Isopropyl ether (IPE)
600
n/a
2,4-dimethylphenol
36
n/a
Naphthalene
450
65
1,2-dichloroethane (1,2-DCA)
2.1
n/a
1,1,1-trichloroethane (1,1,1-TCA)
3.6
n/a
Chloroform
0.9
n/a
Much lower concentrations are anticipated as a result of the dilution of influent
by pumping from wells and drains at the periphery of the contaminant plume.

PP-PPPP,
The proposed system would utilize a treatment train consisting of:
Oil/Water Separator. The separator will remove free -phase petroleum and
suspended solids from the influent. The estimated influent rate to the
separator is 50 gallons per minute (gpm). Free -phase product recovered by
the separator will be accumulated in an above -ground storage tank. The
separator will also provide.a constant flow to the aeration system.
Air stripping is a proven and effective technique for removing gasoline -
related volatile organic compounds from groundwater. The process provides
contact between air and water to allow the volatile contaminants to diffuse from
an area of high constituent concentration in the liquid phase to an area of low
constituent concentration in the gaseous phase. The contaminant -loaded gaseous
phase is continuously removed from the system providing the necessary
concentration gradient to promote diffusion. Air stripping has generally been
found to be the most cost-effective option for the treatment of groundwater
contaminated by gasoline and other low boiling -point petroleum distillates.
Of the various air stripping techniques which are in general use, diffused
aeration offers the greatest reduction in contaminant concentrations for
gasoline -related groundwater contaminants. A diffused aeration system injects
air under pressure into a baffled holding tank through a diffuser or sparging
device which produces fine bubbles. Mass transfer occurs across the air -water
interface of the bubbles until they leave the water or become saturated with
contaminant. Mass transfer rates may be increased by the use of smaller bubbles,
increasing the air -water ratio, improving the basin geometry or using a turbine
to. increase turbulence.
Breeze" Aeration System. The Aeromix Breeze" units were chosen for
several reasons:
1) Compact size, the larger of the two units measures only eleven feet
long by three feet wide by three feet high. A packed stripping tower which
provides similar contaminant removal efficiencies at an operating flow
rate of 50 gpm would be approximately thirty (30) feet tall and would
require substantial engineering support.
2) Competitive pricing.
3) Low operational and maintenance costs when compared to tower stripping
or peroxidation.
4) Lease options would allow the removal of one of the units as the clean-
up progresses and influent concentrations decrease thus requiring less
treatment to comply with the permit requirements.
Two (2) aeration units (one Series 4 (4.1-3) and one Series 12 (12.2-5))
will be used in series to effect the desired contaminant reduction levels.
Recovered groundwater will be pumped from the separator into the Series 4
Breeze" unit (this unit will be raised approximately two (2) feet above
the second unit) where it will be treated and flow under gravity into the
Series 12 Breeze" unit and undergo a second phase of treatment. The
treated groundwater will then be pumped into a second holding
tank/settlement tank to facilitate the removal of suspended solids or
precipitates which may have formed during the forced aeration process.
Contaminant removal efficiencies for the two aeration units are estimated
to be 99.5% for the BTEX compounds and approximately 65% for MTBE and
naphthalene. Current NCDEM air quality regulations require that the air

