RDU International Airport (22)

\oma
r NCDENR
o -c
Mr Steven M Pittman
Michael F Easley
Governor
William G Ross, Jr, Secretary
North Carolina Department of Environment and Natural Resources
June 2, 2008
Deputy Airport Director — Facilities, Engineering & Maintenance
PO Box 80001
RDU Airport, North Carolina 27623
Dear Mr Pittman
Coleen H Sullins, Director
Division of Water Quality
Subject Issuance of NPDES Permit NCO084514
for the Raleigh Durham Airport
Wake County
The Division of Water Quality (the Division) hereby issues this permit 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 October 15, 2007, or as subsequently amended
The Division acknowledges your comments on the draft permit received from Gma Damson, RDU
Environmental Program Officer We offer the following comments
Changes to the Permit Draft. We have updated the Co -Permittee list per your instructions, and the
Division has corrected page numbers, footnotes, and clarified references to Special Conditions We have
revised Special Condition A (9 ) to correct discrepancies with Section A (5.) To clarify, please begin
monitoring Outfall 007 with the commencement of any passenger -aircraft operations that affect this
outfall, in accord with revised Special Condition A (9 ), regardless your renovation schedule at
Terminal C (2) Monitoring of Outfall 016 shall commence with the effective date of the permit
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter This request must take the form of a written petition conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714) Unless such demand is
made, this decision shall become final and binding
N C Division of Water Quality / NPDES Unit Phone [phone], extension
1617 Mail Service Center, Raleigh, NC 27699-1617 Fax [phone]
Internet h2o enr state nc us e-mail doe corporon@ncmail net

Issuance of NPDES Permit NC0084514
Raleigh-Durham Airport (RDtD
Page 2 of 2
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of this permit. This permit does not affect your legal
obligation to obtain other permits that may be required by the Division of Water Quality, the Division of
Land Resources, the Coastal Area Management Act, or any other Federal or local government.
If you have any questions concerning this permit, please contact Joe Corporon at telephone number
[phone], extension 597 or email [e-mail].
Sincerely,
Z� /" V�4'� -
4( : Coleen H. Sullins
Attachment: NPDES Permit NC0084514
cc: Central Files
NPDES Program files
Aquatic Toxicology Unit
Raleigh Regional Office/Water Quality Section

Permit No NCO084514
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER AND STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions 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,
Raleigh-Durham Airport Authority and Co -Permittees
(listed on the following page)
are hereby authorized to discharge wastewater and stormwater from a facility located at
Raleigh-Durham International Airport (RDU)
Wake County
to receiving waters designated as UT Brier Creek, Brier Creek Reservoir, UT Sycamore Creek and
UT Haley's Creek in the Neuse River Basin in accordance with effluent limitations, monitoring
requirements, and other conditions set forth in Parts I, II, III, and IV hereof
The permit shall become effective on July 1, 2008.
This permit and the authorization to discharge shall expire at midnight on February 28, 2013.
Signed this day June 2, 2008.
4t-, Coleen H Sullins, Dir ctor
Division of Water Quality
By Authority of the Environmental Management Commission

Co -Permittees
ABX Air
Air Canada
Alamo Rent-A-Car
American Airlines
American Eagle
Aviation Management Group (AMG)
Avis Rent-A-Car
BAX Global
Bellefonte dba Ram (Ram Air)
Budget Rent-A-Car
Charter Express
Colonial Pipeline
Continental Airlines
Delta Air Lines
DLH
Dollar Rent-A-Car
Elite Line Service
Enterprise Rent-A-Car
Expressjet
Federal Express
Hertz Corporation
Jet Blue
Jetcraft
- r
fA S
Permit No NC0084514
Landmark Aviation
Lichtin
LSG Sky Chefs
Martin Marietta
Mesa Airlines
National Rent-A-Car
NCDOT- Div of Aviation
Northwest Airlines
P K Enterprises (Gregory Poole)
Progress Energy
Quantem Aviation
SAS
Sheetz _
Skytanking
Southwest Airlines
TAK Air
Thrifty Car Rental
United
United Parcel Service
UPS Supply Chain Solutions
USAirways
Worldwide Flight Services
The list of Co -Permittees may be amended from time to time to reflect changes in
tenants/ operators at the facility As tenants/ operators commence or terminate
operations at the airport, the list will be amended to reflect the appropriate
effective dates. The addition or deletion of tenants/ operators shall be effective on
the date of commencement or termination of operations, and the amended list
will be made part of the permit as the information is received from the Raleigh-
Durham Airport Authority
Page 2

SUPPLEMENT TO PERMIT COVER SHEET
Permit NCO084514
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked,
and as of this permit issuance, any previously issued permit bearing this number is no longer effective
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions described herein
The Raleigh-Durham Airport Authority and Co -Permittees are hereby authorized to:
Outfall 001 (Runway 5R -23L) Continue to discharge stormwater runoff from runway 5R -23L,
runway safety area, Aircraft Operations Area, vehicle and aircraft maintenance and fueling
areas, remote fuel loading area, outdoor storage areas, outdoor parking areas, washwaters,
non -contact cooling water, and used de-icing and anti -icing fluids, through Outfall 001 into an
unnamed tributary to Brier Creek, a Class C -NSW water in the Neuse River Basin, at the
location specified on the attached map
2 Outfall 002 (Bulk Fuel Facility, Glycol Storage) Continue to discharge treated wastewater
from oil/water separator in Bulk Fuel Facility area, washwaters, stormwater runoff from the
vehicle maintenance and washing areas, fuel storage areas, outdoor storage areas, anti-
icmg/de-icing storage area, and rental car facilities through Outfall 002 into Brier Creek
Reservoir, a Class C -NSW water in the Neuse River Basin, at the location specked on the
attached map
3 Outfall 003 (West of Runway 5L -23R) Continue to discharge stormwater runoff from a
portion of runway 5L -23R, Terminals A & C, vehicle and aircraft washing, maintenance and
fueling areas, outdoor storage areas, treated wastewater from oil/water separator, washwaters,
and used de-icing and anti -icing fluids, discharging to a stormwater pond and through Outfall
003 into Brier Creek Reservoir, a Class C -NSW water in the Neuse River Basin, at the location
specified on the attached map
4 Outfall 004 (General Aviation Apron) Continue to discharge stormwater runoff from the
north ramp General Aviation Apron and North Cargo Operations, Taxiways J and L, runway
safety area, vehicle and aircraft washing, maintenance and fueling areas, outdoor storage
areas, used de-icing and anti -icing fluids, washwaters, and treated wastewater from oil/water
separator in fuel dispensing area, through Outfall 004 into an unnamed tributary to Sycamore
Creek, a Class B -NSW water in the Neuse River Basin, at the location specified on the attached
map
5 Outfall 007 (West of Runway 5L -23R) Continue to discharge stormwater runoff' from a
portion of runway 5L -23R, General Aviation Area, Terminal C, Taxiway B, , vehicle and aircraft
washing areas, maintenance and fueling areas, outdoor storage areas, washwaters, and used
de-icing and anti -icing fluids, through Outfall 007 into Brier Creek Reservoir, a Class C -NSW
water in the Neuse River Basin, at the location specified on the attached map
6 Outfall 016 (RDU Maintenance Facilityl Continue to discharge stormwater runoff from the
RDU maintenance facility, through Outfall 016 into an unnamed tributary to Haley's Creek, a
Class C -NSW water in the Neuse River Basin, at the location specified on the attached map
Page 3

