University of Minnesota Board of Regents. 202 Morrill Hall Minneapolis, Hennepin County, Minnesota 55455

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2 AIR EMISSION PERMIT NO Major Amendment IS ISSUED TO University of Minnesota Board of Regents UNIVERSITY OF MN - TWIN CITIES 202 Morrill Hall Minneapolis, Hennepin County, Minnesota 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 below. Stage 1 conditions authorize modification of the facility and the operation of the new, modified, and debottlenecked emissions units at the address listed above until final action is taken on Stage 2. Air Emission Permit No , remains effective until the Stage 2 Issue Date shown below. Beginning on the Stage 2 Issue Date shown below, Air Emission Permit No , supersedes Air Emission Permit No , and authorizes the Permittee to operate the stationary source at the address listed above unless otherwise noted in Table A. 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 to 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 and as such as are enforceable by U.S. Environmental Protection Agency (EPA) Administrator or citizens under the Clean Air Act. Permit Type: Federal; Pt 70/Major for NSR Operating Permit Issue Date: 5/16/2006 Stage 1 Issue Date - Authorization to Construct and Operate: January 27, 2015 Stage 2 Issue Date - Major Amendment Issue Date: May 5, 2015 Expiration Date: 5/16/2011 * - Title I Conditions do not expire. *The Permittee may continue to operate this facility after the expiration date of the permit, per the provision under Minn. R , subp. 3. (Title V Reissuance Application was received December 22, 2010.) TDD (for hearing and spee ch impaired only): (651) Printed on recycled paper containing at least 10% f ibers from paper recycled by consum ers

3 Stage 1 Issuance Stage 2 Issuance Don Smith, P.E., Manager Air Quality Permits Section Industrial Division Industrial Division for John Linc Stine for John Linc Stine Commissioner Commissioner Minnesota Pollution Control Agency Minnesota Pollution Control Agency

4 ~~~~-~ ~ ~-~ Permit Applications Table Permit Type Application Date Permit Action Total Facility Operating Permit January 1, Moderate Amendment September 19, Moderate Amendment January 16, Moderate Amendment April 17, Moderate Amendment May 22, Moderate Amendment November 14, Moderate Amendment February 6, Moderate Amendment February 11, Administrative Amendment May 15, Moderate Amendment September 13, Minor Amendment December 23, Major Amendment August 7, TABLE OF CONTENTS Notice to the Permittee Permit Shield Facility Description Amendment Description Table A: Limits and Other Requirements Table B: Submittals Appendices Appendix A - Insignificant Activities and Applicable Requirements Appendix B - Parameters Used in Air Dispersion Modeling Analysis

5 NOTICE TO THE PERMITTEE: Your stationary source may be subject to the requirements of the Minnesota Pollution Control Agency's (MPCA) solid waste, hazardous waste, and water quality programs. If you wish to obtain information on these programs, including information on obtaining any required permits, please contact the MPCA general information number at: Metro Area Outside Metro Area nv The rules governing these programs are contained in Minn. R. chs Written questions may be sent to: Minnesota Pollution Control Agency, 520 Lafayette Road North, St. Paul, Minnesota Questions about this air emission permit or about air quality requirements can also be directed to the telephone numbers and address listed above. PERMIT SHIELD: Subject to the limitations in Minn. R , 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 and , 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. FACILITY DESCRIPTION: The University of Minnesota is a teaching and research institution with two campuses in the Twin Cities: the Minneapolis campus and the St. Paul campus. The two campuses are approximately three miles apart and are connected by a transitway 80 feet wide owned by the University. The Facility covers an area of approximately 1154 acres and contains approximately 22,000,000 gross square feet of buildings overall. The Facility employs approximately 15,000 people and serves a population of 40,000 full time and 11,000 part time students. The Facility owns and operates, or contracts with other parties who operate, a variety of facilities that support its teaching and research functions. The Minneapolis Campus consists of the East and West Bank locations adjacent to the industrial downtown Minneapolis stretch of the Mississippi River. The campus has a variety of teaching and research facilities in the areas of engineering, liberal arts, business, health sciences, and athletics. The Minneapolis Campus provides dormitory and other facilities that are operated by the Facility. A central steam plant (Southeast Plant), which directly provides steam for heating and cooling to the Minneapolis Campus, is located on the East Bank. The Southeast Plant is owned by the Facility, but is currently operated by Veolia Energy Solutions, LLC (Veolia). The Southeast Plant provides steam to most oncampus buildings and to several off-campus customers through the University system.

6 The St. Paul Campus is generally located east of Cleveland Avenue, south of Larpenteur Avenue, west of the Minnesota State Fairgrounds, and north of Como Avenue in St. Paul. The campus has its primary teaching and research emphasis in agricultural studies. Prominent facilities include a veterinary medicine teaching and research facility, biological sciences complex, agricultural engineering building, agronomy and plant research facilities, and animal husbandry facilities. The facility is an existing major source under New Source Review regulations. The facility has a limited potential to emit over 250 tons per year of Carbon Monoxide (CO), Nitrogen Oxides (NOx), Particulate Matter less than 10 microns (PM 10 ), Particulate Matter (PM), and Sulfur Oxides (SOx). PERMIT ACTION 002 DESCRIPTION: This permit action was two moderate amendments and one minor amendment to a Part 70 permit to authorize the construction and operation of five emergency generators at four different buildings at the facility. These units qualified for the amendment based on the potential emissions being below significant thresholds. The generators, which were modified or reconstructed after July 11, 2005, or manufactured after April 1, 2006, are subject to 40 CFR pt. 60, subp PERMIT ACTION 003 DESCRIPTION: This permit action was a moderate amendment that authorized the construction and operation of an emergency generator at the Medical Biosciences Building at the facility. The unit qualified for the amendment based on the potential emissions being below significant thresholds. The generator is subject to 40 CFR pt. 60, subp PERMIT ACTION 004 DESCRIPTION: This permit action was a moderate amendment that authorized the construction and operation of two diesel emergency generators, one portable (EU 152), and one at the Science Teaching and Student Services Center (EU 153). These units qualified for the amendment based on the potential emissions being below significant thresholds. These generators are subject to 40 CFR pt. 60, subp PERMIT ACTION 005 DESCRIPTION: This permit action was a moderate amendment to a Part 70 permit to authorize the construction and operation of two diesel emergency generators (EU 154, 155) and two boilers (EU 156, 157) at the new Cancer/Cardio Research Facility. These units qualified for a moderate amendment because the potential emissions are below significant thresholds. These generators are subject to 40 CFR pt. 60, subp and 40 CFR pt. 63, subp. ZZZZ. The boilers are subject to 40 CFR pt. 60, subp. De. PERMIT ACTION 006 DESCRIPTION: This permit action was a moderate amendment to authorize the construction and operation of: Two diesel emergency generators (EU 158, 159) at the new Ambulatory Care Clinic. Construction was authorized, prior to permit issuance, via a letter on October 23, These generators are subject to 40 CFR pt. 60, subp and 40 CFR pt. 63, subp. ZZZZ. One diesel emergency generator {EU 160) at the new Microbiology Research Facility located within the Biomedical Discovery District of the East Bank Campus. This generator is subject to 40 CFR pt. 60, subp and 40 CFR pt. 63, subp. ZZZZ. The permit also authorized a 120 day extension to submit computer dispersion modeling information.

7 PERMIT ACTION 007 DESCRIPTION: This permit action is for a major amendment. This permit action will authorize the construction of the proposed Main Plant Combined Heat & Power (CHP) system. The CHP system includes a 22.8 MW combustion turbine (EU 161) generated in series with a 210 million British thermal units per hour (MM Btu/hr) duct burner (EU 162). Exhaust gases will be used to produce up to 270,000 pounds of steam per hour for the Minneapolis campus steam distribution system. The CHP system can operate under a number of scenarios: Full or partial combustion turbine generator (CTG) operation with no supplemental duct burner firing. Steam is produced from only the CTG exhaust gas. Full CTG operation with full or partial duct burner operation. The system will use natural gas as primary fuel and ultra-low sulfur distillate oil (ULSD) when gas is curtailed or physically unavailable. The CHP system includes an oxidation catalyst to reduce CO. In addition, the CTG uses a stage, dry low NOx combustor as well as an aqueous ammonia-based selective catalytic reduction system to control NOx. The CHP is subject to 40 CFR pt. 60, subp. KKKK. A 500 kilowatt (kw) diesel emergency generator (EU 163) will also be installed. The generator is subject to 40 CFR pt. 60, subp and 40 CFR pt. 63, subp. ZZZZ. Six existing coal-fired boilers will be designated as limited use boilers under the provisions of 40 CFR pt. 63, subp. JJJJJJ. To do so, annual capacity limits of 10 percent were added to EU004, EU005, EU Upon the commencement of commercial operation of the Main Plant Combined Heating Plant's turbine and duct burner, two coal fired boilers (EU 004 and EU 005) will be retired.

8 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-1 05/04/15 Table A contains limits and other requirements with which your facility must comply. The limits are located in the first column of the table (What To do). The limits can be emission limits or operational limits. This column also contains the actions that you must take and the records you must keep to show that you are complying with the limits. The second column of Table A (Why to do it) lists the regulatory basis for these limits. Appendices included as conditions of your permit are listed in Table A und~r total facility requirements. Subject Item: Total Facility SOURCE-SPECIFIC REQUIREMENTS What to do Why to do it,. Comply with Fugitive Emission Control Plan: The Permittee shall follow the actions Minn Stat. Section subd. 4a; Minn. R. and recordkeeping specified in the control plan. The plan may be amended by the ; Minn R , subp. 2; Minn. R. Permittee with the Commissioner's approval. If the Commissioner determines the ; Minn R Permittee is out of compliance with Minn. R or the fugitive control plan, then the Permittee may be required to amend the control plan and/or to install and operate particulate matter ambient monitors as requested by the Commissioner The facility currently uses ozone-depleting substances as defined in 40 CFR pt. 40 CFR pt Sections of the 1990 Clean Air Act Amendments and 40 CFR pt. 82 may apply to your facility. Read Sections and 40 CFR pt. 82 to determine all the requirements that apply to your facility. Inapplicable Requirement: Standards of Performance for Commercial and 40 CFR pt. 60, subp. CCCC; Minn. R , Industrial Solid Waste Incineration Units, 40 CFR pt. 60, subp. CCCC do not apply subp. (A)(2) to this facility. The permit shield applies in accordance with Minn. R , subp. A(2). Inapplicable Requirement: Standards of Performance for Grain Elevators, 40 CFR pt. 60, subp. DD do not apply to this facility. The permit shield applies in accordance with Minn. R , subp. A(2). 40 CFR pt. 60, subp. DD; Minn. R , subp. (A)(2) Inapplicable Requirement: Minnesota Standards of Performance for Waste Minn. R , subp. (A)(2); Minn. Rules Combustors do not apply to this facility. The permit shield applies in accordance with Minn. R , subp. A(2). DETERMINING IF A PROJECT/MODIFICATION IS SUBJECT TO NEW SOURCE REVIEW These requirements apply if a reasonable possibility (RP) as defined in 40 CFR Title I Condition: 40 CFR Section (r)(6); Minn. R. Section (r)(6)(vi) exists that a proposed project. analyzed using the ; Minn. R , subp. 2 actual-to-projected-actual (ATPA) test (either by itself or as part of the hybrid test at Section (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 40 CFR Section (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. R Preconstruction Documentation -- Before beginning actual construction on a Title I Condition: 40 CFR Section (r)(6); Minn. R. project, the Permittee shall document the following: ; Minn. R , subp. 4; Minn. R , subps. 4 & 5 1. Project description 2. Identification of any emission unit (EU) whose emissions of an NSR pollutant could be affected 3. Pre-change potential emissions of any affected existing EU, and the projected post-change potential emissions of any affected existing or new EU. 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 EU 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

9 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities 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 The Permittee must submit a report to the Agency if the annual summed (actual, plus potential if 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 (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-2 05/04/15 Title I Condition: 40 CFR Section (r)(6); Minn. R ; Minn. R , subps. 4 & 5 Title I Condition 40 CFR Section (r)(6); Minn. R ; Minn. R , subps 4 & 5 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 increase are exceeded. c. Any other information, such as an explanation as to why the summed emissions differ from the preconstruction projection. OPERATIONAL REQUIREMENTS Ambient Air Quality Standards: The Permittee shall comply, and upon written request demonstrate compliance, with National Primary and Secondary Ambient Air Quality Standards, 40 CFR pt. 50, and the Minnesota Ambient Air Quality Standards, Minn. R to 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. Air Pollution Control Equipment: Operate all pollution control equipment whenever the corresponding process equipment and emission units are operated, unless otherwise noted in Table A. Operation and Maintenance Plan Retain at the stationary source an operation and maintenance plan for all air pollution control equipment At a minimum, the 0 & M plan shall identify all air pollution control equipment and shall include a preventative maintenance program for that equipment. a description of (the minimum but not necessarily the only) corrective actions to be taken to restore the equipment 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 the records kept to demonstrate plan implementation 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. 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 Noise: The Permittee shall comply with the noise standards set forth in Minn. R O to 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. Inspections: The Permittee shall comply with the inspection procedures and requirements as found in Minn. R , subp. 9(A). The Permittee shall comply with the General Conditions listed in Minn. R , subp. 16. PERFORMANCE TESTING ~ Performance Testing: Conduct all performance tests in accordance with Minn. R ch unless otherwise noted in Tables A. B. and/or C 40 CFR pt. 50; Minn. Stat. Sec , subds. 4a and 9; Minn. R , subps. 7A, 7L and 7M; Minn. R , subps. 1, 2, and 4; Minn. R Minn. R Minn. R , subp. 2; Minn. R , subp. 16(J) Minn. R , subp. 14 and Minn. R , subp. 16(J) Minn. R , subp. 4 Minn. R Minn. R O Minn. R , subp. 9(A) Minn. R , subp. 16 Minn R. ch. 7017

10 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities Performance Test Notifications and Submittals: Performance Tests are due as outlined in Tables A and B of the permit. See Table B for additional testing requirements. A-3 05/04/15 Minn. Rs , subp. 1-4, and Minn. R , subp. 1-2 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 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 alternative format as allowed by Minn. R Limits set as a result of a performance test (conducted before or after permit issuance) apply until superseded as specified by Minn. R following formal review of a subsequent performance test on the same unit. MONITORING REQUIREMENTS Monitoring Equipment Calibration - The Permittee shall either: Minn. R Minn. R , subp. 4(D) 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. Operation of Monitoring Equipment: Unless otherwise noted in Tables A. B. and/or C, 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. MODELING REQUIREMENT RECORDKEEPING Record keeping: Retain all records at the stationary source 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 permit. Records must conform to the requirements listed in Minn. R , subp. 5(A). Recordkeeping: Maintain records describing any insignificant modifications (as required by Minn. R , subp. 3) or changes contravening permit terms (as required by Minn. R subp. 2), including records of the emissions resulting from those changes. REPORTING/SUBMITTALS 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 , subp. 3. Minn. R , subp. 4(D) Minn. R , subp. 5(C) Minn. R , subp. 5(8) Minn. R 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.

11 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities A-4 05/04/15 Permit Number: 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, Band C of Minn. R , 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 breakdown is over.., 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. 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. Application for Permit Amendment: If a permit amendment is needed, submit an application in accordance with the requirements of Minn. R through Minn. R Submittal dates vary, depending on the type of amendment needed. Application for Permit Reissuance: due 180 days before expiration of existing permit. 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 , 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 ~qq:~ube.:._~l 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. Emission Fees: due 30 days after receipt of an MPCA bill. Minn. R , subp. 2 Minn. R subp. 1 Minn. R , subp. 1 Minn. R Minn. R Minn. R , subp. 2 Minn. R , subp 1 (H) Minn. R Minn. R Minn. R Minn. R

12 TABLE A: LIMITS AND OTHER REQUIREMENTS A-5 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: GP 001 New and modified boilers (annual limits to avoid mod) Associated Items: EU 001 SG201 - Circulating Fluidized Bed Boiler EU 002 SG202 - Medium Pressure Package Boiler EU 003 SG203 - High Pressure Package Boiler EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) SV 001 SG201 - CFB Boiler SV 002 SG202/SG203 - Med/High Pressure Package Boilers SV 003 SE3 - Pulverized Coal Boiler SV 004 SE4 - Spreader Stoker Boiler SV 005 SG231 - Med. pressure package boiler (new St. Paul boiler) EMISSION LIMITS What to do Why to do it Total Particulate Matter: less than or equal to 32.9 tons/year using 12-month Title I Condition: Limit to avoid classification as a Rolling Sum. not including condensible emissions to be calculated by the 15th day major modification under 40 CFR Section and of each month for the previous 12-month period. Minn. R PM < 1 O micron: less than or equal to tons/year using 12-month Rolling Sum to be calculated by the 15th day of each month for the previous 12-month period. Sulfur Dioxide: less than or equal to tons/year using 12-month Rolling Sum to be calculated by the 15th day of each month for the previous 12-month period. Title I Condition: Limit to avoid classification as a major modification under 40 CFR Section and Minn. R Title I Condition: Limit to avoid classification as a major modification under 40 CFR Section and Minn. R Nitrogen Oxides: less than or equal to tons/year using 12-month Rolling Title I Condition: Limit to avoid classification as a Sum to be calculated by the 15th day of each month for the previous 12-month major modification under 40 CFR Section and period. Minn. R Carbon Monoxide: less than or equal to tons/year using 12-month Rolling Title I Condition: Limit to avoid classification as a Sum to be calculated by the 15th day of each month for the previous 12-month major modification under 40 CFR Section period. CFR Section 51 Appendix Sand Minn. R Volatile Organic Compounds: less than or equal to 31.2 tons/year using 12-month Title I Condition Limit to avoid classification as a Rolling Sum to be calculated by the 15th day of each month for the previous major modification under 40 CFR Section and 12-month period Minn. R OPERATIONAL REQUIREMENTS ~ Daily Coal Sampling: Sample and analyze for the sulfur content and heating value Title I Condition To avoid classification as a major of the coal daily for EU001. EU004 and EU005 according to the procedures modification under 40 CFR Section 52.21, Minn. R. specified in GP008 of this permit. [Please be aware that further analysis of the and 40 CFR Section 51 Appendix S (for coal is specified in other parts of this permit to comply with other requirements CO) contained within this permit.] Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Title I Condition: To avoid classification as a major receipts from the fuel supplier which certify the sulfur content of the fuel does not modification under 40 CFR Section 52.21, Minn. R. exceed 0.5% by weight. Records shall be maintained for 5 years. This information and 40 CFR Section 51 Appendix S (for may be used to calculate sulfur emissions for EU002, EU003 and EU006. CO) CALCULATIONS Daily Emissions Calculations: Calculate daily the amount of Total PM, PM10, Title I Condition: To avoid classification as a major S02, Nitrogen Oxides (NOx), Carbon Monoxide (CO) and Volatile Organic modification under 40 CFR Section 52.21, Minn. R. Compounds (VOC) emitted from the amount of fuel combusted in the emission and 40 CFR Section 51 Appendix S (for units listed above. Calculate emissions using the emission factors below except CO) that the daily average CEMS value shall be used for calculation of actual S02 and NOx emissions where available.

13 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number: A-6 05/04/ ~~ ~ , Daily Emissions Calculation The following equation shall be used for this calculation: F = SUMiSUMj [EFij x THlij) where: F = the total emission in tons/year of a specific pollutant SUM = sum over all values of i or j i = a number from 1 to 6 identifying each emission unit in the group j = identifies the type of fuel combusted EFij = emission factor as listed below or as determined by performance testing for emission unit i when combusting fuel j, or for pollutants monitored by GEMS in lb/mmbtu, the average value for each day THlij =the total heat input to the emission unit in a day in MMBtu, based on fuel consumption for fuel of type j in emission unit i, (or for pollutants monitored by a GEMS in lb/mmbtu) Monthly Emissions Calculations: By the 15th day of each month, the Permittee shall calculate the 12-month rolling sum value for each pollutant. EMISSION FACTORS Emission factors for total PM, lb/mmbtu: EU001. all fuels, EU002: fuel oil, 0.036; natural gas, EU003: fuel oil, 0.036; natural gas, EU004 coal, 0.034: fuel oil, EU005: coal and approved biomass ; fuel oil, EU006: fuel oil, 0.036; natural gas, Emission factors for PM < 10 micron, lb/mm Btu EU001: all fuels, EU002: fuel oil, 0.056; natural gas, EU003: fuel oil, 0,056; natural gas, EU004: coal, 0.106; fuel oil, EU005: coal and approved biomass, 0.084; fuel oil, EU006: fuel oil, 0.056; natural gas, Emission factors for S02, lb/mmbtu EU001: coal, fuel oil and approved biomass, GEMS data; natural gas, EU002: fuel oil, fuel oil receipts; natural gas, EU003: fuel oil, fuel oil receipts; natural gas, EU004: coal, GEMS data; fuel oil, GEMS data EU005: coal and approved biomass, GEMS data; fuel oil, GEMS data EU006: fuel oil, fuel oil receipts; natural gas, Emission factors for nitrogen oxides, lb/mmbtu EU001: all fuels, GEMS data EU002: all fuels, GEMS data EU003: all fuels, GEMS data EU004: coal, 1.18; fuel oil, EU005: coal and approved biomass, 0.783; fuel oil, EU006: GEMS data Emission factors for carbon monoxide, lb/mmbtu EU001: coal, 0.100; fuel oil, 0.200; natural gas, 0.200; wood and approved biomass when operating at Maximum Continuous Rating (MCR). Emission of CO is not expected to exceed 30 lb/hr at 50% or more of MCR when firing coal only. EU002 all fuels, EU003 all fuels EU004 coal, 0.034; fuel oil, EU005 coal and approved biomass, 0.280; fuel oil EU006 all fuels, Emission factors for volatile organic compounds, lb/mmbtu EU001: coal, 0.015; fuel oil, 0.015; natural gas, 0.001; approved biomass, EU002: all fuels, EU003: all fuels, EU004: coal, 0.003; fuel oil, EU005: coal, 0.003; fuel oil, 0.001; approved biomass, EU006: all fuels, Emisison Factor Adjustments: The Permittees may propose adjustments to the emission factors. Submit the appropriate modification request for approval and subsequent permit amendment. RECORDKEEPING REQUIREMENTS Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix'S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Title I Condition: To avoid classification as a major modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Minn. R , subp. 4 and 6

