NCS000508_FINAL PERMIT_20100604

STORMWATER DIVISION CODING SHEET
NCS PERMITS
PERMIT NO.
f\,J�, 5o�-
DOC TYPEFINAL
PERMIT
MONITORING REPORTS
❑ APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑ -Lbi () 06 .1
`1
YYYYMMDD

NC®[iQ��
'North Carolina.Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Kevin J. Baker
Piedmont Triad Airport Authority
PO Box 35445
Greensboro, NC 27425
Dear Mr. Baker:
Division of Water Quality
Coleen H. Sullins
Director
June 4, 2010
Dee Freeman
Secretary
Subject: Final NPDES Stormwater Permit
Permit NCS000508
Piedmont Triad International Airport
Guilford County
In response to your renewal application for continued coverage under NPDES stormwater permit
NCS000508, the Division of Water Quality (DWQ) is forwarding herewith the subject state - NPDES
permit. This pernut 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 (EPA) dated October 15, 2007 (or as subsequently amended).
This final permit includes a number of significant changes from the draft permit sent to you on
January 13, 2010 including:
• Incorporation of comments as described in the March 15, 2010 letter sent to Mr. George
House;
• Modification to the Tiered Response system as proposed by tine May 7, 2010 letter received
from Mr. Bill Cooke;
Revised effective data and monitoring schedule.
The comments received with Mr. Cooke's May 7, 2C50 letter, in addition to those heard at the March
29,. 2G10 meeting between DWQ and P.TAA, were thoroughly reviewed and carefully considered prior
to finalization of the permit. The comments served to further our understanding of PTAA's concerns
with the permit's requirements and the rationale behind some of the proposed changes. The
following section contains our responses to Mr. Cooke s letter and addresses the two requested permit
modifications.
1. Modification of the Tiered Res )onse ystem ,
The proposed modifications to the Tiered Response system were accepted with the minor insertion of
"causing or contributing to" language in two places in the second paragraph of the last box. We feel
Wetlands and Stonwater Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: wm.mvaterquality.org
An Emial Onoortunity 1 Affrmalive Action Emnlover
Noi thCarolina
Naturally

Mr. Kevin Baker
Piedmont Triad Airport Authority
Permit No. NCS000508
the modifications, as incorporated, capture the intent of our original Tier Response write-up and do so
in a manner that is more clearly defined and agreeable to both PTAA and DWQ.
2. Elimination of BOD/COD Benchmark Values for De-icing Events
This proposed change was not incorporated into the final permit. Each argument supporting this
change is addressed individually.
a. Low Volume of Glycol Use: While the total volume of glycol used is less than EPA's MSGP
criterion of 100,000 gal/yr, 25,000 gallons of annual glycol use still presents a significant
concern from a water quality perspective givoti the considerable oxygen demand exerted
by de-icing compounds. PTIA is one of the largest users of de-icing fluids among all
permitted airport facilities under our prc:kram. Thus, removal of benchmark values based
on volume usage is not warranted.
b. Intermittent Use: This argument contends that glycol use at PTIA is sporadic and not
representative of typical discharge and that impacts to the receiving stream are short-lived.
It is agreed that de-icing is an episodic activity. The duration of impacts to water quality
has not been adequately established to assess the nature of impacts as short-lived.
Intermittent use of glycol de -Jeers alone is not supportive of BOD/COD benchmark
removal.
c. Absence of Correlation between BOD and DO in. Analytical Results: At this time we do not
feel that the data collection, reporting, or interpretation is sufficiently consistent or robust
to support this argument for the removal of BOD/COD benchmark concentrations:. More
so, even if analytical data were to show, limited effect on•nstream DO by the introduction
of BOD, this relationship or lack t�iereof, would not diminish DWQ's concern about the
introduction of oxygen -consuming pollutsn,,; to the receiving streams. Our program's
focus is the elimination of pollutant discharges, and part of that process is to place
benchmark values, where available and applicable, to assist in the management of
pollutant discharges. To that effect, both BOD/COD monitoring (with benchmark
concentrations),at oritfall locations and DO monitoring instream are useful and warranted
in the final permit.
d. Limited Downstream Impact: This point argues that glycol travels a relatively short period
of time before emptying into Lake Higgins and Lake Brandt where substantial dilution
occurs. We are unable to accept dilution as a compelling argument to remove the
benchmark value for a parameter of concern. We agree that analytical data downstream
show generally high DO concentrations as expected during cold -weather months but do
not have enough comparable data to make an assessment of glycol impacts. 11 was noted
on the five dates that DO was monitored both upstream at PTIA and downstream in
Horsepen Creek, significant variation in DO levels was observed ranging from 1.5 mg/L -
9.0 mg/L between the average of the upstream sites and the downstream Greensboro -
monitored site. As such, we are unable to withdraw benchmark concentrations from the
associated oxygen demand monitoring based on downstream test results.
e. Retention of DO Benchmark Value as Appropriate Measure of Impacts: Based on historical
results, we do not anticipate that compliance with the DO benchmark value or water
quality standard will be problematic for PTAA. Furthermore, with modifications to the

Mr. Kevin Baker
Piedmont Triad Airport Authority
Permit No. NCS000508
Tier language as proposed by PTAA and incorporated by DWQ with minor additions,
futic+:e DWQ response actions associated with the last box of the Tiers including the
structural controls that PTAA has expressed monetary concerns about will be focused on
those, "...as may be.necessary to prevent the permittee's discharge from causing or
contributing to.any violation of water quality standards...".
I. Existing Control Strategy: We acknowledge and appreciate the considerable effort and
investment by PTAA to minimize unnecessary glycol discharges through carrier and
personnel training, implementation of an SPCC Plan, and particularly, the Federal Express
collection system.
g. Cost to Eliminate Discharge: The estimated cost of constructing containment systems at
each end of Runway 5L/23L t.-) eliminate all glycol discharge was reviewed and at this time
appears unwarranted.
h. De-icing is Required for Aircraft Safety: DWQ agrees that de-icing procedures are an
integral part of PTAA's goal to ensure aircraft safety during cold -weather months. Our
goal is to not to restrict or hamper this safety measure but to minimize potential impacts
and protect water quality. We feel that our goals are not mutually exclusive and pledge to
work with PTAA on this issue should difficulties arise.
DWQ appreciates the thoroughness and level of detail provided in all correspondence from PTAA
throughout the permit renewal process. We also commend you on your past and present
commitment to comply with permit requirements and look forward to assisting PTAA in the future
maintain this valued record of cooperation.
If any payts,,measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right -to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611 -7447. Unless such
demand is made, this decision shall be final and binding.
This permit does not affect the legal requirements to obtain other pernnits which may be required by
the Division of Water Quality or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have,any questions or comments concerning �lnis permit, contact Cory Larsen at [phone]
or co ry.larsenCncdenr.gov or Ken Pickle at [phone] or [e-mail].
Sincerely, o ,
for Coleen H. Sullins, Director

