20120285 Ver 1_Stormwater Info_20071227

NC Turnpike Authority
Attn Shannon Sweitzer
5400 Glenwood Ave Suite 400
Raleigh NC 27612
Dear Mr Sweitzer
Michael F Easley Governor
William G Ross Jr Secretary
North Carolina Department of Environment and Natural Resources
H Sullins Director
D C E "o
December 27 2007 JAN
1 6 M8 ,
N C TURNPIKE AUTHORITY
RITY
Subject Permit No NCS000523
In accordance with your application for a stormwater discharge permit received on November 13
2007 we are forwarding herewith the subject state - NPDES permit This permit is issued pursuant to the
requirements of North Carolina General Statute 143 215 1 and the Memorandum of Agreement between
North Carolina and the US Environmental Protection agency dated May 9 1994 (or as subsequently
amended)
If any parts measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter This request must be in the form of a written petition conforming to
Chapter 150B of the North Carolina General Statutes and filed with the Office of Administrative
Hearings Post Office Drawer 27447 Raleigh North Carolina 27611 7447 Unless such demand is
made this decision shall be final and binding
This permit does not affect the legal requirements to obtain other permits which may be required
by the Division of Environmental Management or permits required by the Division of Land Resources
Coastal Area Management Act or any other Federal or Local governmental permit that may be required
I can assure you that we have made every effort to fully partner with the appropriate members of
North Carolina Turnpike Authority during the development of this permit If you have any questions
concerning this permit please contact Mike Randall at telephone number 919/733 5083 ext 545
Sincerely
>+,." ��V
For Coleen H Sullins Director
Division of Water Quality
cc Kathleen M McKeithan, URS Corporation
Matthew Lauffer NCDOT
Mike Mitchell EPA
Central Files
Stormwater and General Permit Unit Files
DWQ Raleigh Regional Office
One
N Carolina
Naturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh NC 27699 1617 Phone [phone] Customer Service
Internet www ncwaterouality org Location 512 N Salisbury St Raleigh NC 27604 Fax [phone] 623 6748
An Equal Opportunity /Affirmative Action Employer — 50 A Recycled/10 / Post Consumer Paper

TABLE OF CONTENTS
Permit No NCS000523
PAGE
PART I
PERMITTED ACTIVITIES
Part I 1 of 2
PART H
MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED
DISCHARGES
Part H 1 of 15
Section A
Illicit Discharge Detection And Elimination Program
Part H 1 of 15
Section B
Post - Construction Controls
Part H 3 of 15
B 1
Stormwater System Inventory and Pnontization Program
B 2
BMP Toolbox for Post Construction Runoff
B 3
BUT Inspection and Maintenance Program
B 4
Post Construction Runoff Control
B 5
Vegetation Management
Section C
Program for Encroachment
Part H 9 of 15
Section D
Construction
Part H 10 of 15
D 1
Sediment and Erosion Control Program
D 2
Borrow Pit and Waste Pile Activities
Section E
Education and Involvement Program
Part H 12 of 15
E 1
Internal — NCTA Staff and Contractors
E 2
External Public
Section F
Research Program
Part H 15 of 15
PART III
OTHER REQUIREMENTS
Part III 1 of 6
Section A
Reporting and Record Keeping Requirements
Part III 1 of 6
Al
Program Assessment
A2
New Activities and Facilities Seeking Coverage
A3
Report Submittals
A4
Recording Results
A5
Planned Changes
A6
Anticipated Noncompliance
A7
Twenty four Hour Reporting
A8
Other Information
Section B
Compliance Schedule
Part III 4 of 6
B 1
Stormwater Program Implementation
Section C
Total Maximum Daily Load
Part III 5 of 6
1

TABLE OF CONTENTS
Permit No NCS000523
PAGE
PART IV
STANDARD CONDITIONS
Part IV 1 of 6
Section A
Compliance and Liability
Part IV 1 of 6
Al
Duty to Comply
A2
Duty to Mitigate
A3
Civil and Criminal Liability
A4
Oil and Hazardous Substance Liability
A5
Property Rights
A6
Severability
A7
Duty to Provide Information
A8
Penalties for Tampering
A9
Penalties for Falsification of Reports
A10
Permit Actions
Section B
Operation and Maintenance of Pollution Controls
Part IV 4 of 6
B1
Proper Operation and Maintenance
B2
Need to Halt or Reduce not a Defense
133
Bypassing of Stormwater Control Facilities
Section C
Monitoring and Records
Part IV 5 of 6
Cl
Representative Sampling
C2
Flow Measurements
C3
Test Procedures
C4
Inspection and Entry
C5
Availability of Reports
PART V
LIMITATIONS REOPENER
Part V and VI 1 of 1
PART VI
ADMINISTERING AND COMPLIANCE
MONITORING FEE REQUIREMENTS
Part V and VI 1 of 1
PART VII
DEFINITIONS
Part VII 1 of 6
PART VIII
ACRONYMS
Part VIII 1 of 1
11

Permit No NCS000523
PART I PERMITTED ACTIVITIES
During the period beginning on the effective date of the permit and lasting until expiration, NCTA is
authorized to discharge general roadway drainage borrow pit wastewater and stormwater associated
with active NCTA projects Covered NCTA activities include the following
• Facilities with any of the following activities
• Pesticide and fertilizer storage
• Salt and deicing chemical storage
• Construction activities requiring erosion control as required by geographical restrictions
• Borrow pits /waste piles
• General roadway drainage
Waste pile activities shall be covered under tlus permit unless the site requires a permit from the Division
of Waste Management If a Division of Waste Management permit is required, the facility must also file
an application with Division of Water Quality (DWQ) for coverage under a separate NPDES stormwater
permit
All new general roadway drainage construction and borrow pit/waste pile activities will receive
automatic coverage under this permit upon notification to DWQ (see Part III Section A 2 ) New
industrial facilities must request coverage under this permit (see Part III Section A, Paragraph 2 a )
All discharges authorized herein shall be managed in accordance with the terms and conditions of this
permit and adequately treated as necessary 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
Coverage of material storage areas and musing activities under this permit supersedes the requirements to
seek discharge authorization under the NCDENR general permits NCG020000 (applicable to stormwater
point source discharge outfalls associated with mining and quarrying of nonmetallic minerals (except
fuels) land disturbance and vehicle maintenance, mine dewatering discharge outfalls wastewater
discharge outfalls from sand and/or gravel operations nondischargmg closed loop recycle systems, and
process recycle wastewater discharge outfalls) unless specifically required by the Director
This permit does not include water quality based effluent limits therefore in the event the permuttee s
discharges are found by the Division to cause or contribute to a violation of in stream water quality
standards, the Division ( NCDENR Division of Water Quality) may take enforcement action or NCTA
and DWQ shall conduct an assessment and implement the permit requirements necessary to adequately
address the permittee s contribution to the water quality standards violation
Applicable programs under this permit shall be initiated as NCTA projects require them
This permit does not relieve the permuttee 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 1

