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Draft Air Individual Permit Major Amendment 03700003-101

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Draft Air Individual Permit Major Amendment 03700003-101 Permittee: Xcel Energy - Black Dog Facility name: Xcel Energy - Black Dog 1400 Black Dog Rd E Burnsville, MN 55337 Dakota County Operating permit issuance date: April 1, 2014 Expiration date: April 1, 2019 Major Amendment: [Amendment Issue Date] Stage 1 issuance date – Authorization to Construct and Operate: [month day, year] Stage 2 issuance date – Major Amendment: [Amendment Issue Date] Permit characteristics: Federal; Part 70/ Major for NSR; Limits to avoid NSR The emission units, control equipment and emission stacks at the stationary source authorized in this permit amendment are as described in the Permit Applications Table. The conditions included in Stage 1 of this permit action are effective on the Stage 1 Issuance Date shown above. Stage 1 conditions authorize construction and modification of the facility and the operation of the modified emissions units at the address listed above until final action is taken on Stage 2. Air Emission Permit No. 03700003-011 remains effective until the Stage 2 Issue Date. Beginning on the Stage 2 Issue date Air Emission Permit No. 03700003-101 supersedes Air Emission Permit No. 03700003-011 and authorizes the Permittee to modify the stationary source at the address listed above unless otherwise noted in the permit. The Permittee must comply with all the conditions of the permit. Any changes or modifications to the stationary source must be performed in compliance with Minn. R. 7007.1150 to 7007.1500. Terms used in the permit are as defined in the state air pollution control rules unless the term is explicitly defined in the permit. Unless otherwise indicated, all the Minnesota rules cited as the origin of the permit terms are incorporated into the SIP under 40 CFR § 52.1220 and as such as are enforceable by EPA Administrator or citizens under the Clean Air Act.
Transcript
Page 1: Draft Air Individual Permit Major Amendment 03700003-101

Draft

Air Individual Permit

Major Amendment

03700003-101 Permittee: Xcel Energy - Black Dog

Facility name: Xcel Energy - Black Dog 1400 Black Dog Rd E Burnsville, MN 55337 Dakota County

Operating permit issuance date: April 1, 2014 Expiration date: April 1, 2019 Major Amendment: [Amendment Issue Date] Stage 1 issuance date – Authorization to Construct and Operate: [month day, year] Stage 2 issuance date – Major Amendment: [Amendment Issue Date] Permit characteristics: Federal; Part 70/ Major for NSR; Limits to avoid NSR The emission units, control equipment and emission stacks at the stationary source authorized in this permit amendment are as described in the Permit Applications Table. The conditions included in Stage 1 of this permit action are effective on the Stage 1 Issuance Date shown above. Stage 1 conditions authorize construction and modification of the facility and the operation of the modified emissions units at the address listed above until final action is taken on Stage 2. Air Emission Permit No. 03700003-011 remains effective until the Stage 2 Issue Date. Beginning on the Stage 2 Issue date Air Emission Permit No. 03700003-101 supersedes Air Emission Permit No. 03700003-011 and authorizes the Permittee to modify the stationary source at the address listed above unless otherwise noted in the permit. The Permittee must comply with all the conditions of the permit. Any changes or modifications to the stationary source must be performed in compliance with Minn. R. 7007.1150 to 7007.1500. Terms used in the permit are as defined in the state air pollution control rules unless the term is explicitly defined in the permit. Unless otherwise indicated, all the Minnesota rules cited as the origin of the permit terms are incorporated into the SIP under 40 CFR § 52.1220 and as such as are enforceable by EPA Administrator or citizens under the Clean Air Act.

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Stage 1 Issuance Approval:

Signature: [Type e-Signature] This document has been electronically signed. for the Minnesota Pollution Control Agency

Don Smith, P.E. Section Manager Air Quality Permits Section Industrial Division

Stage 2 Issuance Approval:

Signature: [Type e-Signature] This document has been electronically signed. for the Minnesota Pollution Control Agency

Don Smith Section Manager Air Quality Permits Section Industrial Division

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Table of Contents

Page

1. Permit applications table ............................................................................................................................................. 4 2. Where to send submittals ............................................................................................................................................ 5 3. Facility description ....................................................................................................................................................... 6 4. Summary of subject items ........................................................................................................................................... 7 5. Limits and other requirements .................................................................................................................................. 10 6. Submittal/action requirements ................................................................................................................................. 84 7. Appendices ................................................................................................................................................................. 91

Appendix A. Insignificant Activities and General Applicable Requirements ............................................................ 91 Appendix B. Parameters used for SIL analysis ......................................................................................................... 92 Appendix C. Transport Rule (TR) Trading Program Title V Requirements ............................................................... 93 Appendix D. Acid Rain Applications and Retired Unit Exemptions .......................................................................... 96

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1. Permit applications table Subsequent permit applications: Title description Application receipt date Action number Title V Permit – Reissuance 03/21/2012 03700003-011 Major Amendment 10/15/2015 03700003-101 Minor Amendment 03/02/2015 03700003-101

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Permit issued: [month day, year] 03700003-101 Permit expires: [month day, year] Page 5 of 118

2. Where to send submittals

Send submittals that are required to be submitted to the U.S. EPA regional office to: Chief Air Enforcement Air and Radiation Branch EPA Region V 77 West Jackson Boulevard Chicago, Illinois 60604

Each submittal must be postmarked or received by the date specified in the applicable Table. Those submittals required by Minn. R. 7007.0100 to 7007.1850 must be certified by a responsible official, defined in Minn. R. 7007.0100, subp. 21. Other submittals shall be certified as appropriate if certification is required by an applicable rule or permit condition.

Send submittals that are required by the Acid Rain Program to:

U.S. Environmental Protection Agency Clean Air Markets Division 1200 Pennsylvania Avenue NW (6204N) Washington, D.C. 20460

Send any application for a permit or permit amendment to:

Fiscal Services – 6th Floor Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155-4194

Also, where required by an applicable rule or permit condition, send to the Permit Document Coordinator notices of:

a. Accumulated insignificant activities b. Installation of control equipment c. Replacement of an emissions unit, and d. Changes that contravene a permit term

Unless another person is identified in the applicable Table, send all other submittals to:

AQ Compliance Tracking Coordinator Industrial Division Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155-4194

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3. Facility description

The Xcel Energy - Black Dog (Facility) is located at 1400 Black Dog Rd E in Burnsville, MN, Dakota County, Minnesota. Xcel Energy - Black Dog is an electric generating plant. The facility is composed of a natural gas-fired combined cycle gas turbine with duct burner, two emergency generators, one fire pump, and an auxiliary boiler. The main pollutants of concern are nitrogen oxides (NOx), carbon monoxide (CO), and carbon dioxide equivalent (CO2e) emitted from the combined cycle gas turbine. The turbine is equipped with low-NOx burners and NOx emissions are controlled by selective catalytic reduction (SCR). This permit action is major amendment with a minor amendment. Construction of a new simple cycle combustion turbine is authorized by this permit action. The main pollutants of concern from the new turbine are NOx, CO, and CO2e. The new turbine Unit 6 will be equipped with low-NOx burners. The major amendment also incorporates the April 2015 decommissioning of two coal fired units, Unit 3 (EU003) and Unit 4 (EU004), and the cessation of all coal-related activities. The minor amendment is to add requirements for the auxiliary boiler to the permit. The auxiliary boiler was installed in 2015 to provide heat to facility, a role that was previously filled by the coal-fired boilers.

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4. Summary of subject items

SI ID: Description

Relationship Type

Related SI ID: Description

ACTV5: All IA's COMG10: HAP Limits

has members

EQUI1, EQUI62, EQUI92

COMG11: Unit 6 CEMS Required by Acid Rain and NSPS Regulations

has members

EQUI93, EQUI94

COMG1: Emergency Engine Generators

has members

EQUI60, EQUI61, STRU29, STRU30

COMG3: Unit 5/2 CEMS Required by Acid Rain and NSPS Regulations

has members

EQUI44, EQUI45

COMG8: Combustion Turbine/Duct Burner Combined Requirements

has members

EQUI1, EQUI44, EQUI45, EQUI46, EQUI62, STRU32, TREA37, TREA38

EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

sends to STRU32: Combustion Turbine w/DLN & SCR; Duct Burners w/SCR Stack

EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

is controlled in parallel by

TREA37: Unit 5/2 Selective Catalytic Reduction

EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

is controlled in parallel by

TREA38: Unit 5/2 Dry-Low NOx combustion

EQUI27: Unit 5/2 and Unit 6 DAS

receives from

EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective

SI ID: Description

Relationship Type

Related SI ID: Description Catalytic Reduction)

EQUI27: Unit 5/2 and Unit 6 DAS

receives from

EQUI62: Unit 5/2 Duct Burner

EQUI27: Unit 5/2 and Unit 6 DAS

receives from

EQUI92: Unit 6 Simple Cycle Combustion Turbine

EQUI44: Unit 5/2 NOx Dual Range Monitor

monitors EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

EQUI44: Unit 5/2 NOx Dual Range Monitor

sends to EQUI27: Unit 5/2 and Unit 6 DAS

EQUI44: Unit 5/2 NOx Dual Range Monitor

monitors EQUI62: Unit 5/2 Duct Burner

EQUI45: Unit 5/2 O2 Monitor

monitors EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

EQUI45: Unit 5/2 O2 Monitor

sends to EQUI27: Unit 5/2 and Unit 6 DAS

EQUI45: Unit 5/2 O2 Monitor

monitors EQUI62: Unit 5/2 Duct Burner

EQUI46: Unit 5/2 CO Dual Range Monitor

monitors EQUI1: Unit 5/2 Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

EQUI46: Unit 5/2 CO sends to EQUI27: Unit

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SI ID: Description

Relationship Type

Related SI ID: Description

Dual Range Monitor 5/2 and Unit 6 DAS

EQUI46: Unit 5/2 CO Dual Range Monitor

monitors EQUI62: Unit 5/2 Duct Burner

EQUI60: Emergency Engine Generator EEG-61001

sends to STRU29: Emergency Engine Generator EQUI60 Stack

EQUI61: Emergency Engine Generator EEG-61002

sends to STRU30: Emergency Engine Generator EQUI61 Stack

EQUI62: Unit 5/2 Duct Burner

sends to STRU32: Combustion Turbine w/DLN & SCR; Duct Burners w/SCR Stack

EQUI62: Unit 5/2 Duct Burner

is controlled in parallel by

TREA37: Unit 5/2 Selective Catalytic Reduction

EQUI62: Unit 5/2 Duct Burner

is controlled in parallel by

TREA38: Unit 5/2 Dry-Low NOx combustion

EQUI6: Breaker Building (Coal Conveying)

EQUI90: Fire Pump sends to STRU31: Fire Pump Stack

EQUI91: Auxiliary Boiler

sends to STRU34: Auxiliary Boiler Stack

EQUI92: Unit 6 Simple Cycle Combustion Turbine

sends to STRU35: Unit 6 Combustion Turbine Stack

EQUI92: Unit 6 Simple Cycle Combustion Turbine

is controlled by

TREA39: Unit 6 Dry-Low NOx combustion

EQUI93: Unit 6 NOx Monitor

sends to EQUI27: Unit 5/2 and Unit 6 DAS

EQUI93: Unit 6 NOx Monitor

monitors EQUI92: Unit 6 Simple Cycle Combustion Turbine

SI ID: Description

Relationship Type

Related SI ID: Description

EQUI94: Unit 6 O2 Monitor

sends to EQUI27: Unit 5/2 and Unit 6 DAS

EQUI94: Unit 6 O2 Monitor

monitors EQUI92: Unit 6 Simple Cycle Combustion Turbine

FUGI15: Natural gas leakage from connections serving combustion turbine & total facility

FUGI16: Fugitive emissions associated with breakers serving combustion turbine & total facility

STRU10: Gas Compressor Building

STRU1: Plant Building

STRU29: Emergency Engine Generator EQUI60 Stack

STRU2: Maintenance Building

STRU30: Emergency Engine Generator EQUI61 Stack

STRU31: Fire Pump Stack

STRU32: Combustion Turbine w/DLN & SCR; Duct Burners w/SCR Stack

STRU34: Auxiliary Boiler Stack

STRU35: Unit 6 Combustion Turbine Stack

STRU4: Dumper Building

STRU6: Warehouse STRU7: Substation Control Building

STRU8: Screen

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SI ID: Description

Relationship Type

Related SI ID: Description

House STRU9: Stock Room TFAC2: Xcel Energy - Black Dog

TREA37: Unit 5/2 Selective Catalytic Reduction

SI ID: Description

Relationship Type

Related SI ID: Description

TREA38: Unit 5/2 Dry-Low NOx combustion

TREA39: Unit 6 Dry-Low NOx combustion

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5. Limits and other requirements Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation TFAC 2 03700003 Xcel Energy -

Black Dog

5.1.1 Permit Appendices: This permit contains appendices as listed in the permit Table of Contents. The Permittee shall comply with all requirements contained in Appendices A (Insignificant Activities and General Applicable Requirements), C (Transport Rule (TR) Trading Program Title V Requirements), and D (Acid Rain Applications and Retired Unit Exemptions). Modeling parameters in Appendix B (Parameters used for SIL analysis) are included for reference only. [Minn. R. 7007.0800, subp. 2]

5.1.2 PERMIT SHIELD: Subject to the limitations in Minn. R. 7007.1800, compliance with the conditions of this permit shall be deemed compliance with the specific provision of the applicable requirement identified in the permit as the basis of each condition. Subject to the limitations of Minn. R. 7007.1800 and 7017.0100, subp. 2, notwithstanding the conditions of this permit specifying compliance practices for applicable requirements, any person (including the Permittee) may also use other credible evidence to establish compliance or noncompliance with applicable requirements. This permit shall not alter or affect the liability of the Permittee for any violation of applicable requirements prior to or at the time of permit issuance. [Minn. R. 7007.1800, (A)(2)]

5.1.3 These requirements apply if a reasonable possibility (RP) as defined in 40 CFR Section 52.21(r)(6)(vi) exists that a proposed project, analyzed using the actual-to-projected-actual (ATPA) test (either by itself or as part of the hybrid test at Section 52.21(a)(2)(iv)(f)) and found to not be part of a major modification, may result in a significant emissions increase (SEI). If the ATPA test is not used for the project, or if there is no RP that the proposed project could result in a SEI, these requirements do not apply to that project. The Permittee is only subject to the Preconstruction Documentation requirement for a project where a RP occurs only within the meaning of Section 52.21(r)(6)(vi)(b). Even though a particular modification is not subject to New Source Review (NSR), or where there isn't a RP that a proposed project could result in a SEI, a permit amendment, recordkeeping, or notification may still be required by Minn.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation R. 7007.1150 - 7007.1500. [Minn. R. 7007.0800, subp. 2, Title I Condition: 40 CFR 52.21(r)(6) and Minn. R. 7007.3000]

5.1.4 Preconstruction Documentation -- Before beginning actual construction on a project, the Permittee shall document the following: 1. Project description 2. Identification of any emission unit whose emissions of an NSR pollutant could be affected 3. Pre-change potential emissions of any affected existing emission unit, and the projected post-change potential emissions of any affected existing or new emission unit. 4. A description of the applicability test used to determine that the project is not a major modification for any regulated NSR pollutant, including the baseline actual emissions, the projected actual emissions, the amount of emissions excluded due to increases not associated with the modification and that the emission unit could have accommodated during the baseline period, an explanation of why the amounts were excluded, and any creditable contemporaneous increases and decreases that were considered in the determination. The Permittee shall maintain records of this documentation. [Minn. R. 7007.0800, subps. 4-5, Minn. R. 7007.1200, subp. 4, Title I Condition: 40 CFR 52.21(r)(6) and Minn. R. 7007.3000]

5.1.5 The Permittee shall monitor the actual emissions of any regulated NSR pollutant that could increase as a result of the project and that were analyzed using the ATPA test, and the potential emissions of any regulated NSR pollutant that could increase as a result of the project and that were analyzed using potential emissions in the hybrid test. The Permittee shall calculate and maintain a record of the sum of the actual and potential (if the hybrid test was used in the analysis) emissions of the regulated pollutant, in tons per year on a calendar year basis, for a period of 5 years following resumption of regular operations after the change, or for a period of 10 years following resumption of regular operations after the change if the project increases the design capacity of or potential to emit of any unit associated with the project. [Minn. R. 7007.0800, subps. 4-5, Title I Condition: 40 CFR 52.21(r)(6) and Minn. R. 7007.3000]

5.1.6 Before beginning actual construction of any project which includes any electric utility steam generating unit (EUSGU), the Permittee shall submit a copy of the preconstruction documentation (items 1-4 under Preconstruction Documentation, above) to the Agency. [Minn. R. 7007.0800, subps. 4-5, Title I Condition: 40 CFR 52.21(r)(6)(ii) and Minn. R. 7007.3000]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.1.7 For any project which includes any EUSGU, the Permittee

must submit an annual report to the Agency, within 60 days after the end of the calendar year. The report shall contain: a. The name and ID number of the facility, and the name and telephone number of the facility contact person. b. The quantified annual emissions analyzed using the ATPA test, plus the potential emissions associated with the same project analyzed as part of a hybrid test. c. Any other information, such as an explanation as to why the summed emissions differ from the preconstruction projection, if that is the case. [Minn. R. 7007.0800, subps. 4-5, Title I Condition: 40 CFR 52.21(r)(6)and Minn. R. 7007.3000]

5.1.8 For any project which does not include any EUSGU, the Permittee must submit a report to the Agency if the annual summed (actual, plus potential used in hybrid test) emissions differ from the preconstruction projection and exceed the baseline actual emissions by a significant amount as listed at 40 CFR Section 52.21(b)(23). Such report shall be submitted to the Agency within 60 days after the end of the year in which the exceedances occur. The report shall contain: a. The name and ID number of the facility, and the name and telephone number of the facility contact person. b. The annual emissions (actual, plus potential if any part of the project was analyzed using the hybrid test) for each pollutant for which the preconstruction projection and significant emissions rate is exceeded. c. Any other information, such as an explanation as to why the summed emissions differ from the preconstruction projection. [Minn. R. 7007.0800, subps. 4-5, Title I Condition: 40 CFR 52.21(r)(6)and Minn. R. 7007.3000]

5.1.9 The Permittee shall comply with National Primary and Secondary Ambient Air Quality Standards, 40 CFR pt. 50, and the Minnesota Ambient Air Quality Standards, Minn. R. 7009.0010 to 7009.0080. Compliance shall be demonstrated upon written request by the MPCA. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subps. 1-2, Minn. R. 7009.0010-7009.0080, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

5.1.10 Circumvention: Do not install or use a device or means that conceals or dilutes emissions, which would otherwise violate a federal or state air pollution control rule, without reducing the total amount of pollutant emitted. [Minn. R. 7011.0020]

5.1.11 Air Pollution Control Equipment: Operate all pollution control equipment whenever the corresponding process equipment and emission units are operated. [Minn. R. 7007.0800, subp. 16(J), Minn. R. 7007.0800, subp. 2]

5.1.12 Operation and Maintenance Plan: Retain at the stationary source an operation and maintenance plan for all air

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation pollution control equipment. At a minimum, the O & M plan shall identify all air pollution control equipment and control practices and shall include a preventative maintenance program for the equipment and practices, a description of (the minimum but not necessarily the only) corrective actions to be taken to restore the equipment and practices to proper operation to meet applicable permit conditions, a description of the employee training program for proper operation and maintenance of the control equipment and practices, and the records kept to demonstrate plan implementation. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 16(J)]

5.1.13 Operation Changes: In any shutdown, breakdown, or deviation the Permittee shall immediately take all practical steps to modify operations to reduce the emission of any regulated air pollutant. The Commissioner may require feasible and practical modifications in the operation to reduce emissions of air pollutants. No emissions units that have an unreasonable shutdown or breakdown frequency of process or control equipment shall be permitted to operate. [Minn. R. 7019.1000, subp. 4]

5.1.14 Fugitive Emissions: Do not cause or permit the handling, use, transporting, or storage of any material in a manner which may allow avoidable amounts of particulate matter to become airborne. Comply with all other requirements listed in Minn. R. 7011.0150. [Minn. R. 7011.0150]

5.1.15 Noise: The Permittee shall comply with the noise standards set forth in Minn. R. 7030.0010 to 7030.0080 at all times during the operation of any emission units. This is a state only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. [Minn. R. 7030.0010-7030.0080]

5.1.16 Inspections: The Permittee shall comply with the inspection procedures and requirements as found in Minn. R. 7007.0800, subp. 9(A). [Minn. R. 7007.0800, subp. 9(A)]

5.1.17 The Permittee shall comply with the General Conditions listed in Minn. R. 7007.0800, subp. 16. [Minn. R. 7007.0800, subp. 16]

5.1.18 Performance Testing: Conduct all performance tests in accordance with Minn. R. ch. 7017 unless otherwise noted in this permit. [Minn. R. ch. 7017]

5.1.19 Performance Test Notifications and Submittals: Performance Tests are due as outlined in this permit. Performance Test Notification (written): due 30 days before each Performance Test Performance Test Plan: due 30 days before each Performance Test Performance Test Pre-test Meeting: due 7 days before each Performance Test

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Performance Test Report: due 45 days after each Performance Test Performance Test Report - Microfiche Copy: due 105 days after each Performance Test The Notification, Test Plan, and Test Report may be submitted in an alternative format as allowed by Minn. R. 7017.2018. [Minn. R. 7017.2018, Minn. R. 7017.2030, subps. 1-4, Minn. R. 7017.2035, subps. 1-2]

5.1.20 Limits set as a result of a performance test (conducted before or after permit issuance) apply until superseded as stated in the MPCA's Notice of Compliance letter granting preliminary approval. Preliminary approval is based on formal review of a subsequent performance test on the same unit as specified by Minn. R. 7017.2025, subp. 3. The limit is final upon issuance of a permit amendment incorporating the change. [Minn. R. 7017.2025, subp. 3]

5.1.21 Monitoring Equipment Calibration - The Permittee shall either: 1. Calibrate or replace required monitoring equipment every 12 months; or 2. Calibrate at the frequency stated in the manufacturer's specifications. For each monitor, the Permittee shall maintain a record of all calibrations, including the date conducted, and any corrective action that resulted. The Permittee shall include the calibration frequencies, procedures, and manufacturer's specifications (if applicable) in the Operations and Maintenance Plan. Any requirements applying to continuous emission monitors are listed separately in this permit. [Minn. R. 7007.0800, subp. 4(D)]

5.1.22 Operation of Monitoring Equipment: Unless noted elsewhere in this permit, monitoring a process or control equipment connected to that process is not necessary during periods when the process is shutdown, or during checks of the monitoring systems, such as calibration checks and zero and span adjustments. If monitoring records are required, they should reflect any such periods of process shutdown or checks of the monitoring system. [Minn. R. 7007.0800, subp. 4(D)]

5.1.23 Recordkeeping: Retain all records at the stationary source, unless otherwise specified within this permit, for a period of five (5) years from the date of monitoring, sample, measurement, or report. Records which must be retained at this location include all calibration and maintenance records, all original recordings for continuous monitoring instrumentation, and copies of all reports required by the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation permit. Records must conform to the requirements listed in Minn. R. 7007.0800, subp. 5(A). [Minn. R. 7007.0800, subp. 5(C)]

5.1.24 Recordkeeping: Maintain records describing any insignificant modifications (as required by Minn. R. 7007.1250, subp. 3) or changes contravening permit terms (as required by Minn. R. 7007.1350, subp. 2), including records of the emissions resulting from those changes. [Minn. R. 7007.0800, subp. 5(B)]

5.1.25 If the Permittee determines that no permit amendment or notification is required prior to making a change, the Permittee must retain records of all calculations required under Minn. R. 7007.1200. For expiring permits, these records shall be kept for a period of five years from the date the change was made or until permit reissuance, whichever is longer. The records shall be kept at the stationary source for the current calendar year of operation and may be kept at the stationary source or office of the stationary source for all other years. The records may be maintained in either electronic or paper format. [Minn. R. 7007.1200, subp. 4]

5.1.26 Shutdown Notifications: Notify the Commissioner at least 24 hours in advance of a planned shutdown of any control equipment or process equipment if the shutdown would cause any increase in the emissions of any regulated air pollutant. If the owner or operator does not have advance knowledge of the shutdown, notification shall be made to the Commissioner as soon as possible after the shutdown. However, notification is not required in the circumstances outlined in Items A, B and C of Minn. R. 7019.1000, subp. 3. At the time of notification, the owner or operator shall inform the Commissioner of the cause of the shutdown and the estimated duration. The owner or operator shall notify the Commissioner when the shutdown is over. [Minn. R. 7019.1000, subp. 3]

5.1.27 Breakdown Notifications: Notify the Commissioner within 24 hours of a breakdown of more than one hour duration of any control equipment or process equipment if the breakdown causes any increase in the emissions of any regulated air pollutant. The 24-hour time period starts when the breakdown was discovered or reasonably should have been discovered by the owner or operator. However, notification is not required in the circumstances outlined in Items A, B and C of Minn. R. 7019.1000, subp. 2. At the time of notification or as soon as possible thereafter, the owner or operator shall inform the Commissioner of the cause of the breakdown and the estimated duration. The owner or operator shall notify the Commissioner when the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation breakdown is over. [Minn. R. 7019.1000, subp. 2]

5.1.28 Notification of Deviations Endangering Human Health or the Environment: As soon as possible after discovery, notify the Commissioner or the state duty officer, either orally or by facsimile, of any deviation from permit conditions which could endanger human health or the environment. [Minn. R. 7019.1000, subp. 1]

5.1.29 Notification of Deviations Endangering Human Health or the Environment Report: Within 2 working days of discovery, notify the Commissioner in writing of any deviation from permit conditions which could endanger human health or the environment. Include the following information in this written description: 1. the cause of the deviation; 2. the exact dates of the period of the deviation, if the deviation has been corrected; 3. whether or not the deviation has been corrected; 4. the anticipated time by which the deviation is expected to be corrected, if not yet corrected; and 5. steps taken or planned to reduce, eliminate, and prevent reoccurrence of the deviation. [Minn. R. 7019.1000, subp. 1]

5.1.30 Application for Permit Amendment: If a permit amendment is needed, submit an application in accordance with the requirements of Minn. R. 7007.1150 through Minn. R. 7007.1500. Submittal dates vary, depending on the type of amendment needed. Upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150 - 7007.1500]

5.1.31 Extension Requests: The Permittee may apply for an Administrative Amendment to extend a deadline in a permit by no more than 120 days, provided the proposed deadline extension meets the requirements of Minn. R. 7007.1400, subp. 1(H). Performance testing deadlines from the General Provisions of 40 CFR pt. 60 and pt. 63 are examples of deadlines for which the MPCA does not have authority to grant extensions and therefore do not meet the requirements of Minn. R. 7007.1400, subp. 1(H). [Minn. R. 7007.1400, subp. 1(H)]

5.1.32 Emission Inventory Report: due on or before April 1 of each calendar year following permit issuance, to be submitted on a form approved by the Commissioner. [Minn. R. 7019.3000-7019.3100]

5.1.33 Emission Fees: due 30 days after receipt of an MPCA bill.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation [Minn. R. 7002.0005-7002.0095]

5.1.34 The Permittee must submit a Risk Management Plan (RMP) under 40 CFR pt. 68. Each owner or operator of a stationary source, at which a regulated substance is present above a threshold quantity in a process, shall design and implement an accidental release prevention program. A full update and resubmission of the RMP is required at least once every five years. The five-year anniversary date is reset whenever the Permittee fully updates and resubmits their RMP. The last full update of the RMP was completed on March 27, 2012. Submit RMPs to the Risk Management Plan Reporting Center, P.O. Box 1515, Lanham-Seabrook, Maryland 20703-1515. RMP information may be obtained at http://www.epa.gov/swercepp or by calling 1-800-424-9346. [40 CFR pt. 68]

