Iowa Department Of Natural Resources Title V Operating Permit Permitted .

for taking corrective action in those cases where said authority has received complaints of or has actual knowledge of dust conditions which require abatement pursuant to this subrule. Reasonable precautions may include, but not limited to, the following procedures. 1. Use, where practical, of water or chemicals for control of dusts in the demolition of existing buildings or structures, construction operations, the grading of roads or the clearing of land. 2. Application of suitable materials, such as but not limited to asphalt, oil, water or chemicals on unpaved roads, material stockpiles, race tracks and other surfaces which can give rise to airborne dusts. 3. Installation and use of containment or control equipment, to enclose or otherwise limit the emissions resulting from the handling and transfer of dusty materials, such as but not limited to grain, fertilizers or limestone. 4. Covering at all times when in motion, open-bodied vehicles transporting materials likely to give rise to airborne dusts. 5. Prompt removal of earth or other material from paved streets or to which earth or other material has been transported by trucking or earth-moving equipment, erosion by water or other means. Authority for Requirement: 567 IAC 23.3(2)"c" RLA Page 9 of 107 99-TV-050R4, 07/06/2020

III. Emission Point-Specific Conditions Facility Name: Cargill Inc. – Iowa Falls Permit Number: 99-TV-050R4 Emission Point ID Number: EP-01 Associated Equipment Emission Unit 1.1 Emission Unit Description Hull Grinding 1.2 Pod Grinder Prep Aspiration with Cyclone 1.3 1.5 Control Equipment Baghouse (CE 1.0) Raw Material Rated Capacity 7.1 tons/hour 1.5 tons/hour 118.75 tons/hour 10.0 tons/hour Soybeans Pellet Transfer System Construction Permit 78-A-071-S9 Applicable Requirements Emission Limits (lb./hr, gr./dscf, lb./MMBtu, % opacity, etc.) The emissions from this emission point shall not exceed the levels specified below. Emission Limits for EU-1.1, EU-1.2, and EU-1.3 Pollutant lb/hr tons/yr Additional Limits Authority for Requirement Opacity NA NA 40% (1) 567 IAC 23.3(2) "d" DNR Construction Permit 78-A-071-S9 Particulate 0.17 NA NA DNR Construction Permit 78-A-071-S9 Matter (PM10) Particulate 567 IAC 23.4(7) 0.17 NA 0.1 gr/dscf Matter (PM) DNR Construction Permit 78-A-071-S9 (1) If visible emissions are observed, the owner/operator shall promptly investigate the emission unit and make corrections to operations or equipment associated with the exceedance. If exceedances continue after the corrections, the DNR may require additional proof to demonstrate compliance (e.g., stack testing). Emission Limits for EU-1.1, EU-1.2, EU-1.3, and EU-1.5 Pollutant lb/hr tons/yr Additional Limits Authority for Requirement Opacity NA NA 40% (2) 567 IAC 23.3(2) "d" DNR Construction Permit 78-A-071-S9 Particulate 0.60 NA NA DNR Construction Permit 78-A-071-S9 Matter (PM10) 567 IAC 23.4(7) Particulate 0.60 NA 0.1 gr/dscf DNR Construction Permit 78-A-071-S9 Matter (PM) (2) An exceedance of the indicator opacity of 10% will require the owner/operator to promptly investigate the emission unit and make corrections to operations or equipment associated with the exceedance. If exceedances continue after the corrections, the DNR may require additional proof to demonstrate compliance (e.g., stack testing). RLA Page 10 of 107 99-TV-050R4, 07/06/2020

Operating Requirements with Associated Monitoring and Recordkeeping All records as required by this permit shall be kept on-site for a minimum of five (5) years and shall be available for inspection by the Department. Records shall be legible and maintained in an orderly manner. The operating requirements and associated recordkeeping for this permit shall be: Operating Limits Operating limits for this emission unit shall be: A. The owner or operator shall operate and maintain the control equipment according to manufacturer’s specifications and instructions. B. The owner or operator shall not exceed a grain processing rate of 95,000 bushels per day based on a 365-day rolling average. Reporting and Recordkeeping i. The owner or operator shall maintain a record of all inspections and maintenance and any action resulting from the inspection and maintenance of the control equipment. ii. The owner or operator shall maintain the following daily records: i. The amount, in bushels, of grain processed at the facility. ii. The 365-day rolling average for the amount of grain processed at the facility, in bushels per day. Authority for Requirement: DNR Construction Permit 78-A-071-S9 Emission Point Characteristics The emission point shall conform to the specifications listed below. Stack Height, (ft, from the ground): 140 Stack Opening, (inches, dia.): 12 Exhaust Flow Rate (scfm): 6,800 Exhaust Temperature ( F): Ambient Discharge Style: Vertical unobstructed Authority for Requirement: DNR Construction Permit 78-A-071-S9 The temperature and flowrate are intended to be representative and characteristic of the design of the permitted emission point. The Department recognizes that the temperature and flow rate may vary with changes in the process and ambient conditions. If it is determined that either the temperature or flowrate above are different than the values stated, the owner or operator shall submit a request to the Department within thirty (30) days of the discovery to determine if a permit amendment is required or submit a permit application requesting to amend the permit. RLA Page 11 of 107 99-TV-050R4, 07/06/2020