Mr. Kevin Baker
Piedmont Triad Airport Authority
Permit No. NCS000508
cc: Mr. Corey Basinger, Winston-Salem Regional Office
Mr. Bill Cooke, Cooke & Cooke, LLP,100 South Elm St, Greensboro, NC 27401
Mr. George House, Brooks, Pierce, McLendon, Humphrey & Leonard, LLP, PO Box 26000,
Greensboro, NC 27420
Mr. Mike Mitchell, EPA Region IV
Stormwater Permitting Unit
Central Files
Attachments
1
4
f
C

NCS000508
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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,
PIEDMONT TRIAD AIRPORT AUTHORITY
is hereby authorized to discharge stormwater from a facility located at
Piedmont Triad International Airport
6415 Bryan Blvd.
Greensboro, NC
Guilford County
to receiving waters designated as Brush Creek, Horsepen Creek, and East Fork Deep River, class
WS-III; NSW and WS-IV streams in the Cape Fear River Basin, in accordance with the
discharge limitations, monitoring requirements, and other conditions set forth in Parts I, II, III,
IV, V and VI hereof.
This permit shall become effective July 1, 2010.
This permit and the authorization to discharge shall expire at midnight on June 30, 2015.
Signed this day,the 4°i of June , 2010.
for Coleen H. Sullins Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NCS000508
TABLE Or CONTENTS
PART I INTRODUCTION
Section A: Individual Permit Coverage
Section B: Permitted Activities
Section C:. Location ;Map
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES
Section A: Stormwater Pollution Prevention Plan
Section B: Routine Analytical Monitoring Requirements
Section C: Qualitative Monitoring Requirements
Section D: De -Icing Event Analytical Monitoring Requirements
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL
PERMITS
Section A: Compliance and Liability
1. Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
5. Oil and Hazardous Substance Liability
6. Property Rights
7. Severability
8. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
Section B: General Conditions
1. Individual Permit Expiration
2. Transfers
i

Permit No. NCS000508
3. Signatory Requirements.
4. Individual Pennit Modification, Revocation and Reissuance, or
Tennination
5. Pen -nit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Stonnwater Control Facilities
Section D:
Monitoring and Records
I. Representative Sampling
2. Recording Results
3. Flow Measurements
4. Test Procedures
5. Representative Outfall
6. Records Retention
7. Inspection and Entry
Section E:
Reporting Requirements
1. Discharge Monitoring Reports
2. Submitting Reports
3. Availability of Reports
4. Non-Stonnwater Discharges .
5. Planned Changes
6. Anticipated Noncompliance
T. Spills
8. Bypass
9. Twenty-four Hour Reporting
10. Other Noncompliance
11. Other Information
PART IV
LIMITATIONS REOPENER
PART V
ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI
DEFINITIONS and SPECIAL CONDITIONS
ii

Permit No. NCS000508
PART I INTRODUCTION
SECTION A: INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee and co-pennittees listed on the following page are authorized to discharge stormwater
associated with industrial activity:., Such discharges shall be controlled, limited and monitored as
specified in this permit. Discharges covered in this permit are the stormwater discharges from
the current airport operations (001 through 066) as well as additional stormwater discharge
points that may be created by further modification or expansion of airport operations.
Current discharges 001 through 012 and 038 through 040 discharge to Horsepen Creek. Current
discharges 013 through 019 discharge to East Fork Deep River. Current discharges 020 through
037 and 041 through 066 discharge to Brush Creek.
SECTION B: PERMITTED ACTIVITIES
Until this pen -nit expires or is modified or revoked, the permittee and co-pennitces are authorized
to discharge stormwater to the surface waters of North Carolina or separate stone sewer system
that has been adequately treated and managed in accordance with the terns and conditions of this
individual permit. All stormwater discharges shall be in accordance with the conditions of this
permit.
Any other point source discharge to surface waters of the state is prohibited unless it is an
allowable non-stormwater discharge or is covered by another permit,' authorization, or approval.
Stormwater discharges allowed by this individual permit shall not cause or contribute to
violations of Water Quality Standards.
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.
Part I Page 1 of

Permit No. NCS000508
Co-Permittees
Alamo/National Car Rental
Jetstream Ground Services, Inc.
Allegiant Air
Koury Aviation
American Eagle
Landmark Aviation
Atlantic Aero
Lincoln Financial
Aviation Repair Technologies
Marriot Hotel
Avis Rent A Car
Northwest Airlines
Budget Rent a Car
Piedmont Triad Airport Authority
Carolina Aircraft
Piedmont Triad ARFF Station/Connnand Ctr.
Cessna Citation Service Center
Premier Transportation
Champion Cartage
Prime Flight Services
Chatauqua Airlines
Quantem Aviation Services, Inc.
COMAIR Hangar
Quickilight Services
Continental Airlines
Smartecarte
Delta Airlines
T1MCO
Delta Global Services
Tradewinds
DHL
Triad Transportation
Dollar/Thrifty Rental Car
United Express
Enterprise Rental Car
United Parcel Service
FAA
US Airways
FedEx
US Postal Service
GTCC Aviation Center
USA Parking Valet
Hertz Rent A Car
V F Corporation
Honda Aircraft Company
Worldwide Flight Services
Jetstream Air, LLC
PanI Pagc2of2

SECTION C: LOCATION MAP PemiitNo. NCS000508
NCS000508
hip Scale 1:30,000
Piedmont Triad Airport Authority
Piedmont Triad International Airport
Lab Jude: 360 06' 24" N
Longitude: 790 56' 31" W
Count/: Guilford
Receiving Streams: Horsepen Cr, Brush Cr, E Fork Deep R
Stream Class: WS-III; NSVU, WS-III; NSW, VVS,IV
Sub -basin: 03-06-02 (Cape Fear River Basin)
L
o. n .r��''',,,���rrr���sf'
7i� 1l ng.
Facility Location

Pennit No. NCS000508
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
'gyp i -r ,=tt:'•=;�, •,.,,
SECTION A: STORMWATER POLLUTION PREVENTION PLAN
The Pennittee shall develop a Stonnwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part Ill, Standard
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
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
stonnwater discharges. The site plan shall contain the following:
(a) 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 stonnwater
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. The general location
" :.. :map (or alternatively the site map) shall identify whether each receiving water is
impaired (on the state's 303(d) list of impaired waters) or is located in a
watershed for which a TMDL has been established, and what the parameter(s)
of concern are. .
(b) A narrative description of storage practices, loading and unloading activities,
outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices: A narrative description of the potential pollutants which
could be expected to be present in the stormwater discharge from each outfall.
(c) ., A site map drawn to scale (including a distance legend)' showing: the site property
boundary, the stonnwater discharge butfalls, all on -site and adjacent surface
waters and wetlands, industrial activity areas, (including storage of materials,
disposal areas, process areas, loading and unloading areas, and haul roads), site
topography, all drainage features and structures, drainage areas for each outfall,
direction of flow in each drainage area, industrial activities occurring in each
drainage area, buildings, existing BMPs, and impervious surfaces. The site map
must indicate the percentage of each drainage area that is impervious.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the three (3) previous years and any corrective actions taken to mitigate
spill impacts.
(e) Certification that the stonnwater outfalls have been evaluated for the presence of
non-stornrwater discharges. The certification statement will be signed in
Part 11 Page t of 13

