Allen Steam Facility - Duke Energy (8)

NCDENR
North Carolina Department of Environment and Natural Resources
Dlvlslon,of Water Quality
Beverly,Eaves Perdue Coleen H Sullins
Governor Director
July 20, 2011
Mr Mark McGary
`Senior Engineer
Duke Energy Carolinas, LLC
P.0 Box 1006, Mail Code EC13K
Charlotte, North Carolina 28201
Dee Freeman
Secretary
Subject- Draft NPDES Stormwater Permit
Permit No NCS000546
Duke Energy Carolinas, ,LLC - Allen Steam
Station
Gaston County
Dear Mr McGary
Enclosed w><th.this letter is a copy of the draft NPDES stormwater permit for your facility Please review the
draft permit very carefully to ensure thorough understanding of the conditions and requirements°it
contains
Please submit any comments to me no later, than thirty (30) days following your receipt of the draft
Comments should be sent to,the address listed,at the bottom of this page. If no adverse comments are
received from the public or from you, this permit will likely be issued in about two months
With its application, the company requested representative outfall status (ROS) for four�stormwater
discharge outfalls The Mooresville Regional Office has recommended approval with some modifications
The recommendations include approval of ROS for SW005, SWO08, SW015 ()Instead of SW018), and
SWO11. Because of a lack of recent analytical data, the Region also advised a short-term period of sampling
at some of the outfalls represented by this group, including outfalls SWO02, SWO07, SWO08, SWO09,
SWO10, and SWO12
The draft permit reflects the Region's recommendations for SWO11 and SW012 with ,a special footnote
because discharges commingle with wastewater outfall flows Since ROS is typically handled outside of the
permit, changes may notrequire a permit modification. The Division will document final ROS approval in
the cover letter of the issued permit.
Wetlands and Stormwater,Branch
1617 Mad 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 www,ncwaterquality org
An Equal Opportunity 1 Affirmative Action Employer
NorthCarolina
�1 %aturallt�

Mr. M. McGary
Duke Energy Carolinas, LLC - Allen Steam Station
Permit No. NCS000546
July 20, 2011
Page 2
If you have any questions or comments concerning this draft permit, please contact me at [phone]
or [e-mail].
Sincerely,
Bethany A�Ge rgoulias
Environmental Engineer
Stormwater Permitting Unit
cc: Mooresville Regional Office, Water Quality Section (w/attachment)/ M. Parker
Stormwater Permitting Unit
Attachments
2

NCS000546
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 ral S 143-215.1, other lawful
standards and regulations promulgated, and adopted b orth Carolina Environmental
Management Commission, and the Federal -Water lu ntrol Act, as amended,
Duke Ene v ffariffinas. LLC
is hereby,authon di a stormwater, from a facility located at
Pn Steam Station
I Plant Allen Road,
Belmont, NC
Gaston County
to receiving waters designated as- the Catawba and South Fork Catawba Rivers, class WS -V, B
streams in the Catawba 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
Note Draft Permit Dates are Approximate
This permit shall become effective October 1, 2011
This permit and the authorization to discharge shall expire at midnight on September 30, 2016
Signed this day September 9, 2011
for Coleen H. Sullins, Director
Division of Water Quality
By the Authority of the Environmental Management Commission

PART
Section A
Section B:,
Section C:
PART II
Section A:
Section B:
Section C -
Section D:
PART III
TABLE OF CONTENTS
INTRODUCTION
Individual Permit Coverage
Permitted Activities
Location l
MONITORIIS
DISCHARGF
Stormwab
Analytical
Qualitativ
On -Site V
Pennit No NCS000546
PERMITTED
STANDARD CITIONS FOR NPDES STORMWATER INDIVIDUAL
PERMITS
SectionA- Compliance'and Liability
1
Compliance Schedule
2
Duty to Comply
3.
Duty to Mitigate
4.
Civil and Crimmal 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

E
Permit No NCS000546
3 Signatory Requirements
4 Individual Permit Modification, Revocation and Reissuance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Troper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3 Bypassing of Stormwater Control Fpcil
Section D! Monitoring and Records
1.
Representative Sampling
2.
Recording Results
3
Flow Measurements
4
Test Procedures
5
Representative faI
6
Recor +eI
7.
Inspecti
Section E- Reporting uireme s
1.
Di omtoring Reports
2
Submi mg
3.
Availability of Reports
4.
Non-Stormwater Discharges
5
Planned Changes
6
Anticipated.Noncomphance
7
Bypass
8.
Twenty-four Hour Reporting
9.
Other Noncompliance
10.
Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
ii

Permit'No NCS000546
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 is authorized to discharge stormwater associated wrth`industrnal activity. Such
discharges shall be controlled, limited and monitored as specified in this -permit
If industrial materials and activities are not exposed to prec
CFR § 122.2'6(g), the facility may -qualify for a,No Exposure
discharge permit requirements. Any owner or operator Ns
Certification must submit a No Exposure Certificatio O
approval by the Division, must maintain no exposur o
under a valid, NPDES stormwater permit; and must r
every five (5) years.
SECTION B: PERMITTED
ipitation or runoff as described in 40
k
cl sion from NPDES stormwater
0 obtain a No Exposure
to th Division; must receive
s authorized to discharge
for t . o Exposure Exclusion once
Until this permit expires or is ' ieevo , the permittee is authorized to discharge
stormwater to the surface waters rt lina or separate storm sewer system that has been
adequately treated and managed ' e with the terms and conditions of this individual
permit All stormwater disch
,e
sha in accordance with the conditions of this permit.
Any other point source disc face waters of the state is prohibited unless it is an
allowable non-stormwater d ge or is covered by another permit, authorization, or approval
The 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 2

