AQ_F_1300104_20130314_PRMT_Permit

Air.�i
MDENR
North Carolina Department of Environment and Natural Resources
Division of Air Quality
Pat McCrory Sheila C. Holman John E. Skvarla, III
Governor Director Secretary
March 14, 2013
Mr. Bob Pate
Electric Director
Concord City Generating Plant#2
850 Warren C. Coleman Boulevard
Concord,NC 28025
Subject: Air Permit No. 07645R06
Concord City Generating Plant#2
Concord, Cabarrus County,North Carolina
Permit Class: Synthetic Minor
Facility ID# 1300104
Dear Mr. Pate:
In accordance with your completed application received February 18, 2013, we are
forwarding herewith Permit No. 07645R06 to Concord City Generating Plant#2, Concord,
Cabarrus County,North Carolina for the construction and operation of air emissions sources or air
.cleaning devices and appurtenances. Additionally, any emissions activities determined from your air
permit application as meeting the exemption requirements contained in 15A NCAC 2Q .0102 have
been listed for information purposes as an "ATTACHMENT" to the enclosed air permit. Please note
the records retention requirements are contained in General Condition 2 of the General Conditions
and Limitations.
If any parts,requirements, or limitations contained in this permit are unacceptable to you,
you have the right to request a formal adjudicatory hearing within 30 days following receipt of this
permit, identifying the specific issues to be contested. Such a request will stay the effectiveness of
the entire permit. This hearing request must be in the form of a written petition, conforming to G.S.
150B-23 of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, 6714 Mail Service Center,Raleigh,NC 27699-6714. The form for requesting a formal
adjudicatory hearing may be obtained upon request from the Office of Administrative Hearings.
Unless a request for a hearing is made pursuant to G.S. 15013-23,this air permit shall be final and
binding.
You may request modification of your air permit through informal means pursuant to G.S.
15013-22. This request must be submitted in writing to the Director and must identify the specific
Mooresville Regional Office-Division of Air Quality
610 East Center Avenue,Suite 301,Mooresville,North Carolina 28115
Phone:[phone] FAX:[phone]
Internet:www.ncair.o[g.
An Equal Opportunity 1 Affirmative Action Employer-Made in part by Recycled Paper

Bob Pate
March 14, 2013
Page 2
provisions or issues for which the modification is sought. Please note that the permit will become
final and binding regardless of a request for informal modification unless a request for hearing is
also made under G.S. 150B-23.
Unless exempted by a condition of this permit or the regulations, construction of new
air pollution sources or air cleaning devices, or modifications to the sources or air cleaning
devices described in this permit must be covered under a permit issued by the Division of Air
Quality prior to construction. Failure to do so is a violation of G.S. 143-215.108 and may
subject the Permittee to civil or criminal penalties as described in G.S. 143-215.114A and 143-
215.114B.
This permit shall be effective from March 14, 2013 until February 28, 2018, is
nontransferable to future owners and operators, and shall be subject to the conditions and limitations
as specified therein.
Changes have been made to the permit stipulations. The Permittee is responsible for
carefully reading the entire permit and evaluating the requirements of each permit
stipulation. The Permittee shall comply with all terms, conditions, requirements, limitations
and restrictions set forth in this permit. Noncompliance with any permit condition is grounds'
for enforcement action, for permit termination, revocation and reissuance, or modification, or
for denial of a permit renewal application. Specific changes and additions are summarized
below (note: this list may not include all changes and additions):
• A condition for the generator MACT, 15A NCAC 2D .1111, "Maximum Achievable Control
Technology",was added to the permit.
• A condition for catalytic oxidizer requirements was added to the permit since the facility is
adding six(6)new catalytic oxidizers to comply with NESHAP, Subpart ZZZZ.
Should you have any questions concerning this matter,please contact Jennifer Womick at(704)
663-1699.
Sincerely,
Ronald E. Slack
Regional Air Quality Supervisor
JAW
Enclosures
c: Mooresville Regional Office
G:\DAQ\VYTDATA\COUNTIES\CABARRUS\00104\RO6—PERMIT.docx

NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF AIR QUALITY
AIR PERMIT NO. 07645R06
Issue Date: March 14, 2013 Effective Date: March 14, 2013
Expiration Date: February 28, 2018 Replaces Permit: 07645R05
To construct and operate air emission source(s) and/or air cleaning device(s), and for the
discharge of the associated air contaminants into the atmosphere in accordance with the provisions
of Article 2 1 B of Chapter 143, General Statutes of North Carolina(NCGS) as amended, and other
applicable Laws,Rules and Regulations,
Concord City Generating Plant#2
211 Manor Avenue, SW
Concord, Cabarrus County,North Carolina
Permit Class: Synthetic Minor
Facility ID# 1300104
(the Permittee) is hereby authorized to construct and operate the air emissions sources and/or air
cleaning devices and appurtenances described below:
Emission Emission Source Control Control System
Source ID E Description System ID Description
_....... ..........___.__.__._._. __ _ ;. _._....... __ .W .. _.sc _.
1I stationary No.2 fuel oil-
CD-1 catalytic oxidizer(up to 1.5
fired reciprocating diesel 1 cubic feet of oxidation
engine(2,304 maximum catalyst)
brake horsepower)
2 stationary No.2 fuel oil- CD-2 catalytic oxidizer(up to 1.5�
fired reciprocating diesel i cubic feet of oxidation
engine(2,304 maximum I catalyst)
brake horsepower)
_ _...... .. __......_ 3 ......__..__. ._..._.. ....,....
3 E stationary No.2 fuel oil- CD-3 catalytic oxidizer(up to 1.5
fired reciprocating diesel cubic feet of oxidation
engine(2,304 maximum catalyst)
........
brake horsepower)
_________..___..____:.-_e� -------------- __ _-r-_. ..._ -�......___....__...�. --,..--.::-
4 `stationary No.2 fuel oil- CD-4 catalytic oxidizer(up to 1.5 1
fired reciprocating diesel cubic feet of oxidation
engine(2,304 maximum ? catalyst)
1 brake horsepower)......

