AIR POLLUTION CONTROL OPERATION PERMIT REVISION
AIR POLLUTION CONTROL CONSTRUCTION PERMIT REVISION

EI FACILITY NO: 737009020 OPERATION PERMIT REVISION NO.: 737009020

- P1 3
737009020

- P16

CONSTRUCTION PERMIT REVISION NO.: 03

- RV

- 248

- R 6



### TYPE: Sig nificant Revision of Part

- 70 Source Operation Permit

Revision of Construction Permit 03

- RV

- 248

- R 5

In compliance with the provisions of Chapter 285, Wis. Stats., and Chapters NR 400 to NR 499, Wis. Adm. Code,

Name of Source: Wisconsin Public Service Corp oration

– Weston Plant

Street Address: 2501 Morrison Ave, Old Highway 51 Rothschild, Marathon County, Wisconsin

Responsible Official, & Title: Howard Giesler

, General Manager

- Weston

is authorized to operate an electricity generating facility in confor mity with the conditions herein.

This revised operation permit expires on August 2 7 , 2018 [s. 285.66(2)(a), Wis. Stats., and s. NR 407.09(1)(b)1., Wis. Adm. Code].

A Renewal application must be submitted at least 6 months, but not more than 18 months, pr ior to this expiration date. [ss. 285.66(3)(a), Wis. Stats. and NR 407.04(2), Wis. Adm. Code].

No permittee may continue operation of a source after the operation permit expires, unless the permittee submits a timely and complete application for renewal o f the permit. If the permittee submits a timely and complete application for renewal, the existing operation permit will not expire until the renewal application has been finally acted upon by DNR. [ss. 227.51(2) and 285.62(8)(b), Wis. Stats., and NR
407. 04(2), Wis. Adm. Code ]

This authorization requires compliance by the permit holder with the emission limitations, monitoring requirements and other terms and conditions set forth in Parts I, II, III, and IV hereof.

Dated at Eau Claire, Wisconsin Septembe r 23, 2014

STATE OF WISCONSIN
DEPARTMENT OF NATURAL RESOURCES 

### For the Secretary

By /s/ Jeffery Johnson Jeffery Johnson Air Program Supervisor, WCRFID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page i

PREAMBLE TO OPERATION PERMIT

An Asterisk (*) throughout this document denotes legal authority, li mitations and conditions which are not federally enforceable [Section NR 407.09(3)(b), Wis. Adm. Code.].

Historical Summary of Permits/Orders Issued to the Facility.

The construction permits, orders, etc. identified in the table below , are adopted, under s s. 285.65(3), Wis. Stats., and NR 407.09(2)(d), Wis. Adm. Code, by Permit 737009020

- P 1 6 which then becomes the primary
enforceable document:

Permit/Order Number Issuance Date Sources Covered & Description Permit Status

EPA

- 5

- 77

- A

- 4 1977 EPA Approval to construct B03 Included in 737009020

- P01
NS

- 78

- 37

- 39

- DNR 1978 DNR Approval to construct B03 Included in 737009020

- P01

AM

- 91

- 29 1991 Consent Order to burn PCB transformer oil Included in 737009020

- P01

AM

- 01

- 601 2001 Consent Order to limit SO2 emissions I ncluded in 737009020

- P01
00

- RLO

- 625

- EXM 7/17/2000 Exemption

- B03 (replace hot

- side ESP w/ cold side baghouse) Included in 737009020

- P01

00

- RLO

- 629

- EXM 10/18/2000 Exemption

– Temporary NG Rental Boiler
01

- MDW

- 701 2001 P51

- P58 Incorporated into 02

- JAJ

- 616
01

- RV

- 095 11/13/2001 B22 Incorporated into 02

- JAJ

- 616
02

- JAJ

- 616 7/19/2002 B22, P51

- P55 Revised by 02

- JAJ

- 616

- R1
02

- JAJ

- 616

- R1 2/26/2004 B22, P51

- P55 Incorporated into 04

- RV

- 128
02

- RLO

- RT1 12/11/2002 Research & Testing Exemption to burn partially burned coal (i.e. flyash) in B01, B02, B03
03

- RLO

- 194

- EXM 8/5/2003 Exemption

– to burn partially burned coal (i.e. flyash) in B01, B02, B03 Included in 737009020

- P01

04

- RV

- 128 8/27/2004 B22 Included in 04

- RV

- 128

- OP

04

- RV

- 128

- OP 10/15/2004 B22 Included in 737009020

- P01

737009020

- P01 10/15/2004 B01, B02, B03, B11, B12, B13, B21, B22,
P51

- P55, P23, P31

- P35, P36

- P39, F24,
T01 Revised by 737009020

- P02

737009020

- P02 3/30/2007 Revision to B11, B12, B13 Revised by 06

- SDD

- 102 (B03 only), Revised by 07

- SDD

- 3 01 (B01 & B02 only), Renewed by 737009020

- P10

03

- RV

- 248 10/19/2004 B04, B25, B27

- B29, P26, P30, P40, P41

- P50, P56, P61

- P66 Revised by 03

- RV

- 248

- R1 , Included in
737009020

- P10
03

- RV

- 248

- OP Not issued Same as 03

- RV

- 248 Noticed w/ 03

- RV

- 248

– Not Issued
03

- RV

- 248

- R1 3/28/2007 B04, F26 Revised by 03

- RV

- 248

- R2 ( for units
listed ) , Included in 737009020

- P10 03

- RV

- 248

- R2 6/1/2007 Modify B25, New B63 & B64 Revised by 03

- RV

- 248

- R3 ( for units
listed ) , Included in 737009020

- P10 03

- RV

- 248

- R3 1/18/2008 B04, B25 , B27, B28, P40, P44, P45, P49, P50, P56, B62, P65, P66 Revised by 03

- RV

- 248

- R4 ( for units
listed )
03

- RV

- 248

- R4 3/27/2009 B04, B25, B27

- B29, P26, P30, P40, P41

- P50, P56, P61

- P66 Revised by 10

- MHR

- 184 (F134 only), Revised by 03

- RV

- 248

- R5

, ( for units
listed )

06

- SDD

- 102 6/19/2007 Over fire air on B03 (expires 12/19/2009) Included in 737009020

- P 10
06

- SDD

- 193

- EXM 7/17/2006 NSR Exemption

– B03 Included in 737009020

- P10
737009020

- P03 Not issued Same as 06

- SDD

- 102 Noticed w/ 06

- SDD

- 102

– Not Issued

07

- SDD

- 301 7/22/2008 Overfire air on B01 & B02 (expires 7/10/2008) Included in 737009020

- P10
737009020

- P04 Not issued Same as 07

- SDD

- 301 Noticed w/ 07

- SDD

- 301

– Not Issued
737009020

- P05 Not issued Acid Rain NOX Ave. Plan
B01

- B03, B11

- B13, B21, B22, P23, F 24, P31

- P39, P61, P62, B67

- B70, F134 Not Issued

- Included in 737009020

- P10FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page ii

09

- JGB

- 089

- EXM 5/20/2009 Research & Testing Exemption

- B03
10

- MHR

- 184 4/20/2011 F71, F72, F72, F134 Included in 737009020

- P10
10

- MHR

- 184

- R1 6/15/2011 F71, F72, F72, F134 I ncluded in 737009020

- P10
11

- MHR

- 086

- EXM 6/30/2011 12 month Research & Testing Exemption

– use of sorbent enhancement additive for mercury control in B03, B04

12

- DCF

- 171 6/17/2013 B03, B71

- B73, P77, P78, P80, P81, T90

- T92 NOT INCLUDED IN 737009020

- P10 , Revision request 12

- DCF

- 171

- R1 submitted

737009020

- P12 Requested B03, B71

- B73, P77, P78, P80, P81, T90

- T92 (Project not completed as of issuance date of this permit) Not Issued

– Noticed with 12

- DCF

171

12

- DCF

- 171

- R1 Requested
03

- RV

- 248

- R5 8/2 7 /201 3 B04 Included in 737009020

- P10
737009020

- P10 8/2 7 /2013 Entire Facility Revised by 737009020

- P15
737009020

- P15 6/9/2014 Minor Revision to Incorporate MATS Affirmative Defense Language for B04 Revised by 737009020

- P16

03

- RV

- 248

- R7 Requested Removal of H g BACT Limit
03

- RV

- 248

- R8 Requested VE BACT Limit for B04
14

- XXX

- 041 Requested Dust collector at coal reclaim Incorporation of US EPA Consent Decree
737009020

- P14 Requested Incorporation of USEPA Consent Decree
03

- RV

- 248

- R6 9/2 3 /2014 Revision of 03

- RV

- 248

- R5 for B04 Issued with and adopted by
737009020

- P16
737009020

- P13 9/2 3 /2014 MATS Extension (B01, B02, B03) Issued with and adopted by
737009020

- P16
737009020

- P16 9/2 3 /2014 Significant Revision Active

STACK AND PROCESS INDEX: 1

MAIN BOILERS:

Stac k S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr. (Babcock and Wilcox Radiant type water tube boiler)

- Additional Fuels: Natural Gas, Distillate Fuel Oil, and Alternative Fuels. Controlled by ES P with SO3 Injection System

– Installed 1954

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000 mmBtu/hr. (Combustion Engineering Radiant type water tube boiler)

- Additional Fuels: Natural Gas, Distil late Fuel Oil, and Alternative Fuels. Controlled by ESP with SO3 Injection System

– Installed November 1960

Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48 mmBtu/hr. (Combustion Engineering Ra diant type water tube boiler)

- Additional Fuels: Natural Gas, Distillate Fuel Oil, and Alternative Fuels. Controlled by Baghouse

– Installed 12/1981

Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverize d Coal Boiler Rated at 5179.07 mmBtu/hr. Additional Fuels: Natural Gas. Controlled by Baghouse with FGD and SCR Systems

– Installed 7/1/2008

1 This perm it is based on information provided by the permittee in their permit application. The information describing the source contained in the Stack and Process Index is descriptive information and does not constitute enforceable conditions. However, the permit tee should be aware that a physical change or a change in the method of operation that may render this descriptive information obsolete or inaccurate may trigger requirements for the permittee to obtain additional permits or see k modification of this permi t pursuant to chs. NR 405, NR 406, and/or NR 407, Wis. Adm. Code, or change other applicable requirements presented in the permit application.FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page iii

COMBUSTION TURBINES:

Stack S11, Combustion Turbine B11

– Simple Cycle Natural Gas/Distillate Fuel Oil Com bustion Turbine W31

– Peaking Unit

- Rated at 395 mmBtu/hr

– Westinghouse W

- 251

- G

– Installed 1/1969

Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine W32A

– Peaking Unit

- Rated at 434 mmBtu/hr

– Turbo Pow er & Marine Systems TP4

- 2 DF Twin Pac Pratt & Whitney
Aircraft FT4C

- 1DF Gas Turbine

– Installed 6/1973

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine W32B

– Peaking Unit

- Rated at 434 mmBtu/hr

– Turbo Power & Marine Systems TP4

- 2 DF Twin Pac Pratt & Whitney
Aircraft FT4C

- 1DF Gas Turbine

– Installed 6/1973

AUXILIARY BOILERS:

Stack S21, Boiler B21

– Weston Units 1& 2 Auxiliary Boiler

– Natural Gas Fired Auxiliary Boiler Rated at 6.6
mmBtu/hr

– Johnston Bros. Inc. Catalog #16 Size 17 Type VDRE

- Installed 10/1953

Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

- Natural Gas Fired Auxiliary Boiler Rated at 46.2
mmBtu/hr

– Installed 11/2001

Stack S25, Boiler B25

– Weston Unit 4 Auxiliary He ating Boiler

- Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– Installed 7/23/2007

STATIONARY RECIPROCATING INTERNAL COMBUSTION ENGINES:

Stack S11AL (Lower) and S11AU (Upper), Process B11A

– B11

– Diesel Startup Engine with Dual Exhaust

– R ated at 5.8 mmBtu/hr (825 hp)

– Installed 1/1969

Stack S11B, Process B11B

- B11

– Emergency Black Start Diesel Engine

– Rated at 3.0 mmBtu/hr (435 hp)

– Installed 1/1969

Stack S60, Process B60

– Weston Unit 3 Diesel Fire Pump Engine

– Rated at 2.6 mmBtu/ hr (380 hp)

– Installed prior to 4/1981

Stack S27, Process B27

– Weston Unit 4 Diesel Booster Fire Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– Installed 9/20/2007

Stack S28, Process B28

– Weston Unit 4 Main Fire Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– Installed
12/19/2006

HEATERS:

Stack S63, Process B63

– Natural Gas Heater Station #1

- Rated at 0.73 mmBtu/hr

Stack S64, Process B64

– Natural Gas Heater Station #2

– Rated at 0.73 mmBtu/hr

Stack S67, Process B67

– North Natural Gas Station Heat er for Natural Gas Supply System

– Rated at 1.5
mmBtu/hr

– Installed 1960

Stack S68, Process B68

– South Natural Gas Station Heater for Natural Gas Supply System

– Rated at 1.5
mmBtu/hr

– Installed 1960

Stack S69, Process B69

– Rail Car Repair Station He ater

– Rated at 0.23 mmBtu/hr

- Installed 2005

Stack S70, Process B70

– Rail Car Repair Station Heater

– Rated at 0.23 mmBtu/hr

– Installed 2005FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page iv

COOLING TOWERS:

Stack S24, Process P24

– Weston Unit 3 Cooling Tower

– Installed 1978

Stack S26, Process P2 6

– Weston Unit 4 Cooling Tower

– Installed 9/24/2007

DUST COLLECTORS / BIN VENTS:

Stacks S31A, Process P31A, Control Device C31A

– Weston Unit 3 Coal Unloading (Dumper House)

– Rated at 3200 tph

– Enclosed Building with 2 Baghouses (C31A and C31B) and a third Junction House Baghouse (C31C)

– Installed 1978

Stacks S31B, Process P31B, Control Device C31B

– Weston Unit 3 Coal Unloading (Dumper House)

– Enclosed Building with 2 Baghouses (C31A and C31B) and a third Junction House Baghouse (C31C)

– Installed 1978

Stacks S31C, Process P31C, Control Device C31C

– Weston Unit 3 Junction House #1

– Enclosed Building with 2 Baghouses (C31A and C31B) and a third Junction House Baghouse (C31C)

– Installed 1978

Stacks S32A, Process P32A, Control Devices C32A

– West on Units 3 & 4 Crusher House

– Rated at 1200 tph

- Crusher house is enclosed and equipped with two baghouses (C32A and C32B), crusher house agglomerator is equipped with one baghouse (C32C), Coal Storage Silos and Cascade Conveyor are equipped with two ba ghouses (C32D and C32E)

– Installed 1978

Stacks S32B, Process P32B, Control Devices C32B

– Weston Units 3 & 4 Crusher House

– Enclosed

– Equipped with Baghouse

– Installed 1978

Stacks S32C, Process P32C, Control Devices C32C

– Weston Units 3 & 4 Crushe r House Agglomerator

– Enclosed

– Equipped with Baghouse

– Installed 1978

Stacks S32D, Process P32D, Control Device C32D

– Weston Unit 3 Coal Storage Silos & Cascade Conveyor

– Dust Collector A

– Enclosed

– Equipped with Baghouse

– Installed 1978

Stacks S32E, Process P32E, Control Devices C32E

– Weston Unit 3 Coal Storage Silos & Cascade Conveyor

– Dust Collector B

– Enclosed

– Equipped with Baghouse

– Installed 1978

Stack S34, Process P34, Control Device C34

– Weston Units 1&2 Transport Coal Conveyor #8

- Equipped with Baghouse

– Installed 1992

Stacks S35A, Process P35, Control Devices C35A

– Weston Units 1&2 Crusher House

- Equipped with Baghouse

– Installed/Last Modified 1995

Stacks S35B, Process P35, Control Devices C35B

– Weston Units 1&2 Conveyor C and Coal Bunker

- Equipped with Baghouse

– Installed/Last Modified 1995

Stacks S36A, Process P36A, Control Device C36A

– Weston Unit 3 Fly Ash Transfer & Handling

– Installed/Last
Modified 1995

Stacks S36B, Process P36B, Control Device C36B

– Weston Uni t 3 Fly Ash Silo

– Installed/Last Modified 1995

Stack S37A, Process P37A, Control Device C37A

– Weston Units 1 & 2 Fly Ash Transfer and Handling

– Installed 1962, Last Modified 1996

Stacks S37B, Process P37B, Control Device C37B

– Weston Units 1 & 2 Fly Ash Silo

– Installed 1962, Last
Modified 1996

Stack S39, Process P39, Control Device C39

– Weston Unit 3 Flyash Storage Building Controlled with Baghouse

– Installed 1993

Stack S30, Process P30, Control Device C30

– Weston Unit 4 System 1, New Reclaim Tun nel Exit #34

– Installed
2/14/2008FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page v

Stack S41, Process P41, Control Device C41

– Weston Unit 4 System 2, New Junction House 2, #31

– Installed
3/19/2008

Stack S42, Process P42, Control Device C42

– Weston Unit 4 System 3, New Junction House 3, #32

– Insta lled
3/19/2008

Stack S43, Process P43, Control Device C43

– Weston Unit 4 System 4, Unit 4 Silo Fill System, #7

- Installed
3/19/2008

Stack S44, Process P44, Control Device C44

– Weston Unit 4 System 1, Lime Storage Silo Bin Vent #22

- Installed 12/13/20 07

Stack S45, Process P45, Control Device C45

– Weston Unit 4 System 2, Lime Storage Silo Bin Vent #27

– Installed 12/17/2007

Stack S49, Process P49, Control Device C49

– Weston Unit 4 System 4, FGD Byproduct Recycle Bin Vent, #24

– Installed 2/11/2008

Stack S50, Process P50, Control Device C50

– Weston Unit 4 System 5, FGD Waste Silo Bin Vent, #20

- Installed
4/9/2008

Stack S65, Process P65, Control Device C65

– Weston Unit 4 PAC Storage Silo 4A

- Installed 1/24/2008

Stack S66, Process P66, Control De vice C66

– Weston Unit 4 PAC Storage Silo 4B

- Installed 1/24/2008

FUGITIVE EMISSIONS UNITS:

Process F33 and F56

– Coal Storage and Pile Maintenance

– Installed 1978

Process F38

– Bottom and Fly Ash Storage Site

– Installed 1970, Last Modified 1993

Sta ck S40, Process P40

– Conveyor 11 Telescopic Chute #29

– Installed 10/19/2007

Process F134

– Facility Haul Roads

WELDING SHOPS:

Stack S61, Process P61

– Machine Shop Welding

Stack S62, Process P62

– Rail Car Facility Welding Shop

FUGITIVE EMISSIONS U NITS

– ASH STORAGE AND PROCESSING:

Process F71

– Temporary Bottom Ash Storage Pile

– Installed or last modified 2011

Process F72

– Temporary Fly Ash Storage Pile

– Installed or last modified 2011

Process F73

– Bottom Ash Screening Plant

– Installed or la st modified 2011

Insignificant Emission Units:

Maintenance of Grounds, Equipment, and Buildings Fuel Oil Storage Tanks (including one 385,000 fuel oil storage tank, two 12, 500 gallon turbine oil tanks, one 28,700 gallon lube oil tank and one 14,800 gall on main lube oil tank, as well as tanks with capacities <10,000 gallons) Stockpiled Contaminated Soils Demineralization and Oxygen Scavenging of Water for Boilers,FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page vi

Purging of Natural Gas Lines Boiler, Turbine, and HVAC System Maintenance
Pollution Control Equipment Maintenance Internal Combustion Engines Used for Warehouse and Material Transport Fire Control Equipment
Janitorial Services
Office Activities Convenience Space Heating (< 5 million BTU/hour )
Tank T01

– 3 Fuel Oil Storage Tanks Gravel Parking Ar eas, Unpaved Roads, Tanks Associated with Insignificant Emissions, Lubricating Oil Systems, Plant Vacuum Systems, Cold Solvent Parts Cleaning, Non PCB Power Transformers, Coal Dust Suppressant Equipment and Application,
Incineration of non

- hazardous boiler chemical cleaners, Combustion of Oil Soaked Adsorbents (<3 TPY), Combustion of Petroleum Soaked Soil (<100 TPY), and Sulfur Trioxide Storage Tank. W31 Starting Diesel Engine (5.8 mmBtu/hr) S60, P60 Ws Pumphouse Diesel Fire Pump Loading of Coal for Off

- Sit e Shipment Two Convenience Space Heaters (less than 5 mmBtu/hr) Transfer of Fly Ash via Rail Cars
Two Small Convenience Water Heaters Process Safety Ventilation
Portable Vacuum Trucks Intermittent Onsite Trucking of Coal Maintenance Dredging and Dewatering of Bottom Ash Settling Pond Handling and Reclaim of Small Amounts of Alternative Solid Fuels
Fill for Erosion and Roads

Permit Shield: Unless precluded by the Administrator of the US EPA, compliance with all emission limitations in this operation permit is considered to be compliance with all emission limitations established under ss. 285.01 to 285.87, Wis. Stats., and emission limitations under the federal clean air act, that are applicable to the source if the permit includes the applicable limitation o r if the Department determines that the emission limitations do not apply.

On January 4, 2013, the U.S. Department of Justice (U.S. DOJ) lodged a proposed consent decree with the U.S.
District Court for the Eastern District of Wisconsin in the lawsuit ent itled U.S. v. Wisconsin Public Service Corporation, Civ. No. 13

- C

- 10 (E.D. Wis.). The final consent decree was filed on March 7, 2013. The consent
decree sets out conditions on the WPSC

– Weston Generation Station, including emission limitations, control requirements, and monitoring requirements for various pollutants. The conditions from the final consent decree will be incorporated into the Title V operation permit according to the schedule required by the final decree.

The final terms of this consent decree will affect, and may differ from, many of the current conditions in this permit. Operation in compliance with the terms of this operation permit does not shield the permitee from also complying
with the terms of the final consent decree.

The follow ing emission limitations were reviewed in the analysis and preliminary determination and were determined not to apply to this stationary source:

Processes F33 and F38: Not subject to particulate matter emission limitations of s. NR 415.05, Wis. Adm. Code, because units are fugitive dust sources.

US EPA did not identify combustion turbines B11, B12, and B13 as affected units under the Acid Rain Program, as such the requirements of ch. NR 409, Wis. Adm. Code would not apply to combustion turbines B11, B12, a nd B13

.FID 737009020; Permi t No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Final Permit Preamble

- page vii

Section NR 440.207, Wis. Adm. Code (40 CFR, Part 60, Subpart DC) does not apply to small industrial

commercial

- institutional steam generating units at the facility with a maximum design heat input capacity of less than 2.9 megawatts (10 million Btu /hr)

.

Section NR 440.285, Wis. Adm. Code (40 CFR, Part 60, Subpart KB) does not apply to each volatile organic liquid storage vessel (including petroleum liquid storage vessels) with a capacity greater than or equal to 151 m 3 storing a liquid with a maximu m true vapor pressure less than 3.5 kilopascals (kPa). Section NR 440.285, Wis. Adm. Code (40 CFR, Part 60, Subpart KB) does not apply to each volatile organic liquid storage vessel (including petroleum liquid storage vessels) with a capacity greater than or equal to 75 m 3 but less than 151 m 3 storing a liquid with a maximum true vapor pressure less than 15.0 kilopascals (kPa)

.

* Emissions of hazardous pollutants from the combustion of group 1 virgin fossil fuels are exempt from the requirements of s. NR 445.07(1), Wis. Adm. Code, pursuant to s. NR 445.07(5)(a), Wis. Adm. Code. Emissions of hazardous pollutants from the combustion of group 2 virgin fossil fuels vented from a stack that has downwash minimization stack height are exempt from the requirement s of s. NR 445.07(1), Wis. Adm. Code, pursuant to s. NR 445.07(5)(b), Wis. Adm. Code

.

Part I

— The headings for the areas in the permit are defined below. The legal authority for these limitations or methods follows them in [brackets].

Pollutant

– This are a will note which pollutant is being regulated by the permit.

Limitations

– This area will list all applicable emission limitations that apply to the source, including case

- by

case limitations such as Latest Available Control Techniques (LACT), Best Avail able Control Technology (BACT), or Lowest Achievable Emission Rate (LAER). It will also list any voluntary restrictions on hours of operation, raw material use, or production rate requested by the permittee to limit potential to emit.

Compliance Demonstrat ion

– The compliance demonstration methods outlined in this area may be used to demonstrate compliance with the associated emission limit or work practice standard listed under the corresponding Limitations column. The compliance demonstration area contain s limits on parameters or other mechanisms that will be monitored periodically to ensure compliance with the limitations. The requirement to test as well as initial and periodic test schedules, if testing is required, will be stated here. Notwithstanding t he compliance determination methods which the owner or operator of a sources is authorized to use under ch. NR 439, Wis. Adm. Code, the Department may use any relevant information or appropriate method to determine a source’s compliance with applicable emi ssion limitations.

Reference Test Methods, Recordkeeping, and Monitoring Requirements

– Specific US EPA Reference test methods or other approved test methods will be contained in this area and are the methods that must be used whenever testing is required. A reference test method will be listed even if no testing is immediately required. Also included in this area are any recordkeeping requirements and their frequency and reporting requirements. Accuracy of monitoring equipment shall meet, at a minimum, the requirements of s. NR 439.055(3) and (4), Wis. Adm. Code, as specified in Part II of this permit.

Condition Type

– This area will specify other conditions that are applicable to the entire facility that may not be tied to one specific pollutant.

Condition s

– Specific conditions usually applicable to the entire facility or compliance requirements.

Acid Rain Portion of Operation Permit

– This facility is an affected source under Phase I and Phase II of the Acid Rain Provisions (Title IV) of the Clean Air Act . Units 1

– 3 (boilers B01

- B03) are Phase I and II units. The boilers are not considered new units under the acid rain requirements and the permittee has not submitted a repowering plan. To comply with Phase II Acid Rain requirements, the permittee will hold allowances in accordance with 40 CFR 72.9(c)(1) and use nitrogen oxide averaging. The acid rain requirements are included in the Acid Rain Portion of the Operation Permit included at the end of Part I of the permit.

PART II

— This section contains t he general limitations that the permittee must abide by. These requirements are standard for most sources of air pollutants so they are included in this section with every permit.

PART III

- This section contains the requirements for 40 CFR 97 Clean Air In terstate Rule (CAIR) that the permittee must abide by.

PART IV

- This section contains the requirements of 40 CFR 64 Compliance Assurance Monitoring (CAM) that the permittee must abide by.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 1

PART I
SPECIFIC PERMITS CONDITIONS

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr. (Babcock and Wilcox Radiant type water tube boiler)

– Installed 1954 Additional Fuels: Natural Gas, Distillate Fuel Oil, and Alternative Fuels Controlled by: ESP with SO3 Injection System

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000 mmBtu/hr. (Combustion Engineering Radiant type water tube boiler)

– Installed November 1960 Additional Fuels: Natural Gas, Di stillate Fuel Oil, and Alternative Fuels Controlled by: ESP with SO3 Injection System

Pollutant: 1. Particulate Matter Emissions

a. Limitations: (1) (a) Boiler B01: ( i ) Emissions from boiler B01 ma y not exceed 0.10 pounds/mmBtu heat input

. (ii) Emissions from boiler B01 may not exceed 85.8 pounds per hour.

(b) Boiler B02: (i) Emissions from boiler B02 may not exceed 0.10 pounds/mmBtu heat input

. (ii) Emissions from boiler B02 may not exceed 100 pounds per hour. [s. NR 415.06(2)(c), Wis. Adm . Code and 07

- SDD

- 301]

(2) See also condition I.A.7.a.(1). b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire: (a) the following primary and backup fuels in boilers B01 and B02: (i) coal; (ii) natural gas; and (iii) distillate fuel oil. (b) the following alternate fuels 2 in boilers B01 and B02: (i) ash (partially burned coal); (ii) wood waste; (iii) waste water sludge; ( i v) refuse derived fuel; and (v) tire derived fuel. (c) the fol lowing alternate fuels 3 in boiler B02: (i) transformer oil. [s. NR 407.09(4)(a), Wis. Adm. Code, ss. 285.65(3) and 285.63(1)(a), Wis. Stats. and 07

- SDD

- 301]

(2) (a) The permittee shall operate an electrostatic precipitator
whenever solid fuel is fired i n boiler B01 in a manner that controls particulate matter emissions from boiler B01 so that the emission limitations in condition I.A.1.a.(1) are met. (b) The permittee shall operate an electrostatic precipitator
whenever solid fuel is fired in boiler B 02 in a manner that controls particulate matter emissions from boiler B02 so that the emission limitations in condition I.A.1.a.(1) are met. [ss. NR 407.09(4)(a) and NR 415.03, Wis. Adm. Code, s. 285.65(3),
Wis. Stats. and 07

- SDD

- 301] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, 5I, or 17, including backhalf (Method 202)

, or any other method approved by the Department in wr iting. [s. NR 439.06(1), and (1m), Wis. Adm. Code]

(2) The permittee shall retain copies of the results of the compliance emission tests specified in I.A.1.b.(4). [s. NR 439.04(1)(a), Wis. Adm. Code and 07

- SDD

301]

(3) The permittee shall keep records of the type and amount of fuel burned in each boiler on a monthly basis and the hours of operation of each ESP during the month. [s. NR 439.04(1)(d), Wis. Adm. Code and 07

- SDD

- 301]

2 See section I.A.6. of this permit for restrictions on the amount of alternate fuels that can be fired.

3 Ibid . (Same as previous footnote.)FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 2

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coa l Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 1. Particulate Matter Emissions

- {CONTINUED}

b . Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: 

### (3 ) The permittee shall operate an alarm system on each ESP to alert the operator if a section of the ESP is out of service. If an alarm occurs, the permittee shall take

approp riate investigative and corrective action. [ s . NR 407.09(4)(a) 1. and 3.b., Wis. Adm. Code]

(4) The permittee shall perform compliance emission testing of particulate matter emissions from each boiler to demonstrate compliance with the applicable particul ate matter emission limit in I.A.1.a.(1), as
follows: (a) Testing shall be conducted every 24 months as long as the permit remains valid. (b) Each biennial test of particulate matter emissions shall be performed within 90 days of the anniversary
date of th e issuance of this permit or within 90 days of an alternate date specified by the Department in writing. (c) The permittee may request and the Department may approve a waiver from the required biennial testing provided the results of the most recently comp leted biennial test demonstrate that particulate matter emissions are 50 percent or less of the applicable limitation in condition I.A.1.a.(1) (d) The permittee shall repeat the compliance emissions test while firing wood waste, transformer oil, waste

wate r sludge, refuse waste, and/or tire derived fuels within 60 days of first firing wood waste, transformer
oil , waste water sludge, refuse waste, and/or tire derived fuels. This testing shall be completed prior to firing the alternate fuel(s) on a regular b asis. (e) The tests shall be conducted in accordance with
I.XXX.3.a. [ss. NR 439.07, NR 439.075(2)(a) and NR 439.075(3)(b), Wis. Adm. Code and 07

- SDD

- 301]

(5) The permittee shall monitor the following operational parameters for each electrostatic precipit ator (ESP): (a) the primary voltage in volts; (b) the secondary voltage in volts; (c) the primary current in amps; (d) the secondary current in amps; and (e) the sparking rate in sparks per minute. [s. NR 439.055(1)(c), Wis. Adm. Code and 07

- SDD

301]

(6) The permittee shall use the parameters identified in I.A.1.b.(5) to evaluate the performance of each ESPs and perform maintenance as needed to maintain each ESPs in good working order. [s. NR 407.09(4)(a)3.b.,
Wis. Adm. Code and 07

- SDD

- 301] (4) (a) The permittee shall record the parameters listed in I.A.1.b.(5) once every 8 hours of operation or once per day, whichever yields the greater number of measurements. [s. NR 439.055(2)(b), Wis. Adm. Code and 07

- SDD

- 301] (b) The permittee shall keep records of any maintenance performed on the ESPs as a result of the evaluations performed as required by I.A.1.b.(6). [s. NR 439.04(1)(d), Wis. Adm. Code] (c) The permittee shall maintain records of any investigative and
corrective action taken as a result of an al arm indicating visible emissions exceeded the respective opacity specified in conditions I.A.1.b.( 11 )(b) and (c ) for each boiler

, as required by condition I.A.1.b.( 11 )( f ), that include: (i) date and time of the alarm; (ii) a description of the investigativ e actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code] (d) The permittee shall maintain records of any investigative and corrective action taken as a result of an alarm indicating an ESP
section is out of se rvice, as required by I.A.1.b.(3), that include: (i) date and time of the alarm; (ii) a description of the investigative actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code]

(5) The permittee shall keep reco rds of: (a) the date, time, and initials of the person performing the inspections required by I.A.1.b.(7); (b) a list of the items inspected; and (c) any maintenance, repairs or adjustments performed as a result of these inspections. (d) the operating hou rs of each boiler since the last inspection ; and (e) the date, time and initials of the person performing the calibrations required by I.A.1.b.(8). [s. NR 439.04(1)(d), Wis. Adm. Code and 07

- SDD

- 301]

(6) The permittee shall keep records of: (a) the date, time, and initials of the person performing the inspections required by I.A.1.b.(9); (b) a list of the items inspected; (c) any maintenance, repairs or adjustments performed as a result of these inspections; [s. NR 439.04(1)(d), Wis. Adm. Code and 07

- SDD

- 3 01]

(7) The permittee shall keep records of the amount in tons, of ash
received for combustion from facilities FID #s 744009100 and 737009570 monthly and in a calendar year. [s. NR 439.04(1)(d),
Wis. Adm. Code and 07

- SDD

- 301]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 3

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 1. P articulate Matter Emissions

- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) The permittee shall perform periodic internal inspections of each electrostatic precipitator to ensure that the control equipme nt is operating properly. The time interval between inspections may not exceed 13,140 operating hours, unless an alternative schedule is approved by the department in writing. [s. NR 407.09(4)(a)3.b., Wis. Adm.
Code and 07

- SDD

- 301]

(8) The permittee sh all calibrate instruments used for measuring the electrostatic precipitator operational parameters identified in I.A.1.b.(5) once every 13,140 hours of operation, unless an alternative schedule is approved by the department in writing. [s. NR 407.09(4)(a) 3.b., Wis. Adm. Code]

(9) The permittee shall perform periodic inspections of each boiler to ensure optimum boiler performance using a qualified inspector. Specific items that should be inspected include, but are not limited to, firebox, boiler tubes, re fractory, burner conditions, boiler backpass, boiler cleanliness and overall boiler condition. The time interval between inspections may not exceed 13,140 operating hours unless the department approves a request for an extension in writing. [s. NR 407.09 (4)(a)3.b., Wis. Adm. Code and 07

- SDD

- 301]

(10) Partially burned coal requirements : (a) The amount of Rhinelander Paper Mill (RPM) (fid # 744008100) partially burned coal that is received for combustion in boilers B01, B02, and B03, in any calendar year may not exceed 10,400 tons. (b) The amount of ash from Wausau

- Mosinee Mill (fid # 737009570) received for combustion in B01, B02 and B03 in a calendar year may not exceed 10,000 tons. 4 (c) The permittee shall obtain written approval from the department , prior to burning partially burned coal from other sources. (d) The permittee shall perform an annual elemental metal analysis of the partially burned coal from facilities fid#s 744008100 and 737009570 (or other ash as approved under I.A.1.b.(9)(c)) prior to or within 90 days after the fuel is first burned in any of the boilers, in each calendar year. Elemental metal analysis is required once in any calendar year that partially burned coal is fired in any of the boilers. [ss. 285.65(3) and (10), Stats. an d s. NR 407.09(4)(a)3.b., Wis. Adm. Code and 07

- SDD

301] (8) The permittee shall keep records to demonstrate compliance with I.A.1.b.(10)(d). [s. NR 439.04(1)(d), Wis. Adm. Code]

4 The company names associated with these fid#s may be changed and still maintain compliance with this condition.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 4

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fir ed Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 1. Particulate Matter Emissions

- {CONTINUED}

b. Co mpliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (11) Compliance Assurance Monitoring (CAM) Requirements: Boilers B01 and B02 are each pollutant

- specific emissions units for particulate matter emissions and are each subject to the CAM requirements of Part 64 CFR. As such each boiler is subject to the CAM requirements in Part IV and section I.XXX.9. of this permit, and
as follows: (a) Whenever either boiler is operating, the permittee shall monitor opacity as an indicator of ESP p erformance using a continuous opacity monitoring system (COMS) that meets the requirements I.A.2.b.(2) and I.A.2.c.(2); (b) The indicator range for visible emissions from B01 is 20% opacity or less based

on a one

- hour average; 5 (c) The indicator range fo r visible emissions from B02 is 10.5% or less based on a

one

- hour average; 6 (d) The permittee shall use the data collected by the COMS to calculate one

- hour average opacities for each boiler; (e) An excursion is a one

- hour average opacity reading that ex ceeds the indicator range in conditions I.A.1.b.(11)(b) or (c) for boilers B01 and B02, respectively; (f) The permittee shall operate an alarm system to notify the operator if visible emissions exceed the respective opacity specified in conditions I.A.1.b .(11)(b) and (c) for each boiler. If an alarm occurs, the permittee shall take appropriate investigative and corrective action. (g) The quality improvement plan (QIP) threshold is reached when excursions occur for more than 5% of an individual boiler’s op erating time in a six month reporting period; (h) The permittee shall operate the COMS in accordance with 40 CFR ss. 64.7 and 64.8 as detailed in conditions I.XXX.a.(2) and (4). [s. 285.65(13), Wis. Stats., ss. NR 407.09(4)(a)1. and s. NR 439.0 5 5(5), Wis. Adm. Code, and 40 CFR ss. 64.2, 64.3, 64.6, 64.7, and 64.8]

5 The permittee established a correlation between particulate matter emissions and opacity using compliance e mission test data.
This correlation is described in the MONITORING APPROACH JUSTIFICATION FOR UN ITS 1 AND 2 included in the CAM plan in Part IV of this permit. Based on this correlation, the indicator for boiler B01 is 20 percent or less.

6 The permittee established a correlation between particulate matter emissions and opacity using compliance emission test data.
This correlation is described in the MONITORING APPROACH JUSTIFICATION FOR UN ITS 1 AND 2 included in the CAM plan in Part IV of this permit. Based on this correlation, the indicator for boiler B02 is 10.52 percent or less.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 5

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations: (1) 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 tim es per day. 7 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code and 07

- SDD

- 301] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) To minimize visible emissions, the permittee shall start

- up and shut

down each boiler acc ording to the following: 8
(a) Normal Start

- up Sequence: (i) Place ESP in service and ensure continuous opacity monitor is operational, or in accordance with an alternative monitoring method approved in writing by the Department. (ii) Start the draft fan (s) (iii) Preheat boiler firing natural gas and/or distillate fuel oil as a startup
fuel. (iv) Introduce coal to the combustion chamber while continuing to operate the startup fuel as the coal begins to ignite. 9
(v) Continue the use of the startup fue l until stable fire is achieved. (vi) Normal start

- up is complete upon achieving a stable fire and B01 reaches a minimum generator load of 12 MW or B02 reaches a minimum generator load of 18 MW. 10

(b) Normal Shut

- down Sequence: (i) Reduce generator load to 12 MW for B01 or 18 MW for B02 with the intent of removing the unit from service. (ii) Discontinue coal introduction to boiler and/or cease fuel firing. (iii) Discontinue operation of the draft fans. (iv) Discontinue operation of ESP. (v) Normal sh ut

- down is complete after item (iv) or a start

- up of the boiler

commences. [s. NR 407.09(4)(a), Wis. Adm. Code and 07

- SDD

- 301]

(2) The permittee shall calibrate, maintain and operate a continuous monitoring system for the measurement of opacity from each stack in accordance with the performance specifications in 40 CFR Part 75, Appendices A to I and Performance Specification 1 in 40 CFR Part 60, Appendix B. [ss. NR 439.09(1), and NR 439.095(1)(f) and (6), Wis. Adm.
Code and 07

- SDD

- 301] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or any other method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The continuous opacity monitors required by I.A.2.b.(2) shall complete one cycle of sampling and analyzing for each successive
10

- second period and one cycle of data recording for each successive 6

- minute period, at a minimum. [s. NR 439.09(9)(a), Wis. Adm.
Code and 07

- SDD

- 301]

(3) The permittee shall submit quarterly excess emission reports to the Department by January 30, April 30, July 30, and October 30 for the previous calendar quarter, in accordance with I.XXX.2.a. [s. NR 439.09(10), Wis. Adm.
Code and 07

- SDD

- 301 ]

(4) Unless otherwise specified by the Department, periods of excess visible emissions shall be any 6

- minute period during which the average opacity exceeds the limitation in I.A.2.a.(1). [s. NR 439.09(10)(b),
Wis. Adm. Code and 07

- SDD

- 301]

7 When combustion equipment is being cleaned or a new fire started and opacity exceeds 20%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one day.
8 The normal start

- up and shut

- down sequences listed are a sum mary of steps to minimize visible emissions during start

- up and shut

- down operations. The normal start

- up sequence listed here does not define the period of “new fire starting” allowed in the exceptions to the visible emission limitation in condition I.A. 2.a.(1)(a).

9 B02 is capable of operating at full load on natural gas.

10 All values are gross MW. The normal start

- up sequence from first coal fire to stable coal fire is generally less than 12
hours in duration.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 6

A. Stac k S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pol lutant: 3. Nitrogen Oxides

a. Limitations: ( 1) (a) Emissions from boiler B01 may not exceed 1079.5 pounds per hour. 11 (b) Emissions from boiler B02 may not exceed 1258.0 pounds per hour. [ss. 285.63(1)(b) and 285.65(3) and (7), Wis. Stats. and 07

- SDD

- 301]

(2) Acid Rain Requirements: Boilers B01 and B02 are Affected Acid Rain Units subject to Acid Rain Requirements. As such the permittee shall comply with the applicable requirements included in the Acid Rain Portion of the Operation Permit in
Section I.ZZZ.

(3) Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR) Requirements: Boilers B01 and B02 are subject to
the NOx

- Annual and the NOx

– Ozone Season CAIR requirements. As such, the permittee shall comply with the CAIR requi rements as outlined in section I.XXX.8. and in the CAIR Permit Application (for sources subject to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit
and 40 CFR 97.1 21, 97.122, 97.221, 97.222, 97.321 and 97.322. OR alternately, when in effect, comply with the Cross

- State Air Pollution Rule requirements , as applicable, as required in section I.XXX.8. b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate compliance with the applicable NO

x hourly emission limit by using fuel consumption records and AP

- 42 emission factor. [s. 285.65(3), Wis. Stats.

, s. 407.09(4), Wis. Adm. Code

, and 07

- SDD

- 301]

(2) The permi ttee shall operate and maintain separated overfire air (SOFA) and low

- NOx burner systems on boilers
B01 and B02 when firing solid fuel as permitted under 07

- SDD

- 301. [ss. NR 407.09(1) and (4), Wis. Adm. Code]

(3) The permitte shall perform the boiler ins pections required by I.A.1

. b.(9). [s. NR 407.09(4)(a)3.b., Wis. Adm. Code] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever nitrogen oxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 7 or
other m ethod approved by the Department in writing. [s. NR 439.06(6), Wis. Adm. Code]

(2) The permittee shall keep monthly records of the type and amount of fuel fired in each boiler. [s. NR 439.04(1)(d), Wis. Adm. Code]

(3) The permittee shall maintain plans and specifications showing that separated overfire air and low

- NOx burner systems are installed on boilers B01 and B02. [s. NR 439.04(1)(d), Wis. Adm. Code and 07

- SDD

- 301]

( 4 ) The permittee shall keep records of boiler inspections as required by I.A.1.c .(6) [s. NR 439.04(1)(d), Wis. Adm. Code
and 07

- SDD

- 301]

11 Th e s e limit ations are e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 7

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- C oal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 4. Sulfur Dioxide

a. Limitations: (1) Emissions may not exceed the following rates based on a 3

- hour rolling average 12 : (a) 1653.3 pounds per hour total from boilers B01 an d B02 combined ; (b) 1029.6 pounds per hour from S01 with the emissions from B02 limited to 62 3.7 pound per hour, with combined emissions from B01 and B02 not to exceed 1653.3 pounds per hour; and (c) 1200 pounds per hour from boiler B02 with the emission s from B01 limited to 453.6 pounds per hour, with combined emissions from B01 and B02 not to exceed 1653.3 pounds per hour. [s. 285.65(7), Wis. Stats., s. 285.65(3), Wis. Stats. and s. NR 404.04(2)(b), Wis. Adm. Code and 07

- SDD

- 301]

(2) Acid Rain Requirem ents: Boilers B01 and B02 are Affected Acid Rain Units subject to Acid Rain Requirements. As such the permittee shall comply with the applicable requirements included in the Acid Rain Portion of the Operation Permit in
Section I.ZZZ.

(3) Clean Air Inter state Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR) Requirements: Boilers B01 and B02 are subject to the SO2 CAIR requirements. As such, the permittee shall comply with the CAIR requirements as outlined in section I.XXX.8.
and in the CAIR Permit A pplication (for sources subject to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit and 40 CFR 97.121, 97.122, 97.221, 97.222,
97.321 and 97.322. OR alternately, w hen in effect, comply with the Cross

- State Air Pollution Rule requirements

, as applicable

, as required in section I.XXX.8. b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall calibrate, maintain and oper ate a continuous monitoring system for the
measurement of sulfur dioxide emissions from each stack, in accordance with the performance specifications in 40 CFR Part 75, Appendices A to I. 13 [ss. NR 439.09(2), and NR 439.095(1)(f) and (6), Wis. Adm. Code an d 07

- SDD

301] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever sulfur dioxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 6 or any other method approved by the Department in writing. [s. NR 439.0 6(2), Wis. Adm. Code]

(2) The continuous sulfur dioxide monitor required by I.A.4.b.(1) shall perform sampling, analyzing, and data recording as follows: (a) complete one cycle of sampling, analyzing, and data recording for each successive
15

- minute perio d. (b) the values recorded shall be averaged hourly. (c) hourly averages shall be computed from 4 data points equally spaced over each 1 hour period, except during periods when calibrations, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separa ted by a minimum of 15 minutes. [s. NR 439.09(9)(b), Wis. Adm. Code and 07

- SDD

- 301]

(3) The permittee shall submit quarterly excess emission reports to the Department by
Janu ary 30, April 30, July 30, and October 30 for the previous calendar quarter. [s. NR 439.09(10), Wis. Adm. Code and 07

- SDD

- 301]

(4) Excess emissions for sulfur dioxide are any 3

- hour rolling average during which the average sulfur dioxide emissions exceed the emission limitation in I.A.4.a.(1). [s. NR 439.09(10)(b), Wis. Adm. Code and 07

- SDD

- 301]

12 These limits are e s tablished in the permit because the source was reviewed with t h ese emission rate s and it was determined
that no 3

- hour sulfur dioxide ambient air quality standards would be violated when operated as proposed.

13 The permittee is exempt from the biennial sulfur dioxide compliance tests required by ss. NR 439.075(2)(a )2., and (3)(b), Wis. Adm. Code provided that they operate a continuous sulfur dioxide monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code, pursuant to s. NR 439.075(4)(a)2

. , Wis. Adm. Code. The permittee is exempt from the periodic fuel sampling and analysis requirements of s. NR 439.085(2), Wis. Adm. Code provided they operate a continuous sulfur dioxide emission monitor that meets the performance specification requirements of s

. NR 439.09, Wis. Adm. Code, pursuan t to s. NR 439.085(1)(c), Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 8

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Co ntrol Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 5. Carbon Monoxide

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions from boiler B01 may not exceed the fol lowing: (i) 0.29 pounds/mmBTU heat input averaged over any 12

- month period, excluding times when the unit is non

- operational and periods of startup and shutdown; and (ii) 4.8 tons in any calendar day, including all hours of operation or non

- operation (b) Emissions from boiler B02 may not exceed the following: (i) 0.29 pounds/mmBTU heat input averaged over any 12

- month period, excluding times when the unit is non

- operational and periods of startup and shutdown; and (ii) 5.6 tons in any calendar day, includi ng all hours of operation or non

- operation [s. NR 405.08, Wis. Adm. Code and 07

- SDD

- 301] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall calibrate, maintain and operate a continuous monitoring system for the
measurement of carbon monoxide emissions from each stack, in accordance with the performance specifications in s. NR 439.09(4), Wis. Adm. Code. [ss. NR 405.08, NR 439.09(4) and NR 439.095(1)(f), Wis. Adm. Code and
0 7

- SDD

- 301] (1) Reference Test M ethod for Carbon Monoxide Emissions: Whenever carbon monoxide emission testing is required, the permittee shall use U.S. EPA Method 10 or any other method approved by the Department in writing. [s. NR 439.06(4)(a), Wis. Adm. Code]

(2) The continuous car bon monoxide monitor required by I.A.5.b.(1) shall perform sampling, analyzing, and data recording as follows: (a) complete one cycle of sampling, analyzing, and data recording for each successive
15

- minute period. (b) the values recorded shall be averaged hourly. (c) hourly averages shall be computed from 4 data points equally spaced over each 1 hour period, except during periods when calibrations, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall con sist of at least 2 data points separated by a minimum of 15 minutes. (d) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substitu ted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F Section 3.3.4.1. [s. NR 439.09(9)(b), Wis. Adm. Code and 07

- SDD

- 301]

(3) The permittee shall submit quarterly excess emission reports to the Department by January 30, April 30, July 30, and October 30 for the previ ous calendar quarter. [s. NR 439.09(10), Wis. Adm. Code and 07

- SDD

- 301]

(4) Excess emissions for carbon monoxide are defined as: (a) any calendar day during which the total mass emissions of carbon monoxide exceed the emission limitations in I.A.5.a.(1) (a)(ii) and I.A.5.a.(1)(b)(ii). (b) any month in which the calculated 12

- month average carbon monoxide emission rate exceeds the emission limitations in I.A.5.a.(1)(a)(i) and I.A.5.a.(1)(b)(i). [s. NR 439.06(4)(b), Wis. Adm. Code and 07

- SDD

- 301]

(5) Unle ss otherwise required by the Department in writing, this permit grants the permittee approval to submit a summary excess emission report in lieu of the full excess emission reports. This summary report shall be submitted on a Department form or in a
format approved by the Department. [s. NR 439.09(10)(d), Wis. Adm. Code and 07

- SDD

- 301]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 9

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 5. Carbon Monoxide

– (Continued) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) The permittee shall keep records a dequate to show: (a) Periods of boiler startup 14 , including when boiler startup began and ended; (b) Period of boiler shutdown 15 , including when boiler shutdown began and ended. [s. NR 439.04(1)(d), Wis. Adm. Code]

14 Section NR 400.02(152), Wis. Adm. Code defines “startup” as “the setting in operation of a facility or its emission control equipment for any purpose which produces emissions”.

15 Section NR 400.02(144), Wis. Adm. Code defines “shutdown” as “the cessation of operation of a direct or portable source or of emission control equipment”.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 10

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 6. * Hazardous Ai r Contaminants Regulated by ch. NR 445, Wis. Adm. Code

a. Limitations: (1) * Except as provided in s. NR 445.07(5), Wis. Adm. Code, the following requirements apply 16 :
(a) * The permittee may not cause, allow or permit emissions of a hazardous air contam inant listed in Table A of s. NR 445.07, Wis. Adm. Code, in such quantity or concentration or for such duration as to cause an ambient air concentration of the contaminant off the source property that exceeds the concentration in column (g) of Table A for the contaminant. [s. NR 445.07(1)(a), Wis. Adm. Code]

(b) * If a hazardous air contaminant for which a control requirement is identified in column (i) of Table A of s. NR 445.07, Wis. Adm. Code, is emitted in a quantity greater than the applicable amount listed in column (f) 17 of Table A, the permittee shall control emissions of the contaminant to a level identified in column (i) of the table, according to the applicable compliance requirements of s. NR 445.08, Wis. Adm. Code. [s. NR 445.07(c), Wis. Adm. C ode]

(2) * The permittee shall achieve compliance with the emission limitations and control requirements of I.A.6.a.(1) for each hazardous air contaminant by doing one or any combination of the following:

(a) * Limiting non

- exempt, potential to emit emiss ions to less than the applicable thresholds in column (f) of Table A of s. NR 445.07, Wis. Adm. Code. 18 [s. NR 445.08(2)(a), Wis. Adm. Code]

(b) * Limiting the quantity, concentration or duration of non

- exempt, potential to emit emissions of each hazardous air contaminant that has a standard expressed as an ambient air concentration in Table A of s. NR 445.07, Wis. Adm. Code so that the ambient air concentration off the source property is less than the concentration allowed under column (g) of Table A. [s

. NR 445.08(2)(b), Wis. Adm. Code]

(c) * Limiting the quantity, concentration or duration of non

- exempt, potential to emit emissions of each hazardous air contaminant with a control requirement in column (i) of Table A of s. NR 445.07, Wis. Adm. Code having a unit risk factor established by either the EPA or the California air resources board, so as not to cause an ambient air concentration off the source property that results in an inhalation impact greater than 1 x 10 - 6 (as determined by the equation in s. NR 445.08(2)(c), Wis. Adm. Code). [s, BR 445.08(2)(c), Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) * To demonstrate compliance with conditions I.A.6.a.(1) and (2), the use of alternate fuels in
boi lers B01 and B02 may not exceed the following rates: (a) Wood Waste Usage Limitations: (i) Boiler B01: 1) 85.8 tons per hour; and 2) 284,090 tons during each

12 consecutive month period. (ii) Boiler B02: 1) 100 tons per hour; and 2) 284,090 tons during each

12 consecutive month period.

{continued on Next Page...} (1) * The permittee shall keep the following records:
Wood Waste: (a) The amount of wood waste combusted in each boiler in tons per hour; (b) The amount of wood waste combusted in each boiler during each calendar month, in tons per month; (c) The amount of wood waste combusted in each boiler totaled for each 12 consecutive month period, in tons; Waste Water Sludge: (d) The amount of waste water sludge combusted in each boiler in tons per hour ; (e) The amount of waste water sludge combusted in each boiler during each calendar month, in tons per month; (f) The amount of waste water sludge combusted in each boiler totaled for each 12 consecutive month period, in tons; {continued on next page...}

16 HAP emissions from natural gas and distillate fuel oil combustion are exempt since they are group 1 virgin fossil fuels,
pursuant t o s. NR 445.07(5)(a), Wis. Adm. Code. HAP emissions from coal combustion are exempt because coal is a group 2 virgin fossil fuel and the boiler stacks meet the downwash minimization stack height criteria pursuant to s. NR 445. 07(5)(b)

, Wis. Adm. Code. T he conditions in this section of the permit apply to hazardous air contaminant emissions generated by the
combustion of alternate fuels in boilers B01 and B02.

17 The stacks (S01 and S02) exhausting boilers B01 and B02 are greater than 75 feet in height. The stacks are unobstructed discharge points, exhausting emissions within 10 degrees of vertical as required by s. NR 445.07(6)(a), Wis. Adm. Code.

18 The boilers meet the requirements of s. NR 445.07(6)(a) and (b), Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 11

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CO NTINUED)

Pollutant: 6. * Hazardous Air Contaminants Regulated by ch. NR 445, Wis. Adm. Code

- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) * {...continued from previous page...} To demonstrate compliance with conditions I.A.6.a.(1) and (2), the use of alternate fuels in boilers B01 and B02 may not exceed the following rates: (b ) Waste Water Sludge Usage Limitations: (i) Boiler B01: 1) 3.7 tons per hour; and 2) 8333 tons during each 12 consecutive month

p eriod. (ii) Boiler B02: 1) 3.7 tons per hour; and 2) 8333 tons during each 12 consecutive month

period. ( c ) Refuse Derived Fuel Usage Limitations: (i) Boiler B01: 1) 3.09 tons per hour; and 2) 13,889 tons during each 12 consecutive month

period. (ii) Bo iler B02: 1) 3.09 tons per hour; and 2) 13,889 tons during each 12 consecutive month

period. ( d ) Tire Derived Fuel: (i) Boiler B01: 1) 31.9 tons per hour; and 2) 279,444 tons during each 12 consecutive

month period. (ii) Boiler B02: 1) 37.2 tons per ho ur; and 2) 325,872 tons during each 12 consecutive

month period. ( e ) Transformer Oil: (i) Boiler B01: None allowed. (ii) Boiler B02: 1) 699 gallons per hour; and 2) 227,273 gallons during each 12 consecutive

month period [s. NR 445.08, Wis. Adm. Code]

(2) Partially burned coal requirements : (a) The amount of Rhinelander Paper Mill (RPM) (fid # 744008100) partially burned coal that is received for combustion in boilers B01, B02, and B03, in any calendar year may not exceed 10,400 tons. (b) The amount of ash from Wausau

- Mosinee Mill (fid # 737009570) received for combustion in B01, B02 and B03 in a calendar year may not exceed 10,000 tons. 19 (c) The permittee shall obtain written approval from the department, prior to burning partially burned coal from other sources. (d) The permittee shall perform an annual elemental metal analysis of the partially burned coal from facilities fid#s 744008100 and 737009570 (or other ash as approved under I.A.6.b.(2)(c) prior to or within 90 days after the fuel is first burned in any of the boilers, in each calendar year. Elemental metal analysis is required once in any calendar year that partially burned coal is fired in any of the boilers. [ss. 285.65(3) and (10), Stats. and s. NR 407.09(4)(a)3.b., Wis. Adm.
Code and 0 7

- SDD

- 301] (1) * {...continued from previous page...} The permittee shall keep the following records: Refuse Derived Fuel: ( g ) The amount of refuse derived fuel combusted in each boiler in tons per hour; ( h ) The amount of refuse derived fuel combusted in

eac h boiler during each calendar month, in tons per month; ( i ) The amount of refuse derived fuel combusted in
each boiler totaled for each 12 consecutive month period, in tons;
Tire Derived Fuel: ( j ) The amount of tire derived fuel combusted in each
boiler in tons per hour; ( k ) The amount of tire derived fuel combusted in each boiler during each calendar month, in tons per month; ( l ) The amount of tire derived fuel combusted in each boiler totaled for each 12 consecutive month period, in tons; Transformer Oil: ( m ) The amount of transformer oil combusted in boiler B02, in gallons per hour; ( n ) The amount of transformer oil combusted in boiler B02 during each calendar month, in gallons per month; ( o ) The amount of transformer oil combusted in
boiler B02 to taled for each 12 consecutive month period, in gallons. [s. NR 439.04(1)(d), Wis. Adm. Code]

(2) To demonstrate compliance with I.A.6.b.(2), the permittee shall keep records of the amount in tons, of
ash received for combustion from facilities FID #s
744 009100 and 737009570 monthly and in a calendar year. [s. NR 439.04(1)(d), Wis. Adm. Code and 07

- SDD

- 301]

(3) The permittee shall keep records to demonstrate compliance with I.A.6.b.(2)(d). [s. NR 439.04(1)(d), Wis. Adm. Code]

19 The company names a ssociated with these fid#s may be changed and still maintain compliance with this condition.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 12

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Ha zardous Air Pollutants Regulated by the Clean Air Act: National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this se ction no later than the compliance date in I.A.7.a.(5). [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b), s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.]

a. Limitations: (1) For each of boilers B01 and B02, the p ermittee shall comply with ONE of the following: (a) Filterable particulate matter may not exceed : 0.03 lbs/mmBtu or 0.3 lbs/MWh gross electric output; OR (b) Total non

- Hg HAP metals may not exceed : 0.00005 lbs/mmBtu or 0.5 lbs/GWh; OR (c) Individual Met al HAP metals may not exceed all of the following: (i) Antimony (Sb): 0.8 lbs/TBtu or 0.008 lbs/GWh; (ii) Arsenic (As): 1.1 lbs/TBtu or 0.02 lbs/GWh; (iii) Beryllium (Be): 0.2 lbs/TBtu or 0.002 lbs/GWh; (iv) Cadmium (Cd): 0.3 lbs/TBtu or 0.003 lbs/GWh; (v) Chromium (Cr): 2.8 lbs/TBtu or 0.03 lbs/GWh; (vi) Cobalt (Co): 0.8 lbs/TBtu or 0.008 lbs/GWh; (vii) Lead (Pb): 1.2 lbs/TBtu or 0.02 lbs/GWh; (viii) Manganese (Mn): 4.0 lbs/TBtu or 0.04 lbs/GWh; (ix) Nickel (Ni): 3.5 lbs/TBtu or 0.04 lbs/GWh; and (x) Selenium (Se): 5.0 lbs/TBtu or 0.06 lbs/GWh. [40 CFR s. 63.9991(a)(1) and 40 CFR Part 63, Subpart UUUUU, Table 2, condition 1.a.

, s. 285.65(13), Wis. Stats

. ]

(2) For each of boilers B01 and B02, the permittee shall comply with ONE of the following: (a) Hydrogen c hloride (HCl) emissions may not exceed : 0.002 lbs/mmBtu or 0.02 lbs/MWh; OR (b) Sulfur dioxide (SO2) emissions may not exceed: 0.2 lbs/MMBtu or 1.5 lbs/MWh. (c) The alternate SO 2 limit in (b) shall only be used if the EGU: ( i ) Has a system using wet or dry flue gas desulfurization technology and SO 2 continuous emissions monitoring system (CEMS) installed on the unit; and ( ii ) T he wet or dry flue gas desulfurization technology installed on the unit is operated consistent with 40 CFR

s. 63.10 000(b) , at all times

. [40 CFR s s . 63.9991(a)(1) and (c), and 40 CFR Part 63, Subpart UUUUU, Table 2, condition 1.b.

, s. 285.65(13), Wis. Stats

. ]

(3) For each of boilers B01 and B02, mercury emissions may not exceed: 1.2 lbs/TBtu or 0.013 lbs/GWh. [40 CF R s.
63. 9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 2, condition 1.c.

, s. 285.65(13), Wis. Stats

. ]

(4) The emission limits ( I.A.7.a.(1)

- (3) ) and operating limits ( I.A.7.b.(4) ) in this section apply at all times except during periods of startup and shutdown; however, the permittee is required to meet the work practice requirements in conditions I.A.7.b. (3) during periods of startup or shutdown

. [ 40 CFR s. 63.10000(a)

, s. 285.65(13), Wis. Stats .]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 13

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of t his section no later than the compliance date in I.A.7.a.(5). [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b), s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.]

a. Limitations:

{

... continued from previous page...}

(5) The original compliance date for the requirements of this section is April 16, 2015. The department approved an extensi on of the compliance date to June 1, 2015 provided the following terms and conditions are met: 20
(a) This extension covers the requirem ent to meet 40 CFR Part 63 Subpart UUUUU known as MATS for affected
emissions units B01 and B02. (b) Wisconsin Public Service Corporation submitted a proposed compliance schedule on May 28, 2013 indicating that they expect to retire or refuel these units by Ju ne 1, 2015, and additional time is needed to maintain electric reliability
for the 2014

- 15 planning year. The anticipated compliance schedule is: (i) March 7, 2013

– Wisconsin Public Service Corporation enters Consent Decree with USEPA and is required to repower, refuel or retire Weston units B01 and B02 by June 1, 2015. (ii) June 1, 2015

– Final Compliance with 40 CFR Part 63 Subpart UUUUU. (c) If Wisconsin Public Service Corporation is unable to meet these timelines proposed in its May 23, 2013 letter, the
f acility shall submit a revised timeline to the department that includes an explanation of the reasons for any delays. Under no circumstances may final compliance extend beyond April 16, 2016. (d) To minimize emissions during the extension period (from April 1 6, 2015 until June 1, 2015) Wisconsin Public Service Corporation shall pursue the following guidelines: (i) The boilers (B01 and B02), when firing coal, shall be operated according to current operation permit
restrictions. (ii) The boilers shall be dispatched in a manner consistent with current MISO requirements. (iii) If the project extends past June 1, 2015, the facility shall complete the project as expeditiously as practicable. (e) Within 30 days of achieving final compliance, submit to the Department, notification that f inal compliance has been
achieved. (f) This extension is limited to a maximum of one year in duration and expires no later than April 16, 2016. (g) This extension is authorized under s. NR 460.05(7)(g), Wis. Adm. Code, s. 112(i)(3) of the Clean Air Act, and 40
CFR 63.6(i)(9). Failure to satisfy any of the above terms and conditions may result in termination of the compliance extension, in part or whole, pursuant to s. NR 460.05(7)(L), Wis. Adm. Code, and 40 CFR 63.6(i)(14). (h) Any initial performance tests and other activities are also extended by this approval and shall be completed within 180 days after the extended compliance date, as provided under ss. NR 460.05(7)(h)4. And 460.06(1)(b), Wis. Adm. Code and 40 CFR s. 63.6(i)(10)(iv) and 63.9984(f). [40 CFR, ss. 6 3.9982(a)(1), 63.9982(d), and 63.9984(b), s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.]

20 See Approval of NESHAP Compliance Extension Request letter from K. Hart of the department to P. Spicer of Wisconsin Public Service Corporation dated August 13, 2 013 and Addendum letter from K. Hart of the department to P Spicer of Wisconsin Public Service Corporation dated February 27, 2014.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 14

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (N ESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d ), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate that compliance with 40 CFR, Part 63, Subpart UUUUU has been achieved, by conducting the required performance tests and other activities, no later than 180 days after the compliance date in I.A.7.a.(5). [40 CFR s. 63.9984(f), s. 285.63(13), Wis. Stats.]

(2) Periodic Tune

- Up Requirements:
T he permittee shall conduct a tune

- up of the EGU burner and combustion controls at least each 36 calendar months, or each 48 calendar months if neural network combustion optimization software is employed, as specified in 40 CFR s. 63.10021(e) . [40
CFR s. 6 3.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 3, condition 1.] (a) Periodic tune

- ups of the EGU(s) shall be performed as part of the demonstration of continuous compliance [40 CFR s. 63.10000(e)] (b) The permittee shall perform the first tune

- up a s part of the initial compliance demonstration. Notwithstanding this requirement, the permittee may delay the first burner inspection until the next scheduled unit outage provided the requirements of
40 CFR s. 63.10005 are met. [40 CFR s. 63.10021(e)] (c) Subsequently, an inspection of the burner shall be performed at least once every 36 calendar months unless the EGU employs neural network combustion optimization during normal operations in which case an inspection of the burner and combustion controls
sh all be performed at least once every 48 calendar months. (d) Tune

- ups shall consist of the following: (i) As applicable, inspect the burner and combustion controls, and clean or replace any components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required inspection period. Repair of a burner or combustion control component requiring special order parts may be scheduled as follows:

a) Burner or combustion control component parts needi ng replacement that affect the ability to optimize NO X and CO
must be installed within 3 calendar months after the burner inspection, b) Burner or combustion control component parts that do not affect the ability to optimize NO X and CO may be installed

on a schedule determined by the operator; (ii) As applicable, inspect the flame pattern and make any adjustments to the burner or combustion controls necessary to optimize the flame pattern. The adjustment should be consistent with the manufacturer's specific ations, if available, or in accordance with best combustion engineering practice for that burner type; {continued on next page...} (1) Initial Performance Testing Requirements: Initial performance testing is required for all pollutants, to demonstrate compl iance with the applicable emission
limits in section I.A.7.a. (a) The permittee may conduct the initial performance testing in accordance with 40 CFR s. 63.10005(h), to determine whether the unit(s) qualifies as a low emitting EGU (LEE) for one or more app licable emissions limits, except if the EGU is equipped with an acid gas scrubber and has a main stack and bypass stack exhaust configuration. (b) For a qualifying LEE for Hg emissions limits, the permitee must conduct a 30

- day performance test using
Metho d 30B at least once every 12 calendar months to
demonstrate continued LEE status. (c) For a qualifying LEE of any other applicable emissions limits, the permittee must conduct a performance test at least once every 36 calendar months
to de monstrate continu ed LEE status. (d) If an EGU does not qualify as a LEE for total non

mercury HAP metals, individual non

- mercury HAP metals, or filterable particulate matter (PM), the permitee shall demonstrate compliance through an initial performance test and shall moni tor continuous performance through either use of a particulate matter continuous parametric monitoring system (PM CPMS), a PM CEMS, or, for an existing EGU, compliance performance testing repeated quarterly. (i) If using PM CPMS, the permittee shall establ ish a
site

- specific operating limit corresponding to the results of the performance test demonstrating compliance with the pollutant with which you choose to comply: total non

- mercury HAP metals, individual

non

- mercury HAP metals or filterable PM. The

permittee shall use the PM CPMS to demonstrate continuous compliance with this operating limit. If electing to use a PM CPMS, the permittee shall repeat the performance test annually for the selected pollutant limit and reassess and adjust the site

- specific

op erating limit in accordance with the results of the performance test. (ii) The permittee may also opt to install and operate a particulate matter CEMS certified in accordance with Performance Specification 11 and Procedure 2 of 40 CFR part 60, Appendices B and F, respectively, in
accordance with 40 CFR s. 63.10010(i). {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 15

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired El ectric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i )(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: (d) {...continued from previous page...} (iii) As applica ble, observe the damper operations as a function of mill and/or cyclone loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments and effecting repair to dampers, controls, mills, pu lverizers, cyclones, and sensors; (iv) As applicable, evaluate windbox pressures and air proportions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

fuel ratio and ensure that it is correctly calibrated and functioning properly. Such inspection may include calibrating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers
to ensure that the systems are operated as designed. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior
to the next tune

- up, should be corrected or repaired as necessary; (vi) Optimize combu stion to minimize generation of CO and NO X . This optimization
should be consistent with the manufacturer's specifications, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners,
overfire ai r controls, concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, adjusting combustion zone temperature profiles, and add

- on controls such as SCR and SNCR; CO optimization includes burners, o verfire air controls, concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, and adjusting combustion zone temperature profiles;

{continued on next page...} (1) Initial Performance Testing Requi rements: {...continued from previous page...] ( e ) If an EGU does not qualify as a LEE for hydrogen chloride (HCl), the permittee may demonstrate initial and continuous compliance through use of an HCl CEMS, installed and operated in accordance with Appendix B to 40 CFR, Part 63, Subpart UUUUU. As an alternative to HCl CEMS, the permittee may demonstrate initial and continuous compliance by conducting an initial and periodic quarterly performance stack test for HCl. If an EGU uses wet or dry flue gas desulfur ization technology (this includes limestone injection into a fluidized bed combustion unit), the permittee may apply a second alternative to HCl CEMS by installing and operating a sulfur dioxide (SO 2 ) CEMS installed and operated in
accordance with 40 CFR Part 75 to demonstrate compliance with the applicable SO 2 emissions limit. ( f

) If an EGU does not qualify as a LEE for Hg, the permittee shall demonstrate initial and continuous compliance through use of a Hg CEMS or a sorbent trap monitoring system, in ac cordance with Appendix A to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10000(c)(1)

, s. 285.65(13), Wis. Stats. ]

(2) Subsequent Performance Tests and Tune

- Ups: (a) For EGUs using PM CPMS to monitor continuous performance with an applicable emission limi t as provided for under 40 CFR s. 63.10000(c) (see condition I.A.7.c.(1) ), you must conduct all applicable performance tests according to Table 5 to 40 CFR Part 63, Subpart UUUUU and 40
CFR s. 63.10007 at least every year. [40 CFR s. 63.10006(a)]

(b) For EGUs meeting the LEE requirements of 40 CFR s. 63.10005(h) (see condition I.A.7.b.(4)(h) ), the performance test shall be repeated once every 3 years (once every year for Hg) according to Table 5 and 40 CFR

s. 63.10007. Should subsequent emissions testing r esults show the unit does not meet the LEE eligibility requirements, LEE status is lost. If this
should occur: (i) For all pollutant emission limits except for Hg, the permittee shall conduct emissions testing quarterly, except as otherwise provided in 40
CFR s. 63.10021(d)(1). (ii) For Hg, the permittee shall install, certify, maintain, and operate a Hg CEMS or a sorbent trap monitoring system in accordance with Appendix A to 40 CFR, Part 63, Subpart UUUUU, within 6 calendar months of losing LEE eligibilit y. Until the Hg CEMS or sorbent trap monitoring system is installed, certified, and operating, the permittee shall conduct Hg emissions testing quarterly, except as otherwise provided in 40 CFR s. 63.10021(d)(1). You must have 3 calendar years of testing a nd CEMS or sorbent trap monitoring system data that satisfy the LEE emissions criteria to reestablish LEE status. [40 CFR s. 63.10006(b)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 16

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom B oiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINU ED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.( 5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requiremen ts: (d) {...continued from previous page...} (vii) While operating at full load or the predominantly operated load, measure the concentration in the
effluent stream of CO and NO X in ppm, by volume, and oxygen in volume percent, before and after the

tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments are made). You may use portable CO, NO X and O 2 monitors for this measurement. EGU's employing neural netwo rk optimization systems need only provide a single pre

and post

- tune

- up value rather than continual values before and after each optimization adjustment made by the system; (viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in paragraphs (d)(i) through (ix) of this condition, including:

a) The concentrations of CO and NO X in the effluent stream in ppm by volume, and oxygen in volume percent, measured before and after an adjustment of
the EGU combustion systems; b) A description of any corrective actions taken as a part of the combustion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally c apable of using more than one type of fuel during that period; and (ix) Report the dates of the initial and subsequent tune

ups as follows:

a) If the first required tune

- up is performed as part of the initial compliance demonstration, report the date
of th e tune

- up in hard copy (as specified in 40 CFR

s. 63.10030) and electronically (as specified in 40
CFR s. 63.10031). Report the date of each subsequent tune

- up electronically (as specified in 40
CFR s. 63.10031). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

up and all subsequent tune

- ups electronically, in
accordance with 40 CFR s. 63.10031. [40 CFR s. 63.10021(e)

, s. 285.65(13), Wis. Stats

. ] (2) Subsequent Performance Tests and Tune

- Ups: {... continued from previous page...} (c) Except where paragraphs (a) or (b) of this condition apply, or where the permittee installs, certifies, and operates a PM CEMS to demonstrate compliance with a filte rable PM emissions limit, the permittee shall conduct all applicable periodic emissions tests for filterable PM, individual, or total HAP metals emissions according to Table 5 to Subpart UUUUU, 40 CFR s. 63.10007, and s. 63.10000(c), except as otherwise pr ovided in s. 63.10021(d)(1).

(d) Except where paragraph (b) of this section applies, for coal

fired EGUs that do not use either an HCl CEMS to monitor compliance with the HCl limit or an SO 2 CEMS to monitor compliance with the alternate equivalent SO 2 emis sion limit, the permittee shall conduct all applicable periodic HCl emissions tests according to Table 5 to Subpart UUUUU and 40 CFR s. 63.10007 at least quarterly, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(d)]

(e) {res erved}

(f) Unless following the requirements listed in paragraphs (g) and (h) of this condition, subsequent performance tests shall be
conducted as follows:

(i) performance tests required at least every 3 calendar years must be completed within 35 to 37 ca lendar months after the previous performance test; (ii) performance tests required at least every year must be completed within 11 to 13 calendar months after the previous performance test; and (iii) performance tests required at least quarterly must be completed within 80 to 100 calendar days after the previous performance test, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(f)]

(g) If electing to demonstrate compliance using emissions averaging under 40 CFR s. 63.10009, the permittee shall continue to conduct performance stack tests at the appropriate frequency given in section (c) through (f) of this section. [40 CFR s. 63.10006(g)]

(h) If a performance test on a non

- mercury LEE shows emissions in excess of 50 percent o f the emission limit and if the permittee chooses to reapply for LEE status, the permittee shall conduct performance tests at the appropriate frequency given in paragraphs (c) through (e) of this condition for that pollutant until all performance tests ove r a consecutive 3

- year period show compliance with the LEE criteria. [40 CFR s. 63.10006(h)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 17

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

St ack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESH AP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) Monitoring During Startup and Shutdown: (a) The permittee shall operate all CMS during startup and shutdown. (b) Startup means either the first

- ever firing of fuel in a boiler for the purpose of producing electricity, or the firing of fuel in a boiler after a shutdown event for any purpose.

(i) Startup ends when any of the s team from the boiler is used to generate electricity for sale over the grid or for any other purpose (including on site use). (ii) For startup of a unit, clean fuels shall be used, either natural gas or distillate oil or a combination
of clean fuels for i gnition. (iii) Once the EGU is converted to firing coal, all of the applicable control technologies except dry scrubber and SCR shall be engaged. (iv) Any dry scrubber and SCR systems, if present, shall be started appropriately to comply
with relevant st andards applicable during normal operation. (c) Shutdown means the cessation of operation of a boiler for any purpose.

(i) Shutdown begins either when none of the steam from the boiler is used to generate electricity for sale over the grid or for any oth er purpose (including on

- site use) or at the point of no fuel being fired in the boiler. (ii) Shutdown ends when there is both no electricity being generated and no fuel being fired
in the boiler. (iii) During shutdown, all applicable control technologies shall be operated, while firing coal. (d) The EGU(s) shall comply with all applicable emissions limits at all times except for periods that meet the definitions of startup and shutdown in 40 CFR Part 63, Subpart UUUUU

. (e) The permittee shall keep reco rds during periods of startup and shutdown. (f) The permittee shall provide reports concerning activities and periods of startup and shutdown, as specified in 40 CFR ss. 63.10011(g) and 63.10021(h) and (i)

. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63,
Su bpart UUUUU, Table 3, conditions 3 and 4.

, s. 285.65(13), Wis. Stats. ] (2) Subsequent Performance Tests and Tune

- Ups: {... continued from previous page...} (i) The permittee shall conduct performance tune

- ups according to 40
CFR s. 63.10021(e), as follows:

(i ) For EGUs not employing neural network combustion optimization during normal operation, each performance tune

- up specified in 40
CFR s. 63.10021(e) must be no more than 36 calendar months after the previous performance tune

- up. (ii ) For EGUs employing neur al network combustion optimization systems during normal operation, each performance tune

- up specified
in 40 CFR s. 63.10021(e) must be no more than 48 calendar months after the previous performance tune

- up. [40 CFR s. 63.10006(i)]

(j) The permittee shall report the results of performance tests and performance tune

- ups within 60 days after the completion of the performance tests and performance tune

- ups. The reports for all subsequent performance tests must include all applicable information required in 40 CFR s. 63.10031 . [40 CFR s. 63.10006(j)] [40 CFR s. 63.10006

, s. 285.65(13), Wis. Stats

. ]

( 3 ) Performance Tests

– Methods and Other Procedures: (a) Except as otherwise provided in this condition , the permittee shall conduct all required performance test s according to 40 CFR s. 63.7(d), (e), (f), and (h). The permittee shall also develop a site

- specific test plan according to the requirements in 40 CFR s. 63.7(c). (i) If using CEMS (Hg, HCl, SO 2 , or other) to determine compliance
with a 30

- boiler operat ing day rolling average emission limit, you must collect data for all nonexempt unit operating conditions (see 40
CFR s. 63.10011(g) and Table 3 to 40 CFR, Part 63, Subpart UUUUU). (ii) If conducting performance testing with test methods in lieu of
continu ous monitoring, operate the unit at maximum normal operating load conditions during each periodic (e.g., quarterly) performance test. Maximum normal operating load will be generally between 90 and 110 percent of design capacity but should be representative of site specific normal operations during each test run. (iii) For establishing operating limits with particulate matter continuous parametric monitoring system (PM CPMS) to demonstrate compliance with a PM or non Hg metals emissions limit, operate the un it at maximum normal operating load conditions during the performance test period. Maximum normal operating load will be generally between 90 and 110 percent of design capacity but should be representative of site specific normal operations during
each tes t run. [40 CF R s. 63.10007(a)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 18

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coa l Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating U nits, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. A dm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (4) Operating Limits: The permittee shall meet the applicable operating limit in Table 4 to Subpart
UUUUU as follows: (a) If demonstrat ing compliance using a PM CPMS,
maintain the 30

- boiler operating day rolling average PM CPMS output at or below the highest 1

- hour average measured during the most recent performance test demonstrating compliance with the filterable PM,
total non

- mercury H AP metals (total HAP metals, for liquid oil

- fired units), or individual non

- mercury HAP metals (individual HAP metals including Hg, for liquid oil

- fired units) emissions limitation(s). (b) The operating limits apply at all times except during periods of st artup and shutdown; however, the permittee is required to meet the work practice requirements in conditions I.A.7.b. (3) during periods of startup or shutdown. [40 CFR s. 63.9991(a)(2), s. 63.10000(a), and Table 4 to 40 CFR, Part 63, Subpart UUUUU

, s. 28 5.65(13),
Wis. Stats. ]

(5) At all times the permittee shall operate and maintain B01 and B02, including the associated air pollution control equipment and monitoring equipment, in a manner consistent with safety and good air pollution control practices fo r minimizing emissions. Determination of whether such operation and maintenance procedures are being used will be based on information which may include, but is not limited to, monitoring results, review of operation and maintenance procedures, review of o peration and maintenance records, and inspection of the source. [40 CFR s. 63.10000(b)

, s. 285.65(13), Wis. Stats

. ]

(6) Initial Compliance Requirements : (a) General Requirements: For each affected EGU, initial compliance with each applicable emissio n limit
in section I.A.7.a. shall be demonstrated with performance testing. Where two emissions limits are specified for a particular pollutant (e.g., a heat input

based limit in lb/MMBtu and an electrical output

based limit in lb/MWh), compliance may be
demonstrated with either emission limit.

{continued on next page...} ( 3 ) Performance Tests

– Methods and Other Procedures: {...continued from previous page...}
(b) The permittee shall conduct each performance test (including
traditional 3

- run stack tests, 30

- b oiler operating day tests based on CEMS data (or sorbent trap monitoring system data), and 30

- boiler operating day Hg emission tests for LEE qualification) according to the requirements in Table 5 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10007(b)]

(c) If choosing the filterable PM method to comply with the PM emission limit and demonstrate continuous performance using a PM CPMS as provided for in 40 CFR s. 63.10000(c), the permittee shall also establish an operating limit according to 40 CFR s. 63. 10011(b), s. 63.10023, and Tables 4 and 6 to Subpart UUUUU. Should the permittee desire to have operating limits that correspond to loads other than maximum normal operating load, the permittee shall conduct testing at those other loads to determine the ad ditional operating limits. [40 CFR s. 63.10007(c)]

(d) Except for a 30

- boiler operating day performance test based on CEMS (or sorbent trap monitoring system) data, where the concept of test runs does not apply, the permittee shall conduct a minimum of

t hree separate test runs for each performance test, as specified in 40
CFR s. 63.7(e)(3). Each test run shall comply with the minimum applicable sampling time or volume specified in Table 1 or 2 to Subpart UUUUU. Sections 63.10005(d) and (h) of 40 CFR (see
conditions I.A.7.b.(6)(d) and (h) ), respectively, provide special instructions for conducting performance tests based on CEMS or sorbent trap monitoring systems, and for conducting emission tests for LEE qualification. [40 CFR s. 63.10007(d)]

(e) To use t he results of performance testing to determine compliance with the applicable emission limits in I.A.7.a. , proceed as follows: (i) Except for a 30

- boiler operating day performance test based on CEMS (or sorbent trap monitoring system) data, if measurement results for any pollutant are reported as below the method detection level (e.g., laboratory analytical results for one or more sample components are below the method defined analytical detection level), the permittee shall use the method detection level

a s the measured emissions level for that pollutant in calculating compliance. The measured result for a multiple component analysis (e.g., analytical values for multiple Method 29 fractions both for individual HAP metals and for total HAP metals) may
includ e a combination of method detection level data and analytical data reported above the method detection level.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 19

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standa rds for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a )(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (a) {... continued from previous page...} One or more of the following activities may be required in conjunction with performance testing, as appropriate: collection of hourly electrical load data (megawatts); establishment of operating limits according to 40 CFR s. 63.10011 and 40 CFR Part 63, Subpart UUUUU, Tables 4 and 7; and CMS performance evaluations. In all cases, you must demonstrate initial compliance no later than the applicable date in paragraph (f) of 40 CFR s.
63.10005 for tune

- up work practices for exist ing EGUs, in 40 CFR s. 63.9984.

(i) To demonstrate initial compliance with an applicable emissions limit in section I.A.7.a. of this permit using stack testing, the initial performance test generally consists of three runs at specified process operating c onditions using approved methods. If required to establish operating limits (see paragraph (d) of 40 CFR s. 63.10005 and Table 4 to 40 CFR Part 63, Subpart UUUUU), the permittee shall collect all applicable parametric data during the performance test perio d. Also, if you choose to comply with an electrical output

based emission limit, you must collect hourly electrical load data during the test period. (ii) To demonstrate initial compliance using either a CMS that measures HAP concentrations directly ( i.e. , an Hg, HCl, or HF CEMS, or a sorbent trap monitoring system) or an SO 2 or PM CEMS, the initial performance test consists of 30 boiler operating days of data collected by the initial compliance demonstration date specified in 40
CFR s. 63.10005 with the c ertified monitoring system.

a) The 30

- boiler operating day CMS performance test must demonstrate compliance with the applicable Hg, HCl, HF, PM, or SO 2 emissions limit in Table 1 or 2 to this subpart. b) If you choose to comply with an electrical output

- ba sed emission limit, you must collect hourly electrical load data during the performance test period. [40 CFR s. 63.10005(a)]

{continued on next page...} (3) Performance Tests

– Methods and Other Procedures: (e) {...continued from previous p age...} (ii) If the limits are expressed in lb/MMBtu or lb/TBtu, the permittee shall use the F

- factor methodology and equations in sections 12.2 and 12.3 of EPA Method 19 in Appendix A

- 7 to Part 60 of 40 CFR. In cases where an appropriate F

- factor is not lis ted in
Table 19

- 2 of Method 19, you may use F

- factors from Table 1 in section 3.3.5 of Appendix F to Part 75 of 40 CFR, or F

- factors derived using the procedures in section 3.3.6 of Appendix to Part 75 of 40 CFR. Use the following factors to convert the po llutant concentrations measured during the initial performance tests to units of lb/scf, for use in the applicable Method 19 equations:

a) Multiply SO 2 ppm by 1.66 × 10 −7 ; b) Multiply HCl ppm by 9.43 × 10 −8 ; c) Multiply HF ppm by 5.18 × 10 −8 ; d) Multipl y HAP metals concentrations (mg/dscm) by 6.24 × 10 −8
; and e) Multiply Hg concentrations (μg/scm) by 6.24 × 10 −11

. (iii) To determine compliance with emission limits expressed in lb/MWh or lb/GWh, the permittee shall first calculate the pollutant
mass emi ssion rate during the performance test, in units of lb/h. For Hg, if a CEMS or sorbent trap monitoring system is used, use Equation A

- 2 or A

- 3 in Appendix A to 40 CFR, Part 63, Subpart UUUUU (as applicable). In all other cases, use an equation that has
the general form of Equation A

- 2 or A

- 3, replacing the value of K
with 1.66 × 10 −7 lb/scf

- ppm for SO 2 , 9.43 × 10 −8 lb/scf

- ppm for HCl (if an HCl CEMS is used), or 6.24 × 10 −8 lb

- scm/mg

- scf for HAP metals and for HCl (when performance stack testing is used), and defining C h as the average SO 2 or HCl concentration in ppm, or the averag e HAP metals concentration in mg/dscm. This calculation requires stack gas volumetric flow rate (scfh) and (in some cases) moisture content data (see 40 CFR ss. 63.10005(h)(3) and 63.10010). Then, if the applicable emission limit is in units of lb/GWh, use Equation A

- 4 in Appendix A to Subpart UUUUU to calculate the pollutant emission rate in lb/GWh. In this calculation, define (M) h as the calculated pollutant mass emission rate for the performance test (lb/h), and define (MW) h as the average electrical
loa d during the performance test (megawatts). If the applicable emission limit is in lb/MWh rather than lb/GWh, omit the 10 3 term from Equation A

- 4 to determine the pollutant emission rate in
lb/MWh. [40 CFR s. 63.10007(e)]

(f) Upon request, the permittee sha ll make available to the department such records as may be necessary to determine whether the performance tests have been done according to the requirements of this section. [40 CFR s. 63.10007(f)] [40 CFR s. 63.10007

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 20

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply w ith the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstratio n: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page...}
(b) Performance testing requirements: If using performance testing to demonstrate initial compliance with the applicable emissions l imits in
section I.A.7.a. of this permit, the permittee shall conduct the tests according to 40 CFR s. 63.10007 and Table 5 to 40 CFR Part 63, Subpart UUUUU. For the purposes of the initial compliance demonstration, test data and results from a performance test conducted prior to the compliance date in I.A.7.a.(5) , may be used provided that the following conditions are fully met:

(i) For a performance test based on stack test data,
the test was conducted no more than 12 calendar months prior to the complian ce date in I.A.7.a.(5) ; (ii) For a performance test based on data from a certified CEMS or sorbent trap monitoring system,
the test consists of all valid CMS data recorded in the 30 boiler operating days immediately preceding the compliance date in I.A.7.a .(5) ; (iii) The performance test was conducted in accordance with all applicable requirements in 40
CFR s. 63.10007 and Table 5 to 40 CFR Part 63 Subpart UUUUU; (iv) A record of all parameters needed to convert pollutant concentrations to units of the emis sion standard (e.g., stack flow rate, diluent gas concentrations, hourly electrical loads) is available for the entire performance test period; and (v) For each performance test based on stack test data, the permittee certifies, and keeps
documentation dem onstrating, that the EGU configuration, control devices, and fuel(s) have remained consistent with conditions since the prior performance test was conducted. [40 CFR s. 63.10005(b)]

(c) Operating limits: In accordance with 40 CFR s.
63.10010 and Table 4 to 40 CFR Part 63, Subpart UUUUU, the permitee may be required to establish operating limits using PM CPMS as part of the initial compliance demonstration. [40 CFR s. 63.10005(c)]

{continued on next page...} ( 4 ) Continuous Monitoring System Requirements: ( a) If demonstrating compliance with any applicable emissions limit through use of a continuous monitoring system (CMS), where a CMS includes a continuous parameter monitoring system (CPMS) as well as a continuous emissions monitoring system (CEMS), the per mitee shall develop a site

- specific monitoring plan and submit this site

- specific monitoring plan, if requested, at least 60 days before the initial performance evaluation (where applicable) of your CMS. The requirement to develop and submit a site

- specifi c monitoring plan does not apply to affected sources with existing monitoring plans that apply to CEMS and CPMS prepared under Appendix B to 40 CFR Part 60 or Part 75, and that meet the requirements of 40 CFR s. 63.10010. (The permittee may use the proces s described in § 63.8(f)(4), to request approval of monitoring system quality assurance and quality control procedures alternative to those specified in this condition and, if approved, include those in the site

- specific monitoring plan.) The monitoring pl an shall address the provisions in (b) through (e) below. (b) The site

- specific monitoring plan shall include the information specified in condition (e), below. Alternatively, the requirements of condition (e) are considered to be met for a particular CMS or sorbent trap monitoring system if: (i) The CMS or sorbent trap monitoring system is installed, certified, maintained, operated, and quality

- assured either according to 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU; and (ii) The recordkeeping and reporting requirements of 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU, that pertain to the CMS are met. (c) If requested by the department, the permittee shall submit the monitoring plan (or relevant portion of t he plan) at least 60 days before the initial performance evaluation of a particular CMS, except where the CMS has already undergone a performance evaluation that meets the requirements of 40 CFR s. 63.10010 (e.g., if the CMS was previously certified under another program). (d) The permittee shall operate and maintain the CMS according to the
site

- specific monitoring plan. (e) The provisions of the site

- specific monitoring plan shall address the following items: (i) Installation of the CMS or sorbent trap mo nitoring system sampling probe or other interface at a measurement location relative to each affected process unit such that the measurement is representative of control of the exhaust emissions (e.g., on or downstream of the last control device). See 40 C FR s. 63.10010(a) for further details. For PM CPMS installations, follow the procedures in 40 CFR s. 63.10010(h).

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 21

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/ hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Sta ndards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5). [40 CFR,
ss. 63.998 2(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page...}

(d) CMS requirement: If required to (or electing to) demonstrate initial compliance using a continuous monitoring system, the CMS must pass a performance evaluation prior to the initial compliance demonstration. If a CMS has been previousl y certified under another state or federal program and is continuing to meet the on

- going quality

- assurance (QA) requirements of that program, then, provided that the certification and QA provisions of that program meet the applicable requirements of 40 CF R ss. 63.10010(b) through (h), an additional performance evaluation of the CMS is not required.