'SECTION C: LOCATION MAP
Permit No NCS000546
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Map Scale 1.24, 000
Duke Energy Carolinas, LLC
Allen Steam Station
Latitude: 350 11'7 N
Longitude: 810 01Y 32" W
County: Gaston
Rece(wng Stream- Catawba River
Stream Class- WS -V, B
Sub -basin. 03-08-37 (Catawba River Basin)
Part I Page 2 of 2
Facility Location

Permit No NCS000546
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES,
SECTION A: STORMWATER POLLUTION PREVENTION PLAN
'The Permittee shall develop a'Storinwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part III, Standard
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
1. Site Plan. The site plan shall provide a description of the ysical facility and the
potential pollutant sources which may be expect d t Bute to contamination of
stormwater discharges The site plan shall co in t wi :
(a) A general location map (USGS quadr ap or appropriately drafted
equivalent map), showing the facili s to in relation to transportation
routes and surface waters, the n - e r eiving water(s) to which the
stormwater outfall(s) discharg , o lscharge is to a municipal separate
storm sewer system, the n of e cipai_ity and -the ultimate receiving
waters, 71ocati(
d late an etude of the point(s) of discharge The
general (O a ely the site map) shall identify whether each
receiving w're the state's 303(d) list,of impaired waters) oris
located in a e wich a TMDL has been established, and what the
parameter(stee.
North Carol3 List can be found here.
http://h2o.v,nc.us/tmdl/General303d.htm#Downloads
North CaroliL documents can be found here:
http://h2o.enr.stgte.nc.us/tmdl/TMDL list.htm#Final _TMDLs.
(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 stormwater discharge outfalls, 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.
Part II Page 1 of 11

Permit No NCS000546
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges. The certification,statement will be signed in
accordance with the requirements found in Part III, Standard Conditions, Section
B, 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: A0
(a) Feasibility Study. A review of the tee
the methods of operations and/or stor
of materials and processes to stormw,
prevent exposure of all storage areas,
manufacturing or fueling operatiorma
not practical, the stormwater mg
diverting the stormwater rungffavjfy
feasibility of changing
sate, or reduce exposure
;al, the permittee shall
ft1handling operations, and
WhereI.
elimination of exposure is
pan;shall document the feasibility of
areas of potential contamination
(b) Secondary Contaighwnt4WiregWis,and Records Secondary containment is
required for buIk1Qge3Wid materials, storage in any,amount of Section
313 of Title III of d Amendments and Reauthorization Act (SARA)
water priority c mi4be
storage in any amount of hazardous substances, in
order to prey leaklls from contaminating stonnwater runoff A table
or summary and stored materials and their,associate&secondary
containment aintained If the secondary containment devices are
connected directly to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices (which shall be
secured closed with a locking mechanism), and any ,stormwater that accumulates
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 stormwater. Accumulated stormwater shall be released if found to
be uncontaminated by the material stored within the containment area Records
documenting the individual making the observation, the description of the
accumulated stormwater, and the date and time,of the release shall be kept for a
period of five years
(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 stonnwater 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.
Part 11 Page,2 of 11

Permit No NCS000546
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 the,
SPRP shall be identified in a written list incorporated into°the SPRP and signed and dated
by each individual acknowledging their responsibilities for the plan. A responsible
person shall be on-site at all times during facility operations that have the potential to
contaminate stormwater runoff through spills or exposure of materials associated with the
facility operations. The SPRP must be site stormwater specific. Therefore, 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 stormwater aspects of the SPRP. The
common elements of the SPCC with the SPRP may be incorporated by reference into the
SPRP
4 Preventative, Maintenance and Good Houseke g' _ preventative
maintenance and good housekeeping progra ha e d The program shall list
all stormwater control systems, stormwater di_ a ou s, all on-site and adjacent
surface waters and wetlands, industrial active cluding material storage areas,
material handling areas, disposal areas, pr are ading and unloading areas, and
haul roads), all drainage features and s c existing structural BMPs. The
program shall establish schedules of p io , maintenance, and housekeeping
activities of stormwater control s s s 1 as facility equipment, facility areas, and
facility systems that pre p al ormwater exposure or stormwater pollution.
Inspection of material han ar d regular cleaning schedules of these areas shall
be incorporated into the Ti ely compliance with the established schedules for
inspections, mainten , and _ keeping,shall be recorded'in wntir�g,and'maintamed
in the SPPP.
Employee Training. IqWng 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 stormwater runoff. Facility personnel (or team)
responsible for implementing the framing shall be identified, and their annual training
shall be documented by the signature of each employee trained
6 Responsible Party: The, Stormwater Pollution,Prevention Plan shall identify as pecific
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
7. Plan Amendment. The permittee shall. amend the Plan whenever there is a change in
design, construction, operation, or maintenance= which has a significant effect on the
potential for -the discharge of pollutants to surface waters 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 re -certification that the stormwater outfalls have been evaluated for the presence
of non-stormwater discharges. Each annual update shall include a re-evaluation of the
Part II Page 3 of 11