emissions from the treatment system be registered with the Mooresville
Regional Office (MRO). However, although permitting is not required for
this type of emission, it is possible that additional information or
treatment may be requested by the MRO.
Holding Tank/Settlement Tank. A 1,000-gallon holding tank/settlement tank
will be incorporated following the aeration systems and prior to the
carbon adsorption system. This tank will be utilized to remove
particulate matter from the process water which may be formed following
the oxidation of dissolved minerals. The tank may also be utilized,
should site conditions warrant, to remove iron or manganese from the
process to prevent damage to the carbon system.
Granular Activated Carbon (GAC). A final 'polishing' treatment phase
will be provided by a GAC system in order to meet the effluent standards
for toluene and benzene (11 ug/L and 71.4 ug/L, respectively). Treated
groundwater will be pumped into the GAC system under pressure from the
second holding/settlement tank. The estimated break -through time is three
(3) to six (6) months at 50 gpm, which will result in a carbon usage rate
of approximately 8.3 to 16.7 lbs/day. Effluent from the GAC system will
be discharged by gravity into an on -site storm drain under an NPDES
permit.
Soil Vapor Extraction (SVE). The remedial approach commonly referred to
as "soil vapor extraction" utilizes a vacuum pump connected to shallow
extraction wells through which contaminants are stripped out of the soils
by the vacuum -induced movement of fresh air through the contaminated soil
zone and the subsequent removal of the contaminant -rich air through the
extraction well network. SVE has been successfully employed at many
remedial sites to remove volatile contaminants from Piedmont -type soils.
Conceptually, SVE appears to be the most feasible remedial alternative to
rapidly and effectively reduce or remove residual petroleum from the
vadose (unsaturated) and shallow saturated on -site soils. In addition to
enhancing volatilization, SVE has also been shown to enhance in situ
biodegradation via intake of oxygen and extraction of carbon dioxide.
Gasoline constituents possessing quantitative volatile characteristics
such as moderate to high vapor pressures, and high Henry's Law constants
are susceptible to vacuum extraction. The Henry's Law constant is
conventionally expressed as a ratio of partial pressure of the vapor to
the concentration in the liquid (Mackay and Shiu, 1981). Hence, this
parameter reflects the air -water partitioning potential for a specific
compound, and thereby provides a means of determining the phase in which
a compound is likely found under given atmospheric and temperature
conditions. Typical values for these physico-chemical properties of the
predominant hydrocarbon constituents found in the site soils and
groundwater are given in Table 1. Generally, compounds having a Henry's
Law constant of less than 0.1 are considered to be difficult to volatilize
from a liquid phase. With the exception of MTBE and napthalene, all other
site=specific constituents should readily partition into a vapor phase via
SVE treatment. Even though MTBE exhibits a high vapor pressure it also
possesses a high aqueous solubility. Consequently, MTBE may be readily

Table 2. Partitioning properties of selected volatile organic compounds.
(NWWA, 1987)
Material
Vapor
Henry's Law
Solubility
Pressure
Coeff.
g/m'
mm HP
Atm.m3/mol
Benzene
12.7
0.550+0.025
1780
Ethyl
benzene
1.27
0.80+0.07
167
Toluene
1.27
0.670+0.035
536.7
p-Xylene
1.17
0.710±0.08
179.2
m-Xylene
1.10
0.700±0.10
162.2
o-Xylene
0.882
0.50±0.06
185.9
MTBE
245
0.0082
48000
Napthalene
1.09x10''
0.0430+0.004
30.6
recovered from the vadose zone where soil moisture levels are low;
however, once this compound is dissolved by subsurface water, its high
solubility and very low Henry's Law constant (0.0082) make the compound
less amenable to vacuum recovery. Supplemental on -site groundwater
extraction should assist in reducing dissolved MTBE levels. Napthalene
levels should be reduced as a result of natural microbial degradation
(enhanced by the addition of oxygen and extraction of carbon dioxide via
SVE and air sparging). In addition, naphthalene possesses a low water
solubility and is not found in significant levels in the dissolved phase.
Based on previous experience in similar fine-grained Piedmont soil types,
a high suction vacuum pump would be capable of applying a negative
pressure which will effect a pressure drop within the shallow soils. A
pilot -scale SVE site study would be required to gather site -specific
design criteria for full-scale operation of the system, such as system
vacuum pressure, air flow rate, optimal horizontal and vertical extraction
well spacing, and quantitative constituent emission levels.
It is recognized that the heterogenous nature of the shallow soils will
affect cleanup rates. Constituent levels in more permeable soils will be
reduced at an accelerated rate; whereas, contaminants in the low -permeable
soils will have to diffuse into the high -permeable materials at much
slower rates before being effectively reduced. SVE remediation is most
effective when air flow throughout the soils is never allowed to achieve
equilibrium conditions. Thus, the operational design of the system will
allow extraction wells to be converted to passive vent wells such that air
flow patterns may be varied throughout the remediation period. The time
required to reduce the residual hydrocarbon concentrations to acceptable
levels cannot be accurately predicted, but is anticipated to be achieved
within at least two years following start-up of the proposed SVE system.

