NC0083887_Permit Issuance_19960829

-y State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
August 29. 1996
Mr. T. J. Orr
Aviation Director
Charlotte/Douglas International Airport
P.O. Box 19066
Charlotte, North Carolina 28219
v� �L
1 • •
CDEHNFit
Subject: iQPDES Permit Issuance
Charlotte/Douglas ha. Airport
Mecklenburg County
Dear Mr. Orr:
In accordance with the application for a discharge permit received on February 14, 1996: the
Division is forwarding herewith the subject 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 U.S. Environmental Protection Agency dated December 6, 1983.
To keep the permit consistent with all requirements for fuel and oil storage facilities across North
Carolina, the following modifications were made for discharges at outfal1001:
• Semi-annual monitoring using EPA Methods 624 and 625 was added.
• Episodic monitoring for acute toxicity was added.
• A limit of 45 mg/l for total suspended residue was added.
• Monitoring for turbidity was eliminated.
• Monitoring for pH was eliminated.
• The limit for oil and grease was eliminated.
Semi-annual monitoring with EPA 624/625 is necessary to identify possible parameters present in
the discharges associated with fuel and oil storage facilities. As mentioned in a July 24, 1996 telephone
conversation with Steve Allen and Steve Pellei of my staff, the Division will consider reducing the
monitoring frequency of certain parameters with a request for a permit modification given the results of
a minimum of 8 to 12 sampling events.
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 2761.1-7447. Unless
such demand is made, this decision shall be final and binding.
Please take note that this permit is not transferable. Part II, EA. 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 pemut that may be required.
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

If you have any questions concerning this permit, please contact Steve D. Pellei at telephone
number [phone]. extension 516.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Mooresville Regional Office, Water Quality Section
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit{
Facility Assessment Unit
Aquatic Survey and Toxicology Unit
Technical Assistance & Certification Group

Permit No. NCO083887
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER AND STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawfid
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Charlotte -Douglas International Airport
is hereby authorized to discharge wastewater and stormwater from a facility located at
Charlotte -Douglas International Airport Stormwater System
Mecklenburg County
to receiving waters designated as Coffey Creek, Ticer Creek, and Taggart Creek, in the Catawba
River Basin
in accordance with the discharge limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, IV, and V hereof.
This permit shall become effective October 1, 1996.
This permit and the authorization to discharge shall expire at midnight on August 31, 2001.
Signed this day August 29, 1996.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NC0083887
SUPPLEMENT TO PERMIT COVER SHEET
Charlotte -Douglas International Airport
is hereby authorized to:
Continue to operate a spill containment area, a 12,000-gallon wastewater
storage tank, an oil/water separator, and a Final holding pond and discharge
stormwater runoff from outfall 001 at the location specified on the attached
map into an unnamed tributary to Ticer Creek which is classified Class C
waters in the Catawba River Basin.
2. Discharge stormwater, used de-icing fluid, and washwater from outfall 002
at the location specified on the attached map into Coffey Creek, which is
classified Class C waters in the Catawba River Basin,
3. Discharge stormwater, used de-icing fluid, and washwater from outfall 003
at the location specified on the attached map into an unnamed tributary to
Taggart Creek which is classified Class C waters in the Catawba River
Basin.
4. Monitor-hTstream from
nea on to nea n
waters i atawba River
All discharges shall be in accordance with the attached schedules as follows:
Part I: Wastewater Monitoring, Controls and Limitations for
Permitted Discharges
Part II: Stormwater Monitoring, Controls and Limitations for
Permitted Discharges
Part III: Standard Conditions for NPDES Permits
Part IV: Annual Administering and Compliance Monitoring Fee
Requirements
Part V: Limitations Reopener
This permit does not relieve the permittee from responsibility for compliance with any
other applicable federal, state, or local law, rule, standard, ordinance, order, judgment,
or decree.

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ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGHT -DUTY ROAD, HARD OR
HARD SURFACE IMPROVED SURFACE
SECONDARY HIGHWAY HARD SURFACE UNIMPROVED ROAD
® = --
Latitude Longitude
Map # G 15 NW Sub -basin 030834
Stream Class C
Discharge Class 100%Industrial
Receiving Strms Coffey, UT to Ticer & Taggart Creek
Design Q Variable Permit expires 8/31/01
CONTOUR INTERVAL 10 FEET
QUAD LOCATION Charlotte/Douglas Intl. Airport
NCO083887
MecklenburgCounty
WWTP