Permit No NCS000546
effectiveness of the BMPs listed in the BMP Summary of the Stormwater Management
Plan.
The Director may notify the permittee when the Plan does not meet one or more of the
mimmum requirements of the permit Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements The permittee shall provide certification in writing (in accordance with
Part III, Standard Conditions, Section B, Paragraph, -5 to the Director that the changes
have been made.
Facility Inspections Inspections of the facility and all st'ormwater systems shall occur as
part of the Preventative Maintenance and Good Housekee ing Program, at a minimum on
a semi-annual schedule, once during the first half of ar (January to June), and once
during the second half (July to December), wit 1 days eparating inspection
dates (unless performed more frequently than m These facility inspections
are different from, and in addition to, the sto er disc ge characteristic monitoring
required in Part H B, G and D of this permit.
9. Implementation. The permittee shall
shall include documentation of all m
activities, and trainingXie
of actions taken to im
vehicle maintenance a
five years ,and made aimmediately upon req
;Ian Implementation of the Plan
easurements, inspections, maintenance
Including the log of the sampling data and
.d with the industrial activities, including
ntation shall be kept on-site for a period of
or the Director's authorized representative
Part II Page 4 of I I

Permit No. NCS000546
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
Analytical monitoring of stormwater discharges shall be performed as specified in Table 1. All
analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of ten analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO).
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 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. A,
Table 1. Anal tical Monitoring Re
I=-
40 CFR Part 423 Appendix A:
13 Priority Pollutant Metals
(Ag, As, Be, Cd, Cr, Cu, Hg,
Ni, Pb, Sb, Se, Tl, Zn
Grab
_ nual
:/I
SDO
Al
semi-annual
Grab
SDO
B
semi-annual
Grab
SDO
COD
semi-annual
Grab
SDO
TSS
m 1 semi-annual
Grab
SDO
Sulfate
mg/1 semi-annual
Grab
SDO
Oil and Grease (O&G)
mg/1 semi-annual
Grab
SDO
H
standard semi-annual
Grab
SDO
Total Nitrogen (TN)
mg/1 annual
Grab
SDO
Total Phosphorus (TP)
mg/1 annual
Grab
SDO
Total Rainfalls "
inches semi-annual
Rain Gauge
-
Footnotes:
I Measurement Frequency: Twice per year 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 has 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 semi-annual monitoring until
the renewed permit is issued. See Table 2 for schedule of monitoring periods through the end of this permitting
cycle.
2 If the stormwater runoff is controlled by a stormwater detention pond, a grab sample of the discharge from the
pond shall be collected within the fust 30 minutes of discharge.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative
outfall status has been granted.
Part 11 Page 5 of 11

Permit No. NCS000546
4 Stormwater Discharge Outfalls SW011 and SW012 (which also serve as outfalls 004 and 003 under NPDES
wastewater permit NC0004979) should each be sampled for these parameters at least once during a
representative storm event during Year 1 — Period land must be reported in accordance with Part III, Section
EA. (Reporting Requirements — Non-Stormwater Discharges). Benchmark exceedances at these outfalls may
trigger a Tier 1 response. Depending on sampling results and/or changes in activities in the drainage areas, the
Division may require continued stormwater sampling at one or both of these outfalls.
5 Mercury shall be analyzed by EPA Low-level detection method 1631E. This method also requires a field blank
be analyzed. A benchmark does not apply; however, values above 0.012 µg/1 should be noted on annual SDO
DMR reports to the Regional Office.
6 For each sampled representative storm event the total precipitation must be recorded. An on-site rain gauge or
local rain gauge reading must be recorded. ; : r ( k -! .1'
The permittee shall complete the minimum ten analytical samplin s in accordance with the
schedule specified below in Table 2. A minimum of 60 )da st separate each sample date
unless monthly monitoring has been instituted under a ' sponse.
.
Table 2. Monitoring Schedule
Footnotes:
1 Maintain semi-annual monitoring during permit renewal process. The applicant must continue semi-annual
monitoring until the renewed permit is issued.
2 If no discharge occurs during the sampling period, the permittee must submit a monitoring report indicating "No
Flow" within 30 days of the end of the six-month sampling period.
3 SDOs SWOT 1 and SW012 should be sampled at least once during this period.
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. 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. The permittee
shall compare monitoring results to the benchmark values in Table 3. The benchmark values in
Table 3 are not permit limits but should be used as guidelines for the permittee's Stormwater
Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the permittee to
increase monitoring, increase management actions, increase record keeping, and/or install
stormwater Best Management Practices (BMPs) in a tiered program. See below the descriptions
of Tier One and Tier Two.
Part II Page 6 of 11
1be
011
March 31, 2012
Year 1 —Period 1
Year 1
— Period 2
2
, 2012
September 30, 2012
Year 2
— Period l
3
O ber 1, 2012
March 31, 2013
Year 2
— Period 2*7April
pril 1, 2013
September 30, 2013
Year 3
— Period 1
tober 1, 2013
March 31, 2014
Year 3
— Period 2
1, 2014
September 30, 2014
Year 4 —
Period 1
October 1, 2014
March 31, 2015
Year 4 —
Period 2
8
April 1, 2015
September 30, 2015
Year 5 —
Period 1
October 1, 2015
March 31, 2016
Year 5 —
Period 2
10
April 1, 2016
September 30, 2016
Footnotes:
1 Maintain semi-annual monitoring during permit renewal process. The applicant must continue semi-annual
monitoring until the renewed permit is issued.
2 If no discharge occurs during the sampling period, the permittee must submit a monitoring report indicating "No
Flow" within 30 days of the end of the six-month sampling period.
3 SDOs SWOT 1 and SW012 should be sampled at least once during this period.
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. 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. The permittee
shall compare monitoring results to the benchmark values in Table 3. The benchmark values in
Table 3 are not permit limits but should be used as guidelines for the permittee's Stormwater
Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the permittee to
increase monitoring, increase management actions, increase record keeping, and/or install
stormwater Best Management Practices (BMPs) in a tiered program. See below the descriptions
of Tier One and Tier Two.
Part II Page 6 of 11