(i) The permittee may demonstrate initial compliance with the applicable SO 2 or HCl, emissions limit in
condition I.A.7.a.(2) through use of an SO 2 or HCl
CEMS installed and operated in accordance with 40 CFR, Part 75 or 40 CFR, Part 63, Subpart UUUUU, Appendix B, as applicable. The permittee may demonstrate compliance with a filterable PM emission limit in condition I.A.7.a.(1) (a) through use of a PM
CEMS insta lled, certified, and operated in accordance
with 40 CFR s. 63.10010(i). Initial compliance is achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS data, expressed in units of the standard (see 40 CFR s. 63.10007(e)), meet s the applicable SO 2 , PM, or HCl emissions limit in section I.A.7.a. of this permit. Use Equation 19

- 19 of Method 19 in Appendix A

- 7 to 40 CFR, Part 60 to calculate the
30

- boiler operating day average emissions rate. ( N OTE : For this calculation, the term E hj in Equation 19

- 19 must be in the same units of measure as the applicable HCl
emission limit in condition I.A.7.a.(2) (a)

. (ii) When demonstrating compliance with the applicable
emission limits for total non

- mercury HAP metals,
individual non

- mercury HA P metals, total HAP metals, individual HAP metals, or filterable PM in section
I.A.7.a. of this permit using initial performance testing and continuous monitoring with PM CPMS, the permittee shall:

a) Demonstrate initial compliance no later than 180 days a fter the compliance date in I.A.7.a.(5);

{continued on next page...} ( 4 ) Continuous Monitoring System Requirements: (e) {...continued from previous page...} (ii) Performance and equipment specifications for the sample interface, the polluta nt concentration or parametric signal analyzer, and the data collection and reduction systems. (iii) Schedule for conducting initial and periodic performance
evaluations. (iv) Performance evaluation procedures and acceptance criteria (e.g., calibrations), including the quality control program in accordance with the general requirements of 40
CFR s. 63.8(d). (v) On

- going operation and maintenance procedures, in accordance with the general requirements of 40 CFR

ss. 63.8(c)(1)(ii), (c)(3), and (c)(4)(ii). (vi ) Conditions that define a CMS that is out of control
consistent with 40 CFR s. 63.8(c)(7)(i) and for responding to out of control periods consistent with 40 CFR

ss. 63.8(c)(7)(ii) and (c)(8). (vii) On

- going recordkeeping and reporting procedures, in

accor dance with the general requirements of 40 CFR

ss. 63.10(c), (e)(1), and (e)(2)(i), or as specifically required under 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10000(d)

, s. 285.65(13), Wis. Stats

. ]

( 5 ) Monitoring, Installation, Operation and Maintenan ce Requirements: (a) For the CEMS, PM CPMS, and sorbent trap monitoring systems used to provide data under 40 CFR, Part 63, Subpart UUUUU, the permittee shall comply with the continuous monitoring system installation requirements for the appropriate
exhaus t configurations as required by 40 CFR s. 63.10010(a). (Exhaust configurations include but are not limited individual stacks, a common stack configuration or a main stack plus a bypass stack.) [40 CFR s. 63.10010(a)]

(b) If using an oxygen (O 2 ) or carb on dioxide (CO 2 ) CEMS to convert measured pollutant concentrations to the units of the applicable emissions limit, the O 2 or CO 2 concentrations shall be monitored at a location that represents emissions to the atmosphere, i.e., at the outlet of the EGU, d ownstream of all emission control devices. The permittee shall install, certify, maintain, and operate the CEMS according to Part 75 of 40 CFR. Use only quality

- assured O 2 or CO 2 data in the emissions calculations; do not use Part 75 substitute data values . [40 CFR s. 63.10010(b)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 22

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fi red Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units , 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (d) (ii) {...continued from previous page...} b) Demonstrate continuous compliance with the
PM CPM S site

- specific operating limit that corresponding to the results of the performance test demonstrating compliance with the emission limit with which the permittee has chosen to comply;
and c) Repeat the performance test annually for the selected pollutant emissions limit and reassess and adjust the site

- specific operating limit in accordance with the results of the performance test. (iii) When demonstrating compliance with the Hg
emission limit in I.A.7.a.(3) using Hg CEMS or sorbent trap monitoring system s, initial compliance shall be demonstrated no later than 180 days after the compliance date in I.A.7.a.(5) . Initial compliance is achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS (or sorbent trap monitoring system) da ta, expressed in units of the standard (see section 6.2 of Appendix A to 40 CFR, Part 63, Subpart UUUUU), meets the applicable Hg emission limit in I.A.7.a.(3)

. [40 CFR s. 63.10005(d)]

(e) Tune

- ups: As part of the initial compliance demonstration, the per mittee shall conduct a performance tune

- up of each EGU according to 40
CFR s. 63.10021(e). [40 CFR s. 63.10005(e)]

(f) For existing affected sources a tune

- up may occur prior to April 16, 2012, so that existing sources without neural networks have up to 4 2 calendar months (3 years from promulgation plus 180 days) or, in the case of units employing neural network combustion controls, up to 54 calendar months (48 months from promulgation plus 180 days) after the date that is specified for your source in 40 C FR s. 63.9984 and according to the applicable provisions in s. 63.7(a)(2) as cited in Table 9 to Subpart UUUUU to demonstrate compliance with this requirement. If a tune

- up occurs prior to such date, the source must maintain adequate
records to show that t he tune

- up met the requirements of this standard. [40 CFR s. 63.10005(f)]

(g) {reserved}

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (c) If required to use a stack gas flow rate monitor, either for routine operation of a sorbent trap monitoring system or to convert pollutant concentrations to units of an electrical output

- based emission standard in Table 1 or 2 to Subpart UUUUU, the permittee shall install, certify, oper ate, and maintain the monitoring system and
conduct on

- going quality

- assurance testing of the system according to Part 75 of 40 CFR. Use only unadjusted, quality

- assured flow rate data in the emissions calculations. Do not apply bias adjustment
factors to the flow rate data and do not use substitute flow rate data in the calculations. [40 CFR s.63.10010(c)]

(d) If required to make corrections for stack gas moisture content when converting pollutant concentrations to the units of an emission
standard in Tab le 1 of 2 to Subpart UUUUU, the permittee shall install, certify, operate, and maintain a moisture monitoring system in accordance with Part 75 of 40 CFR. Alternatively, for coal

- fired units, appropriate fuel

- specific default moisture values from 40 CFR

s. 75.11(b) may be used to estimate the moisture content of the stack gas. If a moisture monitoring system is installed and operated, do not use substitute moisture data in the emissions calculations. [40 CFR s. 63.1001(d)]

(e) If using an HCl CEMS, the per mittee shall install, certify, operate, maintain, and quality

- assure the data from the monitoring system in accordance with Appendix B to Subpart UUUUU.
Calculate and record a 30

- boiler operating day rolling average HCl
emission rate in the units of the st andard, updated after each new boiler operating day. Each 30

- boiler operating day rolling average emission rate is the average of all the valid hourly HCl emission rates in the preceding 30 boiler operating days (see section 9.4 of Appendix B to Subpart UU UUU). [40 CFR s. 63.10010(e)]

(f)(i) If using an SO 2 CEMS, the permittee shall install the monitor at the outlet of the EGU, downstream of all emission control devices, and shall certify, operate, and maintain the CEMS according to Part 75 of 40 CFR. (ii) For on

- going QA, the SO 2 CEMS shall meet the applicable daily, quarterly, and semiannual or annual requirements in sections 2.1 through 2.3 of Appendix B to Part 75 of 40 CFR, with the following addition: The permittee shall perform the linearity checks r equired in section 2.2 of Appendix B to Part 75
of 40 CFR if the SO 2 CEMS has a span value of 30 ppm or less.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 23

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standa rds for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a )(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from pre vious page...} (h) Low emitting EGUs: The provisions of this paragraph (h) apply to all pollutants with emissions limits from existing EGUs. This compliance option may not be pursued, if for EGUs equipped with an acid gas scrubber and with
a main stack and bypass stack exhaust configuration.

(i) An EGU may qualify for low emitting EGU (LEE) status for Hg, HCl, filterable PM, total

non

- Hg HAP metals, or individual non

- Hg HAP metals if performance test data is collected that meets the requirements of this para graph (h), and
if those data demonstrate:

a) For all pollutants except Hg, performance test emissions results less than 50 percent of the applicable emissions limits in I.A.7.a. for all required testing for 3 consecutive years; or b) For Hg emissions, eith er:

1) Average emissions less than 10 percent of the applicable Hg emissions limit in I.A.7.a.(3) (expressed either in units of lb/TBtu or lb/GWh); or 2) Potential Hg mass emissions of 29.0 or fewer pounds per year and compliance with the applicable Hg emission limit in I.A.7.a.(3) (expressed either in units of lb/TBtu or lb/GWh). (ii) For all pollutants except Hg, the permittee shall conduct all required performance tests
described in 40 CFR s. 63.10007 to demonstrate that a unit qualifies for LEE statu s.

a) When conducting emissions testing to demonstrate LEE status, the permittee shall increase the minimum sample volume specified in Table 1 or 2 to 40 CFR, Part 63, Subpart UUUUU nominally by a factor of

two. b) Follow the instructions in 40 CFR

s. 63.1 0007(e) and Table 5 to Subpart
UUUUU to convert the test data to the units of the applicable standard.

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (f) {...continued from previous pag e...} (iii) Calculate and record a 30

- boiler operating day rolling average
SO 2 emission rate in the units of the standard, updated after each new boiler operating day. Each 30

- boiler operating day rolling average emission rate is the average of all of the va lid SO 2 emission rates in the preceding 30 boiler operating days. (iv) Use only unadjusted, quality

- assured SO 2 concentration values in the emissions calculations; do not apply bias adjustment factors to the
Part 75 SO 2 data and do not use Part 75 substitu te data values. [40 CFR s. 63.10010(f)]

(g) If using a Hg CEMS or a sorbent trap monitoring system, the permittee shall install, certify, operate, maintain and quality

- assure the data from the monitoring system in accordance with Appendix A to Subpart UUUU U. The permittee shall calculate and record a 30

- (or, if alternate emissions averaging is used, 90

- ) boiler operating day rolling average Hg emission rate, in units of the standard, updated after each new boiler operating day. Each 30

- (or, if alternate e missions averaging is used, 90

- ) boiler operating day rolling average emission rate, calculated according to section 6.2 of Appendix A to Subpart UUUUU, is the average of all of the valid hourly Hg emission rates in the preceding 30

- (or, if alternate emis sions averaging is used, a 90

- ) boiler operating days. Section 7.1.4.3 of Appendix A to Subpart UUUUU explains how to reduce sorbent trap monitoring system data to an hourly basis. [40 CFR s. 63.10010(g)]

(h) If using a PM CPMS to demonstrate continuous c ompliance with an operating limit, the permittee shall install, calibrate, maintain, and operate the PM CPMS and record the output of the system as follows: (i) Install, calibrate, operate, and maintain the PM CPMS according to the procedures in the approv ed site

- specific monitoring plan developed in accordance with 40 CFR s. 63.10000(d), and meet the requirements the following: a) The operating principle of the PM CPMS shall be based on in

stack or extractive light scatter, light scintillation, beta

attenu ation, or mass accumulation detection of the exhaust gas or representative sample. The reportable measurement output from the PM CPMS may be expressed as milliamps, stack concentration, or other raw data signal. b) The PM CPMS shall have a cycle time ( i.e

. , period required to complete sampling, measurement, and reporting for each measurement) no longer than 60 minutes. c) The PM CPMS shall be capable, at a minimum, of detecting and responding to particulate matter concentrations of 0.5 mg/acm.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 24

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmB tu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The p ermittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) {...continued from previous page...} (iii) For Hg, the permittee shall conduct a 30

- boiler operating day performance test using
M ethod 30B in Appendix A

- 8 to 40 CFR Part 60 to determine whether a unit qualifies for LEE status. Locate the Method 30B sampling probe tip at a point within the 10 percent centroidal
area of the duct at a location that meets Method 1 in Appendix A

- 1 to 40 CFR Part 60 and conduct at least three nominally equal length test
runs over the 30

- boiler operating day test period. Collect Hg emissions data continuously over the entire test period (except when changing sorbent traps or performing required reference me thod QA procedures), under all process operating conditions. The permittee may use a pair of sorbent traps to sample the stack gas for no more than 10 days.

a) Depending on whether LEE status for Hg is
assessed in terms of the lb/TBtu or lb/GWh
emission li mit in I.A.7.a.(3) or in terms of the annual Hg mass emissions limit of 29.0 lb/year, the permittee shall collect some or all of the following data during the 30

- boiler operating day test period (see paragraph (h)(iii)c) of this condition):

1) Diluent gas (CO 2 or O 2 ) data, using either Method 3A in Appendix A

- 3 to Part 60 of 40 CFR or a diluent gas monitor that has been certified according to Part 75 of 40 CFR. 2) Stack gas flow rate data, using either Method 2, 2F, or 2G in Appendices A

- 1 and
A

- 2 to Part 60 of 40 CFR, or a flow rate monitor that has been certified according to
Part 75 of 40 CFR. 3) Stack gas moisture content data, using either Method 4 in Appendix A

- 1 to Part 60 of 40 CFR, or a moisture monitoring system that has been certified according t o Part 75 of 40 CFR. Alternatively, an appropriate fuel

specific default moisture value from 40 CFR

s. 75.11(b) may be used in the calculations. 4) Hourly electrical load data (megawatts), from facility records.

{continued on next page...} ( 5 ) Monitoring, I nstallation, Operation and Maintenance Requirements: (h) {...continued from previous page...}

(ii) Complete the initial performance evaluation no later than October 13, 2015 or 180 days after the compliance date in I.A.7.a.(5),
whichever is later

. (iii) Collect PM CPMS hourly average output data for all boiler operating hours except as indicated in paragraph (h)(v) of this condition. Express the PM CPMS output as milliamps, PM concentration, or other raw data signal value.

(iv) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CPMS output collected during all nonexempt boiler operating hours data (e.g., milliamps, PM concentration, raw data signal).

(v) The permittee shall collect data using the P M CPMS at all times the process unit is operating and at the intervals specified in paragraph (h)(i)b) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, required monitoring syst em quality assurance or quality control activities (including, as applicable, calibration checks and required zero and span adjustments), and any scheduled maintenance as defined in
the site

- specific monitoring plan.

(vi) The permittee shall use all the da ta collected during all boiler operating hours in assessing the compliance with your operating limit except:

a) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctions, or required monitoring system quality assurance or quality control activities conducted during monitoring system malfunctions are not used in calculations (report any such periods in your annual deviation report); b) Any data collected during periods when the monitoring system is

out o f control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or quality control activities conducted during out

- of

- control periods are not used in calculations (report emissions or operating levels and report any such periods in the annual deviation report); c) Any data recorded during periods of startup or shutdown. (vii) The permittee shall record and make available upon request

re sults of PM CPMS system performance audits, as well as the dates and duration of periods from when the PM CPMS is out of control until completion of the corrective actions necessary to return the PM CPMS to operation consistent with the site

- specific monit oring plan. [40 CFR s.63.10010(h)] {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 25

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- C oal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) (iii) {...continued from previous page...} b) If a CEMS is used to measure CO 2 (or O 2 ) concentration, and/or flow rate, and/or moisture, record hourly average values of each parameter throughout the 30

- boiler operating day test period. If opting to use EPA reference methods rather than CEMS for any parameter, the permittee shall perform

at least one representative test run on each operating day of the test period, using the applicable reference
method. c) Calculate the average Hg concentration, in μg/m 3 (dry basis), for the 30

- boiler operating day performance test, as the arithmetic average of all Method 30B sorbent trap results. Also calculate, as applicable, the average values of CO 2 or O 2 concentration, stack gas flow rate, stack gas moisture content, and electrical load for the test period. Then:

1) To express the test results in units of lb/TBtu, follow the procedures in 40 CFR s. 63.10007(e). Use the average Hg concentration and diluent gas
values in the calculations. 2) To express the test results in units of lb/GWh, use Equations A

- 3 and A

- 4 in section 6.2.2 of Appendix A to Subpart UU UUU, replacing the hourly values
“C h ”, “Q h ”, “B
ws ” and “(MW) h ” with the average values of these parameters from the performance

test. 3) To calculate pounds of Hg per year, use one of the following methods:

A) Multiply the average lb/TBtu Hg emission r ate (determined according to paragraph (h)(3)(iii)(A) of this section) by the maximum potential annual heat input to the unit (TBtu), which is equal to the maximum rated unit heat input (TBtu/hr) times 8,760 hours. If the maximum rated heat input
value is expressed in units of MMBtu/hr, multiply it by 10 −6 to convert it to TBtu/hr; or

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (i) If choosing to comply with the PM filterable emissions limit in lieu of metal HAP limits, the permittee may choose to install, certify, operate, and maintain a PM CEMS and record the output of the PM CEMS as specified in paragraphs (i)(i) through (v) of this condition, below. The compliance limit will be expressed as
a 30

- boiler operating day r olling average of the numerical emissions limit value applicable for the unit in tables 1 or 2 to Subpart UUUUU.

(i) Install and certify the PM CEMS according to the procedures and requirements in Performance Specification
11

— Specifications and Test Proced ures for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix B to Part 60 of 40 CFR, using Method 5 at Appendix A

- 3 to Part 60 of 40 CFR and ensuring that the front half filter temperature shall be 160° ± 14 °C (320° ± 25 °F). The reportable measurement output from the PM CEMS must be expressed in units of the applicable emissions limit (e.g., lb/MMBtu, lb/MWh).

(ii) Operate and maintain the PM CEMS according to the procedures and requirements in Procedure 2

— Quality
A ssurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix F to Part 60 of 40 CFR.

a) The permittee shall conduct the relative response audit (RRA) for the PM CEMS at least once annually. b) The pe rmittee shall conduct the relative correlation audit (RCA) for the PM CEMS at least once every 3 years.

(iii) Collect PM CEMS hourly average output data for all boiler operating hours except as indicated in paragraph (i) of
this condition.

(iv) Calculate t he arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CEMS output data collected during all nonexempt boiler operating hours.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 26

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Co al Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the complia nce date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initia l Compliance Requirements : (h) (iii)c) 3) {...continued from previous page...} B) Multiply the average lb/GWh Hg emission rate (determined according to paragraph (h)(3)(iii)(B) of this section) by the maximum potential annual electricity generation (GWh), w hich is equal to the maximum rated electrical output of the unit (GW) times 8,760 hours. If the maximum rated electrical output value is expressed in units of MW, multiply it by 10 −3 to convert it to GW; or C) If an EGU has a federally

- enforceable permit limit on either the annual heat input or the number of annual operating hours, you may modify the calculations in paragraph (h)(3)(iii)(C)(1) of this section by replacing the maximu m potential annual heat input or 8,760 unit operating hours with the permit limit on annual heat input or operating hours (as applicable). [40 CFR s. 63.10005(h)]

(i) {reserved}

(j) Startup and shutdown: The permitee shall follow the requirements given in Table 3 to 40 CFR, Part 63, Subpart
UUUUU . [40 CFR s. 63.10005(j)]

(k) The permittee shall submit a Notification of Compliance Status summarizing the results of the initial compliance demonstration, as provided in 40 CFR s. 63.10030 . [40 CFR s.
63.100 05(k)] [40 CFR s. 63.10005, s. 285.65(13), Wis. Stats.]

( 7 ) Initial Demonstration of Compliance with Emission
Limitations and Work Practice Standards: (a) The permittee shall demonstrate initial compliance with each emissions limit in I.A.7.a. by conduct ing performance testing. [40 CFR s. 63.10011(a)]

(b) If demonstrating initial compliance with HAP metals or filterable PM emission limit(s) through performance stack tests and electing to use a PM CPMS to demonstrate continuous performance, the permittee shall also establish a site

- specific operating limit, in accordance with Table 4 to Subpart UUUUU, 40 CFR s. 63.10007, and Table 6 to Subpart UUUUU. The permittee may use only the parametric data recorded during successful performance tests ( i.e. , tests that demonstrate compliance with the applicable emissions limits) to establish an operating limit. [40 CFR s. 63.10011(b)]

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (i) {...continued from previous page...} (v) The permittee shall collect data using the PM CEMS at all times the process unit is operating and at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associat ed with monitoring system malfunctions, and required monitoring system quality assurance or quality control activities.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the operating limit except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctions, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in
calculati ons and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitoring system is out of control as specified in
the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or control activities conducted during out of control periods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) Any data recorded during periods of startup or
shutdown. b) The permittee shall record and make available upon request results of PM CEMS system performance audits, dates and duration of periods when the PM CEMS is out of control to completion of the correcti ve actions necessary to return the PM CEMS to operation
consistent with the site

- specific monitoring plan. [40 CFR s. 63.10010(i)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 27

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rat ed at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
Natio nal Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) Initial Demonstration of Compliance with Emission Limitations and Work Practice Standards: {...continued from previous page...} (c)(i) If using CEMS or sorbent trap monitoring systems to measure a HAP (e.g., Hg or HCl) directly, the first 30

- boiler operating day (or, if alternate emissions aver aging is used for Hg, the 90

- boiler operating day) rolling average emission rate obtained with
certified CEMS after the compliance date in I.A.7.a.(5) (or, if applicable, prior to that date, as described in 40 CFR

s. 63.10005(b)(2)), expressed in units of the standard, is the initial performance test. Initial compliance is demonstrated if the results of the performance test meet the applicable emission limit in
I.A.7.a. (ii) For a unit that uses a CEMS to measure SO 2 or PM emissions for initial compliance, the first 30 boiler operating day average
emission rate obtained with certified CEMS after the compliance
date in I.A.7.a.(5) (or, if applicable, prior to that date, as
described in 40 CFR s. 63.10005(b)(2)), expressed in units of the standard, is the init ial performance test. Initial compliance is demonstrated if the results of the performance test meet the applicable SO 2 or filterable PM emission limit in I.A.7.a. [40 CFR s.10011(c)]

(d) For candidate LEE units, use the results of the performance testing described in 40 CFR s. 63.10005(h) to determine initial compliance with the applicable emission limit(s) in I.A.7.a . and to determine whether the unit qualifies for LEE status. [40 CFR s. 63.10011(d)]

(e) The permittee shall submit a Notification of Compl iance Status containing the results of the initial compliance demonstration, according to 40 CFR s. 63.10030(e). [40 CFR s. 63.10011(e)]

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from prev ious page...}
(j) The permittee may choose to comply with the metal HAP emissions limits using CEMS approved in
accordance with 40 CFR s. 63.7(f) as an alternative to the performance test method specified in 40 CFR, Part 63, Subpart UUUUU. If approved to us e a HAP metals CEMS, the compliance limit will be expressed as a 30

- boiler operating day rolling average of the numerical emissions limit value in I.A.7.a.(1). If approved, the permittee may choose to install, certify, operate, and
maintain a HAP metals CE MS and record the output of the HAP metals CEMS as specified below: (i) a) Install and certify the HAP metals CEMS

according to the procedures and requirements in
the approved site

- specific test plan as required in
40 CFR s. 63.7(e). The reportable measur ement output from the HAP metals CEMS shall be expressed in units of the applicable emissions limit ( e.g. , lb/MMBtu, lb/MWh) and in the form
of a 30

- boiler operating day rolling average. b) Operate and maintain the HAP metals CEMS according to the procedur es and criteria in the site specific performance evaluation and quality control program plan required in 40 CFR

s. 63.8(d). (ii) Collect HAP metals CEMS hourly average output data for all boiler operating hours except as indicated in section (j)(iv) of th is condition.

(iii) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average HAP metals CEMS output data collected during all nonexempt boiler operating hours data.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 28

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)
Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Haz ardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requiremen ts of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Method s, Recordkeeping, and Monitoring:
(7) Initial Demonstration of Compliance with Emission
Limitations and Work Practice Standards: {...continued from previous page...} (f)(i) The permittee shall determine the fuel whose combustion produces the least uncontroll ed emissions, i.e. , the cleanest fuel, either natural gas or distillate oil, that is available on site or accessible nearby for use during periods of startup or shutdown. (ii) The cleanest fuel available, either natural gas or distillate oil, for use durin g periods of startup or shutdown determination may take safety
considerations into account. [40 CFR 2. 63.10011(f)]
(g) The permittee shall follow the startup or shutdown requirements given in Table 3 to 40 CFR, Part 63, Subpart UUUUU for EGU. [40 CFR s. 63.10011(g)] [40 CFR s. 63.10011

, s. 285.65(13), Wis. Stats

. ]

( 8 ) Continuous Compliance Demonstration: (a) The permittee shall demonstrate continuous compliance with each emissions limit in Table 2 to Subpart UUUUU (see condition I.A.7.a.), each operatin g limit in Table 4 to subpart UUUUU (see condition I.A.7.b.(4)), and each work practice standard in Tables 3 to Subpart UUUUU (see conditions I.A.7.a.(4) and I.A.7.b.(3)) that applies, according to the monitoring specified in Tables 6 and 7 to Subpart UUUU U as outlined below and
conditions I.A.7.b.(8)(b) through (g)

.

(i) If using CEMS to measure filterable PM, SO 2 , HCl, or Hg emissions, or using a sorbent trap monitoring system to measure Hg to demonstrate compliance with the applicable emission
limitation s in I.A.7.a ., the permittee shall demonstrate continuous compliance by calculating the 30

- (or 90

- ) boiler operating day rolling arithmetic average emissions rate in units of the applicable emissions standard basis at the end of each boiler operating day using all of the quality assured hourly average CEMS or sorbent trap data for the previous 30

- boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 1 of Table 7 to 40 CFR, Part 63, Subpart
UUUU U] {continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (j) {...continued from previous page...} (iv) The permittee shall collect data using the HAP metals CEMS at all times the process unit is operati ng and at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, and required monitoring system quality assurance or quality control
activiti es.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the emission limit except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfu nctions, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in calculations and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitor ing system is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or control activities conducted during out of cont rol periods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) Any data recorded during periods of startup or shutdown. b) The permittee shall record and make available upon request r esults of HAP metals CEMS system performance audits, dates and duration of periods when the HAP metals CEMS is out of control to completion of the corrective actions necessary to return the HAP metals CEMS to operation consistent with the site

- specific

per formance evaluation and quality control program plan. [40 CFR s. 63.10010(j)] [40 CFR s. 63.10010

, s. 285.65(13), Wis. Stats

. ]

( 6 ) Continuous Compliance Demonstration

– Monitoring and Data Collection: (a) The permittee shall monitor and collect data accor ding to this
condition and the site

- specific monitoring plan required by 40 CFR

s. 63.10000(d). (b) The permitee shall operate the monitoring system and collect data at all required intervals at all times that the affected EGU is operating, except for peri ods of monitoring system malfunctions or out

- of

- control periods (see 40 CFR s. 63.8(c)(7)), and required monitoring system quality assurance or quality control activities, including, as applicable, calibration checks and required zero and span adjustments. The permittee is required to affect monitoring system repairs in response to monitoring system malfunctions and to return the monitoring system to operation as expeditiously as practicable. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 29

A. Stack S01, Boiler B01, Control D evice C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pol lutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this sec tion no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeepin g, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (a) {...continued from previous page...}

(ii) If choosing to establish PM CPMS operating limits as allowed by I.A.7.b.(4) to demonstrate compliance with the
emission limitations in I.A.7.a. (1) (p articulate matter (PM), total

non

- mercury HAP metals, individual non

- mercury HAP metals), the permitee shall

a) Install, certify, maintain, and operate a PM CPMS for monitoring emissions discharged to the atmosphere according to 40 CFR s. 63.10010(g )(1) and b) Establish a site

- specific operating limit in units of PM CPMS output signal (e.g., milliamps, mg/acm, or other raw signal) using data from the PM CPMS and the PM or HAP metals performance tests according to the following procedures:

1) Collect PM CPMS output data during the entire period of the performance tests. 2) Record the average hourly PM CPMS output for each test run in the three run performance test. 3) Determine the highest 1

- hour average PM CPMS measured during the performance test de monstrating compliance with
the filterable PM or HAP metals emissions limitations. [40 CFR s. 63.10021(a) , Table 6 to 40 CFR, Part 63, Subpart UUUUU] (iii) If using PM CPMS to measure compliance with a parametric operating limit, the permittee shall demo nstrate continuous compliance by calculating the arithmetic 30

- boiler operating day rolling average of all of the quality assured hourly average PM CPMS output data (e.g., milliamps, PM concentration, raw data signal) collected for all operating hours for the previous 30 boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 2 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (iv) If using quarterly performance testing to measure compliance
with one o r more applicable emissions limits in condition
I.A.7.a ., the permitee shall demonstrate continuous compliance by calculating the results of the testing in units of the applicable emissions standard. [40 CFR s. 63.10021(a), item 4 of Table 7 to 40 CFR, P art 63, Subpart UUUUU] (v) When conducting periodic performance tune

- ups of your EGU(s), the permittee shall demonstrate continuous compliance by conducting periodic performance tune

- ups of the EGU(s), as specified in 40 CFR s. 63.10021(e). [40 CFR s. 63 .10021(a), item 5 of Table 7 to 40 CFR, Part 63, Subpart UUUUU]

{continued on next page...} ( 6 ) Continuous Compliance Demonstration

– Monitoring and Data Collection: {...continued from previous page...}
(c) The permtitee may not use data recorded during
EGU sta rtup or shutdown or monitoring system malfunctions or monitoring system out

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, or required monitoring system quality assurance
or control a ctivities in calculations used to report emissions or operating levels. The permittee shall use all the data collected during all other periods in assessing the operation of the control device and associated control system.

(d) Except for periods of monito ring system malfunctions or monitoring system out

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, and required monitoring system quality assurance or quality control activities includi ng, as applicable, calibration checks and required zero and span adjustments), failure to collect required data is a deviation from the monitoring requirements.

[40 CFR s. 63.10020

, s. 285.65(13), Wis. Stats

. ]

( 7 ) Notification Requirements: (a) The permi ttee shall submit all of the notifications in 40 CFR, ss. 63.7(b) and (c), 63.8 (e), (f)(4) and (6), and 63.9 (b) through (h) that apply by the dates specified. [40 CFR ss. 63.9984(c) and 63.10030(a)

, s. 285.65(13),
Wis. Stats. ]

(b) As specified in 40 CFR s. 63.9(b)(2), the permittee
shall submit an Initial Notification not later than 120 days after April 16, 2012. [40 CFR ss. 63.9984(c) and 63.10030(b)

, s. 285.65(13), Wis. Stats

. ]

(c) {reserved}

(d) When required to conduct a performance test, the permi ttee shall submit a Notification of Intent to conduct a performance test at least 30 days before the performance test is scheduled to begin. [40 CFR ss. 63.9984(c) and 63.10030(d)

, s. 285.65(13), Wis. Stats

. ]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 30

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)
Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the req uirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (a) {...continued from previous page...}

(vi) When complying with work practice standards during startup the permittee shall demonstrate continuous compliance by operat ing in accordance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 6 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (vii) When complying with work practice standards during shutdown, the permittee
shall demonstrate continuous co mpliance by operating in accordance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 7 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] [40 CFR s. 63.10021(a)]

(b) Except as otherwise provided in 40 CFR

s. 63.10020(c), if using a CEMS to measure
SO 2 , PM, HCl, or Hg emissions, or using a sorbent trap monitoring system to measure Hg emissions, the permittee shall demonstrate continuous compliance by using all quality

assured hourly data recorded by the CEMS (or sorbent trap monitori ng system) and the other required monitoring systems (e.g., flow rate,
CO 2 , O 2 , or moisture systems) to calculate the arithmetic average emissions rate in units of the
standard on a continuous 30

- boiler operating day (or, if alternate emissions averaging is used for Hg, 90

- boiler operating day) rolling average basis, updated at the end of each new boiler operating day. Use Equation 8 to determine the
30

- (or, if applicable, 90

- ) boiler operating day rolling average.

Where:

Her i is the hourly emissions rate for hour i and n is the number of hourly emissions rate values
collected over 30

- (or, if applicable, 90

- ) boiler operating days. [40 CFR s. 63.10021(b)]

{continued on next page...} ( 7 ) Notification Requirements: {...continued from previous page...} (e) W hen required to conduct an initial compliance demonstration as specified in 40 CFF s. 63.10011(a) , the permittee shall submit a Notification of Compliance Status according to 40 CFR s. 63.9(h)(2)(ii). The Notification of Compliance Status report shall cont ain all the following information, as applicable:

(i) A description of the affected source(s) including identification of which subcategory the source is in, the design capacity of the source, a description of the add

- on controls used on the source, descri ption of the fuel(s) burned, including whether the fuel(s) were determined by the permittee or EPA through a petition process to be a non

- waste under 40 CFR s. 241.3, whether the fuel(s) were processed from discarded non

hazardous secondary materials withi n the meaning of 40 CFR s. 241.3, and justification for the selection of fuel(s) burned during the performance test. (ii) Summary of the results of all performance tests and fuel analyses and calculations conducted to demonstrate initial compliance includi ng all established operating limits. (iii) Identification of whether compliance with each applicable emission limit will be demonstrated through performance testing; fuel moisture analyses; performance testing with operating limits (e.g., use of PM CPMS); CEMS; or a sorbent trap monitoring system. (iv) Identification of whether compliance will be demonstrated by emissions averaging. (v) A signed certification that all applicable emission limits and work practice standards have been met. (vi) If a deviation from any emission limit, work practice standard, or operating limit occurred, submit a brief description of the deviation, the duration of the deviation, emissions point identification, and the cause of the deviation in the Notification of Compliance Statu s report. (vii) In addition to the information required in 40 CFR s. 63.9(h)(2), your notification of compliance status must include the following:

a) A summary of the results of the annual performance tests and documentation of any operating limits that w ere reestablished during this test, if applicable. If stack tests are conducted once every 3 years
consistent with 40 CFR s. 63.10006(b) , the date of the last three stack tests, a comparison of the emission level achieved in the last three stack

tests to the 50 percent emission limit threshold required in 40 CFR

s. 63.10006(i) , and a statement as to whether there have been any operational changes since the last stack test that could increase emissions. b) Certifications of compliance, as applicable, signed by a responsible official stating:

1. “This EGU complies with the requirements in 40 CFR,

s. 63.10021(a) to demonstrate continuous compliance.” and
2. “No secondary materials that are solid waste were combusted in any
affected unit.” [40 CFR ss. 63.9984( c) and 63.10030(e)

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 31

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired D ry - Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (c) If using a PM CPMS data to measure compliance with an operating limi t in Table 4 to
S ubpart UUUUU

, The permitee shall record the PM CPMS output data for all periods when the process is operating and the PM CPMS is not out

of

- control. The permittee shall demonstrate continuous compliance by using all quality

assured hourly average data collected by the PM CPMS for all operating hours to calculate the arithmetic average operating parameter in units of the operating limit (e.g., milliamps, PM concentration, raw data signal) on a 30 operating day rolling average basis, updated at the end of each new boiler operating day. Use Equation 9 to determine the 30 boiler operating day average.

Where:

Hpv i is the hourly parameter value for hour i and n is the number of valid hourly parameter values collected over 30 boiler operating day s. [40 CFR s. 63.10021(c)]

(d) If using quarterly performance testing to demonstrate compliance with one or more applicable emissions limits in 2 to Subpart UUUUU (see I.A.7.a.), the permittee:

(i) May skip performance testing in those quarters during whic h less than 168 boiler operating hours occur, except that a performance test must be conducted at least once every calendar year. (ii) Shall conduct the performance test as defined in Table 5 to Subpart UUUUU and calculate the results of the testing in uni ts of the applicable emissions standard; and [40 CFR s. 63.10021(d)]

{continued on next page...} ( 8 ) Reporting Requirements: (a) The permittee shall submit each report in Table 8 to 40 CFR, Part 63, Subpart UUUUU that applies. If required to (or electing to ) continuously monitor Hg and/or HCl emissions, The permittee shall also submit the electronic reports required under Appendix A and/or Appendix B to Subpart UUUUU, at the specified frequency. [40 CFR s. 63.10031(a)]

(b) Unless the department has approved a different schedule for submission of reports under 40 CFR s. 63.10(a), the permittee shall submit each report semiannually and according to the following:

(i) The first compliance report shall cover the period beginning on the compliance date in I.A.7.a .(5) (the compliance date specified in 40
CFR s. 63.9984) and ending on either June 30 or December 31, whichever date is the first date that occurs at least 180 days after the specified compliance date. (ii) The first compliance report shall be postmarked or submitted electronically no later than either July 31 or January 31, whichever date is the first date following the end of the first calendar half after the specified compliance date

. (iii) Each subsequent compliance report shall cover the semiannual

re porting period from January 1 through June 30 or the semiannual reporting period from July 1 through December 31. (iv) Each subsequent compliance report shall be postmarked or submitted electronically no later than July 31 or January 31, whichever
date is the first date following the end of the semiannual reporting period. (v) The permitte may submit the semiannual compliance reports along with the reports required by condition I.XXX.1.a., instead of according to the dates in paragraphs (i) through (iv), ab ove. [40 CFR s. 63.10031(b), Table 8 to 40 CFR, Part 63, Subpart UUUUU]

(c) The compliance report shall contain the following information:

(i) The information required by the summary report located in 40 CFR s. 63.10(e)(3)(vi). (ii) The total fuel use by each affected source subject to an emission limit, for each calendar month within the semiannual reporting period, including, but not limited to, a description of the fuel, whether the fuel
has received a non

- waste determination by EPA or your basis for

co ncluding that the fuel is not a waste, and the total fuel usage amount
with units of measure. (iii) An indication of whether new types of fuel were burned during the reporting period. If new types of fuel were burned, the permittee shall
include the date o f the performance test where that fuel was in use. (iv) The date of the most recent tune

- up for each unit subject to the requirement to conduct a performance tune

- up according to 40 CFR

s. 63.10021(e), including the date of the most recent burner inspectio n if it was not done every 36 (or 48) months and was delayed until the
next scheduled unit shutdown. [40 CFR s. 63.10031(c)]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 32

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUE D)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982 (d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous pa ge...} (e) When conducting periodic performance tune

- ups of your EGU(s), as specified below, perform the first

tune

- up as part of the initial compliance demonstration. Notwithstanding this requirement, you the permittee may delay the first burner inspectio n until the next scheduled unit outage provided the requirements of 40 CFR s. 63.10005 are met. Subsequently, the permittee shall perform an inspection of the burner at least once every 36 calendar months unless the EGU employs neural network combustion op timization during normal operations in which case the permittee shall perform an inspection of the burner and combustion controls at least once every 48 calendar months.

(i) As applicable, inspect the burner and combustion controls, and clean or replace an y components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required inspection period. Repair of a burner or combustion control component requiring special order parts may be schedule d as follows: a) Burner or combustion control component parts needing replacement that affect the ability to optimize NO X and CO must be installed
within 3 calendar months after the burner inspection, b) Burner or combustion control component parts that do not affect the ability to optimize
NO X and CO may be installed on a schedule determined by the operator; (ii) As applicable, inspect the flame pattern and make any adjustments to the burner or combustion controls necessary to optimize the flame pattern.
T he adjustment should be consistent with the manufacturer's specifications, if available, or in accordance with best combustion engineering practice for that burner type; (iii) As applicable, observe the damper operations as a function of mill and/or cyclon e loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments and effecting repair to dampers, controls, mills, pulverizers, cyclones, and sensors;

{continued on next page...} ( 8 ) Repor ting Requirements: {...continued from previous page...} (d) For each excess emissions occurring at an affected source where a CMS is used to comply with that emission limit or operating limit, the permittee shall include the information required in 40 CFR

s. 6 3.10(e)(3)(v) in the compliance report specified in paragraph (c), above. [40 CFR s. 63.10031(d)]

(e) The permittee shall report all deviations as defined in 40 CFR, Part 63, Subpart UUUUU in the semiannual monitoring report required condition I.XXX.1.a. If an affected source submits a compliance report pursuant to Table 8 to to Subpart UUUUU along with, or as part of, the semiannual monitoring report required by condition I.XXX.1.a., and the compliance report includes all required information concerning deviations from any emission limit, operating limit, or work practice requirement in this subpart, submission of the compliance report satisfies any obligation to report the same deviations in the semiannual monitoring report. Submission of a compliance r eport does not otherwise affect any obligation the affected source may have to report deviations from permit requirements to the permit authority. [40 CFR s. 63.10031(e)]

(f) As of January 1, 2012, and within 60 days after the date of completing each perf ormance test, the permittee shall submit the results of the performance tests required by this subpart to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CD X) ( www.epa.gov/cdx ). Performance test data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) (see http://www.epa.gov/ttn/chief/ert/index.html ). Only data collected using those test methods on the ERT W eb site are subject to this requirement for submitting reports electronically to WebFIRE. Owners or operators who claim that some of the information being submitted for performance tests is confidential business information (CBI) must submit a complete ERT file including information claimed to be CBI on a compact disk or other commonly used electronic storage media (including, but not limited to, flash drives) to EPA. The electronic media must be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI O ffice, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Page Rd., Durham, NC
27703. The same ERT file with the CBI omitted shall be submitted to EPA via CDX as described earlier in this paragraph. The permittee shall also submit these reports, inclu ding the confidential business information, to the department in the format specified by the department. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 33

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- ( CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards f or HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b )
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (e) {... continued from previous page...}

(iv) As applicable, evaluate windbox pressures and air proportions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

- fuel
ratio and ensure tha t it is correctly calibrated and functioning properly. Such inspection may include calibrating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers to ensure that th e systems are operated as designed. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior to the next

tune

- up, should be corrected or repaired as

necessary; (vi) Optimize combusti on to minimize generation of
CO and NO X . This optimization should be consistent with the manufacturer's specifications, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners, overfire air c ontrols, concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, adjusting combustion zone temperature profiles, and add

- on controls such as SCR and SNCR; CO optimization includes burners, over fire air controls, concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, and adjusting combustion zone temperature profiles; (vii) While operating at full load or the predominantly operated l oad, measure the
concentration in the effluent stream of CO and NO X in ppm, by volume, and oxygen in volume percent,
before and after the tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments are made). You may use portable CO,
NO X and O 2 monitors for this measurement. EGU's employing neural network optimization systems need only provide a single pre

- and post

- tune

- up value rather than continual values before and afte r each optimization adjustment made by the system;

{continued on next page...} ( 8 ) Reporting Requirements: (f) {...continued from previous page...} (i) Within 60 days after the date of completing each CEMS (SO 2 , PM, HCl, and Hg) perform ance evaluation test, as defined in 40 CFR s. 63.2 and required by Subpart UUUUU, the permittee shall submit the relative accuracy test audit (RATA) data (or, for PM CEMS, RCA and RRA data) required by this subpart to EPA's WebFIRE database by using the Co mpliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). The RATA data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) (
htt

p://www.epa.gov/ttn/chief/ert/index.html ). Only RATA data compounds listed on the ERT Web site are subject to this requirement. Owners or operators who claim that some of the information being submitted for RATAs is confidential business information (CBI) shall submit a complete ERT file including information claimed to be CBI on a compact disk or other commonly used electronic storage media (including, but not limited to, flash drives) by registered letter to EPA and the same
ERT file with the CBI omitted to EPA via CDX as described earlier in this paragraph. The compact disk or other commonly used electronic storage media shall be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI Office, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Pag e Rd., Durham, NC 27703. The permittee shall also submit these RATAs to the department in the format specified by the department. The permittee shall submit calibration error testing, drift checks, and other information required in the performance evaluati on as described in 40 CFR s. 63.2 and as required in 40 CFR.

(ii) For a PM CEMS, PM CPMS, or approved alternative monitoring using a HAP metals CEMS, within 60 days after the reporting periods ending on March 31st, June 30th, September 30th, and December 3 1st, the permitee submit quarterly reports to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). The permittee shall use the appropri ate electronic reporting form in CEDRI or provide an alternate electronic file consistent with EPA's reporting form output format. For each reporting period, the quarterly reports must include all of the calculated 30

- boiler operating day rolling average v alues derived from the CEMS and PM CPMS. The permittee shall also submit these quarterly reports to the department in the format specified by the department.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 34

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- C oal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clea n Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compli ance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats

. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Con tinuous Compliance Demonstration: (e) {...continued from previous page...}

(viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in paragraphs (e)(1) through (e)(9) of this section incl uding: a) The concentrations of CO and NO X in the effluent stream in ppm by volume, and oxygen in volume percent, measured before and after an adjustment of the EGU combustion systems; b) A description of any corrective actions taken as a part
of the combu stion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally capable of using more than one type of fuel during that period; and (ix) Report the dates of the initial and subsequent tune

- ups as follows: a) If the first required tune

- up is performed as part of the initial compliance demonstration, report the date of the

tune

- up in hard copy (as specified in 40 CFR s. 63.10030) and electronically (as specifie d in 40 CFR s. 63.10031). Report the date of each subsequent tune

- up electronically (as specified in 40 CFR s. 63.10031). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

- up and all subsequent tune

- ups electronically, in accordance with 40
CFR s. 63.10031. [40 CFR s. 63.10021(e)]

(f) The permittee shall submit the reports required under 40 CFR s. 63.10031 and, if applicable, the reports require d under Appendices A and B to Subpart UUUUU. The electronic reports required by Appendices A and B to Subpart UUUUU shall be sent to the EPA electronically, as provided in 40 CFR

s. 63.10031. CEMS data (except for PM CEMS and any approved alternative monit oring using a HAP metals CEMS) shall be submitted using EPA's Emissions Collection and Monitoring Plan System (ECMPS) Client Tool. Other data, including PM CEMS data, HAP metals CEMS data, and CEMS performance test detail reports, shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool, the Compliance and Emissions Data Reporting Interface, or alternate electronic file format, all as provided for
under 40 CFR s. 63.10031. These reports shall also be
submitted to the d epartment. [40 CFR s. 63.10021(f)]

{continued on next page...} ( 8 ) Reporting Requirements: (f) {...continued from previous page...} (iii) Reports for an SO 2 CEMS, a Hg CEMS or sorbent trap monitoring system, an HCl CEMS, and any support ing monitors for such systems (such as a diluent or moisture monitor) shall be submitted using the ECMPS Client Tool, as provided for in Appendices A and B to Subpart UUUUU and 40 CFR s. 63.10021(f). The permittee shall also submit these to the department in the format specified by the department.

(iv) Submit the compliance reports required under paragraphs (c) and (d) of this condition and the notification of compliance status required under 40 CFR

s. 63.10030(e) to EPA's WebFIRE database by using the
Com pliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). the permittee shall use the appropriate electronic reporting form in CEDRI or provide an alternate electronic file consis tent with EPA's reporting form output format. The permittee shall also submit these compliance reports to the department in the format specified by the department.

(v) All reports required by 40 CFR, Part 63, Subpart UUUUU not subject to the requirements in paragraphs (f)(1) through (4) of this condition must be sent to the Administrator at the appropriate address listed in 40 CFR

s. 63.13. If acceptable to both the Administrator and the owner or operator of a source, these reports may be
submitted on elec tronic media. The Administrator retains the right to require submittal of reports subject to paragraphs (f)(1), (2), and (3) of this condition in paper format. The permittee shall also submit these compliance reports to the department in the format specifi ed by the department. [40 CFR s. 63.10031(f)]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 35

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR , Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (g) The permittee shall report each instance in which an applicable emissio ns limit or operating limit in Tables 2 through 4 to Subpart UUUUU (I.A.7.a.) was not met or a required tune

- up was not conducted. These instances are deviations from the requirements of Subpart UUUUU. These deviations shall be reported according to 40 CFR s. 63.10031. [40 CFR s. 63.10021(g)]

(h) The permittee shall keep records as specified in
40 CFR s. 63.10032 during periods of startup and shutdown. [40 CFR s. 63.10021(h)]

(i) The permittee shall provide reports as specified in
40 CFR s. 63.10031 conce rning activities and periods of startup and shutdown. [40 CFR s. 63.10021(i)]

[40 CFR s. 63.10021

, s. 285.65(13), Wis. Stats. ]

( 9 ) Continuous Compliance Demonstration

– Emissions Averaging Provision: (a) Following the compliance date, the permittee
shal l demonstrate compliance with Subpart UUUUU on a continuous basis by meeting the following: (i) For each 30

- (or 90

- ) day rolling average period, demonstrate compliance with the average weighted emissions limit for the existing units participating in the e missions averaging option as determined in 40 CFR s. 63.10009(f) and (g); (ii) For each existing unit participating in the emissions averaging option that is equipped with PM CPMS, maintain the average parameter value at or below the operating limit establ ished during the most recent performance test; (iii) For each existing unit participating in the emissions averaging option venting to a common stack configuration containing affected units from other subcategories, maintain the appropriate operating limit for each unit as specified in Table 4 to Subpart UUUUU that applies. (b) Any instance where the permittee fails to comply with the continuous monitoring requirements in paragraphs (a) of this condition is a deviation. [40 CFR s. 63.10022

, s. 285.65(13), W is. Stats. ] ( 8 ) Reporting Requirements: {...continued from previous page...}
(g) If the permittee had a malfunction during the reporting period, the compliance report must include the number, duration, and a brief description for each type of malfunction whic h occurred during the reporting period and which caused or may have caused any applicable emission limitation to be exceeded. [40 CFR s. 63.10031(g)] [40 CFR s. 63.10031

, s. 285.65(13), Wis. Stats

. ]

( 9 ) Recordkeeping Requirements: (a) The permittee shal l keep records according to the following. If required to (or electing to) continuously monitor Hg and/or HCl emissions, the permittee shall also keep the records required under Appendix A and/or Appendix B to 40 CFR, Part 63, Subpart UUUUU. (i) A copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any Initial Notification or Notification of Compliance Status or semiannual compliance report that you submitted, according to the requireme nts in 40 CFR s. 63.10(b)(2)(xiv). (ii) Records of performance stack tests, fuel analyses, or other compliance demonstrations and performance evaluations, as required in 40 CFR s. 63.10(b)(2)(viii). [40 CFR s. 63.10032(a)]

(b) For each CEMS and CPMS, the p ermittee shall keep records according to the following: (i) Records described in 40 CFR s. 63.10(b)(2)(vi) through (xi). (ii) Previous ( i.e. , superseded) versions of the performance evaluation plan as required in 40 CFR s. 63.8(d)(3). (iii) Request for alt ernatives to relative accuracy test for CEMS as required in 40 CFR s. 63.8(f)(6)(i). (iv) Records of the date and time that each deviation started and stopped, and whether the deviation occurred during a period of startup, shutdown, or malfunction or durin g another period. [40 CFR s. 63.10032(b)]

(c) The permittee shall keep the records required in Table 7 to 40 CFR, Part 63, Subpart UUUUU including records of all monitoring data and calculated averages for applicable PM CPMS operating limits to show
contin uous compliance with each emission limit and operating limit that applies to you. [40 CFR s. 63.10032(c)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 36

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standard s for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)( 1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 10 ) Establishing and Determining Compliance with a PM CPMS Operating
Limit: (a) During the initial performance test or any such subsequent performance test that demonstrates compliance with the filterable PM,
individual non

- mercury HAP metals, or total

non

- mercury HAP metals limit in I.A.7.a.(1)

, record all hourl y average output values (e.g., milliamps, stack concentration, or other raw data signal) from the PM CPMS for the periods corresponding to the test runs (e.g., nine 1

- hour average PM CPMS output values for three 3

- hour test runs). (b) Determine the operati ng limit as the highest
1

- hour average PM CPMS output value recorded during the performance test. The permittee shall verify an existing or establish a new operating limit after each repeated performance test. (c) The permittee shall operate and maintain t he process and control equipment such that the 30 operating day average PM CPMS output does not exceed the operating limit determined in paragraphs (a) and (b) of this condition

. [40 CFR s. 63.10023, s. 285.65(13), Wis. Stats. ]

( 11 ) General Provisions: The permittee is subject to the General Provisions of 40 CFR

ss. 63.1 through 63.15 as shown in Table 9 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s.
63.10040

, s. 285.65(13), Wis. Stats. ]

(12) Affirmative defense for exceedence of emission limit during m alfunction : In response to an action to enforce the standards set forth in 40 CFR s. 63.9991 the permittee may
assert an affirmative defense to a claim for civil penalties for exceedances of such standards that are caused by malfunction, as defined at 40 CFR s. 63.2. Appropriate penalties may be assessed, however, if the permittee fails to meet all burden of proving all of the requirements in the
affirmative defense. The affirmative defense shall not be available for claims for injunctive
relief. {continu ed on next page...} ( 9 ) Recordkeeping Requirements: {...continued from previous page...}
(d) For each EGU subject to an emission limit, the permittee shall also keep the following records: (i) The permittee shall keep records of monthly fuel use by each EGU,
in cluding the type(s) of fuel and amount(s) used. (ii) If combusting non

- hazardous secondary materials that have been determined not to be solid waste pursuant to 40 CFR 241.3(b)(1), the permittee shall keep a record which documents how the secondary
materia l meets each of the legitimacy criteria. If combusting a fuel that has been processed from a discarded non

- hazardous secondary material pursuant to 40 CFR 241.3(b)(2), the permittee shall keep records as to how the operations that produced the fuel satisfi es the definition of processing in 40 CFR 241.2. If the fuel received a non

- waste determination pursuant to the petition process submitted under 40 CFR 241.3(c), the permittee shall keep a record which documents how the fuel satisfies the requirements of t he petition process. (iii) For an EGU that qualifies as an LEE under 40 CFR s. 63.10005(h), the permittee shall keep annual records that document that emissions in the previous stack test(s) continue to qualify the unit for LEE status for an applicable pol lutant, and document that there was no change in source operations including fuel composition and operation of air pollution control equipment that would cause emissions of the pollutant to increase within the past year. [40 CFR s. 63.10032(d)]

(e) If elec ting to average emissions consistent with 40 CFR s. 63.10009, the permittee must additionally keep a copy of the emissions averaging implementation plan required in 40 CFR s. 63.10009(g), all calculations required under 40 CFR s. 63.10009, including daily records of heat input or steam generation, as applicable, and monitoring records consistent with 40
CFR s. 63.10022. [40 CFR s. 63.10032(e)]

(f) The permitee shall keep records of the occurrence and duration of each startup and/or shutdown. [40 CFR s. 63 .10032(f)]

(g) The permittee shall keep records of the occurrence and duration of each malfunction of an operation ( i.e. , process equipment) or the air pollution control and monitoring equipment. [40 CFR s. 63.10032(g)]

(h) The permitee shall keep recor ds of actions taken during periods of
malfunction to minimize emissions in accordance with 40 CFR

s. 63.10000(b), including corrective actions to restore malfunctioning process and air pollution control and monitoring equipment to its normal or
usual manne r of operation. [40 CFR s. 63.10032(h)]

(i) The permitee shall keep records of the type(s) and amount(s) of fuel used during each startup or shutdown. [40 CFR s. 63.10032(i)]

[40 CFR s. 63.10032

, s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 37

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control Device C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardou s Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b) s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Reco rdkeeping, and Monitoring: (12) Affirmative defense for exceedence of emission limit during
malfunction : {...continued from previous page...} (a) To establish the affirmative defense in any action to enforce such a limit, the permittee shall timely meet the notification requirements in paragraph (b) of this condition, and must prove by a preponderance of
evidence that:

(i) The excess emissions:

a) Were caused by a sudden, infrequent, and unavoidable failure of air pollution control and monitoring equipment, process equipment, or a process to operate in a normal or usual manner,
and b) Could not have been prevented through careful planning, proper design or better operation and maintenance practices; and c) Did not stem from any activity or event that could ha ve been foreseen and avoided, or planned for; and d) Were not part of a recurring pattern indicative of inadequate design, operation, or maintenance; and (ii) Repairs were made as expeditiously as possible when the applicable emission limitations were bein g exceeded. Off

- shift and overtime labor were used, to the extent practicable to make these repairs; and (iii) The frequency, amount and duration of the excess emissions (including any bypass) were minimized to the maximum extent practicable during periods of such emissions; and (iv) If the excess emissions resulted from a bypass of control equipment or a process, then the bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; and (v) All possible steps were taken to min imize the impact of the excess emissions on ambient air quality, the environment and human health; and (vi) All emissions monitoring and control systems were kept in operation if at all possible, consistent with safety and good air pollution control practi ces; and (vii) All of the actions in response to the excess emissions were documented by properly signed, contemporaneous operating logs;
and (viii) At all times, the affected source was operated in a manner consistent with good practices for minimizing em issions; and (ix) A written root cause analysis has been prepared, the purpose of which is to determine, correct, and eliminate the primary causes of the malfunction and the excess emissions resulting from the malfunction event at issue. The analysis shall also specify, using best monitoring methods and engineering judgment, the amount of excess emissions
that were the result of the malfunction.

{continued on next page...} ( 10 ) Records (Form and Retention): (a) Records must be in a form suitable and readily available for expeditious review, according to 40 CFR

s. 63.10(b)(1). (b) As specified in 40 CFR s. 63.10(b)(1), the permitee shall keep each record for 5 years following the date of each occurrence, measurement, maintenance, corrective action, report, or record. (c) The permittee shall keep each record on site for at least 2 years after the date of each occurrence, measurement, maintenance, corrective action, report, or record, according to § 63.10(b)(1). The permittee may keep the records off site for the remaining 3

years. [40 CFR s. 63.10033

, s. 285.65(13), Wis. Stats.]

( 11 ) Emissions Averaging to Comply with 40 CFR, Part 63, Subpart UUUUU: The permittee may use the emission averaging described in 40 CFR s. 63.10009 to comply with Subpart UUUUU, if al l the criteria in that section are met. [40 CFR s. 63.10009

, s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 38

A. Stack S01, Boiler B01, Control Device C01

– Weston Unit 1

- Coal Fired Dry

- Bottom Boiler Rated at 858 mmBtu/hr

- (CONTINUED)

Stack S02, Boiler B02, Control D evice C02

– Weston Unit 2

- Coal Fired Dry

- Bottom Boiler Rated at 1000
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Elec tric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.A.7.a.(5). [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b) s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (12) Affirmative defense for exceedence of emission limit during
malfunction : {...continued from previous pag e...} (b) Notification. When experiencing an exceedance of its emission limit(s) during a malfunction, the permittee shall notify US EPA and the department by telephone or facsimile (FAX) transmission as soon as possible, but no later than two business days after the initial occurrence of the malfunction or, if it is not possible to determine within two business days whether the malfunction caused or contributed to an exceedance, no later than two business days after the permittee knew or should have known th at the malfunction caused or contributed to an exceedance, but, in no event later than two business days after the end of the averaging period, if it wishes to avail itself of an affirmative defense to civil penalties for that malfunction. When seeking to assert an affirmative defense, the permittee shall also submit a written report to US EPA and the department within 45 days
of the initial occurrence of the exceedance of the standard in 40 CFR s. 63.9991 to demonstrate, with all necessary supporting
docum entation, that it has met the requirements set forth in paragraph (a) of this condition. The permittee may seek an extension of this deadline for up to 30 additional days by submitting a written request to US EPA and the department before the expiration of the 45 day period. Until a request for an extension has been approved by US EPA and the department, the permittee is subject to the requirement to submit such report within 45 days of the initial occurrence of the
exceedance.

[40 CFR s. 63.10001, s. 285.6 5(13), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 39

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48 mmBtu/hr (Combustion Engineering Radiant type water tube boiler)

– Initially Operated 12/1981 Additional Fuels : Nat ural Gas, Distillate Fuel Oil, and Alternative Fuels. Controlled by : Baghouse

Pollutant: 1. Particulate Matter Emissions

a. Limitations: (1) (a) Emissions from Boiler B03 may not exceed 0.10 pounds per million BTU of heat input

. (b) Emissions fr om Boiler B03 may not exceed 342.3 pounds/hour in any hour. 21
[s. NR 440.19(3)(a)1., Wis. Adm. Code, s. 285.65(3), Wis. Stats., Permit EPA

- 5

- 77

- A

- 4, condition 7a, 06

- SDD

- 102

, 40 CFR s. 60.42(a)(1) ]

(2) See also condition I.B.7.a.(1). b. Compliance Dem onstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire: (a) the following primary and backup fuels in boiler B03: (i) coal, (ii) natural gas, and (iii) distillate fuel oil. (b) the following alternate fuels 22 in boiler B03: (i) ash (partially burned coal); and (ii) refuse derived fuel (municipal)

. [s, NR 407.09(4)(a), Wis. Adm. Code, ss. 285.65(3) and 285.63(1)(a), Wis. Stats.

, 06

- SDD

- 102]

(2) The permittee shall operate a baghouse to control particulate

matter emissions from the boiler whenever the boiler is in operation and solid fuel is being fired, with the exception of periods of normal start

- up and shut

- down as defined in condition I.B.2.b.(1). [ss. NR 407.09(4)(a) and NR 415.03, Wis. Adm. Code, s. 285.65( 3), Wis. Stats.

, 06

- SDD

- 102]

(3) The permittee shall perform compliance emission testing of particulate matter emissions from this boiler to demonstrate compliance with the particulate matter emission limit in I.B.1.a.(1), as follows: (a) Testing shall be conducted every 24 months as long as the permit remains valid. (b) Each biennial test of particulate matter emissions shall be performed within 90 days of the anniversary date of the previous test or within 90 days of an alternate date specified by
the De partment in writing. (c) The permittee may request and the Department may approve a waiver from the required biennial testing provided the results of the most recently completed biennial test demonstrate that particulate matter emissions are 50 percent or less of the applicable limitation in condition I.B.1.a.(1); (d) The permittee shall repeat the compliance emissions test while firing refuse waste, within 60 days of first firing refuse waste. This testing shall be completed prior to firing the
alternate fuel(s) on a regular basis. ( e ) The tests shall be conducted in accordance with I.XXX.3.a. [ss. NR 439.07, NR 439.075(2)(c) and NR 439.075(3)(b), Wis.
Adm. Code

, 06

- SDD

- 102] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate m atter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, 5I, or 17 including backhalf (Method 202), or any other method approved by the Department in writing. [s. NR 439.06(1), and (1m), Wis. Adm. Code]

(2) The permittee shall retain copies of the results of the compliance emission tests specified in I.B.1.b.(3). [s. NR 439.04(1)(a), Wis. Adm. Code

, 06

- SDD

- 102]

(3) The permittee shall keep records of the type and amount of fuel burned in this boiler on a monthly bas is. [s. NR 439.04(1)(d), Wis. Adm. Code

, 06

- SDD

- 102]

(4) (a) The permittee shall record the parameters listed in I.B.1.b.(4) continuously whenever the boiler is operating. (b) In the event of a malfunction or failure of the continuous pressure different ial monitoring system, the permittee shall record the pressure drop once every eight hours of source operation or once per day while the unit is operating, whichever yields the greater number of measurements, until the continuous monitor is returned to

ser vice. (c) The permittee shall maintain records of any investigative and corrective action taken as a result of an alarm indicating a differential pressure drop reading outside the indicator range in condition I.B.1.b.(10)(b), that
include: (i) date and time of the alarm; (ii) a description of the investigative actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code] (d) The permittee shall maintain records of any investigative and corrective action taken as a result of an alarm indicating a one

- hour average opacity reading that exceeds the range in I.B.2.b.(10)(e), that include: (i) date and time of the alarm; (ii) a description of the investigative actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code] [s. NR 439.055(5), Wis. Adm. Code, 06

- SDD

- 102]

21 This limit is also e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

22 See section I.B.6. of this permit for restrictions on the amount of alternate fuels that can be fired.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 40

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 1. Particulate Matter Emissions

- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (4) (a) The permittee shall continuously monitor the differential pressure drop across the baghouse. (b) In the event of a malfunction or f ailure of the continuous pressure differential monitoring system, the permittee shall monitor and record the pressure drop once every eight hours of source operation or once per day while the unit is operating, whichever yields the greater number of

measur ements, until the continuous monitor is returned to service. [ss. NR 439.055(1)(a), (2)(b), and (5), Wis. Adm. Code and 06

- SDD

- 102]

(6) The permittee shall perform periodic internal inspections of the baghouse to ensure that the control equipment is oper ating properly. The time interval between inspections may not exceed 13,140 operating hours unless written approval from the Department is granted allowing for a greater interval. Such a request may only be granted if the applicant demonstrates that such an interval is needed to maintain a stable electric power supply. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code and 06

- SDD

- 102]

(7) The permittee shall calibrate instruments used for measuring the baghouse operational parameters identified in I.B.1.b.(4) onc e every 13,140 hours of operation, unless an alternative schedule is approved by the department in writing. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code]

(8) The permittee shall perform periodic inspections of the boiler to ensure optimum boiler performance using a qualified inspector. Specific items that should be inspected include, but are not limited to, firebox, boiler tubes, refractory, burner conditions, boiler backpass, boiler cleanliness and overall boiler condition. The time interval between inspec tions may not exceed 13,140 operating hours, unless the department approves a request for an extension in writing. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code and 06

- SDD

- 102]

(9) Partially burned coal requirements : (a) The total amount of partially burned co al that is received from Rhinelander Paper Mill (RPM) (fid # 744008100) for combustion in boilers B01, B02 and B03 in any calendar year may not exceed 10,400 tons. (b) The total amount of partially burned coal that is received from Wausau

Mosinee Mill (fi d # 737009570) for combustion in B01, B02, and B03 in any calendar year may not exceed 10,000 tons. 23 (c) The permittee shall obtain written approval from the department, prior to burning partially burned coal from other sources. (d) The permittee shall pe rform an annual elemental metal analysis of the partially burned coal from facilities fid#s 744008100 and 737009570 (or other ash as approved under I.B.1.b.(9)(c) prior to or within 90 days after the fuel is first burned in any of the boilers, in each cale ndar year. Elemental metal analysis is required once in any calendar year that partially burned coal is fired in any of the boilers. [ss. 285.65(3) and (10), Stats., s. NR 407.09(4)(a)3.b., Wis. Adm. Code and
06

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- 102] (5) The permittee shall keep recor ds of: (a) the date, time, and initials of the person performing the inspections required by I.B.1.b.(6); (b) a list of the items inspected; (c) any maintenance or repairs performed as a result of these inspections; (d) the operating hours of the boiler si nce the last inspection ; and (e) the date, time and initials of the person performing the cal ibrations required by I.B.1.b.(6 ). [s. NR 439.04(1)(d), Wis. Adm. Code, 06

- SDD

- 102]

(6) The permittee shall keep records of: (a) the date, time, and initials of t he person performing the inspections required by I.B.1.b.(8); (b) a list of the items inspected; (c) any maintenance, repairs or adjustments performed as a result of these inspections. [s. NR 439.04(1)(d), Wis. Adm. Code, 06

- SDD

- 102]

(7) The permittee sh all keep records of the
amount of ash received for combustion from
facilities FID #s 744009100 and 737009570 monthly and in a calendar year in tons. [s. NR 439.04(1)(d), Wis. Adm. Code, 06

- SDD

- 102]

(8) The permittee shall keep records to demonstrate compl iance with I.B.1.b.(9)(d). [s. NR 439.04(1)(d), Wis. Adm. Code and 06

- SDD

- 102]

23 The company names associated with these fid#s may be changed a nd still maintain compliance with this condition.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 41

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 1. Particulate Matte r Emissions

- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (10) Compliance Assurance Monitoring (CAM) Requirements: Boiler B03 is a pollutant

specific emissions unit for particulate matter emissions and is subject to the CAM requirements of Part 64 CFR. As such the boiler is subject to the CAM requirements in Part IV and section I.XXX.9. of this permit, and as follows: (a) Whenever the boiler is operating, the permittee shall monitor differential pressure drop across the fabric filter baghouse system as an indicator of control equipment performance, using electronic pressure transmitters located at the inlet and the outlet of the baghouse.; (b) The indicator range for differential pressure drop across the baghouse controlling B03 is 2.0 to 10.0 inches of water; (c) The permittee shall monitor opacity as a secondary indicator of baghouse performance using a continuous opacity monitoring system (COMS) that meets the requirements I.B.2.b.(2) and I.B.2.c.(2) ; (d) The permittee shall use the data collected by the COMS to calculate one

- hour average opacities for the boiler; (e) The indicator range for visible emissions from B03 is 10% opacity or less based on a

one

- hour average; (f) An excursion is:

(i) a differential pressure drop reading outside the indicator range in condition I.B.1.b.(10)(b); OR (ii) a one

- hour average opacity reading that exceeds the range in I.B.2.b.(10)(e). (g) The permittee shall operate an alarm system to notify the operator if th e differential pressure drop across the baghouse is outside the range specified in conditions I.B.1.b.(10)(b). If an alarm occurs, the permittee shall take appropriate investigative and
corrective action. (h) The permittee shall operate an alarm system t o notify the operator if visible emissions exceed the opacity specified in conditions I.B.1.b.(10)(e). If an alarm occurs, the permittee shall take appropriate investigative and corrective action. (i) The quality improvement plan (QIP) threshold is reache d when excursions occur for more than 5% of the boiler’s operating time in a six month reporting period; (j) The permittee shall operate the COMS in accordance with 40 CFR ss. 64.7 and 64.8 as detailed in conditions I.XXX.a.(2) and (4). [s. 285.65(13), Wis . Stats., ss. NR 407.09(4)(a)1. and 3.b. and s. NR 439.0 5 5(5), Wis. Adm. Code, and 40 CFR ss. 64.2, 64.3, 64.6, 64.7, and 64.8 and 06

- SDD

- 102]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 42

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423 .48
mmBtu/hr

- (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations: (1) The permittee may not cause to be discharged to the atmosphere any gases which exhibit greater than 20% opacity except
for one

- 6 minute period per hour of not more than 27% opacity. This opacity standard applies at all times except periods of startup, shutdown, or malfunction. [ss. NR 440.11(3), NR 440.19(3)(a)2. and NR 431.05, Wis. Adm. Code

, 06

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- 102

, 40 CFR s. 60.42(a)(2 ) ]



### (2) 20% opacity or number 1 on the Ring lemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 24 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) To minimize v isible emissions, the permittee shall start

- up and shut

- down the boiler according to the following: 25
(a) Normal Start

- up Sequence: (i) Place the baghouse in service and ensure continuous opacity monitor is operational, or in accordance with an alternativ e monitoring method approved in writing by the Department. (ii) Start the draft fan(s) (iii) Preheat boiler firing natural gas. (iv) Introduce coal to the combustion chamber while continuing to operate the gas burners as the coal begins to ignite. (v) Continue the use of the gas burner during startup to achieve a
stable coal fire. (vi) Normal start

- up is complete upon achieving a stable fire and a minimum generator load of 150 MW. 26

(b) Normal Shut

- down Sequence: (i) Reduce generator load below 150 M W with the intent of removing the unit from service. (ii) Discontinue coal introduction to boiler and cease fuel firing. (iii) Discontinue operation of the draft fans. (iv) Discontinue operation of baghouse. (v) Normal shut

- down is complete after item (iv) or a start

- up of
the boiler commences. [s. NR 407.09(4)(a), Wis. Adm. Code and 06

- SDD

- 102]

(2) The permittee shall calibrate, maintain and operate a continuous opacity monitoring system for the measurement of opacity from stack S03, in accordance wit h the performance specifications in 40 CFR Part 75, Appendices A to I. [ss. NR 439.09(1), NR 439.095(1)(f) and (6) and 440.19(6)(a), Wis.
Adm. Code

, 06

- SDD

- 102

, 40 CFR s. 60.45(a) ] (1) Reference Test Method for Visible Emissions:
Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or other method approved by the Department. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The continuous opacity monitor required by I.B.2.b.(2) shall complete one cycle of sam pling and analyzing for
each successive 10

- second period and one cycle of data recording for each successive 6

- minute period. [ss. NR 439.09(9)(a), Wis. Adm. Code and 06

- SDD

- 102]

(3) The permittee shall submit quarterly excess emission reports to the Depa rtment within 30 days following the end of each calendar quarter in accordance with I.XXX.2.a. [ss. NR 439.09(10) and 440.19(6)(g), Wis.
Adm. Code

, 06

- SDD

- 102

, 40 CFR s. 60.45(g) ]

(4) Unless otherwise specified by the Department, periods
of excess visible emissions shall be any 6 minute period during which the average opacity exceeds the limitation in I.B.2.a.(1) except as allowed under s. NR 440.19(6)(g)1., Wis. Adm. Code. [ss. NR 439.09(10)(b) and NR 440.19(6)(g)1., Wis. Adm. Code

, 06

- 102

- SDD

, 40 CFR
s.6 0.45(g)(1) ]

24 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one da y.

25 The following start

- up and shut

- down sequence contains a summary of steps to limit visible e missions.

26 All values are gross MW. The normal start

- up sequence from first coal fire to stable coal fire is generally less than 12 hours
in duration.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 43

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 3. Nitrogen Oxides

a. Limitations: (1) Emissions may not exceed: (a) 0.70 pound pe r million Btu averaged over any 3 hour period

, and (b) 2,396.4 pounds/hour averaged over any 3 hour period. 27 [ss. 285.63(1)(b), 285.65(3) and (7), Wis. Stats., s. NR 440.19(5)(a)3., Wis. Adm. Code

, 06

- SDD

- 102

, 40 CFR s. 60.44(a)(3) ]

(2) Acid Rain Requir ements: Boiler B03 is an Affected Acid Rain Unit subject to Acid Rain Requirements. As such the permittee shall comply with the applicable requirements included in the Acid Rain Portion of the Operation Permit in Section
I.ZZZ.

(3) Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR) Requirements: Boiler B03 is subject to the NOx

- Annual and the NOx

– Ozone Season CAIR requirements. As such, the permittee shall comply with the CAIR requirements as
outlined in section I.XXX.8. and i n the CAIR Permit Application (for sources subject to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit and 40 CFR 97.121, 97.122, 97.221, 97.222, 97.321 and 97.322

. OR alternately, when in effect, comply with the Cross

- State Air Pollution Rule requirements, as applicable, as required in section I.XXX.8. b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall
calibrate , maintain and operate a continuous monitoring system for the measurement of nitrogen oxides from stack S03, in accordance with the performance specifications in 40 CFR Part 75, Appendices

A to I. 28 [ss. NR 439.09(2), and NR 439.095(1)(f) and (6),
Wis. Adm . Code and 06

- SDD

102] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever nitrogen oxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 7 or other method approved by the Department. [s. NR 439.06(6), W is. Adm. Code]

(2) The continuous nitrogen oxides monitor required by I.B.3.b.(1) shall perform sampling, analyzing, and data recording as follows: (a) complete one cycle of sampling, analyzing, and data recording for each successive
15

- minute period. (b) the values recorded shall be averaged hourly. (c) hourly averages shall be computed from 4 data points equally spaced over each 1 hour period, except during periods when calibrations, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separated by a minimum of 15 minutes. (d) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration o f 14.0 percent oxygen may be substituted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F Section 3.3.4.1. [s. NR 439.09(9)(b), Wis. Adm. Code and 06

- SDD

- 102]

(3) The permittee shall submit quarterly excess emission reports to the Department within 30 days following the end of each calendar quarter. [s. NR 439.09(10), Wis. Adm. Code and 06

- SDD

- 102]

(4) Excess emissions for nitrogen oxides are any 3 hour rolling average during which the average nitrogen oxide emissions exceed the emission limitation in I.B.3.a.(1). Fo r purposes of reporting exceedances on the basis of a 3

- hour rolling average, any hourly average may be included in only one 3 hour period. [s. NR 440.19(6)(g)3., Wis. Adm. Code

, 06

- SDD

- 102

, 40 CFR s. 60.45(g)(3) ]

27 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

28 The permittee is exempt from the biennial nitrogen oxide compliance te sts required by ss. NR 439.075(4 ) Wis. Adm. Code provided that they operate a con tinuous nitrogen oxide monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code. [s. NR 439.075(4)(a)2), Wis. Adm. Code and 06

- SDD

- 102 ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 44

B. Stack S03, Boiler B03, Control De vice C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 4. Sulfur Dioxide

a. Limitations: (1) Emissions may not exceed: (a) 1.2 pounds per million Btu averaged over any 3 hour period; and (b) 4,108.2 pounds/hour averaged over any 3 hour period. 29 [ss. 285.63(10(b), 285.65(3) and (7), Wis. Stats., s. NR 440.19 (4) (a)2., Wi s. Adm. Code, Permit EPA

- 5

- 77

- A

- 4, condition 7a,
06

- SDD

- 102

, 40 CFR s. 60.43(a)(2) ]

(2) Acid Rain Requirements: Boiler B03 is an Affected Acid Rain Unit subject to Acid Rain Requirements. As such the permittee shall comply with the applicable requirements included in the Acid Rain Portion of the Operation Permit in Section
I.ZZZ.

(3) Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR) Requirements: Boiler B03 is subject to the SO2 CAIR requirements. As such, the permittee shall comply with the CAIR requirements as outlined in section I.XXX.8. and in the CAIR Permit Application (for sources subject to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit and 40 CFR 97.121, 97.122, 97.221, 97.222, 97.321 and
97.322. OR alternately, when in effect, comply with the Cros s

- State Air Pollution Rule requirements, as applicable, as required
in section I.XXX.8. b. Compliance
Demonstration: c. Test Methods, Recordkeeping, and Monitoring:

(1) The permittee shall calibrate,
maintain and operate a continuous monitoring system for the
measurement of
sulfur dioxide from stack S03,
in accordance
with the performance specifications in 40 CFR Part 75, Appendices A to

I. 30 [ss. NR 439.09(2) and
NR 439.095(1)(f) and (6), Wis.
Adm. Code and
06

- SDD

- 102] (1) Reference Test Method for Sul fur Dioxide Emissions: Whenever sulfur dioxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 6 or any other method approved by the Department in writing. [s. NR 439.06(2), Wis. Adm. Code]

(2) The continuous sulfur dioxide monitor required by I.B.4.b.(1) shall perform sampling, analyzing, and data recording as follows: (a) complete one cycle of sampling, analyzing, and data recording for each successive 15

- minute period. (b) the values recorded shall be averaged hour ly. (c) hourly averages shall be computed from 4 data points equally spaced over each 1 hour period, except during periods when calibrations, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separated by a minimum of 15 minutes. (d) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substituted fo r the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as descri bed in 40 CFR Part 75 Appendix F Section 3.3.4.1. [s. NR 439.09(9)(b), Wis. Adm. Code and 06

- SDD

- 102]

(3) The permittee shall submit quarterly excess emission reports to the Department within 30 days following the end of each calendar quarter. [s. NR 43 9.09(10), Wis. Adm. Code and 06

- SDD

- 102]

(4) Excess emissions for sulfur dioxide are any 3 hour rolling average during which the average sulfur dioxide emissions exceed the emission limitation in I.B.4.a.(1). For purposes of reporting exceedances on
the ba sis of a 3

- hour rolling average, any hourly average may be included in only one 3 hour period. [s. NR 440.19(6)(g)2., Wis. Adm. Code

, 06

- SDD

- 102

, 40 CFR s. 60.45(g)(2) ]

29 This limit is also e s tablished in the permit because the source was reviewed wit h this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

30 The permittee is exempt from the biennial sulfur dioxide compliance tests required by ss. NR 439.075(2)(a)2., and (3)(b),
Wis. Adm. Code provided that they operate a continuous sulfur dioxide monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code. [s. NR 439.075(4)(a)2., Wis. Adm. Code and 06

- SDD

- 102 ] The permittee is exempt from the peri odic fuel sampling and analysis requirements of s. NR 439.085(2), Wis. Adm. Code provided they operate a continuous sulfur dioxide emission monitor that meets the performance specification requirements of s

. NR 439.09, Wis. Adm. Code. [s. NR 439.085(1)(c) , Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 45

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 5. Carbon Monoxide (CO)

a. Limitations: (1) Best Available Control Technology (BACT) : Emissions may not exceed: (a) 350 ppmvd corrected to 3% oxygen in any hour averaged over any 24

- hour period (b) 250 ppmvd corrected to 3% oxygen in any month averaged over any 12

- month period [s. NR 405.08, Wis. Adm. Code and
06

- SDD

- 102] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall calibra te, maintain and operate a continuous monitoring system for the measurement of carbon monoxide emissions from stack S03, in accordance with the performance specifications in s. NR 439.09(4), Wis. Adm. Code. [ss. NR 405.08, NR 439.09(4), NR 439.095(1)(f), Wis.
Adm. Code and 06

- SDD

- 102]

(2) Compliance with the emission limitations in I.B.5.a.(1)(a)&(b) shall be determined using only CEM readings taken while the boiler is actually operating. Periods
when the boiler is non

- operational shall not be used to
d etermine compliance with either of the emission limitations. [s. NR 405.08, Wis. Adm. Code and 06

- SDD

- 102] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever carbon monoxide emission testing is required, the permittee shall use U.S. EPA Met hod 10 or any other method approved by the Department in writing. [s. NR 439.06(4)(a), Wis. Adm. Code]

(2) The continuous carbon monoxide monitor required by I.B.5.b.(1) shall perform sampling, analyzing, and data recording as follows: (a) complete one cy cle of sampling, analyzing, and data recording for each successive 15

- minute period. (b) the values recorded shall be averaged hourly. (c) hourly averages shall be computed from 4 data points equally spaced over each 1 hour period, except during periods
wh en calibrations, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separated by a minimum of 15
minutes. (d) When calculating hourly emissions in ppmvd, a minimum

c oncentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substituted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide
concentration is less than 5. 0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F
Section 3.3.4.1. [s. NR 439.09(9)(b), Wis. Adm. Code and 06

- SDD

- 102]

(3) The permittee shall submit quarte rly excess emission reports to the Department within 30 days following the end of each calendar quarter. [s. NR 439.09(10), Wis. Adm. Code
and 06

- SDD

- 102]

(4) Excess emissions for carbon monoxide are defined as: (a) any 24 hour rolling average during whi ch the average
carbon monoxide emissions exceed the emission limitation in
I.B. 5 .a.(1)(a). (b) any month in which the 12

- month average carbon
monoxide emissions exceed the emission limitation in
I.B. 5 .a.(1)(b). [s. NR 439.06(4)(b), Wis. Adm. Code and 06

- SD D

- 102]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 46

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 6. * Hazardous Air Contaminants Regulated by ch. NR 445, Wis. Adm. Code

a. Limitations: ( 1) * Except as provided in s. NR 445.07(5), Wis. Adm. Code, the following requirements apply 31 :
(a) * The permittee may not cause, allow or permit emissions of a hazardous air contaminant listed in Table A of s. NR 445.07

, Wis. Adm. Code, in such quantity o r concentration or for such duration as to cause an ambient air concentration of the contaminant off the source property that exceeds the concentration in column (g) of Table A for the contaminant. [s. NR 445.07(1)(a), Wis. Adm. Code]

(b) * If a hazardous air contaminant for which a control requirement is identified in column (i) of Table A of s. NR 445.07, Wis. Adm. Code, is emitted in a quantity greater than the applicable amount listed in column (f) 32 of Table A, the permittee
shall control emissions of the contaminant to a level identified in column (i) of the table, according to the applicable compliance requirements of s. NR 445.08, Wis. Adm. Code. [s. NR 445.07(c), Wis. Adm. Code]

(2) * The permittee shall achieve compliance with the emission limita tions and control requirements of I. B .6.a.(1) for each hazardous air contaminant by doing one or any combination of the following:

(a) * Limiting non

- exempt, potential to emit emissions to less than the applicable thresholds in column (f) of Table A of s. NR 445.07, Wis. Adm. Code. 33 [s. NR 445.08(2)(a), Wis. Adm. Code]

(b) * Limiting the quantity, concentration or duration of non

- exempt, potential to emit emissions of each hazardous air contaminant that has a standard expressed as an ambient air concentrat ion in Table A of s. NR 445.07, Wis. Adm. Code so that the ambient air concentration off the source property is less than the concentration allowed under column (g) of Table A. [s

. NR 445.08(2)(b), Wis. Adm. Code] (c) * Limiting the quantity, concentratio n or duration of non

- exempt, potential to emit emissions of each hazardous air contaminant with a control requirement in column (i) of Table A of s. NR 445.07, Wis. Adm. Code having a unit risk factor established by either the EPA or the California air res ources board, so as not to cause an ambient air concentration off the source property that results in an inhalation impact greater than 1 x 10 - 6 (as determined by the equation in s. NR 445.08(2)(c), Wis. Adm. Code). [s, BR 445.08(2)(c), Wis. Adm. Code]

b . Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) * To demonstrate compliance with conditions I.B.6.a.(1) and (2), the use of alternate fuels in boiler B03 may not exceed the following rates: (a) Refuse Derived Fuel Usage Limitations: (i) 3.09 tons per hour; and (ii) 13,889 tons during each 12 consecutive month period. [s. NR 445.08, Wis. Adm. Code (1) * The permittee shall keep the following records: Refuse Derived Fuel: (a) The amount of refuse derived fuel combusted in B03 in tons per hour; (b) The amount of refuse derived fuel combusted in B03 during each calendar month, in tons per month; (c) The amount of refuse derived fuel combusted in B03 totaled for each 12 consecutive month period, in tons

.

31 HAP emissions from natural gas and distillate fuel oil combustion are exempt since they are group 1 virgin fossil fuels, pursuant to s. NR 445.07(5)(a), Wis. Adm. Code. HAP emissions from coal combustion are exempt because coal is a g roup 2 virgin fossil fuel and the boiler stacks meet the downwash minimization stack height criteria pursuant to s. NR 445. 07(5)(b)

, Wis. Adm. Code. The conditions in this section of the permit apply to hazardous air contaminant emissions generated by th e combustion of alternate fuels in boiler B03.

32 The stack (S03) exhausting boiler B03 is greater than 75 feet in height. The stack is an unobstructed discharge point, exhausting emissions within 10 degrees of vertical as required by s. NR 445.07(6)(a), Wis. Adm. Code.

33 The boiler meets the requirements of s. NR 445.07(6)(a) and (b), Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 47

B. Stack S03, B oiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 6. * Hazardous Air Contaminants Regulated by ch. NR 445, Wis. Adm. Code

- {CONTINUED} b. Compliance Demonstration: c

. Test Methods, Recordkeeping, and Monitoring: (2) Partially burned coal requirements : (a) The total amount of partially burned coal that is received from Rhinelander Paper Mill (RPM) (fid # 744008100) for combustion in boilers B01, B02 and B03 in any ca lendar year may not exceed 10,400 tons. (b) The total amount of partially burned coal that is received
from Wausau

- Mosinee Mill (fid # 737009570) for combustion in B01, B02, and B03 in any calendar year may not exceed 10,000 tons. 34 (c) The permittee shal l obtain written approval from the department, prior to burning partially burned coal from other

sources. (d) The permittee shall perform an annual elemental metal analysis of the partially burned coal from facilities fid#s 744008100 and 737009570 (or othe r ash as approved under I.B.6.b.(2)(c) prior to or within 90 days after the fuel is first burned in any of the boilers, in each calendar year. Elemental metal analysis is required once in any calendar year that partially burned coal is fired in any of the boilers. [ss. 285.65(3) and (10), Stats., s. NR 407.09(4)(a)3.b., Wis.
Adm. Code and 06

- SDD

- 102] (2) To demonstrate compliance with I.B.6.b.(2), the permittee shall keep records of the amount of ash received for
combustion from facilities FID #s 744009100 and 737009570 monthly and in a calendar year in tons. [s. NR 439.04(1)(d),
Wis. Adm. Code and 06

- SDD

- 102]

(3) The permittee shall keep records to demonstrate compliance with I.B.6.b.(2)(d). [s. NR 439.04(1)(d), Wis.
Adm. Code and 06

- SDD

- 102]

34 The company names associated with these fid#s may be changed and still maintain compliance with this condition.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 48

B. Stac k S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: National Emission Standards for HAPs (NESHAP): Coa l

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU. The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5) [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63. 9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.]

a. Limitations: (1) For boiler B0 3 , the permittee shall comply with ONE of the following: (a) Filterable particulate matter may not exceed: 0.03 lbs/mmBtu or 0.3 lb s/MWh gross electric output; OR (b) Total non

- Hg HAP metals may not exceed: 0.00005 lbs/mmBtu or 0.5 lbs/GWh; OR (c) Individual Metal HAP metals may not exceed all of the following: (i) Antimony (Sb): 0.8 lbs/TBtu or 0.008 lbs/GWh; (ii) Arsenic (As): 1. 1 lbs/TBtu or 0.02 lbs/GWh; (iii) Beryllium (Be): 0.2 lbs/TBtu or 0.002 lbs/GWh; (iv) Cadmium (Cd): 0.3 lbs/TBtu or 0.003 lbs/GWh; (v) Chromium (Cr): 2.8 lbs/TBtu or 0.03 lbs/GWh; (vi) Cobalt (Co): 0.8 lbs/TBtu or 0.008 lbs/GWh; (vii) Lead (Pb): 1.2 l bs/TBtu or 0.02 lbs/GWh; (viii) Manganese (Mn): 4.0 lbs/TBtu or 0.04 lbs/GWh; (ix) Nickel (Ni): 3.5 lbs/TBtu or 0.04 lbs/GWh; and (x) Selenium (Se): 5.0 lbs/TBtu or 0.06 lbs/GWh. [40 CFR s. 63.9991(a)(1) and 40 CFR Part 63, Subpart UUUUU, Table 2, condi tion 1.a.

, s. 285.65(13), Wis. Stats

. ]

(2) For boiler B0 3 , the permittee shall comply with ONE of the following: (a) Hydrogen chloride (HCl) emissions may not exceed: 0.002 lbs/mmBtu or 0.02 lbs/MWh; OR (b) Sulfur dioxide (SO2) emissions may not exceed: 0.2 lbs/MMBtu or 1.5 lbs/MWh. (c) The alternate SO 2 limit in (b) shall only be used if the EGU: ( i ) Has a system using wet or dry flue gas desulfurization technology and SO 2 continuous emissions monitoring system (CEMS) installed on the unit; and ( ii) T he wet or dry flue gas desulfurization technology installed on the unit is operated consistent with 40 CFR

s. 63.10000(b) , at all times

. [40 CFR s s . 63.9991(a)(1) and (c), and 40 CFR Part 63, Subpart UUUUU, Table 2, condition 1.b.

, s. 285.65(13), Wis. Stat s

. ]

(3) For boiler B0 3 , mercury emissions may not exceed: 1.2 lbs/TBtu or 0.013 lbs/GWh. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 2, condition 1.c.

, s. 285.65(13), Wis. Stats

. ]

(4) The emission limits ( I. B .7.a.(1)

- (3) ) and o perating limits ( I. B .7.b.(4) ) in this section apply at all times except during periods of startup and shutdown; however, the permittee is required to meet the work practice requirements in conditions
I. B .7.b. (3) during periods of startup or shutdown

. [ 40 CFR s. 63.10000(a)

, s. 285.65(13), Wis. Stats

. ]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 49

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollut ants Regulated by the Clean Air Act: National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU. The permittee shall comply with the requirements of this section no later tha n the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.]

a. Limitations:
{...Continued from previous page...} (5) The original complian ce date for the requirements of this section is April 16, 2015. The department approved an extension of the compliance date to April 16, 2016 provided the following terms and conditions are met: 35
(a) The extension to April 16, 2016 is allowed in order to ins tall and achieve system design performance for a multi

pollutant control technology, Regenerative Activated Coke Technology (ReACT) for boiler B03. (b) The department is granting extension of the compliance date until April 16, 2016. The request cites the fol lowing current project schedule: (i) June 17, 2013

– Acquisition of construction permit from department. (ii) October 3, 2013

– Groundbreaking for ReACT equipment installation. (iii) April 22, 2016

– Hot commissioning of system to meet minimum performance standards. (iv) June 1, 2016

– Commercial operation date. (v) June 1

– December 31, 2016

– Continued activated coke conditioning to achieve design performance
standards. (vi) December 31, 2016

– Final compliance with 40 CFR Part 63, Subpart UUUUU. (c) To min imize emissions during the extension period Wisconsin Public Service Corporation shall pursue the following guidelines: (i) The boiler, when firing coal, shall fire only subbituminous coal to minimize emissions of hydrochlorid acid and other acid gas emissions

. (ii) The boiler, when firing coal, shall be operated according to current operation permit restrictions. (iii) The boiler, when firing coal, shall optimize mercury reduction to the extent practicable taking into consideration other permit limitations (e.g., particu late matter) using the existing activated carbon injection system. (iv) The boiler shall be dispatched in a manner consistent with current MISO requirements. (d) Within 30 days of achieving final compliance, submit to the Department, notification that final complia nce has been
achieved. (e) This extension is limited to a maximum of one year in duration and expires no later than April 16, 2016. (f) This extension is authorized under s. NR 460.05(7)(g), Wis. Adm. Code, s. 112(i)(3) of the Clean Air Act, and 40 CFR 63.6(i)(9). Failure to satisfy any of the above terms and conditions may result in termination of the compliance extension, in part or whole, pursuant to s. NR 460.05(7)(L), Wis. Adm. Code, and 40 CFR 63.6(i)(14). (g) Any initial performance tests and other activities are also extended by this approval and shall be completed within 180 days after the extended compliance date, as provided under ss. NR 460.05(7)(h)4. And 460.06(1)(b), Wis. Adm. Code and 40 CFR s. 63.6(i)(10)(iv) and 63.9984(f). [40 CFR, ss. 63.9982(a)(1) , 63.9982(d), and 63.9984(b), s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate that compliance with 40 CFR, Part 63, Subpart UUUUU has been achieved, by conducting the required performance tests and other activities, no later than 180 days
after the compliance date in I.B.7.a.(5). [40 CFR s. 63.9984(f)

, s. 285.65(13), Wis.
Stats. ] (1) Initial Performance Testin g Requirements: Initial performance testing is required for all pollutants, to demonstrate compliance with the applicable emission limits in section
I.B.7.a

. (a) The permittee may conduct the initial performance testing in accordance with 40 CFR

s. 63.100 05(h), to determine whether the unit(s) qualifies as a low emitting EGU (LEE) for one or more applicable emissions limits, except if the EGU is equipped with an acid gas scrubber and has a main stack and bypass stack exhaust configuration. (b) For a qualif ying LEE for Hg emissions limits, the permitee must conduct a 30

- day performance test using Method 30B at least once every 12 calendar months to
demonstrate continued LEE status.

{continued on next page...}

35 See Approval of NESHAP Compliance Ext ension Request letter from K. Hart of the department to P. Spicer of Wisconsin Public Service Corporation dated February 11, 2014 and Addendum letter from K. Hart of the department to P Spicer of Wisconsin Public Service Corporation dated February 27, 2014

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 50 B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric U tility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: The permittee shall conduct a tune

- up of the EGU burner and
combustion controls at least each 36 calendar months, or
each 48 calendar months if neural network combustion optimization software is employed, as specified in 40 CFR

s. 63.10021(e) . [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 3, condition 1.] (a) Pe riodic tune

- ups of the EGU(s) shall be performed as part of the demonstration of continuous compliance [40 CFR s. 63.10000(e)] (b) The permittee shall perform the first tune

- up as part of the initial compliance demonstration. Notwithstanding this requireme nt, the permittee may delay the first burner inspection until the next scheduled unit outage provided the requirements of 40 CFR s. 63.10005 are met. [40 CFR s. 63.10021(e)] (c) Subsequently, an inspection of the burner shall be performed at least once ev ery 36 calendar months unless the EGU employs neural network combustion optimization during normal operations in which case an inspection of the burner and combustion controls shall be performed at least once every 48 calendar months. (d) Tune

- ups shall c onsist of the following: (i) As applicable, inspect the burner and combustion controls, and clean or replace any components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required insp ection period. Repair of a burner or combustion control component requiring special order parts may be scheduled as follows:

a) Burner or combustion control component parts needing replacement that affect the ability to optimize
NO X and CO must be installe d within 3 calendar months after the burner inspection, b) Burner or combustion control component parts that do not affect the ability to optimize NO X and CO may be installed on a schedule determined by the operator; (ii) As applicable, inspect the flame p attern and make any adjustments to the burner or combustion controls necessary to optimize the flame pattern. The adjustment
should be consistent with the manufacturer's specifications, if available, or in accordance with best combustion engineering practi ce for that burner type; (iii) As applicable, observe the damper operations as a function of mill and/or cyclone loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments
and effecti ng repair to dampers, controls, mills, pulverizers, cyclones, and sensors; {continued on next page...} (1) Initial Performance Testing Requirements: {...continued from previous page...} (c) For a qualifying LEE of any other applicable emissions limits, the per mittee must conduct a performance test at least once every 36 calendar months to de monstrate continued LEE

status. (d) If an EGU does not qualify as a LEE for total non

- mercury HAP metals, individual non

- mercury HAP metals, or filterable particulate matter (PM), the permitee shall demonstrate compliance through an initial performance test and shall monitor continuous performance through either use of a particulate matter continuous parametric monitoring system (PM CPMS), a PM CEMS, or, for an existing EGU, compliance performance testing repeated quarterly.