14 ----~~- ~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-7 05/04/15 Recordkeeping: Record daily the amount of coal combusted in emission units Title I Condition: To avoid classification as a major EU001, EU004, and EU005 and the sulfur content and heating value of the coal. modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) Recordkeeping: Record daily the amount of fuel other than coal combusted in Title I Condition: To avoid classification as a major emission units EU001, EU002, EU003, EU004, EU005, and EU006 and the modification under 40 CFR Section 52.21, Minn. R. heating value of the fuel and 40 CFR Section 51 Appendix S (for CO) Recordkeeping: Maintain a record of the daily emissions of each pollutant and a Title I Condition: To avoid classification as a major 12-month rolling sum of emissions for each pollutant that has a limit within GP001. modification under 40 CFR Section 52.21, Minn. R and 40 CFR Section 51 Appendix S (for CO) PERFORMANCE TESTING Performance Testing Required: Test each emission unit within this group Minn. R , subp. 1 (EU001-EU006) by the date stated within the approved Testing Frequency Plan for PM, PM10, S02, NOx, CO and voe to verify emission factors. If the emission factor requirement for a unit specifies that CEMS or fuel receipts are to be used, then a performance test is not required for that pollutant at that unit. A specific testing frequency for each required pollutant for each boiler is located at the StackNent level of this permit for each boiler in this group. The purpose of the testing is to verify that the emission factors listed in GP001 are not exceeded. They are not to be adjusted downward as a result of performance testing unless the procedures in the "Emission Factor Adjustments" requirement are followed. Calculations of actual emissions for Emission Inventory shall follow the process and hierarchy described in Minn. R

15 ~ -- TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-8 05/04/15 Subject Item: Associated Items: GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) EU 001 SG201 - Circulating Fluidized Bed Boiler EU 002 SG202 - Medium Pressure Package Boiler EU 003 SG203 - High Pressure Package Boiler EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) EU 007 SP1 - Pulverized Coal Boiler EU 008 SP2 - Pulverized Coal Boiler EU 009 SP5 - Spreader Stoker Boiler EU 010 SP6 - Spreader Stoker Boiler EU 011 SP? - Oil/Gas Package Boiler EU 161 Main Plant CHP Turbine EU 162 Main Plant CHP Duct Burner EMISSION LIMITS What to do Why to do it Hydrochloric acid: less than or equal to 7 tons/year using 12-month Rolling Sum to Title I Condition: Limit to avoid classification as a be calculated by the 15th day of each month for the previous 12-month period major source under 40 CFR Section 63.2 and Minn. R. (emissions as Hydrogen Chloride) for emissions units within GP002. See requirements labeled Hydrogen Chloride Monitoring and Monthly Hydrogen Chloride Emissions Calculations below. Hexane: less than or equal to 7780 million cubic feet/year using 12-month Rolling Title I Condition: Limit to avoid major source Sum of natural gas to be calculated by the 15th day of each month for the previous classification under 40 CFR Section 63.2 and Minn. R. 12-month period for emissions units within GP002. Use current emission factors from AP-42 and/or emission factors derived from MPCA-approved stack testing to calculate emissions. HAPs - Total: less than or equal to 15 tons/year using 12-month Rolling Sum to be Title I Condition: Limit to avoid major source calculated by the 15th day of each month for the previous 12-month period. HAP classification under 40 CFR Section 63.2 and Minn. R. emissions for each fuel shall be calculated by use of current AP-42 emission factors based upon actual fuel usage and/or by use of emission factors derived from MPCA-approved stack testing OPERATIONAL LIMITS Heat input from natural gas and approved biomass Natural gas and approved Minn. Stat. Section , subd. 4a biomass shall account for greater than or equal to 70% of the total fuel heat input to steam generators in GP002, based on a 12-month rolling average to be calculated by the 15th day of each month for the previous 12-month period. Approved biomass is defined within EU 001 and EU005. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. MONITORING REQUIREMENTS Hydrogen Chloride Monitoring: Determine hydrogen chloride emissions by Title I Condition: Limit to avoid major source collecting daily coal and/or biomass samples in an as-fired condition at the inlet to classification under 40 CFR Section 63.2 and Minn. R. the steam generating units according to the procedures in GP008 for EU001, EU004, EU005,and EU00?-01 O found within GP002. Combine the samples into a monthly composite, and analyze the monthly composite for chlorine content. For all emission units that burn fuel oil, collect a fuel oil sample from the fuel oil storage tank after each delivery of fuel oil and analyze for chlorine and heating value. Instead of by fuel analyses, the Permittee may determine hydrogen chloride emissions from solid fuels at EU001 with an emission factor of lb HCl/ton fuel (the emission factor shall be adjusted if testing of any solid fuel indicates a fuel chlorine content greater than 1900 mg/kg or an HCI control efficiency less than 99%) The Permittee may propose HCI emission factors based on performance test results for other emission units. CALCULATIONS

16 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities Monthly Hydrogen Chloride Emissions Calculations: Calculate monthly the amount of Hydrogen Chloride emitted from the emission units listed within GP002. For coal, fuel oil and biomass fuels, calculate emissions using the amount and type of fuel combusted, the heating value of the fuel combusted and the results of chlorine content sampling, and/or MPCA-approved emission factors derived from stack-testing results. Monthly Total HAPs Emissions Calculations: By the end of the previous operating day, calculate the amount of Hydrogen Chloride and Total HAPs emitted from the amount of fuel combusted in the emission units listed within GP002. Calculate emissions using current AP-42 emission factors or MPCA-approved stack-testing results. Calculate monthly the amount of Total HAPs emitted from the emission units listed within GP002. Calculate emissions using the amount and type of fuel combusted. the heat content of the fuel combusted, current AP-42 factors. and/or MPCA-approved emission factors derived from stack-testing results. Monthly Fuel Usage Calculations: By the 15th day of each month, the Permittee shall calculate the 12-month rolling sum value for natural gas usage within GP002 boilers (to ensure Hexane emissions are below major source threshold limits for a single HAP). RECORDKEEPING Daily Recordkeeping: By the end of the previous operating day.maintain records of the type, amount and heating value of each fuel combusted including clear indication of the type and quantity of any alternative biomass fired during a test burn. Recordkeeping: Maintain records of the monthly calculation for Heating Value limit, the hydrogen chloride limit, the fuel usage limit and the total HAPs limit. Recordkeeping: Maintain records of the sampling and analysis of coal and fuel oil for chlorine content. A-9 05/04/15 Title I Condition: Limit to avoid major source classification under 40 CFR Section 63.2 and Minn. R Title I Condition: Limit to avoid major source classification under 40 CFR Section 63.2 and Minn. R Title I Condition: To avoid classification as a major source under 40 CFR Section 63.2 and Minn. R. Title I Condition: To avoid classification as a major source under 40 CFR Section 63.2; Minn. R , subp. 4 and 5 Minn. R , subp. 4 and 5 Minn. R , subp. 4 and 5

17 TABLE A: LIMITS AND OTHER REQUIREMENTS A-10 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: GP 003 Db Boilers - General and CEMS/COMS requirements EU 001 SG201 - Circulating Fluidized Bed Boiler EU 002 SG202 - Medium Pressure Package Boiler EU 003 SG203 - High Pressure Package Boiler EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) SV 001 SG201 - CFB Boiler SV 002 SG202/SG203 - Med/High Pressure Package Boilers SV 005 SG231 - Med. pressure package boiler (new St. Paul boiler) What to do CONTINUOUS EMISSIONS MONITORING SYSTEM (CEMS) Why to do it Continuous Operation: CEMS must be operated and data recorded during all 40 CFR Section 60.13(e), Minn. R , subp. 1 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. [EU001- Sulfur Dioxide and NOx CEMS; EU002, EU003 and EU006 - NOx CEMS, see EU level requirements] Excess Emissions/Downtime Reports (EERs): due 30 days after end of each Minn. R , subp. 1; 40 CFR Section 60.?(c) 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 startup, shutdown, and malfunctions. QA Plan Develop and implement a written quality assurance plan that covers Minn. R , subp. 2; 40 CFR pt. 60, App. F; each CEMS. The plan shall be on site and available for inspection within 30 days section 3, Minn. R , subp. 1 (C) after monitor certification. The plan shall contain all of the information required by 40 CFR Section 60, App. F, section 3. CEMS QA/QC: The owner or operator of an affected facility is subject to the 40 CFR pt. 60, Appendix F; 40 CFR Section 60.13(a), performance specifications listed in 40 CFR 60, Appendix B and shall operate, Minn. R , subp. 1 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. CEMS Daily Calibration Drift Check: Permittees must automatically check the zero 40 CFR pt. 60, Appendix F, section 4.1; 40 CFR (low level value between 0 and 20 percent of span value) and span (50 to 100 Section 60.13(d)(1) regarding CEMS; Minn. R. percent of span value) calibration drifts at least once daily. The zero and span , subp. 3 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 shall be used to determine out-of-control periods for CEMS. Additional citation: Minn. R , subp. 1 Cylinder Gas Audit (CGA): due before end of each calendar quarter following 40 CFR pt. 60, Appendix F, section 5.1.2; Minn. R. CEMS certification test. A CGA is not required during any calendar quarter in , subp. 4; Minn. R , subp. 1 (C) which a RATA was performed. CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar 40 CFR pt. 60, Appendix F. section 5.1 1: Minn. R. year following CEMS Certification Test. Follow the procedures in 40 CFR pt. 60, , subp 5; Minn. R , subp 1 (C) Appendix F >--- Cylinder Gas Audit (CGA) Results Summary due 30 days after end of each Minn. R , subp.1 calendar quarter following Cylinder Gas Audit (CGA) ~~--~ Relative Accuracy Test Audit (RATA) Notification due 30 days before CEMS Minn. R , subp 2 RATA. Relative Accuracy Test Audit (RATA) Results Summary: due 30 days after end of Minn. R , subp. 3 each calender quarter in which the CEMS RATA was conducted. Recordkeeping: The owner or operator must retain records of all CEMS Minn. R ; meets requirements of 40 CFR monitoring data and support information for a period of five years from the date of Section 60.7(f) the monitoring sample, measurement or report. Records shall be kept at the source. Monitoring Data: Reduce all NOx and SOx data to 1-hour averages, in accordance 40 CFR Section 60.13(h) regarding continuous with 40 CFR Section 60.13(h). 1-hour averages shall be computed from four or monitoring systems other than COMS. more data points equally spaced over each 1-hour period. CONTINUOUS OPACITY MONITORING SYSTEM (COMS)

18 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities All COMS shall complete a minimum of one cycle of sampling and analyzing for each successive 10-second period and one cycle of data for each successive 6-minute period. Continuous Operation: COMS 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 COMS must not be bypassed except in emergencies where failure to bypass would endanger human health, safety, or plant equipment. Excess Emissions/Downtime Reports (EERs): due 30 days after end of each calendar quarter following initial startup of COMS. QA Plan Required: Develop and implement a written quality assurance plan which covers each COMS. The plan shall be on site and available for inspection within 30 days after monitor certification. The plan shall contain the written procedures listed in Minn. R , subp. 1. COMS QA/QC: The owner or operator of an affected facility is subject to the performance specifications listed in 40 CFR pt. 60, Appendix B and shall operate, calibrate, and maintain each COMS according to the QA/QC procedures in Minn. R COMS Daily Calibration Drift Check: The Permittee must automatically, intrinsic to the opacity monitor, check the zero and upscale (span) calibration drifts at least once daily. The span value shall be between 60% and 80%. The optical surfaces shall be cleaned when the cumulative automatic zero compensation exceeds 4 percent opacity. Minimum procedures must include an automated method for producing a simulated zero opacity condition and an upscale opacity condition as specified in 40 CFR 60.13(d)(2). COMS Calibration Error Audit: due before end of each calendar half-year following COMS Certification Test. Conduct three point calibration error audits at least 3 months apart but no greater than 8 months apart. Conduct audits in accordance with Minn. R , subp. 3. Attenuator Calibration: The Permittee shall have an independent testing company conduct calibrations of each of the neutral density filters used in the calibration error audit according to the procedure in Code of Federal Regulations, Title 40, Part 60, Appendix B, Section 7.1 3, within the time frame of opaciy stability guaranteed by the attenuator manufacturer. The manufacturer's guarantee of stability shall be on site available for inspection. COMS Calibration Error Audit Results Summary: due 30 days after end of each calendar quarter in which the COMS calibration error audit was completed. COMS Monitoring Data: Owners or operators of all COMS shall reduce all data to 6 minute averages. Opacity averages shall be calculated from all equally spaced consecutive 10-second (or shorter) data points in the 6 minute averaging period. Recordkeeping: The owner or operator must retain records of all COMS 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. A-11 05/04/15 Minn. R , subp. 1, 2 & 3; 40 CFR Section 60 13(e)(1) Minn. R , subp. 1; 40 CFR Section 60.13(e) Minn. R , subp. 1; 40 CFR Section 60.7(c) Minn. R CFR Section 60.13(a); Minn. R O Minn. R , subp. 2; 40 CFR Section 60.13(d)(1) regarding COMS and 60.13(d)(2)[40CFR48(e)(2)) Minn. R , subp. 3 Minn. R , subp. 4 Minn. R Minn. R , subp. 2; 40 CFR Section 60.13(h Minn. R

19 TABLE A: LIMITS AND OTHER REQUIREMENTS A-12 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: GP 004 Boilers SG231 and SP7 - fuel oil usage limit EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) EU 011 SP? - Oil/Gas Package Boiler What to do Fuel Usage: less than or equal to 45,200 gallons/day of distillate fuel oil. This is a Minn. R state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. Daily Recordkeeping and Calculation: maintain a daily record of the amount of fuel Minn. R oil combusted in these emission units and the sum of the amount used in each of the units daily. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act ~~--- Why to do it

20 ----~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-13 05/04/15 Subject Item: Associated Items: GP 005 CEMS req'd by state rule EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 161 Main Plant CHP Turbine EU 162 Main Plant CHP Duct Burner SV 003 SE3 - Pulverized Coal Boiler SV 004 SE4 - Spreader Stoker Boiler SV 093 Main Plant CHP What to do Why to do it Continuous Operation: CEMS must be operated and data recorded during all Minn R subps. 1 and 2: Minn. R. periods of emission unit operation including periods of emission unit start-up, , supb 10(A)-(C) 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 , subp. 2. QA Plan: Develop and implement a written quality assurance plan that covers Minn. R , subp. 2 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 unless the Commissioner gives written approval to exclude specific spare parts from the list. The Commissioner may approve requested exclusions if the Commissioner determines that it is not reasonable to keep a specific part on-site after consideration of the consequences of a malfunction of the part, the likelihood of a malfunction, the time required to obtain the part, and other pertinent factors. CEMS Daily Calibration Drift (CD) Test: The CD shall be quantified and recorded Minn. R , subp. 3 at zero (low-level) and upscale (high-level) gas concentrations at least once daily. The CEMS shall be adjusted whenever the CD exceeds twice the specification of 40 CFR pt. 60, Appendix B. 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. Cylinder Gas Audit (CGA): due before end of each calendar half-year following Minn. R subp. 4 CEMS Certification Test. Conduct CGA at least 3 months apart and not greater than 8 months apart. Follow the procedures in 40 CFR pt. 60, Appendix F CEMS Relative Accuracy Test Audit (RATA): due before end of each year starting Minn R subp. 5 01/01/1997. If the relative accuracy is 15% or less the next CEMS RA TA is not due for 24 months. Follow the procedures in 40 CFR pt. 60, Appendix B and Appendix F. Relative Accuracy Test Audit (RATA) Results Summary: due 30 days after the Minn. R , subp. 3 end of each calendar quarter in which the CEMS Relative Accuracy Test Audit was conducted. Recordkeeping: The Permittee must retain records of all CEMS monitoring data Minn. R 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. The records may be maintained in either electronic or paper format, unless it is expressly prohibited. CEMS QA/QC: The Permittee is subject to the performance specifications listed in 40 CFR Section 60.13(a); 40 CFR pt. 60, Appendix F; 40 CFR pt. 60, Appendix Band shall operate, calibrate, and maintain each CEMS Minn. R 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.

21 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-14 05/04/15 Subject Item: Associated Items: GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 007 SP1 - Pulverized Coal Boiler EU 008 SP2 - Pulverized Coal Boiler EU 009 SP5 - Spreader Stoker Boiler EU 010 SP6 - Spreader Stoker Boiler EU 011 SP7 - Oil/Gas Package Boiler sv 003 SE3 - Pulverized Coal Boiler SV 004 SE4 - Spreader Stoker Boiler SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers SV 007 SP7 - Oil/Gas Package Boiler What to do Continuous Operation COMS 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 COMS must not be bypassed except in emergencies where failure to bypass would endanger human health. safety, or plant equipment. Why to do it Minn. R , subp. 1; 40 CFR Section 60.13(e) Acceptable monitor downtime includes reasonable periods as listed in Items A, B, C and D of Minn. R , subp. 2. QA Plan Required: Develop and implement a written quality assurance plan which Minn. R , subp. 1 covers each COMS. The plan shall be on site and available for inspection within 30 days after monitor certification. The plan shall contain the written procedures listed in Minn. R , subp. 1. COMS QA/QC: The owner or operator of an affected facility is subject to the performance specifications listed in 40 CFR pt. 60, Appendix B and shall operate, calibrate, and maintain each COMS according to the QA/QC procedures in Minn. R COMS Daily Calibration Drift Check: The Permittee must automatically, intrinsic to the opacity monitor. check the zero and upscale (span) calibration drifts at least once daily. The span value shall be between 60% and 80%. The optical surfaces shall be cleaned when the cumulative automatic zero compensation exceeds 4 percent opacity. Minimum procedures must include an automated method for producing a simulated zero opacity condition and an upscale opacity condition as specified in 40 CFR 60.13(d)(2). 40 CFR Section 60.13(a); Minn. R O Minn. R , subp. 2; 40 CFR Section 60.13(d)(I) regarding COMS and 60.13(d)(2) COMS Calibration Error Audit: due before end of each calendar half-year following Minn. R , subp. 3 COMS Certification Test Conduct three point calibration error audits at least 3 months apart but no greater than 8 months apart. Conduct audits in accordance with Minn. R , subp. 3. Attenuator Calibration The Permittee shall have an independent testing company Minn. R , subp. 4 conduct calibrations of each of the neutral density filters used in the calibration error audit according to the procedure in Code of Federal Regulations. Title 40, Part 60. Appendix B. Section within the time frame of opaciy stability guaranteed by the attenuator manufacturer The manufacturer's guarantee of stability shall be on site available for inspection COMS Calibration Error Audit Results Summary due 30 days after end of each Minn. R calendar quarter in which the COMS calibration error audit was completed. All COMS shall complete a minimum of one cycle of sampling and analyzing for each successive 10-second period and one cycle of data for each successive 6-minute period. COMS monitoring data: The owners or operators of all COMS shall reduce all data Minn. R to 6-minute averages. Opacity averages shall be calculated from all equally spaced consecutive 10-second (or shorter) data points in the 6-minute averaging period. Recordkeeping: The owner or operator must retain records of all COMS Minn. R 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 , subp. 1, 2 & 3; 40 CFR Section 60.13(e)(1 ); 40 CFR Section 60.13(h)

22 TABLE A: LIMITS AND OTHER REQUIREMENTS A-15 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: GP 007 Low-temperature Fabric Filters (GP009, GP010, FS001) CE 023 Fabric Filter - Low Temperature, i.e, T<180 Degrees F CE 024 Fabric Filter - Low Temperature, i.e, T <180 Degrees F CE 025 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 026 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 027 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 028 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 029 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 030 Fabric Filter - Low Temperature, i.e., T <180 Degrees F CE 031 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 032 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 033 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 034 Fabric Filter - Low Temperature, i.e., T <180 Degrees F CE 035 Fabric Filter - Low Temperature, i.e., T <180 Degrees F CE 036 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 037 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 038 Fabric Filter - Low Temperature, i.e., T<180 Degrees F EU 017 SE Plant Coal Receiving Hopper and Coneyor System with Two Transfer Points - Carter Day #1 EU 018 SE Plant Coal Receiving Hopper and Conveyor System with Three Transfer Points - Carter Day #2 EU 019 SE Plant Coal Conveyors with Six Transfer Points - F-111 Carter Day EU 020 SE Plant CFB Coal Handling - F-104 MAC EU 021 SE Plant Coal Transfer System with Three Transfer Points - F-109 EU 022 SE Plant Coal Transfer System with Three Transfer Points - F-11 O EU 023 SE Plant Limestone Bin - F-202 EU 024 SE Plant Sand Bin - F-203 EU 025 SE Plant Lime Silo EU 026 SE Plant New Ash Silo - F-106 EU 027 SE Plant New Ash Silo Vent - F-108 EU 028 SE Plant Ash Silo EU 029 SE Plant Ash Silo Breather Vent EU 030 St. Paul Plant Ash Silo EU 031 St. Paul Plant Ash Silo Breather Vent EU 040 Coal Storage Bldg Exhaust FS 001 Southeast Coal and Biomass Bunker What to do Why to do it Total Particulate Matter: greater than or equal to 99 percent control efficiency. Title I Condition to avoid classification as a major The Permittee shall operate and maintain the control equipment such that it modification under 40 CFR Section 52.21, Minn R achieves an overall control efficiency for PM of 99 percent This limit applies to each unit individually ~~ PM < 10 micron: greater than or equal to 99 percent control efficiency The Title I Condition to avoid classification as a major Permittee shall operate and maintain the control equipment such that it achieves modification under 40 CFR Section 52.21; Minn. R. an overall control efficiency for PM10 of 99 percent. This limit applies to each unit individually. Pressure Drop: greater than or equal to 2 inches of water column and less than or Title I Condition: to avoid classification as a major equal to 6 inches of water column, unless a new range is set pursuant to Minn. R. modification under 40 CFR Section 52.21; Minn. R , subp. 3, based on the values recorded during the most recent MPCA approved performance test where compliance was demonstrated.

23 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-16 05/04/15 Visible Emissions: The Permittee shall check the associated fabric filter stacks (SVO 13-SV027, SV029) for any visible emissions once each day of operation during daylight hours. During inclement weather, the Permittee shall read and record the pressure drop across the fabric filter, once each day of operation. Recordkeeping of Visible Emissions and Pressure Drop. The Permittee shall record the time and date of each visible emission inspection and pressure drop reading, and whether or not any visible emissions were observed, and whether or not the observed pressure drop was within the range specified in this permit The Permittee shall operate and maintain the fabric filter at all times that any emission unit controlled by the fabric filter is in operation. The Permittee shall document periods of non-operation of the control equipment. Title I Condition: Monitoring for Limit taken to avoid classification as a major modification under 40 CFR Section 52.21; Minn. R ; Minn. R , subp. 4 and 5 Title I Condition: Monitoring for Limit taken to avoid classification as a major modification under 40 CFR Section 52.21; Minn. R ; Minn. R , subp. 4 and 5 Title I Condition: Limit taken to avoid classification as a major modification under 40 CFR Section 52.21; Minn. R ; Minn. R , subp. 2 and Corrective Actions The Permittee shall take corrective action as soon as possible Minn. R , subp. 4, 5, and 14 if any of the following occur - visible emissions are observed; - the recorded pressure drop is outside the required operating range; or - the fabric filter or any of its components are found during the inspections to need repair. Corrective actions shall return the pressure drop to within the permitted range, eliminate visible emissions, 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 0 & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for each filter. Periodic Inspections: At least once per calendar quarter, or more frequently as Minn. R , subp. 4, 5 and 14 required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. The Permittee shall operate and maintain the fabric filter in accordance with the Minn. R , subp. 14 Operation and Maintenance (0 & M) Plan. The Permittee shall keep copies of the 0 & M Plan available onsite for use by staff and MPCA staff.