Permit No NCS000546
Table 3. Benchmark Values for Analvtical Monitorin
Aluminum
mg/l
0.75
Antimony
mg/1
0.09
Arsenic
mg/1
036
Beryllium
mg/1
0.07
Boron
mg/l
N/A
Cadmium
mg/l
0.001
Chromium
mg/1
Copper
mg/1
7
Lead
mg/1
0:
Mercury
n/l,
N/A
Nickel
mg/1
0.26
Selenium
m
Q 056
Silver
Ivor
0.001
Thallium
N/A
Zinc
9/1
0 067
COD
mg/1
120
TSS
mg/1
100
Sulfate
mg/l
500
O&G
mg/l
30
Total Nitrogen (TN)
mg/l
30
Total Phosphorus (TP)
mg/1
2
'pH (see footnote 1)
standard
6 -'9,1
Footnotes
I If pH values outside this range are recorded in sampled stormwater discharges, but ambient rainfall data
indicate precipitation pH levels are,within + 0:1 standard units of the�measured discharge values or
lower, then°the lower threshold of this benchmark range does not apply Readings from an on-site or local ram
gauge (or local precipitation data) must be documented to demonstrate background concentrations were below
the benchmark pH, range
Part II Page 7 of 11

Permit No NCS000546
If. The first valid sampling results are above a benchmark value, or outside of the benchmark
range, for any parameter,at any outfall;
Then: The, permittee shall:
1. Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results.
2 Identify and evaluate possible causes of the benchmark value exceedence
3. Identify potential, and select the specific: source controls, operational controls, or physical
improvements to reduce concentrations of the parametArsptconcem, or to bring
concentrations to within the benchmark range. 4
4 Implement the selected actions within two m f th ection.
5. Record each instance of a Tier One response i _ rmwater Pollution Prevention Plan.
Include the date and value of the benchm e , the inspection.date, the personnel
conducting the inspection, the selected io a date the selected actions were
implcmented.
If: During the term of this pen2
t, the fi alid sampling results from two consecutive
ff
monitoring periods area Lth
,,eolnchmark values, or outside of the benchmark range, for any
specific parameter at a s ec ischarge outfall,
Then: The permittee shall:
1. Repeat all the required actions outlined above in Tier One
2. Immediately institute monthly monitoring for all parameters (except mercury) at every
outfall where a sampling result exceeded the benchmark value for two consecutive samples
Monthly (analytical and qualitative) monitoring shall continue until three consecutive
sample results are below the benchmark values, or within the benchmark range, for all
parameters at that outfall.
3 If no discharge occurs during the sampling period, the permittee is required to submit a
monthly monitoring report indicating "No Flow "
4. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan
Part II Page,8 of I1
r

Permit No NCS000546
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 on four occasions, the permittee shall notify the DWQ
Mooresville Regional Office Supervisor in writing within 30 days of receipt of the fourth
analytical results. DWQ may, but isnot limited to.
• Require that the permittee increase or decrease the monitoring frequency for the
remainder of the permit;
• Work with the permittee to develop alternativ es rate es;
• Require the permittee to install structural-sto ter co ;
• Require the permittee to implement other st control measures, or
• Require that the permittee implement si ca ns`to qualify for the No Exposure
Exclusion
This site discharges to the South NeF
River, which is impaired for copper If a Total
Maximum Daily Load {TMDL) is this segment of the river, the Division may
require additional monitoring this (currently part of the permit) or consider routine
sample results in determinin hether d itional BMPs are needed to control the pollutants) of
concern to the maximum ex ra able. This ,site is also located in the watershed draining t&
Lake Wylie, which has a TNfiqWnutrients
If additional BMPs are needed to achieve the required level of control, 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 4, during the analytical
monitoring event. [If analytical monitoring is not required, the permittee still must conduct semi-
annual qualitative monitoring.] Qualitative monitoring is for the purpose of evaluating the
effectiveness of the Stormwater Pollution Prevention Plan (SPPP) and assessing new sources of
stormwater pollution.
In the event,an atypical condition is noted at a stormwater 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.
Part II Page 9 of 11

T
4.
Color
semi-annual
SDO
Odor
semi-annual
SDO
Clarity
semi-annual
SDO
Floating Solids
semi-annual
SDO
Suspended Solids
semi-annual
SDO
Foam
semi-annual
SDO
Oil Sheen
semi-annual
S O
Erosion or deposition at the
semi-annualAP
outfall
Other obvious indicators
semi-annual
crnn
of stormwater pollution
Footnotes
1 Measurement Frequency, Twice per year c
permit is, issued for this facility or until this
the permittee has submitted the appr� "riate
permittee will be considered fora I
the renewed permit, is issued See Ta
cycle lodq
2 Monitoring Location Quahtatielstztus"I mtori
regardless of representative out
Permit No NCS000546
tat storm event, for each year until either another
ke r rescinded If at the en&of this per_mittmg cycle
Wenewal permit before the submittal deadline, the,
e applicant must continue semi-annual monitoring until
of monitoring periods through the end of this permitting
be performed at each stormwater discharge outfall (SDO)
SECTION D: ON-SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS
Facilities which have any vehicle maintenance activity occurring on-site which uses more than 55
gallons of new motor°oil per month when averaged over the calendar year shall perform
analytical monitoring as,specified below in Table 5. This monitoring shall be performed at all
stormwater discharge outfalls which discharge stormwater runoff from vehicle maintenance areas
and in accordance with the schedule presented'in Table 2 (Section B) All analytical monitoring
shall be performed during a representative storm event
PartII Page 10 of'l l