Permit NCO084514
The Raleigh-Durham International Airport is located in Wake County
[This page intentionally left blank]
MAP
Page 4

i 17
a
--BRIER CREEK
1RESER VOZ&
002
001'
Ran
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Ujj
If
AL:
k
1'007
3
RALEIGH -
Z 124TERNA TIOA�iL AIR'P OR 7 .4:"
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016 X r�j
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LIAM B UMS1
4
STATE PARI
Raleigh-Durham (RDU)
International Airport
Receiving Streams: Various Sub -Basin: 03-04-02
Drainage Basin: Neuse River Basin
State Grid/ USGS Quads: D 23 NE / East Durham, NC
D 23 SE / Cary, NC
N
Fac' '
not to scale
6
& NPDES Pen -nit NCO084514
North
L
Wake County

Permit NCO084514
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [001]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 001- (Southwest of Runway 5R -23L). Such discharges shall be
monitored by the Permittee and limited as specified below:
k PARAMETER t
LIMNS k
MONITCIRING REQUIREMENTS;
Monthly Daily1�ears�k
wmea Sa i
Samre
Flow
1 1
Effluent
Total Rainfall (inches)
1
Effluent
Event Duration (minutes)
1
Effluent
Total Suspended Solids
Annually2 Grab
Effluent
Oil and Grease3
45.0 mg/L
Annually2 Grab
Effluent
Detergents (MBAS)
Annually2 Grab
Effluent
pH
> 6.0 and < 9.0 standard units
Annually2 Grab
Effluent
Benzene
Annually2 Grab
Effluent
Xylene
Annually2 Grab
Effluent
Toluene
Annually2 Grab
Effluent
Ethylbenzene
Annually2 Grab
Effluent
Total Nitrogen
(NO2N+ NO3N+ TKN)
Quarterly Grab
Effluent
Total Phosphorus
Quarterly Grab
Effluent
Dissolved Oxygen
4 Grab
Downstream
Propylene Glycol
4 Grab
Effluent
NH3 as N
4 Grab
Effluent
Acute Toxicity5
Annual Grab
Effluent
Notes:
1. For each representative storm sampling event (See Part II, A. (19)), the total precipitation, storm duration, and total
flow must be monitored. Total flow shall be either:
(a) measured continuously, or
(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 (this method of flow measurement should not be used for facilities with
large runoff -collection ponds); or
(c) estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. The total number of samples during the permitting cycle shall reflect seasonable variability.
3. When possible the grab sample should be skimmed from the surface of a quiescent (calm water) zone.
4. The Permittee shall monitor Propylene Glycol, Dissolved Oxygen and Ammonia during three (3) discharge events
each year (as available) at the time of de-icing/anti-icing or during the next separate discharge event after de-
icing/ -anti -icing. A discharge event is defined as the runoff from precipitation in the form of snow, sleet, freezing rain
or a rain event following a frost sufficiently heavy to require aircraft be de-iced or anti -iced at the airport. If, after the
collecting a minimum of six (6) samples over a minimum of two (2) consecutive seasons, dissolved oxygen is not
reported below 5 mg/ L, the Permittee may reduce monitoring of dissolved oxygen and propylene glycol to one (1)
sample annually. If ammonia is not reported greater than or equal to 2 mg/L, ammonia may be reduced to one (1)
sample annually. Propylene glycol shall be monitored in conjunction with Acute Toxicity. If ethylene glycol is used for
de-icing or anti -icing operations, ethylene glycol shall also be sampled, analyzed, and reported. Ammonia shall be
monitored only if urea is used for de-icing. A Downstream location must be identified at a minimum of 50 feet and a
maximum of 150 feet from the outfall.
5. Acute Toxicity (Fathead, 24-hour) Monitoring, Annual. See Supplement to Effluent Limitations and Monitoring
Requirements Special Condition A. (10.). Acute toxicity monitoring shall be conducted during a discharge event at
the time of de-icing/anti-icing or during the next separate discharge event following de-icing/anti-icing.
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 5

Permit NCO084514
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [002]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 002 - (Bulk Fuel Facility and Glycol Storage Area). Such discharges
shall be monitored by the Permittee and limited as specified below:
' PARAMETER
LIMITS
. ,MONITORING
REQUIREMENTS .
Monthly ,,,,Daily.
'Average Maximum ``
Measurement
` . Fre uenc ,`
:Sample � , , Sample ;r
e-, _;Location
Flow
1
1 Effluent
Total Rainfall (inches)
1
Effluent
Event Duration (minutes)
1
Effluent
Total Suspended Solids (TSS)2
Quarterly
Grab Effluent
Oil and Grease4
45.0 mg/L
Annually3
Grab Effluent
Detergents (MBAS)
Annually3
Grab Effluent
pH
> 6.0 and < 9.0 standard units
Annually3
Grab Effluent
Benzenes
Quarterly
Grab Effluent
Xylenes
Quarterly
Grab Effluent
Toluenes
Quarterly
Grab Effluent
Ethylbenzenes
Quarterly
Grab Effluent
Total Nitrogen
(NO2N+ NO3N+ TKN)
Quarterly
Grab Effluent
Total Phosphorus
Quarterly
Grab Effluent
Propylene Glycol6
Bi -annual
Grab Effluent
Acute Toxicity?
Annual
Grab Effluent
Notes:
1. For each representative storm sampling event, the total precipitation, storm duration, and total flow must be
monitored. Total flow shall be either:
(a) measured continuously, or
(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 (this method of flow measurement should not be used for facilities with
large runoff -collection ponds); or
(c) estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. TSS - After the collection of eight consecutive samples, monitoring frequency will be reduced to one sample annually
unless the mean of the analytical results exceeds 100 mg/L or any one sample exceeds 150 mg/L.
3. The total number of samples during the permitting cycle shall reflect seasonable variability.
4. When possible the grab sample should be sldmmed from the surface of a quiescent (calm water) zone.
5. After collecting eight (8) consecutive BTEX samples, the Permittee may reduce the monitoring frequency to annually
only if no BTEX parameter is reported to exceed its respective water quality standard; and the Permittee may
discontinue BTEX monitoring only if no BTEX parameter is detected above its respective practical quantitation limit.
6. Propylene Glycol - After collecting four (4) consecutive samples, the sampling requirement may be discontinued if
the data show no values above the practical quantitation limit.
7. Acute Toxicity (Fathead, 24-hour) Monitoring, Annual [See Special Condition A. (10.)]. Acute toxicity monitoring
shall be conducted during a discharge event at the time of de-icing/anti-icing or during the next separate discharge
event following de-icing/anti-icing.
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 6

