May 1 6 , 2011

James M. Parker , PE PPL Montana, LLC

JE Corette Steam Electric Station

301 Charlene Street Billings, Montana 5910 7

RE : Draft Title V Operating Permit #OP 2953

- 0 6

Dear Mr. Parker :

The Department of Environmental Quality has prepare d the enclosed Draft Operating Permit #OP 2953

- 0 6

, for PPL Montana, LLC, JE Corette Steam Electric Station , located in Section 2, Township 1 South, Range 26 East, Yellowstone County , Montana . Please review the cover page of the attached permit for

informat ion pertaining to the action taking place on Permit #OP 2953

- 0 6

.

If you have any questions, please contact Deanne Fischer , the permit writer, at (406) 444

- 3403 or by

email at dfischer @mt.gov.

Sincerely,

Vickie Walsh Air Permitting Program Supervisor

A ir Resources Management Bureau (406) 444

- 9741 Deanne Fischer , PE Environmental Engineer Air Resources Management Bureau (406) 444

- 3403

VW: DF

Enclosure

c c: Christopher Ajayi, US EPA Region VIII 8P

- AR

Carson Coate , US EPA Region VIII , Montana Office Stephen J. Christian, PPLM Montana, LLC, Alternative Responsible Official

Tom Olson

, PPLM Montana, LLC, Facility Contact PersonOP2953

- 0 6 i Draft : 05/16/2011

State of Montana Department of Environmental Quality Helena, Montana 59620

AIR QUALITY OPERATING PERMIT NUMBER OP2953

- 0 6

Renewal Application Received: April 16, 2010 Application Deemed Administratively Complete: May 17, 2010 Application Deemed Technically Complete: June 15, 2010

AFS Number: 030

- 111

- 0015A

Draft Issue Date : May 1 6 , 2011 Proposed Issue Date:

End of EPA 45

- day Review:

Date of Decision:

Effective Date: Expiration Date:

In accordance with the Montana Code Annotated (MCA) Sections 75

- 2

- 217 and 218, and the Administrative Rules of Montana (ARM) Title 17, Chapter 8, Subchapter 12, O perating Permit Program,
ARM 17.8.1201, et seq

.,

PPL Montana, LLC

– JE Corette Steam Electric Station Section 2, Township 1 South, Range 26 East, Yellowstone County, Montana

301 Charlene Street Billings, MT 5910 7

hereinafter referred to as “PPL M ” , is au thorized to operate a stationary source of air contaminants consisting of the emission s units described in this permit. Until this permit expires

, is modified

, or revoked, PPLM is allowed to discharge air pollutants in accordance with the conditions of th is permit. All conditions in this permit are federally and state enforceable unless otherwise specified. Requirements

that are only state enforceable are identified in the permit. A copy of this permit must be kept on site at

the above

- named facility.

Permit Issuance and Appeal Processes: In accordance with ARM 17.8.1232, the Department of Environmental Quality (Department) is providing a 30

- day public comment period from May 16, 2011 to June 15, 2011 , to accept comments on this draft permit. Any memb er of the public, including representatives of the facility, desiring to comment on this draft permit must submit all comments to the Department by June 15, 2011 , to be considered. Comments may address the Department analysis and

determination or informat ion submitted by the applicant. A public hearing regarding issuance of this permit may be requested by submitting a written request to the Department within the public comment period. The Department intends to issue the proposed operating permit after th e comment period has expired and after any required public hearing. The proposed permit will be sent to the United States Environmental Protection Agency (EPA). The EPA is allowed a 45

- day comment period on the proposed permit. After the EPA comment per iod has expired, the Department intends to issue a decision on the permit. In accordance with Section 75

- 2

- 218, MCA, the Department’s decision regarding issuance of the permit is not effective until 30 days have elapsed from the date of the decision. The decision may be appealed to the Board of Environmental Review (Board) by filing a request for a hearing within 30 days after the date of decision. For more information please contact the Department at (406) 444

- 3490.OP2953

- 0 6 ii Draft : 05/16/2011 Montana Air Quality Operating Permit Department of Environmental Quality

SECTION I. GENERAL INFORMATION

................................ ................................ .......................... 1

SECTION II. SUMMARY OF EMISSION S UNITS

................................ ................................ ............ 2

SECTION III. PERMIT CONDITIONS

................................ ................................ ................................ . 3

A. F ACILITY

- W IDE

................................ ................................ ................................ ................................ . 3

B. EU1

– P ROTOCOL A SH H ANDLING S YSTEM

................................ ................................ ...................... 6

C. EU2

– A UXILIARY B OILER

................................ ................................ ................................ ................ 8

D. EU3

– C OAL H ANDLING S YSTEM

................................ ................................ ................................ ...... 9

E. EU4

– C OAL S TORA GE P ILES

– A CTIVE AND R ESERVE (W IND E ROSION )

................................ ...... 11

F. EU5

– G ASOLINE S TORAGE T ANK

................................ ................................ ................................ ... 12

G. EU6

– I NTERNAL C OMBUSTION E NGINES (V EHICLES )

................................ ................................ .... 13

H. EU7

– J.E. C ORETTE B OILER

................................ ................................ ................................ ........... 14

I. EU8

– P LANT R OADS

................................ ................................ ................................ ....................... 20

J. EU9

– E MERGENCY D IESEL G ENERATORS

................................ ................................ ...................... 21

K. EU10

– D IESEL T ANK

................................ ................................ ................................ ...................... 23

L. EU11

– M ERCURY O XIDIZER /S ORBENT H ANDLING S YST EM

................................ .......................... 23

SECTION IV. NON

- APPLICABLE REQUIREME NTS

................................ ................................ .... 26

A. F ACILITY

- W IDE

................................ ................................ ................................ ............................... 26

B. E MISSION S U NITS

................................ ................................ ................................ ............................ 28

SECTION V GENERAL PERMIT CONDI TIONS

................................ ................................ ........... 32

A. C OMPLIANCE R EQUIREMENTS

................................ ................................ ................................ ......... 32

B. C ERTIFICATION R EQUIREMENTS

................................ ................................ ................................ ..... 32

C. P ERMIT S HIELD

................................ ................................ ................................ ................................ 33

D. M ONITORING

, R ECORDKEEPING

, AND R EPORTING R EQUIREMENTS

................................ ............... 34

E. P ROMPT D EVIATION R EPORTING

................................ ................................ ................................ ..... 35

F. E MERGENCY P ROVISIONS

................................ ................................ ................................ ................ 35

G. I NSPECTION AND E NTRY

................................ ................................ ................................ .................. 36

H. F EE P AYMENT

................................ ................................ ................................ ................................ .. 36

I. M INOR P ERMIT M ODIFICATIONS

................................ ................................ ................................ ..... 37

J. C HANGES N OT R EQUIRING P ERMIT R EVISION

................................ ................................ ................ 37

K. S IGNIFICANT P ERMIT M ODIFICATIONS

................................ ................................ ............................ 38

L. R EOPENING F OR C AUSE

................................ ................................ ................................ .................. 38

M. P ERMIT E XPIRATION AND R ENEWAL

................................ ................................ ............................... 39

N. S EVERABILITY C LAUSE

................................ ................................ ................................ ................... 39

O. T RANSFER OR A SSIGNMENT OF O WNERSHIP

................................ ................................ ................... 39

P. E MISSIONS T RADING

, M ARKETABLE P ERMITS

, E CONOMIC I NCE NTIVES

................................ ........ 40 Q. N O P ROPERTY R IGHTS C ONVEYED

................................ ................................ ................................ .. 40

R. T ESTING R EQUIREMENTS

................................ ................................ ................................ ................ 40

S. S OURCE T ESTING P ROTOCOL

................................ ................................ ................................ .......... 40

T. M ALFUNCTIONS

................................ ................................ ................................ ............................... 40

U. C IRCUMVENTION

................................ ................................ ................................ ............................. 40

V. M OTOR V EHICLES

................................ ................................ ................................ ........................... 40

W. A NNUAL E MISSIONS I NVENTORY

................................ ................................ ................................ .... 40

X. O PEN B URNING

................................ ................................ ................................ ................................ 40

Y. M ONTANA A IR Q UALITY P ERMIT S (MAQP)

................................ ................................ ................... 41

Z. N ATIONAL E MISSION S TANDARD FOR A SBESTOS

................................ ................................ ........... 41

AA. A SBESTOS

................................ ................................ ................................ ................................ ........ 41OP2953

- 0 6 iii Draft : 05/16/2011

BB. S TRATOSPHERIC O ZONE P ROTECTION

– S ERVICING OF M OTOR V EHICLE A IR C ONDITION ERS

..... 42

CC. S TRATOSPHERIC O ZONE P ROTECTION

– R ECYCLING AND E MISSIONS R EDUCTIONS

...................... 42

DD. E MERGENCY E PISODE P LAN

................................ ................................ ................................ ............ 42

EE. D EFINITIONS

................................ ................................ ................................ ................................ .... 42

APPENDIX A INSIGNIFI CANT EMISSION S UNITS

................................ ................................ ..... A

- 1

APPENDIX B DEFINITIONS AND ABBR EVIATIONS

................................ ................................ .. B

- 1

APPENDIX C NOTIFICATION ADDRESS ES

................................ ................................ .................. C

- 1

APPENDIX D AIR QUALITY INSPECTO R INFORMATION

................................ ....................... D

- 1

APPENDIX E OPACITY CEMS

................................ ................................ ................................ ......... E

- 1

APPENDIX F SO 2 CEMS

................................ ................................ ................................ ..................... F

- 1

APPENDIX G NOX CEMS

................................ ................................ ................................ ................... G

- 1

APPENDIX H ACID RAIN

................................ ................................ ................................ ................... H

- 1

APPENDIX I SO 2 SIP

................................ ................................ ................................ ............................ I

- 1

APPENDIX J OPERATION MODIFICATI ON PLAN

- REVISION 4

................................ ............. J

- 1

APPENDIX K COMPLIANCE ASSURANCE MONITORING (CAM) PLA N

.............................. K

- 1

APPENDIX L MERCURY EMISSIONS MO NITORING SYSTE M (MEMS)

.............................. L

- 1OP2953

- 0 6 1 Draft : 05/16/2011

Terms not otherwise defined in this permit or in the Definitions and Abbreviations Appendix of this permit have the meaning assigned to them in the referenced regulations.

SECTION I. GENERAL INFORMATION

The following general information is provided pursuant to ARM 17.8.1210(1).

Company Name : PPL Montana, LLC (PPL M )

Mailing Address : P.O. Box 38

City : Colstrip State : MT Zip : 59323

Plant Name: JE Corette Steam Electric Station

Plant Location : Section 2, T ownship 1S outh , R ange 26E ast , Yellowstone County, M ontana

301 Charlene Street, Billings, M ontana

Plant Mailing Address : P.O. Box 30495, Billings, MT 59107

Responsible Official : James M. Parker Phone : (406) 237

- 6900 Alternative Respo nsible Official : Stephen J. Christian Phone : (406) 748

- 5019

Facility Contact Person : Tom Olson Phone: (406) 896

- 4704

Facility Technical Contact: Stephen J. Christian Phone : (406) 748

- 5019

Primary SIC Code : 4911, Electric Services (NAICS Code: 221112)

Nature of Business : Coal

- fired thermal power generation

Description of Process : A tangential coal

- fired boiler and associated equipment for generation of electricity.OP2953

- 0 6 2 Draft : 05/16/2011 SECTION II. SUMMARY OF EMISSION S UNITS

The emission s units regulated by this permit are the following (ARM 17.8.1211):

Emissions

Unit ID Description Pollution Control Device/Practice

EU1 Ash Handling System Dust collection equipment: dustless ash loading system , or contained railcars and

trucks

EU2 Auxiliary Boiler None

EU3 Coal Handling System Water on Conveyor No. 3; covered conveyors, telescopic chute; or dust collectors

EU4 Coal Storage Piles None

EU5 Gasoline Storage Tank None

EU6 Internal Combustion Engines None

EU7 J.E. Corette Boiler Electrostatic Precipitat or
EU8 Plant Roads Washed and cleaned

EU9 Process Ponds Wet material

EU10 Diesel Tank None

EU11 Mercury Oxidizer/Sorbent Handling System Bin Vent FilterOP2953

- 0 6 3 Draft : 05/16/2011 SECTION III. PERMIT CONDITIONS

The following requirements and conditions are applicable to the facility or to specific emission s units located at the facility (ARM 17.8.1211, 1212, and 1213).

A. Facility

- Wide

Conditions Rule Citation Rule Description Pollutant/Parameter Limit

A.1 ARM 17.8.105 Testing Requirements Testing Requirements

------

A.2 A RM 17.8.304(1) Visible Air Contaminants Opacity 40%

A.3 ARM 17.8.304(2) Visible Air Contaminants Opacity 20%

A.4 ARM 17.8.308(1) Particulate Matter, Airborne Fugitive Opacity 20%

A.5 ARM 17.8.308(2) Particulate Matter, Airborne Reasonable Precautions

-- -----

A.6 ARM 17.8.308 Particulate Matter, Airborne Reasonable Precaution,

Construction 20%

A.7 ARM 17.8.309 Particulate Matter, Fuel Burning Equipment Particulate Matter E= 0.882 * H

- 0.1664 Or

E= 1.026 * H

- 0.233

A.8 ARM 17.8.310 Particulate Matter, I ndustrial

Processes Particulate Matter E= 4.10 * P 0.67 or E= 55 * P 0.11

- 40

A.9 ARM 17.8.322(4) Sulfur Oxide Emissions,

Sulfur in Fuel Sulfur in Fuel (liquid or solid fuels) 1 lb/MMBtu fired

A.10 ARM 17.8.322(5) Sulfur Oxide Emissions,

Sulfur in Fuel S ulfur in Fuel (gaseous) 50 gr/100 CF

A.11 ARM 17.8.324(3) Hydrocarbon Emissions,

Petroleum Products Gasoline Storage Tanks

-------

A.12 ARM 17.8.324 Hydrocarbon Emissions,

Petroleum Products 65,000 Gallon Capacity

-------

A.13 ARM 17.8.324 Hydrocarbon E missions,

Petroleum Products Oil

- effluent Water Separator

-------

A.14 ARM 17.8.342 NESHAPs General Provisions SSM Plan Submittal

A.15 ARM 17.8.1211(1)(c)

and 40 CFR Part 98 Greenhouse Gas Reporting Reporting

-------

A.1 6 SIP SIP Sulfur Bearing Gases

A.1 7 ARM 17.8.1212 Reporting Requirements Prompt Deviation Reporting

-------

A.1 8 ARM 17.8.1212 Reporting Requirements Compliance Monitoring

-------

A.1 9 ARM 17.8.1207 Reporting Requirements Annual Certification

-------

Conditions

A.1. Pursuant to ARM 17.8 .105, any person or persons responsible for the emission of any air contaminant into the outdoor atmosphere shall, upon written request of the Department, provide the facilities and necessary equipment (including instruments and sensing devices) and shall

conduct test s , emission or ambient, for such periods of time as may be necessary using methods approved by the Department.

Compliance demonstration frequencies that list “as required by the Department” refer to ARM
17.8.105. In addition, for such sources , compliance with limits and conditions listing “as required by the Department” as the frequency, is verified annually using emission factors and engineeringOP2953

- 0 6 4 Draft : 05/16/2011

calculations by the Department’s compliance inspectors during the annual emission inventory

review ; in the case of Method 9 tests, compliance is monitored during the regular inspection by the compliance inspector.

A.2. Pursuant to ARM 17.8.304(1), PPLM shall not cause or authorize emissions to be discharged into the outdoor atmosphere from any source insta lled on or before November 23, 1968, that exhibit an opacity of 40% or greater averaged over 6 consecutive minutes unless otherwise specified by rule or in this permit.

A.3. Pursuant to ARM 17.8.304(2), PPLM shall not cause or authorize emissions to be dischar ged into the outdoor atmosphere from any source installed after November 23, 1968, that exhibit an opacity of 20% or greater averaged over 6 consecutive minutes unless otherwise specified by rule or in this permit.

A.4. Pursuant to ARM 17.8.308(1), PPLM shall not cause or authorize the production, handling, transportation, or storage of any material unless reasonable precautions to control emissions of particulate matter are taken. Such emissions of airborne particulate matter from any stationary

source shall not exhibit an opacity of 20% or greater averaged over 6 consecutive minutes unless otherwise specified by rule or in this permit.

A.5. Pursuant to ARM 17.8.308(2), PPLM shall not cause or authorize the use of any street, road or parking lot without taking rea sonable precautions to control emissions of airborne particulate matter unless otherwise specified by rule or in this permit.

A.6. Pursuant to ARM 17.8.308, PPLM shall not operate a construction site or demolition project unless reasonable precautions are take n to control emissions of airborne particulate matter. Such emissions of airborne particulate matter from any stationary source shall not exhibit an opacity of 20% or greater averaged over 6 consecutive minutes unless otherwise specified by rule or in thi s permit.

A.7. Pursuant to ARM 17.8.309, unless otherwise specified by rule or in this permit, PPLM shall not cause or authorize particulate matter caused by the combustion of fuel to be discharged from any stack or chimney into the outdoor atmosphere in exces s of the maximum allowable emissions of particulate matter for existing fuel burning equipment and new fuel burning equipment calculated using the following equations:

For existing fuel burning equipment (installed before November 23, 1968):

E =0.882 * H
- 0.1664

For new fuel burning equipment (installed on or after November 23, 1968):

E =1.026 * H
- 0.233

Where H is the heat input capacity in million B ritish T hermal U nits (MMBtu) per hour and E is the maximum allowable particulate emissions rate in pounds per MMBtu.

A.8. Pursuant to ARM 17.8.310, unless otherwise specified by rule or in this permit, PPLM shall not cause or authorize particulate matter to be discharged from any operation, process, or activity into the outdoor atmosphere in excess of the maximum hourly allowable emissions of particulate matter calculated using the following equations:

For process weight rates up to 30 tons per hour: E = 4.10*P 0.67
For process weight rates in excess of 30 tons per hour: E = 55.0*P 0.11

– 40

Where E = rate of e missions in pounds per hour and P = process weight rate in tons per hour.OP2953

- 0 6 5 Draft : 05/16/2011

A.9. Pursuant to ARM 17.8.322(4), PPLM shall not burn liquid or solid fuels containing sulfur in excess of one (1) pound per MM B tu fired, unless otherwise specified by rule or in this pe rmit. This rule shall be interpreted to allow for a daily deviation of 0.1 pound of sulfur per million BTU fired. The rule shall be interpreted to allow the blending of all fuels burned in a plant during a given time period in determining the aggregate s ulfur content for purposes of the rule, and it shall not be construed to require blending or physical mixing of fuels at any given furnace or heater within the plant complex. (April, 1978 Billings/Laurel Plan that included the Board of Health

and Environm ental Sciences Order).