Permit No. NCO083887
PART I
WASTEWATER MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: FINAL LIMITATIONS AND CONTROLS FOR WASTEWATER DISCHARGES
T his permit shaii be modified, or revoked and reissued to incorporate toxicity limitations and
monitoring require:r:er►ts in the event toxicity testing or ct�2er 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 II
STORMWATER MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: FINAL LIMITATIONS AND CONTROLS FOR STORMWATER
DISCHARGES
During the period beginning on the effective date of the permit and lasting until expiration,
the Permittee is authorized to discharge wastewater and stormwater associated with
industrial activity. Such discharges shall be controlled, limited and monitored as specified
below.
A. (1)., Stormwater Pollution Prevention Plan
The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to
as the Plan. This Plan shall be considered public information in accordance with Part III,
Standard Conditions, Section D.8. of this permit. The Plan shall include, at a minimum,
the following items:
a. Site Plan. The site plan shall provide a description of the physical facility and the
potential pollutant sources which may be expected to contribute to contamination_ of
stormwater discharges. The site plan shall contain the following:
(1) A general location map (USGS quadrangle map or appropriately drafted
equivalent map), showing the facility's location in relation to transportation
routes and surface waters, the name of the receiving water(s) to which the
stormwater outfall(s) discharges, or if the discharge is to a municipal
separate storm sewer system, the name of the municipality and the ultimate
receiving waters; and accurate latitude and longitude of the point(s) of
discharge.
(2) A narrative description of storage practices, loading and unloading
activities, outdoor process areas, dust or particulate generating or control
processes, and waste disposal practices.
(3) A site map drawn to scale with the distance legend indicating location of
industrial activities (including storage of materials, disposal areas, process
areas and loading and unloading areas), drainage structures, drainage areas
for each outfall and activities occurring in the drainage area, building
locations and impervious surfaces, and the percentage of each drainage area
that is impervious. For each outfall, a narrative description of the potential
pollutants which could be expected to be present in the stormwater
discharge.
(4) A list of significant spills or leaks of pollutants that have occurred at the
facility during the 3 previous years and any corrective actions taken to
mitigate spill impacts.
(5) Certification that the stormwater outfalls have been evaluated for the
presence of non-stormwater discharges. The certification statement will be
signed in accordance with the requirements found in Part III, Standard
Conditions, Section B. 11.

b. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control
or minimize the exposure of significant materials to stormwater, including structural
and non structural measures. The stormwater management plan, at a minimum,
shall incorporate the following:
(1) A study addressing the technical and economic feasibility of changing the
methods of operations and/or storage practices to eliminate or reduce
exposure of materials and processes to stormwater. Wherever practicable
the permittee shall cover all storage areas, material handling operations,
manufacturing or fueling operations to prevent materials exposure to
stormwater. In areas where elimination of exposure is not practicable, the
stormwater management plan shall document the feasibility of diverting the
stormwater runoff away from areas of potential contamination.
(2) A schedule to provide secondary containment for bulk storage of liquid
products, storage of Section 313 of Title III of the Superfund Amendments
and Reauthorization Act (SARA) water priority chemicals, or storage of
hazardous substances to prevent leaks and spills from contaminating
stormwater runoff. If the secondary containment devices are connected
directly to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices [which shall
be secured with a locking mechanism] and any stormwater that accumulates
in the containment area shall be at a minimum visually observed for color,
foam, and visible sheens, prior to release of the accumulated stormwater.
Accumulated stormwater shall be released if found to be uncontaminated.
Records documenting the individual making the observation, the description
of the accumulated stormwater and the date and time of the release shall be
kept for a period of five years.
(3) A narrative description shall be provided of Best Management Practices
(BMPs) to be considered such as, but not limited to, oil and grease
separation, debris control, vegetative filter strips, infiltration and stormwater
detention or retention, where necessary. The need for structural BMPs shall
be based on the assessment of potential of sources to contribute significant
quantities of pollutants to stormwater discharges and data collected through
monitoring of stormwater discharges.
(4) Inspection schedules of stormwater conveyances and controls and measures
to betaken to limit or prevent erosion associated with the stormwater
systems.
c. Spill Prevention and Response Plan. The Spill Prevention and Response Plan shall
incorporate a risk assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or team) responsible for implementing
the plan shall be identified in the plan. A responsible person shall be on -site at all
times during facility operations that have the potential to contaminate stormwater
runoff through spills or exposure of materials associated with the facility
operations.
3. Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance program shall be developed. The program shall document schedules
of inspections and maintenance activities of stormwater control systems, plant

equipment and systems. Inspection of material handling areas and regular cleaning
schedules of these areas shall be incorporated into the program.
e. Employee Training. Training schedules shall be developed and training provided at
a minimum on an annual basis on proper spill response and cleanup procedures and
preventative maintenance activities for all personnel involved in any of the facility's
operations that have the potential to contaminate stormwater runoff. Facility
personnel (or team) responsible for implementing the training shall be identified in
the Plan.
f. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a
specific position(s) responsible for the overall coordination, development,
implementation, and revision to the Plan. Responsibilities for all components of the
Plan shall be documented and position(s) assignments provided.
g . Plan Amendment. The permittee shall amend the Plan whenever there is a change
in design, construction, operation, or maintenance which has a significant effect on
the potential for the discharge of pollutants to surface waters. The Stormwater
Pollution Prevention Plan shall be reviewed and updated on an annual basis.
The Director may notify the permittee when the Plan does not meet one or more of
the minimum requirements of the permit. Within 30 days of such notice, the
permittee shall submit a time schedule to the Director for modifying the Plan to meet
minimum requirements. The permittee shall provide certification in writing (in
accordance with Part III, Standard Conditions, Section B. 11.) to the Director that
the changes have been made.
h . Facility inspections. Inspections of the facility and all stormwater systems shall
occur at a minimum on a semiannual schedule, once in the fall (September -
November) and once during the spring (April - June). The inspection and any
subsequent maintenance activities performed shall be documented, recording date
and time of inspection, individual(s) making the inspection and a narrative
description of the facility's stormwater control systems, plant equipment and
systems. Records of these inspections shall be incorporated into the Stormwater
Pollution Prevention Plan.
Visual monitoring as required in Part II, Special Conditions, Section C.(2). shall be
performed in addition to facility inspections.
i . Implementation. Implementation of the plan shall include documentation of all
monitoring, measurements, inspections and maintenance activities and training
provided to employees, including the log of the sampling data and of activities taken
to implement BMPs associated with the industrial activities, including vehicle
maintenance activities. Such documentation shall be kept on -site for a period of
five years and made available to the Director or his authorized representative
immediately upon request.
A.(2). Minimum Monitoring and Reporting Requirements
Minimum monitoring and reporting requirements are as follows unless otherwise approved
in writing by the Director of the Division of Environmental Management.