Permit No NCS000523 �
PART H MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES
SECTION A ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM
Objectives
i Implement an Illicit Discharge Detection and Elimination Program to assure that
potential illicit discharges spills and illegal dumping into the NCTA municipal
separate storm sewer system are detected and eliminated
it NCTA shall implement appropriate procedures and actions to report illicit spills,
discharges and illegal dumping for appropriate enforcement or other action by
NCDENR
b Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
Illicit Discharge Detection and Elimination Program and shall notify DWQ prior to modification
of any goals
Management
Measurable Goals
YR
1
YR
2
Measures
(a) Provide illicit
NCTA shall provide annual training for appropriate staff
X
X
discharge
and contractors Trainin g shall include identification and
identification
reporting of illicit discharges and illegal dumping
training
(b) Perform illicit
NCTA shall perform inspections for illicit connections to
X
X
discharge
the stormwater drainage system and illegal dumping
inspections
activities when performing other work on the NCTA
system
(c) Maintain a
NCTA shall maintain a standard reporting format and
X
X
standard point of
contact for all complaints and reports of illicit discharges
contact
(d) Report illicit
NCTA shall investigate all reports of illicit connections or
X
X
connections
illegal dumping NCTA shall report verified illicit
discharges to the appropriate DWQ Regional Office within
30 days of verification
(e) Maintain a
NCTA shall maintain a tracking database for reports of
X
X
tracking database
illicit discharges
Part II Page 1 of 13

Permit No NCS000523
SECTION B POST - CONSTRUCTION CONTROLS
Stormwater System Inventory and Pnoritizahon Program
a Objectives
1 Develop and maintain a statewide NCTA stormwater system inventory for the
purpose of supporting the Post Construction Program and Illicit Discharge
Detection and Elimination Program
it Maintain a stormwater system to map sensitive water crossings
b Management Measure
The NCTA shall implement the following management measure to meet the objectives of
the Stormwater System Inventory and Prioritization Program and shall notify DWQ prior
to modification of any goals
Management
Measure
Measurable Goals
YR
1
YR
2
(a) Develop and
NCTA will develop and maintain a stormwater outfall
X
X
maintain a
inventory to include outfalls from primary and secondary
stormwater
roadways that cross or run parallel to sensitive waters
system inventory
The feasibility of a GIS based system will be explored
of outfalls to
sensitive waters
(b) Include outfalls
NCTA will maintain a stormwater outfall inventory that
X
X
for NCTA
includes outfalls from material storage areas Outfall
material storage
coverage may have GIS attributes that define the type of
areas in the
structure the location drainage areas amount of
inventory
impervious area, offsite drainage, pollutants of concern
and the type of industrial activity The NCTA material
storage areas inventory shall be updated annually
Part H Page 2 of 13

Permit No NCS000523
2 BAP Toolbox for Post - Construchon Runoff
a Objectives
i Develop and update as necessary a BMP Toolbox to aid in the siting design and
construction of stormwater quality BMPs with guidance on the suitability of
each for NCTA applications
ii Evaluate BMPs for applicability to a linear highway system
ui Implement new and innovative technology on an experimental basis and in
keeping with the current DWQ policy on new stormwater treatment
technologies
b Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
BMP Toolbox for Post Construction Runoff Program and shall notify DWQ prior to
modification of any goals
Management Measures
Measurable Goals
YR
1
YR
2
(a) Develop a BMP
NCTA will develop a stormwater BMP Toolbox to
X
Toolbox
provide internal guidance on design of post -
construction runoff control measures The BMP
Toolbox will include appropriate uses /anticipated
applications design criteria, materials specifications
and pollutant removal potential Innovative or
proprietary BMPs will be evaluated in keeping with
DWQ policy for permitting new /mnovative
technologies( Permitting New Stormwater
Treatment Technologies DEHNR November 24
1997 or as amended)
(b) Evaluate BMPs defined
NCTA shall fully evaluate the water quality BMPs
X
in DWQ s Stormwater
defined in the Stormwater Best Management
Best Management
Practices Manual [NCDEHNR November 1995 and
Practices Manual for
as may be subsequently amended] and produce
linear applicability
guidance on the suitability of each for NCTA
applications The guidance shall form the baseline
BMP Toolbox and include appropriate uses
construction guidelines, siting constraints etc
(c) Evaluate design related
NCTA shall investigate the potential stormwater
X
X
BMPs
impacts during the planning phase of a project by
consultmg the Toolbox to evaluate design related
BMPs Documentation of the investigation shall
include recommendations on the feasibility of
incorporating these measures into the NCTA
planning process Documentation and progress
reports shall be maintained by NCTA and will be
available upon request
Part R Page 3 of 13

Permit No NCS000523
Management Measures
Measurable Goals
YR
1
YR
2
(d) Submit BMP Toolbox
The BMP Toolbox or a letter stating the use of a
X
and any future revisions
NCDENR approved BMP Toolbox will be
to DWQ for approval
submitted to DWQ Revisions to the Toolbox or
additional BMPs will be submitted for DWQ
approval as they are developed Implementation of
the BMP Toolbox will be in keeping with the
requirements of the Post - Construction Stormwater
Program (PCSP)
Part H Page 4 of 13