(i) If using PM CPMS, the permittee shall establish a site

specific operating limit corresponding to the results of the performance test demonstrating compliance with the pollutant with which you choose to comply: total non

mercury HAP metals, individual non

- mercury HAP metals or filterable PM. The permittee shall use the PM CPMS to demonstrate continuous compliance with this operating limit. If electing to use a PM CPMS, the permittee shall repeat the perf ormance test annually for the selected pollutant limit and reassess and adjust the site

- specific operating limit in accordance with the results of the performance test. (ii) The permittee may also opt to install and operate a particulate matter CEMS certif ied in accordance with Performance Specification 11 and Procedure 2 of 40 CFR part 60, Appendices B and F, respectively, in accordance
with 40 CFR s. 63.10010(i). ( e ) If an EGU does not qualify as a LEE for hydrogen chloride (HCl), the permittee may demons trate initial and continuous compliance through use of an HCl CEMS, installed and operated in accordance with Appendix B to 40 CFR, Part 63, Subpart UUUUU. As an alternative to HCl CEMS, the permittee may demonstrate initial and continuous compliance by c onducting an initial and periodic quarterly performance stack test for HCl. If an EGU uses wet or dry flue gas desulfurization technology (this includes limestone injection into a fluidized bed combustion unit), the permittee may apply
a second alternative to HCl CEMS by installing and operating a sulfur dioxide (SO 2 ) CEMS installed and operated in accordance with 40 CFR Part 75 to demonstrate compliance with the applicable SO 2 emissions limit. ( f

) If an EGU does not qualify as a LEE for Hg, the permittee

s hall demonstrate initial and continuous compliance through use of a Hg CEMS or a sorbent trap monitoring system, in accordance with Appendix A to 40 CFR, Part 63, Subpart
UUUUU. [40 CFR s. 63.10000(c)(1)

, s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 51 B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Co al

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63 .9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: (d) {...continued from previous page... } (iv) As applicable, evaluate windbox pressures and air proportions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

- fuel ratio and ensure that it is correctly calibrated and functioning properly. Such inspection may include calibrating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers to ensure that the systems are operated as
des igned. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior to the next

tune

- up, should be corrected or repaired as necessary; (vi) Optimize combustion to minimize generation of
CO and NO X . This optimization should be consistent with the manufacturer's specifications, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners, overfire air controls, concentric firing

sy stem improvements, neural network or combustion efficiency software, control systems calibrations, adjusting combustion zone temperature profiles, and
add

- on controls such as SCR and SNCR; CO optimization includes burners, overfire air controls,
concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, and adjusting combustion zone temperature profiles; (vii) While operating at full load or the predominantly operated load, measure the
concentratio n in the effluent stream of CO and NO X in ppm, by volume, and oxygen in volume percent,
before and after the tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments ar e made). You may use portable CO,
NO X and O 2 monitors for this measurement. EGU's employing neural network optimization systems need only provide a single pre

- and post

- tune

- up value
rather than continual values before and after each optimization adjustmen t made by the system;

{continued on next page...} (2) Subsequent Performance Tests and Tune

- Ups: (a) For EGUs using PM CPMS to monitor continuous performance with an applicable emission limit as provided for under 40 CFR

s. 63.10000(c) (see condition I. B .7.c .(1) ), you must conduct all applicable performance tests according to Table 5 to 40 CFR Part 63, Subpart UUUUU and 40 CFR s. 63.10007 at least every year. [40 CFR s. 63.10006(a)]

(b) For EGUs meeting the LEE requirements of 40 CFR

s. 63.10005(h) (see cond ition I. B .7.b.(4)(h) ), the performance test shall be repeated once every 3 years (once every year for Hg) according to Table 5 and 40 CFR s. 63.10007. Should subsequent emissions testing results show the unit does not meet the LEE eligibility requirements, LEE status is lost. If this should occur: (i) For all pollutant emission limits except for Hg, the permittee shall conduct emissions testing quarterly, except as otherwise provided in 40 CFR s. 63.10021(d)(1). (ii) For Hg, the permittee shall install, cer tify, maintain, and operate a Hg CEMS or a sorbent trap monitoring system in accordance with Appendix A to 40 CFR, Part 63, Subpart UUUUU, within 6 calendar months of losing LEE eligibility. Until the Hg CEMS or sorbent trap monitoring system is installed, certified, and operating, the permittee shall conduct Hg emissions testing quarterly, except as otherwise provided in 40
CFR s. 63.10021(d)(1). You must have 3 calendar years of testing and CEMS or sorbent trap monitoring system data that satisfy the LEE emissions criteria to reestablish LEE status. [40 CFR s. 63.10006(b)]

(c) Except where paragraphs (a) or (b) of this condition apply, or where the permittee installs, certifies, and operates a PM CEMS to demonstrate compliance with a filterable PM emission s limit, the permittee shall conduct all applicable periodic emissions tests for filterable PM, individual, or total HAP metals emissions according to Table 5 to Subpart UUUUU, 40 CFR s. 63.10007, and s. 63.10000(c), except as otherwise provided in s. 63.1 0021(d)(1).

(d) Except where paragraph (b) of this section applies, for coal

fired EGUs that do not use either an HCl CEMS to monitor compliance with the HCl limit or an SO 2 CEMS to monitor compliance with the alternate equivalent SO 2 emission limit, the

p ermittee shall conduct all applicable periodic HCl emissions tests according to Table 5 to Subpart UUUUU and 40 CFR s. 63.10007 at least quarterly, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(d)]

(e) {reserved} {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 52

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR
, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: (d) {...continued from previous page...}

(viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in paragraphs (d)(i) through (ix) of this condition, including:

a) The concentrations of CO and N O X in the effluent stream in ppm by volume, and oxygen in volume percent, measured before and after an adjustment of the EGU combustion systems; b) A description of any corrective actions taken as a part of the combustion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally capable of using more than one type of fuel during that period; and (ix) Report the dates of the initial and subsequent tune

ups as follows:

a) If the first required tune

- up is performed as part of the initial compliance demonstration, report the date
of the tune

- up in hard copy (as specified in 40 CFR

s. 63.10030) and electronically (as specified in 40
CFR s. 63.10031). Report the dat e of each subsequent tune

- up electronically (as specified in 40
CFR s. 63.10031). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

up and all subsequent tune

- ups electronically, in
accordance with 40 CFR s. 63.10031. [40 CFR s. 63.10021(e)

, s. 285.65(13), Wis. Stats

. ]

(3) Monitoring During Startup and Shutdown: (a) The permittee shall operate all CMS during startup
and shutdown. (b) Startup m eans either the first

- ever firing of fuel in a boiler for the purpose of producing electricity, or the firing of fuel in a boiler after a shutdown event for any

purpose.

(i) Startup ends when any of the steam from the boiler is used to generate electricit y for sale over the grid or for any other purpose (including on site use). (ii) For startup of a unit, clean fuels shall be used, either natural gas or distillate oil or a combination of clean fuels for ignition. (iii) Once the EGU is converted to firing coal, all of the applicable control technologies except dry scrubber and SCR shall be engaged. (2) Subsequent Performance Tests and Tune

- Ups: {... continued from previous page...} (f) Unless following the requirements listed in paragraphs (g) and (h) of this condition, subsequent performance tests shall be
conducted as follows:

(i) performance tests required at least every 3 calendar years must be completed within 35 to 37 calendar months after the previous performance test; (ii) performance tests required a t least every year must be completed within 11 to 13 calendar months after the previous performance test; and (iii) performance tests required at least quarterly must be completed within 80 to 100 calendar days after the previous performance test, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(f)]

(g) If electing to demonstrate compliance using emissions averaging under 40 CFR s. 63.10009, the permittee shall continue to conduct performance stack tests at the appropriate fr equency given in section (c) through (f) of this section. [40 CFR s. 63.10006(g)]

(h) If a performance test on a non

- mercury LEE shows emissions in excess of 50 percent of the emission limit and if the permittee chooses to reapply for LEE status, the perm ittee shall conduct performance tests at the appropriate frequency given in paragraphs (c) through (e) of this condition for that pollutant until all performance tests over a consecutive 3

- year period show compliance with the LEE criteria. [40 CFR s. 63.1 0006(h)]

(i) The permittee shall conduct performance tune

- ups according to
40 CFR s. 63.10021(e), as follows:

(i ) For EGUs not employing neural network combustion optimization during normal operation, each performance tune

- up specified in 40 CFR s. 63.1002 1(e) must be no more than 36 calendar months after the previous performance tune

- up. (ii ) For EGUs employing neural network combustion optimization systems during normal operation, each performance tune

- up specified in 40 CFR s. 63.10021(e) must
be no more than 48 calendar months after the previous performance tune

- up. [40 CFR s. 63.10006(i)]

(j) The permittee shall report the results of performance tests and performance tune

- ups within 60 days after the completion of the performance tests and performance t une

- ups. The reports for all subsequent performance tests must include all applicable information required in 40 CFR s. 63.10031 . [40 CFR s. 63.10006(j)] [40 CFR s. 63.10006

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 53

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) Monitoring During Startup and Shutdown: (b) {...continued from previous page...}

(iv) Any dry scrubber and SCR systems, if present, shall be started appropriately to comply with relevant standards applicable during normal operation. (c) Shutdown means the cessation of operation of a boiler for

any purpose.

(i) Shutdown begins either when none of the steam from

t he boiler is used to generate electricity for sale over the grid or for any other purpose (including on

- site use) or at the point of no fuel being fired in the boiler. (ii) Shutdown ends when there is both no electricity being generated and no fuel being fired in the boiler. (iii) During shutdown, all applicable control technologies shall be operated, while firing coal. (d) The EGU(s) shall comply with all applicable emissions limits at all times except for periods that meet the definitions of startup an d shutdown in 40 CFR Part 63, Subpart
UUUUU

. (e) The permittee shall keep records during periods of startup
and shutdown. (f) The permittee shall provide reports concerning activities and periods of startup and shutdown, as specified in 40 CFR

ss. 63.100 11(g) and 63.10021(h) and (i)

. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 3, conditions 3 and 4.

, s. 285.65(13), Wis.
Stats. ]

(4) Operating Limits: The permittee shall meet the applicable operating limit in Table 4 to Subpart UUU UU as
follows: (a) If demonstrating compliance using a PM CPMS,
maintain the 30

- boiler operating day rolling average PM CPMS output at or below the highest 1

- hour average measured during the most recent performance test demonstrating compliance with the fi lterable PM, total non

mercury HAP metals (total HAP metals, for liquid oil

- fired units), or individual non

- mercury HAP metals (individual HAP metals including Hg, for liquid oil

- fired units) emissions limitation(s). (b) The operating limits apply at all t imes except during periods of startup and shutdown; however, the permittee is required to meet the work practice requirements in
conditions I. B .7.b. (3) during periods of startup or shutdown. [40 CFR s. 63.9991(a)(2), s. 63.10000(a), and Table 4 to 40
CF R, Part 63, Subpart UUUUU

, s. 285.65(13), Wis. Stats. ] ( 3 ) Performance Tests

– Methods and Other Procedures: (a) Except as otherwise provided in this condition , the permittee shall conduct all required performance tests according to 40 CFR s. 63.7(d), (e ), (f), and (h). The permittee shall also develop a site

- specific test plan according to the requirements in 40 CFR s. 63.7(c). (i) If using CEMS (Hg, HCl, SO 2 , or other) to determine compliance with a 30

- boiler operating day rolling average
emission limi t, you must collect data for all nonexempt unit operating conditions (see 40 CFR s. 63.10011(g) and Table 3 to 40 CFR, Part 63, Subpart UUUUU). (ii) If conducting performance testing with test methods in lieu of continuous monitoring, operate the unit at m aximum normal operating load conditions during each periodic (e.g., quarterly) performance test. Maximum normal operating load will be generally between 90 and 110 percent of design capacity but should be representative of site specific normal operations d uring each test run. (iii) For establishing operating limits with particulate matter continuous parametric monitoring system (PM CPMS) to demonstrate compliance with a PM or non Hg metals emissions limit, operate the unit at maximum normal operating load c onditions during the performance test period. Maximum normal operating load will be generally between 90 and 110 percent of design capacity but should be representative of site specific normal operations during
each test run. [40 CF R s. 63.10007(a)]

(b) Th e permittee shall conduct each performance test (including traditional 3

- run stack tests, 30

- boiler operating day tests based on CEMS data (or sorbent trap monitoring system data), and 30

- boiler operating day Hg emission tests for LEE qualification) accord ing to the requirements in Table 5 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10007(b)]

(c) If choosing the filterable PM method to comply with the
PM emission limit and demonstrate continuous performance using
a PM CPMS as provided for in 40 CFR s. 63.10000(c), the permittee shall also establish an operating limit according to 40 CFR s. 63.10011(b), s. 63.10023, and Tables 4 and 6 to Subpart UUUUU. Should the permittee desire to have operating limits that correspond to loads other than maximum norma l operating load, the permittee shall conduct testing at those other loads to determine the additional operating limits. [40 CFR s. 63.10007(c)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 54

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentia lly Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Cod e, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (5) At all times the permittee shall operate and
maintain B 03 , including the associated air pollution control equipment and monitoring equipment , in a manner consistent with safety and good air pollution control practices for minimizing emissions. Determination of whether such operation and maintenance procedures are being used will be based on information which may include, but is not limited
to, monitoring results, review of operation and maintenance procedures, review of operation and maintenance records, and inspection of the source. [40 CFR s. 63.10000(b)

, s. 285.65(13), Wis. Stats

. ]

(6) Initial Compliance Requirements : (a) General Requi rements: For each affected EGU, initial compliance with each applicable emission limit
in section I.B .7.a. shall be demonstrated with performance testing. Where two emissions limits are specified for a particular pollutant (e.g., a heat input

based limit in lb/MMBtu and an electrical output

based limit in lb/MWh), compliance may be
demonstrated with either emission limit.

One or more of the following activities may be required in conjunction with performance testing, as appropriate: collection of hourly electrical load data (megawatts); establishment of operating limits according to 40 CFR s. 63.10011 and 40 CFR Part 63, Subpart UUUUU, Tables 4 and 7; and CMS performance evaluations. In all cases, you must demonstrate initial compliance no later than the applicable date in paragraph (f) of 40 CFR s.
63.10005 for tune

- up work practices for existing EGUs, in 40 CFR s. 63.9984.

(i) To demonstrate initial compliance with an applicable emissions limit in section I. B .7.a. of this permit using stack testing, the initial performance test generally consists of three runs at specified process operating conditions using approved methods. If required to establish operating limits (see paragraph (d) of 40 CFR s. 63.10005 and Table 4 to 40 CFR Part 63, Subpart UUUUU), t he permittee shall collect all applicable parametric data during the performance test period. Also, if you choose to comply with an electrical output

- based emission limit, you must collect hourly electrical load data during the test period.

{continued on n ext page...} ( 3 ) Performance Tests

– Methods and Other Procedures: {...continued from previous page...} (d) Except for a 30

- boiler operating day performance test based on CEMS (or sorbent trap monitoring system) data, where the concept of test runs does not app ly, the permittee shall conduct a minimum of three separate test runs for each performance test, as specified in 40
CFR s. 63.7(e)(3). Each test run shall comply with the minimum applicable sampling time or volume specified in Table 1 or 2 to Subpart UUUUU . Sections 63.10005(d) and (h) of 40 CFR (see
conditions I. B .7.b.(6)(d) and (h) ), respectively, provide special instructions for conducting performance tests based on CEMS or sorbent trap monitoring systems, and for conducting emission tests for LEE qualif ication. [40 CFR s. 63.10007(d)]

(e) To use the results of performance testing to determine compliance with the applicable emission limits in I. B .7.a. , proceed as follows: (i) Except for a 30

- boiler operating day performance test based on CEMS (or sorbent trap monitoring system) data, if measurement results for any pollutant are reported as below the method detection level (e.g., laboratory analytical results for one or more sample components are below the method defined analytical detection level), the pe rmittee shall use the method detection level as the measured emissions level for that pollutant in calculating compliance. The measured result for a multiple component analysis (e.g., analytical values for multiple Method 29 fractions
both for individual H AP metals and for total HAP metals) may
include a combination of method detection level data and analytical data reported above the method detection level.

(ii) If the limits are expressed in lb/MMBtu or lb/TBtu, the permittee shall use the F

- factor method ology and equations in sections 12.2 and 12.3 of EPA Method 19 in Appendix A

- 7 to Part 60 of 40 CFR. In cases where an appropriate F

- factor is not listed
in Table 19

- 2 of Method 19, you may use F

- factors from Table 1 in section 3.3.5 of Appendix F to Part 75 of 40 CFR, or F

- factors derived using the procedures in section 3.3.6 of Appendix to Part 75 of 40 CFR. Use the following factors to convert the pollutant concentrations measured during the initial performance tests to units of lb/scf, for use in the ap plicable Method 19 equations:

a) Multiply SO 2 ppm by 1.66 × 10 −7 ; b) Multiply HCl ppm by 9.43 × 10 −8 ; c) Multiply HF ppm by 5.18 × 10 −8 ; d) Multiply HAP metals concentrations (mg/dscm) by 6.24 ×
10 −8 ; and e) Multiply Hg concentrations (μg/scm) by 6.24 × 10 −11

. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 55

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coa l

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63. 9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (a) {...continued from previous page... }

(ii) To demonstrate initial compliance using either a CMS that measures HAP concentrations directly ( i.e. , an Hg, HCl, or HF CEMS, or a sorbent trap monitoring system) or an SO 2 or PM CEMS, the initial performance test consists of 30 boiler operating day s of data collected by the initial compliance demonstration date specified in 40 CFR s. 63.10005 with the certified monitoring system.

a) The 30

- boiler operating day CMS performance test must demonstrate compliance with the applicable Hg, HCl, HF, PM, or
S O 2 emissions limit in Table 1 or 2 to this subpart. b) If you choose to comply with an electrical output

- based emission limit, you must collect hourly electrical load data during the performance test period. [40 CFR s. 63.10005(a)]

(b) Performance testing requirements: If using performance testing to demonstrate initial compliance with the applicable emissions limits in
section I. B .7.a. of this permit, the permittee shall conduct the tests according to 40 CFR s. 63.10007 and Table 5 to 40 CFR Part 63, Subpa rt UUUUU. For the purposes of the initial compliance demonstration, test data and results from a performance test conducted prior to the compliance date in I.B.7.a.(5) , may be used provided that the following conditions are fully met:

(i) For a performanc e test based on stack test data, the test was conducted no more than 12 calendar months prior to the compliance
date in I.B.7.a.(5) ; (ii) For a performance test based on data from a certified CEMS or sorbent trap monitoring system, the test consists of all valid CMS data recorded in the 30 boiler operating days immediately preceding the compliance date in I.B.7.a.(5) ; (iii) The performance test was conducted in accordance with all applicable requirements in 40 CFR s. 63.10007 and Table 5 to 40
CFR Part 63 S ubpart UUUUU; (iv) A record of all parameters needed to convert pollutant concentrations to units of the emission standard (e.g., stack flow rate, diluent gas concentrations, hourly electrical loads) is available for the entire performance test period; and (v) For each performance test based on stack test data, the permittee certifies, and keeps documentation demonstrating, that the EGU configuration, control devices, and fuel(s) have remained consistent with conditions since the prior performance test was conducted. [40 CFR s. 63.10005(b)]

(c) Operating limits: In accordance with 40 CFR s. 63.10010 and Table 4 to 40 CFR Part 63, Subpart UUUUU, the permitee may be required to establish operating limits using PM CPMS as part of the initial compliance demons tration. [40 CFR s. 63.10005(c)] (3) Performance Tests

– Methods and Other Procedures: (e) {...continued from previous page...} (iii) To determine compliance with emission limits expressed in lb/MWh or lb/GWh, the permittee shall first cal culate the pollutant mass emission rate during the performance test, in units of lb/h. For Hg, if a CEMS or sorbent trap monitoring system is used, use Equation A

- 2 or
A

- 3 in Appendix A to 40 CFR, Part 63, Subpart UUUUU (as applicable). In all other cases, use an equation that has the general form of Equation A

2 or A

- 3, replacing the value of K with 1.66 ×
10 −7 lb/scf

- ppm for SO 2 , 9.43 × 10 −8 lb/scf

- ppm for HCl (if an HCl CEMS is used), or 6.24 × 10 −8

lb

- scm/mg

- scf for HAP metals and for HCl (when performance stack testing is used), and defining
C h as the average SO 2 or HCl concentration in ppm, or the averag e HAP metals concentration in mg/dscm. This calculation requires stack gas volumetric flow rate (scfh) and (in some cases) moisture content data (see 40 CFR

ss. 63.10005(h)(3) and 63.10010). Then, if the applicable emission limit is in units of lb/GWh,

use Equation A

- 4 in Appendix A to Subpart UUUUU to calculate the pollutant emission rate in lb/GWh. In this calculation, define (M) h as the calculated pollutant mass emission rate for the performance test (lb/h), and define (MW) h as the average electrical loa d during the performance test (megawatts). If the applicable emission limit is in lb/MWh rather than lb/GWh, omit the 10 3 term from Equation A

- 4 to determine the pollutant emission rate in lb/MWh. [40 CFR s. 63.10007(e)]

(f) Upon request, the permittee sha ll make available to the department such records as may be necessary to determine whether the performance tests have been done according to the requirements of this section. [40 CFR s. 63.10007(f)] [40 CFR s. 63.10007

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 56

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards for H APs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9 982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page... } (d) CMS requirement: If required to (or electing to) demonstrate initial compliance using a continuous monitoring system, the CMS must pass a performance evaluation prior to the initial compliance demonstration. If a CMS has been previously certified

un der another state or federal program and is continuing to meet the on

- going quality

- assurance (QA) requirements of that program, then, provided that the certification and QA provisions of that program meet the applicable requirements of 40 CFR
ss. 63.10010 (b) through (h), an additional performance evaluation of the CMS is not required.

(i) The permittee may demonstrate initial compliance with the applicable SO 2 or HCl,
emissions limit in condition I. B .7.a.(2) through use
of an SO 2 or HCl CEMS installed and operated in accordance with 40 CFR, Part 75 or 40 CFR, Part 63, Subpart UUUUU, Appendix B, as applicable. The permittee may demonstrate compliance with a
filterable PM emission limit in condition I. B .7.a.(1) (a) through use of a PM CEMS installed, certifie d, and operated in accordance with 40 CFR

s. 63.10010(i). Initial compliance is achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS data, expressed in units of the standard (see 40 CFR s. 63.10007(e)), meets the applicab le SO 2 , PM, or HCl emissions limit in section I.A.7.a. of this permit. Use Equation 19

- 19 of Method 19 in Appendix A

- 7 to 40 CFR, Part 60
to calculate the 30

- boiler operating day average emissions rate. ( N OTE : For this calculation, the term
E hj in Equatio n 19

- 19 must be in the same units of measure as the applicable HCl emission limit in
condition I. B .7.a.(2) (a)

. (ii) When demonstrating compliance with the applicable emission limits for total non

- mercury HAP metals, individual non

- mercury HAP metals,

tota l HAP metals, individual HAP metals, or
filterable PM in section I. B .7.a. of this permit using initial performance testing and continuous monitoring with PM CPMS, the permittee shall:

a) Demonstrate initial compliance no later than 180 days after the compl iance date in I.B.7.a.(5) ;

{continued on next page...} ( 4 ) Continuous Monitoring System Requirements: (a) If demonstrating compliance with any applicable emissions limit through use of a continuous monitoring system (CMS), where a CMS
includes a continuous parameter monitoring system (CPMS) as well as a continuous emissions monitoring system (CEMS), the permitee shall develop a site

- specific monitoring plan and submit this site

specific monitoring plan, if requested, at least 60 days before the initial perfo rmance evaluation (where applicable) of your CMS. The requirement to develop and submit a site

- specific monitoring plan does not apply to affected sources with existing monitoring plans that apply to CEMS and CPMS prepared under Appendix B to 40 CFR
Part 6 0 or Part 75, and that meet the requirements of 40 CFR

s. 63.10010. (The permittee may use the process described in § 63.8(f)(4), to request approval of monitoring system quality assurance and quality control procedures alternative to those specified
in t his condition and, if approved, include those in the site

- specific monitoring plan.) The monitoring plan shall address the provisions in (b) through (e) below. (b) The site

- specific monitoring plan shall include the information specified in condition (e), below. Alternatively, the requirements of condition (e) are considered to be met for a particular CMS or sorbent trap monitoring system if: (i) The CMS or sorbent trap monitoring system is installed, certified, maintained, operated, and quality

- assured ei ther according to 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU; and (ii) The recordkeeping and reporting requirements of 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU, that pertain to the CMS are met. (c) If requested by the department, the permittee shall submit the monitoring plan (or relevant portion of the plan) at least 60 days before the initial performance evaluation of a particular CMS, except where the CMS has already undergone a performance evaluati on that meets the requirements of 40 CFR s. 63.10010 (e.g., if the CMS was previously certified under another program). (d) The permittee shall operate and maintain the CMS according to
the site

- specific monitoring plan. (e) The provisions of the site

- spec ific monitoring plan shall address the following items: (i) Installation of the CMS or sorbent trap monitoring system sampling probe or other interface at a measurement location relative to each affected process unit such that the measurement is representa tive of control of the exhaust emissions (e.g., on or downstream of the last control device). See 40 CFR s. 63.10010(a) for further details. For PM CPMS installations, follow the procedures in 40 CFR s. 63.10010(h).

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 57

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (N ESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982( d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (d) (ii) {...continued from p revious page...} b) Demonstrate continuous compliance with the
PM CPMS site

- specific operating limit that corresponding to the results of the performance test demonstrating compliance with the emission limit with which the permittee has chosen to comply;
and c) Repeat the performance test annually for the selected pollutant emissions limit and reassess and adjust the site

- specific operating limit in accordance with the results of the performance test. (iii) When demonstrating compliance with the Hg
emission l imit in I. B .7.a.(3) using Hg CEMS or sorbent trap monitoring systems, initial compliance shall be demonstrated no later than 180 days after the compliance date in I.B.7.a.(5) . Initial compliance is achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS (or sorbent trap monitoring system) data, expressed in units of the standard (see section 6.2 of Appendix A to 40 CFR, Part 63, Subpart UUUUU), meets the applicable Hg emission limit in I. B .7.a.(3)

. [40 CFR s. 63.10005(d)]

(e) Tune

- ups: As part of the initial compliance demonstration, the permittee shall conduct a performance tune

- up of each EGU according to 40
CFR s. 63.10021(e). [40 CFR s. 63.10005(e)]

(f) For existing affected sources a tune

- up may occur prior to April 16, 2012, so that existing sources without neural networks have up to 42 calendar months (3 years from promulgation plus 180 days) or, in the case of units employing neural network combustion controls, up to 54 calendar months (48 months from promulgation plus 180 days) after the date that is specified for your source in 40 CFR s. 63.9984 and according to the applicable provisions in s. 63.7(a)(2) as cited in Table 9 to Subpart UUUUU to demonstrate compliance with this requirement. If a tune

- up occurs prior to such date, the source must maintain adequate
records to show that the tune

- up met the requirements of this standard. [40 CFR s. 63.10005(f)]

(g) {reserved}

{continued on next page...} ( 4 ) Continuous Monitoring System Requirements: (e) {...continued from previous page...} (ii) Performance and equipment specifications for the sample interface, the pollutant concentration or parametric signal analyzer, and the data collection and reduction systems. (iii) Schedule for conducting initial and per iodic performance
evaluations. (iv) Performance evaluation procedures and acceptance criteria (e.g., calibrations), including the quality control program in accordance with the general requirements of 40 CFR s. 63.8(d). (v) On

- going operation and maintenan ce procedures, in accordance with the general requirements of 40 CFR

ss. 63.8(c)(1)(ii), (c)(3), and (c)(4)(ii). (vi) Conditions that define a CMS that is out of control consistent
with 40 CFR s. 63.8(c)(7)(i) and for responding to out of control periods c onsistent with 40 CFR ss. 63.8(c)(7)(ii) and (c)(8). (vii) On

- going recordkeeping and reporting procedures, in accordance with the general requirements of 40 CFR ss. 63.10(c), (e)(1), and (e)(2)(i), or as specifically required under 40 CFR, Part 63, Subpar t UUUUU. [40 CFR s. 63.10000(d)

, s. 285.65(13), Wis. Stats

. ]

( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (a) For the CEMS, PM CPMS, and sorbent trap monitoring systems used to provide data under 40 CFR, Part 63, Subpart UUUUU, t he permittee shall comply with the continuous monitoring system installation requirements for the appropriate exhaust configurations as required by 40 CFR s. 63.10010(a). (Exhaust configurations include but are not limited individual stacks, a common sta ck configuration or a main stack plus a bypass stack.) [40 CFR s. 63.10010(a)]

(b) If using an oxygen (O 2 ) or carbon dioxide (CO 2 ) CEMS to convert measured pollutant concentrations to the units of the applicable emissions limit, the O 2 or CO 2 concentrat ions shall be monitored at a location that represents emissions to the atmosphere, i.e., at the outlet of the EGU, downstream of all emission control devices. The permittee shall install, certify, maintain, and operate the CEMS according to Part 75 of 40 C FR. Use only quality

- assured O 2 or CO 2 data in the emissions calculations; do not use Part 75 substitute data values. [40 CFR s. 63.10010(b)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 58

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page...} (h) Low emitting EGUs: The provisions of this paragraph (h) apply to all po llutants with emissions limits from existing EGUs. This compliance option may not be pursued, if for EGUs equipped with an acid gas scrubber and with a main stack and bypass stack exhaust configuration.

(i) An EGU may qualify for low emitting EGU (LEE) sta tus for Hg, HCl, filterable PM, total non

Hg HAP metals, or individual non

- Hg HAP metals if performance test data is collected that meets the requirements of this paragraph (h), and if those data
demonstrate:

a) For all pollutants except Hg, performance te st emissions results less than 50 percent of the applicable emissions limits in I. B .7.a. for all required testing for 3 consecutive years; or b) For Hg emissions, either:

1) Average emissions less than 10 percent of the applicable Hg emissions limit in I

. B .7.a.(3) (expressed either in units of lb/TBtu or lb/GWh); or 2) Potential Hg mass emissions of 29.0 or fewer pounds per year and compliance with the applicable Hg emission limit in I. B .7.a.(3) (expressed either in units of lb/TBtu or lb/GWh). (ii) For all pollutants except Hg, the permittee shall conduct all required performance tests described in
40 CFR s. 63.10007 to demonstrate that a unit qualifies for LEE status.

a) When conducting emissions testing to demonstrate LEE status, the permittee shall
in crease the minimum sample volume specified in Table 1 or 2 to 40 CFR, Part 63, Subpart UUUUU nominally by a factor of two. b) Follow the instructions in 40 CFR

s. 63.10007(e) and Table 5 to Subpart UUUUU to convert the test data to the units of the applica ble
standard.

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (c) If required to use a stack gas flow rate monitor, either for routine operation of a sorbent trap monitoring system or to convert pollutant concentrations to units of an electrical output

- based emission standard in Table 1 or 2 to Subpart UUUUU, the permittee shall install, certify, operate, and maintain the monitoring system and conduct on

- going quality

- assuranc e testing of the system according to Part 75 of 40 CFR. Use only unadjusted, quality

- assured flow rate data in the emissions calculations. Do not apply bias adjustment factors to the
flow rate data and do not use substitute flow rate data in the
calculatio ns. [40 CFR s.63.10010(c)]

(d) If required to make corrections for stack gas moisture content when converting pollutant concentrations to the units of an emission standard in Table 1 of 2 to Subpart UUUUU, the permittee shall install, certify, operate, an d maintain a moisture monitoring system in accordance with Part 75 of 40 CFR. Alternatively, for coal

- fired units, appropriate fuel

- specific default moisture values from 40 CFR

s. 75.11(b) may be used to estimate the moisture content of the stack gas. If a moisture monitoring system is installed and operated, do not use substitute moisture data in the emissions calculations. [40 CFR s. 63.1001(d)]

(e) If using an HCl CEMS, the permittee shall install, certify, operate, maintain, and quality

- assure the data from the monitoring system in accordance with Appendix B to Subpart UUUUU. Calculate and
record a 30

- boiler operating day rolling average HCl emission rate in the units of the standard, updated after each new boiler operating day.
Each 30

- boiler operating day rolling average emission rate is the average of all the valid hourly HCl emission rates in the preceding 30 boiler operating days (see section 9.4 of Appendix B to Subpart UUUUU). [40 CFR s. 63.10010(e)]

(f)(i) If using an SO 2 CEMS, the permittee sha ll install the monitor at the outlet of the EGU, downstream of all emission control devices, and shall certify, operate, and maintain the CEMS according to
Part 75 of 40 CFR. (ii) For on

- going QA, the SO 2 CEMS shall meet the applicable daily, quarterly, an d semiannual or annual requirements in sections 2.1 through 2.3 of Appendix B to Part 75 of 40 CFR, with the following addition: The permittee shall perform the linearity checks required in section 2.2 of Appendix B to Part 75 of 40 CFR
if the SO 2 CEMS has a span value of 30 ppm or less.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 59

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than t he compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) {...continued from previous page...} (iii) For Hg, the permittee shall conduct a 30

- boiler operating day performance test using Method 30B in Appendix A

- 8 to 40 CFR Part 60 to determine whether a unit qual ifies for LEE status. Locate the Method 30B sampling probe tip at a point within the 10 percent centroidal area of the duct at a location that meets Method 1 in Appendix A

- 1 to 40 CFR Part 60 and conduct at least three nominally equal length test runs over the 30

- boiler operating day test period. Collect Hg emissions data continuously over the entire test period (except when changing sorbent traps or performing required reference method QA procedures), under all process operating conditions. The permittee m ay use a pair of sorbent traps to sample the stack gas for no more than 10 days.

a) Depending on whether LEE status for Hg is
assessed in terms of the lb/TBtu or lb/GWh
emission limit in I. B .7.a.(3) or in terms of the annual Hg mass emissions limit of 29.0 lb/year, the permittee shall collect some or all of the following data during the 30

- boiler operating day test period (see paragraph (h)(iii)c) of this condition):

1) Diluent gas (CO 2 or O 2 ) data, using either Method 3A in Appendix A

- 3 to Part 60 of 40
C FR or a diluent gas monitor that has been certified according to Part 75 of 40 CFR. 2) Stack gas flow rate data, using either Method 2, 2F, or 2G in Appendices A

- 1 and A

- 2 to Part 60 of 40 CFR, or a flow rate monitor that has been certified according to Pa rt 75 of 40 CFR. 3) Stack gas moisture content data, using either Method 4 in Appendix A

- 1 to Part 60 of 40 CFR, or a moisture monitoring system that has been certified according to Part 75 of 40 CFR. Alternatively, an appropriate fuel

- specific
default moi sture value from 40 CFR s. 75.11(b) may be used in the calculations. 4) Hourly electrical load data (megawatts), from facility records.

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (f) {...continued from previous page...} (iii) Calculate and record a 30

- boiler operating day rolling average
SO 2 emission rate in the units of the standard, updated after each new boiler operating day. Each 30

- boiler operating day rolling average emission rat e is the average of all of the valid SO 2 emission rates in the preceding 30 boiler operating days. (iv) Use only unadjusted, quality

- assured SO 2 concentration values in the emissions calculations; do not apply bias adjustment factors
to the Part 75 SO 2 dat a and do not use Part 75 substitute data
values. [40 CFR s. 63.10010(f)]

(g) If using a Hg CEMS or a sorbent trap monitoring system, the permittee shall install, certify, operate, maintain and quality

- assure the data from the monitoring system in accordanc e with Appendix A to Subpart UUUUU. The permittee shall calculate and record a 30

- (or, if alternate emissions averaging is used, 90

- ) boiler operating day rolling average Hg emission rate, in units of the standard, updated after each new boiler operating day. Each 30

- (or, if alternate emissions averaging is used, 90

- ) boiler operating day rolling average emission rate, calculated according to section 6.2 of Appendix A to Subpart UUUUU, is the average of all of the valid hourly Hg emission rates in the pre ceding 30

- (or, if alternate emissions averaging is used, a 90

- ) boiler operating days. Section 7.1.4.3 of Appendix A to Subpart UUUUU explains how to reduce sorbent trap monitoring system data to an hourly basis. [40 CFR s. 63.10010(g)]

(h) If using a PM CPMS to demonstrate continuous compliance with an operating limit, the permittee shall install, calibrate, maintain, and operate the PM CPMS and record the output of the system as follows: (i) Install, calibrate, operate, and maintain the PM CPMS
accordin g to the procedures in the approved site

- specific monitoring plan developed in accordance with 40 CFR s. 63.10000(d), and meet the requirements the following: a) The operating principle of the PM CPMS shall be based on
in

- stack or extractive light scatter, light scintillation, beta attenuation, or mass accumulation detection of the exhaust gas or representative sample. The reportable measurement output from the PM CPMS may be expressed as milliamps, stack concentration, or other raw data signal. b) The PM C PMS shall have a cycle time ( i.e. , period required to complete sampling, measurement, and reporting for each measurement) no longer than 60 minutes. c) The PM CPMS shall be capable, at a minimum, of detecting and responding to particulate matter concentr ations of 0.5 mg/acm. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 60

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean A ir Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the complianc e date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) (iii) {...continued from previous page...} b) If a CEMS is used to measure CO 2 (or O 2 ) concentration, and/or flow rate, and/or moisture, record hourly average values of each parameter throughout the 30

- boiler operating day test period. If opting to use EPA reference methods rather than CEMS for any parameter, the permittee shall perform at least one representative test run on each operating day of the test period, using the applicable reference
method. c) Calculate the average Hg concentration, in μg/m 3 (dry basis), for the 30

- boiler operating day performance test, as the arithmetic average of all Method 30B sorbent trap results. Also calculate, as applicable, the average values of
CO 2 or O 2 concentration, stack gas flow rate, stack gas moisture content, and electrical load for the test period. Then:

1) To express the test results in units of lb/TBtu, follow the procedures in 40 CFR

s. 63.10007(e). Use the average Hg concentration and diluent gas values in the
calculation s. 2) To express the test results in units of lb/GWh, use Equations A

- 3 and A

- 4 in section 6.2.2 of Appendix A to Subpart UUUUU, replacing the hourly values “C h ”, “Q h ”, “B
ws ” and “(MW) h ” with the average values of these parameters from the performance test

. 3) To calculate pounds of Hg per year, use one of the following methods:

A) Multiply the average lb/TBtu Hg emission rate (determined according to paragraph (h)(3)(iii)(A) of this section) by the maximum potential annual heat input to the unit (TBtu), wh ich is equal to the maximum rated unit heat input (TBtu/hr) times 8,760 hours. If the maximum rated heat input value is expressed in units of MMBtu/hr, multiply it by 10 −6 to convert it to TBtu/hr; or

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (h) {...continued from previous page...} (ii) Complete the initial performance evaluation no later than
October 13, 2015 or 180 days after the compliance date in I.B.7.a.(5) , whichever is later

. (iii) Collect PM CPMS hourly average output data for all boiler operating hours except as indicated in paragraph (h)(v) of this condition. Express the PM CPMS output as mill iamps, PM concentration, or other raw data signal value.

(iv) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CPMS output collected during all nonexempt boiler operating hours data (e.g., milliamps, PM

conce ntration, raw data signal).

(v) The permittee shall collect data using the PM CPMS at all times the process unit is operating and at the intervals specified in paragraph (h)(i)b) of this condition, except for periods of monitoring system malfunctions, repa irs associated with monitoring system malfunctions, required monitoring system quality assurance or quality control activities (including, as applicable, calibration checks and required zero and span adjustments), and any scheduled
maintenance as defined i n the site

- specific monitoring plan.

(vi) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with your operating limit except:

a) Any data collected during monitoring system malfunctions, repairs as sociated with monitoring system malfunctions, or required monitoring system quality assurance or quality control activities conducted during monitoring system malfunctions are not used in calculations (report any such periods in your annual deviation repor t); b) Any data collected during periods when the monitoring system is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality ass urance or quality control activities conducted during out

- of

- control periods are not used in calculations (report emissions or operating levels and report any such periods in the annual deviation report); c) Any data recorded during periods of startup or s hutdown. (vii) The permittee shall record and make available upon request results of PM CPMS system performance audits, as well as the dates and duration of periods from when the PM CPMS is out of control until completion of the corrective actions necessar y to return the PM CPMS to operation consistent with the site

- specific monitoring plan. [40 CFR s.63.10010(h)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 61

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48

mm Btu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) (iii)c) 3) {...continued from previous page...} B) Multiply the average lb/GWh Hg emission rate (determined according to paragraph (h)(3)(i ii)(B) of this section) by the maximum potential annual electricity generation (GWh), which is equal to the maximum rated electrical output of the unit (GW) times 8,760 hours. If the maximum rated electrical output value is expressed in units of MW, multip ly it by 10 −3 to convert it to GW;

or C) If an EGU has a federally

- enforceable permit limit on either the annual heat input or the number of annual operating hours, you may modify the calculations in paragraph (h)(3)(iii)(C)(1) of this section by replacin g the maximum potential annual heat input or 8,760 unit operating hours with the permit limit on annual heat input or operating hours (as applicable). [40 CFR s. 63.10005(h)]

(i) {reserved}

(j) Startup and shutdown: The permitee shall follow the require ments given in Table 3 to 40 CFR, Part 63, Subpart
UUUUU . [40 CFR s. 63.10005(j)]

(k) The permittee shall submit a Notification of Compliance Status summarizing the results of the initial compliance demonstration, as provided in 40 CFR s. 63.10030 . [40 C FR s. 63.10005(k)]
[40 CFR s. 63.100 05

, s. 285.65(13), Wis. Stats.]

( 7 ) Initial Demonstration of Compliance with Emission
Limitations and Work Practice Standards: (a) The permittee shall demonstrate initial compliance with each
emissions limit in I. B .7.a

. by conducting performance testing. [40 CFR s. 63.10011(a)]

(b) If demonstrating initial compliance with HAP metals or filterable PM emission limit(s) through performance stack tests and electing to use a PM CPMS to demonstrate continuous performance, th e permittee shall also establish a site

- specific operating limit, in accordance with Table 4 to Subpart UUUUU,
40 CFR s. 63.10007, and Table 6 to Subpart UUUUU. The permittee may use only the parametric data recorded during successful performance tests ( i. e. , tests that demonstrate compliance with the applicable emissions limits) to establish an operating limit. [40 CFR s. 63.10011(b)]

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (i) If choosing to comply with the PM filterable emissions limit in lieu of metal HAP limits, the permittee may choose to install, certify, operate, and maintain a PM CEMS and record the output of the PM CEMS as specified in paragraphs (i)(i) throu gh (v) of this condition, below. The compliance limit will be expressed as a 30

- boiler operating day rolling average of the numerical emissions limit value applicable for the unit in tables 1 or 2 to Subpart UUUUU.

(i) Install and certify the PM CEMS accor ding to the procedures and requirements in Performance Specification 11

— Specifications and Test Procedures for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix B to Part 60 of 40 CFR, using Method 5 at Appendix A

- 3 to Part 60 of 40 CFR and ensuring that the front half filter temperature shall be 160° ± 14 °C (320° ± 25 °F). The reportable measurement output from the PM CEMS must be expressed in units of the applicable emissions limit (e.g., lb/MMBtu, lb/MWh).

(ii) Operate and maintain the PM CEMS according to the procedures and requirements in Procedure 2

— Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix F to Part 60 of 40 CFR.

a) The permi ttee shall conduct the relative response audit (RRA) for the PM CEMS at least once annually. b) The permittee shall conduct the relative correlation audit (RCA) for the PM CEMS at least once every 3 years.

(iii) Collect PM CEMS hourly average output data f or all boiler operating hours except as indicated in paragraph (i) of this condition.

(iv) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CEMS output data collected during all nonexempt boiler operating hou rs.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 62

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTI NUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a .(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) Initial Demonstration of Compliance with Emission Limitations and Work Practice Standards: {...continued from previous page...} (c)(i) If using CEMS or sorbent trap monitoring systems to measure a HAP (e.g., Hg or HCl) directly, the first 30

- boiler operating day (or,
if alternate emi ssions averaging is used for Hg, the 90

- boiler operating day) rolling average emission rate obtained with certified
CEMS after the compliance date in I.B.7.a.(5) (or, if applicable, prior to that date, as described in 40 CFR

s. 63.10005(b)(2)), expressed i n units of the standard, is the initial performance test. Initial compliance is demonstrated if the results of the performance test meet the applicable emission limit in I. B .7.a. (ii) For a unit that uses a CEMS to measure
SO 2 or PM emissions for initial c ompliance, the first 30 boiler operating day average
emission rate obtained with certified CEMS
after the compliance date in I.B.7.a.(5) (or, if applicable, prior to that date, as described in
40 CFR s. 63.10005(b)(2)), expressed in units of the standard, is the initial performance test. Initial compliance is
demonstrated if the results of the performance test meet the applicable SO 2 or filterable PM emission limit in I. B .7.a. [40 CFR s.10011(c)]

(d) For candidate LEE units, use the results of the performan ce testing described in 40 CFR

s. 63.10005(h) to determine initial compliance with the applicable emission limit(s) in I. B .7.a

. and to determine whether the unit qualifies for LEE status. [40 CFR s. 63.10011(d)]

(e) The permittee shall submit a Notificati on of Compliance Status containing the results of the initial compliance demonstration, according to 40 CFR s. 63.10030(e). [40 CFR s. 63.10011(e)] ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (i) {...continued from previous page...} (v) The permittee shall collect data using the PM CEMS at all times the process unit is operating and at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associa ted with monitoring system malfunctions, and required monitoring system quality assurance or quality control activities.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the operating limi t except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctions, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in calculat ions and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitoring system is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or control activities conducted during out of control periods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) An y data recorded during periods of startup or shutdown. b) The permittee shall record and make available upon request results of PM CEMS system performance audits, dates and duration of periods when the PM CEMS is out of control to completion of the

correct ive actions necessary to return the PM CEMS to operation
consistent with the site

- specific monitoring plan. [40 CFR s. 63.10010(i)]

(j) The permittee may choose to comply with the metal HAP emissions limits using CEMS approved in accordance with 40 CFR s. 63.7(f) as an alternative to the performance test method specified in 40 CFR, Part 63, Subpart UUUUU. If approved to use a HAP metals CEMS, the compliance limit will be expressed as a 30

- boiler operating day rolling average of the
numerical emissions limi t value in I. B .7.a.(1) . If approved, the permittee may choose to install, certify, operate, and maintain a HAP metals CEMS and record the output of the HAP metals CEMS as specified below: (i) a) Install and certify the HAP metals CEMS according to the

pro cedures and requirements in the approved site

- specific test plan as required in 40 CFR s. 63.7(e). The reportable measurement output
from the HAP metals CEMS shall be expressed in units of the applicable emissions limit ( e.g. , lb/MMBtu, lb/MWh) and in the form
of a 30

- boiler operating day rolling average. b) Operate and maintain the HAP metals CEMS according to the procedures and criteria in the site specific performance evaluation and quality control program plan required in 40 CFR s. 63.8(d).

{continued o n next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 63

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Em ission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring:
(7) Initial Demonstration of Compliance with Emission Limitations and Work Practice Standards: {...continued from previous page...} (f)(i) The permittee shall determine the fuel whose combustion produces the least uncontrolled emissions, i.e. , the cleanest fuel, either natural gas or distillate oil, that is available on site or accessible nearby for use during periods of startup
or shutdown. (ii) The cleanest fuel available, either natural gas or distillate oil, for use during periods of startup or shutdown determination may take safety
considerations int o account. [40 CFR 2. 63.10011(f)]

(g) The permittee shall follow the startup or shutdown requirements given in Table 3 to 40 CFR, Part 63, Subpart UUUUU for EGU. [40 CFR s. 63.10011(g)]

[40 CFR s. 63.10011

, s. 285.65(13), Wis. Stats. ]

( 8 ) Continuous Co mpliance Demonstration: (a) The permittee shall demonstrate continuous compliance with each emissions limit in Table 2 to Subpart UUUUU (see condition I. B .7.a. ), each operating limit in Table 4 to subpart UUUUU (see
condition I. B .7.b.(4) ), and each work pr actice standard in Tables 3 to Subpart UUUUU (see
conditions I. B .7.a.(4) and I. B .7.b.(3)) that applies, according to the monitoring specified in Tables 6 and 7 to Subpart UUUUU as outlined below and
conditions I. B .7.b.(8)(b) through (g)

.

(i) If using CEMS to measure filterable PM, SO 2 , HCl, or Hg emissions, or using a sorbent trap monitoring system to measure Hg to demonstrate compliance with the applicable emission limitations
in I. B .7.a ., the permittee shall demonstrate continuous compliance by calculat ing the 30

- (or
90

- ) boiler operating day rolling arithmetic average emissions rate in units of the applicable emissions standard basis at the end of each boiler operating day using all of the quality assured hourly average CEMS or sorbent trap data for th e previous 30

- boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 1 of Table 7 to 40 CFR, Part 63, Subpart UUUUU]

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Mainten ance Requirements: (j) {...continued from previous page...}

(ii) Collect HAP metals CEMS hourly average output data for all boiler operating hours except as indicated in section (j)(iv) of this
condition.

(iii) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average HAP metals CEMS output data collected during all nonexempt boiler operating hours data.

(iv) The permittee shall collect data using the HAP metals CEMS at all times the process unit is operating a nd at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, and required monitoring system quality assurance or quality control activities.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the emission limit except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfuncti ons, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in calculations and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitoring system is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or control activities conducted during
out of control periods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) Any data recorded during periods of startup or shutdown. b) The permittee shall record and make available upon request
resul ts of HAP metals CEMS system performance audits, dates and duration of periods when the HAP metals CEMS is out of control to completion of the corrective actions necessary to return the HAP metals CEMS to operation consistent with the site

specific perform ance evaluation and quality control program plan. [40 CFR s. 63.10010(j)]

[40 CFR s. 63.10010

, s. 285.65(13), Wis. Stats. ]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 64

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpa rt UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (a) {...continued from previous page...}

(ii) If choosing to establish PM CPMS operating limits as allowed by I. B .7.b.(4 ) to demonstrate compliance with the emission limitations in
I. B .7.a.(1) (p articulate matter (PM), total non

mercury HAP metals, individual non

- mercury HAP metals), the permitee shall

a) Install, certify, maintain, and operate a PM CPMS for monitoring emi ssions discharged to the atmosphere according to 40 CFR s. 63.10010(g)(1) and b) Establish a site

- specific operating limit in units of PM CPMS output signal (e.g., milliamps, mg/acm, or other raw signal) using data from the
PM CPMS and the PM or HAP metal s performance tests according to the following procedures:

1) Collect PM CPMS output data during the entire period of the performance tests. 2) Record the average hourly PM CPMS output for each test run in the three run performance

test. 3) Determine the h ighest 1

- hour average PM CPMS measured during the performance test demonstrating compliance with the filterable
PM or HAP metals emissions limitations. [40 CFR s. 63.10021(a) , Table 6 to 40 CFR, Part 63, Subpart UUUUU] (iii) If using PM CPMS to measure c ompliance with a parametric operating limit, the permittee shall demonstrate continuous compliance by calculating
the arithmetic 30

- boiler operating day rolling average of all of the quality assured hourly average PM CPMS output data (e.g., milliamps, PM

c oncentration, raw data signal) collected for all operating hours for the previous 30 boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 2 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (iv) If using quarterly performance testing to measure compliance with one or more applicable
emissions limits in condition I. B .7.a ., the permitee shall demonstrate continuous compliance by calculating the results of the testing in units of the applicable emissio ns standard. [40 CFR s. 63.10021(a), item 4 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] ( 6 ) Continuous Compliance Demonstration

– Monitoring and Data
Collection: (a) The permittee shall monitor and collect data according to this
condition and the site

- specific monitoring plan required by 40 CFR

s. 63.10000(d).

(b) The permitee shall operate the monitoring system and collect data at all required intervals at all times that the affected EGU is operating, except for periods of monitoring system malfunction s or out

- of

control periods (see 40 CFR s. 63.8(c)(7)), and required monitoring system quality assurance or quality control activities, including, as applicable, calibration checks and required zero and span adjustments. The permittee is required to affect monitoring system repairs in response to monitoring system malfunctions and to return the monitoring system to operation as expeditiously as practicable.

(c) The permtitee may not use data recorded during EGU startup or shutdown or monitoring system malfu nctions or monitoring system

out

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, or required monitoring system quality assurance or control activities in calculations used to report em issions or operating levels. The permittee shall use all the data collected during all other periods in assessing the operation of the control device and associated control system.
(d) Except for periods of monitoring system malfunctions or monitoring syst em out

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, and required monitoring system quality assurance or quality control activities including, as applicable, calibration checks and

r equired zero and span adjustments), failure to collect required data is a deviation from the monitoring requirements.

[40 CFR s. 63.10020

, s. 285.65(13), Wis. Stats

. ]

( 7 ) Notification Requirements: (a) The permittee shall submit all of the notifications in 40 CFR, ss. 63.7(b) and (c), 63.8 (e), (f)(4) and (6), and 63.9 (b) through (h) that apply by the dates specified. [40 CFR ss. 63.9984(c) and 63.10030(a)]

(b) As specified in 40 CFR s. 63.9(b)(2), the permittee shall submit an
Initial Notification not l ater than 120 days after April 16, 2012. [40 CFR ss. 63.9984(c) and 63.10030(b)]

(c) {reserved}

(d) When required to conduct a performance test, the permittee shall submit a Notification of Intent to conduct a performance test at least 30 days before th e performance test is scheduled to begin. [40 CFR ss. 63.9984(c) and 63.10030(d)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 65

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pol lutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c

. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (a) {...continued from previous page...}

(v) When conducting periodic performance

tune

- ups of your EGU(s), the permittee shall demonstrate continuous compliance by conducting periodic performance tune

- ups of the EGU(s), as specified in 40 CFR s. 63.10021(e). [40 CFR s. 63.10021(a), item 5 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (vi) When complying with work practice standards during startup the permittee shall demonstrate continuous compliance by operating in accordance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 6 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (vii) When complying with work practice standards during shutdo wn, the permittee shall demonstrate continuous compliance by operating in accordance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 7 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] [40 CFR s. 63.10021(a)]

(b) Except as otherwi se provided in 40 CFR

s. 63.10020(c), if using a CEMS to measure SO 2 , PM, HCl, or Hg emissions, or using a sorbent trap monitoring system to measure Hg emissions, the permittee shall demonstrate continuous compliance by using all quality

- assured hourly
da ta recorded by the CEMS (or sorbent trap monitoring system) and the other required monitoring systems (e.g., flow rate, CO 2 , O 2 , or moisture systems) to calculate the arithmetic average emissions rate in units of the standard on a
continuous 30

- boiler op erating day (or, if alternate emissions averaging is used for Hg, 90

- boiler operating day) rolling average basis, updated at the end of each new boiler operating day. Use Equation 8 to determine the 30

- (or, if applicable,
90

- ) boiler operating day rolling average.

Where:

Her i is the hourly emissions rate for hour i and n is the number of hourly emissions rate values collected over
30

- (or, if applicable, 90

- ) boiler operating days. [40 CFR s. 63.10021(b)] ( 7 ) Notification Requirements: {...continued from previous page...} (e) When required to conduct an initial compliance demonstration as specified in 40 CFR s. 63.10011(a) , the permittee shall submit a Notification of Compliance Status according to 40 CFR s. 63.9(h)(2)(ii). The Notification of Compliance St atus report shall contain all the following information, as applicable:

(i) A description of the affected source(s) including identification of which subcategory the source is in, the design capacity of the source, a description of the add

- on controls used on the source, description of the fuel(s) burned, including whether the fuel(s) were determined by the permittee or EPA through a petition process to be a non

- waste under 40 CFR s. 241.3, whether the fuel(s) were processed from discarded non

hazardous sec ondary materials within the meaning of 40 CFR s. 241.3, and justification for the selection of fuel(s) burned during the performance test. (ii) Summary of the results of all performance tests and fuel analyses
and calculations conducted to demonstrate init ial compliance including all established operating limits. (iii) Identification of whether compliance with each applicable emission limit will be demonstrated through performance testing; fuel moisture analyses; performance testing with operating limits (e .g., use of PM CPMS); CEMS; or a sorbent trap monitoring system. (iv) Identification of whether compliance will be demonstrated by emissions averaging. (v) A signed certification that all applicable emission limits and work practice standards have been met

. (vi) If a deviation from any emission limit, work practice standard, or operating limit occurred, submit a brief description of the deviation, the duration of the deviation, emissions point identification, and the cause
of the deviation in the Notificati on of Compliance Status report. (vii) In addition to the information required in 40 CFR s. 63.9(h)(2), your notification of compliance status must include the following:

a) A summary of the results of the annual performance tests and documentation of any o perating limits that were reestablished during this test, if applicable. If stack tests are conducted once every 3 years consistent with 40 CFR s. 63.10006(b) , the date of the last three stack tests, a comparison of the emission level achieved in the
last three stack tests to the 50 percent emission limit threshold required in 40 CFR s. 63.10006(i) , and a statement as to whether there have been any operational changes since the last stack test that
could increase emissions. b) Certifications of compliance, as applicable, signed by a responsible official stating:

1. “This EGU complies with the requirements in 40 CFR,

s. 63.10021(a) to demonstrate continuous compliance.” and
2. “No secondary materials that are solid waste were combusted in any affected unit. ” [40 CFR ss. 63.9984(c) and 63.10030(e)

, s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 66

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Re gulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no la ter than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Mon itoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (c) If using a PM CPMS data to measure compliance with an operating limit in Table 4 to
S ubpart UUUUU

, The permitee shall record the PM CPMS output data for all periods wh en the process is operating and the PM CPMS is not out

of

- control. The permittee shall demonstrate continuous compliance by using all quality

assured hourly average data collected by the PM CPMS for all operating hours to calculate the arithmetic average o perating parameter in units of the operating limit (e.g., milliamps, PM concentration, raw data signal) on a 30 operating day rolling average basis, updated at the end of each new boiler operating day. Use Equation 9 to determine the 30 boiler operating da y average.

Where:

Hpv i is the hourly parameter value for hour i and n is the number of valid hourly parameter values collected over 30 boiler operating days. [40 CFR s. 63.10021(c)]

(d) If using quarterly performance testing to demonstrate compliance wit h one or more applicable emissions limits in 2 to Subpart UUUUU (see I. B .7.a. ), the permittee:

(i) May skip performance testing in those quarters during which less than 168 boiler operating hours occur, except that a performance
test must be conducted at l east once every calendar year. (ii) Shall conduct the performance test as defined in Table 5 to Subpart UUUUU and calculate the results of the testing in units of the applicable emissions standard; and [40 CFR s. 63.10021(d)]

{continued on next page...} ( 8 ) Reporting Requirements: (a) The permittee shall submit each report in Table 8 to 40 CFR, Part 63, Subpart UUUUU that applies. If required to (or electing to) continuously monitor Hg and/or HCl emissions, The permittee shall also submit the electronic repo rts required under Appendix A and/or Appendix B to Subpart UUUUU, at the specified frequency. [40 CFR s. 63.10031(a)]

(b) Unless the department has approved a different schedule for submission of reports under 40 CFR s. 63.10(a), the permittee shall
submi t each report semiannually and according to the following:

(i) The first compliance report shall cover the period beginning on the compliance date in I.B.7.a.(5) (the compliance date specified in 40
CFR s. 63.9984) and ending on either June 30 or December 31, whichever date is the first date that occurs at least 180 days after the specified compliance date. (ii) The first compliance report shall be postmarked or submitted electronically no later than either July 31 or January 31, whichever date
is the first date following the end of the first calendar half after the specified compliance date. (iii) Each subsequent compliance report shall cover the semiannual reporting period from January 1 through June 30 or the semiannual reporting period from July 1 throug h December 31. (iv) Each subsequent compliance report shall be postmarked or submitted electronically no later than July 31 or January 31, whichever date is the first date following the end of the semiannual reporting period. (v) The permitte may submit th e semiannual compliance reports along with the reports required by condition I.XXX.1.a., instead of according to the dates in paragraphs (i) through (iv), above. [40 CFR s. 63.10031(b), Table 8 to 40 CFR, Part 63, Subpart UUUUU]

(c) The compliance report s hall contain the following information:

(i) The information required by the summary report located in 40 CFR s. 63.10(e)(3)(vi). (ii) The total fuel use by each affected source subject to an emission limit, for each calendar month within the semiannual re porting period, including, but not limited to, a description of the fuel, whether the fuel
has received a non

- waste determination by EPA or your basis for concluding that the fuel is not a waste, and the total fuel usage amount
with units of measure. (iii) An indication of whether new types of fuel were burned during the reporting period. If new types of fuel were burned, the permittee shall include the date of the performance test where that fuel was in use. (iv) The date of the most recent tune

- up for eac h unit subject to the requirement to conduct a performance tune

- up according to 40 CFR

s. 63.10021(e), including the date of the most recent burner inspection if it was not done every 36 (or 48) months and was delayed until the
next scheduled unit shutdown

. [40 CFR s. 63.10031(c)]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 67

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstr ation: {...continued from previous page...} (e) When conducting periodic performance tune

- ups of your EGU(s), as specified below, perform the first

tune

- up as part of the initial compliance demonstration. Notwithstanding this requirement, you the permittee m ay delay the first burner inspection until the next scheduled unit outage provided the requirements of 40 CFR s. 63.10005 are met. Subsequently, the permittee shall perform an inspection of the burner at least once every 36
calendar months unless the EGU e mploys neural network combustion optimization during normal operations in which case the permittee shall perform an inspection of the burner and combustion controls at least once every 48 calendar months.

(i) As applicable, inspect the burner and combustio n controls, and clean or replace any components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required inspection period. Repair of a burner or combustion control component requiring special order parts may be scheduled as follows: a) Burner or combustion control component parts needing replacement that affect the ability to optimize NO X and CO must be installed
within 3 calendar months after the burner inspection, b) Burner or combust ion control component parts that do not affect the ability to optimize
NO X and CO may be installed on a schedule determined by the operator; (ii) As applicable, inspect the flame pattern and make any adjustments to the burner or combustion
controls necessa ry to optimize the flame pattern. The adjustment should be consistent with the manufacturer's specifications, if available, or in accordance with best combustion engineering practice for that burner type; (iii) As applicable, observe the damper operations as a function of mill and/or cyclone loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments and effecting repair to dampers, controls, mills, pulverizers, cyclones, and sensors;

{ continued on next page...} ( 8 ) Reporting Requirements: {...continued from previous page...} (d) For each excess emissions occurring at an affected source where a CMS is used to comply with that emission limit or operating limit, the permittee shall include the information required in 40 CFR

s. 63.10(e)(3)(v) in the compliance report specified in paragraph (c), above. [40 CFR s. 63.10031(d)]

(e) The permittee shall report all deviations as defined in 40 CFR, Part 63, Subpart UUUUU in the semiannual monitoring re port required condition I.XXX.1.a. If an affected source submits a compliance report pursuant to Table 8 to to Subpart UUUUU along with, or as part of, the semiannual monitoring report required by condition I.XXX.1.a., and the compliance report includes all required information concerning deviations from any emission limit, operating limit, or work practice requirement in this subpart, submission of the compliance report satisfies any obligation to report the same deviations in the semiannual monitoring r eport. Submission of a compliance report does not otherwise affect any obligation the affected source may have to report deviations from permit requirements to the permit authority. [40 CFR s. 63.10031(e)]

(f) As of January 1, 2012, and within 60 days aft er the date of completing each performance test, the permittee shall submit the results of the performance tests required by this subpart to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed thro ugh EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). Performance test data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) (see http://www.epa.gov/ttn/chief/ert/index.html ). Only data collected

us ing those test methods on the ERT Web site are subject to this requirement for submitting reports electronically to WebFIRE. Owners or operators who claim that some of the information being submitted for performance tests is confidential business informati on (CBI) must submit a complete ERT file including information claimed to be CBI on a compact disk or other commonly used electronic storage media (including, but not limited to, flash drives) to EPA. The electronic media must be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI Office, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Page Rd., Durham, NC
27703. The same ERT file with the CBI omitted shall be submitted to EPA via CDX as described earlier in this paragraph. The permittee
sha ll also submit these reports, including the confidential business information, to the department in the format specified by the department. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 68

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fir ed Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR , Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 2 85.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (e) {...continued from previous page...}

(iv) As applicable, evaluate windbox pressures and air pro portions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

- fuel ratio and ensure that it is correctly calibrated and functioning properly. Such inspection may include
calibr ating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers to ensure that the systems are operated as designed. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior to the next

tune

- up, should be corrected or repaired as

necessary; (vi) Optimize combustion to minimize generation of
CO and NO X . This optimization should be
consistent with the manufacturer's specifications, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners, overfire air controls, concentric firing system improvements, neural network or combustion efficiency s oftware, control systems calibrations, adjusting combustion zone temperature profiles, and add

- on controls such as SCR and SNCR; CO optimization includes burners, overfire air controls, concentric firing system improvements,
neural network or combustion ef ficiency software, control systems calibrations, and adjusting combustion zone temperature profiles; (vii) While operating at full load or the predominantly operated load, measure the
concentration in the effluent stream of CO and NO X in ppm, by volume, an d oxygen in volume percent,
before and after the tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments are made). You may use portable CO,
NO X and O 2 monitors for th is measurement. EGU's employing neural network optimization systems need only provide a single pre

- and post

- tune

- up value rather than continual values before and after each optimization adjustment made by the system;

{continued on next page...} ( 8 ) Reporti ng Requirements: (f) {...continued from previous page...} (i) Within 60 days after the date of completing each CEMS (SO 2 , PM, HCl, and Hg) performance evaluation test, as defined in 40 CFR s. 63.2 and required by Subpart UUUUU, the per mittee shall submit the relative accuracy test audit (RATA) data (or, for PM CEMS, RCA and RRA data) required by this subpart to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's
Ce ntral Data Exchange (CDX) ( www.epa.gov/cdx ). The RATA data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) ( http://www.epa.gov/ttn/chief/ert/index.html ). Only RATA data compounds listed on the ERT We b site are subject to this requirement. Owners or operators who claim that some of the information being submitted for RATAs is confidential business information (CBI) shall submit a complete ERT file including information claimed to be CBI on a compact di sk or other commonly used electronic storage media (including, but not limited to, flash drives) by registered letter to EPA and the same
ERT file with the CBI omitted to EPA via CDX as described earlier in this paragraph. The compact disk or other commonl y used electronic storage media shall be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI Office, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Page Rd., Durham, NC 27703. The permittee shall also submit these RATAs to the department in the format specified by the department. The permittee shall submit calibration error testing, drift checks, and other information required in the performance evaluation as
described in 40 CFR s. 63.2 and as required in 40 CFR.

(ii) For a PM CEMS, PM CPMS, or approved alternative monitoring using a HAP metals CEMS, within 60 days after the reporting periods ending on March 31st, June 30th, September 30th, and December 31st, the permitee submit quarterly reports to EPA's WebFIRE database by using the Complia nce and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). The permittee shall use the appropriate electronic reporting form in CEDRI or provide an alternate electronic file consistent with EPA's reporting form output format. For each reporting period, the quarterly reports must include all of the calculated 30

- boiler operating day rolling average values derived from the CEMS and PM CPMS. The permittee shall also submit these quarterly reports to the department in the format specified by the department.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 69

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. H azardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirem ents of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Meth ods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (e) {...continued from previous page...}

(viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in

paragrap hs (e)(1) through (e)(9) of this section including: a) The concentrations of CO and NO X in the effluent stream in ppm by volume, and oxygen in volume percent, measured before and after an adjustment of the EGU combustion systems; b) A description of any co rrective actions taken as a part of the combustion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally capable of using more than one type of fuel dur ing that period; and (ix) Report the dates of the initial and subsequent tune

- ups as follows: a) If the first required tune

- up is performed as part of the initial compliance demonstration, report the date of the

tune

- up in hard copy (as specified in 40 CFR s. 63.10030) and electronically (as specified in 40 CFR s. 63.10031). Report the date of each subsequent tune

- up electronically (as specified in 40 CFR s. 63.10031). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

- up and all subsequent tune

- ups electronically, in accordance with 40
CFR s. 63.10031. [40 CFR s. 63.10021(e)]

(f) The permittee shall submit the reports required under 40
CFR s. 63. 10031 and, if applicable, the reports required under Appendices A and B to Subpart UUUUU. The electronic reports required by Appendices A and B to Subpart UUUUU shall be sent to the EPA electronically, as provided in 40 CFR

s. 63.10031. CEMS data (except f or PM CEMS and any approved alternative monitoring using a HAP metals CEMS) shall be submitted using EPA's Emissions Collection and Monitoring Plan System (ECMPS) Client Tool. Other data, including PM CEMS data, HAP metals CEMS data, and CEMS performance t est detail reports, shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool, the Compliance and Emissions Data Reporting Interface, or alternate electronic file format, all as provided for
under 40 CFR s. 63.10031. T hese reports shall also be submitted to the department. [40 CFR s. 63.10021(f)]

{continued on next page...} ( 8 ) Reporting Requirements: (f) {...continued from previous page...} (iii) Reports for an SO 2 CEMS, a Hg CEMS or sorbent trap mo nitoring system, an HCl CEMS, and any supporting monitors for such systems (such as a diluent or moisture monitor) shall be submitted using the ECMPS Client Tool, as provided for in Appendices A and B to Subpart UUUUU and 40 CFR s. 63.10021(f). The permit tee shall also submit these to the department in the format specified by the department.

(iv) Submit the compliance reports required under paragraphs (c) and (d) of this condition and the notification of compliance status required under 40 CFR

s. 63.10030( e) to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). the permittee shall use the appropriate electronic reporting form in
CEDRI o r provide an alternate electronic file consistent with EPA's reporting form output format. The permittee shall also submit these compliance reports to the department in the format specified by the department.

(v) All reports required by 40 CFR, Part 63, S ubpart UUUUU not subject to the requirements in paragraphs (f)(1) through (4) of this condition must be sent to the Administrator at the appropriate address listed in 40 CFR

s. 63.13. If acceptable to both the Administrator and the owner or operator of a s ource, these reports may be
submitted on electronic media. The Administrator retains the right to require submittal of reports subject to paragraphs (f)(1), (2), and (3) of this condition in paper format. The permittee shall also submit these compliance

re ports to the department in the format specified by the department. [40 CFR s. 63.10031(f)]

(g) If the permittee had a malfunction during the reporting period, the compliance report must include the number, duration, and a brief description for each type of malfunction which occurred during the reporting period and which caused or may have caused any applicable emission limitation to be exceeded. [40 CFR s. 63.10031(g)] [40 CFR s. 63.10031

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 70

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fi red Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (g) The permittee shall report each instance in which an applicable emissions limit or operating limit in Tables 2 through 4 to Subpart UUUUU (I.A.7.a.) was not met or a required tune

- up was not conducted. These instances are deviations from the requirements of Subpart UUUUU. Th ese deviations shall be reported according to 40 CFR s. 63.10031. [40 CFR s. 63.10021(g)]

(h) The permittee shall keep records as specified in
40 CFR s. 63.10032 during periods of startup and shutdown. [40 CFR s. 63.10021(h)]

(i) The permittee shall prov ide reports as specified in
40 CFR s. 63.10031 concerning activities and periods of startup and shutdown. [40 CFR s. 63.10021(i)]

[40 CFR s. 63.10021 , s. 285.65(13), Wis. Stats. ]

( 9 ) Continuous Compliance Demonstration

– Emissions Averaging Provision: ( a) Following the compliance date, the permittee shall demonstrate compliance with Subpart UUUUU on a continuous basis by meeting the following: (i) For each 30

- (or 90

- ) day rolling average period, demonstrate compliance with the average weighted emissions limit for the existing units participating in the emissions averaging option as determined in 40 CFR s. 63.10009(f) and (g); (ii) For each existing unit participating in the emissions averaging option that is equipped with PM CPMS, maintain the average pa rameter value at or below the operating limit established during the most recent performance test; (iii) For each existing unit participating in the emissions averaging option venting to a common stack configuration containing affected units from
other sub categories, maintain the appropriate operating limit for each unit as specified in Table 4 to Subpart UUUUU that applies. (b) Any instance where the permittee fails to comply with the continuous monitoring requirements in paragraphs (a) of this condition i s a deviation. [40 CFR s. 63.10022

, s. 285.65(13), Wis. Stats

. ] ( 9 ) Recordkeeping Requirements: (a) The permittee shall keep records according to the following. If required to (or electing to) continuously monitor Hg and/or HCl emissions, the permittee shall also keep the records required under Appendix A and/or Appendix B to 40 CFR, Part 63, Subpart UUUUU. (i) A copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any Initial Notific ation or Notification of Compliance Status or semiannual compliance report that you submitted, according to the requirements in 40 CFR s. 63.10(b)(2)(xiv). (ii) Records of performance stack tests, fuel analyses, or other compliance demonstrations and perfo rmance evaluations, as required in 40 CFR s. 63.10(b)(2)(viii). [40 CFR s. 63.10032(a)]

(b) For each CEMS and CPMS, the permittee shall keep records according to the following: (i) Records described in 40 CFR s. 63.10(b)(2)(vi) through (xi). (ii) Previous ( i.e. , superseded) versions of the performance evaluation plan as required in 40 CFR s. 63.8(d)(3). (iii) Request for alternatives to relative accuracy test for CEMS as required in 40 CFR s. 63.8(f)(6)(i). (iv) Records of the date and time that each deviat ion started and stopped, and whether the deviation occurred during a period of startup, shutdown, or malfunction or during another period. [40 CFR s. 63.10032(b)]

(c) The permittee shall keep the records required in Table 7 to 40 CFR, Part 63, Subpart UUUU U including records of all monitoring data and calculated averages for applicable PM CPMS operating limits to show continuous compliance with each emission limit and operating limit that applies to you. [40 CFR s. 63.10032(c)]

(d) For each EGU subject to an emission limit, the permittee shall also keep the following records: (i) The permittee shall keep records of monthly fuel use by each EGU, including the type(s) of fuel and amount(s) used. (ii) If combusting non

- hazardous secondary materials that have
b een determined not to be solid waste pursuant to 40 CFR 241.3(b)(1), the permittee shall keep a record which documents how the secondary material meets each of the legitimacy criteria. If combusting a fuel that has been processed from a discarded non

hazar dous secondary material pursuant to 40 CFR 241.3(b)(2), the permittee shall keep records as to how the operations that produced the fuel satisfies the definition of processing in 40 CFR 241.2. If the
fuel received a non

- waste determination pursuant to the petition process submitted under 40 CFR 241.3(c), the permittee shall keep a record which documents how the fuel satisfies the requirements of the petition process. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 71

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460. 05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 10 ) Establishing and Determining Compliance with a PM CPMS Operating Limit: (a) During the initial performance test or any such subsequent performance test that demonstrates compliance with the filterable PM, individual non

mercury HAP metals, or total non

- mercury HAP
metals limit in I. B .7.a.(1) , record all hourly average output values (e.g., milliamps, stack concentration,

o r other raw data signal) from the PM CPMS for the periods corresponding to the test runs (e.g., nine 1

- hour average PM CPMS output values for three 3

- hour test runs). (b) Determine the operating limit as the highest 1

- hour average PM CPMS output value reco rded during the performance test. The permittee shall verify an existing or establish a new operating limit after each repeated performance test. (c) The permittee shall operate and maintain the process and control equipment such that the 30 operating day average PM CPMS output does not exceed the operating limit determined in paragraphs (a) and (b) of this condition

. [40 CFR s. 63.10023

, s. 285.65(13), Wis. Stats

. ]

( 11 ) General Provisions: The permittee is subject
to the General Provisions of 40 CFR ss. 63.1 through 63.15 as shown in Table 9 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10040

, s. 285.65(13), Wis. Stats. ]

(12) Affirmative defense for exceedence of emission limit during malfunction : In response to
an action to enforce the standards s et forth in 40 CFR s. 63.9991 the permittee may assert an affirmative defense to a claim for civil penalties for exceedances of such standards that are caused by malfunction, as defined at 40 CFR s. 63.2. Appropriate penalties may be assessed, however, if the permittee fails to meet all burden of proving all of the requirements in
the affirmative defense. The affirmative defense shall not be available for claims for injunctive relief.

{continued on next page...} ( 9 ) Recordkeeping Requirements: (d) {...continued from previous page...} (iii) For an EGU that qualifies as an LEE under 40 CFR

s. 63.10005(h), the permittee shall keep annual records that document that emissions in the previous stack test(s) continue to qualify the unit for LEE status for an applicable pollutant, and document that there was no change in source operations including fuel composition and operation of air pollution control equipment that would cause emissions of the pollutant to increase within the past year. [40 CFR s. 63.10032(d)]

(e) If electing to average emissions consistent with 40 CFR

s. 63.10009, the permittee must additionally keep a copy of the emissions averaging implementation plan required in 40 CFR

s. 63.10009(g), all calculations required under 40 CFR s

. 63.10009, including daily records of heat input or steam generation, as applicable, and monitoring records consistent with 40 CFR s. 63.10022. [40 CFR s. 63.10032(e)]

(f) The permitee shall keep records of the occurrence and duration of each startup and /or shutdown. [40 CFR s. 63.10032(f)]

(g) The permittee shall keep records of the occurrence and duration of each malfunction of an operation ( i.e. , process equipment) or the air pollution control and monitoring equipment. [40 CFR s. 63.10032(g)]

(h) T he permitee shall keep records of actions taken during periods of
malfunction to minimize emissions in accordance with 40 CFR

s. 63.10000(b), including corrective actions to restore malfunctioning process and air pollution control and monitoring equipment to its normal or usual manner of operation. [40 CFR s. 63.10032(h)]

(i) The permitee shall keep records of the type(s) and amount(s) of fuel used during each startup or shutdown. [40 CFR s. 63.10032(i)]

[40 CFR s. 63.10032

, s. 285.65(13), Wis. Stats. ]

( 10 ) Records (Form and Retention): (a) Records must be in a form suitable and readily available for expeditious review, according to 40 CFR s. 63.10(b)(1). (b) As specified in 40 CFR s. 63.10(b)(1), the permitee shall keep each record for 5 years following the date of each occurrence, measurement, maintenance, corrective action, report, or record. (c) The permittee shall keep each record on site for at least 2 years after the date of each occurrence, measurement, maintenance, corrective action, report, or r ecord, according to § 63.10(b)(1). The permittee may keep the records off site for the remaining 3 years. [40 CFR s. 63.10033

, s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 72

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler R ated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5)

. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis.
Stats. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (12) Affirmative defense for exceedence of emission limit during
malfunction : {...continued from previous page...} (a) To establish the affirmative defense in any action to enforce such a limit, the permittee shall timely meet the notification requirements in paragraph (b) of this condition, and must prove by a preponderance of evidence that:

(i) The excess emissions:

a) Were caused by a sudden, infrequent, and unav oidable failure of air pollution control and monitoring equipment, process equipment, or a process to operate in a normal or usual manner,
and b) Could not have been prevented through careful planning, proper design or better operation and maintenance prac tices; and c) Did not stem from any activity or event that could have been foreseen and avoided, or planned for; and d) Were not part of a recurring pattern indicative of inadequate design, operation, or maintenance; and (ii) Repairs were made as expeditio usly as possible when the applicable emission limitations were being exceeded. Off

- shift and overtime labor were used, to the extent practicable to make these repairs; and (iii) The frequency, amount and duration of the excess emissions (including any bypa ss) were minimized to the maximum extent practicable during periods of such emissions; and (iv) If the excess emissions resulted from a bypass of control equipment or a process, then the bypass was unavoidable to prevent loss of life, personal injury, or s evere property damage;
and (v) All possible steps were taken to minimize the impact of the excess emissions on ambient air quality, the environment and human health; and (vi) All emissions monitoring and control systems were kept in operation if at all pos sible, consistent with safety and good air pollution control practices; and (vii) All of the actions in response to the excess emissions were documented by properly signed, contemporaneous operating logs;
and (viii) At all times, the affected source was op erated in a manner consistent with good practices for minimizing emissions; and (ix) A written root cause analysis has been prepared, the purpose of which is to determine, correct, and eliminate the primary causes of
the malfunction and the excess emission s resulting from the malfunction event at issue. The analysis shall also specify, using best monitoring methods and engineering judgment, the amount of excess
emissions that were the result of the malfunction.

{continued on next page...} ( 11 ) Emissions Aver aging to Comply with 40 CFR, Part 63, Subpart UUUUU: The permittee may use the emission averaging described in 40 CFR s. 63.10009 to comply with Subpart UUUUU, if all the criteria in that section are met. [40 CFR s. 63.10009

, s. 285.65(13),
Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 73

B. Stack S03, Boiler B03, Control Device C03A

– Weston Unit 3

- Coal Tangentially Fired Boiler Rated at 3423.48
mmBtu/hr

- (CONTINUED)

Pollutant: 7. Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standar ds for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than the compliance date in I.B.7.a.(5). [40 CFR, ss. 63.9982(a )(1), 63.9982(d), and s. 63.9984(b)
, s. 112(i)(3) CAA, s. NR 460.05(7), Wis. Adm. Code, s. 285.65(13), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (12) Affirmative defense for exceedence of emission limit d uring
malfunction : {...continued from previous page...} (b) Notification. When experiencing an exceedance of its emission limit(s) during a malfunction, the permittee shall notify US EPA and the department by telephone or facsimile (FAX) transmission as

soon as possible, but no later than two business days after the initial occurrence of the malfunction or, if it is not possible to determine within two business days whether the malfunction caused or contributed to an exceedance, no later than two business day s after the permittee knew or should have known that the malfunction caused or contributed to an exceedance, but, in no event later than two business days after the end of the averaging period, if it wishes
to avail itself of an affirmative defense to civi l penalties for that malfunction. When seeking to assert an affirmative defense, the permittee shall also submit a written report to US EPA and the department within 45 days of the initial occurrence of the
exceedance of the standard in 40 CFR s. 63.9991 t o demonstrate, with all necessary supporting documentation, that it has met the requirements set forth in paragraph (a) of this condition. The permittee may seek an extension of this deadline for up to 30 additional days by submitting a written request to US EPA and the department before the expiration of the 45 day period. Until a request for an extension has been approved by US EPA and the department, the permittee is subject to the requirement to submit such report within 45 days of the initial occurrenc e of the
exceedance.

[40 CFR s. 63.10001, s. 285.65(13), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 74

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– Installed 7/1/2008 Additional Fuels: Natural Gas. Controlled by: Baghouse with FGD and SCR systems

Pollutant: 1. Particulate Matter Emissions (PM) and Particulate Matter Emissions less than 10 microns (PM 10 )

a. Limitations: (1) Best Available Control Technology (BACT): (a) Particulate matter emissions (PM) may not exceed 0.02 pound per million Btu heat input (103.52 pounds per hour) averaged over any consecutive 3

– hour period. 36
(b) Particulate matter emissions less than 10 microns (PM10) may not exceed 0.018 pound per mil lion Btu heat input averaged over any consecutive 3

– hour period. [ s . NR 405.08(2), Wis. Adm. Code; s. NR 440.20(3), Wis. Adm. Code; s. 285.65(3), Wis. Stats.

, 03

- RV

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, 40 CFR s.
60.42Da ]

(2) Particulate matter emissions may not exceed 0.10 pounds p er million Btu heat input. [s. NR 415.06(2)(c), Wis. Adm. Code]

(3) See also condition I.C.15.a.(1). b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Particulate matter emissions shall be controlled using a
fabric fi lter baghouse system to meet the BACT emission limit. [ s. NR 405.08(2), Wis. Adm. Code]

(2) The fabric filter baghouse system required by I.C.1.b.(1) shall be in line and shall be operated at all times when the boiler is in operation 37 and coal is being fired. [ss. NR 406.10 and NR 407.09(4)(a).1, Wis. Adm. Code and 03

- RV

248

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(3) The permittee shall perform compliance emission tests to demonstrate compliance with the PM and PM10 emission limitations in condition I.C.1.a.(1) as follows: (a) Compl iance emission tests shall be conducted every 24 months within 90 days from the date of the last stack test as long as the permit remains valid. (b) The tests shall be conducted in accordance with
I.XXX.3.a. (c) The permittee shall perform simultaneous m onitoring of the parameters identified in I.C.1.c.(2). [ss. NR 407.09(4)(a), NR 439.075(2)(c) and NR 439.075(3)(b), Wis. Adm. Code, ss. 285.65(3) and (10), Wis.
Stats. and 03

- RV

- 248

- R5]

(5) The total heat input capacity for all natural gas heaters
on B04 may not exceed 500 mmBtu/hr when the baghouse is
not on line. This condition is established to ensure the particulate matter limit is not exceeded when natural gas is fired in the boiler and the baghouse is not on line. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

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- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission testing is required, the following test methods and procedures shall be used to demonstrate compliance: (a) The dry basis F factor (O2) procedures in Method 19 shall be used to compute the emission rate of particulate matter. (b) For the particulate matter concentration, US EPA Method 5
shall be used. For the PM

- 10 concentration, US EPA Method 201
or 201A shall be used. (c) The particulate matter co ncentration testing in ( b ) shall include condensible backhalf emissions determined using Method 202, or Method CTM 039, (d) As an alternative to Method 5, Method 17 may be used if the stack temperature at the sampling location does not exceed an

average temperature of 320 degrees F. (e) The Fc Factor (CO2) procedures in Method 19 may be used to compute the emission rate of particulate matter under the stipulations of s. NR 440.19(7)(d)1. The CO2 shall be determined
in the same manner as the O2 concentra tion. (f) Alternate methods may be use only if approved by the Department in writing. [s. NR 439.06(1) and (1m) , Wis. Adm. Code; s. NR (8)(b), Wis. Adm. Code; s. 285.65(7), Wis. Stats.

, 03

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, 40 CFR s. 60.50Da(b) ]

36 The boiler is subject to New Source Performance Standards (NSPS) requirements for particulate matter under s. NR 440.20(3), Wis. Adm. Code which limits particulate matter emissions to 0.03 pound per million Btu and 99% reduction when combusting solid fuel. The BACT limit for particulate matter is more restrictive then the particulate matter emission limits under NSPS, thus the boiler is expected to meet the NSPS particulate matter emission limits when meeting BACT

.

37 Boiler operation (as it relates t o baghouse operation) is any time the draft ID fan(s) are in operation. See normal start

- up and
shut

- down sequence in condition I.C.9.b.(3).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 75

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 1. Particulate Matter Emissions (PM) and Particulate Matter Emissions less than 10 microns (PM 10 )

- {CON TINUED] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) The permittee shall perform periodic internal inspections of the baghouse to ensure that the control equipment is operating properly. The time interval
between ins pections may not exceed 13,140 operating hours unless written approval from the Department is granted allowing for a greater interval. Such a request may only be granted if the applicant demonstrates that such
an interval is needed to maintain a
stable el ectric power supply. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code]

(7) The permittee shall calibrate instruments used for measuring the baghouse operational parameters identified in I.C.1.b.(4) once every 13,140 hours of operation, unless an
alternative sch edule is approved by the department in writing. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code]

(8) The permittee shall perform periodic inspections of the boiler to ensure optimum boiler performance using a qualified inspector. Specific items that
should be inspected include, but are not limited to, firebox, boiler tubes, refractory, burner conditions, boiler backpass, boiler
cleanliness and overall boiler
condition. The time interval between inspections may not exceed 13,140 hours of operation,
unless the d epartment approves a request for an extension in writing. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code] (2) (a) The permittee shall continuously monitor the operating pressure drop across the fabric filter system and shall sound an audible alarm, whenever the operating pressure drop is below the minimum pressure drop identified in I.C.1.b.(9)(e). (b) The permittee shall continuously record the pressure drop across the fabric filter system, except as provided in I.C.1.c.(2)(c) below. (c) In the event the conti nuous pressure drop recording equipment malfunctions, the permittee shall diligently work to return equipment to operation as soon as practicable and manually record the pressure drop across the fabric filter system once every 8 hours of source operation o r once per day while the unit is operating, whichever yields the greater number of measurements, until the continuous recorder is returned to service. [ s. NR 439.055(5), Wis. Adm. Code and 04

- RV

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- R 6 ]

(3) (a) The permittee shall maintain records of any investigative and corrective action taken as a result of an alarm indicating a differential pressure drop reading outside the indicator range in condition I.C.1.b.(9)(b), that include: (i) date and time of the alarm; (ii) a description of the investigati ve actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code] (b) The permittee shall maintain records of any investigative and corrective action taken as a result of an alarm indicating a n opacity reading , average d over any consecutive 3

- hour period, that exceeds the range in I.C.2.b.(9)(e), that include: (i) date and time of the alarm; (ii) a description of the investigative actions taken; and (iii) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code] [s. NR 439.055(5), Wis. Adm. Code, 06

- SDD

- 102]

(4) Upon detecting an excursion or exceedance of the ranges specified in condition I.C.1.b.(9) (b) and (e), the permittee shall respond to every “out of range” alarm by restoring operation of the b aghouse to its normal or usual manner of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [40 CFR 64.7(d)(1), s. 285.65(3), Wis. Stats. and 04

- RV

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(5) The permittee shall maintain records of: (a) The results of the compliance emission tests required by condition I.C.1.b.(3); and (b) The parameter monitoring and associated operating ranges for the parameters identified in condition I.C.1.c.(2) as recorded during the compli ance emission tests required by condition I.C.1.b.(3). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

(6) The permittee shall retain appropriate records on the manufacturer’s design specifications information for the natural gas burners to demonst rate compliance with permit condition I.C.1.b.(5). [s. 285.65(7), Wis. Stats., s. 285.65(10), Wis. Stats. and 03

- RV

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(7) The permittee shall maintain records of: (a) the date, time, and initials of the person performing the inspections required by I.C.1.b.(6); (b) a list of the items inspected; (c) any maintenance or repairs performed as a result of these inspections; (d) the operating hours of the boiler since the last inspection; and (e) the date, time and initials of the person performing the cal ibrations required by I.B.1.b.(7). [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 76

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 1. Particulate Matter Emissions (PM) and Particulate Matter Emissions less than 10 microns (PM 10 )

- {CONTINUED] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (9) Compliance Assurance Monitoring (CAM) Require ments: Boiler B04 is a pollutant

- specific emissions unit for particulate matter emissions and is subject to the CAM requirements of Part 64 CFR. As such the boiler is subject to the CAM requirements in Part IV and section I.XXX.9. of this permit, and as follows: (a) Whenever the boiler is operating, the permittee shall monitor differential pressure drop across the fabric filter baghouse system as an indicator of control equipment performance, using electronic pressure
transmitters located at the inlet an d the outlet of the baghouse.; (b) The indicator range for differential pressure drop across the baghouse controlling B04 is 2.0 to 10.0 inches of water; (c) The permittee shall monitor opacity as a secondary indicator of baghouse performance using a co ntinuous opacity monitoring system (COMS) that meets the requirements I.C.2.c.(2) through (4); (d) The permittee shall use the data collected by the COMS to calculate opacities for the boiler, averaged over each consecutive 3

- hour period; (e) The indicato r range for visible emissions from B04 is 10% opacity or
less

, averaged over each consecutive 3

- hour period; (f) An excursion is:

(i) a differential pressure drop reading outside the indicator range in condition I.C.1.b.(9)(b); OR (ii) any opacity read ing that exceeds the range in I.C.2.b.(9)(e), as averaged over any consecutive 3

- hour period. (g) The permittee shall operate an alarm system to notify the operator if the differential pressure drop across the baghouse is outside the range specified in co nditions I.C.1.b.(9)(b). If an alarm occurs, the permittee shall take appropriate investigative and corrective action. (h) The permittee shall operate an alarm system to notify the operator if visible emissions exceed the opacity specified in conditions I.C.1.b.(9)(e). If an alarm occurs, the permittee shall take appropriate investigative and corrective action. (i) The quality improvement plan (QIP) threshold is reached when excursions occur for more than 5% of the boiler’s operating time in a six
month reporting period; (j) The permittee shall operate the COMS in accordance with 40 CFR ss. 64.7 and 64.8 as detailed in conditions I.XXX.a.(2) and (4). [s. 285.65(13), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b. and NR s. 439.0 5 5(5), Wis. Adm. Code, and 40 C FR ss. 64.2, 64.3, 64.6, 64.7, and
64.8 and 06

- SDD

- 102] (8) The permittee shall maintain records of: (a) the date, time, and initials of the person performing the inspections required by I.B.1.b.(8); (b) a list of the items inspected; (c) any maintenance, repairs or adjustments performed as a result of these inspections; and (d) the operating hours of the boiler since the last inspection. [s. NR 439.04(1)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 77

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

a. Limitations: (1) Best Available Control Technology (BACT): 38
(a) Emissions may not exceed: 39
(i) 0.10 pound per million Btu hea t input for all periods, including startup, shut down and routine atomizer change out, averaged over any consecutive 30

- day period, and (ii) 0.09 pound per million Btu heat input for all periods, including startup, shut down and routine atomizer change ou t, averaged over any 12 consecutive months.

(b) Periods of Scheduled Maintenance of Sulfur Control System: Emissions may not exceed the following on days when scheduled maintenance of the sulfur control system is performed (e.g. atomizer change out). 40 These limitations are applicable only during periods when this maintenance is performed. (i) 3491.8 pounds per hour on a 3

- hour average, and (ii) 1508.9 pounds per hour on a 24

- hour average.

(c) Emissions shall be controlled to a level that is 90% contr ol for all periods when coal is fired, excluding periods of scheduled maintenance (e.g. atomizer change out) averaged over any consecutive 30

- day period, measured using methods described by condition I.C.2.b.(5)(c).

(d) The uncontrolled sulfur dioxide emi ssion content of the coal may not exceed 1.23 pounds per million Btu, averaged over any consecutive 30

- day period.

(e) When determining compliance with the limits on an hourly and daily average, the permittee shall only include hours and days when the boi ler operated.