24 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-17 05/04/15 Subject Item: Associated Items: GP 008 Boilers subject to coal sampling and analysis EU 001 SG201 - Circulating Fluidized Bed Boiler EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 007 SP1 - Pulverized Coal Boiler EU 008 SP2 - Pulverized Coal Boiler EU 009 SP5 - Spreader Stoker Boiler EU 01 O SP6 - Spreader Stoker Boiler COAL SAMPLING AND ANALYSIS What to do Coal Sampling: collect coal samples according to the most recent version of ASTM D-2234 as described following. Samples collected according to this methodology for EU001 may include allowable alternate fuels. Increment Sample Frequency: Collect a sample every 2 hours from each operating boiler from the coal scale for each boiler, by cutting (sweeping) the full width of the free-falling coal stream from the scale feeder belt. Increment Sample Size: the weight of each increment sample size shall be 2 lb. Gross Sample Preparation: Combine the gross samples from each operating boiler to make a total plant gross (composite) sample each day for each steam service facility. Crush and reduce the gross sample as specified in ASTM Method D 2013, Sample Preparation, to form the sample for laboratory analysis. Coal Analysis: analyze the composite sample daily for sulfur content using ASTM D 3177, moisture content using ASTM D 3173 and as-received heating value using ASTM D-2015 or D Why to do it -----~ Minn. R , subp. 2 and Minn. R , subp. 2 and 14 Minn. R , subp. 2 and 14 Minn. R , subp. 2 and 14 Minn. R , subp. 2 and 14 --

25 ~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-18 05/04/15 Subject Item: Associated Items: ~----- EMISSION LIMITS GP 009 Coal handling operations CE 023 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 024 Fabric Filter-LowTemperature, i.e., T<180 Degrees F CE 025 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 026 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 027 Fabric Filter - Low Temperature, i..e., T <180 Degrees F CE 028 Fabric Filter - Low Temperature, i.e,, T <180 Degrees F CE 038 Fabric Filter - Low Temperature, i.e., T<180 Degrees F EU 017 SE Plant Coal Receiving Hopper and Coneyor System with Two Transfer Points - Carter Day #1 EU 018 SE Plant Coal Receiving Hopper and Conveyor System with Three Transfer Points - Carter Day #2 EU 019 SE Plant Coal Conveyors with Six Transfer Points - F-111 Carter Day EU 020 SE Plant CFB Coal Handling - F-104 MAC EU 021 SE Plant Coal Transfer System with Three Transfer Points - F-109 EU 022 SE Plant Coal Transfer System with Three Transfer Points - F-110 EU 040 Coal Storage Bldg Exhaust What to do Fugitive PM: Apply chemical binding agent during unloading and conveying of coal to stockpile. This limit applies to each unit individually. Why to do it Minn. R , subp. G, H Total Particulate Matter: less than or equal to grains/dry standard cubic foot. Minn. R , subp. G(1) This limit applies to each unit individually. Opacity: less than or equal to 20 percent opacity. This limit applies to each unit individually. POLLUTION CONTROL EQUIPMENT Minn. R , subp. G(2) Operate and maintain low temperature fabric filters (CE023-CE028) at all times Minn. R , subp. 2 and 14 that any emission unit controlled by the fabric filters is in operation in accordance with the requirements of GP007. The Permittee shall document periods of non-operation of the control equipment.

26 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-19 05/04/15 Subject Item: Associated Items: GP 010 Miscellaneous material handling operations CE 029 Fabric Filter - Low Temperature, i.e. T<180 Degrees F CE 030 Fabric Filter - Low Temperature. i e. T<180 Degrees F CE 031 Fabric Filter - Low Temperature, 1.e. T<180 Degrees F CE 032 Fabric Filter - Low Temperature. i.e. T<180 Degrees F CE 033 Fabric Filter - Low Temperature. i.e., T<1'80 Degrees F CE 034 Fabric Filter - Low Temperature. i.e., T<180 Degrees F CE 035 Fabric Filter- Low Temperature, i.e., T<180 Degrees F CE 036 Fabric Filter - Low Temperature, i.e., T<180 Degrees F CE 037 Fabric Filter - Low Temperature, i.e., T<180 Degrees F EU 023 SE Plant Limestone Bin - F-202 EU 024 SE Plant Sand Bin - F-203 EU 025 SE Plant Lime Silo EU 026 SE Plant New Ash Silo - F-106 EU 027 SE Plant New Ash Silo Vent - F-108 EU 028 SE Plant Ash Silo EU 029 SE Plant Ash Silo Breather Vent EU 030 St. Paul Plant Ash Silo EU 031 St. Paul Plant Ash Silo Breather Vent EMISSION LIMITS What to do Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot if not required to meet the less stringent limit of either Minn. R or Minn. R Applies to each emissions unit individually. Opacity: less than or equal to 20 percent opacity. Applies to each emission unit individually. OPERATING LIMITS Why to do it Minn. R , subp. 1 (A) Minn. R , subp. 1(B) Operate and maintain low temperature fabric filters (CE029-CE037) at all times Minn. R , subp. 2 and 14 that any emission unit controlled by the fabric filters is in operation in accordance with the requirements of GP007. The Permittee shall document periods of non-operation of the control equipment.

27 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-20 05/04/15 Subject Item: GP 011 Peaking Unit Generators: Pre-PSD (EU ) Associated Items: EU GEN001 - Moos Tower-Reciprocating IC Engine EU GEN002 - Moos Tower-Reciprocating IC Engine EU GEN003 - Moos Tower-Reciprocating IC Engine What to do OPERATIONAL LIMITS ~ Operating Hours. less than or equal to 300 hours/year using 12-month Rolling Sum to be calculated by the 15th day of each month This limit applies to each unit individually. EMISSION LIMITS Opacity less than or equal to 20 percent opacity once operating temperatures have been attained. This limit applies to each unit individually. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input. This limit applies to each unit individually. RECORDKEEPING REQUIREMENTS Maintain records of the hours of operation for each calendar month and a record of the 12-month rolling sum of hours of operation. Why to do it Minn. R subp. 2 Minn. R , subp. 1 Minn. R , subp. 2 Minn. R , subp. 5

28 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number A-21 05/04/15 Subject Item: Associated Items: GP 012 Peaking Unit Generators: Annual Limits to Avoid PSD EU GEN003 - Phillips-Wang Bldg-Reciprocating IC Engine EU GEN002 - Washington Ave Ramp-Reciprocating IC Engine EU GEN001 - EE/Comp Sci Bldg-Reciprocating IC Engine EU GEN001 - Basic Science-Reciprocating IC Engine EU GEN002 - Basic Science-Reciprocating IC Engine EU GEN002-4th Street Switch-Reciprocating IC Engine EU GEN003-4th Street Switch-Reciprocating IC Engine EU GEN002 - Phillips-Wang Bldg-Reciprocating IC Engine What to do Why to do it OPERATIONAL LIMITS Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum Title I Condition: to avoid classification as a major to be calculated by the 15th day of each month. This limit applies to each unit modification under 40 CFR Section 52.21, Minn. R. individually EMISSION LIMITS Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. This limit applies to each unit individually. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input. This limit Minn. R , subp. 2 applies to each unit individually. RECORDKEEPING REQUIREMENTS Maintain records of the hours of operation for each calendar month and a record of Title I Condition: to avoid classification as a major the 12-month rolling sum of hours of operation. modification under 40 CFR Section 52.21; Minn. R Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Minn. R , subps. 4 & 5 receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight. Records shall be maintained for 5 years.

29 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-22 05/04/15 Subject Item: Associated Items: GP 013 Emergency Generators: Part of Netting EU GEN001 - RR Weis Art Museum-Reciprocating IC Engine EU GEN001 - Aquaculture-Reciprocating IC Engine EU GEN001 - Williams Arena EU GEN001 - Lions Research Center-Reciprocating IC Engine EU GEN001 - Hockey Arena-Reciprocating IC Engine EU GEN001 - IWMF-Reciprocating IC Engine EU GEN001 - Magnetic Resonance Facility-Reciprocating IC Engine EU GEN001 - Middlebrook Hall-Reciprocating IC Engine EU GEN001-19th Ave Parking Ramp-Reciprocating IC Engine EU GEN001 - Carlson School-Reciprocating IC Engine EU GEN002 - Cancer Center-Reciprocating IC Engine What to do Why to do it - EMISSION LIMITS ~ Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. This limit applies to each unit ind1v1dually > Sulfur Dioxide less than or equal to 0.5 lbs/million Btu heat input This limit Minn. R , subp. 2 applies to each unit individually. OPERATING CONDITIONS Fuel type: Natural gas/propane/no. 2 fuel oil only. Use a fuel type limit if you are basing compliance with the S02 standards on the sulfur content of the fuel. Minn. R , subp_ 35a Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum Title I Condition: Limit to avoid classification as a to be calculated by the 15th day of each month. Applies to each unit individually. major modification under 40 CFR Section and 40 CFR Section 51, Appenidix S; Minn. R , subp. 5 RECORDINGKEEPING REQUIREMENTS Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Minn. R , subps. 4 & 5 receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight. Records shall be maintained for 5 years.

30 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-23 05/04/15 Subject Item: Associated Items: GP 014 Boilers: Part of Netting EU B Magnetic Resonance Boiler EU B Magnetic Resonance Boiler EU B Ag Chemical Building-Boiler EU B Ag Chemical Building-Boiler EU B Magnetic Resonance Boiler EU B IWMF-Boiler EU B IWMF-Boiler EU B Lions Research Center-Boiler EU B Lions Research Center-Boiler EU B Lions Research Center-Boiler EMISSION LIMITS What to do Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input. limit applies to each unit individually. Sulfur Dioxide: less than or equal to 1.6 lbs/million Btu heat input. This limit applies to each unit individually. Opacity: less than or equal to 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. This limit applies to each unit individually. OPERATING CONDITIONS Fuel type: Natural gas only - Operating Hours: less than or equal to 5840 hours/year using 12-month Rolling Sum to be calculated by the 15th day of each month. RECORDINGKEEPING REQUIREMENTS This Maintain records of the hours of operation for each calendar month and a record of the 12-month rolling sum of hours of operation. Why to do it Minn. R , subp. 1 Minn. R , subp. 1 Minn. R , subp. 2 Minn R , subp 35a Title I Condition Limit to avoid classification as a major modification under 40 CFR Section and 40 CFR Section 51, Appenidix S; Minn. R , subp. 5 Title I Condition: to avoid classification as a major modification under 40 CFR Section 52.21; Minn. R

31 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-24 05/04/15 Subject Item: Associated Items: GP 015 Emergency Generators EU GEN001 - MCB-Reciprocating IC Engine EU GEN002 - Translation Research-Reciprocating IC Engine EU GEN001 - Walter Library-Reciprocating IC Engine EU GEN001 - East River Ramp-Reciprocating IC Engine EU GEN001 - Phillips-Wang Bldg-Reciprocating IC Engine EU GEN002 - Phillips-Wang Bldg-Reciprocating IC Engine EU GEN001 - East River Ramp-Reciprocating IC Engine EU GEN001 - Archive EU GEN001 - MLAC EU GEN001 - MALG Facility EU GEN001 - Cargill Building - Microbial & Plant Genomics EU GEN001 - Plant Growth EU 146 Hanson Hall Generator-Reciprocating IC Engine EU 147 New 717 Delaware Generator-Reciprocating IC Engine EU 148 Existing 717 Delaware Generator-Reciprocating IC Engine EU 149 Northrop Auditorium Generator-Reciprocating IC Engine EU 150 TCF Stadium Generator-Reciprocating IC Engine EU 151 MBB Generator-Reciprocating IC Engine EU kw Portable Generator-Reciprocating IC Engine EU 153 STSS Center Generator-Reciprocating IC Engine EU 154 Cancer/Cardio Emergency Generator 1-Reciprocating IC Engine EU 158 Ambulatory Care Clinic Generator 1-Reciprocating IC Engine EU 159 Amublatory Care Clinic Generator 2-Reciprotcating IC Engine EU 160 MRF Generator-Reciprocating IC Engine EU 163 Main Plant Reciprocating IC Engine What to do These requirements apply separately to each unit listed in GP 015 unless otherwise noted. Why to do it Emergency generators modified or reconstructed after July 11, 2005, or 40 CFR Section (a)(2) & (3); Minn. R. manufactured after April 1, 2006 are subject to 40 CFR pt. 60, subp These additional requirements are listed in GP 016, GP 017, and EU 163 depending on the specifications and model year of the emergency generator. Emergency generators located at an area source of HAPS are subject to 40 CFR 40 CFR Section ; Minn. R pt. 63, subp. ZZZZ. These additional requirements are listed in GP 016 and GP 017 depending on the specifications and model year of the emergency generator. EMISSION LIMITS Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input heat input. Minn. R , subp. 2 OPERATING LIMITS Fuel type: Natural gas or No. 2 fuel oil/diesel fuel meeting the requirements of 40 CFR Section (c) only. Sulfur Content of Fuel less than or equal to 15 parts per million for NR diesel fuel. Cetane index or aromatic content (i) a minimum cetane index of 40. or (ii) a maximum aromatic content of 35 volume percent RECORDKEEPING REQUIREMENTS Minn. R , subp. 35a 40 CFR Section (c); Minn. R , subp 35a

32 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-25 05/04/15 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. The Permittee shall keep records of fuel type and usage on a monthly basis. Minn. R , subps. 4 & 5 Minn. R , subp. 5

33 TABLE A: LIMITS AND OTHER REQUIREMENTS A-26 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: GP 016 Emergency Generators: model year 2011 or later, Tier II EU 153 STSS Center Generator-Reciprocating IC Engine EU 154 Cancer/Cardio Emergency Generator 1-Reciprocating IC Engine EU 158 Ambulatory Care Clinic Generator 1-Reciprocating IC Engine EU 159 Amublatory Care Clinic Generator 2-Reciprotcating IC Engine EU 160 MRF Generator-Reciprocating IC Engine What to do These requirements apply to each unit listed in GP 016 unless otherwise noted. 40 CFR PT. 63, SUBP. ZZZZ REQUIREMENTS Why to do it EU 153, EU 154, EU 158, EU 159, and EU 160 are new affected sources as 40 CFR Section (c); Minn. R defined under 40 CFR pt. 63, subp. ZZZZ, and the facility is an area source as defined at 40 CFR Section The Permittee shall meet the requirements of 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp No further requirements of 40 CFR pt. 63, subp. ZZZZ apply to EU 153, EU 154, EU 158, EU 159, and EU 160. i CFR PT. 60. SUBP REQUIREMENTS EMISSION LIMITS Exhaust opacity from compression-ignition non road engines for which this subpart is applicable must not exceed: (1) 20 percent during the acceleration mode; (2) 15 percent during the lugging mode; and (3) 50 percent during the peaks in either the acceleration or lugging modes. Carbon Monoxide: less than or equal to 3.5 grams/kilowatt-hour NMHC+NOx: less than or equal to 6.4 grams/kilowatt-hour Total Particulate Matter: less than or equal to 0.20 grams/kilowatt-hour 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R Owners and operators of stationary Cl ICE must operate and maintain stationary 40 CFR Section ; 40 CFR Section (c); Cl ICE that achieves these emission standards over the entire life of the engine. Minn. R ; Minn. R OPERATING LIMITS Sulfur Content of Fuel: less than or equal to 15 parts per million for NR deisel fuel. 40 CFR Section (b); 40 CFR Section Cetane index or aromatic content: O(b); 40 CFR Section (c); Minn. R (i) a minimum cetane index of 40, or ; Minn. R (ii) a maximum aromatic content of 35 volume percent The Permittee must operate and maintain the engine according to the 40 CFR Section : 40 CFR Section (a); manufacturer's written instructions or procedures developed by the Permittee that 40 CFR Section (c); Minn. R ; are approved by the engine manufacturer. over the entire life of the engine The Minn. R Permittee may only change those settings that are permitted by the manufacturer. The Permittee must also meet the requirements of 40 CFR parts 89, 94 and/or as applicable Compliance Demonstration: The Permittee must demonstrate compliance by 40 CFR Section (c); 40 CFR Section purchasing an engine certified to conform with the emission standards listed in the (c); Minn. R ; Minn. R emission limits above for the same model year and maximum engine power. The engine must be installed and configured according to manufacturer's specifications.

34 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-27 05/04/15 The Permittee must operate the emergency stationary ICE according to the requirements in 40 CFR Section (f)(2) through (3). In order for the engine to be considered an emergency stationary ICE under this 40 CFR pt. 60. subp any operation other than emergency operation. maintenance and testing, emergency demand response. and operation in non-emergency situations for 50 hours per year. as described in 40 CFR Section (f)(2) through (3). is prohibited. If the Permittee does not operate the engine according to the requirements in 40 CFR Section (f)(2) through (3). the engine will not be considered an emergency engine under 40 CFR pt. 60. subp and must meet all requirements for non-emergency engines. Operating Hours: less than or equal to 100 hours/year for any combination of the purposes specified in paragraphs 40 CFR Section (f)(2)(i) through (iii). Any operation for non-emergency situations as allowed by 40 CFR Section (f)(3) counts as part of the 100 hours per calendar year allowed by 40 CFR Section (f)(2). Emergency stationary ICE may be operated 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 ICE beyond 100 hours per calendar year. Emergency stationary ICE may be operated for emergency demand response for periods in which the Reliability Coordinator under the North American Electric Reliability Corporation (NERC) Reliability Standard EOP Capacity and Energy Emergencies (incorporated by reference, see 40 CFR Section 60.17). or other authorized entity as determined by the Reliability Coordinator, has declared an Energy Emergency Alert Level 2 as defined in the NERC Reliability Standard EOP Emergency stationary ICE may be operated for periods where there is a dev1at1on of voltage or frequency of 5 percent or greater below standard voltage or frequency. 40 CFR Section (f); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(ii); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(iii); 40 CFR Section (c): Minn. R ; Minn. R ~r Operating Hours: less than or equal to 50 hours/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 and emergency demand response provided in 40 CFR Section (f)(2). Except as provided in 40 CFR Section (f)(3)(i), the 50 hours per calendar year for non-emergency situations cannot be used for peak shaving or non-emergency demand response, or to generate income for a facility to an electric grid or otherwise supply power as part of a financial arrangement with another entity. The 50 hours per year for non-emergency situations can be used to supply power as part of a financial arrangement with another entity if all of the following conditions are met: A The engine is dispatched by the local balancing authority or local transmission and distribution system operator; B. The dispatch is intended to mitigate local transmission and/or distribution limitations so as to avert potential voltage collapse or line overloads that could lead to the interruption of power supply in a local area or region. C. The dispatch follows reliability, emergency operation or similar protocols that follow specific NERC, regional, state, public utility commission or local standards or guidelines. D. The power is provided only to the facility itself or to support the local transmission and distribution system. (continued below) 40 CFR Section (f)(3); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3)(i); 40 CFR Section (c); Minn. R ; Minn. R ! i ~ (continued from above) 40 CFR Section (f)(3)(i); 40 CFR Section E. Permittee identifies and records the entity that dispatches the engine and the (c); Minn. R Minn. R specific NERC, regional, state. public utility commission or local standards or guidelines that are being followed for dispatching the engine. The local balancing authority or local transmission and distribution system operator may keep these records on behalf of the Permittee. MONITORING REQUIREMENTS The engine shall contain a non-resettable hour meter prior to startup of engine. RECORDKEEPING REQUIREMENTS 40 CFR Section ; 40 CFR Section (c); Minn. R ; Minn. R

35 TABLE A: LIMITS AND OTHER REQUIREMENTS A-28 05/04/15 Facility Name: Permit Number: University of MN - Twin Cities The Permittee shall maintain records of the operation of the engine in emergency service that is recorded through the non-resettable hour meter. The record must include the time of operation and the reason the generator was in operation during that time. GENERAL PROVISIONS FOR NSPS CFR Section (b); 40 CFR Section (c); Minn. R ; Minn. R The Permittee shall comply with the General Provisions in 40 CFR Section 60.1 through 60.19, as applicable. General Provisions for 60. 7(a)(4) and 60. 7(b) are specified below. 40 CFR Section ; 40 CFR Pt. 60 Subp. 1111; 40 CFR Section (c); Minn. R ; Minn. R No owner or operator shall build. erect. install, or use any article. machine. 40 CFR Section 60.12; Minn. R equipment or process. the use of which conceals an emission which would,_?therwise constitute a violation of an applicable stand~i-_d._ NOTIFICATIONS (GENERAL PROVISIONS) ~ 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. RECORDKEEPING (GENERAL PROVISIONS) Recordkeeping: 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. Recordkeeping: Maintain a file of all measurements, maintenance, reports and records for at least five years. 40 CFR Section 60.7(f) specifies two years. 40 CFR Section 60.7(a)(4); Minn. R , subp CFR Section 60.7(b); Minn. R , subp. 1 Minn. R , subp. 5(C); meets requirements of 40 CFR Section 60. 7(f); Minn. R , subp. 1

36 --~ ~ TABLE A: LIMITS AND OTHER REQUIREMENTS A-29 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: GP 017 Emergency Generators: model year after April 1, 2006 and before 2011, Tier II EU 146 Hanson Hall Generator-Reciprocating IC Engine EU 147 New 717 Delaware Generator-Reciprocating IC Engine EU 150 TCF Stadium Generator-Reciprocating IC Engine EU 151 MBB Generator-Reciprocating IC Engine What to do These requirements apply to each unit listed in GP 017 unless otherwise noted. Why to do it 40 CFR PT. 63, SUBP. ZZZZ REQUIREMENTS EU 146, EU 147, EU 150, and EU 151 are new affected sources as defined under 40 CFR Section (c); Minn. R CFR pt. 63, subp. ZZZZ, and the facility is an area source as defined at 40 CFR Section The Permittee shall meet the requirements of 40 CFR pt. 63. subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp No further requirements of 40 CFR pt. 63, subp. ZZZZ apply to EU 146, EU 147. EU 150, and EU ~ CFR PT. 63, SUBP REQUIREMENTS EMISSION LIMITS Exhaust opacity from compression-ignition nonroad engines for which this subpart is applicable must not exceed: (1) 20 percent during the acceleration mode; (2) 15 percent during the lugging mode; and (3) 50 percent during the peaks in either the acceleration or lugging modes. Carbon Monoxide: less than or equal to 3.5 grams/kilowatt-hour NMHC+NOx: less than or equal to 6.4 grams/kilowatt-hour Total Particulate Matter: less than or equal to 0.20 grams/kilowatt-hour 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R. 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R Owners and operators of stationary Cl ICE must operate and maintain stationary 40 CFR Section ; 40 CFR Section (c); Cl ICE that achieves these emission standards over the entire life of the engine.. ~.!_rl_i:i.:_~011_e05;~_inn R OPERATING LIMITS ~ Sulfur Content of Fuel: less than or equal to 15 parts per million for NR de1sel fuel 40 CFR Section (b), 40 CFR Section Cetane index or aromatic content: (b) 40 CFR Section {c). Minn. R. (i) a minimum cetane index of 40, or ; Minn. R (ii) a maximum aromatic content of 35 volume percent The Permittee must operate and maintain the engine according to the 40 CFR Section ; 40 CFR Section (a); manufacturer's written instructions or procedures developed by the Permittee that 40 CFR Section (c); Minn R ; are approved by the engine manufacturer, over the entire life of the engine. The Minn. R Permittee may only change those settings that are permitted by the manufacturer. The Permittee must also meet the requirements of 40 CFR parts 89, 94 and/or 1068, as applicable. Compliance Demonstration: The Permittee must demonstrate compliance by 40 CFR Section (c); 40 CFR Section purchasing an engine certified to conform with the emission standards listed in the (c); Minn. R ; Minn. R emission limits above for the same model year and maximum engine power. The engine must be installed and configured according to manufacturer's specifications. The Permittee must operate the emergency stationary ICE according to the 40 CFR Section (f); 40 CFR Section requirements in 40 CFR Section (f)(1) through (3). In order for the engine (c); Minn. R ; Minn. R to be considered an emergency stationary ICE under this 40 CFR pt. 60, subp. 1111, any operation other than emergency operation, maintenance and testing, emergency demand response, and operation in non-emergency situations for 50 hours per year, as described in 40 CFR Section (f)(1) through (3), is prohibited. If the Permittee does not operate the engine according to the requirements in 40 CFR Section (f)(1) through (3), the engine will not be considered an emergency engine under 40 CFR pt. 60, subp and must meet all requirements for non-emergency engines.