A.10. Pursuant to ARM 17.8.322(5), PPLM shall not burn any gaseous fuel containing sulfur compounds in excess of 50 grains per 100 cubic feet of gaseous fuel, calculated as hydrogen sulfide at standard conditions, unless otherwise specifi ed by rule or in this permit.

A.11. Pursuant to ARM 17.8.324(3), PPLM shall not load or permit the loading of gasoline into any stationary tank with a capacity of 250 gallons or more from any tank truck or trailer, except through a permanent submerged fill pipe , unless such tank is equipped with a vapor loss control device or is a pressure tank as described in ARM 17.8.324(1), unless otherwise specified by rule or in this permit.

A.12. Pursuant to ARM 17.8.324, unless otherwise specified by rule or in this permit, PP LM shall not place, store or hold in any stationary tank, reservoir or other container of more than 65,000 gallon capacity any crude oil, gasoline or petroleum distillate having a vapor pressure of 2.5 pounds per square inch absolute or greater under actua l storage conditions, unless such tank, reservoir or other container is a pressure tank maintaining working pressure sufficient at all times to prevent hydrocarbon vapor or gas loss to the atmosphere, or is designed and equipped with a vapor loss

control d evice, properly installed, in good working order and in operation.

A.13. Pursuant to ARM 17.8.324, unless otherwise specified by rule or in this permit, PPLM shall not use any compartment of any single or multiple

- compartment oil

- effluent water separator, whi ch compartment receives effluent water containing 200 gallons a day or more of any petroleum product from any equipment processing, refining, treating, storing or handling kerosene or other petroleum product of equal or greater volatility than kerosene, un less such compartment is equipped with a vapor loss control device, constructed so as to prevent emission of hydrocarbon vapors to the atmosphere, properly installed in good working order and in operation.

A.14. Pursuant to ARM 17.8.342 and 40 CFR 63.6, PPLM sh all submit to the Department a copy of any startup, shutdown, and malfunction (SSM) plan required under 40 CFR 63.6(e)(3) within 30 days of the effective date of this operating permit (if not previously submitted), within 30 days of the compliance date of any new National Emission Standard for Hazardous Air Pollutants ( NESHAPs) or Maximum Achievable Control Technology (MACT) standard, and within 30 days of the revision of any such SSM plan, when applicable. The Department requests submittal of such plans i n electronic form, when possible.

A.15. Pursuant to ARM 17.8.1211(1)(c) and 40 CFR Part 98, PPLM shall comply with requirements of

40 CFR Part 98

– Mandatory Greenhouse Gas Reporting, as applicable (ARM 17.8.1211(1)(c), NOT an applicable requirement under Titl e V).

A.16. PPLM shall utilize appropriate maintenance, repair, and operating practices to control emissions of sulfur bearing gases from minor sources such as ducts, stacks, valves, vents, vessels, and flanges that are not otherwise covered in the SO 2 SIP App endix. This condition became effective March 4, 1998. (Board of Environmental Review Order signed August 19, 1996). This requirement is "State Only" until approval of the SIP by the U.S. Environmental Protection AgencyOP2953

- 0 6 6 Draft : 05/16/2011

A.17. PPLM shall promptly report deviati ons from permit requirements including those attributable to upset conditions, as upset is defined in the permit. To be considered prompt, deviations shall be reported to the Department using the schedule and content as described in Section V.E (unless

ot herwise specified in an applicable requirement) (ARM 17.8.1212).

A.18. On or before February 15 and August 15 of each year, PPLM shall submit to the Department the compliance monitoring reports required by Section V.D. These reports must contain all

informatio n required by Section V.D, as well as the information required by each individual emissions unit. For the reports due by February 15 of each year, PPLM may submit a single report, provided that it contains all the information required by Section V.B & V.D . Per ARM 17.8.1207,

any application form, report or compliance certification submitted pursuant to ARM Title 17, Chapter 8, Subchapter 12 (including semiannual monitoring reports), shall contain certification by a responsible official of
truth, accurac y and completeness. This certification and any other certification required under ARM Title 17, Chapter 8, Subchapter 12, shall

state that

, “based on information and belief formed after reasonable inquiry, the statements and information in the document ar e true, accurate and complete.”

A.19. By February 15 of each year, PPLM shall submit to the Department the compliance certification required by Section V.B. The annual certification required by Section V.B must include a statement of compliance based on the in formation available which identifies any observed, documented or otherwise known instance of noncompliance for each applicable requirement. Per

ARM 17.8.1207,

any application form, report, or compliance certification submitted pursuant to ARM Title 17, Chapter 8, Subchapter 12 (including annual certifications), shall contain certification by a responsible official of truth, accuracy and completeness. This certification and any other certification required under ARM Title 17, Chapter 8, Subchapter 12, sh all state that, “based on information and belief formed after reasonable inquiry, the statements and information in the document are true, accurate and complete.”

B. EU1

– Protocol Ash Handling System

Condition(s) Pollutant/

Parameter Permit Limit Complian ce Demonstration Reporting Requirements Method Frequency

B.1., B.4.,
B.8., B.11.,
B.12., B.13 Opacity 20% Visual Survey/

Method 9 Bi

- monthly Semiannual

B.2., B.5.,
B.6., B.9., B.12., B.13 Opacity Reasonable

Precautions Use of enclosed

trucks or use of

dustless ash loading system When ash is

being unloaded Semiannual

B.3., B.7.,
B.10., B.12.,

B.13 Opacity 40% Operation of Bag Filters When ash

handling system is operating SemiannualOP2953

- 0 6 7 Draft : 05/16/2011

Conditions

B.1. PPLM may not cause or authorize emissions to be dis charged into the outdoor atmosphere from any source that exhibits an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

B.2. PPLM shall not cause or authorize the production, handling, transportation, or storage of any

material u nless reasonable precautions to control emissions of airborne particulate matter are taken (ARM 17.8.308).

B.3. PPLM shall not cause or authorize emissions to be discharged into the outdoor atmosphere from any baghouse, bag filter, or bin vent associated with the ash handling system that exhibit opacity of 40% or greater averaged over 6 consecutive minutes (ARM 17.8.304).

C ompliance Demonstration

B.4. PPLM shall conduct either a semiannual Method 9 source test or a weekly visual survey of visible

emissions on the Ash Handling System. Under the visual survey option, once per calendar week, during daylight hours, PPLM shall visually survey the Ash Handling System for any visible

emissions. If visible emissions are observed during the visual survey, PPLM must conduc t a Method 9 source test. The Method 9 source test must begin within one hour of any observation of

visible emissions. If visible emissions meet or exceed 15% opacity based on the Method 9 source

test, PPLM shall immediately take corrective action to cont ain or minimize the source of emissions. If corrective actions are taken, then PPLM shall immediately conduct a subsequent visual survey (and subsequent Method 9 source test if visible emissions remain) to monitor compliance. The person conducting the vi sual survey shall record the results of the survey (including the results of any Method 9 source test performed) in a log, including any corrective action taken. Conducting a visual survey does not relieve PPLM of the liability for a violation

determined using Method 9 (ARM 17.8.101(27)).

If the visual surveys are not performed once per calendar week as specified above during the reporting period, then PPLM shall perform the Method 9 source tests on the Ash Handling System for that reporting period.

Method 9 source tests must be performed in accordance with the Montana Source Test Protocol and Procedures Manual, except that prior notification of the test is not required. Each observation period must be a minimum of 6 minutes unless any one reading is 20% or greater, then the observation period must be a minimum of 20 minutes or until a violation of the standard has been documented, whichever is a shorter period of time (ARM 17.8.1213).

B.5. When loading ash into an enclosed truck or enclosed railcar, PPL M shall use an appropriate method of conveying (e.g., pneumatic transfer, dustless slide, etc.) the ash to control fugitive dust (ARM 17.8.1213).

B.6. When loading ash to an open truck or open railcar, PPLM shall apply water to the ash prior to

load

- out. A lo ad

- out chute with an intact skirt shall be used for loading all open railcars and open trucks (ARM 17.8.1213).

B.7. A fabric filter control shall be used to contain dust from the loading and unloading of each of the following tanks: 2,000

- ton tank, 1,500

- ton t ank, and 300

- ton tank (ARM 17.8.1213).OP2953

- 0 6 8 Draft : 05/16/2011

Recordkeeping

B.8. All compliance source test recordkeeping shall be performed in accordance with the test method used, and the Montana Source Test Protocol and Procedures Manual and shall be maintained on

site . If M ethod 9 tests are conducted, the test reports must be maintained on site and must be submitted to the Department upon request. If visual surveys are performed, PPLM shall maintain a log to verify the visual surveys were performed, as specified in Section III.B.4

. Each log entry must include the date, time, results of survey (and results of subsequent Method 9 tests, if applicable) , and observer’s initial. Whether visual surveys or Method 9 tests are conducted, if any corrective action is required, the ti me, date, observer’s initials, and any preventative or corrective action taken must be recorded in the log (ARM 17.8.106 and ARM 17.8.1212 ).

B.9. PPLM shall maintain on site a log of the date and time when enclosed trucks, water, and load

- out
chute skirt w ere not used while the emissions unit was operating. The log must include the reason the method of controlling was not operated and the type of truck or railcar loaded (ARM

17.8.1212 ).

B.10. PPLM shall maintain on site a log of the date and time when bag filters were not operated while the emissions unit was operating. The log must include the reason the bag filters were not in operation (ARM 17.8.1212).

Reporting

B.11. Any compliance source test reports must be submitted in accordance with the Montana Source

Test P rotocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

B.12. The annual compliance certification required by Section V.B must contai n a certification statement for the above applicable requirements (ARM 17.8.1212).

B.13. The semiannual monitoring report s hall provide (ARM 17.8.1212):

a. a summary of any visual surveys and corrective actions taken , and the results of any Method 9 tests that were performed and logged during that semiannual period as specified by Section III.B.4 and III.B.8

b. a s ummary of the log of when and why water and/or the load

- out chute skirt were not
used while emissions units were operating during that semiannual period as specified by

Section III. B

. 6 and III. B

. 9

.

c. a s ummary of the log of when and why the bag filters were not operated whil e emissions units were operating during that semiannual period as specified by Section III. B

. 7 and

III. B .10.

C. EU2

– Auxiliary Boiler

Condition(s) Pollutant/

Parameter Permit Limit Compliance Demonstration Method Frequency Reporting Requirements

C.1., C.4.,
C.5., C.6.,

C.7 Opacity 20% Pipeline Quality

Natural Gas Ongoing Semiannual

C.2., C .4.,
C.5., C.6.,

C.7 PM 0.459 lb/mmBtu Pipeline Quality

Natural Gas Ongoing Semiannual

C.3., C.4., C.5., C.6.,

C.7 Sulfur in

fuel 50 grains of sulfur/100

cubic feet of gaseous fuel Pipeline Quality

Natural Gas Ongoing SemiannualOP2953

- 0 6 9 Draft : 05/16/2011

Conditions

C.1. PPLM may not cause or authorize to be discharged into the atmosphere from the boiler, when in operation, visible emissions that exhibit an opacity of 20% or greater, unless specified elsewhere in this permit (ARM 17.8.304 and ARM 17.8.752).

C.2. When the boiler is in operation, particulate matter emissions from the boiler shall not exceed 0.459 lb/MMBtu (ARM 17.8.752).

C.3. PPLM shall not fire in the boiler liquid or solid fuels con taining sulfur in excess of 50 grains of sulfur/100 cubic feet of gaseous fuel (ARM 17.8.322).

Compliance Demonstration

C.4. PPLM shall burn pipeline quality natural gas in the auxiliary boiler while in operation to monitor compliance with the limits in Secti on III.C.1, III.C.2, and III.C.3 (ARM 17.8.1213).

Recordkeeping

C.5. PPLM shall maintain on site copies of the supplier’s fuel analysis for each fuel delivery. The analysis may be based on an average fuel produced over a period of time (ARM 17.8.1212).

Repo rting

C.6. The annual compliance certification required by Section V.B must contain a certification

statement for the above applicable requirements (ARM 17.8.1212).

C.7. The semiannual monitoring report shall provide certification that pipeline quality natural gas was used in the boiler (ARM 17.8.1212).

D. EU3

– Coal Handling System

Condition Pollutant/

Parameter Permit

Limit Compliance Demonstration

Method Frequency Reporting Frequency

D.1., D.5., D.9.,
D.11., D.12 ., D.13 Opacity 20% Visual Survey/Method 9 Bi

- monthly Semiannual

D.2., D.6., D.10.,
D.11., C.12 ., D13 Opacity Reasonable

Precautions Use of telescopic

spout Ongoing Semiannual

D.3., D.7., D.10.,
D.11., D.12 ., D.13 Opacity 40% Operation of bag

filters Ongoing Semiannual

D.4., D.8., D.9.,
D.11., D .12 ., D.13 PM E=55 * p 0.11

- 40 Method 5 As required by the Department and

Section III.A.1 Annual

Conditions

D.1. PPLM may shall not cause or authorize emissions from the Coal Handling Systems and Coal Piles to be discharged into the outdoor atmosphere that exhibit an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

D.2. PPLM shall not cause or authorize the production, handling transportation, or storage of any material unless reasonable precautions to control emissions of particu late matter are taken. Such emissions of airborne particulate from any stationary source shall not exhibit an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.308(1)).OP2953

- 0 6 10 Draft : 05/16/2011

D.3. PPLM shall not cause or authorize emissions to be discharged in to the outdoor atmosphere from any baghouse, bag filter, or bin vent associated with coal handling system that exhibit opacity of 40% or of greater (ARM 17.8.304).

D.4. The particulate emissions from process weight shall not exceed the value calculated using E = 55.0 * P 0.11

– 40, where E = emissions in pounds per hour and P = process weight rate in tons per hour (ARM 17.8.310).

Compliance Demonstration

D.5. PPLM shall conduct either a semiannual Method 9 source test or a weekly visual survey of visible

emissions on the c oal h andling s ystem. Under the visual survey option, once per calendar week, during daylight hours, PPLM shall visually survey the c oal handling system for any visible

emissions. If visible emissions are observed during the visual survey, PPLM mu st conduct a Method 9 source test. The Method 9 source test must begin within one hour of any observation of

visible emissions. If visible emissions meet or exceed 15% opacity based on the Method 9 source test, PPLM shall immediately take corrective actio n to contain or minimize the source of emissions. If corrective actions are taken, then PPLM shall immediately conduct a subsequent visual survey (and subsequent Method 9 source test if visible emissions remain) to monitor compliance. The person conducti ng the visual survey shall record the results of the survey (including the results of any Method 9 source test performed) in a log, including any corrective action taken. Conducting a visual survey does not relieve PPLM of the liability for a violation

de termined using Method 9 (ARM 17.8.101(27)).

If the visual surveys are not performed once per calendar week as specified above during the reporting period, then PPLM shall perform the Method 9 source tests on the c oal h andling s ystem for that reporting p eriod.

Method 9 source tests must be performed in accordance with the Montana Source Test Protocol and Procedures Manual, except that prior notification of the test is not required. Each observation period must be a minimum of 6 minutes unless any one reading is 20% or greater, then the observation period must be a minimum of 20 minutes or until a violation of the standard has been documented, whichever is a shorter period of time (ARM 17.8.1213).

D.6. PPLM shall use a load

- out chute with telescopic spout d uring loa ding and unloading of coal ( ARM 17.8.1213).

D.7. A fabric filter control shall be used to contain dust when tran sferring coal to the silos ( ARM 17.8.1213).

D.8. As required by the Department and Section III.A.1, PPLM shall conduct a Method 5 test to

comp ly with the limit according to Section III.D.4 (ARM 17.8.1213).

Recordkeeping

D.9. All compliance source test recordkeeping shall be performed in accordance with the test method

used and the Montana Source Test Protocol and Procedures Manual. If Method 9 tes ts are conducted, the test reports must be maintained on

- site and must be submitted to the Department upon request. If visual surveys are performed, PPLM shall maintain a log to verify that the visual surveys were performed as specified in Section III.D. 5 . Each log entry must include the date, time, results of survey, (and results of subsequent Method 9, if applicable) and observer’s initials. If any corrective action is required, the time, date, observer’s initials, and any preventive or

corrective acti on taken must be recorded in the log (ARM 17.8.106 and ARM 17.8.1212).OP2953

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D.10. A log shall be kept including the date and time when a fabric filter control and a telescopic spout for unloading and transferring coal were not operated while the emissions units were operating. The log must include the reason the method of control was not in operation (ARM 17.8.1212).

Reporting

D.11. Any compliance source test reports must be submitted in accordance with the Montana Source Test Protocol and Procedures Manual (ARM 17.8.1 06 and ARM 17.8.1212).

D.12. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

D.13. The semiannual monitoring report shall provide (ARM 17.8.1212):

a. A summary o f the visual surveys and any corrective action taken

, and the results of Method 9 tests performed and logged during that semiannual period as specified by

Section III.D.5 and III.D. 9 ;

b. Summary of the log of when and why the filter fabric control and tele s copic spout were

not used while emissions units were operating during that semiannual period as specified by Section III.D.6, III.D.7, and, III.D.10.

c. Summary of the results of any required Method 5 test s that were conducted during that semiannual period as required by Section III.D. 8

.

E. EU4

– Coal Storage Piles

– Active and Reserve (Wind Erosion)

Condition(s) Pollutant/

Parameter Permit

Limit Compliance Demonstration

Method Frequency Reporting Frequency

E.1., E.3., E.4.,
E 5., E .6 ., E.7 Opacity 20% Visual Survey/

Method 9 Bi

- monthly Semi

- Annual

E.2., E.3., E.4.,
E.5., E.6 . , E.7 Reasonable

Precautions Ongoing Annual

Conditions

E.1. PPLM may not cause or authorize the emissions from the Coal Piles to be discharged into the

outdoor atm osphere that exhibit an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

E.2. PPLM shall not cause or authorize the production, handling, transportation, or storage of any material unless reasonable precautions to control emissi ons of particulate matter are taken. Such emissions of airborne particulate from any stationary source shall not exhibit an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.308).