Air Sparging (AS). Air sparging methods were proposed to treat the
dissolved phase groundwater plume on -site and, more importantly, treat the
capillary fringe area in the vicinity of the sources where residual
petroleum contamination will continue to degrade the local groundwater.
In effect, air sparging creates an in situ air -stripper in the aquifer
through the installation of air injection wells. Injection wells are
screened within and beneath the contaminated groundwater zone. As air is
injected under pressure, air bubbles rise through the aquifer and
dissolved volatile hydrocarbons are stripped out of the water and are
desorbed from the aquifer matrix. The vapor phase contaminants are
transported to the vadose zone within the radius of influence of a SVE
well system. A properly sized blower can provide the necessary pressure
to maintain an adequate air flow into the shallow aquifer. The blower
creates convection currents which circulate the water, thus extending the
radius of influence beyond the area immediately surrounding the well.
Such a blower also produces heated air which enhances volatilization.
Additionally, biodegradation should be enhanced by oxygenation and
extraction of carbon dioxide.
The proposed air sparging system will be teamed with the SVE system to
collect the displaced vapor phase constituents. The air injection wells
will be located within the radius of influence of the SVE well system.
SVE extraction rates will be greater than the air injection rates. Air
sparging and SVE extraction well radii of influence are predicted and may
vary depending on blower and vacuum pump capacity and actual site
conditions. The blower would be housed with the SVE vacuum pump unit
under shelter. Access would be limited to authorized maintenance, repair
and monitoring. All air sparging system piping (Schedule 80 PVC) would be
placed in shallow trenches and covered since the site is actively used for
retail operation.
The combined effect of the soil vapor extraction and the air sparging
systems should result in a decreased contaminant loading to the
groundwater treatment system.
The location and orientation of the facility and the point of discharge are
shown by Figure 1.
Previous assessment of the subject site (Groundwater Incident #4045) has
been financed in part by the North Carolina Commercial Underground Storage Tank
Trust Fund. Under the terms of the Fund all reasonable and necessary assessment
and remedial actions are eligible for reimbursement up to a maximum of
$1,000,000. The applicant has not previously engaged in the process of waste
management treatment and is believed to be in substantial compliance with other
federal and state laws, regulations, and rules for the protection of the
environment.

N rOV4 a-" J
l7Pv
VU
t
c A
1
PETROLEUM ENVIRONMENTAL CONSULTANTS, INCORPORATED
P.O. BOX 26413 CHARLOTTE, N.C. 28221
704-335-8801 FAX: 704-34Wl DEPT. OF NATURAL
Director RESOURCES AND May 29, 1992
North Carolina Department COMMUNITY DEVELOPMENT V
��
of Environment, Health,
and Natural Resources JUN 1 0 1992 t�
Division of Environmental Management D
P.O. Box 27687 DIVISION OF ENVIRONMEPiTAL MANAGEME41 JUN 2 1992
Raleigh, NC 27611 MOORESVILLE REGIONAL OFFICE
DIV. OF ENVIRONMENTAL MGMNT.
Re: National Pollutant Discharge Elimination DIRECTOR'S OFFICE
System, Application for Permit Discharge
Short Form C-GW
Riverside Superette
Highway 27 West
Lincolnton, NC 28092
Dear Sir:
Petroleum Environmental Consultants, Inc. (PEC) has been requested by
Messrs. Saine and Cline to prepare and submit the enclosed National Pollutant
Discharge Elimination System (NPDES) Application for Permit Discharge, Short Form
C-GW regarding the former Riverside Superette gasoline service station
(Groundwater Incident #4045).
The enclosed permit application is pursuant to the restoration of the site
shallow unconfined aquifer which has been contaminated by a release of petroleum
products from underground storage tanks formerly used at the subject site. The
proposed means of aquifer restoration will utilize conventional pump -and -treat
technologies in concert with air sparging and soil vapor extraction. Specific
details of the groundwater treatment system are enclosed.
If you require additional information concerning this application, please
contact this office.
Sincerely,
PETROLEUM ENVIRONMENTAL CONSULTANTS, INC.
Tegwyn Williams c-- C3
c'_ rrs
Staff Geologist
enclosure: National Pollutant Discharge Elimination System, Application for~Dr
1"M
,, ru <
Permit Discharge, Short Form C-GW -v c-) 3rn
� c�

National Pollutant Discharge Elimination System
Application for Permit Discharge
Short Form C-GW
Prepared For:
Mr. Ken Saine & Mr. Gerry Cline
Riverside Superette
Lincolnton, North Carolina 28092
Prepared by:
Petroleum Environmental Consultants, Inc.
Charlotte, NC
May 29, 1992

In accordance with 15A NCAC 2H .0105 paragraph c):
1. The proposed discharge is a result of the on -going restoration of the site
aquifer which was impacted following a release of petroleum products from on -site
underground storage tanks (USTs). The USTs had been used to store unleaded
gasoline and kerosene for retail purposes. The effluent will contain dissolved -
phase gasoline -related petroleum hydrocarbons PEC estimates the daily effluent
flow rate to be 72,000 gallons per day.
2. Summary of Remedial Feasibility Study
Bioremediation
Bioremediation was selected as a potential remedial alternative for this
site due to the closed-circuit nature of the system, i.e. there would be no
effluent discharge from the site. The system would have recovered contaminated
groundwater from wells and drains to a bioreactor. The bioreactor would have
provided a suitable environment for the accelerated growth of indigenous
microbial species which would then be carried back into the site soils and
groundwater via infiltration galleries.
A preliminary site biofeasibility study established that indigenous
microorganisms were present within both soil and groundwater samples collected
within the study area and that the species in both matrices were acclimated to
the site contaminants. The study noted that biodegradation of the petroleum
contaminants would be greatly enhanced through the addition of nutrients,
oxygenation and pH buffering. Bioremediation of both the vadose and saturated
zones in the source areas required that the treated effluent from the bioreactor
be discharged into infiltration galleries located within the zone of capture
effected by extraction wells or subsurface drains. For this reason, an
infiltration test was conducted to estimate site -specific infiltration rates.
A double -ring infiltrometer was employed to measure the vertical movement of
water under a constant head through the shallow soils. Test parameters were
calculated to give an average infiltration rate of 0.065 feet/day. Based on the
low infiltration capacity of the shallow soils, the design of an infiltration
gallery which could effectively return treated effluent and nutrients to the
subsurface at the anticipated groundwater extraction rates was not practical.
The re -introduction of the treated effluent to the subsurface is a crucial
element of enhanced bioremediation. Without effluent recharge the system would
in effect become a pump -and -treat operation addressing only the saturated zone.
Spray Irrigation
Spray irrigation is an effective means of treating groundwater contaminated
by volatile organic constituents such as benzene, toluene, ethyl benzene and
xylene. However, the process generally requires a substantial area of land on
which to construct and operate the system. A series of atomizer nozzles are
attached to parallel headers across the treatment site. Contaminated groundwater
is then pumped into the header system and sprayed into the air where the volatile
organic compounds are effectively stripped and released into the atmosphere. The
water which falls back to earth is either captured by an impermeable surface and
discharged from the site via a storm drain, or allowed to infiltrate into the