37 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities A-30 05/04/15 Permit Number There is no time limit on the use of emergency stationary ICE in emergency situations. Operating Hours: less than or equal to 100 hours/year for any combination of the purposes specified in paragraphs 40 CFR Section (f)(2)(i) through (iii). Any operation for non-emergency situations as allowed by 40 CFR Section (f)(3) counts as part of the 100 hours per calendar year allowed by 40 CFR Section (f)(3). Emergency stationary ICE may be operated 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 ICE beyond 100 hours per calendar year. Emergency stationary ICE may be operated for emergency demand response for periods in which the Reliability Coordinator under the North American Electric Reliability Corporation (NERC) Reliability Standard EOP-002-3, Capacity and Energy Emergencies (incorporated by reference. see 40 CFR Section 60.17), or other authorized entity as determined by the Reliability Coordinator, has declared an Energy Emergency Alert Level 2 as defined in the NERC Reliability Standard EOP ~-~-- Emergency stationary ICE may be operated for periods where there 1s a deviation of voltage or frequency of 5 percent or greater below standard voltage or frequency Operating Hours: less than or equal to 50 hours/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 and emergency demand response provided in 40 CFR Section (f)(2). Except as provided in 40 CFR Section (f)(3)(i), the 50 hours per calendar year for non-emergency situations cannot be used for peak shaving or non-emergency demand response, or to generate income for a facility to an electric grid or otherwise supply power as part of a financial arrangement with another entity. The 50 hours per year for non-emergency situations can be used to supply power as part of a financial arrangement with another entity if all of the following conditions are met: A The engine is dispatched by the local balancing authority or local transmission and distribution system operator; 8. The dispatch is intended to mitigate local transmission and/or distribution limitations so as to avert potential voltage collapse or line overloads that could lead to the interruption of power supply in a local area or region. C The dispatch follows reliability, emergency operation or similar protocols that follow specific NERC, regional, state, public utility commission or local standards or guidelines. D. The power is provided only to the facility itself or to support the local transmission and distribution system. (continued below) (continued from above) E. Permittee identifies and records the entity that dispatches the engine and the specific NERC, regional, state. public utility commission or local standards or guidelines that are being followed for dispatching the engine. The local balancing authority or local transmission and distribution system operator may keep these records on behalf of the Permittee. MONITORING REQUIREMENTS 40 CFR Section (f)(1 ); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(ii); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(iii); 40 CFR Section (c); Minn. R , Minn. R CFR Section (f)(3); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3)(i); 40 CFR Section (c); Minn. R ; Minn. R The engine shall contain a non-resettable hour meter prior to startup of engine. GENERAL PROVISIONS FOR NSPS 1111 The Permittee shall comply with the General Provisions in 40 CFR Section 60.1 through 60.19, as applicable. General Provisions for 60.7(a)(4) and 60.7(b) are specified below. No owner or operator shall 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. NOTIFICATIONS (GENERAL PROVISIONS) 40 CFR Section ; 40 CFR Section (c); Minn. R ; Minn. R CFR Section ; 40 CFR Pt. 60 Subp CFR Section (c); Minn. R ; Minn. R CFR Section 60.12; Minn. R

38 -----~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-31 05/04/15 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. Recordkeeping: Maintain a file of all measurements, maintenance, reports and records for at least five years. 40 CFR Section 60.7(f) specifies two years. 40 CFR Section 60.7(a)(4); Minn. R , subp. 1 RECORDKEEPING REQUIREMENTS (GENERAL PROVISIONS) ~~ Recordkeeping Maintain records of the occurrence and duration of any startup. 40 CFR Section 60 7(b). Minn. R subp. 1 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. Minn. R , subp. 5(C); meets requirements of 40 CFR Section 60. 7(f); Minn. R , subp. 1

39 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities A-32 05/04/15 Permit Number: Subject Item: Associated Items: GP GEMS Monitoring Requirements CE 044 SCR (Selective Catalytic Reduction) CE 045 Catalytic Converter EU 161 Main Plant CHP Turbine EU 162 Main Plant CHP Duct Burner SV 093 Main Plant CHP Whattod_o ~~~~~--~~~~~--+~~~~~~~-W~hy'--to~d_o_it~~~~~~~---1 All continuous monitoring systems (CMS) required shall be subject to the 40 CFR Section 60.13(a); Minn. R provisions of performance specifications for CMS under 40 CFR pt. 60, Appendix Band, if the CMS is used to demonstrate compliance with emission limits on a continuous basis, 40 CFR pt. 60, Appendix F, unless otherwise specified in an applicable subpart or by the Administrator. All continuous monitoring systems and monitoring devices shall be installed and operational prior to conducting performance tests under 40 CFR Section Verification of operational staus shall, as a minimum, include completion of the manufacturer's written requirements or recommendations for installation, operation and calibration. Except as provided in 40 CFR Section 60.13(c)(1 ), 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. The Permittee must check the zero (or low level value between 0 and 20% of span value) and span (50 to 100% of span value) calibration drifts at least once daily in accordance with a written procedure. The zero and span must, as a minimum, be adjusted whenever either the 24-hour zero drift or the 24-hour span drift exceeds two times the limit of the applicable performance specification in 40 CFR pt. 60, Appendix B. The system must allow the amount of excess zero and span drift to be recorded and quantified whenever specified. Except for system breakdowns, repairs, calibration checks and zero and span adjustments required under 40 CFR Section 60 13(d), all continuous monitoring systems shall be in continuous operation and shall meet minimum frequency of operation requirements as follows All CMS referenced by 40 CFR Section 60.13(c) for measuring emissions. except opacity, shall complete a minimum of one cycle of operation (sampling, analyzing and data recording) for each successive 15-minute period. All continuous monitoring systems or monitoring devices shall be installed such that representative measurements of emissions or process parameters from the affected facility 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 Section 60.13(b); Minn. R CFR Section 60.13(c)(2); Minn. R CFR Section 60.13(d)(1); Minn. R CFR Section 60 13(e); Minn. R CFR Section 60.13(f); Minn. R O i) Except as provided under 40 CFR Section 60.13(h)(2)(iii), for a full operating 40 CFR Section 60.13(h)(2)(i)-(iii); Minn. R 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. ii) Except as provided under 40 CFR Section 60.13(h)(2)(iii), 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. iii) For any operating hour in which required maintenance or quality assurance activities are performed: A) If the unit operates in two or more quadrants of the hour, a minimum of two valid data points, separated by at least 15 minutes, is required to calculate the hourly average, or B) if the unit operates in only one quadrant of the hour, at least one valid data point is required to calculate the hourly average

40 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities A-33 05/04/15 Permit Number: iv) 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. v) For each full or partial operating hour, all valid data points shall be used to calculate the hourly average_ vi) Except as provided under 40 CFR Section 60.13(h)(2)(vii), 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_ vii) Permittee complying with the requirements of 40 CFR Section 60. 7(f)(1) or (2) must include any data recorded during periods of monitor breakdown or malfunction in the data averages_ viii) When specified in an applicable subpart, hourly averages for certain partial operating hours shall not be computed or included in the emission averages (e.g. hours with < 30 minutes of unit operation under 40 CFR Section 60.47b(d)). ix) 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 02 or ng/j of pollutant) 40 CFR Section 60.13(h)(2)(iv) -(vii); Minn_ R CFR Section (h)(2)(viii) -(ix); Minn. R ~ < All excess emissions shall be converted into units of the standard using the 40 CFR Section 60 13(h)(3); Minn_ R O applicable conversion procedures specified in the applicable subpart After conversion into units of the standard, the data may be rounded to the same number of significant digits used in the applicable subpart to specify the emission limit.

41 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number A-34 05/04/15 Subject Item: Associated Items: GP 019 Main CHP Turbine and Duct Burner CE 044 SCR (Selective Catalytic Reduction) CE 045 Catalytic Converter EU 161 Main Plant CHP Turbine EU 162 Main Plant CHP Duct Burner MR 004 Main CHP Fuel Flow Meter SV 093 Main Plant CHP A EMISSION LIMITS What to do Nitrogen Oxides~ less than or equal to 35.0 tons/year using 12-month Rolling Sum. For the first 12 months, after initial certification of the NOx CEMs, NOx emissions are limited as determined by the following equation: Why to do it [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R E = 35.0 x [O (N/12)] where E = NOx emissions 1n total tons N = number of months after the limit is effective f Nitrogen Oxides. less than or equal to 25 parts per million at 15 percent 02 or 150 ~useful output (1 2 lb/mwh) wti~c,<j.mb~~ti_n1_natural gas. Nitrogen Oxides less than or equal to 7 4 parts per million at 15 percent 02 or 460 ng/j of useful output (3.6 lb/mwh) while combusting ULSD oil. ~ 40 CFR Section (a) and 40 CFR pt. 60, subp KKKK, Table 1 40 CFR Section (a) and 40 CFR pt. 60, subp. KKKK, Table 1 Nitrogen Oxides: less than or equal to 4.0 parts per million at 15 percent 02 while combusting natural gas. This limit does not apply during startup, shutdown or malfunctions. Nitrogen Oxides: less than or equal to 9.0 parts per million at 15 percent 02 while combusting ULSD oil. This applies to the turbine (EU161) when the duct burner (EU162) is not in operation. This limit does not apply during startup, shutdown or malfunctions. Nitrogen Oxides: less than or equal to 6.0 parts per million at 15 percent 02 while combusting ULSD oil. This applies when both the turbine (EU161) and the duct burner (EU162) are in operation. This limit does not apply during startup, shutdown or malfunctions. Carbon Monoxide: less than or equal to 90.0 tons/year using 12-month Rolling Sum. For the first 12 months, after initial certification of the CO CEMs, CO emissions are limited as determined by the following equation: [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R E = 90.0 x [ (N/12)] where E = CO emissions in total tons N = number of months after the limit is effective Carbon Monoxide less than or equal to 20.0 parts per million at 15 percent 02 This limit does not apply during startup. shutdown or malfunctions Sulfur Dioxide: less than or equal to lbs/million Btu heat input at 15 percent oxygen Ammonia: less than or equal to 5.0 parts per million at 15 percent 02. This limit does not apply during startup, shutdown or malfunctions. B OTHER LIMITS AND REQUIREMENTS Permitted Fuel Types: Pipeline natural gas, as defined in 40 CFR Section 72.2, except that total sulfur content shall not exceed 20 grains/100 scf, or ultra-low sulfur distillate oil (ULSD) with a maximum total sulfur content not to exceed 15 parts per million, by weight. Recordkeeping - NOx Emissions: By the 15th day of each month, the Permittee shall calculate and record the tons of NOx emitted during the previous calendar month, and the tons of NOx emitted during the previous 12-month period. Separate monthly and 12-month rolling sum records shall be maintained. _.. [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R CFR Section (a)(2) [Stage 1] Title I Condition: to avoid classifiation as a major modification under 40 CFR Section and Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R

42 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities Recordkeeping - CO Emissions: By the 15th day of each month, the Permittee shall calculate and record the tons of CO emitted during the previous calendar month, and the tons of CO emitted during the previous 12-month period. A-35 05/04/15 '[Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R Separate monthly and 12-month rolling sum records shall be maintained. Recordkeeeping The Permittee shall shall maintain records verifying the use of pipeline natural gas. as defined 1n 40 CFR Section Normal business records may be utilized for this purpose. --~- Fuel Usage: less than or equal to gallons/year using 12-month Rolling Sum of ultra-low sulfur distillate oil. Recordkeeping - Fuel Oil Usage: By the end of the following operating day. the Permittee shall calculate and record the number of gallons that the turbine (EU161) and duct burner (EU162) combusted, during the previous calendar day. By the 15th day of each month, the Permittee shall calculate and record the total fuel oil usage (in gallons) for the turbine (EU161) and duct burner (EU162), for the previous calendar month and previous 12-month period. Separate daily, monthly and 12-month recordkeeping shall be maintained on-site. [Stage 1) Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn R [Stage 1) Title I Condition to avoid classification as a major modification under 40 CFR Section and Minn. R [Stage 1) Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R Control Equipment Operation: After completion of the EU161 /162 startup, the Permittee shall control NOx with selective catalytic reduction (CE 044) and the CO with a catalytic oxidizer (CE 045). The Permittee shall operate and maintain the turbine, air pollution control equipment, and monitoring equipment in a>fllanner consistent with good air pollution control practices for minimizing emissions at all times including during startup, shutdown, and malfunction. C. CEMS REQUIREMENTS FOR CO AND NOx [Stage 1) Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R CFR Section See additional, applicable CEMS Requirements in GP 005. Emissions Monitoring: The Permittee shall install, calibrate, operate and maintain NOx and 02 continuous emissions monitoring system (CEMS) in accordance with 40 CFR pt. 60. Appendix Band Appendix F Emissions Monitoring The Permittee shall install, calibrate. operate and maintain CO and 02 continuous emissions monitoring system (CEMS) in accordance with 40 CFR pt. 60, Appendix Band Appendix F. Calculation: The Permittee shall calculate valid hourly average emissions from GEMS. CO and NOx Emission Monitoring: The Permittee shall use a CO CEMS and NOx GEMS to measure CO and NOx emissions from SV 093. D. CMS REQUIREMENT Fuel Flowrate: The Permittee shall calibrate, operate, and maintain a continuous monitoring system (CMS) that records the fuel flowrate at each fuel combustion device (EU161 and EU162). CMS QA/QC: The Permittee shall follow manufacturer recommendations for preventative maintenance and periodic monitoring to ensure CMS reliability, including but not limited to annual calibrations for fuel gas flow meters. E. 02 MONITOR REQUIREMENTS QA Plan: Develop and implement a written quality assurance plan that covers the 02 Monitor. 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 unless the Commissioner gives written approval to exclude specific spare parts from the list. The Commissioner may approve requested exclusions if the Commissioner determines that it is not reasonable to keep a specific part on-site after consideration of the consequences of a malfunction of the part. the likelihood of a malfunction, the time required to obtain the part, and other pertinent factors. 02 QA/QC The Permittee is subject to the performance specifications listed in 40 CFR pt. 60, Appendix Band shall operate, calibrate. and maintain the 02 monitor 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. [Stage 1] Title I Condition: To avoid classification as a major modification under 40 CFR Section and Minn. R ; 40 CFR Section (b)(1 ); Minn. R [Stage 1] Title I Condition: To avoid classification as a major modification under 40 CFR Section and Minn. R ; Minn. R Minn. R , subps & 3 Minn. R [Stage 1] Title I Condition: to avoid classification as a major modification under 40 CFR Section and Minn. R Minn. R , subp. 4 Minn. R , subp. 4 Minn. R , subp. 4

43 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-36 05/04/15 F. MONITORING REQUIREMENTS See additional, applicable Monitoring Requirements in GP 005 and GP 018. Certification test procedure: The CO GEMS must be certified according to the appropriate performance specifications listed in Code of Federal Regulations, title 40, part 60, Appendix B. The certification test shall also be conducted in accordance with the certification test plan approved by the Commissioner. Minn. R , subp. 1 The Permittee shall conduct and complete certification testing within 90 days after the due date of the first excess emissions report required for the NOx and CO GEMS. Each NOx diluent GEMS must be installed and certified 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 Fis not required. Alternatively, a NOx diluent GEMS that is installed and certified according to 40 CFR pt. 75, Appendix A is acceptable for use. The relative accuracy test audit (RATA) of the GEMS shall be performed on a lb/mmbtu basis. 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 GEMS, 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. 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. Each watt meter, steam flow meter and pressure or temperature measurement device shall be installed, calibrated, maintained and operated according to the manufacturer's instructions ~----- The ammonia measurement device shall be installed, calibrated, maintained and operated according to the manufacturer's instructions. The ammonia measurement device shall be installed, calibrated, maintained and operated according to the manufacturer's instructions. 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 (a), (c) and (d). For the GEMS and fuel flow meters, the Permittee may, with state approval, satisfy the requirements of 40 CFR Section (e) by implementing the QA program and plan described in section 1 of 40 CFR pt. 75, Appendix B. The Permittee shall use the calculated hourly average emission rates from 40 CFR Section (f) to assess excess emissions on a 30 unit operating day rolling average basis. A "30-day rolling average NOx emissions rate" is the arithmetic average of all hourly NOx emission data in ppm or ng/j measured by the continuous emission monitoring equipment for a given day and the twenty-nine unit operating days immediately preceding that unit operating day. A new 30-day average is calculated each unit operating day as the average of all hourly NOx emissions rates for the preceding 30 unit operating days if a valid NOx emission rate is obtained for at least 75 percent of all operating hours. The Permittee shall demonstrate with a current, valid purchase contract, tariff sheet or transportation contract for the fuel that the maximum total sulfur content is less than or equal to weight percent (15 ppmw) for ultra-low sulfur distillate oil. The Permittee shall demonstrate with a current, valid purchase contract, tariff sheet or transportation contract for the fuel that the maximum total sulfur content is either 1) less than or equal to 0.05 weight percent (500 ppmw) for oil. or 2) less than or equal to 20 grains of sulfur per 100 standard cubic feet for natural gas G. PERFORMANCE TESTING REQUIREMENTS Minn. R , subp 1 40 CFR Section (a) 40 CFR Section (b). 40 CFR Section (c) 40 CFR Section (d) Minn. R Minn. R , subps. 4 & 5 40 CFR Section (e) 40 CFR Section (h); 40 CFR Section (b)(1 ) Minn. R , subp 4 40 CFR Section

44 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number University of MN - Twin Cities Within 60 days after achieving the maximum production rate, but not later than 180 days after initial startup, the initial NOx performance test required under 40 CFR Section 60.8 may be performed in the following alternative manner: 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% of 100% peak load. The ambient temperature must be greater than O degree 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. Continued c) Use the test data both to demonstrate compliance with the applicable NOx emisson limit and to provide the required reference method data for the RATA of the CEMS described under 40 CFR Section d) Compliance with the applicable emission limit is achieved if the arithmetic average of all of the NOx emission rates for the RATA runs, expressed in ppm or lb/mwh, does not exceed the emission limit. H. REPORTING REQUIREMENTS The Permittee must submit reports of excess emissions and monitor downtime. 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. The Permittee shall submit a notification of any physical or operational change which increases the emission rate: due 60 days (or as soon as practical) before the change is commenced. The Permittee shall maintain records of the occurrence and duration of any startup, shutdown or malfunction in the operation of an affected facility; any malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system (CMS) or monitoring device is inoperative. The Permittee shall submit excess emissions and monitoring systems performance report and/or summary form to the Administrator semiannually except when: more frequent reporting is required by an applicable subpart; or the Administrator on a case-by-case basis, determines that more frequent reporting is necessary. All reports shall be postmarked by the 30th day following the end of each six-month period and shall include the information in 40 CFR Section 60.7(c)(1) through (4). The summary report form shall contain the information in figure 1 of 40 CFR Section One summary report form shall be submitted for each pollutant monitored at each affected facility. A-37 05/04/15 40 CFR Section ; 40 CFR Section 60.8(a) 40 CFR Section CFR Section CFR Section 60.7(a)(4); Minn. R , subp CFR Section 60.7(b); Minn. R , subp CFR Section 60.7(c); 40 CFR Section ; Minn. R , subp CFR Section 60.7(d); Minn. R , subp. 1 If the total duration of excess emissions is less than 1 % of the total operating time and CMS downtime is less than 5% of the total operating time, only the summary report form shall be submitted. If the total duration of excess emissions is 1 % or greater of the total operating time or CMS downtime is 5% or greater of the total operating time. the summary report form and the excess emission report described in 40 CFR Section 60 7(c) shall both be submitted The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device and performance testing measurements. all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these systems or devices; and all other information required by 40 CFR pt. 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such measurements. maintenance, reports and records except as described in paragraphs (1) and (2) of 40 CFR Section 60 7(f). If notification substantially similar to that in 40 CFR Section 60.7(a) is required by any other State or local agency, sending the Administrator a copy of that notification will satisfy the requirements of 40 CFR Section 60.7(a). Individual subparts of 40 CFR pt. 60 may include specific provisions which clarify or make inapplicable the provisions set forth in this section CFR Section 60 7(f), Minn. R subp CFR Section 60. 7(g); Minn. R , subp CFR Section 60. 7(h); Minn. R , subp. 1