Pennit No. NCS000508
accordance with the requirements found in Part III, Standard Conditions, Section
B, Paragraph 3. The permittee shall re -certify annually that the stormwater
outfalls have been evaluated for the presence of non-stormwater discharges.
2. 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
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility Study. A review of the technical and economic feasibilit., of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater. Wherever practical, the pennittee shall
prevent exposure of all storage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is
not practical, the stonnwater management plan shall document the feasibility of
diverting the stonnwater runoff away from areas of potential contamination.
(b) Secondary Containment Requirements and Records.. Secondary containment is
required for: bulk storage of liquid materials; storage in any amount of Section
313 of Title III of the Superfund Amendments'and Reauthorization Act (SARA)
water priority chemicals; and. storage in any amount of hazardous substances; in!
order to prevent leaks and spills from contaminating stonnwater runoff. A table
or summary of all such tanks and stored materials and their associated'secondary
containment areas shall be maintained. If the secondary containment devices are
connected to stormwater conveyance systems, the connection shall be controlled
by manually activated valves or other similar devices (which shalfbe secured
closed with a locking mechanism), and any stormwater thataccuinulates in the
containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stonnwater. Accumulated stonnwater shall be released if found to be
uncontaminated by any material. Records documenting the individual making the
observation, the description of the accumulated stonnwater, and the date and time
of the release shall be kept for a period of five years.
(c) BMP Summary. A listing of site structural and non-structural Best Management
Practices (BMP) shall be provided. The installation and implementation of BMPs
shall be based on the assessment of the potential for sources to contribute
significant quantities of pollutants to stormwater discharges and data collected
through monitoring of stormwater discharges. The BMP Summary shall include a
written record of the specific rationale for installation and implementation of the
selected site BMPs. The BMP Summary shall be reviewed and updated annually.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or the team) responsible for implementing
Part It Page 2 of 13

Pcnnit No. NCS000508
the SPRP shall be identified ma written list incorporated into the SPRP and signed and
dated by each individual acknowledging their responsibilities for the, plan. A responsible
per son 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 stonnwater specific. Therefore, an oil Spill
Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP,
but may not be sufficient to. completely address the stonnwater aspects of the SPRP. The
common elements of the SPCC with the SPRP may be incorporated by reference into the
Snp.
4. Preventative Maintenance and Good Housekeeping. Program. A preventative
maintenance and good housekeeping program shall be developed. The program shall list
all stonnwater control systems, stonnwater discharge outfalls; all on -site and adjacent
surface waters and wetlands, industrial activity areas (including material storage areas,
material handling areas, disposal areas, process areas, loading and unloading areas, and
haul roads), all drainage features and structures, and existing structural BMPs. The
program shall establish schedules of inspections, maintenance, and housekeeping
activities of stonnwater control systems, as well as facility equipment, facility areas, and
facility systems that present a potential for stonnwater exposure or stonnwater pollution.
Inspection of material handling areas and regular cleaning schedules of these areas shall
be incorporated into the program. Timely compliance with the established schedules for
inspections, maintenance, and housekeeping shall be recorded in writing and maintained
in the SPPP.
5. Employee Training. Training programs shall be developed and training provided at a
minimum on an annual basis for facility personnel with responsibilities for: spill response
and cleanup, preventative maintenance activities, and for any of the facility's operations
that have the potential to contaminate stonnwater runoff. Facility personnel (or team)
responsible for implementing the training shall be identified, and their annual training
shall be documented by the signature of each eriiployee trained.
6. Responsible Party. The Stonnwatcr 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 assignments provided.
a„
7. Plari 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. All aspects of the
Stormwater'Pollution Prevention Plan shall be reviewed and updated on an annual
basis. The annual update shall include an updated list of significant spills or leaks of
pollutants for the previous three years, or the notation that no spills have occurred. The
annual update shall include written re -certification that the stonnwater outfalls have been
evaluated for the presence of non-stonnwater discharges.! Each annual update shall
include a documented re-evaluation of the effectiveness of the BMPs listed in the BMP
Summary of the Stonnwatcr Management Plan.
Part 11 Page 3 of 13

PCnnit No: NCS000508
0
The Director may notify the permitter 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 pennittee, shall provide certification in writing (in accordance with
Part III, Standard Conditions, Section B, Paragraph 3) to the Director that the changes
have been made.
K. Facility Inspections. Inspections of the facility and all"stonmvater systems shall occur as
part of the Preventative Maintenance and Good Housekeeping Program at a minimum on
a semi-annual schedule, once during the first half of the year (January to June), and once
during the second half (July to December), with at least 60 days separating inspection
dates (unless performed more frequently than semi-annually). These facility inspections
are different from, and in addition to, the stormwater discharge characteristic monitoring
required in Part lI B and C of this permit.
9. implementation. The pennittee shall implement the Plan. hnplementation 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 and.
of actions 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 the Director's authorized representative
immediately upon request.
Part Il .. Page 4 of 13

Permit No. NCS000508
SECTION B: ROUNTINE ANALYTICAL MONITORING REQUIREMENTS
}
Routine analytical monitoring of storinwater discharges,shall be performed at each selected
representative storinwater discharge outfall (SDO), as noted in Table 1, and as specified in
Table 2. All routine analyticaf monitoring shall be performed during a representative storm
event.
Table 1. Representative Outfall Identification
;;Represehtative2SD0
r Re `resentntive of,'O"utfalls.
004
003, 004, 005, 008, 013, 017, 018, 019, 020, 038, 03"-
006
006, 007, 016
016A
009, 010, 011, 012, 014, 015, 016A, 021, 022, 023
024 and 026
001, 002, 024, 025, 026
027
027, 02S
030
029, 030, 031,.062, 063, 064, 065, 066, .
033
032, 033, 034, 035, 036, 037
A representative storm event is a storm event that measures greater than 0.1 inches of rainfall. The time
between this storm event and the previous storm event measuring greater than 0.1 inches must beat least
72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours. .
Part II Page 5 of 13