Permit No NCS000546
Table 5. Analytical Monitoring Re uirements'for On -Site Vehicle Maintenance
H
standard
semi-annual
Grab SDO
Total Petroleum Hydrocarbons
mg/1
semi-annual
Grab SDO
EPA.Method 1664 (SGT HE
Total Suspended Solids
mg/1
semi-annual
Grab SDO
Total Rainfall4
inches
semi-annual
Rain gauge
New Motor Oil Usage
gallons/month
semi-annual
Estimate -
Footnotes
1 Measurement'Frequency 'Twice per year during a represent
permit is issued for this facility or unhl'this,permit is revoke
the permittee has submitted the appropriate paperwork for a
permittee will be considered for a renewal application The
the renewed permit is issued See Table 2 for schedule of
cycle
2 If the, stormwater runoff is controlled by a stormwat det
pond shall be,collected within the first 30 minute di ai
Vie
ch year until either another
Idend ofthispermittingcycle
ere submittal deadline, the
must continue semi-annual monitoring until
nods through the end of this permitting
d a grab sample of the discharge from the
,the pond
3 Sample Location Samples shall be c llected t ch ter discharge outfall (SDO) that discharges
stormwater runoff from area(s) wh is ten activities occur
4 For each sampled representative sto t t precipitation must be recorded An on-site or local rain
gauge reading must be recorded
Monitoring results shall be ,are o the benchmark values in Table 6. The benchmark
values in Table 6 are not pe its but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the
permittee to increase monitoring, increase management actions, mcreasexecord keeping, and/or
install stormwater Best Management, Practices (BMPs), as provided in Part II Section B
6. Benchmark Values for Vehicle
pH (see footnote 1) standard 6 - 9
Total Petroleum Hydrocarbons (TPH) mg/L 15
Total Suspended Solids mz'L 100
Monitoring
Footnotes `
1 If pH values outside this range, arerecorded in,sampled stormwater discharges, but ambient rainfall data
indicate precipitation pH levels are within + 0.1 standard units of the measured values,or lower, then the
lower threshold of,this benchmark range does not apply Readings'from an on-site or'local ram gauge (or local
precipitation data) must be documented to demonstrate background concentrations were below the normal pH
range
Part II Page 11 of'I 1

Permit No NCS000546
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL PERMITS
SECTION A: COMPLIANCE AND LIABILITY
Compliance" Schedule
The permittee shall comply with Limitations and Controls specified for stormwater discharges in
accordance with the followmg,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 permirarid updated thereafter on an annual°basis Secondary contamment,,,as specified'in,Part II,
Section A, Paragraph 2(b) of this permit, shall be accomplished wlthwbl1months of the effectnveAate of
the initial permit issuance Ake
a
NewFacnlitnesiapplying forcoverage forthe first time
applying for renewal under this permit The Stormwat
unplemented,prior to the beginning of discharges fron
updated thereafter on,an annual basis Secondary co
2(b) of this permrt,shall be accomplished prior to
industrial activity
2 Duty to Comply
previously permitted and
Prion Plan shall be developed and
in of the industrial activity and be
specified in Part II, Section A; Paragraph
discharges from the operation of the
The permittee must comply willftwnallAbLof this individual permit Any permit noncompliance
constitutes a violation of the CRuanodification,
d is grounds for enforcement action, for permit
terminatnon,,revocatnon and. or denial of permrt,upon renewal application
a The permittees compl nth standards or prohibitions established under section 307(a) of the
Clean Water A ollutants within the time provnded,in the regulations that establish these
standar&or proh ns, even of the permit has not yet'been modified to'mcorporate,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 violates permit
condrtions+is, subject to crunmal 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, 31,8 or 405 of the,Act, or any permit condition or limitation implementing any
of such sections in�a permit issued under section 402 of the Act Administrative penalties for Class
I violations are not to exceed $10,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $25,000 Penalties for Class II violations are not to exceed
Part III Page 1 of 8

4
7
9
Permit No NCS000546
$1°0,000 per day for each,day during which the violation continues, with the maximum amount of
any Class II penalty not to exceed $125,000
Duty to Mitigate
The permittee 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
Civil and Criminal Liability
Except as.,provided in Part III, 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, 143-215.6B, 143-
215 6C or Section 309 of the Federal Act, 33 USC 1319 Furthermor 'the permittee is responsible, for
consequential,damages, such,as fish kills, even though the respity for effective compliance,may be
temporarily suspended 10
Oil and Hazardous Substance Liability
Nothing in this,individual permit shall be cons
the permittee from any responsibilities, liabilii
under NCGS 143-215 75 et seq or Section 311
Property Rights
The issuance of this individua d
property, or any exclusive privi
personabarights, nor any mfr ement er
Severability
z,institution of any legal action or relieve
✓hich the permittee is or may be subject to
33 USC 1321
onvey any property rights in either real or personal
authorize any injury to private property or any invasion of
State or local Paws or,regulations,
The provisions,of this indvifWperinit are severable, and if any provision of this individual permit, or the
application of any provisiomof 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
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
permit,issued pursuant to this,individual permit or to determine compliance with this individual permit The
permittee shall.also fuinish'to the Director,upon request, copies of records,required to be kept by this
individual permit
Penalties for Tampermg
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 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,committe&after a first
conviction oftsuch person,undet1his paragraph, punishment is a fine of not more that $20,000 per day of
violation, or by'nmprisonment of not more than 4 years, or both
Part III Page 2 of 8