45 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities At all times, including periods of startup, shutdown and malfunction, the Permittee shall, to the extent possible, 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 aceptable 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. For the purpose of submitting compliance certifications or establishing whether or not a person 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 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 Section (d); Minn. R A-38 05/04/15 40 CFR Section (g); Minn. R

46 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-39 05/04/15 Subject Item: Associated Items: GP 020 Limited Use Boilers EU 004 SE3 - Pulverized Coal Boiler EU 005 SE4 - Spreader Stoker Boiler EU 007 SP1 - Pulverized Coal Boiler EU 008 SP2 - Pulverized Coal Boiler EU 009 SP5 - Spreader Stoker Boiler EU 010 SP6 - Spreader Stoker Boiler APPLICABILITY What to do Why to do it 40 CFR Section (b) Requirements under 40 CFR pt. 63, Subpart JJJJJJ: National Emission Standards for Hazardous Air Pollutants for Industrial, Commercial and Institutional Boilers Area Sources Enforcement not delegated to MPCA. OPERATIONAL REQUIREMENTS At all times, the Permittee must operate and maintain affected boilers, including associated air pollution control equipment and 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 the Permittee to make any further efforts to reduce emissions if levels required by this standard have been achieved. 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. The Permittee must have a one-time energy assessment performed by a qualified energy assessor in accordance with 40 CFR Section (b) The energy assessment must include 1) A visual inspection of the boiler system: 2) An evaluation of operating characteristics of the boiler systems. specifications of energy using systems. O&M procedures. and unusual operating constraints, 3) An inventory of major energy use systems consuming energy from affected boiler(s) which are under control of the Permittee: 4) A review of available plans. facility operation and maintenance procedures and logs, and fuel usage; 5) A list of major energy conservation measures that are within the facility's control 6) A list of the energy savings potential of the energy conservation measures identified; and 7) A comprehensive report detailing the ways to improve efficiency, the cost of specific improvements, benefits, and the time frame for recouping those investments. The Permittee shall conduct an initial tune-up by March 21, 2014 by following the procedures described in 40 CFR Section (b). The Permittee must conduct a tune-up for each boiler every 5 years as specified in 40 CFR Sections and and keep records as required in 40 CFR Section (c) to demonstrate continuous compliance. The tune-up must be conducted while burning the type of fuel (or fuels in the case of boilers that routinely burn two types of fuels at the same time) that provided the majority of the heat input to the boiler over the 12 months prior to the tune-up. The Permittee must conduct a tune-up of the boiler every 5 years no more than 61 months after the previous tune-up, to demonstrate continuous compliance as specified in (1) through (7) as follows (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, not to exceed 72 months from the previous inspection). (2)1nspect 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. (continued below) 40 CFR Section (a) 40 CFR Section (b); 40 CFR Section 63, subp jjjjjj, Table 2 40 CFR Section ; 40 CFR pt. 63, subp. JJJJJJ, Table 2 40 CFR Section (b); 40 CFR Section (a); 40 CFR Section 63, subp. JJJJJJ, Table 2 40 CFR Section (b) and (c)

47 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-40 05/04/15 (continued from above) 40 CFR Section (b) (3)1nspect 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. not to exceed 72 months from the previous inspection). Units that produce electricity for sale may delay the inspection until the first outage, not to exceed 72 months from the previous inspection. (4)0ptimize total emissions of CO This optimization should be consistent with the manufacturer's specifications, if available. and with any nitrogen oxide requirement to which the unit is subject. (continued below) (continued from above) 40 CFR Section (b) (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. (6)Maintain on-site and submit, if requested by the Administrator, a report containing the information in (i) through (iii) as follows: (i)the concentrations of CO in the effluent stream in parts per 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. (ii)a description of any corrective actions taken as a part of the tune-up of the boiler. (continued below) (continued from above) 40 CFR Section (b) (iii) The type and amount of fuel used over the 12 months prior to the tune-up of the boiler, 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 use by each unit (?)If the unit is not operating on the required date for a tune-up the tune-up must be conducted within 30 days of startup r j The standards in 40 CFR Section apply at all times the affected boilers 40 CFR Section (d) are operating, except during periods of startup and shutdown as defined in 40 CFR Section , during which time the Permittee must comply only with 40 CFR pt. 63, subp. JJJJJJ, Table 2. The Permittee must comply with the General Provisions as applicable in Table 8 of 40 CFR Section ; 40 CFR pt. 63 subp. 40 CFR pt. 63, subp. JJJJJJ. JJJJJJ, Table 8 RECORDKEEPING The Permittee must maintain the following records: 40 CFR Section (c) ( 1 )A copy of each notification and report that was submitted to comply with 40 CFR pt. 63, subp. JJJJJJ, including all documentation supporting any Initial Notification or Notification of Compliance Status that was submitted, as required by 40 CFR Section 63.1 O(b)(2)(xiv); (2)Records to document conformance with 40 CFR Sections and as specified as follows: (i)records must identify each boiler, the date of tune-up, the procedures followed for tune-up, and the manufacturer's specifications to which the boiler was tuned. (iii)for each boiler required to conduct an energy assessment, the Permittee must keep a copy of the energy assessment report. (vi) The Permittee must keep a copy of the federally enforceable permit that limits the annual capacity factor to less than or equal to 1 O percent and records of fuel use for the days the boiler is operating (continue~_b~~~l}j) r (continued from above) 40 CFR Section (c) (4)Records of the occurrence and duration of each malfunction of each boiler or of the associated air pollution control and monitoring equipment (5)Records of actions taken during periods of malfunction to minimize emissions in accordance with the general duty to minimize emissions in 40 CFR Section (a), including corrective actions to restore the malfunctioning boiler, air pollution control, or monitoring equipment to its normal or usual manner of operation. (continued below)

48 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number: A-41 05/04/15 Records must be in a form suitable and readily available for expeditious review. The Permittee must keep each record for 5 years following the date of each recorded action. The Permittee must keep each record on-site or be accessible from a central location by computer or other means that instantly provide access at the site for at least 2 years after the date of each recorded action. The Permittee may keep the records off site for the remaining 3 years. REPORTING AND NOTIFICATION REQUIREMENTS Initial Notification: due within 120 days after the source becomes subject to 40 CFR pt. 63, subp. JJJJJJ. The Permittee must prepare by March 1, and submit to the Administrator upon request, a 5 year compliance certification report for the previous 5 year period containing the information described below. The Permittee must submit the compliance report by March 15 if the Permittee had any instance described by item 3 below. ( 1 )Company name and address (2)Statement by a responsible official, with the official's name, title, phone number, address, and signature, certifying the truth, accuracy, and completeness of the notification and a statement of whether the source has complied with all the relevant standards and other requirements of 40 CFR pt. 63. subp. JJJJJJ. The notification must include the following certifications of compliance, as applicable, and signed by a responsible official: (i)"this facility complies with the requirements in 40 CFR Section to conduct a 5 year tune-up, as applicable, of each boiler... (continued below) (continued from above) 40 CFR Section (d) 40 CFR Section (a)(2) 40 CFR Section (b) 40 CFR Section (b) (ii) "This facility complies with the requirement in 40 CFR Section (d) to minimize the boiler's time spent during startup and shutdown and to conduct startups and shutdowns according to the manufacturer's recommended procedures or procedures specified for a boiler of similar design if manufacturer's recommended procedures are not available." Notification of compliance status: due 120 days after March 21, The notification must include the following certifications of compliance, as applicable and signed by a responsible official: (i)the Permittee must submit the information required in 40 CFR Section 63.9(h)(2), except the information listed in 40 CFR Section 63.9(h)(2)(i)(B), (D), (E) and (F). (continued below) (continued from above) (ii)"this facility complies with the requirements in 40 CFR Section to conduct an initial tune-up of the boiler." (iii)"this facility has had an energy assessment performed according to 40 CFR Section (c)... (vi)the notification must be submitted electronically using the Compliance and Emissions Data Reporting Interface (CEDRI) that is accessed through EPA's Central Data Exchange (COX). However, if the reporting form specific to 40 CFR pt. 63, subp. JJJJJJ is not available in CEDRI at the time that the report is due, the written Notification of Compliance Status must be submitted to the Administrator at the appropriate address listed in 40 CFR Section The Permittee must conduct a performance tune-up according to 40 CFR Section (b) and submit a signed statement in the Notification of Compliance Status report that indicates that the Permittee conducted a tune-up of the boiler. The Permittee must submit all of the notifications in 40 CFR Sections 63.'?(b); 63.8(e) and (f); 63.9(b) through (e), (g) and (h) that apply by the dates specified in those sections except as specified in 40 CFR Section (a)(2) and (4). Subpart A General Provisions Prohibited activities: 40 CFR Section (a)(4); 40 CFR (c) 40 CFR Section (a)(4); 40 CFR (c) 40 CFR Section (b) 40 CFR Section (a)(1) 40 CFR Section 63.4(a); Minn. R (1) No owner or operator subject to the provisions of 40 CFR pt. 63 shall operate any affected source in violation of the requirements of 40 CFR pt. 63. (2) No owner or operator subject to the provisions of this part shall fail to keep records, notify, report, or revise reports as required under this part.

49 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities Circumvention. No owner or operator subject to the provisions of 40 CFR pt. 63 shall 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: 40 CFR Section 63.4(b); Minn. R A-42 05/04/15 (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; (2) The use of gaseous diluents to achieve compliance with a relevant standard for visible emissions. Fragmentation after November 15, 1990 which divides ownership of an operation, within the same facility among various owners where there is no real change in control, will not affect applicability. The owner and operator must not use fragmentation or phasing of reconstruction activities (i.e., intentionally dividing reconstruction into multiple parts for purposes of avoiding new source requirements) to avoid becoming subject to new source requirements. 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 Section 63.4(c); Minn. R CFR Section 63.10(b)(1); Minn. R

50 TABLE A: LIMITS AND OTHER REQUIREMENTS A-43 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: SV 001 SG201 - CFB Boiler Associated Items: EU 001 SG201 - Circulating Fluidized Bed Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 003 Db Boilers - General and CEMS/COMS requirements EMISSION LIMITS What to do Why to do it Carbon Monoxide: less than or equal to lbs/million Btu heat input and less Minn. R than or equal to lb/hr as a 1-hr average. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. Sulfur Dioxide: less than or equal to 0.38 lbs/million Btu heat input and less than or Minn. R equal to 96.1 lb/hr as determined by a GEMS as a 1-hour average when combusting coal. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Nitrogen Oxides: less than or equal to lbs/million Btu heat input and less Minn. R than or equal to lb/hr as determined by a GEMS as a 30-day rolling average. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. PERFORMANCE TESTING Performance Test: due before end of each calendar 60 months starting 08/21/2003 Minn. R , subp. 1 (next test on or before 8/21/08) to verify emission factors for PM, PM10, CO and voe emissions within GP001. Also, to verify compliance with CO limit set within SV001. PERFORMANCE TESTING - OAT HULLS Oat Hull Performance Test: due 60 days after achieving the maximum oat hull Minn. R , subp. 1 firing rate, but no later than 180 days after initial startup of the biomass truck unloading station, biomass storage silo, and biomass transfer system to measure CO, PM, PM10, VOC, HCI. and hexane emissions, to monitor NOx and S02 emissions, and to determine fuel chlorine content for calculating HCI control efficiency ~- Oat Hull Performance Test Notification and Submittals; Minn R subp 1-4. Minn. R Performance Test Notification (written) due 30 days before Performance Test and Minn. R , subp 1-2 Performance Test Plan: due 30 days before Performance Test Performance Test Pre-Test Meeting: due 7 day before Performance Test" Performance Test Report: due 45 days after Performance Test Performance Test Report - Microfiche Copy or CD: due 105 days after Performance Test. The Notification, Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R Revised PSD Analysis based on Oat Hull Performance Test: Within 60 days of Title I Condition: Limit to avoid major modification submitting the Oat Hull Performance Test Report, the Permittee shall perform a under 40 CFR Section 52.21; Minn. R revised PSD analysis based on the results of the performance test. If the results through Minn. R of the analysis continue to demonstrate that projected actual emission do not exceed baseline actual emissions for any regulated NSR pollutant by a significant amount, the Permittee may burn oat hulls up to the tested rate and shall maintain records of the revised PSD analysis. If the results of the analysis demonstrate that a significant emissions increase would occur, the Permittee may not operate the biomass truck unloading station, biomass storage silo, and biomass transfer system without obtaining a permit amendment in compliance with Minn. R through Minn. R ALTERNATIVE BOIMASS FUEL TESTING AND SUBMITTALS Alternative Biomass Fuel Testing Authorization: The Permittee is authorized to Minn R subp. 2 conduct test burns of the following alternative biomass fuels: agricultural crops; herbs, nuts, by-products or waste; vegetable oils, by-products or waste; crop field residue or field processing by-products; shells, husks, seed, dust. screenings and other agricultural by-products; cultivated grasses or grass by-products; wood. wood waste including wood processing by-products; and leaves. Acceptable biomass fuels do not include peat, wood that has been painted, stained or pressure treated, waste oil, farm chemicals, pesticide containers. demolition waste except for wood, waste from farms from an open dump, tire derived fuels. non-agricultural industrial process wastes. animal manures and wastes. or any material meeting the definition of a hazardous waste

51 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: Permit Number: University of MN - Twin Cities Alternative Biomass Fuel Testing Restrictions: Test burns for any potential biomass fuel shall be limited to 4,000 tons, no more than 45 days of operation using the fuel. and a test period not to exceed 180 days. Alternative Biomass Fuel Testing Requirements: Test burns shall be conducted to measure CO, PM, PM10, VOC, HCI, and hexane emissions, to monitor NOx and S02 emissions, and to determine fuel chlorine content for calculating HCI control efficiency. Alternative Biomass Fuel Testing Submittals: 30 days prior to testing of a biomass fuel, the Permittee shall submit a written performance test notification and test plan. The test plan shall meet the requirements of Minn. R and shall also include the type(s) and estimated amount of biomass to be tested, 2) operating parameters and anticipated fuel mixes during testing for the boiler to be tested, 3) air pollutants that will be monitored and measured during testing, and 4) a testing schedule. Alternative Biomass Fuel Testing Notification and Submittals; Pre-Test Meeting: due 7 day before Performance Test Test Report: due 45 days after Performance Test Test Report - Microfiche Copy or CD: due 105 days after Performance Test. The Notification, Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R Minn R , subp. 2 Minn R , subp. 2 A-44 05/04/15 Minn. R , subp. 1-4; Minn. R Minn. R , subp. 1-4; Minn. R and Minn. R , subp. 1-2

52 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-45 05/04/15 Subject Item: Associated Items: SV 002 SG202/SG203 - Med/High Pressure Package Boilers EU 002 SG202 - Medium Pressure Package Boiler EU 003 SG203 - High Pressure Package Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 003 Db Boilers - General and CEMS/COMS requirements EMISSION LIMITS What to do Sulfur Dioxide: less than or equal to lbs/hour using 3-hour Block Average as determined by fuel oil vendor certification. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. This limit applies to simultaneous operation of boilers EU002 and EU003. Nitrogen Oxides: less than or equal to lbs/million Btu heat input using 30-day Rolling Average for simultaneous operation of both boilers and less than or equal to lb/hr for EU002 and less than or equal to lb/hr for EU003 for all fuels and fuel combinations as determined by GEMS (NOx GEMS required under EU002 and EU003). Minn. R Carbon Monoxide: less than or equal to lbs/million Btu heat input using Minn. R Hour Average for simultaneous operation of both boilers and less than or equal to lb/hr for EU002 and less than or equal to lb/hr for EU003 for all fuels and fuel combinations. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. PERFORMANCE TESTING/TESTING FREQUENCY Why to do it Minn. R ; most stringent limit, meets requirements of 40 CFR Section 60.44b(a) Performance Test: due before end of each calendar 60 months starting 02/03/2004 Minn. R , subp. 1 (on or before 2/3/09) to verify compliance with hourly CO limit for EU002. Performance Test: due before end of each calendar 60 months starting 02/04/2004 Minn. R , subp. 1 (on or before 2/4/09) to verify compliance with hourly CO limit for EU003. Performance Test: due before end of each calendar 60 months starting 02/03/2004 Minn. R , subp. 1 (on or before 02/03/09) for CO, voe, PM and PM10 to verify emission factors within GP001 for EU002. Performance Test: due before end of each calendar 60 months starting 02/04/2004 Minn. R , subp. 1 (on or before 2/4/09) for CO, VOC, PM and PM10 to verify emission factors within GP001 for EU003. OTHER REQUIREMENTS Compliance with Sulfur Dioxide limit: See requirements under GP001, EU002 and Recordkeeping for Minn. R EU003 that address retaining fuel oil receipts, natural gas emission factors, daily records of fuel type usage and calculation methods.

53 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-46 05/04/15 Subject Item: Associated Items: SV 003 SE3 - Pulverized Coal Boiler EU 004 SE3 - Pulverized Coal Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 005 GEMS req'd by state rule GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers EMISSION LIMITS What to do Sulfur Dioxide: less than or equal to 0.34 lbs/million Btu heat input and less than or Minn. R equal to lb/hr, as a 1-hr average when combusting coal or No. 2 fuel oil or both as determined by GEMS. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Nitrogen Oxides: less than or equal to lbs/million Btu heat input and less Minn. R than or equal to lb/hr. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act Carbon Monoxide less than or equal to lbs/million Btu heat input and less Minn. R than or equal to 5.75 lb/hr This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. PERFORMANCE TESTING Why to do it Performance Test: due before end of each calendar 60 months starting 01/26/2005 Minn. R , subp. 1 (next test on or before 1/26/10) to verify emission factors for PM, PM10, NOx, CO and VOC within GP001.

54 --~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-47 05/04/15 Subject Item: Associated Items: SV 004 SE4 - Spreader Stoker Boiler EU 005 SE4 - Spreader Stoker Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 005 GEMS req'd by state rule GP 006 COMS req'd by state rule St. Paul Plant Boilers and SE Plant Boilers EMISSION LIMITS What to do Sulfur Dioxide: less than or equal to 0.34 lbs/million Btu heat input and less than or *Minn. R equal to lb/hr, as a 1-hr average when combusting coal or No. 2 fuel oil or both with or without approved biomass as determined by GEMS. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Nitrogen Oxides: less than or equal to 0.78 lbs/million Btu heat input and less than Minn. R or equal to lb/hr. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. Carbon Monoxide: less than or equal to 0.28 lbs/million Btu heat input and less Minn. R than or equal to lb/hr. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. PERFORMANCE TESTING - Why to do it Performance Test: due before end of each calendar 60 months starting 11/16/2004 Minn. R , subp. 1 (next test on or before 11 /16/09 to verify emission factors for PM, PM10, NOx, and VOC within GP001. Performance Test: due before end of each calendar 60 months starting 11/25/2003 Minn. R , subp. 1 (next test on or before 11 /25/08) to verify emission factors for CO within GP001.

55 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-48 05/04/15 Subject Item: Associated Items: SV 005 SG231 - Med. pressure package boiler (new St. Paul boiler) EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) GP 001 New and modified boilers (annual limits to avoid mod) GP 003 Db Boilers - General and CEMS/COMS requirements EMISSION LIMITS What to do Why to do it Nitrogen Oxides: less than or equal to lbs/million Btu heat input and less Minn. R ; most stringent limit, meets than or equal to lb/bras determined by CEMS as a 30-day rolling average. requirements of 40 CFR Section 60.44b(a); Minn. R Carbon Monoxide: less than or equal to lbs/million Btu heat input and less Minn. R than or equal to lb/hr. This is a state only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. PERFORMANCE TESTING Performance Test: due before end of each calendar 60 months starting 04/08/2004 Minn. R , subp. 1 (next test on or before ) to verify emission factors for PM, PM10, CO and VOC emissions within GP001.

56 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number A-49 05/04/15 Subject Item: Associated Items: SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers EU 007 SP1 - Pulverized Coal Boiler EU 008 SP2 - Pulverized Coal Boiler EU 009 SP5 - Spreader Stoker Boiler EU 010 SP6 - Spreader Stoker Boiler GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers EMISSION LIMITS What to do Particulate Matter less than 10 microns - Ambient Air Impact Analysis based on Minn. R Performance Test: If the Performance Test demonstrates an emission rate greater than either 0.1 lb/mm Btu or 25.8 lb/hr PM10 for all boilers operating simultaneously, the Permittees shall submit a protocol for an ambient air impact dispersion model using the measured emission rate. The protocol shall be submitted by 60 days after the last performance test reports for SV006 has been received and accepted by the MPCA. The results of the dispersion model using the measured emission rate shall be submitted as specified in the protocol as approved by the MCPA. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Nitrogen Oxides: less than or equal to 0.63 lbs/million Btu heat input and less than Minn. R or equal to lb/hr when emission units EU007, EU008. EU009. and EU01 O are all operating at the maximum continuous rating; less than or equal to lb/mmbtu when only EU007 and/or EU008 are operating; less than or equal to lb/mm Btu when only EU009 and/or EU01 Oare operating. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Why to do it Sulfur Dioxide: less than or equal to 1.15 lbs/million Btu heat input and less than or Minn. R ; most stringent. meets limits set equal to lb/hr as determined by fuel sampling and analysis. This is a by Minn. R , subp. 1 state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Carbon Monoxide: Jess than or equal to 0.14 lbs/million Btu heat input and less Minn. R than or equal to 36.2 lb/hr when all 4 boilers are operating; less than or equal to 0.04 lb/mmbtu when only EU007 and/or EU008 are operating; less than or equal to lb/mm Btu when only EU009 and/or EU01 O are operating. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. OPERATIONAL LIMITS Opacity GEMS: Maintain and operate a Continuous Opacity Monitoring System Minn. R , subp. 1 (COMS). Sulfur Dioxide: See EU007, EU008, EU009, EU010 for required coal sampling and Minn. R ; Minn. R analysis requirement. PERFORMANCE TESTING ~ Performance Test: due before end of each calendar 60 months starting 01/15/2002 Minn R subp. 1 (next test on or before 1/15/07) for PM10 (to verify emission factor used in modeling analysis), NOx and CO for EU Performance Test: due before end of each calendar 36 months starting 12/04/2003 Minn R , subp. 1 (next test on or before 12/04/06) for NOx and CO for EU008. Performance Test: due before end of each calendar 60 months starting 12/04/2003 Minn. R , subp. 1 (next test on or before 12/04/08) for PM10 (to verify emission factor used in modeling analysis) for EU008. Performance Test: due before end of each calendar 36 months starting 01 /16/2002 Minn. R , subp. 1 (next test on or before 1/16/07) for PM10 (to verify emission factor used in modeling analysis) for EU009. Performance Test: due before end of each calendar 36 months starting 12/ Minn. R , subp. 1 (next test on or before 12/1 /07) for NOx for EU009. Performance Test: due before end of each calendar 60 months starting 12/03/2003 Minn. R , subp. 1 (next test on or before 12/3/08) for CO for EU009. Performance Test: due before end of each calendar 36 months starting 12/02/2003 Minn. R , subp. 1 (next test on or before 12/02/06) for NOx for EU010. Performance Test: due before end of each calendar 60 months starting 01 /17/2002 Minn. R , subp. 1 (next test on or before 1/17/07) for PM10 (to verify emission factor used in modeling analysis) for EU010.