a. Visual monitoring for color, odor, solids, foam, outfall staining, visible sheens and
dry weather flow shall be performed at all stormwater discharge outfall locations.
All visual monitoring shall be documented and records maintained with the
Stormwater Pollution Prevention Plan. The initial visual monitoring event shall be
performed simultaneously with the first analytical monitoring event and
documentation of only this initial visual monitoring event shall be submitted along
with the required analytical monitoring submittal.
b. For purposes of the stormwater sampling required in this permit, all samples shall
be collected from a discharge resulting from a representative storm event (See
definitions in Part III, Standard Conditions). Failure to monitor storm events in
accordance with the specified frequency shall constitute a violation of this permit.
If the stormwater runoff is controlled by a detention pond, the following sampling
requirements shall apply:
(1) If the detention pond detains the runoff generated by one inch of rainfall for
24 hours, visual observations for color, foam, outfall staining, visible
sheens, and dry weather flow are required, but analytical sampling shall not
be required.
(2) If the detention pond discharges only in response to a storm event exceeding
a 25-year, 24-hour storm (See Part III, Standard Conditions, Section A),
the pond shall be considered a non -discharging stormwater control system
and not subject to NPDES requirements, unless the discharge causes a
violation of water quality standards.
Samples analyzed in accordance with the terms of this permit shall be submitted on
forms provided by the Director no later than,January 31 for the previous year in
^�wP which sampling was required to be performed.
`J d. Analytical results from sampling during the final year of the permit term shall be
submitted with the permit renewal application.
e. This permit regulates stormwater discharges. Non-stormwater discharges which
shall be allowed in the stormwater conveyance system are:
(1) All other discharges that are authorized by an NPDES permit.
(2) Uncontaminated groundwater, foundation drains, air -conditioner
condensate without added chemicals, springs, discharges of uncontaminated
potable water, waterline and fire hydrant, water from footing drains, flows
from riparian habitats and wetlands.
(3) Discharges resulting from fire -fighting.
If the storm event monitored and reported in accordance with this permit coincides
with an non-stormwater discharge, the pennittee shall separately monitor and report
all parameters as required under the non-stormwater portion of this permit and
provide this information with the stormwater discharge monitoring report.