Permit NCO084514
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [003]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 003 - (West of Runway 5L -23R). Such discharges shall be monitored by
the Permittee and limited as specified below:
s
PARAMETER , f
�•
LIMITS:
MONIT�RING REQUIREMENTS N ` ,
_Mont h1y ` h Mail
•v.. y�
Aveia a Mauumum a
easttement am Ie�
,> Pre uenc ..,:..,ti eF...
as acat
o ��., s
Flow
1 1
Effluent
Total Rainfall (inches)
1
Effluent
Event Duration (minutes)
1
Effluent
Total Suspended Solids
Quarterly Grab
Effluent
Oil and Grease3
45.0 mg/L
Annually2 Grab
Effluent
Detergents (MBAS)
-
Annually2 Grab
Effluent
pH
> 6.0 and < 9.0 standard units
Annually2 Grab
Effluent
Benzene4
Annually2 Grab
Effluent
Xylene4
Annually2 Grab
Effluent
Toluene4
Annually2 Grab
Effluent
Ethylbenzene4
Annually2 Grab
Effluent
Total Nitrogen
(NO2N+ NO3N+ TKN)
Quarterly Grab
Effluent
Total Phosphorus
Quarterly Grab
Effluent
Dissolved Oxygen
5 Grab
Downstream
Propylene Glycol
5 Grab
Effluent
NH3 as N
5 Grab
Effluent
Acute Toxicity6
Quarterly Grab
Effluent
Notes:
1. For each representative storm sampling event, the total precipitation, storm duration, and total flow must be
monitored. Total flow shall be either:
(a) measured continuously, or
(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 (this method of flow measurement should not be used for facilities with
large runoff -collection ponds); or
(c) estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. The total number of samples during the permitting cycle shall reflect seasonable variability.
3. When possible the grab sample should be skimmed from the surface of a quiescent (calm water) zone.
4. After the collection of eight consecutive samples, monitoring frequency will be reduced to annually if no reported
value for any BTEX parameter exceeds the water quality standard for that parameter, and the sampling
requirement for the BTEX parameters will be discontinued if the data show no detections above the practical
quantitation limit for any of the compounds.
5. The Permittee shall monitor Propylene Glycol, Dissolved Oxygen and Ammonia during three (3) discharge
events each year (as available) at the time of de-icing/anti-icing or during the next separate discharge event after
de-icing/anti-icing. A discharge event is defined as the runoff from precipitation in the form of snow, sleet,
freezing rain or a rain event following a frost sufficiently heavy to require aircraft to be de-iced or anti -iced at the
airport. Propylene glycol shall be monitored in conjunction with Acute Toxicity monitoring. If ethylene glycol is
used for de-icing or anti -icing operations, samples for ethylene glycol shall also be analyzed and reported.
Ammonia shall be monitored only if urea is used for de-icing. A Downstream location must be identified at a
minimum of 50 feet and a maximum of 150 feet from the outfall.
6. Acute Toxicity (Fathead, 24-hour) Monitoring, Quarterly [See Special Condition A. (8.)]. The Permittee shall
monitor acute tonicity during the first four (4) discharge events at the time of de-icing/anti-icing, or during the
next separate discharge event following de-icing/anti-icing. After monitoring four (4) discharge events, the
Permittee may relax monitoring to once (1) annually following a de-icing/anti-icing event, or during the next
separate discharge event following de-icing/anti-icing.
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 7

Permit NCO084514
A. (4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [004]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 004 - (General Aviation Apron). Such discharges shall be monitored by
the Permittee and limited as specified below:
PA1l2AMETER"Monthly
y LIMITS
, MONITORING REQUIREMENTS
- �': Measurement` Sample Sampleu.'_-
Average Daily Maximums , .Frequency a ocation, _
Flow
1
1
Effluent
Total Rainfall (inches)
1
Effluent
Event Duration (minutes)
1
Effluent
Total Suspended Solids2
Quarterly
Grab
Effluent
Oil and Grease4
45.0 mg/L
Annually3
Grab
Effluent
Detergents (MBAS)
Annually3
Grab
Effluent
pH
> 6.0 and < 9.0 standard units
Annually3
Grab
Effluent
Benzene
Annually3
Grab
Effluent
Xylene
Annually3
Grab
Effluent
Toluene
Annually3
Grab
Effluent
Ethylbenzene
Annually3
Grab
Effluent
Total Nitrogen (NO2N+ NO3N+ TKN)
Quarterly
Grab
Effluent
Total Phosphorus
Quarterly
Grab
Effluent
Dissolved Oxygen
5
Grab
Effluent
Propylene Glycol
5
Grab
Effluent
NH3 as N
5
Grab
Effluent
Acute Toxicity6
Annual
Grab
Effluent
Notes:
1. For each representative storm sampling event, the total precipitation, storm duration, and total flow must be
monitored. Total flow shall be either:
a. measured continuously, or
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 (this method of flow measurement should not be used for facilities with
large runoff -collection ponds); or
c. estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. After the collection of eight consecutive samples, monitoring frequency will be reduced to one sample annually
unless the mean of the analytical results exceeds 100 mg/L or any one sample exceeds 150 mg/L.
3. The total number of samples during the permitting cycle shall reflect seasonable variability.
4. When possible the grab sample should be skimmed from the surface of a quiescent (calm Water) zone.
5. The Permittee shall monitor Propylene Glycol, Dissolved Oxygen and Ammonia during three (3) discharge
events each year (as available) at the time of de-icing/anti-icing or during the next separate discharge event after
de-icing/anti-icing. A discharge event is defined as the runoff from precipitation in the form of snow, sleet,
freezing rain or a rain event following a frost sufficiently heavy to require aircraft to be de-iced or anti -iced at the
airport. If, after collecting a minimum of six (6) samples over a minimum of two (2) consecutive seasons, dissolved
oxygen is not reported below 5 mg/L, the Permittee may reduce monitoring of dissolved oxygen and propylene
glycol to one (1) sample annually. If ammonia is not reported greater than or equal to 2 mg/L, ammonia may be
reduced to one (1) sample annually. Propylene glycol shall be monitored in conjunction with Acute Toxicity. If
ethylene glycol is used for de-icing or anti -icing operations, ethylene glycol shall also be sampled, analyzed, and
reported. Ammonia shall be monitored only if urea is used for de-icing.
6. Acute Toxicity (Fathead, 24-hour) Monitoring, Annual. See Supplement to Effluent Limitations and Monitoring
Requirements, Special Conditions A. (10.). Acute toxicity monitoring shall be conducted during a discharge
event at the time of de-icing/anti-icing or during the next separate discharge event following de-icing/anti-icing.
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 8

Permit NG40084514
A. (5) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [007]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 007 - (West of Runway 5L -23R). Such discharges shall be monitored by
the Permittee and limited as specified below:
PARAMETER
.
LIMITS
,r,`=MfJiITt}RING,REQITIREMENTS�a
°r
"'M onthly
Avera a
Daily i
Maximum `w .Fre#
f Measurement
,
uenc'
�Sgmpl
r erx
.n Sa riIe
Location' ;'
Flow
1
1
Effluent
Total Rainfall (inches)
1
Effluent
Event Duration
(minutes)
1
Effluent
Total Suspended Solids
Annually2
Grab
Effluent
Oil and Grease3
45.0 mg/L
Annually2
Grab
Effluent
Detergents (MBAS)
Annually2
Grab
Effluent
pH
> 6.0 and < 9.0 standard units
Annually2
Grab
Effluent
Total Nitrogen
(NO2N+ NO3N+ TKN)
Quarterly
Grab
Effluent
Total Phosphorus
Quarterly
Grab
Effluent
Dissolved Oxygen
4
Grab
Effluent
Propylene Glycol
4
Grab
Effluent
NH3 as N
4
Grab
Effluent
Acute Toxicity5
Quarterly
Grab
Effluent
Notes:
1. For each representative storm sampling event, the total precipitation, storm duration, and total flow must be
monitored. Total flow shall be either:
(a) measured continuously, or
(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 (this method of flow measurement should not be used for facilities with large
runoff -collection ponds); or
(c) estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. The total number of samples during the permitting cycle shall reflect seasonable variability.
3. When possible the grab sample should be skimmed from the surface of a quiescent (calm Water) zone.
4. The Permittee shall monitor Propylene Glycol, Dissolved Oxygen and Ammonia during three (3) discharge events
each year (as available) at the time of de-icing/anti-icing or during the next separate discharge event after de-
icing/anti-icing. A discharge event is defined as the runoff from precipitation in the form of snow, sleet, freezing rain
or a rain event following a frost sufficiently heavy to require aircraft to be de-iced or anti -iced at the airport.
Monitoring for these parameters shall begin with the commencement of passenger -aircraft operations influencing
discharges at Outfall 007, regardless of scheduled renovations at Terminal C (2). If, after collecting a minimum of six
(6) samples over a minimum of two (2) consecutive seasons, dissolved oxygen is not reported below 5 mg/L, the
Permittee may reduce monitoring of dissolved oxygen and propylene glycol to one (1) sample annually. If ammonia is
not reported greater than or equal to 2 mg/L, ammonia may be reduced to one (1) sample annually. If the data show
values for dissolved oxygen, propylene glycol and ammonia comparable to the values at Outfall 003, Outfall 007
shall be deemed to represent Outfall 003, and monitoring at Outfall 003 for these parameters may discontinue.
Propylene glycol shall be monitored in conjunction with Acute Toxicity. If ethylene glycol is used for de-icing or anti -
icing operations, ethylene glycol shall also be sampled, analyzed, and reported. Ammonia shall be monitored only if
urea is used for de-icing.
5. Acute Toxicity (Fathead, 24-hour) Monitoring, Quarterly [See Special Condition A. (9.)]. Monitoring for acute
toxicity shall begin simultaneously with the commencement of passenger -aircraft operations affecting Outfall 007
regardless of ongoing renovations at Terminal C (2). Acute toxicity monitoring shall be conducted during a
discharge event at the time of de-icing/anti-icing or during the next separate discharge event following de-
icing/anti-icing. If, after collecting five (5) consecutive samples, acute toxicity is not shown to exist, the Permittee
may reduce monitoring to once (1) annually [See Special Condition A. (10.)].
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 9