57 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-50 05/04/15 Performance Test: due before end of each calendar 60 months starting 12/02/2003 Minn. R , subp. 1 (next test on or before 12/02/08) for CO for EU010.

58 TABLE A: LIMITS AND OTHER REQUIREMENTS A-51 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: SV 007 SP7 - Oil/Gas Package Boiler EU 011 SP? - Oil/Gas Package Boiler GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers What to do Why to do it EMISSION LIMITS ~--- Particulate Matter less than 10 microns - Ambient Air Impact Analysis based on Minn. R Performance Test: If the Performance Test demonstrates an emission rate greater than either lb/mm Btu or 5.54 lb/hr PM10, the Permittees shall submit a protocol for an ambient air impact dispersion model using the measured emission rate. The protocol shall be submitted by 60 days after the last performance test reports for SV007 has been received and accepted by the MPCA. The results of the dispersion model using the measured emission rate shall be submitted as specified in the protocol as approved by the MCPA. This is a state-only requirement and is not enforceable by the EPA Administrator and citizens under the Clean Air Act. Nitrogen Oxides: less than or equal to lbs/million Btu heat input and less Minn. R than or equal to lb/hr. This is a state-only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act Carbon Monoxide: less than or equal to 0.04 lbs/million Btu heat input and less Minn. R than or equal to 3.56 lb/hr. This is a state only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. PERFORMANCE TESTING Performance Test: due before end of each calendar 60 months starting 12/05/2003 Minn. R , subp. 1 (next test on or before 12/5/08) for PM10 and CO emissions. Performance Test: due before end of each calendar 36 months starting 12/05/2005 Minn. R , subp. 1 (next test on or before 12/5/08) for NOx emissions.

59 TABLE A: LIMITS AND OTHER REQUIREMENTS A-52 05/04/15 Facility Name: University of MN - Twin Cities Permit Number Subject Item: EU 001 SG201 - Circulating Fluidized Bed Boiler Associated Items: CE 001 Fabric Filter - High Temperature. i.e. T>250 Degrees F CE 020 Dry Limestone lniection GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 003 Db Boilers - General and CEMS/COMS requirements GP 008 Boilers subject to coal sampling and analysis SV 001 SG201 - CFB Boiler SULFUR DIOXIDE What to do Why to do it Sulfur Dioxide: less than or equal to 10% of the potential sulfur dioxide emission 40 CFR Section 60.42b(a); Minn. R rate according to the following formula: Es= (KaHa + KbHb)/(Ha+Hb) where: Es = sulfur dioxide emission limit, in lb/million Btu heat input Ka = 1.2 lb/million Btu Kb = 0.80 lb/million Btu Ha = heat input from the combustion of coal (million Btu) Hb = heat input from the combustion of oil (million Btu) Annual Capacity Factor for Fuels Other Than Coal: greater than 10%. Annual 40 CFR Section 60.43b(a)(2) and 40 CFR Section Capacity Factor shall be calculated as defined in 40 CFR pt. 60. subp. Db b; Minn. R Fuel oil sulfur limits and/or percent reduction requirements under this section are 40 CFR Section 60.42b(e); Minn. R determined on a 30-day rolling average ----~ ~---- ~ Sulfur Dioxide The Sulfur Dioxide emission limits and percent reduction 40 CFR Section 60.42b(g) and 40 CFR Section requirements apply at all times. including periods of startup. shutdown and 60.42bU); Minn. R malfunction. except that percent reduction requirements do not apply when only very low sulfur fuel oil or natural gas is combusted. and further, except that the percent reduction requirement does not apply during startup, shutdown, or malfunction when the fluidized bed temperature is below normal operating level. Sulfur Dioxide: The Permittee shall obtain and maintain at the facility fuel receipts 40 CFR Section 60.49b(r); Minn. R from the fuel supplier which certify that the fuel oil contains less than or equal to 0.5% sulfur by weight. Sulfur Dioxide Monitoring: Determine the average S02 emissions and percent 40 CFR Section 60.47b(b); Minn. R reduction by collecting coal/biomass samples in as as-fired condition at the inlet to the steam generating unit and analyzing them for sulfur and heating value according to Method 19 and the procedure specified within GP008 and measuring S02 in stack SV001 by the S02 CEMS. PARTICULATE MATIER Total Particulate Matter less than or equal to 0.10 lbs/million Btu heat input for all 40 CFR Section 60.43b(a)(2); Minn. R fuels and fuel combinations. Opacity: less than or equal to 20 percent opacity using 6-minute Average except 40 CFR Section 60.43b(f); Minn. R for one 6-minute period per hour of not more than 27 opacity. Opacity Compliance: Demonstrate compliance with opacity standards using COMS 40 CFR Section (e)(5); Minn. R , data results. subp. 2(B); Minn. R The PM and opacity standards apply at all times, except during periods of startup, 40 CFR Section 60.43b(g); Minn. R shutdown or malfunction. NITROGEN OXIDES Nitrogen Oxides less than or equal to lbs/million Btu heat input using 30-day 40 CFR Section 60 44b(a)(1 ); 40 CFR Section Rolling Average (which 1s equivalent to lb/hr at manufacturer's rated 60 44b(a)(2); Minn R capacity) when combusting only natural gas or only fuel oil

60 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name Permit Number University of MN - Twin Cities Nitrogen Oxides: less than or equal to the amount allowed by the following formula when the facility simultaneously combusts coal, oil and/or natural gas or if the facility simultaneously combusts coal or oil, or a mixture of these fuels with natural gas and approved biomass: A-53 05/04/15 40 CFR Section 60.44b(b); 40 CFR Section 60.44b(c); Minn R En = [(ELgo x Hgo)+(ELc x He)] I (Hgo+Hc) where: En = the NOx emission limit in lb/mmbtu ELgo = the emission lmit for natural gas or fuel oil, lb/mmbtu Hgo = the total heat input from natural gas or fuel oil, MMBtu/hr ELc = the emission limit for coal in lb/mmbtu He= the total heat input from coal, MMBtu/hr Nitrogen Oxides: The nitrogen oxides standards apply at all times including periods of startup, shutdown and malfunction. Nitrogen Oxides: emission rate shall be determined by the NOx CEMS as a 30-day rolling average. OPERATIONAL LIMITS Startup Fuel: Natural gas only except that No. 2 fuel oil may be used when natural gas is curtailed. No. 2 fuel oil may be used up to 15% of the maximum heat input (40 MMBtu/hr) for startup only. Fuel type: Bituminious and Subbituminous Coal, approved biomass. approved biomass mixed with coal, approved biomass mixed with natural gas. and natural gas No. 2 fuel oil for startup only as stated above. Approved Biomass Approved biomass includes wood (as limited below) and oat hulls. Alternative biomass may be fired during test burns in compliance with all permit conditions. Treated wood and wood waste materials prohibited as fuel: No wood or wood waste which meets the definition of hazardous waste may be used as fuel. No owner or operator shall 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. PERFORMANCE TESTING See SV001 requirements. CEMS REQUIREMENTS 40 CFR Section 60.44b(h); Minn. R CFR Section 60.43b(i); Minn. R Minn. R Minn. R , subp. 35a Title I Condition: Limit to avoid major modification under 40 CFR Section Minn. R , subp CFR Section 60.12; Minn. R Minn. R , subp. 1 Opacity CEMS: The owner or operator shall install, calibrate, maintain, and operate a continuous opacity monitoring system (COMS). Subpart Db COMS requirements are contained in GP003 of the permit. Sulfur Dioxide CEMS: The Permittee shall install, calibrate, maintain and operate continuous emission monitoring systems (CEMS) for measuring S02 concentrations and either Oxygen (2) or Carbon Dioxide (C02) concentrations. Subp. Db CEMS requirements are contained in GP003 of this permit. Nitrogen Oxide CEMS: The Permittee shall install. calibrate. maintain and operate a continuous monitoring system for measuring NOx. Subpart Db CEMS requirements are contained in GP003 of this permit. POLLUTION CONTROL EQUIPMENT CFR Section 60.48b(a) 40 CFR Section 60.47b(a) 40 CFR Section 60.48b(b) - Operate the associated bag house fabric filter (CE001) whenever unit is operational according to the requirements in CE001. Minn. R , subp. 2 and 14 RECORDKEEPING Recordkeeping: For each emission unit, maintain records of the type and amount of fuel combusted each day; calculate the annual capacity factor for each fuel for each calendar quarter. Recordkeeping: Maintain a file of all measurements. maintenance, reports and records for at least five years. Records of Startup, Shutdown, or Malfunction: Any owner or operator subject to the provisions of this part shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; any malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. NOTIFICATIONS 40 CFR Section 60.49b(d); Minn R CFR Section 60.7(f); Minn. R , subp CFR Section 60.7(b); Minn. R , subp. 1

61 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-54 05/04/15 Notification of Anticipated Date for Conducting Opacity Observations: due 30 day prior to observation date Notification of any physical or operational change which increases emission rate: due 60 days (or as soon as practical) before the change is commenced, unless specifically exempted under an applicable subpart or in section 60.14(e). OAT HULL INFORMATION Oat Hull Performance Test: due 60 days after achieving the maximum oat hull firing rate, but no later than 180 days after initial startup of the biomass truck unloading station, biomass storage silo, and biomass transfer system to measure CO, PM, PM10, VOC, HCI, and hexane emissions, to monitor NOx and S02 emissions, and to determine fuel chlorine content for calculating HCI control efficiency. Oat Hull Performance Test Notification and Submittals; Performance Test Notification (written): due 30 days before Performance Test Performance Test Plan: due 30 days before Performance Test Performance Test Pre-Test Meeting due 7 day before Performance Test Performance Test Report: due 45 days after Performance Test Performance Test Report - Microfiche Copy or CD due 105 days after Performance Test. The Notification. Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R Revised PSD Analysis based on Oat Hull Performance Test: Within 60 days of submitting the Oat Hull Performance Test Report, the Permittee shall perform a revised PSD analysis based on the results of the performance test. If the results of the analysis continue to demonstrate that projected actual emission do not exceed baseline actual emissions for any regulated NSR pollutant by a significant amount, the Permittee may burn oat hulls up to the tested rate and shall maintain records of the revised PSD analysis. If the results of the analysis demonstrate that a significant emissions increase would occur, the Permittee may not operate the biomass truck unloading station, biomass storage silo, and biomass transfer system without obtaining a permit amendment in compliance with Minn. R through Minn. R Alternative Biomass Fuel Testing Authorization: The Permittee is authorized to conduct test burns of the following alternative biomass fuels: agricultural crops; herbs, nuts, by-products or waste; vegetable oils, by-products or waste; crop field residue or field processing by-products; shells, husks, seed, dust, screenings and other agricultural by-products; cultivated grasses or grass by-products; wood, wood waste including wood processing by-products; and leaves. Acceptable biomass fuels do not include peat, wood that has been painted, stained or pressure treated, waste oil, farm chemicals, pesticide containers, demolition waste except for wood, waste from farms from an open dump, tire derived fuels, non-agricultural industrial process wastes. animal manures and wastes, or any material meeting the definition of a hazardous waste. Alternative Biomass Fuel Testing Restrictions. Test burns for any potential biomass fuel shall be limited to tons. no more than 45 days of operation using the fuel, and a test period not to exceed 180 days. -- Alternative Biomass Fuel Testing Requirements Test burns shall be conducted to measure CO, PM, PM10, VOC, HCI, and hexane emissions. to monitor NOx and 802 emissions, and to determine fuel chlorine content for calculating HCI control efficiency. Alternative Biomass Fuel Testing Submittals: 30 days prior to testing of a biomass fuel, the Permittee shall submit a written performance test notification and test plan. The test plan shall meet the requirements of Minn. R and shall also include the type(s) and estimated amount of biomass to be tested, 2) operating parameters and anticipated fuel mixes during testing for the boiler to be tested, 3) air pollutants that will be monitored and measured during testing, and 4) a testing schedule. Alternative Biomass Fuel Testing Notification and Submittals; Pre-Test Meeting: due 7 day before Performance Test Test Report: due 45 days after Performance Test Test Report - Microfiche Copy or CD: due 105 days after Performance Test. The Notification, Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R CFR Section 60.7(a)(4); Minn. R , subp CFR Section 60.7(a)(4); Minn. R , subp. 1 Minn. R , subp. 1 Minn. R , subp. 1-4; Minn. R and Minn. R , subp. 1-2 Title I Condition: Limit to avoid major modification under 40 CFR Section 52.21; Minn. R through Minn. R Minn R , subp. 2 Minn R , subp. 2 Minn R , subp. 2 Minn. R , subp. 1-4; Minn. R Minn. R , subp. 1-4; Minn. R and Minn. R , subp. 1-2

62 ----- TABLE A: LIMITS AND OTHER REQUIREMENTS A-55 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 002 SG202 Medium Pressure Package Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 003 Db Boilers - General and CEMS/COMS requirements SV 002 SG202/SG203 - Med/High Pressure Package Boilers What to do Why to do it ~----- EMISSION LIMITS ~ Opacity: less than or equal to 20 percent opacity using 6-minute Average except 40 CFR Section 60.43b(f) for one 6-minute period per hour of not more than 27 opacity. -~ Nitrogen Oxides: less than or equal to 0.20 lbs/million Btu heat input using 30-day 40 CFR Section 60.44b(a); Minn. R Rolling Average as determined by GEMS. Please note the NOx limit at SV002 for EU002 and EU003 which is more restrictive. OPERATIONAL LIMITS Fuel type: Natural gas or No. 2 fuel oil only. Sulfur Dioxide: less than or equal to 0.5 percent by weight sulfur in fuel oil; percent reduction requirement of 40 CFR Section 60.42b(a) does not apply to this emission unit. Minn. R , subp. 35a 40 CFR Section 60.42bU); most stringent, meets limit set by 40 CFR Section 60.42b(a) for fuel oil Sulfur Dioxide: The Permittee shall obtain and maintain at the facility fuel receipts 40 CFR Section 60.49b(r); Minn. R from the fuel supplier for each shipment which certify that the fuel oil contains less than or equal to 0.5% sulfur by weight. The opacity standards apply at all times, except during periods of startup, shutdown or malfunction. Opacity GEMS: The owner or operator shall install, calibrate, maintain, and operate a continuous opacity monitoring system (COMS). 40 CFR Section 60.43b(g) 40 CFR Section 60.48b(a) Opacity Compliance: Demonstrate compliance with opacity standards using COMS 40 CFR Section (e)(5); Minn. R , data results. subp. 2(B) Nitrogen Oxides GEMS: The owner or operator shall install, calibrate, maintain, 40 CFR Section 60.48b(b) and operate a continous monitoring system for NOx Nitrogen Oxides The NOx standards apply at all times including periods of 40 CFR Section 60.44b(h) startup, shutdown, and malfuntion ~-~~ Nitrogen Oxides: emission rate shall be determined by the NOx GEMS as a 40 CFR Section 60 43b(1): Minn R day rolling average ~ RECORDKEEPING Recordkeeping: For each emission unit, maintain records of the type and amount 40 CFR Section 60.49b(d); Minn. R of fuel combusted each day; calculate the annual capacity factor for each fuel for each calendar quarter. Records of Startup, Shutdown, or Malfunction: Any owner or operator subject to 40 CFR Section 60.7(b); Minn. R , subp. 1 the provisions of this part shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; a_ny malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. Recordkeeping: Maintain a file of all measurements, maintenance, reports and 40 CFR Section 60.7(f); Minn. R , subp. 1 records for at least five years. NOTIFICATIONS Notification of Anticipated Date for Conducting Opacity Observations: due 30 days 40 CFR Section 60.7(a)(4); Minn. R , subp. prior to observation date 1 Notification of any physical or operational change which increases emission rate: 40 CFR Section 60.7(a)(4); Minn. R , subp. due 60 days (or as soon as practical) before the change is commenced, unless 1 specifically exempted under an applicable subpart or in section 60.14(e). No owner or operator shall build, erect, install, or use any article, machine, 40 CFR Section 60.12; Minn. R equipment or process, the use of which conceals an emission which would otherwise constitute a violation of an applicable standard. PERFORMANCE TESTING ~---- See SV002 requirements. Minn. R , subp ~----

63 TABLE A: LIMITS AND OTHER REQUIREMENTS A-56 05/04/15 Facility Name: University of MN - Twin Cities Permit Number Subject Item: Associated Items: EU 003 SG203 - High Pressure Package Boiler GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 003 Db Boilers - General and CEMS/COMS requirements SV 002 SG202/SG203 - Med/High Pressure Package Boilers EMISSION LIMITS What to do Why to do it Opacity: less than or equal to 20 percent opacity using 6-minute Average except for one 6-minute period per hour of not more than 27 opacity. 40 CFR Section 60.43b(f) Nitrogen Oxides: less than or equal to 0.20 lbs/million Btu heat input using 30-day 40 CFR Section 60.44b(a); Minn. R Rolling Average as determined by CEMS. Please note the NOx limit at SV002 for EU002 and EU003 which is more restrictive. OPERATIONAL LIMITS Fuel type: Natural gas or No. 2 fuel oil only. Minn. R , subp. 35a Sulfur Dioxide: less than or equal to 0.5 percent by weight sulfur in fuel oil; percent reduction requirement of 40 CFR Section 60.42b(a) does not apply to this emission unit. 40 CFR Section 60.42bUJ; most stringent, meets limit set by 40 CFR Section 60.42b(a) for fuel oil Sulfur Dioxide: The Permittee shall obtain and maintain at the facility fuel receipts 40 CFR Section 60.49b(r); Minn. R from the fuel supplier for each shipment which certify that the fuel oil contains less than or equal to 0.5% sulfur by weight. The opacity standards apply at all times, except during periods of startup, shutdown or malfunction. Opacity CEMS The owner or operator shall install. calibrate. maintain, and operate a continuous opacity monitoring system (COMS) 40 CFR Section 60.43b(g) 40 CFR Section 60.48b(a) Opacity Compliance Demonstrate compliance with opacity standards using COMS 40 CFR Section (e)(5); Minn. R data results. subp. 2(8) Nitrogen Oxides CEMS The owner or operator shall install. calibrate. maintain. 40 CFR Section 60.48b(b) and operate a continous monitoring system for NOx. Nitrogen Oxides: The NOx standards apply at all times including periods of startup, shutdown, and malfuntion. 40 CFR Section 60.44b(h) Nitrogen Oxides: emission rate shall be determined by the NOx CEMS as a 40 CFR Section 60.43b(i); Minn. R day rolling average. RECORDKEEPING Record keeping: For each emission unit, maintain records of the type and amount 40 CFR Section 60.49b(d); Minn. R of fuel combusted each day; calculate the annual capacity factor for each fuel for each calendar quarter. Records of Startup, Shutdown, or Malfunction: Any owner or operator subject to 40 CFR Section 60.7(b); Minn. R , subp. 1 the provisions of this part shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; any - malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. Recordkeeping: Maintain a file of all measurements, maintenance, reports and 40 CFR Section 60 7(f); Minn. R , subp. 1 records for at least five years. NOTIFICATIONS Notification of Anticipated Date for Conducting Opacity Observations: due 30 days 40 CFR Section 60.7(a)(4); Minn. R , subp. prior to observation date 1 Notification of any physical or operational change which increases emission rate 40 CFR Section 60. 7(a)(4); Minn. R , subp. due 60 days (or as soon as practical) before the change is commenced, unless 1 specifically exempted under an applicable subpart or in section 60 14(e) No owner or operator shall build. erect. install. or use any article, machine. 40 CFR Section 60.12; Minn. R equipment or process. the use of which conceals an emission which would otherwise constitute a violation of an applicable standard. PERFORMANCE TESTING See SV002 requirements. Minn. R , subp. 1

64 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number A-57 05/04/15 Subject Item: Associated Items: EU 004 SE3 - Pulverized Coal Boiler CE 002 Fabric Filter - Medium Temperature i.e., 180 F<T<250 F CE 003 Gas Scrubber (General, Not Classified) GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 005 CEMS req'd by state rule GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 003 SE3 - Pulverized Coal Boiler EMISSION LIMITS What to do Why to do it Sulfur Dioxide: less than or equal to 3.0 lbs/million Btu heat input when combusting Minn. R , subp. 1 solid fuels only. See next requirement for S02 limit when simultaneously combusting solid and liquid fuels. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 1 when the facility simultaneously combusts coal and/or oil: Ex= [(ELo x Ho)+(ELc x He)] I (Ho+Hc) where: Es = the S02 emission limit in lb/mmbtu ELo = the emission limit for fuel oil Ho = the total heat input from fuel oil, MMBtu/hr ELc =the emission limit for coal He = the total heat input from coal Sulfur Dioxide: less than or equal to 1.6 lbs/million Btu heat input when combusting Minn. R , subp. 1 liquid fuels only. Total Particulate Matter: less than or equal to 0.1 lbs/million Btu heat input Minn. R , subp. 2, more stringent than Minn. R , subp. 1, referencing Minn. R Opacity: less than or equal to 20 percent opacity, except for one six-minute period Minn. R , subp. 2, more stringent than per hour of not more than 33% opacity. Minn. R , subp. 1, referencing Minn. R OPERATIONAL LIMITS Upon the commencement of commercial operation of the Main Plant Combined Minn. R , subp. 2 Heating Plant's turbine and duct burner, EU 004 shall be retired. Fuel type: Subbituminous and bituminous coal, No. 2 fuel oil and natural gas only. Minn. R , subp. 35a Boiler annual capacity: less than or equal to 148,044 MMBtu/year using a Minn. R , subp. 2; 40 CFR 12-month rolling sum, to be calculated by the 15th of each month for the previous (c)(2)(vi) 12 month period Opacity CEMS: The owner or operator shall maintain and operate a COMS to Minn. R measure opacity emissions from the emission unit. Sulfur Dioxide CEMS: Maintain and operate CEMS for S02 and diluent oxygen Minn. R after the dry scrubber. POLLUTION CONTROL EQUIPMENT Operate CE002 (med. temp fabric filter) and CE003 (gas scrubber). The Permittee Minn. R , subp. 2 and 14 shall operate and maintain the fabric filter and the gas scrubber at all times that any emission unit controlled by the fabric filter and the gas scrubber is in operation in accordance with the requirements of CE002 and CE003, respectively. PERFORMANCE TESTING See SV003 requirements. Minn. R , subp. 1 RECORDKEEPING Daily Recordkeeping: The Permittee shall record the daily amount of fuel combusted in the boiler and heating value of the fuel for the previous operating day. Minn. R , subps. 4 and 5; 40 CFR (c)(2)(vi)

65 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-58 05/04/15 Daily Recordkeeping: The Permittee shall calculate and record the daily total heat Minn. R , subp. 5 input (MMBtu) using the higher heating value and the quantity of each fuel combusted for the previous operating day.