Compliance Demonstration

E.3. PPLM shall conduct either a semiannual Method 9 source test or a weekly visual survey of visible

emissions on c oal s torage p iles

. Under the visual survey option, once per calendar week, during daylight hours, PPLM shall visually survey c oal storage piles for any visible emissions. If visible emissions are observed during the visual survey, PPLM must conduct a Method 9 source test. The Method 9 source test must begin within one hour of any observation of visible emissions. If visible emissions meet or exceed 15% opacity based on t he Method 9 source test, PPLM shallOP2953

- 0 6 12 Draft : 05/16/2011

immediately take corrective action to contain or minimize the source of emissions. If corrective actions are taken, then PPLM shall immediately conduct a subsequent visual survey (and subsequent Method 9 source test if visible emissions remain) to monitor compliance. The person conducting the visual survey shall record the results of the survey (including the results of any Method 9 source test performed) in a log, including any corrective action taken. Conducting a

vi sual survey does not relieve PPLM of the liability for a violation determined using Method 9 (ARM 17.8.101(27)).

If the visual surveys are not performed once per calendar week as specified above during the reporting period, then PPLM shall perform the M ethod 9 source tests on c oal s torage p iles for that reporting period.

Method 9 source tests must be performed in accordance with the Montana Source Test Protocol and Procedures Manual, except that prior notification of the test is not required. Each ob servation period must be a minimum of 6 minutes unless any one reading is 20% or greater, then the observation period must be a minimum of 20 minutes or until a violation of the standard has been documented, whichever is a shorter period of time (ARM 17.8. 1213).

Recordkeeping

E.4. All compliance source test recordkeeping shall be performed in accordance with the the test method used, and the Montana Source Test Protocol and Procedures Manual. If Method 9 tests are conducted, the test reports must be maintaine d on

- site and must be submitted to the Department upon request. If visual surveys are performed, PPLM shall maintain a log to verify that the visual surveys were performed as specified in Section III.E. 3 . Each log entry must include the date, time

, resul ts of survey (and results of subsequent Method 9, if applicable), a nd observer’s initials. Whether visual surveys or Method 9 test are conducted, if any corrective action is required, the time, date, observer’s initials, and any preventative or corrective action taken must be recorded in the log (ARM 17.8.106 and ARM 17.8.1212).

Reporting

E.5. Any compliance source test reports must be submitted in accordance with the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

E.6. The an nual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

E.7. The semiannual report shall provide a summary of the visual surveys and any corrective action taken, and th e results of any Method 9 tests performed and logged during that semiannual period

as specified by Section III.E.3 and III.E.4.

F. EU5

– Gasoline Storage Tank

Condition(s) Pollutant/

Parameter Permit

Limit Compliance Demonstration

Method Frequ ency Reporting Requirements

F. 1 ., F. 2

., F. 3 ., F. 4 ., F. 5

. Underground

gasoline tank 250 gallons

or > gasoline in

tank Submerged fill

pipe, unless tank is equipped with a vapor loss control

device or is a pressure tank Ongoing/when

unloading Semiannual

C onditionsOP2953

- 0 6 13 Draft : 05/16/2011

F.1. PPLM shall not load or permit the loading of gasoline into any stationary tank with a capacity of 250 gallons or more from any tank truck or trailer, except through a permanent submerged fill pipe, unless such tank is equipped with a vapor loss control device or is a pressure tank (ARM 17.8.324(3)).

Compliance Demonstration

F.2. PPLM shall use a submerged fill pipe during the loading of gasoline into any stationary tank unless the tank is equipped with a vapor loss control device or is a pressure ta nk as required in

section III.F. 1 (ARM 17.8.749 and ARM 17.8.1213).

Recordkeeping

F.3. PPLM shall maintain on site a log to monitor continuous use of the submerged fill pipe by maintaining a log of tank loading. The log shall include the date and time of loa ding (ARM 17.8.1212).

Reporting

F.4. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

F.5. The semiannual report shall provide a summary of the log of the gas oline storage tank loading during that semiannual period as specified in Section III.F.2 and III.F.3 (ARM 17.8.1212)

.

G. EU6

– Internal Combustion Engines (Vehicles)

Condition(s) Pollutant/

Parameter Permit Limit Compliance Demonstration

Method F requency Reporting Requirements

G.1., G.4., G.7.,
G.9., G.10.,

G.11 Opacity 20% Method 9 As required by the Department and

Section III.A.1 Semiannual

G.2., G.5., G.8.,
G.10., G.11 PM E = 1.026 * H 0.233 Burning low

sulfur fuel Ongoing Semiannual

G.3.,G. 6., G.8.,
G.10., G.11 Sulfur in Fuel 1lb of

sulfur/MMBtu Operational

Log Ongoing Semiannual

Conditions

G.1. PPLM may not cause or authorize emissions to be discharged into the outdoor atmosphere from any source that exhibits an opacity of 20% or greater ave raged over 6 consecutive minutes (ARM 17.8.304(2)).

G.2. PPLM shall not cause or authorize particulate matter caused by the combustion of fuel to be discharged from any stack or chimney into the outdoor atmosphere in excess of E = 1.026 * H

–

0.233 for existing fuel burning equipment, where H = heat input capacity in MMBtu/hr and E is the maximum allowable emission rate in lb/MMBtu (ARM 17.8.309).

G.3. PPLM shall not fire any liquid or solid fuels containing sulfur in excess of 1lb sulfur/MMBtu (ARM 17.8.322).OP2953

- 0 6 14 Draft : 05/16/2011

Co mpliance Demonstration

G.4. As required by the Department and Section III.A.1, PPL M shall perform a Method 9 test in accordance with the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1213).

G.5. PPLM shall burn low sulfur fuel to mo nitor compliance with the condition in Section III.G.2 (ARM 17.8.106 and ARM 17.8.1212).

G.6. Compliance with the limits in Section III.G.3 can be monitored by maintaining a log of the sulfur content of the fuel used (ARM 17.8.1213).

Recordkeeping

G.7. All compli ance source test recordkeeping shall be performed in accordance with the test method used and the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

G.8. PPLM shall maintain on site a log as described in Section III.G.6. PPLM shall include in that log the fuel type used and verification that the sulfur in fuel does not exceed the limit in Section III.G.3 (ARM 17.8.1212).

Reporting

G.9. All source test recordkeeping shall be performed in accordance with the test method used and th e Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

G.10. The annual compliance certific a tion required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

G.11. T he semiannu al report shall provide (ARM 17.8.1212):

a. A summary of the results of any Method 9 test performed and logged as specified by

Section III.G.4 and III.G. 7 ; and,

b. A summary of the log of the fuel type used and verific ation that the sulfur in fuel di d not

exce ed the limit as specified in Section III.G. 5 , and III.G. 8

H. EU7

– J.E. Corette Boiler

Condition(s) Pollutant/

Parameter Permit Limit Compliance Demonstration Reporting Requirements Method Frequency

H.1., H.1 8

., H. 21 ., H. 31

., H. 32 ., H. 40

., H. 4 3 .,H. 4 6

. , H. 4 7 Opacity 40% CEMS Ongoing Quarterly

Method 9 As required by

the Department

and Section

III.A.1 Semiannual

H.2., H. 19

., H. 21 ., H. 32

., H. 4 3 ., H. 4 6

., H. 4 7 Opacity 23%(1

- hour average) CEMS Ongoing Quarterly

17%(24

- hour average) CEMS Ongoing Quar terly

H.3., H.4.,

H. 20 ., H. 31

., H. 40 ., H. 4 6

., H. 4 7 PM E=0.882*H - 0.1664

Method 5 or

5B Semiannual Semiannual 0.26

lb/mmBtuOP2953

- 0 6 15 Draft : 05/16/2011

H.5., H. 21

., H. 33 ., H. 4 6

., H. 4 7 Sulfur in Fuel 1lb of sulfur/

mmBtu CEMS Ongoing Quarterly

H.6., H. 23

., H. 35 ., H. 4 6

., H. 4 7 Sulfur in Fuel 50 grains of

sulfur/100 cubic feet of gaseous

fuel Combustion of

Natural Gas or Propane Semiannual Semiannual

H.7., H. 21

., H. 25 ., H. 33

. , H. 36 ., H. 4 5

., H. 4 6 ., H. 4 7 SO 2 9,999,000 lb/calendar year CEMS and SIP Ongoing Quarterly

H.8., H.21.,
H.25., H.33.

, H.36., H.4 5

., H.4 6 ., H.4 7 SO 2 Calculated Limit

Three Hour

Emission

Limitation CEMS and SIP Ongoing Quarterly

H.9., H. 21

., H. 26 ., H. 33

. , H. 36 ., H. 4 5

., H. 4 6 ., H. 4 7 Buoyancy Flux 144.6 through

448.57 m

4 /sec 2 CEMS (flow

monitoring system) and

S IP Ongoing Quarterly

H.10., H. 21

., H. 36 ., H. 4 6

., H. 4 7 SO 2 Calculated Limit Daily Emissions CEMS and SIP Ongoing Quarterly

H.11., H. 22

., H. 31 ., H. 36

., H. 40 ., H. 4 5

., H. 4 6 ., H. 4 7 SO 2 Calculated

emission rate in

lb/hr Method 6 or

6c and SIP Annual Semiannua l

H.12., H.13.,

H. 24 Acid Rain

Provisions 40 CFR 72

- 78 40 CFR 72

- 78 40 CFR 72

- 78 Semiannual

H.14., H. 21

., H. 24

., H.34.,

H. 37 ., H. 4 4

., H. 4 6 ., H. 4 7 NOx 0.40 lb/mmBtu (average annual) CEMS Ongoing Quarterly

H.15., H. 27

., H. 38 ., H. 4 6

., H. 4 7 PM CAM Plan ARM 17.8.1506 Provisions

from CAM
Plan, Appendix K Ongoing Semiannual

H.16., H.17.,
H.28., H.29.,
H.30., H.39.,

H.41 ., H.42.,

H.46

. Mercury 0.9 lb/TBtu and

Installation/ Operation of Mercury Control System MEMS Ongoing Quarterly

Conditions

H.1. PPLM may not cau se or authorize emissions to be discharged into the outdoor atmosphere from

any sources installed on or before November 23, 1968, that exhibit an opacity of 40% or greater averaged over 6 consecutive minutes (ARM 17.8.304 and ARM 17.8.749).

H.2. PPLM shall not exhibit opacity from the boiler greater than 23% for a 1

- hour averaging period and greater than 17% for a 24

- hour averaging period (Department Notice of Violation and Order to Take Corrective Action dated February 28, 1985 and ARM 17.8.309).

H.3. Emissions sh all not exceed the value calculated using E = 0.882 * H

- 0.1664 , where H is the heat input capacity in MMBtu per hour and E is the maximum allowable particulate emissions rate in lbs per MMBtu (ARM 17.8.309).OP2953

- 0 6 16 Draft : 05/16/2011

H.4. PPLM shall not cause to be discharged into the atmosphere particulate matter in excess of 0.26 lb/MMBtu (ARM 17.8.749).

H.5. PPLM shall not burn liquid or solid fuels containing sulfur in excess of 1lb/MMBtu fired (ARM 17.8.322(4)).

H.6. PPLM shall not burn any gaseous fuel containing sulfur compounds in exces s of 50 grains per 100 cubic feet of gaseous fuel, calculated as hydrogen sulfide at standard conditions (ARM 17.8.322(5)).

H.7. PPLM shall not emit SO 2 in excess of the 9,999,000 lb/calendar year. This condition bec ame effective March 4, 1998. ( EPA approved the Billings/Laurel SO 2 Control Plan into the SIP on May 2, 2002

. )

H.8. PPLM shall not emit SO 2 from the J.E. Corette boiler in excess of the three

- hour emission

limitation as contained in the SO 2 SIP Appendix, Stipulation, Exhibit A, Section 3(A)(1)(a)

. ( EP A approved the Billings/Laurel SO 2 Control Plan into the SIP on May 2, 2002

. )

H.9. PPLM shall not, except as provided in the SO 2 SIP Appendix, Stipulation, Exhibit A, Section 2(A)(7), have a Buoyancy Flux of less than 144.6 m 4 /sec 3 or in excess of 448.57 m 4 /se c 3 at any
time

. ( EPA approved the Billings/Laurel SO 2 Control Plan into the SIP on May 2, 2002 .)

H.10. PPLM shall not emit SO 2 from the J.E. Corette boiler in excess of the sum of all of the three

- hour emission limitations pursuant to the SO 2 SIP Appendix, Sti pulation, Exhibit A, Section 3(A)(1)(a)

. ( EPA approved the Billings/Laurel SO 2 Control Plan into the SIP on May 2, 2002 .)

H.11. PPLM shall conduct annual emission testing to determine the sulfur dioxide emission rate in pounds per hour. ( EPA approved the Bill ings/Laurel SO 2 Control Plan into the SIP on May 2,

2002 .)

H.12. PPLM shall comply with all requirements in the Acid Rain Appendix H of this permit including the operation and maintenance of the SO 2 and NO

x Continuous Emissions Monitoring System (CEMS) (ARM 17. 8.1210(3)).

H.13. Emissions shall not be permitted in excess of any allowances that PPLM lawfully holds under Title IV of the FCAA or the regulations promulgated thereunder (ARM 17.8.1210(3)(a)).

a. A permit revision is not required for increases in emissions aut horized by allowances acquired pursuant to the acid rain program, provided that such increases do not require a permit revision under any other applicable requirement (ARM 17.8.1210(3)(b)).

b. The permittee may not use allowances as a defense to noncomplianc e with any other applicable requirement (ARM 17.8.1210(3)(c)).

c. Any allowances shall be accounted for according to the procedures established in regulations promulgated under Title IV of the FCAA (ARM 17.8.1210(3)(d)).

H.14. Pursuant to 40 CFR §76. 7 (a) (1) , the permittee shall not discharge or allow to be discharged,

emissions of NO

x to the atmosphere in excess of 0.4 lb/MMBtu on an annual average basis.

H.15. PPLM shall provide a reasonable assurance of compliance with emission limitations or standards

for the antici pated range of operations of the Tangential Coal

- Fired Boiler for PM (ARM 17.8.1504).OP2953

- 0 6 17 Draft : 05/16/2011

H.16. Beginning January 1, 2010, emissions of mercury from the boiler shall not exceed 0.9 pounds mercury per trillion British thermal units (lb/TBtu), calculated as a rolling 12

- month average (ARM 17.8.771).

H.17. PPLM shall install a mercury control system that oxidizes and sorbs emissions of mercury. PPLM shall implement the operation and maintenance of the mercury control system on or before January 1, 2010 (ARM 17.8.771).

Com pliance Demonstration

H.18. As required by the Department and Section III. A .1, PPLM shall perform a Method 9 test or another method approved by the Department to monitor compliance with the opacity limitation in

Section III.H.1

. M ethod 9 source tests must be p erformed in accordance with the Montana

Source Test Protocol and Procedures Manual ( ARM 17.8.1213 , ARM 17.8.106 )

H.19. PPLM shall operate and maintain the opacity CEM to monitor compliance with the opacity limitation in Section III.H.2. The testing shall be p erformed in accordance with the Opacity CEMS Appendix F and the Operation Modification Plan

– Revision 4 Appendix J of this permit.

As an addendum to the Operation Modification Plan

- Revision 4 Appendix J, PPLM shall be

allowed 30 to 60 minutes to succes sfully reset an ESP trip. In the event that this procedure fails in the time allotted, then the appropriate corrective actions contained in the Operation

Modification Plan

– Revision 4 Appendix J need to be initiated (ARM 17.8.1213).

H.20. PPLM shall perform a Method 5 or 5B particulate matter test semiannually during periods the equipment is in operation to monitor compliance with the particulate matter limit in Sections III.H.3 and III.H.4. The testing shall be performed in accordance with the Montana Source Test Protocol and Procedures Manual. Heat input shall be calculated in accordance with 40 CFR Part 75 Appendix F, Subsection 5

– Procedures for Heat Input (ARM 17.8.1213 and ARM 17.8.106).

H.21. PPLM shall operate, calibrate and maintain CEMS for the followin g (ARM 17.8.1213):

a. A CEMS for the measurement of SO 2 shall be operated on the stack (ARM 17.8.340 and 40 CFR 60.45);

b. A CEMS for the measurement of NO

x shall be operated on the stack (ARM 17.8.340 and 40 CFR 60.45);

c. A CEMS for the measurement of opacity shall be operated on the stack (ARM 17.8.340 and 40 CFR 60.45); and

d. Continuous monitoring for stack gas temperature, stack gas moisture (where necessary), megawatt production, and Btu per hour shall be performed on each unit (40 CFR 52.21)

H.22. PPLM shall c onduct a Method 6, 6c, or another method approved by the Department annually to monitor compliance with the condition in Section III.H.11. The tests shall be conducted in

accordance with the SO 2 CEMS Appendix F of this permit.

Pursuant to the SO 2 SIP A ppendix, the annual or semiannual Relative Accuracy Test Audits (RATA) may be substituted for the annual source tests provided that the flow rate RATA and the concentration RATA are performed simultaneously and additional calculations are made to

determine and report the data in pounds per hour of sulfur dioxide (ARM 17.8.1213 and SIP Appendix I).OP2953

- 0 6 18 Draft : 05/16/2011

H.23. PPLM shall monitor compliance with the emissions limit in condition III.H.6 by burning pipeline quality natural gas or propane (ARM 17.8.1213).

H.24. PPLM shall monit or compliance with the emission limitation in Section III.H.14 by following the requirements of 40 CFR Part 75, 40 CFR Part 76, and in accordance with the NOx CEMS Appendix (ARM 17.8.1213).

H.25. PPLM shall monitor compliance with the limitation in Section III. H.8 pursuant to the SO 2 SIP Appendix I of this permit except that the references on page 56.9.3.12(41) to 40 CFR Part 60, Appendix A, Section 6.0 and 40 CFR 60, Appendix B, Section 2.3 shall be changed to 40 CFR Part 75, Appendix A Section 6.0 and 40 CFR P art 75, Appendix B, Section 2.3, respectively (ARM 17.8.1213 and Appendix I).