Permit NCO084514
A. (6) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [016]
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge stormwater from Outfall 016 - (RDU Maintenance Facility). Such discharges shall be
monitored by the Permittee and limited as specified below:
PARAMETER
-LIMITS-
'MONITORING REQUIREMENTS
Monthly ___,
Average
Daily
Maximum
Measurement ,:.;ample'
Fre uenc =, _ e ,. Location .=
Flow
1 1 Effluent
Total Rainfall (inches)
1 Effluent
Event Duration (minutes)
1 Effluent
Total Suspended Solids2
Quarterly Grab Effluent
Oil and Grease3
45.0 mg/L
Quarterly Grab Effluent
Benzene
Annually4 Grab Effluent
Xylene
Annually4 Grab Effluent
Toluene
Annually4 Grab Effluent
Ethylbenzene
Annually4 Grab Effluent
Total Nitrogen
(NO2N+ NO3N+ TKN)
Quarterly Grab Effluent
Total Phosphorus
Quarterly Grab Effluent
Acute Toxicity
Quarterly Grab Effluent
Notes:
1. For each representative storm sampling event, the total precipitation, storm duration, and total flow
must be monitored. Total flow shall be either:
(a) measured continuously, or
(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 (this method of flow measurement
should not be used for facilities with large runoff -collection ponds); or
(c) estimated by the measurement of flow at 20 -minute intervals during the rainfall event.
2. After the collection of eight consecutive samples, monitoring frequency will be reduced to one sample
annually unless the mean of the analytical results exceeds 100 mg/L or any one sample exceeds 150
mg/ L.
3. When possible the grab sample should be skimmed from the surface of a quiescent (calm Water)
zone. After the collection of eight consecutive samples, monitoring frequency will be reduced to
annually if no reported analytical results exceed 45 mg/L.
4. BTEX sampling shall be collected concurrent with Acute Toxicity monitoring. If, after collecting four
(4) consecutive samples for BTEX parameters, and if after these analyses show no detections above
the practical quantitation limit, the Permittee may discontinue sampling BTEX parameters at this
outfall.
5. Acute Toxicity (Fathead, 24-hour) Monitoring, Quarterly [See Special Condition A (8)]. If, after
collecting five (5) consecutive samples, acute toxicity is not shown to exist, the Permittee may reduce
monitoring to once (1) annually [See Special Condition A. (10.)].
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 10

Permit NCO084514
A. (7) Stormwater Monitoring Requirements/ Qualitative Monitoring
Qualitative monitoring requires an inspection of each stormwater outfall regardless of representative outfall
status and shall be performed as specified below in Table 1. Qualitative monitoring is 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. Qualitative monitoring of stormwater outfalls does not
need to be performed during a representative storm event.
„.n011lt011n
`
,„ I
,Fre uenc
amgleTYPe.._
:)<iOCat�Olt 2
Color
Semi -Annual
Visual
SDO
Odor
Semi -Annual
Visual
SDO
Clarity
Semi -Annual
Visual
SDO
Floating Solids
Semi -Annual
Visual
SDO
Suspended Solids
Semi -Annual
Visual
SDO
Foam
Semi -Annual
Visual
SDO
Oil Sheen
Semi -Annual
Visual
SDO
Other obvious indicators of stormwater pollution
Semi -Annual
Visual
SDO
Notes:
1. Qualitative Monitoring shall be conducted once in the spring (April - June) and once in the fall (September -
November).
2. Monitoring shall be performed at each stormwater discharge outfall (SDO) regardless of representative outfall status.
Stormwater outfalls are identified on the facility site map.
A. (8) ACUTE TOXICITY MONITORING- Quarterly (Outfall 003)
The permittee shall conduct quarterly toxicity tests using protocols defined as definitive in E.P.A. Document
EPA/600/4 - 90/027F 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. The Permittee shall monitor toxicity during four (4) discharge events at the time of de-icing/anti-
icing, or during the next separate discharge event following de-icing/anti-icing. Effluent samples for self-
monitoring must be obtained below all waste treatment. The tests will be performed on a discharge event
during each quarter (January -March, April -June, July -September, October -December).
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, DWQ Form AT -1 (original) is to be sent to the following
address:
Attention: NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate to 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 there be no discharge of flow from the facility during any month, the permittee will complete the
information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
Page 11

Permit NCO084514
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the
comment area of the form The report shall be submitted to the Environmental Sciences Section at the
address cited above
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
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT
Forms submitted
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 mvand test and will require
immediate follow-up testing to be completed no later than the last day of the month following the month of
the initial monitoring
A. (9) ACUTE TOXICITY MONITORING- Episodic (Outfalls 007, 016)
The permittee shall conduct acute toxicity tests using protocols defined as definitive in E P A Document
EPA/600/4 - 90/027F entitled Methods for Measuring the Acute Toxicity of Effluents to Freshwater and
Marine Organisms" The monitoring shall be performed as a Fathead Minnow (Rmephales promelas) 24-hour
static test Effluent samples for self-monitoring must be obtained below all waste treatment The Permittee
shall monitor toxicity during five (5) discharge events, samples to be taken at the time of de-icing/anti-icmg, or
during the next separate discharge event immediately following de-icing/anti-icing If, after monitoring these
required discharges, samples do not show toxicity, the Permittee may relax monitoring to one (1) test annually
[See Special Condition A. (10.)]
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, DWQ Form AT -1 (ongmal) is to be sent to the following
address
Attention NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, N C 27699-1621
Test data shall be complete and accurate to 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 and will require
immediate follow-up testing to be completed no later than the last day of the month following the month of
the initial monitoring
Page 12

Permit NCO084514
A. (10) ACUTE TOXICITY MONITORING - ANNUAL (Outfalls 001, 002, and 004)
The permittee shall conduct annual 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 (Rmephales promelas) 24-hour
static test Effluent samples for self-monitoring purposes must be obtained below all waste treatment The
permittee will conduct one test annually, with the annual period beginning in January of the calendar year
of the effective date of the permit The annual test requirements must be performed during a discharge event
at the time of de-icing/anti-icmg or during the next separate discharge event following de-icmg/anti-icing
The test result must be 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 as described above
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, DWQ Form AT -1 (original) is to be sent to the following
address
Attention Environmental Sciences Section
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, N C 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than
30 days after the end of the reporting period for which the report is made
Test data shall be complete and accurate to 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 there be no discharge of flow from the facility during any month, the permittee will complete the
information located at the top of the aquatic toxicity (AT) test form mdicatmg the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the
comment area of the form The report shall be submitted to the Environmental Sciences Section at the
address cited above
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
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such monitoring
shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms submitted
NOTE Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month following the month of
the initial monitoring
A. (11) STORMWATER POLLUTION PREVENTION PLAN
The permittee shall maintain the Stormwater Pollution Prevention Plan, herein after referred to as the Plan
The Plan shall be considered public information in accordance with Boilerplate Part II, Section E 10 of this
permit The Plan shall include, at a mmunum, the following items
Page 13