Permit No NCS000546
10 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 individual
permit, including monitoring reports or reports of compliance ormoncompliance 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: GENERAL. CONDITIONS
Individual Permit Expiration
The,permittee is not authorized,to discharge after the expiration dat
authorization to discharge beyond the expiration date, the e
required by the agency'authonzed to issue permits no la
permittee that has not requested renewal at least 180 d s pr to
have a pennit�after the expiration and has not requeste at at 1
subjected to enforcement procedures as provided m N -211
Transfers
This permit�is not transferable to any
Director may require modification or
mcorporate such other requir is i
required to notify the Divisio
Signatory Requirements
All,applications, reports,
All applications
e n order to receive automatic
all submit forms and fees as are
ays pri to the expiration date Any
, or any permittee that does not
e 0 days prior to,expiration, will,be
5.6 and 33 USC 1251 et seq
�otice to and approval by the Director The
suance of the pennit'to change•the name and
under`the Clean Water Act The Permittee is
the permitted facility is sold or closed.
submitted to the Director shall be signed,and certified
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 prmcipal executive officer,
ranking elected official, or,other duly authorized employee
All reports required by the individual permit and other information requested by the Director shall
befsigned by a person described above or by a duly authorized representative of that person A
person;is a duly authorized representative only,if
(1) The authorization is made in writing by a person described above,
(2) Theiauthorization 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 NCS000546
responsibility, or an individual or position havingoverall responsibility for -environmental
matters ,for the company (A,duly authorized representative may thus be either a named
individual orfany individual occupying a named position ), and
(3) The written authorization is submitted to the Director
Any person signing a document under paragraphs a orb of this section shall Emake the 1ollowmg
certification
' I,certify, under penalty of law, that this document and all,attachments were prepared under my
direction or supervision in accordance with a system designed to assure that'qualified personnel
properly gathevand evaluate the mformation submitted Based on,my inquiry of the person or
persons whotmanage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my 0owledge,and belief, true, accurate,
and complete I am aware that there are significant pe for submitting false information,
including the possibility of fines and unpnso fo g violgtions it
The issuance of this individual permit does not proh 'the INWr from reopening and modifying the
individual permit, revoking and reissuing the ind ir terminating the individual permit as
allowed by the laws, rules, and regulations co me _ 0, Code of Federal' Regulations, Parts 122
and 123, Title "15A of the North Carolina im ahv ode, Subchapter 2H 0100, and North Carolina
General Statute 143-215 1 et al
Permit Actions
The permit may be modifiNvokeleissued, or terminated for cause The notification of planned
changes or anticipated,no not stay any individual permit condition
SECTION'C: OPERATION ANINTENANCE 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, instal led,or used by the permittee to achieve compliance with
the conditions of this individual permit Proper operation and maintenance also includes adequate
laboratory controls and appropriate quality assurance procedures This provision requires the operation of
back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation
is necessary to achievescompliance with the conditions of this individual permit
Need to Halt or Reduce Not a Defense
It shall not be a defense foi a permittee in an enforcement action that it would have been nes essary to halt of
reduce,the permitted,activity in,order to maintain compliance with the condition of this individual permit
Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee fof bypass unless
a Bypass was unavoidable to prevent loss of life, personal mjury or- severe property damage, and
Part III Page 4 of 8

Permit No NCS000546
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 backupzontrols 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`E of this permit
If the Director determines that it will meet the three conditions listed above, the Directormay approve an
anticipated 'bypass after considering its adverse effects
SECTION D: MONITORING AND RECORDS
1 Representative Sampling
Samples collected and measurements taken; as require ere , sh acteristic of the volume and
nature of the permitted discharge Analytical sampling a perfo _ during a representative storm
event Samples shall be taken on a day and tune that is ristic of the discharge All samples shall be
taken before the dischargejoins or is diluted by any- ` r w earn, body of water, or substance
Monitoring points as specified in this permit sha an without notification to and approval of
the Director
2 Recording Results
For each,measurement, sample, cti aintenance activity performed or collected,pursuantxto the
requirements of this individual et ittee shall record the following information
a The date, exact p e, and t f sampling, measurements, inspection or maintenance activity,
b The individual( ormed 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
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
4 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
Part III Page 5 of 8