H.26. PPLM shall monitor compliance with the limitation in Section III.H.9 in accordance with the SO 2 SIP Appendix I of this permit through use of the Flow Monitoring System required by 40 CFR

Part 75 and the SO 2 SIP Appendix except that the references on page 56.9.3.12(41) to 40 CFR Part 60 Appendix A, Section 6.0 and 40 CFR Part 60, Appendix B, Section 2.3 shall be changed to 40 CFR Part 75, Appendix A, Section 6.0 and 40 CFR Part 75 , Appendix B, Section 2.3, respectively. This includes the use of the temperature probe to determine hourly average stack gas temperature and the annubar to determine hourly average stack gas exit velocity (ARM 17.8.1213 and Appendix I).

H.27. PPLM shall monit or compliance by following the Compliance Assurance Monitoring (CAM) Plan (Appendix K). The CAM Plan written by PPLM in accordance with ARM 17.8.1504 is summarized in Appendix K and is available in full upon request by the Department or the facility (ARM 17.8.1503 and ARM 17.8.1213).

H.28. PPLM shall comply with all applicable standards and limitations, and the applicable operating, reporting, recordkeeping, and notification requirements contained in 40 CFR Part 75 (ARM 17.8.771).

H.29. Enforcement of Section III. H. 16. , where applicable, shall be determined by utilizing data taken from a Mercury Emission Monitoring System (MEMS). The MEMS shall be comprised of equipment as required in 40 CFR 75.81(a) and defined in 40 CFR 72.2. The above does not

relieve PPLM from me eting any applicable requirements of 40 CFR Part 75. Testing requirements shall be as specified in 40 CFR Part 75, and shall conform to the requirements of the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.771).

H.30. A MEMS sh all be installed, certified, and operating on the boiler stack outlet on or before January 1, 2010. Said monitor shall comply with the applicable provisions of 40 CFR Part 75. The monitors shall also conform with requirements included in Appendix L (ARM 17 .8.771).

Recordkeeping

H.31. All source test recordkeeping shall be performed in accordance with the test method used and the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

H.32. Records shall be prepared and data kept in accor dance with the Opacity CEMS Appendix E and the Operation Modification Plan

- Revision 4 Appendix J of this permit (ARM 17.8.1212).

H.33. Records shall be prepared and data kept in accordance with the SO 2 CEMS Appendix F of this permit (ARM 17.8.1212).

H.34. Records sh all be prepared and data kept in accordance with 40 CFR Part 75 and the NOx CEMS Appendix G of this permit (ARM 17.8.1212).OP2953

- 0 6 19 Draft : 05/16/2011

H.35. PPLM shall maintain, on si t e, a log verifying the use of pipeline quality natural gas (ARM 17.8.1212).

H.36. Records shall be prepared a nd data kept in accordance with the SO 2 SIP Appendix I of this permit (ARM 17.8.1212).

H.37. PPLM shall complete all recordkeeping for Section III.H.12 and III.H.13 as required by the Acid Rain Appendix H of this permit (ARM 17.8.1212).

H.38. Records shall be prepar ed and data kept in accordance with 40 CFR Part 64 and the CAM Appendix K of this permit (ARM 17.8.1212 and 40 CFR 64).

H.39. PPLM shall conduct recordkeeping pursuant to Appendix L ( ARM 17.8.771 and ARM

17 .8.1212).

Reporting

H.40. The testing results shall be subm itted to the Department in accordance with the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).

H.41. The owner or operator of any mercury

- emitting generating unit shall report to the Department within 30 days after the end o f each calendar quarter, as described in Appendix L (ARM 17.8.749):

a. The monthly average lb/TBtu mercury emission rate, for each month of the quarter;

b. The 12

- month rolling average lb/TBtu emission rate for each month of the reporting

quarter;

c. Number of o perating hours that the MEMS was unavailable or not operating within quality assurance limits (monitor downtime); and

H.42. The first quarterly report must be received by the Department by April 30, 2010, but shall not

include 12

- month rolling averages. The fir st quarterly report to include 12

- month rolling averages must be received by the Department by January 30, 2011 (ARM 17.8.749).

H.43. Excess emissions and monitoring systems performance reports shall be submitted in accordance with the Opacity CEMS Appendix E a nd the Operation Modification Plan

- Revision 4 Appendix J of this permit, except that reports shall only be required on a quarterly basis (ARM 17.8.1212).

H.44. Reports shall be submitted in accordance with 40 CFR Parts 72 through 78. The permittee shall

also submit to the Department the information required in the NOx CEMS Appendix G of this permit (ARM 17.8.1212).

H.45. PPLM shall submit reports in accordance with the SO 2 SIP Appendix I of this permit (ARM 17.8.1212).

H.46. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

H.47. The semiannual report shall provide (ARM 17.8.1212):OP2953

- 0 6 20 Draft : 05/16/2011 a. a summary of results of any Method 9, Method 5 or 5B, Method 6 or 6A, and any

additional met hod tests conducted that semiannual period . The actual test reports for Method 9 need only be submitted to the Department, upon request, as specified by Section III.B.8;

b. a summary of submittal of excess emissions and monitoring systems performance report s in accordance with the Opacity CEMS Appendix E, the SO 2 Appendix F, the NO

x CEMS Appendix G, and the Operation Modification Plan

– Revision 4 Appendix J of this permit;

c. a summary of compliance with 40 CFR Part 75 and Acid Rain Appendix H;

d. a summary of the log required by Section III.H.3 5 ; and

e. a summary of compliance with 40 CFR Part 64 (CAM), Appendix K of this permit.

I. EU8

– Plant Roads

Condition(s) Pollutant/

Parameter Permit Limit Method of Compliance Frequency of

Method Reporting

Requirements

I .1., I.3., I.4.,
I.5., I.6 Opacity 20% Visual Surveys Bi

- monthly Annual

I.2., I.3., I.4.,
I.5., I.6 Opacity 20% Reasonable

Precautions Ongoing Annual

Conditions

I.1. PPLM may not cause or authorize emissions from the Plant Roads to be discharged into the

ou tdoor atmosphere that exhibit an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

I.2. PPLM shall not cause or authorize the production, handling, transportation, or storage of any material unless reasonable precautions to contr ol emissions of airborne particulate matter are taken (ARM 17.8.308(1)).

Compliance Demonstration

I.3. PPLM shall perform a Method 9 test or another method approved by the Department to monitor compliance with the opacity limitation in Section III. I .1. PPLM shall conduct either a semiannual Method 9 source test or a weekly visual survey of visible emissions on the plant roads

. Under the visual survey option, once per calendar week, during daylight hours, PPLM shall visually survey the plant roads for any vis ible emissions. If visible emissions are observed during the visual survey, PPLM must conduct a Method 9 source test. The Method 9 source test must begin within one hour of any observation of visible emissions. If visible emissions meet or exceed 15%

opa city based on the Method 9 source test, PPLM shall immediately take corrective action to

contain or minimize the source of emissions. If corrective actions are taken, then PPLM shall immediately conduct a subsequent visual survey (and subsequent Method 9 source test if visible emissions remain) to monitor compliance. The person conducting the visual survey shall record the results of the survey (including the results of any Method 9 source test performed) in a log, including any corrective action taken. Conducting a visual survey does not relieve PPLM of the liability for a violation determined using Method 9 (ARM 17.8.101(27)).OP2953

- 0 6 21 Draft : 05/16/2011

If the visual surveys are not performed once per calendar week as specified above during the reporting period, then PPLM shall perform the Method 9 source tests on the plant roads for that reporting period.

Method 9 source tests must be performed in accordance with the Montana Source Test Protocol and Procedures Manual, except that prior notification of the test is not require d. Each observation period must be a minimum of 6 minutes unless any one reading is 20% or greater, then the observation period must be a minimum of 20 minutes or until a violation of the standard has been documented, whichever is a shorter period of time (ARM 17.8.1213).

Recordkeeping

I.4. If visual surveys are performed, PPLM shall maintain on site a log to verify that the visual surveys were performed as specified in Section III. I

. 3 . Each log entry must include the date, time, results of survey (and resul ts of subsequent Method 9, if applicable), and observer’s initials If any corrective action is required, the time, date, observer’s initials, and any preventive or corrective action taken must be recorded in the log (ARM 17.8.1212).

Reporting

I.5. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

I.6. The semiannual report shall provide a summary of the visual surveys and any corrective action taken, and the re sults of any Method 9 tests performed and logged during that semiannual period as specified by Section III. I. 3 and III.I. 4 (ARM 17.8.1212).

J. EU9

– Emergency Diesel Generators

Condition(s) Pollutant/Parameter Permit Limit Compliance Demonstration

Method Frequency Reporting Requirements

J.1., J. 5 ., J. 8

., J. 1 1 ., J. 1 2 Opacity 20% Method 9 As required by

the Department

and Section

III.A.1 Semiannual

J.2., J. 6

., J.9.,

J. 11 ., J. 12

., Particulate from fuel

combustion E=1.026*H

0.233 Refinery

Quality No . 2

Fuel Oil Ongoing Semiannual

J.3., J. 6

., J.9.,

J. 11 ., J. 12

. Sulfur compounds in

fuel (gaseous) 50 grains per

100 SCF Fuel analysis

provided by

the fuel provider Annual Semiannual

J.4, J.7, J.10,

J.13 R equirements to

demonstrate initial

and continuous compliance with

HAPs emission

limitations and operating limitations. 40 CFR 63, Subpart ZZZZ 40 CFR 63,

Subpart ZZZZ 40 CFR 63,

Subpart ZZZZ 40 CFR 63,

Subpart ZZZZOP2953

- 0 6 22 Draft : 05/16/2011

Conditions

J.1. PPLM may not cause or authorize emissions to be discharged into the outdo or atmosphere from any source that exhibits an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

J.2. PPLM shall not cause or authorize particulate matter caused by the combustion of fuel to be discharged from any stack or chimne y into the outdoor atmosphere in excess of E = 1.026 * H
0.233 , where H is the heat input capacity in MMBtu per hour and E is the maximum allowable particulate emissions rate in pounds per MMBtu (ARM 17.8.309).

J.3. PPLM shall not burn any gaseous fuel contain ing sulfur compounds in excess of 50 grains per 100 standard cubic feet of gaseous fuel, calculated as hydrogen sulfide at standard conditions (ARM 17.8.322 (5)).

J.4. PPLM shall comply with all applicable standards and limitations, and the reporting,

recordke eping, and notification requirements contained in 40 CFR 63, Subpart ZZZZ, National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines

, for any applicable diesel engine ( ARM 17.8.342 and 40 CFR 63, Sub part ZZZZ)

.

Compliance Demonstration

J.5. As required by the Department and Section III.A.1, PPL shall perform a Method 9 test to monitor compliance with the permit limit in Section III.J.1. The testing shall be performed in accordance

with the Montana Sour ce Test Protocol and Procedures Manual, or another method approved by the Department (ARM 17.8.106 and ARM 17.8. 1213)

J.6. PPLM shall monitor compliance with Sections J.2. and J.3 by burning refinery quality No. 2 fuel oil (ARM 17.8.1212).

J.7. Compliance monito ring shall be perform ed in accordance with 40 CFR 63, Subpart ZZZZ , as appropriate (ARM 17.8.342 and 40 CFR 63, Subpart ZZZZ ).

Recordkeeping

J.8. All compliance source testing recordkeeping shall be performed in accordance with the Source

Test Protocol and Pr ocedures Manual, and shall be maintained on site. Method 9 source test reports for opacity need not be submitted unless requested by the Department (ARM 17.8.106 and ARM 17.8.1212).

J.9. PPLM shall maintain a log on site of the fuel analysis received from th e fuel provider (ARM 17.8.1212).

J.10. Recordkeeping shall be performed in accordance with 40 CFR 63. ZZZZ , as appropriate (ARM 17.8.342 and 40 CFR 63, Subpart ZZZZ ).

Reporting

J.11. The annual compliance certification required by Section V.B must contain a certific ation statement for the above applicable requirements (ARM 17.8.1212).

J.12. The semiannual report shall provide (ARM 17.8.1212):OP2953

- 0 6 23 Draft : 05/16/2011 a. a summary the results of any Method 9 tests performed and logged during that semiannual period (ARM 17.8.1212) ; and

b. a summary of the log of the fuel analysis received from the fuel provider.

J.13. Re porting shall be performed in accordance with 40 CFR 63. ZZZZ , as appropriate (ARM 17.8.342 and 40 CFR 63, Subpart ZZZZ ).

K. EU10

– Diesel Tank

Condition(s) Pollutant/

Parameter Permit

Limit C ompliance Demonstration

Method Frequency Reporting Requirements

K.1., K.2.,
K.3., K.4.,

K.5 Opacity 20% Method 9 As required by the Department and

Section III.A.1 Annual

Conditions

K.1. PPLM may not cause or authorize emissions to be discharged into the outdoor atmosphere from any source that exhibits an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

Compliance Demonstration

K.2. As required by the Department and Section III.A.1, PPL shall perform a Method 9 t est to monitor compliance with t he permit limit in Section III.K .1. The testing shall be performed in accordance with the Montana Source Test Protocol and Procedures Manual, or another method approved by the Department (ARM 17.8.106 and ARM 1 7.8 .1213)

Recordkeeping

K. 3

. All compliance source testing recordkeeping shall be performed in accordance with the Source Test Protocol and Procedures Manual, and shall be maintained on site. Method 9 source test reports for opacity need not be submitted unless re quested by the Department (ARM 17.8.106 and ARM 17.8.1212)

.

Reporting

K. 4

. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

K. 5

. The semiannual mon itoring report shall provide a summary of results of any Method 9 test conducted during the period (ARM 17.8.1212).

L. EU11

– Mercury Oxidizer/Sorbent Handling System

Condition(s) Pollutant/

Parameter Permit

Limit Compliance Demonstration

Method Frequency Reporting Requirements

L.1., L.3., L.4.,
L.5., L.6., L.7. Opacity 20% Visual Survey/

Method 9 Bi

- monthly Semiannual

L.2., L.3., L.4.,
L.5., L.6., L.7. Oxidizer/Sorbent

Handling System Operate/

maintain

bin vent SemiannualOP2953

- 0 6 24 Draft : 05/16/2011

Conditions

L.1. PPL M may not cause or authorize emissions to be discharged into the outdoor atmosphere from any source that exhibits an opacity of 20% or greater averaged over 6 consecutive minutes (ARM 17.8.304(2)).

L.2. PPLM shall operate and maintain the mercury oxidizer/so rbent handling system, including the bin vent filter system, to provide the maximum air pollution control for that which the system was designed (ARM 17.8.749).

Compliance Demonstration

L.3. Under the visual survey option, bi

- monthly during daylight hours, PP LM shall visually survey the Mercury Oxidizer/Sorbent Handling System for any sources of excessive emissions. PPLM shall conduct either a semiannual Method 9 source test or a weekly visual survey of visible emissions

on the Mercury Oxidizer/Sorbent Handli ng System

. Under the visual survey option, once per calendar week, during daylight hours, PPLM shall visually survey the Mercury Oxidizer/Sorbent Handling System for any visible emissions. If visible emissions are observed during the visual

survey, PPLM must conduct a Method 9 source test. The Method 9 source test must begin within one hour of any observation of visible emissions. If visible emissions meet or exceed 15% opacity based on the Method 9 source test, PPLM shall immediately take corrective act ion to contain or minimize the source of emissions. If corrective actions are taken, then PPLM shall immediately conduct a subsequent visual survey (and subsequent Method 9 source test if visible emissions remain) to monitor compliance. The person conduc ting the visual survey shall record the results of the survey (including the results of any Method 9 source test performed) in a log, including any corrective action taken. Conducting a visual survey does not relieve PPLM of the liability for a violation determined using Method 9 (ARM 17.8.101(27)).

If the visual surveys are not performed once per calendar week as specified above during the reporting period, then PPLM shall perform the Method 9 source tests on the Mercury Oxidizer/Sorbent Handling System for that reporting period.

Method 9 source tests must be performed in accordance with the Montana Source Test Protocol and Procedures Manual, except that prior notification of the test is not required. Each observation period must be a minimum of 6 mi nutes unless any one reading is 20% or greater, then the observation period must be a minimum of 20 minutes or until a violation of the standard has been documented, whichever is a shorter period of time (ARM 17.8.1213).

Recordkeeping

L.4. All source test rec ordkeeping shall be performed in accordance with the Montana Source Test Protocol and Procedures Manual. If Method 9 tests are conducted, the test reports must be

maintained on

- site and must be submitted to the Department upon request. If visual surveys are performed, PPLM shall maintain a log to verify that the visual surveys were performed as specified in Section III. L.3 . Each log entry must include the date, time, results of survey, and observer’s initials. Whether visual surveys or Method 9 tests ar e conducted, if any corrective action is required, the time, date, observer’s initials, and any preventative or corrective action taken must be recorded in the log (ARM 17.8.106 and ARM 17.8.1212).

Reporting

L.5. All method reports shall be submitted in accor dance with the Montana Source Test Protocol and Procedures Manual (ARM 17.8.106 and ARM 17.8.1212).OP2953

- 0 6 25 Draft : 05/16/2011

L.6. The annual compliance certification required by Section V.B must contain a certification statement for the above applicable requirements (ARM 17.8.1212).

L.7. The semiannual report shall provide (ARM 17.8.1212):

a. A summary of any corrective action performed as a result of the visual survey requirement; and

b. A summary of the results of any Method 9 source tests performed during the semiannual period.OP2953

- 0 6 26 Draft : 05/16/2011 SECTIO N IV. NON

- APPLICABLE REQUIREMENTS

Air Quality Administrative Rules of Montana (ARM) and Federal Regulations identified as not applicable to the facility or to a specific emissions unit at the time of the permit issuance are listed below (ARM 17.8.1214). The following list does not preclude the need to comply with any new requirements that may become applicable during the permit term.

A. Facility

- Wide

The following table contains non

- applicable requirements, which are administrated by the Air

Resources Mana gement Bureau of the Department of Environmental Quality.

Rule Citation Reason
This is not an affected facility under this rule.