[ss. NR 405.08(2) and NR 440.20(4), Wis. Adm. Code, ss. 285.63(1)(b) and 285.65(3), Wis. Stats., 03

- RV

- 248

- R4

, 40 CFR s.
60.43Da ]

(2) To ensure compliance with PSD increments and NAAQS, emissions may not exceed the following on days when no scheduled routine maintenance of the sulfur control system (i.e. atomizer change out) is performed: 41
(a) 621 pounds per hour averaged over any consecutive 3

- hour period, and (b) 589 pounds per hour average over any consecutive 24

- hour period. [s. 285. 65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR) Requirements: Boiler B04 is subject to the SO2 CAIR requirements. As such, the permittee shall comply with the CAIR requirements as outli ned in section I.XXX.8. and in the CAIR Permit Application (for sources subject to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit and 40 CFR 97.121, 97.122, 97.2 21, 97.222, 97.321 and
97.322. OR alternately, when in effect, comply with the Cross

- State Air Pollution Rule requirements, as applicable, as required
in section I.XXX.8.

38 The boiler is subject to NSPS requirement for sulfur dioxide under s. NR 440.20(4), Wis. Adm. Code. The NSPS li mit for sulfur dioxide varies depending upon fuel sulfur content, with either a 90% reduction and 1.2 0 pound per million Btu limitations or a 70% reduction when emissions are below 0.60 pound per million Btu. The NSPS limits apply at all times except duri ng periods of startup and shut down. The optional determination in s. NR 440.20(8)(c) may be used to demonstrate compliance with the NSPS sulfur dioxide standards if fuel pretreatment is utilized. The BACT limits for sulfur dioxide are
more restrictive t h a n the sulfur dioxide emission limits under NSPS, thus the boiler is expected to meet the NSPS sulfur dioxide
emission limits while meeting BACT

.

39 Only hours when the boiler is operated shall be included in the averages in I.C.2.a.(1).

40 The permitte e indi cated in their application that the optimum time between routine atomizer changeouts would not be more frequent than 1000 hours.

41 These conditions are established to ensure compliance with PSD increments and NAAQS. At these emission rates the air quality standards are expected to be protected. These limits are applicable to days when no scheduled maintenance of the sulf ur control system ( e.g. atomizer change out) is required.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 78

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

-- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Sulfur dioxide emissions shall
be c ontrolled by the use of dry flue gas desulfurization (FGD) system to meet the BACT emission limits. [s. NR 405.08(2), Wis. Adm. Code and
03

- RV

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- R4]

(2) When operating the boiler during periods when the SO2

CEMs is not operating

, 42 the permittee shall maintain the flow rate of the aqueous lime/recycled ash slurry to the FGD system at
not less than 50 gallons per minute per side and not less than
100 gallons per minute total, averaged over each 24

- hour period the boiler is operated 43 or until the CEM is returned to
service (excluding periods of flushes, startup, shutdown, and maintenance), or the value established during the most recent
stack test that demonstrated compliance with the emission limitation in I.C.2.a.(1), if approved by the department in

wr iting. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3),
Wis. Stats. and 03

- RV

- 248

- R4]

(3) The boiler shall be fired on low sulfur powder river basin coal and natural gas only. [ss. NR 405.08(2) and NR 406.10, Wis. Adm. Code; s. 285.65(3), Wis.
Stats a nd 03

- RV

- 248

- R4] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever compliance emission testing is required, US EPA Method 6, 6A or 6C or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall retain a copy of the department approved coal mine sampling and analysis protocol. The permittee shall submit any changes to this protocol for department approval. [s. NR 439.04(1)(d), Wis. Adm. Co de]

(3) Continuous Emission Monitoring Requirements: (a) The permittee shall calibrate, maintain and operate a continuous emission monitoring system, and record the output of the system, for measuring sulfur dioxide emissions. (b) The permittee shall cal ibrate, maintain and operate a continuous emission monitoring system, and record the output of the system for measuring oxygen or carbon dioxide content of the flue gases at each location where sulfur dioxide emissions are monitored. (c) The permittee shal l calibrate, maintain and operate continuous SO2 emission monitors located at the inlet and outlet to the SO2 control device to measure the control efficiency of the SO2 control device. The permittee shall record the output of these systems. [s. NR 440.2 0(7)(b) and (d), Wis. Adm. Code, s. 285.65(10), Wis. Stats.

, 03

- RV

- 248

- R4

, 40 CFR s. 60.49Da(b) and (d) ] (d) Continuous emissions monitoring systems shall be installed and operated in accordance with 40 CFR Part 75, s. NR 440.20(7)(b), Wis. Adm. Code

, s. N R 439.06(2),
Wis. Adm. Code , and 40 CFR s. 60.49Da(b)

. (e) The continuous monitoring systems required by I.C.2.c.(3)(a), (b) and (c) shall be operated and data recorded during all periods of boiler operation including periods of startup, shutdown, malfun ction or emergency conditions except for continuous monitoring system breakdowns, repairs, calibration checks and zero and span adjustments. [s. NR 440.20(7)(e), Wis. Adm. Code and 40 CFR s. 60.49Da(e) ] (f) The permittee shall obtain emission data for at least 18 hours in at least 22 out of 30 successive boiler operating days. If this minimum data requirement cannot be met with a continuous monitoring system, the permittee shall supplement emission data with other monitoring systems approved by the depar tment. [s. NR 440.20(7)(f), Wis. Adm. Code
and 40 CFR s. 60.49Da(f) ] (g) One hour averages shall be computed from 4 or more data points equally spaced over
each one

- hour period and shall be expressed in lbs/mmBtu heat input and used to calculate
the avera ge emission rates in I.C.2.b.(6). At least 2 data points shall be used to calculate
the one

- hour averages. [ss. NR 440.13(8) and NR 44.20(7)(g), Wis. Adm. Code] (h) When it becomes necessary to supplement continuous monitoring system data to meet
the mi nimum data requirements in I.C.2.c.(3)(f), the permittee shall use the reference methods and procedures specified in s. NR 440.20(7)(h) ( 40 CFR s. 60.49Da(h) ) or the acceptable alternative methods and procedures given in s. NR 440.20(7)(j), Wis. Adm.
Code ( 40 CFR s. 60.49Da(j) ) . [s. NR 440.20(7)(h), Wis. Adm. Code and 40 CFR s. 60.49Da(h) ] (i) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent

oxygen may be substituted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0

per cent oxygen, as described in 40 CFR Part 75 Appendix F Section 3.3.4.1. [03

- RV

248

- R4]

42 This approach is utilized during periods when the SO2 CEMS is not oper ating, to demonstrate continuous compliance, provided the CEMS meets the requirements of 40 CFR Part 75, s. NR 440.20(7)(b), Wis. Adm. Code, s. NR 439.06(2), Wis. Adm. Code, and 40 CFR s. 60.49Da(b).

43 Only hours when the boiler is operated shall be inclu ded in the average in I.C.2.b.(2)

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 79

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

-- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (4) Compliance Demonstration for Coal Sulfur Dioxide
Content: (a) The permittee shall demonstrate compliance with the coal sulfur dioxide content limit in I.C.2.a.(1)(d) by utilizing coal sampling and analysis of the coal as it is shipped from the
mine. (b) In the event that mine sampling and analysis is unavailable, the permittee shall use as received fuel sampling
and anal ysis procedures in accordance with s. NR 439.08, Wis. Adm. Code or other analysis procedures approved in writing by the department to demonstrate compliance with
this limit. (d) In lieu of fuel sampling and analysis, the permittee may demonstrate complia nce with the coal sulfur dioxide content limit in I.C.2.a.(1)(d) by using emissions data measured by the continuous emission monitoring system at the inlet to the FGD system required by I.C.2.c.(3)(c). [s. 285.65(3), Wis. Stats., ss. NR 407.09(4)(a) and N R 439.08, Wis. Adm. Code, and 03

- RV

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(5) The permittee shall demonstrate compliance with the sulfur dioxide emission limits contained in I.C.2.a.(1)(a), I.C.2.a.(1)(b)(i) and (ii), and I.C.2.a.(2) using emissions data measured by the continuous em ission monitoring system required by I.C.2.c.(3) as follows 44 : (a) Daily average concentration shall be calculated each calendar day by combining the sulfur dioxide concentration and diluent concentration (in % O2 or % CO2) measurement consistent with the p rocedures specified in 40 CFR Part 75 Appendix F. 12 consecutive months concentrations shall be calculated based on the calculations of the daily
concentrations. (b) The permittee shall use CEMs data for B04 to demonstrate compliance with emission limits in I.C.2.a.(1)(b)(i) and (ii). (c) Continuous SO2 emission monitors located at the inlet and
outlet to the SO2 control device shall be used in accordance with 40 CFR Part 75 to demonstrate compliance with I.C.2.a.(1)(c), whenever coal is fired. [ss. 285. 65(3) and (10), Wis. Stats. and 03

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- R4] (4) During operation the permittee shall monitor and record the flow rate of the aqueous lime/recycled ash slurry to the dry flue gas desulfurization (FGD) system once every 8 hours of operation or once per da y, whichever yields the greater number of measurements. [ss. NR 439.04(1)(d) and NR 439.055(1)(a), Wis. Adm. Code and 03

- RV

- 248

- R4]

(5) The permittee shall submit quarterly reports to the Department on the information required under condition I.C.2.b.(4) for each train load of coal received during the calendar quarter. These reports shall include the mine of origin of each train load of coal. [ss. 285.65(3) and (10), Wis.
Stats. and 03

- RV

- 248

- R4]

(6) The permittee shall maintain records of: (a) Daily a verage SO2 emission rates as determined in I.C.2.b.(6)(a), in lbs/mmBtu; (b) 30

- day average SO2 emission rates for each 30 successive boiler operating day period as determined in I.C.2.b.(6)(b), in lbs/mmBtu; (c) 12

- month average SO2 emission rates for e ach 12 consecutive month period as determined in I.C.2.b.(6)(c), in lbs/mmBtu; (d) 30

- day average SO2 control level for each 30 consecutive day period as determined in I.C.2.b.(9), in percent (e) hourly average SO2 emission rates as determined in
I.C.2. b.(6)(e), in pounds per hour; (f) 3

- hour average SO2 emission rates as determined in I.C.2.b.(6)(e), in pounds per hour; (g) 24

- hour average S02 emission rates as determined in I.C.2.b.(6)(f), in pounds per hour [s. 285.65(3), Wis. Stats, s. NR 439.04(1)( d), Wis. Adm.
Code and 03

- RV

- 248

- R4]

44 The boiler is exempt from periodic compliance emission tests required by ss. NR 439.075(2)(a)2., and (3)(b), Wis. Adm. Code provided they operate a continuous sulfur dioxide emission monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code, pursuant to s. NR 439.075(4)(a)2., Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 80

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

-- {CONTINUED } b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Compliance Provisions: (a) Compliance with the sulfur dioxide emission limitations in I.C.2.a.(1)(a)(i) and (c) shall be based on the average
emission rate for 30 succ essive boiler operating days. (b) Compliance with the emission limitations in I.C.2.a.(1)(a)(i) and (c) shall be determined by calculating the arithmetic average of all hourly emission rates for sulfur dioxide for the 30 successive boiler operating days

. (c) Compliance with the emission limitation in I.C.2.a.(1)(a)(ii) shall be determined by calculating the arithmetic average of all hourly sulfur dioxide emission rates for each 12 consecutive month period that the boiler has operated. (d) Only hours when the boiler is operated shall be included in the averages in (a) through (c). (e) To demonstrate compliance with the sulfur dioxide emission limitation in I.C.2.a.(2)(a), the permittee shall calculate the arithmetic average of all hourly sulfur dioxid e emission rates for each three consecutive hour period, whenever the boiler is operated. (f) To demonstrate compliance with the sulfur dioxide emission limitations in I.C.2.a.(2)(b), the permittee shall calculate the arithmetic average of all hourly sulf ur dioxide emission rates for each 24 consecutive hour period whenever the boiler is operated. (g) The permittee shall demonstrate compliance during periods of routine maintenance (e.g. atomizer change out) as
follows: (i) To demonstrate compliance with the sulfur dioxide emission limitations in I.C.2.(1)(b)(i), the permittee shall calculate the arithmetic average of all hourly sulfur
dioxide emission rates for each three consecutive hour period while routine maintenance is being performed. (ii) To demo nstrate compliance with the sulfur dioxide emission limitation in I.C.2.(1)(b)(ii), the permittee shall calculate the arithmetic average of all hourly sulfur
dioxide emission rates for S04 for each 24 consecutive hour period while routine maintenance is be ing performed. [ss. NR 407.09(4)(a), NR 405.08(2) and NR 440.20(6)(e) and (g), Wis. Adm. Code, s. 285.65(3), Wis. Stats.

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, 40 CFR s. 60.48Da(e) ] (7) For Periods of Scheduled Maintenance of the Sulfur Control System the permittee shall maintai n records of: (a) The date the maintenance was performed ( e.g . the date the atomizers were changed); (b) The hours boiler B04 operated since the last atomizer was changed; (c) The start and end time of the scheduled routine maintenance; (d) The average hourly SO2 emission rate for S04 during the period of routine maintenance as determined in I.C.2.b.(6)(g), in pounds per hour; (e) The 3

- hour average SO2 emission rate for S04 for each consecutive 3 hour period during the period of routine
maintenance as determined in I.C.2.b.(6)(g), in pounds per hour; and (f) The 24

- hour average SO2 emission rate for S04 for each 24 consecutive hour period during the period of routine maintenance, in pounds per hour

. [s. 285.65(3), Wis. Stats., s. NR 439.04(1)(d), Wis . Adm.
Code and 03

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(8) Reporting Requirements: For sulfur dioxide the following information shall be reported to the department for
each 24

- hour period: (a) Calendar date. (b) The average sulfur dioxide emission rates (lbs/mmBtu)
for each 3 0 successive boiler operating days, ending with the
last 30

- day period in the quarter; reasons for noncompliance with the emission standards, and description of the corrective
actions taken. (c) Percent reduction of the potential combustion
concentration of sulfur dioxide for each 30 successive boiler operating days, ending with the last 30

- day period in the quarter; reasons for noncompliance with the standards; and description of corrective action taken. (d) Identification of the boiler operating days f or which pollutant or diluent data have not been obtained by an approved method for at least 18 hours of operation of the facility; justification for not obtaining sufficient data; and description of corrective actions taken.

{...Continued on Next Page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 81

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

-- {CONTINUED} b. Compliance Demonstration: c. T est Methods, Recordkeeping, and Monitoring: (8) Reporting Requirements: {...Continued from Previous Page...} (e) Identification of the times when emissions data have been excluded from the calculation of average emission rates because of startup, shutdown , maintenance of the sulfur dioxide control system (e.g. atomizer changeout) or other reasons, and justification for excluding data for reasons other than startup, shutdown, and maintenance of the sulfur dioxide control system (e.g. atomizer changeout). (f

) Identification of “F” factor used for calculations, method of determination and type of
fuel combusted. (g) Identification of times when hourly averages have been obtained based on manual sampling methods. (h) Identification of times when the pollutan t concentration exceeded full span of the continuous monitoring system. (i) Description of any modification s to the continuous monitoring system which could affect the ability of the continuous monitoring system to comply with Performance Specification 2 or 3 of 40 CFR part 60, Appendix B. (j) If the minimum quantity of emissions data as required by s. NR 440.20(7) ( 40 CFR s.
60.49Da ) is not obtained for any 30 successive boiler operating days, the information obtained under s. NR 440.20(6)(h) (40 CFR s. 60.48Da(h)) and listed in s. NR 440.20(9)(c) (40 CFR s. 60.51Da(c)) shall be reported to the department for that 30

- day period. (k) If fuel pretreatment credit toward the sulfur dioxide emission standards in I.C.2.a. is claimed, the permittee shall submit a signed statement: (i) Indicating what percentage cleaning credit was taken for the calendar quarter, and whether the credit was determined in accordance with the provisions of I.C.2.b.(9) and Method 19 of 40 CFR part 60, Appendix A. (ii) Listing the qua ntity, heat content, and date each pretreated fuel shipment was received during the previous quarter; the name and location of the fuel pretreatment facility; and the total quantity and total heat content of all fuels received at the facility during the pr evious quarter. (l) For any periods for which sulfur dioxide emissions data are not available, the permittee shall submit a signed statement indicating if any changes were made in operation of the emission control system during the period of data unavaila bility. Operations of the control system and boiler during periods of data unavailability are to be compared with operation of the control system and boiler before and following the period of data unavailability. (m) The permittee shall submit a signed s tatement indicating whether: (i) The required continuous monitoring system calibration, span, and drift checks or other periodic audits have or have not been performed as specified. (ii) The data used to show compliance was or was not obtained in accordanc e with the approved methods and procedures of ch. NR 440, Wis. Adm. Code and is representative of plant performance. (iii) The minimum data requirements have or have not been met; or, the minimum data requirements have not been met for errors that were una voidable. (iv) Compliance with the standards in I.C.2.a. has or has not been achieved during the reporting period. [s. NR 440.20(9), Wis. Adm. Code

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, 40 CFR s. 60.51Da ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 82

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Wes ton Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

-- {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (9) Report Submittal: (a ) The permittee shall submit a written report containing the information in I.C.2.c.(8), or other information approved by the department in writing, to the department semiannually for each 6

- month period. All semiannual reports shall be postmarked by the 30 th day following the end of each 6

- month period. (b) The permittee may submit electronic quarterly reports for sulfur dioxide in lieu of the written reports required in (a). The format of each quarterly electronic report shall
be coordinated with the department. The electronic report shall be submitted no later than 30 days after the end of the calendar quarter and shall be accompanied by a certification statement from the permittee indicating whether compliance with the applicable emission standards and minimum data requirements was achieved during the reporting period. Before submitting the reports in the electronic format, the permittee shall coordinate with the department to obtain agreement to submit reports in
this alternative format. [s. NR 440 .20(9)(i) and (j), Wis. Adm. Code

, 03

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, 40 CFR s. 60.51Da(j) and (k) ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 83

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Polluta nt: 3 . Oxides of Nitrogen (NOx)

a. Limitations: (1) Best Available Control Technology (BACT): 45 Emissions may not exceed: 46

(a) 0.06 pound per million Btu heat input, averaged over any consecutive 30

- day period during normal operations, not including startup and shutdown 47 ; and (b) 0.06 pound per million Btu heat input for all periods including startup and shut down, averaged over any consecutive 12

- month period. (c) When determining compliance with these limits, the permittee shall only account for the hours and days when the boiler operated. [ss. NR 405.08(2) and NR 440.20(5) ( a ) 1. and (6)(e), Wis. Adm. Code, s. 285.65(3), Wis. Stats., 03

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, 40 CFR s. 60.44Da(a)(1) ]

(2) Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (C SAPR) Requirements: Boiler B04 is subject to the NOx

- Annual and the NOx

– Ozone Season CAIR requirements. As such, the permittee shall comply with the CAIR requirements as
outlined in section I.XXX.8. and in the CAIR Permit Application (for sources subj ect to CAIR FIP) submitted by Wisconsin Public Service Corporation

– Weston and dated May 23, 2007 incorporated as Part III of this Operation Permit and 40 CFR 97.121, 97.122, 97.221, 97.222, 97.321 and 97.322. OR alternately, when in effect, comply with t he Cross

- State Air Pollution Rule requirements, as applicable, as required in section I.XXX.8. b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Nitrogen Oxide Emissions shall be controlled using low NOx burners, good

co mbustion practices and a Selective Catalytic Reduction (SCR) System to meet the BACT emission limits. [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3), Wis. Stats.,
and 03

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(2) Compliance Provisions (a) Compliance with the nitrogen oxides emissi ons limitations in I.C.3.a.(1) shall be based on the average emission rate for 30 successive boiler operating days 48

. (b) Compliance with the emission limitations in I.C.3.a.(1) shall be determined by calculating the arithmetic average of all hourly emissi on rates for nitrogen oxides for the 30 successive boiler operating days 49 , except for the periods of startup and
shutdown. (c) 24 hour emissions shall be calculated by combining the NOx concentration and diluent concentration (in % O2 or % CO2) measuremen t consistent with the procedures specified in 40 CFR Part 75 Appendix F. (d) Compliance with the emission limitation in I.C.3.a.(1)(b) shall be determined by calculating the arithmetic average of all hourly nitrogen oxides emission rates for e ach
12 cons ecutive month period that the boiler has operated

. [ss. NR 440.20(6)(e) and (g), Wis. Adm. Code, s. 285.65(3), Wis. Stats., 03

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, 40 CFR s. 60.48Da(e) and (g) ] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever compliance emission

t esting is required, US EPA Method 7, 7E or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(6), Wis. Adm. Code]

45 The boiler is subject to NSPS requirements under s. NR 440.20(5)(a)1., Wis. Adm. Code for nitrogen oxides. The NSPS limit is 0.50 pound per mi llion Btu. The NSPS nitrogen oxides emission limits apply at all times except during periods of startup, shut down or malfunction. The compliance determination in s. NR 440.20(8)(d) is used to demonstrate compliance with NSPS NOx standard. The BACT nitrog en oxides limit under I.A.4.a.(1), is more restrictive than the NSPS nitrogen oxides emission limits, thus the boiler is expected to meet the NSPS nitrogen oxides emission limit while complying with the BACT nitrogen oxides limit.

46 Only hours when the bo iler is operated shall be included in the averages in I.C.3.a.(1).

47 Startup begins with flame on and ends when the ammonia injection starts and the SCR inlet gas temperature is greater than 580 degrees F. Shutdown begins when the ammonia injection stops and the SCR inlet flue gas temperature drops below 580 degrees F. Shutdown ends with flame out.

48 “Boiler operating day” means a 24

- hour period during which fossil fuel is combusted in a steam generating unit for the entire 24 hours. [s. NR 440.20(2)(e ), Wis. Adm. Code]

49 Ibid. (Same as previous footnote.)FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 84

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston U nit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 3 . Oxides of Nitrogen (NOx)

- {Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) When operating the boile r during periods when the NOx

CEMS is not operating

, 50 the permittee shall maintain the parameters identified in condition I.C.3.c.(4), within the following normal operating ranges or normal operating ranges approved by the department in writing

, averaged

o ver each 24

- hour period the boiler is operated : (a) Either: (i) Carbon monoxide emissions in compliance with the emission limitations in I.C.4.a.(1), or (ii) Percent excess O2: 1.8% to
5.1 %. (b) SCR inlet temperature: 580 to 820 degrees Fahrenheit (c) S CR differential pressure: 2 to
10 inches WC. [s. 285.65(3), Wis. Stats. and 03

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- R4] (2) Continuous Emission Monitoring Requirements: (a) The permittee shall calibrate, maintain, and operate continuous emissions monitoring systems (CEMs) 51 , and reco rd the output of the system for measuring nitrogen oxides emissions discharged to the atmosphere. (b) The permittee shall calibrate, maintain, and operate a continuous monitoring system and record the output of the system for measuring the oxygen or carb on dioxide content of the flue gases at each location where nitrogen oxides are monitored. (c) Continuous emissions monitoring systems shall be installed, certified, and operated in accordance with 40 CFR Part 75, s. NR 440.20(7)(c), Wis. Adm. Code, s. NR 439.06(2), Wis. Adm. Code, and 40 CFR s. 60.49Da(c)

. (d) The continuous monitoring systems required by (a) and (b) shall be operated and data recorded during all periods of operation of the affected facility including periods of startup, shutdown, malfu nction or emergency conditions, except for continuous monitoring system breakdowns, repairs, calibration checks and zero and span adjustments. (e) The permittee shall obtain emission data for at least 18 hours in at least 22 out of 30 successive boiler op erating days. If this minimum data requirement cannot be met with a continuous monitoring system, the permittee shall supplement emission data with other monitoring systems approved by the department or the reference methods and procedures described in s. NR 440.20(7)(h) (40 CFR s. 60.49Da(h))

. (f) The continuous monitoring systems required by (a) and (b) shall complete a minimum of one cycle of operation (sampling, analyzing and data recording for each successive 15 minute period. (g) One

- hour averages shall be computed from 4 or more data points equally spaced
over each one

- hour period. Data recorded during periods of continuous monitoring system breakdowns, repairs, calibration checks, and zero and span adjustments may not
be included in the data aver ages. (h) The one

- hour averages shall be expressed in lbs/million Btu heat input and used to calculate the average daily, 30

- day and 12 consecutive month emission rates. The one hour averages shall be calculated using the data points required by s. NR 440 .13(2). At least 2 data points shall be used to calculate the one

- hour averages. (i) The span value for nitrogen oxides is 1000 ppm or the NOx span values determined according to section 2.1.2 in Appendix A to 40 CFR 75. 52 [ s. NR 440.20(7)(i)3., Wis.
Adm . Code

, 40 CFR s. 60.49Da(i)(3) and 40 C FR 60.486(e)(2)(ii)] (j) Continuous emissions monitoring systems shall be installed and operated in accordance with 40 CFR Part 75, s. NR 440.20(7)(d), Wis. Adm. Code

, 40 CFR s. 60.49Da(d)

, and s. NR 439.06(6)(b), Wi s. Adm. Code requirements. (k) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substituted for the measured diluent gas concentra tion value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F Sec tion 3.3.4.1. [ss. 285.65(3) and (10), Wis. Stats.; ss. NR 439.06, NR 440.13(8), and NR 440.20(7)(c)

- (i), Wis. Adm. Code

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, 40 CFR s. 60.49Da(c)

- (i) ]

50 This approach is utilized during periods when the NOx CEMS is not operating, to demonstrate continuous compliance, provided the CEMS meets the requirements of 40 CFR Part 75, s. NR 440.20(7)(c), W is. Adm. Code, s. NR 439.06(2), Wis. Adm. Code, and 40 CFR s. 60.49Da(c).

51 The boiler is exempt from periodic compliance emission tests required by ss. NR 439.075(2)(a)2., and (3)(b), Wis. Adm. Code provided they operate a continuous nitrogen oxides emi ssion monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code, pursuant to s. NR 439.075(4)(a)2., Wis. Adm. Code.

52 See letter from Andy Seeber of DNR to Randy Oswald of WPSC dated December 5, 2007.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 85

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 3 . Oxides of Nitrogen (NOx)

- {Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) The permittee shall keep appropriate records of the strip chart, round chart or data acquisition (DAS) system/electronic data storage continuously. [ss. 285.65(3) and (10),
Wis. Stats. and 03

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- R4]

(4) When operating the boiler during periods when the NOx CEMS is not operating , the

pe rmittee shall, either continuously or on a hourly basis: (a) To demonstrate good combustion practices, the permittee shall either: (i) monitor and record CO emissions using the CEMS required by I.C.4.c.(2), or (ii) monitor and record percent excess O2. ( b) Monitor and record the SCR inlet temperature. (c) Monitor and record the SCR differential pressure. [s. 285.65(10), Wis. Stats. and 03

- RV

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- R4]

(5) The permittee shall calibrate, maintain and operate instrumentation to monitor the parameters identif ied by condition I.C.3.c.(4) [s. 285.65(3) and (10), Wis. Stats. and 03

- RV

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- R4]

(6) The permittee shall retain plans and specifications to show that the boiler is equipped with low NOx burners. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. S tats. and 03

- RV

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- R4]

(7) For nitrogen oxides the following information shall be reported to the department for
each 24

- hour period: (a) Calendar date. (b) The average nitrogen oxides emission rates (lbs/mmBtu) for each 30 successive boiler operating days, ending with the last 30

- day period in the quarter; reasons for noncompliance with the emission standards, and description of the corrective actions
taken. (c) Identification of the boiler operating days for which pollutant or diluent data have not been obtained by an approved method for at least 18 hours of operation of the facility; justification for not obtaining sufficient data; and description of corrective actions taken. (d) Identification of the times when emissions data have been excluded fr om the calculation of average emission rates because of startup, shutdown, malfunction or other reasons, and justification for excluding data for reasons other than startup, shutdown, or
malfunction. (e) Identification of “F” factor used for calculations, method of determination and type of
fuel combusted. (f) Identification of times when hourly averages have been obtained based on manual sampling methods. (g) Identification of times when the pollutant concentration exceeded full span of the
continuous m onitoring system. (h) Description of any modifications to the continuous monitoring system which could affect the ability of the continuous monitoring system to comply with Performance Specification 2 or 3 of 40 CFR part 60, Appendix B. (i) If the minimum quantity of emissions data as required by s. NR 440.20(7) (40 CFR s. 60.49Da) is not obtained for any 30 successive boiler operating days, the information obtained under s. NR 440.20(6)(h) (40 CFR s. 60.48Da(h)) and listed in s. NR 440.20(9)(c) (40 CFR s. 60.51Da(c)) shall be reported to the department for that 30

- day period. {Continued on Next Page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 86

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– ( CONTINUED)

Pollutant: 3 . Oxides of Nitrogen (NOx)

- {Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) {... Continued from previous page...} (j) For any periods for which nitrogen oxides emissions data are not available, the permittee shall submit a signed statement indicating if any changes were made in operation of the emission control system during the period of data unavailability. Operations of the control system and boiler during periods of data unava ilability are to be compared with operation of the control system and boiler before and following the period of data unavailability. (k) The permittee shall submit a signed statement indicating whether: (i) The required continuous monitoring system calibr ation, span, and drift checks or other periodic audits have or have not been performed as specified. (ii) The data used to show compliance was or was not obtained in accordance with the approved methods and procedures of ch. NR 440, Wis. Adm. Code and is

r epresentative of plant performance. (iii) The minimum data requirements have or have not been met; or, the minimum data requirements have not been met for errors that were unavoidable. (iv) Compliance with the standards in I.C.2.a. has or has not been achi eved during the reporting period. [s. NR 440.20(9), Wis. Adm. Code, 03

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- 248

- R4, 40 CFR s. 60.51Da ]

(8) Report Submittal: (a) The permittee shall submit a written report containing the information in I.C.3.c.(7) or other information approved by the d epartment in writing, to the department semiannually
for each 6

- month period. All semiannual reports shall be postmarked by the 30 th day following the end of each 6

- month period. (b) The permittee may submit electronic quarterly reports for nitrogen oxid es in lieu of the written reports required in (a). The format of each quarterly electronic report shall be coordinated with the department. The electronic report shall be submitted no later than 30 days after the end of the calendar quarter and shall be accompanied by a certification statement from the permittee indicating whether compliance with the applicable emission standards and minimum data requirements was achieved during the reporting period. Before submitting the reports in the electronic format , the permittee shall coordinate with the department to obtain agreement to submit reports in this alternative format. [s. NR 440.20(9)(i) and (j), Wis. Adm. Code , 0 3

- RV

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- R4 , 40 CFR s. 60.51Da(j) and (k) ]

(9) The permittee shall keep records adequate t o show: (a) Periods of boiler startup, including when boiler startup began and ended; (b) Period of boiler shutdown, including when boiler shutdown began and ended. [s. NR 439.04(1)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 87

C. Stack S04, Boiler B04, Control Device C04A, C 04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 4 . Carbon Monoxide (CO)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.15 po und per million Btu heat input averaged over any calendar day (excluding startup and/or shut down 53 ). (b) 3399 tons in any 12 consecutive months for all periods, including startup and shut down. 54 (BACT) (c) When determining compliance with these limits, the permittee shall only count the hours, and days when the boiler operated. [s. NR 405.08(2), Wis. Adm. Code, s. 285.65(3) and (7), Wis. Stats., and 03

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- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Carb on Monoxide Emissions shall be controlled using low NOx burners and good combustion practices to meet BACT limits. [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code; s. 285.65(3), Wis. Stats.,
and 03

- RV

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- R4]

(2) The permittee shall demonstrate com pliance with the
carbon monoxide emission limits as follows: (a) Daily average shall be determined by calculating the arithmetic average of all applicable hourly emission rates for a calendar day. (b) The hourly emission rate shall be calculated by
combin ing the CO concentration and diluent concentration (in % O2 or % CO2) measurement consistent with the procedures specified in 40 CFR Part 75 Appendix F. The conversion factor, (K), shall be
0.7266 x 10E

- 7 lb CO/ft3

– ppm. (c) To demonstrate compliance wi th I.C.4.a.(1)(b), t he permittee shall calculate annual emission s by totaling the hourly calculated emission rate for each 12

- consecutive month period . [s. 285.65(3), Wis. Stats. and 03

- RV

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- R4]

(3) When operating the boiler during periods when the

c arbon monoxide CEMS is not operating, 55 the permittee shall maintain the percent excess O2 within the normal operating range of 1.8% to 5.1 % or a normal operating ranges approved by the department in writing

, averaged
over each 24

- hour period the boiler i s operated

. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis. Stats.
and 03

- RV

- 248

- R4] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever compliance emission testing is required, US EPA Method 10, 10B, or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(4), Wis. Adm. Code]

(2) Continuous Monitoring Requirements: (a) The permittee shall calibrate, maintain and operate a continuous emissions monitoring systems (CEMS) for measuring
carbon monoxide. 56
(b) The continuous emissions monitoring system for measuring carbon monoxide shall comply with all the provisions and requirements in Performance Specification 4 in 40 CFR part 60, Appendix B. (c) The permittee shall calibrate , maintain and operate a continuous emissions monitoring systems (CEMS) for measuring oxygen or CO2. (d) The continuous emissions monitoring system for measuring carbon monoxide shall comply with all the provisions and requirements in Performance Specif ication 4 in 40 CFR part 60, Appendix B or, for affected units the performance specifications in 40 CFR part 75, Appendices A to I. (e) When calculating hourly emissions, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substituted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is less than 5.0 percent carbon dioxide or the hourly average oxygen concentration is

gr eater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F Section 3.3.4.1.

{...Continued on Next Page...}

53 Startup period begins with flame on and ends when the ammonia injection starts and the SCR inlet gas temperature is greater than 580 degrees F. Shutdown begins when the ammonia injection stops and the SCR inlet flue gas temperature drops below 580 degrees F. Shutdown en ds with flame out

.

54 This limit is based on a BACT limit, 0.15 pound per million Btu heat input x heat input of the boiler x 517 9 .07 mmBtu/hr x 8,760 hours/year operation x ton/2000 lbs.

55 This approach is utilized during periods when the carbon monoxid e CEMS is not operating, to demonstrate continuous compliance, provided the CEMS meets the requirements of Performance Specification 4 in 40 CFR part 60, Appendix B or, for affected units the performance specifications in 40 CFR part 75, Appendices A to I.

56 The boiler is exempt from periodic compliance emission tests required by ss. NR 439.075(2)(a)2., and (3)(b), Wis. Adm. Code provided they operate a continuous carbon monoxide emission monitor that meets the performance specification requirements of s. NR 439.09, Wis. Adm. Code, pursuant to s. NR 439.075(4)(a)2., Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 88

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179 .07 mmBtu/hr

– (CONTINUED)

Pollutant: 4 . Carbon Monoxide (CO)

- {Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Continuous Monitoring Requirements: {...Continued from Previous Page...} (f) The CEMSs sha ll, at a minimum, complete one cycle of sampling, analyzing and data recording for each successive 15 minute period. The values recorded shall be averaged hourly. Hourly averages shall be computed from 4 data points equally spaced over each 1 hour period , except during periods when calibration, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separated by a
minimum of 15 minutes. (g) Periods of excess emissions sh all be reported as any calendar day or 12 consecutive month period during which the average carbon monoxide emissions exceeded the emission limitation in I.C.4.1.a.(1). An exceedance shall be based on at least 18 and not more than 24 valid recordings of h ourly average emission rates in any 24 hour period. (h) The permittee shall submit quarterly excess emission reports in accordance
with I.XXX.2.a. [s. 285.65(3), Wis. Stats.; ss. NR 407.09(4)(a) and NR 439.09, Wis. Adm. Code
and 03

- RV

- 248

- R4]

(3) When operating the boiler during periods when the carbon monoxide
CEMS is not operating , the permittee shall, either continuously or on a hourly basis, monitor and record percent excess O2. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(4) The permittee shall calibrate, maintain and operate instrumentation to monitor the parameter(s) identified by condition I.C.4.c.(3). [s. NR 407.09(4)(a), Wis. Adm. Code, ss. 285.65(3) and (10), Wis. Stats. and 03

- RV

248

- R4]

(5) The pe rmittee shall retain plans and specifications to show that the boiler is equipped with low NOx burners. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(6) The permittee shall maintain the following records: (a) The ho urly average carbon monoxide emission rate, as determined in I.C.4.b.(2), in lbs/mmBtu and lbs/hr; (b) The daily average carbon monoxide emission rate, as determined in I.C.4.b.(2), in lbs/mmBtu; (c) The total carbon monoxide emissions for each 12 consec utive month period, as determined in I.C.4.b.(2), in tons. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(7) The permittee shall keep records adequate to show: (a) Periods of boiler startup, including when boiler startup began and ended; (b) Period of boiler shutdown, including when boiler shutdown began and
ended. [s. NR 439.04(1)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 89

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boil er Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 5 . Volatile Organic Compounds (VOC)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.0036 pound per million Btu heat input averaged over any calen dar day. (b) 81.60 tons 57 in any 12 consecutive months for all periods, including startup and shut down. 58
(c) When determining compliance with these limits, the permittee shall only account for the hours, and days when the boiler operated. [s. NR 405.08, Wis. Adm. Code; s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) VOC Emissions shall be controlled using low NOx burners and good combustion practices to meet BACT
limits. [s. NR 419.03, Wis. Adm. Code; s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4 ]

(2) To ensure good combustion practices are utilized when the boiler is burning coal: (a) the permittee shall maintain the carbon monoxide emissions in compliance with the emission l imitations in I.C.4.a.(1); (b) W hen operating the boiler during periods when the
carbon monoxide CEMS is not operating

, 59 the permittee shall maintain the percent excess O2 within the normal operating range of 1.8% to 5.1 % or a normal operating

range app roved by the department in writing

, averaged
over each 24

- hour period the boiler is operated

. [ s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4 ]

(3) The permittee shall demonstrate compliance with the volatile organic compou nd emission limit contained in
I.C.5.a. as follows: (a) VOC emissions shall be calculated based on each calendar day. (b) The permittee shall calculate an hourly average emission rate based on measured data using CO CEMs required in I.C.4.b.(1) by combi ning the CO concentration and diluent concentration (in %O2 or % CO2) measurement, consistent with the procedures specified in 40 CFR Part 75 Appendix F, in the following equation: VOC actual = VOC limit X (CO actual/CO limit) ; (c) To demonstrate complianc e with I.C.5.a.(1)(b), the permittee shall calculate annual emissions by totaling the hourly calculated emission rate for each 12

- consecutive month period. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for VOC Emissions: Whenever compliance emission testing is required, US EPA Method 25A and/or 18 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(3), Wis. Adm. Code]

(2) (a) During operation, the permittee shall continuously monitor and record carbon monoxide emissions using the CEMS required by I.C.4.c.(2), to demonstrate good combustion practices
are utilized. (b) When operating the boiler during periods when carbon

mono xide CEMS is not operating , the permittee shall, either continuously or on a n hourly basis, monitor and record percent excess O2, to demonstrate good combustion practices are
utilized. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(10), Wis. Stats.,
03

- R V

- 248

- R4]

(3) The permittee shall calibrate, maintain and operate instrumentation to monitor the parameters identified by condition I.C.5.c.(2). [s. NR 407.09(4)(a), Wis. Adm. Code, ss. 285.65(3) and (10), Wis. Stats. and 03

- RV

- 248

- R4]

(4) The permitte e shall retain plans and specifications to show that the boiler is equipped with low NOx burners. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(5) The permittee shall maintain the following records to document when pe riods of startup and shutdown occur: (a) Date and time when startup begins with flame on; (b) The temperature of the flue gas entering the SCR to document when periods of startup end and periods of shutdown begin. (c) Date and time when shutdown ends with flame out. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. Stats.,
03

- RV

- 248

- R4]

57 This limit is based on a BACT limit, 0.0036 pound per million Btu heat input x heat input of the boiler, 5173X07mmBtu/hr x 8,760 hours/year operation x ton/2000 lbs.

58 Startu p period begins with flame on and ends when the ammonia injection starts and the SCR inlet gas temperature is greater than 580 degrees F. Shutdown begins when the ammonia injection stops and the SCR inlet flue gas temperature drops below 580 degrees F. Sh utdown ends with flame out

59 This approach is utilized during periods when the carbon monoxide CEMS is not operating, to demonstrate continuous compliance, provided the CEMS meets the requirements of Performance Specification 4 in 40 CFR part 60, Appendix B or, for affected units the performance specifications in 40 CFR part 75, Appendices A to I.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 90

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTIN UED)

Pollutant: 6 . Lead Emissions

a. Limitations:

(1) Best Available Control Technology (BACT): Emissions may not exceed 0.13 pound per hour. [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3) and (7), Wis. Stats., and 03

- RV

- 248

- R4]

b. Compliance Dem onstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall perform compliance emission test to demonstrate compliance with the lead emission limitation in condition I.C.6.a.(1) as follows: (a) A compliance emission test shall b e conducted every 60 months within 90 days from the date of the last stack test as long as the permit remains valid. (b) The test shall be conducted in accordance with I.XXX.3.a.(1). (c) The permittee shall perform simultaneous monitoring of the paramete rs identified in I.C.6.c.(2) to establish normal operational ranges. [ ss. NR 407.09(4)(a) and NR 439.075(1)(b), Wis. Adm. Code, s. 285.65(3) and (10), Wis.
Stats. and 03

- RV

- 248

- R4 ]

(2) Lead emissions shall be controlled using a fabric filter baghouse sy stem to meet the BACT limit. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The fabric filter baghouse system shall be in line and shall be operated at all times when the boiler is in operation 60 and coal is being fi red. [ss. NR 406.10 and NR 407.09(4)(a)1.,
Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The pressure drop across the fabric filter baghouse system
shall be maintained as required by condition I.C.1.b.(9). [s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), Wi s. Stats.
and 03

- RV

- 248

- R4] (1) Reference Test Method for Lead Emissions: Whenever compliance emission testing is required, US EPA Method 12 or Method 29 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance . [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall continuously monitor the operating pressure drop across the fabric filter system and shall sound an audible alarm, whenever the operating pressure drop is below the minimum pressure drop identif ied in I.C.6.b.(4). [ s. NR 439.055( 5) , Wis. Adm. Code and 04

- RV

- 248

- R4]

(3) The permittee shall record the pressure drop across the fabric filter baghouse system a minimum of once for every 8 hours of source operation or once per day, whichever yields
th e greater number of measurements. [s. NR 439.055(2)(b)1.,
Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The permittee shall maintain records of all inspections, checks and any maintenance or repairs performed on the fabric filter baghouse system, containing the d ate of the action, initials of inspector, and the results. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(5) Upon detecting an excursion or exceedance of the range specified in condition I.C.6.b.(4) , the permittee shall respond to every “out of range” pressure drop alarm by restoring operation of the baghouse to its normal or usual manner of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [s. NR 407.09(4)(a), Wis. Adm. C ode, 40 CFR 64.7(d)(1), s. 285.65(3), Wis. Stats. and 04

- RV

- 248

- R4]

(6) The permittee shall maintain records of: (a) The results of the compliance emission tests required by condition I.C.6.b.(1); and (b) The parameter monitoring and associated operati ng ranges for the parameters identified in condition I.C.6.c.(2) as recorded during the compliance emission tests required by condition I.C.6.b.(1). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

60 Boiler operation (as it relates to baghouse operation) is any time the draft ID fan(s) are in operation. See normal start

- up and
shut

- down sequence in condit ion I.C.9.b.(3).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 91

C. Stack S04, Boiler B04, Control Device C04A, C 04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 7 . Mercury Emissions

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 1.7 pound per trillion Btu heat input in any 12 consecutive months; AND (ii) 0. 8 pounds per trillion Btu heat input in any 12 consecutive months. 61

(b) Compliance shall be demonstrated using an Hg CEMS installed, certified, operated, maintained, and the dat a quality assured in accordance with 40 CFR s. 63.10010 and Appendix A of 40 CFR, Part 63, Subpart UUUUU, or as approved by the department in writing. [ss. NR 405.08, Wis. Adm. Code; s. 285.65(7), Wis. Stats.; 03

- RV

- 248

- R 6 ]

(2) C ase

- by

- case Maximum Achi evable Control Technology (MACT): (a) Emissions may not exceed 1.7 pound per trillion Btu heat input in any 12 consecutive months. (b) Compliance shall be demonstrated as required by condition I.C.7.a.(1)(b). (c) The permittee shall comply with the emis sion limitation in I.C.7.a.(2)(a) until April 16, 2015, the compliance date for existing sources subject to National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR Part 63 Subpart UUUUU. The perm itte shall comply with the requirements of section I. C .1 5 ., in lieu of this section, starting on April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] [40 CFR s. 63.43, 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Re cordkeeping, and Monitoring: (1) Mercury emissions shall be controlled using a fabric filter baghouse system coupled with the
sorbent injection system to meet
the BACT limits of I.C.7.a.(1)(a)(i) and (ii) and the MACT limit of I.C.7.a.(2), w henever coal is fired in boiler B04. [ ss. 285.65(3) and (7), Wis. Stats., s. NR 407.09(1)(c) and (4), Wis. Adm. Code, and 03

- RV

- 248

- R4 ] (1) Reference Test Method for Mercury Emissions: Whenever compliance emission testing is required, US EPA Methods 29, 30A and 30B o r an alternative method approved in writing by the department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The monitoring, recording and recordkeeping requirements for the baghouse system
identified in conditions I.C.1. c.(2) through (8) shall be used as monitoring, recording and recordkeeping requirements for the mercury emission limitations in I.C.7.a . [s. NR 439.055(2)(b)1., Wis. Adm. Code, and 03

- RV

- 248

- R4]

61 The emission limitation of 0.8 pounds per trillion Btu heat input is the rate shown to be reflective of the actual achievable mercury reductions as determined by the optimizations study and compliance emission tests required by permit 0 3

- RV

- 248

- R4. Condition I.A.8.b.(2) of construction permit 03

- RV

- 248

- R4 required the permittee to perform an optimization study within 18 months of initial operation, to determine the minimum sorbent feed rate, evaluate the effect of increased sorbent inje ction, evaluate the effect of increase slurry in the spray dryer, optimize the SCR unit, determine actual operating conditions, and determine the achievable mercury reductions. The results of the optimization study are summarized in a report submitted by the permittee dated November 19, 2009. Condition I.A.8.b.(4) of construction permit 03

- RV

- 248

- R4 required the permittee to perform 4 mercury compliance emission tests within 18 months of initial operation. Condition I.A.8.b.(6) of construction permit 03

- RV

- 248

- R4 required the permittee to submit the results of the compliance emission tests and required the department to review the test results and adjust the emission limit to more accurate reduction levels for mercury when the operation permit is issued. Establishing a mercury emission limitation based on the achievable mercury reductions demonstrated through compliance emission testing and the mercury optimization study is not being done as a Title V action, but is a requirement of the Title I constructi on permit for boiler B04. (See construction permit 03

- RV

- 248 and its subsequent revisions.) Because Title V operation permits are required to contain all applicable requirements, the limit established through the Title I construction permit requirement is being placed in the facility’s renewed Title V operation permit.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 92

C. Stack S04, Boiler B04, Control Device C04A, C04B, C0 4C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 7 . Mercury Emissions

- { Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping and Monitoring: (2) To demonstrate compliance with the BACT & MACT emission limitation s in I.C.7.a. , the permittee shall (a) Operate a mercury continuous emission monitoring system (Hg CEMS) according to the requirements of I.C.7.c.( 5 ). The Hg CEMS shall be installed, certified, operated , maintained, and the data quality assured in accordance with 40 CFR s. 63.10010 and Appendix A of 40 CFR, Part 63, Subpart UUUUU, or as approved by the department in writing. (See sections I.XXX.12. and 13. for additional requirements.) (b) When operat ing the boiler during periods when the Hg CEMS is not operating, 62 the permittee shall maintain the minimum sorbent feed rate, averaged over each 24

- hour period the boiler is operated 63 or until the CEMS is
returned to service (excluding periods of flushes, startup, shutdown, and maintenance), as follows: (i) not less than 3.0 pounds of sorbent per MMacf of exhaust gas;

or (i i ) an alternate minimum sorbent feed rate approved by the department in writing

, which meets the following criteria:

a) The alternate mi nimum sorbent feed rate has been shown to demonstrate compliance with the mercury emission limitation s of
condition s I.C.7.a.(1) and (2) , through either compliance emission testing or data collected from a certified Hg CEMS that is operating in
accordance with the requirements of I.C.7.b.(2)(a); b) If the permittee elects to utilize mercury control enhancing chemical(s) in addition to or without the sorbent under (ii)(a), the addition of such chemical(s) and the addition of any sorbent(s) is
maintained at the rate (s) used during the testing which demonstrated compliance with the mercury emission limitations in I.C.7.a.(1) and (2);
and

c ) The a lternate minimum sorbent feed rate s from (ii) a) and (ii) b) shall be based on compliance emission testing or periods usi ng data collected
from a certified Hg CEMS

, when the boiler was operating at capacity or as close to capacity as practicable. [40 CFR s. 63.43, ss. NR 405.08 and NR 407.09(1)(c) and (4), Wis. Adm. Code, s. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R 6 ] (3) The permittee shall maintain records of: (a) the date, time, and initials of the person performing the inspections required by I.C.7.b.( 4 ); (b) a list of the items inspected; (c) any maintenance, repairs, or adjustments performed as a result of these inspections; (d) the operating hours of the boiler since the last inspection ; (e) the monthly average mercury content of the coal fired in boiler B04; and (f) the monthly average higher heating
value of the coal fired in boiler B04. [s. NR 439.04(1)(d), Wis. Adm. Code and
03

- RV

- 248

- R4]

62 This approach is utilized during periods when the mercury CEMS is not operating to demonstrate continuous compliance, provided the CEMS is installed and certified and being operated, main tained and the data quality assured in accordance with 40 CFR s. 63.10010 and Appendix A of 40 CFR, Part 63, Subpart UUUUU, or as approved by the department in writing.

63 Only hours when the boiler is operated shall be included in the average in I.C.7.b.( 2 ).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 93

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 7 . Mercury Emissions

- { Continued}

b. C ompliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) The compliance demonstration methods for the baghouse system identified in conditions I.C.1.b.(2) through (9), shall be used as compliance demonstration methods for the mercury emission limitations in
I.C.7.a. , in addition to those included under section I.C.7.b . [s. 285.65(3), Wis. Stats., s. NR 407.09(1)(c) and (4), Wis. Adm. Code and
03

- RV

- 248

- R4] ( 4 ) Continuous Emission Monitoring Requirements : (a) The Hg CEMS shall be i nstalled, certified, operated, maintained, and quality assured in accordance with 40 CFR s. 63.10010 and Appendix A of 40 CFR, Part 63, Subpart UUUUU, or as approved by the department in writing. [ss. NR 407.09(1)(c) and (4) and NR 439.095(6), Wis. Adm. C ode] (b) The Hg CEMS shall, at a minimum, complete one cycle of sampling, analyzing and data recording for each successive 15

- minute period. The values recorded shall be averaged hourly. Hourly averages shall be computed from a minimum of 4 data points equally spaced over each 1 hour period, except during periods when calibration, quality assurance or maintenance activities are being performed. During these periods a valid hour shall consist of at least 2 data points separated by a minimum of 15 minutes . [ss. NR 407.09(1)(c) and (4) and NR 439.09(9)(b), Wis. Adm. Code] (c) (i) The hourly average mercury emission rates shall be used to calculate a monthly average mercury emission rate for the periods during each calendar month that the boiler is operat ed, in pounds per trillion Btu heat input to the boiler. (ii) The 12

- month rolling average mercury emission rate shall be calculated monthly for the previous 12 consecutive month period, in pounds per trillion Btu heat input to the boiler. (iii) The per mittee shall keep monthly records of the monthly average mercury emission rate and the 12

- month rolling average mercury
emission rate. [ss. NR 407.09(1)(c) and (4), and s. NR 439.04(1)(d), Wis. Adm. Code] (d) Quarterly Excess Emission Reports: The permit tee shall submit quarterly excess emission reports to the department in accordance with I.XXX.2.a.(1) and (2). [s. NR 439.09(10), Wis. Adm. Code] (e) Periods of excess emissions shall be reported as any 12

- month rolling average during which mercury emiss ions exceed the applicable emission limitations in I.C.7.a.(1). [s. NR 439.09(10), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 94

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 7 . Mercury Emissions

- { Continued} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 4 ) The permittee shall perform periodic inspections of the sorbent injection system to ensure that the control e quipment is operating properly. The time interval between inspections may not exceed 13,140 operating hours, unless written approval from the Department is granted allowing for a greater interval. Such a request may only be granted if the applicant demons trates that such an interval is needed to maintain a stable electric power supply. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code] ( 5 ) During periods when the Hg CEMS is not operating the permittee shall: (a) Continuously monitor the following:

(i) Sorbent feed rate in pounds per MMacf of exhaust gas; (ii) Amount or feed rate of any mercury control enhancing chemical(s) used; ( b ) Keep records of:

(i) The type of sorbent used during the period in question; (i i ) The feed rate of sorbent used

, averaged over
each 2 4

- hour period that the boiler is operated during the period in question, or averaged over the period in question if less than 24 hours in duration; (iii) The type of any mercury control enhancing chemical(s) used during the period in question ; (i v ) The fe ed rate of any mercury control enhancing chemical(s) used , averaged over each 24

- hour period that the boiler is operated during the period in question, or averaged over the period in question
if less than 24 hours in duration ; ( v ) The start and end time of the period in question; (v i ) The duration of the period in question; [ss. NR 407.09(1)(c) and (4) and NR 439.04(1)(d),
Wis. Adm. Code , 03

- RV

- 248

- R 6 ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 95

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical P ulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 8. Emissions of Fluorides

a. Limitations:

(1) 0.000217 pound per million Btu heat input (1.12 pounds per hour). (BACT) [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3), Wis. St ats.; s. 285.65 (7) Wis. Stats.]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Emissions of fluorides shall be controlled by a fabric filter baghouse system and a dry FGD system. [s. NR 407.09(4)(a), Wis. Adm. Code , s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4]

(2) Compliance demonstration requirements of I.C.1.b.(2), (4), (6), and (7) shall be used as compliance demonstration
methods for fluoride emissions. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis. S tats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Emissions of Fluorides: Whenever compliance emission testing is required, US EPA Method 13B or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s.
N R 439.06(8), Wis. Adm. Code]

(2) The monitoring and recordkeeping requirements of I.C.1.c.(2)

- (5), (7) and (8) shall be used as monitoring and recordkeeping requirements for fluoride emissions. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 96

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 9. Visible Emissions

a. Limitations: (1) (a) The permittee may not cause to be discharged into the atmosphere any gases which exhibit greater than 20% opacity (6

- minute average), except for one 6

- minute period per hour of not more than 27% opacity. (b) The emission standard in (a) applies at all times except periods of startup, sh utdown, and malfunction. [ss. NR 431.05, NR 440.20(3)(b) and NR 440.20(6)(c), Wis. Adm. Code

, 03

- RV

- 248

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, 40 CFR s. 60.42Da(b) and s. 60.48Da(c) ]

(2) 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 64 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other g ood cause, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code]

(3) Best Available Control Technology (BACT) 65 [s. NR 405.08, Wis. Adm. Code and Court of Appeals Decision Dated and Filed May 13, 2010, Appeal No. 2009AP648, Cir Ct. No. 2007CV1455 ] b. Compliance
Demonstration: c. Test Methods, Recordkeeping, and Monitoring:

(1) Opacity shall be controlled using a fabric filter baghouse system. [s. 285.65(3), Wis. Stats.
and 03

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(2) The fabric filter baghouse syste m shall be in line and shall be operated at all times when the boiler is in operation 66 and coal is being fired. [ss. NR 406.10 and NR 407.09(4)(a)1., Wis.
Adm. Code and 03

- RV

- 248

- R4] (1) Reference Test Method for Visible Emissions: Whenever compliance e mission testing is required, US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [ss. NR 439.06(9)(a)1.

, NR 440.20(8)(b)3., Wis. Adm. Code

, 40 CFR s. 60.50Da(b)(3) ]

(2) The permittee shal l calibrate, maintain and operate a continuous monitoring system, and record the output of the system, for measuring the opacity of emissions discharged to the atmosphere. [s. NR 440.20(7)(a), Wis. Adm. Code, s. 285.65(10), Wis. Stats.

, 03

- RV

248

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, 40 CF R s. 60.49Da(a) ]

(3) The continuous opacity monitor (COM) may be located after the baghouse. [s. 285.65(3), Wis. Stats. and 03

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(4) The continuous opacity monitors required by I.C.9.c.(2) shall complete one cycle of sampling and analyzing for each successive 10

- second period and one cycle of data recording for each successive 6

- minute period. [s. NR 439.09(9)(a), Wis. Adm. Code]

(5) Unless otherwise specified by the Department, periods of excess visible emissions shall be any 6

- minute period during which the average opacity exceeds the limitation in I.C.9.a.(1). [ss. NR 439.09(10)(b) and NR 440.20(9)(h), Wis. Adm. Code, 40 CFR s. 60.51Da(i) ]

64 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one day.

65 The District IV COURT OF APPEALS DECISION DATED AND FILED May 13, 2010, Appeal No. 2009AP648, S IERRA C LUB v. W ISCONSIN D EPARTMENT OF N ATUR AL R ESOURCES

, W ISCONSIN P UBLIC S ERVICE C ORPORATION AND D AIRYLAND P OWER C OOPERATIVE ( Cir. Ct. No. 2007CV1455) concluded that boiler B04 is subject to a BACT visible emission limitation. The BACT visible emission limitation may not be established in this Ti tle V operation permit renewal, but must be established in a Title I, new source review action. The compliance plan and schedule in condition I.XXX.13.(1)(b), lays out the procedur e that shall be followed to establish the specific visible emission BACT li mitation for boiler B04.

66 Boiler operation (as it relates to baghouse operation) is any time the draft ID fan(s) are in operation. See normal start

- up and
shut

- down sequence in condition I.C.9.b.(3).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 97

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 9. Visible Emissions {CONTINUED} b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) To minimize visible emissions, the permittee shall start

- up and shut

- down each boiler according to the following: 67
(a) Normal Start

- up Sequence: (i) Place the baghouse in service and ensure continuous opacity monitor is operational,
or in accordance with an alternative monitoring method approved in writing by the Department. (ii) Start the draft fan(s) (iii) Preheat boiler firing natural gas. (iv) Introduce coal to the combustion chamber while continuing to operate the gas burners as the coal begins to ignite. (v) Continue the use of the gas burner during s tartup to achieve a stable coal fire. (vi) Normal start

- up is complete when: 1. A stable coal fire is achieved; 2. A minimum SCR operating temperature of 580 degrees Fahrenheit is achieved; and 3. Ammonia injection starts. 68

(b) Normal Shut

- down Sequenc e: (i) Reduce generator load below 350 MW with the intent of removing the unit from
service. 69
(ii) Discontinue coal introduction to boiler and cease fuel firing. (iii) Discontinue operation of the draft fans. (iv) Discontinue operation of baghouse. (v) Normal shut

- down is complete after item (iv) or a start

- up of the boiler

commences. [s. NR 407.09(4)(a), Wis. Adm. Code] (6) The permittee shall submit quarterly excess emission reports to the Department by January 30, April 30, July 30, and October 30 f or the previous calendar quarter, in accordance with I.XXX.2.a. These reports shall include,
but not be limited to: (a) For any periods for which opacity emissions data are not available, the permittee shall submit a signed statement indicating if any cha nges were made in operation of the emissions control system during the period of data unavailability. Operations of the control system and affected facility during periods of data unavailability are to be compared with operation of the control system and affected facility before and following the period of data unavailability. (b) The report shall include a signed statement indicating whether: (i) The required continuous monitoring system calibration , span, and drift checks or other periodic audits have or have not been performed as specified. (ii) The data used to show compliance was or was not obtained in accordance with approved methods and procedures of ch. NR 440 and is representative of plant performance. (iii) The minimum data requirements have or have not been met; or, the minimum data requirements have not been met for errors that were
unavoidable. (iv) Compliance with the standards has or has not been achieved during the reporting period. (c) Identification of opacity levels in excess of the opacity standard in I.C.9.a.(1) and the date of such excesses shall be submitted to the department each calendar quarter. [ss. NR 439.09(10) and NR 440.20(9), Wis. Adm. Code

, 40 CFR s. 60.51Da ]

(7) The permittee may submit electronic quarterly reports in lieu of submitting the written report required by I.C.9.c.(6). The format shall be coordinated with the department. The electronic report shall be submitted no later than 30 days after the end of the calendar quarter and accompanied by a certification

st atement indicating whether compliance with the applicable emission standards and minimum data requirements of this section was achieved during the reporting period. Before submitting reports in the electronic format, the permittee shall coordinate with th e department to obtain approval. [s. NR 440.20(9)(j), Wis. Adm. Code

, 40 CFR s. 60.51Da(k) ]

67 The following start

- up and shut

- down sequence con tains a summary of steps to limit visible emissions.

68 The normal start

- up sequence from first coal fire to stable coal fire is generally less than 12 hours in duration.

69 All values are gross MW.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 98

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTIN UED)

Pollutant: 10. Beryllium

a. Limitations:

(1) Best Available Control Technology (BACT): Emissions may not exceed 1.3 pound per trillion Btu heat input. [s. NR 405.08(2), Wis. Adm. Code; ss. 285.65(3) and (7), Wis. Stats., and 03

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b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall perform compliance emission test to demonstrate compliance with the beryllium emission limitation in condition I.C.10.a.(1) as follows: (a) A compliance e mission test shall be conducted every 60 months within 90 days from the date of the last stack test as long as the permit remains valid. (b) The test shall be conducted in accordance with I.XXX.3.a.(1). (c) The permittee shall perform simultaneous
monito ring of the parameters identified in I.C.10.c.(2). [ ss. NR 407.09(4)(a) and NR 439.075(1)(b), Wis. Adm. Code, s. 285.65(3) and (10), Wis. Stats. and 03

- RV

- 248

- R4 ]

(2) Beryllium emissions shall be controlled by a fabric filter baghouse system to meet the BACT limit. [ s. NR 407.09(4)(a), Wis. Adm. Code; s. 285.65(3), Wis. Stats., and 03

- RV

- 248

- R4 ]

(3) The fabric filter baghouse system shall be in line and shall be operated at all times when the boiler is in operation 70 and coal is being fired. [ss. NR
406. 10 and NR 407.09(4)(a)1., Wis. Adm. Code and
03

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- R4]

(4) The pressure drop across the fabric filter baghouse system shall be maintained as required by condition I.C.1.b.(9). [s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

248

- R4]

(5) The permittee shall monitor beryllium emissions through coal sampling and analysis done in accordance with the methods and procedures outlined in I.XXX.4.a. and s. NR 439.08(1), Wis.
Adm. Code

. The permittee shall monitor monthly average ber yllium content and higher heating value in the coal. The data obtained from the coal sampling and analysis shall be correlated with the results of the latest compliance emission test for the purpose of calculating the beryllium emission rate. [s. NR
407.0 9(4)(a)1., Wis. Adm. Code and 03

- RV

- 248

- R4] (1) Reference Test Method for Emissions of Beryllium: Whenever compliance emission testing is required, US EPA Method 29 or an alternate method approved in writing by the Department, shall be used
to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall continuously monitor the operating pressure drop across the fabric filter system and shall sound an audible alarm, whenever the operating pressure drop is below the minimum pressure
d rop identified in I.C. 10 .b.(4) . [ s. NR 439.055( 5 ), Wis. Adm. Code and
04

- RV

- 248

- R4]

(3) The permittee shall record the pressure drop across the fabric filter baghouse system a minimum of once for every 8 hours of source operation or once per day, whichev er yields the greater number of measurements. [s. NR 439.055(2)(b)1., Wis. Adm. Code and 03

- RV

248

- R4]

(4) The permittee shall maintain records of all inspections, checks and any maintenance or repairs performed on the fabric filter baghouse system, incl uding the date of the action, initials of inspector, and the results. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

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(5) Upon detecting an excursion or exceedance of the range specified
in condition I.C.10.b.(4) , the permittee shall respond to ev ery “out of range” pressure drop alarm by restoring operation of the baghouse to its normal or usual manner of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [s. 285.65(3), Wis. Stats. and 04

- RV

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(6) The permittee shall maintain records of: (a) The results of the compliance emission tests required by condition I.C.10.b.(1); and (b) The parameter monitoring and associated operating ranges for the parameters identified in condition I.C.10.c.(2) as recorded during the compliance emission tests required by condition I.C.10.b.(1). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

(7) The permittee shall maintain monthly records of: (a) the average beryllium content of the coal as determined in I.C.10.b.(5); (b) the average higher heating value of the coal as determined in I.C.10.b.(5); (c) The calculated beryllium emission rate in pounds per trillion Btu heat input as determined in I.C.10.b.(5). [s. NR 439.04(1)(d), Wis. A dm. Code]

70 Boiler operation (as it relates to baghouse operation) is any time the draft ID fan(s) are in operation. See normal start

- up and
shut

- down sequence in condition I.C.9.b.(3).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 99

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 11. Hazardous air pollutants (inorganic solid HAPs, inorganic acid HAPs, Organic HAPs) regulated under sec. 112
of the Clean Air Act.

a. Limitations: (1) The permittee shall use fabric filter baghouse and comply with the PM/PM10 limits in I.C.1.a (1) to meet case

- by

- case MACT for inorganic solid HAPs;

(2) The perm ittee shall use a dry flue gas desulfurization system (FGD) and comply with the emission limitation of condition I.C.2.a.(1) to meet case

- by

- case MACT limits for inorganic acid HAPs;

(3) The permittee shall comply with and meet the VOC emission limits i n I.C.5.a.(1) to comply with case

- by

- case MACT for organic HAPs [40 CFR s. 63.43; s. 285.65(13), Wis. Stats; and 03

- RV

- 248

- R4]

The permittee shall comply with the requirements of this section until April 16, 2015, the compliance date for existing

sources subject to National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR Part 63 Subpart UUUUU. The permitte shall comply with the requirements of section I.C.15., in lieu of this section, starting on April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Inorganic HAP emissions shall be controlled using a fabric filter baghouse system. [ 40 CFR s. 63.43, s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The fabric filter baghouse system shall be in line and shall be operated at all times when the boiler is in operation 71 and coal is being fired. [ss. NR 406.10 and NR 407.09(4)(a)1.,
Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The compliance demonstration methods identified in conditions I.C.1.b. (4), (6) and (7) shall be used as compliance demonstration methods for inorganic HAP emission limitations in I.C.11.a.(1). [s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- 248

- R4]

(4) Inorganic acid HAPs emission shall be controlled using a dry flue gas desulfurization system (FGD) [ 40 CFR s. 63.43, s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), W is. Stats.
and 03

- RV

- 248

- R4]

( 5 ) The compliance demonstration method identified in condition I.C.2.b.(1) through (3) shall be used as compliance demonstration methods for inorganic acid HAPs emission limitations in I.C.11.a. (2). [s. 285.65(3), Wis. Stat s. and 03

- RV

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- R4]

( 6 ) Organic HAPs emission shall be controlled using good combustion practices. [40 CFR s. 63.43, s. NR 407.09(4)(a)1., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- R V

- 248

- R4]

( 7 ) The compliance demonstration method identified i n section I.C.5.b. shall be used as compliance demonstration methods for organic HAPs emission limitations in I.C.11.a.(3). [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for organic HAPs Emissions; inorganic solid HAPs, and inorga nic acid HAPs: Whenever compliance testing is required, a compliance test protocol approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The recordkeeping, recording and monitoring requirem ents of conditions I.C.1.c.(2) through (5), (7), and (8) shall be used as recordkeeping, recording and monitoring requirements for the inorganic solid HAP emission limitation in I.C.11.a.(1). [s. NR 439.04(1)(d), Wis. Adm. Code]

(3) The recordkeeping, r ecording and monitoring requirements of condition I.C.2.c.(4) and (5) shall be used as recordkeeping, recording and monitoring requirements for the inorganic acid HAP emission limitation in I.C.11.a.(2). [s. NR 439.04(1)(d), Wis. Adm. Code]

( 4 ) The reco rdkeeping, recording and monitoring requirements of conditions I.C.5.c.(2) through (5) shall be used as recordkeeping, recording and monitoring requirements for the organic HAP emission limitation in I.C.11.a.(3). [s. NR 439.04(1)(d), Wis. Adm. Code]

71 Boiler operation (as it relates to baghouse operation) is any time the draft ID fan(s) are in operation. See normal start

- up and
sh ut

- down sequence in condition I.C.9.b.(3).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 100

C . Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 12 Ammonia Emissions

a. Limitations:

(1) 3 ppm volume dry corrected to 3% p ercent oxygen and 55.52 pounds per hour 72 [ s. NR 445.04(1), Wis. Adm. Code and
03

- RV

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- R4]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall perform compliance emission tests to demonstrate complia nce with the hourly ammonia emission limitation in condition I.C.12.a.(1) as follows: (a) A compliance emission test shall be conducted every 60 months within 90 day from the date of the last stack test as long as the permit remains valid. (b) The tests shall be conducted in accordance with I.XXX.3.a.(1). [ss. NR 407.09(4)(a) and NR 439.075(1)(b), Wis. Adm. Code, ss. 285.65(3) and (10), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Ammonia: Whenever compliance testing for ammonia is require d, USEPA Method 027, or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain records of the results of the compliance emission tests required by condition I.C.12.b.(1). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

72 These emissions do not result from combustion. Aqueous ammonia is used as the reagent for the SCR. Ammonia that does
not react is exhausted out of the stack.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 101

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Poll utant: 13. Sulfuric Acid Mist (H2SO4)

a. Limitations: (1) Best Available Control Technology (BACT): 0.005 pound per million Btu heat input, based upon a 24

- hour average. [s. NR 405.08(2), Wis. Adm. Code and 03

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- R4] b. Compliance Demonstratio n: c. Test Methods, Recordkeeping, and Monitoring: (1) Sulfuric acid mist emissions shall be controlled by a FGD system to meet the BACT limits. [s. NR 405.08(2), Wis.
Adm. Code and 03

- RV

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- R4]

(2) The boiler may only be fired on coal and natural g as. [ss. NR 405.08(2) and NR 406.10, Wis. Adm. Code; s. 285.65(3),
Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall perform compliance emission tests to demonstrate compliance with the sulfuric acid mist emission limitation in condition I.C.13.a.(1) as follows: (a) A compliance emission test shall be conducted every 60 months within 90 days from the date of the last stack test as long as the permit remains valid. (b) The test shall be conducted in accordance with I.XXX.3.a.(1). (c) The permittee shall perform simultaneous monitoring of the parameters identified in I.C.13.c.(2)(b) and (3). [ ss. NR 407.09(4)(a) and NR 439.075(1)(b) Wis. Adm. Code, s. 285.65(10), Wis. Stats., and 03

- RV

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- R4 ]

(4) The permittee shall maintain the flow rate of the aqueous lime/recycled ash slurry to the FGD system at not less than
50 gallons per minute per side and not less than 100 gallons per minute total , averaged over each day the boiler is operated 73 (excluding flushes, startup, shutdown, and maintenance), or t he value established during the most recent stack test that demonstrated compliance with the emission limitation in I.C.13.a.(1), if approved by the department in writing. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3),
Wis. Stats. and 03

- RV

- 248

- R4]

( 5) To ensure good combustion practices are utilized when the boiler is burning coal: (a) the permittee shall maintain the carbon monoxide emissions in compliance with the emission limitations in I.C.4.a.(1); (b) W hen operating the boiler during periods w hen the
carbon monoxide CEMS is not operating

, 74 the permittee shall maintain the percent excess O2 within the normal operating range of 1.8% to 5.1 % or a normal operating range approved by the department in writing

, averaged over each
24

- hour period the boiler is operated

. [ s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4 ] (1) Reference Test Method for Sulfur Acid Mist Emissions: Whenever compliance emission testing is required, US EPA Method 8 or an alternate method approve d in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) (a) During operation, the permittee shall continuously monitor and record carbon monoxide emissions using the CEMS required by I.C.4.c.(2), to demonstrate good combustion practices are utilized. (b) When operating the boiler during periods when the
carbon monoxide CEMS is not operating , the permittee shall, either continuously or on a n hourly basis, monitor and record percent excess O2, to de monstrate good combustion practices
are utilized. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(10), Wis.
Stats. and 03

- RV

- 248

- R4]

(3) During operation, the permittee shall monitor and record the flow rate of the aqueous lime/recycled ash slurry to th e dry flue gas desulfurization (FGD) system once every 8 hours of operation or once per day, whichever yields the greater number of measurements. [ss. NR 439.04(1)(d) and NR 439.055(1)(a), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The permittee shall maintai n records of: (a) The results of the compliance emission tests required by condition I.C.13.b.(3); and (b) The parameter monitoring and associated operating ranges for the parameters identified in condition I.C.13.c.(2)(b) and (3) as recorded during th e compliance emission tests required by condition I.C.13.b.(3). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

73 Only hours when the boiler is operated shall be included in the average in I.C.2.b.(2).

74 This approach is utilized during periods when the carbon monoxide CEMS is not operating, to demonstrate continuous compliance, provided the CEMS meets the requirements of Performance Specification 4 in 40 CFR part 60, Appendix B or, for affected units the performance specifications in 40 CFR part 75, Appendices A to I .FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 102

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 14. Hydrogen Chloride

a. Limitations:

(1) 10.94 pounds per hour, based upon a 24

- hour average (MACT), regulated under sec. 112 of the Clean Air Act. [40 CFR s. 63.43, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]
The permittee shall comply with the requirements of this section until April 16, 2015, the compliance date for existing sources subject to National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR P art 63 Subpart UUUUU. The permitte shall comply with the requirements of section I.C.15., in lieu of this section, starting on April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Rec ordkeeping, and Monitoring: (1) Hydrogen Chloride emissions shall be controlled by the use of dry flue gas desulfurization (FGD) Systems to meet the MACT limits. [40 CFR s. 63.43, s. NR 405.08(2), Wis. Adm. Code and
03

- RV

- 248

- R4]

(2) The boiler may on ly be fired on coal and natural gas. [s. NR 405.08(2) , Wis. Adm. Code; s. NR 406.10, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

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- R4]

(3) The permittee shall perform compliance emission tests to demonstrate compliance with the hydrogen chlori de emission limitation in condition I.C.14.a.(1) as follows: (a) A compliance emission test shall be conducted every 60 months within 90 days from the date of the last stack test as long as the permit remains valid. (b) The test shall be conducted in a ccordance with I.XXX.3.a.(1). (c) The permittee shall perform simultaneous monitoring of the parameter(s) identified in I.C.14.c.(2) [ss. NR 407.09(4)(a) and NR 439.075(1)(b) Wis. Adm. Code and
03

- RV

- 248

- R4]

(4) The permittee shall maintain the flow rat e of the aqueous lime/recycled ash slurry to the FGD system at not less than 50 gallons per minute per side and not less than 100 gallons per
minute total , averaged over each day the boiler is operated 75
(excluding flushes, startup, shutdown, and maintenanc e), or the value established during the most recent stack test that demonstrated compliance with the emission limitation in I.C.2.a.(1), if approved by the department in writing. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Hydrogen Chloride
Emissions: Whenever compliance emission testing is required, US EPA Method 26A or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), W is. Adm. Code]

(2) During operation, the permittee shall monitor and record the flow rate of the aqueous lime/recycled ash slurry to the dry flue gas desulfurization (FGD) system once every 8 hours of operation or once per day, whichever yields the great er number of measurements. [ss. NR 439.04(1)(d) and NR 439.055(1)(a), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) The permittee shall maintain records of: (a) The results of the compliance emission tests required by condition I.C.14.b.(3); and (b) The para meter monitoring and associated operating ranges for the parameter(s) identified in condition I.C.14.c.(2) as recorded during the compliance emission tests required by condition I.C.14.b.(3). [ss. NR 439.04(1)(d) and NR 439.11, Wis. Adm. Code]

75 Only hours when the boiler is operated shall be included in the average in I.C.2.b.(2).FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 103

C. Sta ck S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act:
National Emission Standa rds for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations: (1) For boiler B0 4 , the permittee shall comply with ONE of the following: (a) Filterable particulate matter may not exceed: 0.03 lbs/mmBtu or 0.3 lbs/MWh gross electric output; OR (b) Total no n

- Hg HAP metals may not exceed: 0.00005 lbs/mmBtu or 0.5 lbs/GWh; OR (c) Individual Metal HAP metals may not exceed all of the following: (i) Antimony (Sb): 0.8 lbs/TBtu or 0.008 lbs/GWh; (ii) Arsenic (As): 1.1 lbs/TBtu or 0.02 lbs/GWh; (iii) Beryllium (Be): 0.2 lbs/TBtu or 0.002 lbs/GWh; (iv) Cadmium (Cd): 0.3 lbs/TBtu or 0.003 lbs/GWh; (v) Chromium (Cr): 2.8 lbs/TBtu or 0.03 lbs/GWh; (vi) Cobalt (Co): 0.8 lbs/TBtu or 0.008 lbs/GWh; (vii) Lead (Pb): 1.2 lbs/TBtu or 0.02 lbs/GWh; (viii) Manganese (M n): 4.0 lbs/TBtu or 0.04 lbs/GWh; (ix) Nickel (Ni): 3.5 lbs/TBtu or 0.04 lbs/GWh; and (x) Selenium (Se): 5.0 lbs/TBtu or 0.06 lbs/GWh. [40 CFR s. 63.9991(a)(1) and 40 CFR Part 63, Subpart UUUUU, Table 2, condition 1.a.

, s. 285.65(13), Wis. Stats. ]

(2) For boiler B0 4 , the permittee shall comply with ONE of the following: (a) Hydrogen chloride (HCl) emissions may not exceed: 0.002 lbs/mmBtu or 0.02 lbs/MWh; OR (b) Sulfur dioxide (SO2) emissions may not exceed: 0.2 lbs/MMBtu or 1.5 lbs/MWh. (c) The alte rnate SO 2 limit in (b) shall only be used if the EGU: ( i ) Has a system using wet or dry flue gas desulfurization technology and SO 2 continuous emissions monitoring system (CEMS) installed on the unit; and ( ii) T he wet or dry flue gas desulfurization techn ology installed on the unit is operated consistent with 40 CFR

s. 63.10000(b) , at all times

. [40 CFR s s . 63.9991(a)(1) and (c), and 40 CFR Part 63, Subpart UUUUU, Table 2, condition 1.b.

, s. 285.65(13), Wis. Stats

. ]

(3) For boiler B0 4 , mercury emissions m ay not exceed: 1.2 lbs/TBtu or 0.013 lbs/GWh. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 2, condition 1.c.

, s. 285.65(13), Wis. Stats

. ]

(4) The emission limits ( I. C

. 15 .a.(1)

- (3) ) and operating limits ( I. C

. 15 .b.(4) ) in this sect ion apply at all times except during periods of startup and shutdown; however, the permittee is required to meet the work practice requirements in conditions
I. C

. 15 .b. (3) during periods of startup or shutdown

. [ 40 CFR s. 63.10000(a)

, s. 285.65(13), Wis. Stats

. ] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate that compliance with 40 CFR, Part 63, Subpart UUUUU has been achieved, by conducting the required performance tests and other
activ ities, no later than 180 days after April 16, 2015. [40 CFR s. 63.9984(f)

, s. 285.65(13), Wis. Stats. ] (1) Initial Performance Testing Requirements: Initial performance testing is required for all pollutants, to demonstrate compliance with the applicable
emission limits in section I. C

. 15 .a

. (a) The permittee may conduct the initial performance testing in accordance
with 40 CFR s. 63.10005(h), to determine whether the unit(s) qualifies as a low emitting EGU (LEE) for one or more applicable emissions limits , except if the EGU is equipped with an acid gas scrubber and has a main stack and bypass stack exhaust configuration. (b) For a qualifying LEE for Hg emissions limits, the permitee must conduct
a 30

- day performance test using Method 30B at least once ever y 12 calendar
months to demonstrate continued LEE status. (c) For a qualifying LEE of any other applicable emissions limits, the permittee must conduct a performance test at least once every 36 calendar
months to de monstrate continued LEE status.

{continue d on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 104

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Ac t: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [ 40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: The permittee shall conduct a tune

- up of the EGU burner and
combustion controls at least each 36 calendar months, or each 48 calendar months if neural network combustion optimization software is employed, as specified in 40 CFR s. 63.10021(e)

. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 3, condition 1.] (a) Perio dic tune

- ups of the EGU(s) shall be performed as part of the demonstration of continuous compliance [40 CFR s. 63.10000(e)] (b) The permittee shall perform the first tune

- up as part of the initial compliance demonstration. Notwithstanding this requirement, the permittee may delay the first burner inspection until the next scheduled unit outage provided the requirements
of 40 CFR s. 63.10005 are met. [40 CFR s. 63.10021(e)] (c) Subsequently, an inspection of the burner shall be performed at least once every 36 calendar months unless the EGU employs neural network combustion optimization during normal operations in which case an inspection of the burner and combustion controls shall be performed at least once every 48
calendar months. (d) Tune

- ups shall cons ist of the following: (i) As applicable, inspect the burner and combustion controls, and clean or replace any components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required inspect ion period. Repair of a burner or combustion control component requiring special order parts may be scheduled as
follows:

a) Burner or combustion control component parts needing replacement that affect the ability to optimize NO X and CO
must be installed w ithin 3 calendar months after the burner inspection, b) Burner or combustion control component parts that do not affect the ability to optimize NO X and CO may be installed on a schedule determined by the operator; (ii) As applicable, inspect the flame patt ern and make any adjustments to the burner or combustion controls necessary to optimize the flame pattern. The adjustment should be consistent with the manufacturer's specifications, if available, or in accordance with best combustion engineering practice for that burner type; (iii) As applicable, observe the damper operations as a function of mill and/or cyclone loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments and effecting repair to dampers, controls, mills, pulverizers, cyclones, and sensors; {continued on next page...} (1) Initial Performance Testing Requirements: {...continued from previous page...} (d) If an EGU does not qualify as a LEE for total non

mercury HAP metals, ind ividual non

- mercury HAP metals, or filterable particulate matter (PM), the permitee shall demonstrate compliance through an initial performance test and shall monitor continuous performance through either use of a particulate matter continuous parametric

m onitoring system (PM CPMS), a PM CEMS, or, for an existing EGU, compliance performance testing repeated quarterly. (i) If using PM CPMS, the permittee shall establish a
site

- specific operating limit corresponding to the results of the performance test demo nstrating compliance with the pollutant with which you choose to comply: total

non

- mercury HAP metals, individual non

- mercury HAP metals or filterable PM. The permittee shall use the PM CPMS to demonstrate continuous compliance with this operating limit. I f electing to use a PM CPMS, the permittee shall repeat the performance test annually for the selected pollutant limit and reassess and adjust the
site

- specific operating limit in accordance with the results of the performance test. (ii) The permittee may also opt to install and operate a particulate matter CEMS certified in accordance with Performance Specification 11 and Procedure 2 of 40 CFR part 60, Appendices B and F, respectively, in
accordance with 40 CFR s. 63.10010(i). ( e ) If an EGU does not qualif y as a LEE for hydrogen chloride (HCl), the permittee may demonstrate initial and continuous compliance through use of an HCl CEMS, installed and operated in accordance with Appendix B to 40 CFR, Part 63, Subpart UUUUU. As an alternative to HCl CEMS, the permittee may demonstrate initial and continuous compliance by conducting an initial and periodic quarterly performance stack test for HCl. If an EGU uses wet or dry flue gas desulfurization technology (this includes limestone injection into a fluidized be d combustion unit), the permittee may apply a second alternative to HCl CEMS by installing and operating a sulfur dioxide (SO 2 ) CEMS installed and operated in accordance with 40 CFR Part 75 to demonstrate compliance with the applicable SO 2 emissions limit. ( f

) If an EGU does not qualify as a LEE for Hg, the permittee shall demonstrate initial and continuous compliance through use of a Hg CEMS or a sorbent trap monitoring system, in accordance with Appendix A to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63. 10000(c)(1)

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 105

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regul ated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: (d) {...continued from previous page...} (iv) As applicable, evaluate windbox pressures and air proportions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

- fuel ratio and ensure that it is correctly calibrated and
fun ctioning properly. Such inspection may include calibrating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers to ensure that the systems are operated as designed. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior to the next

tune

- up, should be corrected or repaired as necessary; (vi) Optimize combustion to minimize generation of
CO and NO X . This optimization should be consistent with the manufacturer's specifications, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners, overfire air controls, concentric firing system im provements, neural network or combustion efficiency software, control systems calibrations, adjusting combustion zone temperature profiles, and
add

- on controls such as SCR and SNCR; CO optimization includes burners, overfire air controls, concentric firing system improvements, neural network or combustion efficiency software, control systems calibrations, and adjusting combustion zone temperature profiles; (vii) While operating at full load or the predominantly operated load, measure the
concentration in th e effluent stream of CO and NO X in ppm, by volume, and oxygen in volume percent,
before and after the tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments are made) . You may use portable CO,
NO X and O 2 monitors for this measurement. EGU's employing neural network optimization systems need only provide a single pre

- and post

- tune

- up value
rather than continual values before and after each optimization adjustment made by the system;

{continued on next page...} (2) Subsequent Performance Tests and Tune

- Ups: (a) For EGUs using PM CPMS to monitor continuous performance with an applicable emission limit as provided for under 40 CFR

s. 63.10000(c) (see condition I. C

. 15 .c.(1) ), you must conduct all applicable performance tests according to Table 5 to 40 CFR Part 63, Subpart UUUUU and 40 CFR s. 63.10007 at least every year. [40 CFR s. 63.10006(a)]

(b) For EGUs meeting the LEE requirements of 40 CFR

s. 63.10005(h) (see condition I. C

. 15 .b.(4)(h) ), the performance test shall be repeated once every 3 years (once every year for Hg) according to Table 5 and 40 CFR s. 63.10007. Should subsequent emissions testing results show the unit does not meet the LEE eligibility requirements, LEE status is lost. If this should occur: (i) For all pollutant emission limits except for Hg, the permittee shall conduct emissions testing quarterly, except as otherwise provided in 40 CFR s. 63.10021(d)(1). (ii) For Hg, the permittee shall install, certify, maintain, and operate a Hg CEMS or a sorbent trap monitoring system in accordance with Appendix A to 40 CFR, Part 63, Subpart UUUUU, within 6 calendar months of losing LEE eligibility. Until the Hg CEMS or sorbent trap monitoring system is installed, cert ified, and operating, the permittee shall conduct Hg emissions testing quarterly, except as otherwise provided in 40
CFR s. 63.10021(d)(1). You must have 3 calendar years of testing and CEMS or sorbent trap monitoring system data that satisfy the LEE emiss ions criteria to reestablish LEE status. [40 CFR s. 63.10006(b)]

(c) Except where paragraphs (a) or (b) of this condition apply, or where the permittee installs, certifies, and operates a PM CEMS to demonstrate compliance with a filterable PM emissions lim it, the permittee shall conduct all applicable periodic emissions tests for filterable PM, individual, or total HAP metals emissions according to Table 5 to Subpart UUUUU, 40 CFR s. 63.10007, and s. 63.10000(c), except as otherwise provided in s. 63.10021( d)(1).

(d) Except where paragraph (b) of this section applies, for coal

fired EGUs that do not use either an HCl CEMS to monitor compliance with the HCl limit or an SO 2 CEMS to monitor compliance with the alternate equivalent SO 2 emission limit, the permit tee shall conduct all applicable periodic HCl emissions tests according to Table 5 to Subpart UUUUU and 40 CFR s. 63.10007 at least quarterly, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(d)]

(e) {reserved} {continued on n ext page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 106

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR , ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (2) Periodic Tune

- Up Requirements: (d) {...continued from previous page...}

(viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in paragraphs (d)(i) through (ix) of this condition, including:

a) The concentrations of CO and NO X in the effluent stream in ppm by volume, and oxygen in volume percent, measu red before and after an adjustment of the EGU combustion systems; b) A description of any corrective actions taken as a part of the combustion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally capable of using more than one type of fuel during that period; and (ix) Report the dates of the initial and subsequent tune

ups as follows:

a) If the first required tune

- up is performed as part of
the initial c ompliance demonstration, report the date
of the tune

- up in hard copy (as specified in 40 CFR

s. 63.10030) and electronically (as specified in 40
CFR s. 63.10031). Report the date of each subsequent tune

- up electronically (as specified in 40
CFR s. 63.10031 ). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

up and all subsequent tune

- ups electronically, in
accordance with 40 CFR s. 63.10031. [40 CFR s. 63.10021(e)

, s. 285.65(13), Wis. Stats

. ]

(3) Monitoring During Startup and Shutdown: (a) The permittee shall operate all CMS during startup
and shutdown. (b) Startup means either the first

- ever firing of fuel in a boiler for the purpose of produc ing electricity, or the firing of fuel in a boiler after a shutdown event for any

purpose.

(i) Startup ends when any of the steam from the boiler is used to generate electricity for sale over the grid or for any other purpose (including on site use). (ii ) For startup of a unit, clean fuels shall be used, either natural gas or distillate oil or a combination of clean fuels for ignition. (iii) Once the EGU is converted to firing coal, all of the applicable control technologies except dry scrubber and
SCR s hall be engaged. (2) Subsequent Performance Tests and Tune

- Ups: {... continued from previous page...} (f) Unless following the requirements listed in paragraphs (g) and (h) of this condition, subsequent performance tests shall be
conducted as follows:

(i) per formance tests required at least every 3 calendar years must be completed within 35 to 37 calendar months after the previous performance test; (ii) performance tests required at least every year must be completed within 11 to 13 calendar months after the previous performance test; and (iii) performance tests required at least quarterly must be completed within 80 to 100 calendar days after the previous performance test, except as otherwise provided in 40 CFR

s. 63.10021(d)(1). [40 CFR s. 63.10006(f)]

(g ) If electing to demonstrate compliance using emissions averaging under 40 CFR s. 63.10009, the permittee shall continue to conduct performance stack tests at the appropriate frequency given in section (c) through (f) of this section. [40 CFR s. 63.10006( g)]

(h) If a performance test on a non

- mercury LEE shows emissions in excess of 50 percent of the emission limit and if the permittee chooses to reapply for LEE status, the permittee shall conduct performance tests at the appropriate frequency given in par agraphs (c) through (e) of this condition for that pollutant until all performance tests over a consecutive 3

- year period show compliance with the LEE criteria. [40 CFR s. 63.10006(h)]

(i) The permittee shall conduct performance tune

- ups according to
40 C FR s. 63.10021(e), as follows:

(i ) For EGUs not employing neural network combustion optimization during normal operation, each performance tune

- up specified in 40 CFR s. 63.10021(e) must be no more than 36 calendar months after the previous performance tun e

- up. (ii ) For EGUs employing neural network combustion optimization systems during normal operation, each performance tune

- up specified in 40 CFR s. 63.10021(e) must be no more than 48 calendar months after the previous performance tune

- up. [40 CFR s. 63. 10006(i)]

(j) The permittee shall report the results of performance tests and performance tune

- ups within 60 days after the completion of the performance tests and performance tune

- ups. The reports for all subsequent performance tests must include all appl icable information required in 40 CFR s. 63.10031 . [40 CFR s. 63.10006(j)] [40 CFR s. 63.10006

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 107

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subp art UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) Monit oring During Startup and Shutdown: (b) {...continued from previous page...}

(iv) Any dry scrubber and SCR systems, if present, shall be started appropriately to comply with relevant standards applicable during normal operation. (c) Shutdown means the cessa tion of operation of a boiler for any purpose.

(i) Shutdown begins either when none of the steam from the boiler is used to generate electricity for sale over the grid or for any other purpose (including on

- site use) or at the point of no fuel being fired in the boiler. (ii) Shutdown ends when there is both no electricity being generated and no fuel being fired in the boiler. (iii) During shutdown, all applicable control technologies shall be operated, while firing coal. (d) The EGU(s) shall comply with all applicable emissions limits at all times except for periods that meet the definitions of startup and shutdown in 40 CFR Part 63, Subpart UUUUU

. (e) The permittee shall keep records during periods of startup and shutdown. (f) The permittee shall prov ide reports concerning activities and periods of startup and shutdown, as specified in 40 CFR ss. 63.10011(g) and 63.10021(h) and (i)

. [40 CFR s. 63.9991(a)(1) and 40 CFR, Part 63, Subpart UUUUU, Table 3, conditions 3 and 4.

, s. 285.65(13),
Wis. Stats. ]

( 4) Operating Limits: The permittee shall meet the applicable operating limit in Table 4 to Subpart UUUUU
as follows: (a) If demonstrating compliance using a PM CPMS,
maintain the 30

- boiler operating day rolling average PM CPMS output at or below the high est 1

- hour average measured during the most recent performance test demonstrating compliance with the filterable PM, total

non

- mercury HAP metals (total HAP metals, for liquid
oil

- fired units), or individual non

- mercury HAP metals (individual HAP metals in cluding Hg, for liquid oil

- fired units) emissions limitation(s). (b) The operating limits apply at all times except during periods of startup and shutdown; however, the permittee is required to meet the work practice requirements in
conditions I. C

. 15 .b. (3 ) during periods of startup or
shutdown. [40 CFR s. 63.9991(a)(2), s. 63.10000(a), and Table 4 to 40 CFR, Part 63, Subpart UUUUU

, s. 285.65(13), Wis.
Stats. ] ( 3 ) Performance Tests

– Methods and Other Procedures: (a) Except as otherwise provided in this condition , the permittee shall conduct all required performance tests according to 40 CFR

s. 63.7(d), (e), (f), and (h). The permittee shall also develop a site

specific test plan according to the requirements in 40 CFR

s. 63.7(c). (i) If using CEMS (Hg, HCl, SO 2 , or other) to determine compliance with a 30

- boiler operating day rolling average emission limit, you must collect data for all nonexempt unit operating conditions (see 40 CFR s. 63.10011(g) and Table 3 to 40 CFR, Part 63, Subpart UUUUU). (ii) If conducting performance testing with test methods in lieu of continuous monitoring, operate the unit at maximum normal operating load conditions during each periodic (e.g., quarterly) performance test. Maximum normal operating load will be generally betwee n 90 and 110 percent of design capacity but should be representative of site specific normal operations during each test run. (iii) For establishing operating limits with particulate matter continuous parametric monitoring system (PM CPMS) to
demonstrate c ompliance with a PM or non Hg metals emissions limit, operate the unit at maximum normal operating load conditions during the performance test period. Maximum normal operating load will be generally between 90 and 110 percent of design capacity but should be representative of site specific normal operations during each test run. [40 CF R s. 63.10007(a)]

(b) The permittee shall conduct each performance test (including
traditional 3

- run stack tests, 30

- boiler operating day tests based on CEMS data (or sorbent trap monitoring system data), and 30

- boiler operating day Hg emission tests for LEE qualification) according to the requirements in Table 5 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10007(b)]

(c) If choosing the filterable PM method to comply with the PM emission limit and demonstrate continuous performance using a
PM CPMS as provided for in 40 CFR s. 63.10000(c), the permittee shall also establish an operating limit according to 40 CFR s. 63.10011(b), s. 63.10023, and Tables 4 and 6 to Subpart UUUU U. Should the permittee desire to have operating limits that correspond to loads other than maximum normal operating load, the permittee shall conduct testing at those other loads to determine the additional operating limits. [40 CFR s. 63.10007(c)]

{con tinued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 108

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean A ir Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 201 5. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (5) At all times the permittee shall operate and
maintain B0 4 , including the associated air pollution control eq uipment and monitoring equipment, in a manner consistent with safety and good air pollution control practices for minimizing emissions. Determination of whether such operation and maintenance procedures are being used will be based on information which may include, but is not limited to, monitoring results, review of operation and maintenance procedures, review of operation and maintenance records, and inspection of the source. [40 CFR s. 63.10000(b)

, s. 285.65(13), Wis. Stats

. ]

(6) Initial Compliance R equirements : (a) General Requirements: For each affected EGU, initial compliance with each applicable emission limit
in section I. C

. 15 .a. shall be demonstrated with performance testing. Where two emissions limits are specified for a particular pollutan t (e.g., a heat input

based limit in lb/MMBtu and an electrical output

based limit in lb/MWh), compliance may be
demonstrated with either emission limit.