Permit No. 07645R06
Page 2
.........._ ........ .. ............... .
Emission Emission Source ' Control Control System
Source ID Description System ID Description
._ _._.._._. . _...___ _.. _.._... . �._.....__ ..__. ..
5 stationary No.2 fuel oil- CD-5 catalytic oxidizer(up to 1.5
fired reciprocating diesel s cubic feet of oxidation
engine(2,304 maximum catalyst)
brake horsepower)
_. _.._ _ __.._ ._.__._. .._
6 stationary No.2 fuel oil- CD-6 catalytic oxidizer(up to 1.5
fired reciprocating diesel cubic feet of oxidation
engine(2,304 maximum catalyst)
brake horsepower)
........ ...
in accordance with the completed application 1300104.13A received February 18, 2013 including
any plans, specifications,previous 4pplications, and other supporting data, all of which are filed
with the Department of Environment and Natural Resources, Division of Air Quality(DAQ) and are
incorporated as part of this permit.
.This permit is subject to the following specified conditions and limitations including any
TESTING, REPORTING, OR MONITORING REQUIREMENTS:
A. SPECIFIC CONDITIONS AND LIMITATIONS
1. Any air emission sources or control devices authorized to construct and operate above must
be operated and maintained in accordance with the provisions contained herein. The
Permittee shall comply with applicable Environmental Management Commission
Regulations, including Title 15A North Carolina Administrative Code (NCAC), Subchapter
2D .0202, 2D .0400, 2D .0516, 2D .0521, 2D .0535, 2D .0540, 2D .0611, 2D .1111 (40 CFR
63, Subpart ZZZZ), 2D .1400, 2Q .0315 and 2Q .0317 (Avoidance).
2. PERMIT RENEWAL AND EMISSION INVENTORY REQUIREMENT - The Permittee,
at least 90 days prior to the expiration date of this permit, shall request permit renewal by
letter in accordance with 15A NCAC 2Q .0304(d) and(f). Pursuant to 15A NCAC 2Q
.0203(i), no permit application fee is required for renewal of an existing air permit(without
a modification request). The renewal request(with AA application form) should be
submitted to the Regional Supervisor, DAQ. Also, at least 90 days prior to the expiration
date of this permit,the Permittee shall submit the air pollution emission inventory report
(with Certification Sheet) in accordance with 15A NCAC 2D .0202, pursuant to N.C.
General Statute 143 215.65. The report shall be submitted to the Regional Supervisor, DAQ
and shall document air pollutants emitted for the 2016 calendar year.
3. LIMITATION TO AVOID VIOLATION OF 15A NCAC 2D .0407 "NITROGEN
DIOXIDE" - To comply with this permit and in order to assure compliance with the
National Ambient Air Quality Standard(NAAQS) for nitrogen dioxide of 0.53 parts per
million (100 micrograms per cubic meter) annual arithmetic mean, as requested by the
Permittee, nitrogen dioxide emissions from the six(6)No. 2 fuel oil-fired reciprocating
diesel engines (ID Nos. 1 through 6) shall be less than 105 tons per consecutive twelve(12)
month period.

Permit No. 07645R06
Page 3
a. To ensure enforceability of this limit,the following restrictions shall apply:
i. Total facility-wide engine-hours of operation shall not exceed 4,093 hours.
b. The engine-hours of operation recordkeeping and reporting requirements in
Stipulation A.12. will be adequate to demonstrate compliance with this limitation
4. LIMITATION TO AVOID VIOLATION OF 15A NCAC 2D .0402 "SULFUR OXIDES" -
To comply with this permit and the 24-hour National Ambient Air Quality Standard
(NAAQS) for sulfur dioxide,the sulfur content of the fuel oil fired in the six (6)No. 2 fuel
oil-fired reciprocating diesel engines (ID Nos. 1 through 6) shall not exceed 0.5%by weight.
The recordkeeping and reporting requirements for fuel oil supplier certification in
Stipulation A.12. will be adequate to demonstrate compliance with this limitation.
5. SULFUR DIOXIDE CONTROL REQUIREMENT-As required by 15A NCAC 2D .0516
"Sulfur Dioxide Emissions from Combustion Sources," sulfur dioxide emissions from the
combustion sources shall not exceed 2.3 pounds per million Btu heat input.
6. VISIBLE EMISSIONS CONTROL REQUIREMENT-As required by 15A NCAC 2D
.0521 "Control of Visible Emissions," visible emissions from the emission sources,
manufactured after July 1, 1971, shall not be more than 20 percent opacity when averaged
over a six-minute period, except that six-minute periods averaging not more than 87 percent
opacity may occur not more than once in any hour nor more than four times in any 24-hour
period. However, sources which must comply with 15A NCAC 2D .0524 "New Source
Performance Standards" or .I 110 "National Emission Standards for Hazardous Air
Pollutants" must comply with applicable visible emissions requirements contained therein.
7. NOTIFICATION REQUIREMENT -As required by 15A NCAC 2D .0535, the Permittee of
a source of excess emissions that last for more than four hours and that results from a
malfunction, a breakdown of process or control equipment or any other abnormal
conditions, shall:
a. Notify the Director or his designee of any such occurrence by 9:00 a.m. Eastern time
of the Division's next business day of becoming aware of the occurrence and
describe:
i. the name and location of the facility,
ii. the nature and cause of the malfunction or breakdown,
iii. the time when the malfunction or breakdown is first observed,
iv. the expected duration, and
V. an estimated rate of emissions.