Or t he facility is not in this source category. 40 CFR 60, SUBPART B
40 CFR 60, SUBPART C
40 CFR 60, SUBPART Ca

40 CF R 60, SUBPART Cb
40 CFR 60, SUBPART D
40 CFR 60, SUBPART Da
40 CFR 60, SUBPART Db
40 CFR 60, SUBPART Dc
40 CFR 60, SUBPART E
40 CFR 60, SUBPART Ea
40 CFR 60, SUBPART Eb
40 CFR 60, SUBPART F
40 CFR 60, SUBPART G
40 CFR 60, SUBPART H

40 CFR 60, SUBPART I
40 CFR 60, SUBPART J
40 CFR 60, SUBPART K
40 CFR 60, SUBPART L
40 CFR 60, SUBPART M
40 CFR 60, SUBPART N
40 CFR 60, SUBPART O
40 CFR 60, SUBPART P
40 CFR 60, SUBPART Q
40 CFR 60, SUBPART R
40 CFR 60, SUBPART S

40 CF R 60, SUBPART T
40 CFR 60, SUBPART U
40 CFR 60, SUBPART V
40 CFR 60, SUBPART W
40 CFR 60, SUBPART X
40 CFR 60, SUBPART Y
40 CFR 60, SUBPART Z
40 CFR 60, SUBPART AA
40 CFR 60, SUBPART A A A
40 CFR 60, SUBPART BB
40 CFR 60, SUBPART CC

40 CFR 60, SUBPART DD
40 CFR 60, SUBPART EE
40 CFR 60, SUBPART GG
40 CFR 60, SUBPART HH
40 CFR 60, SUBPART KKOP2953

- 0 6 27 Draft : 05/16/2011 Rule Citation Reason

40 CFR 60, SUBPART LL
40 CFR 60, SUBPART MM
40 CFR 60, SUBPART NN
40 CFR 60, SUBPART PP
40 CFR 60, SUBPART QQ
40 CFR 60, SUBPART RR
40 CFR 60, SUBPART SS
40 CFR 60, SUBPART TT
40 CFR 60, SUBPART UU
40 CFR 60, SUBPART VV
40 CFR 60, SUBPART WW
40 CFR 60, SUBPART XX
40 CFR 60, SUBPART BBB
40 CFR 60, SUBPART DDD
40 CFR 60, SUBPART FFF
40 CFR 60, SUBPART GGG

40 CFR 60, SUBPART HHH
40 CFR 60, SUBPART III
40 CFR 60, SUBPART JJJ
40 CFR 60, SUBPART KKK
40 CFR 60, SUBPART LLL
40 CFR 60, SUBPART NNN
40 CFR 60, SUBPART OOO
40 CFR 60, SUBPART PPP
40 CFR 60, SUBPART QQQ
40 CFR 60, SUBPART RRR
40 CFR 60, SU BPART SSS
40 CFR 60, SUBPART TTT
40 CFR 60, SUBPART UUU
40 CFR 60, SUBPART VVV
40 CFR 61, SUBPART B
40 CFR 61, SUBPART C
40 CFR 61, SUBPART D
40 CFR 61, SUBPART E
40 CFR 61, SUBPART F
40 CFR 61, SUBPART H
40 CFR 61, SUBPART I

40 CFR 6 1, SUBPART J
40 CFR 61, SUBPART K
40 CFR 61, SUBPART L
40 CFR 61, SUBPART N
40 CFR 61, SUBPART O
40 CFR 61, SUBPART P
40 CFR 61, SUBPART Q
40 CFR 61, SUBPART R
40 CFR 61, SUBPART T
40 CFR 61, SUBPART V
40 CFR 61, SUBPART W
40 CFR 61, SUBPART Y
40 CFR 61, SUBPART BB
40 CFR 61, SUBPART FF
40 CFR 63, SUBPART F
40 CFR 63, SUBPART G
40 CFR 63, SUBPART HOP2953

- 0 6 28 Draft : 05/16/2011 Rule Citation Reason

40 CFR 63, SUBPART I
40 CFR 63, SUBPART L
40 CFR 63, SUBPART M
40 CFR 63, SUBPART N
40 CFR 63, SUBPART O
40 CFR 63, S UBPART Q
40 CFR 63, SUBPART R
40 CFR 63, SUBPART T
40 CFR 63, SUBPART W
40 CFR 63, SUBPART Z
40 CFR 63, SUBPART EE
40 CFR 82, SUBPART A This rule is not applicable because the facility does not conduct the activities addressed by this rule. 40 CFR 82, SUBPART C
40 CFR 82, SUBPART D
40 CFR 82, SUBPART E
40 CFR 82, SUBPART G

B. Emission s Units

EU1

– Ash Handling System

Rule Citation Reason

ARM 17.8.309 This rule is not applicable because this emissions unit is not fuel burning equipment.

ARM 17.8.322 This rule is not applicable because the pollutant regulated by this rule is not emitted from this

emissions unit.

40 CFR 82 SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit.

40 CFR 72 These regulations are not applicable because the emissions unit is not an affected facility under acid

rain 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78

EU2

– Auxiliary Boiler

Rule Citation Reason

ARM 17.8.310 This rule is not applicable to particulate matter emitted from fuel burning equipment.
40 CFR 82,SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit.

40 CFR 72 These regulations are not applicab le because the emissions unit is not an affected facility under acid

rain. 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78OP2953

- 0 6 29 Draft : 05/16/2011

EU3

– Coal Handling System

Rule Citation Reason

ARM 17.8.309 This rule is not applicable because this emissions

un it is not fuel burning equipment.

ARM 17.8.322 This rule is not applicable because the pollutant regulated by this rule is not emitted from this

emissions unit. ARM 17.8, Subchapter 7 No MAQP is required to date for the emissions unit. Future changes ma y trigger applicability of the requirement.
40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit.

40 CFR 72 These regulations are not applicable because the

emissions unit is not an affected facility under acid

rain. 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78

EU4

– Coal Storage Piles

Rule Citation Reason

ARM 17.8.309 This rule is not applicable because this emissions unit is not fuel burning equipment.

AR M 17.8.322 This rule is not applicable because the pollutant regulated by this rule is not emitted from this

emissions unit. ARM 17.8, Subchapter 7 No MAQP is required to date for the emissions unit. Future changes may trigger applicability of the requir ement. 40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit. 40 CFR 82, SUBPART F

40 CFR 72 These regulations are not applicable because the

emissions unit is not an affecte d facility under acid

rain 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78

EU5

– Gasoline Storage Tank

None requested.OP2953

- 0 6 30 Draft : 05/16/2011

EU6

– Internal Combustion Engines (Vehicles)

Rule Citation Reason

ARM 17.8.308 This rule is not applicable b ecause this facility or emissions unit does not emit fugitive particulate

matter.

ARM 17.8.310 This rule is not applicable to particulate matter emitted from fuel burning equipment. ARM 17.8, Subchapter 7 No MAQP is required to date for the emissions uni t. Future changes may trigger applicability of the requirement.
40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit.

40 CFR 72 These regulations are not applicable because t he emissions unit is not an affected facility under acid

rain. 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78

EU7

– J. E. Corette Boiler

Rule Citation Reason

ARM 17.8.310 This rule is not applicable to particulate matter

emitted from fuel burning equipment
40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit. 40 CFR 82, SUBPART F

40 CFR 73, SUBPART G This rule is not applicable because the facility does

not conduct the activities addressed by this rule.

EU8

– Plant Roads

Rule Citation Reason

ARM 17.8.304 This emissions unit is regulated by ARM 17.8.308.

ARM 17.8.309 This rule is not applicable because this emissions unit is not fuel burning equipment.

A RM 17.8.322 This rule is not applicable because the pollutant regulated by this rule is not emitted from this

emissions unit. ARM 17.8, Subchapter 7 No MAQP required to date for the emissions unit. Future changes may trigger applicability of the requirem ent. 40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

unit. 40 CFR 82, SUBPART F

40 CFR 72 These regulations are not applicable because the

emissions unit is not an affected facility under acid

rain 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78OP2953

- 0 6 31 Draft : 05/16/2011

EU9

– Emergency Diesel Generators

Rule Citation Reason

ARM 17.8.310 This rule is not applicable to particulate matter emitted from fuel burning equipment
ARM 17.8, Subchapter 7 No MAQP required to date for the emissions unit. Future changes may trigger applicability of the requirement.
40 CFR 82, SUBPART B This rule is not applicable because the activities identified are not conducted as part of this emissions

uni t.

40 CFR 82, SUBPART F

40 CFR 72 These regulations are not applicable because the emissions unit is not an affected facility under acid

rain. 40 CFR 73

40 CFR 75

40 CFR 76

40 CFR 77

40 CFR 78OP2953

- 0 6 32 Draft : 05/16/2011 SECTION V GENERAL PERMIT CONDITIONS

A. Complia nce Requirements ARM 17.8, Subchapter 12, Operating Permit Program, §1210 (2)(a)

- (c) & (e), §1206(6)(c)&(b)

1. The permittee must comply with all conditions of the permit. Any noncompliance with the terms or conditions of the permit constitutes a violation of the Montana Clean Air Act, and may result in enforcement action, permit modification, revocation and reissuance, or termination, or denial of a permit renewal application under ARM Title 17, Chapter 8, Subchapter 12.

2. The filing of a request by the perm ittee for a permit modification, revocation, and reissuance, or termination, or of a notification of planned changes or anticipated noncompliance does not stay any permit condition.

3. It shall not be a defense for a permittee in an enforcement action that i t would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of the permit. If appropriate, this factor may be considered as a mitigating factor in assessing a penalty for noncompliance with an a pplicable requirement if the source demonstrates

that both the health, safety, or environmental impacts of halting or reducing operations would be more serious than the impacts of continuing operations, and that such health, safety, or environmental impact s were unforeseeable and could not have otherwise been avoided.

4. The permittee shall furnish to the Department, within a reasonable time set by the Department (not to be less than 15 days), any information that the Department may request in writing to

dete rmine whether cause exists for modifying, revoking and reissuing, or terminating the permit, or to determine compliance with the permit. Upon request, the permittee shall also furnish to the Department copies of those records that are required to be kept pursuant to the terms of the permit. This subsection does not impair or otherwise limit the right of the permittee to assert the confidentiality of the information requested by the Department, as provided in 75

- 2

- 1 05, MCA.

5. Any schedule of compliance for applicable requirements with which the source is not in compliance at the time of permit issuance shall be supplemental to, and shall not sanction noncompliance with the applicable requirements on which it was based.

6. For applicable requirements that will become effective during the permit term, the source shall meet such requirements on a timely basis unless a more detailed plan or schedule is required by the applicable requirement or the Department.

B. Certification Requirements ARM 17.8 Subchapter 12 Opera ting Permit Program §1207 and §1213(7)(a)&(c)

- (d)

1. Any application form, report, or compliance certification submitted pursuant to ARM Title 17, Chapter 8, Subchapter 12 shall contain certification by a responsible official of truth, accuracy, and complete ness. This certification and any other certification required under ARM Title 17, Chapter 8, Subchapter 12 shall state that, based on information and belief formed after reasonable inquiry, the statements and information in the document are true, accurate , and complete.

2. Compliance certifications shall be submitted by February 15 of each year, or more frequently if otherwise specified in an applicable requirement or elsewhere in the permit. Each certification must include the required information for the previous calendar year (i.e., January 1

– December 31).OP2953

- 0 6 33 Draft : 05/16/2011

3. Compliance certifications shall include the following:

a. The identification of each term or condition of the permit that is the basis of the certification;

b. The identification of the method(s) or ot her means used by the owner or operator for determining the status of compliance with each term and condition during the certification period, consistent with ARM 17.8.1212;

c. The status of compliance with each term and condition of the permit for the perio d covered by the certification, including whether compliance during the period was continuous or

intermittent (based on the method or means identified in ARM 17.8.1213(7)(c)(ii), as described above); and

d. Such other facts as the Department may require

, to determine the compliance status of the

source.

4. All compliance certifications must be submitted to the Environmental Protection Agency, as well as to the Department, at the addresses listed in the Notification Addresses Appendix of this permit.

C. Permit Shi eld ARM 17.8 Subchapter 12 Operating Permit Program §1214(1)

- (4)

1. The applicable requirements and non

- federally enforceable requirements are included and specifically identified in this permit and the permit includes a pre cise summary of the requirements n ot applicable to the source. Compliance with the conditions of the permit shall be deemed compliance with any applicable requirements and any non

- federally enforceable requirements as of the date of permit issuance.

2. The permit shield described in 1 above shall remain in effect during the appeal of any permit action (renewal, revision, reopening, or revocation and reissuance) to the Board of Environmental Review (Board)

, until such time as the Board renders its final decision.

3. Nothing in this permit alter s or affects the following:

a. The provisions of Sec. 7603 of the FCAA, including the authority of the administrator under that section;

b. The liability of an owner or operator of a source for any violation of applicable requirements prior to or at the time o f permit issuance;

c. The applicable requirements of the A cid R ain P rogram, consistent with Sec. 7651g(a) of the
FCAA;

d. The ability of the administrator to obtain information from a source pursuant to Sec. 7414 of the FCAA;

e. The ability of the Department to obtain information from a source pursuant to the Montana Clean Air Act, Title 75, Chapter 2, MCA;

f. The emergency powers of the Department under the Montana Clean Air Act, Title 75, Chapter 2 MCA; andOP2953

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g. The ability of the Department to establish or revise r equirements for the use of r easonably

a vailable c ontrol t echnology (RACT) as defined in ARM Title 17, Chapter 8. However, if the inclusion of a RACT into the permit pursuant to ARM Title 17, Chapter 8, Subchapter 12 is appealed to the B oard, the permit sh ield as it applies to the source's existing permit shall

remain in effect until such time as the B oard has rendered its final decision.

4. Nothing in this permit alters or affects the ability of the Department to take enforcement action

for a violation of an applicable requirement or permit term demonstrated pursuant to ARM 17.8.106, Source Testing Protocol.

5. Pursuant to ARM 17.8.132, for the purpose of submitting a compliance certification, nothing in these rules shall preclude the use, including the exclusi ve use, of any credible evidence or information relevant to whether a source would have been in compliance. However, when compliance or noncompliance is demonstrated by a test or procedure provided by permit or other applicable requirements, the source sh all then be presumed to be in compliance or noncompliance unless that presumption is overcome by other relevant credible evidence.

6. The permit shield will not extend to minor permit modifications or changes not requiring a permit revision (see Sections I & J).

7. The permit shield will extend to significant permit modifications and transfer or assignment of ownership (see Sections K & O ).

D. Monitoring, Recordkeeping, and Reporting Requirements ARM 17.8, Subchapter 12, Operating Permit Program, §1212(2) &(3)

1. U nless otherwise provided in this permit, the permittee shall maintain compliance monitoring records that include the following information:

a. The date, place as defined in the permit, and time of sampling or measurement;

b. The date(s) analyses were performed ;

c. The company or entity that performed the analyses;

d. The analytical techniques or methods used;

e. The results of such analys e s; and

f. The operating conditions at the time of sampling or measurement.

2. The permittee shall retain records of all required monit oring data and support information for a period of at least 5 years from the date of the monitoring sample, measurement, report, or application. Support information includes all calibration and maintenance records and all original strip

- chart recordings f

or continuous monitoring instrumentation, and copies of all reports required by the permit. All monitoring data, support information, and required reports and summaries may be maintained in computerized form at the plant site if the information is made

av ailable to Department personnel upon request, which may be for either hard copies or computerized format. Strip

- charts must be maintained in their original form at the plant site and shall be made available to Department personnel upon request.

3. The permi ttee shall submit to the Department, at the addresses located in the Notification Addresses Appendix of this permit, reports of any required monitoring by February 15 and August 15 of each year, or more frequently if otherwise specified in an applicable re quirement orOP2953

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elsewhere in the permit. The monitoring report submitted on February 15 of each year must include the required monitoring information for the period of July 1 through December 31 of the previous year. The monitoring report submitted on Augus t 15 of each year must include the required monitoring information for the period of January 1 through June 30 of the current year. All instances of deviations from the permit requirements must be clearly identified in such reports. All required reports must be certified by a responsible official

, consistent with ARM

17.8.1207.

E. Prompt Deviation Reporting ARM 17.8, Subchapter 12, Operating Permit Program §1212(3)(c)

The permittee shall promptly report deviations from permit requirements, including those attributable to upset conditions as defined in the permit, the probable cause of such deviations, and any corrective actions or preventive measures taken. To be considered prompt, deviations shall be reported to the Department within the following timefra mes (unless otherwise specified in an applicable requirement):

1. For deviations which may result in emissions potentially in violation of permit limitations:

a. An initial phone notification (or faxed or electronic notification) describing the incident

within 24 hours (or the next business day) of discovery; and,

b. A follow

- up written, faxed, or electronic report within 30 days of discovery of the deviation that describes the probable cause of the reported deviation and any corrective actions or preventative me asures taken.

2. For deviations attributable to malfunctions, deviations shall be reported to the Department in accordance with the malfunction reporting requirements under ARM 17.8.110; and

3. For all other deviations, deviations shall be reported to the Depa rtment via a written, faxed, or electronic report within 90 days of discovery (as determined through routine internal review by the permittee).

Prompt deviation reports do not need to be resubmitted with regular semiannual (or other routine) reports, but may be referenced by the date of submittal.

F. Emergency Provisions ARM 17.8, Subchapter 12, Operating Permit Program, §1201(13) and §1214(5), (6)&(8)

1. An "emergency" means any situation arising from sudden and reasonably unforeseeable events beyond the cont

rol of the source, including acts of God, which situation requires immediate corrective action to restore normal operation, and that causes the source to exceed a technology

based emission limitation under this permit due to unavoidable increases in emissi ons attributable to the emergency. An emergency shall not include noncompliance to the extent caused by improperly designed equipment, lack of reasonable preventive maintenance, careless or improper operation, or operator error.