Permit No. NCS000508
Table 2. Routine Analvtieal Monitoring Renuirements nt Renrecentgtive 61n4fgllc
Dts`ch�rge . `..
Cha"racteristics'' `
Unrts
Measurement Frequency)
t
'Sample
'Ty`"ez
,Sample ,.
Locatttin3"
Total Suspended Solids
mg/L
Quarterly
Grab
SDO
Biochemical Ox =en Demand
mg/L
Quarterly
Grab
SDO
Chemical Oxygen Demand
mg/L
Quarterly
Grab .
SDO
TPH / Non -polar Oil R Grease
[EPA Method 1664 (SGT-IIGM)]
mg/L
Quarterly
Grab
SDO
Detergents (MBAS)
mg/L
Quarterly
Grab
SDO
Turbidity
NTU
Quarterly
Grab
SDO
NH3—Nitrogen
mg/L
Quarterly
Grab
SDO
NO3+NO2—Nitrogen
mg/L
Quarterly
Grab
SDO
Phosphorus, Total
mg/L
Quarterly.
Grab
SDO
H
standard
Quarterly
Grab
SDO
Total Rainfal14
inches
Quarterly
Rain Gauge
Footnotes:
I Measurement Frequency: Pour times per year (once per quarter) during a representative storm event.
2 Grab sample collection shall begin within the first 30 minutes of discharge or as soon thereafter as reasonably possible
and shall be completed as expeditiously as practicable.
3 ,Sample Location: Samples shall be collected at each representative stormwater discharge outfall (SDO) as specified, in.
Table 1.
4 For each sampled representative storm event the total precipitation must be recorded. An on -site rain gauge 01%local rain
gauge reading must be recorded. i
The permittee shall complete the minimum twenty (20) analytical samplings in accordance with
the schedule specified below in Table 3. A minimum of 30 clays must separate sample dates
unless monthly monitoring has been instituted under a Tier Two response.
Part 11 Page 6 of 13

Permit No. NCS000508
Table 3. Monitoring Schedule
-Monitoring perioV:
Sample`Number,
,:: - ,Start
Year 1 - Period 1
1
July I, 2010
September 30, 2010
Year 1 - Period 2
2
October'l, 2010
December 31, 2010
Year 1 - Period 3
3
January 1, 2011
March 31, 2011
Year 1 - Period 4
4
April 1, 2011
= June 30, .201 1
Year 2 - Period 1
5
July 1, 2011
September 30, 2011"
Year 2 - Period 2
6
October 1, 2011
December 31, 2011
`:Fear 2 - Period 3
7
January 1, 2012
March 31, 2012
Year 2 - Period 4
8
April I, 2012
June 30, 2012
Year 3 - Period 1
9
July 1, 2012
September 30, 2012
Year 3 - Period 2
10
October 1, 2012
December 31, 2012
Year 3 - Period 3
11
January 1, 2013
March 31, 2013
Year 3 - Period 4
12
April 1, 2013
June 30, 2013
Year 4 - Period 1
13
July 1, 2013
September 30, 2013
Year 4- Period 2
14
October 1, 2013
December 31, 2013
Year 4- Period 3 .
15
January 1, 2014
March 31, 2014
Year 4 - Period 4
16
April 1, 2014
June 30, 2014
Year 5 - Period 1
17
July 1, 2014
September 30, 2014
Year 5 - Period 2
18
October 1, 2014
December 31, 2014
Year 5 - Period 3
I
19
January 1, 2015
March 31, 2015
L Year 5 - Period 4
20
April 1, 2015
June 30, 2015
Footnotes:
:1 " Maintaiit quarterly monitoring during permit renewal'proccss. If at the expiration of the Individual Permit,
the permittee has submitted an applicationfor renewal of coverage before the submittal deadline, the
pennittee will be considered for renewed coverage. The applicant must continue quarterly monitoring until
the renewed permit is issued.
2 If no representative storm event occurs during the sampling period, the pennittee must submit a monitoring
report indicating "No Flow" within 30 days of the end of the sampling period.
Part 11 Page 7 of 13

Permit No. NCS000508
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. The penmittee shall compare monitoring results to the benchmark values in ,
Table 4. The benchmark values in Table 4 are not permit limits but should be used as guidelines for
the pennittee'.s Stormwater Pollution Prevention Plan (SPPP). Exccedances of benchmark Values
must be addressed as provided in and in accordance with the tiered response chart on page 9 of Part
11.
Table 4. Benchmark Values for Routine Analytical Monitoring at Representative
Outfalls
Discharge CharSctcrrshcs ','
I It
Benchmark
Total Suspended Solids
mg/L
100
Biochemical Oxygen Demand
mg/L
30
Chemical Oxygen Demand
mg/L
120
TPH / Non -polar Oil & Grease
mg/L ,
15
Detergents (MBAS)
tng/j.
0.5
Turbidityt
NTU
50
NH3—Nitrogen
mg/L
7.2
NO3+NO2—Nitrogen
mg/L
] 0
Phosphorus, Total
mg/L
2
PH
standard
6 9
Footnotes: - - - - -
I Turbidity: The turbidity benchmark value will become effective beginning in Year 2 of this permit following the
completion of airport runway construction activities. ,
Part II Page 8 of 13

Permit No. NCS000508
.Tier One.
If: The first valid sampling results are above a benchmark value, or outside of the benchmark range, for any
parameter at any outfall or in -stream location; '
Then: The permittee shall:
1. Conduct a stonnwater management inspection of the facility within two weeks of receiving
sampling results.
2. Identify and evaluate possible causes of the benchmark value exceedance.
3. Identify potential source controls, operational controls, or physical improvements, if any, that could
reduce the difference between the sampling results and the benchmark value and select any such
corrective measure or combination of corrective measures that the permittee determines to be
appropriate and warranted, after due consideration of the cause and nature of the exceedance and the
feasibility, cost and effectiveness of such measures.
4. Implement the selected actions, if any, within two months of the inspection, or as soon thereafter
as reasonably possible.
5. Record each instance of a Tier One response in the Stonnwater Pollution Prevention Plan. Include
the date and value of the benchmark exceedance, the inspection date, the personnel conducting the
inspection, the selected actions, if any, and the date the selected actions were implemented, or, if no
action was implemented, the basis for that decision.
drier Iwo
If: During the term of this permit, the first valid sampling results from two consecutive monitoring periods are
above the benchmark values, or outside of the benchmark range, for any specific parameter at a specific
- outfall or in -stream location; -
Then: The pernittec shall:
1. Repeat all the required actions outlined above in Tier One.
2. Immediately institute monthly monitoring for each parameter at each outfall where a sampling result
exceeded the benclunark value for two consecutive samples. Monthly (analytical and qualitative)
monitoring shall continue until three consecutivesample results are below the benchmark values or
within the benchmark range.
3. If no discharge occurs during the sampling period; the permittee is required to submit a monthly
monitoring report indicating `No blow" to comply with reporting requirements.
4.. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan.
During the term of this permit, if the valid sampling results required for the permit monitoring periods exceed
the benchmark value, or are outside the benchmark range, for any specific parameter at any specific outfall or
in -stream location on four occasions, the permittee shall notify the DWQ Regional Office Supervisor in
writing within 30 days of receipt of the fourth analytical results.
The penmittee will then consult with DWQ about feasible, practical, and cost-effective measures that the
permittee could undertake to reduce the difference between the sampling results and the benchmark value and
to avoid causing or contributing to any violation of water quality standards. After consultation with the
permittee, DWQ may require that the permittee revise, increase, or decrease the monitoring frequency for the
remainder of the permit <ind may impose such other requirements, if any, as may be necessary to prevent the
Part II Page 9 of 13