5.1.35 The Permittee shall not have engines that meet section (1)(iii) under the definition of Nonroad Engine at 40 CFR Section 1068.30 in one location within the stationary source for more than 12 consecutive months. A location is any single site at a building, structure, facility, or installation. Any engine, or engines, that replaces an engine at a location and that is intended to perform the same or similar function as the engine it replaced will be included in calculating the consecutive time period. [40 CFR 1068.30]

5.1.36 For a nonroad engine that is excluded from any requirements of 40 CFR Part 1068 because it is a stationary engine, the Permittee may not move it or install it in any mobile equipment, except as allowed by the provisions of 40 CFR Part 1068. The Permittee may not circumvent or attempt to circumvent the residence-time requirements of Section (2)(iii) of the Nonroad Engine definition at 40 CFR Section 1068.30. [40 CFR 1068.101(b)(3)]

5.1.37 The Permittee shall conduct an inventory of all engines on-site that meet section (1)(iii) under the definition of Nonroad Engine at 40 CFR Section 1068.30, once each calendar quarter; inventories shall not take place in consecutive months. This applies to nonroad engines that are owned by the Permittee, or rented and operated by the Permittee, or brought onsite and operated by a vendor or contractor. The inventory shall include the following: 1) Date that the nonroad engine is inventoried. 2) Identification number. 3) Function of the nonroad engine (e.g. compressor, welder). 4) Location of the engine within the stationary source.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5) Statement that the nonroad engine has not been located in a single location for 12 consecutive months, and movement between locations has not been for purposes of circumvention of residence time requirements of section (2)(iii) under the definition of Nonroad Engine at 40 CFR Section 1068.30. [40 CFR 1068.30(nonrd engn)(1)(iii), Minn. R. 7007.0800, subps. 4-5]

5.1.38 A nonroad engine ceases to be a nonroad engine and becomes a new stationary engine if: 1. At any time, it meets the criteria specified in section (2)(iii) under the definition of Nonroad Engine in 40 CFR Section 1068.30. For example, a portable generator engine ceases to be a nonroad engine if it is used or will be used in a single specific location for 12 months or longer. If the Administrator or the Permitting authority determines that an engine will be or has been used in a single specific location for 12 months or longer, it ceased to be a nonroad engine when it was placed in that location. OR 2. It is otherwise regulated by a federal New Source Performance Standard promulgated under section 111 of the Clean Air Act (42 U.S.C. 7411). [40 CFR 1068.31(e)]

COMG 1 GP001 Emergency

Engine Generators

5.2.1 Operating Hours <= 816 hours per year 12-month rolling sum for the combined operating hours of EQUI60 and EQUI61. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.2.2 Nitrogen Oxides <= 35.3 tons per year 12-month rolling sum for the combined NOx emissions from EQUI60 and EQUI61. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.2.3 Operating Hours: Daily Recordkeeping: For each engine, on each day that the engine is operated, record the number of hours operated. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.2.4 Daily Recordkeeping: Each day that the engine is operated, record the number of operating hours that were non-emergency and were not routine testing and maintenance. [Minn. R. 7007.0800, subps. 4-5]

5.2.5 Operating Hours: Monthly Recordkeeping: By the 20th day of each month, the Permittee shall calculate and record the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation following: 1) The total Operating Hours for the previous calendar month using the daily records. 2) The 12 month rolling sum Operating Hours for the previous 12 month period ("OO" in the equation below) by summing the monthly Operating Hours data for the previous 12 months. 3) The total non-emergency, non-routine testing and maintenance hours operated during the previous calendar month. 4) The total non-emergency, non-routine testing and maintenance hours operated during the previous 12 calendar months. [Minn. R. 7007.0800, subps. 4-5]

5.2.6 Nitrogen Oxides: Monthly Recordkeeping: By the 20th day of each month, the Permittee shall calculate and record the 12-month rolling sum Nitrogen Oxides using the following equation: NOx = OO x EF x 16.58 x 0.0005 Where: NOx = the 12-month rolling sum NOx emissions (tons/year) OO = the 12-month rolling sum operating hours, calculated as described above (hours/year) . EF = the most current emission factor published in AP-42 (4.41 lb/MMBtu at the time of permit issuance) 16.58 = engine capacity (MMBtu/hour) 0.0005 = 1 ton/2000 lb. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

COMG 3 GP005 Unit 5/2 CEMS

Required by Acid Rain and NSPS Regulations

5.3.1 The CEMS requirements listed below outline the typical standards of 40 CFR pt. 60 and pt. 75 when combined with Minn. R. Additional monitoring requirements may also apply to the facility based on this combination of standards and it is

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation the responsibility of the Facility to meet all applicable requirements. [Minn. R. 7007.0800, subp. 2]

5.3.2 Continuous Operation: CEMS must be operated and data recorded during all periods of emission unit operation including periods of emission unit start-up, shutdown, or malfunction except for periods of acceptable monitor downtime. This requirement applies whether or not a numerical emission limit applies during these periods. A CEMS must not be bypassed except in emergencies where failure to bypass would endanger human health, safety, or plant equipment. Acceptable monitor downtime includes reasonable periods as listed in Items A, B, C and D of Minn. R. 7017.1090, subp. 2. [40 CFR 60.13(e), Minn. R. 7017.1090, subp. 1]

5.3.3 CEMS Monitor Design: Each CEMS shall be designed to complete a minimum of one cycle of sampling, analyzing, and data recording in each 15-minute period. [40 CFR 60.13(e)(2), 40 CFR 75.10(d)(1)]

5.3.4 CEMS Certification/Recertification Test: due 120 days after the first calendar quarter following CEMS installation/reinstallation. [40 CFR 60.13(b), Minn. R. 7017.1050, subp. 1]

5.3.5 CEMS Certification/Recertification: The Permittee shall ensure that each CEMS required by 40 CFR pt. 75 meets the initial certification requirements of 40 CFR section 75.20 and shall ensure that all applicable initial certification tests under 40 CFR Section 75.20(c) are completed by the deadlines specified in 40 CFR Section 75.4 and prior to use in the Acid Rain Program. In addition, whenever the Permittee installs a continuous emission monitoring system in order to meet the requirements of Sections 75.11 through 75.18, where no continuous emission monitoring system was previously installed, initial certification is required. The Permittee shall certify all CEMS required by the Acid Rain Program in accordance with 40 CFR pt. 75, Appendix A, Section 6. [40 CFR 75.20, 40 CFR pt. 75, Appendix A(Sect 6)]

5.3.6 Certification Test Plan due 30 days before Certification Test. Certification Test Pretest Meeting due 7 days before Certification Test. Certification Test Report - Microfiche Copy due 105 days after Certification Test. Certification Test Report due 45 days after Certification Test. The Notification, Test Plan, and Test Report may be submitted in alternate format as allowed by Minn. R. 7017.1120, subp. 2. [40 CFR 60.7(a)(5), 40 CFR 75.61, Minn. R. 7017.1060, subp. 1-3, Minn. R. 7017.1080, subp. 1-4]

5.3.7 Certification Application: The Permittee shall apply for certification of each continuous emission monitor used under the Acid Rain Program. The Permittee shall submit the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation certification application in accordance with 40 CFR Section 75.60 and each complete certification application shall include the information specified in 40 CFR Section 75.63. [40 CFR 75.20(a)(2), 40 CFR 75.60(b)(1), 40 CFR 75.63]

5.3.8 CEMS QA/QC: The Permittee is subject to the performance specifications listed in 40 CFR pt. 60, Appendix B and shall operate, calibrate, and maintain each CEMS according to the QA/QC procedures in 40 CFR pt. 60, Appendix F as amended and maintain a written QA/QC program available in a form suitable for inspection. (Note 40 CFR Part 75 has a standard regarding this requirement as well). [40 CFR 60.13(a), 40 CFR pt. 60, Appendix F]

5.3.9 CEMS QA/QC: The Permittee shall operate, calibrate, and maintain each CEMS according to the QA/QC procedures in 40 CFR pt. 75, Appendix B as amended. (Note 40 CFR Part 60 has a standard regarding this requirement as well). [40 CFR 75.21]

5.3.10 40 CFR Pt. 75 Monitoring Data: Hourly averages shall be computed using at least one data point in each fifteen minute quadrant of an hour, where the unit combusted fuel during that quadrant of an hour. Notwithstanding this requirement, an hourly average may be computed from at least two data points separated by a minimum of 15 minutes (where the unit operates for more than one quadrant of an hour) if data are unavailable as a result of the performance of calibration, quality assurance, or preventive maintenance activities pursuant to 40 CFR Section 75.21 and pt. 75, Appendix B, or backups of data from the data acquisition and handling system, or recertification, pursuant to Section 75.20. The owner or operator shall use all valid measurements or data points collected during an hour to calculate the hourly averages. All data points collected during an hour shall be, to the extent practicable, evenly spaced over the hour. (Note 40 CFR pt. 60 has a standard regarding this requirement) [40 CFR 75.10(d)(1)]

5.3.11 NSPS Monitoring Data: Reduce all NSPS-required continuous monitoring systems other than COMS data to 1-hour averages, in accordance with 40 CFR Section 60.13(h). (Note 40 CFR pt. 75 has a standard regarding this requirement as well) [40 CFR 60.13(h), Minn. R. 7017.1160, subps. 1-2]

5.3.12 CEMS Daily Calibration Drift Test: Check the zero (low level value between 0 and 20 percent of span value) and span (50 to 100 percent of span value) calibration drifts at least once daily. The zero and span must, at a minimum, be adjusted whenever the drift exceeds two times the limit specified in 40 CFR pt. 60, Appendix B. 40 CFR pt. 60, Appendix F, Section 4.3.1 shall be used to determine out-of-control periods for

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation CEMS. [40 CFR 60.13(d)(1), 40 CFR pt. 60, Appendix F, 4.1, Minn. R. 7017.1170, subp. 3]

5.3.13 Daily Calibration Error (CE) Test: Conduct daily CE testing of each gas monitoring system according to the procedures in Section 6.3.1 of 40 CFR pt. 75, Appendix A and of each flow monitoring system according to the procedures in Section 6.3.2 of Appendix A. (Note 40 CFR pt. 60 has a standard regarding this requirement as well.). [40 CFR pt. 75, Appendix B (Sect 2.1)]

5.3.14 RATA Notification: due 30 days before CEMS Relative Accuracy Test Audit (RATA). [Minn. R. 7017.1180, subp. 2]

5.3.15 Cylinder Gas Audit (CGA) Results Summary: due 30 days after end of each calendar quarter in which a CGA was conducted. [Minn. R. 7017.1180, subp. 1]

5.3.16 The Permittee shall submit a Linearity Test Results Summary: due 30 days after end of each calendar quarter in which a Linearity Test was conducted. [Minn. R. 7017.1180, subp. 4]

5.3.17 Relative Accuracy Test Audit (RATA) Results Summary: due 30 days after end of each calendar quarter in which a RATA was conducted. [Minn. R. 7017.1180, subp. 3]

5.3.18 Recordkeeping: The Permittee shall maintain for each affected unit a file of all measurements, data, reports, and other information required by this part at the source in a form suitable for inspection for at least three (3) years from the date of each record. The file shall contain all information required by 40 CFR Section 75.57. [40 CFR 75.57]

5.3.19 Recordkeeping: The Permittee shall retain records of all CEMS monitoring data and support information for a period of five years from the date of the monitoring sample, measurement or report. Records shall be kept at the source. [40 CFR 60.7(f), Minn. R. 7017.1130]

5.3.20 Quarterly Reports: Electronically report the data and information in 40 CFR Section 75.64 (a), (b), and (c) to the Administrator quarterly. [40 CFR 75.64]

COMG 8 GP007 Combustion

Turbine/Duct Burner Combined Requirements

5.4.1 Nitrogen Oxides <= 4.5 parts per million 3-hour block average by volume on a dry basis at 15% oxygen. This limit applies at all times under all operating conditions, except during startup, shutdown, and malfunction. Each calendar day is composed of eight consecutive 3-hour time blocks starting at midnight. Each 3-hour block average is determined by averaging all 1-minute averages during

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation operation other than startup, shutdown, or malfunction, to determine the 15-minute average. The 15-minute averages are averaged to produce a 1-hour average, and the 1-hour averages are used to calculate the 3-hour block average. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.2 Nitrogen Oxides <= 100 parts per million by volume on a dry basis at 15% oxygen. This limit applies only during startup, shutdown, and malfunction. If the startup process ends with a failed start, then a NOx ppmvd concentration limit does not apply. However, NOx mass emissions (lb/hr) during a failed start are included in the 12-month rolling sum NOx emissions calculations. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.3 Nitrogen Oxides <= 305 tons per year 12-month rolling sum. This limit applies at all times under all operating conditions, including startup, shutdown, and malfunction. [Title I Condition: 40 CFR 52.21(k)(modeling) & Minn. R. 7007.3000]

5.4.4 Carbon Monoxide <= 25 parts per million 3-hour block average by volume on a dry basis at 15% oxygen, during operation of EQUI1 (combustion turbine) except during startup, shutdown, or malfunction, and EQUI62 is in operation during the same 3-hour time block. Each calendar day is composed of eight consecutive 3-hour time blocks starting at midnight. Each 3-hour block average is determined by averaging all 1-minute averages during operation other than startup, shutdown, or malfunction, to determine the 15-minute average. The 15-minute averages are averaged to produce a 1-hour average, and the 1-hour averages are used to calculate the 3-hour block average. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.5 Carbon Monoxide <= 18 parts per million 3-hour block average by volume on a dry basis at 15% oxygen during operation of EQUI1 (combustion turbine) except during startup, shutdown, or malfunction, and EQUI62 is not in operation during the same 3-hour time block. Each calendar day is composed of eight consecutive 3-hour time blocks starting at midnight. Each 3-hour block average is determined by averaging all 1-minute averages during operation other than startup, shutdown, or malfunction, to determine the 15-minute average. The 15-minute averages are averaged to produce a 1-hour average, and the 1-hour averages are used to calculate the 3-hour block average. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.6 Carbon Monoxide <= 400 tons per year 12-month rolling sum.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation This limit applies at all times under all operating conditions, except during startup and shutdown. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.7 PM < 10 micron <= 29.4 pounds per hour 3-hour average. This limit applies at all times under all operating conditions, except during startup, shutdown, or malfunction. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.8 Volatile Organic Compounds <= 0.0073 pounds per million Btu heat input when EQUI1 (combustion turbine) is operating at or above 70% load, with or without EQUI62 in operation. When EQUI62 is operating simultaneously with EQUI1, the limit is equal to 17.7 lb/hr; the calculated potential to emit of EQUI1 and EQUI62 combined is approximately 17.5 lb/hr. When only EQUI1 is operating, the limit is equal to 14.0 lb/hr; the calculated potential to emit of EQUI1 is approximately 4.8 lb/hr. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.9 Startup, Shutdown, and Malfunction have the same meanings as in 40 CFR Section 60.2; see Subject Item EQUI1 for further startup/shutdown definitions for the combustion turbine. For any emission limit not applicable during startup and shutdown, that limit does not apply: 1. during the initial 180 minutes after fuel combustion commences in the combustion turbine if the steam turbine-generator was offline for less than 12 hours; 2. during the initial 300 minutes after fuel combustion commences in the combustion turbine if the steam turbine-generator was offline for 12 to 60 hours; 3. during the initial 480 minutes after fuel combustion commences in the combustion turbine if the steam turbine-generator was offline for more than 60 hours; 4. during the final 120 minutes of turbine fuel combustion. Steam turbine-generator online operation of less than 60 minutes duration shall be considered offline for startup determination purposes and is not included in items 1, 2, and 3 above. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.10 The Permittee shall operate and maintain TREA37 at all times that EQUI1 and/or EQUI62 is in operation. The Permittee shall document periods of non-operation of the control equipment. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000, Title I Condition: 40 CFR 52.21(k)(modeling)& Minn. R. 7007.3000]

5.4.11 Measure or calculate SO2 and CO2 emission rates for EQUI1

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation and EQUI62 in accordance with 40 CFR pt. 75. [40 CFR 75.10, Minn. R. 7007.0800, subp. 4]

5.4.12 Emissions Monitoring: The owner or operator shall use a NOx CEMS to measure NOx emissions from STRU32. Additional monitoring requirements are also located at Subject Item COMG3. [40 CFR 60.334(c), 40 CFR 72.9(b), Minn. R. 7011.0560, Minn. R. 7011.2350, Minn. R. 7017.1010, subp. 1, Title I Condition: 40 CFR 52.21(k)(modeling) & Minn. R. 7007.3000]

5.4.13 Emissions Monitoring: The owner or operator shall use a CO CEMS to measure CO emissions from STRU32. Additional monitoring requirements are also located at Subject Item COMG3. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.14 Operating Load and Operating Conditions Monitoring: Continuously monitor (at the same frequency as the CO monitor sampling rate) and record the heat input (mmBtu/hr) for EQUI1 and EQUI62 using the method specified at 40 CFR Part 75, Appendix F. Calculate and record the average hourly operating load as a percent of maximum possible load for the specific compressor inlet conditions. Monitor and record the times and duration of any "off normal" operating condition (startup, shutdown, or malfunction) defined above. Record the start and stop time of all steam turbine-generator on-line and off-line operation. [Minn. R. 7007.0800, subp. 4, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.4.15 By the 15th day of each month, calculate and record monthly NOx emissions and the annual 12-month rolling sum. The rolling sum shall be calculated by adding the current month's emission totals with those for the previous 11 months. [Minn. R. 7007.0800, subps. 4-5]

5.4.16 By the 15th day of each month, calculate and record monthly CO emissions and the annual 12-month rolling sum. The rolling sum shall be calculated by adding the current month's emission totals with those for the previous 11 months. [Minn. R. 7007.0800, subps. 4-5]

5.4.17 Recordkeeping: Maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of the facility including malfunction of the air pollution control equipment or any periods during which a continuous monitoring system or monitoring device is inoperative. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000, Title I Condition: 40 CFR 52.21(k)(modeling) &

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Minn. R. 7007.3000]

5.4.18 Recordkeeping: The Permittee must retain records of all CEMS monitoring data and support information for a period of five years from the date of the monitoring sample, measurement or report. Records shall be kept at the source. [Minn. R. 7017.1130]

5.4.19 Excess emissions and monitoring system performance reports shall include the information required in 40 CFR Section 60.7(c) and (d), Section 60.49a and Section 60.334(j). MPCA Forms DRF-1 and DRF-2 may be used to meet this requirement. [40 CFR 60.334(j), 40 CFR 60.49(a), 40 CFR 60.7, Minn. R. 7007.0800, subp. 2]

COMG 10 HAP Limits 5.5.1 The Permittee shall limit HAPs - Total <= 22.5 tons per year

12-month rolling sum basis to be calculated by the 15th day of the month for the previous calendar month as described later in this permit. [Minn. R. 7011.7000, Title I Condition: Avoid major source under 40 CFR 63.2]

5.5.2 The Permittee shall limit Formaldehyde <= 9.0 tons per year 12-month rolling sum basis to be calculated by the 15th day of the month for the previous calendar month as described later in this permit. [Minn. R. 7011.7000, Title I Condition: Avoid major source under 40 CFR 63.2]

5.5.3 EQUI1 Daily Recordkeeping: On each day of operation of EQUI1 the Permittee shall record and maintain a record of the number of hours spent at each of the following load ranges: 1. >90% load: 0.045 lb/hr 2. >70%-90% load: 0.038 lb/hr 3. 50%-70% load: 0.223 lb/hr 4. <50% load: 15.1 lb/hr. [Minn. R. 7007.0800, subps. 4-5, Minn. R. 7011.7000, Title I Condition: Avoid major source under 40 CFR 63.2]

5.5.4 EQUI92 Daily Recordkeeping: On each day of operation the Permittee shall record and maintain a record of the hours of operation EQUI92. [Minn. R. 7007.0800, subps. 4-5, Minn. R. 7011.7000, Title I Condition: Avoid major source under 40 CFR 63.2]

5.5.5 Monthly Recordkeeping: By the 15th of the month, the Permittee shall calculate and record the following: 1) The HAPs - Total emissions from EQUI1, EQUI62, and EQUI92 for the previous calendar month. 2) The Formaldehyde emissions from EQUI1, EQUI62, and EQUI92 for the previous calendar month.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation To calculate the emissions from EQUI1/EQUI62, the Permittee shall use emission factors for formaldehyde established by the most recent MPCA-approved stack test for the EQUI1/EQUI62 formaldehyde emissions at the associate load ranges. The most recent approved emission factors are listed below. For EQUI92 emission calculations, the Permittee shall use AP-42 emissions factors. [Minn. R. 7007.0800, subps. 4-5, Minn. R. 7011.7000, Title I Condition: Avoid major source under 40 CFR 63.2]

5.5.6 Formaldehyde: EQUI1/EQUI62 Formaldehyde Emission Factor/Rate Testing: Emission factors and rates shall be determined by using Agency approved stack test methods at the following loads and operating conditions with the SCR system online: 1. EQUI1 operating at less than 50 percent of full load. 2. EQUI1 operating at 50 to 70 percent of full load. 3. EQUI1 operating at 70 to 90 percent of full load. 4. EQUI1 and EQUI62 combined operating at 90 to 100 percent of full load. Until the formaldehyde emission factors for EQUI1 based on the tests completed July 2, 2002 (100%, 70%, and 50% loads) and November 11, 2002, (40% load) are replaced by further MPCA-approved performance testing, the Permittee shall use the following values to calculate formaldehyde emissions at the associated load ranges: >90% load: 0.045 lb/hr >70%-90% load: 0.038 lb/hr 50%-70% load: 0.223 lb/hr <50% load: 15.1 lb/hr. [Minn. R. 7017.2020, subp. 1]

5.5.7 Formaldehyde: EQUI1/EQUI62 Testing Frequency to Update Formaldehyde Emission Factors: Within 60 days of calculating 12-month rolling sum formaldehyde emissions of greater than 8.9 tons, the Permittee shall perform a stack test to redevelop emission factors for formaldehyde emissions from EQUI1/EQUI62 over the previously tested load ranges. [Minn. R. 7017.2020, subp. 1]

COMG 11 Unit 6 CEMS

Required by Acid Rain and NSPS Regulations

5.6.1 The CEMS requirements listed below outline the typical standards of 40 CFR pt. 60, 40 CFR pt. 75, and Minnesota Rules. Additional monitoring requirements may also apply to

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation the Facility based on this combination of standards and it is the responsibility of the Facility to meet all applicable requirements. [Minn. R. 7007.0800, subp. 4(A)]

5.6.2 Nitrogen Oxides: Emissions Monitoring: The Permittee shall use CEMS to measure NOx emissions from EQUI92. [40 CFR 75.10(a), 40 CFR pt. 60, subp. KKKK, Minn. R. 7017.1010, subp 1]

5.6.3 40 CFR pt. 75 Emissions Monitoring Requirement: The Permittee shall use a Continuous Emissions Monitoring System (CEMS) to measure NOx emissions, and measure or calculate SO2 and CO2 in accordance with 40 CFR pt. 75 for emissions from STRU35. The Permittee shall measure NOx emissions in ppmvd corrected to 15% oxygen and automatically calculate and record the 1-hour average NOx emission rates. NOx ppmvd emission data shall also be converted to lb/mmBtu as required by pt. 75. [40 CFR 75.10, Minn. R. 7007.0800, subp. 4]

5.6.4 40 CFR pt. 60 Emissions Monitoring Requirement: The Permittee shall install, calibrate, maintain, and operate a continuous monitoring system (CEMS) consisting of a NOx monitor and a diluent gas (oxygen) monitor to determine the hourly NOx emission rate in parts per million (ppm) or pounds per million British thermal units (lb/MMBtu). [40 CFR 60.4335(b)(1), 40 CFR 60.4340(b), Minn. R. 7017.1006]

5.6.5 40 CFR pt. 60 CEMS Installation: The Permittee shall install and certify each NOx diluent CEMS according to Performance Specification 2 (PS 2) in 40 CFR pt. 60, Appendix B, except the 7-day calibration drift is based on unit operating days, not calendar days. With state approval, Procedure 1 in 40 CFR pt. 60, Appendix F is not required. Alternatively, a NOx diluent CEMS that is installed and certified according to 40 CFR pt. 75, Appendix A is acceptable for use under 40 CFR pt. 60, subp. KKKK. The relative accuracy test audit (RATA) of the CEMS shall be performed on a lb/MMBtu basis. All continuous monitoring systems shall be installed such that representative measurements of emissions are obtained. Additional procedures for location of continuous monitoring systems contained in the applicable Performance Specifications of 40 CFR pt. 60, Appendix B shall be used. [40 CFR 60.13(a), 40 CFR 60.13(f), 40 CFR 60.4345(a), Minn. R. 7017.1010, subp. 1(A)]

5.6.6 40 CFR pt. 60 CEMS Operation: CEMS must be operated and data recorded during all periods of emission unit operation including periods of emission unit start-up, shutdown, or malfunction except for periods of acceptable monitor downtime. This requirement applies whether or not a numerical emission limit applies during these periods. A CEMS must not be bypassed except in emergencies where

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation failure to bypass would endanger human health, safety, or plant equipment. [40 CFR 60.13(a), 40 CFR 60.13(e), Minn. R. 7017.1010, subp. 1(A), Minn. R. 7017.1090]

5.6.7 40 CFR pt. 75 Monitoring Data: Hourly averages shall be computed using at least one data point in each fifteen minute quadrant of an hour, where the unit combusted fuel during that quadrant of an hour. Notwithstanding this requirement, an hourly average may be computed from at least two data points separated by a minimum of 15 minutes (where the unit operates for more than one quadrant of an hour) if data is unavailable as a result of the performance of calibration, quality assurance, or preventive maintenance activities pursuant to 40 CFR Section 75.21 and appendix B of pt. 75, or backups of data from the data acquisition and handling system, or recertification, pursuant to Section 75.20. The owner or operator shall use all valid measurements or data points collected during an hour to calculate the hourly averages. All data points collected during an hour shall be, to the extent practicable, evenly spaced over the hour. [40 CFR 75.10(d)(1)]

5.6.8 40 CFR pt. 60 Valid Unit Operating Hour: As specified in 40 CFR Section 60.13(e)(2), during each full unit operating hour, both the NOx monitor and the diluent monitor must complete a minimum of one cycle of operation (sampling, analyzing, and data recording) for each 15-minute quadrant of the hour, to validate the hour. For partial unit operating hours, at least one valid data point must be obtained with each monitor for each quadrant of the hour in which the unit operates. For unit operating hours in which required quality assurance and maintenance activities are performed on the CEMS, a minimum of two valid data points (one in each of two quadrants) are required for each monitor to validate the NOx emission rate for the hour. If the unit operates in only one quadrant of the hour, at least one valid data point is required to calculate the NOx emission rate for the hour. [40 CFR 60.13(a), 40 CFR 60.13(e)(2), 40 CFR 60.13(h)(2)(iii), 40 CFR 60.4345(a), Minn. R. 7017.1010, subp. 1(A)]

5.6.9 40 CFR pt. 60 Hourly average calculation: For a full operating hour (any clock hour with 60 minutes of unit operation), at least four valid data points are required to calculate the hourly average, i.e., one data point in each of the 15-minute quadrants of the hour, except as provided for any operating hour in which required maintenance or quality-assurance activities are performed. For a partial operating hour (any clock hour with less than 60 minutes of unit operation), at least one valid data point in each 15-minute quadrant of the hour in which the unit operates is required to calculate the hourly average, except