2. An emergency constitutes an affirmative defense to an action brought for noncompliance with a technology

- based emission limitation if the permittee demonstrates through properly signed, contemporaneous logs, or other relevant evidence that:

a. An emergency occurred and that the perm ittee can identify the cause(s) of the emergency;

b. The permitted facility was at the time being properly operated;OP2953

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c. During the period of the emergency, the permittee took all reasonable steps to minimize

levels of emissions that exceeded the emission stand ards, or other requirements in the permit;

and

d. The permittee submitted notice of the emergency to the Department within 2 working days of the time when emission limitations were exceeded due to the emergency. This notice fulfills the requirements of ARM 17.8.1212(3)(c). This notice must contain a description of the emergency, any steps taken to mitigate emissions, and corrective actions taken.

3. These emergency provisions are in addition to any emergency, malfunction or upset provision contained in any a pplicable requirement.

G. Inspection and Entry ARM 17.8, Subchapter 12, Operating Permit Program §1213(3)&(4)

1. Upon presentation of credentials and other requirements as may be required by law, the permittee shall allow the Department, the administrator or a n authorized representative (including an authorized contractor acting as a representative of the Department or the administrator) to perform the following:

a. Enter the premises where a source required to obtain a permit is located or emissions

- related

acti vity is conducted, or where records must be kept under the conditions of the permit;

b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of the permit;

c. Inspect at reasonable times any facilities, emission unit s , equipment (including monitoring and air pollution control equipment), practices, or operations regulated or required under the permit; and

d. As authorized by the Montana Clean Air Act and rules promulgated thereunder, sample or

monitor at reasonable time s any substances or parameters at any location for the purpose of assuring compliance with the permit or applicable requirements.

2. The permittee shall inform the inspector of all applicable workplace safety rules or requirements at the time of the inspecti on. This section shall not limit in any manner the Department's statutory right of entry and inspection as provided for in 75

- 2

- 403, MCA.

H. Fee Payment ARM 17.8, Subchapter 12, Operating Permit Program, §1210(2)(f), and A RM 17.8, Subchapter 5, Air Quality Permit Application, Operation and Open Burning Fees §505(3)

- (5) ( STATE ONLY )

1. The permittee must pay application and operating fees, pursuant to ARM Title 17, Chapter 8, Subchapter 5.

2. Annual ly , the Department shall provide the permittee with written notic e of the amount of the fee and the basis for the fee assessment. The air quality operation fee is due 30 days after receipt of the notice, unless the fee assessment is appealed pursuant to ARM 17.8.511. If any portion of the fee is not appealed, that por tion of the fee that is not appealed is due 30 days after receipt of the notice. Any remaining fee, which may be due after completion of an appeal, is due immediately upon issuance of the Board's decision or upon completion of any judicial review of the B oard's

decision.OP2953

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3. If the permittee fails to pay the required fee (or any required portion of an appealed fee) within 90 days of the due date of the fee, the Department may impose an additional assessment of 15% of the fee (or any required portion of an app ealed fee) or $100, whichever is greater, plus interest on the fee (or any required portion of an appealed fee) computed at the interest rate established under

15

- 31

- 510(3), MCA.

I. Minor Permit Modifications ARM 17.8, Subchapter 12, Operating Permit Program , §1226(3)&(11)

1. An application for a minor permit modification need only address in detail those portions of the permit application that require revision, updating, supplementation, or deletion, and may reference any required information that has been pre viously submitted.

2. The permit shield under ARM 17.8.1214 will not extend to any minor modifications processed pursuant to ARM 17.8.1226.

J. Changes Not Requiring Permit Revision ARM 17.8, Subchapter 12, Operating Permit Program, §1224(1)

- (3), (5)&(6)

1. The p ermittee is authorized to make changes within the facility as described below, provid ed the following conditions are met:

a. The proposed changes do not require the permittee to obtain a Montana Air Quality Permit under ARM Title 17, Chapter 8, Subchapter 7;

b. The proposed changes are not modifications under Title I of the FCAA, or as defined in ARM Title 17, Chapter 8, Subchapters 8, 9 or 10;

c. The emissions resulting from the proposed changes do not exceed the emissions allowable

under th is permit, whether ex pressed as a rate of emissions, or in total emissions;

d. The proposed changes do not alter permit terms that are necessary to enforce applicable emission limitations on emission units covered by the permit; and

e. The facility provides the administrator and the Department with written notification at least 7 days prior to making the proposed changes.

2. The permittee and the Department shall attach each notice provided pursuant to 1.e

. above, to their respective copies of this permit.

3. Pursuant to the condition s above, the permittee is authorized to make Sec. 502(b)(10) changes, as

defined in ARM 17

. 8

. 12 01(30) , without a permit revision. For each such change, the written notification required under 1.e above, shall include a description of the change within the source, the date on which the change will occur, any change in emissions, and any permit term or condition that is no longer applicable as a result of the change.

4. The permittee may make a change not specifically addressed or prohibited by the permit term s and conditions without requiring a permit revision, provided the following conditions are met:

a. Each propose d change does not weaken the enforceability of any existing permit conditions;

b. The Department has not objected to such change;OP2953

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c. Each proposed cha nge meets all applicable requirements and does not violate any existing permit term or condition; and

d. The permittee provides contemporaneous written notice to the Department and the administrator of each change that is above the level for insignificant em ission units as defined in ARM 17.8.1201(22) and 17.8.1206(3), and the written notice describes each such change, including the date of the change, any change in emissions, pollutants emitted, and any applicable requirement that would apply as a result of the change.

5. The permit shield authorized by ARM 17.8.1214 shall not apply to changes made pursuant to ARM 17.8.1224(3) and (5), but is applicable to terms and conditions that allow for increases and decreases in emissions pursuant to ARM 17.8.1224(4).

K. Si gnificant Permit Modifications ARM 17.8, Subchapter 12, Operating Permit Program, §1227(1), (3)&(4)

1. The modification procedures set forth in 2 below, must be used for any application requesting a significant modification of this permit. Significant modif ications include the following:

a. Any permit modification that does not qualify as either a minor modification or as an administrative permit amendment;

b. Every significant change in existing permit monitoring terms or conditions;

c. Every relaxation of permit reporting or recordkeeping terms or conditions that limit the Department's ability to determine compliance with any applicable rule, consistent with the requirements of the rule; or

d. Any other change determined by the Department to be significant.

2. Signi ficant modifications shall meet all requirements of ARM Title 17, Chapter 8, including those for applications, public participation, and review by affected states and the administrator, as they apply to permit issuance and renewal, except that an applicati on for a significant permit modification need only address in detail those portions of the permit application that require revision, updating, supplementation, or deletion.

3. The permit shield provided for in ARM 17.8.1214 shall extend to significant modifi cations.

L. Reopening f

or Cause ARM 17.8, Subchapter 12, Operating Permit Program, §1228(1)&(2)

1. This permit may be reopened and revised under the following circumstances:

a. Additional applicable requirements under the FCAA become applicable to the facility w hen the permit has a remaining term of 3 or more years. Reopening and revision of the permit shall be completed not later than 18 months after promulgation of the applicable requirement. No reopening is required under ARM 17.8.1228(1)(a) if the effective date of the applicable requirement is later than the date on which the permit is due to expire, unless the original permit or any of its terms or conditions have been extended pursuant to ARM 17.8.1220(12) or 17.8.1221(2);

b. Additional requirements (includ ing excess emissions requirements) become applicable to an

affected source under the A cid R ain P rogram. Upon approval by the administrator, excess emissions offset plans shall be deemed to be incorporated into the permit;OP2953

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c. The Department or the administra tor determines that the permit contains a material mistake or that inaccurate statements were made in establishing the emission standards or other terms or conditions of the permit; or

d. The administrator or the Department determines that the permit must be revised or revoked

and reissued to ensure compliance with the applicable requirements.

M. Permit Expiration and Renewal ARM 17.8., Subchapter 12, Operating Permit Program, §1210(2)(g), §1220(11)&(12), and, §1205(2)(d)

1. This permit is issued for a fixed ter m of 5 years.

2. Renewal of this permit is subject to the same procedural requirements that apply to permit issuance, including those for application, content, public participation, and affected state and

administrator review.

3. Expiration of this permit term inates the permittee's right to operate unless a timely and administratively complete renewal application has been submitted consistent with ARM 17.8.1221 and 17.8.1205(2)(d). If a timely and administratively complete application has been

submitted all te rms and conditions of the permit, including the application shield, remain in effect after the permit expires until the permit renewal has been issued or denied.

4. For renewal, the permittee shall submit a complete air quality operating permit application t o the Department not later than 6 months prior to the expiration of this permit, unless otherwise specified. If necessary to ensure that the terms of the existing permit will not lapse before renewal, the Department may specify in writing to the permittee a longer time period for submission of the renewal application. Such written notification must be provided at least one year before the renewal application due date established in the existing permit.

N. Severability Clause ARM 17.8, Subchapter 12, Operati ng Permit Program, §1210 (2) (i)&(l)

1. The administrative appeal or subsequent judicial review of the issuance by the Department of an initial permit under this subchapter shall not impair in any manner the underlying applicability of all applicable requireme nts, and such requirements continue to apply as if a final permit decision had not been reached by the Department.

2. If any provision of a permit is found to be invalid, all valid parts that are severable from the invalid part remain in effect. If a provis ion of a permit is invalid in 1 or more of its applications, the provision remains in effect in all valid applications that are severable from the invalid applications.

O. Transfer or Assignment of Ownership ARM 17.8, Subchapter 12, Operating Permit Program, §1225(2)&(4)

1. If an administrative permit amendment involves a change in ownership or operational control, the applicant must include in its request to the Department a written agreement containing a specific date for the transfer of permit responsibility , coverage, and liability between the current and new permittee.

2. The permit shield provided for in ARM 17.8.1214 shall not extend to administrative permit

amendments.OP2953

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P. Emissions Trading, Marketable Permits, Economic Incentives ARM 17.8, Subchapter 12, Ope rating Permit Program, §1226(2)

Notwithstanding ARM 17.8.1226(1) and (7), minor air quality operating permit modification procedures may be used for permit modifications involving the use of economic incentives, marketable permits, emissions trading, and other similar approaches, to the extent that such minor permit modification procedures are explicitly provided for in the Montana S tate I mplementation P lan or in applicable requirements promulgated by the administrator.

Q. No Property Rights Conveyed

ARM 17. 8, Subchapter 12, Operating Permit Program, §1210(2)(d)

This permit does not convey any property rights of any sort, or any exclusive privilege.

R. Testing Requirements ARM 17.8, Subchapter 1, General Provisions, §105

The permittee shall comply with ARM 17 .8.105.

S. Source Testing Protocol ARM 17.8, Subchapter 1, General Provisions, §106

The permittee shall comply with ARM 17.8.106.

T. Malfunctions ARM 17.8, Subchapter 1, General Provisions §110

The permittee shall comply with ARM 17.8.110.

U. Circumvention

ARM 17.8, Subchapter 1, General Provisions §111

The permittee shall comply with ARM 17.8.111.

V. Motor Vehicles ARM 17.8, Subchapter 3, Emission Standards, §325

The permittee shall comply with ARM 17.8.325.

W. Annual Emissions Inventory ARM 17.8, Subchapter 5, Air Quality Permit Application, Operation and Open Burning Fees, §505 ( STATE ONLY )

The permittee shall supply the Department with annual production and other information for all emission units necessary to calculate actual or estimated actual amount of ai r pollutants emitted during each calendar year. Information shall be gathered on a calendar

- year basis and submitted to the Department by the date required in the emission inventory request, unless otherwise specified in this permit. Information shall be in the units required by the Department.

X. Open Burning ARM 17.8, Subchapter 6, Open Burning, §604, 605 and 606

The permittee shall comply with ARM 17.8.604, 605, and 606.OP2953

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Y. Montana Air Quality Permits (MAQP) ARM 17.8, Subchapter 7, Permit, Construction an d Operation of Air Contaminant Sources §745 and

764 (ARM 17.8.745(1) and 764(1)(b) are STATE ENFORCEABLE ONLY until approval by the EPA as part of the SIP)

1. Except as specified, no person shall construct, install, modify or use any air contaminant source

o r stack associated with any source without first obtaining a permit from the Department or Board. A permit is not required for those sources or stacks as specified by ARM 17.8.744(1)(a)

- (k).

2. The permittee shall comply with ARM 17.8.743, 744, 745, 748, an d 764.

3. ARM 17.8.745(1) specifies de minimis changes as construction or changed conditions of operation at a facility holding a Montana Air Quality Permit (MAQP) issued under Chapter 8 that does not increase the facility’s potential to emit by more than 15 tons per year of any pollutant, except (STATE ENFORCEABLE ONLY until approved by the EPA as part of the SIP):

a. Any construction or changed condition that would violate any condition in the facility’s existing MAQP or any applicable rule contained in Chapt er 8 is prohibited, except as provided in ARM 17.8.745(2);

b. Any construction or changed conditions of operation that would qualify as a major modification under Subchapters 8, 9 or 10 of Chapter 8;

c. Any construction or changed condition of operation that w ould affect the plume rise or dispersion characteristic of emissions that would cause or contribute to a violation of an ambient air quality standard or ambient air increment as defined in ARM 17.8.804;

d. Any construction or improvement project with a poten tial to emit more than 15 tons per year may not be artificially split into smaller projects to avoid Montana Air Quality Permitting; or

e. Emission reductions obtained through offsetting within a facility are not included when determining the potential emiss ion increase from construction or changed conditions of operation, unless such reductions are made federally enforceable.

4. Any facility making a de minimis change pursuant to ARM 17.8.745(1) shall notify the Department if the change would include a change in control equipment, stack height, stack diameter, stack gas temperature, source location or fuel specifications, or would result in an increase in source capacity above its permitted operation or the addition of a new emission unit.

The notice must be s ubmitted, in writing, 10 days prior to start up or use of the proposed de minimis change, or as soon as reasonably practicable in the event of an unanticipated circumstance causing the de minimis change, and must include the information requested in ARM

17 .8.745(1) (STATE ENFORCEABLE ONLY until approval by the EPA as part of the SIP).

Z. National Emission Standard for Asbestos 40 CFR Part 61, Subpart M

The permittee shall not conduct any asbestos abatement activities except in accordance with 40
CFR Part 61, Subpart M (National Emission Standard for Hazardous Air Pollutants for Asbestos).

AA. Asbestos ARM 17.74, Subchapter 3, General Provisions, and Subchapter 4, Fees

The permittee shall comply with ARM 17.74.301, et seq. and ARM 17.74.401, et seq. ( State only )OP2953

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BB. Stratospheric Ozone Protection

– Servicing of Motor Vehicle Air Condition ers 40 CFR Part 82, Subpart B

If the permittee performs a service on motor vehicles and this service involves ozone

- depleting substance/refrigerant in the motor vehicle air conditi oner (MVAC), the permittee is subject to all the applicable requirements as specified in 40 CFR Part 82, Subpart B.

CC. Stratospheric Ozone Protection

– Recycling and Emissions Reductions 40 CFR Part 82, Subpart F

The permittee shall comply with the standard s for recycling and emissions reduction in 40 CFR Part 82, Subpart F, except as provided for MVACs in Subpart B.

1. Persons opening appliances for maintenance, service, repair or disposal must comply with the required practice s pursuant to §82.156 ;

2. Equipmen t used during the maintenance, service, repair or disposal of appliances must comply with the standards for recycling and recovery equipment pursuant to §82.158 ;

3. Persons performing maintenance, service, repair or disposal of appliances must be certified b y an approved technical certification program pursuant to §82.161 ;

4. Persons disposing of small appliances, MVACs, and MVAC

- like (as defined at §82.152) appliances must comply with recordkeeping requirements pursuant to §82.166 ;

5. Persons owning commercial o r industrial process refrigeration equipment must comply with the leak repair requirements pursuant to §82.156 ; and,

6. Owners/operators of appliances normally containing 50 or more pounds of refrigerant must keep records of refrigerant purchased and added t o such appliances pursuant to §82.166.

DD. Emergency Episode Plan

The permittee shall comply with the requirements contained in Chapter 9.7 of the State of Montana Air Quality Control Implementation Plan.

Each major source emitting 100 tons per year located in a Priority I Air Quality Control Region shall submit to the Department a legally enforceable Emergency Episode Action Plan (EEAP) that details how the source will curtail emissions during an air pollutant emergency episode. The

industrial EEAP shall b e in accordance with the Department’s EEAP and shall be submitted according to a timetable developed by the Department

, following Priority I reclassification.

EE. Definitions

Terms not otherwise defined in this permit or in the Definitions and Abbreviations Appendix of this permit shall have the meaning assigned to them in the referenced regulation s

.OP2953

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# APPENDICESOP2953

- 06 A

- 1 Draft : 05/16/2011 Appendix A INSIGNIFICANT EMISSION S UNITS

Disclaimer: The information in this appendix is not State or Federally enforceable but is present ed to assist the permittee, the permitting authority, inspectors, and the public.

Pursuant to ARM 17.8.1201(22)(a), an insignificant emission unit means any activity or emissions unit located within a source that: (i) has a potential to emit less than 5 t ons per year of any regulated pollutant; (ii) has a potential to emit less than 500 pounds per year of lead; (iii) has a potential to emit less than 500 pounds per year of hazardous air pollutants listed pursuant to Section 7412 (b) of the FCAA; and (iv) i s not regulated by an applicable requirement, other than a generally applicable requirement that applies to all emission units subject to Subchapter 12.

List of Insignificant Activities:

The following table of insignificant sources and/or activities were provided by the permittee. Because there are no requirements to update such a list, the emissions units and/or activities may change from those specified in the table.

Emissions Unit ID Description

EU11 Process Tank Vents

EU12 Carbon dioxide System Sa fety Valves & VentsOP2953

- 06 B

- 1 Draft : 05/16/2011 Appendix B DEFINITIONS and ABBREVIATIONS

"Act" means the Clean Air Act, as amended, 42 U.S. 7401, et seq

.

"Administrative permit amendment" means an air quality operating permit revision that:

(a) c orrects typographical errors; (b) i denti fies a change in the name, address or phone number of any person identified in the air quality operating permit, or identifies a similar minor administrative change at the source; (c) r equires more frequent monitoring or reporting by PPLM ; (d) r equires changes in monitoring or reporting requirements that the Department deems to be no less stringent than current monitoring or reporting requirements; (e) a llows for a change in ownership or operational control of a source if the Department has

determined that no other cha nge in the air quality operating permit is necessary, consistent with ARM 17.8.1225; or (f) i ncorporates any other type of change which the Department has determined to be similar to those revisions set forth in (a)

- (e), above.