Permit No NCS000546
To meet the intent of the monitormg,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
Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater discharges that are
required to be sampled, the,pe_rmittee may petition the Director for representative outfall status If it is
established that the stormwater discharges are,substantially identical and the'permittee is granted
representative outfall status, then sampling requirements may be performed ata reduced number of outfalls
Records Retention
Visual monitoring shall be documented and records maintained at
Pollution Prevention Plan Copies of analytical momtorm led
permittee shall retain records of,all monitoring informat ,
records and all original strip chart,recordings for con ous
reports required by this individual permit for a period
measurement, report,or application This period may, b
Inspection and Entry
the cility along with the Stormwater
all also be maintained on-site The
all cal ration and mamtenance
mentation, and copies,of all
ye om the date of the sample, -
by request of the Director at any time
The permittee shall allow the Director, or ag&thlfzed presentative (including an authorized contractor
acting as a representative of the Duector , in dLQUfof a facility which discharges through a municipal
separate storm,sewer sy st'em,'AuthooMeprative of a municipal operator or the separate storm
sewer system receiving1he dis 7une
resentation,of credentials,and other documents as may be
required by law, to,
a Enter upon the7p ittee's prre a regulated facility or activity is located or conducted,
or where record ust be conditions of this individual permit,
b Have access to an y, at reasonable tunes, any records that,,must be kept under the conditions of
this individual permit,
c Inspect at reasonable tunes any facilities, equipmentl(including monitoring and control equipment),
practices, or operations regulated or required under this individual permit,,and
d Sample orimonitor at reasonable tunes, for the purposes of assurmg individual permit compliance
oras otherwise,,authorized by the Clean Water Act, any substances or parameters,at any location
SECTION,E: REPORTING REQUIREMENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the Division on
Discharge Monitormg,Report (DMR) 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
When no discharge has occurred from the facility during the report period, the permittee is required to
submit a discharge monitoring report within 30 days of the end of the,three-monthsamplmg,period, giving
all required information,and indicating "NO FLOW" as per`NCAC T15A 02B 006— S,X -nwni �t
Part III Page,6 of 8

Permit No. NCS000546
The permittee shall record the required qualitative monitoring observations on the SDO Qualitative
Monitoring Report (QMR) form provided by the Division, and shall retain the completed forms on site.
Qualitative monitoring results should not be submitted to the Division, except upon DWQ's specific
requirement to do so.
Submitting Reports
Duplicate signed copies of all reports required herein, shall be submitted to the following address:
Division of Water Quality
Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
In addition, a separate signed Annual Summary DMR f
bmitt to the permittee's DWQ
Regional Office (RO) by March 1 of each year.
Availability of Resorts
Except for data determined to be confidential un 14 15.3(a)(2) or Section 308 of the Federal
Act, 33 USC 1318, all reports prepared in acc an terms shall be available for public inspection
at the offices of the Division of Water Quali A equ' by the Act, analytical data shall not be
considered confidential. Knowingly mak' any, is tement on any such report may result in the
imposition of criminal penalti pr for GS 143-215.613 or in Section 309 of the Federal Act.
4. Non-Stormwater Discharges
If the storm event monitor in accor a with this individual permit coincides with a non-stormwater
discharge, the permittee 1 separa y monitor all parameters as required under the non-stormwater
discharge permit and pro ormation 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 at the 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.
7. 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.
Part III Page 7 of 8

1'0
Permit No NCS000546
Twenty-four Hour Reportmg
The permittee shall^report,to the,central office or,the appropnate regional office any noncompliance which
may,endanger health or the environment Any information shall be provided orally withm,24 hours from
the tunelhe 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 contam a descnption, of the noncompliance, ,and its causes, the period of
noncompliance, mcludmg exact dates and tunes, and if the noncompliance has not been corrected, the
anticipated time compliance is expected to contmue, and steps taken or planned to reduce, eliminate, and
prevent,reoccurrence of the noncompliance
The Director may waive the written report oil a case-by-case basis if the oral report has been received
within 24 hours .A►
Other Noncompliance
The permittee shall report all instances of
monitoring reports are submitted
Other Information
Where the permittee becomes aware that it
individual permit or in any report to the pi
24 hourreportmg at the tune
fit any relevant facts in an application for an
promptly submit such facts or information
Part III Page 8 of 8

NCS000546
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,Sections 302(b) (2) (c), and (d), 304(b) (2) and
307(a) of the Clean Water Act, if the effluent.guidelme or water quality standard so issued or approved
b
Contains different conditions,or is otherwise more stringent than any effluent limitation in the individual
permit, or
Controls any pollutant not i1 mited m the individual permit
The,individual permit as modified or reissued under this
Act then applicable
PART V
The permittee must pay the administering and,
the Division Failure to pay the fee m ely r,
Division to initiate action to revoke th u
Act
See Clean Water Act
2 Arithmetic Mean
other requirements in the
MONITORING FEE
ig fee within 30 (thirty) days after being billed by
With 15A NCAC 2H 01105(b)(4) may cause this
The arithmetic mean of any set of values is the summation of the individual values divided by the number of
individual values
Allowable Non-Stormwater Discharaes
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-condrt.oner 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
(c) Discharges resulting from fire -fighting or fire -fighting training
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.
Parts SIV, V sand VI Page 1 of 5

5
6
7
,g
9
10
11
12
13
14
15
Permit No NCS000546
Bypass
A bypass is the known diversiomof 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
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;gallon&or with multiple abovebground storage
containers located in close proximity to each other having,a total combined storage = capacity of greater than
1,320 gallons
Clean Water Act
The Federal Water Pollution Control Act, also known
USC 1251, et seq
Division or DWO
The Division of Water Quality, Department of Epdq
Director
The Director of the Division gfiWter4Mty,
EMC
The North Carolina En
Grab<Sample
(CWA), as amended, 33
atural Resources
issumg,authonty
Commission
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
Hazardous Substance
Any substanceAesignated under 40 CFR Part 116 pursuant to Section 311 of the Clean, Water Act
Landfill
A,disposal facility or part of a disposal facility where waste is placed in or on jand and which is not a land
treatment facility,,a surface impoundment, an mjection well, a,hazardous waste long-term storage facility or
a surface storage facility
Municipal Separate Storm SewenSystem
A stormwater collection system within an incorporated area of local self-government such as a city or town
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, snowmelt, or runoff
Industrial materials or activities include, but are=not lunited to, material handling equipment or activities,
Part VI Page 2 of 5 Pages