b , I , IV11 �Z, .L M14
A. (3). a. EFFLUENT LIMITONS AND MONITORING REQUIREMENTS
�c t dtAA",
During the period beginn.4- on the effective date of the permit and lasting until expiration,
serial number 001 (fuel storage, waste oil storage; outfall from retention pond). Such disch
pcnniace as specified below: �1 C0I4 Cw'� v�,-_r ( 1
Effluent Characteristics -1 &, Discharge Limitations
s h enni�NCO081887
Permittee is authorized to discharge from outfall
;s shall be limited and monitored by the
r� C -�
MQ]itorinq Requirements
to 1� I ESL 11aJL y UnJU (specify) Measu an sampi m I
4101 1d•,in � Mon. Avg. Daily Max Mon. Ava on
Max i�n�y Location
Flow" Qv(M' y
q� onthl InstantaneouOF
Oil and Grease "' r(( . Monthly E
Total Suspended Residue ��1' l 45 mg/1 ✓ Monthly Grab E
EPA Methods 624/625 M� Semi-annually Grab E
Acute Toxicity ' ** Episodic Grab E �Qu
*Sample location: �n h vo H) �(�D✓t1
Pvlonitoring shall be conducted during normal work h rs eft oril c 7
^ v1t�rl.
*For each rep re ative storm event the total precipit onn duration, and total flow must be monitored. Total flow shall be �� M24�
d either;,(a) sured continuously, (b) calculat sed on the amount of area draining to tt e amour utlt-upon (impervious) (I
area d the total amount of rainfall, or estimated by the measurement of 0 minute inte wring the rainfall event.
LV `b:
** *The grab sample for oil and grease shall be skimmed,from the surface of a quiescent (calm water) zone
****Acute Toxcity (Fathead Minnow, 24-hour) Monitoring, Episodic, See Part If, Section C: Special Conditions, (3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no direct discharge of tank solids, tank bottom water, or the rag layer.
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A. (3). b. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NCO083887
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall
serial nutmber 002--(vehicle-washing, fuel-6tor-age,aircraft fueling, aircraft -maintenance, and de-icing chemical storage, de-icing operations;
offey Creek, 100 feet below double 8' x 10' box culvert at the end of New Dixie Road). Such discharges shall be limited and monitored
by the permittee as specified below:
F_flLueat�hata r�tisSis. s_
Flow
Total Rainfall (inches)
Event Duration (minutes)
Total Suspended Residue
Oil and Grease
Detergents (MBAS)
Organics
Glyco
l
NH3 as N
TKN
*Sample location: E - Effluent
Discharge_
Lbs/ An
Mon. Avg, Daily Max
Limitation
Units cif
n. Ava Daily Max
Mssdtoring Baquirements d
Measur_amentinnle *Sample
F nc Location
E
Quarterly
Grab
Quarterly
Grab
Quarterly
Grab
Annually
Grab
Grab
Grab
Grab
**For each representative storm event the total precipitation, storm duration, and total flow must be monitored. Total flow shall be
either; (a) measured continuously, (b) calculated based on the amount of area draining to the outfall, the amount of built -upon (impervious)
area, and the total amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals during the rainfall event.
***Perform EPA Method No. 624 and 625 analyses on the sample.
****Glycol shall be monitored during the first discharge event each year to obtain a representative sample. NH3-N and TKN shall only be
(1 monitored if urea is used for de-icing_ De-icing monitoring requirements may be conducted in conjunction with monthly sampling.
The pH shal of be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored c uarterly at the effluent
by grab sat le.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (3). c. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NCO083887
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall
serial number 003 (vehicle washing, aircraft washing, aircraft fueling, aircraft maintenance; FBO basin de: ntion pond outfall) Such
discharges shall be limited and monitored by the penrittee as specified below:
Effluent Characteristics
Flow
Total Rainfall (inches)
Event Duration (minutes)
Total Suspended Residue
Oil and Grease
Detergents (MBAS)
Organics —
Glycol I n O V
NH3 as NN� rVIK,^,','A_'`
TKN
i, ()
"Sample location: E - Effluent
Discharge
LbU Slay
Mon. Avg. Daily Max
\ � I k.&V1
Limitations
ri (specify)
Mon. Avg Daily Max
45 mg/I
Jde
Monitor nk Requirements
Measurement Sample. *Sample
Freou£.M, _Type Location
E
o
Grab E
Grab E
Grab E
Annually
Grab E
Grab E
Grab E
Grab E
Ir-I�.y1)
j���� e*"`For each representative storm event the total precipitation, storm duration, and total flow must be monitored. Total flow shall be
CCCCl11Pither; (a) treasured continuously, (b) calculated based on the amount of area draining to the outfall, the amount of built -upon (impervious)
area, and the total amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals during the rainfall event.
***Perform EPA Method No. 624 and 625 analyses on the sample.
****Glycol shall be monitored during the first discharge event each year to obtain a representative sample. NH3-N and TKN shall only be
,1 monitored if urea is used for de-icing. De-icing monitoring requirements may be conducted in conjunction with quarterly sampling.
TI1� The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored quarterly at the effluent
by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (3). d. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS i�Q ' ` Permit No. NCO083887
During the period beginning on the effective date of the permit and lasting until expiration, the Pennittee is authorized to monitor instream from
serial number 004 (upstream of airport; Coffey Creek, airport northern boundary at Southern Railroad). Monitoring shall be conducted by the
permittee as specified below:
Effluent Characteristics
Discharge
LWd"
Mon. Avg Daily Max
Flow 2
Total Rainfall (inches)
Event Duration (minutes)
Total Suspended Residue
Oil and Grease
Detergents (MBAs)
Organics"'
Glycol S
NH3 as N �y
TKN
*Sample location: I - Instream
Limitations
Units (§R�
Mon. Avg Daily Max
SI^'jeA,'Vd*Vill
iti �
Motoring Requirements
mea wameni
Sample aMple_
.EL@$B.ns_y
Tvoe Location
�{ CQuart'rly
Grab 1
uarterly
Grab I
Quarterly
Grab I
Annually
Grab
Grab
Grab i
Grab I
**For each representative storm event the total precipitation, storm duration, and total flow must be monitored. Total flow shall be
either; (a) measured continuously, (b) calculated based on the amount of area draining to the outfall, the amount of built -upon (impervious)
area, and the total amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals during, the rainfall event.
***Perform EPA Method No. 624 and 625 analyses on the sample.
(t skh.rn . - .
***Glycol shall be monitored during the first discharge event each year to obtain a representative sample. NF13-N and TKN shall only be
monitored if urea is used for de-icing. De-icing monitoring requirements may be conducted in conjunction with monthly sampling.
The H shall not less than dazd u nor unit be mon' uarterl
gra m
There shall be`no discharge t s or visible foam in other r nts.

Permit No. NCO083887
SECTION B: SCHEDULE OF COMPLIANCE
In
1. The permittee shall comply with stormwater monitoring requirements and controls
specified for stormwater discharges in accordance with the following schedule:
The Stormwater Pollution Prevention Plan shall be developed and implemented by
the effective date of this permit.
2. Permittee shall at all times provide the operation and maintenance necessary to
operate the permitted stormwater controls at optimum efficiency.
1
SECTION C: SPECIAL CONDITIONS
C. (1). GLYCOL AND UREA USAGE
a. GLYCOL USAGE
The permittee shall report the volume of glycol dispensed each month and the number of days
glycol was dispensed each month.
b. UREA USAGE
The permittee shall report the pounds of urea dispensed each month and the number of days
urea was dispensed each month.