Permit No. NCS000508
pennittee's discharge from causing or contributing to any violation of water quality standards, including but
not limited to:
require the pennittee to install stntctural�controls; o,r
require the permittee to implement other 'stormwater control measures.
If the inspection and evaluation of a particular sampling result under Tier One or Tier Two show that the
result is not caused by the permittee's operations or facilities, it will not be treated as a. benchmark
exceedance for purposes of determining whether four consecutive exceedances have'occurred.
This site discharges to a segment of the East Fork Deep River with in approved Total Maximum
Daily Load (TMDL) for turbidity and fecal colifonn. The Division will consider monitoring
results in detennining whether additional BMPs are needed to control the pollutant(s) of concern
to the maximum extent practicable.. ,
If additional BMPs are needed to achieve the required level of control as mandated by the
TMDL, if any, the permittee will be required to (1) develop a strategy for implementing
appropriate BMPs, and (2) submit a timetable for incorporation of those BMPs into the permitted
Stormwater Pollution Prevention Plan.
SECTION C: QUALITATIVE MONITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of
representative outfall status and shall be performed as specified in Table 5, during the analytical
monitoring event. Qualitative monitoring is for the purpose of evaluating the effectiveness of the
Stormwater Pollution Prevention Plan (SPPP) and assessing new sources of stOttnwater pollution.
In the event an atypical condition is noted at a stonnwater discharge outfall, the permittee shall
document the suspected cause of the condition and any actions taken in response to the
discovery. This documentation will be maintained with the SPPP.
Table 5. Qualitative Monitoring Requirements at All Outfalls
Discharge Characteristtes "—.Frequency,t
'
Monttoriii g,
Location
Color
Quarterly
SDO
Odor
Quarterly
SDO
Clarity
Quarterly
SDO.
Floating Solids
Quarterly
SDO
Suspended Solids
Quarterly
SDO
Foam
Quarterly
SDO
Oil Sheen
Quarterly
SDO
Erosion or deposition at the outfall
Quarterly
SDO
Other obvious indicators
of stormwater pollution
Quarterly
SDO
Part II Page 10 of 13

a
Permit No. NCS000508
Footnotes:
I Measurement Frequency: Four times per year (once per quarter) during a representative storm event, for each
year until either another permit is issued for this facility or until this permit is revoked or rescinded. If at the end
of this permitting cycle the permittee iias submitted'the appropriate paperwork for a renewal permit before the
submittal deadline, the permittee will be considered for a renewal application. The applicant must continue
quarterly monitoring until the renewed permit is issued. See Table 3 for schedule of monitoring periods through
the end of this permitting cycle.
2 Monitoring Location: Qualitative monitoring shall be perforncd at each stormwater discharge outfall (SDO)
regardless of representative outfall status.
SECTION D: DE-ICING EVENT ANALYTICAL MONITORING REQUIREMENTS
De-icing event analytical monitoring of stotmrwater discharges shall be performed at selected
representative SDOs as specified in Table 6. De-icing event analytical monitoring shall be
performed four (4) times per year during qualifying de-icing events resulting in the use of at least
100 gallons of glycol in any concentration. Each monitoring event shall be conducted during a
discharge event at the time of de-icing activities, or during the next separate discharge event, up
to 72 hours following de-icing activities.
Table 6. 6e-icing Event Analytical Monitoring Requirements for Representative
Outfalls
Discharge CharactertsGcs
Units
. Measurement
Frc ucnc'1.
Sample `'
>:T ez
Sample
L'ocati'0113
Ethylene Glycol
m * L
4X/yr
Grab
SDO
Propylene Glycol
m = L
4wyr
Grab
SDO
Biochemical Oxygen Demand
mg/L
4wyr
Grab
SDO
Chemical Oxygen Demand
m = L
4wyr
Grab
SDO
NH3—Nitrogen
m * L
4wyr
Grab
SDO
H
standard
4wyr
Grab
$DO
Acute Toxicit a
%,
' 4X/yr
Grab
SDO
Total Glycol A lied
.,gal
4X/ r
Estimate
Total Rainfall
inches
4X/yr
Rain gau =c
Footnotes:
I Measurement Frequency: Four times per year during qualifying de-icing events as described above.
2 If the stormwater runoff is controlled by a stornwater defentioit pond a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge from the pond or as soon thereafter as reasonably
possible.
3 Sample Location: Samples shall be collected at each representative stormwater discharge outfall (SDO) as specified in
Table 1.
4 Acute Toxicity shall be performed in accordance with the Special Conditions page at the end of this permit.
Monitoring results shall be compared to the benchmark values in Table 8. The benchmark
values in Table 8 are not permit limits but should be used as guidelines for the pefnlittee's
Part II Page 11 of 13

Permit No. NCS000508
Stormwater Pollution Prevention Plan (SPPP). Exceedances of benchmark values must be
addressed as provided in and in accordance with the tiered response chart on page 9 of Part II
except that item 2 of Tier Two is deleted and replaced with the following requirement:
2. Immediately institute monitoring during one qualifying de-icing event per month for each
parameter at each outfall where a sampling result exceeded the benchmark value for two
consecutive samples. Such monitoring (one per month) shall continue for the remainder of the
de-icing season so long as a qualified de-icing event occurs during each subsequent month.
In -stream analytical monitoring shall be performed concurrently with each of the four (4)
monitored de-icing events per'year. Each monitoring event shall be conducted during a
discharge event at the time of de-icing activities, or during the next separate discharge event, up
to 72 hours following de-icing activities. In -stream analytical monitoring shall be performed at
selected stream sites as specified in Table 7.
Table 7
De-icing Event Analytical Monitoring Requirements for In -stream Sampling
Parameter
Units y
-...,... .,Type.
Me'as urement
Fre' uenc>>:.'
Sample
- ..:;.
Ty e.
Sample
:.. 2
LocaGou
IS#1 through IS#2,
Dissolved Oxygen
mg/L
4X/yr
Grab
IS#5 through 1S#8,
IS410 through IS#I I
IS#I through IS#2,
.Turbidity
NTU
4X/yr
Grab '
IS#5 through IS#8,
IS#10 through IS#11
IS#I through IS#2,
PH
standard
4X/yr
Grab
IS#5 through IS#8,
IS#10 through IS#1 1
IS#1 througlr IS#2, .
Acute Toxicity,
%
4X/yr
Grab
IS#5 through IS#8,,
IS#10 through IS#11
Footnotes:
I Measurement Frequency: Four times per year during qualifying de-icing events as described above.
2 Sample Location: Samples shall be collected at each identified in -stream location named above.
3 Acute Toxicity shall be performed in accordance with the Special Conditions page at the end of this permit.
Part 11 Page 12 of 13