Permit No NCS000523
BMP Inspection and Maintenance Program
Objective
Develop and implement a BMP Inspection and Maintenance Program to aid in the
inspection operation and maintenance of BMPs
b Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
BMP Inspection and Maintenance Program and shall notify DWQ prior to modification of any
goals
Management Measures
Measurable Goals
YR
1
YR
2
(a) Evaluate BMP
NCTA will evaluate BMPs included in the BMP
X
inspection and
Toolbox for inspection and maintenance needs The
maintenance needs
evaluation will include consideration of the BMP
type sitmg conditions and State Stormwater Permit
requirements
(b) Develop a BMP
NCTA will develop a written procedure outlining the
X
X
Inspection and
inspection and maintenance requirements for various
Maintenance Manual
types of stormwater BMPs The document will
outline the regular inspection frequency an inspection
checklist, how to instructions for regular
maintenance evaluation and reporting procedures for
non routine maintenance and an inspection and
maintenance tracking mechamsm
(c) Develop and
NCTA will develop a BMP Inspection and
X
implement a BMP
Maintenance Program to implement the BMP
Inspection and
Inspection and Maintenance Manual The program
Maintenance Program
will include training for appropriate NCTA staff and
contractors
(d) Submit BMP
Inspection and Maintenance information will be
X
Inspection and
submitted to DWQ as part of the annual report
Maintenance
Certification of the use of a State approved BMP
information to DWQ
Inspection and Maintenance Manual or revisions to
for review
the manual will be submitted as new BMP types are
developed under the BMP Toolbox
Part II Page 5 of 13

Permit No NCS000523
4 Post - Construction Runoff Controls
Objective
In cooperation with DENR develop and implement a post - construction runoff program to
regulate stormwater runoff by requiring structural and non structural best management practices
to protect water quality reduce pollutant loading and minimize post construction impacts to
water quality
b Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
Post Construction Runoff Control Program and shall notify DWQ prior to modification of any
goals
Management Measures
Measurable Goals
YR
YR
1
2
(a) Develop a Post
NCTA shall work with DENR to develop a Post
X
X
Construction
Construction Stormwater Program (PCSP) to control
Stormwater Program
runoff from NCTA projects and highway facilities
The PCSP shall describe implementation of the
approved BMP Toolbox define a process to
implement BMPs in accordance with watershed
classification and identify a training program for
appropriate NCTA staff and contractors to
implement the PCSP
(b) Submit the Post
The proposed NCTA post construction program shall
X
Construction
be submitted to DWQ for approval before the
Stormwater Program to
expiration of this permit The plan will be
DWQ for approval
implemented within 6 months of receiving DWQ
approval during the next permitting cycle
(c) Implement Post
NCTA shall implement post construction stormwater
X
Construction
control measures for discharges to state waters
Stormwater Control
Measures
Part II Page 6 of 13

Permit No NCS000523
Vegetation Management Program
Objectives
Manage application of pesticides fertilizers and other vegetation management
materials to minim, e pollutant potential of stormwater runoff
Use only approved vegetation management materials
Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
Vegetation Management Program and shall notify DWQ prior to modification of any goals
Management Measures
Measurable Goals
YR
1
YR
2
(a) Implement appropriate
NCTA shall require staff and contractors to utilize
X
X
pest control practices
appropriate vegetative practices approved or
recommended by NCDA NCTA shall comply with
NCDA standards in selecting appropriate pest
control methods and implementation practices
NCTA will require staff and contactors to
implement appropriate roadside vegetation
management practices as new technology and
procedures are developed
(b) Use appropriate
Pesticide and fertilizer usage shall be restricted to
X
X
vegetation management
those materials approved by EPA/NCDA and shall
materials
be used in accordance with label restrictions
(c) Provide training on
NCTA shall require annual training for applicable
X
X
vegetation management
vegetation management personnel and contractors
The training shall consist of topics such as
appropriate uses and applications of all pest control
methods This training shall be designed to increase
awareness of proper mowing techniques release of
biological and chemical agents, appropriate spill
response the correct use and handling of products
and the potential for water quality impacts
Part II Page 7 of 13

Permit No NCS000523
SECTION C PROGRAM FOR ENCROACHMENT
Objectives
a Assist DENR to ensure all discharges to NCTA s roadway drainage are properly
permitted under applicable laws and rules
b Coordinate with DENR the reporting of non permitted or under permitted discharges
that adversely impact or have the potential to adversely impact NCTA s discharges
including discharges that result from the direct or indirect stormwater discharges
entering its system
2 Management Measures
The NCTA shall implement the following management measures to meet the objectives of this
section and shall notify DWQ prior to modification of any goals
Management Measures
Measurable Goals
YR
1
YR
2
(a) Require certification
NCTA shall require that all facilities requesting to
X
X
of stormwater permit
connect to NCTA roadway drainage submit a
coverage and
certification of appropriate NPDES stormwater
compliance
permit coverage and compliance
(b) Develop and
NCTA will develop and implement a strategy to
X
X
implement strategies
contact DENR in the event an encroachment that
to assist NCDENR in
adversely impacts or has the potential to adversely
identifying discharges
impact NCTA s discharges is identified
that adversely impact
or have the potential
to adversely impact
NCTA s discharges
Part H Page 8 of 13