One or more of the following activities may be required in conjunction with performance testing, as

a ppropriate: collection of hourly electrical load data (megawatts); establishment of operating limits according to 40 CFR s. 63.10011 and 40 CFR Part 63, Subpart UUUUU, Tables 4 and 7; and CMS performance evaluations. In all cases, you must
demonstrate init ial compliance no later than the applicable date in paragraph (f) of 40 CFR s.
63.10005 for tune

- up work practices for existing EGUs, in 40 CFR s. 63.9984.

(i) To demonstrate initial compliance with an applicable emissions limit in section I. C

. 15 .a. of th is permit using stack testing, the initial performance test generally consists of three runs at specified process operating conditions using approved methods. If required to establish operating limits (see paragraph (d) of 40 CFR s. 63.10005 and Table
4 to 40 CFR Part 63, Subpart UUUUU), the permittee shall collect all applicable parametric data during the performance test period. Also, if you choose to comply with an electrical output

- based emission limit, you must collect hourly electrical
load data durin g the test period.

{continued on next page...} ( 3 ) Performance Tests

– Methods and Other Procedures: {...continued from previous page...} (d) Except for a 30

- boiler operating day performance test based on CEMS (or sorbent trap monitoring system) data, where the concept of test runs does not apply, the permittee shall conduct a minimum of three separate test runs for each performance test, as specified in 40
CFR s. 63.7(e)(3). Each test run shall comply with the minimum applicable sampling time or volume specifie d in Table 1 or 2 to Subpart UUUUU. Sections 63.10005(d) and (h) of 40 CFR (see
conditions I. C

. 15 .b.(6)(d) and (h) ), respectively, provide special instructions for conducting performance tests based on CEMS or sorbent trap monitoring systems, and for condu cting emission tests for LEE qualification. [40 CFR s. 63.10007(d)]

(e) To use the results of performance testing to determine compliance with the applicable emission limits in I. C

. 15 .a. , proceed as follows: (i) Except for a 30

- boiler operating day perfor mance test based on CEMS (or sorbent trap monitoring system) data, if measurement results for any pollutant are reported as below the method detection level (e.g., laboratory analytical results for one or more sample components are below the method defined analytical detection level), the permittee shall use the method detection level as the measured emissions level for that pollutant in calculating compliance. The measured result for a multiple component analysis (e.g., analytical values for multiple Metho d 29 fractions both for individual HAP metals and for total HAP metals) may
include a combination of method detection level data and analytical data reported above the method detection level.

(ii) If the limits are expressed in lb/MMBtu or lb/TBtu, the

per mittee shall use the F

- factor methodology and equations in sections 12.2 and 12.3 of EPA Method 19 in Appendix A

- 7 to Part 60 of 40 CFR. In cases where an appropriate F

- factor is not listed
in Table 19

- 2 of Method 19, you may use F

- factors from Table 1
in section 3.3.5 of Appendix F to Part 75 of 40 CFR, or F

- factors derived using the procedures in section 3.3.6 of Appendix to Part 75 of 40 CFR. Use the following factors to convert the pollutant concentrations measured during the initial performance tests t o units of lb/scf, for use in the applicable Method 19 equations:

a) Multiply SO 2 ppm by 1.66 × 10 −7 ; b) Multiply HCl ppm by 9.43 × 10 −8 ; c) Multiply HF ppm by 5.18 × 10 −8 ; d) Multiply HAP metals concentrations (mg/dscm) by 6.24 ×
10 −8 ; and e) Multiply Hg concentrations (μg/scm) by 6.24 × 10 −11

. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 109

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standar ds for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (a) {...continued from previous page...}

(ii) To demonstrate initial compliance using either a CMS that

measures HAP concentrations directly ( i.e. , an Hg, HCl, or HF CEMS, or a sorbent trap monitoring system) or an SO 2 or PM CEMS, the initial performance test consists of 30 boiler operating days of data collected by the initial compliance demonstration date specifie d in 40 CFR s. 63.10005 with the certified monitoring system.

a) The 30

- boiler operating day CMS performance test must demonstrate compliance with the applicable Hg, HCl, HF, PM, or
SO 2 emissions limit in Table 1 or 2 to this subpart. b) If you choose to c omply with an electrical output

- based emission limit, you must collect hourly electrical load data during the performance test period. [40 CFR s. 63.10005(a)]

(b) Performance testing requirements: If using performance testing to demonstrate initial complia nce with the applicable emissions limits in
section I. C

. 15 .a. of this permit, the permittee shall conduct the tests according to 40 CFR s. 63.10007 and Table 5 to 40 CFR Part 63, Subpart UUUUU. For the purposes of the initial compliance demonstration, test data and results from a performance test conducted prior to April 16, 2015 , may be used provided that the following conditions are fully met:

(i) For a performance test based on stack test data, the test was conducted no more than 12 calendar months prio r to April 16, 2015 ; (ii) For a performance test based on data from a certified CEMS or sorbent trap monitoring system, the test consists of all valid CMS data recorded in the 30 boiler operating days immediately preceding April 16, 2015 ; (iii) The perform ance test was conducted in accordance with all applicable requirements in 40 CFR s. 63.10007 and Table 5 to 40 CFR Part 63 Subpart UUUUU; (iv) A record of all parameters needed to convert pollutant concentrations to units of the emission standard (e.g., st ack flow rate, diluent gas concentrations, hourly electrical loads) is available for the entire performance test period; and (v) For each performance test based on stack test data, the permittee certifies, and keeps documentation demonstrating, that the EG U configuration, control devices, and fuel(s) have remained consistent with conditions since the prior performance test was conducted. [40 CFR s. 63.10005(b)]

(c) Operating limits: In accordance with 40 CFR s. 63.10010 and Table 4 to 40 CFR Part 63, Subp art UUUUU, the permitee may be required to establish operating limits using PM CPMS as part of the initial compliance demonstration. [40 CFR s. 63.10005(c)] (3) Performance Tests

– Methods and Other Procedures: (e) {...continued from pre vious page...} (iii) To determine compliance with emission limits expressed in lb/MWh or lb/GWh, the permittee shall first calculate the pollutant mass emission rate during the performance test, in units of lb/h. For Hg, if a CEMS or sorbent trap monitoring system is used, use Equation A

- 2 or
A

- 3 in Appendix A to 40 CFR, Part 63, Subpart UUUUU (as applicable). In all other cases, use an equation that has the general form of Equation A

2 or A

- 3, replacing the value of K with 1.66 ×
10 −7 lb/scf

- ppm for SO 2 , 9. 43 × 10 −8 lb/scf

- ppm for HCl (if an HCl CEMS is used), or 6.24 × 10 −8

lb

- scm/mg

- scf for HAP metals and for HCl (when performance stack testing is used), and defining
C h as the average SO 2 or HCl concentration in ppm, or the average HAP metals concentration in mg/dscm. This calculation requires stack gas volumetric flow rate (scfh) and (in some cases) moisture content data (see 40 CFR

ss. 63.10005(h)(3) and 63.10010). Then, if the applicable emission limit is in units of lb/GWh, use Equation A

- 4 in Appendix A to Subpart UUUUU to calculate the pollutant emission rate in lb/GWh. In this calculation, define (M) h as the calculated pollutant mass emission rate for the performance test (lb/h), and define (MW) h as the average electrical load during the performance

t est (megawatts). If the applicable emission limit is in lb/MWh rather than lb/GWh, omit the 10 3 term from Equation A

- 4 to determine the pollutant emission rate in lb/MWh. [40 CFR s. 63.10007(e)]

(f) Upon request, the permittee shall make available
to the d epartment such records as may be necessary to determine whether the performance tests have been done according to the requirements of this section. [40 CFR s. 63.10007(f)] [40 CFR s. 63.10007

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 110

C. Stack S04, Boiler B04, Con trol Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards for H APs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.99 84(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page...} (d) CMS requirement: If required to (or electing to) demonstrate initial compliance using a cont inuous monitoring system, the CMS must pass a performance evaluation prior to the initial compliance demonstration. If a CMS has been previously certified under another state or federal program and is continuing to meet the on

- going quality

- assurance (QA) requirements of that program, then, provided that the certification and QA provisions of that program meet the applicable requirements of 40 CFR ss. 63.10010(b) through (h), an additional performance evaluation of the CMS is not required.

(i) The permittee may demonstrate initial compliance with the applicable SO 2 or HCl,
emissions limit in condition I. C

. 15 .a.(2) through use
of an SO 2 or HCl CEMS installed and operated in accordance with 40 CFR, Part 75 or 40 CFR, Part 63, Subpart UUUUU, Appendix B, as appl icable. The permittee may demonstrate compliance with a
filterable PM emission limit in condition
I. C

. 15 .a.(1) (a) through use of a PM CEMS installed, certified, and operated in accordance with
40 CFR s. 63.10010(i). Initial compliance is
achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS data, expressed in units of the standard (see 40 CFR

s. 63.10007(e)), meets the applicable SO 2 , PM, or
HCl emissions limit in section I.A.7.a. of this permit. Use Equation 19

- 19 of Met hod 19 in Appendix A

- 7 to 40 CFR, Part 60 to calculate the
30

- boiler operating day average emissions rate. ( N OTE : For this calculation, the term E hj in Equation
19

- 19 must be in the same units of measure as the applicable HCl emission limit in condition
I. C

. 15 .a.(2) (a)

. (ii) When demonstrating compliance with the applicable emission limits for total non

- mercury HAP metals, individual non

- mercury HAP metals, total HAP metals, individual HAP metals, or
filterable PM in section I. C

. 15 .a. of this permit using initial performance testing and continuous monitoring with PM CPMS, the permittee shall:

a) Demonstrate initial compliance no later than 180 days after April 16, 2015;

{continued on next page...} ( 4 ) Continuous Monitoring System Requirements: (a) If demonst rating compliance with any applicable emissions limit through use of a continuous monitoring system (CMS), where a CMS includes a continuous parameter monitoring system (CPMS) as well as a continuous emissions monitoring system (CEMS), the permitee
shall d evelop a site

- specific monitoring plan and submit this site

specific monitoring plan, if requested, at least 60 days before the initial performance evaluation (where applicable) of your CMS. The requirement to develop and submit a site

- specific monitoring plan does not apply to affected sources with existing monitoring plans that apply to CEMS and CPMS prepared under Appendix B to 40 CFR Part 60 or Part 75, and that meet the requirements of 40 CFR

s. 63.10010. (The permittee may use the process described i n § 63.8(f)(4), to request approval of monitoring system quality assurance and quality control procedures alternative to those specified in this condition and, if approved, include those in the site

- specific monitoring plan.) The monitoring plan shall addr ess the provisions in (b) through (e) below. (b) The site

- specific monitoring plan shall include the information specified in condition (e), below. Alternatively, the requirements of condition (e) are considered to be met for a particular CMS or sorbent

t rap monitoring system if: (i) The CMS or sorbent trap monitoring system is installed, certified, maintained, operated, and quality

- assured either according to 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU; and (ii) The recordkeeping and reporting requirements of 40 CFR, Part 75, or Appendix A or B to 40 CFR, Part 63, Subpart UUUUU, that pertain to the CMS are met. (c) If requested by the department, the permittee shall submit the monitoring plan (or relevant portion of the plan) at l east 60 days before the initial performance evaluation of a particular CMS, except where the CMS has already undergone a performance evaluation that meets the requirements of 40 CFR s. 63.10010 (e.g., if the CMS was previously certified under another progr am). (d) The permittee shall operate and maintain the CMS according to
the site

- specific monitoring plan. (e) The provisions of the site

- specific monitoring plan shall address the following items: (i) Installation of the CMS or sorbent trap monitoring syst em sampling probe or other interface at a measurement location relative to each affected process unit such that the measurement is representative of control of the exhaust emissions (e.g., on or downstream of the last control device). See 40 CFR s. 63.1001 0(a) for further details. For PM CPMS installations, follow the procedures in 40 CFR s. 63.10010(h).

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 111

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rate d at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Su bpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Ini tial Compliance Requirements : (d) (ii) {...continued from previous page...} b) Demonstrate continuous compliance with the
PM CPMS site

- specific operating limit that corresponding to the results of the performance test demonstrating compliance with the emission limit with which the permittee has chosen to comply;
and c) Repeat the performance test annually for the selected pollutant emissions limit and reassess and adjust the site

- specific operating limit in accordance with the results of the performanc e test. (iii) When demonstrating compliance with the Hg
emission limit in I. C

. 15 .a.(3) using Hg CEMS or sorbent trap monitoring systems, initial compliance shall be demonstrated no later than 180 days after April 16, 2015. Initial compliance is achieved if the arithmetic average of 30

- boiler operating days of quality

- assured CEMS (or sorbent trap monitoring system) data, expressed in units of the standard (see section 6.2 of Appendix A to 40 CFR, Part 63, Subpart UUUUU), meets the applicable Hg emission
limit in I. C

. 15 .a.(3)

. [40 CFR s. 63.10005(d)]

(e) Tune

- ups: As part of the initial compliance demonstration, the permittee shall conduct a performance tune

- up of each EGU according to 40
CFR s. 63.10021(e). [40 CFR s. 63.10005(e)]

(f) For existing affected sources a tune

- up may occur prior to April 16, 2012, so that existing sources without neural networks have up to 42 calendar months (3 years from promulgation plus 180 days) or, in the case of units employing neural network combustion controls, up to 54 c alendar months (48 months from promulgation plus 180 days) after the date that is specified for your source in 40 CFR s. 63.9984 and according to the applicable provisions in s. 63.7(a)(2) as cited in Table 9 to Subpart UUUUU to demonstrate compliance with this requirement. If a tune

- up occurs prior to such date, the source must maintain adequate
records to show that the tune

- up met the requirements of this standard. [40 CFR s. 63.10005(f)]

(g) {reserved}

{continued on next page...} ( 4 ) Continuous Monitorin g System Requirements: (e) {...continued from previous page...} (ii) Performance and equipment specifications for the sample interface, the pollutant concentration or parametric signal analyzer, and the data collection and reduction system s. (iii) Schedule for conducting initial and periodic performance
evaluations. (iv) Performance evaluation procedures and acceptance criteria (e.g., calibrations), including the quality control program in accordance with the general requirements of 40 CFR s. 63.8(d). (v) On

- going operation and maintenance procedures, in accordance with the general requirements of 40 CFR

ss. 63.8(c)(1)(ii), (c)(3), and (c)(4)(ii). (vi) Conditions that define a CMS that is out of control consistent
with 40 CFR s. 63.8(c)(7)(i ) and for responding to out of control periods consistent with 40 CFR ss. 63.8(c)(7)(ii) and (c)(8). (vii) On

- going recordkeeping and reporting procedures, in accordance with the general requirements of 40 CFR ss. 63.10(c), (e)(1), and (e)(2)(i), or as spe cifically required under 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10000(d)

, s. 285.65(13), Wis. Stats

. ]

( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (a) For the CEMS, PM CPMS, and sorbent trap monitoring systems used to prov ide data under 40 CFR, Part 63, Subpart UUUUU, the permittee shall comply with the continuous monitoring system installation requirements for the appropriate exhaust configurations as required by 40 CFR s. 63.10010(a). (Exhaust configurations
include but are not limited individual stacks, a common stack configuration or a main stack plus a bypass stack.) [40 CFR s. 63.10010(a)]

(b) If using an oxygen (O 2 ) or carbon dioxide (CO 2 ) CEMS to convert measured pollutant concentrations to the units of the appl icable emissions limit, the O 2 or CO 2 concentrations shall be monitored at a location that represents emissions to the atmosphere, i.e., at the outlet of the EGU, downstream of all emission control devices. The permittee shall install, certify, maintain, a nd operate the CEMS according to Part 75 of 40 CFR. Use only quality

- assured O 2 or CO 2 data in the emissions calculations; do not use Part 75 substitute data values. [40 CFR s. 63.10010(b)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 112

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b )] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : {...continued from previous page...} (h) Low emitting EGUs: The provisions of this paragraph (h) apply to all pollutants with emissions
l imits from existing EGUs. This compliance option may not be pursued, if for EGUs equipped with an acid gas scrubber and with a main stack and bypass stack exhaust configuration.

(i) An EGU may qualify for low emitting EGU (LEE) status for Hg, HCl, filterab le PM, total non

Hg HAP metals, or individual non

- Hg HAP metals if performance test data is collected that meets the requirements of this paragraph (h), and if those data
demonstrate:

a) For all pollutants except Hg, performance test
emissions results less than 50 percent of the applicable emissions limits in I. C

. 15 .a. for all required testing for 3 consecutive years; or b) For Hg emissions, either:

1) Average emissions less than 10 percent of the applicable Hg emissions limit in
I. C

. 15 .a.(3) (expressed e ither in units of lb/TBtu or lb/GWh); or 2) Potential Hg mass emissions of 29.0 or fewer pounds per year and compliance with the applicable Hg emission limit in I. C

. 15 .a.(3) (expressed either in units of lb/TBtu or lb/GWh). (ii) For all pollutants except Hg, the permittee shall conduct all required performance tests described in
40 CFR s. 63.10007 to demonstrate that a unit qualifies for LEE status.

a) When conducting emissions testing to demonstrate LEE status, the permittee shall
increase the minimum sam ple volume specified in Table 1 or 2 to 40 CFR, Part 63, Subpart UUUUU nominally by a factor of two. b) Follow the instructions in 40 CFR

s. 63.10007(e) and Table 5 to Subpart UUUUU to convert the test data to the units of the applicable
standard.

{continu ed on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (c) If required to use a stack gas flow rate monitor, either for routine operation of a sorbent trap monitoring system or to convert p ollutant concentrations to units of an electrical output

- based emission standard in Table 1 or 2 to Subpart UUUUU, the permittee shall install, certify, operate, and maintain the monitoring system and conduct on

- going quality

- assurance testing of the syste m according to Part 75 of 40 CFR. Use only unadjusted, quality

- assured flow rate data in the emissions calculations. Do not apply bias adjustment factors to the
flow rate data and do not use substitute flow rate data in the calculations. [40 CFR s.63.1001 0(c)]

(d) If required to make corrections for stack gas moisture content when converting pollutant concentrations to the units of an emission standard in Table 1 of 2 to Subpart UUUUU, the permittee shall install, certify, operate, and maintain a moisture monitoring system in accordance with Part 75 of 40 CFR. Alternatively, for coal

- fired units, appropriate fuel

- specific default moisture values from 40 CFR

s. 75.11(b) may be used to estimate the moisture content of the stack gas. If a moisture monitoring s ystem is installed and operated, do not use substitute moisture data in the emissions calculations. [40 CFR s. 63.1001(d)]

(e) If using an HCl CEMS, the permittee shall install, certify, operate, maintain, and quality

- assure the data from the monitoring s ystem in accordance with Appendix B to Subpart UUUUU. Calculate and
record a 30

- boiler operating day rolling average HCl emission rate in the units of the standard, updated after each new boiler operating day.
Each 30

- boiler operating day rolling average e mission rate is the average of all the valid hourly HCl emission rates in the preceding 30 boiler operating days (see section 9.4 of Appendix B to Subpart UUUUU). [40 CFR s. 63.10010(e)]

(f)(i) If using an SO 2 CEMS, the permittee shall install the monitor at the outlet of the EGU, downstream of all emission control devices, and shall certify, operate, and maintain the CEMS according to
Part 75 of 40 CFR. (ii) For on

- going QA, the SO 2 CEMS shall meet the applicable daily, quarterly, and semiannual or annual requirements in sections 2.1 through 2.3 of Appendix B to Part 75 of 40 CFR, with the following addition: The permittee shall perform the linearity checks required in section 2.2 of Appendix B to Part 75 of 40 CFR
if the SO 2 CEMS has a span value of 30 pp m or less.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 113

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulate d by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later th an April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) {...continued from previous page...} (iii) Fo r Hg, the permittee shall conduct a 30

- boiler operating day performance test using Method 30B in Appendix A

- 8 to 40 CFR Part 60 to determine whether a unit qualifies for LEE status. Locate the Method 30B sampling probe tip at a point within the 10 percent centroidal area of the duct at a location that meets Method 1 in Appendix A

- 1 to 40 CFR Part 60 and conduct at least three nominally equal length test runs over the 30

- boiler operating day test period. Collect Hg emissions data continuously over
the entire test period (except when changing sorbent traps or performing required reference method QA procedures), under all process operating conditions. The permittee may use a pair of sorbent traps to sample the stack gas for no more than 10 days.

a) Depending on whether LEE status for Hg is
assessed in terms of the lb/TBtu or lb/GWh
emission limit in I. C

. 15 .a.(3) or in terms of the annual Hg mass emissions limit of 29.0 lb/year, the permittee shall collect some or all of the following data during the 30

- boiler op erating day test period (see paragraph (h)(iii)c) of this condition):

1) Diluent gas (CO 2 or O 2 ) data, using either Method 3A in Appendix A

- 3 to Part 60 of 40 CFR or a diluent gas monitor that has been certified according to Part 75 of 40 CFR. 2) Stack ga s flow rate data, using either Method 2, 2F, or 2G in Appendices A

- 1 and A

- 2 to Part 60 of 40 CFR, or a flow rate monitor that has been certified according to Part 75 of 40 CFR. 3) Stack gas moisture content data, using either Method 4 in Appendix A

- 1 to P art 60 of 40 CFR, or a moisture monitoring system that has been certified according to Part 75 of 40 CFR. Alternatively, an appropriate fuel

- specific
default moisture value from 40 CFR s. 75.11(b) may be used in the calculations. 4) Hourly electrical load data (megawatts), from facility records.

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (f) {...continued from previous page...} (iii) Calculate and record a 30

- boiler operating day rolli ng average SO 2 emission rate in the units of the standard, updated after each new boiler operating day. Each 30

- boiler operating day rolling average emission rate is the average of all of the valid SO 2 emission rates in the preceding 30 boiler operating da ys. (iv) Use only unadjusted, quality

- assured SO 2 concentration values in the emissions calculations; do not apply bias adjustment factors
to the Part 75 SO 2 data and do not use Part 75 substitute data
values. [40 CFR s. 63.10010(f)]

(g) If using a Hg CEMS or a sorbent trap monitoring system, the permittee shall install, certify, operate, maintain and quality

- assure the data from the monitoring system in accordance with Appendix A to Subpart UUUUU. The permittee shall calculate and record a 30

- (or, if alte rnate emissions averaging is used, 90

- ) boiler operating day rolling average Hg emission rate, in units of the standard, updated after each new boiler operating day. Each 30

- (or, if alternate emissions averaging is used, 90

- ) boiler operating day rolling average emission rate, calculated according to section 6.2 of Appendix A to Subpart UUUUU, is the average of all of the valid hourly Hg emission rates in the preceding 30

- (or, if alternate emissions averaging is used, a 90

- ) boiler operating days. Section 7.1.4.3 of Appendix A to Subpart UUUUU explains how to reduce sorbent trap monitoring system data to an hourly basis. [40 CFR s. 63.10010(g)]

(h) If using a PM CPMS to demonstrate continuous compliance with an operating limit, the permittee shall install , calibrate, maintain, and operate the PM CPMS and record the output of the system as follows: (i) Install, calibrate, operate, and maintain the PM CPMS according to the procedures in the approved site

- specific monitoring plan developed in accordance with 40 CFR s. 63.10000(d), and meet the requirements the following: a) The operating principle of the PM CPMS shall be based on
in

- stack or extractive light scatter, light scintillation, beta attenuation, or mass accumulation detection of the exhaust gas

or re presentative sample. The reportable measurement output from the PM CPMS may be expressed as milliamps, stack concentration, or other raw data signal. b) The PM CPMS shall have a cycle time ( i.e. , period required to complete sampling, measurement, and rep orting for each measurement) no longer than 60 minutes. c) The PM CPMS shall be capable, at a minimum, of detecting and responding to particulate matter concentrations of 0.5 mg/acm. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 114

C. Stack S04, Boiler B04, Control Device C 04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)]

b. C ompliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) (iii) {...continued from previous page...} b) If a CEMS is used to measure CO 2 (or O 2 ) concentration, and/or flow rate, and/or mois ture, record hourly average values of each parameter throughout the 30

- boiler operating day test period. If opting to use EPA reference methods rather than CEMS for any parameter, the permittee shall perform at least one representative test run on each ope rating day of the test period, using the applicable reference
method. c) Calculate the average Hg concentration, in μg/m 3 (dry basis), for the 30

- boiler operating day performance test, as the arithmetic average of all Method 30B sorbent trap results. Also calculate, as applicable, the average values of
CO 2 or O 2 concentration, stack gas flow rate, stack gas moisture content, and electrical load for the test period. Then:

1) To express the test results in units of lb/TBtu, follow the procedures in 40 CFR

s. 63.10007(e). Use the average Hg concentration and diluent gas values in the
calculations. 2) To express the test results in units of lb/GWh, use Equations A

- 3 and A

- 4 in section 6.2.2 of Appendix A to Subpart UUUUU, replacing the hourly values “C h ”, “Q h ”, “B
ws ” and “(MW) h ” with the average values of these parameters from the performance test. 3) To calculate pounds of Hg per year, use one of the following methods:

A) Multiply the average lb/TBtu Hg emission rate (determined according to paragraph (h)(3)(iii )(A) of this section) by the maximum potential annual heat input to the unit (TBtu), which is equal to the maximum rated unit heat input (TBtu/hr) times 8,760 hours. If the maximum rated heat input value is expressed in units of MMBtu/hr, multiply it by 10 −6 to convert it to TBtu/hr; or

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (h) {...continued from previous page...} (ii) Complete the initial performance evaluation no later than
October 13, 2015.

(iii) Collect PM CPMS hourly average output data for all boiler operating hours except as indicated in paragraph (h)(v) of this condition. Express the PM CPMS output as milliamps, PM concentration, or other raw data signal value.

(iv) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CPMS output collected during all nonexempt boiler operating hours data (e.g., milliamps, PM concentration, raw data signal).

(v) The permittee shall collect data using t he PM CPMS at all times the process unit is operating and at the intervals specified in paragraph (h)(i)b) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, required monitoring system quality assurance or quality control activities (including, as applicable, calibration checks and required zero and span adjustments), and any scheduled
maintenance as defined in the site

- specific monitoring plan.

(vi) The permittee shall use all th e data collected during all boiler operating hours in assessing the compliance with your operating limit except:

a) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctions, or required monitoring sys tem quality assurance or quality control activities conducted during monitoring system malfunctions are not used in calculations (report any such periods in your annual deviation report); b) Any data collected during periods when the monitoring system
is o ut of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or quality control activities conducted during out

- of

- control per iods are not used in calculations (report emissions or operating levels and report any such periods in the annual deviation report); c) Any data recorded during periods of startup or shutdown. (vii) The permittee shall record and make available upon reques t results of PM CPMS system performance audits, as well as the dates and duration of periods from when the PM CPMS is out of control until completion of the corrective actions necessary to return the PM CPMS to operation consistent with the site

- specific

m onitoring plan. [40 CFR s.63.10010(h)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 115

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazard ous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Initial Compliance Requirements : (h) (iii)c) 3) {...continued fr om previous page...} B) Multiply the average lb/GWh Hg emission rate (determined according to paragraph (h)(3)(iii)(B) of this section) by the maximum potential annual electricity generation (GWh), which is equal to the maximum rated electrical output of the unit (GW) times 8,760 hours. If the maximum rated electrical output value is expressed in units of MW, multiply it by 10 −3 to convert it to GW;

or C) If an EGU has a federally

- enforceable permit limit on either the annual heat input or the number of annual operating hours, you may modify the calculations in paragraph (h)(3)(iii)(C)(1) of this section by replacing
the maximu m potential annual heat input or 8,760 unit operating hours with the permit limit on annual heat input or operating hours (as applicable). [40 CFR s. 63.10005(h)]

(i) {reserved}

(j) Startup and shutdown: The permitee shall follow the requirements given in Table 3 to 40 CFR, Part 63, Subpart
UUUUU. [40 CFR s. 63.10005(j)]

(k) The permittee shall submit a Notification of Compliance Status summarizing the results of the initial compliance demonstration, as provided in 40 CFR s. 63.10030 . [40 CFR s.
63.1000 5(k)] [40 CFR s. 63.10005, s. 285.65(13), Wis. Stats. ]

( 7 ) Initial Demonstration of Compliance with Emission
Limitations and Work Practice Standards: (a) The permittee shall demonstrate initial compliance with each
emissions limit in I. C

. 15 .a. by conduct ing performance testing. [40 CFR s. 63.10011(a)]

(b) If demonstrating initial compliance with HAP metals or filterable PM emission limit(s) through performance stack tests and electing to use a PM CPMS to demonstrate continuous performance, the permittee shall also establish a site

- specific operating limit, in accordance with Table 4 to Subpart UUUUU,
40 CFR s. 63.10007, and Table 6 to Subpart UUUUU. The permittee may use only the parametric data recorded during successful performance tests ( i.e. , tests th at demonstrate compliance with the applicable emissions limits) to establish an operating limit. [40 CFR s. 63.10011(b)]

{continued on next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: {...continued from previous page...} (i) If choosing to comply with the PM filterable emissions limit in lieu of metal HAP limits, the permittee may choose to install, certify, operate, and maintain a PM CEMS and record the output of the PM CEMS as specified in paragraphs (i)(i) through (v) of th is condition, below. The compliance limit will be expressed as a 30

- boiler operating day rolling average of the numerical emissions limit value applicable for the unit in tables 1 or 2 to Subpart UUUUU.

(i) Install and certify the PM CEMS according to the procedures and requirements in Performance Specification 11

— Specifications and Test Procedures for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix B to Part 60 of 40 CFR, using Method 5 at Appendix A

- 3 to Part 60 of 40 CFR and ensuring that the front half filter temperature shall be 160° ± 14 °C (320° ± 25 °F). The reportable measurement output from the PM CEMS must be expressed in units of the applicable emissions limit (e.g., lb/MMBtu, lb/MWh).

(ii) Operate and maintain the PM CEMS according to the procedures and requirements in Procedure 2

— Quality Assurance Requirements for Particulate Matter Continuous Emission Monitoring Systems at Stationary Sources in Appendix F to Part 60 of 40 CFR.

a) The permittee shall c onduct the relative response audit (RRA) for the PM CEMS at least once annually. b) The permittee shall conduct the relative correlation audit (RCA) for the PM CEMS at least once every 3 years.

(iii) Collect PM CEMS hourly average output data for
all boile r operating hours except as indicated in paragraph (i) of this condition.

(iv) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average PM CEMS output data collected during all nonexempt boiler operating hours.

{contin ued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 116

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) Initial Demonstration of Compliance with
Emission Limitations and Work Practice Standards: {...continued from pr evious page...} (c)(i) If using CEMS or sorbent trap monitoring systems to measure a HAP (e.g., Hg or HCl) directly, the first 30

- boiler operating day (or, if alternate emissions averaging is used for Hg, the 90

- boiler operating day) rolling average emission rate obtained with certified
CEMS after April 16, 2015 (or, if applicable, prior to that date, as described in 40 CFR

s. 63.10005(b)(2)), expressed in units of the standard, is the initial performance test. Initial compliance is demonstrated if the
result s of the performance test meet the applicable emission limit in I. C

. 15 .a. (ii) For a unit that uses a CEMS to measure
SO 2 or PM emissions for initial compliance, the first 30 boiler operating day average
emission rate obtained with certified CEMS
after Apr il 16, 2015 (or, if applicable, prior to that date, as described in 40 CFR

s. 63.10005(b)(2)), expressed in units of the standard, is the initial performance test. Initial compliance is demonstrated if the results of the performance test meet the applicabl e SO 2 or filterable PM emission
limit in I. C

. 15 .a. [40 CFR s.10011(c)]

(d) For candidate LEE units, use the results of the performance testing described in 40 CFR

s. 63.10005(h) to determine initial compliance with the applicable emission limit(s) in I. C

. 1 5 .a

. and to determine whether the unit qualifies for LEE status. [40 CFR s. 63.10011(d)]

(e) The permittee shall submit a Notification of Compliance Status containing the results of the initial compliance demonstration, according to 40 CFR s. 63.10030(e). [40 CFR s. 63.10011(e)] ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (i) {...continued from previous page...} (v) The permittee shall collect data using the PM CEMS at all times the process unit is operating and at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, and required monitoring system quality assurance or quality control activities.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the operating limit except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctio ns, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in calculations and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitoring s ystem is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system quality assurance or control activities conducted during out of control p eriods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) Any data recorded during periods of startup or shutdown. b) The permittee shall record and make available upon request result s of PM CEMS system performance audits, dates and duration of periods when the PM CEMS is out of control to completion of the corrective actions necessary to return the PM CEMS to operation
consistent with the site

- specific monitoring plan. [40 CFR s. 63.1 0010(i)]

(j) The permittee may choose to comply with the metal HAP emissions limits using CEMS approved in accordance with 40 CFR s. 63.7(f) as an alternative to the performance test method specified in 40 CFR, Part 63, Subpart UUUUU. If approved to use a HAP metals CEMS, the compliance limit will be expressed as a 30

- boiler operating day rolling average of the
numerical emissions limit value in I. C

. 15 .a.(1) . If approved, the permittee may choose to install, certify, operate, and maintain a HAP metals CEMS and record the output of the HAP metals CEMS as specified below: (i) a) Install and certify the HAP metals CEMS according to the

procedures and requirements in the approved site

- specific test plan as required in 40 CFR s. 63.7(e). The reportable measurem ent output from the HAP metals CEMS shall be expressed in units of the applicable emissions limit ( e.g. , lb/MMBtu, lb/MWh) and in the form
of a 30

- boiler operating day rolling average. b) Operate and maintain the HAP metals CEMS according to the procedures and criteria in the site specific performance evaluation and quality control program plan required in 40 CFR s. 63.8(d).

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 117

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulver ized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units , 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring:
(7) Initial Demonstration of Compliance with Emission Limitations and Work Practice Standards: {...continued from previous page...} (f)(i) The permittee shall determine the fuel whose combustion produces the least uncontrolled emissions, i.e. , t he cleanest fuel, either natural gas or distillate oil, that is available on site or accessible nearby for use during periods of startup
or shutdown. (ii) The cleanest fuel available, either natural gas or distillate oil, for use during periods of startup or shutdown determination may take safety
considerations into account. [40 CFR 2. 63.10011(f)]

(g) The permittee shall follow the startup or shutdown requirements given in Table 3 to 40 CFR, Part 63, Subpart UUUUU for EGU. [40 CFR s. 63.10011(g)]

[40 CFR s. 63.10011

, s. 285.65(13), Wis. Stats

. ]

( 8 ) Continuous Compliance Demonstration: (a) The permittee shall demonstrate continuous compliance with each emissions limit in Table 2 to Subpart UUUUU (see condition I. C

. 15 .a. ), each operating limit in Table 4 t o subpart UUUUU (see
condition I. C

. 15 .b.(4) ), and each work practice standard in Tables 3 to Subpart UUUUU (see
conditions I. C

. 15 .a.(4) and I. C

. 15 .b.(3)) that applies, according to the monitoring specified in Tables 6 and 7 to Subpart UUUUU as outlined bel ow and
conditions I. C

. 15 .b.(8)(b) through (g)

.

(i) If using CEMS to measure filterable PM, SO 2 , HCl, or Hg emissions, or using a sorbent trap monitoring system to measure Hg to demonstrate compliance with the applicable emission limitations
in I. C

. 15 .a ., the permittee shall demonstrate continuous compliance by calculating the 30

- (or
90

- ) boiler operating day rolling arithmetic average emissions rate in units of the applicable emissions standard basis at the end of each boiler operating day using all of t he quality assured hourly average CEMS or sorbent trap data for the previous 30

- boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 1 of Table 7 to 40 CFR, Part 63, Subpart UUUUU]

{continued o n next page...} ( 5 ) Monitoring, Installation, Operation and Maintenance Requirements: (j) {...continued from previous page...}

(ii) Collect HAP metals CEMS hourly average output data for all boiler operating hours except as indicated in section ( j)(iv) of this
condition.

(iii) Calculate the arithmetic 30

- boiler operating day rolling average of all of the hourly average HAP metals CEMS output data collected during all nonexempt boiler operating hours data.

(iv) The permittee shall collect data usin g the HAP metals CEMS at all times the process unit is operating and at the intervals specified in paragraph (a) of this condition, except for periods of monitoring system malfunctions, repairs associated with monitoring system malfunctions, and required m onitoring system quality assurance or quality control activities.

a) The permittee shall use all the data collected during all boiler operating hours in assessing the compliance with the emission limit except:

1) Any data collected during monitoring system malfunctions, repairs associated with monitoring system malfunctions, or required monitoring system quality assurance or control activities conducted during monitoring system malfunctions in calculations and report any such periods in the annual deviation report; 2) Any data collected during periods when the monitoring system is out of control as specified in the site

- specific monitoring plan, repairs associated with periods when the monitoring system is out of control, or required monitoring system qualit y assurance or control activities conducted during out of control periods in calculations used to report emissions or operating levels and report any such periods in the annual deviation report; 3) Any data recorded during periods of startup or shutdown.
b ) The permittee shall record and make available upon request results of HAP metals CEMS system performance audits, dates and duration of periods when the HAP metals CEMS is out of control to completion of the corrective actions necessary to return
the HAP metals CEMS to operation consistent with the site

specific performance evaluation and quality control program plan. [40 CFR s. 63.10010(j)]

[40 CFR s. 63.10010 , s. 285.65(13), Wis. Stats

. ]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 118

C. Stack S04, Boiler B04, Control D evice C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (N ESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (a) {...continued from previous page...}

(ii) If choosing to establish PM CPMS operating limits as allowed by I. C

. 15 .b.(4) to d emonstrate compliance with the emission limitations in
I. C

. 15 .a.(1) (p articulate matter (PM), total non

mercury HAP metals, individual non

- mercury HAP metals), the permitee shall

a) Install, certify, maintain, and operate a PM CPMS for monitoring emission s discharged to the atmosphere according to 40 CFR s. 63.10010(g)(1) and b) Establish a site

- specific operating limit in units of PM CPMS output signal (e.g., milliamps, mg/acm, or other raw signal) using data from the
PM CPMS and the PM or HAP metals

per formance tests according to the following procedures:

1) Collect PM CPMS output data during the entire period of the performance tests. 2) Record the average hourly PM CPMS output for each test run in the three run performance

test. 3) Determine the highes t 1

- hour average PM CPMS measured during the performance test demonstrating compliance with the filterable
PM or HAP metals emissions limitations. [40 CFR s. 63.10021(a) , Table 6 to 40 CFR, Part 63, Subpart UUUUU] (iii) If using PM CPMS to measure compli ance with a parametric operating limit, the permittee shall demonstrate continuous compliance by calculating
the arithmetic 30

- boiler operating day rolling average of all of the quality assured hourly average PM CPMS output data (e.g., milliamps, PM

concen tration, raw data signal) collected for all operating hours for the previous 30 boiler operating days, excluding data recorded during periods of startup or shutdown. [40 CFR s. 63.10021(a), item 2 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (iv) If usin g quarterly performance testing to measure compliance with one or more applicable
emissions limits in condition I. C

. 15 .a ., the permitee shall demonstrate continuous compliance by calculating the results of the testing in units of the applicable emissions s tandard. [40 CFR s. 63.10021(a), item 4 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] ( 6 ) Continuous Compliance Demonstration

– Monitoring and Data
Collection: (a) The permittee shall monitor and collect data according to this
condition and the site

- spec ific monitoring plan required by 40 CFR

s. 63.10000(d).

(b) The permitee shall operate the monitoring system and collect data at all required intervals at all times that the affected EGU is operating, except for periods of monitoring system malfunctions or out

- of

control periods (see 40 CFR s. 63.8(c)(7)), and required monitoring system quality assurance or quality control activities, including, as applicable, calibration checks and required zero and span adjustments. The permittee is required to affect mon itoring system repairs in response to monitoring system malfunctions and to return the monitoring system to operation as expeditiously as practicable.

(c) The permtitee may not use data recorded during EGU startup or shutdown or monitoring system malfuncti ons or monitoring system

out

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, or required monitoring system quality assurance or control activities in calculations used to report emissi ons or operating levels. The permittee shall use all the data collected during all other periods in assessing the operation of the control device and associated control system.
(d) Except for periods of monitoring system malfunctions or monitoring system o ut

- of

- control periods, repairs associated with monitoring system malfunctions or monitoring system out

- of

- control periods, and required monitoring system quality assurance or quality control activities including, as applicable, calibration checks and requi red zero and span adjustments), failure to collect required data is a deviation from the monitoring requirements.

[40 CFR s. 63.10020

, s. 285.65(13), Wis. Stats. ]

( 7 ) Notification Requirements: (a) The permittee shall submit all of the notifications in 4 0 CFR, ss. 63.7(b) and (c), 63.8 (e), (f)(4) and (6), and 63.9 (b) through (h) that apply by the dates specified. [40 CFR ss. 63.9984(c) and 63.10030(a)]

(b) As specified in 40 CFR s. 63.9(b)(2), the permittee shall submit an
Initial Notification not later than 120 days after April 16, 2012. [40 CFR ss. 63.9984(c) and 63.10030(b)]

(c) {reserved}

(d) When required to conduct a performance test, the permittee shall submit a Notification of Intent to conduct a performance test at least 30 days before the pe rformance test is scheduled to begin. [40 CFR ss. 63.9984(c) and 63.10030(d)]

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 119

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permi ttee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance De monstration: (a) {...continued from previous page...}

(v) When conducting periodic performance

tune

- ups of your EGU(s), the permittee shall demonstrate continuous compliance by conducting periodic performance tune

- ups of the EGU(s), as specified in 40 CFR s. 63.10021(e). [40 CFR s. 63.10021(a), item 5 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (vi) When complying with work practice standards during startup the permittee shall demonstrate continuous compliance by operating
in accordance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 6 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] (vii) When complying with work practice standards during shutdown, the permittee shall demonstrate continuous compliance by operating
in acco rdance with Table 3 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10021(a), item 7 of Table 7 to 40 CFR, Part 63, Subpart UUUUU] [40 CFR s. 63.10021(a)]

(b) Except as otherwise provided in 40 CFR

s. 63.10020(c), if using a CEMS to measure SO 2 , PM, HCl , or Hg emissions, or using a sorbent trap monitoring system to measure Hg emissions, the permittee shall demonstrate continuous compliance by using all quality

- assured hourly data recorded by the CEMS (or sorbent trap monitoring system) and the other requ ired monitoring systems (e.g., flow rate, CO 2 , O 2 , or moisture systems) to calculate the arithmetic average emissions rate in units of the standard on a
continuous 30

- boiler operating day (or, if alternate emissions averaging is used for Hg, 90

- boiler

op erating day) rolling average basis, updated at the end of each new boiler operating day. Use Equation 8 to determine the 30

- (or, if applicable,
90

- ) boiler operating day rolling average.

Where:

Her i is the hourly emissions rate for hour i and n is the number of hourly emissions rate values collected over
30

- (or, if applicable, 90

- ) boiler operating days. [40 CFR s. 63.10021(b)] ( 7 ) Notification Requirements: {...continued from previous page...} (e) When required to conduct an initial compliance demonstrat ion as specified in 40 CFR s. 63.10011(a) , the permittee shall submit a Notification of Compliance Status according to 40 CFR s. 63.9(h)(2)(ii). The Notification of Compliance Status report shall contain all the following information, as applicable:

(i) A description of the affected source(s) including identification of which subcategory the source is in, the design capacity of the source, a description of the add

- on controls used on the source, description of the fuel(s) burned, including whether the fuel( s) were determined by the permittee or EPA through a petition process to be a non

- waste under 40 CFR s. 241.3, whether the fuel(s) were processed from discarded non

hazardous secondary materials within the meaning of 40 CFR s. 241.3, and justification for the selection of fuel(s) burned during the performance test. (ii) Summary of the results of all performance tests and fuel analyses and calculations conducted to demonstrate initial compliance including all established operating limits. (iii) Identificatio n of whether compliance with each applicable emission limit will be demonstrated through performance testing; fuel moisture analyses; performance testing with operating limits (e.g., use of PM CPMS); CEMS; or a sorbent trap monitoring system. (iv) Identifi cation of whether compliance will be demonstrated by emissions averaging. (v) A signed certification that all applicable emission limits and work practice standards have been met. (vi) If a deviation from any emission limit, work practice standard, or

oper ating limit occurred, submit a brief description of the deviation, the duration of the deviation, emissions point identification, and the cause of the deviation in the Notification of Compliance Status report. (vii) In addition to the information required in 40 CFR s. 63.9(h)(2), your notification of compliance status must include the following:

a) A summary of the results of the annual performance tests and documentation of any operating limits that were reestablished during this test, if applicable. If s tack tests are conducted once every 3 years consistent with 40 CFR s. 63.10006(b) , the date of the last three stack tests, a comparison of the emission level achieved in the last three stack tests to the 50 percent emission limit threshold required in 40 C FR s. 63.10006(i) , and a statement as to whether there have been any operational changes since the last stack test that
could increase emissions. b) Certifications of compliance, as applicable, signed by a responsible official stating:

1. “This EGU compli es with the requirements in 40 CFR,

s. 63.10021(a) to demonstrate continuous compliance.” and
2. “No secondary materials that are solid waste were combusted in any affected unit.” [40 CFR ss. 63.9984(c) and 63.10030(e)

, s. 285.65(13), Wis. Stats

. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 120

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED}
Nationa l Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1)
, 63.9982(d), and s. 63.9984(b)]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (c) If using a PM CPMS data to measure compliance with an operating limit in Table 4 to
S ubpart UUUUU

, The permitee shall record the PM CPMS output data for all periods when the process is operating and the PM CPMS is not out

of

- control. The permittee shall demonstrate continuous compliance by using all quality

assured ho urly average data collected by the PM CPMS for all operating hours to calculate the arithmetic average operating parameter in units of the operating limit (e.g., milliamps, PM concentration, raw data signal) on a 30 operating day rolling average basis, upd ated at the end of each new boiler operating day. Use Equation 9 to determine the 30 boiler operating day average.

Where:

Hpv i is the hourly parameter value for hour i and n is the number of valid hourly parameter values collected over 30 boiler operatin g days. [40 CFR s. 63.10021(c)]

(d) If using quarterly performance testing to demonstrate compliance with one or more applicable emissions limits in 2 to Subpart UUUUU (see I. C

. 15 .a. ), the permittee:

(i) May skip performance testing in those quarters durin g which less than 168 boiler operating hours occur, except that a performance test must be conducted at least once every calendar year. (ii) Shall conduct the performance test as defined in Table 5 to Subpart UUUUU and calculate the results of the testing in units of the applicable emissions standard; and [40 CFR s. 63.10021(d)]

{continued on next page...} ( 8 ) Reporting Requirements: (a) The permittee shall submit each report in Table 8 to 40 CFR, Part 63, Subpart UUUUU that applies. If required to (or elect ing to) continuously monitor Hg and/or HCl emissions, The permittee shall also submit the electronic reports required under Appendix A and/or Appendix B to Subpart UUUUU, at the specified frequency. [40 CFR s. 63.10031(a)]

(b) Unless the department has ap proved a different schedule for submission of reports under 40 CFR s. 63.10(a), the permittee shall submit each report semiannually and according to the following:

(i) The first compliance report shall cover the period beginning on April 16, 2015 (the comp liance date specified in 40 CFR s. 63.9984) and ending on June 30, 2015 (either June 30 or December 31, whichever date is the first date that occurs at least 180 days after the specified compliance date). (ii) The first compliance report shall be postmarke d or submitted electronically no later than July 31, 2015 (either July 31 or January 31, whichever date is the first date following the end of the first calendar half after the specified compliance date). (iii) Each subsequent compliance report shall cover the semiannual reporting period from January 1 through June 30 or the semiannual reporting period from July 1 through December 31. (iv) Each subsequent compliance report shall be postmarked or submitted electronically no later than July 31 or January 31, whichever date is the first date following the end of the semiannual reporting period. (v) The permitte may submit the semiannual compliance reports along with the reports required by condition I.XXX.1.a., instead of according to the dates in paragraphs (i ) through (iv), above. [40 CFR s. 63.10031(b), Table 8 to 40 CFR, Part 63, Subpart UUUUU]

(c) The compliance report shall contain the following information:

(i) The information required by the summary report located in 40 CFR s. 63.10(e)(3)(vi). (ii) The total fuel use by each affected source subject to an emission limit, for each calendar month within the semiannual reporting period, including, but not limited to, a description of the fuel, whether the fuel
has received a non

- waste determination by EPA or your basis for concluding that the fuel is not a waste, and the total fuel usage amount
with units of measure. (iii) An indication of whether new types of fuel were burned during the reporting period. If new types of fuel were burned, the permittee shall include the date of the performance test where that fuel was in use. (iv) The date of the most recent tune

- up for each unit subject to the requirement to conduct a performance tune

- up according to 40 CFR

s. 63.10021(e), including the date of the most recen t burner inspection if it was not done every 36 (or 48) months and was delayed until the
next scheduled unit shutdown. [40 CFR s. 63.10031(c)]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 121

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Moni toring: ( 8 ) Continuous Compliance Demonstration: {...continued from previous page...} (e) When conducting periodic performance tune

- ups of your EGU(s), as specified below, perform the first

tune

- up as part of the initial compliance
demonstration. Notwithst anding this requirement, you the permittee may delay the first burner inspection until the next scheduled unit outage provided the requirements of 40 CFR s. 63.10005 are met. Subsequently, the permittee shall perform an inspection of the burner at least on ce every 36 calendar months unless the EGU employs neural network combustion optimization during normal operations in which case the permittee shall perform an inspection of the burner and combustion controls at least once every 48 calendar months.

(i) As applicable, inspect the burner and combustion controls, and clean or replace any components of the burner or combustion controls as necessary upon initiation of the work practice program and at least once every required inspection period. Repair of a
burne r or combustion control component requiring special order parts may be scheduled as follows: a) Burner or combustion control component parts needing replacement that affect the ability to optimize NO X and CO must be installed
within 3 calendar months after the burner inspection, b) Burner or combustion control component parts that do not affect the ability to optimize
NO X and CO may be installed on a schedule determined by the operator; (ii) As applicable, inspect the flame pattern and make any adjustments to the burner or combustion controls necessary to optimize the flame pattern. The adjustment should be consistent with the manufacturer's specifications, if available, or in accordance with best combustion engineering practice for that burner type; (iii) A s applicable, observe the damper operations as a function of mill and/or cyclone loadings, cyclone and pulverizer coal feeder loadings, or other pulverizer and coal mill performance parameters, making adjustments and effecting repair to dampers, controls, mills, pulverizers, cyclones, and sensors;

{continued on next page...} ( 8 ) Reporting Requirements: {...continued from previous page...} (d) For each excess emissions occurring at an affected source where a CMS is used to comply with that emission limit or opera ting limit, the permittee shall include the information required in 40 CFR

s. 63.10(e)(3)(v) in the compliance report specified in paragraph (c), above. [40 CFR s. 63.10031(d)]

(e) The permittee shall report all deviations as defined in 40 CFR, Part 63, S ubpart UUUUU in the semiannual monitoring report required condition I.XXX.1.a. If an affected source submits a compliance report pursuant to Table 8 to to Subpart UUUUU along with, or as part of, the semiannual monitoring report required by
condition I.X XX.1.a., and the compliance report includes all required information concerning deviations from any emission limit, operating limit, or work practice requirement in this subpart, submission of the compliance report satisfies any obligation to report the sa me deviations in the semiannual monitoring report. Submission of a compliance report does not otherwise affect any obligation the affected source may have to report deviations from permit requirements to the permit authority. [40 CFR s. 63.10031(e)]

(f) A s of January 1, 2012, and within 60 days after the date of completing each performance test, the permittee shall submit the results of the performance tests required by this subpart to EPA's WebFIRE database by using the Compliance and Emissions Data Repor ting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). Performance test data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) (see http://www.epa.gov/ttn/ch ief/ert/index.html ). Only data collected using those test methods on the ERT Web site are subject to this requirement for submitting reports electronically to WebFIRE. Owners or operators who claim that some of the information being submitted for performa nce tests is confidential business information (CBI) must submit a complete ERT file including information claimed to be CBI on a compact disk or other commonly used electronic storage media (including, but not limited to, flash drives) to
EPA. The electro nic media must be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI Office, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Page Rd., Durham, NC
27703. The same ERT file with the CBI omitted shall be submitted to
EPA via CDX as described e arlier in this paragraph. The permittee shall also submit these reports, including the confidential business information, to the department in the format specified by the department. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 122

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP) : Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (e) {...continued from previous page...}

(iv) As applicable, evaluate windbox pressures and air proportions, making adjustments and effecting repair to dampers, actuators, controls, and sensors; (v) Inspect the system controlling the air

- to

- fuel ratio and ensure that it is correctly calibrated and functioning properly. Such inspection may include calibrating excess O 2 probes and/or sensors, adjusting overfire air systems, changing software parameters, and calibrating associated actuators and dampers to ensure that the systems are operated as designed. Any component out of calibration, in or near failure, or in a state that is likely to negate combustion optimization efforts prior to the next

tune

- up, should be corrected or repaired as

necessary; (vi) Optimize combustion to minimize generation of
CO and NO X . This optimization should be consistent with the manufacturer's specification s, if available, or best combustion engineering practice for the applicable burner type. NO X optimization includes burners, overfire air controls, concentric firing system improvements, neural network or combustion efficiency software, control systems
cali brations, adjusting combustion zone temperature profiles, and add

- on controls such as SCR and SNCR; CO optimization includes burners, overfire air controls, concentric firing system improvements, neural network or combustion efficiency software, control sy stems calibrations, and adjusting combustion zone temperature profiles; (vii) While operating at full load or the predominantly operated load, measure the
concentration in the effluent stream of CO and NO X in ppm, by volume, and oxygen in volume percent,
b efore and after the tune

- up adjustments are made (measurements may be either on a dry or wet basis, as long as it is the same basis before and after the adjustments are made). You may use portable CO,
NO X and O 2 monitors for this measurement. EGU's employi ng neural network optimization systems need only provide a single pre

- and post

- tune

- up value rather than continual values before and after each optimization adjustment made by the system;

{continued on next page...} ( 8 ) Reporting Requirements: (f) {...continued from previous page...} (i) Within 60 days after the date of completing each CEMS (SO 2 , PM, HCl, and Hg) performance evaluation test, as defined in 40 CFR s. 63.2 and required by Subpart UUUUU, the permittee shall
submit the relat ive accuracy test audit (RATA) data (or, for PM CEMS, RCA and RRA data) required by this subpart to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( w ww.epa.gov/cdx ). The RATA data shall be submitted in the file format generated through use of EPA's Electronic Reporting Tool (ERT) ( http://www.epa.gov/ttn/chief/ert/index.html ). Only RATA data compounds listed on the ERT Web site are subject to this

re quirement. Owners or operators who claim that some of the information being submitted for RATAs is confidential business information (CBI) shall submit a complete ERT file including information claimed to be CBI on a compact disk or other commonly used ele ctronic storage media (including, but not limited to, flash drives) by registered letter to EPA and the same
ERT file with the CBI omitted to EPA via CDX as described earlier in this paragraph. The compact disk or other commonly used electronic storage med ia shall be clearly marked as CBI and mailed to U.S. EPA/OAPQS/CORE CBI Office, Attention: WebFIRE Administrator, MD C404

- 02, 4930 Old Page Rd., Durham, NC 27703. The permittee shall also submit these RATAs to the department in the format specified by the department. The permittee shall submit calibration error testing, drift checks, and other information required in the performance evaluation as
described in 40 CFR s. 63.2 and as required in 40 CFR.

(ii) For a PM CEMS, PM CPMS, or approved alternative
moni toring using a HAP metals CEMS, within 60 days after the reporting periods ending on March 31st, June 30th, September 30th, and December 31st, the permitee submit quarterly reports to EPA's WebFIRE database by using the Compliance and Emissions Data Report ing Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). The permittee shall use the appropriate electronic reporting form in CEDRI or provide an alternate electronic file consistent with EPA's reporting
form ou tput format. For each reporting period, the quarterly reports must include all of the calculated 30

- boiler operating day rolling average values derived from the CEMS and PM CPMS. The permittee shall also submit these quarterly reports to the department in the format specified by the department.

{continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 123

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Haza rdous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirement s of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compliance Demonstration: (e) {...conti nued from previous page...}

(viii) Maintain on

- site and submit, if requested by the Administrator, an annual report containing the information in paragraphs (e)(1) through (e)(9) of this section including: a) The concentrations of CO and NO X in the effluent stream in ppm by volume, and oxygen in volume percent, measured before and after an adjustment of the EGU combustion systems; b) A description of any corrective actions taken as a part of the combustion adjustment; and c) The type(s) and amount(s) of fuel used over the 12 calendar months prior to an adjustment, but only if the unit was physically and legally capable of using more than one type of fuel during that period; and (ix) Report the dates of the initial and subsequent tune

- ups as follows: a) If the first required tune

- up is performed as part of the initial compliance demonstration, report the date of the

tune

- up in hard copy (as specified in 40 CFR s. 63.10030) and electronically (as specified in 40 CFR s. 63.10031). Report the date of each subsequen t tune

- up electronically (as specified in 40 CFR s. 63.10031). b) If the first tune

- up is not conducted as part of the initial compliance demonstration, but is postponed until the next unit outage, report the date of that tune

- up and all subsequent tune

- up s electronically, in accordance with 40
CFR s. 63.10031. [40 CFR s. 63.10021(e)]

(f) The permittee shall submit the reports required under 40 CFR s. 63.10031 and, if applicable, the reports required under Appendices A and B to Subpart UUUUU. The electronic reports required by Appendices A and B to Subpart UUUUU shall be sent to the EPA electronically, as provided in 40 CFR

s. 63.10031. CEMS data (except for PM CEMS and any approved alternative monitoring using a HAP metals CEMS) shall be submitted using EPA 's Emissions Collection and Monitoring Plan System (ECMPS) Client Tool. Other data, including PM CEMS data, HAP metals CEMS data, and CEMS performance test detail reports, shall be submitted in the file format generated through use of EPA's Electronic Repo rting Tool, the Compliance and Emissions Data Reporting Interface, or alternate electronic file format, all as provided for
under 40 CFR s. 63.10031. These reports shall also be submitted to the department. [40 CFR s. 63.10021(f)]

{continued on next page ...} ( 8 ) Reporting Requirements: (f) {...continued from previous page...} (iii) Reports for an SO 2 CEMS, a Hg CEMS or sorbent trap monitoring system, an HCl CEMS, and any supporting monitors for such systems (such as a diluent
or moistur e monitor) shall be submitted using the ECMPS Client Tool, as provided for in Appendices A and B to Subpart UUUUU and 40 CFR s. 63.10021(f). The permittee shall also submit these to the department in the format specified by the department.

(iv) Submit the compliance reports required under paragraphs (c) and (d) of this condition and the notification of compliance status required under 40 CFR

s. 63.10030(e) to EPA's WebFIRE database by using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (CDX) ( www.epa.gov/cdx ). the permittee shall use the appropriate electronic reporting form in CEDRI or provide an alternate electronic file consistent with EPA's reporting form output format. The permitte e shall also submit these compliance reports to the department in the format specified by the department.

(v) All reports required by 40 CFR, Part 63, Subpart UUUUU not subject to the requirements in paragraphs (f)(1) through (4) of this condition must be sent to the Administrator at the appropriate address listed in 40 CFR

s. 63.13. If acceptable to both the Administrator and the owner or operator of a source, these reports may be
submitted on electronic media. The Administrator retains the right to requir e submittal of reports subject to paragraphs (f)(1), (2), and (3) of this condition in paper format. The permittee shall also submit these compliance reports to the department in the format specified by the department. [40 CFR s. 63.10031(f)]

(g) If the pe rmittee had a malfunction during the reporting period, the compliance report must include the number, duration, and a brief description for each type of malfunction which occurred during the reporting period and which caused or may have caused any applicab le emission limitation to be exceeded. [40 CFR s. 63.10031(g)] [40 CFR s. 63.10031 , s. 285.65(13), Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 124

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 m mBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

T

he permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 8 ) Continuous Compl iance Demonstration: {...continued from previous page...} (g) The permittee shall report each instance in which an applicable emissions limit or operating limit in Tables 2 through 4 to Subpart UUUUU (I.A.7.a.) was not met or a required tune

- up was not conduct ed. These instances are deviations from the requirements of Subpart UUUUU. These deviations shall be reported according to 40 CFR s. 63.10031. [40 CFR s. 63.10021(g)]

(h) The permittee shall keep records as specified in
40 CFR s. 63.10032 during periods o f startup and shutdown. [40 CFR s. 63.10021(h)]

(i) The permittee shall provide reports as specified in
40 CFR s. 63.10031 concerning activities and periods of startup and shutdown. [40 CFR s. 63.10021(i)]

[40 CFR s. 63.10021 , s. 285.65(13), Wis. Stats. ]

( 9 ) Continuous Compliance Demonstration

– Emissions Averaging Provision: (a) Following the compliance date, the permittee shall demonstrate compliance with Subpart UUUUU on a continuous basis by meeting the following: (i) For each 30

- (or 90

- ) day rolli ng average period, demonstrate compliance with the average weighted emissions limit for the existing units participating in the emissions averaging option as determined in 40 CFR s. 63.10009(f) and (g); (ii) For each existing unit participating in the
emis sions averaging option that is equipped with PM CPMS, maintain the average parameter value at or below the operating limit established during the most recent performance test; (iii) For each existing unit participating in the emissions averaging option ven ting to a common stack configuration containing affected units from other subcategories, maintain the appropriate operating limit for each unit as specified in Table 4 to Subpart UUUUU that applies. (b) Any instance where the permittee fails to comply
with the continuous monitoring requirements in paragraphs (a) of this condition is a deviation. [40 CFR s. 63.10022 , s. 285.65(13), Wis. Stats. ] ( 9 ) Recordkeeping Requirements: (a) The permittee shall keep records according to the following. If required to (or electing to) continuously monitor Hg and/or HCl emissions, the permittee shall also keep the records required under Appendix A and/or Appendix B to 40 CFR, Part 63, Subpart UUUUU. (i) A copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any Initial Notification or Notification of Compliance Status or semiannual compliance report that you submitted, according to the requirements in 40 CFR s. 63.10(b)(2)(xiv). (ii) Records of perform ance stack tests, fuel analyses, or other compliance demonstrations and performance evaluations, as required in 40 CFR s. 63.10(b)(2)(viii). [40 CFR s. 63.10032(a)]

(b) For each CEMS and CPMS, the permittee shall keep records according to the following: (i ) Records described in 40 CFR s. 63.10(b)(2)(vi) through (xi). (ii) Previous ( i.e. , superseded) versions of the performance evaluation plan as required in 40 CFR s. 63.8(d)(3). (iii) Request for alternatives to relative accuracy test for CEMS as required i n 40 CFR s. 63.8(f)(6)(i). (iv) Records of the date and time that each deviation started and stopped, and whether the deviation occurred during a period of startup, shutdown, or malfunction or during another period. [40 CFR s. 63.10032(b)]

(c) The permitte e shall keep the records required in Table 7 to 40 CFR, Part 63, Subpart UUUUU including records of all monitoring data and calculated averages for applicable PM CPMS operating limits to show continuous compliance with each emission limit and operating lim it that applies to you. [40 CFR s. 63.10032(c)]

(d) For each EGU subject to an emission limit, the permittee shall also keep the following records: (i) The permittee shall keep records of monthly fuel use by each EGU, including the type(s) of fuel and amo unt(s) used. (ii) If combusting non

- hazardous secondary materials that have been determined not to be solid waste pursuant to 40 CFR 241.3(b)(1), the permittee shall keep a record which documents how the secondary material meets each of the legitimacy crit eria. If combusting a fuel that has been processed from a discarded non

hazardous secondary material pursuant to 40 CFR 241.3(b)(2), the permittee shall keep records as to how the operations that produced the fuel satisfies the definition of processing in 40 CFR 241.2. If the
fuel received a non

- waste determination pursuant to the petition process submitted under 40 CFR 241.3(c), the permittee shall keep a record which documents how the fuel satisfies the requirements of the petition process. {continued on next page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 125

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CF R, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 10 ) Establishing and Determining Compliance with a PM CPMS Operating Limit: (a) During the initial performance test or a ny such subsequent performance test that demonstrates compliance with the filterable PM, individual non

mercury HAP metals, or total non

- mercury HAP
metals limit in I. C

. 15 .a.(1) , record all hourly average output values (e.g., milliamps, stack concentration , or other raw data signal) from the PM CPMS for the periods corresponding to the test runs (e.g., nine 1

- hour average PM CPMS output values for three 3

- hour test runs). (b) Determine the operating limit as the highest 1

- hour average PM CPMS output value r ecorded during the performance test. The permittee shall verify an existing or establish a new operating limit after each repeated performance test. (c) The permittee shall operate and maintain the process and control equipment such that the 30 operating d ay average PM CPMS output does not exceed the operating limit determined in paragraphs (a) and (b) of this condition

. [40 CFR s. 63.10023

, s. 285.65(13), Wis. Stats

. ]

( 11 ) General Provisions: The permittee is subject to
the General Provisions of 40 CFR ss. 63.1 through 63.15 as shown in Table 9 to 40 CFR, Part 63, Subpart UUUUU. [40 CFR s. 63.10040

, s. 285.65(13), Wis. Stats. ]

(12) Affirmative defense for exceedence of emission limit during malfunction : In response to an action
to enforce the standard s set forth in 40 CFR s. 63.9991 the permittee may assert an affirmative defense to a claim for civil penalties for exceedances of such standards that are caused by malfunction, as defined at 40 CFR s. 63.2. Appropriate penalties may be assessed, however, if the permittee fails to meet all burden of proving all of the requirements in the
affirmative defense. The affirmative defense shall not be available for claims for injunctive relief.

{continued on next page...} ( 9 ) Recordkeeping Requirements: (d) {...continued from previous page...} (iii) For an EGU that qualifies as an LEE under 40 CFR

s. 63.10005(h), the permittee shall keep annual records that document that emissions in the previous stack test(s) continue to qualify the unit for L EE status for an applicable pollutant, and document that there was no change in source operations including fuel composition and operation of air pollution control equipment that would cause emissions of the pollutant to increase within the past year. [40 CFR s. 63.10032(d)]

(e) If electing to average emissions consistent with 40 CFR

s. 63.10009, the permittee must additionally keep a copy of the emissions averaging implementation plan required in 40 CFR

s. 63.10009(g), all calculations required under 40 CF R s. 63.10009, including daily records of heat input or steam generation, as applicable, and monitoring records consistent with 40 CFR

s. 63.10022. [40 CFR s. 63.10032(e)]

(f) The permitee shall keep records of the occurrence and duration of each startup and/or shutdown. [40 CFR s. 63.10032(f)]

(g) The permittee shall keep records of the occurrence and duration of each malfunction of an operation ( i.e. , process equipment) or the air pollution control and monitoring equipment. [40 CFR s. 63.10032(g)]

(h ) The permitee shall keep records of actions taken during periods of
malfunction to minimize emissions in accordance with 40 CFR

s. 63.10000(b), including corrective actions to restore malfunctioning process and air pollution control and monitoring equipme nt to its normal or usual manner of operation. [40 CFR s. 63.10032(h)]

(i) The permitee shall keep records of the type(s) and amount(s) of fuel used during each startup or shutdown. [40 CFR s. 63.10032(i)]

[40 CFR s. 63.10032 , s. 285.65(13), Wis. Stats. ]

( 10 ) Records (Form and Retention): (a) Records must be in a form suitable and readily available for expeditious review, according to 40 CFR s. 63.10(b)(1). (b) As specified in 40 CFR s. 63.10(b)(1), the permitee shall keep each record for 5 years follow ing the date of each occurrence, measurement, maintenance, corrective action, report, or record. (c) The permittee shall keep each record on site for at least 2 years after the date of each occurrence, measurement, maintenance, corrective action, report, o r record, according to § 63.10(b)(1). The permittee may keep the records off site for the remaining 3 years. [40 CFR s. 63.10033]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 126

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critical Pulverized Coal
Boiler R ated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generating Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (12) Affirmative defense for exceedence of emission limit during
malfunction : {continued from previous page...} (a) To establish the affirmative defense in any action to enforce such a limit, the permittee shall timely meet the notification requirements in par agraph (b) of this condition, and must prove by a preponderance of evidence that:

(i) The excess emissions:

a) Were caused by a sudden, infrequent, and unavoidable failure of air pollution control and monitoring equipment, process equipment, or a process t o operate in a normal or usual manner,
and b) Could not have been prevented through careful planning, proper design or better operation and maintenance practices; and c) Did not stem from any activity or event that could have been foreseen and avoided, or planned for; and d) Were not part of a recurring pattern indicative of inadequate design, operation, or maintenance; and (ii) Repairs were made as expeditiously as possible when the applicable emission limitations were being exceeded. Off

- shift and
overtim e labor were used, to the extent practicable to make these repairs; and (iii) The frequency, amount and duration of the excess emissions (including any bypass) were minimized to the maximum extent practicable during periods of such emissions; and (iv) If t he excess emissions resulted from a bypass of control equipment or a process, then the bypass was unavoidable to prevent loss of life, personal injury, or severe property damage;
and (v) All possible steps were taken to minimize the impact of the

excess em issions on ambient air quality, the environment and human health; and (vi) All emissions monitoring and control systems were kept in operation if at all possible, consistent with safety and good air pollution control practices; and (vii) All of the actions in response to the excess emissions were documented by properly signed, contemporaneous operating logs;
and (viii) At all times, the affected source was operated in a manner consistent with good practices for minimizing emissions; and (ix) A written root cause analysis has been prepared, the purpose of which is to determine, correct, and eliminate the primary causes of the malfunction and the excess emissions resulting from the malfunction event at issue. The analysis shall also specify, using best
monitor ing methods and engineering judgment, the amount of excess
emissions that were the result of the malfunction.

{continued on next page...} ( 11 ) Emissions Averaging to Comply with 40 CFR, Part 63, Subpart UUUUU: The permittee may use the emission averaging d escribed in 40 CFR s. 63.10009 to comply with Subpart UUUUU, if all the criteria in that section are met. [40 CFR s. 63.10009 , s. 285.65(13),
Wis. Stats. ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 127

C. Stack S04, Boiler B04, Control Device C04A, C04B, C04C, C04D

– Weston Unit 4

– Super Critica l Pulverized Coal
Boiler Rated at 5179.07 mmBtu/hr

– (CONTINUED)

Pollutant: 15 . Hazardous Air Pollutants Regulated by the Clean Air Act: {CONTINUED} National Emission Standards for HAPs (NESHAP): Coal

- and Oil

- Fired Electric Utility Steam Generati ng Units, 40 CFR, Part 63, Subpart UUUUU.

The permittee shall comply with the requirements of this section no later than April 16, 2015. [40 CFR, ss. 63.9982(a)(1), 63.9982(d), and s. 63.9984(b)] b. Compliance Demonstration: c. Test Methods, Recordkeep ing, and Monitoring: (12) Affirmative defense for exceedence of emission limit during
malfunction : {continued from previous page...} (b) Notification. When experiencing an exceedance of its emission limit(s) during a malfunction, the permittee shall notif y US EPA and the department by telephone or facsimile (FAX) transmission as soon as possible, but no later than two business days after the initial occurrence of the malfunction or, if it is not possible to determine within two business days whether the ma lfunction caused or contributed to an exceedance, no later than two business days after the permittee knew or should have known that the malfunction caused or contributed to an exceedance, but, in no event later than two business days after the end of the averaging period, if it wishes to avail itself of an affirmative defense to civil penalties for that malfunction. When seeking to assert an affirmative defense, the permittee shall also submit a written report to US EPA and the department within 45 days of the initial occurrence of the exceedance of the standard in 40 CFR s. 63.9991 to demonstrate, with all necessary supporting documentation, that it has met the requirements set forth in paragraph (a) of this condition. The permittee may seek an extension o f this deadline for up to 30 additional days by submitting a written request to US EPA and the department before the expiration of the 45 day period. Until a request for an extension has been approved by US EPA and the department, the permittee is subject to the requirement to submit such report within 45 days of the initial occurrence of the
exceedance.

[40 CFR s. 63.10001, s. 285.65(13), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 128

D. Stack S11, Combustion Turbine B11

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
395 MMBTU/hr

– Peaking Unit

– Installed 1/1969

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

a. Limitations:

(1) 0.60 pound per million Btu of heat input and 25.0 pounds per hour when firing natural gas and/or distillate fue l oil. 76 [s. NR 415.06(1)(a) Wis. Adm. Code, s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas and/or distillate
fuel oil hav ing a sulfur content of no more than 0.05% in the CT. [ss.285.65(3) and 285.65(10), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable PM/PM10 hourly emission limit by using fuel consumption records and emission factors of 0.0066 lb/MMBTU of natural gas and 0.012 lb/MMBTU of distillate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testi ng is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf draft Dry Impinger (Method 202), U.S. EPA Method 201 or 201A for PM10, or any other method approved by the Department in writing. [s. NR 439.06(1), and (1m) Wis . Adm. Code]

(2) The permittee shall retain the CT’s fuel burner design specifications to demonstrate that the burners are solely designed to burn natural gas/distillate fuel oil. [s. 285.65(3), Wis. Stats.]

76 This limit is e s tablished in the permit because the so urce was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 129

D. Stack S11, Combustion Turbine B11

– Si mple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
395 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations: (1) 40% opacity or number 2 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 40% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be c leaned nor a fire started more than 3 times per day. 77 (b) Visible emissions may exceed number 2 of the Ringlemann chart or 40% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency eq uipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.04(1), Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas or distillate fue l oil in the CT. [s. 407.09(4)(a)3.b., Wis. Adm. Code]

(2) To demonstrate compliance with the visible emission limitation in I.D.2.a.(1), the permittee shall perform U.S. EPA Method 9 visible emission testing on Stack S11 as follows: (a) Testing shall be conducted every 12 months as long as the permit remains valid. The permittee shall perform an annual Method 9 test for each fuel used in the turbine during the previous 12

- month period prior to the scheduled test date

, with the exception noted under (b). (b) The department may grant a written waiver of a scheduled test for a particular fuel, if the turbine was not operated firing that fuel, more than 360 hours in the previous 12 month period prior to the scheduled test date. ( c ) Each annual visible emis sion test shall be performed within 90 days of the anniversary date of the issuance of this permit or within 90 days of an alternate date specified by the Department in writing. [40 CFR 70.6(a)(3)(i)(B)

, s s. 285.65(3) and (13)

, Wis. Stats.

, s. NR 439.075 (4)(a)1.c., Wis.
Adm. Code ] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or any other method approved by the Department in writing. [s. NR 439.06 (9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain fuel burner design specifications to demonstrate that the burners are solely designed to burn natural gas/distillate fuel oil. [s. NR 439.04(1)(d), Wis. Adm. Code and s. 285.65(3), Wis. Stats.]

(3 ) The permittee shall retain copies of the results of the annual visible emission testing required by I.D.2.b.(2). [s. NR 439.04(1)(d), Wis. Adm. Code]

77 When combustion equipment is being cleaned or a new fire started and opacity exceeds 40%, one 6

- minute exc eedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one da y

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 130

D. Stack S11, Combustion Turbine B11

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion T urbine Rated at
395 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 3. Sulfur Dioxide (SO2)

a. Limitations:

(1) (a) 19.95 pounds per hour when firing natural gas and/or distillate fuel oil. 78 (b) The sulfur content of the fuel oil fired in B11 may no t exceed 0.05% by weight. [ss. 285.65(3) and (7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall use one of the following options to demonstrate compliance with condition I.D.3.a.(1): (a) The permittee shall take a representative sample from each batch of distillate fuel oil received and have the sample analyzed for sulfur content; (b) The permittee shall take a representative sample from the
distillate fuel oil in the fuel tank after each new shipment of oil is received, added to the tank and adequately blended with existing oil. This sample shall be analyzed for sulfur content before any oil from the refilled fuel tank is combusted; (c) The permittee shall retain copies of the fuel supplier’s sulfur content analysis for each shipment of distillate fuel oil received; or (d) The permittee shall retain copies of the fuel supplier’s sulfur content analysis of a representative sample of the batch
of distillate fuel oil from which the sh ipment was taken. [ss. NR 439.04(1)(d) and NR 439.085(4), Wis. Adm. Code]

(2) The permittee shall demonstrate compliance with the applicable SO2 hourly emission limit by using fuel consumption records and emission factors of 0.0034 lb/MMBTU for natural ga s and 0.051 lb/MMBTU for distillate fuel oil or alternative Department approved emission
factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever sulfur dioxide emission testing is required by the Department, t he permittee shall use U.S. EPA Method 6, 6A or 6C or any other method approved by the Department in writing. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall maintain the following records: (a) sulfur content of the distillate fuel oil as determ ined in condition I.D.3.b.(1); (b) the name of the oil supplier; (c) the quantity of distillate fuel oil received in each shipment; (d) operating hours of the turbine on a monthly basis; (e) amount of fuel used in the turbine on a monthly basis. [s. NR 439 .04(1)(d), Wis. Adm. Code]

78 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 131

D. Stack S11, Combustion Turbine B11

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
395 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 4. Nitrogen Oxides (NOX)

a. Limitations:

(1) 347.6 pounds per hour when firing natural gas and/or distillate fuel. 79 [ss.285.65(3) and 285.65(7), Wis. Stats.]

(2) The combustion turbine (B11) may not operate more than 455 hours per month averaged over any consecutive 12

- month period. 80 [ss. 285.63(1)(b) an d 285.65(7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate compliance with the applicable NOx hourly emission limit by using fuel consumption records and emission factors o f 0.32 lb/MMBTU of natural gas and 0.88 lb/MMBTU gallons of distillate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Nitrogen Oxides Emissions: Whenever Nitrogen oxides emission test ing is required by the Department, the permittee shall use U.S. EPA Method 7, 7E, or any other method approved by the Department in writing. [s. NR 439.06(6), Wis. Adm. Code]

(2) The permittee shall maintain monthly records of (a) the number of hours of operation of B11; and (b) the monthly fuel usage of B11 averaged over any
consecutive 12

- month period. [s. NR 439.04, Wis. Adm. Code]

D. Stack S11, Combustion Turbine B11

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
39 5 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 5. Carbon Monoxide (CO)

a. Limitations:

(1) 216.25 pounds per hour when firing natural gas and/or distillate fuel oil. [ss.285.65(3) and 285.65(7), Wis. Stats.]
b. Compliance Demonstration: c. T est Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate compliance with the applicable CO hourly emission limit by using fuel consumption records and emission factors of 0.082 lb/MMBTU for natural gas and 0.0033 lb/ MMBTU of
disti llate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever carbon monoxide emission testing is required by the Department, the permittee shall use U.S. E PA Method 10 or any other method approved by the Department in writing. [s. NR 439.06(4), Wis. Adm. Code]

79 This limit is e s tablished in the permit because t he source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

80 This limitation is necessary to ensure that the annual National Ambient Air Quality Standard for NOx is attained and maintained. Note: Air quality dispersion modeling performed for this permit took this operating hour limitation into accoun t when determining whether the annual SO2 and the annual PM10 National Ambient Air Quality Standards are attained a nd
maintained

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 132

E. Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– I nstalled 6/1973

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– Installed 6/1973

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

a. Limitations:

(1) P articulate Matter Emissions from EACH combustion turbine (B12 and B13) may not exceed: 0.10 pound per million Btu of heat input and 26.91 pounds per hour when firing natural gas and/or distillate fuel oil. 81 [s. NR 415.06(2)(c) Wis. Adm. Code, s.285.65(3) , Wis. Stats, s. 285.65(7), Wis. Stats.]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall only fire natural gas and/or distillate fuel oil having a sulfur content of no more than 0.05% in the CT. [ss.2 85.65(3) and 285.65(10), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable PM/PM10 hourly emission limit by using fuel consumption records and emission factors of 0.023 lb/MMBTU of natural gas and
0.062 lb/MMBTU of distillate fuel oil or alternative Department approved emission factors(the Department approval must be in writing). [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf draft Dry Impinger (Method 202), U.S. EPA Method 201 or 201A for PM10, or any other method approved by the Department in writing. [s. NR 439.06(1), and (1m) Wis. Adm. Code]

(2) The permittee shall retain fuel burner design specifications for each turbine to demonstrate that the burners are solely designed to burn natural gas/distillate fuel oil. [s. 285.65(3), Wis. Stats.]

81 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 133

E. Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations: (1) 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s s ions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 82 (b) Visible emissions may exceed number 1 of the Ringlem ann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code]

b. C ompliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas or distillate fuel oil in each turbine. [s. 407.09(4)(a)3.b., Wis. Adm. Code]

(2) To demonstrate compliance with the visible emission limitation in I.E.2.a.(1), the permittee shall perform U.S. EPA Method 9 visible emission testing on each of Stack S12 and
S13 as follows: (a) Testing shall be conducted every 12 months as long as the permit remains valid. The permittee shall perform an a nnual Method 9 test for each turbine, for each fuel used during the previous 12

- month period prior to the scheduled test date, with the exception noted under (b). (b) The department may grant a written waiver of a scheduled test for a particular fuel, if the turbine was not operated firing that fuel, more than 360 hours in the previous 12 month period prior to the scheduled test date. (c) Each annual visible emission test shall be performed within 90 days of the anniversary date of the issuance of this

pe rmit or within 90 days of an alternate date specified by the Department in writing. [40 CFR 70.6(a)(3)(i)(B)

, s s. 285.65(3) and (13) , Wis. Stats.

, s. NR 439.075(4)(a)1.c., Wis. Adm. Code ] (1) Reference Test Method for Visible Emissions: Whenever
visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or any other method approved by the Department in writing. [s. NR 439.06(9)(a)1, and (1m) Wis. Adm. Code]

(2) The permittee shall retain fuel burner design specific ations for each turbine to demonstrate that the burners are solely designed to burn natural gas/distillate fuel oil. [s. 285.65(3), Wis. Stats.]

(3) The permittee shall retain copies of the results of the annual visible emission testing required by I.E.2 .b.(2). [s. NR 439.04(1)(d), Wis. Adm. Code]

82 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one day.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 134

E. Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 3. Sulfur Dioxide (SO2)

a. Limitations:

(1) (a) Emissions from EACH combustion turbine (B12 and B13) may not exceed 21.92 pounds per hour when firing natural gas and/or distillate fuel oil. 83
(b) The sulfur content of the fuel oil fired in B12 and B13 may not exceed 0.05% by weight. [s. 285.65(3), Wis. Stats., and s. 285.65(7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, R ecordkeeping, and Monitoring: (1) The permittee shall use one of the following options to demonstrate compliance with condition I.E.3.a.(1): (a) The permittee shall take a representative sample from
each batch of distillate fuel oil received and have th e sample analyzed for sulfur content; (b) The permittee shall take a representative sample from the distillate fuel oil in the fuel tank after each new shipment of oil is received, added to the tank and adequately blended with existing oil. This sample s hall be analyzed for sulfur content before any oil from the refilled fuel tank is combusted; (c) The permittee shall retain copies of the fuel supplier’s sulfur content analysis for each shipment of distillate fuel oil received; or (d) The permittee shal l retain copies of the fuel supplier’s sulfur content analysis of a representative sample of the batch of distillate fuel oil from which the shipment was taken. [ss. NR 439.04(1)(d) and NR 439.085(4), Wis. Adm. Code]

(2) The permittee shall demonstrate co mpliance with the applicable SO2 hourly emission limit by using fuel consumption records and emission factors of 0.0034 lb/MMBTU for natural gas and 0.048 lb/MMBTU for distillate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever sulfur dioxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 6, 6A or 6C or any other method approved by the Department in writing. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall maintain the following records: (a) sulfur content of the distillate fuel oil as determined in condition I.E.3.b.(1); (b) the name of the oil supplier; (c) the quantity of distillate fuel oil received in each shipment; (d) operating hours of each turbine on a monthly basis; (e) amount of fuel used in each turbine on a monthly basis. [s. NR 439.04(1)(d), Wis. Adm. Code]

83 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when op erated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 135

E. Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fu el Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 4. Nitrogen Oxides (NOX)

a. Limitations:

(1) Emissions from EACH combustion turbine (B12 and B13) may not exceed 212.7 pounds per hour when firing natural gas and 411.0 pounds per hour when firing distillate fuel oil.

(2) EACH combustion turbine (B12 and B13) may not operate more than 603 hours per month averaged over any 12 consecutive month period on natural gas and 73 hours per month averaged over 12 consecutive month period on distillate fuel
oil. 84 [ss.285.63(1)(b) and 285.65(7), Wis. Stats.]
b. Compliance D emonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate compliance with the applicable NOx hourly emission limit by using fuel consumption
records and emission factors of 0.476 lb/MMBTU of natural gas
and 0.947 l b/MMBTU of
distillate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Nitrogen Oxides Emissions: Whenever nitrogen oxides emission testing is required by the Department, the permittee shall use U.S. EPA Method 7, 7E, or any other method approved by the Department in writing. [s. NR 439.06(6), Wis. Adm. Code]

(2) The permittee shall maintain the following records: (a) Records of the number of hours each turbine is operated on distillate fuel oil and/or natural gas for each day that B12 and/or B13 is operated; (b) Records of the number of hours each turbine is operated on distillate fuel oil and/or natural gas each month that B12 and/or B13 is operated; and (c) Records of the hours each t urbine is operated on distillate fuel oil and/or natural gas averaged over each 12 consecutive month period. This calculation of the 12

- month rolling operating hour total shall occur within 15 business days after the end of each

ca l endar month. [s. NR 43 9.04(1)(d), Wis. Adm. Code]

E. Stack S12, Combustion Turbine B12

– Simple Cycle Natural Gas/Distillate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Stack S13, Combustion Turbine B13

– Simple Cycle Natural Gas/Distill ate Fuel Oil Combustion Turbine Rated at
434 MMBTU/hr

– Peaking Unit

– (CONTINUED)

Pollutant: 5. Carbon Monoxide (CO)

a. Limitations:

(1) Emissions from EACH combustion turbine (B12 and B13) may not exceed 175.6 pounds per hour when firing natural ga s and/or distillate fuel oil. 85 [ss.285.65(3) and 285.65(7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall demonstrate compliance with the applicable CO hourly emission limit by using fuel consumption records and emission factors of 0.392 lb/MMBTU of natural gas and 0.043 lb/MMBTU of distillate fuel oil or alternative Department approved emission factors. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Carbon Monoxide Emission s: Whenever carbon monoxide emission testing is required by the Department, the permittee shall use U.S. EPA Method 10 or any other method approved by the Department in writing. [s. NR 439.06(4), Wis. Adm. Code]

84 This limitation is necessary to ensure that the annual National Ambient Air Quality Standard for NOx is attained and maintained. Note: Air quality dispersion modeling performed for this permit took this operating hour limitation in to account when determining whether the annual SO2 and the annual PM10 National Ambient Air Quality Standards are attained and
maintained

.

85 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determi ned that no ambient air quality standards would be violated when operated as proposed.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 136

F. 

### Stack S21, Boiler B21

– Weston Unit s 1 & 2 Auxiliary Boiler

– Natural Gas Fired Auxiliary Boiler Rated
at 6.6 MMBTU/hr

– Installed 10/1953

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

a. Limitations: (1) (a) 0.60 pound per million Btu heat input and

(b) 0.16 pound per hour. 86

[ s . NR 415.06(1)(a), Wis. Adm. Code and ss. 285.63(1)(b) and 285.65(3), Wis. Stats.]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in the boiler

. 87
[ s. NR 407.09(4)(a), Wis. Ad m. Code and s. 285.65(3), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable PM/PM10 hourly emission limit by using fuel consumption records and an emission factor of 0.0076
lbs/ mmBtu or an alternative Department approved emis sion factor. [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required, the permittee shall use US EPA Method 5, 5A, 5B, 5D, 5E, 5F, 5G, 5H, 5I or 17 including condensable backhalf emissions (U.S. EPA Method 202) or any other method approved by the Department in writing. [s. NR 439.06(1), and (1m) Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications to
demons trate that the boiler is solely designed to burn natural

gas. [s. NR 439.40(1)(d), Wis. Adm. Code and s. 285.65(3), Wis. Stats.]

86 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be v iolated when operated as proposed.

87 Because the emission limitation listed in I.F.1.a.(1)(b) is greater than the maximum theoretical emissions while firing natural

gas , limiting the type of fuel used is adequate to demonstrate compliance with the particu late matter emission limit. Maximum theoretical particulate matter emissions were calculated using an emission factor of 0.0076 pounds per mmBtu from AP

- 42, 5th edition, ch. 1.3.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 137

F. 

### Stack S21, Boiler B21

– Natural Gas Fired Auxiliary Boiler Rated at 6.6 MMBTU/hr

– (CONTINUED)

Pollutant: 2. Nitro gen Oxides Emissions (NOX)

a. Limitations:

(1) 0.96 pound per hour. 88 [ss. 285.63(1)(b) and s. 285.65(3) and (7), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural ga s in this boiler. 89 [s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.63(1)(a) and 285.65(3), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable NO

x hourly emission limit by using fuel consumption
records and an emission factor of 0.097 lbs/ mmBtu or an alternative Department approved emission factor. [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever nitrogen oxide emission testing is required, the permittee shall use U.S. EPA Method 7, 7A, 7B, 7C, 7D, or 7E or any other method approved by the Department in writing. [s. NR 439.06(6)(a), Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications
to demonstrate that the boiler is sol ely designed to burn natural gas

. [s. NR 439.04(1)(d), Wis. Adm. Code]

F. 

### Stack S21, Boiler B21

– Natural Gas Fired Auxiliary Boiler Rated at 6.6 MMBTU/hr

– (CONTINUED)

Pollutant: 3. Visible Emissions

a. Limitations: (1) 40% opacity or number 2 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 40% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 90 (b) Visible emissions may exceed number 2 of the Ringlemann chart or 40% opacity for stated periods of time, as permitted by the departmen t, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.04(1), Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1 ) The permittee shall only fire natural gas in
this boiler. 91 [s. NR 407.09(4)(a), Wis. Adm.

Code and 

### s s. 

### 285.63(1)(a) and 285.65(3), Wis. Stats.] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required, the permittee shall use U.S. EPA Method 9 or any other method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural g as

. [s. NR 439.04(1)(d), Wis. Adm. Code and s. 285.65(3), Wis. Adm. Code]

88 This limit is e s tablished in the permit because the source was reviewed w ith this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

89 Because the emission limitation listed in I.F.2.a.(1) is greater than the maximum theoretical emissions while firing natural

gas , limiting the type of fuel used is adequate to demonstrate compliance with the nitrogen oxide emission limit. Maximum theoretical nitrogen oxide emissions were calculated using an emission factor of 0.097 pounds per mmBtu from the burner vendor (Cleav er Brooks) for burner model VG

- 84

. 90 When combustion equipment is being cleaned or a new fire started and opacity exceeds 40%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restr ict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one da y.

91 It is not expected that the visible emission limitation of 40% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstrate compliance with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 138

F. 

### Stack S21, Boiler B21

– Natural Gas Fired Auxiliary Boiler Rated at 6.6 MMBTU/hr

– (CONTINUED)

Pollutant: 4. Sulfur Dioxide (SO2)

a. Limitations:

(1) (a) 0.35 pound pe r hour. 92 [s. 285.65(7), Wis. Stats., and s. 285.65(3), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. 93
[s. NR 407.09(4)(a), Wis. Adm. Code and s s. 285.63(1)(a) and 285.65(3), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable sulfur dioxide hourly emission limit by using fuel consumption records and an emission factor of 0.0017
lbs/mmBtu or an alternative Department a pproved emission factor. [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever sulfur dioxide emission testing is required, the permittee shall use U.S. EPA Method 6, 6A, 6B, 6C , or 8 or any other method approved by the Department in writing. [s. NR 439.06(2)(a), Wis. Adm. Code]

( 2 ) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural

gas. [s. NR 439.04(1)(d) , Wis. Adm. Code and s. 285.65(3), Wis. Stats.]

92 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

93 Because the emission limitation listed in I.F.3.a.(1) is greater than the maximum theoretical emissions while firing natural

gas , limiting the type of fuel used is adequate to de monstrate compliance with the sulfur dioxide emission limit. Maximum theoretical sulfur dioxide emissions were calculated using an emission factor of 0.0017 pounds per mmBtu fr om the burner vendor (Cleaver Brooks) for burner model VG

- 84

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 139

F. 