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation as provided for any operating hour in which required maintenance or quality-assurance activities are performed. If a daily calibration error check is failed during any operating hour, all data for that hour shall be invalidated, unless a subsequent calibration error test is passed in the same hour and the requirements of 40 CFR Section 60.13(h)(2)(iii) are met, based solely on valid data recorded after the successful calibration. Data recorded during periods of continuous monitoring system breakdown, repair, calibration checks, and zero and span adjustments shall not be included in the data averages computed under this paragraph, unless the Permittee is complying with the requirements of 40 CFR Section 60.7(f)(1) or (2), in which case the Permittee must include any data recorded during periods of monitor breakdown or malfunction in the data averages. For each full or partial operating hour, all valid data points shall be used to calculate the hourly average. Either arithmetic or integrated averaging of all data may be used to calculate the hourly averages. The data may be recorded in reduced or nonreduced form (e.g., ppm pollutant and percent O2 or ng/J of pollutant). [40 CFR 60.13(h)(2), 40 CFR 60.13(h)(2)(iv)-(ix), Minn. R. 7017.1010, subp. 1(A)]

5.6.10 Identification of Excess Emissions Under 40 CFR pt. 60, subp. KKKK: a) The Permittee shall reduce all CEMS data to hourly averages as specified in 40 CFR Section 60.13(h). The Permittee shall convert all excess emissions into units of the standard using the applicable conversion procedures specified in 40 CFR pt. 60, subp. KKKK. After conversion into units of the standard, the data may be rounded to two significant digits. b) The Permittee shall calculate and record the hourly NOx emission rate in units of ppm or lb/MMBtu (using the appropriate equation from method 19 in 40 CFR pt. 60, Appendix A) for each unit operating hour in which a valid hourly average is obtained for both NOx and diluent monitors. A valid hourly average is as described in 40 CFR Section 60.4345(b). For any hour in which the hourly average O2 concentration exceeds 19.0 percent O2, a diluent cap value of 19.0 percent O2 may be used in the emission calculations. c) The Permittee shall not correct measured NOx concentrations to 15 percent O2 when calculating emissions in lb/MMBtu.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation d) For periods where the missing data substitution procedures of 40 CFR pt. 75, subpart D are applied, the Permittee shall report those periods as monitor downtime in the excess emissions and monitoring performance report required under 40 CFR Section 60.7(c). e) The Permittee shall reduce any required fuel flow rate, steam flow rate, temperature, pressure, or megawatt data to hourly averages. f) The Permittee shall calculate the hourly average NOx emission rates, in ppm for units complying with the concentration limit, or in lb/MWh, using the equation at 40 CFR Section 60.4350(f)(1), for units complying with the output based standard. g) The Permittee shall use the calculated hourly average emissions rate described in 40 CFR Section 60.4350(f) to assess excess emissions on a 4-hour rolling average basis, as described in 40 CFR Section 60.4380(b)(1). [40 CFR 60.13(a), 40 CFR 60.13(h)(3), 40 CFR 60.4350(a)-(g), Minn. R. 7017.1010, subp. 1(A), Minn. R. 7017.1160, subps. 1-2]

5.6.11 40 CFR pt. 60 QA Plan: The Permittee shall develop and keep on-site a quality assurance (QA) plan for all of the continuous monitoring equipment described in 40 CFR Section 60.4345(a), (c), and (d). For the CEMS and fuel flow meters, the Permittee may, with state approval, satisfy the requirements of this paragraph by implementing the QA program and plan described in 40 CFR pt. 75, Appendix B, Section 1. [40 CFR 60.4345(e), Minn. R. 7017.1170, subp. 3]

5.6.12 40 CFR pt. 60 QA Plan: Develop and implement a written quality assurance plan that covers each CEMS. The plan shall be on site and available for inspection within 30 days after monitor certification. The plan shall contain all of the information required by 40 CFR Part 60, Appendix F, Section 3. The plan shall include the manufacturer's spare parts list for each CEMS and require that those parts be kept at the facility, or readily available from another of the Permittee's facilities, unless the Commissioner gives written approval to exclude specific spare parts from the list. [40 CFR pt. 60, Appendix F(3), Minn. R. 7017.1010, subp. 1(C), Minn. R. 7017.1170, subp. 2]

5.6.13 40 CFR pt. 60 CEMS QA/QC: The Permittee is subject to the performance specifications listed in 40 CFR pt. 60, Appendix B and shall operate, calibrate, and maintain each CEMS according to the QA/QC procedures in 40 CFR pt. 60, Appendix F as amended and maintain a written QA/QC program available in a form suitable for inspection. [40 CFR 60.13(a), 40 CFR pt. 60, Appendix F, Minn. R. 7017.1010, subp. 1]

5.6.14 40 CFR pt. 75 CEMS QA/QC: The Permittee shall operate, calibrate, and maintain each CEMS according to the QA/QC

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation procedures in 40 CFR pt. 75, Appendix B as amended. [40 CFR 75.21(a)]

5.6.15 40 CFR pt. 75 Certification Application: The Permittee shall apply for certification of each continuous emission monitoring system used under the Acid Rain Program. The Permittee shall submit the certification application in accordance with 40 CFR Section 75.60 and each complete certification application shall include the information specified in Section 75.63. [40 CFR 75.20(a)(2), 40 CFR 75.60(b)(1), 40 CFR 75.63]

5.6.16 40 CFR pt. 60 CEMS Certification: Certification Test Plan due 30 days before Certification Test. Certification Test Pretest Meeting due 7 days before Certification Test. Certification Test Report - Microfiche Copy due 105 days after Certification Test. Certification Test Report due 45 days after Certification Test. The Notification, Test Plan, and Test Report may be submitted in alternate format as allowed by Minn. R. 7017.1120, subp. 2. [40 CFR 60.7(a)(5), Minn. R. 7017.1060, subp. 1-3, Minn. R. 7017.1080, subp. 1-4, Minn. R. 7019.0100, subp. 1]

5.6.17 40 CFR pt. 60 CEMS Daily Calibration Drift Test: Check the zero (low level value between 0 and 20 percent of span value) and span (50 to 100 percent of span value) calibration drifts at least once daily. The zero and span must, at a minimum, be adjusted whenever the drift exceeds two times the limit specified in 40 CFR pt. 60, Appendix B. 40 CFR pt. 60, Appendix F, Section 4.3.1 shall be used to determine out-of-control periods for CEMS. [40 CFR 60.13(d)(1), 40 CFR pt. 60, Appendix F(4.1), Minn. R. 7017.1010, subp. 1, Minn. R. 7017.1170, subp. 3]

5.6.18 40 CFR pt. 60 Performance Evaluation: The Permittee shall conduct a performance evaluation of the continuous emission monitoring system (CEMS) during any performance test required under 40 CFR Section 60.8 or within 30 days thereafter in accordance with the applicable performance specification in 40 CFR pt. 60, Appendix B. The owner or operator of an affected facility shall conduct CEMS performance evaluations at such other times as may be required by the Administrator under section 114 of the Act. [40 CFR 60.13(c), Minn. R. 7017.1010, subp. 1(A)]

5.6.19 40 CFR pt. 60 CEMS Certification/Recertification Test: due 90 days after the first excess emissions report required for the CEMS or any change which invalidates the monitor's certification status as outlined in Minn. R. 7017.1050, subp. 2. [40 CFR 60.13(b), Minn. R. 7017.1010, subp. 1(A)]

5.6.20 Relative Accuracy Test Audit (RATA) Results Summary: due 30 days after end of each calendar quarter in which a RATA was

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation conducted. [Minn. R. 7017.1180, subp. 3]

5.6.21 Linearity Test Results Summary: due 30 days after end of each calendar quarter in which a Linearity Test was conducted. [Minn. R. 7017.1180, subp. 4]

5.6.22 Cylinder Gas Audit (CGA) Results Summary: due 30 days after end of each calendar quarter in which a CGA was conducted. [Minn. R. 7017.1180, subp. 1]

5.6.23 40 CFR pt. 60 Recordkeeping: The Permittee shall retain records of all CEMS monitoring data and support information for a period of five years from the date of the monitoring sample, measurement or report. Records shall be kept at the source. [40 CFR 60.7(f), Minn. R. 7017.1130, Minn. R. 7019.0100, subp. 1]

5.6.24 40 CFR pt. 75 Recordkeeping: The Permittee shall maintain a file of all measurements, data, reports, and other information required by 40 CFR pt. 75 at the source in a form suitable for inspection for at least three (3) years from the date of each record. The file shall contain all information required by 40 CFR Section 75.57. [40 CFR 75.57]

5.6.25 40 CFR pt. 60 Excess Emissions and Monitor Downtime Report: The Permittee shall submit reports of excess emissions and monitor downtime for in accordance with 40 CFR Section 60.7(c). Excess emissions must be reported for all periods of unit operation, including start-up, shutdown, and malfunction. [40 CFR 60.4375]

5.6.26 40 CFR pt. 60 Excess Emission and Monitor Downtime Report: For the purpose of reports required under 40 CFR Section 60.7(c), periods of excess emissions and monitor downtime that must be reported are defined as follows: (1) An excess emissions is any unit operating period in which the 4-hour rolling average NOx emission rate exceeds the applicable emission limit in 40 CFR Section 60.4320. A 4-hour rolling average NOx emission rate under 40 CFR pt. 60, subp. KKKK is the arithmetic average of the average NOx emission rate in ppm or ng/J (lb/MWh) measured by the continuous emission monitoring equipment for a given hour and the three unit operating hour average NOx emission rates immediately preceding that unit operating hour. The Permittee shall calculate the rolling average if a valid NOx emission rate is obtained for at least 3 of the 4 hours. (2) A period of monitor downtime is any unit operating hour in which the data for any of the following parameters are either missing or invalid: NOx concentration, O2 concentration, fuel flow rate, or megawatts. The steam flow rate, steam temperature, and steam pressure are only required if you will use this information for compliance purposes. (3) For operating periods during which multiple emissions standards apply, the applicable standard is the average of the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation applicable standards during each hour. For hours with multiple emissions standards, the applicable limit for that hour is determined based on the condition that corresponded to the highest emissions standard. [40 CFR 60.4380, 40 CFR 60.4380(b)]

5.6.27 40 CFR pt. 75 Quarterly Reports: Electronically report the data and information in 40 CFR Section 75.64 (a), (b), and (c) to the Administrator quarterly. [40 CFR 75.64]

EQUI 1 EU026 Unit 5/2

Combustion Turbine (Dry Low NOx Combustors & Selective Catalytic Reduction)

5.7.1 This source is subject to the U.S. EPA Acid Rain Program codified at 40 CFR pts. 72, 73, and 75. Combustion turbine EQUI1 is a utility unit that also is a gas-fired unit and a new unit, as defined in 40 CFR Section 72.2. The Permittee's application for an acid rain permit for the combustion turbines is attached in Appendix D to this permit. [40 CFR pt. 72, 40 CFR pt. 73, 40 CFR pt. 75]

5.7.2 The Permittee shall comply with the applicable Acid Rain emissions limitation for sulfur dioxide. [40 CFR 72.9(c)(1)(ii), 40 CFR 72.9(g)(4)]

5.7.3 The Permittee shall hold allowances as of the allowance transfer deadline, in the unit's compliance subaccount, not less than the total annual emissions of sulfur dioxide for the previous calendar year. Allowances shall be held in, deducted from, or transferred among Allowance Tracking System accounts in accordance with the Acid Rain Program. [40 CFR 72.9(c)(1)(i), 40 CFR 72.9(g)(4)]

5.7.4 If EQUI1 has excess emissions, the designated representative shall submit a proposed offset plan in accordance with 40 CFR Section 72.9(e). [40 CFR 72.9(e)]

5.7.5 The Permittee shall certify Acid Rain Program submittals. Each submission under the Acid Rain Program shall be submitted, signed, and certified by the designated representative or the alternative designated representative for all sources on behalf of which the submission is made in accordance with 40 CFR Section 72.21. [40 CFR 72.21, 40 CFR 72.22]

5.7.6 The Permittee shall keep on site or readily accessible at another site each of the following documents for a period of 5 years from the date the document is created: - The certificate of representation;

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation - All emission monitoring information; - Copies of all reports, compliance certifications, and other submissions or records made under the Acid Rain Program; and - Copies of all documents used to complete an acid rain permit application. [40 CFR 72.9(f)(1)]

5.7.7 The Permittee shall apply for Acid Rain Program Permit reissuance: The designated representative shall submit a complete Acid Rain permit application for each source with an affected unit at least 6 months prior to the expiration of an existing Acid Rain Permit in accordance with 40 CFR Section 72.30(c). [40 CFR 72.30(c)]

5.7.8 Nitrogen Oxides <= 110 parts per million using a 4-hour rolling average by volume at 15% O2 on a dry basis and assuming a fuel-bound content of zero. Applies at all times except during startup, shutdown, or malfunction. Startup for purposes of this limit shall not exceed 1 hour. Shutdown for purposes of this limit shall not exceed 30 minutes. [40 CFR 60.332(a)(1), 40 CFR 60.334(j)(1)(iii)(A), Minn. R. 7011.2350]

5.7.9 Sulfur Dioxide <= 0.15 percent by volume at 15 percent oxygen and on a dry basis. [40 CFR 60.333(a), Minn. R. 7011.2350]

5.7.10 Startup and Shutdown Hours <= 1250 hours per year 12-month rolling sum basis. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.7.11 EQUI1 Startup and Shutdown: In addition to the definition in 40 CFR Section 60.2, startup is defined as all EQUI1 operation at less than 70% capacity (for the specific combustion turbine compressor inlet conditions during operation) prior to initially attaining 70% load. EQUI1 startup ends no later than 15 minutes after EQUI1 first attains 70% load after startup commences. In addition to the definition in 40 CFR Section 60.2, shutdown is defined as all EQUI1 operation at less than 70% load that is part of the process that terminates EQUI1 fuel combustion until the next EQUI1 startup. Shutdown does not include temporary operating loads below 70% for up to 15 consecutive minutes, due to external factors such as changes in compressor inlet conditions. The CEMS data acquisition and handling system monitors EQUI1 load (using a signal provided by the combustion turbine generator control system) and indicates whether EQUI1 is operating in normal mode or startup/shutdown mode. The percent load signal is also used by the CEMS to determine whether emissions data is categorized as normal emissions data or startup/shutdown emissions data. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.7.12 Sulfur Content of Fuel <= 0.004 grains per dry standard cubic

foot 12-month rolling average. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.7.13 Sulfur Content of Fuel <= 0.8 percent by weight. [40 CFR 60.333(b), Minn. R. 7011.2350]

5.7.14 Fuel usage is limited to pipeline quality natural gas. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.7.15 The Permittee need not monitor the total sulfur content of the gaseous fuel combusted in the turbine, if the gaseous fuel is demonstrated to meet the definition of natural gas in 40 CFR Section 60.331(u). The Permittee shall use one of the following sources of information to make the required demonstration: (i) The gas quality characteristics in a current, valid purchase contract, tariff sheet or transportation contract for the gaseous fuel, specifying that the maximum total sulfur content of the fuel is 20.0 grains/100 scf or less; or (ii) Representative fuel sampling data which show that the sulfur content of the gaseous fuel does not exceed 20 grains/100 scf. At a minimum, the amount of fuel sampling data specified in section 2.3.1.4 or 2.3.2.4 of appendix D to 40 CFR part 75 is required. [40 CFR 60.334(h)(3), Minn. R. 7011.2350]

5.7.16 Maintain records of the demonstration that the gaseous fuel used meets the definition of natural gas in 40 CFR Section 60.31(u). [Minn. R. 7007.0800, subp. 5]

5.7.17 Daily Startup and Shutdown Operating Hours Monitoring and Recordkeeping: Once each day the Permittee shall calculate and record EQUI1 startup and shutdown operating hours for the previous calendar day. Startup and shutdown operating hours shall be determined using the electronic data produced by instrumentation that instantaneously measures EQUI1 gross electric power output. [Minn. R. 7007.0800, subps. 4-5, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.7.18 Monthly Startup and Shutdown Operating Hours Monitoring and Recordkeeping: By the 15th day of each month, the Permittee shall calculate and record the total EQUI1 startup and shutdown operating hours for the previous month and for the previous 12-month period. [Minn. R. 7007.0800, subps. 4-5]

5.7.19 Transport Rule (TR) NOx Annual Trading Program Requirements The Permittee shall comply with the TR NOx

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Annual Trading Program requirements contained in permit Appendix C. [40 CFR 97.430-435]

5.7.20 Designated representative requirements: The Permittee shall comply with the requirement to have a designated representative, and may have an alternate designated representative, in accordance with 40 CFR Section 97.413 through 97.418. [40 CFR 97.406(a)]

5.7.21 1.) The Permittee and the designated representative, of each TR NOx Annual source and each TR NOx Annual unit at the source shall comply with the monitoring, reporting, and recordkeeping requirements of 40 CFR Section 97.430 (general requirements, including installation, certification, and data accounting, compliance deadlines, reporting data, prohibitions, and long-term cold storage), 40 CFR Section 97.431 (initial monitoring system certification and recertification procedures), 40 CFR Section 97.432 (monitoring system out-of-control periods), 40 CFR Section 97.433 (notifications concerning monitoring), 40 CFR Section 97.434 (recordkeeping and reporting, including monitoring plans, certification applications, quarterly reports, and compliance certification), and 40 CFR Section 97.435 (petitions for alternatives to monitoring, recordkeeping, or reporting requirements). 2.) The emissions data determined in accordance with 40 CFR Section 97.430 through 97.435 shall be used to calculate allocations of TR NOx Annual allowances under 40 CFR Section 97.411(a)(2) and (b) and 40 CFR Section 97.412 and to determine compliance with the TR NOx Annual emissions limitation and assurance provisions under paragraph 40 CFR Section 97.406(c) below, provided that, for each monitoring location from which mass emissions are reported, the mass emissions amount used in calculating such allocations and determining such compliance shall be the mass emissions amount for the monitoring location determined in accordance with 40 CFR Section 97.430 through 97.435 and rounded to the nearest ton, with any fraction of a ton less than 0.50 being deemed to be zero. [40 CFR 97.406(b)]

5.7.22 TR NOx Annual emissions limitation. i.) As of the allowance transfer deadline for a control period in a given year, the Permittee shall hold, in the source's compliance account, TR NOx Annual allowances available for deduction for such control period under 40 CFR Section 97.424(a) in an amount not less than the tons of total NOx emissions for such control period from all TR NOx Annual units at the source. ii.) If total NOx emissions during a control period in a given year from the TR NOx Annual units at a TR NOx Annual source are in excess of the TR NOx Annual emissions limitation set forth in 40 CFR Section 97.406(c)(1)(i) above, then: A. The

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Permittee shall hold the TR NOx Annual allowances required for deduction under 40 CFR Section 97.424(d); and B. The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed, for the same violations, under the Clean Air Act, and each ton of such excess emissions and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart AAAAA and the Clean Air Act. [40 CFR 97.406(c)(1)]

5.7.23 TR NOx Annual assurance provisions: i.) If total NOx emissions during a control period in a given year from all TR NOx Annual units at TR NOx Annual sources in Minnesota (and Indian country within the borders of Minnesota) exceed the state assurance level, then the owners and operators of such sources and units in each group of one or more sources and units having a common designated representative for such control period, where the common designated representative's share of such NOx emissions during such control period exceeds the common designated representative's assurance level for the state and such control period, shall hold (in the assurance account established for the owners and operators of such group) TR NOx Annual allowances available for deduction for such control period under 40 CFR Section 97.425(a) in an amount equal to two times the product (rounded to the nearest whole number), as determined by the Administrator in accordance with 40 CFR Section 97.425(b), of multiplying- (A) The quotient of the amount by which the common designated representative's share of such NOx emissions exceeds the common designated representative's assurance level divided by the sum of the amounts, determined for all common designated representatives for such sources and units in the Minnesota and Indian country within the borders of Minnesota for such control period, by which each common designated representative's share of such NOx emissions exceeds the respective common designated representative's assurance level; and (B) The amount by which total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within the borders of Minnesota for such control period exceed the state assurance level. ii.) The Permittee shall hold the TR NOx Annual allowances required under 40 CFR Section 97.406(c)(2)(i) above, as of midnight of November 1 (if it is a business day), or midnight of the first business day thereafter (if November 1 is not a business day), immediately after such control period. iii.) Total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within in the borders of Minnesota during a control period in a given year exceed the state assurance level if such total NOx

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation emissions exceed the sum, for such control period, of the state NOx Annual trading budget under 40 CFR 97.410(a) and the state's variability limit under 40 CFR 97.410(b). iv.) It shall not be a violation of 40 CFR part 97, subpart AAAAA or of the Clean Air Act if total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within the borders of Minnesota during a control period exceed the state assurance level or if a common designated representative's share of total NOx emissions from the TR NOx Annual units at TR NOx Annual sources in the Minnesota and Indian country within the borders of Minnesota during a control period exceeds the common designated representative's assurance level. v.) To the extent the Permittee fails to hold TR NOx Annual allowances for a control period in a given year in accordance with 40 CFR Section 97.406(c)(2)(i) through (iii) above, A. The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed under the Clean Air Act; and B. Each TR NOx Annual allowance that the Permittee fails to hold for such control period in accordance with 40 CFR Section 97.406(c)(2)(i) through (iii) above and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart AAAAA and the Clean Air Act. [40 CFR 97.406(c)(2)(i)-(v)]

5.7.24 Compliance periods. i) A TR NOx Annual unit shall be subject to the requirements under 40 CFR 97.406(c)(1) above for the control period starting on the later of January 1, 2015, or the deadline for meeting the unit's monitor certification requirements under 40 CFR 97.430(b) and for each control period thereafter. ii) A TR NOx Annual unit shall be subject to the requirements under 40 CFR 97.406(c)(2) above for the control period starting on the later of January 1, 2017 or the deadline for meeting the unit's monitor certification requirements under 40 CFR 97.430(b) and for each control period thereafter. [40 CFR 97.406(c)(3)]

5.7.25 Vintage of allowances held for compliance. i). A TR NOx Annual allowance held for compliance with the requirements under 40 CFR 97.406(c)(1)(i) above for a control period in a given year must be a TR NOx Annual allowance that was allocated for such control period or a control period in a prior year. ii). A TR NOx Annual allowance held for compliance with the requirements under 40 CFR 97.406(c)(1)(ii)(A) and (2)(i) through (iii) above for a control period in a given year must be a TR NOx Annual allowance that was allocated for a control period in a prior year or the control period in the given year or in the immediately following year. [40 CFR 97.406(c)(4)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.7.26 Allowance Management System requirements. Each TR NOx

Annual allowance shall be held in, deducted from, or transferred into, out of, or between Allowance Management System accounts in accordance with 40 CFR part 97, subpart AAAAA. [40 CFR 97.406(c)(5)]

5.7.27 Limited authorization. A TR NOx Annual allowance is a limited authorization to emit one ton of NOx during the control period in one year. Such authorization is limited in its use and duration as follows: i) Such authorization shall only be used in accordance with the TR NOx Annual Trading Program; and ii) Notwithstanding any other provision of 40 CFR part 97, the Administrator has the authority to terminate or limit the use and duration of such authorization to the extent the Administrator determines is necessary or appropriate to implement any provision of the Clean Air Act. [40 CFR 97.406(c)(6)]

5.7.28 Property right. A TR NOx Annual allowance does not constitute a property right. [40 CFR 97.406(c)(7)]

5.7.29 Additional recordkeeping and reporting requirements. 1.) Unless otherwise provided, the Permittee shall keep on site at the source each of the following documents (in hardcopy or electronic format) for a period of 5 years from the date the document is created. This period may be extended for cause, at any time before the end of 5 years, in writing by the Administrator. i.) The certificate of representation under 40 CFR Section 97.416 for the designated representative for the source and each TR NOx Annual unit at the source and all documents that demonstrate the truth of the statements in the certificate of representation; provided that the certificate and documents shall be retained on site at the source beyond such 5-year period until such certificate of representation and documents are superseded because of the submission of a new certificate of representation under 40 CFR 97.416 changing the designated representative. ii.) All emissions monitoring information, in accordance with 40 CFR part 97, subpart AAAAA. iii) Copies of all reports, compliance certifications, and other submissions and all records made or required under, or to demonstrate compliance with the requirements of, the TR NOx Annual Trading Program. 2.) The designated representative of a TR NOx Annual source and each TR NOx Annual unit at the source shall make all submissions required under the TR NOx Annual Trading Program, except as provided in 40 CFR Section 97.418. This requirement does not change, create an exemption from, or otherwise affect the responsible official submission requirements under a title V operating permit program in 40 CFR parts 70 and 71. [40 CFR 97.406(e)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.7.30 Liability.