Permit NCO084514
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 regulated 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, and the
name of the receiving water(s) to which the stormwater outfall(s) discharges If the disclfarge
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 must be
shown
(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 (or series of maps) 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, the percentage of
each drainage area that is impervious For each outfall, a narrative shall describe the
potential pollutants expected to be present in the regulated 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 Boilerplate Part II, 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 mcorporate the following
(1) Feasibility Study 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 should consider covering
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) Secondary Containment A schedule to provide secondary containment for bulk storage of
liquid materials, storage of Section 313 of Title III of the Superfund Amendments and
Reauthorization Act (SARA) water priority chemicals, or storage of hazardous materials 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 lockmg mechanism] and any stormwater that accumulates in the containment area shall be
at a minimum visually observed 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) BMP Summary A narrative description 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 contributing
significant quantities of pollutants to stormwater discharges and data collected through
monitoring of stormwater discharges
Page 14

Permit NCO084514
(4) Inspection schedules of stormwater conveyances and controls and measures to be taken to
limit or prevent erosion associated with the stormwater systems.
c Spill Prevention and Response Plan (SPRP) The Spill Prevention and Response Plan shall
incorporate an assessment of potential pollutant sources based on a materials inventory of the
facility Facility personnel (or team) responsible for implementing the SPRP 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 The SPRP must be site stormwater specific Therefore, a SPCC plan may be a
component of the SPRP, but may not be sufficient to completely address the stormwater aspects of
the SPRP The common elements of the Spill Prevention Countermeasures and Containment Plan
(SPCC) with the SPRP may be incorporated by reference into the SPRP
d 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 minumum on
an annual basis onproper 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
contammate stormwater runoff Facility personnel (or team) responsible for umplementmg the
training shall be identified in the plan
f Responsible Parry 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 via a point source 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 modifymg the Plan to meet minimum requirements The permittee shall
provide certification in writing (in accordance with Boilerplate Part II, 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 A (9 ) Stormwater Monitoring Requirements/ Qualitative
Monitoring shall be performed in addition to facility inspections ,
Implementation Implementation of the Plan shall include documentation of all monitoring,
measurements, inspections, maintenance activities and training provided to employees, including the
log of the sampling data Activities taken to implement BMPs associated with the industrial activities,
including vehicle maintenance activities, must also be recorded All required 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
Page 15

Permit NC0084514
A. (12) STORMWATER 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 Water Quality
a If a facility has multiple discharge locations with substantially identical stormwater discharges that
are required to be sampled, the permittee may petition the Director for representative outfall status
If it is established that the stormwater discharges are substantially identical and the permittee is
granted representative outfall status, then sampling requirements may be performed at a reduced
number of outfalls
b Qualitative monitoring for color, odor, solids, foam, outfall staining, visible sheens and dry weather
flow shall be performed at all stormwater discharge outfall locations All qualitative monitoring shall
be documented and records maintained with the Stormwater Pollution Prevention Plan Qualitative
monitoring of stormwater outfalls does not need to be performed during a representative storm event
Qualitative monitoring will be performed twice per year, once in the spring (Apnl-June) and once in
the fall (September -November)
c Stormwater samples collected to meet the analytical monitoring requirements of this permit shall be
collected from a discharge resulting from a representative storm event (see Boilerplate Part II, Section
A), unless otherwise specified Failure to monitor storm events in accordance with the specified
frequency shall constitute a violation of this permit
d Detergents used outdoors shall be biodegradable _The pH of the discharge shall be in the range of 6
to 9 standard units
Analytical results from sampling during the final year of the permit term shall be submitted with the
permit renewal application
f This permit regulates washwater, noncontact cooling water, and stormwater discharges associated
with industrial activity Non-stormwater discharges allowable in the stormwater conveyance system
include
(1) All other discharges authorized by an NPDES permit
(2) Uncontaminated groundwater, foundation drams, air -conditioner condensate without added
chemicals, springs, waterline and fire hydrant flushing, water from footing drams, flows from
riparian habitats and wetlands
(3) Discharges resulting from fire -fighting or fire -fighting training
g If the storm event monitored and reported in accordance with this permit coincides with a non-
stormwater discharge, the permittee 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
h Glycol and Urea Usage The permittee shall be responsible for summarizing the amount of glycol (and
urea if applicable) dispensed each month for de-icing/anti-icing activities, and submit this data on
an annual basis This mformation shall be submitted with the February monthly DMR, covering the
previous calendar year
Page 16

RE: Revised DRAFT' NPDES Permit NCO084514 -Your review
Subject: RE: Revised DRAFT NPDES Permit NCO084514 - Your review
From: "Danison, Gina" <[e-mail]>
Date: Wed, 30 Apr 2008 08:24:16 -0400
To: "Joe Corporon" <Joe. Corporon @ ncmail.net>
Joe,
Before you finalize RDU's NPDES permit Co -Permittee list, please -
- Change Aircraft Management Group to Aviation Management Group
- Change Sky Chefs to LSG Sky Chefs
- Add Skytanking
Thank you,
Gina Danison
Environmental Program Officer
Raleigh-Durham Airport Authority
919-840-7741
P Before you print this email, consider the cost to the environment.
-----Original Message -----
From: Joe Corporon[mailto:[e-mail]]
Sent: Monday, April 28, 2008 8:33 AM
To: Danison, Gina
Subject: Revised DRAFT NPDES Permit NCO084514 - Your review
Gina - I have edited the draft permit considering your comments and also
updated the Facility Map (see attached PDF docs). Please call me as soon
as you can. We are about to issue the final permit including these
corrections.
1 of 1 4/30/2008 9:42 AM

nRDu
John C. Brantley, Airport Director
RALEIGH -DURHAM A I RPO R T AUTHORITY
1 0 0 0 Trade Drive • PO Box 8 0 0 0 1 • RDU Airport, NC 2 7 6 2 3
tel: [phone] • fax: [phone] • www.rdu.com
CERTIFIED MAIL: 7006 2150 0003 3594 7774
April 2, 2008
Attn: NPDES Permit Review
NC DENR- Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: NPDES Draft Permit
Permit No. NCO084514
Raleigh-Durham Airport
Wake County
To Whom It May Concern:
APR 12008
fiU1Y
For your consideration and review, enclosed are commen`Ts-mr-tWCabove referenced draft NPDES
permit. A summary of RDU's findings include: updated Co -Permittee list, clarification needed
for Acute Toxicity testing at Outfalls 007 and 016, incorrect references made in multiple
footnotes, and inconsistent page numbers. The detailed comments are attached as Exhibit A.
Also note that when the renovated section of Terminal G opens, the terminal will be renamed
Terminal 2. At this time Terminal A will be renamed Terminal 1. Please update the permit so
that any mention of Terminal A or Terminal C includes the new name, i.e. Terminal A(1) and
Terminal C(2).
If you have any questions, please feel free to contact me at 840-7741.
Sincerely,
� 1
6inatDa�nison
Environmental Program Officer
Raleigh-Durham Airport Authority
Enclosure
cc: Steve Pittman
WAKE COUNTY
DURHAM
RALEIGH
DURHAM COUNTY
Michael A. Weeks, Chairman
Robert D. Teer, Jr., Vice -Chairman
Kim D. Frazier, Secretary
Craigie D. Sanders
Terry K. Yearqan
Tonita F. Lipscomb, Treasurer
David T. Clancy
W. Stephens Toler