"Applicable requirement" means all of the following as they apply to emission s units in a source requiring an air quality operating permit (including requirements that have been promulgated or approved by the Department or the administrator through rule making at the time of issuance of the air quality operating permit, but have future

- effective compliance dates, provided that such requirements apply to sources covered under the operating permit):

(a) a ny standard, rule, or other requirement, including any requirement contained in a consent decree or judicial or administrative order entered into or issued by the Department, that is contained in the Montana state implementation plan approved or promulgated by the administrator through rule making under Title I of the FCAA; (b) a ny federally enfor ceable term, condition or other requirement of any Montana Air Quality

Permit issued by the Department under Subchapters 7, 8, 9 and 10 of this chapter, or pursuant to regulations approved or promulgated through rule making under Title I of the FCAA,

inclu ding parts C and D; (c) a ny standard or other requirement under Sec. 7411 of the FCAA, including Sec. 7411(d); (d) a ny standard or other requirement under Sec. 7412 of the FCAA, including any requirement concerning accident prevention under Sec. 7412(r)(7), but ex cluding the contents of any risk management plan required under Sec. 7412(r); (e) a ny standard or other requirement of the acid rain program under Title IV of the FCAA or regulations promulgated thereunder; (f) a ny requirements established pursuant to Sec. 7661c(b ) or Sec. 7414(a)(3) of the FCAA; (g) a ny standard or other requirement governing solid waste incineration, under Sec. 7429 of the
FCAA; (h) a ny standard or other requirement for consumer and commercial products, under Sec. 7511b(e) of the FCAA; (i) a ny standard or ot her requirement for tank vessels, under Sec. 7511b(f) of the FCAA; (j) a ny standard or other requirement of the regulations promulgated to protect stratospheric ozone under Title VI of the FCAA, unless the administrator determines that such requirements need n ot be contained in an air quality operating permit; (k) a ny national ambient air quality standard or increment or visibility requirement under part C of Title I of the FCAA, but only as it would apply to temporary sources permitted pursuant to Sec. 7661c(e) of the FCAA; or (l) a ny federally enforceable term or condition of any air quality open burning permit issued by the Department under S ubchapter 6.OP2953

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- 2 Draft : 05/16/2011

"Certified Visible Emissions Evaluator" means a person who has received certification as a qualified

observer in accordance with the requirements of 40 CFR Part 60, Appendix A Method 9 Section 3.

"Department" means the Montana Department of Environmental Quality.

"Emissions unit" means any part or activity of a stationary source that emits or has the potential to e mit any regulated air pollutant or any pollutant listed under Sec. 7412(b) of the FCAA. This term is not meant to alter or affect the definition of the term "unit" for purposes of Title IV of the FCAA.

"FCAA" means the Federal Clean Air Act, as amended.

"Federally enforceable" means all limitations and conditions which are enforceable by the administrator, including those requirements developed pursuant to 40 CFR Parts 60 and 61, requirements within the Montana state implementation plan, and any permit r equirement established pursuant to 40 CFR 52.21 or under regulations approved pursuant to 40 CFR 51, Subpart I, including operating permits issued under an EPA approved program that is incorporated into the Montana state implementation plan and expressly r equires adherence to any permit issued under such program.

"Fugitive emissions" means those emissions which could not reasonably pass through a stack, chimney, vent, or other functionally equivalent opening.

"General air quality operating permit" or "gen eral permit" means an air quality operating permit that meets the requirements of ARM 17.8.1222, covers multiple sources in a source category, and is issued in lieu of individual permits being issued to each source.

"Hazardous air pollutant" means any air pollutant listed as a hazardous air pollutant pursuant to Sec. 112(b) of the FCAA.

"Non

- federally enforceable requirement" means the following as they apply to emission s units in a source requiring an air quality operating permit:

(a) a ny standard, rule, o r other requirement, including any requirement contained in a consent decree, or judicial or administrative order entered into or issued by the Department, that is not contained in the Montana state implementation plan approved or promulgated by the

admini strator through rule making under Title I of the FCAA (b) a ny term, condition or other requirement contained in any Montana Air Quality Permit issued by the Department under Subchapters 7, 8, 9 and 10 of this chapter that is not federally

enforceable. (c) d oes not include any Montana ambient air quality standard contained in Subchapter 2 of this chapter.

"Permittee" means the owner or operator of any source subject to the permitting requirements of this subchapter, as provided in ARM 17.8.1204, that holds a valid air quality operating permit or has submitted a timely and complete permit application for issuance, renewal, amendment, or modification pursuant to this subchapter.

"Regulated air pollutant" means the following:

(a) n itrogen oxides or any volatile organic c ompounds; (b) a ny pollutant for which a national ambient air quality standard has been promulgated (c) a ny pollutant that is subject to any standard promulgated under Sec. 7411 of the FCAA; (d) a ny Class I or II substance subject to a standard promulgated under or est ablished by Title VI of the FCAA; orOP2953

- 06 B

- 3 Draft : 05/16/2011

(e) a ny pollutant subject to a standard or other requirement established or promulgated under Sec. 7412 of the FCAA, including but not limited to the following;

(i) a ny pollutant subject to requirements under Sec. 7412(j) of t he FCAA. If the administrator fails to promulgate a standard by the date established in Sec. 7412(e) of the FCAA, any pollutant for which a subject source would be major shall be considered to be regulated on the date 18 months after the applicable date e stablished in Sec. 7412(e) of the FCAA; (ii) a ny pollutant for which the requirements of Sec. 7412(g)(2) of the FCAA have been met but only with respect to the individual source subject to Sec. 7412(g)(2) requirement.

"Responsible official" means one of the fo llowing:

(a) For a corporation: a president, secretary, treasurer, or vice

- president of the corporation in charge of a principal business function, or any other person who performs similar policy or

decision

- making functions for the corporation, or a duly aut horized representative of such person if the representative is responsible for the overall operation of one or more manufacturing, production, or operating facilities applying for or subject to a permit and

either:

(i) t he facilities employ more than 250 pers ons or have gross annual sales or expenditures exceeding $25 million (in second quarter 1980 dollars); or (ii) t he delegation of authority to such representative is approved in advance by the Department.

(b) For a partnership or sole proprietorship: a general part ner or the proprietor respectively. (c) For a municipality, state, federal, or other public agency: either a principal executive officer or ranking elected official. For the purposes of this part, a principal executive officer of a federal agency includes the chief executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., a regional administrator of the environmental protection agency). (d) For affected sources: the designated representative in so far as actions, standards, requirements, or prohibitions under Title IV of the FCAA or the regulations promulgated thereunder are concerned, and the designated representative for any other purposes under this subchapter.OP2953

- 06 B

- 4 Draft : 05/16/2011

Abbreviations:

ARM Administrative Rul es of Montana

ASTM American Society of Testing Materials

BACT Best Available Control Technology

BDT bone dry tons

BTU British Thermal Unit

CFR Code of Federal Regulations

CO carbon monoxide DEQ Department of Environmental Quality

dscf dry standard cubic fo ot
dscfm dry standard cubic foot per minute

EEAP Emergency Episode Action Plan

EPA U.S. Environmental Protection Agency

EPA Method Test methods contained in 40 CFR 60, Appendix A

EU emissions unit

FCAA Federal Clean Air Act

gr grains

HAP hazardous air poll utant Hg mercury IEU insignificant emissions unit MAQP Montana Air Quality Permit

Mbdft thousand board feet

MEMS Mercury Emission Monitoring System

Method 5 40 CFR 60, Appendix A, Method 5

Method 9 40 CFR 60, Appendix A, Method 9

MMbdft million board feet

MMBTU million British Thermal Units

NOx oxides of nitrogen

NO 2 nitrogen dioxide

O 2 oxygen Pb lead

PM particulate matter

PM10 particulate matter less than 10 microns in size psi pounds per square inch

scf standard cubic feet

SIC Source Industrial Classific ation

SO 2 sulfur dioxide

SOx oxides of sulfur

TBtu trillion British Thermal Units

tpy tons per year
U.S.C. United States Code

VE visible emissions

VOC volatile organic compoundOP2953

- 06 C

- 1 Draft : 05/16/2011 Appendix C NOTIFICATION ADDRESSES

Compliance Notifications:

Montana Depart ment of Environmental Quality Permitting and Compliance Division Air Resources Management Bureau

P.O. Box 200901 Helena, MT 59620

- 0901

U nited States EPA Air Program Coordinator Region VIII, Montana Office

10 West 15 th Street, Suite 3200 Helena, MT 596 26

Permit Modifications:

Montana Department of Environmental Quality Permitting and Compliance Division Air Resources Management Bureau

P.O. Box 200901 Helena, MT 59620

- 0901

Office of Partnerships and Regulatory Assistance Air and Radiation Program

US EPA Region VIII 8P

- AR 1595 Wynkoop Street
Denver, CO 80202

- 1129OP2953

- 06 D

- 1 Draft : 05/16/2011 Appendix D AIR QUALITY INSPECTOR INFORMATION

Disclaimer: The information in this appendix is not State or Federally enforceable but is presented to

assist the permittee, permitting author ity, inspectors, and the public.

1. Direction to Plant:

Exit on 27 th Street Interchange from I

- 90 in Billings. Travel east paralleling Interstate 90 on the south side to Charlene Street and turn right. The plant gate is two blocks away on the right.

2. Saf ety Equipment Required:

The following safety guidelines were submitted by Montana Power Company. It is assumed that all safety equipment, and procedures will stay the same with the new owner, PPL Montana, LLC

.

.

GENERAL SAFETY GUIDELINES FOR THE J.E. CO RETTE PLANT

The following are the general safety rules for visitors at the J.E. Corette Plant. In all instances, visitors will be escorted by a company employee.

SAFETY GLASSES AND HARD HATS

All visitors are required to wear hard hats and safety glasse s in the plant area, except when in the offices, lunchrooms, or other protected areas.

PROPER CLOTHING

Clothing and shoes that are suitable for the particular type of work and existing weather conditions shall be worn. Dresses, or other loose clothing, are not recommended.

PROTECTIVE FOOTWEAR

Closed

- toe (no sandals), low

- heeled shoes shall be worn. High

- heel shoes with a heel less than 1 and

1⁄2 inch in diameter are not allowed.

SIGNS

Special instruction signs are for the safety of employees, visitors , and equipment. These instructions

shall be observed at all times.

- Caution signs (Black and Yellow)

Indicate a possible hazard against which proper precaution should be taken. Caution signs warn against potential hazards or caution against an unsafe p ractice.

- Danger Signs (Red, Black, and White)

Indicate immediate danger, and special precautions are necessary.

- Safety Instruction Signs (Green and White)

Provide general instructions and for suggestive information.OP2953

- 06 D

- 2 Draft : 05/16/2011

- Radiation Warning Signs (Reddish Pu rple and Yellow)

Warn of a radiation hazard only. Special precautions and equipment are necessary.

- Direction Signs (Black and White)

Ensure the safe and efficient flow of vehicles and pedestrian traffic.

- Fire Prevention and Location Signs (Red and Whi te)

Inform of the location and give special instructions for fire prevention. All "NO SMOKING" and other fire protection signs shall be observed.

Vision, Hearing and respiratory protection signs, where posted, shall be observed.

HORSEPLAY

Scuffling an d practical jokes are dangerous and are strictly forbidden.

SMOKING POLICY

Smoking or open flames shall not be permitted in areas where explosive atmospheres might be present or in any other area posted as a "NO SMOKING" area.

Absence of "NO SMOKING" si gns shall not excuse smoking in dangerous places.

SEAT BELTS

Where seat belts are provided in vehicles and equipment, they shall be used at all times while the vehicle or equipment is being operated.

DRUGS AND ALCOHOL

The use of intoxicating beverages on Company premises is strictly forbidden.

The use of any drug on Company property, except those prescribed by competent medical authority, is strictly forbidden by Company Policy.

3. Facility Plot Plan:

The facility plot plan was submitted to the Departme nt with the original operating permit application

submitted for Permit #OP2953

- 00. The facility plot plan is on file with the Department.OP2953

- 06 E

- 1 Draft : 05/16/2011 Appendix E OPACITY CEMS

Nothing in this appendix is intended to alter the requirement sin the Acid Rain Appendix

.

1. Pursuant to 40 CFR Part 75, the permittee shall calibrate, maintain, and operate continuous monitoring systems.

Except for system breakdowns, repairs, calibration checks, and zero and span adjustments required pursuant to 40 CFR 60.13(d), 40 CFR Part 7 5 and the accuracy audits required below, all continuous monitoring systems shall be in continuous operation.

The permittee shall conduct annual accuracy audits using a calibration jig and NBS

- traceable neutral density filters on the continuous monitoring system.

2. The permittee shall maintain records for a minimum of five years of the log sheets, computerized data, analysis, and calculations used to prepare the required reports.

3. The permittee shall submit reports to the Department containing the informati on required by 40 CFR 60.7 and as explained below, except that all reports shall only be required Semiannual for each six

month period.

a. The permittee shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the ope ration of an affect facility; any malfunction of the air pollution control equipment; or any periods during which the continuous monitoring system is inoperative.

b. The permittee shall submit an excess emissions and monitoring systems performance report

and /or a summary report form (see paragraph (c) below) to the Department. Written reports of reportable excess emissions greater than 40% (6

- minute average), 23% (1

- hour average), or 17% (24

- hour average) shall include the following information:

i. The magn itude of excess emissions, any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess emissions. The process operating time during the reporting period.

ii. Specific identification of each period of exce ss emissions that occurs during startups, shutdowns, and malfunctions of the affected facility. The nature and cause of any malfunction (if known), the corrective action taken or preventative measures adopted.

iii. The date and time identifying each period du ring which the continuous monitoring system was inoperative except for zero and span checks and the nature of the system repairs or adjustments.

iv. When no excess emissions have occurred or the continuous monitoring system(s) have not been inoperative, repai red, or adjusted, such information shall be stated in the report.

c. The summary report form shall contain the information and be in the format shown in Figure 1. The summary report form shall be submitted;

i. If the total duration of excess emissions for the reporting period is less than one percent (1%) of the total operating time for the reporting period and CEMS down time for the reporting period is less than five percent (5%) of the total operating time for the reporting period, only the summary report form shall be submitted and the excess emission report described in section (b) above need not be submitted unless requested.OP2953

- 06 E

- 2 Draft : 05/16/2011

ii. If the total duration of excess emissions for the reporting period is one percent (1%) or greater of the total operating time for the reporting period or the total CEMS downtime for the reporting period is five percent (5%) or greater of the total operating time for the reporting period, the summary report form and the excess emission report described in section (b) above shall both be submitted.

Figure 1

– Summary Report

– Excess Emission and Monitoring System Performance

The semiannual reports must be postmarked by the 30 th day after the end of each six

- month period. Pollutant: Reporting Period Dates: From ______ to ______

Emission Limitation:
Monitor Manufacturer and Model No.:
Date of Latest CEMS Certification or Audit:

Pr ocess Unit(s) Description: Total Source Operating Time in Reporting Period:

Emission Data Summary

1. Duration of excess emission in reporting period due to:

a. Startup/shutdown.

b. Control equipment problems.

c. Process problems.

d. Other known causes.

e. Unknown causes.

2. Total duration of excess emissions.

3. Total duration of excess emissions x 100 = % excess emissions Total Boiler Operating Time

CEMS Performance Summary

3. CEMS downtime in reporting period due to:

a. Monitor equipment malfunctions.

b. Non

- monitoring equipment malfunctions.

c. Quality assurance calibrations.

d. Other known causes.

e. Unknown causes.

4. Total CEMS Downtime when the boiler is operating (nearest quarter hour).

5. Total CEMS downtime when the boiler is operating x 100 = % downtime Total Boiler Operating Time

6. Total boiler operating time (nearest quarter hour).OP2953

- 06 F

- 1 Draft : 05/16/2011 Appendix F SO 2 C EMS

Nothing in this appendix is intended to alter the requirements in the Acid Rain Appendix.

1. Pursuant to 40 CFR Part 75, the permittee shall calibrate, maintain, and operate continuous monitoring systems. Heat input shall be determined as required in the 40 CFR Part 75, Appendix F and the NOx CEMS Appendix.

Except for system breakdowns, repairs, calibration checks, and zero and span adjustments required pursuant to 40 CFR Part 75, all continuous monitoring systems shall be in continuous operation.

2. Th e permittee shall maintain records for a minimum of five years of the log sheets, computerized data, analysis, and calculations used to prepare the required reports.

3. The permittee shall submit reports to the Department containing the information:

a. The per mittee shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; any malfunction of the air pollution control equipment; or any periods during which the continuous monitoring sy stem is inoperative.

b. The permittee shall submit an excess emissions and monitoring systems performance report and/or a summary report form (see paragraph (c) below) to the Department. Written reports of excess emissions greater than 2 lbs of SO 2 /mmBtu sh all include the following information:

i. The magnitude of excess emissions, any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess emissions. The process operating time during the reporting peri od.

ii. Any periods of time when the monitor range is exceeded. This shall include the date and time of commencement and completion of each time period the monitor is exceeding the range. The process operating time during the reporting period. These period s shall be considered periods of excess emissions.

iii. Specific identification of each period of excess emissions that occurs during startups, shutdowns, and malfunctions of the affected facility. The nature and cause of any malfunctions (if known), the corr ective action taken or preventative measures adopted.

iv. The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and the nature of the system repairs and adjustments.

v. When no ex cess emissions have occurred or the continuous monitoring system(s) have not been inoperative, repaired, or adjusted, such information shall be stated in the report.

c. The summary report form shall contain the information and be in the format shown in Figur e 1. The summary report form shall be submitted:

i. If the total duration of excess emissions for the reporting period is less than one percent (1%) of the total operating time for the reporting period and CEMS downtime for the reporting period is less t han five percent (5%) of the total operating time for the reporting period, only the summary report form shall be submitted and the excess emission report described in section (b) above need not be submitted unless requested.OP2953

- 06 F

- 2 Draft : 05/16/2011

ii. If the total duration of exce ss emissions for the reporting period is one percent (1%) or greater of the total operating time for the reporting period or the total CEMS downtime for the reporting period is five percent (5%) or greater of the total operating time for the reporting peri od, the summary report form and the excess emission report described in section (b) above shall both be submitted.