site soils possibly flushing vadose zone contaminants into the saturated zone to
be captured by the groundwater recovery system.
The space constraints, the proximity of residential dwellings and the
possible health risks posed by the air emissions effectively precluded this
remedial option from use at this site.
3. Proposed Treatment System
Pump -and -Treat with Air Snarging and Soil Vapor Extraction
Based upon data acquired from in -situ hydrogeologic testing and computer -
aided modeling, a system of wells and drains were proposed to recover and contain
the migration of the contaminant plume. The proposed system would recover
approximately 72,000 gallons per day to a central treatment system. The influent
contaminant concentrations to the treatment system are not expected to exceed the
values listed in Table 1.
Table 1. Site Groundwater Contaminants
Constituent
Maximum Reported
Concentrations, ug/L
Removal
Efficiency %
Benzene
9000
99.5
Toluene
18000
99.5
Ethylbenzene
2300
99.5
Xylene (o, m and p)
12000
99.5
1,2-dibromoethane (EDB)
3.8
n/a
Methyl tertiary butyl ether (MTBE)
1300
65
Isopropyl ether (IPE)
600
n/a
2,4-dimethylphenol
36
n/a
Naphthalene
450
65
1,2-dichloroethane (1,2-DCA)
2.1
n/a
1,1,1-trichloroethane (1,1,1-TCA)
3.6
n/a
Chloroform
0.9
n/a
Much lower concentrations are anticipated as a result of the dilution of influent
by pumping from wells and drains at the periphery of the contaminant plume.

The proposed system would utilize a treatment train consisting of:
Oil/Water Separator. The separator will remove free -phase petroleum and
suspended solids from the influent. The estimated influent rate to the
separator is 50 gallons per minute (gpm). Free -phase product recovered by
the separator will be accumulated in an above -ground storage tank. The
separator will also provide a constant flow to the aeration system.
Air stripping is a proven and effective technique for removing gasoline -
related volatile organic compounds f rom groundwater. The process provides
contact between air and water to allow the volatile contaminants to diffuse from
an area of high constituent concentration in the liquid phase to an area of low
constituent concentration in the gaseous phase. The contaminant -loaded gaseous
phase is continuously removed from the system providing the necessary
concentration gradient to promote diffusion. Air stripping has generally been
found to be the most cost-effective option for the treatment of groundwater
contaminated by gasoline and other low boiling -point petroleum distillates.
Of the various air stripping techniques which are in general use, diffused
aeration offers the greatest reduction in contaminant concentrations for
gasoline -related groundwater contaminants. A diffused aeration system injects
air under pressure into a baffled holding tank through a diffuser or sparging
device which produces fine bubbles. Mass transfer occurs across the air -water
interface of the bubbles until they leave the water or become saturated with
contaminant. Mass transfer rates may be increased by the use of smaller bubbles,
increasing the air -water ratio, improving the basin geometry or using a turbine
to increase turbulence.
Breeze" Aeration System. The Aeromix Breeze" units were chosen for
several reasons:
1) Compact size, the larger of the two units measures only eleven feet
long by three feet wide by three feet high. A packed stripping tower which
provides similar contaminant removal efficiencies at an operating flow
rate of 50 gpm would be approximately thirty (30) feet tall and would
require substantial engineering support.
2) Competitive pricing.
3) Low operational and maintenance costs when compared to tower stripping
or peroxidation.
4) Lease options would allow the removal of one of the units as the clean-
up progresses and influent concentrations decrease thus requiring less
treatment to comply with the permit requirements.
Two (2) aeration units (one Series 4 (4.1-3) and one Series 12 (12.2-5))
will be used in series to effect the desired contaminant reduction levels.
Recovered groundwater will be pumped from the separator into the Series 4
Breeze" unit (this unit will be raised approximately two (2) feet above
the second unit) where it will be treated and flow under gravity into the
Series 12 Breeze" unit and undergo a second phase of treatment. The
treated groundwater will then be pumped into a second holding
tank/settlement tank to facilitate the removal of suspended solids or
precipitates which may have formed during the forced aeration process.
Contaminant removal efficiencies for the two aeration units are estimated
to be 99.5% for the BTEX compounds and approximately 65% for MTBE and
naphthalene. Current NCDEM air quality regulations require that the air