1.) Any provision of the TR NOx Annual Trading Program that applies to a TR NOx Annual source or the designated representative of a TR NOx Annual source shall also apply to the Permittee. 2.) Any provision of the TR NOx Annual Trading Program that applies to a TR NOx Annual unit or the designated representative of a TR NOx Annual unit shall also apply to the Permittee. [40 CFR 97.406(f)]

5.7.31 Effect on other authorities. No provision of the TR NOx Annual Trading Program or exemption under 40 CFR Section 97.405 shall be construed as exempting or excluding the Permittee, and the designated representative, of a TR NOx Annual source or TR NOx Annual unit from compliance with any other provision of the applicable, approved state implementation plan, a federally enforceable permit, or the Clean Air Act. [40 CFR 97.405]

5.7.32 TR SO2 Group 2 Trading Program Requirements The Permittee shall comply with the TR SO2 Group 2 Trading Program Requirements contained in permit Appendix C. [40 CFR 97.730-735]

5.7.33 Designated representative requirements. The Permittee shall comply with the requirement to have a designated representative, and may have an alternate designated representative, in accordance with 40 CFR Section 97.713 through 97.718. [40 CFR 97.706(a)]

5.7.34 Emissions monitoring, reporting, and recordkeeping requirements. 1.) The Permittee, and the designated representative, of each TR SO2 Group 2 source and each TR SO2 Group 2 unit at the source shall comply with the monitoring, reporting, and recordkeeping requirements of 40 CFR Section 97.730 (general requirements, including installation, certification, and data accounting, compliance deadlines, reporting data, prohibitions, and long-term cold storage), 40 CFR Section 97.731 (initial monitoring system certification and recertification procedures), 40 CFR Section 97.732 (monitoring system out-of-control periods), 40 CFR Section 97.733 (notifications concerning monitoring), 40 CFR Section 97.734 (recordkeeping and reporting, including monitoring plans, certification applications, quarterly reports, and compliance certification), and 40 CFR Section 97.735 (petitions for alternatives to monitoring, recordkeeping, or reporting requirements). 2.) The emissions data determined in accordance with 40 CFR Section 97.730 through 97.735 shall be used to calculate allocations of TR SO2 Group 2 allowances under 40 CFR 97.711(a)(2) and (b) and 40 CFR Section 97.712 and to determine compliance with the TR SO2 Group 2 emissions

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation limitation and assurance provisions under 40 CFR Section 97.706(c) below, provided that, for each monitoring location from which mass emissions are reported, the mass emissions amount used in calculating such allocations and determining such compliance shall be the mass emissions amount for the monitoring location determined in accordance with 40 CFR Section 97.730 through 97.735 and rounded to the nearest ton, with any fraction of a ton less than 0.50 being deemed to be zero. [40 CFR 97.706(b)]

5.7.35 TR SO2 Group 2 emissions limitation. i.) As of the allowance transfer deadline for a control period in a given year, the Permittee shall hold, in the source's compliance account, TR SO2 Group 2 allowances available for deduction for such control period under 40 CFR Section 97.724(a) in an amount not less than the tons of total SO2 emissions for such control period from all TR SO2 Group 2 units at the source. ii.) If total SO2 emissions during a control period in a given year from the TR SO2 Group 2 units at a TR SO2 Group 2 source are in excess of the TR SO2 Group 2 emissions limitation set forth in paragraph 40 CFR Section 97.706(c)(1)(i) above, then: A.) The Permittee shall hold the TR SO2 Group 2 allowances required for deduction under 40 CFR Section 97.724(d); and B.) The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed, for the same violations, under the Clean Air Act, and each ton of such excess emissions and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart DDDDD and the Clean Air Act. [40 CFR pt. 97, 706(c)(1)]

5.7.36 TR SO2 Group 2 assurance provisions. ​i) If total SO2 emissions during a control period in a given year from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota exceed the state assurance level, then the owners and operators of such sources and units in each group of one or more sources and units having a common designated representative for such control period, where the common designated representative's share of such SO2 emissions during such control period exceeds the common designated representative's assurance level for the state and such control period, shall hold (in the assurance account established for the owners and operators of such group) TR SO2 Group 2 allowances available for deduction for such control period under 40 CFR Section 97.725(a) in an amount equal to two times the product (rounded to the nearest whole number), as determined by the Administrator in accordance with 40 CFR Section 97.725(b), of multiplying- A.) The quotient of the amount by which the common

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation designated representative's share of such SO2 emissions exceeds the common designated representative's assurance level divided by the sum of the amounts, determined for all common designated representatives for such sources and units in Minnesota and Indian country within the borders of Minnesota for such control period, by which each common designated representative's share of such SO2 emissions exceeds the respective common designated representative's assurance level; and B.) The amount by which total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota for such control period exceed the state assurance level. ii) The Permittee shall hold the TR SO2 Group 2 allowances required under 40 CFR Section 97.706(c)(2)(i) above, as of midnight of November 1 (if it is a business day), or midnight of the first business day thereafter (if November 1 is not a business day), immediately after such control period. iii.) Total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota during a control period in a given year exceed the state assurance level if such total SO2 emissions exceed the sum, for such control period, of the state SO2 Group 2 trading budget under 40 CFR Section 97.710(a) and the state's variability limit under 40 CFR Section 97.710(b). iv.) It shall not be a violation of 40 CFR part 97, subpart DDDDD or of the Clean Air Act if total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota during a control period exceed the state assurance level or if a common designated representative's share of total SO2 emissions from the TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota during a control period exceeds the common designated representative's assurance level. v.) To the extent the Permittee fails to hold TR SO2 Group 2 allowances for a control period in a given year in accordance with 40 CFR Section 97.706(c)(2)(i) through (iii) above, A.) The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed under the Clean Air Act; and B.) Each TR SO2 Group 2 allowance that the Permittee fails to hold for such control period in accordance with 40 CFR Section 97.706(c)(2)(i) through (iii) above and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart DDDDD and the Clean Air Act. [40 CFR 97.706(c)(2)(i)-(v)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.7.37 i.) A TR SO2 Group 2 unit shall be subject to the requirements

under 40 CFR Section 97.706(c)(1) above for the control period starting on the later of January 1, 2015 or the deadline for meeting the unit's monitor certification requirements under 40 CFR Section 97.730(b) and for each control period thereafter. ii.) A TR SO2 Group 2 unit shall be subject to the requirements under 40 Section CFR 97.706(c)(2) above for the control period starting on the later of January 1, 2017 or the deadline for meeting the unit's monitor certification requirements under 40 CFR Section 97.730(b) and for each control period thereafter. [40 CFR 97.706(c)(3)]

5.7.38 Vintage of allowances held for compliance. i.) A TR SO2 Group 2 allowance held for compliance with the requirements under 40 CFR 97.706(c)(1)(i) above for a control period in a given year must be a TR SO2 Group 2 allowance that was allocated for such control period or a control period in a prior year. ii.) A TR SO2 Group 2 allowance held for compliance with the requirements under 40 CFR 97.706(c)(1)(ii)(A) and (2)(i) through (iii) above for a control period in a given year must be a TR SO2 Group 2 allowance that was allocated for a control period in a prior year or the control period in the given year or in the immediately following year. [40 CFR 97.706(c)(4)]

5.7.39 Allowance Management System requirements. Each TR SO2 Group 2 allowance shall be held in, deducted from, or transferred into, out of, or between Allowance Management System accounts in accordance with 40 CFR part 97, subpart DDDDD. [40 CFR 97.706(c)(5)]

5.7.40 Limited authorization. A TR SO2 Group 2 allowance is a limited authorization to emit one ton of SO2 during the control period in one year. Such authorization is limited in its use and duration as follows: i.) Such authorization shall only be used in accordance with the TR SO2 Group 2 Trading Program; and ii) Notwithstanding any other provision of 40 CFR part 97, subpart DDDDD, the Administrator has the authority to terminate or limit the use and duration of such authorization to the extent the Administrator determines is necessary or appropriate to implement any provision of the Clean Air Act. [40 CFR 97.706(c)(6)]

5.7.41 Property right. A TR SO2 Group 2 allowance does not constitute a property right. [40 CFR pt. 97, 706(c)(7)]

5.7.42 Additional recordkeeping and reporting requirements. 1.) Unless otherwise provided, the Permittee shall keep on site at the source each of the following documents (in hardcopy or electronic format) for a period of 5 years from the date the document is created. This period may be

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation extended for cause, at any time before the end of 5 years, in writing by the Administrator. i.) The certificate of representation under 40 CFR Section 97.716 for the designated representative for the source and each TR SO2 Group 2 unit at the source and all documents that demonstrate the truth of the statements in the certificate of representation; provided that the certificate and documents shall be retained on site at the source beyond such 5-year period until such certificate of representation and documents are superseded because of the submission of a new certificate of representation under 40 CFR Section 97.716 changing the designated representative. ii.) All emissions monitoring information, in accordance with 40 CFR part 97, subpart DDDDD. iii.) Copies of all reports, compliance certifications, and other submissions and all records made or required under, or to demonstrate compliance with the requirements of, the TR SO2 Group 2 Trading Program. 2.) The designated representative of a TR SO2 Group 2 source and each TR SO2 Group 2 unit at the source shall make all submissions required under the TR SO2 Group 2 Trading Program, except as provided in 40 CFR Section 97.718. This requirement does not change, create an exemption from, or otherwise affect the responsible official submission requirements under a title V operating permit program in parts 70 and 71. [40 CFR 97.706(e)]

5.7.43 Liability. 1.) Any provision of the TR SO2 Group 2 Trading Program that applies to a TR SO2 Group 2 source or the designated representative of a TR SO2 Group 2 source shall also apply to the Permittee. 2.) Any provision of the TR SO2 Group 2 Trading Program that applies to a TR SO2 Group 2 unit or the designated representative of a TR SO2 Group 2 unit shall also apply to the Permittee. [40 CFR 97.706(f)]

5.7.44 Effect on other authorities. No provision of the TR SO2 Group 2 Trading Program or exemption under 40 CFR Section 97.705 shall be construed as exempting or excluding the Permittee, and the designated representative, of a TR SO2 Group 2 source or TR SO2 Group 2 unit from compliance with any other provision of the applicable, approved state implementation plan, a federally enforceable permit, or the Clean Air Act. [40 CFR 97.706(g)]

EQUI 46 MR019 Unit 5/2 CO

Dual Range Monitor

5.8.1 CEMS Certification/Recertification Test: due 120 days after the first calendar quarter following CEMS

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation installation/reinstallation. [Minn. R. 7017.1050, subp. 1]

5.8.2 CEMS Certification Test Plan: due 30 days before CEMS Certification Test CEMS Certification Test Pretest Meeting: due 7 days before CEMS Certification Test CEMS Certification Test Report: due 45 days after CEMS Certification Test CEMS Certification Test Report - Microfiche Copy: due 105 days after CEMS Certification Test The Notification, Test Plan, and Test Report may be submitted in alternate format as allowed by Minn. R. 7017.1120, subp. 2 [Minn. R. 7017.1080, Minn. R. 7017.1060]

5.8.3 Continuous Operation: CEMS must be operated and data recorded during all periods of emission unit operation including periods of emission unit start-up, shutdown, or malfunction except for periods of acceptable monitor downtime. This requirement applies whether or not a numerical emission limit applies during these periods. A CEMS must not be bypassed except in emergencies where failure to bypass would endanger human health, safety, or plant equipment. [Minn. R. 7017.1090]

5.8.4 Monitoring Data: All data points collected by a CEMS shall be used to calculate individual hourly emission averages unless another applicable requirement requires more frequent averaging. In order for an hour of data to be considered, it must contain the following minimum number of data points: A. four data points, equally spaced, if the emission unit operated during the entire hour; B. two data points, at least 15 minutes apart, during periods of monitor calibration or routine maintenance; C. one data point if the emission unit operated for 15 minutes or less during the hour. [Minn. R. 7017.1160, subp. 1, Minn. R. 7017.1160, subp. 2]

5.8.5 QA Plan: Develop and implement a written quality assurance plan that covers each CEMS. The plan shall be on site and available for inspection within 30 days after monitor certification. The plan shall contain all of the information required by 40 CFR pt. 60, Appendix F, Section 3. The plan shall include the manufacturer's spare parts list for each CEMS and require that those parts be kept at the facility or readily available from another of the Permittee's facilities, unless the Commissioner gives written approval to exclude specific spare parts from the list. [Minn. R. 7017.1170, subp. 2]

5.8.6 Requirement: CEMS Daily Calibration Drift (CD) Test: The CD shall be quantified and recorded at zero (low-level) and upscale (high-level) gas concentrations at least once daily according to the procedures listed in Minn. R. 7017.1170, subp. 3(A) and (B) and 40 CFR Section 60.13(d)(1) for each

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation pollutant concentration, each diluent monitor, and for each monitor range. The CEMS shall be adjusted whenever the CD exceeds twice the specification of 40 CFR pt. 60, Appendix B. If no span value is specified in the applicable requirement or in a compliance document, the Permittee shall use a span value equivalent to 1.5 times the emission limit. 40 CFR pt. 60, Appendix F, shall be used to determine out-of-control periods for CEMS. Follow the procedures in 40 CFR pt. 60, Appendix F. [Minn. R. 7017.1170, subp. 3]

5.8.7 Cylinder Gas Audit (CGA): due before end of each calendar half-year following Permit Issuance, except that a CGA is not required during any calendar half year in which a RATA was performed. The initial CGA must be performed within 180 days following certification of the CEMS. The CGAs shall be conducted at least three months apart but no more than eight months apart. A CGA shall be conducted according to the procedures in 40 CFR pt. 60, Appendix F, Section 5.1.2. If the monitored emission unit was operated for less than 24 hours during the calendar half year, a CGA is not required for that calendar half year. [Minn. R. 7017.1170, subp. 4]

5.8.8 Cylinder Gas Audit (CGA) Results Summary: due 30 days after end of each calendar quarter in which a CGA was conducted. [Minn. R. 7017.1180, subp. 1]

5.8.9 Relative Accuracy Test Audit (RATA) Notification: due 30 days before CEMS Relative Accuracy Test Audit (RATA). [Minn. R. 7017.1180, subp. 2]

5.8.10 Relative Accuracy Test Audit (RATA) Results Summary: due 30 days after end of each calendar quarter in which a RATA was conducted. [Minn. R. 7017.1180, subp. 3]

5.8.11 Recordkeeping: The Permittee must retain records of all CEMS monitoring data and support information for a period of five years from the date of the monitoring sample, measurement or report. Records shall be kept at the source. [Minn. R. 7017.1130]

EQUI 60 EU024 Emergency

Engine Generator EEG-61001

5.9.1 Opacity <= 20 percent opacity once operating temperatures have been attained. [Minn. R. 7011.2300, subp. 1]

5.9.2 Sulfur Dioxide <= 0.50 pounds per million Btu heat input. The potential to emit from the unit is 0.05 lb/MMBtu due to equipment design and allowable fuel. [Minn. R. 7011.2300, subp. 2]

5.9.3 Fuel type is limited to distillate fuel oil with a maximum Sulfur Content of Fuel <= 0.050 percent by weight. [Minn. R. 7007.0800, subp. 2]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.9.4 EQUI60 must be operated according to the following

requirements, or the engine will not be considered an emergency engine under 40 CFR Part 63 Subpart ZZZZ, and will be required to meet all Subpart ZZZZ requirements for non-emergency engines. (i) There is no time limit on engine use in emergency situations. (ii) The engine may be operated for the purpose of maintenance checks and readiness testing, provided that the tests are recommended by the manufacturer, the vendor, or the insurance company associated with the engine. Required testing of such units should be minimized, but there is no time limit on engine use in emergency situations and for routine testing and maintenance. (iii) The engine may be operated for an additional 50 hours per year in non-emergency situations. The 50 hours cannot be used for peak shaving or to generate income for a facility to supply power to an electric grid or otherwise supply power as part of a financial arrangement with another entity. [40 CFR 63.6640(f)(2), Minn. R. 7011.8150]

5.9.5 Fuel Supplier Certification: The Permittee shall obtain supplier certification that the sulfur content does not exceed 0.050 % by weight. The certification shall be a single certification from the fuel oil supplier guaranteeing a maximum sulfur content in all fuel oil deliveries thereafter. The single certification shall also state that the supplier will notify the Permittee in writing on the date of delivery of fuel oil with a sulfur content exceeding the guaranteed maximum, that the fuel oil sulfur content exceeds the guaranteed maximum value. The Permittee may instead choose to test the oil in the storage tank following each shipment, according to current ASTM or EPA methods and keep records of lab analyses of sulfur content. [Minn. R. 7007.0800, subp. 5]

5.9.6 Temporary replacement conditions: The Permittee may temporarily replace EQUI60, provided the following conditions are met: 1) The potential emissions of the replacement unit (assuming all enforceable limits imposed through this permit, and aggregated if more than one engine is simultaneously replaced; see COMG1, EQUI61, and EQUI90) are less than all of the following: 25 tpy PM, 15 tpy PM < 10 microns, 10 tpy PM < 2.5 microns, 40 tpy VOC, 40 tpy SO2, 40 tpy NOx, 100

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation tpy CO, 75000 tpy CO2e; 2) The Permittee must calculate the allowable potential to emit of each temporary replacement engine assuming operating conditions that are enforceable by this permit. For pollutants not specifically limited by a permit or rule, the Permittee may use emission factors generated based on the temporary replacement engine manufacturer's performance tests; 3) The capacity of the replacement unit is less than or equal to the unit it replaces; 4) The project can only be the temporary replacement of internal combustion engines for the purpose of providing emergency electrical power at the facility; 5) Emissions and operating hours are tracked and calculated as specified in this permit; 6) The replacement engine may only replace a permanent engine that is temporarily out of service for less than one year; 7) The replacement engine must meet the conditions for temporary replacement units under 40 CFR Section 60.4200(e); 8) Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment. The Permittee is not required to complete emission calculations described in Minn. R. 7007.1200 subp. 2. A permit will still be needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit. [40 CFR 60.4200(e), Minn. R. 7005.0100, subp. 35a, Minn. R. 7007.0800, Minn. R. 7007.1200, subp. 3, Minn. R. 7007.1250, Minn. R. 7007.1450, Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.9.7 The replacement engine may not be operated at the same time as the permanent unit it is replacing, except for up to 8 hours during start-up and shutdown transition periods. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.9.8 If the replacement engine does not require a permit amendment, the Permittee shall keep the following records on site for each replacement engine not requiring a permit amendment:

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation - Records required by Minn. R. 7007.1200, subp. 4; - The dates the temporary engine was installed, started operation, and was removed; - Filled form GI05B for each replacement engine with an assigned consecutive emission unit number; - A unique identification for the unit, such as make, model, and serial number; - Rated capacity and type of engine; - Dates and hours of operation of the engine; - A statement of all periods of operation during which the permanent engine being temporarily replaced is not also operating; and - Calculations of the potential to emit of the engine and emission changes pursuant to Minn. R. 7007.1200 subpart 3. [Minn. R. 7007.1200, subp. 4, , Minn. R. 7007.0800, subp. 2]

5.9.9 The Permittee shall notify the MPCA if the replacement engine is operated simultaneously with the permanent engine being temporarily replaced, except as allowed by this permit. Make verbal notification within 2 days, and written notification with the semi-annual deviations report. [Minn. R. 7007.1200, subp. 4, Minn. R. 7007.0800, subp. 5]

EQUI 61 EU025 Emergency

Engine Generator EEG-61002

5.10.1 Opacity <= 20 percent opacity once operating temperatures have been attained. [Minn. R. 7011.2300, subp. 1]

5.10.2 Sulfur Dioxide <= 0.50 pounds per million Btu heat input. The potential to emit from the unit is 0.05 lb/MMBtu due to equipment design and allowable fuels. [Minn. R. 7011.2300, subp. 2]

5.10.3 Fuel type is limited to distillate fuel oil with a maximum Sulfur Content of Fuel <= 0.050 percent by weight. [Minn. R. 7007.0800, subp. 2]

5.10.4 EQUI61 must be operated according to the following requirements, or the engine will not be considered an emergency engine under 40 CFR Part 63 Subpart ZZZZ, and will be required to meet all Subpart ZZZZ requirements for non-emergency engines. (i) There is no time limit on engine use in emergency situations. (ii) The engine may be operated for the purpose of maintenance checks and readiness testing, provided that the tests are recommended by the manufacturer, the vendor, or

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation the insurance company associated with the engine. Required testing of such units should be minimized, but there is no time limit on engine use in emergency situations and for routine testing and maintenance. (iii) The engine may be operated for an additional 50 hours per year in non-emergency situations. The 50 hours cannot be used for peak shaving or to generate income for a facility to supply power to an electric grid or otherwise supply power as part of a financial arrangement with another entity. [40 CFR 63.6640(f)(2), Minn. R. 7011.8150]

5.10.5 Fuel Supplier Certification: The Permittee shall obtain supplier certification that the sulfur content does not exceed 0.050 % by weight. The certification shall be a single certification from the fuel oil supplier guaranteeing a maximum sulfur content in all fuel oil deliveries thereafter. The single certification shall also state that the supplier will notify the Permittee in writing on the date of delivery of fuel oil with a sulfur content exceeding the guaranteed maximum, that the fuel oil sulfur content exceeds the guaranteed maximum value. The Permittee may instead choose to test the oil in the storage tank following each shipment, according to current ASTM or EPA methods and keep records of lab analyses of sulfur content. [Minn. R. 7007.0800, subp. 5]

5.10.6 Temporary replacement conditions: The Permittee may temporarily replace EQUI61, provided the following conditions are met: 1) The potential emissions of the replacement unit (assuming all enforceable limits imposed through this permit, and aggregated if more than one engine is simultaneously replaced; see COMG1, EQUI60, and EQUI90) are less than all of the following: 25 tpy PM, 15 tpy PM < 10 microns, 10 tpy PM < 2.5 microns, 40 tpy VOC, 40 tpy SO2, 40 tpy NOx, 100 tpy CO, 75000 tpy CO2e; 2) The Permittee must calculate the allowable potential to emit of each temporary replacement engine assuming operating conditions that are enforceable by this permit. For pollutants not specifically limited by a permit or rule, the Permittee may use emission factors generated based on the temporary replacement engine manufacturer's performance tests; 3) The capacity of the replacement unit is less than or equal to the unit it replaces;

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 4) The project can only be the temporary replacement of internal combustion engines for the purpose of providing emergency electrical power at the facility; 5) Emissions and operating hours are tracked and calculated as specified in this permit; 6) The replacement engine may only replace a permanent engine that is temporarily out of service for less than one year; 7) The replacement engine must meet the conditions for temporary replacement units under 40 CFR Section 60.4200(e); 8) Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment. The Permittee is not required to complete emission calculations described in Minn. R. 7007.1200 subp. 2. A permit will still be needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit. [40 CFR 60.4200(e), Minn. R. 7005.0100, subp. 35a, Minn. R. 7007.0800, Minn. R. 7007.1200, subp. 3, Minn. R. 7007.1250, Minn. R. 7007.1450, Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.10.7 The replacement engine may not be operated at the same time as the permanent unit it is replacing, except for up to 8 hours during start-up and shutdown transition periods. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.10.8 If the replacement engine does not require a permit amendment, the Permittee shall keep the following records on site for each replacement engine not requiring a permit amendment: - Records required by Minn. R. 7007.1200, subp. 4; - The dates the temporary engine was installed, started operation, and was removed; - Filled form GI05B for each replacement engine with an assigned consecutive emission unit number; - A unique identification for the unit, such as make, model, and serial number; - Rated capacity and type of engine; - Dates and hours of operation of the engine; - A statement of all periods of operation during which the permanent engine being temporarily replaced is not also operating; and

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation - Calculations of the potential to emit of the engine and emission changes pursuant to Minn. R. 7007.1200 subpart 3. [Minn. R. 7007.1200, subp. 4, , Minn. R. 7007.0800, subp. 2]

5.10.9 The Permittee shall notify the MPCA if the replacement engine is operated simultaneously with the permanent engine being temporarily replaced, except as allowed by this permit. Make verbal notification within 2 days, and written notification with the semi-annual deviations report. [Minn. R. 7007.1200, subp. 4, Minn. R. 7007.0800, subp. 5]

EQUI 62 EU027 Unit 5/2 Duct

Burner

5.11.1 Sulfur Dioxide <= 0.20 pounds per million Btu heat input 30-day rolling average. This limit applies at all times except during periods of startup, shutdown, or malfunction. Potential emissions based on combustion of natural gas at equipment capacity is approximately 0.0006 lb/MMBtu. [40 CFR 60.43Da(b)(2), 40 CFR 60.43Da(g), 40 CFR 60.48Da(a), Minn. R. 7011.0560]

5.11.2 Nitrogen Oxides <= 1.6 pounds per megawatt-hour 30-day rolling average (gross energy output). This limit applies at all times except during periods of startup, shutdown, or malfunction. [40 CFR 60.44Da(a)(1), 40 CFR 60.48Da(a), Minn. R. 7011.0560]

5.11.3 Operating Hours <= 1500 hours per year 12-month rolling sum. [Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.11.4 Sulfur Content of Fuel <= 0.004 grains per dry standard cubic foot 12-month rolling average. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.11.5 Fuel usage is limited to pipeline quality natural gas. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.11.6 Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain the EQUI62 operating hours. [Minn. R. 7007.0800, subp. 5, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.11.7 Monthly Recordkeeping: Hours of operation By the 15th of the month, the Permittee shall calculate and record the following: 1) The total hours of operation for the previous calendar month using the daily records; and 2) The 12-month rolling sum of operating hours for the

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation previous 12-month period by summing the monthly operating hours for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

5.11.8 The Permittee shall determine the mass rate (lb/h) of NOx emissions by installing, operating, and maintaining continuous fuel flowmeters following the appropriate measurements procedures specified in appendix D of 40 CFR Part 75. The emission rate (E) of NOx shall be computed using the following equation: E = (ER x H) / O Where: E = Emission rate of NOx from the duct burner, in lb/MWh gross energy output ER = Average hourly emission rate of NOx exiting the steam generating unit heat input calculated using appropriate F factor as described in Method 19 of appendix A of 40 CFR Part 60, in lb/MMBtu H = Average hourly heat input rate of entire combined cycle unit, in MMBtu/h O = Average hourly gross energy output from entire combined cycle unit, in MW. [40 CFR 60.48Da(k)(2)(iv), Minn. R. 7011.0560]

EQUI 90 EU028 Fire Pump 5.12.1 Opacity <= 20 percent opacity once operating temperatures

have been attained. [Minn. R. 7011.2300, subp. 1] 5.12.2 Sulfur Dioxide <= 0.50 pounds per million Btu heat input The

potential to emit from the unit is 0.05 lb/MMBtu due to equipment design and allowable fuel. [Minn. R. 7011.2300, subp. 2]

5.12.3 Sulfur Content of Fuel <= 0.050 percent by weight. [Minn. R. 7007.0800, subps. 4-5]

5.12.4 Fuel type: Distillate fuel oil only, by design [Minn. R. 7005.0100, subp. 35a]

5.12.5 Fuel Supplier Certification: The Permittee shall obtain supplier certification that the sulfur content does not exceed 0.050 % by weight. The certification shall be a single certification from the fuel oil supplier guaranteeing a maximum sulfur content in all fuel oil deliveries thereafter. The single certification shall also state that the supplier will notify the Permittee in writing on the date of delivery of fuel oil with a sulfur content exceeding the guaranteed maximum,

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation that the fuel oil sulfur content exceeds the guaranteed maximum value. The Permittee may instead choose to test the oil in the storage tank following each shipment, according to current ASTM or EPA methods and keep records of lab analyses of sulfur content. [Minn. R. 7007.0800, subps. 4-5]

5.12.6 Hours of Operation: The Permittee shall maintain documentation on site that the unit is an emergency generator by design that qualifies under the U.S. EPA memorandum entitled "Calculating Potential to Emit (PTE) for Emergency Generators" dated September 6, 1995, limiting operation to 500 hours per year. [Minn. R. 7007.0800, subps. 4-5]

5.12.7 The Permittee shall at all times operate and maintain the engine, including any associated air pollution control equipment or monitoring equipment, in a manner consistent with safety and good air pollution control practices for minimizing emissions. The general duty to minimize emissions does not require any further efforts to reduce emissions if levels required by Subpart ZZZZ have been achieved. Determination of whether such operation and maintenance procedures are being used will be based on information available to the Administrator 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 63.6605(b), Minn. R. 7011.8150]

5.12.8 The Permittee shall meet the following requirements: a. Change oil and filter every 500 hours of operation or annually, whichever comes first; b. Inspect air cleaner every 1,000 hours of operation or annually, whichever comes first; c. Inspect all hoses and belts every 500 hours of operation or annually, whichever comes first, and replace as necessary. [40 CFR 63.6602, 40 CFR pt. 63, Subp. ZZZZ(Table 2c), Minn. R. 7011.8150]

5.12.9 During periods of startup, the Permittee shall minimize the engine's time spent at idle and minimize the engine's startup time at startup to a period needed for appropriate and safe loading of the engine, not to exceed 30 minutes, after which time the non-startup emission limits apply. [40 CFR 63.6602, 40 CFR 63.6625(h), 40 CFR pt. 63, Subp. ZZZZ(Table 2c), Minn. R. 7011.8150]

5.12.10 The Permittee has the option of utilizing an oil analysis

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation program in order to extend the specified oil change requirement in Table 2C to Subpart ZZZZ. The oil analysis must be performed at the same frequency specified in Table 2C. The analysis program must at a minimum analyze the Total Base Number, viscosity, and percent water content. The condemning numbers for these parameters are as follows: Total Base Number is less than 30 percent of the Total Base Number of the oil when new; viscosity of the oil has changed by more than 20 percent from the viscosity of the oil when new; or percent water content (by volume) is greater than 0.5. If none of the condemning values are exceeded, the Permittee is not required to change the oil. If any of the condemning limits are exceeded, the Permittee shall change the oil within 2 days of receiving the results of the analysis; if the engine is not in operation when the results are received, the Permittee shall change the oil within 2 days or before commencing operation, whichever is later. The Permittee shall keep records of the parameters that are analyzed as part of the program, the results of the analysis, and the oil changes for the engine. The analysis program must be part of the maintenance plan for the engine. [40 CFR 63.6625(i), 40 CFR pt. 63, subp. ZZZZ(Table 2C), Minn. R. 7011.8150]

5.12.11 The Permittee shall operate and maintain the engine and after-treatment control device (if any) according to the manufacturer's emission-related written instructions or develop a maintenance plan which must provide to the extent practicable for the maintenance and operation of the engine in a manner consist with good air pollution control practice for minimizing emissions. [40 CFR 63.6625(e), Minn. R. 7011.8150]