P%11„ Permit No. NCS000508
Monitoring results shall be compared to the benchmark values in Table 8. The benchmark
values in Table 8 are not permit limits but should be used as guidelines for the permittee's
Stortnwater Pollution Prevention Plan (SPPP). ). Exceedances of benchmark values must be
addressed as provided in and in accordance with the tiered response chart on page 9 of Part II
except that item 2 of Tier Two is deleted and replaced with the following requirement:
2. Immediately institute monitoring during one qualifying do -icing event per month for each
parameter at each in -stream location where a sampling result exceeded the benchmark value for
two consecutive samples. Such monitoring (one per month) shall continue for the remainder of
the de-icing season so long as a qualified de-icing event occurs during each subsequent month. "
Table 8. Benchmark Values for De-icing Event Analytical Monitoring for
Representative Outfa►ls and In -Stream Sampling,
Discharge; Characteristics :''
„ ;Units
Benchm irk
Ethylene Glycol
mg/L
14,000
Propylene Glycol
'ng/L
.. N/A
Biochemical Oxygen Demand
mg/L
30
Chemical Oxygen Demand
mg/L
120
NFI3-Nitrogen
ing/L
7.2
pli
Standard units
6-9
Acute Toxicity[
%
>100%
Dissolved Oxygen
mg/L
5 .
Turbidity'
NTU
50
Footnotes:
I `Acute Toxicity: For monitoring purposes, any result with a value of less than>100% would constitute a
benchmark exceedance.
2 Dissolved Oxygen: For monitoring purposes, any result with a value of less than 5 mg/L would constitute a
benchmark exceedance.
3 Turbidity: The turbidity benchmark value will become cffectiLe beginning in Year 2 of this permit following the
completion of airport runway construction activities.
Part 11 Page 13 of 13

i Peritit No. NCS000508
PART III , STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL PERMITS
SECTION A: COMPLIANCE AND LIABILITY
1. Compliance Schedule
The permittee shall comply with Limitations and Controls specified for stnrmwater discharges in
accordance with the following schedule: "
Existing Facilities already operating but applying for permit coverage for the first time: The Stormwater
Pollution Prevention Plan shall be developed and implemented within 12 months of the effective date of the
initial permit and updated thereafter on an annual basis. Secondary containment; as specified in Part II,
Section A, Paragraph 2(b) of this permit, shall be accomplished within 12 months of the effective date of
the initial permit issuance.
New Facilities applying for coverage for the first time and existing facilities previously permitted and
applying for renewal under this permit: The Stormwater Pollution Prevention Plan shall be developed and
implemented prior to the beginning of discharges from the operation of the industrial activity and be
updated thereafter on an annual basis. Secondary containment, as specified in Part II, Section A, Paragraph
2(b) of this permit sliall be accomplished prior to the beginning of discharges from the operation of the
industrial activity.
Duty to Comply
The pemtittee must comply with all conditions of this individual 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 upon renewal application.
a. The, permittee shall comply with standards or prohibitions established under section 307(a) of the
Clean Water Act for toxic pollutants within the time provided in the regulations that establish
these standards or prohibitions, even if the permit has not yet been modified to incorporate the
requirement.
b. The Clean Water Act provides that any person who violates a permit condition is subject to a civil
penalty not to exceed $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 violatrs 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 USC 1319 and
40 CFR 122.41(a).]
C. Under state law, a daily 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: NC General Statutes 143-215.6A].
d. Any person may be assessed an administrative penalty by the Director for violating section 301,
302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any
of such sections in a permit issued under section 402 of the Act. Administrative penalties for Class
I violations are not to exceed $10,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $25,060. Penalties for Class II violations are not to exceed
Part III Page 1 of 8

Permit No. NCS000508
$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.
3. Duty to Mitigate
The pennittee shall take all reasonable steps to minimize or prevent any discharge in violation of this
individual permit which has a reasonable likelihood of adversely affecting human health or the
environment.
4. Civil and Crintinal Liabilitv
Except as provided in Part 111, Section C of this permit regarding bypassing of stormwater control facilities,
nothing in this individual permit shall be construed to relieve the permittee from any responsibilities,
liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6A, 143-215.613, 143-
215.6C 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.
5. Oil and Hazardous Substance Liabilitv
Nothing in this individual 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 USC 1321.
6. Property Rights
The issuance of this individual permit does not convey any property rights in either real or personal
property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of
personal rights, nor any infringement of Federal, Stale or local laws or regulations.
7. Severability
The provisions of this individual permit are severable, and if any provision of this individual permit, or the
application of any provision of this individual permit to any circumstances, is held invalid, the application
of such provision to other circumstances, and the remainder of this individual permit, shall not be affected
thereby.
8. T Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information which the Director
may requestto determine whether cause exists for modifying, revoking and reissuing, or terminating the
permit issued pursuant to this individual permit or to determine compliance with this individual permit.
The permittee shall also furnish to the Director upon request, copies of records required to be kept by this
individual permit.
9. Penalties forTamne!i
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 individual 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.
Part III Page 2 of 8

Permit No. NCS000508
10. Penalties for Falsification of Resorts
The Clean Water Act provides that any person who knowingly makes anyfrlse statement, representation,
or certification in any record or other document submitted or required to be maintained under this
individual 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 B: GEN82AL CONDITIONS
1. Individual Pennit Expiration
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 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
be subjected to enforcement procedures as provided in NCGS § 143-215.36 and 33 USC 1251 et. seq.
2. Transfers
This permit is not transferable to any person except after notice to and approval by the Director. The
Director may require modification or revocation and reissuance of the permit to change the name and
incorporate such other requirements as may be necessary under the Clean Water Act. The Permittee is
required to notify the Division in writing in the event the permitted facility is sold or closed.
3. Signatory Requirements
All applications, reports, or information submitted to the Director shall be signed and certified. .
a. All applications to be covered under this individual permit shall be signed as follows:
(1) In the case of a corporation: by a principal executive officer of at least the level of vice-
president, or his duly authorized representative, if such representative is responsible for
the overall operation of the facility from which the discharge described in the permit
.application form originates;
(2) In the case of a partnership or limited partnership: by a general partner;
(3) In the case of a sole proprietorship: by the proprietor;
(4) In the case of a municipal, state, or other public entity: by a principal executive officer,
ranking elected official, or other duly authorized employee.
b. All reports required by the individual permit and other information requested by the Director shall
be signed by a person described above or by a duly. authorized representative of that person. ,A• ,
person is a duly authorized representative only if:
i
(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
Part III Page 3 of 8