Permit No. 07645R06
Page 4
b. Notify the Director or his designee immediately when the corrective measures have
been accomplished.
This reporting requirement does not allow the operation of the facility in excess of
Environmental Management Commission Regulations.
8. FUGITIVE DUST CONTROL REQUIREMENT -As required by 15A NCAC 2D .0540
"Particulates from Fugitive Dust Emission Sources," the Permittee shall not cause or allow
fugitive dust emissions to cause or contribute to substantive complaints or excess visible
emissions beyond the property boundary. If substantive complaints or.excessive fugitive
dust emissions from the facility are observed beyond the property boundaries for six minutes
in any one hour(using Reference Method 22 in 40 CFR, Appendix A),the owner or
operator may be required to submit a fugitive dust plan as described in 2D .0540(f).
"Fugitive dust emissions" means particulate matter that does not pass through a process
stack or vent and that is generated within plant property boundaries from activities such as:
unloading and loading areas,process areas stockpiles, stock pile working,plant parking lots,
and plant roads(including access roads and haul roads).
9. CATALYTIC OXIDIZER REQUIREMENTS - As required by 15A NCAC 2D .0611,
emissions shall be controlled as described in the permitted equipment list.
a. Inspection and Maintenance Requirements -The inspection, maintenance and record
keeping requirements shall become effective April 13, 2013. To comply with the
provisions of this permit and ensure that emissions do not exceed the regulatory
limits,the Permittee shall establish an inspection and maintenance (I&M)
schedule/checklist based on manufacturer's recommendations. As a minimum,the
I&M program will include an annual (for each 12 month period following the initial
inspection) internal inspection of the primary heat exchanger and associated
inlet/outlet valves to ensure structural integrity.
b. Recordkeeping Requirements -The results of all inspections and any variance from
manufacturer's recommendations or from those given in this permit(when
applicable) shall be investigated with corrections made and dates of actions recorded
in a logbook. Records of all maintenance activities shall be recorded in the logbook.
The logbook(in written or electronic form) shall be kept on-site and made available
to DAQ personnel upon request.
10. 15A NCAC 2D .1111 "MAXIMUM ACHIEVABLE CONTROL TECHNOLOGY" for the
diesel engine(ID No. 1), diesel engine (ID No. 2), diesel engine (ID No. 3), diesel engine
(ID No. 4), diesel engine (ID No. 5) and diesel engine (ID No. 6), which is considered an
existing, non-emergency, non-black start, compression ignition(CI) reciprocating internal
combustion engine (RICE) greater than 500 brake horsepower,the Permittee shall comply
with all applicable provisions, including the notification,testing, recordkeeping, reporting
and monitoring requirements contained in Environmental Management Commission
Standard 15A NCAC 2D .1111, "Maximum Achievable Control Technology" as
promulgated in 40 CFR 63, Subpart ZZZZ, "National Emissions Standards for Hazardous

Permit No. 07645R06
Page 5
Air Pollutants for Stationary Reciprocating Internal Combustion Engines",including
Subpart A "General Provisions."
a. Compliance Date - Pursuant to 40 CFR 63.6595(a)(1), the source(s) shall be in
compliance with 40 CFR 63, Subpart ZZZZ by May 3, 2013.
b. Emission Limits Pursuant to 40 CFR 63.6603(a); the affected source must comply
with the following emission limits, except during periods of startup:
i. The concentration of carbon monoxide(CO) in the exhaust cannot exceed 23
ppmvd at 15 percent oxygen; or
ii. Reduce CO emissions by 70 percent or more; or
iii. If the engine is certified to the Tier 3 (Tier 2 for engines above 560 kW)
emission standards in Table 1 of 40 CFR 89.112,the Permittee may comply
with the requirements under NESHAP Subpart ZZZZ by meeting the
requirements for Tier 3 engines (Tier 2 for engines above 560 kW) in 40 CFR
part 60 Subpart IIII instead of the emission limitations and other requirements
that would otherwise apply under NESHAP Subpart ZZZZ for existing non-
emergency CI RICE with a site rating of more than 500 brake HP located at
an area source of HAP emissions.
c. Testin - Pursuant to 40 CFR 63.6612(a), 63.6615, 63.6620, 63.6630, 63.6640, and
63.6645 the Permittee shall:
i. Conduct an emission test per 40 CFR 63.6620 and Table 4 of 40 CFR 63
Subpart ZZZZ within 180 days after the compliance date.
ii. Per 40 CFR 63.6630(b), during the initial performance test,the Permittee
shall establish each operating limitation identified in Table 2b of 40 CFR 63
Subpart ZZZZ (summarized below):
For each CI RICE 'The Permittee shall establish and record during
com 1 m with initial performance testing the following
p y g the requirement to . . . operating
limitations . . .
Reduce CO emissions
and using an oxidation .The pressure drop across the catalyst and the
catalyst; temperature at the catalyst inlet.
�OR The temperature for the catalyst inlet must be
Limit the concentration greater than or equal to 450 °F and less than or
of CO in the RICE equal to 1350 'F. The Permittee may petition the
exhaust by using an director of DAQ pursuant to the requirements of
oxidation catalyst 40 CFR 63.8(f) for a different temperature range.

Permit No. 07645R06
Page 6
educe CO emissions
and not using an
oxidation catalyst;
Or
Comply with any operating limitations approved
Limit the concentration y the DAQ Regional Supervisor.
of CO in the RICE
exhaust and not using an
oxidation catalyst
Per 40 CFR 63.6620(f), if complying with the emission limitation to reduce
CO in the exhaust without using an oxidation catalyst the Permittee shall
petition the DAQ Regional Supervisor for operating limitations to be
established during the initial performance test and continuously monitored
thereafter, or for approval of no operating limitation. The Permittee shall not
conduct the initial performance test until after the petition has been approved
by the Regional Supervisor. The petition must include the information
described in 40 CFR 63.6620(g) or(h).
iii. Per 40 CFR 63.6620(i), the engine percent load during a performance test
must be determined by documenting the calculations, assumptions, and
measurement devices used to measure or estimate the percent load in a
specific application. A written report of the average percent load
determination must be included in the notification of compliance status. The
following information must be included in the written report: the engine
model number, the engine manufacturer,the year of purchase,the
manufacturer's site-rated brake horsepower,the ambient temperature,
pressure, and humidity during the performance test, and all assumptions that
were made to estimate or calculate percent load during the performance test
must be clearly explained. If measurement devices such as flow meters,
kilowatt meters,beta analyzers, stain gauges, etc. are used, the model number
of the measurement device, and an estimate of its accuracy in percentage of
true value must be provided.
iv. The Permittee shall perform such testing in accordance with 40 CPR 63.6645
and 15A NCAC 2D .2600 (see GENERAL EMISSIONS TESTING AND
REPORTING REQUIREMENTS in Section B. of this Air Permit). The
procedures are outlined below:
A. The Permittee shall notify DAQ in writing of their intent to conduct
the performance test and submit a completed Protocol Submittal Form
to the DAQ Regional Supervisor at least 60 days before the scheduled
performance test in accordance with 40 CFR 63.6645(g) and 40 CFR
63.7(b)(1).