66 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-59 05/04/15 Subject Item: Associated Items: EU 005 SE4 - Spreader Stoker Boiler CE 004 Fabric Filter - Medium Temperature i.e., 180 F<T<250 F CE 005 Gas Scrubber (General, Not Classified) GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 005 CEMS req'd by state rule GP 006 COMS req'd by state rule St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 004 SE4 - Spreader Stoker Boiler EMISSION LIMITS What to do Why to do it Sulfur Dioxide: less than or equal to 3.0 lbs/million Btu heat input when combusting Minn. R , subp. 1 solid fuels only. See next requirement for S02 limit when simultaneously combusting solid and liquid fuels. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 1 when the facility simultaneously combusts coal and/or oil (with or without approved biomass): Ex= [(ELo x Ho)+(ELc x He)] I (Ho+Hc) where: Es = the S02 emission limit in lb/mmbtu ELo = the emission limit for fuel oil Ho =the total heat input from fuel oil, MMBtu/hr ELc = the emission limit for coal He = the total heat input from coal Sulfur Dioxide: less than or equal to 1.6 lbs/million Btu heat input when combusting Minn. R , subp. 1 liquid fuels only. Total Particulate Matter: Jess than or equal to 0 1 lbs/million Btu heat input Minn. R , subp. 2, more stringent than Minn R , subp. 1, referencing Minn R r Opacity: less than or equal to 20 percent opacity. except for one six-minute period Minn R subp 2, more stringent than per hour of not more than 33% opacity. Minn. R , subp. 1. referencing Minn. R ~ OPERATIONAL LIMITS Upon the commencement of commercial operation of the Main Plant Combined Minn. R subp. 2 Heating Plant's turbine and duct burner, EU 005 shall be retired. Fuel type: Subbituminous and Bituminous Coal, No. 2 fuel oil, natural gas and approved biomass mixed with coal only. Approved biomass is defined below. Minn. R , subp. 35a Approved Biomass: Approved biomass includes oat hulls. Alternative biomass *Title I Condition: Limit to avoid major modification may be fired during test burns in compliance with all permit conditions. under 40 CFR Section Boiler annual capacity: less than or equal to 163,812 MMBtu/year using a 12-month rolling sum, to be calculated by the 15th of each month for the previous 12 month period. Minn. R , subp. 2; 40 CFR (c)(2)(vi) Opacity CEMS: The owner or operator shall maintain and operate a COMS to Minn. R measure opacity emissions from the emission unit. Sulfur Dioxide CEMS: Maintain and operate CEMS for S02 and diluent oxygen Minn. R after the dry scrubber. POLLUTION CONTROL EQUIPMENT Operate CE004 (med. temp fabric filter) and CE005 (gas scrubber). The Permittee Minn. R , subp. 2 and 14 shall operate and maintain the fabric filter and the gas scrubber at all times that any emission unit controlled by the fabric filter and the gas scrubber is in operation in accordance with the requirements of CE004 and CE005, respectively. PERFORMANCE TESTING ~I- See SV004 requirements. Minn R , subp OAT HULL INFORMATION

67 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number A-60 05/04/15 Oat Hull Performance Test due 60 days after achieving the maximum oat hull firing rate. but no later than 180 days after initial startup of the biomass truck unloading station, biomass storage silo. and biomass transfer system to measure CO, PM, PM10, VOC, HCI. and hexane emissions, to monitor NOx and 502 emissions, and to determine fuel chlorine content for calculating HCI control efficiency. Oat Hull Performance Test Notification and Submittals; Performance Test Notification (written): due 30 days before Performance Test Performance Test Plan: due 30 days before Performance Test Performance Test Pre-Test Meeting: due 7 day before Performance Test Performance Test Report: due 45 days after Performance Test Performance Test Report - Microfiche Copy or CD: due 105 days after Performance Test. The Notification, Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R Revised PSD Analysis based on Oat Hull Performance Test: Within 60 days of submitting the Oat Hull Performance Test Report, the Permittee shall perform a revised PSD analysis based on the results of the performance test. If the results of the analysis continue to demonstrate that projected actual emission do not exceed baseline actual emissions for any regulated NSR pollutant by a significant amount, the Permittee may burn oat hulls up to the tested rate and shall maintain records of the revised PSD analysis. If the results of the analysis demonstrate that a significant emissions increase would occur, the Permittee may not operate the biomass truck unloading station, biomass storage silo, and biomass transfer system without obtaining a permit amendment in compliance with Minn. R through Minn. R Alternative Biomass Fuel Testing Authorization The Permittee is authorized to conduct test burns of the following alternative biomass fuels agricultural crops; herbs. nuts. by-products or waste: vegetable oils. by-products or waste; crop field residue or field processing by-products: shells. husks. seed. dust. screenings and other agricultural by-products; cultivated grasses or grass by-products: wood. wood waste including wood processing by-products and leaves. Acceptable biomass fuels do not include peat. wood that has been painted. stained or pressure treated, waste oil, farm chemicals, pesticide containers, demolition waste except for wood, waste from farms from an open dump, tire derived fuels, non-agricultural industrial process wastes, animal manures and wastes, or any material meeting the definition of a hazardous waste. Alternative Biomass Fuel Testing Restrictions: Test burns for any potential biomass fuel shall be limited to 4,000 tons, no more than 45 days of operation using the fuel, and a test period not to exceed 180 days. Alternative Biomass Fuel Testing Requirements: Test burns shall be conducted to measure CO, PM, PM10, VOC, HCI, and hexane emissions, to monitor NOx and 502 emissions, and to determine fuel chlorine content for calculating HCI control efficiency. Alternative Biomass Fuel Testing Submittals: 30 days prior to testing of a biomass fuel, the Permittee shall submit a written performance test notification and test plan. The test plan shall meet the requirements of Minn. R and shall also include the type(s) and estimated amount of biomass to be tested, 2) operating parameters and anticipated fuel mixes during testing for the boiler to be tested, 3) air pollutants that will be monitored and measured during testing, and 4) a testing schedule. Alternative Biomass Fuel Testing Notification and Submittals; Pre-Test Meeting: due 7 day before Performance Test Test Report: due 45 days after Performance Test Test Report - Microfiche Copy or CD: due 105 days after Performance Test. The Notification. Test Plan, and Test Report may be submitted in alternative format as allowed by Minn. R RECORDKEEPING Daily Recordkeeping The Permittee shall record the daily amount of fuel combusted in the boiler and heating value of the fuel for the previous operating day. _.._ Daily Recordkeeping The Permittee shall calculate and record the daily total heat input (MMBtu) using the higher heating value and the quantity of each fuel combusted for the previous operating day. Minn. R , subp 1 Minn. R , subp. 1-4; Minn. R and Minn. R , subp. 1-2 Title I Condition: Limit to avoid major modification under 40 CFR Section 52.21; Minn. R through Minn. R Minn R , subp. 2 Minn R , subp. 2 Minn R , subp. 2 Minn. R , subp. 1-4; Minn. R Minn. R , subp. 1-4; Minn. R and Minn. R , subp Minn. R , subps. 4 and 5; 40 CFR (c)(2)(vi) Minn. R , subp. 5

68 TABLE A: LIMITS AND OTHER REQUIREMENTS A-61 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 006 SG231 - Medium Pressure Package Boiler (new St. Paul boiler) GP 001 New and modified boilers (annual limits to avoid mod) GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 003 Db Boilers - General and CEMS/COMS requirements GP 004 Boilers SG231 and SP? - fuel oil usage limit SV 005 SG231 - Med. pressure package boiler (new St. Paul boiler) EMISSION LIMITS What to do Opacity: less than or equal to 20 percent opacity using 6-minute Average except for one 6-minute period per hour of not more than 27 percent opacity. 40 CFR Section 60.43b(f) Why to do it Nitrogen Oxides: less than or equal to 0.20 lbs/million Btu heat input using 30-day 40 CFR Section 60.44b(a); Minn. R Rolling Average as determined by GEMS. Please note the NOx limit at SV005 for EU006 which is more restrictive. OPERATIONAL LIMITS Sulfur Dioxide: less than or equal to 0.5 percent by weight sulfur in fuel oil; percent reduction requirement of 40 CFR Section 60.42b(a) does not apply to this emission unit. 40 CFR Section 60.42bU); most stringent, meets limit set by 40 CFR Section 60.42b(a) for fuel oil The opacity standard applies at all times, except during periods of startup. 40 CFR Section 60.43b(g) shutdown or malfunction Opacity GEMS: The owner or operator shall install. calibrate. maintain. and 40 CFR Section 60.48b(a) operate a continuous opacity monitoring system (COMS) Opacity Compliance: Demonstrate compliance with opacity standards using Reference Method CFR Section 60.11; Minn. R , subp. 2(B) Nitrogen Oxides: emission rate shall be determined by the NOx GEMS as a 40 CFR Section 60.43b(i); Minn. R day rolling average. Nitrogen Oxides: The NOx standards apply at all times including periods of startup, shutdown, and malfuntion. Nitrogen Oxides GEMS: The owner or operator shall install, calibrate, maintain.and operate a continous monitoring system for NOx. Fuel type: No. 2 fuel oil and natural gas only. RECORDKEEPING AND REPORTING 40 CFR Section 60.44b(h) 40 CFR Section 60.48b(b) Minn. R , subp. 35a Recordkeeping: For each emission unit, maintain records of the type and amount 40 CFR Section 60.49b(d); Minn. R ; Minn. of fuel combusted each day; calculate the annual capacity factor for each fuel for R , subp. 1 each calendar quarter. Recordkeeping for Sulfur Dioxide: The Permittee shall obtain and maintain at the 40 CFR Section 60.49b(r); Minn. R facility fuel receipts from the fuel supplier which certifiy that fuel oil meets the definition of very low sulfur fuel oil (less than or equal to 0.5% sulfur by weight). Records of Startup, Shutdown, or Malfunction: Any owner or operator subject to 40 CFR Section 60.?(b); Minn. R , subp. 1 the provisions of this part shall maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility; any malfunction of the air pollution control equipment; or any periods during which a continuous monitoring system or monitoring device is inoperative. --~ Recordkeeping: Maintain a file of all measurements. maintenance. reports and 40 CFR Section 60.?(f); Minn. R , subp. 1 records for at least five years. NOTIFICATJONS Notification of Anticipated Date for Conducting Opacity Observations: due 30 day 40 CFR Section 60.7(a)(4); Minn. R subp. prior to observation date 1 Notification of any physical or operational change which increases emission rate: 40 CFR Section 60.7(a)(4); Minn. R subp. due 60 days (or as soon as practical) before the change is commenced, unless 1 specifically exempted under an applicable subpart or in section 60.14(e). No owner or operator shall build, erect, install, or use any article, machine, 40 CFR Section 60.12; Minn. R equipment or process, the use of which conceals an emission which would otherwise constitute a violation of an applicable standard. PERFORMANCE TESTING See SV005 requirements. Minn. R , subp. 1

69 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-62 05/04/15 Subject Item: Associated Items: EU 007 SP1 - Pulverized Coal Boiler CE 006 Centrifugal Collector - Medium Efficiency CE 007 Fabric Filter - High Temperature, i.e., T>250 Degrees F GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers EMISSION LIMITS What to do Why to do it Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Minn. R , subp. 1 Opacity: less than or equal to 20 percent opacity, except for one six-minute period Minn. R , subp. 2 per hour of not more than 60% opacity. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 3 when different fuels are burned simultaneously in any combination: W= (Y x A+ Z x B) I (X + Y + Z) where: W = the maximum allowable emissions of S02 in lb/mmbtu X = percentage of total heat input from gaseous fossil fuel Y = percentage of total heat input from liquid fossil fuel Z = percentage of total heat input from solid fossil fuel A =the allowable S02 standard for liquid fossil fuels B = the allowable S02 standard for solid fossil fuels (less stringent than S02 limit found under SV006, met by equipment design) OPERATIONAL LIMITS Fuel type Bituminous and Subbituminous Coal, No. 2 fuel oil, and natural gas. Boiler annual capacity: less than or equal to 38,554 MMBtu/year using a 12-month rolling sum, to be calculated by the 15th of each month for the previous 12 month period. Minn. R , subp. 35a Minn. R , subp. 2; 40 CFR ( c)(2)(vi) Combustion of on-specification and off-specification used oil is authorized provided Minn. Stat. Section , subd. 4a; Minn. R. the Permittee meets the requirements of Minn. R. ch The Permittee must , subp. 2, Minn. R , subp. 100a; keep a daily record of the amount of used oil combusted ; and Opacity GEMS: The owner or operator shall maintain and operate a COMS on Minn. R SV006 to measure opacity emissions from the emission unit. Sulfur Dioxide: Determine the average S02 emissions by collecting coal samples Minn. R in an as-fired condition at the inlet to the steam-generating unit using the coal sampling procedures specified in GP008 of this permit. Analyze them for sulfur content and heating value, and maintain fuel oil supplier receipts according to the procedures specified in this permit. POLLUTION CONTROL EQUIPMENT Operate and maintain CE007 (high temp. fabric filter) and CE006 (med. efficiency Minn. R , subp. 2 and 14 centrifugal collector) at all times that any emission unit controlled by the fabric filter is in operation. The fabric filter shall be operated in accordance with the requirements of CE007. PERFORMANCE TESTING See SV006 requirements. Minn. R , subp. 1 RECORDKEEPING ' Daily Recordkeeping: The Permittee shall record the daily amount of fuel combusted in the boiler and heating value of the fuel for the previous operating day. Minn. R , subps. 4 and 5; 40 CFR ( c)(2)(vi) Daily Recordkeeping: The Permittee shall calculate and record the daily total heat Minn. R , subp. 5 input (MMBtu) using the higher heating value and the quantity of each fuel combusted for the previous operating day

70 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-63 05/04/15 Subject Item: Associated Items: EU 008 SP2 - Pulverized Coal Boiler CE 007 Fabric Filter - High Temperature, i.e., T>250 Degrees F CE 041 Centrifugal Collector - Medium Efficiency GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers EMISSION LIMITS What to do Why to do it Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Minn. R , subp. 1 Opacity: less than or equal to 20 percent opacity, except for one six-minute period Minn. R , subp. 2 per hour of not more than 60% opacity. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 3 when different fuels are burned simultaneously in any combination: W= (Y x A + Z x B) I (X + Y + Z) where: W = the maximum allowable emissions of S02 in lb/mmbtu X = percentage of total heat input from gaseous fossil fuel Y = percentage of total heat input from liquid fossil fuel Z = percentage of total heat input from solid fossil fuel A = the allowable S02 standard for liquid fossil fuels B = the allowable S02 standard for solid fossil fuels (less stringent than S02 limit found under SV006, met by equipment design) OPERATIONAL LIMITS Fuel type: Bituminous and Subbituminous Coal, No. 2 fuel oil, and natural gas. Minn. R , subp. 35a - Boiler annual capacity: less than or equal to 38,554 MMBtu/year using a 12-month Minn. R , subp. 2; 40 CFR rolling sum, to be calculated by the 15th of each month for the previous 12 month (c)(2)(vi) period Combustion of on-specification and off-specification used oil 1s authorized provided Minn. Stat Section subd. 4a. Minn. R the Permittee meets the requirements of Minn. R. ch The Permittee must , subp. 2. Minn. R , subp 1 OOa; keep a daily record of the amount of used oil combusted ; and Opacity CEMS: The owner or operator shall maintain and operate a COMS on Minn. R SV006 to measure opacity emissions from the emission unit. Sulfur Dioxide: Determine the average S02 emissions by collecting coal samples Minn. R in an as-fired condition at the inlet to the steam-generating unit using the coal sampling procedures specified in GP008 of this permit. Analyze them for sulfur content and heating value, and maintain fuel oil supplier receipts according to the procedures specified in this permit. POLLUTION CONTROL EQUIPMENT Operate and maintain CE007 (high temp. fabric filter) and CE006 (med. efficiency Minn. R , subp. 2 and 14 centrifugal collector) at all times that any emission unit controlled by the fabric filter is in operation. The fabric filter shall be operated in accordance with the requirements of CE007. PERFORMANCE TESTING See SV006 requirements. Minn. R , subp. 1 RECORDKEEPING Daily Recordkeeping: The Permittee shall record the daily amount of fuel combusted in the boiler and heating value of the fuel for the previous operating day. Minn. R , subps. 4 and 5; 40 CFR (c)(2)(vi) Daily Recordkeeping: The Permittee shall calculate and record the daily total heat Minn. R , subp. 5 input (MM Btu) using the higher heating value and the quantity of each fuel combus~~~f>~vio~oj?-~ating day

71 --~ TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number: A-64 05/04/15 Subject Item: Associated Items: EU 009 SP5 - Spreader Stoker Boiler CE 021 Fabric Filter - High Temperature. 1 e. T>250 Degrees F CE 042 Centrifugal Collector - Medium Efficiency GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers EMISSION LIMITS What to do Why to do it Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Minn. R , subp. 1 Opacity: less than or equal to 20 percent opacity, except for one six-minute period Minn. R , subp. 2 per hour of not more than 60% opacity. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 3 when different fuels are burned simultaneously in any combination: W= (Y x A + Z x B) I (X + Y + Z) where: W = the maximum allowable emissions of S02 in lb/mmbtu X = percentage of total heat input from gaseous fossil fuel Y = percentage of total heat input from liquid fossil fuel Z = percentage of total heat input from solid fossil fuel A = the allowable S02 standard for liquid fossil fuels B = the allowable S02 standard for solid fossil fuels (less stringent than S02 limit found under SV006, met by equipment design) OPERATIONAL LIMITS Fuel type: Bituminous and Subbituminous Coal, No. 2 fuel oil, and natural gas. Minn. R , subp. 35a Boiler annual capacity: less than or equal to 74,460 MMBtu/year using a 12-month rolling sum, to be calculated by the 15th of each month for the previous 12 month period. Minn. R , subp. 2; 40 CFR ( c)(2)(vi) Combustion of on-specification and off-specification used oil is authorized provided Minn. Stat. Section , subd. 4a; Minn. R. the Permittee meets the requirements of Minn. R. ch The Permittee must , subp. 2, Minn. R , subp. 100a; keep a daily record of the amount of used oil combusted ; and Opacity CEMS: The owner or operator shall maintain and operate a COMS on Minn. R SV006 to measure opacity emissions from the emission unit. Sulfur Dioxide: Determine the average S02 emissions by collecting coal samples Minn. R in an as-fired condition at the inlet to the steam-generating unit using the coal sampling procedures specified in GP008 of this permit. Analyze them for sulfur content and heating value, and maintain fuel oil supplier receipts according to the procedures specified in this permit. POLLUTION CONTROL EQUIPMENT Operate and maintain CE021 (high temp. fabric filter) and CE006 (med. efficiency Minn. R , subp. 2 and 14 centrifugal scrubber) at all times that any emission unit controlled by the fabric filter is in operation. The fabric filter shall be operated in accordance with the requirements of CE021 PERFORMANCE TESTING See SV006 requirements Minn. R , subp. 1 RECORDKEEPING - Daily Recordkeeping: The Permittee shall record the daily amount of fuel combusted in the boiler and heating value of the fuel for the previous operating day. Minn. R , subps. 4 and 5; 40 CFR ( c)(2)(vi) Daily Recordkeeping: The Permittee shall calculate and record the daily total heat Minn. R , subp. 5 input (MMBtu) using the higher heating value and the quantity of each fuel combusted for the previous operating day.

72 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number A-65 05/04/15 Subject Item: Associated Items: EU 010 SP6 - Spreader Stoker Boiler CE 022 Fabric Filter - High Temperature. i.e., T>250 Degrees F CE 043 Centrifugal Collector - Medium Efficiency GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers GP 008 Boilers subject to coal sampling and analysis GP 020 Limited Use Boilers SV 006 SP1/SP2/SP5/SP6 Pulverized coal and spreader stoker boilers EMISSION LIMITS What to do Why to do it Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Minn. R , subp. 1 Opacity: less than or equal to 20 percent opacity, except for one six-minute period Minn. R , subp. 2 per hour of not more than 60% opacity. Sulfur Dioxide: less than or equal to the amount allowed by the following formula Minn. R , subp. 3 when different fuels are burned simultaneously in any combination: W= (Y x A + Z x B) I (X + Y + Z) where: W = the maximum allowable emissions of S02 in lb/mmbtu X = percentage of total heat input from gaseous fossil fuel Y = percentage of total heat input from liquid fossil fuel Z = percentage of total heat input from solid fossil fuel A = the allowable S02 standard for liquid fossil fuels B = the allowable S02 standard for solid fossil fuels (less stringent than S02 limit found under SV006, met by equipment design) OPERATIONAL LIMITS Fuel type: Bituminous and Subbituminous Coal, No. 2 fuel oil, and natural gas. Boiler annual capacity: less than or equal to 74,460 MMBtu/year using a 12-month rolling sum, to be calculated by the 15th of each month for the previous 12 month period. Minn. R , subp. 35a Minn. R , subp. 2; 40 CFR (c)(2)(vi) Combustion of on-specification and off-specification used oil is authorized provided Minn. Stat. Section , subd. 4a; Minn. R. the Permittee meets the requirements of Minn. R. ch The Permittee must , subp. 2, Minn. R , subp. 100a; keep a daily record of the amount of used oil combusted ; and Opacity GEMS: The owner or operator shall maintain and operate a COMS on Minn. R SV006 to measure opacity emissions from the stack. Sulfur Dioxide: Determine the average S02 emissions by collecting coal samples Minn. R in an as-fired condition at the inlet to the steam-generating unit using the coal sampling procedures specified in GP008 of this permit. Analyze them for sulfur content and heating value, and maintain fuel oil supplier receipts according to the procedures specified in this permit. POLLUTION CONTROL EQUIPMENT Operate and maintain CE022 (high temp. fabric filter) and CE006 (med. efficiency Minn. R subp. 2 and 14 centrifugal collector) at all times that any emission unit controlled by the fabric filter is in operation. The fabric filter shall be operated in accordance with the requirements of CE022. PERFORMANCE TESTING - See SV006 requirements. Minn R , subp. 1 RECORDKEEPING Daily Recordkeeping: The Permittee shall record the daily amount of fuel Minn. R subps. 4 and 5; 40 CFR combusted in the boiler and heating value of the fuel for the previous operating day (c)(2)(vi) Daily Recordkeeping: The Permittee shall calculate and record the daily total heat Minn. R , subp. 5 input (MMBtu) using the higher heating value and the quantity of each fuel combusted for the previous operating day.