Figure 1

– Summary Report

– Gaseous Excess Emission and Monitoring System Performance

The s emiannual reports must be postmarked by the 30 th day after the end of each six

- month period. Pollutant: Reporting Period Dates: From ______ to ______

Emission Limitation:

Monitor Manufacturer and Model No.:
Date of Latest CEMS Certification or Audit: Process Unit(s) Description: Total Source Ope rating Time in Reporting Period:

Emission Data Summary

1. Duration of excess emission in reporting period due to:

f. Startup/shutdown.

g. Control equipment problems.

h. Process problems.

i. Other known causes. j. Unknown causes.

2. Total duration of excess emissions.

3. Tota l duration of excess emissions x 100 = % excess emissions Total Boiler Operating Time

CEMS Performance Summary

1. CEMS downtime in reporting period due to:

f. Monitor equipment malfunctions.

g. Non

- monitoring equipment malfunctions.

h. Quality assurance calibratio ns. i. Other known causes. j. Unknown causes.

2. Total CEMS Downtime when the boiler is operating (nearest quarter hour).

3. Total CEMS downtime when the boiler is operating x 100 = % downtime Total Boiler Operating Time

4. Total boiler operating time (nearest quarte r hour).OP2953

- 06 F

- 3 Draft : 05/16/2011

4. The permittee shall submit quarterly reports to the Department containing the following information for each month of the quarter:

a. Tons of emissions calculated as the sum of E h = K x C h x Q h , where E h = emission rate (lb/hr), K

= 1.66 x 10
- 7 (lb/scf)/ppm(SO 2 ), C h = measured pollutant concentration (ppm wet ), and Q h = measured stack gas flow rate (SCFH wet ); and

b. A summary report including the information identified in 40 CFR 75.64(a)(2) in writing, which

includes:

- Tons (rounded to the nearest tenth) of SO 2 emitted during the quarter and cumulative SO 2 emissions for calendar year.

The quarterly reports must be postmarked by the 30 th day after the end of the calend ar quarter.

5. The permittee shall submit copies of all RATAs performed to the Department in accordance with ARM 17.8.106, Source Testing Protocol.

6. The permittee shall submit copies of each monitoring plan revision, which results in the need to recertify th e CEMS.OP2953

- 06 G

- 1 Draft : 05/16/2011 Appendix G NOx CEMS

Nothing in this appendix is intended to alter the requirements in the Acid Rain Appendix.

1. Except for system breakdowns, repairs, calibration checks, and zero and span adjustments required pursuant to 40 CFR Part 75, all con tinuous monitoring systems shall be in continuous operation.

2. The permittee shall conduct a "Standard Practice for Ultimate Analysis of Coal and Coke", ASTM

D5291

- 92, at a minimum of once per year for each type of coal used.

3. The permittee shall determine the gross calorific value (GCV) of the fuels using ASTM D2015

- 91, "Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimeter" or other method as identified in 40 CFR Part 75, Appendix F, 3.3.6.2, at a minimum of

once per year for each type of coal used.

4. The permittee shall conduct a weekly fuel analysis using ASTM D4239

- 85 or other method approved by the Department.

5. The permittee shall maintain records for a minimum of five years of the log sheets, computerized

data , analysis, and calculations used to prepare the required reports.

6. The permittee shall submit reports to the Department containing the following information:

a. The permittee shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; any malfunction of the air pollution control equipment; or any periods during which the continuous monitoring system is inoperative.

b. The permittee shall submit a monitoring system performance report t o the Department in the format shown in Figure 1.OP2953

- 06 G

- 2 Draft : 05/16/2011 Figure 1

– Summary Report

– Gaseous Excess Emission and Monitoring System Performance

The reports shall only be required Semiannual for each six

- month period. The semiannual reports must be postmarked by the 30 th day after the end of each six

- month period.

7. The permittee shall submit quarterly reports to the Department containing the following information for each month of the quarter :

a. Monthly average coal analysis

b. Coal consumption Pollutant: Reporting Period Dates: From ______ to ______

Emission Limitation:

Monitor Manufacturer and Model No.:
Date of Latest CEMS Certification or Audit: Process Unit(s) Description: Total Source Operating Time in Reporting Period:

Emission Data Summary

1. Duration of excess emission in reporting period due to:

k. Startup/shutdown.

l. Control equipment problems.

m. Process problems.

n. Other known causes.

o. Unknown causes.

2. Total duration of excess emissions.

3. Total duration of excess emissions x 100 = % e xcess emissions Total Boiler Operating Time

CEMS Performance Summary

1. CEMS downtime in reporting period due to:

k. Monitor equipment malfunctions.

l. Non

- monitoring equipment malfunctions.

m. Quality assurance calibrations.

n. Other known causes.

o. Unknown causes.

2. To tal CEMS Downtime when the boiler is operating (nearest quarter hour).

3. Total CEMS downtime when the boiler is operating x 100 = % downtime Total Boiler Operating Time

4. Total boiler operating time (nearest quarter hour).OP2953

- 06 G

- 3 Draft : 05/16/2011

c. Other fuels combusted and the amount

d. Tons of emissions calculated as the sum of E h = K x C h x Q h , where E h = emission rate (lb/hr), K

= 1.19 x 10
- 7 (lb/scf)/ppm (NOx), C h = measured pollutant concentrati on (ppm wet ), and Q h = measured stack gas flow rate (SCFH wet ); and

e. A summary report including the information identified in 40 CFR 75.64(a)(3) through (5) in writing which includes:

i. Average NOx emission rate (lbs/mmBtu, rounded to the nearest hundred th) during the quarter and cumulative NOx emission rate for calendar year.

ii. Tons of CO 2 emitted during quarter and cumulative CO 2 for calendar year.

iii. Total heat input (mmBtu) for quarter and cumulative heat input for calendar year.

The quarterly reports mus t be postmarked by the 30 th day after the end of the calendar quarter.

8. The permittee shall submit copies of all RATAs performed to the Department in accordance with ARM 17.8.106, Source Testing Protocol.

9. The permittee shall submit copiers of each monitor ing plan revision, which results in the need to recertify the CEMS.OP2953

- 06 H

- 1 D raft : 05/16/2011 Appendix H ACID RAINOP2953

- 06 H

- 2 D raft : 05/16/2011OP2953

- 06 H

- 3 D raft : 05/16/2011OP2953

- 06 I

- 1 Draft : 05/16/2011 Appendix I SO 2 SIP

Although the hard copy of Appendix I has been removed from the permit, the contents of Appendix I,

SO 2 Control Plan remain as applic able requirements as stated in the Ti tle V Operating Permit OP2953

- 05

. To receive a hard copy of this appendix, please contact one of the following:

Montana Department of Environmental Quality Permitting and Compliance Division Air Resources Management B ureau 1520 E. Sixth Ave.

P.O. Box 200901 Helena, Montana 59620

- 0901 Bureau Phone # : (406) 444

- 3490

OR

Facility Contact Person

– Tom Olson

JE Corette Steam Electric Station

PPL Montana, LLC

P.O. Box 30495 Billings, MT 59107 Phone #: (406) 896

- 4704

OR

Technical Contact Person

– Steve Christian

JE Corette Steam Electric Station C/O Environmental Engineering Department

PPL Montana, LLC

P.O. Box 38 Colstrip, MT 59323 Phone #: (406) 748

- 5019OP2953

- 06 J

- 1 Draft : 05/16/2011 Appendix J OPERATION MODIFICATION PLAN

- REVISION 4

Although th e hard copy of Appendix J has been removed from the permit, the contents of Appendix J, Operation Modification Plan

– Revision 4 remain as applicable requirements as stated in the Tit le V Operating Permit #OP2953

- 05 . To receive a hard copy of this appendi x, please contact one of the following:

Montana Department of Environmental Quality Permitting and Compliance Division Air Resources Management Bureau

1520 E. Sixth Ave.

P.O. Box 200901 Helena, Montana 59620

- 0901 Bureau Phone #: (406) 444

- 3490

OR

Facil ity Contact Person

– Tom Olson

JE Corette Steam Electric Station
PPL Montana, LLC

P.O. Box 30495 Billings, MT 59107 Phone #: (406) 896

- 4704

OR

Technical Contact Person

– Steve Christian

JE Corette Steam Electric Station C/O Environmental Engineering Depa rtment

PPL Montana, LLC

P.O. Box 38 Colstrip, MT 59323 Phone #: (406) 748

- 5019OP2953

- 06 K

- 1 Draft : 05/16/2011 Appendix K Compliance Assurance Monitoring (CAM) Plan

Monitoring Approach for PM for PPLM JECSES

A. General Criteria

1. Performance Indicator Stack Opacity 2. Measurement Approach COMS 3. Indicator Range A particulate matter excursion is defined as when a

3

- hour Rolling average opacity is > 23%

B. Performance Criteria 1. Data Representativeness Opacity is measured in the stack

2. Veri fication of Operational Status An operator on a continuous basis monitors stack opacity in the Control Room, Data is recorded and stored in a Data Acquisition System (DAS). 3. QA/QC Practices & Criteria As per the PPLMT CEMS QA Plan: Daily

– COMS Calibration Drift Quarterly

– Opacity Accuracy Audit As per OM Plan:

Semi

- annual

– Reference Method 5 Test 4. Monitoring Frequency

Data Collection Procedures Averaging Period Opacity is measured on a continuous basis Opacit y data is collected & stored in the DAS Minute (6 minute, hourly, 3

- hour, and daily averages are calculated). 5. Exceedance/Excursion Reporting

Particulate Excursion 6

- minute average opacity excesses > 40% Hour Avg > 23% Daily avg. > 17% Reporting is on a quarterly basis

3

- hour rolling average opacity of > 23% are reported on a quarterly basis.

6. Plant Operational Assessment Parameters Flue Gas Exit Gas Temperature, <270o F
Total ESP Powers (KVA), Minimum 110

Coal Ash Co ntent (lbs/mmBtu), <13.5

Although the complete hard copy of Appendix K is not included in the permit, the contents of Appendix K, PPL’s CAM Plan remain as applicable requirements as stated in the Title V Operating Permit

#OP2953

- 0 5 . To receive a hard co py of this appendix, please contact one of the following:

The Department of Environmental Quality Permitting and Compliance Division Air Resources Management Bureau

1520 E. Sixth Ave.

P.O. Box 200901 Helena, Montana 59620

- 0901 Bureau Phone #: (406) 444

- 3490

OR

Facility Contact Person

– Tom Olson

JE Corette Steam Electric Station
PPL Montana, LLC

P.O. Box 30495 Billings, MT 59107 Phone #: (406) 896

- 4704OP2953

- 06 K

- 2 Draft : 05/16/2011 OR

Technical Contact Person

– Steve Christian

JE Corette Steam Electric Station

C/O Environmental E ngineering Department

PPL Montana, LLC

P.O. Box 38 Colstrip, MT 59323 Phone #: (406) 748

- 5019OP2953

- 06 L

- 1 Draft : 05/16/2011 Appendix L Mercury Emissions Monitoring System ( MEMS )

MEMS

a. PPLM shall install, calibrate, certify, maintain, and operate an MEMS to monitor and record t he rate of mercury emissions discharged into the atmosphere from all mercury emitting generating units (units) as defined in the Administrative Rules of Montana 17.8.740.

(1) The MEMS shall be comprised of equipment as required in 40 CFR 75.81(a) and defi ned in

40 CFR 72.2.

(2) The MEMS shall conform to all applicable requirements of 40 CFR Part 75.

(3) The MEMS data will be used to demonstrate compliance with the emission limitations

contained in Section III. H.16.

b. PPLM shall prepare, maintain and submit a written MEMS Monitoring Plan to the Department.

(1) The monitoring plan shall contain sufficient information on the MEMS and the use of data derived from these systems to demonstrate that all the gaseous mercury stack emissions from

each unit a re monitored and reported.

(2) Whenever PPLM makes a replacement, modification, or change in a MEMS or alternative monitoring system under 40 CFR 75 subpart E, including a change in the automated data acquisition and handling system (DAHS) or in the flue gas handling system, that affects information reported in the monitoring plan (e.g. a change to a serial number for a component of a monitoring system), then the owner or operator shall update the monitoring plan.

(3) If any monitoring plan information requires an update pursuant to Section b.(2), submission of the written monitoring plan update shall be completed prior to or concurrent with the submittal of the quarterly report required in c. below for the quarter in which the update is required.

(4) The initial submission of the Monitoring Plan to the Department shall include a copy of a written Quality Assurance/Quality Control (QA/QC) Plan as detailed in 40 CFR 75 Appendix B, Section 1. Subsequently, the QA/QC Plan need only be submitted to the Dep artment when it is substantially revised. Substantial revisions can include items such as changes in QA/QC processes resulting from rule changes, modifications in the frequency or timing of QA/QC procedures, or the addition/deletion of equipment or proced ures.

(5) The Monitoring Plan shall include, at a minimum, the following information:

(a) Facility summary including:

(i) A description of each mercury

- emitting generating unit at the facility.

(ii) Maximum and average loads (in megawatts (MW)) wit h fuels combusted and fuel flow rates at the maximum and average loads for each unit.

(iii) A description of each unit’s air pollution control equipment and a description of the physical characteristics of each unit’s stack.OP2953

- 06 L

- 2 Draft : 05/16/2011 (b) Mercury emission control summary including a description of control strategies, equipment, and design process rates.

(c) MEMS description, including:

(i) Identification and description of each monitoring component in the MEMS including manufacturer and model identifications; mon itoring method descriptions; and normal operating scale and units descriptions. Descriptions of stack flow, diluent gas, and moisture monitors (if used) in the system must be described in addition to the mercury monitor or monitors.

(ii) A description o f the normal operating process for each monitor including a description of all QA/QC checks.

(iii) A description of the methods that will be employed to verify and maintain the accuracy and precision of the MEMS calibration equipment.

(iv) Identification and description of the DAHS, including major hardware and software components, conversion formulas, constants, factors, averaging processes, and missing data substitution procedures.

(v) A description of all initial certification and ongoing recertificat ion tests and frequencies; as well as all accuracy auditing tests and frequencies.

(d) The Maximum Potential Concentration (MPC), Maximum Expected Concentration (MEC), span value, and range value as applicable and as defined in 40 CFR 75 Appendix
A, 2.1. 7.

(e) Examples of all data reports required in c. below.

c. PPLM shall submit written, Quarterly Mercury Monitoring Reports. The reports shall be received by the Department within 30 days following the end of each calendar quarter, and shall include, at a minimum, the following:

(1) Mercury emissions. The reports shall include:

(a) The monthly average lb/TBtu mercury emission rate for each month of the quarter;

(b) The 12

- month rolling average lb/TBtu emission rate for each month of the reporting quarter. The rolling 12

- month basis is an average of the last 12 individual calendar monthly averages, with each monthly average calculated at the end of each calendar month; and

(c) The total heat input to the boiler (in TBtu) for each 12

- month rolling period of the

quarter.

(2) Mercury excess emissions. The report shall describe the magnitude of excess mercury emissions experienced during the quarter, including:

(a) The date and time of commencement and completion of each period of excess emissions. Periods of excess emissions shall be defined as those emissions calculated on a rolling

12

- month basis which are greater than the limitation established in Section III.H.16

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(c) If no periods of excess mercury emissions were experienced during the quarter, the report

shall state that information.

(3) MEMS performance. The report shall describe:

(a) The number of ope rating hours that the MEMS was unavailable or not operating within quality assurance limits (monitor downtime) during the reporting quarter, broken down by the following categories:

• Monitor equipment malfunctions;

• Non

- Monitor equipment malfunctions;

• Quality assurance calibration;

• Other known causes; and

• Unknown causes.

(b) The percentage of unit operating time that the MEMS was unavailable or not operating within quality assurance limits (monitor downtime) during the reporting quarter. The percentage of monitor downtime in each calendar quarter shall be calculated according to the following formula:

where

MEMSDowntime% = Percentage of unit operating hours classified as MEMS

monitor do wntime during the reporting quarter.

MEMSDownHours = Total number of hours of MEMS monitor downtime during the reporting quarter.

OpHours = Total number of hours the unit operated during the reporting quarter.

(c) For any reporting quarter in which monitor downtime exceeds 10%, a description of each time period during which the MEMS was inoperative or operating in a manner defined in 40 CFR Part 75 as “out of control.” Each description must include the date, start and end
times, total downt ime (in hours), the reason for the system downtime, and any necessary corrective actions that were taken. In addition, the report shall describe the values used for any periods when missing data substitution was necessary as detailed in 40 CFR
75.30, et s eq

.

(4) The quarterly report shall include the results of any QA/QC audits, checks, or tests conducted to satisfy the requirements of 40 CFR Part 75 Appendices A, B or K.OP2953

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(5) Compliance certification. Each quarterly report shall contain a certificat ion statement signed by the facility’s responsible official based on reasonable inquiry of those persons with primary responsibility for ensuring that all of the unit's emissions are correctly and fully

monitored. The certification shall indicate:

(a) W hether the monitoring data submitted were recorded in accordance with the applicable requirements of 40 CFR Part 75 including the QA/QC procedures and specifications of that part and its appendices, and any such requirements, procedures and specifications of an applicable excepted or approved alternative monitoring method as represented in the approved Monitoring Plan.

(b) That for all hours where data are substituted in accordance with 40 CFR 75.38, the add

on mercury emission controls were operating wit hin the range of parameters listed in the quality

- assurance plan for the unit, and that the substitute values do not systematically underestimate mercury emissions.

(6) The format of each component of the quarterly report may be negotiated with the Depar tment’s representative to accommodate the capabilities and formats of the facility’s

DAHS.

(7) Each quarterly report must be received by the Department within 30 days following the end of each calendar reporting period (January

- March, April

- June, July

- Se ptember, and October

December).

(8) The electronic data reporting detailed in 40 CFR Part 75 shall not be required unless Montana is able to receive and process data in an electronic format.

d. PPLM shall maintain a file of all measurements and performa nce testing results from the MEMS; all MEMS performance evaluations; all MEMS or monitoring device calibration checks and audits; and records of all adjustments and maintenance performed on these systems or devices recorded in a permanent form suitable for inspection. The file shall be retained on site for at least 5 years following the date of such measurements and reports. PPLM shall make these records available for inspection by the Department and shall supply these records to the Department upon reque st.