emissions from the treatment system be registered with the Mooresville
Regional Office (MRO). However, although permitting is not required for
this type of emission, it is possible that additional information or
treatment may be requested by the MRO.
Holding Tank/Settlement Tank. A 1,000-gallon holding tank/settlement tank
will be incorporated following the aeration systems and prior to the
carbon adsorption system. This tank will be utilized to remove
particulate matter from the process water which may be formed following
the oxidation of dissolved minerals. The tank may also be utilized,
should site conditions warrant, to remove iron or manganese from the
process to prevent damage to the carbon system.
Granular Activated Carbon (GAC). A final 'polishing' treatment phase
will be provided by a GAC system in order to meet the effluent standards
for toluene and benzene (11 ug/L and 71.4 ug/L, respectively). Treated
groundwater will be pumped into the GAC system under pressure from the
second holding/settlement tank. The estimated break -through time is three
(3) to six (6) months at 50 gpm, which will result in a carbon usage rate
of approximately 8.3 to 16.7 lbs/day. Effluent from the GAC system will
be discharged by gravity into an on -site storm drain under an NPDES
permit.
Soil Vapor Extraction (SVE). The remedial approach commonly referred to
as "soil vapor extraction" utilizes a vacuum pump connected to shallow
extraction wells through which contaminants are stripped out of the soils
by the vacuum -induced movement of fresh air through the contaminated soil
zone and the subsequent removal of the contaminant -rich air through the
extraction well network. SVE has been successfully employed at many
remedial sites to remove volatile contaminants from Piedmont -type soils.
Conceptually, SVE appears to be the most feasible remedial alternative to
rapidly and effectively reduce or remove residual petroleum from the
vadose (unsaturated) and shallow saturated on -site soils. In addition to
enhancing volatilization, SVE has also been shown to enhance in situ
biodegradation via intake of oxygen and extraction of carbon dioxide.
Gasoline constituents possessing quantitative volatile characteristics
such as moderate to high vapor pressures, and high Henry's Law constants
are susceptible to vacuum extraction. The Henry's Law constant is
conventionally expressed as a ratio of partial pressure of the vapor to
the concentration in the liquid (Mackay and Shiu, 1981). Hence, this
parameter reflects the air -water partitioning potential for a specific
compound, and thereby provides a means of determining the phase in which
a compound is likely found under given atmospheric and temperature
conditions. Typical values for these physico-chemical properties of the
predominant hydrocarbon constituents found in the site soils and
groundwater are given in Table 1. Generally, compounds having a Henry's
Law constant of less than 0.1 are considered to be difficult to volatilize
from a liquid phase. With the exception of MTBE and napthalene, all other
site -specific constituents should readily partition into a vapor phase via
SVE treatment. Even though MTBE exhibits a high vapor pressure it also
possesses a high aqueous solubility. Consequently, MTBE may be readily

Table 2. Partitioning properties of selected volatile organic compounds.
(NWWA, 1987)
Material
Vapor
Henry's Law
Solubility
Pressure
Coeff.
g/m'
mm He
Atm.m'/mol
Benzene
12.7
0.550+0.025
1780
Ethyl
-benzene
1.27
0.80+0.07
167
Toluene
1.27
0.670±0.035
536.7
p-Xylene
1.17
0.710±0.08
179.2
m-Xylene
1.10
0.700±0.10
162.2
o-Xylene
0.882
0.50±0.06
185.9
MTBE
245
0.0082
48000
Napthalene
1.09xlO"
0.0430±0.004
30.6
recovered from the vadose zone where soil moisture levels are low;
however, once this compound is dissolved by subsurface water, its high
solubility and very low Henry's Law constant (0.0082) make the compound
less amenable to vacuum recovery. Supplemental on -site groundwater
extraction should assist in reducing dissolved MTBE levels. Napthalene
levels should be reduced as a result of natural microbial degradation
(enhanced by the addition of oxygen and extraction of carbon dioxide via
SVE and air sparging). In addition, naphthalene possesses a low water
solubility and is not found in significant levels in the dissolved phase.
Based on previous experience in similar fine-grained Piedmont soil types,
a high suction vacuum pump would be capable of applying a negative
pressure which will effect a pressure drop within the shallow soils. A
pilot -scale SVE site study would be required to gather site -specific
design criteria for full-scale operation of the system, such as system
vacuum pressure, air flow rate, optimal horizontal and vertical extraction
well spacing, and quantitative constituent emission levels.
It is recognized that the heterogenous nature of the shallow soils will
affect cleanup rates. Constituent levels in more permeable soils will be
reduced at an accelerated rate; whereas, contaminants in the low -permeable
soils will have to diffuse into the high -permeable materials at much
slower rates before being effectively reduced. SVE remediation is most
effective when air flow throughout the soils is never allowed to achieve
equilibrium conditions. Thus, the operational design of the system will
allow extraction wells to be converted to passive vent wells such that air
flow patterns may be varied throughout the remediation period. The time
required to reduce the residual hydrocarbon concentrations to acceptable
levels cannot be accurately predicted, but is anticipated to be achieved
within at least two years following start-up of the proposed SVE system.