Permit No. N00083887
C. (2). Visual Monitoring
Visual monitoring requires a qualitative visual inspection of each stormwater outfall for the purpose of evaluating the effectiveness of
the Stormwater Pollution Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests are
required. Visual monitoring of stormwater outfalls does not need to be performed during a representative storm event.
Stormwater Discharge
Characteristics
Fre uenc 1
Monitoring
iype2
Monitoring
Location3
Color
Semi -Annual
Visual
.SD>3
Odor
Semi -Annual
Visual
SDO
Clarity
Semi -Annual
Visual
SDO
FloatingSolids
Semi -Annual
Visual
SDO
Suspended Solids
Semi -Annual
Visual
SILO
Foam
Semi -Annual
Visual
SDO
Oil Sheen
Semi -Annual
Visual
SDO
Other obvious indicators
of stormwater pollution
Semi -Annual
Visual
SDO
Footnotes:
1 Frequency: The first visual monitoring event during the term of the permit must be performed during the initial analytical
monitoring event. All subsequent visual monitoring will be performed twice per year, once in the spring and once in the fall.
2 Monitoring Type: Visual monitoring requires a qualitative visual observation of each stormwater outfall. No analytical testing or
sampling is required.
3 Sample Location: Stormwater Discharge Outfall (SDO)

Pert -nit No. NCO083887
C. (3). ACUTE TOXICITY MONITORING (EPISODIC)
The permittee shall conduct FIVE acute toxicity tests using protocols defined as definitive in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of
Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead
Minnow (Pimephales promelas) 24 hour static test. Effluent samples for self -monitoring purposes
must be obtained below all waste treatment. Sampling and subsequent testing will occur during the
first five discrete discharge events after the effective date of this permit. After monitoring of the
first five toxicity tests, the permittee will conduct one test annually, with the annual period
beginning in January of the next calendar year. The annual test requirement must be performed and
reported by June 30. If no discharge occurs by June 30, notification will be made to the Division
by this date. Toxicity testing will be performed on the next discharge event for the annual test
requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be
sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
4401 Reedy Creek Rd.
Raleigh, N.C. 2760,
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 test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Quality 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.
Failure to submit suitable test results will constitute noncompliance with monitoring requirements.
EAM Fathead 24 Version 3196

Page 1 of 20
PART III
STANDARD CONDITIONS FOR NPDES PERTMITS
SECTION A: DEFINITIONS
1. Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act, as
amended, 33 USC 1251, et. seq.
2. Best Management Practices (BMPs)
Schedules of activities, prohibitions of practices, maintenance procedures, and other
management practices to prevent or reduce the pollution of waters of the United States.
BMPs also include treatment requirements, operation procedures, and practices to control
plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw
material storage.
3. Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a
single above ground storage container having a capacity of greater than 660 gallons or
with multiple above ground storage containers having a total storage capacity of greater
than 1,320 gallons.
4. 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 (1).
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. .

Part III
Page 2 of 20
5.
1
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.
Coal Pile Runoff
The rainfall runoff from or through any coal storage pile.
7. 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

Part III Page 3 of 20
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.
8. DEM or Division
Means the Division of Environmental Management, Department of Environment, Health
and Natural Resources.
9. AMC
Used herein means the North Carolina Environmental Management Commission.
10. Hazardous Substance
A hazardous substance means any substance designated under 40 CFR Part 116 pursuant
to Section 311 of the Clean Water Act.
11. Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and
which is not a land treatment facility, a surface impoundment, an injection well, a
hazardous waste long-term storage facility or a surface storage facility.
12. Mass/Day 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.
.e .r
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.

Part III Page 4 of 20
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.
13. 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 infrequent times when
there may be no flow or for infrequent maintenance activities on the flow device.
14. Permit Issuing Authority
The Director of the Division of Environmental Management.
15. Point Source Discharge_
Any discernible, confined and discrete conveyance, including but specifically not limited
to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling
stock, or concentrated animal feeding operation from which pollutants are or may be
discharged to waters of the state.
16. .Representative Storm Event
A storm event that is preceded by at least 72 hours in which no storm event measuring
greater than 0.1 inches has occurred.
17.. . Runoff Coefficient
The fraction of total rainfall that is not infiltrated into or otherwise retained by the soil,
concrete, asphalt or other surface upon which it falls that will appear at the conveyance as
runoff.
18. Sample Types
a. Composite Sample: A composite sample shall consist of:
(1) a series of grab samples collected at equal time 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 by a preset number of gallons passing