Permit No NCS000523
SECTION D CONSTRUCTION
Sediment and Erosion Control Program
Objectives
i Control development activities disturbing one or more acres of land surface
including activities by NCTA contractors
u Require construction site operators to implement appropriate erosion and
sediment control practices
ill Require site inspection and enforcement of control measures
iv Establish requirements for construction site operators to control waste that may
cause adverse impacts to water quality such as discarded building materials
concrete truck washout chemicals litter and sanitary waste at the construction
site
b Management Measures
Implementation of a NCDENR Division of Land Resources Erosion and
Sediment Control Program and unplementation of the General Permit
NCGO 10000 effectively meets the objectives above by permitting and
controlling development activities disturbing one or more acres of land surface
and those activities less than one acre that are part of a larger common plan of
development The delegated program is authorized under the Sediment Pollution
Control Act of 1973 and Chapter 4 of Title 15A of the North Carolina
Administrative Code This program includes procedures for public input
sanctions to ensure compliance requirements for construction site operators to
implement appropriate erosion and sediment control practices review of site
plans which incorporates consideration of potential water quality impacts and
procedures for site inspection and enforcement of control measures Currently
this program has been delegated to NCDOT by the Sedimentation Control
Commission in February 1991 and as may be subsequently amended and
applied to NCTA construction projects as described in the memorandum of
understanding (MOU) between NCDOT and NCTA Future applicable
programs may be delegated to the NCTA
u NCTA shall mcorporate the applicable requirements of NCGO10000, the North
Carolina General Permit to Discharge Stormwater under the National Pollutant
Discharge Elimination System associated with construction activities issued
October 1 2001 and as may be subsequently amended into the delegated
Erosion and Sediment Control Program
Part H Page 9 of 13

Permit No NCS000523
2 Borrow Pit and Waste Pile Activities
a Objective
Implement sediment and erosion control measures and reclamation plans on all borrow pit and
waste pile projects (soil waste or disposal areas) associated with NCTA projects in keeping with
the sediment and erosion control program established by the North Carolina Sediment Control
Commission Existing commercial quarries and borrow pits not under the control of NCTA are
covered under their own individual applicable permits
b Management Measures
The NCTA shall unplement the following management measures to meet the objectives of the
Borrow Pit/Waste Pile Program and shall notify DWQ prior to modification of any goals
Management Measures
Measurable Goals
YR
1
YR
2
(a) Implement erosion and
NCTA shall implement erosion and sediment control
X
X
sediment control
measures on all borrow pit and waste pile projects
measures on all borrow
The measures utilized shall be in keeping with the
pits /waste piles
erosion and sediment control program established by
the North Carolina Sediment Control Commission
(b) Implement approved
NCTA shall unplement the approved reclamation
X
X
reclamation plans on all
plan on all borrow pit/waste pile projects The
borrow pits /waste piles
reclamation measures utilized shall be in keeping
with the reclamation program established by the
North Carolina Mining Commission
(c) Develop and implement
NCTA will implement the Borrow Pit Discharge
X
X
a Borrow Pit Discharge
Management Program developed by NCDOT and
Management Program
NCDWQ develop an mspection and maintenance
program, training material and instruct field
personnel overseeing borrow pit operations NCTA
will evaluate and implement appropriate
new /innovative technologies
Part H Page 10 of 13

Permit No NCS000523
SECTION E EDUCATION AND INVOLVEMENT PROGRAM
1 Internal — NCTA Staff and Contractors
a Objectives
i Develop and implement a program to tram NCTA staff and contractors about the
importance of stormwater quality within areas where NCTA operates or has
planned active projects
u The training should include topics such as spill control, chemical application
illicit connections and illegal dumping
b Management Measures
The NCTA shall implement the following management measures to meet the objectives
of the Public Education and Involvement Program Internal NCTA shall notify DWQ
prior to modification of any goals Additional training programs are listed under other
programs such as the BMP Toolbox the BUT Inspection and Maintenance Program and
the Vegetation Management Program
Management Measures
Measurable Goals
YR
1
YR
2
(a) Provide pollution
NCTA shall provide and maintain annual stormwater
X
X
prevention
pollution awareness training for appropriate NCTA
awareness training
personnel and contractors involved in construction and
for staff
maintenance activities Training shall include general
construction and
stormwater awareness NPDES stormwater permit
maintenance
NCGO10000 unplementarion identification of
workers
stormwater pollution potential appropriate spill response
actions reporting/documenting procedures, and contacts
for reporting spills and illicit connections /illegal
dumping
Part H Page 11 of 13

Permit No NCS000523
2 External - Public
a Objectives
i Develop and unplement a program to educate the public about the importance of
stormwater quality within areas where NCTA operates or has active projects
including chemical application, illicit connections and illegal dumping
ii Develop diverse educational materials to engage and educate the public from
different social economic and age groups
ui Establish and maintain public involvement in NCTA stormwater quality
programs
b Management Measures
The NCTA shall implement the following management measures to meet the objectives
of the Public Education and Involvement External and shall notify DWQ prior to
modification of any goals
Manage t
Measurable Goals
Y1R
Y2R
rme
a Develop and
NCTA shall develop the External Education and
X
submit an
Involvement Plan and submit to DWQ for approval
External
in Year 1 The plan shall include the requirements
Education and
for the measurable goals below The plan will be
Involvement
initiated within 6 months after receiving DWQ
Plan to DWQ
approval
for approval
b Provide
NCTA shall provide stormwater pollution prevention
X
X
pollution
awareness information to the general public through the
prevention
distribution of educational brochures at significant events
awareness
public involvement workshops and/or locations throughout
educational
local regions where NCTA projects are located and/or
materials to
proposed
public users
c Maintain a
NCTA shall develop in Year 1 and implement and maintain
X
X
public
in subsequent years a public education website to document
education
NCTA s pollution prevention programs and promote
website
stormwater quality The website will include articles on
stormwater information on water quality stormwater
protects and activities and ways to contact stormwater
management program staff
d Develop
NCTA will work with DENR, NCDOT and other agencies
X
X
educational
to promote and distribute public education materials
partnerships
annually
Part II Page 12 of 13