Permit No. 07645R06
Page 7
B. The Permittee shall notify the Regional Supervisor of the specific test
dates at least 15 days prior to testing in order to afford the DAQ the
opportunity to have an observer on-site during the sampling program.
If a specific test date cannot be identified due to the operational
requirements of the RICE,then the Permittee shall notify the Regional
Supervisor of the approximate test date. If a specific test date is
identified within the 15 day notification timeframe identified above,
then the Permittee must notify the Regional Supervisor as soon as the
test date is determined.
C. The Permittee shall submit two copies of the test report to the DAQ.
The test report shall be submitted to the Regional Supervisor- DAQ
not later than 60 days after completion of testing. The Permittee may
request an extension to submit the final test report. The DAQ
Regional Supervisor will approve an extension request if it is
determined that the extension request is a result of actions beyond the
control of the Permittee. The test report shall contain at a minimum
the following information:
I. a description of the training and air testing experience of the
person directing the test;
II. a certification of the test results by the sampling team leader
and facility representative;
III. a summary of emissions results and text detailing the
objectives of the testing program,the applicable state and
federal regulations,and conclusions about the testing and
compliance status of the emission source(s);
IV. a detailed description of the tested emission source(s),process
flow diagrams, engineering drawings, and sampling location
schematics should be included as necessary;
V. all field, analytical, and calibration data necessary to verify
that the testing was performed as specified in the applicable
test methods;
VI. example calculations for at least one test run using equations
in the applicable test methods and all test results including
intermediate parameter calculations.
D. The testing requirernent(s) shall be considered satisfied only upon
written approval of the test results by the DAQ.
E. The DAQ will review emission test results with respect exclusively to
the specified testing objectives as proposed by the Permittee and
approved by the DAQ.

Permit No. 07645R06
Page 8
d. Initial Compliance Demonstration -Pursuant to 40 CFR 63.6630(a), initial
compliance for each existing,non-emergency, non-black start, compression ignition
reciprocating internal combustion engine greater than 500 brake horsepower is
provided in Table 5 of 40 CFR 63 Subpart ZZZZ and shall be demonstrated as
follows:
For each CI RICE complying The Permittee will demonstrate initial compliance if. .
with the requirement to
. ....._..... _ ........... _ M _
i. The average reduction of emissions of CO determined from the
initial performance test achieves the required CO percent
eduction; and
Reduce CO emissions and using
Ian oxidation catalyst, and using ii. The Permittee has installed a CPMS to continuously monitor
a continuous parameter catalyst inlet temperature according to the requirements in
monitoring system (CPMS) §63.6625(b); and
iii. The Permittee has recorded the catalyst pressure drop and
catalyst inlet temperature during the initial performance test.
i. The average CO concentration determined from the initial
performance test is less than or equal to the CO emission
limitation; and
imit the concentration of CO, ii. The Permittee has installed a CPMS to continuously monitor
using an oxidation catalyst, and 'catalyst inlet temperature according to the requirements in
using a CPMS §63.6625(b); and
.iii The Permittee has recorded the catalyst pressure drop and
catalyst inlet temperature during the initial performance test._
i. The average reduction of emissions of CO determined from the
initial performance test achieves the required CO percent
eduction; and
Reduce CO emissions and not ii. The Permittee has installed a CPMS to continuously monitor
;using an oxidation catalyst operating parameters approved by the Administrator(if any)
according to the requirements in §63.6625(b); and
iii. The Permittee has recorded the approved operating parameters
.(if any) during the initial performance test.
i. The average CO.concentration determined from the initial
performance test is less than or equal to the CO emission
limitation; and
'Limit the concentration of CO
land not using an oxidation ii. The Permittee has installed a CPMS to continuously monitor
catalyst operating parameters approved by the Administrator(if any)
according to the requirements in §63.6625(b); and
iii. The Permittee has recorded the approved operating parameters
_ ........ pp P g

Permit No. 07645R06
Page 9
For each CI RICE complying The Permittee will demonstrate initial compliance if. . .
with the requirement to . . .
(if any) during the initial performance test.
i. The Permittee has installed a CEMS to continuously monitor
CO and either 02 or CO2 at both the inlet and outlet of the
�oxidation catalyst according to the requirements in §63.6625(a);
and
ii. The Permittee has conducted a performance evaluation of the
Reduce CO emissions and using�a CEMS CEMS using PS 3 and 4A of 40 CFR part 60, appendix B; and
iii. The average reduction of CO calculated using §63.6620 equals
or exceeds the required percent reduction. The initial test .
comprises the first 4-hour period after successful validation of the
CEMS. Compliance is based on the average percent reduction
achieved during the 4-hour period
i. The Permittee has installed a CEMS to continuously monitor
CO and either 02 or CO2 at the outlet of the oxidation catalyst
according to the requirements in §63.6625(a); and
ii. The Permittee has conducted a performance evaluation of the
Limit the concentration of CO CEMS using PS 3 and 4A of 40 CFR part 60, appendix B; and
and using a CEMS
ill. The average concentration of CO calculated using §63.6620 is
3
less than or equal to the CO emission limitation.The initial test
comprises the first 4-hour period after successful validation of the
CEMS. Compliance is based on the average concentration
easured during the 4-hour period
e. Operating Requirements - Pursuant to 40 CFR 63.6603(a), 63.6604, and
63.6625(b), (g), and(h),the Permittee shall:
i. Minimize the engine's time spent at idle during startup and minimize the
engine's startup time to a period needed for appropriate and safe loading of
the engine, not to exceed 30 minutes, after which time the non-startup
emission limitations apply.
ii. If the engine is not equipped with a closed crankcase ventilation system the
Permittee shall:
A. Install a closed crankcase ventilation system that prevents crankcase
emissions from being emitted; or
B. Install an open crankcase filtration emission control system that
reduces emissions from the crankcase by filtering the exhaust stream
to remove oil mist,particulates, and metals.