5.12.12 The Permittee shall install a non-resettable hour meter if one is not already installed. [40 CFR 63.6625(f), Minn. R. 7011.8150]

5.12.13 The Permittee shall be in continuous compliance with the applicable requirements of Table 2C to 40 CFR pt. 63, Subpart ZZZZ. [40 CFR 63.6640(a), Minn. R. 7011.8150]

5.12.14 The Permittee shall report each instance in which the applicable operating limitation was not met. These instances are deviations from the operating limitations in 40 CFR pt. 63, Subpart ZZZZ. These deviations shall be reported according to the requirements of 40 CFR Section 63.6650. [40 CFR 63.6640(b), Minn. R. 7011.8150]

5.12.15 The Permittee must operate the emergency stationary RICE according to the requirements in 40 CFR Section 63.6640(f)(1), (f)(2)(i), and (f)(4). In order for the engine to be considered an emergency stationary RICE under 40 CFR pt. 63, subpart ZZZZ, any operation other than emergency

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation operation, maintenance and testing, and operation in non-emergency situations for 50 hours per year, as described in 40 CFR Section 63.6640(f)(1)(i) and (f)(4), is prohibited. If the Permittee does not operate the engine according to the requirements in 40 CFR Section 63.6640(f), the engine will not be considered an emergency engine under this subpart and must meet all requirements for non-emergency engines. [40 CFR 63.6640(f), Minn. R. 7011.8150]

5.12.16 There is no time limit on the use of emergency stationary RICE in emergency situations. [40 CFR 60.6640(f)(1), Minn. R. 7011.8150]

5.12.17 The Permittee may operate the emergency stationary RICE for the purposes specified in 40 CFR Section 63.6640(f)(2)(i) for a maximum of 100 hours per calendar year. Any operation for non-emergency situations as allowed by 40 CFR Section 63.6640(f)(3) counts as part of the 100 hours per calendar year. On May 1st, 2015, the District Court of Columbia Circuit Court vacated the provisions of 40 CFR Section 63.6640(f)(2) that allow operation of an emergency generator without emissions controls for up to 100 hours per year as part of an emergency demand-response program. On May1, 2016 the D.C Circuit Court's mandate to vacate the provision became effective, therefore the Permittee may not operate according to the provisions at 40 CFR Section 63.6640(f)(2)(ii) or (f)(2)(iii) as part of the 100 hours per calendar year. [40 CFR 63.6640(f)(2), Minn. R. 7011.8150]

5.12.18 The Permittee may operate the emergency stationary RICE for maintenance checks and readiness testing, provided that the tests are recommended by federal, state or local government, the manufacturer, the vendor, the regional transmission organization or equivalent balancing authority and transmission operator, or the insurance company associated with the engine. The Permittee may petition the Administrator for approval of additional hours to be used for maintenance checks and readiness testing, but a petition is not required if the Permittee maintains records indicating that federal, state, or local standards require maintenance and testing of emergency RICE beyond 100 hours per calendar year. [40 CFR 63.6640(f)(2)(i), Minn. R. 7011.8150]

5.12.19 The Permittee may operate the emergency stationary RICE for up to 50 hours per calendar year in non-emergency situations. The 50 hours of operation in non-emergency situations are counted as part of the 100 hours per calendar year for maintenance and testing provided in 40 CFR Section 63.6640(f)(2). The 50 hours per year for non-emergency situations cannot be used for peak shaving or to generate income for a facility to supply power to an electric grid or

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation otherwise supply power as part of a financial arrangement with another entity. [40 CFR 63.6640(f)(3), Minn. R. 7011.8150]

5.12.20 The Permittee shall keep records of the maintenance conducted on the stationary RICE in order to demonstrate that the engine and after-treatment control device (if any) was operated and maintained according to the maintenance plan. [40 CFR 63.6655(e), Minn. R. 7011.8150]

5.12.21 The Permittee shall keep records of all engine operating hours, and record whether the use was emergency operation, maintenance and testing, or non-emergency operation. [Minn. R. 7007.0800, subp. 5]

5.12.22 Records shall be in a form suitable and readily available for expeditious review according to 40 CFR Section 63.10(b)(1). Each record shall be kept for 5 years following the date of each occurrence, measurement, maintenance, corrective action, report, or record. Each record shall be accessible in hard copy or electronic form. [40 CFR 63.6660(a)-(c), Minn. R. 7011.8150]

5.12.23 The following parts of the General Provisions apply: 40 CFR Sections 63.1, 63.2, 63.3, 63.4, 63.5, 63.6(a), 63.6(c)(1)-(2), 63.6(f)(2)-(3), 63.6(g)(1)-(3), 63.6(i), 63.6(j), 63.7(a)(3), 63.8(a)(1), 63.8(b)(1), 63.9(a), 63.10(a), 63.10(b)(1), 63.10(b)(2)(vi)-(xii), 63.10(b)(2)(xiv), 63.10(b)(3), 63.12, 63.13, 63.14, and 63.15. [40 CFR 63.6665, Minn. R. 7011.8150]

5.12.24 The Permittee shall report each instance in which the applicable General Provisions, listed above, were not met. [40 CFR 63.6640(e), Minn. R. 7011.8150]

5.12.25 Temporary replacement conditions: The Permittee may temporarily replace EQUI90, provided the following conditions are met: 1) The potential emissions of the replacement unit (assuming all enforceable limits imposed through this permit, and aggregated if more than one engine and/or boiler is simultaneously replaced; see COMG1) are less than all of the following: 25 tpy PM, 15 tpy PM < 10 microns, 10 tpy PM < 2.5 microns, 40 tpy VOC, 40 tpy SO2, 40 tpy NOx, 100 tpy CO, 75000 tpy CO2e; 2) The Permittee must calculate the allowable potential to emit of each temporary replacement engine assuming operating conditions that are enforceable by this permit. For pollutants not specifically limited by a permit or rule, the Permittee may use emission factors generated based on the temporary replacement engine manufacturer's performance tests.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 3) The capacity of the replacement unit is less than or equal to the capacity of EQUI90; 4) The project can only be the temporary replacement of the internal combustion engine for the purpose of providing emergency electrical power at the facility; 5) Emissions and operating hours are tracked and calculated as specified in this permit; 6) The replacement engine may only replace EQUI90 when EQUI90 is temporarily out of service for less than one year; 7) The equipment must meet all other requirements for EQUI90 OR the replacement engine may not be on site for more than 1 year and must meet the conditions for temporary replacement units under 40 CFR Section 60.4200(e); and 8) Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment as applicable. The Permittee is not required to complete emission calculations described in Minn. R. 7007.1200 subp. 2. A permit will still be needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit. [40 CFR 60.4200(e), Minn. R. 7005.0100, subp. 35a, Minn. R. 7007.0800, Minn. R. 7007.1200, subp. 3, Minn. R. 7007.1250, Minn. R. 7007.1450, Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.12.26 The replacement engine may not be operated at the same time as EQUI90, except for up to 8 hours during start-up and shutdown transition periods. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.12.27 If the replacement engine does not require a permit amendment, the Permittee shall keep the following records on site for each replacement engine: - Records required by Minn. R. 7007.1200, subp. 4; - The dates the temporary engine was installed, started operation, and was removed; - Filled form GI05B for each replacement engine with an assigned consecutive emission unit number; - A unique identification for the unit, such as make, model, and serial number; - Rated capacity and type of engine; - Dates and hours of operation of the engine; - A statement of all periods of operation during which

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation EQUI90 is not also operating; and - Calculations of the potential to emit of the engine and emission changes pursuant to Minn. R. 7007.1200 subpart 3. [Minn. R. 7007.0800, subp. 2, Minn. R. 7007.1200, subp. 4, Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000]

5.12.28 The Permittee shall notify the MPCA if the replacement engine is operated simultaneously with EQUI90, except as allowed by this permit. Make verbal notification within 2 days, and written notification with the semi-annual deviations report. [Minn. R. 7007.0800, subp. 5, Minn. R. 7007.1200, subp. 4]

EQUI 91 EU029 Auxiliary Boiler 5.13.1 Recordkeeping: By the last day of each calendar month, the

Permittee shall record the amount of natural gas combusted in the boilers during the previous calendar month. These records shall consist of purchase records, receipts, or fuel meter readings. [40 CFR 60.48c(g), Minn. R. 7011.0570]

5.13.2 The Permittee shall maintain records required by 40 CFR pt. 60, subp. Dc for a period of two years following the date the record was made. [40 CFR 60.48c(i), Minn. R. 7011.0570]

5.13.3 Recordkeeping: The Permittee shall maintain a file of all measurements, maintenance, reports and records for at least five years. This requirement is more stringent than 40 CFR Section 60.7(f), which specifies two years. [40 CFR 60.7(f), Minn. R. 7007.0800, subp. 5(C), Minn. R. 7019.0100, subp. 1]

5.13.4 Recordkeeping: The Permittee shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of the facility including; any malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. [40 CFR 60.7(b), Minn. R. 7019.0100, subp. 1]

5.13.5 At all times, including periods of startup, shutdown, and malfunction, the Permittee shall, to the extent practicable, maintain and operate EQUI91 in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the MPCA which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. [40 CFR 60.11(d), Minn. R. 7017.2015]

5.13.6 The Permittee shall submit a notification of any physical or operational change which increases emission rate: due 60 days (or as soon as practical) before the change is

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation commenced. [40 CFR 60.7(a)(4), Minn. R. 7019.0100, subp. 1]

5.13.7 The affected source of 40 CFR pt. 63, subp. DDDDD is the collection at a major source of all existing industrial, commercial, and institutional boilers and process heaters within a subcategory as defined in 40 CFR Section 63.7575. These units are part of the subcategory "units designed to burn gas 1 fuels". [40 CFR 63.7490]

5.13.8 The Permittee must conduct a tune-up of the boiler or process heater annually as specified in 40 CFR Section 63.7540. [40 CFR 63.7500(a)(1), 40 CFR pt. 63, subp. DDDDD(Table 3)]

5.13.9 Boilers in the "units designed to burn gas 1 fuels" subcategory are not subject to the emission limits in Table 1 and 2 or 11 through 13 of 40 CFR pt. 63, subpart DDDDD or the operating limits in Table 4 of the subpart. [40 CFR 63.7500(e)]

5.13.10 At all times, the Permittee must operate and maintain any affected source, including 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 available to the Administrator that 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 63.7500(a)(3)]

5.13.11 Circumvention. The Permittee shall not build, erect, install, or use any article, machine, equipment, or process to conceal an emission that would otherwise constitute noncompliance with a relevant standard. Such concealment includes, but is not limited to: (1) The use of diluents to achieve compliance with a relevant standard based on the concentration of a pollutant in the effluent discharged to the atmosphere; or (2) The use of gaseous diluents to achieve compliance with a relevant standard for visible emissions. [40 CFR 60.12, 40 CFR 63.4(b), Minn. R. 7011.0050, Minn. R. 7011.7000]

5.13.12 The standards under 40 CFR Section 63.7500 apply at all times the affected unit is operating, except during periods of startup and shutdown during which time the Permittee must comply only with Table 3 to Subpart DDDDD of Part 63. [40 CFR 63.7500(f)]

5.13.13 The Permittee must be in compliance with the work practice standards in 40 CFR pt. 63, subp. DDDDD. [40 CFR 63.7505(a)]

5.13.14 The Permittee must conduct the first annual tune-up no later

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation than 13 months after the initial startup of the boiler. Thereafter each annual tune-up specified in 40 CFR Section 63.7540(a)(10) must be no more than 13 months after the previous tune-up. [40 CFR 63.7510(g), 40 CFR 63.7515(d)]

5.13.15 The Permittee must conduct an annual tune-up of the boiler or process heater to demonstrate continuous compliance as specified below: 1. As applicable, inspect the burner, and clean or replace any components of the burner as necessary (the Permittee may delay the burner inspection until the next scheduled unit shutdown). Units that produce electricity for sale may delay the burner inspection until the first outage, not to exceed 36 months from the previous inspection. At units where entry into a piece of process equipment or into a storage vessel is required to complete the tune-up inspections, inspections are required only during planned entries into the storage vessel or process equipment; 2. Inspect the flame pattern, as applicable, and adjust the burner as necessary to optimize the flame pattern. The adjustment should be consistent with the manufacturer's specifications, if available; 3. Inspect the system controlling the air-to-fuel ratio, as applicable, and ensure that it is correctly calibrated and functioning properly (the Permittee may delay the inspection until the next scheduled unit shutdown). Units that produce electricity for sale may delay the inspection until the first outage, not to exceed 36 months from the previous inspection; 4. Optimize total emissions of CO. This optimization should be consistent with the manufacturer's specifications, if available, and with any NOx requirement to which the unit is subject; 5. Measure the concentrations in the effluent stream of CO in parts per million, by volume, and oxygen in volume percent, before and after the 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). Measurements may be taken using a portable CO analyzer; and 6. Maintain on-site and submit, if requested by the Administrator, an annual report containing the information below: i. The concentrations of CO in the effluent stream in parts per

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation million by volume, and oxygen in volume percent, measured at high fire or typical operating load, before and after the tune-up of the boiler or process heater; ii. A description of any corrective actions taken as a part of the tune-up; and iii. The type and amount of fuel used over the 12 months prior to the tune-up, but only if the unit was physically and legally capable of using more than one type of fuel during that period. Units sharing a fuel meter may estimate the fuel used by each unit. [40 CFR 63.7540(a)(10)]

5.13.16 If the unit is not operating on the required date for a tune-up, the tune-up must be conducted within 30 calendar days of startup. [40 CFR 63.7540(a)(13)]

5.13.17 The Permittee must submit a Notification of Compliance Status for each boiler or process heater before the close of business on the 60th day following the completion of all initial compliance demonstrations for all boiler or process heaters at the facility. The Notification of Compliance Status report must contain all the information specified below: 1. A description of the affected unit(s) including identification of which subcategories the unit is in, the design heat input capacity of the unit, a description of the add-on controls used on the unit to comply with this subpart, description of the fuel(s) burned, including whether the fuel(s) were a secondary material determined by the Permittee or the EPA through a petition process to be a non-waste under 40 CFR Section 241.3, whether the fuel(s) were a secondary material processed from discarded non-hazardous secondary materials within the meaning of 40 CFR Section 241.3, and justification for the selection of fuel(s) burned during the compliance demonstration. 2. A signed certification that the Permittee has met all applicable emission limits and work practice standards. 3. If there was a deviation from any emission limit, work practice standard, or operating limit, submit a description of the deviation, the duration of the deviation, and the corrective action taken in the Notification of Compliance Status report. 4. In addition to the information required in 40 CFR Section 63.9(h)(2), the notification of compliance status must include the following certification(s) of compliance, as applicable, and signed by a responsible official: i. This facility complies with the required initial tune-up according to the procedures in 40 CFR Section 63.7540(a)(10)(i) through (vi).

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation ii. This facility has had an energy assessment performed according to 40 CFR Section 63.7530(e). [40 CFR 63.7530(f), 40 CFR 63.7545(a), 40 CFR 63.7545(e)(1)-(8), 40 CFR 63.9(h)(2)(ii), Minn. R. 7019.0100]

5.13.18 Notification of Compliance Status Contents: The notification shall be signed by the responsible official who shall certify its accuracy, and shall list: 1. The methods that were used to determine compliance; 2. The results of any performance tests, opacity or visible emission observations, continuous monitoring system (CMS) performance evaluations, and/or other monitoring procedures or methods that were conducted; 3. The methods that will be used for determining continuing compliance, including a description of monitoring and reporting requirements and test methods; 4. The type and quantity of hazardous air pollutants emitted by the source (or surrogate pollutants if specified in the relevant standard), reported in units and averaging times and in accordance with the test methods specified in the relevant standard; 5. If the relevant standard applies to both major and area sources, an analysis demonstrating whether the affected source is a major source (using the emissions data generated for this notification); 6. A description of the air pollution control equipment (or method) for each emission point, including each control device (or method) for each hazardous air pollutant and the control efficiency (percent) for each control device (or method); and 7. A statement by the owner or operator of the affected existing source as to whether the source has complied with the relevant standard or other requirements. [40 CFR 63.7545(a), 40 CFR 63.9(h)(2)(i)(A)-(G), Minn. R. 7019.0100]

5.13.19 The Permittee must submit a signed statement in the Notification of Compliance Status report that indicates that a tune-up of the boiler or process heater was conducted. [40 CFR 63.7530(d)]

5.13.20 A Compliance Report must contain the following: 1. Company and Facility name and address; 2. Date of report and beginning and ending dates of the reporting period;

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 3. The total operating time during the reporting period; 4. The date of the most recent tune-up. Include the date of the most recent burner inspection if it was not done annually and was delayed until the next scheduled or unscheduled unit shutdown. 5. If there were no deviations from the requirements for work practice standards for periods of startup and shutdown in Table 3 of 40 CFR pt. 63, subp. DDDDD that apply, include a statement that there were no deviations from the emission limitations and work practice standards during the reporting period. [40 CFR 63.7550(b), 40 CFR 63.7550(a), 40 CFR pt. 63, subp. DDDDD(Table 9)]

5.13.21 The Permittee must submit all reports required by 40 CFR pt. 63, subp. DDDDD, Table 9 electronically using CEDRI that is accessed through the EPA's Central Data Exchange (CDX) (www.epa.gov/cdx). However, if the reporting form specific to 40 CFR pt. 63, subp. DDDDD is not available in CEDRI at the time that the report is due, the Permittee must submit the report to the Administrator at the appropriate address listed in 40 CFR Section 63.13. At the discretion of the Administrator, you must also submit these reports, to the Administrator in the format specified by the Administrator. [40 CFR 63.7550(h)(3)]

5.13.22 The Permittee must keep records of each notification and report that is submitted to comply with 40 CFR pt. 63, subp. DDDDD, including all documentation supporting any Initial Notification or Notification of Compliance Status or biennial compliance report that is submitted, according to the requirements in 40 CFR Section 63.10(b)(2)(xiv). [40 CFR 63.7555(a)(1)]

5.13.23 The Permittee must maintain records of the calendar date, time, occurrence and duration of each startup and shutdown and the types and amounts of fuels used during each startup and shutdown. [40 CFR 63.7555(i), 40 CFR 63.7555(j)]

5.13.24 Recordkeeping: The Permittee shall maintain files of all information required by 40 CFR pt. 63 in a form suitable and readily available for expeditious inspection and review. The files should be retained for at least 5 years following the date of each occurrence, measurement, maintenance, corrective action, report, or record. Only the most recent two years of information must be kept on site. [40 CFR 63.10(b)(1), 40 CFR 63.7560, Minn. R. 7019.0100, subp. 2(B)]

5.13.25 The Permittee shall maintain, at a minimum, the following information in the files: The occurrence and duration of each startup, shutdown, or malfunction of operation when the startup or shutdown causes the source to exceed any applicable emission limitation in the relevant emission standards. [40 CFR 63.10(b)(2)(i), Minn. R. 7019.0100, subp.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 2(B)]

EQUI 92 EU030 Unit 6 Simple

Cycle Combustion Turbine

5.14.1 This source is subject to the U.S. EPA Acid Rain Program codified at 40 CFR pts. 72, 73, and 75. Combustion turbine EQUI92 is a utility unit that also is a gas-fired unit and a new unit, as defined in 40 CFR Section 72.2. The Permittee's application for an acid rain permit for the combustion turbines is attached in Appendix D to this permit. [40 CFR pt. 72, 40 CFR pt. 73, 40 CFR pt. 75]

5.14.2 The Permittee shall comply with the applicable Acid Rain emissions limitation for sulfur dioxide. [40 CFR 72.9(c)(1)(ii), 40 CFR 72.9(g)(4)]

5.14.3 The Permittee shall hold allowances as of the allowance transfer deadline, in the unit's compliance subaccount, not less than the total annual emissions of sulfur dioxide for the previous calendar year. Allowances shall be held in, deducted from, or transferred among Allowance Tracking System accounts in accordance with the Acid Rain Program. [40 CFR 72.9(c)(1)(i), 40 CFR 72.9(g)(4)]

5.14.4 If EQUI92 has excess emissions, the designated representative shall submit a proposed offset plan in accordance with 40 CFR Section 72.9(e). [40 CFR 72.9(e)]

5.14.5 The Permittee shall certify Acid Rain Program submittals. Each submission under the Acid Rain Program shall be submitted, signed, and certified by the designated representative or the alternative designated representative for all sources on behalf of which the submission is made in accordance with 40 CFR Section 72.21. [40 CFR 72.21, 40 CFR 72.22]

5.14.6 The Permittee shall keep on site or readily accessible at another site each of the following documents for a period of 5 years from the date the document is created: - The certificate of representation; - All emission monitoring information; - Copies of all reports, compliance certifications, and other submissions or records made under the Acid Rain Program; and - Copies of all documents used to complete an acid rain permit application. [40 CFR 72.9(f)(1)]

5.14.7 The Permittee shall apply for Acid Rain Program Permit reissuance: The designated representative shall submit a complete Acid Rain permit application for each source with an affected unit at least 6 months prior to the expiration of an existing Acid Rain Permit in accordance with 40 CFR

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Section 72.30(c). [40 CFR 72.30(c)]

5.14.8 [Stage 1] The Permittee must commence construction of EQUI92 prior to August 16, 2020. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.9 [Stage 1] The shakedown period for EQUI92 is defined as the period of time commencing on the date of initial startup and terminating: 1. 180 days after initial startup of the unit; 2. 60 days after achieving maximum production of EQUI92; or 3. Upon submittal of successful compliance test and CEMS certification reports for EQUI92; whichever date is earliest. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) (i) and Minn. R. 7007.3000]

5.14.10 [Stage 1] The Permittee shall limit Heat Input <= 6458 trillion Btu per year 12-month rolling sum basis. This limit does not apply until after the shakedown period ends. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.11 Heat Input: [Stage 1] Monthly Recordkeeping: By the 15th of the month, the Permittee shall calculate and record the following: 1) The total heat input (MMBtu) for EQUI92 for the previous calendar month, by multiplying the total fuel usage for the previous calendar month by the energy content of the fuel. The energy content used can be the content listed on fuel supplier specifications, or assumed to be 1020 Btu/scf. 2) The 12 month rolling sum heat input for the previous 12 month period by summing the monthly heat input data for the previous 12 months. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.12 [Stage 1] The Permittee shall limit Start-up Shut-down (SUSD) Operating Hours <= 260 hours per year 12-month rolling sum basis to be calculated by the 15th day of each month for the previous 12-month period as described later in this permit. This limit does not apply until after the shakedown period ends. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.14.13 Operating Hours: [Stage 1]

Daily Recordkeeping: For each SUSD event the Permittee shall record and maintain a record of the start time and stop time of the event. A startup event begins when fuel flow to the combustion chamber starts, and ends when the control parameter "L8MECL" reads "TRUE". A shutdown event begins when the control parameter "L8MECL" reads "FALSE", and ends when fuel flow to the combustion chamber ceases. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.14 Operating Hours: [Stage 1] Monthly Recordkeeping: By the 15th of the month, the Permittee shall calculate and record the following: 1) The total amount of time spent in SUSD mode for the previous calendar month using the SUSD event record. 2) The 12-month rolling sum of SUSD hours for the previous 12-month period by summing the SUSD monthly hours for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

5.14.15 [Stage 1] Fuel type: Natural gas only. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.16 [Stage 1] The Permittee shall maintain purchase records for all fuel used at EQUI92 demonstrating that the turbine combusts natural gas only. The Permittee shall maintain these records as specified in 40 CFR Section 60.7(b) and (f) and under 40 CFR pt. 75, subp. F. [40 CFR 60.5520(d), 40 CFR 60.5520(d)(1), 40 CFR 60.5525, 40 CFR 60.5535(a), Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.17 The Permittee shall limit Sulfur Dioxide <= 0.060 pounds per million Btu heat input (26.0 nanograms SO2 per Joule of heat input). [40 CFR 60.4330(a)(2)]

5.14.18 The Permittee shall limit Nitrogen Oxides <= 4.7 pounds per megawatt-hour 4-hour rolling average (96 ppm by volume at 15 percent O2 or 590 nanograms per Joule of useful output) when turbine is operating at less than 75 percent of peak load or operating at ambient temperature less than 0 degrees Fahrenheit. [40 CFR 60.4320(a), 40 CFR pt. 60, subp. KKKK(Table1)]

5.14.19 The Permittee shall limit Nitrogen Oxides <= 0.43 pounds per megawatt-hour 4-hour rolling average (15 ppm at 15% Oxygen or 54 nanograms per Joule of useful output) when EQUI92 is operating at greater than or equal to 75 percent of peak load and operating at temperatures greater than or equal to 0 degrees Fahrenheit. [40 CFR 60.4320(a), 40 CFR pt. 60, subp. KKKK(Table 1)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.14.20 The Permittee shall limit Carbon Dioxide <= 120 pounds per

million Btu heat input (50 kilograms carbon dioxide per gigajoule of heat input). [40 CFR 60.5520(a), 40 CFR 60.5520(b)]

5.14.21 Opacity <= 20 percent opacity once operating temperatures have been attained. [Minn. R. 7011.2300, subp. 1]

5.14.22 Sulfur Dioxide <= 0.50 pounds per million Btu heat input The potential to emit from the unit is 0.0034 lb/MMBtu due to equipment design and allowable fuel. [Minn. R. 7011.2300, subp. 2]

5.14.23 The Permittee shall operate and maintain EQUI92, TREA39, EQUI93, and EQUI94 in a manner consistent with good air pollution control practices for minimizing emission at all times including during startup, shutdown, and malfunction. [40 CFR 60.4333(a)]

5.14.24 [Stage 1] The Permittee shall install, calibrate, maintain, and operate a continuous monitoring system (CEMS) consisting of a NOx monitor and diluent gas (oxygen) monitor, to determine the hourly NOx emission rate in parts per million (ppm) or pound per million British thermal units (lb/MMBtu). Additional requirements for the NOx CEMS are at COMG11. The Permittee shall install, calibrate, maintain, and operate a fuel flow meter to continuously measure the heat input to EQUI92. The Permittee shall install, calibrate, maintain, and operate a watt meter to continuously measure the gross electrical output of EQUI92. [40 CFR 60.4335(b)(1)-(3), 40 CFR 60.4340(b), Minn. R. 7017.1006, Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2)(i) and Minn. R. 7007.3000]

5.14.25 Each fuel flowmeter shall be installed, calibrated, maintained, and operated according to the manufacturer's instructions. Alternatively, with state approval, fuel flowmeters that meet the installation, certification, and quality assurance requirements of 40 CFR pt. 75, Appendix D are acceptable for use under 40 CFR pt. 60, subp. KKKK. [40 CFR 60.4345(c)]

5.14.26 The Permittee shall install, calibrate, maintain, and operate each watt meter according to manufacturer's instructions. [40 CFR 60.4345(d)]

5.14.27 The Permittee may elect not to monitor the total sulfur content of the fuel combusted in the turbine, if the fuel is demonstrated not to exceed potential sulfur emissions of 26 ng SO2/J (0.060 lb SO2/MMBtu) heat input. The Permittee must use one of the following sources of information to make this demonstration:

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation (a) The fuel quality characteristics in a current, valid purchase contract, tariff sheet or transportation contract for the fuel, specifying that the total sulfur content for natural gas use is 20 grains of sulfur or less per 100 standard cubic feet; or (b) Representative fuel sampling data which show that the sulfur content of the fuel does not exceed 26 ng SO2/J (0.060 lb SO2/MMBtu) heat input. At a minimum, the amount of fuel sampling data specified in 40 CFR pt. 75, Appendix D, Section 2.3.1.4 or 2.3.2.4 is required. [40 CFR 60.4365]