### Stack S21, Boiler B21

– Natural Gas Fired Auxiliary Boiler Rated at 6.6 MMBTU/hr

– (CONTINUED)

Pollutant: 5. Carbon Monoxide (CO)

a. Limitations:

(1) 0.24 pound per hour. 94 [s. 285.65(7), Wis. Stats., and s. 285.65(3), Wis. Stats.]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. 95
[s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.63(1)(a) and 285.65(3), Wis. Stats.]

(2) The permittee shall demonstrate compliance with the applicable CO hourly emission limit by using fuel consumption records and an emission factor of 0.036
lbs/mmBtu or an alternative Department approved emission factor. [s. NR 407.09(4)(a ), Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever carbon monoxide emission testing is required, the permittee shall use U.S. EPA Method 10 or any other method approved by the Department in wr iting. [s. NR 439.06(4)(a), Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural

gas. [s. NR 439.04(1)(d), Wis. Adm. Code and s. 285.65(3), Wis. Stats.]

94 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

95 Because the emission limitation listed in I.F.5.a.(1) is equal to the maximum theoretical emissions while firing natural gas

, limiting the type of fuel used is adequate to demonstrate compliance with the carbon monoxide emission limit. Maximum theoretical carbon monoxide emissions were calculated using an emission facto r of 0.036 pounds per mmBtu from the burner vendor (Cleaver Brooks) for burner model VG

- 84.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 140

F. 

### Sta ck S21, Boiler B21

– Natural Gas Fired Auxiliary Boiler Rated at 6.6 MMBTU/hr

– (CONTINUED)

Pollutant: 6 . Hazardous Air Pollutants Regulated by the Clean Air Act:
National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, C ommercial and Institutional Boilers and Process Heaters (40 CFR, Part 63, Subpart DDDDD)

The permittee shall comply with the requirements of this section at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier. [40 CFR s. 63.7495(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations:

(1) The permittee shall comply with the requirements of the National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, as applicable. 96 [ 40 CFR, Part 63, Subpart DDDDD , s. 285.65(13), Wis. Stats. ]

96 On March 21, 2011, an amended version of EPA’s National Emission Standard for Hazardous Air Pollutants (NESHAP) for Industrial, Commercial, and Institutional Boi lers and Process Heaters at Major Sources, was published as a final rule in the Federal Register (40 CFR Part 63, subpart DDDDD). Under the amended rule, auxilliary boiler B21 is an industrial boiler per
the definition in 40 CFR s. 63.7575. Because the b oiler was constructed prior to June 4, 2010 (B21 constructed 1953), it is considered an existing affected source, pursuant to 40 CFR s. 63.7490(d). Boiler B21 fires natural gas and is included in the boiler and process heater subcategory “units designed t o burn natural gas, refinery gas or other gas fuels ” in 40 CFR s.
63.7499 9 ( l ). As an existing affected source the permittee was required to comply with the requirements of 40 CFR Part 63, subpart DDDDD of the amended rule no later than March 21,2014, purs uant to 40 CFR s. 63.7495(b).

However, on May 16, 2011 US EPA “stayed” this amended rule and will be seeking additional public feedback and gathering more information on the final standards. The US EPA will accept additional data and information on the s tandard until July 15, 2011. This reconsideration delays the effective dates of the rule until such time as judicial review is no longer pending or until US EPA completes its reconsideration of the rules, whichever is earlier. It is uncertain at this tim e what changes will be made. Therefore specific NESHAP requirements are not included in this permit. When US EPA’s reconsideration of this NESHAP is complete or judicial review is no longer pending, whichever is earlier, the permittee will be required to comply with all applicable requirements by the established compliance dates and this operation permit will be revised to incorporate the applicable emission limitations, work practice and other requirements.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 141



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Ra ted at 46.2 mmBtu/hr

– Installed 11/2001

Pollutant: 1. Particulate Matter (PM/PM10)

a. Limitations: (1) E missions may not exceed : (a) 0.15 pound per million Btu heat input ; and (b) 0.80 pound per hour. 97
[ s. NR 415.06(2)(a), Wis. Adm. Code, ss. 285.63 (1)(b) and 285.65(3) and (7), Wis. Stats., and 04

- RV

- 128] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this aux
boiler. 98 [s. NR 407.09(4)(a), Wis. Adm. Code and ss.
285.6 5(3) and 285.63(1)(a), Wis. Stats. and 04

- RV

- 128]

(2) The permittee shall demonstrate compliance with the applicable PM/PM10 hourly emission limit by using fuel consumption records and an emission factor 3.3 lbs/mmcuft or an alternative department approved emission factor. [s. NR 407.09(4)(a), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
04

- RV

- 128] (1) Reference Test Method for Particulate Matter: Whenever particulate matter emission testing is required, the permittee shall use US EPA Method 5, 5A, 5B, 5D , 5E, 5F, 5G, 5H, 5I or 17 including condensable backhalf emissions (U.S. EPA Method 202) or any other method approved by the Department in writing. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall record and maintain records of the type and amoun t of each fuel co m busted during each calendar
month. 99 [s. NR 440.13(9), Wis. Adm. Code and 04

- RV

- 128]

(3) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural gas. [s. NR 439.04(1)(d), W is. Adm. Code. and 04

- RV

- 128]

97 This limit is e s tablished in the permit beca use the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

98 Because the emission limitation listed in I.G.1.a.(1)(b) is greater than the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the particulate matter emission limit. Maximu m theoretical particulate matter emissions were calculated using an emission factor of 3.3 pounds p er million cubic feet of natural gas fired from a stack test conducted on January 9, 2002.

99 Since the boiler will only burn natural gas, the daily record keeping requirements of s. NR 440.207(9)(g), Wis. Adm. Code, are unnecessary, because the unit is no t subject to any of the emission related requirements of the New Source Performance Standard. Thus, the daily record keeping requirements are waived per US EPA guidance and replaced with requirements to record monthly fuel useFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 142



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 2. Nitrogen Oxides Emissions (NOx)

a. Limitations: (1) 1.67 po unds per hour. 100 [ss. 285.63(1)(b) and s. 285.65(3) and (7), Wis. Stats. and 04

- RV

- 128]

(2) The permittee may not fire more than 152 million cubic feet of natural gas in the aux boiler in any 12 consecutive
months. 101 [ss. 285.65(3) and (7), Wis. Stats. an d 04

- RV

- 128]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this aux
boiler. 102 [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis. Stats. and 04

- RV

- 128]

(2) To demons trate compliance status with condition I.G.2.a.(2) the permittee shall keep the records required by I.G.2.c.(2). [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis. Stats. and 04

- RV

- 128]

(3) The permittee shall demonstrate compliance with the appli cable NO

x hourly emission limit by using fuel consumption records and an emission factor of 27.4 lbs/mmcuft or an alternative department approved
emission factor AP

- 42 emission factor. [s. NR 407.09(4)(a), Wis. Adm. Code and s. 285.65(3), Wis.
Stats. and 0 4

- RV

- 128]

(4) The permittee shall perform annual inspections of the boiler to ensure optimum performance. Items to be inspected include, but are not limited to: (a) Firebox for signs of leakage, (b) Boiler tubes for indications of fouling, (c) Water drum for corrosive/scale and metal fatigue, (d) Burner for corrosion/erosion, (e) Refractory throat and throat gasket, (f) Windbox for cleanliness and damper movement, (g) Gas supply strainer, (h) Gas pilot electrode, (i) Flame scanner. [s. NR 407.09 (1), Wis. Adm. Code, ss. 285.65(3) and (10), Wis. Stats. and 0 4

- RV

- 1 28 ] (1) Reference Test Methods for Nitrogen Oxides Emissions: Whenever nitrogen oxide emission testing is required, the permittee shall use U.S. EPA Method 7, 7A, 7B, 7C, 7D, or 7E or any other method approved by the Department in writing.[s. NR 439.06(6)(a), Wis. Adm. Code]

(2) The permittee shall maintain monthly records of the following: (a) The amount of natural gas fired in boiler B22 in mmcuft per month; (b) The total amount of natura l gas fired in boiler B22 in each 12 consecutive month period (in mmcuft). The 12

- month rolling fuel use total shall be calculated within 10 business days after the end of
each ca l endar month. [s. NR 439.04(1)(d), Wis. Adm. Code and 04

- RV

- 128]

(3) The per mittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 04

- RV

- 128]

(4) The permittee shall retain copies of the equipment m anufacturer information for the boiler. [s. NR 439.04(1)(d), Wis. Adm. Code]

(5) The permittee shall keep records of: (a) the date, time, and initials of the person(s) performing the inspections required by I.G.2.b.(4); (b) a list of the items inspected; (c) observations/descriptions for each item inspected; (d) any maintenance or repairs performed as a result of these inspections; (e) the date, time, and initials of the person(s) performing the reviews required by I.G.2.b.(5); (f) a list of the items rev iewed; (g) observations/conclusions for each item reviewed; (h) any maintenance, repairs or adjustments made as a result of the
review. [s. NR 439.04(1)(d), Wis. Adm. Code]

100 This limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

101 This restriction is established so that the NOx emissions are not subject to P SD BACT emission limits under s. NR 405.08, Wis. Adm.
Code.

102 Because the emission limitation listed in I.G.2.a.(1)(b) is greater than the maximum theoretical emissions while firing natur al gas, limiting the type of fuel used is adequate to demonstrate co mpliance with the nitrogen oxides emission limit. Maximum theoretical nitrogen oxides emissions were calculated using an emission factor of 27.4 pounds per million cubic feet of natural gas fired from a stack te st conducted on January 9, 2002.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 143



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 2. Nitrogen Oxides Emissions (NOx)

– (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (5) The permittee shall perform boiler performa nce reviews to ensure optimum performance. Each performance review shall be conducted within 90 days of when the unit combust s 152 million cubic feet of natural gas following the previous performance review. Items to be reviewed include, but are not
limi ted to: (a) Flame pattern: adjust burner as necessary to optimize the flame pattern consistent with the manufacturer’s specifications; (b) Inspect the system controlling the air

- to

- fuel ratio and ensure it is calibrated correctly; (c) Optimize total emi ssions of carbon monoxide consistent with the manufacturer’s specifications; and (d) Measure carbon monoxide concentration in the effluent stream before and after the adjustments are made. [s. NR 407.09(1), Wis. Adm. Code, ss. 285.65(3) and (10), Wis.
Sta ts. and 04

- RV

- 128 ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 144



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 3. Visible Emi s sions

a. Limitations: (1) 20% opacity or number 1 on the Ri nglemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 103 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for suc h purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permitt ee shall only fire natural gas in this aux
boiler. 104 [ s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats. and 04

- RV

- 128] (1) Whenever visible emission testing is required, the permittee shall use U.S. EPA Method 9 or any othe r method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 04

- RV

- 128]



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 4. Sulfur dioxide (SO2)

a. Limitations:

(1) 0.05 pound per hour. 105 [ss. 285.63(1)(b) and 285.65(3) and (7), Wis. Stats. and 04

- RV

- 128]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. 106 [s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats. and 04

- RV

- 128]

(2) The permittee will demonstrate compliance with the applicable sulfur dioxide hourly emission limit by using fuel consumption records and an AP

- 42 emission factor of 0.6
lbs/mmcuft or an alternative department approved emission factor. [s. 285.65(3), Wis. Stats. and 04

- RV

- 128] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever sulfur dioxide emission testing is required, the permittee shall use U.S. EPA Method 6, 6A, 6B, 6 C, or 8 or any other method approved by the Department in writing. [s. NR 439.06(2)(a), Wis. Adm. Code]

(2) The permittee shall retain boiler design specifications to demonstrate that the boiler is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 04

- RV

- 128]

103 When com bustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of f ires that may be started in any day, only the number of exemptions that are allowed in any one day.

104 It is not expected that the visible emission limitation of 20% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstrate compliance with the visible emission limitation.

105 This restrictions is established so that the sulfur dioxide emissions are not subject to PSD BACT emission limits under s. NR 405.08, Wis. Adm. Code. Additionally, this li mit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

106 Because the emission limitation listed in I.G.4.a.(1) is gr eater than the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the sulfur dioxide emission limit. Maximum theoretical sulfur dioxide emissions were calculated using an emiss ion factor of 0.6 pounds per million cubic feet of natural gas
fired from AP

- 42, 5th edition, ch. 1.4.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 145



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 5. Carbon Monoxide (CO)

a. Limitation s: (1) E missions may not exceed 1.67 pounds per hour. 107 [ss. 285.63(1)(b) and s. 285.65(3) and (7), Wis. Stats. and 04

- RV

- 128] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. 108 [s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats. and 04

- RV

- 128]

(2) The permittee shall demonstrate compliance with the applicable CO hourly emission limit by using fuel consumption records and an emissi on factor of 36.1 lbs/mmcuft or an alternative department approved emission
factor AP

- 42 emission factor. [s. 285.65(3), Wis. Stats.]
Permit # 04

- RV

- 128 ] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever carbon monoxide emission testing is required, the permittee shall use U.S. EPA Method 10 or any other method approved by the Department in writing. [s. NR 439.06(4), Wis. Adm. Code]

(2) The permittee shall retain boiler specifications to demonstrate that the boiler is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 04

- RV

- 128]

107 This restrictions is established so that the carbon monoxide emissions are not subject to PSD BACT emission limits under s. NR 405.08, Wis. Adm. Code. Additionally, this limit is e s tablished in the permit because the source was reviewed with this emission rate and it was determined that no ambient air quality standards would be violated when operated as proposed.

108 Because the emission limitation list ed in I.G.5.a.(1) is equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the carbon monoxide emission limit. Maximum
theoretical carbon monoxide emissions were calc ulated using an emission factor of 36.1 pounds per million cubic feet of natural gas fired from emission performance date supplied by the boiler manufacturer.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 146



### G. Stack S22, Boiler B22

– Weston Unit 3 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler
Rated at 46.2 mmBtu/hr

– (CONTINUED)

Pollutant: 9

. Hazardous Air Pollutants Regulated by the Clean Air Act:
National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial and Institutional Boilers
and Process Heaters (40 CFR, Part 63, Subpart DDDDD)

The permittee shal l comply with the requirements of this section at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier. [40 CFR s. 63.7495(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations:

(1) The permittee shall comply with the requirements of the National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, as applicable. 109 [ 40 CFR, Part 63, Subpart DD DDD , s. 285.65(13), Wis. Stats. ]

109 On March 21, 2011, an amended version of EPA’s National Emission Standard for Hazardous Air Po llutants (NESHAP) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, was published as a final rule in the Federal Register (40 CFR Part 63, subpart DDDDD). Under the amended rule, auxilliary boiler B22 is an indust rial boiler per the definition in 40 CFR s. 63.7575. Because the boiler was constructed prior to June 4, 2010 (B22 constructed 2001), it is considered an existing affected source, pursuant to 40 CFR s. 63.7490(d). Boiler B22 burns natural gas and is incl uded in the boiler and process heater subcategory “units designed to burn natural gas, refinery gas or other gas 1 fuels” in 40 CFR s. 63.74999(l). As existing affected source the permittee was required to comply with the requirements of 40 CFR Part 63,

s ubpart DDDDD of the amended rule no later than March 21,2014, pursuant to 40 CFR s. 63.7495(b).

However, on May 16, 2011 US EPA “stayed” this amended rule and will be seeking additional public feedback and gathering
more information on the final standards . The US EPA will accept additional data and information on the standard until July 15, 2011. This reconsideration delays the effective dates of the rule until such time as judicial review is no longer pending or until US EPA completes its reconsideratio n of the rules, whichever is earlier. It is uncertain at this time what changes will be made. Therefore specific NESHAP requirements are not included in this permit. When US EPA’s reconsideration of this NESHAP is complete or judicial review is no longe r pending, whichever is earlier, the permittee will be required to comply with all applicable requirements by the established compliance dates and this operation permit will be revised to incorporate the applicable emission limitations, work practice and o ther requirements.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 147

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– Installed 7/23/2007

Pollutant: 1. Particulate Matter (PM)

a. Limitations: (1) Emiss ions may not exceed the Best Available Control Technology (BACT) limitations of: (a) Emissions may not exceed 0.0075 pound per million Btu when firing natural gas; (b) Emissions may not exceed 1.712 pounds per hour when firing natural gas; and (c) U se of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

( 2 ) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. [s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats.]

(2) The permittee shall determine the hourly emissions using fuel consumption records and emissions factor determined by stack testing. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall perform annual inspections of the boiler to ensure opti mum performance. Items to be inspected include, but are not limited to: (a) Firebox for signs of leakage, (b) Boiler tubes for indications of fouling, (c) Water drum for corrosive/scale and metal fatigue, (d) Burner for corrosion/erosion, (e) Refract ory throat and throat gasket, (f) Windbox for cleanliness and damper movement, (g) Gas supply strainer, (h) Gas pilot electrode, (i) Flame scanner. [s. NR 407.09(1), Wis. Adm. Code, ss. 285.65(3) and (10),
Wis. Stats. and 03

- RV

- 248

- R4]

(4) The permit tee shall perform annual boiler performance reviews to ensure optimum performance. Items to be reviewed include, but are not limited to: (a) Boiler flue gas temperatures, (b) Boiler outlet steam temperatures, (c) Furnace pressure, (d) Air flow, (e) F uel flow, (f) Air preheater performance. [s. NR 407.09(1), Wis. Adm. Code, ss. 285.65(3) and (10),
Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR 60 and US EPA Method 5, including backhalf (Method 202) or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall maintain records of total a mount of fuel used as required in condition I.H.1.b.(4). [s. 439.04(1)(d), Wis. Adm. Code, ss. 285.65(3) and (10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The permittee shall retain copies of the equipment manufacturer information for the boiler. [s. NR 439.04(1)(d), Wis. Adm. Code]

(5) The permittee shall keep records of: (a) the date, time, and initials of the person(s) performing the inspections required by I.H.1.b.(3); (b) a list of the items inspected; (c) observations/descriptions for each item inspected; (d) any maintenance or repairs performed as a result of these inspections; (e) the date, time, and initials of the person(s) performing the reviews required by I.H.1.b.(4); (f) a list of the items reviewed; (g) observations/conclusions for each item reviewed; (h) any maintenance, repairs or adjustments made as a result
of the review. [s. NR 4 39.04(1)(d), Wis. Adm. Code]

(6) The permittee shall maintain the following records: (a) Daily records of fuel used by the boiler; and (b) Records of total amount of fuel used by the boiler in any
12 consecutive months. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 148

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 2. Particulate Matter Emissions less than 10 microns (PM 10 )

a. Limitations: (1) E missions may not exceed the Best Available Control Technology (BACT) limitations of: (a) Emissions may not exceed 0.0075 pound per million Btu when firing natural gas; (b) Emissions may not exceed 1.712 pounds per hour when firing natural gas; and (c) U se of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

( 2 ) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats . and 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in this boiler. [s. NR 407.09(4)(a), Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats.]

(2) The permittee shall determine the hourly emissions using fuel consumption records and emissions factor determined by stack testing. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance de monstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission testing is required, US EPA Method 5, including backhalf (Method 202) or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis . Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4) (5) and (6) shall also be used to met the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 149

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Na tural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 3. Sulfur Dioxide (SO2)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed 6.0 E

- 4 pound per million Btu when firing natural ga s; (b) Emissions may not exceed 0.14 pound per hour when firing natural gas; and (c) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using
fuel co nsumption records an emission factor of 0.6 pound per million standard cubic feet, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in this boil er. 110 [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test M ethod for Sulfur Dioxide Emissions: Whenever compliance emission testing is required, US EPA Method 6, 6A or 6C or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall keep retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requi rements of this section. [s. NR 439.04(1), Wis. Adm. Code]

110 This condition is established to meet the BACT emission limit. Because the emission limitations listed in I.H.3.a.(1) are equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the sulfur dioxide emission limit. Maximum theoretical sulfur dioxide emissions were calculated using an emission factor of 0.6 pounds per million cubic feet of natural gas fired from AP

- 42, 5th edition, ch. 1.4.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 150

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 4. Oxides of Nitrogen (NOx)

a. Li mitations: (1) Best Available Control Technology (BACT): 111
(a) Emissions may not exceed 0.10 pound per million Btu (22.9 pounds per hour) when firing natural gas; (b) Emissions may not exceed 22.9 pounds per hour when firing natural gas; and (c) The u se of good combustion practices and use of low NOx burners. [s. NR 405.08(2), Wis. Adm. Code; s. NR 440.205(5)(a), Wis. Adm. Code

, 03

- RV

- 248

- R4

, 40 CFR s. 60.44b(a) ]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standa rd cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in the boiler. 112
[ss. NR 405. 08(2) and NR 407.09(4)(a), Wis. Adm. Code
and 03

- RV

- 248

- R4]

(2) The permittee shall use
data from the continuous monitoring system required by I.H.4.c.(6) to demonstrate compliance with the emission limitations in I.H.4.a.(1). [s. NR 407.09(4)(a)1., Wis . Adm.
Code and 03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever com pliance emission testing is required, test procedures in 40 CFR 60, US EPA Method 7, 7A, 7B, 7C, 7D, or 7E or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(6), Wis. Adm. Code]

(2) The per mittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requirements of th is section. [s. NR 439.04(1), Wis. Adm. Code]

(4) The permittee shall keep manufacturer’s information that shows that low NOx burners were installed. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(5) Continuous Monitoring System Requirements : The permi ttee shall comply with the NSPS emission monitoring requirements per s. NR 440.205(9), Wis. Adm. Code as follows: (a) The permittee shall install, calibrate, maintain and operate a continuous monitoring system, and record the output of the system for me asuring nitrogen oxides emissions to the atmosphere. [s. NR 440.205(9)(b), s. 285.65(3), Wis. Stats.

, 03

- RV

- 248

- R4

, 40 CFR s. 60.48b(b) ] (b) The continuous monitoring system shall be operated and data recorded during all periods of operation of B25 excep t for continuous monitoring system breakdowns and repairs. Data shall be recorded during calibration checks, and zero and span adjustments. [s. NR 440.205(9)(c), Wis. Adm. Code

, 40 CFR s. 60.48b(c) ] (c) The 1

- hour average nitrogen oxides emission rates shall be expressed in pounds per mmBtu heat input. The 1

- hour average emission rates shall be calculated using the data points required under s. NR 440.13, Wis. Adm. Code. At least 2 data points shall be used to
calculate each 1

- hour average. [ss. NR 40 5.08(2), NR 440.205(5) (i) and NR 440.205(9)(d),
Wis. Adm. Code

, 40 CFR ss. 60.44b(i) and 60.48b(c) ] (d) The procedures under s. NR 440.13 shall be followed for install ation , evaluation, and operation of the continuous monitoring system. [s. NR 440.205( 9)(e), Wis. Adm. Code

, 40 CFR s. 60.48b(e) ] (e) The span value for nitrogen oxides is 500 ppm or the NOx span values determined according to section 2.1.2 in Appendix A to 40 CFR 75. 113 [s. NR 440.205(9)(e)2., Wis.
Adm. Code and 40 CFR 60.486(e)(2)(ii) ] {C ontinued on Next Page...}

111 The aux iliary boiler is subject to NSPS for NOx under s. NR 440.205(5)(a), Wis. Adm. Code. For a high heat release rate the NSPS limit is 0.20 lb/mmBtu. The proposed BACT limit is more restrictive then the NSPS limit for nitrogen oxides, thus the auxiliary boil er is expected to meet the NSPS limit for nitrogen oxides

. 112 This condition is established to meet the BACT emission limit.

113 See letter from Andy Seeber of DNR to Randy Oswald of WPSC dated December 5, 2007.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 151

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 4. Oxides of Nitrogen (NOx)

- (CONTINUED)
b. Compliance Demonstratio n: c. Test Methods, Recordkeeping, and Monitoring: (5) Continuous Monitoring System Requirements : {...Continued from Previous Page...} (f) When nitrogen oxides emission data are not obtained because of continuous monitoring system breakdowns, repairs, ca libration checks and zero and span adjustments, emission data will be obtained by using standby monitoring systems, Method 7 or 7A of Appendix A, 40 CFR part 60, or other approved reference methods to provide emission date for a minimum of 75% of the opera ting hours in each steam generating unit operating day, in at least 22 out of 30 successive steam generating unit operating days. [s. NR 440.205(9)(f), Wis. Adm. Code, 40 CFR s. 60.48b(f) ] (g) When calculating hourly emissions in pounds per million Btu, a minimum concentration of 5.0 percent carbon dioxide or a maximum concentration of 14.0 percent oxygen may be substituted for the measured diluent gas concentration value for any operating hour in which the hourly average carbon dioxide concentration is l ess than 5.0 percent carbon dioxide or the hourly average oxygen concentration is greater than 14.0 percent oxygen, as described in 40 CFR Part 75 Appendix F Section 3.3.4.1. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (h) The continuous emissions monit oring system shall meet the following minimum frequency operating requirements: (i) Complete a minimum of one cycle of sampling, analyzing and data recording for each
successive 15

- minute period. (ii) The values shall be averaged hourly. Hourly averag es shall be computed from 4 or more data points equally spaced over each 1 hour period, except during periods when calibration, quality assurance or maintenance activities are being performed. During these periods, a valid hour shall consist of at least 2 data points separated by a minimum
of 15 minutes. (iii) Data recorded during periods of continuous monitoring system breakdowns, repairs, calibration checks, and zero and span adjustments may not be included in the data

averages. [ss. NR 439.09(9)(b) a nd NR 440.13(5)(b) and (8), Wis. Adm. Code]

(6) Recordkeeping Requirements : The permittee shall comply with the NSPS recordkeeping requirements per s. NR 440.205(10), Wis. Adm. Code, as follows. The permittee shall maintain records of the following info rmation for each steam generating unit operating day: ( a ) Calendar date; ( b )The average hourly nitrogen oxides emission rates (expressed as NO2) (lb/mmBtu heat input) measured by the continuous monitoring system; ( c ) Identification of the steam generating unit operating hours when the 1

- hour average nitrogen oxides emission rates are in excess of the nitrogen oxides emissions limitations in I.H.4.a.(1); ( d ) Identification of the steam generating unit operating hours for which pollutant data have
not been o btained, including reasons for not obtaining sufficient data and a description of corrective actions taken; ( e ) Identification of times when emission data have been excluded from the calculation of average emission rates and the reason for excluding the da ta; ( f

) Identification of “F” factor used for calculations and the method of determination; ( g ) Identification of the times when the pollutant concentration exceeded full span of the continuous monitoring system; ( h ) Description of any modification to the continuous monitoring system that could affect the ability of the continuous monitoring system to comply with Performance Specification 2 or 3 of Appendix B, 40 CFR part 60; ( i ) Results of daily CEMS drift tests and quarterly accuracy assessments as requi red under 40 CFR part 60, Appendix F, Procedure 1 ; and (j) The amount of fuel combusted during each day. [s. NR 440.205( 10) (d) and (g) Wis. Adm. Code , 03

- RV

- 248

- R4

, 40 CFR s. 60.49b(g) ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 152

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boile r

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 4. Oxides of Nitrogen (NOx)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) Records Retention : All records re quired by I.H.4.c.(6) shall be maintained by the permittee for a period of 2 years following the date of the record. [s. NR 440.205(10)(o), Wis. Adm. Code, 40 CFR s. 60.49b(o) ]

(8) Excess Emission Reporting Requirements : The permittee shall comply with the NSPS reporting requirements per s. NR 440.205(10), Wis. Adm. Code, as follows. (a) The permittee shall submit excess emission reports to the department for any excess emissions which occurred during the reporting period. (b) Excess emissions are def ined as any calculated 1 hour average nitrogen oxides emissions rate which exceeds the emission limitations in I.H.4.a.(1). (c) The permittee shall submit reports to the department containing the information required under I.H.4.c.(6) or information requi red by the Department in writing. (d) The reporting period for the reports required under this section is each 6

- month period. (e) All reports shall be submitted to the department and shall be postmarked by the 30 th day following the end of the calendar qu arter. (f) Electronic Reports : The permittee may submit electronic quarterly reports in lieu of submitting written reports as follows: (i) The format of each quarterly electronic report shall be coordinated with the department. (ii) The electronic rep ort shall be submitted no later than 30 days after the end of the calendar quarter; (iii) The electronic report shall be accompanied by a certification statement from the permittee, indicating whether compliance with the applicable emission limitations a nd minimum data requirement was achieved during the reporting period. (iv) Before submitting reports in electronic format, the permittee shall coordinate with the department to obtain agreement to submit reports in this alternative format. [s. NR 440.20 5(10)(h), (i), (s), (t), Wis. Adm. Code

, 03

- RV

- 248

- R4 , 40 CFR ss.60.49b(h), (i), (s), (t) ]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 153

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 5. Carbon Monoxide

a. Limitations:

(1) E missions may not exceed the Best Available Control Technology (BACT) limitations of: (a) Emissions may not exceed 0.08 pound per million Btu when firing natural gas; (b) Emissions may not exceed 18.4 pounds per hour when firing natural gas; and (c) Use of good combustion practices and use of low NOx burners. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

( 2 ) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet i n any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using fuel consumption records and an emission factor of 7.42E

- 02 pound per million Btu, or other emission factor as approved in writing by the Department [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in the boiler. 114 [ ss. NR 405.08(2) and N R 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Carbon Monoxide Emi ssions: Whenever compliance emission testing is required, test procedures in 40 CFR Part 60, Appendix A, US EPA Method 10, or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(4), Wis. Adm. Co de]

(2) The permittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also
be used to met the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]

114 This condition is established to meet the BACT emission limit. Because the emission limitations listed in I.H.5.a.(1) are equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrat e compliance with the carbon monoxide emission lim it. Maximum theoretical carbon monoxide emissions were calculated using an emission factor of 0.0742 pounds per million Btu from emission performance date supplied by the boiler manufacturer.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 154

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 6. Volatile Organic Compounds (VOC)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed 5.4 E

- 3 pound per million Btu when firing natural gas; (b) Emissions may not exceed 1.24 pounds per hour when firing natural gas; and (c) Use of good combustion practices and use of low NOx burners. [s. NR 405.08, Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using fuel consumption records and an emission factor of 5.5 pound per million standard c ubic feet, or other emission factor as approved in writing by the Department [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in the boiler. 115 [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R 4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for VOC Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR Part 60, US EPA Method 25 or 18, or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(3), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications th at indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]

115 This condition is established to meet BACT emission limit. Because the emission limitations listed in I.H.6.a.(1) are equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the volatile organic compound emission limit. Maximum theoretical volatile organic compound emissions were calculated using an emission factor of 5.5 pounds per million cubic feet of natural gas fired from AP

- 42, 5th edition, ch.
1.4.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 155

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 7. Lead Emissions

a. Limitations: (1) Best Available Control Technology (BACT): (a) Em issions may not exceed 1.13 E

- 04 pound per hour when firing natural gas; and (b) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million sta ndard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using
fuel consu mption records and an emission factor of 5.0 E

- 04 pound per million standard cubic feet, or other emission factor as approved in writing by the Department [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in the b oiler. 116 [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Tes t Method for Lead Emissions: Whenever compliance emission testing is required, US EPA Method 12 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee sh all retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requirements of this secti on. [s. NR 439.04(1), Wis. Adm. Code]

116 This condition is established to meet the BACT emission limit. Because the emission limitation listed in I.H.7.a.(1) is equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the lead emission limit. Maximum theoretical lead emissions we re calculated using an emission factor of 0.0005 pounds per million cubic feet of natural gas fired from AP

- 42, 5th edition, ch. 1.4FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 156

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 8. Mercury Emissions

a. Limitations: (1) E missions m ay not exceed the Best Available Control Technology (BACT) limitations of: (a) Emissions may not exceed 5.9 E

- 5 pound per hour when firing natural gas; and (b) Use of good combustion practices and firing clean fuel (natural gas). [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

( 2 ) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using fuel consumption records and an emission factor of 2.6 E

- 04 pound per million standard cubic feet, or other emission factor as approved in writing by th e Department.[s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in the boiler. 117 [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Mercury Emissions: Whenever compliance emission testing is required, US EPA Method 29 or an alternative method approved in writin g by the department shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 24 8

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]

117 This condition is established to meet the BACT emission limit. Because the emission limitation listed in I.H.8.a.(1) is equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the mercury emission limit. Maximum theoretical mercury emissions were calculated using an emission factor
of 2 .6 E

- 4 pounds per million cubic feet of natural gas fired from AP

- 42, 5th edition, ch. 1.4FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 157

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxilia ry Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 9. Emissions of Fluorides

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed 2.7 E

- 4 pound per million Btu (6.2 E

- 2 pound per hour) when firing nat ural gas; and (b) Use of good combustion practices and firing clean fuel (natural gas). [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 c onsecutive months. [s. NR 405.08(2), Wis. Adm. Code; ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using
fuel co nsumption records and an emission factor of 0.275 pound per million standard cubic feet, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall only fire natural gas in the boiler. 118 [ss. NR 405.08(2) and NR 407.09(4)(a) Wis. Adm. Code and
03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b.(3) and (4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Te st Method for Emissions of Fluorides: Whenever compliance emission testing is required, US EPA Method 13B or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The per mittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2), (4), (5) and (6) shall also be used to met the requirements of t his section. [s. NR 439.04(1), Wis. Adm. Code]

118 This condition is established to meet the BACT emission limit.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 158

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 10. Visible Emissions

a. Limitations: (1) 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 119 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as per mitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [ss. NR 405.08(2) and NR 431.05, Wis. Adm. Code and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in the boiler. 120 [ss. NR 405.08(2) and NR 407.09(4)(a), Wis. Adm. Code and
03

- RV

- 248

- R4] (1) Reference Test Method for Visible Emissions: Whenever compliance emission testing is required, US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that
indi cate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

119 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in a ny one day.

120 This condition is established to meet BACT emission limit. It is not expected that the visible emission limitation of 20% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstr ate compliance with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 159

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutan t: 11. Sulfuric Acid Mist (H2SO4)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed 2.1 E

- 2 pound per hour when firing natural gas; and (b) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Cod e and 03

- RV

- 248

- R4]

(2) Total natural gas combusted by the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods , Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in the boiler. 121 [ss. NR 405.08(2) NR 407.09(4)(a) Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall determine the hourly emissions using fuel consumption records, an d an emission factor of 0.06 pound per million standard cubic feet, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.H.1.b. (4) shall also be used as compliance demonst ration requirements for this section. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code] (1) Reference Test Method for Sulfur Acid Mist Emissions: Whenever compliance emission testing is required, US EPA Method 8 or an alternate method approved in writing by the
D epartment, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the boiler’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.H.1.c.(2) shall also be used to met the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]

121 This condition is established to meet BACT emission limit.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 160

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmB tu/hr

– (CONTINUED)

Pollutant: 1 2 . Hazardous air pollutants regulated under sec. 112 of the Clean Air Act.

a. Limitations: (1) 400 ppm Carbon Monoxide by volume on a dry basis corrected to 3% O 2, based on a 30

- day rolling average, excluding periods of monitoring malfunctions, associated repairs, out

- of

- control periods, required QA/QC activities, or when the boiler is operating at less than 50% of its rated capacity. 122 [s. 285.65(13), Wis. Stats. and 03

- RV

- 248

- R4]

(2) Total natural gas combusted b y the auxiliary boiler may not exceed 450 million standard cubic feet in any 12 consecutive months. [s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4]

The permittee shall comply with the requirements of this section until such time as judicial review is no long er pending or US EPA completes its reconsideration of the National Emission Standards for Hazardous Air Pollutants for Industrial, Commercial and Institutional Boilers and Process Heaters at Major Sources (40 CFR, Part 63, Subpart DDDDD), whichever is ear lier. The permitte shall comply with the requirements of section I.H.13., in lieu of this section, at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier. [40 CFR s. 63.7495(b)]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall operate and maintain a continuous emission monitoring system (CEMS) for carbon monoxide according to the following procedures: (a) each CEMS shall be op erated, and maintained according to Performance Specification (PS) 4A of 40 CFR part 60, appendix B; (b) the permittee shall conduct a performance evaluation of each CEMS according to the requirements in §63.8 and according to PS 4A of 40 CFR part 60, app endix B; (c) the CEMS must complete a minimum of one cycle of operation (sampling, analyzing, and data recording)
for each successive 15

- minute period; (d) the CEMs data must be reduced as specified in §63.8(g)(2); (e) the permittee shall calculate and rec ord a 30

- day rolling average emission rate on a daily basis; (f) the permittee shall not use data recorded during periods of monitoring malfunctions, associated repairs,

out

- of

- control periods, required QA/QC activities , or when the boiler is operating at less than 50% of its rated capacity in the calculation for condition
I.H.12. b.(1)(e). Periods for which the monitoring system is out of control and data are not available for required calculations, constitutes a deviation from the monitoring requirements

. [ s. 285.65(13), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for organic HAPs Emissions; inorganic solid HAPs, and inorganic acid HAPs: Whenever compliance emission testing is required a method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall maintain the following records: (a) Daily records of the amount of fuel used in the boiler; (b) Records of total amount of fuel used in the boiler in any 12

cons ecutive months. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall report each instance in which the emission
limit in H.1 4 .a.(1) was not met. This includes reporting instances during startup, shutdown, or malfunction when the applicab le
emission limit was not met. These instances are deviations from the emission limits and work practice standards. [s. 285.65(13), Wis.
Stats. and 03

- RV

- 248

- R4]

(4) The administrator will determine whether deviations that occur during a period of sta rtup, shutdown, or malfunction are violations according to the provisions in § 63.6(e). [s. 285.65(13), Wis. Stats.
and 03

- RV

- 248

- R4]

(5) The permittee shall submit a Notification of Intent to conduct a performance test or evaluation at least 30 days be fore the performance test is scheduled to begin. [s. 285.65(13), Wis. Stats.
and 03

- RV

- 248

- R4]

(6) The permittee shall submit a Notification of Compliance Status including all performance evaluation results before the close of business on the 60th day fo llowing the completion of the performance evaluation required under I.H.12. b.(1)(b). [s. 285.65(13), Wis. Stats. and 03

- RV

- 24

- R4]

122 These case

- by

- case boiler MACT requirements were established in construction permit 03

- RV

- 248. These case

- by

- case boiler MACT requirement s are identical to the MACT for Industrial, Commercial and Institutional Boilers that was signed June 24, 2004 and later vacated. Removal of the vacated MACT requirements could result in an increase in emissions that may require a construction permit.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 161

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mm Btu/hr

– (CONTINUED)

Pollutant: 1 2 . Hazardous air pollutants regulated under sec. 112 of the Clean Air Act.

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (7) The semiannual compliance reports required by I.XXX.1.a.(1) shall contain the following information as related to hazardous air pollutant emissions from boiler B25: (a) Company name and address; (b) Statement by responsible official certifying the truth, accuracy, and completeness of the report content; (c) Date of report and beginning and ending dates of the reporting period; (d) Type and amount of the total fuel usage; (e) a summary of the results of performance tests and documentation of any operating limits that were reestablished during t his test, if applicable; (f) a signed statement indicating that you burned no new types of fuel; (g) whether there were any startup, shutdown, or malfunction periods during the reporting period and whether the actions taken were consistent with your SSMP . If there were startup, shutdown, or malfunctions, the compliance report must include the information in §63.10(d)(5)(i); (h) If there were no deviations from any emission limits, operating limits, or work practice standards during the reporting period, a statement that to that affect shall be included in the report; (i) If there were no periods during which the CEM was out of control as specified in §63.8(c)(7) during the reporting period, a statement that to that affect shall be included in the report

. [s. 285.65(13), Wis. Stats. and 03RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 162

H. Stack S25, Boiler B25

– Weston Unit 4 Auxiliary Heating Boiler

– Natural Gas Fired Auxiliary Boiler Rated at
229.8 mmBtu/hr

– (CONTINUED)

Pollutant: 1 3

. Hazardous Air Pollutants Regulated by the Clean Air Act:
National Emission Standards for Hazardous Air Pollutants for Majors Sources: Industrial, Commercial and Institutional
Boilers and Process Heaters (40 CFR, Part 63, Subpart DDDDD)

The permittee shall comply with the requirements of this s ection at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier. [40 CFR s. 63.7495(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations: (1) The permittee shall comply with the requirem ents of the National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, as applicable. 123 [ 40 CFR, Part 63, Subpart DDDDD , s. 285.65(13), Wis. Stats. ]

123 On March 21, 2011, an amended version of EPA’s National Emission Standard for Hazardous Air Pollutants (NESHAP) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, was published as a final rule in the Federal Registe r (40 CFR Part 63, subpart DDDDD). Under the amended rule, auxilliary boiler B25 is an industrial boiler per the definition in 40 CFR s. 63.7575. Because the boiler was constructed prior to June 4, 2010 (B25 constructed 2007), it is
considered an existin g affected source, pursuant to 40 CFR s. 63.7490(d). Boiler B25 burns natural gas and is included in the boiler and process heater subcategory “units designed to burn natural gas, refinery gas or other gas 1 fuels” in 40 CFR s. 63.74999(l). As an existin g affected source the permittee was required to comply with the requirements of 40 CFR Part 63, subpart DDDDD of the amended rule no later than March 21,2014, pursuant to 40 CFR s. 63.7495(b).

However, on May 16, 2011 US EPA “stayed” this amended rule and will be seeking additional public feedback and gathering more information on the final standards. The US EPA will accept additional data and information on the standard until July 1 5, 2011. This reconsideration delays the effective dates of the rule unt il such time as judicial review is no longer pending or until US EPA completes its reconsideration of the rules, whichever is earlier. It is uncertain at this time what changes will be m ade. Therefore specific NESHAP requirements are not included in this permit. When US EPA’s reconsideration of this NESHAP is complete or judicial review is no longer pending, whichever is earlier, the permittee will be required to comply with all applicable requirements by the established compliance dates and this operati on permit will be revised to incorporate the applicable emission limitations, work practice and other requirements. Until the requirements of the NESHAP for industrial, commercial, and institutional boilers and process heaters at major source become affec tive, the permittee shall comply with the

case

- by

- case MACT requirements for hazardous air pollutants regulated by the Clean Air Act established in construction permit
03

- RV

- 248

- R3 and included in section I.H.12. of this permit.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 163

I . Stacks S11AL (lower) and S11AU (upper), Process B11A

– B11

– Diesel Startup Engine with Dual Exhaust

– Rated at 5.8 mmBtu/hr (825 hp)

– Installed 1/1969

Stack S11B, Process B11B

- B11

– Emergency Black Start Diesel Engine

– Rated at 3.0 mmBtu/hr (435 hp )

– Installed 1/1969

Stack S60, Process B60

– Weston Unit 3 Diesel Fire Pump Engine

– Rated at 2.6 mmBtu/hr (380 hp)

– Installed prior to 4/1981

Pollutant: 1. Particulate Matter Emissions (PM) or Particulate Matter Emissions less than 10 microns (PM 10 )

a. Limitations: (1) Emissions may not exceed the most restrictive of: (a) 0.50 pounds per mmBtu heat input; or (b) (i) 0.40 pounds PM per hour for B11A, (ii) 0.33 pounds PM10 per hour for B11A, (ii) 0.71 pounds PM or PM10 per hour for B11B, (iii) 0.44 pounds PM or PM10 per hour for B60. 124
[s. NR 485.055, Wis. Adm. Code and s. 285.63(1)(b), Wis. Adm. Code]

(2) Each engine shall meet the following operating hour restrictions: (a) Engine B11A may not be operated more than 100 hours averaged over each 12 consecutive month period. 125
(b) Engine B11B may not be operating more than 200 hours averaged over each 12 consecutive month period. 126
(c) Engine B60 may not be operated more than 200 hours averaged over each 12 consecutive month period. 127

[s. 285.63(1)(b), Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire low sulfur content distillate fuel oil, with a sulfur content not greater than 0.05 percent by weight, in eac h of the engines. 128 [ss. NR 407.09(1)(c)1.b., Wis. Adm. Code and 285.65(3) and 285.63(1)(a), Wis. Stats.]

(2) To demonstrate compliance with I.I.1.a.(2) the permittee shall maintain the records required by I.I.1.c.(3). [s. NR 407.09(1)(c)1.b., Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf (Method 202) or any o ther method approved by the Department in writing. [s. NR 439.06(1), and (1m) Wis. Adm. Code]

124 The more restrictive emi ssion limitations in I.I.1.a.(1)(b) are necessary to en sure that the NAAQSs are protected. The limitations of 0.40 pounds PM per hour and 0.33 pounds PM10 per hour for B11A are equivalent to the maximum theoretical
emissions based on emission factors of 0 .0697 pounds PM per mmBtu heat input and 0.0573 pounds PM10 per mmBtu heat input from AP

- 42 section 3.4. The limitation of 0.71 pounds per hour for B11B is equivalent to the maximum theoretical emissions based on an emission factor of 0.74 g/hp

- hr from CA RB database. The limitation of 0.44 pounds per hour for B60 is equivalent to the maximum theoretical emissions based on an emission factor of 0.53 g/hp

- hr from CARB database.

125 The operating hour restriction is necessary to ensure that the annual NAAQSs a re protected. This operating hour restriction was taken into account when modeling emissions of PM10, SO2, and NOx. Because the operating hours of B11A are restricted to less than 100 hours per year, this engine is considered a “limited use stationary RI CE”, pursuant to 40 CFR, s.
63.6675.

126 The operating hour restriction is necessary to ensure that the annual NAAQSs are protected. This operating hour restriction was taken into account when modeling emissions of PM10, SO2, and NOx.

127 Ibid. (Same a s previous footnote.)

128 Because the emission limitations listed in I.I.1.a.(1)(b) are equal to the maximum theoretical emissions while firing distillate fuel oil, limiting the type of fuel used is adequate to demonstrate compliance with the particulate m atter emission limit. Maximum theoretical particulate matter emissions were calculated using the emission factors referenced in footnote
1 22.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 164

I. Stacks S11AL (lower) and S11AU (upper), Process B11A

– B11

– Diesel Startup Engine with Dual Exhaust

– Rated at 5.8 mmBtu/hr (825 hp)

– Installed 1/1969

Stack S11B, Process B11B

- B11

– Emergency Black Start Diesel Engine

– Rated at 3.0 mmBtu/hr (435 hp)

– Installed 1/1969

Stack S60, Process B60

– Weston Unit 3 Diesel Fire Pump Engine

– Rated at 2.6 mmBtu/hr (380 hp)

– Installed prior to 4/1981

Pollutant: 1. Particulate Matter Emissions (PM) or Particulate Matter Emissions less than 10 microns (PM 10 )

- {CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (3) The compliance demonstration methods of
condition I.D.3 .b.(1) shall also be used as to demonstrate compliance with the distillate fuel oil sulfur content limitation in I.I.1.b.(1) [s. NR 407.09(4)(a), Wis. Adm. Code] (2) The permittee shall retain plans and specifications that indicate each engine’s fuel usa ge design capabilities. 129 [s. NR 439.04(1)(d), Wis. Adm. Code]

(3) The permittee shall maintain monthly records of: (a) The number of hours of operation for EACH engine; and (b) The monthly hours of operation of EACH engine averaged over each
12 consec utive month period. [s. NR 439.04(1)(d), Wis. Adm. Code]

(4) The requirements of I.D.3.c.(2) shall also be used to meet the recordkeeping requirements to demonstrate compliance with the distillate fuel oil sulfur content limitation in I.I.1.b.(1). [s. NR 439.04(1), Wis. Adm. Code]

129 These plans and specifications are sufficient because each engine is designed to only burn distillate fuel oil

.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 165

I. Stacks S11AL (lower) and S11AU (upper), Process B11A

– B11

– Diesel Startup Engine

- (CONTINUED)

Stack S11B, Process B11B

- B11

– Emergency Black Start Diesel Engine

- (CONTINUED)

Stack S60, Process B60

– Weston Unit 3 Diesel Fire Pump Engine

- (CONTINUED)

Pollutant: 2 . Visible Emissions (VEs)

a. Limitations: (1) Visible emissions from B11A and B11B may not exceed 40% opacity or number 2 on the Ringlemann chart, with the following exceptions: (a) Visible emiss ions may exceed 40% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a f ire started more than 3 times per day. 130 (b) Visible emissions may exceed number 2 of the Ringlemann chart or 40% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or oth er good cause, provided no hazard
or unsafe condition arises. [s. NR 431.04(1), Wis. Adm. Code]

(2) Visible emissions from B60 may not exceed 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exc eed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 131 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good caus e, provided no hazard
or unsafe condition arises. [s. NR 431.05, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire low sulfur content distillate fuel oil, with a sulfur con tent not greater than 0.05 percent by weight, in each of the engines. 132 [s. NR 407.09(4), Wis. Adm. Code and s. 285.65(3), Wis. Stats.]

(2) The compliance demonstration methods of condition I.D.3.b.(1) shall also be used as to demonstrate compliance
with the distillate fuel oil sulfur content limitation in I.I.2.b.(1) [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Metho d 9 or any other method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain fuel burner design specifications to demonstrate that each engine is solely designed to burn distillate fuel oil. [s. 285. 65(3), Wis. Stats.]

(3) The requirements of I.D.3.c.(2) shall also be used to meet the recordkeeping requirements to demonstrate compliance
with the distillate fuel oil sulfur content limitation in I.I.2.b.(1). [s. NR 439.04(1), Wis. Adm. Code]

130 When combustion equipment is being cleaned or a new fire started and opacity exceeds 40%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or th e number of fires that may be started in any day, only the number of exemptions that are allowed in any one day.

131 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, bu t no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one da y.

132 It is not expected that the vi sible emission limitations of 20% and 40% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstrate compliance with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 166

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– Installed
9/20/2007

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– Installed
12/19/2006

Pollutant: 1. P articulate Matter Emissions (PM) or Particulate Matter Emissions less than 10 microns (PM 10 )
a. Limitations: (1) Best Available Control Technology (BACT): 133
(a) Emissions from B27 may not exceed 0.42 pound per hour; (b) Emissions from B28 may not excee d 0. 89 pounds per hour ; (c) Use of distillate fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Emissions from B28 may not exceed 0.50 pounds per h our. 134 [s. 285.65(7), Wis. Stats., s. NR 404.08, Wis. Adm. Code]

( 3 ) Hour of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4]

b . Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire distillate fuel oil with a maximum sulfur content of 0.003% by weight, in each of the engines. [ss. NR 407.09(1)(c)1.b., Wis. Adm. Code and 285.65(3) and 285.63(1)(a), Wis. Stats.]

(2) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption and certified test data as required by 40 CFR Part 60. [s. 285.65(3), Wis. Stats. and 03

- RV

248

- R4]

(3) The per mittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The permittee shall perform (a) Inspections of each engine to ensure optimum performance every 12 months. Items to be inspected include, but are not limited to: (i) General condition of the engine, (ii) Air filter, (iii) Coolant level, (iii) Oil (replace/filter/oil level) (b) Inspections of each engine every 24 months. Items to be inspected include, but are not limited to: (i) Valve Lash, (ii) Crankcase Breather, (iii) Fuel system primary and secondary filters, (c) Inspections of each engines’ fuel injection nozzles every 48
months. [s. NR 407.09(1), Wis. Adm. Code, ss. 285.65(3) and (10), Wis.
Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter
Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR 60 and US EPA Method 5, including backhalf (Method 202 ) or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation for each of B27 and B28, to demonstrate compliance wit h condition I.J.1.a.( 3 ). [ss. 285.65(3) and (10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and
03

- RV

- 248

- R 4]

(4) The permittee shall retain copies of the equipment manufacturer information for each engine. [s. NR 439.04(1)(d), Wis. Adm. Code]

(5) The permittee shall keep records of: (a) the date, time, and initials of the person(s) performing the inspectio ns required by I.J.1.b.(4); (b) a list of the items inspected; (c) observations/descriptions for each item inspected; (d) any maintenance, repairs or adjustments performed as a result of these inspections. [s. NR 439.04(1)(d), Wis. Adm. Code]

133 The pound per hour BACT emission limitat ions also ensure that the NAAQSs are protected. The limitations in I.J.1.a.(1)(a) and (b) are equivalent to the maximum theoretical emissions based on an emission factor of 0.31 pounds per mmBtu heat input from AP

- 42 section 3.3.

134 The permittee elected an emission limitation of 0.50 pounds per hour, which is more stringent than the BACT limitation of 0.89 pounds per hour established in construction permit 03

- RV

- 248

- R4. The more stringent limitation was used in dispersion modeling to demonstrate that the NAAQSs will be attained and maintained. The decrease in the emission rate is not a modification and is not subject to construction permit requirements pursuant to chs. NR 405, 406 and 408, Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 167

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

a . Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 0.39 pound per hour; (b) Emissions from B28 may not exceed 0.83 pounds per hour; (c) Use of distillate fuel oil having a maximum sulfur content of 0.0 03% by weight; and (d) Use of good combustion practices. (BACT) [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records, fuel sulfu r content and an emission factor of 0.29 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall fire distillate fuel oil having a maximum sulfur cont ent of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) Compliance with I.J.1.b.(4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code]

(4) The permittee shall use one of the following options to demonstrate compliance with condition I.J.2.a.(1)(c): (a) A representative sample shall be taken from each fuel lot of fuel oil received. The sample shall be anal yzed by the permittee for the sulfur content by weight using procedures outline in s. NR 439.08(2), Wis. Adm. Code and the analysis shall be retained by the permittee for a period of at least five years. (b) The Department will accept, in lieu of an analy sis on each fuel lot under (a) above, an analysis of a representative sample of the fuel lot of distillate fuel oil from which the
fuel lot was taken. [ ss. NR 439.04(1)(d) and NR 439.085(4), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4]

(5) The permittee shall retain copies of its distillate fuel oil supplier’s fuel sulfur and heat content analyses at the facility for each fuel lot of distillate fuel oil received pursuant to 40 CFR 60.334 for a period of five years.

(6) The permittee sha ll further obtain certification from the fuel supplier that the applicable methods in s. NR 439.08(2), Wis. Adm. Code, were followed, if applicable, by the supplier in the preparation of said sulfur and heat content analyses. The fuel lot’s quantity of fu el oil shall be included with the copies of these analyses. [ ss. NR 439.04(1)(d) and NR 439.085(4), Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4] (1) Reference Test Method for
Sulfur Dioxide Emissions: Whenever compliance emission testing is required, US EPA Method 6, 6A or 6C or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation of each
of B27 and B28, to demonstrate compliance with condition I.J.2.a.(2). [ss. 285.65(3) and (10),
Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)( d),
Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The requirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]

(5) The permittee shall maintain records required under condition I.J.2.b.(4 )

– (6). [s. NR 439.04(1)(d), Wis. Adm. Code and
03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 168

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 3 . Oxides of Nitrogen (NOx)

a. Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 5.96 pounds per hour (0.60 tpy); (b) Emissions from B28 may not exceed 12.66 pounds per hour (1.27 tpy); (c) Use of distillate fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices and ignition timing retard. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of o peration may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions of each of B27 and B28 using fuel consumption records and an emission factor of 4.41 pounds per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis. Sta ts.]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm. Code]

(3) Compliance with I.J.1.b.(4) shall also be used as complianc e demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code and 03

- RV

- 248

- R4] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR 60, US EPA Method 7 or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(6), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation for each of B27 and B28, to demonstrate compliance with

c ondition I.J.3.a.(2). [s. 285.65(10), Wis. Stats.; s. 285.65(3), Wis. Stats.]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code]

(4) The requi rements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 169

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S 28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 4 . Carbon Monoxide (CO)

a. Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 1.28 pounds per hour; (b) Emissions from B28 may not exceed 2.73 pounds per hour; (c) Use of fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of op eration may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records and an emission factor of 0.95 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis. Sta ts. and 03RV

- 248

- R4]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) Compliance with I.J.1.b.(4 ) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever compliance emission testing is required, US EPA Method 10, or an alterna te method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(4), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation for each of B27 and B28, to demonstrate compliance with
condition I.J. 4.a.(2). [ss. 285.65(3) and (10), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities for each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The re quirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 170

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stac k S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 5 . Volatile Organic Compounds (VOC)

a. Limitations:

(1) Best Available Control Technology: (a) Emissions from B27 may not exceed 0.4 7 pound per hour; (b) Emissions from B28 may not exceed 1.00 pounds per hour; (c) Use of fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08, Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitori ng: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records and an emission factor of 0.35 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis . Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight . [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) Compliance with I.J.1.b.(4) shall also be used as compliance demonstration req uirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for VOC Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR Part 60, Appendix A, US EPA Method 25 or 18, or an
alternate method a pproved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(3), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation for each of B27 and B28, to demonstrate compliance with condition I.J.5.a.(2). [ ss. 285.65(3) and (10), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The requirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 171

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S28, Proce ss B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 6 . Lead Emissions

a. Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 1.22 E

- 05 pound per hour; (b) Emissions from B28 may not exceed 2.58 E

- 05 pounds per hour; (c) The use of fuel oil having a maximum sulfur content of 0.003% by weight; and (d) The use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records and an
emission factor of 9.0 E

- 06 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wi s. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) Compliance with I.J .1.b.(4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Lead Emissions: Whenever compliance emission testing is required, US EPA Method 12
or an alternate me thod approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(5), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation of each of B27 and B28, to demonstrate compliance with condition I.J.6.a.( 2). [s. 285.65(10), Wis. Stats.; s. 285.65(3),
Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities for each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(4) The requirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 172

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CON TINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 7 . Mercury Emissions

a. Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 4.06 E

- 06 pound per hour; (b) Emissions from B28 may not exceed 8.61 E

- 06 pounds per hour; (c) Use of fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeepi ng, and Monitoring: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records and an
emission factor of 3.0 E

- 06 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) Compliance with I.J.1.b.(4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Mercury Emissions: Whenever compliance emission testing is required, US EPA
Metho d 29 or an alternative method approved in writing by the department shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation of each of B27 and B28, to demonstrate compliance with condition I.J.7.a.(2). [ss. 285.65(3) and (10), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 2 48

- R4]

(4) The requirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 173

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 8 . Emissions of Fluorides

a. Limitations:

(1) Best Available Control Technology (BACT): (a) Emissions from B27 may not exceed 3.66 E

- 04 pound per hour; (b) Emissions from B28 may not exceed 7.76 E

- 04 pounds per hour; (c) Use of fuel oil having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code a nd 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 hours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods , Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records and an
emission factor of 3.73 E

- 05 pound per gallon, or other emission factor as approved in writing by the De partment. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4 ]

(3) Compliance with I.J.1.b.(4) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Emissions of Fluorides: Whenever compliance emission testing is required, US EPA Method 13B or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation for each of B27 and B28, to demonstra te compliance with condition I.J.8.a.(2). [ss. 285.65(3) and (10), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Cod e and 03

- RV

- 248

- R4]

(4) The requirements of I.J.1.c.(4) and (5) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 174

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu /hr (200 hp)

– (CONTINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CONTINUED)

Pollutant: 9 . Visible Emissions

a. Limitations: (1) 20% opacity or number 1 on the Ringlemann chart, with the fol lowing exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 135 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating te st, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises. [ss. NR 405.08(2) and NR 431.05, Wis. Adm. Code and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight. This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(2) The permittee shall only fire ultra low sulfur content
d istillate fuel oil in each of the engines. 136 [s. NR 407.09(4), Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Visible Emissions: Whenever compliance emission testing is required, US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

135 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, o nly the number of exemptions that are allowed in any one day.

136 It is not expected that the visible emission limitation of 20% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstrate complia nce with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 175

J. Stack S27, Process B27

– Weston Unit 4 Diesel Booster Pump Engine

– Rated at 1.4 mmBtu/hr (200 hp)

– (CONTINUED)

Stack S28, Process B28

– Weston Unit 4 Main Booster Pump Engine

– Rated at 3 mmBtu/hr (430 hp)

– (CO NTINUED)

Pollutant: 10. Sulfuric Acid Mist (H2SO4)

a. Limitations:

(1) Best Available Control Technology: (a) Emissions from B27 may not exceed 6.01E

- 02 pound per hour; (b) Emissions from B28 may not exceed 0.127 pounds per hour; (c) Use of fuel o il having a maximum sulfur content of 0.003% by weight; and (d) Use of good combustion practices. [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) Hours of operation may not exceed the following in any 12 consecutive month period: (a) B27: 200 h ours; and (b) B28: 200 hours. [ss. 285.65(3) and (7), Wis. Stats. and 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall fire fuel oil having a maximum sulfur content of 0.003% by weight . This condition is established to meet BACT emission limit. [s. NR 405.08(2), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(2) The permittee shall determine the hourly emissions from each of B27 and B28 using fuel consumption records, and an
emission factor of 2.90 E

- 02 pound per million Btu, or other emission factor as approved in writing by the Department. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Sulfur Acid Mist Emissions: Whenever compliance emission testing is required, US EPA Method 8 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall record the monthly hours of operation of each of boilers B27 and B28, to demonstrate compliance with condition I.J.10.a.(2). [ss. 285.65(3) and (10), Wis. Stats.
and 03

- RV

- 248

- R4]

(3) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each of B27 and B28. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(4) The permittee shall maintain the records required under condition I.J.2.b.(4)

– (6) to demonstrate compliance with the sulfur content in the fuel. [s. NR 439.04(1)(d), Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 176

K. Sta ck S63, Process B63

– Natural Gas Heater Station #1

Stack S64, Process B64

– Natural Gas Heater Station #2

Stack S69, Process B69

– Rail Car Repair Station Heater

– Installed 2005

Stack S70, Process B70

– Rail Car Repair Station Heater

– Installed 2005

Po llutant: 1. Particulate Matter Emissions (PM) and Particulate Matter Emissions less than 10 microns (PM 10 )

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 1.0 E

- 02 pounds PM per hour for B63; (ii) 6 .0 E

- 03 pounds PM10 per hour for B63; (iii) 1.0 E

- 02 pounds PM per hour for B64; (iv) 6.0 E

- 03 pounds PM10 per hour for B64; (v) 1.71 E

- 03 pound PM and PM10 per hour for B69; (vi) 1.71 E

- 03 pound PM and PM10 per hour for B70. (b) The permittee shall o nly fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an
emission factor of 7.6 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall perform annual inspections of each heater to ensure optimum perfo rmance. Items to be inspected include, but are not limited to: (a) Burner for proper physical condition and operation, (b) Air flow (windbox and damper) physical condition, (c) Flue gas path physical condition. [s. NR 407.09(1), Wis. Adm. Code, ss. 285 .65(3) and (10),
Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions : Whenever compliance emission testing is required, test procedures in 40 CFR 60 and US EPA Method 5, including backhalf (Method 202) or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the fuel design capabilities of each heater. [s. NR 439.04(1)(d) , Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The permittee shall retain copies of the equipment manufacturer information for the boiler. [s. NR 439.04(1)(d), Wis. Adm. Code]

(4) The permittee shall keep records of: (a) the date, time, and initials of the pe rson(s) performing the inspections required by I.K.1.b.(3); (b) a list of the items inspected; (c) observations/descriptions for each item inspected; (d) any maintenance, repairs or adjustments performed as a result of these inspections. [s. NR 439.04(1)(d ), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 177

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B 70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 2 . Sulfur Dioxide (SO2)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 4.0 E

- 04 pound per hour for B63; (ii) 4.0 E

- 04 pounds per hour for B64; (iii) 1.35 E

- 04 pound per hour for B69; (iv) 1.35E

- 04 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Comp liance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Ad m. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an emission factor of 0.6 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. S tats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Sulfur Dioxide Emissions: Whenever compliance emission testing is required, US EPA Method 6, 6A or 6C or an alternate method approved in writing by the Department, shall be used to demonstrate complian ce. [s. NR 439.06(2), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 178

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 3 . Oxid es of Nitrogen (NOx)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 7.3 E

- 02 pound per hour for B63; (ii) 7.3 E

- 02 pounds per hour for B64; (iii) 2.25 E

- 02 pound per hour for B69; (iv) 2.25 E

- 02 p ound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitor ing: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an emission factor of 100 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall als o be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Nitrogen Oxide Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR 60, US EPA Method 7 or an alternate method approved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(6), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c.(3) and (4) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 179

K. Stack S63, Process B63

– Natural Gas Heater Station # 1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 4 . Carbon Monoxid e (CO)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 6.0 E

- 02 pound per hour for B63; (ii) 6.0 E

- 02 pounds per hour for B64; (ii) 1.89 E

- 02 pound per hour for B69; (iii) 1.89 E

- 02 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This
condition is established to meet the BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design fuel rate use and an emission factor of 84 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall also be used as

c ompliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Carbon Monoxide Emissions: Whenever compliance emission testing is required, US EPA Method 10, or an alternate method approved in wri ting by the Department shall be used to demonstrate compliance. [s. NR 439.06(4), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c.(3) and (4) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 180

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Nat ural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 5. Volatile Organic Compounds (VOC)

a. Limitations: (1) Be st Available Control Technology (BACT): (a) Emissions may not exceed: (i) 4.0 E

- 03 pound per hour for B63; (ii) 4.0 E

- 03 pounds per hour for B64; (iii) 1.24 E

- 03 pound per hour for B69; (iv) 1.24 E

- 03 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This
condition is established to meet the BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an
emission factor of 5.5 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall also be used as compliance demonstration req uirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for VOC Emissions: Whenever compliance emission testing is required, test procedures in 40 CFR Part 60, Appendix A, US EPA Method 25 or 18, or an
alternate method a pproved in writing by the Department shall be used to demonstrate compliance. [s. NR 439.06(3), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c.(3) and (4) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 181

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Pr ocess B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 6 . Lead Emissions

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 3.68E

- 07 pound per hour for B63; (ii) 3.68E

- 07 pounds per hour for B64; (iii) 1.13 E

- 07 pound per hour for B69; (iv) 1.13 E

- 07 pound per hour for B70. (b) The permittee shall on ly fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis. Adm.
Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an
emission factor of 5 E

- 0 4 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall also be used as compliance demonstration requirem ents for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Lead Emissions: Whenever compliance emission testing is required, US EPA Method 12 or an alternate method approved in writing by the Department, shall be used to dem onstrate compliance. [s. NR 439.06(5), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c. (3) and (4) shall also be used to meet the requirements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 182

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

St ack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 7

. Mercury Emissions

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions m ay not exceed: (i) 1.91E

- 07 pound per hour for B63; (ii) 1.91E

- 07 pounds per hour for B64; (iii) 5.86 E

- 08 pound per hour for B69; (iv) 5.86 E

- 08 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This
condition is established to meet BAC T emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis. Adm.
Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an
emission factor of 2.6 E

- 04 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a),
Wis. Adm. Code] (1) Reference Test Method for Mercury Emissions: Whenever compliance emission testing is required, US EPA Method 29 or an alternative method approved in writing by the department shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c.(3) and (4) shall also be used to meet the requi rements of this section. [s. NR 439.04(1), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 183

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station He ater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 8. Emissions of Fluorides

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 2.04E

- 04 pound per hour for B63; (ii) 2.04E

- 04 pounds per hour for B64; (iii) 6.3 E

- 05 pound per hour for B69; (iv) 6.3 E

- 05 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(1 0), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall use the design rate for fuel use and an
emission factor of 0.291 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats.
and 03

- RV

- 248

- R4]

(3) Compliance with I.K.1.b.(3) shall also be used as compliance demonstration requirements for this section. [s. NR 407.09(4)(a), Wis. Adm. Code] (1) Reference Test Method for Emissions of Fluorides: Whenever compliance emission testing is required, US EPA Method 13B or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The requirements of I.K.1.c.(3) and (4) shall also be used to meet the requirements of this section. [s. NR 439.04(1),
Wi s. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 184

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 9. Visible Emissions

a. Limitations: (1) 20% opacity or number 1 on the Ringlemann chart, with the following exceptions: (a) Visible emissions may exceed 20% opacity when combustion equipment i s being cleaned or a new fire started, emi s sions may not exceed number 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 137 (b) Visible emissions may exceed number 1 of the Ringlemann chart or 20% opacity for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition a rises. [ss. NR 405.08(2) and NR 431.05, Wis. Adm. Code and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall fire natural gas. This condition is
established to meet BACT emission limit

. 138 [s. NR 405.08(2), Wis. Adm. Code and 03

- RV

- 248

- R4] (1) Reference Test Method for Visible Emissions: Whenever compliance emission testing is required, US EPA Method 9 or an alternate method approved in writing by the Department,
shall be used to demon strate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain plans and specifications that indicate the process’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

137 When combustion equipment is being cleaned or a new fire started and opacity exceeds 2 0%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does no t restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one da y.

138 It is not expected that the visible emission limitation of 20% opacity would be exceeded while firin g this fuel. Therefore restricting the type of fuel used is adequate to demonstrate compliance with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 185

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 10. Sulfuric Acid Mist (H2SO4)

a. Limitations: (1) Best Available Control Technology (BACT): (a) Emissions may not exceed: (i) 6.75 E

- 05 pound per hour for B63; (ii) 6.75 E

- 05 pounds per hour for B64; (iii) 2.07 E

- 05 pound per hour fo r B69; (iv) 2.07 E

- 05 pound per hour for B70. (b) The permittee shall only fire natural gas in processes B63, B64, B69, and B70. [s. NR 405.08, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Re cordkeeping, and Monitoring: (1) The facility shall fire natural gas in these heaters. This condition is established to meet BACT emission limit. [ss. 285.65(3) and 285.65(10), Wis. Stats.; s. NR 405.08, Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permit tee shall use the design rate for fuel use and an
emission factor of 9.64 E

- 02 lbs/mmcuft or alternate data approved in writing by the Department to determine the hourly emissions. [s. 285.65(3) and s. 285.65(10), Wis. Stats.
and 03

- RV

- 248

- R4] (1) Referenc e Test Method for Sulfur Acid Mist Emissions: Whenever compliance emission testing is required, US EPA Method 8 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(8), Wis. Adm. Code]

(2) Th e permittee shall retain plans and specifications that indicate these heater’s fuel design capabilities. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 186

K. Stack S63, Process B63

– Natural Gas Heater Station #1



### - (CONTINUED)

Stack S64, Process B64

– Natural Gas Heater Station #2

– ( CONTINUED)

Stack S69, Process B69

– Rail Car Repair Station Heater

– (CONTINUED)

Stack S70, Process B70

– Rail Car Repair Station Heater

– (CONTINUED)

Pollutant: 11. Hazardous Air Pollutants Regulated by the Clean Air Act: National Emission Standards for Hazardous Air Pollutants for Industrial, Commercial and Institutional Boilers and Process Heaters at Major Sources (40 CFR, Part 63, Subpart DDDDD)

The permittee shall comply with the requirements of this section at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier. [40 CFR s. 63.7495(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations: (1) The permittee shall comply with the requirements of the National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, as applicable. 139 [ 40 CFR, Part 63, Subpart DDDDD , s. 285.65(13), Wis. Stats. ]

139 On March 21, 2011, an amended version of EPA’s National Emission Standard for Hazardous Air Pollutants (NESHAP) for Ind ustrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, was published as a final rule in the Federal Register (40 CFR Part 63, subpart DDDDD). Under the amended rule, natural gas heaters B69 and B70 were not considered “proces s heaters” pursuant to the definition in 40 CFR s. 63.7575, because the units are used for comfort heat and/or space heat.

Under the amended rule, natural gas heaters B63 and B64 are “process heaters” per the definition in 40 CFR s.
63.7575. Because each of these process heaters were constructed prior to June 4, 2010, they are considered existing affected sources, pursuant to 40 CFR s. 63.7490(d). Each heater burns natural gas and is included in the boiler and process heater subcategory “units designed t o burn natural gas, refinery gas or other gas 1 fuels” in 40 CFR s. 63.74999(l). Each of process heaters B63 and B64 have a heat input capacity less than 10 million Btu per hour (each rated at 0.73 million Btu per hour), As existing affected sources they were required to comply with the requirements of 40 CFR Part 63, subpart DDDDD of the amended rule no later than March 21,2014, pursuant to 40 CFR s. 63.7495(b).

However, on May 16, 2011 US EPA “stayed” this amended rule and will be seeking additional pu blic feedback and gathering more information on the final standards. The US EPA will accept additional data and information on the standard until July 15, 2011. This reconsideration delays the effective dates of the rule until such time as judicial
revie w is no longer pending or until US EPA completes its reconsideration of the rules, whichever is earlier. Because the NESHAP requirements for industrial, commercial, and institutional boilers and process heaters at major sources may change significantly, t hey are not included in the draft permit. When US EPA’s reconsideration of this NESHAP is complete or judicial review is no longer pending, whichever is earlier, the permittee will be required to comply with all applicable requirements by the established compliance dates and this operation permit would be revised to incorporate the applicable emission limitations, work practice and other requirements.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 187

L. S tack S67, Process B67

– North Natural Gas Station Heater for Natural Gas Supply System

– Rated at 1.5
mmBtu/hr

– Installed 1960

Stack S68, Process B68

– South Natural Gas Station Heater for Natural Gas Supply System

– Rated at 1.5
mmBtu/hr

– Installed 1960

Pollutant: 1. Particulate Matter Emissions

a. Limitations: (1) Emissions from EACH heater may not exceed the most restrictive of the following: 140
(a) 0.60 pounds per mmBtu; or (b) 0.01 pounds per hour. [s. NR 415.06(1)(a), Wis. Adm. Code, s. 285.6 3(1)(b), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in these
heaters. 141 [ss. NR 407.09(1)(c)1.b., Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stat s.] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required, the permittee shall use US EPA Method 5, 5A, 5B, 5D, 5E, 5F, 5G, 5H, 5I or 17 including condensable backhalf emissions (U.S. EPA Metho d 202) or any other method approved by the Department in writing. [s. NR 439.06(1), and (1m) Wis. Adm. Code]

(2) The permittee shall retain design specifications to demonstrate that each heater is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code]

140 Th e more restrictive limitation of 0.01 pounds per hour is necessary to ensure that the NAAQSs are atta ined and
maintained.

141 Because the emission limitation listed in I.L.1.a.(1)(b) is equal to the maximum theoretical emissions while firing natural gas, limiting the type of fuel used is adequate to demonstrate compliance with the particulate matter emissi on limit. Maximum theoretical particulate matter emissions were calculated using an emission factor of 7.6 pounds per million cubic feet of nat ural gas fired from AP

- 42, 5th edition, ch. 1.4.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 188

L. Stack S67, Process B67

– North Natural Gas Station Heater for Natural Gas Supply System

– (CONTINUED)

Stack S68, Process B68

– South Natural Gas Station Heater for Natural Gas Supply System

– (CONTINUED)

Pollutant: 2. Visib le Emissions

a. Limitations: (1) 40% opacity or number 2 on the Ringlemann chart, with the following exceptions:

(a) Visible emissions may exceed 40% opacity when combustion equipment is being cleaned or a new fire started, emi s sions may not exceed nu mber 4 of the Ringlemann chart or 80% opacity for more than 6 minutes in any one hour. Combustion equipment may not be cleaned nor a fire started more than 3 times per day. 142

(b) Visible emissions may exceed number 2 of the Ringlemann chart or 40% opaci ty for stated periods of time, as permitted by the department, for such purpose as an operating test, use of emergency equipment or other good cause, provided no hazard
or unsafe condition arises.
[s. NR 431.04(1), Wis. Adm. Code]
b. Compliance Demonst ration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall only fire natural gas in these
heaters. 143 [ss. NR 407.09(1)(c)1.b., Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats.] (1) Reference Test Method for Visible Emis sions: Whenever visible emission testing is required, the permittee shall use U.S. EPA Method 9 or any other method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall retain design specifications to
dem onstrate that each heater is solely designed to burn natural gas. [s. NR 439.04(1)(d), Wis. Adm. Code]

142 When combustion equipment is being cleaned or a new fire sta rted and opacity exceeds 40%, one 6

- minute exceedance per hour may be exempt, but no more than 3 exemptions per day are allowed. This provision does not restrict the number of cleanings or the number of fires that may be started in any day, only the number of exemptions that are allowed in any one day.

143 It is not expected that the visible emission limitation of 40% opacity would be exceeded while firing this fuel. Therefore restricting the type of fuel used is adequate to demonstrate compliance with the visible emission limitation.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 189

L. Stack S67, Process B67

– North Natural Gas Station Heater for Natural Gas Supply System

– (CONTINUED)

Stack S68, Process B68

– South Natura l Gas Station Heater for Natural Gas Supply System

– (CONTINUED)

Pollutant: 3. Hazardous Air Pollutants Regulated by the Clean Air Act: National Emission Standards for Hazardous Air Pollutants for Industrial, Commercial and Institutional Boilers and Pro cess Heaters at Major Sources (40 CFR, Part 63, Subpart DDDDD)

The permittee shall comply with the requirements of this section at such time as judicial review is no longer pending or US EPA completes its reconsideration of the rules, whichever is earlier . [40 CFR s. 63.7495(b)
, s. 285.65(13), Wis. Stats. ]

a. Limitations: (1) The permittee shall comply with the requirements of the National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Industrial, Commercial, and Institutional Boilers a nd Process Heaters at Major Sources, as applicable. 144 [ 40 CFR, Part 63, Subpart DDDDD , s. 285.65(13), Wis. Stats. ]

144 On March 21, 2011, an amended version of EPA’s National Emission Standard for Hazardous Air Pollutants (NESHAP) for Industrial, Commercial, and Institutional Boilers and Process Heaters at Major Sources, was published as a f inal rule in the Federal Register (40 CFR Part 63, subpart DDDDD). Under the amended rule, natural gas heaters B67, and B68 are “process heaters” per the definition in 40 CFR s. 63.7575. Because each of these process heaters were constructed prior to Jun e 4, 2010, they are considered existing affected sources, pursuant to 40 CFR s. 63.7490(d). Each heater burns natural gas and is included in the boiler and process heater subcategory “units designed to burn natural gas, refinery gas or other gas 1 fuels” in 40 CFR s. 63.74999(l). Each of process heaters B67, and B68 have a heat input capacity less than 10 million Btu per hour (each rated at 1.5 million Btus per hour). As existing affected sources they were required to comply with the requirements of 40 C FR Part 63, subpart DDDDD of the amended rule no later than March 21,2014, pursuant to 40 CFR s. 63.7495(b).

However, on May 16, 2011 US EPA “stayed” this amended rule and will be seeking additional public feedback and gathering more information on the fi nal standards. The US EPA will accept additional data and information on the standard until July 15, 2011. This reconsideration delays the effective dates of the rule until such time as judicial review is no longer pending or until US EPA completes its r econsideration of the rules, whichever is earlier. Because the NESHAP requirements for industrial, commercial, and institutional boilers and process heaters at major sources may change significantly, they are not included in the draft permit. When US EPA ’s reconsideration of this NESHAP is complete or judicial review is no longer pending, whichever is earlier, the permittee will be required to comply with all applicable requirements by the established compliance dates and this operation permit would be

re vised to incorporate the applicable emission limitations, work practice and other requirements.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 190

M. Stack S24, Process P24

– Weston Unit 3 Cooling Tower

– Installed 1978

Pollutant: 1. Chromium

a. Limitations: (1) No owner or operator of an exiting industrial process cooling tower may use chromium based water treatment chemicals in industrial process cooling tower on or after March 8, 1996. [s. NR 468.30(3)(a), Wis. Adm. Code, s. 285.65(3), Wis. Stats.] b. Compliance Demonst ration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall retain copies of the material safety data sheets (MSDS) of all the chemical used to treat water in the cooling tower. These records shall be used to show compliance with the limit in I.M.1.a.(1). [ss. NR 407.09(1)(c)1.b., Wis. Adm. Code and ss. 285.65(3) and 285.63(1)(a), Wis. Stats.] (1) Reference Test Method for Chromium Emissions: Whenever chromium emission testing is required by the Department, the permittee shall use U.S . EPA Method 0013 or other method approved by the Department in writing. [s. NR 439.06(8), Wis. Adm. Code]

(2) The permittee shall retain copies of all the MSDS of the treatment chemicals used at the facility. [s. NR 439.04(1)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 191

N. 

### S tack S26, Process P26

– Weston Unit 4 Cooling Tower

– Installed 9/24/2007

Pollutant: 1. Particulate Matter Emissions (PM)

a. Limitations: (1) The permittee shall apply Best Available Control Technology (BACT) as follows: (a) The use of high efficiency drift eliminators that will control drift to 0.0005%; and (b) Total hourly emissions may not exceed 1.14 pounds per hour. [s. NR 405.08(2), Wis. Adm. Code and ss. 285.65(3) and (7), Wis. Stats., 03

- RV

- 248

- R4]

(2) No owner or operator of a new industria l process cooling tower may use chromium

- based water treatment chemicals in industrial process cooling tower on or after September 8, 1994. [s. NR 468.30(3)(b), Wis. Adm. Code, s. 285.65(3), Wis. Stats., 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Te st Methods, Recordkeeping, and Monitoring: (1) The permittee shall monitor and record the water usage and the hours the cooling tower is operated on a daily basis. [ss. 285.65(3) and 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee shall demonstra te compliance with the BACT for PM/PM10 emission rate by operating the cooling
tower and drift eliminators in accordance with the manufacturer’s specifications. [s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4]

(3) The permittee shall retain copies of the mat erial safety data sheets (MSDS) of all chemicals used to treat water in the cooling tower. These records shall be used to show compliance of the limit in I.N.1.a.(c). [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4] (1) The records required under I.N.1.b.(1) shall be maintained for a period of at least five years and shall be made available to the Department upon request. [s. NR 439.04(1)(d) and (2), Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall retain copies of all the MSDS of the
treatment chemicals u sed at the facility. [s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall retain copies of the notification required under s. NR 468.30(4)(a) and (b), Wis. Adm. Code at the facility for a minimum of 5 years. The notification shall be
made available to Department staff on request during normal business hours. [s. NR 468.30(4)(d), Wis. Adm. Code and
03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 192

O. Processes P31A, P31B, P31C

- Stacks S31A, S31B, S31C

- Control Devices C31A, C31B, C31C

– Weston Unit 3
Coal Unloadin g

– Installed 1978 Enclosed Building (Dumper House) with 2 Baghouses (C31A and C31B) Junction House Baghouse (C31C)

Processes P32A, P32B, P32C, P32D, P32E

- Stacks S32A, S32B, S32C, S32D, S32E

- Control Devices C32A, C32B, C32C, C32D, C32E

– Weston Units 3 & 4 Crusher House

– Installed 1978 Crusher house enclosed and equipped with two baghouses (C32A and C32B), Crusher House Agglomerator

- Equipped with Baghouse (C32C) Coal Storage Silos and Cascade Conveyor

- Equipped with Baghouses (C32D and C32E)

Pr ocess P34

– Stack S34

- Control Device C34

– Weston Units 1&2 Transport Coal Conveyor #8

- Equipped with Baghouse

– Installed 1992

Processes P35A, P35B

- Stacks S35A, S35B

- Control Devices C35A, S35B

– Weston Units 1&2:
Crusher House

- Equipped with Bag house (C35A)

– Installed/Last Modified 1995 Conveyor C and Coal Bunker

- Equipped with Baghouse (C35B)

– Installed/Last Modified 1995

Process P36A, P36B

- Stacks S36A, S36B

- Control Devices C36A, C36B

– Weston Unit 3: Fly Ash Transfer & Handling (Baghous e C36A)

– Installed/Last Modified 1995 Fly Ash Silo (Baghouse C36B)

– Installed/Last Modified 1995

Process P37S, P37B

- Stacks S37A, S37B

- Control Device C37A, C37B

– Weston Units 1 & 2: Fly Ash Transfer and Handling (Baghouse C37A)

– Installed 1962, Last Modified 1996 Fly Ash Silo (Baghouse C37B)

– Installed 1962, Last Modified 1996

Stack S39, Process P39, Control Device C39

– Weston Unit 3 Flyash Storage Building Controlled with Baghouse

– Installed 1993

Pollutant: 1. Particulate Matter Emissions (PM /PM10)

a. Limitations: (1) Emissions may not exceed the most restrictive of: 145 (a) 0.20 pounds per 1000 pounds gas; (b) E = 17.13 P 0.16 where E is the emission limitation in pounds per hour and P is the process weight rate in tons per hour; or (c) Th e following rates for each stack: (i) S31A: 1. 75 pounds per hour ; (ii) S31B: 1.75 pounds per hour ; (iii) S31C: 0.49 pounds per hour; (iv) S32A: 1.09 pounds per hour; (v) S32B: 1.51 pounds per hour; (vi) S32C: 0.04 pounds per hour; (vii) S32 D: 1.76 pounds per hour; (viii) S32E: 2.21 pounds per hour; (ix) S34: 0.52 pounds per hour; (x) S35A: 0.53 pounds per hour; (xi) S35B: 1.03 pounds per hour; (xii) S36A: 0.38 pounds per hour; (xiii) S36B: 0.23 pounds per hour; (xiv) S37A: 0.58 pounds per hour; (xv) S37B: 0.13 pounds per hour; (xvi) S39: 0.21 pounds per hour. [ss. NR 415.05(1)(m) and NR 415.05(2), Wis. Adm. Code

, ss. 285.63(1)(b) and 285.65(3), Wis. Stats. , 737009020

- P10, and Stipulation and Order for Judgement, Marathon C ounty Case No. 08

- CX

- 3 ]

(2) The permittee may not cause, allow, or permit any materials to be handled, transported, or stored without taking precautions to prevent particulate matter from becoming airborne. Nor may the permittee allow a structure, a parkin g lot, or a road to be used, constructed, altered, repaired, sand blasted, or demolished without taking such precautions. [s. NR 415.04, Wis. Adm. Code]

145 The emission limitations listed in I.O.1.a.(1)(c)are necessary to ensure the National Ambient Air Quality Standards for particulate matter
are attained and ma intained.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 193

O. Processes P31A, P31B, P31C

- Stacks S31A, S31B, S31C

- Control Devices C31A, C31B, C31C

– Weston Unit 3 Coal Unloading

– (CONTINUED)

Process P32A, P32B, P32C, P32D, P32E

- Stacks S32A, S32B, S32C, S32D, S32E

- Control Devices C32A, C32B, C32C, C32D, C32E

– Weston Units 3 & 4 Crusher House

– (CONTINUED)

Process P34

– Stack S34

- Control Device C34

– Weston Units 1&2 Transport Coal Conveyor #8

- Equipped with Baghouse

– (CONTINUED)

Process P35A, P35B

- Stacks S35A, S35B

- Control Devices C35A, S35B

– Weston Units 1&2 Crusher House, Conveyor C and Coal Bunker

– ( CONTINUED)

Process P36A, P36B

- Stack s S36A, S36B

- Control Devices C36A, C36B

– Weston Unit 3 Fly Ash Transfer, Handling, and Silo

– (CONTINUED)

Process P37A, P37B

- Stacks S37A, S37B

- Control Device C37A, C37B

– Weston Units 1 & 2 Fly Ash Transfer, Handling, and Silo

Stack S39, Process P39 , Control Device C39

– Weston Unit 3 Flyash Storage Building Controlled with Baghouse

– Installed 1993

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 1) The permittee shall operate baghouse(s) in a manner that control s particulate matter emissions from each process whenever each process is operating , so that the emission limitations in condition I.O.1.a.(1) are met

. [s. NR 415.04(1)(c), Wis. Adm. Code]

(2) The permittee shall perform daily visible inspections of each exhaust stack to detect visible emissions. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code]

(3) The permittee shall install and operate a pressure drop monitoring device to measure the pressure dr op across each baghouse (in water column) [ss. NR 439.055(1)(a), and (2)(b), Wis. Adm. Code]

( 4 ) The permittee shall operate an alarm system on each baghouse to monitor the differential pressure created by each fan, which exhausts emissions from the bagh ouse. An alarm shall be set to alert the operator if the pressure drop is outside the associated range specified in condition I.O.1.b.( 6 ) (b)

. If an alarm occurs, the permittee shall take appropriate investigative and corrective action. [s. NR 407.09(4)(a) 3.b., Wis. Adm. Code]

( 5 ) The permittee shall instruct a designated staff person(s) to monitor each process for fugitive emissions. Upon detecting any fugitive emissions, the permittee shall initiate appropriate investigative and/or corrective actions ne cessary to prevent fugitive dust from becoming airborne. [s. 285.65(3), Wis. Stats. ]

(6) Compliance Assurance Monitoring (CAM) Requirements: Processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P34, P35A, P35B, P36A, P36B, and P37A are each pollutant

- s pecific emissions units for particulate matter emissions and are each subject to the CAM requirements of Part 64 CFR. Processes P32C, P37B, and P39 are not subject to the CAM requirements of Part 64, CFR, however the permittee has elected to comply with t hese CAM requires for these additional processes. 146 As such each process is subject to the CAM requirements in Part IV and section I.XXX.9. of this permit, and as follows:

{Continued on Next Page...} (1) Reference Test Method for
Particulate Matter Emission s: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf (Method 202) or other method approved by the Department in writing. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall measure and record the pressure drop across each baghouse (in water column) once every 8 hours that the associated process is in operation, or once per day, whichever yields the greater number of measurements. [ss. NR 439.055(1)(a), and (2)(b) , Wis. Adm. Code]

(3) The permittee shall maintain daily records of the visual inspections of each exhaust stack required by I.O.1.b.(2) that include: (a) the date and time of the inspection; (b) the initials of the person performing the inspection; (c) t he results of the inspection; and (d) a description of any maintenance or repairs performed as a result of the inspection. [s. NR 439.04(1)(d), Wis. Adm. Code]

146 Note: Processes P32C, P37B and P39, do not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and therefore are not subject to CAM requirements, pursuant to Part 64, CFR. However, the permit tee has elected to include these emissions units in the CAM Plan for consistency.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 194

O. Processes P31A, P31B, P31C

- Stacks S31A, S31B, S31C

- Control Devices C31A, C31B, C31 C

– Weston Unit 3 Coal Unloading

– (CONTINUED)

Process P32A, P32B, P32C, P32D, P32E

- Stacks S32A, S32B, S32C, S32D, S32E

- Control Devices C32A, C32B, C32C, C32D, C32E

– Weston Units 3 & 4 Crusher House

– (CONTINUED)

Process P34

– Stack S34

- Control D evice C34

– Weston Units 1&2 Transport Coal Conveyor #8

- Equipped with Baghouse

– (CONTINUED)

Process P35A, P35B

- Stacks S35A, S35B

- Control Devices C35A, S35B

– Weston Units 1&2 Crusher House, Conveyor C and Coal Bunker

– ( CONTINUED)

Process P36A, P3 6B

- Stacks S36A, S36B

- Control Devices C36A, C36B

– Weston Unit 3 Fly Ash Transfer, Handling, and Silo

– (CONTINUED)

Process P37A, P37B

- Stacks S37A, S37B

- Control Device C37A, C37B

– Weston Units 1 & 2 Fly Ash Transfer, Handling, and Silo

Stack S39, P rocess P39, Control Device C39

– Weston Unit 3 Flyash Storage Building Controlled with Baghouse

– Installed 1993

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping,
and Moni toring: (6) Compliance Assurance Monitoring (CAM) Requirements: {... Continued from Previous Page...}

(a) Whenever a process is operating, the permittee shall monitor differential pressure drop across the fabric filter baghouse system as an indicator o f co ntrol equipment performance ; (b) The indicator range for differential pressure drop across each baghouse controlling a process is as follows: (i) P31A, P31B: 0.5 to 8.5 inches of water (ii) P31C: 0.5 to 7.0 inches of water (iii) P32A, B32B, P32C: 0.5 to 7.0 inches of water (iv) P32D, P32E: 0.5 to 8.5 inches of water (v) P34: 0.5 to 7.0 inches of water (vi) P35A, P35B: 0.5 to 7.0 inches of water (vii) P36A: 1.0 to 35.0 inches of water (viii) P36B:

- 1.0 to 7.0 inches of water (ix) P37A: 0.5 to 25.0 i nches of water (x) P37B:

- 1.0 to 7.0 inches of water (xi) P39: 0.5 to 8.0 inches of water (c) A differential pressure drop reading outside of the applicable indicator range specified in condition I.O.1.b.(6)(b) shall trigger a visual inspection of the exh aust stack for any visible emissions, as a secondary indicator of compliance. ( d ) An excursion is a differential pressure drop reading outside the indicator range in condition I.O.1.b.( 6 )(b) and any visible emissions are noted as a result of the visual
in spection of the exhaust stack following an alarm ; ( e ) The permittee shall operate an alarm system on each baghouse to alert the operator if the differential pressure drop across any baghouse is outside the applicable range specified in
condition I. O .1.b. ( 6 )(b). If an alarm occurs, the permittee shall visually inspect the exhaust stack for any visible emissions and take appropriate investigative and corrective action. ( f

) The quality improvement plan (QIP) threshold is reached when excursions occur for

mo re than 5% of each individual process ’s operating time in a six month reporting period. [s. 285.65( 13 ), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b. and s. NR 439.0 5 5(5), Wis. Adm. Code, and 40 CFR ss. 64.2, 64.3, 64.6, 64.7, and 64.8 (excep t for processes P32C, P37B,
and P39 : s. 285.65(7), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b, Wis. Adm. Code ] (4) The permittee shall maintain records of any investigative and corrective
action taken as a result of a differential pressure alarm that
include: (a) date a nd time of the alarm; (b) date, time, and results of the visual inspection of the exhaust
stack for visible emissions required by condition I.O.1.b.(6)(c); ( c ) a description of the investigative actions taken; and (d ) the type of corrective action
taken. [s. NR 439.04(1)(d), Wis. Adm. Code]

(5) The permittee shall
maintain records of all inspections, checks and any maintenance or repairs performed on the fabric filter baghouse systems, including the date of the action, initials of inspector, and the resu lts. [s. NR 439.04(1)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 195

O. Processes P31A, P31B, P31C

- Stacks S31A, S31B, S31C

- Control Devices C31A, C31B, C31C

– Weston Unit 3 Coal Unloading

– (CONTINUED)

Process P32A, P32B, P32C, P32D, P32E

- Stacks S32A, S32B, S32C, S32D, S3 2E

- Control Devices C32A, C32B, C32C, C32D, C32E

– Weston Units 3 & 4 Crusher House

– (CONTINUED)

Process P34

– Stack S34

- Control Device C34

– Weston Units 1&2 Transport Coal Conveyor #8

- Equipped with Baghouse

– (CONTINUED)

Process P35A, P35B

- Stack s S35A, S35B

- Control Devices C35A, S35B

– Weston Units 1&2 Crusher House, Conveyor C and Coal Bunker

– ( CONTINUED)

Process P36A, P36B

- Stacks S36A, S36B

- Control Devices C36A, C36B

– Weston Unit 3 Fly Ash Transfer, Handling, and Silo

– (CONTINUED)

P rocess P37A, P37B

- Stacks S37A, S37B

- Control Device C37A, C37B

– Weston Units 1 & 2 Fly Ash Transfer, Handling, and Silo

Stack S39, Process P39, Control Device C39

– Weston Unit 3 Flyash Storage Building Controlled with Baghouse

– Installed 1993

Polluta nt: 2. Visible Emissions

a. Limitations:

(1) 20% opacity number 1 on the Ringlemann chart. [s. NR 431.05, Wis. Adm. Code and for P32A, P32B, P32C, P32D and P32E: s. NR 440.42(3)(c), Wis. Adm. Code ]
b. Compliance Demonstration: c. Test Methods, Rec ordkeeping, and Monitoring: (1) Same as particulate matter. See I.O.1.b.(1) to (5) above. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or other method approved by the Department in writing. [s. NR 439.06(9)(a)1.,
Wis. Adm. Code and for P32A, P32B, P32C, P32D, and
P32E: s s. NR 439.07(8)(f)

, NR 440.42(5), and NR 440.42(5)(b)2.