Permit No NCS000523
SECTION F RESEARCH PROGRAM
Objectives
a NCTA will independently or jointly with DENR, NCDOT or other agencies conduct
research with faculty and staff at state universities of other designated institutions that
result in independent quantitative assessment of pollutant loads from NCTA permitted
activities and/or measure BMP effectiveness
b NCTA will work with DENR NCDOT or other agencies to conduct research to enhance
or vnprove existing practices or develop new methods or processes with state of the art
technology to meet future permit requirements
2 Management Measures
The NCTA shall implement the following management measures to meet the objectives of the
Research Program and shall notify DWQ prior to modification of any goals
Management Measures
Measurable Goals
YR
1
YR
2
a Develop a
NCTA shall develop a Research Program that shall be in
X
Research Plan
keeping with the guidelines established by the Federal
Highway Administration Evaluation and Management of
Highway Runoff Water Quality Manual WHWA PD 96
032 or any updates) The Program shall be documented
in the Research Plan
The Research Plan will include
1) A description of the Research Program and process
for requesting funding
2) A process to evaluate the pollutant removal
effectiveness of BMPs identified by DWQ and
NCTA
3) A process that identifies research needs that will
evaluate program improvement areas and use of
state of the art technology
b Submit the
The proposed NCTA Research Plan shall be submitted to
X
Research Plan to
DWQ for approval in Year 1 The plan will be initiated
DWQ for
within 6 months after receiving DWQ approval
approval
c Implement the
NCTA shall perform or sponsor research to fulfill the
X
Research Plan
Research Plan
Part II Page 13 of 13

Permit No NCS000523
PART III OTHER REQUIREMENTS
SECTION A REPORTING AND RECORD KEEPING REQUIREMENTS
Program Assessment
NCTA shall provide DWQ with an annual report consisting of a program summary and
assessment The report shall include the status of each component in Part H of this
permit, proposed changes to the stormwater management program or implementation
schedule a summary of illicit connection and illegal dumping reports and inspections
identification of water quality improvement or degradation as a result of NCTA
activities and successes failures and milestones /accomplishments of the program
b The annual report shall be submitted to DWQ no later than March 1 of each year The
annual assessment report shall cover the period from January 1 through December 31
that immediately preceded the submittal date An annual report will not be submitted in
year 1 as the permit would not apply to the previous year
c NCTA shall maintain a copy of each annual program assessment report on file for a
period of five years
2 New Activities and Facilities Seeking Coverage
a New NCTA activities and facilities wluch are subject to NPDES stormwater permitting
may apply for coverage under this permit by submittmg a permit modification request
and appropriate fee to DWQ
b Upon request NCTA shall provide DWQ with a list of all new and completed
construction and borrow pit/waste pile activities for a specified tune period within the
previous five years of the request date Notification shall consist of the project location
size receiving stream name(s) and classification(s) wastewater treatment management
measures and contact person All new construction activities and borrow pits /waste
piles must meet the requirements of this permit regardless of notification status
c NCTA shall provide the notification in an electronic format compatible with DWQ
systems
Report Submittals
Duplicate signed copies of all reports required herein, shall be submitted to the following
address
Division of Water Quality
Surface Water Protection Section
Stormwater Permitting Unit
1617 Mail Service Center
Raleigh, North Carolina 27699 1617
Part III Page 1 of 4

Permit No NCS000523
b All applications reports or information submitted to DWQ shall be signed by a principal
executive officer or duly authorized representative A person is a duly authorized
representative only if
I The authorization is made in writing by a principal executive officer
u The authorization specified either an individual or a position having
responsibility for the overall operation of a regulated facility or activity or an
individual or position having overall responsibility for envrronimental/stormwater
matters and
rrr 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
"I cerhfy under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted Based on my inquiry of the person or
persons who manage the system or those persons directly responsible for gathering the
information, the information submitted is to the best of my knowledge and belief true accurate
and complete I am aware that there are significant penalties for submitting false information
including the possibility of fines and imprisonment for knowing violations "
4 Recording Results
For each measurement sample, inspection or maintenance activity performed or collected
pursuant to the requirements of this permit the permrttee shall record the following information.
a The date exact place and time of sampling measurements inspection or maintenance
activity
b The individual(s) who performed the sampling measurements inspection or
maintenance activity
C The date(s) analyses were performed
CL The individual(s) who performed the analyses
e The analytical techniques or methods used and
f The results of such analyses
5 Planned Changes
The permrttee shall give notice to the Director as soon as possible of any planned changes which
could significantly alter the nature or quantity of pollutants discharged This notification
requirement includes pollutants that are not specifically listed in the permit or subject to
notification requirements in 40 CFR Part 122 42 (a)
Part III Page 2 of 4

Permit No NCS000523
Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes which
may result in noncompliance with the permit requirements
7 Twenty -four Hour Reporting
a The permittee shall report to the central office or the appropriate regional office any
noncompliance or reasonably anticipated non - comphance which may endanger health or
the environment Any information shall be provided orally within 24 hours from the
time the permittee becomes aware of the circumstances A written submission shall also
be provided within 5 days of the time the permittee becomes aware of the circumstances
To report an environmental emergency call 1 800 858 0368
b The written submission shall contain a description of the noncompliance and its causes
the period of noncompliance including exact dates and tunes and if the noncompliance
has not been corrected the anticipated tune compliance is expected to continue and
steps taken or planned to reduce eliminate and prevent reoccurrence 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
8 Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in applying to be
covered under this permit or in any report to the Director it shall promptly submit such facts or
information
SECTION B COMPLIANCE SCHEDULE
Stormwater Program Implementation
NCTA may modify the stormwater management program implementation schedule through the
annual reporting process
Part III Page 3 of 4