5.14.28 The Permittee must conduct an initial performance test for NOx, as required in 40 CFR Section 60.8 (except as specified in 40 CFR Section 60.8(a)(1), (a)(2), (a)(3), and (a)(4)), using one of the following methodologies for each test run: (i) Measure the NOx concentration (in ppm), using EPA Method 7E or EPA Method 20 of 40 CFR pt. 60, Appendix A. For units complying with the output based standard, concurrently measure the stack gas flow rate, using EPA Methods 1 and 2 of 40 CFR pt. 60, Appendix A and measure and record the electrical and thermal output from the unit. Then, use the Equation 5 in 40 CFR Section 60.4395(a)(1)(i) to calculate the NOx emission rate; or (ii) Measure the NOx and diluent gas concentrations, using either EPA Methods 7E and 3A, or EPA Method 20 of 40 CFR pt. 60, Appendix A. Concurrently measure the heat input to the unit, using a fuel flowmeter (or flowmeters), and measure the electrical and thermal output of the unit. Use EPA Method 19 in 40 CFR pt. 60, Appendix A to calculate the NOx emission rate in lb/MMBtu. Then, use Equations 1 and, if necessary, 2 and 3 in 40 CFR Section 60.4350(f) to calculate the NOx emission rate in lb/MWh. Sampling traverse points shall be selected as described at 40 CFR Section 60.440(a)(2) or (3). The performance test must be done at any load condition within plus or minus 25 percent of 100 percent of peak load. The Permittee may perform testing at the highest achievable load point, if at least 75 percent of peak load cannot be achieved in practice. The Permittee must conduct three separate test runs for each performance test with a minimum time per run of 20 minutes. Compliance with the applicable emission limit in 40 CFR Section 60.4320 must be demonstrated at each tested load level. Compliance is achieved if the three-run arithmetic average NOx emission rate at each tested level meets the applicable emission limit in 40 CFR Section 60.4320. The ambient temperature must be greater than zero degrees

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation F during the performance test. [40 CFR 60.4400(a)(1)-(3), 40 CFR 60.4400(b), 40 CFR 60.4400(b)(4), 40 CFR 60.4400(b)(6)]

5.14.29 The performance evaluation of the CEMS may be conducted either separately from the initial performance test or (as described in 40 CFR 60.4405) as part of the initial performance test. [40 CFR 60.4400(b)(5)]

5.14.30 As an alternative to the performance testing requirements at 40 CFR Section 60.4400 the initial performance test may be performed using NOx-diluent CEMS as follows: a) Perform a minimum of nine RATA reference method runs with a minimum time per run of 21 minutes, at a single load level, within plus or minus 25 percent of 100 percent of peak load. The ambient temperature must be greater than 0 degrees F during the RATA runs. b) For each RATA run, concurrently measure the heat input to the unit using a fuel flow meter (or flow meters) and measure the electrical and thermal output from the unit. c) Use the test data both to demonstrate compliance with the applicable NOx emission limit under 40 CFR 60.4320 and to provide the required reference method data for the RATA of the CEMS described in 40 CFR Section 60.4335. d) Compliance with the applicable emission limit in 40 CFR section 4320 is achieved if the arithmetic average of all of the NOx emission rates for the RATA runs, expressed in units of ppm or lb/MWh, does not exceed the emission limit. [40 CFR 60.4405]

5.14.31 The Permittee shall conduct performance tests required by 40 CFR pt. 60, subp. KKKK according to the general performance testing requirements at 40 CFR Section 60.8(c)-(i). [40 CFR 60.8(c)-(i), Minn. R. 7017.2015, subp. 2(A)]

5.14.32 If a force majeure is about to occur, occurs, or has occurred for which the Permittee intends to assert a claim of force majeure, the Permittee shall submit written notification as soon as practicable following the date the Permittee first knew, or through due diligence should have known that the event may cause or caused a delay in testing beyond the regulatory deadline, but the notification must occur before the performance test deadline unless the initial force majeure or a subsequent force majeure event delays the notice, and in such cases, the notification shall occur as soon as practicable. [40 CFR 60.8(a)(1), Minn. R. 7017.2015, subp. 2(A)]

5.14.33 The Permittee shall provide a written description of the force majeure event and a rationale for attributing the delay in testing beyond the regulatory deadline to the force majeure;

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation describe the measures taken or to be taken to minimize the delay; and identify a date by which the Permittee proposes to conduct the performance test. The performance test shall be conducted as soon as practicable after the force majeure occurs. [40 CFR 60.8(a)(2), Minn. R. 7017.2015, subp. 2(A)]

5.14.34 The decision as to whether or not to grant an extension to the performance test deadline is solely within the discretion of the Administrator. The Administrator will notify the Permittee in writing of approval or disapproval of the request for an extension as soon as practicable. [40 CFR 60.8(a)(3), Minn. R. 7017.2015, subp. 2(A)]

5.14.35 Until an extension of the performance test deadline has been approved by the Administrator under 40 CFR Section 60.8(a)(1), (a)(2), and (a)(3), the Permittee remains strictly subject to the requirements of 40 CFR pt. 60. [40 CFR 60.8(a)(4), Minn. R. 7017.2015, subp. 2(A)]

5.14.36 The Permittee shall submit a notification of any physical or operational change which increases emission rate: due 60 days (or as soon as practical) before the change is commenced. [40 CFR 60.7(a)(4), Minn. R. 7019.0100, subp. 1]

5.14.37 Recordkeeping: The Permittee shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of the facility including; any malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. [40 CFR 60.7(b), Minn. R. 7019.0100, subp. 1]

5.14.38 Recordkeeping: The Permittee shall maintain a file of all measurements, maintenance, reports and records for at least five years. This requirement is more stringent than 40 CFR Section 60.7(f), which specifies two years. [40 CFR 60.7(f), Minn. R. 7007.0800, subp. 5(C), Minn. R. 7019.0100, subp. 1]

5.14.39 At all times, including periods of startup, shutdown, and malfunction, the Permittee shall, to the extent practicable, maintain and operate any affected facility including associated air pollution control equipment in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Administrator which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. [40 CFR 60.11(d), Minn. R. 7017.2015, subp. 2(B)]

5.14.40 For the purpose of submitting compliance certifications or establishing whether or not the Permittee has violated or is in violation of any standard in this part, nothing in this part shall preclude the use, including the exclusive use, of any

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation credible evidence or information, relevant to whether a source would have been in compliance with applicable requirements if the appropriate performance or compliance test or procedure had been performed. [40 CFR 60.11(g), Minn. R. 7017.2015, subp. 2(B)]

5.14.41 The Permittee shall not build, erect, install, or use any article, machine, equipment or process, the use of which conceals an emission which would otherwise constitute a violation of an applicable standard. Such concealment includes, but is not limited to, the use of gaseous diluents to achieve compliance with an opacity standard or with a standard which is based on the concentration of a pollutant in the gases discharged to the atmosphere. [40 CFR 60.12, Minn. R. 7011.0050]

5.14.42 The Permittee shall furnish the Administrator within 60 days of completion two or, upon request, more copies of a written report of the results of the performance evaluation. [40 CFR 60.13(c)(2), Minn. R. 7017.1010, subp. 1(A)]

5.14.43 Transport Rule (TR) NOx Annual Trading Program Requirements The Permittee shall comply with the TR NOx Annual Trading Program requirements contained in permit Appendix C. [40 CFR 97.430-435]

5.14.44 Designated representative requirements: The Permittee shall comply with the requirement to have a designated representative, and may have an alternate designated representative, in accordance with 40 CFR Section 97.413 through 97.418. [40 CFR 97.406(a)]

5.14.45 1.) The Permittee and the designated representative, of each TR NOx Annual source and each TR NOx Annual unit at the source shall comply with the monitoring, reporting, and recordkeeping requirements of 40 CFR Section 97.430 (general requirements, including installation, certification, and data accounting, compliance deadlines, reporting data, prohibitions, and long-term cold storage), 40 CFR Section 97.431 (initial monitoring system certification and recertification procedures), 40 CFR Section 97.432 (monitoring system out-of-control periods), 40 CFR Section 97.433 (notifications concerning monitoring), 40 CFR Section 97.434 (recordkeeping and reporting, including monitoring plans, certification applications, quarterly reports, and compliance certification), and 40 CFR Section 97.435 (petitions for alternatives to monitoring, recordkeeping, or reporting requirements). 2.) The emissions data determined in accordance with 40 CFR Section 97.430 through 97.435 shall be used to calculate allocations of TR NOx Annual allowances under 40 CFR Section 97.411(a)(2) and (b) and 40 CFR Section 97.412 and to determine compliance with the TR NOx Annual emissions limitation and assurance provisions under paragraph 40 CFR Section 97.406(c) below, provided that, for each monitoring

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation location from which mass emissions are reported, the mass emissions amount used in calculating such allocations and determining such compliance shall be the mass emissions amount for the monitoring location determined in accordance with 40 CFR Section 97.430 through 97.435 and rounded to the nearest ton, with any fraction of a ton less than 0.50 being deemed to be zero. [40 CFR 97.406(b)]

5.14.46 TR NOx Annual emissions limitation. i.) As of the allowance transfer deadline for a control period in a given year, the Permittee shall hold, in the source's compliance account, TR NOx Annual allowances available for deduction for such control period under 40 CFR Section 97.424(a) in an amount not less than the tons of total NOx emissions for such control period from all TR NOx Annual units at the source. ii.) If total NOx emissions during a control period in a given year from the TR NOx Annual units at a TR NOx Annual source are in excess of the TR NOx Annual emissions limitation set forth in 40 CFR Section 97.406(c)(1)(i) above, then: A. The Permittee shall hold the TR NOx Annual allowances required for deduction under 40 CFR Section 97.424(d); and B. The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed, for the same violations, under the Clean Air Act, and each ton of such excess emissions and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart AAAAA and the Clean Air Act. [40 CFR 97.406(c)(1)]

5.14.47 TR NOx Annual assurance provisions: i.) If total NOx emissions during a control period in a given year from all TR NOx Annual units at TR NOx Annual sources in Minnesota (and Indian country within the borders of Minnesota) exceed the state assurance level, then the owners and operators of such sources and units in each group of one or more sources and units having a common designated representative for such control period, where the common designated representative's share of such NOx emissions during such control period exceeds the common designated representative's assurance level for the state and such control period, shall hold (in the assurance account established for the owners and operators of such group) TR NOx Annual allowances available for deduction for such control period under 40 CFR Section 97.425(a) in an amount equal to two times the product (rounded to the nearest whole number), as determined by the Administrator in accordance with 40 CFR Section 97.425(b), of multiplying- (A) The quotient of the amount by which the common designated representative's share of such NOx emissions exceeds the common designated representative's assurance level divided by the sum of the amounts, determined for all

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation common designated representatives for such sources and units in the Minnesota and Indian country within the borders of Minnesota for such control period, by which each common designated representative's share of such NOx emissions exceeds the respective common designated representative's assurance level; and (B) The amount by which total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within the borders of Minnesota for such control period exceed the state assurance level. ii.) The Permittee shall hold the TR NOx Annual allowances required under 40 CFR Section 97.406(c)(2)(i) above, as of midnight of November 1 (if it is a business day), or midnight of the first business day thereafter (if November 1 is not a business day), immediately after such control period. iii.) Total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within in the borders of Minnesota during a control period in a given year exceed the state assurance level if such total NOx emissions exceed the sum, for such control period, of the state NOx Annual trading budget under 40 CFR 97.410(a) and the state's variability limit under 40 CFR 97.410(b). iv.) It shall not be a violation of 40 CFR part 97, subpart AAAAA or of the Clean Air Act if total NOx emissions from all TR NOx Annual units at TR NOx Annual sources in Minnesota and Indian country within the borders of Minnesota during a control period exceed the state assurance level or if a common designated representative's share of total NOx emissions from the TR NOx Annual units at TR NOx Annual sources in the Minnesota and Indian country within the borders of Minnesota during a control period exceeds the common designated representative's assurance level. v.) To the extent the Permittee fails to hold TR NOx Annual allowances for a control period in a given year in accordance with 40 CFR Section 97.406(c)(2)(i) through (iii) above, A. The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed under the Clean Air Act; and B. Each TR NOx Annual allowance that the Permittee fails to hold for such control period in accordance with 40 CFR Section 97.406(c)(2)(i) through (iii) above and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart AAAAA and the Clean Air Act. [40 CFR 97.406(c)(2)(i)-(v)]

5.14.48 Compliance periods. i) A TR NOx Annual unit shall be subject to the requirements under 40 CFR 97.406(c)(1) above for the control period starting on the later of January 1, 2015, or the deadline for meeting the unit's monitor certification requirements under 40 CFR 97.430(b) and for each control period thereafter.

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation ii) A TR NOx Annual unit shall be subject to the requirements under 40 CFR 97.406(c)(2) above for the control period starting on the later of January 1, 2017 or the deadline for meeting the unit's monitor certification requirements under 40 CFR 97.430(b) and for each control period thereafter. [40 CFR 97.406(c)(3)]

5.14.49 Vintage of allowances held for compliance. i). A TR NOx Annual allowance held for compliance with the requirements under 40 CFR 97.406(c)(1)(i) above for a control period in a given year must be a TR NOx Annual allowance that was allocated for such control period or a control period in a prior year. ii). A TR NOx Annual allowance held for compliance with the requirements under 40 CFR 97.406(c)(1)(ii)(A) and (2)(i) through (iii) above for a control period in a given year must be a TR NOx Annual allowance that was allocated for a control period in a prior year or the control period in the given year or in the immediately following year. [40 CFR 97.406(c)(4)]

5.14.50 Allowance Management System requirements. Each TR NOx Annual allowance shall be held in, deducted from, or transferred into, out of, or between Allowance Management System accounts in accordance with 40 CFR part 97, subpart AAAAA. [40 CFR 97.406(c)(5)]

5.14.51 Limited authorization. A TR NOx Annual allowance is a limited authorization to emit one ton of NOx during the control period in one year. Such authorization is limited in its use and duration as follows: i) Such authorization shall only be used in accordance with the TR NOx Annual Trading Program; and ii) Notwithstanding any other provision of 40 CFR part 97, the Administrator has the authority to terminate or limit the use and duration of such authorization to the extent the Administrator determines is necessary or appropriate to implement any provision of the Clean Air Act. [40 CFR 97.406(c)(6)]

5.14.52 Property right. A TR NOx Annual allowance does not constitute a property right. [40 CFR 97.406(c)(7)]

5.14.53 Additional recordkeeping and reporting requirements. 1.) Unless otherwise provided, the Permittee shall keep on site at the source each of the following documents (in hardcopy or electronic format) for a period of 5 years from the date the document is created. This period may be extended for cause, at any time before the end of 5 years, in writing by the Administrator. i.) The certificate of representation under 40 CFR Section 97.416 for the designated representative for the source and each TR NOx Annual unit at the source and all documents that demonstrate the truth of the statements in the certificate of representation; provided that the certificate

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation and documents shall be retained on site at the source beyond such 5-year period until such certificate of representation and documents are superseded because of the submission of a new certificate of representation under 40 CFR 97.416 changing the designated representative. ii.) All emissions monitoring information, in accordance with 40 CFR part 97, subpart AAAAA. iii) Copies of all reports, compliance certifications, and other submissions and all records made or required under, or to demonstrate compliance with the requirements of, the TR NOx Annual Trading Program. 2.) The designated representative of a TR NOx Annual source and each TR NOx Annual unit at the source shall make all submissions required under the TR NOx Annual Trading Program, except as provided in 40 CFR Section 97.418. This requirement does not change, create an exemption from, or otherwise affect the responsible official submission requirements under a title V operating permit program in 40 CFR parts 70 and 71. [40 CFR 97.406(e)]

5.14.54 Liability. 1.) Any provision of the TR NOx Annual Trading Program that applies to a TR NOx Annual source or the designated representative of a TR NOx Annual source shall also apply to the Permittee. 2.) Any provision of the TR NOx Annual Trading Program that applies to a TR NOx Annual unit or the designated representative of a TR NOx Annual unit shall also apply to the Permittee. [40 CFR 97.406(f)]

5.14.55 Effect on other authorities. No provision of the TR NOx Annual Trading Program or exemption under 40 CFR Section 97.405 shall be construed as exempting or excluding the Permittee, and the designated representative, of a TR NOx Annual source or TR NOx Annual unit from compliance with any other provision of the applicable, approved state implementation plan, a federally enforceable permit, or the Clean Air Act. [40 CFR 97.405]

5.14.56 TR SO2 Group 2 Trading Program Requirements The Permittee shall comply with the TR SO2 Group 2 Trading Program Requirements contained in permit Appendix C. [40 CFR 97.730-735]

5.14.57 Designated representative requirements. The Permittee shall comply with the requirement to have a designated representative, and may have an alternate designated representative, in accordance with 40 CFR Section 97.713 through 97.718. [40 CFR 97.706(a)]

5.14.58 Emissions monitoring, reporting, and recordkeeping requirements. 1.) The Permittee, and the designated representative, of each TR SO2 Group 2 source and each TR SO2 Group 2 unit at

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation the source shall comply with the monitoring, reporting, and recordkeeping requirements of 40 CFR Section 97.730 (general requirements, including installation, certification, and data accounting, compliance deadlines, reporting data, prohibitions, and long-term cold storage), 40 CFR Section 97.731 (initial monitoring system certification and recertification procedures), 40 CFR Section 97.732 (monitoring system out-of-control periods), 40 CFR Section 97.733 (notifications concerning monitoring), 40 CFR Section 97.734 (recordkeeping and reporting, including monitoring plans, certification applications, quarterly reports, and compliance certification), and 40 CFR Section 97.735 (petitions for alternatives to monitoring, recordkeeping, or reporting requirements). 2.) The emissions data determined in accordance with 40 CFR Section 97.730 through 97.735 shall be used to calculate allocations of TR SO2 Group 2 allowances under 40 CFR 97.711(a)(2) and (b) and 40 CFR Section 97.712 and to determine compliance with the TR SO2 Group 2 emissions limitation and assurance provisions under 40 CFR Section 97.706(c) below, provided that, for each monitoring location from which mass emissions are reported, the mass emissions amount used in calculating such allocations and determining such compliance shall be the mass emissions amount for the monitoring location determined in accordance with 40 CFR Section 97.730 through 97.735 and rounded to the nearest ton, with any fraction of a ton less than 0.50 being deemed to be zero. [40 CFR 97.706(b)]

5.14.59 TR SO2 Group 2 emissions limitation. i.) As of the allowance transfer deadline for a control period in a given year, the Permittee shall hold, in the source's compliance account, TR SO2 Group 2 allowances available for deduction for such control period under 40 CFR Section 97.724(a) in an amount not less than the tons of total SO2 emissions for such control period from all TR SO2 Group 2 units at the source. ii.) If total SO2 emissions during a control period in a given year from the TR SO2 Group 2 units at a TR SO2 Group 2 source are in excess of the TR SO2 Group 2 emissions limitation set forth in paragraph 40 CFR Section 97.706(c)(1)(i) above, then: A.) The Permittee shall hold the TR SO2 Group 2 allowances required for deduction under 40 CFR Section 97.724(d); and B.) The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed, for the same violations, under the Clean Air Act, and each ton of such excess emissions and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart DDDDD and the Clean Air Act. [40 CFR 97.706(c)(1)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.14.60 TR SO2 Group 2 assurance provisions.

​i) If total SO2 emissions during a control period in a given year from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota exceed the state assurance level, then the owners and operators of such sources and units in each group of one or more sources and units having a common designated representative for such control period, where the common designated representative's share of such SO2 emissions during such control period exceeds the common designated representative's assurance level for the state and such control period, shall hold (in the assurance account established for the owners and operators of such group) TR SO2 Group 2 allowances available for deduction for such control period under 40 CFR Section 97.725(a) in an amount equal to two times the product (rounded to the nearest whole number), as determined by the Administrator in accordance with 40 CFR Section 97.725(b), of multiplying- A.) The quotient of the amount by which the common designated representative's share of such SO2 emissions exceeds the common designated representative's assurance level divided by the sum of the amounts, determined for all common designated representatives for such sources and units in Minnesota and Indian country within the borders of Minnesota for such control period, by which each common designated representative's share of such SO2 emissions exceeds the respective common designated representative's assurance level; and B.) The amount by which total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota for such control period exceed the state assurance level. ii) The Permittee shall hold the TR SO2 Group 2 allowances required under 40 CFR Section 97.706(c)(2)(i) above, as of midnight of November 1 (if it is a business day), or midnight of the first business day thereafter (if November 1 is not a business day), immediately after such control period. iii.) Total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota during a control period in a given year exceed the state assurance level if such total SO2 emissions exceed the sum, for such control period, of the state SO2 Group 2 trading budget under 40 CFR Section 97.710(a) and the state's variability limit under 40 CFR Section 97.710(b). iv.) It shall not be a violation of 40 CFR part 97, subpart DDDDD or of the Clean Air Act if total SO2 emissions from all TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation Minnesota during a control period exceed the state assurance level or if a common designated representative's share of total SO2 emissions from the TR SO2 Group 2 units at TR SO2 Group 2 sources in Minnesota and Indian country within the borders of Minnesota during a control period exceeds the common designated representative's assurance level. v.) To the extent the Permittee fails to hold TR SO2 Group 2 allowances for a control period in a given year in accordance with 40 CFR Section 97.706(c)(2)(i) through (iii) above, A.) The Permittee shall pay any fine, penalty, or assessment or comply with any other remedy imposed under the Clean Air Act; and B.) Each TR SO2 Group 2 allowance that the Permittee fails to hold for such control period in accordance with 40 CFR Section 97.706(c)(2)(i) through (iii) above and each day of such control period shall constitute a separate violation of 40 CFR part 97, subpart DDDDD and the Clean Air Act. [40 CFR 97.706(c)(2)(i)-(v)]

5.14.61 i.) A TR SO2 Group 2 unit shall be subject to the requirements under 40 CFR Section 97.706(c)(1) above for the control period starting on the later of January 1, 2015 or the deadline for meeting the unit's monitor certification requirements under 40 CFR Section 97.730(b) and for each control period thereafter. ii.) A TR SO2 Group 2 unit shall be subject to the requirements under 40 Section CFR 97.706(c)(2) above for the control period starting on the later of January 1, 2017 or the deadline for meeting the unit's monitor certification requirements under 40 CFR Section 97.730(b) and for each control period thereafter. [40 CFR 97.706(c)(3)]

5.14.62 Vintage of allowances held for compliance. i.) A TR SO2 Group 2 allowance held for compliance with the requirements under 40 CFR 97.706(c)(1)(i) above for a control period in a given year must be a TR SO2 Group 2 allowance that was allocated for such control period or a control period in a prior year. ii.) A TR SO2 Group 2 allowance held for compliance with the requirements under 40 CFR 97.706(c)(1)(ii)(A) and (2)(i) through (iii) above for a control period in a given year must be a TR SO2 Group 2 allowance that was allocated for a control period in a prior year or the control period in the given year or in the immediately following year. [40 CFR 97.706(c)(4)]

5.14.63 Allowance Management System requirements. Each TR SO2 Group 2 allowance shall be held in, deducted from, or transferred into, out of, or between Allowance Management System accounts in accordance with 40 CFR part 97, subpart DDDDD. [40 CFR 97.706(c)(5)]

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 5.14.64 Limited authorization. A TR SO2 Group 2 allowance is a

limited authorization to emit one ton of SO2 during the control period in one year. Such authorization is limited in its use and duration as follows: i.) Such authorization shall only be used in accordance with the TR SO2 Group 2 Trading Program; and ii) Notwithstanding any other provision of 40 CFR part 97, subpart DDDDD, the Administrator has the authority to terminate or limit the use and duration of such authorization to the extent the Administrator determines is necessary or appropriate to implement any provision of the Clean Air Act. [40 CFR 97.706(c)(6)]

5.14.65 Property right. A TR SO2 Group 2 allowance does not constitute a property right. [40 CFR pt. 97, 706(c)(7)]

5.14.66 Additional recordkeeping and reporting requirements. 1.) Unless otherwise provided, the Permittee shall keep on site at the source each of the following documents (in hardcopy or electronic format) for a period of 5 years from the date the document is created. This period may be extended for cause, at any time before the end of 5 years, in writing by the Administrator. i.) The certificate of representation under 40 CFR Section 97.716 for the designated representative for the source and each TR SO2 Group 2 unit at the source and all documents that demonstrate the truth of the statements in the certificate of representation; provided that the certificate and documents shall be retained on site at the source beyond such 5-year period until such certificate of representation and documents are superseded because of the submission of a new certificate of representation under 40 CFR Section 97.716 changing the designated representative. ii.) All emissions monitoring information, in accordance with 40 CFR part 97, subpart DDDDD. iii.) Copies of all reports, compliance certifications, and other submissions and all records made or required under, or to demonstrate compliance with the requirements of, the TR SO2 Group 2 Trading Program. 2.) The designated representative of a TR SO2 Group 2 source and each TR SO2 Group 2 unit at the source shall make all submissions required under the TR SO2 Group 2 Trading Program, except as provided in 40 CFR Section 97.718. This requirement does not change, create an exemption from, or otherwise affect the responsible official submission requirements under a title V operating permit program in parts 70 and 71. [40 CFR 97.706(e)]

5.14.67 Liability. 1.) Any provision of the TR SO2 Group 2 Trading Program that applies to a TR SO2 Group 2 source or the designated representative of a TR SO2 Group 2 source shall also apply to

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation the Permittee. 2.) Any provision of the TR SO2 Group 2 Trading Program that applies to a TR SO2 Group 2 unit or the designated representative of a TR SO2 Group 2 unit shall also apply to the Permittee. [40 CFR 97.706(f)]

5.14.68 Effect on other authorities. No provision of the TR SO2 Group 2 Trading Program or exemption under 40 CFR Section 97.705 shall be construed as exempting or excluding the Permittee, and the designated representative, of a TR SO2 Group 2 source or TR SO2 Group 2 unit from compliance with any other provision of the applicable, approved state implementation plan, a federally enforceable permit, or the Clean Air Act. [40 CFR 97.706(g)]

TREA 37 CE032 Unit 5/2

Selective Catalytic Reduction

5.15.1 Operate and maintain TREA37 at all times that EQUI1 and EQUI62 are in operation except during times of start-up, shutdown, or malfunction (as defined in EQUI1 and EQUI62). At all times, the Permittee shall maintain documentation of the operation of TREA37, and have it available for review at the stationary source. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

5.15.2 The Permittee shall operate and maintain the SCR in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7017.0200, Minn. R. 7007.0800, subp. 14, ]

5.15.3 SCR Monitoring: The total NOx as NO2 CEMS (EQUI44) shall be used to assess proper operation of the SCR. [40 CFR 64.7(a), Minn. R. 7007.0800, subp. 2, Minn. R. 7017.0200]

5.15.4 Nitrogen Oxides <= 4.5 parts per million on an instantaneous basis. NOx emissions in excess of this threshold shall be considered an excursion under 40 CFR Section 64.6(c)(2), for purposes of the NOx limits under EQUI1, EQUI62, and STRU32. This applies for all types and qualities of fuel burned. [40 CFR 64.3, Minn. R. 7017.0200]

5.15.5 Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording ammonia injection rate as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the SCR is in operation. [Minn. R. 7007.0800, subp. 4, Minn. R. 7017.0200, ]

5.15.6 Continuous Monitoring: The Permittee shall monitor

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation continuously, or at a minimum once every 15 minutes, monitor the total NOx as NO2 emissions in the exhaust. See Subject Item COMG3 for additional CEMs operating requirements. [40 CFR 64.3(b)(4)(ii), Minn. R. 7017.0200]

5.15.7 Periodic Inspections: At least semiannually, or more frequently as required by the manufacturer's specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [40 CFR 64.3, Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subps. 4-5, Minn. R. 7017.0200]

5.15.8 Corrective Actions: The Permittee shall take corrective action as soon as possible if any of the following occur: - The alarm is triggered for instantaneous NOx emissions of 4.5 ppm, outside of startup or shutdown; or - The SCR or any of its components are found during the inspections to need repair. Corrective actions shall return NOx emissions to within the permitted range, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O&M Plan for the SCR. The Permittee shall keep a record of the type and date of any corrective action taken for the SCR. [40 CFR 64.7(d)(1), Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subps. 4-5, Minn. R. 7017.0200]

5.15.9 Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring 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 existing ammonia injection rate, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring changes. [Minn. R. 7017.0200, ]

5.15.10 As required by 40 CFR Section 64.9(a)(2), for the Semi-Annual Deviations Report requirements listed in Section 6 of this permit and/or the Notification of Deviations Endangering Human Health and the Environment listed earlier in Section 5 of this permit, as applicable, the Permittee shall include the following related to the monitoring identified as required by 40 CFR pt. 64: 1) Summary information on the number, duration, and cause of excursions or exceedances, as applicable, and the corrective action taken; and

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Subject Item Sec. SI.Regt SI des:SI desc Requirement & Citation 2) Summary information on the number, duration, and cause for monitor downtime incidents. [40 CFR 64.9(a)(2), Minn. R. 7017.0200]

5.15.11 The Permittee shall maintain records of monitoring data, monitor performance data, corrective actions taken, and other supporting information required to be maintained. The Permittee may maintain records on alternative media, such as microfilm, computer files, magnetic tape disks, or microfiche, provided that the use of such alternative media allows for expeditious inspection and review, and does not conflict with other applicable recordkeeping requirements. [40 CFR 64.9(b), Minn. R. 7017.0200]

6. Submittal/action requirements

This section lists most of the submittals required by this permit. Please note that some submittal requirements may appear in the Limits and Other Requirements section, or, if applicable, within a Compliance Schedule section.

Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation TFAC 2 03700003 Xcel Energy -

Black Dog

6.1.1 The Permittee shall submit an application for permit reissuance : Due 180 calendar days before Permit Expiration Date. [Minn. R. 7007.0400, subp. 2]

6.1.2 The Permittee shall submit a semiannual deviations report : Due semiannually, by the 30th of January and July The first semiannual report submitted by the Permittee shall cover the calendar half-year in which the permit is issued. The first report of each calendar year covers January 1 - June 30. The second report of each calendar year covers July 1 - December 31. If no deviations have occurred, the Permittee shall submit the report stating no deviations. [Minn. R. 7007.0800, subp. 6(A)(2)]

6.1.3 The Permittee shall submit a compliance certification : Due annually, by the 31st of January (for the previous calendar year). The Permittee shall submit this to the Commissioner on a form approved by the Commissioner. This report covers all deviations experienced during the calendar year. [Minn. R. 7007.0800, subp. 6(C)]

6.1.4 The Permittee shall submit excess emission/downtime report : Due by 30 days after the end of each calendar quarter following permit issuance. Submit Deviations Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor bypass and all periods of exceedances of the limit including exceedances allowed by an applicable standard, i.e. during

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Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation startup, shutdown, and malfunctions. The EER must be submitted even if there were no excess emissions, downtime or bypasses during the quarter. [40 CFR 60.7(c), Minn. R. 7017.1110, subp. 1-2]

COMG 3 GP005 Unit 5/2 CEMS

Required by Acid Rain and NSPS Regulations

6.2.1 40 CFR pt. 60 Cylinder Gas Audit (CGA): The Permittee shall conduct a cylinder gas audit : Due by the end of each three of four calendar quarters but no more than three quarters in succession. A CGA is not required during any calendar quarter in which a RATA was performed. [40 CFR pt. 60, Appendix F, 5.1.2, Minn. R. 7017.1170, subp. 4]

6.2.2 40 CFR pt. 75 Linearity and Leak Check Test: The Permittee shall conduct linearity and leak check : Due by the end of each QA operating quarter (calendar quarter in which there are at least 168 unit operating hours) in accordance with procedures in 40 CFR pt. 75, Appendix B, Sections 2.2.1 and 2.2.2, and Appendix A, Section 6.2. Perform a leak check at least once during each QA operating quarter. [40 CFR pt. 75, Appendix B, 2.2]

6.2.3 40 CFR pt. 75 CEMS Relative Accuracy Test Audit (RATA): The Permittee shall conduct CEMS relative accuracy test audit (RATA) : Due semiannually. In accordance with 40 CFR pt. 75, Appendix B, this means once every two successive QA operating quarters (calendar quarter in which there are at least 168 unit operating hours) on all CEMS required by the Acid Rain Program. Relative accuracy test audits may be performed annually (i.e., once every four successive QA operating quarters, rather than once every two successive QA operating quarters) if any of the conditions listed in 40 CFR pt. 75, Appendix B, Sections 2.3.1.2(a) through 2.3.1.2(i) are met. [40 CFR pt. 75, Appendix B, 2.3]

6.2.4 40 CFR pt. 60 CEMS Relative Accuracy Test Audit (RATA): The Permittee shall conduct a relative accuracy test audit : Due one of each four calendar quarters. [40 CFR pt. 60, Appendix F, 5.1.1]

COMG 8 GP007 Combustion

Turbine/Duct Burner Combined Requirements

6.3.1 PM < 10 micron : The Permittee shall conduct a performance test : Due before 07/02/2017 every 60 months thereafter to measure PM10 emissions. The first test is due by the date specified and all subsequent tests are due by the end of each 60-month period following that date. The performance test shall

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Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation be conducted at worst case conditions as defined at Minn. R. 7017.2025, subp. 2, using EPA Reference Method 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to the performance test due date satisfies the performance test due date, and will not reset the test due date for future testing as required: 1) by this permit; 2) by the most recently approved Performance Test Frequency Plan; or 3) within a Notice of Compliance letter. Testing conducted more than two months prior to the performance test due date satisfies this test due date requirement and will reset the performance test due date. [Minn. R. 7017.2020, subp. 1, Title I Condition: 40 CFR 52.21(j)(BACT) & Minn. R. 7007.3000]

6.3.2 Volatile Organic Compounds : The Permittee shall conduct a performance test : Due before 07/02/2017 every 60 months thereafter to measure VOC emissions. The first test is due by the date specified and all subsequent tests are due by the end of each 60-month period following that date. The performance test shall be conducted at worst case conditions as defined at Minn. R. 7017.2025, subp. 2, using EPA Reference Method 25A, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to the performance test due date satisfies the performance test due date, and will not reset the test due date for future testing as required: 1) by this permit; 2) by the most recently approved Performance Test Frequency Plan; or 3) within a Notice of Compliance letter. Testing conducted more than two months prior to the performance test due date satisfies this test due date requirement and will reset the performance test due date. [Minn. R. 7017.2020, subp. 1, Title I Condition: 40 CFR pt. 52, 21(j)(BACT) & Minn. R. 7007.3000]

COMG 11 Unit 6 CEMS

Required by Acid Rain and NSPS Regulations

6.4.1 Minn. R. Installation Notification: The Permittee shall notify MPCA : Due 60 calendar days before Installation Date of the continuous emissions monitoring system. The notification shall include plans and drawings of the CEMS. [Minn. R. 7017.1040, subp. 1]

6.4.2 The Permittee shall submit start-up notification : Due 10 working days after Startup of Monitor Date. [Minn. R.

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Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation 7007.0800, subp. 2]

6.4.3 40 CFR pt. 60 Performance Demonstration Notification: The Permittee shall notify MPCA : Due 30 calendar days before Demonstration Commencement Date. The Permittee shall notify MPCA of the date upon which demonstration of the continuous monitoring system performance commences in accordance with 40 CFR Section 60.13(c). [40 CFR 60.7(a)(5), Minn. R. 7019.0100, subp. 1]

6.4.4 40 CFR pt. 60 CGA: The Permittee shall conduct CEMS cylinder gas audit (CGA) : Due after CEMS Certification Test Date quarterly but no more than three quarters in succession. A CGA is not required during any calendar quarter in which a RATA was performed. [40 CFR pt. 60, Appendix F, 5.1.3, Minn. R. 7017.1010, subp. 1(C)]

6.4.5 40 CFR pt. 60 RATA: The Permittee shall conduct CEMS relative accuracy test audit (RATA) : Due after CEMS Certification Test Date annually meaning by the end of every one of four calendar quarters. [40 CFR pt. 60, Appendix F(sec. 5.1.1), Minn. R. 7017.1010, subp. 1(C)]

6.4.6 40 CFR pt. 75 Linearity and Leak Test Check: The Permittee shall conduct linearity and leak check : Due after Startup of Monitor Date quarterly in accordance with procedures in 40 CFR pt. 75, Appendix B, Sections 2.2.1 and 2.2.2, and Appendix A, Section 6.2. This means once every calendar quarter in which there are at least 168 unit operating hours. Perform a leak check at least once during each QA operating quarter. [40 CFR pt. 75, Appendix B, 2.2]

6.4.7 40 CFR pt. 75 CEMS Relative Accuracy Test Audit (RATA): The Permittee shall conduct CEMS relative accuracy test audit (RATA) : Due semiannually. In accordance with 40 CFR pt. 75, Appendix B, this means once every two successive QA operating quarters (calendar quarter in which there are at least 168 unit operating hours) on all CEMS required by the Acid Rain Program. Relative accuracy test audits may be performed annually (i.e., once every four successive QA operating quarters, rather than once every two successive QA operating quarters) if any of the conditions listed in 40 CFR pt. 75, Appendix B, Sections 2.3.1.2(a) through 2.3.1.2(i) are met. [40 CFR pt. 75, Appendix B, 2.3]

EQUI 46 MR019 Unit 5/2 CO Dual

Range Monitor

6.5.1 Cylinder Gas Audit (CGA): The Permittee shall conduct a cylinder gas audit : Due by the end of each calendar half-year. A CGA is not required during any calendar half year in which a RATA was performed. The initial CGA must be performed within 180 days following certification of the CEMS. The CGAs shall be conducted at least three months apart but no more than eight

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Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation months apart. A CGA shall be conducted according to the procedures in 40 CFR pt. 60, Appendix F, Section 5.1.2. If the monitored emission unit was operated for less than 24 hours during the calendar half year, a CGA is not required for that calendar half year. [Minn. R. 7017.1170, subp. 4]

6.5.2 CEMS Relative Accuracy Test Audit (RATA): The Permittee shall conduct CEMS relative accuracy test audit (RATA) : Due annually before the end of each calendar year. A RATA is not required in any calendar year if a RATA conducted in the previous year demonstrated a relative accuracy value of less than 15 percent or if the associated emissions unit operated less than 48 hours during the calendar year. If the exception is used, the next RATA shall be conducted during the first half of the following calendar year. RATAs shall be conducted at least 3 months apart and according to 40 CFR pt. 60, Appendix F, Section 5.1.1. [40 CFR pt. 75, Appendix B, 2.3]

EQUI 91 EU029 Auxiliary Boiler 6.6.1 Compliance Report: The Permittee shall submit a compliance

status report : Due annually, by the 31st of January. The first compliance report must cover the period beginning on the startup date of the boiler (12/5/2015) and ending on December 31, 2016. The first annual compliance report must be postmarked or submitted no later than January 31, 2017. Each subsequent compliance report must cover the applicable 1-year period from January 1 to December 31 and postmarked or submitted no later than January 31. [40 CFR 63.7495(a), 40 CFR 63.7550(a)-(b), 40 CFR pt. 63, subp. DDDDD(Table 9)]

EQUI 92 EU030 Unit 6 Simple

Cycle Combustion Turbine

6.7.1 Nitrogen Oxides The Permittee shall conduct initial performance test : Due 180 calendar days after Initial Startup Date. The performance test shall be conducted as specified in 40 CFR Section 60.4400(a)(1)(i) or (ii), or as an alternative, the initial performance test may be performed using NOx-diluent CEMS as described in 40 CFR Section 60.4405. [40 CFR 60.4400(a)(1), 40 CFR 60.4400(b)(5), 40 CFR 60.4405, 40 CFR 60.8, Minn. R. 7017.2015, subp. 2(A)]

6.7.2 Sulfur Dioxide The Permittee shall conduct initial performance test : Due 180 calendar days after Initial Startup Date. The Permittee must conduct an initial performance test, as required in 40 CFR Section 60.8 (except as specified in 40 CFR Section 60.8(a)(1), (a)(2), (a)(3), and (a)(4)) for sulfur dioxide. Subsequent SO2 performance tests shall be conducted on an

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Subject Item Sec.SI.Reqt SI des:SI desc Requirement & Citation annual basis (no more than 14 calendar months following the previous performance test). The Permittee must use one of following three methodologies to conduct the performance tests: (1) If the Permittee chooses to periodically determine the sulfur content of the fuel combusted in the turbine, a representative fuel sample must be collected following ASTM D5287 (incorporated by reference, see 40 CFR Section 60.17) for natural gas. The fuel analyses may be performed either by the Permittee, a service contractor retained by the Permittee, the fuel vendor, or any other qualified agency. Analyze the samples for the total sulfur content of the fuel using ASTM D1072, or alternatively D3246, D4084, D4468, D4810, D6228, D6667, or Gas Processors Association Standard 2377 (all of which are incorporated by reference, see 40 CFR Section 60.17). (2) The Permittee may measure the SO2 concentration (in parts per million (ppm)), using EPA Methods 6, 6C, 8, or 20 in 40 CFR pt. 60, Appendix A. In addition, the American Society of Mechanical Engineers (ASME) standard, ASME PTC 19-10-1981-Part 10, "Flue and Exhaust Gas Analyses," manual methods for sulfur dioxide (incorporated by reference) can be used instead of EPA Methods 6 or 20. For units complying with the output based standard, concurrently measure the stack gas flow rate, using EPA Methods 1 and 2 in 40 CFR pt. 60, Appendix A, and measure and record the electrical and thermal output from the unit. Then use Equation 6 at 40 CFR Section 60.4415(a)(2) to calculate the SO2 emission rate. (3) The Permittee may measure the SO2 and diluent gas concentrations, using either EPA Methods 6, 6C, or 8 and 3A, or 20 in 40 CFR pt. 60, Appendix A. In addition, you may use the manual methods for sulfur dioxide ASME PTC 19-10-1981-Part 10 (incorporated by reference, see 40 CFR Section 60.17). Concurrently measure the heat input to the unit, using a fuel flowmeter (or flowmeters), and measure the electrical and thermal output of the unit. Use EPA Method 19 in 40 CFR pt. 60, Appendix A to calculate the SO2 emission rate in lb/MMBtu. Then, use Equations 1 and, if necessary, 2 and 3 in 40 CFR Section 60.4350(f) to calculate the SO2 emission rate in lb/MWh. [40 CFR 60.4415(a), 40 CFR 60.8, Minn. R. 7017.2015, subp. 2(A)]

6.7.3 The Permittee shall submit a notification of date construction began : Due 30 calendar days after Date of Construction Start. Submit the name and number of the Subject Item and the date construction began. [40 CFR 60.7(a)(1), Minn. R. 7019.0100, subp. 1]

6.7.4 The Permittee shall submit a notification of the actual date of initial startup : Due 15 calendar days after Initial Startup Date. [40 CFR 60.7(a)(3), Minn. R. 7019.0100, subp. 1]

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7. Appendices

Appendix A. Insignificant Activities and General Applicable Requirements The table below lists the insignificant activities that are currently at the Facility and their associated general applicable requirements.

Minn. R. Rule description of the activity General applicable requirement Minn. R. 7007.1300, subp. 3(A) Fuel Use: space heaters fueled by

kerosene, natural gas, or propane, less than 420,000 Btu/hr

PM <= 0.6 or 0.4 lb/MMBtu, depending on year constructed Opacity <= 20% with exceptions (Minn. R. 7011.0510/0515)

Minn. R. 7007.1300, subp. 3(G) Emissions from a laboratory, as defined in Minn. R. 7007.1300, subp. 3(G)

PM, variable depending on airflow Opacity <= 20% (Minn. R. 7011.0710)

Minn. R. 7007.1300, subp. 3(H)(3) Brazing, soldering or welding equipment PM, variable depending on airflow Opacity <= 20% (M inn. R. 7011.0710/0715)

Minn. R. 7007.1300, subp. 3(K) Infrequent use of spray paint equipment for routine housekeeping or plant upkeep activities not associated with primary production processes at the stationary source

PM, variable depending on airflow Opacity <= 20% (Minn. R. 7011.0710/0715)

Minn. R. 7007.1300, subp. 4 Individual units with potential or actual emissions meeting the criteria in Minn. R. 7007.1300, subp. 4(A)-(D) -Black dog has permanent heating equipment that fits under this rule.

PM, variable depending on airflow Opacity <= 20% (Minn. R. 7011.0710/0715)

Minn. R. 7008.4110 Equipment venting PM/PM10 inside a building, provided that emissions from the equipment are: a). filtered through an air cleaning system; and b). vented inside of the building 100% of the time -Black Dog has sandblasting and metal machining equipment.

PM, variable depending on airflow Opacity <= 20% (Minn. R. 7011.0710/0715)

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Appendix B. Parameters used for SIL analysis Annual NOx Stack Parameters Stack ID DELTA

ID Description Elevation

(m) UTM Coordinates Emission Rate Stack

Height (m)

Exit Temp.

(K)

Exit Velocity (m/s)

Exit Diameter

(m)

Flow Rate (ACFM) X (m) Y (m) lb/hr g/sec

STRU35 EQUI92 Unit 6, GE 219.456 480,263 4,961,912 84 10.584 60.96 828.7 21.91448 7.0104 1,792,309.441

24-hour and Annual PM10 Stack Parameters

Stack ID

DELTA ID Description Elevation (m)

UTM Coordinates Emission Rate Stack Height

(m)

Exit Temp.

(K)

Exit Velocity (m/s)

Exit Diameter

(m)

Flow Rate (ACFM) X (m) g/sec lb/hr g/sec

STRU35 EQUI92 Unit 6, GE 219.456 480,263 4,961,912 7.10 0.895 60.96 828.7 21.91448 7.0104 1,792,309.441

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Appendix C. Transport Rule (TR) Trading Program Title V Requirements

Description of TR Monitoring Provisions The TR subject units, and the unit-specific monitoring provisions at this source, are identified in the following tables. These units are subject to the requirements for the TR NOx Annual Trading Program and TR SO2 Group 2 Trading Program. Unit ID: EQUI1 (Combustion Turbine Unit 5/2)

Parameter Continuous emission monitoring system or systems (CEMS) requirements pursuant to 40 CFR part 75, subpart B (for SO2 monitoring) and 40 CFR part 75, subpart H (for NOX monitoring)

Excepted monitoring system requirements for gas- and oil-fired units pursuant to 40 CFR part 75, appendix D

Excepted monitoring system requirements for gas- and oil-fired peaking units pursuant to 40 CFR part 75, appendix E

Low Mass Emissions excepted monitoring (LME) requirements for gas- and oil-fired units pursuant to 40 CFR 75.19

EPA-approved alternative monitoring system requirements pursuant to 40 CFR part 75, subpart E

SO2 X ----------------

NOX X -------------

Heat input X ----------------

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Unit ID: EQUI92 (Combustion Turbine Unit 6)

Parameter Continuous emission monitoring system or systems (CEMS) requirements pursuant to 40 CFR part 75, subpart B (for SO2 monitoring) and 40 CFR part 75, subpart H (for NOX monitoring)

Excepted monitoring system requirements for gas- and oil-fired units pursuant to 40 CFR part 75, appendix D

Excepted monitoring system requirements for gas- and oil-fired peaking units pursuant to 40 CFR part 75, appendix E

Low Mass Emissions excepted monitoring (LME) requirements for gas- and oil-fired units pursuant to 40 CFR 75.19

EPA-approved alternative monitoring system requirements pursuant to 40 CFR part 75, subpart E

SO2 X ----------------

NOX X -------------

Heat input X ----------------

1. The above description of the monitoring used by a unit does not change, create an exemption from, or otherwise affect the monitoring, recordkeeping, and reporting requirements applicable to the unit under 40 CFR 97.430 through 97.435 (TR NOX Annual Trading Program) and 40 CFR 97.730 through 97.735 (TR SO2 Group 2 Trading Program). The monitoring, recordkeeping and reporting requirements applicable to each unit are included below in the standard conditions for the applicable TR trading programs. 2. Owners and operators must submit to the Administrator a monitoring plan for each unit in accordance with 40 CFR 75.53, 75.62 and 75.73, as applicable. The monitoring plan for each unit is available at the EPA’s website at http://www.epa.gov/airmarkets/emissions/monitoringplans.html.

3. Owners and operators that want to use an alternative monitoring system must submit to the Administrator a petition requesting approval of the alternative monitoring system in accordance with 40 CFR part 75, subpart E and 40 CFR 75.66 and 97.435 (TR NOX Annual Trading Program) and 40 CFR 97.735 (TR SO2 Group 2 Trading Program). The Administrator’s response approving or disapproving any petition for an alternative monitoring system is available on the EPA’s website at http://www.epa.gov/airmarkets/emissions/petitions.html. 4. Owners and operators that want to use an alternative to any monitoring, recordkeeping, or reporting requirement under 40 CFR 97.430 through 97.434 (TR NOX Annual Trading Program and 97.730 through 97.734 (TR SO2 Group 2 Trading Program) must submit to the Administrator a petition requesting approval of the alternative in accordance with 40 CFR 75.66 and 40 CFR 97.435 (TR NOX Annual Trading Program) and 40 CFR 97.735 (TR SO2 Group 2 Trading Program). The Administrator’s response approving or disapproving any petition

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for an alternative to a monitoring, recordkeeping, or reporting requirement is available on EPA’s website at http://www.epa.gov/airmarkets/emissions/petitions.html. 5. The descriptions of monitoring applicable to the unit included above meet the requirement of 40 CFR 97.430 through 97.434 (TR NOX Annual Trading Program and 40 CFR 97.730 through 97.734 (TR SO2 Group 2 Trading Program), and therefore minor permit modification procedures, in accordance with 40 CFR 70.7(e)(2)(i)(B) or 71.7(e)(1)(i)(B), may be used to add to or change this unit’s monitoring system description.

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Appendix D. Acid Rain Applications and Retired Unit Exemptions

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EPA Form 7610-16 (Revised 7-2014)

&EPA United States Environmental Protection Agency Acid Rain Program

OMB No. 2060-0258

Approval expires 11/30/2012

Acid Rain Permit Application

For more information, see instructions and 40 CFR 72.30 and 72.31.

STEP 1

This submission is: X New D Revised D for ARP permit renewal

Identify the facility name, State, and plant (ORIS) code.

STEP 2 Enter the unit ID# for every affected unit at the affected source in column "a."

Black Dog MN 1904 Facility (Source) Name State Plant Code

a b

Unit ID# Unit Will Hold Allowances in Accordance with 40 CFR 72.9(c)(1)

6 Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

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EPA Form 7610-16 (Revised 7-2014)

Black Dog

I Facility (Source) Name (from STEP 1)

Page 2

STEP 3

Read the standard requirements.

Permit Requirements

The designated representative of each affected source and each affected unit at the source shall:

(i) Submit a complete Acid Rain permit application (including a compliance plan) under 40 CFR part 72 in accordance with the deadlines specified in 40 CFR 72.30; and (ii) Submit in a timely manner any supplemental information that the permitting authority determines is necessary in order to review an Acid Rain permit application and issue or deny an Acid Rain permit;

(2) The owners and operators of each affected source and each affected unit at the source shall:

(i) Operate the unit in compliance with a complete Acid Rain permit application or a superseding Acid Rain permit issued by the permitting authority; and (ii) Have an Acid Rain Permit.

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 monitoring requirements as provided in 40 CFR part 75. (2) The emissions measurements recorded and reported in accordance with 40 CFR part 75 shall be used to determine compliance by the source or unit, as appropriate, with the Acid Rain emissions limitations and emissions reduction requirements for sulfur dioxide and nitrogen oxides under the Acid Rain Program. (3) The requirements of 40 CFR part 75 shall not affect the responsibility of the owners 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 operating permit for the source.

Sulfur Dioxide Requirements

(1) The owners and operators of each source and each affected unit at the source shall:

(i) Hold allowances, as of the allowance transfer deadline, in the source'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 source; and (ii) Comply with the applicable Acid Rain emissions limitations for sulfur dioxide.

(2) Each ton of sulfur dioxide emitted in excess of the Acid Rain emissions limitations for sulfur dioxide shall constitute a separate violation of the Act. (3) An affected unit shall be subject to the requirements under paragraph (1) of the sulfur dioxide requirements as follows:

(i) Starting January 1, 2000, an affected unit under 40 CFR 72.6(a)(2); or (ii) Starting on the later of January 1, 2000 or the deadline for monitor certification under 40 CFR part .75, an affected unit under 40 CFR 72.6(a)(3).

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EPA Form 7610-16 (Revised 7-2014)

Black Dog

Facility (Source) Name (from STEP 1J

Page 3

Sulfur Dioxide Requirements. Cont'd.

STEP 3, Cont'd. (4) Allowances shall be held in, deducted from, or transferred among Allowance Tracking System accounts in accordance with the Acid Rain Program. (5) An allowance shall not be deducted in order to comply with the requirements under paragraph (1) of the sulfur dioxide requirements prior to the calendar year for which the allowance was allocated. (6) An allowance allocated by the Administrator under 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 permit application, the Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8 and no provision of law shall be construed to limit the authority of the United States to terminate or limit such authorization. (7) An allowance allocated by the Administrator under the Acid Rain Program does not constitute a property right.

Nitrogen Oxides Requirements

The owners and operators of the source and each affected unit at the source shall comply with the applicable Acid Rain emissions limitation for nitrogen oxides.

Excess Emissions Requirements

(1) The designated representative of an affected source that has excess emissions in any calendar year shall submit a proposed offset plan, as required under 40 CFR part 77. (2) The owners and operators of an affected source that has excess emissions in any calendar year shall:

(i) Pay without demand the penalty required, and pay upon demand the interest on that penalty, as required by 40 CFR part 77; and (ii) Comply with the terms of an approved offset plan, as required by 40 CFR part 77.

Recordkeep1ng 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 document is created. This period may be extended for cause, at any time prior to the end of 5 years, in writing by the Administrator or permitting authority:

(i) 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 until such documents are superseded because of the submission

I

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EPA Form 7610-16 (Revised 7-2014)

Page 4 Black Dog

I Facility [Source) Name (from STEP 1) of a new certificate of representation

representative; changing the designated

STEP 3, Cont'd. Recordkeeping and Reporting Requirements, Cont'd.

(ii) All emissions monitoring information, in accordance with 40 CFR part 75, provided that to the extent that 40 CFR part 75 provides for a 3-year period for recordkeeping, the 3-year period shall apply. (iii) Copies of all reports, compliance certifications, and other submissions and all records made or required under the Acid Rain Program; and, (iv) Copies of all documents used to complete an Acid Rain permit application and any other submission under the Acid Rain Program or to demonstrate compliance with the requirements of the Acid Rain Program.

(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 40 CFR part 72 subpart I and 40 CFR part 75.

Liability

(1) Any person who knowingly violates any requirement or prohibition of the Acid Rain Program, a complete Acid Rain permit application, an Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8, including any requirement for the payment of any penalty owed to the United States, shall be subject to enforcement pursuant to section 113(c) of the Act. (2) Any person who knowingly makes a false, material statement in any record, submission, or report under the Acid Rain Program shall be subject to criminal enforcement pursuant to section 113(c) of the Act and 18 U.S.C. 1001. (3) No permit revision shall excuse any violation of the requirements of the Acid Rain Program that occurs prior to the date that the revision takes effect. (4) Each affected source and each affected unit shall meet the requirements of the Acid Rain Program. (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. (6) Any provision of the Acid Rain Program that applies to an affected unit (including a provision applicable to the designated representative of an affected unit) shall also apply to the owners and operators of such unit. (7) Each violation of a provision of 40 CFR parts 72, 73, 74, 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 of the Act.