Permit No. NCS000508
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 Director.
C. Any person signing a document under paragraphs a. or b. of this section shall make the following
certification:
"1 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 respoiisible 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." .
4. Individual Permit Modification, Revocation and Reissuance, or Termination
The issuance of this individual permit does not prohibit the Director from reopening and modifying the
individual permit, revoking and reissuing the individual pennit,�orierininating the individual 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 211 .0100; and North Carolina
General Statute 143-215.1 et at.
Permit Actions
The permit may be modified, revokcd'and reissued, or terminated for cause. The notificationof planned
changes or anticipated noncompliance does not stay any individual permit condition.
SECTION C: Oh ERATION AND MAINTENANCE Or POLLUTION CONTROLS
Proper Operation and Maintenance .
The pennittee 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 individual pennit. 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 pernitlee only when the operation
is necessary to achieve compliance with the conditions of this individual permit.
2. 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 individual
permit.
3. Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee for bypass unless:
Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; and
Part III Page 4 of 8

Permit No. NCS000508
b. There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities,
retention of stormwater or maintenance during normal periods of equipment downtime or dry _
weather. This condition is not satisfied if adequate backup controls should have been installed in
the exercise of reasonable engineering judgment to prevent a bypass which occurred during
normal periods of equipment downtime or preventive maintenance; and
C. The permittee submitted notices as required under; Part 111, Section E of this permit.
If the Director determines that it will meet the three conditions listed above, the Director may approve an
anticipated bypass after considering its adverse efi'e_.ts.
SECTION D: MONITORING AND RECORDS
Representative Samnline
Samples collected and measurements taken, as required herein, shall bc;characteristic of the volume and
nature of the pennitted discharge. Analytical sampling shall be performed during a representative storm
event. Samples shall be taken on a day and time that is characteristic of the discharge. All outfall samples
shall be taken before the discharge joins or is diluted by any other waste stream, body of water, or
substance. Monitoring points as specified in this permit shall not be changed without notification to and
approval of the Director.
2. Recordine Results -�
For each measurement, sample, inspection or maintenance activity performed or collected pursuant to the
requirements of this individual permit, the permittee shall record the following information:
a. The date, exact place, and time of samplin&, m-asurements, inspection or maintenance activity;
b. The individual(s) who performed the sampling, measurements, inspection or maintenance activity;
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.
3. Flow Measurements
r
Where required, appropriate flow meas'uremt m devices'and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements ofi the volume of
monitored discharges.
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to
NCGS 143-215.63 et. sect, the Water and Air Quality Reporting Acts, and to regulations published pursuant
to Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act, as Amended, and Regulation
40 CPR 136.
Part IlI Page 5 of 8

Pennit No. NCS000508
To meet the intent of the monitoring required by this individual permit, all test procedures must produce
minimum detection and reporting levels and all data generated must be reported down to the minimum
detection or lower reporting level of the procedure. `
5. Representative Outfall
If 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. I f 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.
6. Records Retention
Visual monitoring shall be documented and records maintained at the facility along with the Stormwater
Pollution Prevention Plan. Copies of analytical monitoring results shall also be maintained on -site. 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, and copies of all
reports required by this individual permit for a period ofat least 5 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. Insneciion and Entry
The permittee shall allow the :Director, or an authorized representative (including an authorized contractor
acting as a representative of the Director), or in the case of a facility which discharges through a municipal
separate storm sewer system, an authorized representative of a municipal operator or the separate storm
sewer system receiving the discharge, upon the presentation of credentials and other documents as may be
required by law, to;
a. Faster upon the permince' s premises where a regulated facility or activity is located or conducted,
or where records must be kept under the conditions of this individual permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions
of this individual permit;'
C. Inspect at reasonable times any facilities, equipment (including monitoring and control
equipment), practices, or operations regulated or required under this individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual permit compliance
or as otherwise authorized by the Clean Water Act, any substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
1. Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the Division on
Discharge Monitoring Report forms provided by the Director. Submittals shall be delivered to the Division
no later than 30 days from the date the facility receives the sampling results from the laboratory.
The permittee shall submit an Annual Summary Data Monitoring Report to the appropriate DWQ Regional
Office in February of each year. The submittal shall be on forms supplied by the Division.
Part III Page 6 of 8

Permit No. NCS000508
If no discharge has occurred from the facility during a monitoring period, the permittee is required to _
submit a discharge monitoring report, within 30 days of the end of the monitoring period, giving all-' .'
required information and indicating "NO FLOW" as per NCAC T15A 02B .0506.
The permittee shall record the required qualitative monitoring observations on the SDO Qualitative
Monitoring Report form provided by the Division, and shall retain the completed forms on site. Visual
monitoring results should not be submitted to the Division, except upon D WQ's specific requirement to do
so.
2. Submitting Reports
Two signed copies of Discharge Monitoring Reports (DMRs) shall be submitted to:
Central Files .
Division of Water Quality
1617 flail Service Center
Raleigh, North Carolina 27699-1617
In addition, a separate signed Annual Summary DMR copy shall be submitted to the local DWQ Regional.
Office (RO) by March 1 of each year.
Addresses for each RO and the counties covered by each RO can be found here:'
http://hvmv.enr.state.nc.us/htnil/regionaloffices.litml. The permittee shall retain the completed originals
on -site. Visual monitoring results should not be submitted to the Regional Offices or Central Files unless
specifically requested by DWQ:
3. 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 Water Quality. As required by the Act, analytical 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 143-215.613 or in Section 309 of the Federal Act.
4. . Non-Stormwater Discharges
If the storm event monitored in accordance with this Individual Permit coincides with a non-stormwater
discharge, the permittee shall separately monitor all parameters as required under the non-stormwater
discharge permit and provide this information with the stormwater discharge monitoring report.
5. - Planned Chances
The permittee shall give notice to the Director as soon as possible of any planned changes aythe permitted
facility which could significantly alter the nature or quantity of pollutants discharged. This notification
requirement includes pollutants which are not specifically listed in the Individual Permit or subject to
notification requirements under 40 CFR Part 122.42 (a).
6. Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which may result in noncompliance with the Individual Permit requirements.
Part III Page 7 of 8

Permit No. NCS000508
Spills
The permittee shall report to the local DWQ Regional Office, within 24 hours, all significant spills as
defined in Part VI of this permit. Additionally, the permittee shall report spills including: any oil spill of 25
gallons or more, any spill regardless of amount that causes a sheen on surface waters, any oil spill
regardless of amount occurring within 100 feet of surface.waters, and any oil spill less than 25 gallons that
cannot be cleaned up within 24 hours.
Bypass
a. 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.
b. Unanticipated bypass. The permittee shall submit notice within 24 hours of becoming aware of an
unanticipated bypass.
Twenty-four Hour Reportin
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 causes; the period of
noncompliance, including exact dates and tithes, and if the noncompliance has.not been corrected, the
anticipated time compliance is expected to, continue; and steps taken or planned to reduce, eliminate, and
i prevent ro�ccurrcnce of the noncompliance.
The Director may waive the written report on a,case-by-case basis if the oral report has been received.
within 24 hours.
10. Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time
monitoring reports are submitted.
IL Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a Notice of Intent to be
covered under this Individual Permit or in any report to the Director, it shall promptly submit such facts or
information.
Part III Page 8 of 8