Part III Page 5 of 20
the sampling point. Flow measurement between sample intervals shall be
determined by use of a flow recorder and totalizer, and the present gallon interval
between sample collection fixed at no greater than 1/24 of the expected total daily
flow at the treatment system, or
(3) a single, continuous sample collected over a 24 hour period proportional to the
rate of flow.
In accordance with (1) above, the time interval between influent grab samples shall be no
greater than once per hour, and the time interval between 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 intervals 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 (6) 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.
19. Secondary Containment
Spill containment for the contents of the single largest tank within the containment
structure plus sufficient freeboard to allow for the 25-year, 24-hour storm event.
20. Section 313 Water Priority Chemical
A chemical or chemical category which:
a. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency
Planning and Community Right -to -Know Act of 1986;
b. Is present at or above threshold levels at a facility subject to SARA title III, Section
313 reporting requirements; and
c. That meet at least one of the following criteria:
(1) Is listed in appendix D of 40 CFR part 122 on either Table II (organic
priority pollutants), Table III (certain metals, cyanides, and phenols) or
Table IV (certain toxic pollutants and hazardous substances);
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the
CWA at 40 CFR 116.4; or
(3) * Is a pollutant for which EPA has published acute or chronic water quality
criteria.
21. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents,
and plastic pellets; finished materials such as metallic products; raw materials used in
food processing or production; hazardous substances designated under section 101(14) of
CERCLA; any chemical the facility is required to report pursuant to section 313 of Title

Part III Page 6 of 20
III of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that
have the potential to be released with stormwater discharges.
22. Si: nificant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of
reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and
CFR 117.21) or section 102 of CERCLA (Ref: 40 CFR 302.4).
23. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately
following rainfall or as a result of snowmelt.
24. Stormwater Associated with Industrial Activity
The discharge from any point source which is used for collecting and conveying
stormwater and which is directly related to manufacturing, processing or raw material
storage areas at an industrial site. The term does not include discharges from facilities or
activities excluded from the NPDES program.
The following categories of facilities are considered to be engaging in "industrial
activity":
a. Facilities subject to stormwater effluent limitations guidelines, new source
performance standards, or toxic pollutant effluent standards under 40 CFR Subchapter
N Parts 400 - 471 (except facilities which are exempted under (k) of this definition);
b. Facilities classified as Standard Industrial Classifications 24 (except 2434), 26 (except
265 and 267), 28, 29, 30, 311, 32, 33, 3441, 373;
c. Facilities classified as Standard Industrial Classifications 10 through 14 (mineral
industry) including active or inactive mining operations (except for areas of coal
mining operations meeting the definition of a reclamation area under 40 CFR
434.11(1)) and oil and gas exploration, production, processing. or treatment
operations, or transmission facilities that discharge stormwater contaminated by
contact with or that has come in contact with, any overburden, raw material,
intermediate products, finished products, byproducts or waste products located on the
site of such operations; inactive mining operations are mining sites that are not being
actively mined, but which have an identifiable owner/operator;
d. Hazardous waste treatment, storage, or disposal facilities, including those that are
operating under interim status or a permit under Subtitle C of RCRA;
e. Landfills, land application sites, and open dumps that receive or have received any
industrial wastes (waste that is received from any of the facilities described under this
definition) including those that are subject to regulation under Subtitle D of RCRA;
f. Facilities involved in the recycling of materials, including metal scrapyards, battery
reclaimers, salvage yards and automobile junkyards, including but limited to those
classified as Standard Industrial Classification 5015 and 5093;
g. Steam electric power generating facilities, including coal handling sites;

Part III Page 7 of 20
h. Transportation facilities classified as Standard Industrial Classifications 40, 41, 42,
44, and 45 which have vehicle maintenance shops, equipment cleaning operations, or
airport deicing operations. Only those portions of the facility. that are either involved
in vehicle maintenance (including vehicle rehabilitation, mechanical repairs, painting,
fueling and lubrication), equipment cleaning operations, airport deicing operations, or
which are otherwise identified under (a)-(g) or (i)-(k) of this definition are associated
with industrial activity;
Treatment works treating domestic sewage or any other sewage sludge or wastewater
treatment device or system, used in the storage treatment, recycling, and reclamation
of municipal or domestic sewage, including lands dedicated to the disposal of sewage
sludge that are located within the confines of the facility, with a design flow of 1.0
mgd or more, or required to have an approved pretreatment program under 40 CFR
part 403. Not included are farm lands, domestic gardens or lands used for sludge
management where sludge is beneficially reused and which are not physically located
in the confines of the facility, or areas that are in compliance with section 405 of the
CWA;
j. Construction activity including clearing, grading and excavation activities except:
operations that result in the disturbance of less that five acres of total land area which
are not part of a larger common plan of development or sale;
k. Facilities under Standard Industrial Classifications 20, 21, 22, 23, 2434, 25, 265. 267,
27, 2831, 285, 30, 31 (except 311), 323, 34 (except 3441), 35, 36, 37 (except 373), 38,
39, 4221-25, (and which are not otherwise included within (a)-O) of this definition).
For the categories of industries identified in (a) through 0) of this definition the term
includes, but is not limited to, stormwater discharges from industrial plant yards;
immediate access roads and rail lines used or traveled by carriers of raw materials,
manufactured products, waste material, or by-products used or created by the facility;
material handling sites; refuse sites; sites used for the application or disposal of process
wastewaters; sites used for the storage and maintenance of material handling equipment;
sites used for residual treatment, storage, or disposal; shipping and receiving areas;
manufacturing buildings; storage areas (including tank farms) for raw materials, and
intermediate and finished products; and areas where industrial activity has taken place in
the past and significant materials remain and are exposed to stormwater. For the
categories of industries identified in (k), the term includes only stormwater discharges
from all areas listed in the previous sentence (except access roads) where material
handling equipment or activities, raw material, intermediate products, final products,
waste material, by-products, or industrial machinery are exposed to stormwater. .
Material handling activities include the: storage, loading and unloading, transportation, or
conveyance. of any raw material, intermediate product, finished product, by-product or
waste product. The term excludes areas located on plant lands separated from the plant's
industrial activities, such as office buildings and accompanying parking lots as long as
the drainage from the excluded areas is not mixed with stormwater drained from the
above described areas.
Industrial facilities (including industrial facilities that are Federally or municipally owned
or operated that meet the description of the facilities listed in (a)-(k)) include those
facilities designated under 40 CFR 122.26(a)(1)(v).