Effect on Other Authorities

No provision of the Acid Rain Program, an Acid Rain permit application, an Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8 shall be construed as: (1) Except as expressly provided in title IV of the Act, 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

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Page 5 Black Dog

I Facility (Source) Name (from STEP 1)

any other provision of the Act, including the provisions of title I of the Act relating

STEP 3, Cont'd.

STEP 4 Read the certification statement, sign, and date.

Effect on Other Authorities, Cont'd.

to applicable National Ambient Air Quality Standards or State Implementation Plans; (2) Limiting the number of allowances a source can hold; provided, that the number of allowances held by the source shall not affect the source's obligation to comply with any other provisions of the Act; (3) Requiring a change of any kind in any State law regulating electric utility rates and charges, affecting any State law regarding such State regulation, or limiting such State regulation, including any prudence review requirements under such State law; (4) Modifying the Federal Power Act or affecting the authority of the Federal Energy Regulatory Commission under the Federal Power Act; or, (5) Interfering with or impairing any program for competitive bidding for power supply in a State in which such program is established.

Certification

I am authorized to make this submission on behalf of the owners and operators of the affected source or affected units for which the submission is made. 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 statements and information are to the best of 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, including the possibility of fine or imprisonment.

EPA Form 7610-16 (Revised 7-2014)

Name

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EPA Form 7610-16 (Revised 12-2009)

United States Environmental Protection Agency Acid Rain Program

OMB No. 2060-0258

Approval expires 11/30/2012

Acid Rain Permit Application

For more Information, see Instructions and 40 CFR 72.30 and 72.31.

This submission ls: new revised X for Acid Rain permit renewal

STEP 1

Identify the facility name, State, and plant (ORIS) code.

STEP 2

Enter the unit ID# for every affected unit at the affected source in column "a."

Facility(Source) Name Black Dog State MN Plant Code 1904

a b

Unit ID# Unit Will Hold Allowances in Accordance with 40 CFR 72.9(c)(1)

3 XXYes

4 XXYes

5 XXYes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

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EPA Form 7610-16 (Revised 12-2009)

Acid Rain - Page 2

STEP 3

Read the standard requirements.

Permit Requirements

(1) The. designated representative of each affected source and each affected unit at the source shall:

(i) Submit a complete Acid Rain permit application (including a compliance plan) under 40 CFR part 72 in accordance with the deadlines specified in 40 CFR 72.30; and (ii) Submit in a timely manner any supplemental information that the permitting authority determines is necessary in order to review an Acid Rain permit application and issue or deny an Acid Rain permit;

(2) The owners and operators of each affected source and each affected unit at the source shall:

(i) Operate the unit in compliance with a complete Acid Rain permit application or a superseding Acid Rain permit issued by the permitting authority; and (ii) Have an Acid Rain Permit.

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 monitoring requirements as provided in 40 CFR part 75. (2) The emissions measurements recorded and reported in accordance with 40 CFR part 75 shall be used to determine compliance by the source or unit, as appropriate, with the Acid Rain emissions limitations and emissions reduction requirements for sulfur dioxide and nitrogen oxides under the Acid Rain Program. (3). The requirements of 40 CFR part 75 shall not affect the responsibility of the owners 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 operating permit for the source.

Sulfur Dioxide Requirements

(1) The owners and operators of each source and each affected unit at the source shall:

(i) Hold allowances, as of the allowance transfer deadline, in the source'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 source; and (ii) Comply with the applicable Acid Rain emissions limitations for sulfur dioxide.

(2) Each ton of sulfur dioxide emitted in excess of the Acid Rain emissions limitations for sulfur dioxide shall constitute a separate violation of the Act. (3) An affected unit shall be subject to the requirements under paragraph (1) of the sulfur dioxide requirements as follows:

(i) Starting January 1, 2000, an affected unit under 40 CFR 72.6(a)(2); or (ii) Starting on the later of January 1, 2000 or the deadline for monitor certification under 40 CFR part 75, an affected unit under 40 CFR 72.6(a)(3).

Facility (Source) Name (from STEP 1) Black Dog

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Acid Rain - Page 3

Sulfur Dioxide Requirements, Cont'd.

STEP 3, Cont'd. (4) Allowances shall be held in, deducted from, or transferred among Allowance Tracking System accounts in accordance with the Acid Rain Program. (5) An allowance shall not be deducted in order to comply with the requirements under paragraph (1) of the sulfur dioxide requirements prior to the calendar year for which the allowance was allocated. (6) An allowance allocated by the Administrator under 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 permit application, the Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8 and no provision of law shall be construed to limit the authority of the United States to terminate or limit such authorization. (7) An allowance allocated by the Administrator under the Acid Rain Program does not constitute a property right.

Nitrogen Oxides Requirements

The owners and operators of the source and each affected unit at the source shall comply with the applicable Acid Rain emissions limitation for nitrogen oxides.

Excess Emissions Requirements

(1) The designated representative of an affected source that has excess emissions in any calendar year shall submit a proposed offset plan, as required under 40 CFR part 77. (2) The owners and operators of an affected source that has excess emissions in any calendar year shall:

(i) Pay without demand the penalty required, and pay upon demand the interest on that penalty, as required by 40 CFR part 77; and (ii) Comply with the terms of an approved offset plan, as required by 40 CFR part 77.

Recordkeeping 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 document is created. This period may be extended for cause, at any time prior to the end of 5 years, in writing by the Administrator or permitting authority: .

(i) 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 until such documents are superseded because of the submission of a new certificate of representation changing the designated representative;

EPA Form 7610-16 (Revised 12-2009)

Facility (Source) Name (from STEP 1) Black Dog

Page 105: Draft Air Individual Permit Major Amendment 03700003-101

Facility (Source) Name (from STEP 1) Black Dog

Acid Rain - Page 4

Recordkeeping and Reporting Requirements, Cont'd.

STEP 3, cont'd. (ii) All emissions monitoring information, in accordance with 40 CFR part 75, provided that to the extent that 40 CFR part 75 provides for a 3-year period for recordkeeping, the 3-year period shall apply. (iii) Copies of all reports, compliance certifications, and other submissions and all records made or required under the Acid Rain Program; and, (iv) .Copies of all documents used to complete an Acid Rain permit application and any other submission under the Acid Rain Program or to demonstrate compliance with the requirements of the Acid Rain Program.

(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 40 CFR part 72 subpart I and 40 CFR part 75. ·

Liability

(1) Any person who knowingly violates any requirement or prohibition of the Acid Rain Program, a complete Acid Rain permit application, an Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8, including any requirement for the payment of any penalty owed to the United States, shall be subject to enforcement pursuant to section 113(c) of the Act. (2) Any person who knowingly makes a false, material statement in any record, submission, or report under the Acid Rain Program shall be subject to criminal enforcement pursuant to section 113(c) of the Act and 18 U.S.C. 1001. (3) No permit revision shall excuse any violation of the requirements of the Acid Rain Program that occurs prior to the date that the revision takes effect. (4) Each affected source and each affected unit shall meet the requirements of the Acid Rain Program. (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. (6) Any provision of the Acid Rain Program that applies to an affected unit (including a provision applicable to the designated representative of an affected unit) shall also apply to the owners and operators of such unit. (7) Each violation of a provision of 40 CFR parts 72, 73, 74, 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 of the Act.

Effect on Other Authorities

No provision of the Acid Rain Program, an Acid Rain permit application, an Acid Rain permit, or an exemption under 40 CFR 72.7 or 72.8 shall be construed as: (1) Except as expressly provided in title IV of the Act, 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 1 including the provisions of title I of the Act relating

EPA Form 7610·16 (Revised 12-2009)

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Acid Rain - Page 5

· Effect on Other Authorities, Cont'd.

to applicable National Ambient Air Quality Standards or State Implementation Plans;

STEP 3, Cont'd. (2) Limiting the number of allowances a source can hold; provided, that the number of allowances held by the source shall not affect the source's obligation to comply with any other provisions of the Act; (3) Requiring a change of any kind in any State law regulating electric utility rates and charges, affecting any State law regarding such State regulation, or limiting such State regulation, including any prudence review requirements under such State law; (4) Modifying the Federal Power Act or affecting the authority of the Federal Energy Regulatory Commission under the Federal Power Act; or, (5) Interfering with or impairing any program for competitive bidding for power supply in a State in which such program is established.

Certification

STEP 4 Read the certification statement, sign, and date.

I am authorized to make this submission on behalf of the owners and operators of the affected source or affected units for which the submission is made. 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 statements and . information are to the best of 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, including the possibility of fine or imprisonment.

EPA Form 7610-16 (Revised 12-2009)

Facility (Source) Name (from STEP 1) Black Dog

Page 107: Draft Air Individual Permit Major Amendment 03700003-101

The Acid Rain Program requires the designated representative to submit an Acid Rain permit application for each source with an affected unit. A complete Certificate of Representation must be received by EPA before the permit application is submitted to the title V permitting authority. A complete Acid Rain permit application, once submitted, is binding on the owners and operators of the affected source and is enforceable in the absence of a permit until the title V permitting authority either issues a permit to the source or disapproves the application.

Please type or print. If assistance is needed, contact the title V permitting authority.

STEP 1 A Plant Code is a 4 or 5 digit number assigned by the Department of Energy=s (DOE) Energy

Information Administration (EIA) to facilities that generate electricity. For older facilities, "Plant Code" is synonymous with "ORISPL" and "Facility" codes. If the facility generates electricity but no Plant Code has been assigned, or if there is uncertainty regarding what the Plant Code is, send an email to the EIA. The email address is [email protected].

STEP 2 In column "a," identify each unit at the facility by providing the appropriate unit identification number,

consistent with the identifiers used in the Certificate of Representation and with submissions made to DOE and/or EIA. Do not list duct burners. For new units without identification numbers, owners and operators must assign identifiers consistent with EIA and DOE requirements. Each Acid Rain Program submission that includes the unit identification number(s) (e.g., Acid Rain permit applications, monitoring plans, quarterly reports, etc.) should reference those unit identification numbers in exactly the same way that they are referenced on the Certificate of Representation.

Submission Deadlines

For new units, an initial Acid Rain permit application must be submitted to the title V permitting authority 24 months before the date the unit commences operation. Acid Rain permit renewal applications must be submitted at least 6 months in advance of the expiration of the acid rain portion of a title V permit, or such longer time as provided for under the title V permitting authority's operating permits regulation.

Submission Instructions

Submit this form to the appropriate title V permitting authority. If you have questions regarding this form, contact your local, State, or EPA Regional Acid Rain contact, or call EPA's Acid Rain Hotline at (202) 343- 9620.

Paperwork Burden Estimate

The public reporting and record keeping burden for this collection of information is estimated to average 8 hours per response. Burden means the total time, effort, or financial resources expended by persons to generate, maintain, retain, or disclose or provide information to or for a Federal agency. This includes the time needed to review instructions; develop, acquire, install, and utilize technology and systems for the purposes of collecting, validating, and verifying information, processing and maintaining information, and disclosing and providing information; adjust the existing ways to comply with any previously applicable instructions and requirements; train personnel to be able to respond to a collection of information; search data sources; complete and review the collection of information; and transmit or otherwise disclose the information. An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB control number.

&EPA Instructions for the Acid Rain Program Permit Application

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Send comments on the Agency's need for this information, the accuracy of the provided burden estimates, and any suggested methods for minimizing respondent burden, including through the use of automated collection techniques to the Director, Collection Strategies Division, U.S. Environmental Protection Agency (2822T), 1200 Pennsylvania Ave., NW., Washington, D.C. 20460. Include the OMB control number in any correspondence. Do not send the completed form to this address.

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EPA Form 7610-20 (Revised 7-)

United States Environmental Protection Agency OMB Nos. 2060-0258, 2060-0570, and 2060-0667 Acid Rain, CAIR, and Transport Rule Programs Approval Expires 07/31/2014

Retired Unit Exemption For more information, see instructions and refer to 40 CFR 72.8, 96.105, 96.205, 96.305, 97.405, 97.505, 97.605, and 97.705, or a comparable state regulation, as applicable.

This submission is: □X New □ Revised

STEP 1 Identify the unit by plant (source) name, State, ORIS/plant code and unit ID#.

STEP 2 Indicate the program(s) that the unit is subject to

Black Dog

Plant (Source) Name

MN

State

1904

ORIS/Plant Code

3

Unit ID#

□X Acid Rain □ Transport Rule NOx Annual

□ CAIR NOX Annual □ Transport Rule NOx Ozone Season

□ CAIR SO2 □ Transport Rule SO2 Annual

□ CAIR NOx Ozone Season

STEP 3 Identify the date on which the unit was (or will be) permanently retired.

STEP 4 If the unit is subject to the Acid Rain Program, identify the first full calendar year in which the unit meets (or will meet) the requirements of 40 CFR 72.8(d).

STEP 5 Read the appropriate special provisions.

Acid Rain Program Special Provisions

(1) A unit exempt under 40 CFR 72.8 shall not emit any sulfur dioxide and nitrogen oxides starting on the date that the exemption takes effect. The owners and operators of the unit will be allocated allowances in accordance with 40 CFR part 73 subpart B. (2) A unit exempt under 40 CFR 72.8 shall not resume operation unless the designated representative of the source that includes the unit submits a complete Acid Rain permit application under 40 CFR 72.31 for the unit not less than 24 months prior to the date on which the unit is first to resume operation. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 72.8 shall comply with the requirements of the Acid Rain Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) For any period for which a unit is exempt under 40 CFR 72.8, the unit is not an affected unit under the Acid Rain Program and 40 CFR part 70 and 71 and is not eligible to be an opt-in source under 40 CFR part 74. As an unaffected unit, the unit shall continue to be subject to any other applicable requirements under 40 CFR parts 70 and 71. (5) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 72.8 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time prior to the end of the period, in writing by the Administrator or the permitting authority. The owners and operators bear the burden of proof that the unit is permanently retired. (6) On the earlier of the following dates, a unit exempt under 40 CFR 72.8(b) or (c) shall lose its exemption and become an affected unit under the Acid Rain Program and 40 CFR part 70 and 71: (i) the date on which the designated representative submits an Acid Rain permit application under paragraph (2); or (ii) the date on which the designated representative is required under paragraph (2) to submit an Acid Rain permit application. For the purpose of applying monitoring requirements under 40 CFR part 75, a unit that loses its exemption under 40 CFR 72.8 shall be treated as a new unit that commenced commercial operation on the first date on which the unit resumes operation.

January 1, 2016

April 16, 2015

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EPA Form 7610-20 (Revised 7-)

Retired Unit Exemption

Page 2 of 5

CAIR NOX Annual Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.105(a) shall not emit any nitrogen oxides, starting on the date that the exemption takes effect. (2) The permitting authority will allocate CAIR NOX allowances under 40 CFR 96 subpart EE to a unit exempt under 40 CFR 96.105(a). (3) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.105(a) shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (4) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.105(a) shall comply with the requirements of the CAIR NOX Annual Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (5) A unit exempt under 40 CFR 96.105(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under 40 CFR 96.122 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2009 or the date on which the unit resumes operation. (6) On the earlier of the following dates, a unit exempt under 40 CFR 96.105(a) shall lose its exemption: (i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under 40 CFR 96.105(b)(5); (ii) The date on which the CAIR designated representative is required under 40 CFR 96.105(b)(5) to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (7) For the purpose of applying monitoring, reporting, and recordkeeping requirements under 40 CFR 96 subpart HH, a unit that loses its exemption under 40 CFR 96.105(a) shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

CAIR SO2 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.205(a) shall not emit any sulfur dioxide, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.205(a) shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.205(a) shall comply with the requirements of the CAIR SO2 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 96.205(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under 40 CFR 96.222 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2010 or the date on which the unit resumes operation. (5) On the earlier of the following dates, a unit exempt under 40 CFR 96.205(a) shall lose its exemption: (i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under 40 CFR 96.205(b)(4); (ii) The date on which the CAIR designated representative is required under 40 CFR 96.205(b)(4) to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (6) For the purpose of applying monitoring, reporting, and recordkeeping requirements under 40 CFR 96 subpart HHH, a unit that loses its exemption under 40 CFR 96.205(a) shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

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EPA Form 7610-20 (Revised 7-)

Retired Unit Exemption

Page 3 of 5

CAIR NOX Ozone Season Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.305(a) shall not emit any nitrogen oxides, starting on the date that the exemption takes effect. (2) The Administrator or the permitting authority will allocate CAIR NOX Ozone Season allowances under 40 CFR 96 subpart EEEE to a unit exempt under 40 CFR 96.305(a). (3) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.305(a) shall retain at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (4) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.305(a) shall comply with the requirements of the CAIR NOX Ozone Season Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (5) A unit exempt under 40 CFR 96.305(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under § 97.322 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2009 or the date on which the unit resumes operation. (6) On the earlier of the following dates, a unit exempt under paragraph (a) of this section shall lose its exemption:(i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under paragraph (b)(5) of this section;(ii) The date on which the CAIR designated representative is required under paragraph (b)(5) of this section to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (7) For the purpose of applying monitoring, reporting, and recordkeeping requirements under subpart HHHH of this part, a unit that loses its exemption under paragraph (a) of this section shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule NOX Annual Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.405 shall not emit any NOX, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.405 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt 40 CFR 97.405 shall comply with the requirements of the TR NOX Annual Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.405 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule NOX Ozone Season Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.505 shall not emit any NOX, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.505 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.505 shall comply with the requirements of the TR NOX Ozone Season Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.505 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and

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EPA Form 7610-20 (Revised 7-)

Retired Unit Exemption

Page 4 of 5

recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule SO2 Group 1 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.605 shall not emit any SO2, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.605 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.605 shall comply with the requirements of the TR SO2 Group 1 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.605 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule SO2 Group 2 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.705 shall not emit any SO2, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.705 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.705 shall comply with the requirements of the TR SO2 Group 2 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.705 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

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EPA Form 7610-20 (Revised 7-)

Retired Unit Exemption

Page 5 of 5

STEP 6 Read the statement of compliance and the appropriate certification statements and sign and date.

Statement of Compliance I certify that the unit identified above at STEP 1 was (or will be) permanently retired on the date identified at STEP 3 and will comply with the appropriate Special Provisions listed at STEP 5.

Certification (for Acid Rain, CAIR, or Transport Rule designated representatives or alternate Acid Rain, CAIR, or Transport Rule designated representatives only) I am authorized to make this submission on behalf of the owners and operators of the source and unit for which the submission is made. 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 statements and information are to the best of 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, including the possibility of fine or imprisonment.

Name

Title

Owner Company Name

Phone

Email

Signature

Date

Certification (for certifying officials of units subject to the Acid Rain Program only) 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 statements and information are to the best of 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, including the possibility of fine or imprisonment.

Name Brian Behm Title Plant Director Northern States Power Company, a Minnesota corporation, d/b/a Xcel Energy Owner Company Name

Phone 952-895-4219

Email [email protected]

Signature

Date

Page 114: Draft Air Individual Permit Major Amendment 03700003-101

EPA Form 7610-20 (Revised 7-2014)

United States Environmental Protection Agency OMB Nos. 2060-0258, 2060-0570, and 2060-0667 Acid Rain, CAIR, and Transport Rule Programs Approval Expires 07/31/2014

Retired Unit Exemption For more information, see instructions and refer to 40 CFR 72.8, 96.105, 96.205, 96.305, 97.405, 97.505, 97.605, and 97.705, or a comparable state regulation, as applicable.

This submission is: □X New □ Revised

STEP 1 Identify the unit by plant (source) name, State, ORIS/plant code and unit ID#.

STEP 2 Indicate the program(s) that the unit is subject to

Black Dog

Plant (Source) Name

MN

State

1904

ORIS/Plant Code

4

Unit ID#

□X Acid Rain □ Transport Rule NOx Annual □ CAIR NOX Annual □ Transport Rule NOx Ozone Season

□ CAIR SO2 □ Transport Rule SO2 Annual

□ CAIR NOx Ozone Season

STEP 3 Identify the date on which the unit was (or will be) permanently retired.

STEP 4 If the unit is subject to the Acid Rain Program, identify the first full calendar year in which the unit meets (or will meet) the requirements of 40 CFR 72.8(d).

STEP 5 Read the appropriate special provisions.

Acid Rain Program Special Provisions

(1) A unit exempt under 40 CFR 72.8 shall not emit any sulfur dioxide and nitrogen oxides starting on the date that the exemption takes effect. The owners and operators of the unit will be allocated allowances in accordance with 40 CFR part 73 subpart B. (2) A unit exempt under 40 CFR 72.8 shall not resume operation unless the designated representative of the source that includes the unit submits a complete Acid Rain permit application under 40 CFR 72.31 for the unit not less than 24 months prior to the date on which the unit is first to resume operation. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 72.8 shall comply with the requirements of the Acid Rain Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) For any period for which a unit is exempt under 40 CFR 72.8, the unit is not an affected unit under the Acid Rain Program and 40 CFR part 70 and 71 and is not eligible to be an opt-in source under 40 CFR part 74. As an unaffected unit, the unit shall continue to be subject to any other applicable requirements under 40 CFR parts 70 and 71. (5) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 72.8 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time prior to the end of the period, in writing by the Administrator or the permitting authority. The owners and operators bear the burden of proof that the unit is permanently retired. (6) On the earlier of the following dates, a unit exempt under 40 CFR 72.8(b) or (c) shall lose its exemption and become an affected unit under the Acid Rain Program and 40 CFR part 70 and 71: (i) the date on which the designated representative submits an Acid Rain permit application under paragraph (2); or (ii) the date on which the designated representative is required under paragraph (2) to submit an Acid Rain permit application. For the purpose of applying monitoring requirements under 40 CFR part 75, a unit that loses its exemption under 40 CFR 72.8 shall be treated as a new unit that commenced commercial operation on the first date on which the unit resumes operation.

January 1, 2016

April 16, 2015

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Retired Unit Exemption

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CAIR NOX Annual Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.105(a) shall not emit any nitrogen oxides, starting on the date that the exemption takes effect. (2) The permitting authority will allocate CAIR NOX allowances under 40 CFR 96 subpart EE to a unit exempt under 40 CFR 96.105(a). (3) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.105(a) shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (4) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.105(a) shall comply with the requirements of the CAIR NOX Annual Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (5) A unit exempt under 40 CFR 96.105(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under 40 CFR 96.122 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2009 or the date on which the unit resumes operation. (6) On the earlier of the following dates, a unit exempt under 40 CFR 96.105(a) shall lose its exemption: (i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under 40 CFR 96.105(b)(5); (ii) The date on which the CAIR designated representative is required under 40 CFR 96.105(b)(5) to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (7) For the purpose of applying monitoring, reporting, and recordkeeping requirements under 40 CFR 96 subpart HH, a unit that loses its exemption under 40 CFR 96.105(a) shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

CAIR SO2 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.205(a) shall not emit any sulfur dioxide, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.205(a) shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.205(a) shall comply with the requirements of the CAIR SO2 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 96.205(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under 40 CFR 96.222 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2010 or the date on which the unit resumes operation. (5) On the earlier of the following dates, a unit exempt under 40 CFR 96.205(a) shall lose its exemption: (i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under 40 CFR 96.205(b)(4); (ii) The date on which the CAIR designated representative is required under 40 CFR 96.205(b)(4) to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (6) For the purpose of applying monitoring, reporting, and recordkeeping requirements under 40 CFR 96 subpart HHH, a unit that loses its exemption under 40 CFR 96.205(a) shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

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CAIR NOX Ozone Season Trading Program Special Provisions

(1) A unit exempt under 40 CFR 96.305(a) shall not emit any nitrogen oxides, starting on the date that the exemption takes effect. (2) The Administrator or the permitting authority will allocate CAIR NOX Ozone Season allowances under 40 CFR 96 subpart EEEE to a unit exempt under 40 CFR 96.305(a). (3) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 96.305(a) shall retain at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the permitting authority or the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (4) The owners and operators and, to the extent applicable, the CAIR designated representative of a unit exempt under 40 CFR 96.305(a) shall comply with the requirements of the CAIR NOX Ozone Season Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (5) A unit exempt under 40 CFR 96.305(a) and located at a source that is required, or but for this exemption would be required, to have a title V operating permit shall not resume operation unless the CAIR designated representative of the source submits a complete CAIR permit application under § 97.322 for the unit not less than 18 months (or such lesser time provided by the permitting authority) before the later of January 1, 2009 or the date on which the unit resumes operation. (6) On the earlier of the following dates, a unit exempt under paragraph (a) of this section shall lose its exemption:(i) The date on which the CAIR designated representative submits a CAIR permit application for the unit under paragraph (b)(5) of this section;(ii) The date on which the CAIR designated representative is required under paragraph (b)(5) of this section to submit a CAIR permit application for the unit; or (iii) The date on which the unit resumes operation, if the CAIR designated representative is not required to submit a CAIR permit application for the unit. (7) For the purpose of applying monitoring, reporting, and recordkeeping requirements under subpart HHHH of this part, a unit that loses its exemption under paragraph (a) of this section shall be treated as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule NOX Annual Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.405 shall not emit any NOX, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.405 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt 40 CFR 97.405 shall comply with the requirements of the TR NOX Annual Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.405 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule NOX Ozone Season Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.505 shall not emit any NOX, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.505 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.505 shall comply with the requirements of the TR NOX Ozone Season Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.505 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and

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recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule SO2 Group 1 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.605 shall not emit any SO2, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.605 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.605 shall comply with the requirements of the TR SO2 Group 1 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.605 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

Transport Rule SO2 Group 2 Trading Program Special Provisions

(1) A unit exempt under 40 CFR 97.705 shall not emit any SO2, starting on the date that the exemption takes effect. (2) For a period of 5 years from the date the records are created, the owners and operators of a unit exempt under 40 CFR 97.705 shall retain, at the source that includes the unit, records demonstrating that the unit is permanently retired. The 5-year period for keeping records may be extended for cause, at any time before the end of the period, in writing by the Administrator. The owners and operators bear the burden of proof that the unit is permanently retired. (3) The owners and operators and, to the extent applicable, the designated representative of a unit exempt under 40 CFR 97.705 shall comply with the requirements of the TR SO2 Group 2 Trading Program concerning all periods for which the exemption is not in effect, even if such requirements arise, or must be complied with, after the exemption takes effect. (4) A unit exempt under 40 CFR 97.705 shall lose its exemption on the first date on which the unit resumes operation. Such unit shall be treated, for purposes of applying allocation, monitoring, reporting, and recordkeeping requirements under this subpart, as a unit that commences commercial operation on the first date on which the unit resumes operation.

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STEP 6 Read the statement of compliance and the appropriate certification statements and sign and date.

Statement of Compliance I certify that the unit identified above at STEP 1 was (or will be) permanently retired on the date identified at STEP 3 and will comply with the appropriate Special Provisions listed at STEP 5.

Certification (for Acid Rain, CAIR, or Transport Rule designated representatives or alternate Acid Rain, CAIR, or Transport Rule designated representatives only) I am authorized to make this submission on behalf of the owners and operators of the source and unit for which the submission is made. 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 statements and information are to the best of 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, including the possibility of fine or imprisonment.

Name

Title

Owner Company Name

Phone

Email

Signature

Date

Certification (for certifying officials of units subject to the Acid Rain Program only) 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 statements and information are to the best of 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, including the possibility of fine or imprisonment.

Name Brian Behm Title Plant Director Northern States Power Company, a Minnesota corporation, d/b/a Xcel Energy Owner Company Name

Phone 952-895-4219

Email [email protected]

Signature

Date


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