, Wis, Adm. Code ]

(2) Same as particulate mat ter. See I.O.1.b.(2) to (5) above. [s. 285.65(3), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 196

P. Process P30

- Stack S30

- Control Device C30

– Weston Unit 4 System 1, New Reclaim Tunnel Exit #34

– Installed
2/14/2008

Process P41

- Stack S41

– Control Device C41

– Weston Unit 4 Sys tem 2, New Junction House 2, #31

– Installed
3/19/2008

Process P42

- Stack S42

– Control Device C42

– Weston Unit 4 System 3, New Junction House 3, #32

– Installed
3/19/2008

Process P43

- Stack S43

– Control Device C43

– Weston Unit 4 System 4, Unit 4 Silo Fill System, #7

- Installed
3/19/2008

Process P44

- Stack S44

– Control Device C44

– Weston Unit 4 System 1, Lime Storage Silo Bin Vent #22

- Installed 12/13/2007

Process P45

- Stack S45

– Control Device C45

– Weston Unit 4 System 2, Lime Storage Silo Bin Vent #27

- Installed 12/13/2007

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.01 grains per dry standard cubic foot of exhaust gas; and (b) The following rates for each stack: 147 (i) S30: 0.79 pounds per hour; (ii) S41: 2.59 pounds per hour; (iii) S42: 0.79 pounds per hour; (iv) S43: 3.84 pounds per hour; (v) S44: 0.10 pounds per hour; (vi) S45: 0.26 pounds per hour [ss. NR 405.08, NR 415.05(1)(m) and NR 415.05(2), Wis. Adm. Code; ss. 285.63(1)(b) and 285.65(3), Wis. Stats., 03

- RV

- 248

- R4]

(2) The permittee may not cause, allow, or permit any materials to be handled, transported, or stored without taking precautions to prevent particula te matter from becoming airborne. Nor may the permittee allow a structure, a parking lot, or a road to be used, constructed, altered, repaired, sand blasted, or demolished without taking such precautions. [s. NR 415.04, Wis. Adm. Code, 03

- RV

- 248

- R4]

b. C ompliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall operate baghouse(s) in a manner
that control s particulate matter emissions from each process whenever each process is operating, so that the
emission limitat ions in condition I.P.1.a.(1) are met . [s. NR 415.04(1)(c), Wis. Adm. Code, 03

- RV

- 248

- R4 ]

(2) The permittee shall perform daily visible inspections of each exhaust stack to detect visible emissions. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code, 03

- RV

- 248

- R4]

(3) The permittee shall install and operate a pressure drop monitoring device to measure the pressure drop across each baghouse (in water column) [ss. NR 439.055(1)(a), and (2)(b), Wis. Adm. Code, 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate M atter Emissions: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf (Method 202) or other method approved by the Department in writing. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall measure and record the pressure drop across each baghouse (in water column) once every 8 hours that the associated process is in operation, or once per day, whichever yields the greater number of measurements. [ss. NR 439.055(1)( a), and (2)(b), Wis. Adm. Code, 03

- RV

- 248

- R4]

(3) The permittee shall maintain daily records of the visual inspections of each exhaust stack required by I. P .1.b.(2) that
include: (a) the date and time of the inspection; (b) the initials of the person perf orming the inspection; (c) the results of the inspection; and (d) a description of any maintenance or repairs performed as a result of the inspection. [s. NR 439.04(1)(d), Wis. Adm. Code, ] 03

- RV

- 248

- R4

147 The emission limitation s listed in I.P.1.a.(1)(b)are necessary to ensure the National Ambient Air Quality Standards for particulate matter are attained and maintained.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 197

P. Process P30

- Stack S30

- Control Device C30

– Weston Unit 4 System 1, New Reclaim Tunnel Exit #34

– (CONT’D)

Process P41

- Stack S41

– Control Device C41

– Weston Unit 4 System 2, New Junction House 2, #31

– (CONT’D)

Process P42

- Stack S42

– Control Device C42

– Weston Unit 4 System 3, New Junctio n House 3, #32

– (CONT’D)

Process P43

- Stack S43

– Control Device C43

– Weston Unit 4 System 4, Unit 4 Silo Fill System, #7

– (CONT’D)

Process P44

- Stack S44

– Control Device C44

– Weston Unit 4 System 1, Lime Storage Silo Bin Vent #22

– (CONT’D)

Process P45

- Stack S45

– Control Device C45

– Weston Unit 4 System 2, Lime Storage Silo Bin Vent #27

– (CONT’D)

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitor ing: ( 4 ) The permittee shall operate an alarm system on each baghouse to monitor the differential pressure created by each fan, which exhausts emissions from the baghouse. An alarm shall be set to alert the operator if the pressure drop is outside
the as sociated range specified in condition I.P.1.b.( 6 ) (b)

. If an alarm occurs, the permittee shall take appropriate investigative and corrective action. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code, 03

- RV

- 248

- R4]

( 5 ) The permittee shall instruct a designated staff person(s) to monitor each process for fugitive emissions. Upon detecting any fugitive emissions, the permittee shall initiate appropriate investigative and/or corrective actions necessary to prevent fugitive dust from becoming airborne. [s. 285.65(3), Wis. Stats., 03

- RV

- 248

- R4]

( 6 ) Compliance Assurance Monitoring (CAM) Requirements: Processes P30, P41, P42, P43, and P45 are each pollutant

specific emissions units for particulate matter emissions and are each subject to the CAM requirements of Part 64 CFR. Process P44 is are not subject to the CAM requirements of Part 64, CFR, however the permittee has elected to comply with these CAM requires for this additional process. 148 As such each process is subject to the CAM requirements in Part
IV and section I.XXX.9. of this permit, and as follows: (a) Whenever a process is operating, the permittee shall monitor differential pressure drop across the fabric filter baghouse system as an indicator o f control equipment performance ; (b) The indicator range for d ifferential pressure drop across each baghouse controlling a process is as follows: (i) P30: 2.0 to 8.0 inches of water (ii) P41: 2.0 to 8.0 inches of water (iii) P42: 2.0 to 8.0 inches of water (iv) P43: 2.0 to 8.0 inches of water (v) P44:

- 1.0 to 8. 0 inches of water (vi) P45:

- 1.0 to 5.5 inches of water

{...Continued on Next Page...} (4) The permittee shall maintain records of any investigative
and corrective action taken as a result of a differential pressure alarm or fugitive emission observations t hat include: (a) date and time of the alarm; (b) date, time, and results of the visual inspection of the exhaust stack for visible emissions required by condition I.P.1.b.(6)(c); ( c ) a description of the investigative actions taken; and (d ) the type of co rrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R4]

(5) The permittee shall maintain records of all inspections, checks and any maintenance or repairs performed on the fabric filter baghouse systems, including: (a) the date of the action, (b) initials of inspector, and (c) the results. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R4]

148 No te: Process P44 does not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and therefore is not subject to CAM requirements, pursuant to Part 64, CFR. However, the permittee has elected to include this emissions units in the CAM Plan for consistency.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 198
P. Process P30

- Stack S30

- Control Device C30

– Weston Unit 4 System 1, New Reclaim Tunnel Exit #34

– (CONT’D)

Process P41

- Stack S41

– C ontrol Device C41

– Weston Unit 4 System 2, New Junction House 2, #31

– (CONT’D)

Process P42

- Stack S42

– Control Device C42

– Weston Unit 4 System 3, New Junction House 3, #32

– (CONT’D)

Process P43

- Stack S43

– Control Device C43

– Weston Unit 4 System 4, Unit 4 Silo Fill System, #7

– (CONT’D)

Process P44

- Stack S44

– Control Device C44

– Weston Unit 4 System 1, Lime Storage Silo Bin Vent #22

– (CONT’D)

Process P45

- Stack S45

– Control Device C45

– Weston Unit 4 System 2, Lime Storage Silo Bin Vent #2 7

– (CONT’D)

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (6) Compliance Assurance Monitoring (CAM) Requirements:

{...Continued from Previous Pa ge...}

(c) A differential pressure drop reading outside of the applicable indicator range specified in condition I.P.1.b.(6)(b) shall trigger a visual inspection of the exhaust stack for any visible emissions, as a secondary indicator of compliance. ( d ) An excursion is a differential pressure drop reading outside the indicator range in condition I.P.1.b.(6)(b) and any visible emissions are noted as a result of the visual inspection of the exhaust stack following an alarm ; (e ) The permittee shall operate a n alarm system on each baghouse to alert the operator if the differential pressure drop across any baghouse is outside the range applicable range specified in conditions I.P.1.b.(6)(b). If an alarm occurs, the permittee shall visually inspect the exhaust stack for any
visible emissions and take appropriate investigative and
corrective action. (f

) The quality improvement plan (QIP) threshold is reached
when excursions occur for more than 5% of each individual process’s operating time in a six month reportin g period. [s. 285.65( 13 ), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b. and ss. NR 439.055(1) and (5), Wis. Adm. Code, and 40 CFR ss. 64.2, 64.3, 64.6, 64.7, and 64.8 (except for process P44: s. 285.65(7), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b, Wis.
Adm . Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 199

P. Process P30

- Stack S30

- Control Device C30

– Weston Unit 4 System 1, New Reclaim Tunnel Exit #34

– (CONT’D)

Process P41

- Stack S41

– Control Device C41

– Weston Unit 4 System 2, New Junction House 2, #31

– (CONT’D)

Process P42

- Stack S 42

– Control Device C42

– Weston Unit 4 System 3, New Junction House 3, #32

– (CONT’D)

Process P43

- Stack S43

– Control Device C43

– Weston Unit 4 System 4, Unit 4 Silo Fill System, #7

– (CONT’D)

Process P44

- Stack S44

– Control Device C44

– Weston Unit 4 System 1, Lime Storage Silo Bin Vent #22

– (CONT’D)

Process P45

- Stack S45

– Control Device C45

– Weston Unit 4 System 2, Lime Storage Silo Bin Vent #27

– (CONT’D)

Pollutant: 2. Visible Emissions

a. Limitations:

(1) Best Available Control Techno logy (BACT): 10% opacity. [s. NR 431.05, Wis. Adm. Code; s. NR 405.09, Wis. Adm. Code; s. 285.65(3), Wis. Stats., 03

- RV

- 248

- R4 , and for P30 and P43: s. NR 440.42(3)(c), Wis. Adm. Code 149 ]

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Same as particulate matter. See I.P.1.b.(1) to (6) above. [s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or other method approved by the Department in writing. [s. NR 439.06(9)(a)1.,
Wis. Adm. Code and for P30 and P43: s s

. NR 439.07(8)(f)

, NR 440.42(3)(c), and NR 440.42(5)(b)2.

, Wis. Adm. Code ]

(2) Same as particulate matter. See I.P.1.b.(2) to (5) above. [s. 285.65(3), Wis. Stats.]

149 Processes P30 and P43 are subject to the New Source Performance Standard for Coal Preparation Plants outlined in s. NR 440.42, Wis. Adm. Code. Section NR 440.42(3)(c), Wis. Adm. Code prohibits the disch arge into the atmosphere from any affected coal processing and conveying equipment, coal storage system or coal transfer and loading system processing coal gases which exhibit 20% opacity or greater. Because the BACT limitation of 10% opacity is more rest rictive than the NSPS limitation of 20% opacity, compliance with BACT ensures compliance with the NSPS requirement.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 200

Q. Process P49, Stack S49, Control Device C49

– Weston Unit 4 System 4, FGD Byproduct Recycle Bin Vent, #24

- Installed 2/11/2008

Process P50, Stack S50, Control Device C50

– Weston Unit 4 System 5, FGD Waste Silo Bin Ven t, #20

- Installed
4/9/2008

Process P65, Stack S65, Control Device C65

– Weston Unit 4 PAC Storage Silo 4A

- Installed 1/24/2008

Process P66, Stack S66, Control Device C66

– Weston Unit 4 PAC Storage Silo 4B

- Installed 1/24/2008

Pollutant: 1. Particul ate Matter Emissions (PM/PM10)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.02 grains per dry standard cubic foot of exhaust gas; and (b) The following rates for each stack of: 150 (i) S49: 0.83 poun ds per hour; (ii) S50: 0.362 pounds per hour ; (iii) S65: 0.21 pounds per hour; (iv) S66: 0.21 pounds per hour [ss. NR 405.08, NR 415.05(1)(m) and NR 415.05(2), Wis. Adm. Code; ss. 285.63(1)(b) and 285.65(3), Wis. Stats., 03

- RV

248

- R4 ]

(2) The permitte e may not cause, allow, or permit any materials to be handled, transported, or stored without taking precautions to prevent particulate matter from becoming airborne. Nor may the permittee allow a structure, a parking lot, or a road to be used, constructed , altered, repaired, sand blasted, or demolished without taking such precautions. [s. NR 415.04, Wis. Adm. Code, 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall operate baghouse(s) in a
manner that control s particulate matter emissions from each process whenever each process is operating , so that the emissions limitations in condition I.Q.1.a.(1) are met

. [s. NR 415.04(1)(c), Wis. Adm. Code, 03

- RV

- 248

- R4]

(2) The permittee shall perform daily visible inspections of each exhaust stack to detect visible emissions. [s. NR 407.09(4)(a)3.b., Wis. Adm. Code,
03

- RV

- 248

- R4]

(3) The permittee shall install and operate a pressure drop monitoring device to measure the pressure drop across each bag house (in water column) [ss. NR 439.055(1)(a), and (2)(b), Wis. Adm. Code, 03

- RV

248

- R4]

( 4 ) The permittee shall operate an alarm system on each baghouse to monitor the differential pressure created by each fan, which exhausts emissions from the baghous e. An alarm shall be set to alert the operator if the pressure drop is outside the range specified in condition I.Q.1.b.(6)(b). If an alarm occurs, the permittee shall take appropriate investigative and corrective action. [s. NR 407.09(4)(a)3.b., Wis. Adm . Code, 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever particulate matter emission testing is required by the Department, the permittee shall use U.S. EPA Method 5, including backhalf (Method 202) or other method approve d by the Department in writing. [s. NR 439.06(1), Wis. Adm. Code]

(2) The permittee shall measure and record the pressure drop across each baghouse (in water column) once every 8 hours that the associated process is in operation, or once per day, whicheve r yields the greater number of measurements. [ss. NR 439.055(1)(a), and (2)(b), Wis. Adm. Code, 03

- RV

- 248

- R4]

(3) The permittee shall maintain daily records of the visual inspections of each exhaust stack required by I.O.1.b.(2) that include: (a) the dat e and time of the inspection; (b) the initials of the person performing the inspection; (c) the results of the inspection; and (d) a description of any maintenance or repairs performed as a result of the inspection. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R4]

(4) The permittee shall maintain records of any investigative and corrective action taken as a result of a differential pressure alarm or fugitive emission observations that include: (a) date and time of the alarm; (b) date, time, and results of the visual inspection of the exhaust stack for visible emissions required by condition I.Q.1.b.(6)(c); ( c ) a description of the investigative actions taken; and ( d ) the type of corrective action taken. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R 4]

150 The emission limitation s listed in I.Q.1.a.(1)(b)are necessary to ensure the National Ambient Air Quality Standards for particulate matter are attained and maintained.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 201

Q. Process P49, Stack S49, Control Device C49

– Weston Unit 4 System 4, FGD Byproduct Recycle Bin Vent, #24

- Installed 2/11/2008

Process P50, Stack S50, Control Device C50

– Weston Unit 4 System 5, FGD Waste Silo Bin Vent, #20

- Installed
4/9/2008

Process P65, Stack S65, Control Device C65

– Weston Unit 4 PAC Storage Silo 4A

- Installed 1/24/2008

Process P66, Stack S66, Control Device C66

– Weston Unit 4 PAC Storage Silo 4B

- Installed 1/24/2008

Pollutant: 1. Particulate Matter Emissions (PM/PM 10)

- (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 5 ) The permittee shall instruct a designated staff person(s) to monitor each process for fugitive emissions. U pon detecting any fugitive emissions

, t he permittee shall initiate appropriate investigative and/or corrective actions necessary to prevent fugitive dust from becoming airborne. [s. 285.65(3), Wis. Stats., 03

- RV

- 248

- R4]

(6) Compliance Assurance Monitoring (CAM) Requirements:
Processes P49 and P50 are each pollutant

- specific emissions units for particulate matter emissions and are each subject to the CAM requirements of Part 64 CFR. Processes P65 and P66 are not subject to the CAM requirements of Part 64, CFR, however the permittee has elected to comply with these CAM requires for these additional processes. 151 As such each process is subject to the CAM requirements in Part IV and section I.XXX.9. of this permit, and as follows: (a) Whenever a process is operating, the permittee shall monitor di fferential pressure drop across the fabric filter baghouse system as an indicator of control equipment performanc e ; (b) The indicator range for differential pressure drop across each baghouse controlling a process is as follows: (i) P49:

- 1.0 to 5.5 inche s of water (ii) P59:

- 1.0 to 8.0 inches of water (iii) P65:

- 1.0 to 5.0 inches of water (iv) P66:

- 1.0 to 5.0 inches of water (c) A differential pressure drop reading outside of the applicable indicator range specified in condition I.Q.1.b.(6)(b) shall trigger a visual inspection of the exhaust stack for any visible emissions, as a secondary indicator of compliance. ( d ) An excursion is a differential pressure drop reading outside the indicator range in condition I.Q.1.b.(6)(b) and any visible emissions a re noted as a result of the visual inspection of the exhaust stack following an alarm ; ( e ) The permittee shall operate an alarm system on each baghouse to alert the operator if the differential pressure drop across any baghouse is outside the range appli cable range specified in conditions I.Q.1.b.(6)(b). If an alarm occurs, the permittee shall visually inspect the exhaust stack for any visible
emissions and take appropriate investigative and corrective action. ( f

) The quality improvement plan (QIP) thres hold is reached when excursions occur for more than 5% of each individual process’s operating time in a six month reporting period. [s. 285.65( 13 ), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b. and s. NR 439.055(5), Wis. Adm. Code, and 40 CFR ss. 64.2, 64.3, 64.6, 64.7, and 64.8 (except for processes P32C, P37B, P39, P44, P65, P66: s. 285.65(7), Wis. Stats., ss. NR 407.09(4)(a)1. and 3.b, Wis. Adm. Code ] (5) The permittee shall maintain records of all inspections, checks and any maintenance or repairs perfor med on the fabric filter baghouse systems, including: (a) the date of the action, (b) initials of inspector, and (c) the results. [s. NR 439.04(1)(d), Wis. Adm. Code, 03

- RV

- 248

- R4]

151 Note: Processes P65 and P66 do not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and therefore are not subject to CAM requirements, pursuant to Part 64, CFR. However , the permittee has elected to include these emissions units in the CAM Plan for consistency.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 202

Q. Process P49, Stack S49, Control Device C49

– Weston Unit 4 Sys tem 4, FGD Byproduct Recycle Bin Vent, #24

– (CONTINUED)

Process P50, Stack S50, Control Device C50

– Weston Unit 4 System 5, FGD Waste Silo Bin Vent, #20

– (CONTINUED)

Process P65, Stack S65, Control Device C65

– Weston Unit 4 PAC Storage Silo 4A

– (CONTI NUED)

Process P66, Stack S66, Control Device C66

– Weston Unit 4 PAC Storage Silo 4B

– (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations:

(1) Best Available Control Technology (BACT): 10% opacity.
[s. NR 431.05, Wis. Adm. Code; s. NR 405. 09, Wis. Adm. Code; s. 285.65(3), Wis. Stats., 03

- RV

- 248

- R4]
b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Same as particulate matter. See I.Q.1.b.(1) to (6) above. [s. 285.65(3), Wis. Stats.] (1) Reference Test Metho d for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or other method approved by the Department in writing. [ s s. NR 439.06(9)(a)1. and NR 439.07(8)(f)

, Wis. Adm. Code]

(2) Same as particulate matter. See I.Q.1.b.(2) to (5) above. [s. 285.65(3), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 203

R

. Process F33 and F56

– Coal Storage and Pile Maintenance

Pollutant: 1. Fugitive Dust (PM/PM10)

a. Limitations: (1) The permittee may not cause or allow emis sions greater than 10% opacity from the coal pile storage area. [ss. NR 405.09 (F56 only), and NR 415.04, Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The permittee may not cause, allow, or permit any materials to be handled, transport ed, or stored without taking precautions to prevent particulate matter from becoming airborne. Nor may the permittee allow a structure, a parking lot, or a road to be used, constructed, altered, repaired, sand blasted, or demolished without taking such pre cautions. [s. NR 415.04, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) (a) The long term coal storage pile shall be adequately compacted
to minimize air and water infiltration. (b) Once compacted, the bulk of the pile shall be left undisturbed (inactive). (c) All coal slides, loose coal, or other storage pile disturbances shall be cleaned up and recompacted as soon as practical. (d) All peaks, windrows, and edges shall be knocked down, smoothed

out an d recompacted as soon as practical. [ss. NR 405.08 (F56 only), NR 406.10, NR 415.04(1)(b), Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(2) When trained staff observe visible emissions of 10% or more at the process, or 5% opacity or more a t the property fence line, the permittee shall take appropriate actions to control fugitive emissions. (e.g. increased watering, increased application of dust suppressants, increased street sweeping) [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) A surfactant (wet suppression spray and/or surface stabilizing agent) or cover material(s), shall be applied to the pile as follows: (a) To the active area of the pile at the beginning and end of each shift, at stack out and reclaim activity 152 . (Except when weather conditions exist such that precipitation and/or ambient temperature would control fugitive emissions); (b) To the active area during reclaim activities whenever any visible emissions are seen beyond the c oal pile boundary; (c) To the inactive area of the coal storage pile whenever any visible emissions are seen beyond the coal pile boundary; or (c) Whenever the Trained Person identified in I.R.1.b.(5) determines
additional surfactant is needed. [ss. NR 405.08 (F56 only), NR 406.10, and NR 415.04(1)(b), Wis. Adm. Code; s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(4) The permittee shall designate at least one Trained Person to monitor compliance with the emission limitation, the requirements of
this se ction of the permit, and the measures for preventing particulate matter from becoming airborne. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever comp liance emission testing is required, the appropriate US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) For each day of operation the permittee shall maintain records of the specific measures taken to control fugitive particulate matter emissions. These
records shall include: (a) the date; (b) the signature of the Trained Person identified in I.R.1.b.(4) ; and (c) a description of the specific me asure(s) taken ( i. e. area to which surfactant (wet suppression spray and/or surface stabilizing agent) or cover material was applied, and the amount applied)

. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

248

- R4]

(3) The permittee shall maintain records of the inspections required by I.R.1.b.(6). [s. NR 439.04(1)(d), Wis. Adm. Code]

(4) The permittee shall retain copies of the Method 9 certification, other training or qualifications, or written Department approval of the Trained Person
identified in I. R.1.b.(4). [s. NR 439.04(1)(d), Wis.
Adm. Code and 03

- RV

- 248

- R4]

152 When the beginning of a shift and the end of a shift coincide with each other, the permittee need only apply surfactant one
time.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 204

R

. Process F33 and F56

– Coal Storage and Pile Maintenance

– (CONTINUED)

Pollutant: 1. Fugitive Dust (PM/PM10)

– (CONTINUED) b. Compliance Demonstration: c. Test Methods, Recordk eeping, and Monitoring: (5) The permittee shall ensure that the Trained Person identified in I.R.1.b.(5) has: (a) Received training to evaluate compliance with the requirements of this section of the permit and the measures for preventing particulate mat ter from becoming airborne, or (b) Obtained certification as a Method 9 opacity observer in the last 2

years , or (c) Attended appropriate training or has other reasonable qualifications and has written Department approval to act as the
Trained Person fo r the purpose of this permit. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats.
and 03

- RV

- 248

- R4]

(6) The Trained Person identified in I.R.1.b.(5) shall conduct inspections of the coal storage pile as follows: (a) Weekly inspections of the inactive coal storage pile; (b) Daily inspections of the active coal pile area, to determine the continued effectiveness of the surfactant, whenever coal is reclaimed from the pile. [ss. NR 405.08 (F56 only), NR 406.10, NR 415.04(1)(b), Wis. Adm. Co de; s. 285.65(3), Wis. Stats. and 03

- RV

248

- R4]

R

. Process F33 and F56

– Coal Storage and Pile Maintenance

– (CONTINUED)

Pollutant: 2 . * Hazardous Pollutants

a. Limitations: (1) * The permittee shall comply with the Control and Compliance Re quirements for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 445.10, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) * The permittee shall comply with the Control and Compliance Req uirements for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 445.10, Wis. Adm. Code] (1) * The permittee shall comply with the Control and Compliance Requirements for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 44 5.10, Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 205

S

. Process F38

– Bottom and Fly Ash Storage Site

Pollutant: 1. Particulate Matter

– Fugitive Dust Emissions

a. Limitations: (1) The permittee may not cause, allow, or permit any materials to be handled, transported, or store d without taking precautions to prevent particulate matter from becoming airborne. Nor may the permittee allow a structure, a parking lot, or a road to be used, constructed, altered, repaired, sand blasted, or demolished without taking such precautions. [s . NR 415.04, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall apply water, wet suppression spray, surface stabilizing agent and/or cover material(s) as needed to prevent particulate ma tter from becoming airborne. [s. NR 415.04(1)(b), Wis. Adm. Code]

(2) Ash shall be hauled offsite in enclosed tanker(s) or in trucks. The ash within any open bed of a truck shall be tarped when leaving the facility to prevent material from falling off and becoming airborne. [s. NR 415.04(1)(b), Wis. Adm. Code] (1) When applying suppressant for dust control, the permittee
shall record: (a) the date and time of the application; and (b) the area(s) at the facility where suppressant is applied. [s.
NR 439. 04(1)(d), Wis. Adm. Code]

S. Process F38

– Bottom and Fly Ash Storage Site

– (CONTINUED)

Pollutant: 2. Visible Emissions

a. Limitations: (1) Fugitive emissions from any outdoor source and building or structure egress other than a stack shall be controlled such that visible emissions do not exceed 20% opacity except for 3 minutes in any hour when fugitive emissions may equal 50% opacity. [s. NR 415.04(2)(6)1. and (c)2., Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeepin g, and Monitoring: (1) Same as particulate matter. See I.S.1.b.(1) and (2) above. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code and s. 285.65(3), Wis. Stats.] (1) Reference Test Method for Visible Emissions: Whenever visible emission testing is required by the Department, the permittee shall use U.S. EPA Method 9 or other method approved by the Department in writing. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

( 2) Same as particulate matter. See I.S.1.c.(1) above. [s. NR 439.04(1)(d), Wis. Adm. Code and s. 285.65(3), Wis. Stats.]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 206

T. Stack S40, Process P40

– Conveyor 11 Telescopic Chute #29

Pollutant: 1. Particulate Matter Emissions (PM/PM10)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.484 Pound PM per h our; and (b) 0.23 pound PM10 per hour. [ss. NR 405.08 and NR 415.06(2)(c), Wis. Adm. Code, s. 285.65(3), Wis. Stats., and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall utilize a te lescopic chute to meet the BACT limits. [s. NR 405.08, Wis. Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall determine the hourly emissions using the daily throughput and an emission factor of 1.61 E

- 04 pound per
ton of coal for PM and 7.63 E

- 05 pound per ton of coal for PM10 or other emission factors approved in writing by the Department. 153 . [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

(3) The permittee shall designate at least one Trained Person to monitor compliance with the emission limitation, the requirements of this section of the permit, and the measures for preventing particulate matter from becoming airborne. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4]

(4) The permittee shall ensure that the Trained Pe rson identified in I.T.1.b.(4) meets the training requirements of I.R.1.b.(5). [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission testing is required, the appropriate US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) For each day of operation the permittee shall
maintain records of the specific measures taken to control fugitive particulate matter emissions. These records shall
include: (a) the date; (b) the signature of the Trained Person identified in I.T.1.b.(3) (c) a description of the specific measure(s) taken (e.g. area to which dust suppressant was applied, amount of amount of dust suppressant applied) [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]

(3) The permittee shall retain copies of the Method 9 certification, other training or qualifications, or writt en Department approval of the Trained Person identified in I.T.1.b.(3). [s. NR 439.04(1)(d), Wis. Adm. Code and
03

- RV

- 248

- R4]

T

. Stack S40, Process P40

– Conveyor 11 Telescopic Chute #29

– (CONTINUED)

Pollutant: 2. * Hazardous Pollutants

a. Limit ations: (1) * The permittee shall comply with the Control and Compliance Requirements for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 445.10, Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monit oring: (1) * The permittee shall comply with the Control and Compliance Requirements for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 445.10, Wis. Adm. Code] (1) * The permittee shall comply with the Control and Compliance Require ments for the Handling and Storage of Coal in conditions I.XXX.6.a. [s. NR 445.10, Wis. Adm. Code]

153 Emissions were calculated fo r P40 based upon a capacity of 3000 tons of coal handled per hour.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 207

U

. Process F134

– Facility Haul Roads

Pollutant: 1. Fugitive Dust (PM/PM10)

a. Limitations: (1) Best Available Control Technology (BACT): The permittee shall: (a) Pave haul roads where possible; (b) Water roadways; (c) Sweep roadways. [ss. NR 405.08 and NR 431.05, Wis. Adm. Code; s. 285.65(3), Wis. Stats., and 03

- RV

- 248

- R4]

(2) The permittee may not cause, allow, or permit any material s to be handled, transported, or stored without taking precautions to prevent particulate matter from becoming airborne. Those precautions shall include, but not be limited to, th e following: (a) The measures specified in 1.a.(1) above, and (b) Covering, securing, or wetting materials transported by truck(s) to prevent material from falling off and from becoming
airborne. [s. NR 415.04, Wis. Adm. Code, Permit # 10

- MHR

- 184

- R1] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) All facility haul roads that lead to active piles shall be paved. [s. NR 405.08, Wis. Adm. Code, Permit #s 03

- RV

248

- R4, and 10

- MHR

- 184]

(2) All other facility haul roads that do not lead to active piles shall be paved where possible to meet the BAC T limits. [s. NR 405.08, Wis. Adm. Code and Permit #s 03

- RV

- 248

- R4
and 10

- MHR

- 184]

( 3 ) All facility haul roads shall be swept, at minimum, daily (except when weather conditions exist such that precipitation and/or ambient temperature would control fugitiv e emissions or prevent vacuum sweeping’s effectiveness). If, in the opinion of the Trained Person additional roadways sweeping is necessary to prevent inappropriate fugitive dust emissions it will be conducted as soon as practical. [s. NR 405.08, Wis.
Ad m. Code and 03

- RV

- 248

- R4]

(4) Water the roadways to minimize fugitive emissions as soon as practicable whenever

– in the opinion of the Trained Person [see (5)

- (6) below]

– applying wet suppression to the roadways is needed to minimize fugitive emissions . [s. NR 405.08, Wis. Adm. Code and Permits # 03

- RV

- 248

- R4 and
10

- MHR

- 184

- R1]

( 5 ) The permittee shall designate at least one Trained Person to monitor compliance with the emission limitation, the requirements of this section of the permit, and the measure s for preventing particulate matter from becoming airborne. [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis.
Stats. and 03

- RV

- 248

- R4]

( 6 ) The permittee shall ensure that the Trained Person identified in I.U.1.b.( 5 ) meets the training requireme nts of I.R.1.b.(5). [s. NR 407.09(1)(c)1.b., Wis. Adm. Code, s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission testing is required, the appropriate US EPA Method 9 or an a lternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(9)(a)1., Wis. Adm. Code]

(2) The permittee shall maintain daily records of: (a) the date and time roadway sweeping and/or roadway watering occur red; OR (b) the date and reasons why roadway sweeping and/or watering did not occur. [s. 285.65(3), Wis. Stats.; s. NR 415.04(1)(b), Wis. Adm.
Code and 03

- RV

- 248

- R4]

(3) The permittee shall retain copies of the Method 9 certification, other training or q ualifications, or written Department approval of the Trained Person identified in I.U.1.b.(4). [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 208

V. Stack S61, Process P61

– Machine Shop Welding

Stack S62, Process P62

– Rail Car Facility Welding S hop

Pollutant: 1 Particulate Matter Emissions (PM) and Particulate Matter Emissions less than 10 microns (PM 10 )

a. Limitations: (1) Best Available Control Technology (BACT): Emissions may not exceed: (a) 0.065 pounds PM per hour for P61 (b) 0.065 pounds PM10 per hour for P61 (c) 0.065 pounds PM per hour for P62 (d) 0.065 pounds PM 10 per hour for P62 [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The electrode use for EACH welding sho p may not exceed the following: (a) The total amount of electrodes used may not exceed 35,148 pounds in any 12 consecutive months. (b) The total amount of electrodes may not exceed 96 pounds per day on a monthly average. [s. NR 405.08(2), Wis. Adm. Code ; s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using electrodes consumption records and an emissio n factor of
16.32 lbs/1000 lbs of electrode consumed 154 or an alternate
emission factor approved by the Department in writing. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

( 2 ) Monthly welding records generated f r om the inventory system sha ll be used to de termine the average daily weld emissions to demonstrate compliance with the particulate
emission limit s in I.V.1.a.(1). [s. 285.65(3), Wis. Stats. and
03

- RV

- 248

- R4] (1) Reference Test Method for Particulate Matter Emissions: Whenever compliance emission t esting is required, test procedures in 40 CFR 60 and US EPA Method 5, including backhalf (Method 202) or an alternate method approved in writing by the Department, shall be used to demonstrate compliance [s. NR 439.06(1), Wis. Adm. Code]

(2) The permitt ee shall maintain the following records: (a) Monthly records of the amount of electrodes used, in pounds; (b) Records of the calculated monthly average, daily electrode use, in pounds per day, to show compliance with I.V.1.a.(2)(b); (b) Records of the total amount of electrodes used in any 12 consecutive month period, in pounds, to show compliance with I.V.1.a. (2)(a). [s. NR 439.04(1)(d), Wis. Adm. Code, ss. 285.65(3) and (10) and 03

- RV

- 248

- R4]

154 This emission factor is based on the worst case PM10 emission factor of 81.6 lbs/1000 lbs of electrode consumed from AP

42 Table 12.19

- 1, and a release factor of 20%.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 209

V

. Stack S61, Process P61

– Machine Shop Welding

– (CONTINUED)

Stack S62, Process P62

– Rail Car Facility Welding Shop

- (CONTINUED)

Pollutant: 2. Volatile Organic Compounds (VOC)

a. Limitations: (1) Best Available Control Technology (BACT): Emissions from EACH process may not exceed 0.23 pounds p er hour. [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4]

(2) The electrode use for EACH welding shop may not exceed the following: (a) The total amount of electrodes used may not exceed 35,148 p ounds in any 12 consecutive months. (b) The total amount of electrodes may not exceed 96 pounds per day on a monthly average. [s. NR 405.08(2), Wis. Adm. Code; s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats. and 03

- RV

- 248

- R4] b. Compliance Demonstr ation: c. Test Methods, Recordkeeping, and Monitoring: (1) The permittee shall determine the hourly emissions using electrodes consumption records and an emission factor of
57.5 pounds per 1000 pounds of electrodes consumed or an alternate emission fact or approved by the Department in writing. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4]

( 2 ) Monthly welding records generated f r om the inventory system will be used to determine the average daily weld ing emissions to demonstrate compliance with the parti culate
emission limit s in I.V.2.a.(1). [s. 285.65(3 ) , Wis. Stats. and
03

- RV

- 248

- R4 ] (1) Reference test Method for Volatile Organic Compound Emissions: Whenever compliance emission testing is required, the appropriate US EPA Method 25 or 18 or an
alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06(3)., Wis. Adm. Code]

(2) The permittee shall maintain the following records: (a) Monthly records of the amount of electrodes used, in pounds; (b) Rec ords of the calculated monthly average, daily electrode use, in pounds per day, to show compliance with I.V.2.a.(2)(b); (b) Records of the total amount of electrodes used in any 12 consecutive month period, in pounds, to show compliance with I.V.2.a. (2)( a). [s. NR 439.04(1)(d), Wis. Adm. Code, ss. 285.65(3) and (10) and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 210

V

. Stack S61, Process P61

– Machine Shop Welding

– (CONTINUED)

Stack S62, Process P62

– Rail Car Facility Welding Shop

- (CONTINUED)

Pollutant: 3. Visible Emissions

a. Limitations: (1) 20% opacity. [s. NR 431.05, Wis. Adm. Code; s. NR 405.09, Wis. Adm. Code; s. 285.65(3), Wis. Stats., s. 285.65(7), Wis. Stats.] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: (1) Complying with co nditions I.V. 1.b.(1) and ( 2 ) will also serve as compliance with the visible emission limits. [s. 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4] (1) Reference Test Method for Visible Emissions: Whenever compliance emission testing is required, US EPA Method 9 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [ s s. NR 439.06(9)(a)1. and NR 439.07(8)(f)

, Wis. Adm. Code]

(2) Compliance with conditions I.V. 1.c.(2), will serve as demonstrating compliance with the recordkeeping and monitoring requirements for visible emissions. [s. 285.65(3), Wis. Stats.; s. 285.65(10), Wis. Stats. and 03

- RV

- 248

- R4]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 211

V

. Stack S61, Process P61

– Machine Shop Welding

– (CONTINUED)

Stack S62, Process P62

– Rail Car Facility Weldi ng Shop

- (CONTINUED)

Pollutant: 4 . Hexavalent Chromium

a. Limitations: (1) * Emissions of hexavalent chromium from the Rail Car Facility Welding Shop (P62) may not exceed 0. 088 pounds in any 12 consecutive month period

. [s. NR 445.08(2)(c), Wis. Adm. Code]

(2) * Emissions of hexavalent chromium from the Machine Shop Welding Process (P61) may not exceed 1.23 pounds in any 12 consecutive month period. [s. NR 445.08(2)(c), Wis. Adm. Code] b. Compliance Demonstration: c. Test Methods, Recordkee ping, and Monitoring: (1) * The permittee shall determine hourly emissions using monthly electrode consumption records for the Rail Car Facility Welding Shop (P62) and an
emission factor of 0.176 lb s / 1000 lb s of
electrodes consumed 155 or and alternative
d epartment approved emission factor. [s. 285.65(3), Wis. Stats.]

(2) * For the Rail Car Facility Welding Shop P62, the permittee may not use more than 2500 pounds of electrodes containing chromium VI during any 12

- consecutive month period. [s. 285.65(3 ), Wis. Stats] (1) Reference Test Method for Hexavalent Chromium Emissions: Whenever compliance emission testing is required, US EPA Method 0013 or an alternate method approved in writing by the Department, shall be used to demonstrate compliance. [s. NR 439.06( 8 ) Wis. Adm. Code]

(2) * The permittee shall maintain monthly records of the (a) A mount of each type of electrodes used , in the Rail Car Facility Welding Shop (P62), in pounds per month, as re quired by condition I.V.1.c.(2); (b) Amount of eac h type of electrodes used in the Machine Shop Welding (P61), in pounds per month, as re quired by condition I.V.1.c.(2); (c) The total amount of hexavalent chromium containing electrodes that are used in the Machine Shop Welding (P61) each month , in pounds per month ; (d) The total amount of hexavalent chromium containing electrodes that are used in the Rail Car Facility Welding Shop (P62) each month, in pounds per month; (e) The total amount of hexavalent chromium containing electrodes used in the
Machine Shop Welding P61, during the previous 12

- consecutive month period, in pounds. (f) The total amount of hexavalent chromium containing electrodes used in the Rail Car Facility Welding Shop (P62) during the previous 12

- consecutive month period, in pounds. ( g ) The amount of hexavalent chromium emitted from the Machine Shop Welding (P61), each month

, calculated using the electrode consumption records and emission factor identified in condition I.V.4.b.(1) , in pounds per month; (h) The amount of hexavalent ch romium emitted from the Rail Car Facility Welding Shop (P62), each month, calculated using the electrode consumption records and emission factor identified in condition I.V.4.b.(1), in pounds; (i) The total amount of hexavalent chromium emitted from the M achine Shop Welding (P61), during the previous 12 consecutive month period, in pounds; and ( j ) The total amount of hexavalent chromium emitted from the Rail Car Facility Welding Shop ( P62 )

, during the previous 12 consecutive month period , in pounds

. [s. N R 439.04(1)(d) and ss. 285.65(3) and (10), Wis. Stats.]

155 Worst case hexav alent chromium emission factor from U.S. EPA Memo dated February 7, 2005, Regarding January 25, 2005 Meeting with the Shipbuilding Industry, Attachment 5. Summary of Welding Emission Factors.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 212

W. Process F71

– Temporary Bottom Ash Storage Pile

X. Process F72

– Temporary Fly Ash Storage Pile

Y. Process F73

– Bottom Ash Screening Plant

Pollutant: 1. Particulate Matter

– Fugitive Dust Emission s a. Limitations: (1) The permittee may not cause, allow, or permit any materials to be handled, transported, or stored without taking precautions to prevent particulate matter from becoming airborne. Nor may the permittee allow a structure, a parking l ot, or a road to be used, constructed, altered, repaired, sand blasted, or demolished without taking such precautions. [s. NR 415.04, Wis. Adm. Code, Permit # 10

- MHR

- 184

- R1] b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monitoring: ( 1) The permittee shall apply water, wet suppression spray, surface stabilizing agent and/or cover material(s) as needed to prevent particulate matter from becoming airborne. [s. NR 415.04(1)(b), Wis. Adm. Code, Permit # 10

- MHR

- 184

- R1]

(2) Ash shall be h auled offsite in enclosed tanker(s) or in trucks. The ash within any open bed of a truck shall be tarped when leaving the facility to prevent material from falling off and becoming airborne. [s. NR 415.04(1)(b), Wis. Adm. Code, Permit # 10

- MHR

- 184

- R1] (1 ) When applying suppressant for dust control, the permittee
shall record: (a) the date and time of the application, and (b) the area(s) at the facility where suppressant is applied. [s. NR 439.04(1)(d), Wis. Adm. Code, Permit # 10

- MHR

184

- R1]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 213

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 

### 1. Reporting

a. Conditions: (1) The permittee shall submit the results of monitoring required by this permit to the Department every 6 months. In lieu of submission of all monitoring resul ts, a summary of the monitoring results may be submitted to the Department. The summary shall include sufficient data for the Department to determine whether the source is in compliance with the applicable requirements to which the monitoring relates. The semiannual monitoring report may be consolidated with the quarterly excess emission report required under s. NR 439.09 when submission of both these reports is required.

(a) The time periods to be addressed by the submittal are: January 1 to June 30 and Ju ly 1 to December 31

(b) The report shall be submitted to the West Central Region Air Management Program, Wausau Service Center, 5301 Rib Mountain Drive, Wausau, WI 54401, and to Compliance Data

- Wisconsin, Air and Radiation Division, U.S. EPA, 77 West
Jac kson, Chicago, IL 60604 within 60 days after the end of each reporting period.

(c) All deviations from and violations of applicable requirements shall be clearly identified in the submittal. (d) Each subm ittal shall be certified by a responsible official a s to the truth, accuracy, and completeness of the report. [s. NR 439.03(1)(b), Wis.
Adm. Code and 03

- RV

- 248

- R4]

(2) The permittee shall submit certification of compliance with the requirements of this permit to the Department and U.S. EPA annually.

(a) The time period to be addressed by the report is the January 1 to December 31 period which precedes the report.

(b) The report shall be submitted to the West Central Region Air Management Program, Wausau Service Center, 5301 Rib Mountain Drive, Wausau, WI 544 01, and to Compliance Data

- Wisconsin, Air and Radiation Division, U.S. EPA, 77 West Jackson, Chicago, IL 60604 within 60 days after the end of each reporting period.

(c) The information included in the report shall comply with the requirements of Part II , Section N of this permit.

(d) Each report shall be certified by a responsible official as to the truth, accuracy, and completeness of the report. [s. N R 439.03(1)(c), Wis. Adm. Code and 03

- RV

- 248

- R4]

Condition Type: 

### 2. Quarterly Excess Emission Report s
a. Conditions: (1) The quarterly excess emission reports required by this permit shall: (a) Be submitted to the West Central Region Air Management Program, Wausau Service Center, 5301 Rib Mountain Drive, Wausau, WI 54401, within 30 days of the end of each calendar quarter, (b) Contain the following information: (i) The date and starting and ending times or duration of each period of excess emissions and the magnitude of the emissions; (ii) The periods of excess emissions that occur during startups, shu tdowns, sootblowing, control equipment malfunction, process malfunction, fuel problems, other known causes or for unknown causes. The report shall identify the cause of any
malfunction and the measures taken to reduce excess emissions. (iii) The date and starting and ending times of any period during which the monitoring system was inoperative for any reason or causes, including monitor malfunction or calibration, except zero and span checks. The report shall identify the repairs or adjustments made to t he system. (iv) The date and starting and ending time of a period during which the process being monitored was inoperative. (v) When no period of excess emissions occurred during the quarter and the monitoring system had no period of downtime, an excess emission report shall be filed stating such information. [ss. NR 439.09(10) and NR 439.09(10)(a), Wis. Adm. Code]

(2) Unless otherwise required by the department in writing, the permittee may submit a summary excess emission report in
lieu of the full e xcess emission reports required by this permit. The summary report shall be submitted on a form provided by the Department or in a format approved by the Department. [s. NR 439.09(10)(d), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 2 14

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 

### 3. Compliance Emission Testing

a. Conditions: (1) Whenever compliance emission testing is required by the Department: (a) Unless the department requires or approves the performance of a test at less than capacity, all complia nce emission tests shall be performed with the equipment operating at capacity or as close to capacity as practicable. (b) The reference test methods outlined in this permit shall be used unless an alternate, U.S. EPA approved, test method is approved by t he Department in writing. (c) The Department shall be notified in writing at least 20 business days in advance of a compliance emission test, to provid e the department an opportunity to have a representative present to witness the testing procedures. (d) T he notice required by (c) shall provide a test plan which includes, but need not be limited to, the following: (i) A description of the sampling equipment and the test methods and procedures to be used. (ii) A description of the process to be tested. (iii) A description of the process or operation variables which affect the air contaminant source’s emissions. (iv) The date and starting time of the test. (v) A description of the number and location of the sampling ports and sampling points including a sketch showing the distance of the sampling ports from the nearest upstream and downstream flow disturbances and the stack dimensions. (vi) A statement indicating the production rate and the operating conditions at which the test will be conducted. (e) The permi ttee shall notify the department of any modifications to the test plan at least 5 business days prior to the test. (f) In the event the permittee is unable to conduct the compliance emission test on the date specified in the test plan, due to unforeseeab le circumstances beyond the permittee’s control, the permittee shall notify the department at least 5 business days prior to the scheduled compliance emission test date and specify the date when the test is rescheduled. (e) Two copies of the emission test report shall be submitted to the West Central Region Air Management Program, Wausau Service Center, 5301 Rib Mountain Drive, Wausau, WI 54401 for evaluation within 60 days after completion of a compliance emission test. If requested the department may gra nt an extension of up to 30 days for test report submittal. The emission test report shall include, but need not be limited to the information outlined in s. NR 439.07(9), Wis. Adm. Code. (f) Compliance emission tests shall be conducted according to the p rocedures in s. NR 439.07(8), Wis. Adm. Code. [ss. NR 439.07(1), (2), (4), (8) and (9), Wis. Adm. Code]

(2) The following exceptions apply to compliance emission testing required under s. NR 439.075(2)(a) or (c): (a) The department may grant a written w aiver of a scheduled test if any of the following applies: (i) The direct stationary source associated with the emission point subject to the testing requirement will be ceasing operation within one year of a scheduled test. (ii) The most recently compl eted test results from a test conducted according to the methods and procedures specified in s. NR 439.07 for the direct stationary source demonstrate that the emissions of the air contaminant for which compliance emission testing is required are 50% or le ss of the applicable emission limitation. (iii) The direct stationary source associated with the emission point subject to the testing requirement has not operated more than 360 hours in the previous 12 month period prior to the scheduled test date. (b) The department may grant an extension of up to 180 days for compliance emission testing if the permittee requests an extension, in writing, and can demonstrate that a representative emissions test cannot be performed within the time frames specified in thi s permit. (c) All requests for waivers under paragraph (b) shall be submitted in writing for department review and approval at least 6 0 days prior to the required date. [s. NR 439.075(4), Wis. Stats]

(3) Nothing in this permit or in s. NR 439.075, Wis . Adm. Code may be construed as preventing the department from requiring the performance of additional compliance emission tests on affected sources or requiring tests for pollutants and sources other than those listed in s. NR 439.075, Wis. Adm. Code. [s . NR 439.075(1)(b), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 215

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 

### 4. Additional Reference Test Methods

a. Conditions: (1) Reference Test Method for Coal Sampling: Whenever coal sampling is required, it shall be performed according to ASTM
D2234

- 02, Standard Practice for Collection of a Gross Sample of Coal. [s. NR 439.08(1)(a), Wis. Adm. Code]

(2) Reference Test Method for Preparing Coal for Analysis: Whenever preparation of a coal sample for analysis is requ ired, it shall be performed according to ASTM D2013

- 01, Standard Method of Preparing Coal Samples for Analysis. [s. NR 439.08(1)(b), Wis. Adm. Code]

(3) Reference Test Method for the Sulfur Content in Coal: Whenever the sulfur content of a coal sample is r equired, it shall be determined according to ASTM D3177

- 02, Standard Test Methods for Total Sulfur in the Analysis Sample of Coal and Coke,
or ASTM D4239

- 04a, Standard Test Methods for Sulfur in the Analysis Sample of Coal and Coke using High Temperature
T ube Furnace Combustion Methods. [s. NR 439.08(1)(c), Wis. Adm. Code]

(4) Reference Test Method for the Heat Content in Coal: Whenever the heat content of a coal sample is required, it shall be determined according to ASTM D5865

- 04, Standard Test Methods fo r Gross Calorific Value of Coal and Coke. [s. NR 439.08(1)(d), Wis. Adm. Code]

(5) Reference Test Method for Ash Content in Coal: Whenever the ash content of a coal sample is required, it shall be determined according to ASTM D3174

- 04, Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal. [s. NR 439.08(1)(e), Wis. Adm. Code]

(6) Reference Test Method for Moisture Content in Coal: Whenever the moisture content of a coal sample is required, it shall be determined according to ASTM D3 173

- 02, Standard Test Method for Moisture in the Analysis Sample of Coal and Coke. [s. NR 439.08(1)(f), Wis. Adm. Code]

(7) Reference Test Method for Ultimate Analysis in Coal: Whenever the ultimate analysis of a coal sample is required, it shall
be determined according to ASTM D3176

- 89, Standard Practice for the Ultimate Analysis of Coal and Coke. [s. NR 439.08(1)(g), Wis. Adm. Code]

(8) Reference Test Method for Liquid Fossil Fuel Sampling: Whenever liquid fossil fuel sampling is required it shall be

pe rformed according to ASTM D4057

- 95, Standard Practice for Manual Sampling of Petroleum and Petroleum Products, or
ASTM D4177

- 95, Standard Practice for Automatic Sampling of Petroleum and Petroleum Products.

(9) Reference Test Method for Sulfur Content in Liquid Fossil Fuel: Whenever the sulfur content of a liquid fossil fuel sample is required, it shall be determined according to ASTM D129

- 00, Standard Test Method for Sulfur in Petroleum Products (General Bomb Method), ASTM D1552

- 03, Standard Test Method for Sulfur in Petroleum Products (High

- Temperature Method), or ASTM D4294

- 03, Standard Test Method for Sulfur in Petroleum Products by Energy

- Dispersive X

- ray Fluorescence Spectroscopy.

(10) Reference Test Method for Heat Content in Liquid Fossil Fuel: W henever the heat content of a liquid fossil fuel sample is required, it shall be determined according to ASTM D240

- 02, Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by a Bomb Calorimeter.

(11) Reference Test Method for Sampling an d Analysis of Fuels Other Than Coal and Liquid Fossil Fuel: Whenever sampling and analysis of a fuel other than coal and liquid fossil fuel is required, it shall be determined by methods and procedures approved, in writing, by the Department. [s. NR 439.08 (3), Wis. Adm. Code]

(12) Alternative methods than those listed in (1) through (11) above, may be used if approved, in writing, by the department. [s. NR 439.08, Wis. Adm. Code] Condition Type: 

### 5. Fugitive Dust Control Plan

a. Conditions: (1) The permittee shall maintain and follow a fugitive dust control plan for all potential sources of fugitive dust emissions. This plan shall be submitted to the Department upon request. A copy of the plan shall be kept at the facility. The departmen t

may reque st the permittee to review and amend the plan if necessary to maintain emissions in compliance with applicable emission limits. The plan shall identify the specific measures to be taken, when each measure is needed, and the frequency
with which each measu re will be taken. 156 [s. NR 415.03, Wis. Adm. Code]

156 For example, specific dust control measures could include: wa tering all roads hourly and amount of water used, use of spray bars including amount and rate of water applied, or use of oth er approved dust suppressants.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 216

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 6 

### . Control and Compliance Requirements for the Handling and Storage of Coal

a. Conditions: (1) Requirements for Outdoor Fugit ive Coal Dust Emissions: The permittee shall achieve compliance by doing all of the following: (a) Have the ability to control, in a timely manner, outdoor fugitive coal dust emissions in an effort to prevent emissions off the source property. 157 (b) Devel op and implement a plan to control outdoor fugitive coal dust emissions in an effort to prevent emissions off the source property. The plan shall include all of the following: (i) Identification of all sources of outdoor fugitive coal dust emissions from coal handling and coal storage piles on the source property; (ii) A description of the measures that can be taken to control, in a timely manner, outdoor fugitive coal dust emissions from all sources identified under (i) under the following conditions: a) routine operation, b) periods of high activity 158 , c) periods of increased probability of outdoor fugitive dust emissions 159 , and d) when equipment used to control outdoor fugitive coal dust emissions malfunctions. (c) Keep records of actions taken to contr ol outdoor fugitive coal dust emissions in accordance with s. NR 439.04(2), Wis.
Adm. Code. (d) Keep a copy of the plan and records of all actions taken at the facility for inspection upon request. [s. NR 445.10(2), Wis. Adm. Code]

(2) Requirements for N on

- fugitive Coal Dust Emissions to the Ambient Air: For any non

- fugitive source of coal dust emissions exhausted through a fabric filter to the ambient air, the permittee shall do one of the following: (a) Limit visible emissions from each source to 10% opacity, (b) Limit the quantity, concentration or duration of potential

- to

- emit emissions of respirable coal dust from all sources so that the ambient air concentration off the source property is less than 21.6 ug/m3 for any 24 hour period. (The permitte e may rely on information generated by either the EPA screening or refined dispersion model to demonstrate meeting this concentration requirement.) [s. NR 445.10(3), Wis. Adm. Code]

157 Examples of measures that would meet the ability to control requirement include active measures su ch as the application of water or chemical dust suppressants, passive measures such as the use of enclosed delivery or handling systems or solid fencing, or access to third

- parties to provide dust suppression, as appropriate. The intent of this section is to allow facilities that suppress dust using water to manage the amount of water applied to avoid potential boiler, handling, or other operational problems, as long as there is sufficient dust control so as not to cause excessive outdoor fugitive coal dus t emissions.

158 Examples of periods of high activity include periods when the daily handling of coal is much greater than usual, such as unloading a large number of coal shipments at the close of the shipping season

159 . Examples of periods of increased pr obability of fugitive coal dust emissions include periods or a combination of periods of drought, freezing weather, or forecasts of high winds exceeding 25 miles per hour.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 217

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 

### 7. Recordkeeping Requirements

a. Conditions: (1) Copies of all records required by this permit shall be retained by the permittee for a period of 5 years. [s, NR 439.04(2), Wis. Adm. Code]

(2) No person may deny information or access to records rel ating to emissions or any other records required to be kept to an authorized representative of the department. [s. NR 439.05(1), Wis. Adm. Code] Condition Type: 

### 8 . Clean Air Interstate Rule (CAIR) / Cross

- State Air Pollution Rule (CSAPR)

a. Conditions : (1) The permittee shall comply with the requirements of the Clean Air Interstate Rule (CAIR) as applicable. See Part III. 160 [40 CFR part 97] ; OR

(2) When in effect, t he permittee shall comply with the requirements of the Cross

- State Interstate Rule (CSAPR) as applicable.

160 On July 11, 2008, t he U.S. Circuit Court of Appeals for the District of Columbia Circuit made a decision to vacate CAIR “in its entirety” and remanded U.S. EPA to promulgate a new rule consistent with the Court’s decision. On December 23, 2008, the U.S. Court of Appeals for the District of Columbia Circuit made a decision to remand th e case without vacatur so that U.S. EPA may remedy CAIR’s flaws in accordance with their July 11, 2008 opinion in this case. As a result CAIR remains in effect unti l it is replaced by a rule consistent with the U.S. Circuit Court of Appeals’ July 11, 2008 opinion. On July 6, 2011, the US EPA
finalized the Cross

- State Air Pollution Rule (CSAPR), effective January 1, 2012, to replace the 2005 Clean Air Interstate Rule (CAIR). The CSAPR was scheduled to takes affect January 1, 2012, with CAIR being implemen ted through the 2011 compliance periods and then replaced by CSAPR. However, the US Court of Appeals for the District of Columbia Circuit issued a ruling filed on December 30, 2011 to stay CSAPR pending judicial review. In the interim CAIR continues to a pply. U.S. EPA finalized a supplemental rulemaking on December 15, 2011 requiring five states, including Wisconsin to make summertime NOx reductions under the CSAPR ozone season control program. On January 26, 2012, US EPA signed a notice to be published in the Federal Register, indicating that the Agency will not require compliance with the supplemental CSAPR rule while the stay is in affect. On August 21, 2012 the U.S. Court of Appeals for the District of Columbia Circuit made a decisi on to vacate CSAP R and the CSAPR FIP and remanded the case to U.S. EPA for action consistent with the decision. The court directed U.S. EPA to continue administering CAIR pending the promulgation of a valid replacement.

It is uncertain at this time what changes, if any, might be made to CSAPR and when the rule will go into affect. In the interim, Wisconsin Public Service Corporation

– Weston (ORIS/Facility Code 4078) would be subject to the requirements of CAIR, as applicable, as currently promulgated by U.S. EPA. Under the current CAIR requirements, boilers B01, B02, B03 and B04 (identified by the facility as Units 1, 2, 3, and 4 respectively) and processes P32A and P32 (identified by the facility as U nits 32A and 32B respectively) at the Wisconsin Public Service Corpor ation Weston Site (FID #: 737009020, ORIS/Facility Code: 4078) is subject to: the CAIR Nitrogen Oxide

– Annual Program, the CAIR Sulfur Dioxide Program and the CAIR Nitrogen
Oxide

– Ozone Season Program. Under the rule as currently written, the permitte e is required to comply with the CAIR requirements as outlined in the CAIR Permit Application (for sources subject to CAIR FIP

– See Part III of this permit) and 40 CFR 97.121, 97.122, 97.221, 97.222, 97.321 and 97.322.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 218

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 9



### . Compliance Assurance Monitoring (CAM) Requirements

a. Conditions: (1) Compliance Assurance Monitoring (CAM) Requirements: Boilers B01, B02, B03, and B04 and processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P34, P35A, P35B, P36A, P36B, P37A, P30, P41, P42, P43, P45, P49, and P50 are each pollutant

- specific emissions unit for particulate matter emissions subject to the CAM requirements of Part 64 CFR. As such the permittee shall comply with the provisions of the associated CAM plans for the pollutant

- specific emissions from boilers B01, B02, B03, and B04 and processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P34, P35A, P35B, P36A, P36B, P37A, P30, P4 1, P42, P43, P45, P49, and P50, included in this permit as Part IV and these processes are subject to the CAM requirements of 40 CFT Part 64 as follows: [s. 285.65(13), Wis. Stats. 40 CFR Parts 64.2, 64.3, and 64.6(c)(3)] (a) The permittee shall monitor th e indicators identified in each CAM plan in Part IV of this permit as indicators of emission control equipment performance for each associated control device controlling the pollutant

- specific emissions from each respective process, whenever the process is operating. [40 CFR parts 64.3(a)(1) and (3), 64.6(c)(1)(i), and 64.7(a)] (b) The permittee shall use the means or devices to measure the above indicators as identified in each CAM plan in Part IV, whenever the identified process is operating. [40 CFR pa rts 64.6(c)(1)(ii) and 64.7(c)] (c) The permittee shall operate the indicator monitoring devices as identified in each CAM plan in Part IV. [40 CFR parts 64.3(b), 64.6(c)(1)(iii), and 64.7(b)] (d) An exceedance or excursion shall be defined for each of the indicators as identified in each CAM plan in Part IV. The permittee shall notify the Department in writing prior to reestablishing the exceedance or excursion value for any of the indicators. [40 CFR parts 64.6(c)(2)] (e) The permittee shall establi sh that the indicator ranges identified in each of the CAM plans in Part IV are representative of a level where the associated control equipment is operating in compliance with the respective pollutant

- specific emission limitations in Part I of this permit . [40 CFR Parts 64.4(d) and 64.6(c)(2)] (f) The indicator ranges or the procedures for establishing indicator ranges identified in each of the CAM plans in Part IV may rely on engineering assessments and other data, provided that the permittee demonstrat es that factors specific to the type of monitoring, control device, or pollutant

- specific emissions unit make compliance or performance testing unnecessary to establish indicator ranges at levels that satisfy the criteria in 40 CFR Part 64.3. [40 CFR Part 64.4(d)(2)] (g) Each of the CAM plans in Part IV shall specify the level at which an excursion or exceedance will be deemed to occur, including the appropriate averaging period associated with such exceedance or excursion. [40 CFR Part 64.6(c)(2)] (h) For defining an excursion from an indicator range or designated condition, each of the CAM plans in Part IV may either include the specific value(s) or condition(s) at which an excursion shall occur, or the specific procedures that will be used to establis h that value or condition. If the latter, the permittee shall notify the department in writing prior to any establishment or reestablishment of the value. [40 CFR Part 64.6(c)(2)] (i) Any performance test(s) necessary under I.XXX.9.a.(1)(e) shall be con ducted in accordance with I.XXX.3.a. Such data may be supplemented, if desired, by engineering assessments and manufacturer’s recommendations, to justify the indicator ranges (or, if applicable, the procedures for establishing such indicator ranges). Emi ssion testing is not required to be conducted over the entire indicator range or range of potential emissions. [40 CFR Part 64.4(c)]

{Continued On Next Page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 219

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 9



### . Compliance As surance Monitoring (CAM) Requirements {CONTINUED...}

a. Conditions: {...Continued from Previous Page...}

(2) CAM

– Monitoring Operation: (a) Commencement of Operation: The permittee shall commence operation of the monitoring identified as CAM in each
C AM plan in Part IV upon issuance of this permit . [40 CFR Part 64.7(a)] (b) Proper Maintenance: At all times the permittee shall maintain the monitoring equipment required by I.XXX.9.a.(1), including but not limited to, maintaining necessary parts for ro utine repairs of the monitoring equipment. (c) Continued Operation: Except for, as applicable, monitoring malfunctions, associated repairs, and required quality assurance or control activities (including calibration checks and required zero and span adju stments), the permittee shall conduct all monitoring collecting data at the required intervals, at all times the process is operating. Data recorded durin g monitoring malfunctions, associated repairs, and required quality assurance or control activities s hall not be used for purposes of this requirement, including data averages and calculations, or fulfilling a minimum data availability requirement. The permittee shall use all data collected during all other periods in assessing the operation of the contr ol device and associated control system. A monitoring malfunction is any sudden, infrequent, not reasonably preventable failure of the monitoring to provide valid data. Monitoring failures that are caused in part by poor maintenance or careless operation are not malfunctions. (d) Response to Excursions or Exceedances: (i) Upon detecting an excursion or exceedance, the permittee shall restore operation of the associated process (including the control device and associated capture system) to its normal or u sual manner of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions

. The response shall include minimizing the period of any startup, shutdown or malfunction and taking any necessary co rrective actions to restore normal operation and prevent the likely recurrence of the cause of an excursion or exceedance (other than those caused by excused startup or shutdown conditions). Such actions may include initial inspection and evaluation,

reco rding that operations returned to normal without operator action, or any necessary follow

- up actions to return operation to within the indicator range, designated condition, or below the applicable emission limitation or standard as applicable. (ii )
Deter mination of whether the permittee has used acceptable procedures in response to an excursion or exceedance will be based on information available, which may include but is not limited to, monitoring results, review of operation and maintenance procedures a nd records, and inspection of the control device, associated capture system, and the process. (e) Documentation of Need for Improved Monitoring: If the permittee identifies a failure to achieve compliance with the associated pollutant specific emission lim itations outlined in Part I for which the CAM requirements outlined in I.XXX.9.a.(1) did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the e xisting indicator ranges, the permittee shall promptly notify the Department, and if necessary, submit a proposed revision to this operation permit to address the necessary monitoring changes

. Such a revision may include, but is not limited to, reestablis hing indicator ranges or designated conditions, modifying the frequency of conducting monitoring and collecting data, or the monitoring of additional parameters. [40 CFR Part 64.7]

(3) CAM

- Reporting and Recordkeeping Requirements : (a) General Reporting Requirements: (i) The permittee shall include the CAM information in the compliance and monitoring reports required by I.XXX.1.a. (ii) The compliance and monitoring reports shall include, at a minimum, the information required by conditions I.XXX.1.a.(1 ) and (2) and the following, as applicable: 1) summary information on the number, duration and cause (including unknown cause, if applicable) of excursions or exceedances, as applicable, and the corrective actions taken; 2) summary information on the num ber, duration and cause (including unknown cause, if applicable) for monitor downtime incidents (other than downtime associated with zero and span or other daily calibration checks, if applicable); and 3) a description of the actions taken t o implement a QIP during the reporting period as specified in I.XXX.9.a.(1). Upon completion of a QIP, the permittee shall include in the next summary report documentation that the implementation of the plan has been completed and reduced the
likelihood of similar leve ls of excursions or exceedances occurring. (b) General Recordkeeping Requirements: (i) The permittee shall maintain records of monitoring data, monitoring performance data, corrective actions taken, any writt en QIP required by I.XXX.9.a.(1) and any activit ies undertaken to implement a QIP, and other supporting information. (ii) Instead of paper records, the permittee may maintain records on alternative media, such as microfilm, computer files, magnetic tape disks, or microfiche, provided that the use of suc h alternative media allows for expeditious inspection and review, and does not conflict with other applicable recordkeeping requirements. [40 CFR §64.9]

{...Continued on Next Page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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– Final Permit page 220

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 9



### . Compliance Assurance Monitoring (CAM) Requirements {CONTINUED...}

a. Conditions: {...Continued from Previous Page...}

(4) CAM

- Quality Improvement Plan (QIP) Requirements : (a) Based on the results of a determination made under I.XXX.9.a.(2)(d)(ii), the permittee shall develop and implement a QIP if the required monitoring shows an accumulations of exceedances or excursions of the value (or range) established pursuant to I.XXX.9.a.(1)(d) exceeding 5 percent duration of the associated process’s operating t ime in any calendar quarter. (b) Elements of a QIP: (i) The permittee shall maintain the QIP in writing and have it available for inspection. (ii) The plan initially shall include procedures for evaluating the control performance problems and, based on t he results of the evaluation procedures, the permittee shall modify the plan to include procedures for conducting one or of the following actions , as appropriate: (1) improved preventive maintenance practices, (2) process operation changes, (3) appropriat e improvements to control methods, (4) other steps appropriate to correct control performance, (5) more frequent or improved monitoring (only i n conjunction with one or more of steps (1) through (4)). (c) If a QIP is required, the permittee shall develop and implement a QIP as expeditiously as practicable and shall notify the Department if the period of completing the improvements contained in the QIP exceeds 180 days from the date on which the need to implement the QIP was determined. (d) Following implem entation of a QIP, upon any subsequent determination pursuant to I.XXX.9.a.(2)(d)(ii) the Department may require that the permittee make reasonable changes to the QIP, if the QIP is found to have: (i) failed to address the cau se of the control device perfo rmance problems; or (ii) failed to provide adequate procedures for correcting control device performance problems as expeditiously as practicable in accordance with good air pollution control practices for minimizing
emissions. (e) Implementation of a QIP shall not excuse the permittee from compliance with any existing emission limitation or standard, or any existing monitoring, testing, reporting or recordkeeping requirement that applies under federal, state, or local law, or any other applicable requireme nt of the Clean Air Act. [40 CFR Part 64.8] Condition Type: 10 

### . Control of Mercury Emissions from Major Utilities *

a. Conditions: (1A) The permittee is exempt from the emissions limitations and other requirements in ss. NR 446, Wis. Adm. Code,
Sub chapters II and III, as outlined in sections I.XXX.10

. and I.XXX.11. of this permit, if the source is regulated 161 for mercury emissions under 40 CFR Part 63 Subpart UUUUU. [s. 285.27(2)(d), Wis. Stats.]

(1) * Mercury Emission Limitations for Major Utili ties: (a) Beginning January 1, 2010, no owner or operator of a major utility may (Wisconsin Public Service Corporation) 162 cause, allow or permit mercury emissions that exceed 60% of the mercury emissions baseline (584 pounds per year) 163 determined by
the department under s. NR 446.06, Wis. Adm. Code. [s. NR 446.05, Wis. Adm. Code] (b) Baseline mercury emissions are as follows: (i) Weston 1 (B01): 43 pounds per year (ii) Weston 2 (B02): 67 pounds per year (iii) Weston 3 (B03): 246 pounds per year (i v) Pulliam 3: 14 pounds per year (v) Pulliam 4: 16 pounds per year (vi) Pulliam 5: 29 pounds per year (vii) Pulliam 6: 42 pounds per year (viii) Pulliam 7: 48 pounds per year (ix) Pulliam 8: 80 pounds per year (x) Total for Wisconsin Public Se rvice Corporation: 584 pounds per year [s. NR 446.06(4), Wis. Adm. Code] {...Continued on Next Page...}

161 Sources are considered regulated b y 40 CFR Part 63 Subpart UUUUU as of the date that the source must comply with the applicable requirements. For existing sources, this date is April 16, 2015 (see 40 CFR s.63.9984(b)).

162 Wisconsin Public Service Corporation is the owner and operator of a major utility as defined in s. NR 446.02(6m). The utility’s coal

- fired units covered by s. NR 446.05 include Pulliam Units 3 through 8 and Weston Units 1 through 3.

163 The department provided written notification of the baseline mercury emissions for Wisco nsin Public Service Corporation in a letter from Kevin Kessler, Air Management Bureau Director, dated 12/13/2006.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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– Final Permit page 221

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 10 

### . Control of Mercury Emissions from Major Utilities *

- {CONTINUED}

a. Con ditions:

{...Continued from Previous Page...}

(2) * Annual Mercury Emissions Determination and Reporting: (a) For calendar years 2010 through 2014, the permittee shall determine and report to the department by March 1, annual mercury emissions for each u nit using the following formula:

Annual Mercury Emissions = Fuel Use x Mercury Content of Fuel x Reduction of Mercury Prior to its Release to the Atmosphere

Where: (i) Fuel use is the amount of fuel combusted in the combustion unit, as measured by the p rocedures in Appendices A, B, C and F of 40 CFR part 75. The total amount of fuel combusted in mmBtus may be apportioned to individual fuels, using consumption and delivery records for the fuels. (ii) Mercury content of the fuel is determined according t o ASTM D3984

- 01 or an equivalent method approved by the department, following the procedures in s. NR 446.07(1), (2), and (3). (iii) Reduction of mercury is calculated through source performance tests which follow the procedures listed below. A value
of one is assumed for natural gas fired combustion units that are exempt from performance testing under paragraph (f) below. a) The source performance test shall be conducted according to Method 101A in Appendix B of 40 CFR part 61, Method 29 in Appendix A of 40 CFR part 60, Method 30A or 30B in Appendix A of 40 CFR part 60, or ASTM D6784

- 02. b) A sample of fuel burned during the test shall be analyzed for mercury content, using ASTM D3684

- 01, or an equivalent method approved by the department. During each of the 3 runs of the performance test, a separate sample of fuel being burned during the run shall be collected and analyzed. c) During the source performance testing, the consumption of fuel shall be monitored and recorded. d) The permittee shall submit to the department the information obtained in a) through c) above, and the calculations for the percent removal efficiency of mercury. (iv) The department may require that more than one source performance test be conducted if a single test is determined not to be representative of conditions at the combustion unit. (b) The department may require the permittee to use other methods of determining the annual mercury emissions. (c) The permittee may request that alternative methods for determining annual mercur y emissions be approved by the department. (d) All units with an electrical generating capacity equal to or greater than200 MW, and all units that undergo process chan ges or change control equipment after January 1, 2006, shall have source performance tes ts conducted during calendar years 2010
and 2013. (e) The permittee shall use the results of the most recently conducted source performance test for calculating the reduction efficiency under paragraph (a)(iii) above. (f) Combustion units that exclusivel y combust natural gas are not subject to the source performance testing requirements of
this condition. [s. NR 446.08, Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

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– Final Permit page 222

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fir ed Electric Generating Units *

a. Conditions: (1A) The permittee is exempt from the emissions limitations and other requirements in ss. NR 446, Wis. Adm. Code, Subchapters II and III, as outlined in sections I.XXX.10

. and I.XXX.11. of this permit, if the source is regulated 164 for mercury emissions under 40 CFR Part 63 Subpart UUUUU. [s. 285.27(2)(d), Wis. Stats.]

(1) * Mercury Emission Limitations for Large Coal

- fired Electric Generating Units (EGUs): 165 (a) Beginning January 1, 2015 the permittee s hall comply with one of the following emission limitations: (i) Achieve a minimum of 90% mercury emissions reduction as measured from the mercury content of the fuel combusted; OR (ii) Limit mercury emissions annually to 0.0080 pounds per gigawatt

- hour (l bs/GWh) of electricity produced. (b) The permittee shall achieve compliance with these limitations by either of the following methods: (i) Unit

- by

- unit compliance: Demonstrate that the mercury emissions from each coal

- fired EGU meet either of the

mercur y emission limits in paragraph (a) using the measurement methods and calculation procedures in condition I.XXX.11.a.(4); OR (ii) Unit Averaging: Demonstrate that the sum of the mercury emissions from all coal

- fired EGUs subject to the mercury
emission li mits in paragraph (a) does not exceed the sum of the annual allowable mercury emissions for the coal

- fired EGUs using the measurement methods and calculation procedures in condition I.XXX.11.a.(4). [s. NR 446.13, Wis. Adm. Code]

(2) * Multipollutant Red uction Alternative for Coal

- fired Electrical Generating Units (EGUs): (a) The permittee may elect to meet the emission limitations below instead of the emission limitations in condition (1) abov e. The following annual emission limitations for NOx, SO2, a nd mercury apply to each unit for which the owner or operator
makes an election under this condition. (i) For NOx, beginning January 1, 2015: 0.07 pounds per mmBtu of heat input. (ii) For SO2, beginning January 1, 2015: 0.10 pounds per mmBtu of heat input. (iii) For mercury emissions, all of the following: a) Beginning January 1, 2015 and to December 31, 2017, a 70% mercury emission reduction as measured from the mercury content of the fuel combusted or 0.0190 pounds per gigawatt

- hour (lbs/GWh) b) Beginning January 1, 2018 and to December 31, 2020, an 80% mercury emission reduction as measured from the mercury content of the fuel combusted or 0.0130 pounds per gigawatt

- hour (lbs/GWh) c) Beginning January 1, 2021, a 90% mercury emission reduction as measured from the mercury content of fuel combusted or 0.0080 pounds per gigawatt

- hour (lbs/GWh) (b) The permittee shall achieve compliance with these limitations by either of the following methods: (i) Unit

- by

- unit compliance: Demonstrating that the m ercury, NOx and SO2 emissions from each coal

- fired EGU meet the applicable emission limitations using the measurement methods and calculation procedures in condition I.XXX.11.a.(4). (ii) Unit averaging: Demonstrating for each pollutant, the sum of the em issions from all coal

- fired EGUs subject to these emission limitations do not exceed the sum of the annual allowable mercury, NOx or SO2 emissions for the coal

- fired EGUs using the measurement methods and calculation procedures in condition I.XXX.11.a.(4). (c) The permittee shall identify each EGU for which they are electing this alternative in the submittal required by paragrap h (3) below. [ss. NR 446.14 and NR 446.17(2), Wis. Adm. Code]

(3) * Emission Limitation Election: (a) No later than December 31, 2010 the permittee shall identify for each affected EGU, the applicable mercury emission limitations in this section including an elections made under condition (2) above. This identification shall be submitted to the department in writing. (b) With in 90 days after the receipt of the submittal required by (a), the department shall notify the permittee in writing of the emission limitation designations for each affected coal

- fired EGU. (c) Designations by the department under paragraph (b) shall esta blish the mercury emission limitation requirements. [s. NR 446.17(2), Wis. Adm. Code]

164 Sources are considered regulated by 40 CFR Part 63 Subpart UUUUU as of the date that the source must comply with the applicable requirements . For existing sources, this date is April 16, 2015 (see 40 CFR s.63.9984(b)).

165 A large coal

- fired EGU means an electric generating unit serving a generator with nameplate capacity 150 megawatts and greater, pursuant to s. NR 446.10(7), Wis. Adm. Code.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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– Final Permit page 223

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fired Electric Generating Units * {CONTINUED}

a. Conditions: (4) * Emission Determination and Compliance Demonstration: (a) Monitoring Requirements: For each affected coal

- fired EGU, the permittee shall monitor emissions, heat input, electricity generation and process thermal energy, as required to demonstrate compliance, according to the following methods and specifications: [s. NR 446.18(1), Wis. Adm. Code] (i) For NOx and SO2, hourly mass emissions according to 40 CFR part 75 and 40 CFR part 75, Appendices A to I, incorporated by reference in ss. NR 484.03(7) and 484.04 (27) respectively. (ii) For mercury, hourly mass emissions using continuous emission monitoring. By December 31, 2013, the department shall promulgate rules that specify the requirements for continuous emission monitoring for purposes of this paragraph. (Note: On February 8, 2008, the U.S. District Court of Appeals for the D.C. Circuit vacated rules the department had intended to rely on related to continuous emission monitoring for mercury emissions. (See New Jersey, et. al. v. Environmental Protection Agency, D.C. Ct. App. No 05

- 1097, February 8, 2008.).) (iii) For heat input flow rate and hourly heat input, according to 40 CFR part 75 and 40 CFR part 75, Appendices A to I, incorporated by reference in ss. NR 484.03(7 ) and 484.04(27) respectively. (iv) For gross electric output, hourly megawatt

- hours using continuous monitoring. (v) For process thermal energy input, hourly mmBtus delivered to the process using continuous monitoring.

(b) Determining Annual Act ual Emissions: For each affected coal

- fired EGU, the permittee shall determine annual mass of actual emissions for each pollutant as the sum of monitored emissions according to Equation 1. 

# ∑

= 

### = n

1 i monitored actual 

### P P Equation 1

where:
P actual is the mass of mercury, NOx or SO2 emitted during the compliance year
P monitored is the mass of mercury, NOx or SO2 emissions monitored and determined for each hour i the EG U is operated during the compliance year n is the number of hours the EGU is operating during the compliance year [s. NR 446.18(2), Wis. Adm. Code]

(c) Determining Annual Fuel Mercury Content: For each affected coal

- fired EGU, the permittee shall det ermine the annual mass of mercury contained in all combusted fuels, as required to demonstrate compliance, according to the following procedures: [s. NR 446.18(3), Wis. Adm. Code] (i) Calculate the mass of mercury contained in each fuel for each month , according to Equation 2, as the mercury concentration in fuel combusted each month as determined following the procedures in s. NR 446.07 (1), (2) and (3) according to solid and non

- solid types of fuel, multiplied by the amount of fuel, in mmBtu, combust ed each month as determined following the procedures in s. NR 446.07(4).

fm fm fm 

### C Hg HI Hg Fuel × = Equation 2

where: Fuel Hg fm is the mass of mercury contained in fuel f, in month m
HI fm is the heat input of the combusted fuel f, in month m Hg C fm is the mercury concentration for fuel f, in month m

(ii) Calculate the annual mass of mercury, according to Equation 3, as the sum of mercury contained in all fuels
combusted for all mo nths during the compliance year.

m 12

1 m f

1 i i annual 

### Hg Fuel Hg Fuel 

# ∑ ∑

= = 

###        

= Equation 3

where: Fuel Hg annual is the mass amount of mercury contained in all fuels combusted during the compliance year Fuel Hg i is t he mercury mass content for fuel i, combusted in month m, during the compliance year determined in par. (i) f is number of fuels combusted during the compliance month {...Continued On Next Page...}FID 737009020; Permit No. 737009020

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– Final Permit page 224

XXX. 

### Conditions Applicable to the Entire Facility

Con dition Type: 11



### . Control of Mercury Emissions from Coal

- Fired Electric Generating Units * {CONTINUED}
a. Conditions: (4) * Emission Determination and Compliance Demonstration: {... Continued from Previous Page...}

(d) Determining Annual Gross Ou tput: For each affected coal

- fired EGU, the permittee shall determine the annual gross energy output in gigawatt

- hours, as required to demonstrate compliance, according to the following procedures: (i) Calculate the annual gross electric output in giga watt

- hours, according to Equation 4, as the sum of gross electric output measured in megawatt

- hours for each hour the EGU is operating.



### 1,000 MWh

E n

1 i i

GWh 

# ∑

= 

### = Equ ation 4

where:
E GWh is the total annual gross electric output in GWh
MWh i is the gross electric output in MWh for each hour i the EGU operated during the compliance year 1,000 is the factor to convert MWh to GWh n is the number of hours the EGU operate d during the compliance year (ii) Calculate the annual amount of useful thermal energy in mmBtu, according to Equation 5, as the sum of the process thermal energy input for each hour the EGU is operated multiplied by the process energy efficiency.



# ∑

= 

###      

× = n

1

i i annual 

### 100 PEE PTEI UTE Equation 5

where:
UTE annual is the annual amount of thermal energy, in mmBtu, utilized in the cogeneration process
PTEI i is the amount of thermal energy input, in mm Btu, made available to the cogeneration process for each hour i the

EGU operated during the compliance year PEE is the process energy efficiency, expressed as a percent, measured for the EGU. A value of 50% may be assumed.
n is the number of hours the un it operated during the year of compliance (iii) Calculate the annual gross energy output in mmBtu, according to Equation 6, as the sum of the annual gross electric output and the annual applied thermal energy converted to electric output.



### 3,413 UTE E GEO annual GWh GWh 

### + = Equation 6

where:
GEO GWh is the total annual gross energy output in GWh
E GWh is the total annual gross electric output in GWh determined in par. (a)
UTE annual is the total annual useful thermal energy in mmBtu determined in par. (b) 3,413 is the factor to convert thermal energy in mmBtu to GWh [s. NR 446.18(4), Wis. Adm. Code]

{...Continued on Next Page...}FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

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– Final Permit page 225

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fired Electric Generating Units * {CONTINUED}
a. Conditions: (4) * Emission Determination and Compliance Demonstration: {... Continued from Previous Page...}

(e) Determining Annual Allowable Emiss ions: . Except as provided in s. NR 446.185, for each affected coal

- fired EGU, the permittee shall, determine annual allowable emissions, as required to demonstrate compliance, according to the following procedures: (i) When achieving compliance on a un it

- by

- unit basis, use one of the following equations as applicable: a) For a percent reduction mercury emission limitation, Equation 7.



### CE) Hg

- (1 Hg Fuel Hg annual allowable 

### × = Equation 7

where: Hg allowable is the mass of mercury emissions allowed for the compliance year Fuel Hg annual is the mass of mercury in fuel combusted during the compliance year as determined in par. (c)(ii). Hg CE is the applicable requirement for percent mercury emission reduction divided by 100

. b) For a mercury output emission limitation, Equation 8.

output GWh allowable 

### EL GEO Hg × = Equation 8

where: Hg allowable is the mass of mercury emissions in pounds allowed for the compliance year
GEO GWh is the annual gross energy output during the compliance year as determined in sub. (4)(c)
EL output is the applicable mercury output based emission limitation in pounds per GWh c) For a NOx or SO2 emission limitation, Equation 9.

p h

1 i i allowable 

### EL HI P × = 

# ∑

= Equation 9

where:
P allowabl e is the mass of NOx or SO2 emissions allowed for the compliance year HI is the amount of fuel, in mmBtu combusted each hour i, during the comp liance year h is the number of hours fuel is combusted during the compliance year
EL p is the applicable emission limitation of s. NR 446.14(1) for NOx or SO2 (ii) When achieving compliance using unit averaging as allowed under s. NR 446.13(2)(b) or 44 6.14(2)(b), according to Equation 10:



# ∑

= 

### = n

1 u u allowable 

### P P Averaging Unit Equation 10

where: Unit Averaging P allowable is the mass of mercury, NOx, or SO2 emissions allowed for each pollutant determined in par. (i)

for each EGU participating in emissions averaging during the compliance year
P
u is the lowest annual allowable mass of mercury, NOx or SO2 emissions allowed for the compliance year for each

EGU as determined under par. (i) or applicable under any other enforceable state or federal requirement for each EGU participating in emissions averaging during the compliance year n is the number of EGUs participating in emissions averaging [s. NR 446.18(5), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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– Final Permit page 226

XXX. 

### Conditions Appl icable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fired Electric Generating Units * {CONTINUED}
a. Conditions: (5) * Annual Compliance Report: Beginning March 1, 2015 and on or before March 1 of every year thereafter, the permittee shall prepare and submit a compliance report for the affected EGUs, for the previous year. The report shall include all of t he following: [s. NR 446.17(1), Wis. Adm. Code] (a) The actual mercury emissions and, if subject to NO x and SO2 emission limitations under condition (2), the actual NOx and
SO2 emissions from each affected coal

- fired EGU for the previous year following the methodology in condition I.XXX.11.a.(4). (b) The designated emission limitations for each affected c oal

- fire EGU as identified in condition (3)(c). (c) The amount of any early reduction emission credits certified under condition I.XXX.11.a.(6) and currently held by the permittee in pounds, and the amount of certified early reduction emissions being surr endered. (d) A comparison of annual actual emissions (par. (a)) minus any surrendered early emission reduction credits (par (c)), to the designated annual allowable emission limitations identified in paragraph (b), for each affected coal

- fired EGU.

(6) * Early Mercury Emission Reduction Credits: [s. NR 446.15, Wis. Adm. Code] (a) The permittee may request that the department certify excess mercury emission reductions by affected coal

- fired EGUs, as early emission reduction credits. (b) The departme nt may only certify emission reductions that meet either of the following criteria as early emission reduction
credits: (i) The department may only certify emission reductions achieved by major utilities in calendar years 2010 to 2014 in
excess of the emi ssion limitations in condition I.XXX.10.a.(1). (ii) Emission reductions achieved in calendar years 2015 to 2020 from coal

- fired EGUs subject to the emission limitations in condition I.XXX.11.a.(2) in excess of the applicable emission limitation in I.XXX.1 1.a.(2)(a)(iii)a) or b). (c) Beginning March 1, 2011, and on or before March 1, 2021, the permittee may request in the annual compliance required by condition (5), that the department certify excess mercury reductions from the previous calendar year as ea rly emission reduction credits. The department shall provide written notice within 60 days of the receipt of a request approving or denyi ng the early emission reduction credit request. (d) The department shall certify the emission reductions, in terms of pounds of mercury emissions reduced, as early emission reduction credits if the permittee demonstrate to the department that the reductions are actual mercury emission reductions t hat are not required under any stat or federal law, court order or air perm it condition. (e) Certified mercury emission reduction credits may be used by the permittee of a coal

- fired EGU to meet the annual mercury emission limitations in I.XXX.11.a.(2)(a)(iii) provided the amount of certified mercury emission reduction credits s urrendered does not exceed 10% of the applicable emission limitation, in pounds. (f) The department will maintain an ongoing record of the early mercury emission reduction credits certified and surrendered to achieve compliance with the emission limitatio ns in condition I.XXX.11.a.(2)

(7) * Electric Reliability Compliance Extension: [s. NR 446.16, Wis. Adm. Code] (a) The permittee may request an extension to achieve compliance with the applicable mercury, NOx or SO2 emission
limitations in condition s I.XXX.11.a.(1) and (2). (b) The department may grant an extension if, in consultation with the public service commission, the department determines that the information submitted by the permittee supports a conclusion that without the extension a major electrical supply disruption is likely to occur. (c) An extension may not be granted beyond January 1, 2017. (d) The permittee shall submit a written request for extension to the department at the time the emission limitation electio n required by condit ion I.XXX.11.a.(3) is provided. (e) The request shall provide sufficient information concerning the conditions on which the request is based to demonstrate to the department’s satisfaction that an extension is warranted. In addition, the request shall in clude all of the following: (i) The proposed control equipment installation schedule for all affected coal

- fired EGUs. (ii) The additional period of time being requested. (iii) The alternative annual emission limitations for mercury, NOx or SO2 that wil l be achieved during the period of the requested extension. (iv) The reasons why the permittee is unable to meet the January 1, 2015 compliance schedule and emission limitations in conditions I.XXX.11.a.(1) or (2). (f) Within 180 days after the receipt o f a complete request the department shall notify the applicant in writing of the reasons for denying, approving, or conditionally approving the request.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

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– Final Permit page 227

XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emis sions from Coal

- Fired Electric Generating Units * {CONTINUED}
a. Conditions: (8) * Large Coal

- fired Electric Generating Unit Variance: (a) The permittee may request a variance from the emission reduction requirements of conditions I.XXX.11.a.(1) a nd (2) by submitting a written request to the department and commission. The request shall provide sufficient information concerning the conditions or special circumstances on which the variance request is based to demonstrate to the department’s satisfac tion that a variance from the applicable requirements is necessary. In addition the request shall include the following: (i) Where an alternative compliance schedule is sought, the permittee shall submit a proposed schedule which demonstrates
reasonable further progress and contains a date for final compliance as soon as practicable. (ii) Where an alternative reduction requirement is sought, the permittee shall submit a proposed reduction requirement. (iii) Requests for variances shall contain relevant information on the costs and technological feasibility of meeting the reduction requirements as required by the department. (b) Requests for a variance shall be received 12 months in advance of an emission reduction requirement is conditions I.XXX.11.a.(1 ) or (2) or as established under I.XXX.11.a.(7). (c) The department may grant a variance that sets an alternative reduction requirement or schedule, or both. (d) The department may grant a variance if the permittee demonstrates to the department’s satisf action that the reduction requirements are technologically or economically infeasible. (e) The department may grant a variance that sets an alternative schedule if the permittee demonstrates to the department’s satisfaction that the delay is needed to com plete installation and place into operation control technology to achieve compliance with a reduction requirement. (f) Within 90 days of the receipt of a complete request, the department shall publish a public notice on each variance reque st and the depar tment’s preliminary determination to grant or deny the request, to provide opportunity for public comments including, where requested, a public hearing on the variance request. Following the public comment period, the department shall notify the permittee in writing of the reasons for denying, granting or for granting in a modified form any request for a
variance. (g) The department may, after notice and opportunity for hearing, revoke or modify any variance when any term or condition
of the variance has been violated. [s. NR 446.165, Wis. Adm. Code]

(9) * Compliance Alternatives: (a) Alternative Annual Allowable Mercury Emissions: [s. NR 446.185(1), Wis. Adm. Code] (i) The permittee may use baseline mercury emissions approved by the department as an alternative to procedures in condition I.XXX.11.a.4.(e)(i) in determining annual allowable mercury emissions. (ii) Baseline mercury emissions shall be determined and used for calculating annual allowable mercury emissions for 5

- year periods begin ning with the period of 2015 to 2019. Baseline mercury emissions shall be determined every 5 years and used to calculate annual allowable mercury emissions for the subsequent 5

- year period. (iii) Baseline mercury emissions for each 5

- year period shall b e determined using fuel mercury content data measured for the calendar year which is 2 years prior to the first year of the applicable 5

- year period. The year designated for measuring fuel mercury content is the baseline determination year.
Note: Baseline emissions are measured for 2013 for determining the annual allowable emissions for compliance years 2015 to 2019, measured for 2018 for determining allowable emissions for compliance years 2020 through 2024, etc. (iv) No later than May 1 of the calenda r year after the baseline determination year, the permittee shall submit a report to the department that includes information necessary to determine the baseline mercury emissions for that 5

- year period. (v) In the report required under par. (d), the pe rmittee may request alternative data be used for determining baseline emissions if the data for the specified year is not representative of the EGU's normal operations or maintenance
schedule.

{...Continued on Next Page...}FID 737009020; Permit No. 737009020

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XXX. 

### Conditions Applica ble to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fired Electric Generating Units * {CONTINUED}
a. Conditions: (9) * Compliance Alternatives: (a) Alternative Annual Allowable Mercury Emissions: {...Conti nued from Previous Page...} (vi) Baseline mercury emissions for each EGU shall be determined according to the following procedures: a) Measure and determine the fuel mercury content according to requirements of condition I.XXX.11.a.(4)(c) for all
fuels c ombusted in the EGU for the baseline determination year. b) Calculate the baseline mercury concentration, on a mmBtu

- basis, for the baseline determination year according to Equation 11.