16
17
18
19
20
21
22
23
Permit No NCS000546
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)
Overburden
Any material of any nature, consolidated or unconsolidated, that overlies a mineral deposit, excluding
topsoil or similar naturally -occurring surface materials that are not disturbed,by mining operations
Peirrmrtee
The owner or operator issued a permit pursuant to this individual permit
Pomt Source Discharge of Stormwater 10
Any discernible, confined and discrete cbnveyance'incl g„' specifi my lunrted,to, any'pipe, ditch,
charnel, tunnel, conduit, well, or discrete fissure from ich i r ay be discharged to waters
of the stateML
Representative Storm Event
A storm event that measuresgreater than 0/ra
es and that -is precede&by at least 72 hours in which no
storm event, measuring greater than 0 1 inc ccrd A single storm event may,contain up to 10 consecutive
hours of no precipitation For example,,lf ours without producmg any collectable discharge, and then
stops, a sample maybe collec a r odu , _ discharge�begins again withm the,next 10 hours
Representative Outfall Status dRM
When it is established,tha a dischar f stormwater'runottfrom &single outtall is representative of the
discharges at multiple ou Is, the Q may grant representative outfall status Representative outfall
status allows the permitt analytical monitoring at a reduced number of outfalls
Rinse Water Discharge
The,discharge of rinse water from equipment cleaning areas associated with industrial activity Rinse
waters from vehicle and.equipment cleaning areas are process wastewaters and do not include washwaters
utilizmg,any type of detergent or cleaning agent
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
Section 313 Water Priority Chemical
A chemical or chemical category which
Is listed in 40'CFR 372 65 pursuant to Section 313 of Title IlI 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
Part VI Page 3 of 5 Pages

24
25
Permit No NCS000546
That meets at least one of the following criteria
(1) Is listed m4Appendix 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 3111(b)(2)(A) of the, CWA at40
CFR 116 4, or
(3) Is a pollutant,for which EPA has published acute,or chronic water quality criteria
Severe Property Damage
Means substantial physical daniage,to property, damage4o the contro acilities which causes them to
become inoperable, or substantial and permanent loss of n tura ces which can reasonably be
expected to occur in the absence of a bypass Severe pr does t mean economic loss caused
by delays in production
Significant Materials
Includes, but is notlumted,to raw materials, fug is s as solvents, detergents, and plastic
pellets, finished materials such as metallic pro cts ials used in food processing or production,
hazardous substances designated under sec 10 14) CERCLA, any chemical the facility is required to
report pursuant to section 313 of Title II SA lizers, pesticides„and waste producrosuch as ashes,
slag and sludge that have the tia rete with stormwater discharges
26 Significant Spills
27
28
25
30
Includes, but is not limitec# release oYoil or hazardous substances in excess of reportable quantities
under section 311 of the &an Wat Act (Ref 40 CFR 1,10 10 and CFR 117 21) or section 102 of
CERCLA (Ref 40 CFR
Stormwater Runoff
The flow of water which,results,from,precipitation and which occur&unmediately following rainfall or as a
result of snowmelt
Stormwater Associated'with Industrial Active
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 term does not include discharges from facilities or activities excluded from,the NPDES program
Stormwater Pollution Preveation Pian
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
Ten Year Design Storm
The maximum 24 hour precipitation event expected to be,equaled or exceeded on the average once,m ten
years Design storm information can be found,m the State of North Carolina Erosion,and'Sedunent Control
Planning and Design Manual
Part VI Page 4 of 5 Pages

31
32
Permit No NCS000546
Total Flow
The flow corresponding to the time period over which the entire storm event occurs Total flow shall be
either, (a)�measured continuously, (b) calculated based on the amount of area draining to the outfall, the
amount of built -upon (impervious) area, and the total amount of rainfall, or (c) estimated by the
measurement of flow at 20,mmute mtervals during the rainfall event
Total Maxunum,Daily Load (TMDL)
A TMDL is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet
water quality standards, and an allocation of that amount to the pollutant's sources A TMDL is a detailed
water quality assessment that provides the scientific foundation for an implementation plan The
implementation plan outlines the steps necessary to reduce pollutant 11aads in a certain body of water to
restore and mamtam water quality standards in all seasons ThWater Act, Section 303, establishes
the water quality7standards and TMDL programs�O it I
33 Toxic Pollutant
34
35
36
37
Any pollutant listed as toxic under Section 307(a)(1he OWater Act
Upset
Means an exceptional incident in which jhAFe is conal and temporary noncompliance with
technology based permrtvefflXfaa
be of factors beyond the reasonable,control of the
permittee An upset does niance to the extent' caused by operational error, improperly
designed treatment, or contrate treatment or control facilities, lack,of preventive
mamtenance, or careless orion
Vehicle rehabilitation, me cal repairs, painting, fueling, lubrication, vehicle cleanmg operations, or
airport deicm&operations-
Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air,
gravity, or ice from its site of origin which can be seen with the unaided eye
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 VI Page 5 of,5 Pages