Permit No. 07645R06
Page 10
iii. Follow the manufacturer's maintenance requirements for operating and
maintaining the open or closed crankcase ventilations system and replacing
crankcase filters.
iv. If the engine displacement is less than 30 liters per cylinder then the
Permittee must use diesel fuel that meets the requirements in 40 CFR
80.510(b) for nonroad diesel fuel.
;Sulfur content 15 ppm maximum.
3
lCetane index or A minimum cetane index of 40; or
?Aromatic content A maximum aromatic content of 35 volume percent.
f. Monitoring Requirements -
i. Pursuant to 40 CFR 63.6603(a), the Permittee shall meet each operating
limitation as follows:
4YFor each CI RICE The Permittee shall meet the following
complying with operating
the requirement to . . limitation . .
a. maintain the catalyst so that the pressure drop
Reduce CO emissions and 'across the catalyst does not change by more than
sing an oxidation catalyst;''2 inches of water from the pressure drop across
he catalyst that was measured during the initial
OR performance test; and
Limit the concentration of b. maintain the temperature of the RICE exhaust
CO in the RICE exhaust so that the catalyst inlet temperature is greater
land using an oxidation than or equal to 450 °F and less than or equal to
;catalyst 1350 'F. The Permittee may petition the director
of DAQ pursuant to the requirements of 40 CFR
... .
63.8(g) for a different temperature range.
Reduce CO emissions and
of using an oxidation
catalyst;
OR Comply with any operating limitations approved
Limit the concentration of y the Regional Supervisor-DAQ.
CO in the RICE exhaust
and not using an oxidation
!catalyst

Permit No. 07645R06
Page 11
ii. Pursuant to 63.6625(b), if the Permittee is required to install a continuous
parameter monitoring system (CPMS) as specified in the table in Section d.
"Initial Compliance Demonstration" above,the Permittee shall install,
operate, and maintain each CPMS according to the following requirements:
A. The Permittee shall prepare a site-specific monitoring plan that
addresses the monitoring system design, data collection, and the
quality assurance and quality control elements outlined below and in
§63.8(d). As specified in §63.8(f)(4), the Permittee may request
approval of monitoring system quality assurance and quality control
procedures alternative to those specified below in the site-specific
monitoring plan.
I. The performance criteria and design specifications for the
monitoring system equipment, including the sample interface,
detector signal analyzer, and data acquisition and calculations;
II. Sampling interface (e.g., thermocouple) location such that the
monitoring system will provide representative measurements;
III. Equipment performance evaluations, system accuracy audits,
or other audit procedures;
IV. Ongoing operation and maintenance procedures in accordance
with provisions in 40 CFR 63.8(c)(1)(ii) and(c)(3); and
V. Ongoing reporting and recordkeeping procedures in
accordance with provisions in 40 CFR 63.10(c), (e)(1), and
(e)(2)(i)•
B. The Permittee shall install,operate, and maintain each CPMS in
continuous operation according to the procedures in the site-specific
monitoring plan.
C. The CPMS must collect data at least once every 15 minutes.
D. A CPMS for measuring temperature range,the temperature sensor
must have a minimum tolerance of 2.8 degrees Celsius (5 degrees
Fahrenheit) or 1 percent of the measurement range, whichever is
larger.
E. The Permittee shall conduct the CPMS equipment performance
evaluation, system accuracy audits, or other audit procedures
specified in the site-specific monitoring plan at least annually.
F. The Permittee shall conduct a performance evaluation of each CPMS
in accordance with the site-specific monitoring plan.

Permit No. 07645R06
Page 12
iii. Pursuant to 63.6625(a), if the Permittee elects to install a continuous
emissions monitor(CEMS) as specified in the table in Section d. Initial
Compliance Demonstrations above, the Permittee shall install, operate, and
maintain a CEMS to monitor CO and either oxygen or CO2 according to the
requirements below. If the Permittee is meeting a requirement to reduce CO
emissions,the CEMS must be installed at both the inlet and outlet of the
control device. If the Permittee is meeting a requirement to limit the
concentration of CO,the CEMS shall be installed at the outlet of the control
device.
A. Each CEMS must be installed, operated, and maintained according to
the applicable performance specifications of 40 CFR part 60,
appendix B.
B. The Permittee shall conduct an initial performance evaluation and an
annual relative accuracy test audit (RATA) of each CEMS according
to the requirements in 40 CFR 63.8 and according to the applicable
performance specifications of 40 CFR part 60, appendix B as well as
daily and periodic data quality checks in accordance with 40.CFR part
60, appendix F,procedure 1.
C. As specified in 40 CFR 63.8(c)(4)(ii), each CEMS must complete a
minimum of one cycle of operation(sampling, analyzing, and data
recording) for each successive 15-minute period. The Permittee shall
have at least two data points, with each representing a different 15-
minute period,to have a valid hour of data.
D. The CEMS data must be reduced as specified in 40 CFR 63.8(g)(2)
and recorded in parts per million or parts per billion(as appropriate
for the applicable limitation) at 15 percent oxygen or the equivalent
CO2 concentration.
g. Continuous Compliance Demonstration - Pursuant to 40 CFR 63.6640(a), and
Table 6 of 40 CFR 63 Subpart ZZZZ, continuous compliance for each existing, non-
emergency, non-black start, compression ignition reciprocating internal combustion
engine greater than 500 brake horsepower shall be demonstrated as follows:
Complying with the
The Permittee shall demonstrate continuous compliance by . . .
j requirement to . . .
i. Conducting performance tests every 8,760 hours or 3 years,
whichever comes first, for CO to demonstrate that the required CO
Reduce CO emissions, or limit ercent reduction is achieved or that the emissions remain at or
;the concentration of CO in the
below the CO concentration limit(') ; and
oCE exhaust, and using an ii. Collecting the catalyst inlet temperature data according to
xidation catalyst
§63.6625(b); and
iii. Reducing these data to 4-hour rolling averages; and