EXHIBIT A
Below are comments provided by the Raleigh-Durham Airport Authority regarding Draft
NPDES Permit NO. NCO084514
Co -Permittees
The list of Co -Permittees is out of date. A copy of Co -Permittees, current as of March 31,
2008, is included as Exhibit B.
Supplement to Permit Cover Sheet
Please change the description information on Outfall 002 to read, `Bulk Fuel Facility,
Glycol Storage".
Page 5 — A(1) Effluent Limitations & Monitoring Requirements — Outfall 001
Footnote #6 references "Special Condition A(9); however, Outfall 001 is not referenced
in that section. Outfall 001 is referenced in Special Condition A(10).
Paue 6 — A(2) Effluent Limitations & Monitorine Reauirements — Outfall 002
Please change the name description to, Outfall 002 — (Fuel Tank Facility and Glycol
Storage Area) to (Bulk Fuel Facility, Glycol Storage). Also, footnote #8 refers to Special
Condition A(9); however Outfall 002 is mentioned in Special Condition A(10).
Page 9 — Continuation of A(4) Effluent Limitations & Monitoring Requirements — Outfall
ki 004
vi
Footnote #7 refers to Special Condition A(9); however, Outfall 004 is not referenced in
that section. Outfall 004 is referenced in Special Condition A(10).
Pate 10 — Continuation of A(5) Effluent Limitations & Monitorine Requirements
Outfall
Footnote
007
Footnote #6 refers to Special Condition A(8); however, Outfall 007 is not referenced in_
that section. Outfall 007 is referenced in Special Condition A(9). Also, clarification is
needed on when Acute Toxicity sampling should commence. The Terminal C(2)
renovation is ongoing. Once the first half of Terminal C(2) is complete, the second half
ill begin renovations. Expected completion for the entire renovation of Terminal C(2) is
not anticipated until the year 2012. There is further conflicting data for Outfall 007, see
comments "Special Condition A(9)".
Page 11 — Continuation of A(6) Effluent Limitations & Monitoring Requirements —
SVOutfa11016
Footnote #5 refers to Special Condition A(8); however, Outfall 016 is not referenced in
that section. Outfall 016 is referenced in Special Condition A(9). There is further
JI commentary for Outfall 016, see comments "Special Condition A(9)".

EXHIBIT A
Page Numbering - Duplication of Page 12 subsequent miss -numbering
There are two Page 12s in the Draft NPDES Permit which RDU received. RDU has
repaginated the Permit so that there is only one page 12. Please note that any numerical
references made in comments by RDU, higher _ than page 11, are with the corrected
numberin
g•
cwv-,L-/V e S
5Special Condition A(9) - Pae 14 VW+,�-v� ` \,
This section states that Acute Toxicit tests be collected, "on at least 5 occasions du_ ria g
e first r followin h This conflicts with Footnote 6 , a e 10
Outfa 1 007. emaa om eresa Rodriguez states "the acute toxicity tests should be
a en an a arst 5 events." It is unclear when the five events are to occur - The first 5
discharge events? Three in 1st quarter, two in 4th quarter? One per quarter with which
quarter getting 2 samples? Also, no reference is made to the completion of renovation for
Terminal C(2). See previous comment: Page 10 - Continuation of A(5) Effluent
Limitations & Monitoring Requirements - Outfall 007. Please clarify when the five
samples are to be collected. Ms. Rodriquez's email is attached as Exhibit C.
2

6XI*B1T
Danison, Gina
From Teresa Rodriguez [teresa rodriguez@ncmad net]
Sent Thursday, March 20, 2008 10 09 AM
To- Danison, Gina
Subject Toxicity test
Gina, the acute toxicity tests should be taken in the first 5 events If you have any
questions regarding toxicity testing you can contact Susan Meadows at 743-8439
Teresa
1

AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.
Wake County. ) Ss.
PUBLIC NOTICE STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSIOWNPOES UNIT
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT
On the basis of thorough staff review and application of NC General Statute 143.215.1 and
15A NCAC 02H.0109 and other lawful standards and regulations; the North Carolina
Environmental Management Commission proposes to issue a National Pollutant Dis-
charge Elimination System (NPDES) wastewater discharge permit to the person(s)
listed below effective 45 days from the publish date of this notice.
Written comments regarding the Proposed permit will be accepted until 30 days after the
publish date of this notice. All comments received prior to that date are considered in the
final determinations regarding the proposed permit. The Director of the NC Division of
Water Quality may decide to hold a public meeting for the proposed permit, should the
Division receive a significant degree of public interest.
Copies of the draft permit and other supporting information on file used to determine
conditions present in the draft permit are available upon request and payment of the costs
of reproduction. Mail comments and/or requests for information to the NC Division of
Water Quality at The above address or call Dina Sprinkle [phone], extension 363 at the
Point Source Branch. Please include the NPDES permit number (below) in any
communication. Interested persons may also visit the Division of Water Quality at 512 N.
Salisbury Street, Raleigh, NC 27604-1148 between the hours of 8:00 a.m. and 5:00 p.m. to
review information on file.
Craven County Wood Energy has applied for renewal of the NPDES permit for its facility
northwest of New Bern (NC0075281).This facility is permitted to discharge up to 0.2 MGD
of non -contact cooling water and boiler blowdown from outfall 001 and stormwater from
outfall 002 into Bachelor Creek, a class C-Sw-NSW water in the Neuse River Basin.
Currently fluoride and phosphorus are water quality limited. This discharge may impact
future allocation of the resource.
Kinder Morgan Southeast Terminal, LLC (P.O. Box 18306, Greensboro, North Carolina
27419) has applied for renewal of NPDES permit N00032875 for the Selma Terminal 4 at
4086 Buffalo Road in Selma, North Carolina. This permitted facility discharges wastewa-
ter to an unnamed tributary to Mill Creek in the Neuse River Basin. Currently total
suspended solids and phenol are water quality limited. This discharge mayaffect future
allocations in this portion of Mill Creek.
Kinder Morgan Southeast Terminal, LLC (P.O. Box 18306, Greensboro, North Carolina
27419) has applied for renewal of NPDES permit NCO049204 for the Selma Terminal 1 at
2200 West Oak Street in Selma,. North Carolina. This permitted facility discharges
wastewater to an unnamed tributary to Mill Creek in the Neuse River Basin. Currently,
total suspended solids are water quality limited. This discharge may affect future
allocations in this portion of Mill Creek.
Mdgellon Terminals Holdings, L. P. (POB 22186, Tulsa, Oklahoma 74121-2186) has applied
for renewal of NPDES permit NCO052311 for the Selma Terminal. This permitted facility
discharges wastewater to an unnamed tributary to Mill Creek in the Neuse River Basin.
Currently total suspended solids, and oil & grease are water quality limited. This
discharge may affect future allocations in this portion of Mill Creek.
Kinder Morgan Southeast Terminal, LLC (P.O. Box 1830(, Greensboro, North Carolina
27419) has applied for renewal of NPDES Permit NCO076457 for the Selma Terminal 3 at
4383 Buffalo Road in Selma, North Carolina. This Permitted facility discharges wastewa-
ter to an unnamed tributary to Mill Creek in the Neuse River Basin. Currently, total
suspended solids are water quality limited. This discharge may affect future allocations in
this portion of Mill Creek
NPDES Permit Number NC0049034, Wake County General Services Administration -
Mount Auburn Sheriff Training Center, has applied for renewal of its permit discharging
treated wastewater to the unnamed tributary to White Oak Creek in the Neuse River.
Currently BODS, NH3-N, dissolved oxygen, fecal coliform bacteria and total :residual
chlorine are water quality limited. This discharge may affect future allocations in this
portion of the receiving stream. _
Aqua North Carolina, Inc. has applied for renewal of its NPDES permit number NCO060577
for the Beachwood WWTP in Wake County, The Permitted facility discharges treated
wastewater into the Neuse River in the Neuse River Basin. Currently, BOD, TSS, DO, PH,
ammonia, fecal coliform, and total residual chlorine are effluent or water quality limited.
This discharge may affect future allocations in this portion of the receiving stream.
Raleigh Durham Airport Authority, Permit Number NC0084514, has applied for renewal of
its permit discharging to an Unnamed Tributary to Brier Creek, Brier Creek Reservoir,
Unnamed Tributary to Sycamore, Creek, and an Unnamed Tributary to Haley's Creek in
the Neuse River Basin.
N&O: March 14, 2008
sero"dr
G
_ �Otary
Pu01\o 2
G ••
Before the undersigned, a Notary Public of Chatham
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared Debra
Peebles, who, being duly sworn or affirmed, according to law,
doth depose and say that she is Billing Manager -Legal
Advertising of The News and Observer a corporation
organized and doing business under the Laws of the State of
North Carolina, and publishing a newspaper known as The
News and Observer, in the City of Raleigh , Wake
County and State aforesaid, the said newspaper in which such
notice, paper, document, or legal advertisement was published
was, at the time of each and every such publication, a
newspaper meeting all of the requirements and qualifications
of Section 1-597 of the General Statutes of North Carolina and
was a qualified newspaper within the meaning of Section 1-
597 of the General Statutes of North Carolina, and that as such
she makes this affidavit; that she is familiar with the books,
files and business of said corporation and by reference to the
files of said publication the attached advertisement for NC
DIVISION OF WATER QUALITY was inserted in the
aforesaid newspaper on dates as follows: 03/14/08
Account Number: 73350833
the books and files of the aforesaid Co oration and publication.
Debra Peebles, Billing Manager -Legal Advertising
Wake County, North Carolina
Sworn or affirmed to, and subscribed before me, this
17 day of MARCH , 2008 AD ,by Debra Peebles.
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
UJanet Scroggs, Notary Public
My commission expires 14`s of March 2009.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No NCO084514
Summary
The Raleigh-Durham Airport Authority discharges stormwater runoff collected on airport runways and fueling
and maintenance areas The permit has monitoring requirements for seven outfalls See table I for the
description of those outfalls
Table I — Outfall description
Outfall
Facility Information , '
Receiving stream
Applicant/Facility Name
Raleigh Durham Airport Authority/ RDU Airport
Southwest of Runway 5L -
Applicant Address
P 0 Box 80001, RDU Airport, North Carolina 27623
"Facility Address
1000 Trade Drive, RDU Airport, North Carolina, 27623
Permitted Flow (MGD)
Flow is not limited
001
Type of Waste
Stormwater
truck loading area, vehicle fueling, light aircraft
Facility Classification
N/A
Permit Status
Renewal
Lon 780 48'24"
County
Wake
Drainage Structure S-620
Miscellaneous
Receiving Stream
Various, see outfall
table
Regional Office
RRO
Stream Classification
C- NSW, B -NSW
State Grid/ USGS Quad
East Durham
303(d) Listed?
No
Permit Writer
Teresa Rodriguez
Basin%Subbasin
Neuse / 030402
Date
3/10/2008
Summary
The Raleigh-Durham Airport Authority discharges stormwater runoff collected on airport runways and fueling
and maintenance areas The permit has monitoring requirements for seven outfalls See table I for the
description of those outfalls
Table I — Outfall description
Outfall
Location
Receiving stream
Activities
Southwest of Runway 5L -
25R
De-icing, anti -icing, vehicle washing, remote het fuel
001
UT Brier Ck
truck loading area, vehicle fueling, light aircraft
Lat 350 51'35"
maintenance, vehicle maintenance & washing
Lon 780 48'24"
Drainage Structure S-620
(catch basin before
Jet fuel storage (6 3 million gal ), glycol storage
002
reservoir)
Brier Creek
(60,000 gal), fueling, vehicle washing, maintenance,
Lat 350 52'08"
Reservoir
and car rental facilities
Lon 78° 48' 16"
West of Runway 5L -23R
Fueling from loading rack, vehicle and aircraft
003
Lat 350 52'38"
Beer Creek
fueling, vehicle and aircraft washing, de-icing, anti -
Reservoir
icing, vehicle maintenance
Lon 78° 48' 18"
General Aviation Apron
fueling, washing and maintenance,
004
Lat 35° 52'08"
LITVehicle/aircraft
Creek Sycamore
Cr
fuel storage, de-icing, anti -icing, O/W separator from
Lon 780 46' 16"
fuel storage area
South of Runway 5L -25R
(roadside ditch)
UT Sycamore
Treated stormwater from O/W separator on fuel
006
Lat 350 53' 08"
Creek
storage area
Lon 780 46'37"
West of runway
Brier Creek
De-icing, anti -icing, vehicle fueling, maintenance and
007
5L -23R
Reservoir
cleaning operations
Fact Sheet
NPDES NC0084514
Renewal
Page 1

Other requirements in the permit include the implementation of a Stormwater Pollution Prevention Plan, visual
qualitative monitoring at eight stormwater discharge outfalls, and a yearly report summarizing the amount of
glycol and urea used at the airport
Data Review
Data from was reviewed for 2005 through 2007
Outfall
Lat 350 53' 02"
PH
This outfall will serve as a representative outfall for
Total
Total
Oil &
the discharge from drainage basin 014
P
Lon 780 47'46"
001
(MGD)
(s u)
Maintenance facility
to
Nitrogen
Phosphorus
016
Lat 51' 59"
Haley's Creek
Vehicle maintenance, vehicle and equipment fueling,
fuel storage, and urea storage
(mg/1)
Lon 780 46' 53"
(mg/1)
Other requirements in the permit include the implementation of a Stormwater Pollution Prevention Plan, visual
qualitative monitoring at eight stormwater discharge outfalls, and a yearly report summarizing the amount of
glycol and urea used at the airport
Data Review
Data from was reviewed for 2005 through 2007
Outfall
Flow
PH
TSS
Total
Total
Oil &
DO*
P
E
001
(MGD)
(s u)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
Glycol*
Glycol*
(mg/1)
(mg/1)
(mg/1)
(mg/1)
(mg/1)
Average
21
77
2345
1 2
0 144
< 5
89
424
379
Max
936
86
880
1 96
029
< 5
1176
856
986
Min
024
68
21
049
<05
<5
51
51
118
* Sampling only required during anti -icing or de-icing events
Toxicity — Annual monitoring is required, three toxicity tests were performed at this outfall with results of
>100%
BTEX — All parameters were less than detection
Outfall
Flow
PH
TSS
Total
Total
Oil &
DO*
P
E
002
(MGD)
(s u)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
Glycol*
Glycol*
(mg/1)
(mg/1)
(mg/1)
(mg/1)
(mg/1)
Average
1 11
73
59
2
06
7
96
<1
<1
Max
533
81
154
42
1 39
7
96
147
327
Min
014
75
10
1 1
02
<5
96
<1
<1
* Sampling only required during anti -icing or de-icing events
Toxicity — Annual monitoring is required, three toxicity tests were performed at this outfall with results of
>100%
BTEX — Toluene was detected once at 8 4 ug/I
Outfall
Flow
PH
TSS
Total
Total
Oil &
DO*
P
E
003
(MGD)
(s u)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
Glycol*
Glycol*
(mg/1)
(mg/1)
(mg/1)
(mg/1)
(mg/1)
Average
23
75
31
2
03
<5
89
28
173
Max
11 5
82
59
54
1 5
<6
122
67
572
Min
029
68
12
07
008
<5
5
<1
25
* Sampling only required during anti -icing or de-icing events
Toxicity — Quarterly monitoring is required Nine toxicity tests were performed at this outfall with 8 results of
>100% and one at 70%
BTEX — Xylene was detected once at 2 ug/I
Fact Sheet
NPDES NC,0084514
Renewal
Page 2