NCS000508
PART IV . LIMITATIONS REOPENER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with any applicable
effluent guideline or water quality standard issued or approved under provisions of the Clean Water Act, if the
effluent guideline or water quality standard so issued or approved:
a. Contains different conditions or is otherwise more stringent than any effluent limitation in the individual
permit; or
b. Controls any pollutant not limited in the individual permit.
The individual permit as modified or reissued under. this par;i traph shall also contain any other requirementsinthe
Act then applicable.
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS.
The permittee must pay the administering and compliance monitoring fee within 30 (thirty) days after being billed
by the Division. Failure to pay the fee in timely manner in accordance with 15A NCAC 2H .0105(b)(4) may cause
this Division to initiate action to revoke the Individual Permit.
PART VI DEFINITIONS
1. .. Act —
See Clean Water Act.
2.. Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be allowed in the
stormwater conveyance system are:
(a) All other discharges that are authorized by a non-stormwater NPDES permit.
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate without added
chemicals, springs, discharges of uncontaminated potable water, waterline and fire hydrant
flushings, water from footing drains, flows from riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
3. Best Management Practices (BMPs)
. Measures or practices used to reduce the amount of pollution entering surface waters. BMPs may take the
form of a process, activity; or physical structure. More information on BMPs can be found at:
http://cfpub.epa.gov/npdes/storinwater/menuofbmps/index.cfni.
4. Bypass
A bypass is the known diversion of stormwater from any portion of a stormwater control facility including
the collection system, which is not a designed or established operating mode for the facility.
5. 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 in above ground storage
containers located in close proximity to each other having a total combined storage capacity, 'bf greater than
1,320 gallons.
Parts IV, V and VI Pagel of

Permit No. NCS000508
6. Certificate ol'Coverage
The Certificate of Coverage (COC) is the cover sheet which accompanies the Individual Permit upon
issuance and lists the facility name, location, receiving stream, river basin, effective date of coverage under
the permit and is signed by the Director.'
7. Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC
1251, et. seq.
8. Division or DWO
The Division of Water Quality, Department of Environment and Natural Resources.
9. Director .
The Director of the Division of Water Quality, the permit issuing authority. _
10. EMC
The North Carolina Environmental Management Commission.
it. Grab Sample
An individual sample collected instantaneously. Grab samples that will be analyzed (quantitatively or
qualitatively) must betaken within the first 30 minutes of discharge.
12. Hazardous Substance -
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act.
13. 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.
14. Municipal Separate Storm Sewer System
A stormwater collection system within an incorporated area of local self-government such as a city or town.
15. No Exposure
A condition of no exposure means that all industrial materials and activities are protected by a storm
resistant shelter or acceptable storage containers to prevent exposure to rain, snow, snownich, or runotT.
Industrial materials or activities include, but are not limited to, material handling equipment or activities,
industrial machinery, raw materials, intermediate products, by-products, final products, or waste products.
DWQ may grant a No Exposure Exclusion from NPDES Stormwater Permitting requirements only if a
facility complies with the terms and conditions described in 40 CFR § 122.26(g)
16. Notice of Intent
The state application form which, when submitted to the Division, officially indicates the facility's notice of
intent to seek coverage under an Individual Permit.
17. Permittee
The owner or operator issued a certificate of coverage pursuant to this Individual Permit.
18. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited to, any pipe,
ditch, channel, tunnel, conduit, well, or discrete fissure from which stormwater is or may be discharged to
waters of the state.
Part VI Page 2 of 5 Pages .

Permit No. NCS000508
19. Representative Storm Event
A storm event that measures greater than 0.1'inches of rainfall. The tune between this storm event and the previous
storm event measuring greater than 0.1 inches must be at least 72 hours. A single storm event may have a period of
no precipitation of up to 10 hours. For example, if it rains but stops before producing any collectable discharge, a
sample. may be collected if the next rain producing a discharge begins within 10 hours.
26. Representative Outfall Status
When it is established that the discharge o&stormwater'runoff from a single outfall is representative of the
discharges at multiple outfalls, the DWQ may grant representative outfall status. Representative on
status allows the permittee to perform analytical monitoring at a reduced number of outfalls.
21. Secondary Containment
Spill containment for the contents of the single largest tank within the containment stmcture plus sufficient'
freeboard to allow for.the 25-year, 24-hour storm event.
22.1 Section 313 Water Prioritv 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. Meets at least one of the following criteria:
- - (1) Is listed in appendix D of 40 CFR part 122 on 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.
23. Severe Property Damage
Means substantial physical damage to property, damage to the control 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.
24. 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 III of SARA; fertilizers; pesticides; and waste products such as
ashes, slag and sludge that have the potential to be released with stormwater discharges.
25. Significant 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). j.
26. Stonnwater Discharge Outfall (SDO)
The point of departure of stormwater from a discernible, confined, or discrete conveyance, including but
not limited to, storm sewer pipes, drainage ditches, channels, spillways, or channelized collection areas,
from which stormwater Rows directly or indirectly into waters of the State of North Carolina.
Part VI Page 3 of 5 Pages

Permit No. NCS000508
27. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or as a
result of snowmelt.
28. Stormwater Associated wilh'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. Facilities
considered to be engaged in "industrial activities" include those activities defined in 40 CFR 122.26(b)(14).
The tern does not include discharges from facilities or activities excluded from the NPDES program.
29. Stormwater Pollution Prevention Plan
A comprehensive site -specific plan which details measures and practices to reduce stomnvater pollution
and is based on an evaluation of the pollution potential of the site.
30. Total Maximum Daily Load (TNIDI.)
TMDLs are written plans for attaining and maintaining water quality standards, in all seasons, for a specific
water body and pollutant, (A list of approved TMDLs for the state of North Carolina can be found at
Imp: //h2o.eur.state.ne: us/tmdl/)
31. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
32, Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning operations, or
airport de-icing operations.
33. - Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air,
gravity, or ice from its siteof origin whichcan be seen with the unaided eye.
34. 25-year, 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once in 25
years. ..
0
Part VI, Page ,4'of 5 Pages

Pennit No. NCS000508
SUPPLEMENT TO MONITORING, CONTROLS AND LIMITATIONS FOR PERMITTED
DISCHARGES
SPECIAL CONDITIONS
ACUTE TOXICITY MONITORING- Ve-icing Events (Outfalls 004, 006, 016A, 024, 026,
027, 030, 033)
The pernittee shall conduct acurte toxicity tests on discharges occurring from four (4) qualifying
de-icing events 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 perfonmed as a Ceriodaphnia dubia 24-hour static test.
The parameter code for this test is TAE313. All toxicity testing results required as part of this
permit condition will be entered on the Discharge Monitoring Report form for the month in
which, it was performed, using the appropriate parameter code. Test results shall be sent to DWQ
in accordance with Part III Section E #2. Submitting Reports.
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
and will require immediate follow-up testing to be completed during The next qualified de-icing
event following the permittee's receipt of laboratory results.
Part VI Page s of 5 Pages