Permit No. 07645R06
Page 13
Complying with the The Permittee shall demonstrate continuous compliance by . . .
I requirement to . . .
iv. Maintaining the 4-hour rolling averages within the operating
imitations for the catalyst inlet temperature; and
. Measuringthe pressure drop across the catalyst once per month
p P Y
and demonstrating that the pressure drop across the catalyst is within
he operating limitation established during the performance test.
(1)If the reciprocating internal combustion engine is limited use (ie,
operates less than 100 hours per year), then demonstrate compliance
by conducting the same performance testing as item "i"above every
8,760 hours or S years, whichever comes first. A limited use engine
must also comply with items "ii"through "v"above.
L Collecting the monitoring data according to §63.6625(a), reducing
he measurements to 1-hour averages, calculating the percent
eduction or concentration of CO emissions according to §63.6620;
and
RReduce CO emissions or limit!ii.
I in
RICE exhaust, and using a g g period,Demonstrating that the catalyst achieves the required percent
concentration of CO in the', eduction of CO emissions over the 4-hour averaging or that
R
CEMS he emission remain at or below the CO concentration limit; and
'ii. Conducting an annual RATA of the CEMS using PS 3 and 4A of
0 CFR part 60, appendix B, as well as daily and periodic data
quality checks in accordance with 40 CFR part 60, appendix F,
procedure 1.
'. Conducting performance tests every 8,760 hours or 3 years,
whichever comes first, for CO to demonstrate that the required CO
! percent reduction is achieved or that the emissions remain at or
below the CO concentration limit(2) ; and
ii. Collecting the approved operating parameter(if any) data
according to §63.6625(b); and
Reduce CO emissions or limit
e concentration of CO in the ii. Reducing these data to 4-hour rolling averages; and
RICE exhaust, and not using iv. Maintaining the 4-hour rolling averages within the operating
an oxidation catalyst limitations for the operating parameters established during the
performance test.
(2) If the reciprocating internal combustion engine is limited use (ie,
operates less than 100 hours per year) then demonstrate compliance
by conducting the same performance testing as item "i"above every
8,760.hours or S•years, whichever comes first. A limited use engine
ust also comply with items a through ry above.

Permit No. 07645R06
Page 14
h. Recordkeeping Requirements - Pursuant to 40 CFR 63.6655,the Permittee shall
keep the following records(in written or electronic format). The records must be
maintained for five (5)years.
i. A copy of each notification and report submitted to comply with 40 CFR 63
Subpart ZZZZ.
I Occurrence and duration of each malfunction of operation(i.e., process
equipment) or the air pollution control and monitoring equipment.
iii. Performance tests and performance evaluations as required in 40 CFR
63.10(b)(2)(viii).
iv. All required maintenance performed on the air pollution control and
monitoring equipment.
V. Actions taken during periods of malfunction to minimize emissions in
accordance with 40 CFR 63.6605(b), including corrective actions to restore
malfunctioning process and air pollution control and monitoring.equipment to
its normal or usual manner of operation.
vi. Pursuant to 40 CFR 63.6655(d), all records required to show continuous
compliance with each emission or operating limitations listed in Section g.
above.
vii. Pursuant to 40 CFR 63.6655(b), for each CEMs or CPMs, the Permittee shall
maintain the following records:
A. Records described in 40 CFR 63.1 0(b)(2)(vi)through(xi).
B. Previous (i.e., superseded) versions of the site-specific monitoring
plan as required in 40 CFR 63.8(d)(3).
C. Requests for alternatives to the relative accuracy test for CEMS or
CPMS as required in 40 CFR 63.8(f)(6)(i), if applicable.
i. Reporting Requirements -
i. Pursuant to 40 CFR 63.6645(h), for each initial performance test required in
Section d. above,the Permittee is required to submit a Notification of
Compliance Status before the close of business on the 601h day following the
initial performance test according to 40 CFR 63.9(h)(2)(ii). For each
subsequent performance test conducted according to the requirements of
Section g above,the Permittee must submit the Notification of Compliance
Status, including the performance test results, before the close of business on
the 601h day following the completion of the performance test according to 40
CFR 63.10(d)(2).
ii. Pursuant to 40 CFR 63.6650,the Permittee shall submit a semi-annual report
by January 31 of each calendar year for the preceding six-month period

Permit No. 07645R06
Page 15
between July and December and by July 31 of each calendar year for the
preceding six-month period between January and June. If the RICE is
classified as "limited use" (operation limited to less than 100 hours per year)
and there is no deviation,then the report shall be submitted annually by
January 31 of each calendar year. The report shall contain the following:
A. Company name and address.
B. Statement by a responsible official, with that official's name, title, and
signature, certifying the accuracy of the content of the report.
C. Date of report and beginning and ending dates of the reporting period.
D. If a malfunction occurred during the reporting period,the compliance
report must include the number, duration, and a brief description for
each time of malfunction which occurred during the reporting period
and which caused or may have caused any applicable emission
limitation to be exceeded. The report must also include a description
of actions taken during a malfunction of an affected source to
minimize emissions in accordance with 63.6650(b), including actions
taken to correct a malfunction.
E. If there is no deviation(s),then provide a statement indicating that no
deviation(s) occurred during the reporting period.
F. If there is a deviation(s) during the reporting period,then provide
.information in 40 CFR 63.6650(d) as follows:
1. total operating time of the RICE at which the deviation
occurred during the reporting period.
11. the number, duration,and cause of deviation(including
unknown cause, if applicable), as applicable, and the
corrective action taken.
iii. If there are,no periods during which the Continuous Monitoring System
(CMS - including CEMS and CPMS) was out of control,then a statement
that there were no periods during which the CMS was out of control during
the reporting period.
iv. If there were periods during which the CMS (including CEMS and CPMS)
was out-of-control:
A. The date and time that each malfunction started and stopped.
B. The date, time, and duration that each CMS was inoperative, except
for zero (low-level) and high-level checks.
C. The date, time, and duration that each CMS was out-of-control,
including the information in §63.8(c)(8).