Outfall
Flow
PH
TSS
Total
Total
Oil &
DO*
P
E
004
(MGD)
(s u)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
Glycol*
Glycol*
24
12
008
<5
(mg/1)
(mg/1)
(mg/1)
23
(mg/1)
(mg/1)
Average
1 9
76
51
09
016
<5
98
64
10
Max
92
81
127
1 6
025
<6
11 3
248
16
Min
024
7
4
006
<0 05
<5
91
<1
<1
* Sampling only required during anti -icing or de-icing events
Toxicity — Annual monitoring is required Three toxicity tests were performed at this outfall with results of
>100%
BTEX — All parameters were less than detection
Outfall
Flow
PH
TSS
Total
Total
Oil &
DO*
P
E
007
(MGD)
(s u)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
Glycol*
Glycol*
24
12
008
<5
(mg/1)
(mg/1)
(mg/1)
23
(mg/1)
(mg/1)
Average
1 5
82
54
1 8
01
<5
79
<8
<1
Max
66
89
119
74
02
<6
103
22
<1
Min
02
73
4
06
<0 03
<5
46
<1
<1
* Sampling only required during anti -icing or de-icing events
Toxicity — Episodic monitoring is required Seven toxicity tests were performed at this outfall with results of
>100%
Outfall
Flow
TSS
Total
Total
Oil &
016
(MGD)
(mg/1)
Nitrogen
Phosphorus
Grease
(mg/1)
(mg/1)
(mg/1)
Average
044
24
12
008
<5
Max
206
90
23
013
78
Min
005
58
04
<0 05
<5
Toxicity — Episodic monitoring is required Eight toxicity tests were performed at this outfall with results of >
100%
BTEX — All parameters were less than detection
Basin Plan/303(d) Subbasin 03-04-02 is a highly populated and growing area in the Neuse River Basin
The drainage areas from Brier Creek and Haleys Creek drain to Crabtree Creek in Umstead Park where the
creek is classified as supporting High turbidity is a concern for Lake Crabtree
Proposed permit modifications
• Outfall 003 — Reduce monitoring frequency for Benzene, Xylene, Toluene and Ethylbenzene to Annually
All the sampling results were reported as less than detect for these four parameters
• The list of co -permittees was updated to reflect current information
Fact Sheet
NPDES NC0084514
Renewal
Page 3

PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice March 12, 2008
Permit Scheduled to Issue May 5, 2008
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact Teresa
Rodriguez at [phone] ext 553
NAMES �'YxtDATE
REGIONAL OFFICE COMMENTS
NAME
DATE
SUPERVISOR DATE
Fact Sheet
NPDES NCO084514
Renewal
Page 4

Raleigh Durham International Airport NPDES Permit No.
N CO084514 nw
Drainage Basin: Neuse River Quad: East Durham/Cary Wake County Facility Location
Sub -basin: 030402 North not to scale
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'nRDu
John C. Brantley, Airport Director
August 28, 2007
RALEIGH-DURHAMA I R PORT AUTHORITY
1 0 0 0 Trade Drive - PO Box 8 0 0 0 1 - RDU Airport, NC 2 7 6 2 3
tel: [phone] - fax: [phone] - www.rdu.com
Frances Candelaria
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Point Source Branch (� (} M
1617 Mail Service Center �' �J
Raleigh, North Carolina 27699-1617 D
AUG 3
Subject: Raleigh-Durham Airport Authority
NPDES Permit No. NCO084514 (Wake County) DENR - WATER QUALITY
Application for Permit Renewal POINT SOURCE BRANCH
Dear Ms. Candelaria:
The Raleigh-Durham Airport Authority requests renewal of NPDES Permit No. NC0084514,
which allows discharges to surface waters at the Raleigh-Durham International Airport.
Enclosed please find an original and two copies of an application to renew the permit. In
addition to this cover letter, this permit renewal application includes a completed application
form (Short Form C - MI), attachments to Short Form C - MI, a sludge management plan, and
a summary of changes since issuance of the previous NPDES Permit. An original and two
copies of the application are enclosed.
The currently authorized NPDES Permit (NC0084514) allows discharge of primarily
stormwater to surface waters on the site through thirty-nine outfalls. The permit requires
monitoring at six representative outfalls as follows:
■ Outfall 001
■ Outfall 002
■ Outfall 003
■ Outfall 004
■ Outfall 007
■ Outfall 016
Attachment A to Short Form C - MI contains an updated list of co -permittees for this permit.
Tenants at the Raleigh-Durham International Airport have been included in the permit as co -
permittees since the initial issuance of this permit, and the Raleigh-Durham Airport Authority
requests that these entities be listed as co -permittees for this reissuance of the permit, because
they share responsibility for compliance with the conditions of the permit.
WAKE COUNTYDURHAM
RALEIGH
DURHAM COUNTY
Michael A. Weeks, Chairman
Robert D. Teer, Jr., Vice -Chairman
Kim D. Frazier, Secretary
Craigie D. Sanders
Terry K. Yeargan
Tonita F. Lipscomb, Treasurer
David T. Clancy
W. Stephens Toler

I � y
Frances Candelaria
August 28, 2007
Page 2
A summary of changes that have been made at the facility since issuance of the last NPDES
Perrrut is attached The updated list of co -permittees is included in Attachment A to Short
Form C - MI
If you have any questions about this permit renewal application or need additional
information, please contact Mr Tim Grant of CDM at [phone] or me at [phone]
Thank you for your assistance
Very truly yours,
Steven M Pittman, P E
Deputy Airport Director - Facilities Engineering & Maintenance
Raleigh-Durham Airport Authority
Enclosures Sludge Management Plan
Summary of Changes since Issuance of Previous Permit
NPDES Permit Application Short Form C - MI
Attachment A - List of Co -Permittees
cc File
Attachment B - Topographic Map
Attachment C - Drainage Basin Map
Attachment D - Effluent Data
Attachment E - Significant Spill Report Summary

Raleigh-Durham Airport Authority
NPDES Permit NCO084514
Attachment A to Short Form C -MI
Permit NC0084514
List of Co -Permittees
ABX Air
Jetcraft
Air Canada
Landmark Aviation
Aircraft Management Group (AMG)
Martin Marietta
AirTran Airways
Mesa Airlines
Alamo Rent-A-Car
National Rent-A-Car
American Airlines
NCDOT — Division of Aviation
American Eagle
Northwest Airlines
Avis Rent-A-Car
Progress Energy
BAX Global
Quantem Aviation
Budget Rent-A-Car
Ram Air
Charter Express
SAS
Colonial Pipeline
Sheetz
Continental Airlines
Sky Chefs
Delta Air Lines
Southern Jet
Dollar Rent-A-Car
Southwest Airlines
Elite Line Service
Thrifty Car Rental
Enterprise Rent-A-Car
United
Expressjet
United Parcel Service
Federal Express
UPS Supply Chain Solutions
Gregory Poole Equipment Co
USAirways
Hertz Corporation
Worldwide Flight Services
Jet Blue