Part III
Page 8 of 20 • J
25. Ten Year Design Storm
The .precipitation event of a duration which will produce the maximum peak rate of
runoff for the watershed of interest resulting from a rainfall event of an intensity expected
to be equaled or exceeded, on the average, once in ten years.
26. Total Flow
The flow corresponding to the time period over which the sample collection occurs. The
total flow calculated based on the size of the area draining to the outfall, the amount of
the built -upon (impervious) surfaces within the drainage area, and the total amount of
rainfall occurring during the sampling period.
27. Toxic Pollutant
A toxic pollutant is any pollutant listed as toxic under Section 307(a)(1) of the Clean
Water Act.
28. Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning
operations, or airport deicing operations.
29. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported
by water, air, gravity, or ice from its site of origin which can be seen with the unaided
eye.
30. Waste Pile
Any non -containerized accumulation of solid, non -flowing waste that is used for
treatment or storage.
SECTION B. GENERAL CONDITIONS
1.` Duty to C00121Y `
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.

Part III Page 9 of 20
b. The Clean Water Act provides that any person who violates a permit condition is
subject to a civil penalty not to exceed $25,000 per day for each violation. Any
person who negligently violates any permit condition is subject to criminal penalties
of $2,500 to $25,000 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 $50,000 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 $125,000. [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, 3029 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. Penalties for Class II violations are not to exceed
$10.000 per day for each day during which the violation continues, with the
maximum amount of any Class II penalty not to exceed $125,000.
2. Duty 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 Liabili
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

Part III
Page 10 of 20 '
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.
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

Part III Page 11 of 20
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 persona A person is a duly authorized representative only if:
(1) 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.
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 permittee 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. al.

Part III Page 12 of 20
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 MAIN7ENANTCE 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.
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. B_ of Treatment Facilities
a. Definitions

r
• Part III Page 13 of 20
(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
substantial 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:
(i) Bypass was unavoidable to prevent loss of life, personal injury or severe
property damage;
(ii) There were no feasible alternatives to the bypass, such as the use of auxiliary
treatment facilities, retention of untreated wastes or maintenance during
normal 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
(iii) The permittee submitted notices as required 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 which there is unintentional and temporary
noncompliance with technology based permit effluent limitations because of factors
-.A.

Part III Page 14 of 20 '
beyond the reasonable control of the permittee. An upset does not include
noncompliance to the extent caused by operational error, improperly designed
treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or
careless or improper operation.
b. Effect of an upset.
An upset constitutes an affirmative defense to an action brought for noncompliance
with such technology based permit effluent limitations if the requirements of
paragraph c. of this condition are met. No determination made during administrative
review of claims that noncompliance was caused by upset, and before an action for
noncompliance, is final•, administrative action subject to judicial review.
c. Conditions necessary for a demonstration of upset.
A permittee who wishes to establish the affirmative 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 properly 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.
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 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

Part III Page 15 of 20
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 C)®1
Monitoring results obtained during the previous, month ) shall be summarized for each
month and reported on a monx_ Discharge Morutonng..Report.�D 1A) Form (DEM No.
2; 3�)^ O-r 6mauveTorms approved by the bisector, 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 discharge
rates throughout the range of expected 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. Vest 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

-s
Part III Page 16 of 20 '
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 $10,000 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 $20,000 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
permittee 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 measuremerts;. t
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.
8. Inspection and Entex
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;

r
• Part III Page 17 of 20
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. Chancre 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 122.29 (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.
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.

Part III
s
Page 18 of 20
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 H, 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 Repo
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 not
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 Noncom liancC
The permittee shall report all instances of noncompliance not reported Onder 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.
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.