Air Sparging (AS). Air sparging methods were proposed to treat the
dissolved phase groundwater plume on -site and, more importantly, treat the
capillary fringe area in the vicinity of the sources where residual
petroleum contamination will continue to degrade the local groundwater.
In effect, air sparging creates an in situ air -stripper in the aquifer
through the installation of air injection wells. Injection wells are
screened within and beneath the contaminated groundwater zone. As air is
injected under pressure, air bubbles rise through the aquifer and
dissolved volatile hydrocarbons are stripped out of the water and are
desorbed from the aquifer matrix. The vapor phase contaminants are
transported to the vadose zone within the radius of influence of a SVE
well system. A properly sized blower can provide the necessary pressure
to maintain an adequate air flow into the shallow aquifer. The blower
creates convection currents which circulate the water, thus extending the
radius of influence beyond the area immediately surrounding the well.
Such a blower also produces heated air which enhances volatilization.
Additionally, biodegradation should be enhanced by oxygenation and
extraction of carbon dioxide.
The proposed air sparging system will be teamed with the SVE system to
collect the displaced vapor phase constituents. The air injection wells
will be located within the radius of influence of the SVE well system.
SVE extraction rates will be greater than the air injection rates. Air
sparging and SVE extraction well radii of influence are predicted and may
vary depending on blower and vacuum pump capacity and actual site
conditions. The blower would be housed with the SVE vacuum pump unit
under shelter. Access would be limited to authorized maintenance, repair
and monitoring. All air sparging system piping (Schedule 80 PVC) would be
placed in shallow trenches and covered since the site is actively used for
retail operation.
The combined effect of the soil vapor extraction and the air sparging
systems should result in a decreased contaminant loading to the
groundwater treatment system.
The location and orientation of the facility and the point of discharge are
shown by Figure 1.
Previous assessment of the subject site (Groundwater Incident #4045) has
been financed in part by the North Carolina Commercial Underground Storage Tank
Trust Fund. Under the terms of the Fund all reasonable and necessary assessment
and remedial actions are eligible for reimbursement up to a maximum of
$1,000,000. The applicant has not previously engaged in the process of waste
management treatment and is believed to be in substantial compliance with other
federal and state laws, regulations, and rules for the protection of the
environment.

TRBTM=NT PLANT
STORI
DISCHARGE
POINT
0 10.)
(Feet)
FIGURE 1. RIVERSIDE SUPERET--E
LOCATION OF PROPOSED TREATMENT PLANT
AND DISCHARGE POINT