Permit No NCS000523
SECTION C TOTAL MAXIMUM DAILY LOAD ASSESSMENT
NCTA shall develop and implement a program to address unpaired waters for which a TMDL
has been approved by EPA The program shall be unplemented in the drainage areas of those
TMDLs which name the NCTA as a significant contributor of the pollutant of concern and
assigns the NCTA a wasteload allocation (WLA) explicit from other point sources
2 For each TMDL the NCTA is subject to as described in (1) above the NCTA shall summarize
the locations of NCTA outfalls already identified in its Stormwater Outfall inventory which are
within its jurisdictional area with the potential of discharging the pollutant(s) of concern for
established TMDLs to the unpaired segments to their tributaries and to segments and tributaries
within the watershed contributing to the unpaired segments
For each TMDL the NCTA is subject to as described in (1) above the NCTA shall develop an
Assessment & Monitoring Plan (Plan) The Plan shall include an evaluation of the need for
additional data collection related to the NCTA s discharge of the TMDL pollutant of concern
Additional data collection to be evaluated may include (but does not require) supplemental
inventory of NCTA outfalls monitoring an assessment of the effectiveness of existing BMPs
and an assessment of the potential for non NCTA discharges entering the NCTA s conveyance
system to negatively impact the quality of the NCTA s stormwater chscharge If the Plan
proposes analytical monitoring then it shall include a description of the sample type frequency
and any seasonal considerations Where appropriate the permittee may reduce the monitoring
burden by proposing to monitor outfalls that the Division would consider substantially similar to
other outfalls The monitoring plan shall be adjusted as additional outfalls are identified
4 The Plan shall include a schedule for implementing the proposed assessment and monitoring
activities The Plan shall be submitted to DWQ for comments no later than 12 months after
notification by DWQ that NCTA has been assigned a WLA DWQ shall complete its review of
the plan within 6 months of receiving the plan from the permittee
The NCTA shall uutiate implementation of the Plan within 6 months of receiving Plan approval
from DWQ In accordance with the implementation schedule the NCTA shall provide in
subsequent annual reports a summary of the assessment and monitoring activities performed
within the reporting period
Within 6 months of completing the assessments and monitoring activities outlined in the Plan
the NCTA shall submit a report of its findings to DWQ The report shall include an assessment
of whether additional structural and/or non structural BMPs are necessary to meet the NCTA s
WLA The report shall include a schedule for implementing such BMPs Upon approval by
DWQ the NCTA shall implement any needed BMPs in accordance with the schedule
Subsequent annual reports after unplementation of the additional BMPs will report on their
effectiveness
Part III Page 4 of 4

Permit No NCS000523
PART IV STANDARD CONDITIONS
SECTION A COMPLIANCE AND LIABILITY
Duty to Comply
NCTA must comply with all conditions of this permit Any permit noncompliance constitutes a
violation of the Clean Water Act and is grounds for enforcement action for permit termination
revocation and reissuance or modification or denial of permit coverage upon renewal
application
a. NCTA shall comply with standards or prohibitions established under section 307(a) of
the Clean Water Act for toxic pollutants within the tune provided in the regulations that
establish these standards or prohibitions even if the permit has not yet been modified to
mcorporate the requirement
b The Clean Water Act provides that any person who violates section 301 302 306 307
308, 318 or 405 of the Act or any permit condition or limitation implementing any such
sections in a permit issued under section 402 or any requirement unposed in a
pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act is
subject to a civil penalty not to exceed $27 500 per day for each violation The Clean
Water Act provides that any person who negligently violates sections 301 302 306, 307
308 318 or 405 of the Act or any condition or limitation implementing any of such
sections in a permit issued under section 402 of the Act or any requirement unposed in a
pretreatment program approved under section 402(a)(3) or 402(b)(8) of the Act is
subject to criminal penalties of $2 500 to $25 000 per day of violation or imprisonment
of not more than 1 year or both. In the case of a second or subsequent conviction for a
negligent violation a person shall be subject to criminal penalties of not more than
$50 000 per day of violation or by imprisonment of not more than 2 years or both Any
person who knowingly violates such sections or such conditions or limitations 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. In the case of a second or subsequent conviction for a
knowing violation a person shall be subject to criminal penalties of not more than
$100 000 per day of violation or imprisonment of not more than 6 years, or both Any
person who knowingly violates section 301 302 303 306 307 308 318 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 and who knows at that time that he thereby places
another person in inmmment danger of death or serious bodily mjury shall upon
conviction be subject to a fine of not more than $250 000 or imprisonment of not more
than 15 years or both In the case of a second or subsequent conviction for a knowing
endangerment violation a person shall be subject to a fine of not more than $500,000 or
by imprisonment of not more than 30 years or both An organization, as defined in
section 309(c)(3)(B)(ui) of the CWA shall upon conviction of violating the imminent
danger provision be subject to a fine of not more than $1000 000 and can be fined up to
$2 000 000 for second or subsequent convictions
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 North Carolina General
Statutes 143 215 6A]
Part IV Page 1 of 6

Permit No NCS000523
CL 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
linutation 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 $11000 per
violation, with the maximum amount of any Class I penalty assessed not to exceed
$27500 Penalties for Class Il violations are not to exceed $11000 per day for each day
during which the violation continues with the maximum amount of any Class II penalty
not to exceed $137 500
2 Duty to 1VLthgate
NCTA shall take all reasonable steps to minim, 7e or prevent any discharge in violation of tins
permit wluch has a reasonable likelihood of adversely affecting human health or the
environment
Civil and Criminal Liability
Except as provided in Part IV Section B Paragraph 3 of this permit regarding bypassing of
stormwater control facilities nothing in this pernut 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 6B 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
4 Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve
the permittee from any responsibilities liabilities or penalties to which the pemuttee is or may
be subject to under NCGS 143 -215 75 et seq or Section 311 of the Federal Act 33 USC 1321
5 Property Rights
The issuance of this permit does not convey any property rights in either real or personal
property or any exclusive privileges nor does it authorize any mjury to private property or any
invasion of personal rights nor any infringement of Federal State or local laws or regulations
6 Severability
The provisions of this permit are severable and if any provision of this permit or the application
of any provision of this peanut to any circumstances is held invalid the application of such
provision to other circumstances and the remainder of this permit, shall not be affected thereby
7 Duty to Provide Information
The permittee shall furnish to the Director within a reasonable time any information which the
Director may request to determine whether cause exists for modifying revoking and reissuing or
terminating the coverage issued pursuant to this permit or to determine compliance with tlus
permit The permittee shall also furnish to the Director upon request copies of records required
by this permit
Part IV Page 2 of 6