Permit No. 07645R06
Page 16
D. The date and time that each deviation started and stopped, and
whether each deviation occurred during a period of malfunction or
during another period.
E. A summary of the total duration of the deviation during the reporting
period, and the total duration as a percent of the total source operating
time during that reporting period.
F. A breakdown of the total duration of the deviations during the
reporting period into those that are due to control equipment
problems, process problems, other known causes, and other unknown
causes.
G. A summary of the total duration of CMS downtime during the
reporting period, and the total duration of CMS downtime as a percent
of the total operating time of the RICE at which the CMS downtime
occurred during that reporting period.
H. An identification of each parameter and pollutant(CO or
formaldehyde)that was monitored at the RICE.
I. A brief description of the RICE.
J. A brief description of the CMS.
K. The date of the latest CMS certification or audit.
L. A description of any changes in CMS,processes, or controls since the
last reporting period.
11. LIMITATION TO AVOID 15A NCAC 2D .1402 "APPLICABILITY" - In accordance with
15A NCAC 2Q .0317,to comply with this permit and avoid the applicability of 15A NCAC
2D .1402 "Applicability," as requested by the Permittee, emissions shall be limited as
follows:
Stationary internal combustion engines less than 2400 brake horsepower can operate
no more than the following hours between May 1 and September 30:
(A) for diesel engines:
t= 833,333/ES
(B) for natural gas-fired engines:
t= 700,280 /ES
where t equals time in hours and ES equals engine size in horsepower.
a. Operations Restrictions - To ensure emissions do not exceed the limitations above,
the following restrictions shall apply:

Permit No. 07645R06
Page 17
i. The generators(ID Nos. 1 through 8) shall be limited to 361 hours each
during the ozone season (May 1 through September 30).
b. Recordkeeping Requirements
i. The Permittee shall record monthly and total for each annual ozone season
the following:
A. The number of hours that each generator operated
c. Reporting Requirements—By October 30 of each year,regardless of the actual
emissions, the Permittee shall submit the following:
i. The hours that each generator operated during the ozone season(May 1
through September 30)
12. LIMITATION TO AVOID 15A NCAC 2Q .0501 -Pursuant to 15A NCAC 2Q
.0315 "Synthetic Minor Facilities," to avoid the applicability of 15A NCAC 2Q
.0501 "Purpose of Section and Requirement for a Permit," as requested by the
Permittee, facility-wide emissions shall be less than the following:
Pollutant Emission Limit
(Tons per consecutive 12-month period)
SO2 100
NOx 100
CO 100
a. Operations Restrictions - To ensure emissions do not exceed the limitations above,
the following restrictions shall apply:
i. The facility-wide engine-hours of operation shall be less than 3360 hours per
consecutive 12-month period when burning fuel that is 0.5 percent by weight
sulfur.
b. Recordkeeping Requirements
i. The Permittee shall record monthly and total annually the following:
A. The facility-wide engine-hours of operation.
B. The facility-wide S02,NOx, and CO emissions.
c. Reporting Requirements - Within 30 days after each calendar year, regardless of the
actual emissions, the Permittee shall submit the following:
i. emissions and/or operational data listed below. The data should include
monthly and 12 month totals for the previous 12 month period.

Permit No. 07645R06
Page 18
A. The facility-wide engine hours of operation.
B. The facility-wide SO2,NOx, and CO emissions.
13. LIMITATION TO AVOID 15A NCAC 2D .0530 "PREVENTION OF SIGNIFICANT
DETERIORATION' - In accordance with 15A NCAC 2Q .0317, to comply with this permit
and avoid the applicability of 15A NCAC 2D .0530 "Prevention of Significant
Deterioration," as requested by the Permittee, emissions shall be limited as follows:
Affected Source(s) Pollutants Emission Limit (Tons Per Consecutive 12-month Period)
Facility Wide 11NOx 250
Facility Wide CO 250
B. GENERAL CONDITIONS AND LIMITATIONS
1. TWO COPIES OF ALL DOCUMENTS REPORTS TEST DATA MONITORING DATA
NOTIFICATIONS, REQUESTS FOR RENEWAL, AND ANY OTHER INFORMATION
REQUIRED BY THIS PERMIT shall be submitted to the:
Regional Air Quality Supervisor
North Carolina Division of Air Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville,NC 28115
704-663-1699
For identification purposes, each submittal should include the facility name as listed on the
permit, the facility identification number, and the permit number.
2. RECORDS RETENTION REQUIREMENT- Any records required by the conditions of this
permit shall be kept on site and made available to DAQ personnel for inspection upon
request. These records shall be maintained in a form suitable and readily available for
expeditious inspection and review. These records must be kept on site for a minimum of 2
years, unless another time period is otherwise specified.
3. ANNUAL FEE PAYMENT - Pursuant to 15A NCAC 2Q .0203(a), the Permittee shall pay
the annual permit fee within 30 days of being billed by the DAQ. Failure to pay the fee in a
timely manner will cause the DAQ to initiate action to revoke the permit.
4. EQUIPMENT RELOCATION - A new air permit shall be obtained by the Permittee prior to
establishing,building, erecting, using, or operating the emission sources or air cleaning
equipment at a site or location not specified in this permit.
5. REPORTING REQUIREMENT - Any of the following that would result in previously
unpermitted, new, or increased emissions must be reported to the Regional Supervisor,
DAQ:

Permit No. 07645R06
Page 19
a. changes in the information submitted in the application regarding facility emissions;
b. changes that modify equipment or processes of existing permitted facilities; or
c. changes in the quantity or quality of materials processed.
If appropriate,modifications to the permit may then be made by the DAQ to reflect any
necessary changes in the permit conditions. In no case are any new or increased emissions
allowed that will cause a violation of the emission limitations specified herein.
6. This permit is subject to revocation or modification by the DAQ upon a determination that
information contained in the application or presented in the support thereof is incorrect,
conditions under which this permit was granted have changed, or violations of conditions
contained in this permit have occurred. The facility shall be properly operated and
maintained at all times in a manner that will effect an overall reduction in air pollution.
Unless otherwise specified by this permit, no emission source may be operated without the
concurrent operation of its associated air cleaning device(s) and appurtenances.
7. This permit is nontransferable by the Permittee. Future owners and operators must obtain a
new air permit from the DAQ.
8. This issuance of this permit in no way absolves the Permittee of liability for any potential
civil penalties which may be assessed for violations of State law which have occurred prior
to the effective date of this permit.
9. This permit does not relieve the Permittee of the responsibility of complying with all
applicable requirements of any Federal, State, or Local water quality or land quality control
authority.
10. Reports on the operation and maintenance of the facility shall be submitted by the Permittee
to the Regional Supervisor, DAQ at such intervals and in such form and detail as may be
required by the DAQ. Information required in such reports may include, but is not limited
to, process weight rates, firing rates, hours of operation, and preventive maintenance
schedules.
11. A violation of any term or condition of this permit shall subject the Permittee to enforcement
pursuant to G.S. 143-215.114A, 143-215.114B, and 143-215.114C, including assessment of
civil and/or criminal penalties.
12. Pursuant to North Carolina General Statute 143-215.3(a)(2), no person shall refuse entry or
access to any authorized representative of the DAQ who requests entry or access for
purposes of inspection, and who presents appropriate credentials, nor shall any person
obstruct,hamper, or interfere with any such representative while in the process of carrying
out his official duties. Refusal of entry or access may constitute grounds for permit
revocation and assessment of civil penalties.
13. The Permittee must comply with any applicable Federal, State, or Local requirements
governing the handling, disposal, or incineration of hazardous, solid, or medical wastes,

Permit No. 07645R06
Page 20
including the Resource Conservation and Recovery Act(RCRA) administered by the
Division of Waste Management.
14. PERMIT RETENTION REQUIREMENT-The Permittee shall retain a current copy of the
air permit at the site. The Permittee must make available to personnel of the DAQ,upon
request, the current copy of the air permit for the site.
15. CLEAN AIR ACT SECTION 112(r)REQUIREMENTS - Pursuant to 15A NCAC 2D .2100
"Risk Management Program," if the Permittee is required to develop and register a risk
management plan pursuant to Section 112(r) of the Federal Clean Air Act, then the
Permittee is required to register this plan with the USEPA in accordance with 40 CFR Part
68.
16. PREVENTION OF ACCIDENTAL RELEASES - GENERAL DUTY- Pursuant to Title I
Part A Section 112(r)(1) of the Clean Air Act "Hazardous Air Pollutants -Prevention of
Accidental Releases -Purpose and General Duty," although a risk management plan may not
be required, if the Permittee produces,processes, handles, or stores any amount of a listed
hazardous substance, the Permittee has a general duty to take such steps as are necessary to
prevent the accidental release of such substance and to minimize the consequences of any
release. This condition is federally-enforceable only.
17. GENERAL EMISSIONS TESTING AND REPORTING REQUIREMENTS -If emissions
testing is required by this permit, or the DAQ, or if the Permittee submits emissions testing
to the DAQ in support of a permit application or to demonstrate compliance,the Permittee
shall perform such testing in accordance with 15A NCAC 2D .2600 and follow all DAQ
procedures including protocol approval,regional notification, report submittal, and test
results approval.
Permit issued this the 14t'of March, 2013.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
AL
Ronald E. Slack
Regional Air Quality Supervisor
By Authority of the Environmental Management Commission
Air Permit No. 07645R06

ATTACHMENT to Permit No. 07645R06, March 14, 2013
Insignificant/Exempt Activities
Source Exemption Source of Source of Title V
Regulation TAPS? Pollutants?
`IES-1 -No. 2 fuel oil aboveground 112Q .0102
storage tank 10,000 gallons capacity)" c 1 D i No No.
IES-2 -No. 2 fuel oil aboveground 2Q .0102
storage tank(10,000 gallons capacity) (c)(1)(D)(i) j No No
.. ._..... ..........__.__..__............................................. -
IES-3 -No. 2 fuel oil aboveground day 12Q .0102
'tankcapacity) No No
:(1,000 gallons
:..... w:_:: . ....._ .....................................................................................; ....................................................... .............................................................................
IES-4 -No. 2 fuel oil aboveground day 112Q .0102 �
tank(1,000 gallons capacity) c 1 D i
No No
g P ._..Y).... O )( ) )
IES-5 -No. 2 fuel oil aboveground day 2Q .0102 No No
tank(1,000 gallons capacity) c 1 D z
IES-6 -motor oil aboveground tank(500 112Q .0102� ''
No No
IES-7 -waste motor oil aboveground 2Q .0102 No No
tank(500 gallons capacity) (c)(1)(D)(i)
1. Because an activity is exempted from being required to have a permit or permit modification
does not mean that the activity is exempted from an applicable requirement or that the owner
or operator of the source is exempted from demonstrating compliance with any applicable
requirement.
2. When applicable, emissions from stationary source activities identified above shall be
included in determining compliance with the permit requirements for toxic air pollutants
under 15A NCAC 2D .1100 "Control of Toxic Air Pollutants" or 2Q .0711 "Emission Rates
Requiring a Permit."