HI Hg Fuel BMC h

1 i i annual 

## ∑

= = Equation 11

where: BMC is the average baseline mercury concentration of fuel, in pounds per mmBtu, contained in the fuels combusted

in the EGU during the baseline determination year Fuel Hg annual is the total mass of mercury contained in the fuel determined in subd. a). HI is the total amount of fuel, in mmBtu, consumed each hour i, during the baseline determination year h is the total number of hours fuel is consumed during the baseline determination year c) Calcul ate the baseline mercury emissions according to Equation 12 as the baseline mercury concentration times the
3

- year average of annual fuel consumption, in mmBtu, for the baseline determination year and 2 years prior to the baseline determination year.

3 HI

BMC BME 3

1 y y h

1 i i 

# ∑ ∑

= =        

× = Equation 12

where: BME is the baseline mercury emissions for the EGU in pounds BMC is the baseline mercury concentration for the EGU determined in subd. b)., in pounds per mmBtu. HI is the amount of fuel, in mmBtu combusted in the EGU for each hour i during each year y h is the total number of hours fuel is combusted in the EGU during each year (vii) When determining annual allowable mercury emissions for achieving com pliance on a unit

- by

- unit basis, use one of the following equations as applicable: a) For a percent reduction mercury emission limitation, Equation 13. CE) Hg

- (1 BME Hg allowable × = Equation 13

wher e: Hg allowable is the mass of mercury emissions allowed for the EGU for the compliance year BME is the baseline emissions for the EGU as determined in par. (vi)c). Hg CE is the applicable requirement for percent mercury emission reduction divided by 100

. b) For a mercury output emission limitation, Equation 14.

    

 

    

 

× × × = 

## ∑

=

GWh h

1 i i

GWh allowable E HI

CE) Hg

- (1 BMC GEO Hg Equation 14

where: Hg allowable is the mass of mercury emissions allowed for the compliance year
GEO GWh is the annual gross energy output of the EGU, in GWh, as determined in s. NR 446.18(4) for the compliance

year BMC is the baseline mercury concentration determined in par. (vi)c). for the EGU in pounds per mmBtu Hg CE is the applicable requirement for percent mercury contro l removal divided by 100 HI is the amount of fuel, in mmBtu combusted each hour i, in the baseline determination year h is the total number of hours fuel is combusted during the calendar year designated for measuring baseline emissions

data under par. (i ii)
E GWh is the annual gross electric output, in GWh, for the baseline determination year calculated according to s. NR

446.18(4)(a)FID 737009020; Permit No. 737009020

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XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 11



### . Control of Mercury Emissions from Coal

- Fire d Electric Generating Units * {CONTINUED}
a. Conditions: (9) * Compliance Alternatives: {...Continued from Previous Page...} (b) Alternative SO2 Compliance Determination: (i) The permittee may demonstrate compliance with the SO2 emission limitati on in condition I.XXX.11.a.(2)(a) by demonstrating a minimum SO2 control efficiency equal to or greater than 90% removal of sulfur from fuels combusted in the affected EGU each year, excluding startup and shutdown, using a method approved by the department

. (ii) If electing to demonstrate compliance according to paragraph (i), the permittee shall submit an SO2 compliance demonstration procedure for department approval no later than October 1, 2013. The compliance procedure shall include test
methods to det ermine sulfur removal from fuel and operating and parametric monitoring procedures to ensure continuous operation of control equipment consistent with maintaining the required control efficiency. [s. NR 446.185(2), Wis. Stats.]

(c) Alternative Methods an d Procedures: The permittee may use methods and procedures in determining annual allowable emissions as approved by the department to account for any of the following: (i) The contribution to mercury emissions by non

- fuel materials inherent to pollution control processes. The contribution to the annual allowable emissions may not exceed the amount calculated when substituting annual mercury content of non

- fuel materials for annual fuel mercury content in Equation 7 in this permit section. (b) When monit oring or implementing control equipment for a stack serving multiple EGUs. [s. NR 446.185(3), Wis. Stats.]

(10) * Mercury Emission Limits for Small Coal

- Fired Electric Generating Units (EGUs): 166 (a) Beginning January 1, 2015, an owner or operator of a sm all coal

- fired EGU shall limit mercury emissions to a level that is determined by the department to be the best available control technology. (b) Notwithstanding (a), an owner or operator may elect to have a small coal

- fired EGU comply with the mercury emission limits in I.ZZZ.11.(1) or (2) in accordance with I.ZZZ.11.(3)(b). (c) BACT Determination for Small Coal

- Fired Electric Generating Units: (i) No later than June 30

, 2011, owners or operators of small coal

- fired EGUs shall provide the department w ith a preliminary BACT determination. (ii) Notwithstanding (i), a small coal

- fired EGU designated by the department under I.ZZZ.11.(3)(b) to meet the emission limitations in I.ZZZ.11.(1) or (2) are not required to provide a preliminary BACT determination. (iii) The owner or operator shall submit the information required in (i) on the application form required for an operation permit, an amendment to an application, or renewal of the operation permit, as applicable. (iv) Within 180 days after the receipt o f the information in (iii), the department shall approve, conditionally approve, or disapprove the owner’s or operator’s preliminary BACT determination. [ss. NR 446.12 and 446.17(3), Wis. Adm. Code] Condition Type: 12. Continuous Monitoring Systems (CMS )

a. Conditions: (1) For all Continuous Emission Monitoring Systems (CEMS) required by this permit: (a) The permittee shall submit a quality control and quality assurance plan for approval by the department. The monitor sha ll follow the plan, as appro ved by the department. [s. NR 439.095(6), Wis. Adm. Code] (b) The permittee shall comply with the quality control and quality assurance plan submitted by the owner or operator of the source and approved by the department. [s. NR 439.09(8), Wis. Adm. Cod e and permits 06

- SDD

- 102, 07

- SDD

- 301, 03

- RV

248

- R4]

166 A small coal

- fired EGU means an electric generating unit serving a generator with a nameplate capacity greater than 25 megawatts but less than 150 megawatts, pursuant to s. NR 446.10(10), Wis. Adm. Code.FID 737009020; Permit No. 737009020

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XXX. 

### Conditions Applicable to the Entire Facility

Condition Type: 13.

a. Conditions:

This section intentionally left blank

.

Condition Type: 14



### . Stack Parameters

a. Conditions: (1) Each stack at the facility shall meet the respective requirements identified in Table 1 below. 167 (a) The height of each stack above ground level shall be at least the height listed in column (a) of the table below; (b) The inside diameter of each stack at its outlet may not exceed the diameter listed in column (b) of the table below; and (c) The stacks identified with a “No” in column (c) of the table below may not be equipped with a rainhat or other device which impedes the upward flow of exhaust gas and shall exhaust upward. 

### [ss. 285.63(1)(b) and 285.65(3), Wis. Stats. and 03

- RV

- 248

- R4, 04

- RV

- 128 ]

(2) Compliance Demonstration: The permittee shall keep and maintain on site technical drawings, blueprints or equivalent records of the physical stack paramet ers. [s. NR 439.04(1)(d), Wis. Adm. Code and 03

- RV

- 248

- R4, 04

- RV

- 128]

Table 1

– Stack Parameter Requirements (a) (b) (c)

Stack ID Minimum Stack Height (feet) Maximum Inside Diameter (or equivalent diameter) (feet) Obstruction or Non

- vertical
Flow A llowed? (yes/no)

Main Boilers:
S01 242.97 11.92 no S02 242.6 11.92 no S03 496.2 16.00 no S04 500.0 20.00 no Combustion Turbines:
S11 30.0 8.43 no 168

S12 23.0 8.10 no 169

S13 23.0 8.10 no 170
Auxiliary Boilers:
S21 126.17 1.42 yes S22 230.0 4.00 no S2 5 255.0 4.00 no Stationary Reciprocating Internal Combustion Engines:
S11AL 14.5 0.50 yes S11AU 15.7 0.50 yes S11B 15.3 0.42 yes S60 26.0 0.50 no S27 34.5 0.67 no S28 26.0 0.83 no Heaters:
S63 14.5 0.83 yes

167 These requirements are included because the sou rce was reviewed with these stack parameters and it was d e termined that no ambient quality standards would be violated when operated as proposed.

168 This stack has baffles at the stack exit, but the diameter and exhaust gas exit velocity were calculated ta king into consideration these baffles. For the purposes of this requirement, these baffles do not constitute a “device that impedes the upward flow of the exhaust gases”.

169 Ibid. (Same as previous footnote.)

170 Ibid. (Same as previous footnote.)FID 737009020; Permit No. 737009020

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– Stack Parameter Requirements (a) (b) (c)

Stack ID Minimum Stack Height (feet) Maximum Inside Diameter (or equivalent diameter) (feet) Obstruction or Non

- vertical
Flow A llowed? (yes/no)

S64 17.0 0.83 yes S67 20.9 1.35 yes S 68 20.4 1.35 yes S69 49.78 0.33 yes S70 49.78 0.33 yes Cooling Towers:
S24A 56.1 30.0 no S24B 56.1 30.0 no S24C 56.1 30.0 no S24D 56.1 30.0 no S24E 56.1 30.0 no S24F 56.1 30.0 no S24G 56.1 30.0 no S24H 56.1 30.0 no S26A 62.8 34.20 no S26B 62. 8 34.20 no S26C 62.8 34.20 no S26D 62.8 34.20 no S26E 62.8 34.20 no S26F 62.8 34.20 no S26G 62.8 34.20 no S26H 62.8 34.20 no S26I 62.8 34.20 no S26J 62.8 34.20 no S26K 62.8 34.20 no S26L 62.8 34.20 no

Dust Collectors / Bin Vents:
S31A 60.0 5.16 no S31B 60.0 5.16 no S31C 42.5 2.12 yes S32A 71.8 2.69 yes S32B 74.7 2.67 yes S32C 35.8 0.67 yes S32D 227.7 4.02 yes S32E 227.7 4.02 yes S34 65.0 2.17 no S35A 40.0 1.50 no S35B 147.0 2.63 no S36A 31.1 1.00 yes S36B 89.9 1.25 yes S37A 46. 69 0.67 no S37B 105.2 1.70 yes S39 31.4 0.93 no S30 35.0 2.17 no S41 75.0 3.83 no S42 95.0 2.17 no S43 250.0 4.83 no S44 69.5 1.46 yes S45 82.0 1.46 yes S49 123.0 1.50 yes S50 120.0 2.01 yes S65 72.5 0.67 noFID 737009020; Permit No. 737009020

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– Stack Parameter Requirements (a) (b) (c)

Stack ID Minimum Stack Height (feet) Maximum Inside Diameter (or equivalent diameter) (feet) Obstruction or Non

- vertical
Flow A llowed? (yes/no)

S66 72.5 0.67 no Welding Shops:
S6 1 38.46 2.0 no S62 37.0 2.0 noFID 737009020; Permit No. 737009020

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### YYY. Specific Conditions Applicable to all WPSC Facilities

1. Pollutant: 

### Sulfur Dioxide (SO2)*

a. Limitations: (1) Corporate Emission Limitation: The average number of pounds of sulfur dioxide emissions per million BTU of heat input from all boilers under the ownership or control of the permittee for any year may not exceed 1.20.

[WPSC is considered a major utility as defined in s. 285.41(1)(f), Wis. Stats. The total sulfur dioxide emissions from all

sta tionary sources in Wisconsin that are owned or controlled by WPSC have exceeded 5000 tons per year after 1979. As a result, WPSC is subject to s. 285.41(2), Wis. Stats. Which sets a corporate emission limit on the average pounds of sulfur
dioxide emissions per million BTU of heat input from all boilers under the ownership or control of WPSC. The corporate emission limit is 1.20 pounds per million BTU of heat input. The corporate emission limit does not affect the emission limits of
individual emission units under control of WPSC and is enforced separately from the emission limits on individual emission units.] [s. 285.41(2), Wis. Stats.]*

(2) WPSC shall prepare an annual sulfur dioxide emission summary that outlines compliance status with the corporate
emiss ion limit in condition I.YYY.1.a.(1) for each calendar year. [s. 285.41(6), Wis. Stats.]*

(3) Alternate Scenario

- Trading to Comply with Condition I.YYY.1.a.(1):

(a) Two major utilities (as defined in s. 285.41(1)(f), Wis. Stats.) may enter into an agreem ent for trading emissions unless the sum of the proposed traded emissions and the projected annual emissions of the grantor major utility for the year to which th e agreement will apply would exceed the actual annual emissions for the grantor major utility in 1985.

(b) To determine whether the major utility that is the grantor in an agreement is in compliance with the emission rate in condition I.YYY.1.a.(1) in a given year, the Department shall add the traded emissions and the grantor's annual emissions and divide the sum by the annual heat input of the grantor.

(c) To determine whether the major utility that is the grantee in an agreement is in compliance with the emission rate in condition I.YYY.1.a.(1) in a given year, the Department shall subtract the tr aded emissions from the grantee's annual emissions and divide the difference by the annual heat input of the grantee. [s. 285.41(2)(b), Wis. Stats.]*

(4) Alternate Scenario

– Variance: WPSC may request a variance from the emission rate in condition I.YYY.1 .a.(1) according to the following conditions:

(a) WPSC may request a variance from the emission rate in condition I.YYY.1.a.(1) if the Department has not served WPSC with written notice under s. 285.83, Wis. Stats., that WPSC has violated condition I.YYY.1 .a.(1); and

(b) if any of the following variance conditions exist:

1. A major electrical supply emergency within or outside this state.

2. A major fuel supply disruption.

3. An extended and unplanned disruption in the operation of a nuclear plant or low sulfur coal

- fired boiler under the ownership or control if the major utility.

4. The occurrence of an uncontrollable event not anticipated in the plan submitted under conditions I.YYY.1.b.(1) and I.YYY.1.c.(1).

5. A plan by WPSC to install and place into operation new technological devices that will enable it to achieve compliance with condition I.YYY.1.a.(1).

(c) With the request for a variance, WPSC shall submit its plan for achieving compliance with condition I.YYY.1.a.(1).

(d) If the request is based on the variance conditions specified under condition I.YYY.1.a.1.b.(1) through (5)., the request shall include an explanation of why the major utility cannot achieve or remain in compliance by using fuel with a lower sulfur content or by environmental disp atching. [s. 285.41(4), Wis. Stats.]*

{Continued on Next Page...}FID 737009020; Permit No. 737009020

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### YYY. Specific Conditions Applicable to all WPSC Facilities

1. Pollutant: 

### Sulfur Dioxide (SO2)*

- {Continued)

b. Compliance Demonstration: c. Test Methods, Recordkeeping, and Monit oring: (1) Annual Compliance Plan

– Each year WPSC shall prepare an annual plan for achieving compliance with the emission rate under condition I.YYY.1.a.(1) that includes, at a
minimum:

(a) WPSC's expected electricity demand;

(b) WPSC's annual operation plan;

(c) The expected operation characteristics of each boiler operated by WPSC, including:

1. The order to be used in placing boilers into operational production,

2. The planned maintenance schedule for each boiler,

3. How any maintenance is expected to affect the methods of meeting electricity demands,

4. The amount of coal and other fossil fuels or other materials to be used for each boiler in operational production,

5. The sulfur content (in pounds of sulfur dioxide per million BTU of heat input) of co al and other fossil fuels or other materials to be used for each boiler in operational production,

6. The anticipated sulfur dioxide emissions from each boiler,

7. Contingency plans for unexpected events or increased demand including a summary of generatio n costs and the anticipated additional costs for reducing sulfur dioxide emissions under those circumstances,

8. The methods that will be used to achieve compliance with condition I.YYY.1.a.(1) in the following year including, if applicable, the provisions of any trading agreement under s. 285.41(2)(b)1), Wis. Stats.,

9. The total anticipated annual sulfur dioxide emissions from all boilers under the ownership or control of the permittee for each of the next three (3) years. [s. 285.41(3)(a), Wis. Stats.]* (1) WPSC shall submit a copy of the Annual Compliance Plan required by condition I.YYY.1.b.(1) on or before October 1 of each year for the following calendar year to:

(a) The Wisconsin Department of Natural Resources, Bureau of Air Management, 101 South We bster Street, P.O. Box 7921 (AM/7), Madison, WI 53707

- 7921; and

(b) The Wisconsin Public Service Commission, 610 North Whitney Way, Madison, WI 53705. [s. 285.41(3)(a), Wis. Stats.]*

(2) The annual sulfur dioxide emission summary required by condition W(1) (b)2) shall be submitted by March 1 for the preceding calendar year to:

(a) The Wisconsin Department of Natural Resources, Bureau of Air Management, 101 South Webster Street, P.O. Box 7921 (AM/7), Madison, WI 53707

- 7921; and

(b) The Wisconsin Public Serv ice Commission, 610 North Whitney Way, Madison, WI 53705. [s. 285.41(6), Wis. Stats.]*

(3) Any requests for variance described in condition I.YYY.1.a.(4) shall be submitted to:

(a) The Wisconsin Department of Natural Resources, Bureau of Air Management, 10 1 South Webster Street, P.O. Box 7921 (AM/7), Madison, WI 53707

- 7921; and

(b) The Wisconsin Public Service Commission, 610 North Whitney Way, Madison, WI 53705. [s. 285.41(4), Wis. Stats.]*FID 737009020; Permit No. 737009020

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ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

Issued to: Westo n Plant

ORIS Code: 4078

Unit ID# [Provided by the National
Allowance Database for the Federal Acid Rain Program.] OWNED AND OPERATED BY: NEW UNIT

- Commence Operation Date [NA = Not Applicable] NEW UNIT

- Monitor
Certification Deadline

1 Wisconsin Publi c Service Corporation NA NA

2 Wisconsin Public Service Corporation NA NA

3 Wisconsin Public Service Corporation NA NA

Duty to Reapply : The designated representative shall submit a complete acid rain portion of an operation permit application at
least 1 2 months, but not more than 18 months, before this permit expires. [s. NR 409.08(1)(c), Wis. Adm. Code]

Permit Shield : Operation in accordance with the acid rain portion of this operation permit shall be deemed to be operation in compliance with the acid rain program, except as provided in s. NR 409.06(7)(f), Wis. Adm. Code. [s. NR 409.10(2), Wis. Adm. Code]

Contents :

1. Statement of Basis

2. Unit Specific Requirements

3. Standard Requirements

4. General Requirements

5. Comments, notes and justifications reg arding permit decisions.

1. Statement of Basis Statutory and Regulatory Authorities : This portion of the operation permit is issued pursuant to ss. 285.60 to 285.66, Wis. Stats., Titles IV and V of the federal Clean Air Act (42 USC 7651 to 7661f), and ch s. NR 407 and 409,
Wis. Adm. CodeFID 737009020; Permit No. 737009020

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ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

2. Specific Requirements for Units 1, 2 and 3

a. 

### Sulfur Dioxide

(1) Limitation: (2) Compliance Plan: (a) Sulfur dioxide emissions from EACH unit may not exceed
the num ber of allowances that the source lawfully holds under the acid rain program, including allowances allocated directly to the source through the acid rain program and allowances obtained through the emissions trading provisions of the acid rain program, sub ject to the following qualifications:

(i) No permit revision may be required for increases in emissions that are authorized by allowances acquired pursuant to the acid rain program, provided that the increases do not require a permit revision under any oth er applicable requirement;

(ii) No limit may be placed on the number of allowances that may be held by the stationary source;

(iii) A stationary source may not use allowances as a defense to noncompliance with any applicable requirements other than the req uirements of the acid rain program; and

(iv) Any acid rain allowance shall be accounted for according to the procedures established in the acid rain program. [s. NR 407.09(2)(a), Wis. Adm. Code]

(2) The permittee shall operate EACH unit in compliance
with the standard sulfur dioxide requirements of condition 3.c. of the acid rain portion of this permit. [s. NR 409.06(3)(a)2, Wis. Adm. Code] (a) The permittee shall, as of the allowance transfer deadline, hold allowances in the facility’s compliance account [ after deductions under 40 CFR 73.34(c)] not less than the total annual emissions of sulfur dioxide for the previous calendar year from the affected units at the facility. The permittee is not applying for any compliance options under 40 CFR 72.40(b) or s. NR 409.09(1)(b), Wis. Adm. Code. 171

[The allowance transfer deadline is midnight of the 60 th day after the end of the calendar year if such date is a business day. If not, the deadline is midnight of the first business day thereafter.]

[40 CFR 72.9(c)(1)(i) and s. NR 409.06(3)(a)1., Wis. Adm. Code]

171 This federal provision is an update of the earlier federal acid rain rule that is currently reflected in s. NR 409.06(3)(a)1. Compliance with the federal rule satisfies this state requirement.FID 737009020; Permit No. 737009020

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ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

2. Specific Requirements for Units 1, 2 and 3

- {Continued}



### b. Nitrogen Oxides

(1) Limitation: (2) Compliance Plan: (1) The owner or operator may not discha rge, or allow to be discharged, emissions of NOx in excess of the following limits: 172
(a) Unit 1: 0.50 pounds per million Btu of heat input on an annual average basis; (b) Unit 2: 0.50 pounds per million Btu of heat input on an annual average basis; (c) U nit 3: 0.45 pounds per million Btu on an annual average basis. [ss. NR 409.06(4) and NR 409.065(2), Wis. Adm. Code]

172 Previously, Wisconsin Public Service Corporation operated under a Phase II Nitrogen Oxide Averaging Plan which included Units 3 through 8 at the J.P. Pulliam Plant and Units 1 through 3 at the Weston Plant. The Nitrogen Oxide Averaging Plan expired in 2013 and has not been renewed with US EPA. Under that averag ing plan WPSDC requested alternative contemporaneous emission limits for Units 1 through 3 at the Weston Plant. The applicable limitations are 0.50 pounds per million BTU for Units 1 through 2 and 0.45 pounds per million BTU for Unit 3.FID 737009020; Permit No. 737009020

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ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

3. Standard Requirements for all Affected Units

a. 

### Permit Requirements

(1) The designa ted representative of each affected source and each affected unit at the source shall: (a) Except for a phase I acid rain permit to be issued by U.S. EPA, submit a complete acid rain portion of an operation permi t application (including a compliance plan) under 40 CFR part 72 and ch. NR 409, Wis. Adm. Code in accordance with the deadlines specified in s. NR 409.08(1), Wis. Adm. Code and 40 CFR 72.30; and (b) Submit in a timely manner any supplemental information that the Department determines is necessary i n order to review an acid rain portion of an operation permit application and issue or deny an acid rain portion of an operation permit applicatio n. [s. NR 409.06(1)(a), Wis. Adm. Code]

(2) The owners and operators of each affected source and each affected unit at the source shall: (a) Operate the unit in compliance with a complete acid rain portion of an operation permit application or a superseding acid rain portion of an operation permit issued by the Department; and (b) Have an acid rain portion of an o peration permit. [s. NR 409.06(1)(b), Wis. Adm. Code]



### b. Monitoring Requirements

(1) The owners and operators and, to the extent applicable, designated representative of each affected source and each affected unit at the source shall comply with the moni toring requirements as provided in 40 CFR parts 74, 75, and 76 and section 407 of the act (42 USC 7651f) and regulations implementing section 407 of the act. [s. NR 409.06(2)(a), Wis. Adm. Code]

(2) The emissions measurements recorded and reported in accor dance with 40 CFR part 75 and section 407 of the act (42 USC 7651f) and regulations implementing section 407 of the act shall be used to determine compliance by the unit with the acid ra in emissions limitations and emissions reduction requirements for sulf ur dioxide and nitrogen oxides under the acid rain program. [s. NR 409.06(2)(b), Wis. Adm. Code]

(3) The requirements of 40 CFR parts 74 and 75 and regulations implementing section 407 of the act (42 USC 7651f) do not affect the responsibility of the owner s and operators to monitor emissions of other pollutants or other emissions characteristics at the unit under other applicable requirements of the act and other provisions of the operation permit for the source. [s. N R 409.06(2)(c), Wis. Adm. Code]



### c. Sul fur Dioxide Requirements

(1) The owners and operators of each source and each affected unit at the source shall: (a) Hold allowances, as of the allowance transfer deadline, in the facility's compliance account, after deductions under 40 C FR 73.34(c), not less than the total annual emissions of sulfur dioxide for the previous calendar year from the affected units at the facility; 173 and (b) Comply with the applicable acid rain emissions limitations for sulfur dioxide. [40 CFR 72.9(c)(1)(i) and s. NR 409.06(3 )(a), Wis. Adm. Code]

(2) Each ton of sulfur dioxide emitted in excess of the acid rain emissions limitations for sulfur dioxide shall constitute a separate violation. [s. NR 409.06(3)(b), Wis. Adm. Code]

(3) An affected unit shall be subject to the requir ements under condition 3.c.(1) of the acid rain portion of this permit as
follows: (a) Starting January 1, 2000, for an affected unit under s. NR 409.01(1)(a)2., Wis. Adm. Code; or (b) Starting on the later of January 1, 2000 or the monitor certification d eadline under 40 CFR part 75, for an affected unit under s. NR 409.01(1)(a)3, Wis. Adm. Code. [s. NR 409.06(3)(c), Wis. Adm. Code]

(4) Allowances shall be held in, deducted from, or transferred among allowance tracking system accounts in accordance with
th e acid rain program. [s. NR 409.06(3)(d), Wis. Adm. Code]

(5) An allowance may not be deducted in order to comply with the requirements under condition 3.c.(1)(a) of this permit prior to the calendar year for which the allowance was allocated. [s. NR 409.0 6(3)(e), Wis. Adm. Code]

{Continued on Next Page...}

173 This federal p rovision is an update of the earlier federal acid rain rule that is currently reflected in s. NR 409.06(3)(a). Compliance with the federal rule satisfies the state requirement.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 239

ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

3. Standard Requirements for all Affected Units

– {Continued}



### c. Sulfur Dioxide Requirements

– {Continued}

{...Continued from Previous Page...}

(5) An allowan ce may not be deducted in order to comply with the requirements under condition 3.c.(1)(a) of this permit prior to the calendar year for which the allowance was allocated. [s. NR 409.06(3)(e), Wis. Adm. Code]

(6) An allowance allocated by the U.S. EPA unde r the acid rain program is a limited authorization to emit sulfur dioxide in accordance with the acid rain program. No provision of the acid rain program, the acid rain portion of an operation permit application, the acid rain portion of an operation permi t or the written exemption under ss. NR 409.04 and 409.05, Wis. Adm. Code and no provision of law shall be construed to limit the authority of the United States to terminate or limit such authorization. [s. NR 409.06(3)(f), Wis. Adm. Code]

(7) An allowance allocated by the U.S. EPA under the acid rain program does not constitute a property right. [s. NR 409.06(3)(g), Wis. Adm. Code]



### d. Nitrogen Oxide Requirements

(1) The owners and operators of the source and each affected unit at the source shall comply with the applicable acid rain emission limitation for nitrogen oxides.

[s. NR 409.06(4), Wis. Adm. Code, is based on the Nitrogen Oxide Requirements set forth in 40 CFR Part 76 which requires the owners and operators of an affected unit at a source to comp ly with the applicable acid rain emission limitations for nitrogen oxides.]



### e. Excess Emissions Requirements

(1) The designated representative of an affected unit that has excess emissions in any calendar year shall submit a proposed offset plan to the U .S. EPA, as required under 40 CFR part 77, and submit a copy to the Department. [s. NR 409.06(5)(a), Wis. Adm. Code]

(2) The owners and operators of an affected unit that has excess emissions in any calendar year shall:

(a) Pay to the U.S. EPA without dema nd the penalty required, and pay to the U.S. EPA upon demand the interest on that penalty, as required by 40 CFR part 77; and

(b) Comply with the terms of an approved offset plan, as required by 40 CFR part 77. [s. NR 409.06(5)(b), Wis. Adm. Code]



### f. Reco rdkeeping and Reporting Requirements

(1) Unless otherwise provided, the owners and operators of the source and each affected unit at the source shall keep on site at the source each of the following documents for a period of 5 years from the date the docu ment is created. This period may be extended for cause, at any time prior to the end of 5 years, in writing by the U.S. EPA or the Department:

(a) The certificate of representation for the designated representative for the source and each affected unit at the source and all documents that demonstrate the truth of the statements in the certificate of representation, in accordance with 40 CFR 72.24; provided that the certificate and documents shall be retained on site at the source beyond such 5

- year period u ntil such documents are superseded because of the submission of a new certificate of representation changing the designated representative;

(b) All emissions monitoring information, in accordance with 40 CFR part 75;

(c) Copies of all reports, compliance c ertifications, and other submissions and all records made or required under the acid rain program; and,

(d) Copies of all documents used to complete an acid rain portion of an operation permit application and any other submission under the acid rain progra m or to demonstrate compliance with the requirements of ch. NR 409, Wis. Adm. Code and the acid rain program. [s. NR 409.06(6)(a), Wis. Adm. Code]

(2) The designated representative of an affected source and each affected unit at the source shall submit the reports and compliance certifications required under the acid rain program, including those under s. NR 409.13, Wis. Adm. Code and 40 CFR part 75. [s. NR 409.06(6)(b), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 240

ZZZ. ACID RAIN PORTION OF OPERATION PERMIT

3. Standard Requirement s for all Affected Units

– {Continued}



### g. Liability

(1) Any person who knowingly violates any requirement or prohibition of the acid rain program, a complete acid rain portion of an operation permit application, an acid rain portion of an operation permi t, or a written exemption under ss. NR 409.04 and NR 409.05, Wis. Adm. Code shall be subject to enforcement by the Department pursuant to ch. NR 494, Wis. Adm. Code and ss. 285.83 and 285.87, Wis. Stats. Any person who knowingly violates any requirement or prohibition of the acid rain program, a complete acid rain portion of an operation permit application, an acid rain portion of an operation permit, or a written exemption under 40 CFR 72.7 or 72.8 including any requirement for the payment of any penalty o wed to the United states shall be subject to enforcement by the U.S. EPA pursuant to s. 113(c) of the Clean Air Act. [s. NR 409.06(7)(a), Wis. Adm. Code]

(2) Any person who knowingly makes a false, material statement in any record, submission, or report un der the Acid Rain Program shall be subject to criminal enforcement by the Department pursuant to ch. NR 494, Wis. Adm. Code and ss. 285.83 and 285.87, Wis. Stats. Any person who knowingly makes a false, material statement in any record, submission, or repo rt under the Acid Rain Program shall be subject to criminal enforcement by the U.S. EPA pursuant to s. 113(c) of the Clean Air Act and 18 U.S.C. 1001. [s. NR 409.06(7)(b), Wis. Adm. Code]

(3) No permit revision may excuse any violation of the requirements of ch. NR 409, Wis. Adm. Code, and the acid rain program that occurs prior to the date that the revision takes effect. [s. NR 409.06(7)(c), Wis. Adm. Code]

(4) Each affected source and each affected unit shall meet the requirements of ch. NR 409, Wis. Adm. Code, and the acid rain program. [s. NR 409.06(7)(d), Wis. Adm. Code]

(5) Any provision of the acid rain program that applies to an affected source, including a provision applicable to the designated representative of an affected source, shall also apply to the owners and operators of such source and of the affected units at the source. [s. NR 409.06(7)(e), Wis. Adm. Code]

(6) Any provision of the acid rain program that applies to an affected unit, including a provision applicable to the designated

represe ntative of an affected unit, shall also apply to the owners and operators of such unit. Except as provided under s. NR 409.09(2), Wis. Adm. Code, 40 CFR 72.44 (Phase II repowering extension plans) and 40 CFR part 76.11 (NOx averaging plans), and except wit h regard to the requirements applicable to units with a common stack under 40 CFR part 75, including 40 CFR 75.16, 75.17, and 75.18, the owners and operators and the designated representative of one affected unit are not liable f or any violation by any oth er affected unit of which they are not owners or operators or the designated representative and that is located at a source of which they are not owners or operators or the designated representative. [s. NR 409.06(7)(f), Wis. Adm

. Code]

(7) Each violation of a provision of ch. NR 409, Wis. Adm. Code and 40 CFR parts 72, 73, 75, 76, 77, and 78 by an affected source or affected unit, or by an owner or operator or designated representative of such source or unit, shall be a separate violation. [s. NR 409.06(7) (g), Wis. Adm. Code]



### h. Effect on Other Authorities

(1) No provision of the acid rain program, an acid rain portion of an operation permit application, an acid rain portion of an operation permit, or a written exemption under s. NR 409.04 or NR 409.05, W is. Adm. Code, or 40 CFR part 72.7 or 72.8 may
be construed as:

(a) Except as expressly provided in title IV of the act (42 USC 7651 to 7651o), exempting or excluding the owners and operators and, to the extent applicable, the designated representative of an affected source or affected unit from compliance with any other provision of the act, including the provisions of title I of the act relating to applicable national ambient a ir quality standards or state implementation plans;

(b) Limiting the number of allowances a unit can hold; provided, that the number of allowances held by the unit shall not affect the source's obligation to comply with any other provisions of the act;

(c) Requiring a change of any kind in any state law regulating electric utility ra tes and charges, affecting any state law regarding the state regulation, or limiting the state regulation, including any prudence review requirements under state law;

(d) Modifying the federal power act (16 USC 791a et seq.) or affecting the authority of t he federal energy regulatory commission under the federal power act; or,

(e) Interfering with or impairing any program for competitive bidding for power supply in a state in which the program is established. [s. NR 409.06(8), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 241

ZZZ. ACID R AIN PORTION OF OPERATION PERMIT



### 4. General Requirements for all Affected Units

a. Submissions

(1) The designated representative shall submit a certificate of representation, and any superseding certificate of representation

, to the U.S. EPA in accordanc e with subpart B of 40 CFR part 72 and, concurrently, shall submit a copy to the Department. The designated representative may disregard this requirement if the aforementioned certificate has already been submitted to the U.S. EPA and the Department. [s. N R 409.07(1)(a), Wis. Adm. Code]

(2) Each submission under the acid rain program shall be submitted, signed and certified by the designated representative for all sources on behalf of which the submission is made. [s. NR 409.07(1)(b), Wis. Adm. Code]

(3) In each submission under the acid rain program, the designated representative shall certify, by his or her signature: (a) The following statement, which shall be included verbatim in the submission: "I am authorized to make this submission on
behalf of the o wners and operators of the affected source or affected units for which the submission is made." (b) The following statement which shall be included verbatim in the submission: "I certify under penalty of law that I have personally examined, and am familiar with, the statements and information submitted in this document and all its attachments. Based on my inquiry of those individuals with primary responsibility for obtaining the information, I certify that the statem ents and information are to the best proo f my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false statements and information or omitting required statements and information, includ ing the possibility of fine or imprisonment." [s. NR 409.07(1)(c), Wis. Adm. Code]

(4) The designated representative of a source shall serve notice on each owner and operator of the source and of an affected
unit at the source: (a) By the date of submission, of any acid rain program submissions by the de signated representative; (b) Within 10 business days of receipt of a determination, of any written determination by the U.S. EPA or the Department; (c) Provided that the submission or determination covers the source or the unit. [s. NR 409.07(1)(e), Wis. A dm. Code]

(5) The designated representative of a source shall provide each owner and operator of an affected unit at the source a copy of any submission or determination under condition 4.b.(4) of the acid rain portion of this permit, unless the owner or o perator expressly waives the right to receive a copy. [s. NR 409.07(1)(f), Wis. Adm. Code]



### b. Acid Rain Portion of an Operation Permit Requirements

(1) The acid rain portion of this operation permit is a portion of the operation permit that is complete a nd segregable from all other air quality requirements and may not incorporate information contained in any other documents, other than documents that are readily available. [s. NR 409.11(1)(b), Wis. Adm. Code]



### c. Appeal Procedures

(1) Appeals of the acid rain portion of this operation permit issued by the Department that do not challenge or involve decisions or actions of the U.S. EPA under 40 CFR parts 72, 73, 75, 77 and 78 and regulations implementing sections 407 and 410 (42 USC 7651f and 7651i) of the act shall be conducted according to the procedures in ch. NR 407 and ss. 285.13(1), 285.81 and 227.40 to 227.60, Wis. Stats. The permit shield under s. NR 409.10(2) shall continue to be in effect during the appeal process. Appeals of the acid rain portion of a permit that challenge or involve decisions or actions of the U.S. EPA shall follow the procedures under 40 CFR part 78 and section 307 of the act (42 USC 7607). Decisions or actions include, but are not limited to, allowance allocations, determinatio ns concerning alternative monitoring systems and determinations of whether a technology is a qualifying repowering technology. [s. NR 409.11(2)(a), Wis. Adm. Code]

(2) No state or administrative or judicial appeal of the acid rain portion of an operation p ermit may be allowed to commence more than 30 days following the issuance of the acid rain portion of an operation permit, as provided by ss. 285.81 and 227.5 3, Wis. Stats. [s. NR 409.11(2)(b), Wis. Adm. Code]

(3) The U.S. EPA may intervene as a matter of right in any state administrative appeal of an acid rain portion of an operation permit or denial of an acid rain portion of an operation permit. [s. NR 409.11(2)(c), Wis. Adm. Code]FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 24 8

- R 6

– Final Permit page 242

ZZZ. ACID RAIN PORTION OF OPERATION PERMIT



### 5. Comments, Notes and J ustifications:

None.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART II

– Gener al Permit Conditions



### PART II

GENERAL PERMIT CONDITIONS
FOR DIRECT STATIONARY SOURCESFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART II

– Gener al Permit Conditions



### INSERT PART II ...................FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Draft Permit for Public Comment PART III

– CAIR APPLICATION



### PART III Clean Air Interstate Rule (CAIR) Requirements

Facility Name: Wisconsin Public Service Corporation

– Weston

FID #: 737009020

Permit #: 737009020

- P10

ORIS/Facility Code: 4078

The following Clean Air Interstate Rule (CAIR) Requirements apply to boiler B01 (identified by the facility as Unit 1), boiler B02 (identified by the facility as Unit 2), boiler B03 (iden tified by the facility as Unit 3), boiler B04 (identified by the facility as Unit 4), process P32A (identified by the facility as Unit 32A, and process P32B (identified by the facility as Unit 32B):

Nitrogen Oxide

– Annual
Sulfur Dioxide Nitrogen Oxide

– Ozone Season

The permittee shall comply with the CAIR requirements as outlined in the CAIR Permit Application (for sources subject to CAIR FIP) and 40 CFR 97.121, 97.122, 97.221, 97.222, 97.321 and 97.322. 174



### The CAIR Permit Application submitted by Wis consin Public Service Corporation

– Weston and dated May 23, 2007 is incorporated as Part III of this Operation Permit. (See attached.)

Table 1, s. NR 432.03(5), Wis. Adm. Code CAIR NOx Allocations by CAIR NOx Unit (in tons of CAIR NOx allowances)
Unit Location Unit Number 2012 2013 2014

Weston 1 321 321 321
Weston 2 531 531 531
Weston 3 2000 2000 2000
Weston 32 39 39 39

Table 2, s. NR 432.05(5), Wis. Adm. Code CAIR NOx Ozone Season Allocations by CAIR NOx Unit (in tons of CAIR NOx ozone season all owances)
Unit Location Unit Number 2012 2013 2014

Weston 1 137 137 137
Weston 2 233 233 233
Weston 3 849 849 849
Weston 32 21 21 21

174 If US EPA revises the CAIR requirements, the permittee shall comply with an y such revisions including changes to the CAIR Permit Application necessitated by the revisions. The permittee shall submit any revised CAIR Permit Application to the department along with an application to revise this operation permit if a revision of th is permit is

necessary.FID 737009020; Permit No. 737009020

- P10 & 03

- RV

- 248

- R 6

– Final Permit PART III

– CAIR APPLICATION

- page 1



### ..... INSERT CAIR APPLICATION AS PART IIIFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R6

– Draft Permit for Public Comment PART IV

– CAM Plans

Wisconsin Public Service

– Weston Plant



### PART I V

COMPLIANCE AS SURANCE MONITORING (CAM) PLANSFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 1



### COMPLIANCE ASSURANCE MONITORING PLAN

WISCONSIN PUBLIC SERVICE CORPORATION
WESTON POWER PLANT

UNITS 1, 2, 3, 4 and Material Handling SourcesFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 2



### WESTON POWER PLANT
UNIT 1
COMPLIANCE ASSURANCE MONITORING PROTO COL
FOR PARTICULATE MASS EMISSIONS

I. Background

A. Emissions Units

Permit Identification/ Description: W1; coal

- fired utility boiler

Permit Number: 737009020

- P10

Facility: Weston Power Plant Rothschild, WI

B. Applicable Regulation, Emis sions Limit, and Monitoring Requirements

Particulate Matter
Emissions Limit 0.10 lb/mmBtu and 85.8 lbs/hr

Current PM monitoring requirements for W1 are as noted in the applicable Air Pollution Control Operation Permit.

C. Control Technologies C 01; Joy Western Plate & Wire Style Electrostatic Precipitator ( ESP)

II. Monitoring Approach

The key elements of the monitoring approach for Unit 1 (including the indicators to be monitored, indicator ranges, and performance criteria) are presented in Table 1.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 3



### Table 1

- Monitoring Approach for Unit 1

Indicator #1

I. Indicator Stack (S01) Opacity.

Measurement Approach The opacity is measure d using a Continuous Opacity Monitoring System (COMS) at the stack for Unit 1 (S01).

II. Indicator Range An opacity in excess of 19% for any one

- hour average operating period as measured by the COMS will be
considered a CAM excursion.

III. Performance C riteria Data Representativeness Opacity is related to the size and concentration of particles in the flue gas. As particulate mass emissions increase, it can be reasonably expected that stack opacity will also
increase.

Unit 1 (W1) discharges to a dedi cated stack with no bypass capabilities. The stack is equipped with a COMS that meets the installation and minimum acceptable accuracy requirements as specified in the applicable version of 40 CFR 60, Performance Specification 1. The COMS is
located down stream of the ESP and, therefore, reflects the performance of the control device (C01) for Unit 1. Verification of Operational Status Not applicable. Monitoring approach uses existing equipment. QA/QC Practices and Criteria Calibrate, maintain and opera te the continuous emission monitor in accordance with the performance specifications in 40 CFR Part 75, Appendices A to I and Performance Specification 1 in 40 CFR Part 60, Appendix B. Monitoring Frequency Continuous.
Data Collection Procedures The COMS collects data and the CEMS data acquisition system reduces the data to one

- hour averages. Averaging Period One hour averages, as measured by the COMS

. IV. Quality Improvement Plan (QIP) If excursions occur for more than 5% of the equipment operating tim e during any semi

- annual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement Plan in accordance with §64.8 of 40 CFR Part 64.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 4



### WESTON POWER PLANT
UNIT 2
COMPLIANCE ASSURANCE MONITORING PROT OCOL
FOR PARTICULATE MASS EMISSIONS

I. Background

A. Emissions Units

Permit Identification/ Description: W2; coal

- fired utility boiler

Permit Number: 737009020

- P10

Facility: Weston Power Plant Rothschild, WI

B. Applicable Regulation, Emi ssions Limit, and Monitoring Requirements

Particulate Matter
Emissions Limit 0.10 lb/mmBtu and 100 lbs/hr

Current PM monitoring requirements for W2 are as noted in the applicable Air Pollution Control Operation Permit.

C. Control Technologies C 02: Joy Western Plate & Wire Style ESP

II. Monitoring Approach

The key elements of the monitoring approach for Unit 2 (including the indicators to be monitored, indicator ranges, and performance criteria) are presented in Table 2.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 5



### Table 2

- Monitoring Approach for Unit 2

Indicator #1

I. Indicator Stack (S02) Opacity.

Measurement Approach The opacity is measured using a Continuous Opacity Monitoring System (COMS) at the stack for Unit 2 (S02).

II. Indicator Range An opacity in excess of 10.5% for an y one

- hour average operating period as measured by the COMS will be
considered a CAM excursion.

III. Performance Criteria Data Representativeness Opacity is related to the size and concentration of particles in the flue gas. As particulate mass emissio ns increase, it can be reasonably expected that stack opacity will also
increase.

Unit 2 (W2) discharges to a dedicated stack with no bypass capabilities. The stack is equipped with a COMS that meets the installation and minimum acceptable accuracy requi rements as specified in the applicable version of 40 CFR 60, Performance Specification 1. The COMS is located downstream of the ESP and, therefore, reflects the performance of the control device (C02) for Unit 2. Verification of Operational Status Not ap plicable. Monitoring approach uses existing equipment. QA/QC Practices and Criteria Calibrate, maintain and operate the continuous emission monitor in accordance with the performance specifications in 40 CFR Part 75, Appendices A to I and Performance Spe cification 1 in 40 CFR Part 60, Appendix B. Monitoring Frequency Continuous.
Data Collection Procedures The COMS collects data and the CEMS data acquisition system reduces the data to one

- hour averages

. Averaging Period One

- hour averages as measured b y the COMS

. IV. Quality Improvement Plan (QIP) If excursions occur for more than 5% of the equipment operating time during any semi

- annual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement Plan in accordance with §64.8 of 40 CFR Part 64.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 6



### WESTON POWER PLANT
UNIT 3
COMPLIANCE ASSURANCE MONITORING PROTOCOL
FOR PARTICULATE MASS EMISSIONS

I. Background

A. Emissions Units

Permit Identification/ Description: W3; coal

- fired utility boile r

Permit Number: 737009020

- P10

Facility: Weston Power Plant Rothschild, WI

B. Applicable Regulation, Emissions Limit, and Monitoring Requirements

Particulate Matter
Emissions Limit 0.10 lb/mmBtu and 342.3 lbs/hr

Current PM monitoring require ments for W3 are as noted in applicable Air Pollution Control Operation and Construction permits.

C. Control Technologies C03; Environmental Elements Corporation Baghouse

II. Monitoring Approach

The key elements of the monitoring approach for Unit 3 (including the indicators to be monitored, indicator ranges, and performance criteria) are presented in Table 3.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 7



### Table 3

- Monitoring Approach for Unit 3

Indicator #1 Indicator #2

I. Indicator Baghouse (C03) Differential
Pressure. Stack (S03) Opacity

.

Measurement Approach The pressure differential is measured by electronic pressure transmitters, which are located at
the inlet and the outlet of the baghouse. The opacity is measured using a Continuous Opacity Monitoring System (COMS)
at the stack for U nit 3 (S03).

II. Indicator Range 2.0 to 10.0 inches of water
column. An excursion is defined as a differential pressure outside of the range. Opacity in excess of 10 % for

any one

- hour average operating period as measured by the COMS will be
considered a CAM excursion.

III. Performance Criteria Data Representativeness The pressure differential is a
measurement of the resistance of flow as the gas passes through the filter bag(s) and filter cake.
Pressure transmitters are located
at the inlet and outl et of the dust collector, which reflects the pressure drop across the entire baghouse. Each pressure
transmitter has a minimum accuracy within 5% of the pressure drop within 1 inch of water column, whichever is greater. Opacity is related to the size
and concentration of particles in the flue gas. As particulate mass emissions increase, it can be reasonably expected that stack opacity will also
increase.

Unit 3 (W3) discharges to a
dedicated stack. The stack is equipped with COMS that
meets the installa tion and minimum acceptable accuracy requirements as specified in the applicable version of 40 CFR 60, Performance Specification 1. The COMS
is located downstream of the baghouse and, therefore, reflects the performance of the control device (C03) for Uni t 3.
Verification of Operational Status Not applicable. Monitoring approach uses existing equipment. Not applicable. Monitoring approach uses existing equipment. QA/QC Practices and
Criteria Equipment is repaired/replaced as needed. The equipment is

c alibrated annually. Calibrate, maintain and operate the continuous
emission monitor in
accordance with the performance specifications in 40 CFR Part 75, Appendices
A to I and Performance Specification 1 in 40 CFR Part 60, Appendix B.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 8

Monitoring Frequency Continuously while boiler is operating. Continuous.

Data Collection
Procedures The differential pressure is monitored continuously through the distributed control system (DCS). The COMS collects data and the CEMS data acquisition system reduces the data t o

one

- hour averages

. Averaging Period No averaging period for differential pressure. One

- hour averages as measured by the COMS

. IV. Quality Improvement Plan (QIP) If excursions occur for more than 5% of the equipment operating time during any semi

- ann ual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement Plan in accordance with §64.8 of 40 CFR Part 64. If excursions occur for more than 5% of the equipment operating time during any
semi

- a nnual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement Plan in accordance with §64.8 of 40
CFR Part 64.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

- RV

- 248

- R 6

– Draft Permit for Public Comment PART IV

– CAM Plans

- page 9



### WESTON POWER PLANT
UNIT 4
COMPLIANCE ASSURANCE MONITORING PROTOCOL
FOR PARTICULAT E MASS EMISSIONS

I. Background

A. Emissions Units

Permit Identification/ Description: W4; coal

- fired utility boiler

Permit Number: 737009020

- P10

Facility: Weston Power Plant Rothschild, WI

B. Applicable Regulation, Emissions Limit, and M onitoring Requirements

Particulate Matter
Emissions Limit 0.02 lb/mmBtu PM (averaged over any consecutive 3

- hour period) and 103.52 lbs/hr (averaged over any consecutive 3

- hour period)
0.018 lb/mmBtu PM 10 

### (averaged over any consecutive 3

- hour peri od)

Current PM and PM 10 

### monitoring requirements for W4 are as noted in applicable Air Pollution Control Operation and Construction permits.

C. Control Technologies C04; Babcock & Wilcox Baghouse

II. Monitoring Approach

The key elements of the mon itoring approach for Unit 4 (including the indicators to be monitored, indicator ranges, and performance criteria) are presented in Table 4.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### Table 4

- Monitoring Approach for Unit 4

Indicator #1 Indicator #2

I. Indicator Baghouse (C04)
Differential Pre ssure. Stack (S04) Opacity.

Measurement Approach The pressure differential is measured by electronic pressure transmitters,
which are located at the
inlet and the outlet of the baghouse. The opacity is measured using a Continuous Opacity Monitoring System (COMS) at the stack for Unit 4 (S04).

II. Indicator Range 2.0 to 10.0 inches of water
column for B04. An
excursion is defined as a differential pressure outside of the range. An opacity in excess of 10% for any consecutive 3

- hour average operating perio d will be considered a CAM
excursion.

III. Performance Criteria Data Representativeness The pressure differential
is a measurement of the
resistance of flow as the gas passes through the filter bag(s) and filter
cake. Pressure
transmitters are located at the inlet and outlet of the dust collector, which reflects the pressure drop
across the entire baghouse. Each pressure
transmitter has a minimum accuracy within 5% of the pressure drop
within 1 inch of water column, whichever is greater. Opacity is re lated to the size and concentration of particles in the flue gas. As particulate mass emissions increase, it can be reasonably expected that stack opacity will also
increase.

Unit 4 (W4) discharges to a
dedicated stack .. The stack is equipped with a CO MS that meets
the installation and minimum acceptable accuracy requirements as specified in the applicable version of 40 CFR 60, Performance Specification 1. The COMS is located downstream of the Baghouse and, therefore, reflects the performance of the co ntrol device ( C04 ) for Unit 4.
Verification of Operational Status Not applicable. Monitoring approach uses existing equipment. Not applicable. Monitoring approach uses existing equipment.

QA/QC Practices and
Criteria Equipment Is repaired/replaced as

n eeded. The equipment is calibrated annually. Calibrate, maintain and operate the
continuous emission monitor in accordance with the performance specifications in 40 CFR Part 75, Appendices A to I and Performance Specification 1 in 40 CFR Part 60, Appendix B.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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Monitoring Frequency Continuously while boiler is operating. Continuous.

Data Collection
Procedures The differential pressure is monitored continuously through the distributed control system (DCS). The COMS collects data and the CEMS data acquisition system reduces the data to each consecutive
3

- hour average periods. Averaging Period No averaging period for differential pressure. Each consecutive 3

- hour period.

IV. Quality Improvement Plan (QIP) If excursions occur for
more than 5% of the equipmen t operating time during any semi

- annual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement
Plan in accordance with §64.8 of 40 CFR Part 64. If excursions occur for more than 5% of the equipm ent operating time during any semi

- annual reporting period, the Wisconsin Department of Natural Resources may require the development of a Quality Improvement Plan in accordance with §64.8 of 40 CFR Part 64.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### WESTON POWER PLANT
MATERIAL HANDLING PROCESS ES
COMPLIANCE ASSURANCE MONITORING PROTOCOL
FOR PARTICULATE MASS EMISSIONS

I. Background

A. Emissions Units

Permit Identification/Description:

• P31A; coal unloading dumper house dust collector A

• P31B; coal unloading dumper house dust collector B

• P31C; junct ion house dust collector

• P32A; W3 and W4 crusher house dust collector A

• P32B; W3 and W4 crusher house dust collector B

• P32D; W3 coal storage silos and cascade conveyor dust collector A

• P32E; W3 coal storage silos and cascade conveyor dust collector B

• P34; W1 &W2 #8 coal transport conveyor dust collector

• P35A; W1 & W2 crusher house dust collector

• P35B; W1 & W2 conveyor C and coal bunker dust collector

• P36A; W3 fly ash silo transfer and handling dust collector

• P36B; W3 fly ash silo bin vent

• P37A; W1 and W2 fly ash silo transfer and handling dust collector

• P30; W4 System 1, New Reclaim Tunnel Exit #34

• P41; W4 System 2, New Junction House 2, #31

• P42; W4 System 3, New Junction House 3, #32

• P43; W4 System 4, Silo Fill System, #7

• P45; W4 System 2, Lime Storage Si lo #27

• P49; W4 System 4 FGD Byproduct Recycle #24

• P50; W4 System 5, FGD Waste Silo #20

( Note: Processes P32C, P37B, P39, P44, P65 and P66 do not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and th erefore are not subject to CAM requirements, pursuant to Part 64, CFR. However, the permittee has
elected to include these emissions units in this CAM Plan for consistency.)



### Permit Number: 737009020

- P10

Facility: Weston Power Plant Rothschild, WIFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### B. Applicable Regulation, Emissions Limit, and Monitoring Requirements

Particulate Matter Emissions Limits and Opacity Limits:

Table 5

– Material Handling Particulate Matter Emission Limits and Opacity Limits

Source Control
Device Description Particul ate Matter
Emission Limit 175

(whichever is more restrictive) 

### Opacity
Limit

P31A C31A Coal Unloading (Collector A) 1.60 lb/hr 10%
P31B C31B Coal Unloading (Collector B) 0.80 lb/hr 10%
P31C C31C Junction House 0.49 lb/hr 10%

P32A C32A W3 & W4 Crusher Hous e (Collector A) 1.09 lb/hr 10%

P32B C32B W3 & W4 Crusher House (Collector B) 1.51 lb/hr 10%

P32C C32C W3 & W4 Crusher House (Collector C ) 0.04 lbs/hr 20%

P32D C32D W3 Coal Storage Silos and Cascade Conveyor (Collector A) 1.76 lb/hr 10%

P32E C32E W3 Co al Storage Silos and Cascade Conveyor (Collector B) 2.21 lb/hr 10%

P34 C34 W1 & W2 #8 Coal Transport Conveyor 0.52 lb/hr 10%

P35A C35A W1 & W2 Crusher House 0.53 lb/hr 10%

P35B C35B W1 & W2 Conveyor C and Coal
Bunker 1.03 lb/hr 10%

P36A C36A W3 Fly Ash Silo Transfer and Handling 0.38 lb/hr 20%

P36B C36B W3 Fly Ash Silo 0.23 lb/hr 20%

P37A C37A W1 & W2 Fly Ash Silo Transfer and Handling 0.58 lb/hr 20%

P37B C37B W1 & W2 Fly Ash Silo Transfer and Handling 0.13 lbs/hr 20%

P39 C39 W3 Flyash Storage Build ing 0.21 lbs/hr 20%

P30 C30 W4 System 1 New Reclaim Tunnel
Exit #34 0.79 lb/hr and .01 gr/dscf 10%

P41 C41 W4 System 2 New Junction House
#31 2.59 lb/hr and .02 gr/dscf 10%

P42 C42 W4 System 3 New Junction House
#32 0.79 lb/hr and .01 gr/dscf 10%

P43 C 43 W4 System 4 Silo Fill #7 3.84 lb/hr and .01 gr/dscf 10%

P44 C44 W4 System 1 Lime Storage Silo
#22 0.10 lbs/hr 10%

P45 C45 W4 System 2 Lime Storage Silo 0.26 lb/hr and .01 10%

175 Weston Power Plant Air Pollution Control Operation Permit 737009020

- P02 provides emissions limits for PM and opacity, but no limits for PM10 are included in the permit. CAM regulations in Part 64.2(a)(1) state that for a unit to b e subject to CAM, it must, among other things, “be subject to an emissions limitation or standard for the applicable regulated air pollutant....” For the purposes of CAM applicability, WPSC has conserva tively assumed that PM is a surrogate for PM 10 . Therefor e, WPSC considered the CAM rule applicable to those sources using a control device that are subject to a PM limit and have
PM 10 potential pre

- control device emissions above 100 tpy.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### #27 gr/dscf

P49 C49 W4 System 4 FGD Byproduct Recycle #24 0.83 lb/hr and .0 2 gr/dscf 10%

P50 C50 W4 System 5 FGD Waste Silo #20 0.326 lb/hr and .02 gr/dscf 10%

P65 C65 W4 PAC Storage Silo 4A 0.21 lb/hr 10%
P66 C66 W4 PAC Storage Silo 4B 0.21 lb/hr 10%
(Note: Processes P32C, P37B, P39, P44, P65 and P66 (shaded in the table ab ove) do not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and therefore are not subject to CAM requirements, pursuant to Part 64, CFR. However, the permittee has elected to include these emissions u nits in this CAM Plan for consistency.)



### C. Control Technologies

Table 6

– Control Technologies Description and Pressure Drop

Source Control
Device Control Device Description Manufacturer’s Recommended
Pressure Differential

P31A C31A Carter Day Dust Collector A 0.5

– 7.0” w.c. A1
0.5

– 8.5” w.c. A2

P31B C31B Carter Day Dust Collector B 0.5

– 7.0” w.c. B1
0.5

– 8.5” w.c. B2

P31C C31C Carter Day Dust Collector 0.5

– 7.0” w.c.
P32A C32A Carter Day Dust Collector 0.5

– 7.0” w.c.
P32B C32B Carter D ay Dust Collector 0.5

– 7.0” w.c.
P32C C32C Carter Day Dust Collector 0.5

– 7.0” w.c.
P32D C32D Carter Day Dust Collector 0.5

– 8.5” w.c.
P32E C32E Carter Day Dust Collector 0.5

– 8.5” w.c.
P34 C34 MAC Equipment Dust Collector 0.5

– 7.0” w.c.
P35A C35 A Flex Kleen 0.5

– 7.0” w.c.
P35B C35B MAC Equipment Dust Collector 0.5

– 7.0” w.c.
P36A C36A United Conveyor Dust Collector 1.0

– 35” w.c.
P36B C36B United Conveyor Dust Collector

- 1.0

– 7.0” w.c.
P37A C37A United Conveyor Dust Collector 0.5

– 25” w.c

. P37B C37B United Conveyor Bin Vent

- 1.0

– 7.0” w.c.
P39 C39 Griffin Filters Dust Collector 0.5

– 8.0” w.c.
P30 C30 Airtrol, Inc. Dust Collector 2.0

– 8.0” w.c.
P41 C41 Airtrol, Inc. Dust Collector 2.0

– 8.0” w.c
P42 C42 Airtrol, Inc. Dust Collector 2.0

– 8.0” w.c
P43 C43 Airtrol, Inc. Dust Collector 2.0

– 8.0” w.c
P44 C44 United Conveyor Bin Vent

- 1.0

– 8.0” w.c.
P45 C45 United Conveyor Bin Vent

- 1.0

– 5.5” w.c
P49 C49 United Conveyor Bin Vent

- 1.0

– 5.5” w.c
P50 C50 United Conveyor Bin Vent

- 1 .0

– 8.0” w.c
P65 C65 Torit Bin Vent

- 1.0

– 5.0” w.c.
P66 C66 Torit Bin Vent

- 1.0

– 5.0” w.c.

(Note: Processes P32C, P37B, P39, P44, P65 and P66 (shaded in the table above) do not have potential pre

- control device particulate
matter emissions that are greater than 100 tons per year and therefore are not subject to CAM requirements, pursuant to Part 64, CFR. However, the permittee has elected to include these emissions units in this CAM Plan for consistency.)FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### II. Monitoring Approach

The key elements of t he monitoring approach for each dust collector (including indicators to be monitored, indicator ranges, and performance criteria) are presented in Table 7.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### Table 7

- Monitoring Approach for Material Handling Dust Collectors

Indicator #1 Indicator #2

I. B ackground A. Emission Units P31A, P31B, P31C, P32A, P32B, P32C, P32D, P32E, P34, P35A, P35B, P36A, P36B, P37A, P36B, P39, P41, P42, P43, P44, P45, P49, P50

, P65, P66 (The data presented in the table applies to each process identified)
II. Monitor ing Approach The key elements of the monitoring approach are presented below

A. Indicator Dust collector Pressure Differential Visible Inspections

B. Measurement Approach The pressure differential is monitored using continuous differential p ressure monitoring at the
dust collector. If pressure differential monitoring indicates the need to complete a visual inspection, one visual inspection will be completed. C. Indicator Range When the process is operating, an alarm will be
set to aler t the operator if the pressure differential is outside the range in Table 6.

Pressure differential outside of the acceptable range (not caused by maintenance activities) will trigger a visual inspection of the exhaust stack and corrective action, if nece ssary. An excursion is defined as any emissions noted as a result of a visual inspection of exhaust stack due to an
alarm in Indicator #1.

D. Quality Improvement Plan (QIP)
Threshold The QIP threshold is nine excursions recorded within a
semi

- annu al (six

- month) period to be reported in the applicable semi

- annual compliance monitoring report
III. Performance Criteria A. Data Representativeness The pressure differential is a measurement of the resistance of flow as the gas passes through the
filter b ag(s) and filter cake. Pressure taps are
located at the inlet and outlet of the dust collector. Visible emissions are related to the size and concentration of particles in the exhaust. A properly operating dust collector system will have no visible
emiss ions. Visible emission observations are made at
the dust collector’s exhaust. B. Verification of Operational Status Not applicable. Monitoring approach uses existing equipment. Not applicable.

C. QA/QC Practices and Criteria Equipment is repaired/repl aced as needed. The equipment is calibrated annually. Not applicable.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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D. Monitoring Frequency Continuous When required by indicator #1
E. Data Collection Procedures The investigative and corrective action taken as a
result of a differentia l pressure alarm will be
documented. If pressure differential monitoring indicates the need to complete a visual inspection, one visual inspection will be completed and documented.

F. Averaging Period No averaging period for the pressure dr op. Not applicable.
(Note: Processes P32C, P37B, P39, P44, P65 and P66 do not have potential pre

- control device particulate matter emissions that are greater than 100 tons per year and therefore are not subject to CAM requirements, pursuant to Part 64, CFR. However, the permittee has elected to include these emissions units in this CAM Plan for consistency.)FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### MONITORING APPROACH JUSTIFICATION FOR UNITS 1 and 2

I. Background

Source Description Weston Power Plant (Weston), located in Rothschild , Wisconsin, is owned and operated by Wisconsin Public Services Corporation (WPSC). Units 1 and 2 are dry

- bottom boilers that burn pulverized coal to provide steam for the generation of electricity. Particulate mass (PM)
emissions from each boiler are cont rolled by dedicated electrostatic precipitators (ESP) located downstream of the air preheater (“cold

- side”).

The Unit 1 and Unit 2 ESPs are identical and consist of one gas path with four (4) transformer

– rectifier sets (TR

- sets). Each TR set consist of 2 isolatable fields side by side capable of isolating
1/8 th 

### of the collection surface at any time. Emissions from Unit 1 ESP and Unit 2 ESP are exhausted through dedicated stacks, S01 and S02, respectively.

Emissions Limits Each unit is subject to a part iculate matter emission limits for fuel burning installations (NR 415.06(2)(c)) . The applicable PM emission limits used in this CAM plan are 0.10 lb/mmBtu and 85.8 pounds per hour for boiler B01 and 0.10 lb/mmBtu and 100 pounds per hour for boiler B02.
T hese limits are found in permit 07

- SDD

- 301.

The applicable opacity emissions limit is 20% and additional information concerning this limit can be found in permit 07

- SDD

- 301.

Monitoring Requirements Weston is required to complete emission testing for part iculate matter for each stack every 24 months unless a waiver from the required biennial testing is received. Weston is also required to record ESP operating parameters once every eight hours or once per day, whichever yields the greater number of measurem ents (NR 439.055(2)(b)).

Each unit is also subject to the Wisconsin opacity monitoring requirements (NR 439.09(9)(a)(2)). Each stack is equipped with a Continuous Opacity Monitoring System (COMS).

Condensable Particulate In conjunction with each complia nce test run, Weston used Other Test Method 028 (OTM

- 28, a.k.a., the dry impinge method, which was EPA’s proposed revision to Method 202 at the time of testing) or Method 202 to determine condensable emissions. The condensable results are
included in the unit emission results in Tables 8 and 9. The average condensable results for Unit 2 (0.005 lb/mmBtu) is lower than the results for Unit 1 (0.016 lb/mmBtu). WPSC has, as a conservative measure, incorporated the estimates of the condensable emissions withi n the indicator range selection process.

II. Rationale for Selection of Performance Indicators and Indicator Ranges

The purpose of this section is to provide technical justification in support of a compliance assurance monitoring protocol using opacity as th e primary indicator for compliance with the applicable PM emissions limit. The COMS will be used as the primary CAM indicator for Unit 1 and Unit 2 at Weston. Particulate testing conducted as part of the permit required complianceFID 737009020; Permit No. 737009020

- P1 3, 737009020

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### testing was used to deter mine the opacity/mass relationship for each affected unit. This relationship was then used to select an opacity indicator range (or CAM trigger value), such that as long as the opacity is maintained at or below this value during normal boiler operation, th e unit will also operate below the applicable PM emissions limit (or, in terms of the CAM rule, that there will be “a reasonable assurance of compliance with emission limitations or standards.”)

Unit 1 and Unit 2, which are each served by a dedicated sta ck, the COMS will be used as the only CAM indicator. The selected indicator range that defines an excursion for Unit 1 will be stack opacity from S01 greater than 19% based on a one

- hour average as measured by the
COMS. The selected indicator range that d efines an excursion for Unit 2 will be stack opacity from S02 greater than 10.5% based on a one

- hour average as measured by the COMS.

WPSC believes that these are appropriate indicator ranges based on the opacity/mass relationships for each unit and that these ranges will provide a conservative compliance margin with the permitted emission limit due to the inclusion of the condensable particulate measurements. All excursions will be documented and reported on a unit basis including the
associated correctiv e action.

Validation of Monitoring Approach

For a coal

- fired boiler equipped with an ESP operating under normal load, the particle size distribution and specific surface area of the particles will remain relatively similar. This means that any change in o pacity, as a first

- order approximation, will be directly proportional to the
mass concentration. 176 

### Therefore, while opacity is not a direct measurement of PM, it can be used as a surrogate. If opacity is increasing, it can be reasonably expected that the PM concentration is also increasing.

The physics of the opacity meter are based on Lambert’s Law, which can be expressed mathematically by the following equation:

4 

### 1 x avg m avg S


### e O −



### − =



### Where: O = opacity of flue gas

S avg 

### = specific surface area of the particles (m 2 

### /g)

m avg 

### = particulate mass concentration (g/Nm 3 

### )

x = optical path length (m)

WPSC notes that the use of opacity as a CAM indicator for PM is considered presumptively acceptable under §64.3(d) of the Rule, provided there is sufficient data to show that this indicator range is appropriate. That is, the opacity indicator range must demonstrate a reasonable assurance of compliance with the applicable PM standard.

176 Parker, K.R., Applied Electrostatic PrecipitationFID 737009020; Permit No. 737009020

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### Validation of Indicator Ranges 

### PM emission test results from previous compliance tests wer e used to validate the selection of the monitoring approach and indicator range.

For each compliance test, the boilers were operated at normal full load. This represents the highest level of PM emissions and will produce conservative indicator ranges und er the proposed CAM approach. Each test consisted of at least three runs using EPA Reference Method 5 and Other Test Method (OTM) 28 or Method 202. Boiler and ESP operating data were also recorded to demonstrate stable, normal load operation during each te st.

Unit 1 Results Table 8 shows a summary of the compliance test results for Unit 1. For the 2005 compliance test, the data shows an average opacity of 13.24% and an average total PM emission rate of 0.0787 lb/mmBtu. For the 2009 compliance test, the dat a shows an average opacity of 4.52% and an average total PM emission rate of 0.0571 lb/mmBtu. The average test data shows 32% margin of compliance with the total PM emission limit of 0.10 lb/mmBtu.

Table 8

- Unit 1 Compliance Test Results

Test Date Stack Opacity [%] Filterable
PM
Emissions [lb/mmBtu] Condensable
PM
Emissions [lb/mmBtu] Total
PM
Emissions [lb/mmBtu]
12/21/2005 13.53 0.0675 0.0115 0.0790
12/21/2005 13.41 0.0643 0.0146 0.0789
12/21/2005 12.78 0.0608 0.0174 0.0782
8/25/2009 4.39 0.0402 0. 0064 0.0466
8/25/2009 4.46 0.0395 0.0300 0.0695
8/25/2009 4.70 0.0354 0.0199 0.0553

Figure 1 shows the opacity/unit mass relationship for Unit 1 for the compliance tests. A linear curve fit was produced with a chi

- square goodness of fit (r 2 

### ) result of 0.72.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### Unit 1 Opacity/Mass Relationship

y = 0.0025x + 0.046

R 2 = 0.7237

0 0.02 0.04 0.06 0.08

0.1

0 5 10 15 20 25

Opacity (%)Total PM (lb/mmBtu)



### Figure 1

– Unit 1 Opacity/Mass Relationship [lb/mmBtu]

The results suggest that an opacity indicator range of 19% (based on a one

- hour average) for Unit 1 would provide a reasonable assurance of compliance with the PM emission limit.

Unit 2 R esults Table 9 shows a summary of the compliance test results for Unit 2. For the 2005 compliance test, the data shows an average opacity of 8.69% and an average total PM emission rate of 0.072 lb/mmBtu. For the 2009 compliance test, the data shows an aver age opacity of 6.5% and an average total PM emission rate of .0392 lb/mmBtu. The average test data shows a 44% margin of compliance with the total PM emission limit.

Table 9

- Unit 2 Compliance Test Results

Test Date Stack Opacity [%] Filterable
PM
Emissi ons [lb/mmBtu] Condensable
PM
Emissions [lb/mmBtu] Total
PM
Emissions [lb/mmBtu]
12/22/2005 8.63 0.0523 0.0059 0.0582
12/22/2005 8.63 0.0771 0.0045 0.0817
12/22/2005 8.81 0.0729 0.0043 0.0772
8/27/2009 6.53 0.0338 0.0036 0.0374
8/27/2009 6.39 0.0325 0 .0074 0.0399
8/27/2009 6.61 0.0308 0.0096 0.0404

Figure 2 shows the opacity/unit mass relationship for Unit 2 for the compliance tests. A linear curve fit was produced with a chi

- square goodness of fit (r 2 

### ) result of 0.84.FID 737009020; Permit No. 737009020

- P1 3, 737009020

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### Unit 2 Opacity/Mass Relationship

y = 0.0152x - 0.0599

R 2 

### = 0.8469

0 0.02 0.04 0.06 0.08

0.1

0 5 10 15 20
Opacity (%)Total PM (lb/mmBtu)



### Figure 2

– Unit 1 Opacity/M ass Relationship [lb/mmBtu]

The results suggest that an opacity indicator range of 10.5% (based on a one

- hour average) for Unit 2 would provide a reasonable assurance of compliance with the PM emission limit.

Validation of Averaging Periods
The PM limits in the Weston operating permit do not allow for averaging periods. The PM stack tests utilized to establish the correlation between particulate matter emissions and opacity were conducted using three (3) one

- hour test runs. Opacity is being used as a surrogate to demonstrate compliance with particulate matter emission limits and the data available shows a correlation on

a one

- hour average. In this case the data availability and limitations of the COMS equipment are
taken into account.

Corrective Action
U pon detecting an excursion, Weston will implement corrective action to restore the indicator to below the indicator range. Corrective action will begin with an evaluation of the monitoring system to determine if the excursion is related to the monitoring s ystem or the control device. To the extent possible, any corrective action should reduce the potential of similar excursions from recurring.

Reporting Requirements All excursions must be reported in the plant’s semi

- annual Title V compliance report. Westo n will include the date and time of each excursion and a description of the corrective action that was performed.

The Wisconsin Department of Natural Resources (DNR) may request a quality improvement plan (QIP) if the number of excursions exceeds 5% of t he operating time during any semi

- annual reporting period. 177



### Recordkeeping Requirements Weston will retain all monitoring data and support information for a period of at least five years from the data of the monitoring sample, measurement, report or applic ation.

177 The 5% QIP trigger is suggested in §64.8 of 40 CFR Part 64.FID 737009020; Permit No. 737009020

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### Conclusions According to §64.4(b), the use of a COMS to demonstrate a reasonable assurance of compliance with a PM standard is considered “presumptively acceptable” for CAM. Presumptively acceptable monitoring approaches are considered by EPA to be acceptable for CAM and do not require additional justification. Furthermore, WPSC believes that the compliance test data convincingly demonstrate that the proposed monitoring approach and the selected indicator ranges meet the design requirements of §64 .3 for Units 1 and 2.

During normal operation, compliance test data shows that the two units operate well below their respective PM emissions limits. During a potential ESP failure, where the opacity may reach the trigger level, a 5% margin of compliance w ith the PM emission limit is still maintained.

An excursion, which is a reportable event under the CAM Rule, will be defined to meet the following criteria:

• For Unit 1 , a stack opacity greater than 19% for one

- hour average

.

• For Unit 2 , a stack opacity gr eater than 10.5% for any one

- hour average.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### MONITORING APPROACH JUSTIFICATION FOR UNITS 3 and 4

I. Background

Source Description Weston Power Plant (Weston), located in Rothschild, Wisconsin is owned and operated by Wisconsin Public Services Corpor ation (WPSC). Unit 3 (B03) is a tangentially

- fired boiler that burns pulverized coal to provide steam for the generation of electricity. Unit 4 (B04) is a supercritical pulverized coal

- fired boiler that burns pulverized coal to provide steam for the

gener ation of electricity. Both units are equipped with a baghouse to control particulate matter emissions.

Emission Limits Each unit is subject to a particulate matter emission limits for fuel burning installations (NR 415.06(2)(c)). Boiler B03 is subject to the more restrictive New Source Performance Standard (NSPS) emission limitations of s. NR 440.19(3)(a)1., Wis. Adm. Code. The applicable PM emission limit used in the CAM plan for B03 is 0.10 lb/mmBtu and 342.3 lbs/hr. Boiler B04 is subject to the mor e restrictive NSPS emission limitation of s. NR 440.20(3), Wis. Adm. Code and a more restrictive PSD BACT limitation of s. NR 405.08(2), Wis. Adm. Code. The applicable PM and PM10 emission limits for B04 are 0.02 and 0.018 lb/mmBtu, respectively. These e mission limitations are found in permits 06

- SDD

- 102 (B03) and 03

- RV

- 248

- R4 (B04). The applicable opacity emission limit for both units is 20% and additional information concerning this limit can be found in 06

- SDD

- 102 (B03) and 03

- RV

- 248

- R4 (B04).

Monito ring Requirements Weston is required to complete emission testing for particulate matter for each stack every 24 months unless a waiver from the required biennial testing is received. Weston is also required to record baghouse pressure differential once ev ery eight operating hours or once per day, whichever yields the greater number of measurements (NR 439.055(1)(a)). Weston currently monitors baghouse performance through continuous measurement of baghouse differential pressure. The boilers are equipped w ith pressure sensors located upstream and downstream of the baghouse, which are used to calculate the pressure drop across the entire baghouse.

The units are subject to the Wisconsin opacity monitoring requirements (NR 439.09(9)(a)(2)). Each stack is eq uipped with a Continuous Opacity Monitoring System (COMS).

Compliance test data shows that each boiler operates well below the total PM and applicable PM10 emissions limits during normal operation (Tables 10, 11 and 12). The test data shows that the ave rage test results for Weston 3 represent an 83% margin of compliance with the total PM emissions limit of 0.10 lb/mmBtu. The test data for Weston 4 shows that the average test results for total PM represent a 59% margin of compliance with the 0.02 lb/mmBt u limit and the average test results for total PM 10 

### represent a 50% margin of compliance with the 0.018 lb/mmBtu limit.

Condensable Particulate In conjunction with each compliance test run, WPSC used Other Test Method 028 (OTM

- 28, a.k.a., the dry impinger method, which was EPA’s proposed revision to Method 202 at the time of testing) or Method 202 to determine condensable emissions. The condensable results are included in the unit emission results in Tables 10, 11, and 12. WPSC has, as a conservative

mea sure, elected to incorporate the estimates of the condensable emissions within the indicator range selection process.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### II. Rationale for Selection of Performance Indicators and Indicator Ranges

The purpose of this section is to provide technical justification in support of a compliance assurance monitoring protocol using differential pressure across each baghouse as the primary indicator and opacity as a secondary indicator for compliance with the applicable PM/PM 10 

### emissions limits. Units 3 and 4 are each equ ipped with a baghouse to control particulate matter emissions.. These baghouses utilize fabric filters to capture particulate matter emissions . In fabric filtration, particulate matter

- laden flue gases flow into and through a number of filter bags, leavin g the particulate retained on the fabric. The fabric itself performs a portion of the filtering, but its main role is to be the foundational media for a filter cake to form on its surface. The filter cake is responsible for the efficient filtering of fin e particulate. Differential pressure across a baghouse provides a good indication of proper operation and the effectiveness of a baghouse in capturing particulate matter. A properly operating baghouse is effective in achieving 99%or greater capture (contro l efficiency) of filterable particulate matter 178



### .
The pressure differential data collected by the plant DCS during the particulate matter compliance testing conducted as part of the applicable permit requirements and the testing performed per EPA inform ation collection request (ICR) was used to validate the manufacturer (OEM) recommended pressure differential ranges for the baghouses. This data validated the OEM recommended operational pressure differential ranges for the baghouses to ensure compliance w ith the applicable PM emissions limits (or, in terms of the CAM rule, that there will be “a reasonable assurance of compliance with emission limitations or standards.”)

The COMS will be used as the secondary CAM indicator for these Units. The opacity ind icator range was selected based on a review of the opacity data recorded during the compliance tests and Unit historical opacity data. Each unit historically operates below the selected ranges. The opacity under normal operation varies with load and oper ating conditions. Variability is typically a gradual increase or decrease, with occasional sudden spikes or dips most often seen during cleaning cycles. A sudden and sustained increase above the selected range could indicate a potential problem with the baghouse. As stated in 64.3(a)(2), affected sources will also monitor control device bypass operation. Because the opacity monitor is located downstream of the baghouse, any bypass operation will be indicated in the measured opacity so additional bypass monitoring is not required.

Validation of Monitoring Approach
For a coal

- fired boiler equipped with a baghouse operating under normal load, the particle size distribution and specific surface area of the particles will remain relatively similar. In genera l, baghouses are designed to operate at a relatively constant pressure drop during steady

– state boiler operation. Monitoring pressure drop provides a means of detecting a change in operation that could lead to an increase in emissions. An increase in pre ssure differential is indicative of fabric blinding or decreased permeability and a decrease in pressure differential is indicative of a change in operation such as broken bags which could also be indicated by the presence of increased opacity, load change s or low

- load operation.

Opacity is a good indicator of PM concentration if exhaust gas. A change in opacity, as a first

order approximation, will be directly proportional to the particulate mass concentration. At normal steady load conditions, if opac ity increases, it can be reasonably expected that the PM concentration is also increasing.

178 EPA Air Pollution Cost Control Manual, Sixth Edition, Section 6, Chapter 1 (EPA/452/B

- 02

- 001)FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### Validation of Indicator Ranges PM and PM10 (S04) compliance and ICR tests were used to validate the selection of the monitoring approach and indicator ranges.

Duri ng each compliance and ICR test, the boilers were operated at normal full load. This represents the highest level of PM emissions and will produce conservative indicator ranges under the proposed CAM approach. Each test consisted of at least three runs u sing EPA Reference Method 5, and Other Test Method 28 or Method 202.

The indicator range for pressure differential for each baghouse was based on manufacturer recommendations which take into account the filter media, particulate characteristics and the operation of the boiler. Lower loads on the boiler will result in lower pressure differential readings, whereas higher loads will result in higher pressure differential readings (and greater emissions). The pressure differential data in Tables 10, 11 and 12, recorded by the plant DCS during the PM and PM10 compliance and ICR tests demonstrated that during high load operation the baghouse pressure differentials are within the manufacturer recommended ranges and the total PM and PM10 (S04) emissions are bel ow the applicable limits.

Each Unit has an applicable opacity limit of 20%. However, each Unit operates well below this opacity limit during normal operations. Since the Units operate well below 20% opacity limit, a range of 10% was chosen to indicate potential abnormal operation of the baghouse or possible control equipment bypass situation.

Unit 3 Results Table 10 shows a summary of the compliance and the EPA ICR test results for Unit 3. The test data show that the Unit is in compliance with the 0. 1 lb/mmBtu emission limitation while operating within the selected indicator ranges for pressure differential and stack opacity.

Table 10

– Unit 3 Compliance Test Results

Test
Date Pres.
Diff. A Side Pres.
Diff. B Side Opacity Filterable PM
Emissions [l b/mmBtu) Condensable
PM Emissions

[lb/mmBtu) Total PM
Emissions [lb/mmBtu]



### 12/20/05 7.47 7.64 0.88 0.0076 0.0166 0.0242
12/20/05 7.50 7.66 0.89 0.0113 0.0337 0.045
12/20/05 7.60 7.50 0.90 0.0111 0.017 0.0281
08/14/09 7.23 6.96 0.39 0.0034 0.021 0 0.0244
08/14/09 7.42 6.93 0.48 0.0033 0.0209 0.0242
08/14/09 7.52 6.79 0.39 0.0020 0.0028 0.0048
05/04/10 6.89 6.58 0.73 0.0020 0.0023 0.0043
05/05/10 6.52 6.71 0.60 0.0038 0.0027 0.0065
05/06/10 7.18 6.85 0.60 0.0035 0.0086 0.0120

Unit 4 Results Tables 11 and 12 show a summary of the compliance and the EPA ICR test results for Unit 4. The test data show that the Unit is in compliance with the 0.02 lb/mmBtu total PM and 0.018FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### lb/mmBtu total PM 10 

### emission limitations while operating within the sel ected indicator ranges for pressure differential and stack opacity.

Table 11

– Unit 4 PM Compliance Test Results

Test
Date Pres. Diff. A Side Pres. Diff. B Side Opacity Filterable PM
Emissions [lb/mmBtu) Condensable
PM Emissions

[lb/mmBtu) Total PM Emis sions [lb/mmBtu]



### 07/09/08 6.58 6.58 1.61 0.0040 0.0041 0.0081
07/09/08 6.60 6.61 1.60 0.0094 0.0039 0.0134
07/09/08 6.55 6.56 1.54 0.0084 0.0032 0.0116
05/11/10 6.91 7.00 0.40 0.0004 0.0054 0.0058
05/12/10 6.94 7.05 0.39 0.0006 0.0037 0.0043
05/13/10 6.94 7.05 0.28 0.0006 0.0051 0.0057

Table 12

– Unit 4 PM 10 

### Compliance Test Results

Test
Date Pres. Diff. A Side Pres. Diff. B Side Opacity Filterable
PM 10 

### Emissions [lb/mmBtu) Condensable
PM 10 

### Emissions [lb/mmBtu) Total PM 10 

### Emissions [lb/mmBt u]



### 07/10/08 6.57 6.59 1.57 0.0009 0.0150 0.0160
07/10/08 6.57 6.59 1.53 0.0008 0.0090 0.0100
07/10/08 6.55 6.60 1.50 0.0018 0.0110 0.0120
05/11/10 6.91 7.00 0.40 0.0009 0.0054 0.0064
05/12/10 6.94 7.05 0.39 0.0008 0.0037 0.0045
05/13/10 6.94 7.05 0.28 0.0003 0.0051 0.0055

Validation of Averaging Periods The PM limits in the Weston operating permit do not allow for averaging periods for boiler B03. The PM stack tests utilized to establish the correlation between particulate matter emissions and opacity were conducted using three (3) one

- hour test runs. Opacity is being used as a surrogate to demonstrate compliance with particulate matter emission limits and the data available shows a
correlation on a one

- hour average. In this case the data availability and limitations of the COMS equipment are taken into account.

The BACT particulate matter emission limitations in the current permit for boiler B04 includes a
3

- hour averaging period. Therefore compliance with the emission limitation is dete rmined “as averaged over any consecutive 3

- hour period”. In this case a 3

- hour rolling average for the opacity performance indicator may be appropriate.

An averaging period is not appropriate for parametric monitoring such as the baghouse differential pr essure drop monitoring for the baghouses controlling B03 and B04.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### Corrective Action Upon detecting an excursion, Weston will implement corrective action to restore the indicator to below the indicator range. Corrective action will begin with an eval uation of the monitoring system to determine if the excursion is related to the monitoring system or the control device. To the extent possible, any corrective action should reduce the potential of similar excursions from recurring.

Reporting Requirements All excursions will be reported in the semi

- annual Title V compliance report. Weston will include the date and time of each excursion and a description of the corrective action that was performed.

The Wisconsin DNR may request a quality improvement plan (QIP) if the number of excursions exceeds 5% of the operating time during any semi

- annual reporting period. 179



### Recordkeeping Requirements Weston will retain all monitoring data and support information for a period of at least five years
from the data of th e monitoring sample, measurement, report or application.

Conclusions According to §64.4(b), the use of a pressure differential and COMS to demonstrate a reasonable assurance of compliance with a PM standard is considered “presumptively acceptable” for C AM. Presumptively acceptable monitoring approaches are considered by EPA to be acceptable for CAM and do not require additional justification. The appropriate section of the EPA CAM guidance document is attached for reference. Furthermore, WPSC believes t hat the compliance and ICR test data convincingly demonstrate that the proposed monitoring approach and the selected indicator ranges meet the design requirements of §64.3 for Units 3 and 4.

During normal operation, compliance and ICR test data shows that the two Units operate well below their respective PM emissions limits. As stated previously, CAM does not apply to the condensable emissions from these units. WPSC has, nonetheless, elected to evaluate the indicator ranges based on the inclusion of conde nsable emissions, which provides a conservative

measure.

An excursion, which is a reportable event under the CAM Rule, will be defined to meet the following criteria:

• For Unit 3 , an OEM recommended pressure differential above 10 or below 2
inches of water column for any one

- hour average, or a stack opacity greater than
10% for any one

- hour average.

• For Unit 4 , an OEM recommended pressure differential above 10 or below 2
inches of water column for any 3

- hour rolling average or a stack opacity greater
than 1 0% for any 3

- hour rolling average.

179 The 5% QIP trigger is suggested in §64.8 of 40 CFR Part 64.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### MONITORING APPROACH JUSTIFICATION FOR MATERIAL HANDLING

I. Background

Source Description Weston Power Plant, located in Rothschild, Wisconsin, is owned and operated by Wisconsin Public Service Corporat ion (WPSC). Material handling Processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P34, P35A, P35B, P36A, P36B, P37A, P41, P42, P43, P45, P49, P50 and their associated control devices have been identified as processes that are subject to CAM based
on determ inations by the Wisconsin Department of Natural Resources (WDNR).

Emissions Limits Processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P35A, and P35B are subject to the particulate matter emission limits for processes in NR 415.05(2), Wis. Adm. Code, or m ore stringent permit

- specific requirements. Process P34 is subject to the particulate matter emission limit in NR 415.05(1)(m), Wis. Adm. Code, or more stringent permit

- specific requirements. Processes P41, P42, P43, P45, P49 and P50 are subject to the li mits in NR 415.06(2)(c) and NR 405.08, Wis. Adm. Code, or more stringent permit specific requirements. The applicable opacity emissions limit is 10% for processes P31A, P31B, P31C, P32A, P32B, P32D, P32E, P34, P35A, P35B, P41, P42, P43, P45, P49 and P50 an d 20% for processes P36A, P36B, and P37A.

Monitoring Requirements WPSC is required to monitor the operation of air pollution control systems per requirements in Air Pollution Control Operation Permit 737009020

- P02 and Air Pollution Control Construction
P ermit 03

- RV

- 248

- R4. Pressure differential is identified in NR 439.055(2)(b)1, Wis. Adm. Code, as the operational variable of interest for dust collector systems. WPSC currently monitors the pressure differential across each dust collector listed in this pl an on a continuous basis during process operation. Alarms are initiated if the pressure differential is outside of the acceptable ranges identified in Table 6. Records are maintained of any visual inspections performed on each
exhaust stack.

II. Justificatio n

Rationale for Selection of Performance Indicators

The purpose of this section is to provide technical justification in support of a compliance assurance monitoring protocol using a combination of pressure differential and visible emission inspections as the indicator for compliance with the applicable PM emissions limit.

In general, dust collectors are designed to operate over a relatively small range of pressure differential. Pressure differential across the dust collector system is a measurement of t he resistance to flow as the particulate

- laden gas stream passes through the filter bag(s) and filter cake. Low gas flow, insufficient filter cake, and loose or broken filter bags are typical causes of low pressure differential. While low gas flow may caus e a low differential pressure alarm, low process gas flow is unlikely to cause an exceedance of the particulate emission limitation. High gas flow or excess filter cake build

- up are typical causes of high pressure differential. While excess filter cake may cause a high differential pressure alarm, it is unlikely to cause an exceedance of the particulate emission limitation. These examples illustrate that while differential pressure is a useful indicator for dust collector performance, it must be used inFID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### con junction with visible inspections to provide a more reliable indicator of control equipment
failures.

The design pressure differential ranges and performance guarantees for each control device have been provided by the equipment manufacturer. If control equipment is operated outside of the normal pressure differential ranges (not caused by maintenance activities), one visual inspection will be completed to determine if an excursion has occurred or if normal process variations are the cause of the high or low differential pressure measurement. An excursion only occurs if an
alarm is received and visible emissions are observed during the visual inspection.

Rationale for Selection of Indicator Ranges Validation of Indicator Ranges Particulate testing has b een completed on selected baghouse systems while operating within the manufacturer’s designed pressure drop ranges as shown in Table 13. All emission results were below the permitted emission limit.

The requirement to monitor pressure differential and re spond to values outside of the ranges specified in Table 6 has been in place since the issuance of the Air Pollution Control Operation
Permit 737009020

- P02 and Construction Permit 03

- RV

- 248

- R4. Currently the pressure
differential alarms that have occurred have resulted in no visible emissions being recorded

. This indicates proper operation of the control device.

Corrective Action Upon receiving a pressure differential alarm WPSC will complete a visual inspection for stack exhaust emissions. Any visible emi ssions noted as a result of an alarm will be considered an excursion and corrective action will be taken to restore control device operation. To the extent possible, any corrective action should reduce the potential of similar excursions from recurring.

R eporting Requirements All visible emissions that are noted and result from a pressure drop alarm will be considered an excursion, documented and reported in the plant’s semi

- annual Title V compliance reports.
WPSC must include the date and time of each exc ursion and a description of the corrective action that was performed.

Recordkeeping Requirements WPSC must retain all monitoring data and support information for a period of at least five years from the date of the monitoring sample, measurement, report or application. If more than 9 excursions occur (on a per source basis) during a reporting period, WPSC will develop a Quality Improvement Plan in accordance with §64.8 of 40 CFR Part 64.

Conclusions Operation of the baghouse systems within the pressure d rop ranges specified in Table 6 provides reasonable assurance of compliance with the applicable PM emission limit during normal operation. One visual inspection will be completed any time the baghouse system is operated outside of the pressure drop ranges specified in Table 6.FID 737009020; Permit No. 737009020

- P1 3, 737009020

- P16 & 03

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### Table __13__

- Emission Testing for Select Material Handling Sources

Source Control
Device Description Particulate
Matter Emission
Limit1 180

(whichever is more restrictive) 

### Emission
Test Results (Year of Testing) Pressure
Different ial During Testing

P31A C31A Coal Unloading (Collector A) 1.60 lb/hr 1.439 lb/hr (2006) A 1 

### 1.6 to 2.2
A 2 

### 2.3 to 4.0

P31B C31B Coal Unloading (Collector B) 0.80 lb/hr .677 lb/hr (2006) B 1 

### 3.9 to 6.7
B 2 

### 3.8 to 5.7

P30 C30 W4 System 1 New
Reclaim Tunn el Exit
#34 0.79 lb/hr and .01 gr/dscf .29 lb/hr; .0098 gr/dscf (2008) 3.4 to 3.5

P41 C41 W4 System 2 New
Junction House #31 2.59 lb/hr and .02 gr/dscf 1.05 lb/hr; .0085 gr/dscf (2008) 2.4 to 2.6

P42 C42 W4 System 3 New
Junction House #32 0.79 lb/hr an d .01 gr/dscf .28 lb/hr; .0059 gr/dscf (2008) 2.3 to 3.0

P43 C43 W4 System 4 Silo
Fill #7 3.84 lb/hr and .01 gr/dscf 2.51 lb/hr; .01 gr/dscf (2008) 4.5

P45 C45 W4 System 2 Lime Storage Silo #27 0.26 lb/hr and .01 gr/dscf .07 lb/hr; .0028 gr/dscf (2008) 0 .7 to 1.6

P49 C49 W4 System 4 FGD Byproduct Recycle
#24 0.83 lb/hr and .02 gr/dscf .022 lb/hr; .0031 gr/dscf (2008) - 0.6 to 1.7

P50 C50 W4 System 5 FGD
Waste Silo #20 0.326 lb/hr and .02 gr/dscf .04 lb/hr; .0032 gr/dscf (2008) - 0.4 to 1.1

180 The emission limits listed in this table do not include the applicable averaging periods. In addition, Weston Power Plant Air Pollution Control Operation Permit 737009020

- P02 provides emissions limits for PM and opacity, but no limits for PM10 are included in the permit. CAM regulations in Part 64.2(a)(1) sta te that for a unit to be subject to CAM, it must, among other things, “be subject to an emissions limitation or standard for the applicable regulated air pollutant....” For the purposes of CAM applicability, WPSC has conservatively assumed that PM is a

surro gate for PM 10 . Therefore, WPSC considered the CAM rule applicable to those sources using a control device that are subject to a PM limit
and have PM 10 potential pre

- control device emissions above 100 tpy.