Permit No NCS000523
8 Penalties for Tampering
The Clean Water Act provides that any person who falsifies tampers with or knowingly renders
maccurate any monitoring device or method required to be maintained under this permit shall,
upon conviction be punished by a fine of not more than $10 000 per violation or by
imprisonment for not more than two years per violation or by both If a conviction of a person is
for a violation committed after a first conviction of such person under this paragraph punishment
is a fine of not more that $20 000 per day of violation or by imprisonment of not more than 4
years or both
9 Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement
representation or certification in any record or other document submitted or required to be
maintained under this permit including monitoring reports or reports of compliance or
noncompliance shall upon conviction be punished by a fine of not more than $10 000 per
violation, or by imprisonment for not more than two years per violation or by both
10 Permit Actions
This permit may be modified revoked and reissued, or terminated for cause The notification of
planned changes or anticipated noncompliance does not stay any permit condition
Part IV Page 3 of 6

Permit No NCS000523
SECTION B OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Proper Operation and Maintenance
The permittee shall at all tunes properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the permittee to
achieve compliance with the conditions of this permit Proper operation and maintenance also
includes adequate laboratory controls and appropriate quality assurance procedures This
provision requires the operation of back up or auxiliary facilities or sumlar systems that are
installed by a permittee only when the operation is necessary to achieve compliance with the
conditions of the 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 permit
3 Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action again st a permittee for bypass
unless
a Bypass was unavoidable to prevent loss of life personal injury or severe property
damage and
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 III Section A of this permit
d The Director may approve an anticipated bypass after considering its adverse effects if
the Director determines that it will meet the three conditions listed above
Part IV Page 4 of 6

Permit No NCS000523
SECTION C MONITORING AND RECORDS
Representative Sampling
Samples collected and measurements taken, as required herein shall be characteristic of the
volume and nature of the pernutted discharge Analytical sampling shall be performed during a
representative storm event Samples shall be taken on a day and tune that is characteristic of the
discharge All samples shall betaken 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 Flow Measurements
Where required appropriate flow measurement devices and methods consistent with accepted
scientific practices shall be selected and used to ensure the accuracy and reliability of
measurements of the volume of monitored discharges `
Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published
pursuant to NCGS 143 215 63 et seq the Water and Air Quality Reporting Acts and to
regulations published pursuant to Section 304(g) 33 USC 1314 of the Federal Water Pollution
Control Act as Amended and Regulation 40 CFR 136
To meet the intent of the monitoring required by this permit, all test procedures must produce
muumum detection and reporting levels and all data generated must be reported down to the
m,mmum detection or lower reporting level of the procedure
4 Inspection 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 Enter upon the pernuttee's prenuses where a regulated facility or activity is located or
conducted or where records must be kept under the conditions of this permit
b Have access to and copy at reasonable tunes any records that must be kept under the
conditions of this permit
Inspect at reasonable tunes any facilities equipment (including monitoring and control
equipment) practices or operations regulated or required under this permit and
d Sample or monitor at reasonable tunes for the purposes of assuring permit compliance or
as otherwise authorized by the Clean Water Act any substances or parameters at any
location
Part IV Page 5 of 6

Permit No NCS000523
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 of this permit shall
be available for public inspection at the offices of DWQ 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 6B or in
Section 309 of the Federal Act
Part IV Page 6 of 6

Permit No NCS000523
PART V LIMITATIONS REOPENER
This permit shall be modified or alternatively revoked and reissued, to comply with any applicable
effluent guideline or water quality standard issued or approved under Sections 302(b) (2) (c) and (d)
304(b) (2) and 307(a) 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 limitation in the permit or
b Controls any pollutant not limited in the permit
The permit as modified or reissued under this paragraph shall also contain any other requirements in the
Act then applicable
The issuance of this permit does not prohibit the Director from reopening and modifying the permit
revoking and reissuing the permit or terminating the permit as allowed by the laws rules and regulations
contained in Title 40 Code of Federal Regulations Parts 122 and 123, Title 15A of the North Carolina
Administrative Code Subchapter 2H 0100 and North Carolina General Statute 143 215 1 et al
PART VI ADMINISTERING AND COMPLIANCE MONITORING FEE REQUIREMENTS
The permittee must pay the administering and compliance monitoring fee within 30 (dlurty) 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 Certificate of Coverage
Part V and VI Page 1 of 1

Permit No NCS000523
PART VII DEFINITIONS
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 drams air conditioner or air compressor
condensate without added chemicals springs discharges of uncontaminated potable
water waterline and fire hydrant flushings water from footing drams flows from
riparian habitats and wetlands imgation drainage landscape watering pavement wash
water which does not use detergents and no spills or leaks or toxic or hazardous
materials have occurred (unless all materials have been removed) routine external
building wash down which does not use detergents and incidental windblown mist from
cooling towers that collect on rooftops
(c) Discharges resulting from fire fighting training without chemical additives or from fire
fighting
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
4 Borrow Pit
A Borrow Pit means a man made depression in the ground created when earthen materials are
removed to provide fill or materials at another site Often, the pit will fill with ram water or
groundwater and must be dewatered to continue the removal of materials
Bulk Storage of Liquid Products
Bulk Storage of Liquid Products means liquid raw materials manufactured products waste
materials or by products with a capacity that triggers compliance with 40 CFR 112
6 Bypass
A bypass is the known diversion of stormwater or wastewater from any portion of a control
facility including the collection system, which is not a designed or established operating mode
for the facility
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
Part VII Page 1 of 5