North Carolina Dept. of Environment, Health, and Natural Resources
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 N g- I z i I �-
Date Received
To be filed by persons engaged in groundwater I/ III g�Z o 1 � c, I U
remediation projects. year nonin Day
(DEM USE ONLY)
Do not attempt to complete this form before reading accompanying instructions.
(Please print or type) CK.
1 . Name, address, location, and telephone number of facility producing discharge
A.Name Riverside Superette
B. Mailing address
1. Street address Route 10, Box 612
2. City Lincolnton 3. State North Carolina
4. ZIP 28092
C. Location:
1. Street Corner of Spake Rd. (SR 1294) & Highway 97 West
2. City Lincolnton 3.State North Carolina
4. County Lincoln
D. Telephone No. (7-Q-4-)- 715-8058
E. Nature of business Former Qasol ine/servi re ctati nn
2. Facility contact
A.Name Tegwyn Williams N
B. Title Staff Geologist _ C. Telephone No. (704) - 335-RRO1 c`y
3. The application is for K] a new permit, ❑permit renewal, []permit modification.
SIC ® (if known). If application is for renewal or modification, please indicate permit
number: NC00
4. Product(s) recovered Unleaded gasoline and kerosene
[Diesel fuel, leaded or unleaded fuel, solvents, etc.]
This application must also include the following:
j.�
pr
G�
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." [Required by 15A NCAC 2H .0105 (c)].
B) An engineering proposal detailing the remediation project. [Required by 15A NCAC 2H .0105 (c)].
C) A listing of any chemicals found in 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,
if known.
5. Name of receiving water South fork of the Catawba River
Attach a USGS topographical map with all discharge points clearly marked.
6. Is potential discharge directly to the receiving water? If not, state specifically the discharge point.
Storm sewer directly to the South fork of the Catawba River
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:
Estimate 72.000 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).
Year round — conrininxis
Monthly average flow = 2,190,000 GPD
I certify that I am familiar with the information contained in the application and that to the best
of my knowl dge and belief such information is true, complete, and accurate.
17 7f�A/1V'6T_7/_/ 151#//YC ZW_/vd e ."a/�
PRINTED me of Person Sig ing Title
41
s y� -��-
SIGNATURE of Applicant Date Application Signed
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. (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.)

Short Form C-GW Instructions
Completing This Form
Please type or print. If you print, please print legibly. All items on the form must be answered. Incompleteness of
the form may result in the return of the application. This form may be submitted for groundwater remediation
projects only. This form is designed to provide information for one outfall only. Additional copies of this form must
be completed for additional outfalls.
NPDES Application Number
For a new application for a permit, the Division of Environmental Management will assign an application number. If
the application is for a renewal or modification of an existing permit, the applicant should indicate the permit
number on an appropriate cover letter. DEM will fill out the NPDES number and date received on the application.
Item 1
Enter the applicant's official or legal name in North Carolina as registered with the Secretary of State. Do not use a
colloquial name. Enter the applicant's mailing address consisting of the street or post office box address and the
city, state and zip code. The location must be specified by naming the street, road, highway, etc., the nearby town,
city or community, its zip code, and the county.
Item 2
Give the name, title, and telephone number of a person who is thoroughly familiar with the operation of the facility
and with the facts reported in this application and who can be contacted by the reviewing offices if necessary.
Item 3
Indicate the reason for the submittal of the application. If known, include the SIC of the facility.
Item 4
List the product(s) to be recovered or removed in the remediation project (i.e. leaded gasoline, fuel oil #2,
solvents, etc.).
Items 4 A) - 4 D) should be included in an engineering report submitted by the facility or its consulting firm.
Item 5
Enter the name of the receiving water if the discharge is directly to a surface water. Include a USGS topographical
map (photocopy) of pertinent area with the discharge point clearly marked. Please indicate the name of the map
used.
Item 6
If the discharge is not directly to a surface water, enter the point of discharge (i.e. wet weather ditch to an
unnamed tributary of Panther Creek, etc.). Include a USGS topographical map with the discharge pathway clearly
marked.
Item 7
Enter the maximum design flow capacity expected to be discharged in gallons per operating day.
Item 8
Describe the discharge completely. If the discharge is intermittent or seasonal, list the months of discharge and the
number of days per week of discharge. If the discharge will be continuous, list "year round - continuous." Enter the
monthly average flow in gallons per day.