73 TABLE A: LIMITS AND OTHER REQUIREMENTS A-66 05/04/15 Facility Name: University of MN - Twin Cities Permit Number Subject Item: EU 011 SP7 - Oil/Gas Package Boiler Associated Items: GP 002 All steam service steam boilers & CHP turbine/duct burner (HAP and heat input limits) GP 004 Boilers SG231 and SP? - fuel oil usage limit GP 006 COMS req'd by state rule: St. Paul Plant Boilers and SE Plant Boilers SV 007 SP? - Oil/Gas Package Boiler EMISSION LIMITS What to do Why to do it Opacity: less than or equal to 20 percent opacity (six-minute average) when 40 CFR Section 60.43c(c); Minn. R combusting oil; except for one (1) six-minute period per hour of not more than 27% opacity. - The opacity standard applies at all times, except during periods of startup, 40 CFR Section 60.43c(d); Minn. R shutdown or malfunction. OPERATIONAL LIMITS Fuel type: Distillate fuel oil (No. 2 fuel oil), and natural gas. Fuel Heat Input less than or equal to 99 million Btu/hour Minn. R , subp. 35a Title I Condition: limit to avoid classification as a major modification under 40 CFR Section 52.21; Minn. R Maximum Distillate Oil Fuel Usage: less than or equal to gallons/year Title I Condition: limit to avoid classification as a major using 12-month Rolling Sum modification under 40 CFR Section 52.21; Minn. R Maximum Natural Gas Fuel Usage: less than or equal to 563 million cubic Title I Condition: limit to avoid classification as a major feet/year using 12-month Rolling Sum modification under 40 CFR Section 52.21; Minn. R Fuel Usage: less than or equal to gallons/year using 12-month Rolling Title I Condition: limit to avoid classification as a major Sum for distillate oil and less than or equal to million cubic feet using a modification under 40 CFR Section 52.21; Minn. R. 12-month rolling period for natural gas. For every 1000 gallons distillate oil used in excess of the limit above, the limit on natural gas is reduced by million cubic feet. For every 1 million cubic feet natural gas used in excess of the limit above, the limit on distillate oil use is reduced by 7300 gallons. Sulfur Dioxide: less than or equal to 0.5 percent by weight sulfur in fuel oil. 40 CFR Section 60.42c(d); Minn. R Sulfur Dioxide: The S02 standard applies at all times including startup, shutdown 40 CFR Section 60.42c(i); Minn. R or malfunction. CONTINUOUS OPACITY MONITORING SYSTEM (COMS) ~ Emissions Monitoring The owner or operator shall use a COMS to measure Minn R , subp 1 opacity emissions from SV007 (See requirements for COMS under GP006) RECORDKEEPING Maintain records of the type and amount of each fuel combusted each day. 40 CFR Section 60.48c(g); Minn. R Calculate the 12-month rolling sum each calendar month for each fuel type. Recordkeeping: maintain records of the type and amount of each fuel combusted 40 CFR Section 60.48c(g); Minn. R each day. Calculate the 12-month rolling sum each calendar month for each fuel type. Sulfur Dioxide: The Permittees shall obtain and maintain at the facility records of 40 CFR Section 60.48c(f)(1 ); 40 CFR Section fuel supplier certifications. The certifications shall include the following information: 60.44c(h); Minn. R The name of the fuel supplier; 2. A statement from the supplier that the fuel oil meets the definition of distillate oil in 40 CFR Section 60.41c. PERFORMANCE TESTING See SV007 requirements. Minn. R , subp. 1

74 TABLE A: LIMITS AND OTHER REQUIREMENTS A-67 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 014 Diesel rpm Generator; 6 Cylinder in Line; 4 Cycles, Turbo St. Paul Plant SV 010 Diesel rpm GEN Turbo SP Plant OPERATIONAL LIMITS What to do Why to do it Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum Title I Condition to avoid classification as a major to be calculated by the 15th day of each month. modification under 40 CFR Section 52.21, Minn. R EMISSION LIMITS Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input Minn. R , subp. 2 RECORDKEEPING REQUIREMENTS Maintain records of the hours of operation for each calendar month and a record of Title I Condition: to avoid classification as a major the 12-month rolling sum of hours of operation. modification under 40 CFR Section 52.21; Minn. R Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Minn. R , subps. 4 & 5 receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight. Records shall be maintained for 5 years.

75 ---~ TABLE A: LIMITS AND OTHER REQUIREMENTS A-68 05/04/15 Facility Name: University of MN - Twin Cities Permit Number Subject Item: Associated Items: EU 015 Diesel rpm Generator; 8 Cylinder V; 4 Cycles, Turbo SV 011 Diesel rpm GEN Turbo OPERATIONAL LIMITS What to do Why to do it Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum Title I Condition: to avoid classification as a major to be calculated by the 15th day of each month. modification under 40 CFR Section 52.21; Minn. R EMISSION LIMITS Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input Minn. R , subp. 2 RECORDKEEPING REQUIREMENTS Maintain records of the hours of operation for each calendar month and a record of Title I Condition: to avoid classification as a major the 12-month rolling sum of hours of operation. modification under 40 CFR Section 52.21; Minn. R Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Minn. R , subps. 4 & 5 receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight Records shall be maintained for 5 years.

76 TABLE A: LIMITS AND OTHER REQUIREMENTS A-69 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 016 Diesel rpm; 6 Cylinder in Line; 4 Cycles SE Fire Pump SV 012 Diesel rpm GEN Fire pump OPERATIONAL LIMITS What to do Why to do it Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum Title I Condition: to avoid classification as a major to be calculated by the 15th day of each month. modification under 40 CFR Section 52.21; Minn. R EMISSION LIMITS Opacity: less than or equal to 20 percent opacity once operating temperatures Minn. R , subp. 1 have been attained. Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input as determined by Minn. R , subp. 2 vendor certification of fuel oil sulfur content. RECORDKEEPING REQUIREMENTS Maintain records of the hours of operation for each calendar month and a record of Title I Condition: to avoid classification as a major the 12-month rolling sum of hours of operation. modification under 40 CFR Section 52.21; Minn. R Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel Minn. R , subps. 4 & 5 receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight. Records shall be maintained for 5 years.

77 TABLE A: LIMITS AND OTHER REQUIREMENTS A-70 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU GEN002-4th Street Switch-Reciprocating IC Engine GP 012 Peaking Unit Generators: Annual Limits to Avoid PSD SV GEN002-4th Street Switch What to do Why to do it lntercooler Temperature: less than 195 degrees Fahrenheit at all times during Title I Condition: limit to avoid classification as a emission unit operation. major modification under 40 CFR Section Recordkeeping: Maintain records of intercooler temperatures for a period of five years from the date of measurement. Refer to GP012 for further requirements. Title I Condition: recordkeeping for limit to avoid classification as a major modification under 40 CFR Section 52.21

78 TABLE A: LIMITS AND OTHER REQUIREMENTS A-71 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: EU GEN003-4th Street Switch-Reciprocating IC Engine Associated Items: GP 012 Peaking Unit Generators: Annual Limits to Avoid PSD SV GEN003-4th Street Switch What to do Why to do it lntercooler Temperature: less than 195 degrees Fahrenheit at all times during Title I Condition: limit to avoid classification as a emission unit operation. major modification under 40 CFR Section Recordkeeping: Maintain records of intercooler temperatures for a period of five years from the date of measurement. Refer to GP012 for further requirements. Title I Condition: recordkeeping for limit to avoid classification as a major modification under 40 CFR Section 52.21

79 ~ ~ --- TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number A-72 05/04/15 Subject Item: EU B0-005 Art Building ~ EMISSION LIMITS What to do Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Sulfur Dioxide: less than or equal to 1.6 lbs/million Btu heat input Opacity: less than or equal to 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. OPERATING CONDITIONS Fuel type: Natural gas only. Why to do it Minn. R , subp. 1 Minn. R , subp. 1 Minn. R , subp. 2 Minn. R , subp. 35a

80 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twin Cities Permit Number: A-73 05/04/15 Subject Item: EU Bierman Field Ath EMISSION LIMITS What to do Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Sulfur Dioxide: less than or equal to 1.6 lbs/million Btu heat input Opacity: less than or equal to 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. OPERATING CONDITIONS Fuel type: Natural gas/propane/no. 2 fuel oil only. RECORDINGKEEPING REQUIREMENTS Fuel Oil Sulfur Content Certification: Obtain and maintain at the facility fuel receipts from the fuel supplier which certify the sulfur content of the fuel does not exceed 0.5% by weight Records shall be maintained for 5 years. Fuel type: Natural gas only Why to do it Minn. R , subp. 1 Minn. R , subp. 1 Minn. R , subp. 2 Minn. R , subp. 35a Minn. R , subps. 4 & 5 Minn. R , subp. 35a

81 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name: University of MN - Twin Cities Permit Number: A-74 05/04/15 Subject Item: EU Bierman Field Ath EMISSION LIMITS What to do Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Sulfur Dioxide less than or equal to 1.6 lbs/million Btu heat input Why to do it Opacity: less than or equal to 20 percent opacity except for one six-minute period Minn. R , subp. 2 per hour of not more than 60 percent opacity OPERATING CONDITIONS! Fuel type: Natural gas only Minn. R , subp. 35a Minn. R , subp. 1 Minn. R , subp 1 --

82 TABLE A: LIMITS AND OTHER REQUIREMENTS A-75 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 143 SE Mpls biomass truck unloading CE 039 Fabric Filter - Low Temperature, i.e., T<180 Degrees F EMISSION LIMITS What to do Opacity: less than or equal to 5% opacity from truck unloading stations, railcar unloading stations, railcar loading stations, and handling operation fugitive emissions. Opacity: less than or equal to 10 percent opacity discharged from control equipment. Total Particulate Matter: greater than or equal to 80% collection efficiency. Why to do it Minn. R , subp. 3(A) Minn. R , subp. 3(D) Minn. R , subp. 3(E) PM < 10 micron: greater than or equal to 89.1 percent control efficiency. The Minn. R , subp. 2 and 14 Permittee shall operate and maintain the control equipment such that it achieves an overall control efficiency for PM10 of 89.1 percent. This limit applies to each unit individually. Total Particulate Matter: greater than or equal to 89.1 percent control efficiency Minn. R , subp. 2 and 14 The Permittee shall operate and maintain the control equipment such that it achieves an overall control efficiency for PM of 89.1 percent. This limit applies to each unit individually. OPERATING LIMITS The Permittee shall clean up commodities (i.e., biomass) spilled on the driveway and other facility property as required to minimize fugitive emissions to a level consistent with RACT (reasonably available control technology). Minn. R , subp. 1(A) Visible Emissions: The Permittee shall check the fabric filter for any visible Minn. R , subp. 4 and 5 emissions once each day of operation during daylight hours. During inclement weather, the Permittee shall read and record the pressure drop across the fabric filter, once each day of operation. Pressure Drop: greater than or equal to 2 inches of water column and less than or Minn. R , subp. 4 and 5 equal to 6 inches of water column, unless a new range is required to be set pursuant to Minn. R , subp. 3, based on the values recorded during the most recent MPCA approved performance test where compliance was demonstrated. The Permittee shall operate and maintain the fabric filter at all times that any Minn. R , subp. 2 and 14 emission unit controlled by the fabric filter is in operation. The Permittee shall document periods of non-operation of the control equipment. Periodic Inspections: At least once per calendar quarter, or more frequently as Minn. R , subp. 4, 5 and 14 required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections REPORTING AND RECORDKEEPING Record keeping of Visible Emissions and Pressure Drop. The Permittee shall Minn. R , subp. 4 and 5 record the time and date of each visible emission inspection and pressure drop reading, and whether or not any visible emissions were observed. NOTIFICATIONS Notification of Commence Construction Date and Initial Startup Date: due 30 days Minn. R , subp. 2 after initial startup. The Permittee shall submit the following information with the notification: stack/vent, control equipment, and emissions unit information using the latest MPCA application forms.

83 TABLE A: LIMITS AND OTHER REQUIREMENTS A-76 05/04/15 Facility Name. University of MN - Twin Cities Permit Number Subject Item: Associated Items: EU 144 SE Mpls biomass silo and biomass transfer to CFB CE 040 Fabric Filter - Low Temperature, i.e., T<180 Degrees F EMISSION LIMITS What to do Opacity: less than or equal to 5% opacity from truck unloading stations, railcar unloading stations, railcar loading stations, and handling operation fugitive emissions. Opacity: less than or equal to 10 percent opacity discharged from control equipment. Total Particulate Matter: greater than or equal to 80% collection efficiency. Why to do it Minn. R , subp. 3(A) Minn. R , subp. 3{D) Minn. R , subp. 3(E) PM < 10 micron: greater than or equal to 99 percent control efficiency. The Minn. R , subp. 2 and 14 Permittee shall operate and maintain the control equipment such that it achieves an overall control efficiency for PM1Oof99 percent. This limit applies to each unit individually. Total Particulate Matter: greater than or equal to 99 percent control efficiency Minn. R , subp. 2 and 14 The Permittee shall operate and maintain the control equipment such that it achieves an overall control efficiency for PM of 99 percent. This limit applies to each unit individually. OPERATING LIMITS The Permittee shall clean up commodities (i e. biomass) spilled on the driveway and other facility property as required to minimize fugitive emissions to a level consistent with RAC.T (reasonably available control technology). - Minn. R , subp. 1 (A) Visible Emissions: The Permittee shall check the fabric filter for any visible Minn. R , subp. 4 and 5 emissions once each day of operation during daylight hours. During inclement weather, the Permittee shall read and record the pressure drop across the fabric filter. once each day of operation. Pressure Drop: greater than or equal to 2 inches of water column and less than or Minn. R , subp. 4 and 5 equal to 6 inches of water column, unless a new range is required to be set pursuant to Minn. R , subp. 3, based on the values recorded during the most recent MPCA approved performance test where compliance was demonstrated. The Permittee shall operate and maintain the fabric filter at all times that any Minn. R , subp. 2 and 14 emission unit controlled by the fabric filter is in operation. The Permittee shall document periods of non-operation of the control equipment. Periodic Inspections: At least once per calendar quarter, or more frequently as Minn. R , subp. 4, 5 and 14 required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. REPORTING AND RECORDKEEPING Record keeping of Visible Emissions and Pressure Drop. The Permittee shall Minn. R , subp. 4 and 5 record the time and date of each visible emission inspection and pressure drop reading, and whether or not any visible emissions were observed NOTIFICATIONS -~ ~- Notification of Commence Construction Date and Initial Startup Date: due 30 days Minn. R , subp. 2 after initial startup. The Permittee shall submit the following information with the notification: stack/vent, control equipment, and emissions unit information using the latest MPCA application forms.

84 TABLE A: LIMITS AND OTHER REQUIREMENTS A-77 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: EU 156 Cancer/Cardio Boiler 1 Associated Items: SV 088 Cancer/Cardio Boiler 1 What to do Recordkeeping: By the last day of each calendar month, the Permittee shall record 40 CFR Section 60.48c(g); the amount of natural gas combusted in the boilers during the previous calendar Minn. R month. These records shall consist of purchase records, receipts, or fuel meter readings. Why to do it

85 TABLE A: LIMITS AND OTHER REQUIREMENTS A-78 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: EU 157 Cancer/Cardio Boiler 2 Associated Items: SV 089 Cancer/Cardio Boiler 2 What to do Recordkeeping: By the last day of each calendar month. the Permittee shall record 40 CFR Section 60.48c(g); the amount of natural gas combusted in the boilers during the previous calendar Minn. R month. These records shall consist of purchase records. receipts or fuel meter readings Why to do it

86 TABLE A: LIMITS AND OTHER REQUIREMENTS A-79 05/04/15 Facility Name: University of MN - Twin Cities Permit Number: Subject Item: Associated Items: EU 163 Main Plant Reciprocating IC Engine CE 045 Catalytic Converter GP 015 Emergency Generators SV 094 Main Plant Reciprocating IC Engine What to do 40 CFR PT. 63, SUBP. ZZZZ REQUIREMENTS Why to do it EU 163 is a new affected source as defined under 40 CFR pt. 63, subp. ZZZZ, and 40 CFR Section (c); Minn. R the facility is an area source as defined at 40 CFR Section The Permittee shall meet the requirements of 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp No further requirements of 40 CFR pt. 63, subp. ZZZZ apply to EU CFR PT. 60, SUBP REQUIREMENTS EMISSION LIMITS Exhaust opacity shall not exceed: 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR (1) 20 percent during the acceleration mode; Section (c); Minn. R ; Minn. R. (2) 15 percent during the lugging mode; and (3) 50 percent during the peaks in either the acceleration or lugging modes. Carbon Monoxide: less than or equal to 3.5 grams/kilowatt-hour NMHC+NOx: less than or equal to 4.0 grams/kilowatt-hour Total Particulate Matter: less than or equal to 0.20 grams/kilowatt-hour 40 CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (b); 40 CFR Section (a)(2); 40 CFR Section (a); 40 CFR Section (c); Minn. R ; Minn. R The Permittee shall operate and maintain EU 163 so that it achieves these 40 CFR Section ; 40 CFR Section (c); emission standards over the entire life of the engine. Minn. R ; Minn. R OPERATING LIMITS Sulfur Content of Fuel: less than or equal to 15 parts per million for diesel fuel. 40 CFR Section (b); 40 CFR Section Cetane index or aromatic content: (b); 40 CFR Section (c); Minn. R (i) a minimum cetane index of 40, or ; Minn. R (ii) a maximum aromatic content of 35 volume percent. ~- ---~~--- The Permittee must operate and maintain the engine according to the 40 CFR Section ; 40 CFR Section (a); manufacturer's written instructions or procedures developed by the Perm1ttee that 40 CFR Section (c); Minn. R ; are approved by the engine manufacturer, over the entire life of the engine. The Minn. R Permittee may only change those settings that are permitted by the manufacturer. The Permittee must also meet the requirements of 40 CFR parts 89, 94 and/or 1068, as applicable. Operating Hours: less than or equal to 300 hours/year using 12-month Rolling Sum [Stage 1] Title I Condition: To avoid classification as a.by the 15th day of each month, the Permittee shall record the hours of operation major modification under 40 CFR Section and during the previous calendar month, and the operating hours during the previous Minn. R month period. This is a total of all operatoring hours, regardless of purpose of usage. Compliance Demonstration: The Permittee must demonstrate compliance by 40 CFR Section (c); 40 CFR Section purchasing an engine certified to conform with the emission standards listed in the (c); Minn. R ; Minn. R emission limits above for the same model year and maximum engine power. The engine must be installed and configured according to manufacturer's specifications. The Permittee must operate the emergency stationary ICE according to the 40 CFR Section (f); 40 CFR Section requirements in 40 CFR Section (f)(2) through (3). In order for the engine (c); Minn. R ; Minn. R to be considered an emergency stationary ICE under this 40 CFR pt. 60, subp. 1111, any operation other than emergency operation, maintenance and testing, emergency demand response, and operation in non-emergency situations for 50 hours per year, as described in 40 CFR Section (f)(2) through (3). is prohibited. If the Permittee does not operate the engine according to the requirements in 40 CFR Section (f)(2) through (3), the engine will not be considered an emergency engine under 40 CFR pt. 60, subp 1111 and must meet all requirements for non-emergency engines.

87 TABLE A: LIMITS AND OTHER REQUIREMENTS Facility Name University of MN - Twrn Cities Permit Number A-80 05/04/15 ~ Operating Hours less than or equal to 100 hours/year for any combination of the purposes specified in paragraphs 40 CFR Section (f)(2)(i) through (iii). Any operation for non-emergency situations as allowed by 40 CFR Section (f)(3) counts as part of the 100 hours per calendar year allowed by 40 CFR Section (f)(3). Emergency stationary ICE may be operated 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 ICE beyond 100 hours per calendar year Emergency stationary ICE may be operated for emergency demand response for periods in which the Reliability Coordinator under the North American Electric Reliability Corporation (NERC) Reliability Standard EOP-002-3, Capacity and Energy Emergencies (incorporated by reference, see 40 CFR Section 60.17), or other authorized entity as determined by the Reliability Coordinator, has declared an Energy Emergency Alert Level 2 as defined in the NERC Reliability Standard EOP Emergency stationary ICE may be operated for periods where there is a deviation of voltage or frequency of 5 percent or greater below standard voltage or frequency. Operating Hours. less than or equal to 50 hours/year in non-emergency situations. The 50 hours of operation 1n non-emergency situations are counted as part of the 100 hours per calendar year for maintenance and testing and emergency demand response provided in 40 CFR Section (f)(2). Except as provided in 40 CFR Section (f}(3)(i), the 50 hours per calendar year for non-emergency situations cannot be used for peak shaving or non-emergency demand response, or to generate income for a facility to an electric grid or otherwise supply power as part of a financial arrangement with another entity. The 50 hours per year for non-emergency situations can be used to supply power as part of a financial arrangement with another entity if all of the following conditions are met: A. The engine is dispatched by the local balancing authority or local transmission and distribution system operator; B. The dispatch is intended to mitigate local transmission and/or distribution limitations so as to avert potential voltage collapse or line overloads that could lead to the interruption of power supply in a local area or region. C. The dispatch follows reliability, emergency operation or similar protocols that follow specific NERC, regional, state, public utility commission or local standards or guidelines. D. The power is provided only to the facility itself or to support the local transmission and distribution system. (continued below) (continued from above) E. Permittee identifies and records the entity that dispatches the engine and the specific NERC, regional, state, public utility commission or local standards or guidelines that are being followed for dispatching the engine The local balancing authority or local transmission and distribution system operator may keep these records on behalf of the Permittee. MONITORING REQUIREMENTS The engine shall contain a non-resettable hour meter prior to startup of engine. RECORDKEEPING REQUIREMENTS The Permittee shall maintain records of the operation of the engine. The record must include the time of operation and the reason the generator was in operation during that time. GENERAL PROVISIONS FOR NSPS 1111 The Permittee shall comply with the General Provisions in 40 CFR Section 60.1 through 60.19, as applicable General Provisions for 60. 7(a)(4) and 60. 7(b) are specified below. 40 CFR Section (f)(2); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(ii); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(2)(iii); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section (f)(3)(i); 40 CFR Section (c); Minn. R ; Minn. R CFR Section ; 40 CFR Section (c); Minn. R ; Minn. R [Stage 1] Title I Condition: To avoid classification as a major modification under 40 CFR Section and Minn. R ; 40 CFR Section (b); 40 CFR Section (c); Minn. R ; Minn. R CFR Section ; 40 CFR Pt. 60 Subp. 1111; 40 CFR Section (c); Minn. R ; Minn. R