Permit No NCS000523
Division or DWO
The Division of Water Quality Department of Environment and Natural Resources
Director
The Director of the Division of Water Quality the permit issuing authority
10 Grab Sample
An individual sample collected instantaneously Grab samples that will be directly analyzed or
qualitatively monitored must be taken within the first 30 minutes of discharge
11 Hazardous Substance
Any substance designated in 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act
12 Industrial Activrty
For the purposes of this permit industrial activities shall mean all industrial activities listed
defined in 40 CFR 122 26 with the exception of general roadway drainage construction
activities and borrow pits /waste piles
13 Municipal Separate Storm Sewer System
Municipal separate storm sewer means a conveyance or system of conveyances (including roads
with drainage systems municipal streets catch basins curbs gutters ditches man -made
channels or storm drams)
(i) Owned or operated by a State city town borough county parish district association or
other public body (created by or pursuant to State law) having jurisdiction over disposal of
sewage industrial wastes storm water or other wastes including special districts under
State law such as a sewer district, flood control district or drainage district or similar
entity or an Indian tribe or an authorized Indian tribal organization or a designated and
approved management agency under section 208 of the CWA that discharges to waters of
the United States
(ii) Designed or used for collectmg or conveying storm water
(m) Which is not a combined sewer and
(iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR
1222
A Phase I MS4 includes medium and large MS4s To be a medium or large MS4 the MS4 must
be located in an urbanized area with a population greater than 100 000
A Phase 11 MS4 includes regulated small MS4s To be a regulated small MS4 the MS4 must be
located in an urbanized area with a population less than 100 000 but with selected population
densities
Part VII Page 2 of 5

Permit No NCS000523
14 Outfall
The point of wastewater or stormwater discharge from a discrete conveyance system See also
point source discharge
15 Permittee
The owner or operator issued this permit (NCTA)
16 Point Source Discharge of Stormwater
Any discernible, confined and chscrete 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
17 Representative Storm Event
A storm event that measures greater than 0 1 inches of ramfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0 1 inches has occurred A single storm
event may contain up to 10 consecutive hours of no precipitation For example if it rains for 2
hours without producing any collectable discharge and then stops a sample may be collected if a
ram producing a discharge begins again within the next 10 hours
18 Secondary Containment
Spill containment for the contents of the single largest tank within the containment structure plus
sufficient freeboard to allow for the 25 year 24 hour storm event
19 Section 313 Water Priority Chemical
A chemical or chemical category which
a Is listed in 40 CFR 372 65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of 1986 also titled the Emergency
Planning and Community Right to Know Act of 1986
b Is present at or above threshold levels at a facility subject to SARA title III Section 313
reporting requirements and
That met at least one of the following criteria
(1) Is listed in appendix D of 40 CFR Part 122 on either Table II (organic priority
pollutants) Table III (certain metals cyanides and phenols) or Table IV (certain
toxic pollutants and hazardous substances)
(2) Is listed as a hazardous substance pursuant to Section 311(b)(2)(A) of the CWA
at 40 CFR 116 4 or
(3) Is a pollutant for which EPA has published acute or chronic water quality
criteria
Part VII Page 3 of 5

Permit No NCS000523
20 Sensitive Waters
a Waters that are classified as lugh quality outstanding resource shellfish trout or
nutrient sensitive waters in accordance with subsections (d) and (e) of 15A NCAC 2B
0101 (Procedures for Assignment of Water Quality Standards — General Procedures)
b Waters that are occupied by or designated as critical habitat for aquatic animal species
that are listed as threatened or endangered by the United States Fish and Wildlife Service
or the National Marine Fisheries Service under the provisions of the Endangered Species
Act of 1973 (Pub L No 93 205 87 Stat 884 16 U S C §§ 1531 et seq ) as amended
c Waters for which the designated use as described by the classification system set out in
subsections (c) (d) and (e) of 15A NCAC 2B 0101 (Procedures for Assignment of
Water Quality Standards — General Procedures) have been determined to be impaired in
accordance with the requirements of subsection (d) of 33 U S C § 1313
The following North Carolina water quality classifications are HQW by definition Water
Supply I (WS I) Water Supply II (WS II) Shellfishmg (SA) and waters which DWQ has
received a petition for reclassification to either WS I or WS -II
21 Severe Property Damage
Means substantial physical damage to property damage to the control facilities that 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
22 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
23 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)
24 Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following
rainfall or as a result of snowmelt
Part VII Page 4 of 5

Permit No NCS000523
25 Stormwater Associated with Industrial Activity
The discharge from any point source which is used for collectmg 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 term does not include discharges from facilities
or activities excluded from the NPDES program See also the definition of industrial activities
26 Stormwater Pollution Prevention Plan
A comprehensive site specific plan which details measures and practices to reduce stormwater
pollution and is based on an evaluation of the pollution potential of the site
27 Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the average
once in ten years Design storm information can be found in the State of North Carolina Erosion
and Sediment Control Planning and Design Manual
28 Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act
29 Upset
Means an exceptional incident in which there is unintentional and temporary noncompliance
with technology based permit limitations because of factors beyond the reasonable control of the
permittee An upset does not include noncompliance to the extent caused by operational error
improperly designed treatment or control facilities inadequate treatment or control facilities
lack of preventive maintenance or careless or improper operation
30 Waste Pile
A Waste Pile means a stack or pile of materials remaining from construction or maintenance
activities For NCTA projects these waste piles typically consist of earthen materials or
construction material rubble
31 Vehicle Maintenance Activity
Vehicle rehabilitation mechanical repairs painting fueling lubrication vehicle cleaning
operations or airport deicing operations
32 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
Part VII Page 5 of 5

Permit No NCS000523
PART VIII ACRONYMS
ACRONYMS
BMP
Best Management Practice
CWA
Clean Water Act
DWQ
NC DENR Division of Water Quality
EPA
Environmental Protection Agency (United States)
ESC
Erosion and Sedimentation Control
FHWA
Federal Highway Administration
GIS
Geographical Information System
IDDEP
Illicit Discharge Detection and Elimination Program
MCM
Minimum Control Measures
MS4
Municipal Separate Storm Sewer System
NCAC
North Carolina Administrative Code
NCDENR
North Carolina Department of Environment and Natural Resources
NCDOT
North Carolina Department of Transportation
NCTA
North Carolina Turnpike Authority
NCGS
North Carolina General Statute
NHD
National Hydrography Dataset
NPDES
National Pollutant Discharge Elimination System
PCSP
Post Construction Stormwater Program
SARA
Superfund Amendments and Reauthorization Act
SPPP
Stormwater Pollution Prevention Plan
TMDL
Total Maximum Daily Load
USGS
United States Geological Survey
WS
Water Quality Designation — Water Supply water
Part VIII Page 1 of 1