Part III Page 19 of 20
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 143-215.3(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 $10,000 per violation, or by imprisonment for not more than two years per violation,
or by both.
SECTION F. OTHER REQUIREMENTS
1. 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

Part III Page 20 of 20
Environmental Management and written approval and Authorization to Construct has
been issued.
2. 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.
3. Changes in Discharges of Toxic Substances
4.
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 anyactivity 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.
The permittee shall continually evaluaijtperll wastewater disposal alternatives and pursue
the most environmentally sound alt ative of the reasonably cost effective alternatives.
If the facility is in substantial n-compliance with the terms and conditions of the
NPDES permit or governing s, regulations or laws, the permittee shall submit a report
in such form and detail as quired by the Division evaluating these alternatives and a
plan of action within six (60) days of notification by the Division.
1` Q

4
PART IV
ANNUAL ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
The permittee 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.
PART V V-
LIMITATIONS REOPENER Ae
This permit shall be modified or alternatively, revoked/andre'ued, to comply withany
applicable effluent guideline or water quality standard issuoved under Sections 302(b)
(2) (c), and (d), 304(b) (2) and 307(a) of the Clean Water effluent guideline or water
quality standard so issued or approved:
a. contains different conditions or is othe ise more stringent than any effluent
limitation in the permit; or
b. controls any pollutant not limited inAe permit.
The permit as modified or reissued der this paragraph shall also contain any other
requirements in the Act then applicable

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DEC 2 Q 1993
.<.. To:
SOC PRIORITY PROJECT: Yes_ No X
11 If Yes, SOC No.
Pe flits and Engineering Unit
Water Quality Section
Attention: Jay Lucas
Date: December 13, 1993
NPDES STAFF REPORT AND RECOMMENDATION
County: Mecklenburg 03- 08- 32c
Permit No. NCO083887 Doi = Lrc Tt[E2 �n�K
002 = CDvgel Cxsuiz,
PART I - GENERAL INFORMATION 003 ' TArcVF1c CH,oei-
004 = CoFCEy braae-
1. Facility and Address: Charlotte/Douglas
Airport
5501 Josh Birmingham Parkway
Charlotte, North Carolina 28214
2. Date of Investigation: 12-13-93
3. Report Prepared By: G. T. Chen
4. Persons Contracted and Telephone Number: R. Stephen Allen,
Airport Planner; [phone]
S. Directions to Site: Charlotte/Douglas International Airport
is located at 5501 Josh Birmingham Parkway on the west side of
the City. The Airport Administration is on the second floor
of the Airport Terminal.
6. Discharge Point(s). List for all discharge points: Multiple
discharge points, see attached Airport Storm Drainage Master
Plan for details.
Latitude:
Longitude:
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: G 15 NW USGS Name: Charlotte West, NC
7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:
8. Topography (relationship to flood plain included): Flat; the
site does not appear to be in a flood plain.
9. Location of nearest dwelling: None within 1,.

10. Receiving stream or affected surface waters: Tributaries to
Coffey Creek and Taggart Creek.
a. Classification: Both Coffey Creek and Taggart Creek are
classified as C waters.
b. River Basin and Subbasin No.: Catawba and 03-08-34
C. Describe receiving stream features and pertinent
downstream uses: Storm drainage ditches tributary either
to Coffey Creek or to Taggart Creek. Downstream users
are unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: MGD (Ultimate
Design Capacity) Intermittent discharge.
b. What is the current permitted capacity of the wastewater
treatment facility? N/A, proposed new discharge.
C. Actual treatment capacity of the current facility
(current design capacity)? Intermittent discharge.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: N/A.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Two
retention ponds in series (size unknown) located between
runways.
f. Please provide a description of proposed wastewater
treatment facilities: None.
9. Possible toxic impacts to surface waters: None
h. Pretreatment Program (POTWs only): N/A
in development: approved:
should be required: not needed:
2. Residuals handling and utilization/disposal scheme: No solids
will be generated from the proposed discharge.
a. If residuals are being land applied, please specify DEM
Permit No.:
Residuals Contractor:
Telephone No.:
NPDES Permit Staff Report
Version 10192
Page 2

•
1
�
b. Residuals stabilization: PSRP:
RFRP:
Other:
c. Landfill:
d. Other disposal/utilization scheme (specify):
3. Treatment plant classification (attach completed rating
sheet): Class 0, see attached rating sheet.
4. SIC Code(s): 4581
Wastewater Code(s) of actual wastewater, not particular
facilities, i.e., non -contact cooling water discharge from a
metal plating company would be 14, not 56.
Primary: De-icing Water Secondary: 73
Main Treatment Unit Code: 00000
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.
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated. Wastewater
generated is from de-icing of aircraft plus stormwater. There
are no apparent alternatives to discharge.
Spray Irrigation:
Connection to Regional Sewer System:
NPDES Permit Staff Report
Versi on 1 D/92
Page 3

lb
Subsurface:
Other Disposal Options:
5. Other Special Items: None.
PART IV - EVALUATION AND RECOMMENDATIONS
The Charlotte/Douglas International Airport requests an NPDES
Discharge Permit for the disposal of an undetermined amount of
wateewater generated from de-icing of aircraft during the winter
season. The wastewater is a mixture of water and ethylene glycol
(50/50 ratio). Ethylene glycol, which is used as an anti-
freeze/coolant, is very toxic to mammals.
Pending final review and concurrence by the SERG, it is
recommended that an NPDES Discharge Permit be issued to the
applicant as requested..
Should you have any questions regrading this matter, please
advise.
4�� - ;;Z� 44t
Signature of Report Preparer
Water Quality ReV onal Supervisor
Date
NPDES Perna t Staff Report
Versi on 10192
Page 4