Monitoring Requirements The owner/operator of this equipment shall comply with the monitoring requirements listed below. Agency Approved Operation & Maintenance Plan Required? Yes No Facility Maintained Operation & Maintenance Plan Required? Yes No Compliance Assurance Monitoring (CAM) Plan Required? Yes No Facility operation and maintenance plans must be sufficient to yield reliable data from the relevant time period that are representative of the source’s compliance with the applicable requirements. The data pertaining to the plan shall be maintained on site for at least 5 years. The plan and associated recordkeeping provides documentation of this facility’s implementation of its obligation to operate according to good air pollution control practice. Good air pollution control practice is achieved by adoption of quality control standards in the operation and maintenance procedures for air pollution control that are comparable to industry quality control standards for the production processes associated with this emission point. Authority for Requirement: 567 IAC 22.108(3) RLA Page 12 of 107 99-TV-050R4, 07/06/2020

Emission Point ID Number: EP-02 Associated Equipment Emission Unit 2.1 Emission Unit Description Bean Rail Unload – Grain Receiving Control Equipment Baghouse (CE-2.1) Raw Material Soybeans Rated Capacity 25,000 bushels/day Construction Permit 94-A-523-S2 Applicable Requirements Emission Limits (lb./hr, gr./dscf, lb./MMBtu, % opacity, etc.) The emissions from this emission point shall not exceed the levels specified below. Pollutant: Opacity Emission Limit(s): 0% Authority for Requirement: DNR Construction Permit 94-A-523-S2 567 IAC 23.1(2) "ooo" 40 CFR 60 Subpart DD Pollutant: Particulate Matter (PM10) Emission Limit(s): 0.045 lb/hr Authority for Requirement: DNR Construction Permit 94-A-523-S2 Pollutant: Particulate Matter (PM) Emission Limit(s): 0.01 gr/scf Authority for Requirement: DNR Construction Permit 94-A-523-S2 567 IAC 23.1(2) "ooo" 40 CFR 60 Subpart DD NSPS Applicability This emission point is subject to NSPS Subpart A – General Provision and Subpart DD – Standards of Performance for Grain Elevators. The facility shall conform to all parts of this subpart that applies to this emission point and maintain the appropriate records. Authority for Requirement: DNR Construction Permit 94-A-523-S2 Operating Requirements with Associated Monitoring and Recordkeeping All records as required by this permit shall be kept on-site for a minimum of five (5) years and shall be available for inspection by the Department. Records shall be legible and maintained in an orderly manner. The operating requirements and associated recordkeeping for this permit shall be: Operating Limits A. The owner or operator shall install permanent structures which will allow ready access to the Bean Rail Unloading Aspirator baghouse. B. The owner or operator shall install sampling ports adequate for the test methods specified in 40 CFR 60, Appendix A, Method 5; 40 CFR 51, Appendix M, Method 202. RLA Page 13 of 107 99-TV-050R4, 07/06/2020

C. The owner or operator of the Bean Rail Unloading Aspirator shall establish a written Operation and Maintenance (O&M) Plan which includes a schedule for periodic inspection of the bags in the Bean Rail Unloading Aspirator baghouse. D. The owner or operator is required to operate the Bean Rail Unloading Aspirator and baghouse within the operating limits specified by the manufacturers. E. The owner or operator is required to use bags in the Bean Rail Unloading Aspirator baghouse which have a collection efficiency equal to or greater than the collection efficiency of the bags installed during initial emissions compliance testing. Reporting and Recordkeeping A. Maintenance and repairs performed on the Bean Rail Unloading Aspirator baghouse; B. Bag manufacturer's specifications which include collection efficiency of bags installed in the Bean Rail Unloading Aspirator baghouse; and C. Dates on which bags in Bean Rail Unloading Aspirator baghouse were installed. Authority for Requirement: DNR Construction Permit 94-A-523-S2 Emission Point Characteristics The emission point shall conform to the specifications listed below. Stack Height, (ft, from the ground): 36 Stack Opening, (inches, dia.): 19.3 Exhaust Flow Rate (acfm): 5,600 Exhaust Temperature ( F): Ambient Discharge Style: Horizontal Authority for Requirement: DNR Construction Permit 94-A-523-S2 The temperature and flowrate are intended to be representative and characteristic of the design of the permitted emission point. The Department recognizes that the temperature and flow rate may vary with changes in the process and ambient conditions. If it is determined that either the temperature or flowrate above are different than the values stated, the owner or operator shall submit a request to the Department within thirty (30) days of the discovery to determine if a permit amendment is required or submit a permit application requesting to amend the permit. Monitoring Requirements The owner/operator of this equipment shall comply with the monitoring requirements listed below. Visible emissions shall be observed on a weekly basis to ensure there are none when the emission unit on this emission point is at or near full capacity. If visible emissions are observed corrective action will be taken as soon as possible, but no later than eight hours from the observation of visible emissions. If corrective action does not return the observation to no visible emissions, then a Method 9 observation will be required. If an opacity ( 0 %) is observed, this would be a violation and corrective action will be taken as soon as possible, but no later than eight hours from observation of the violation. If weather conditions prevent the observer from conducting an observation, the observer shall note such conditions on the data observation sheet. At least three attempts shall be made to retake readings at approximately 2-hour intervals throughout the day. If all observation attempts for a week RLA Page 14 of 107 99-TV-050R4, 07/06/2020

have been unsuccessful due to weather, an observation shall be made the next operating day where weather permits. Maintain a written record of the observation and any action resulting from the observation for a minimum of five years. Authority for Requirement: 567 IAC 22.108(14) Agency Approved Operation & Maintenance Plan Required? Yes No Facility Maintained Operation & Maintenance Plan Required? Yes No Compliance Assurance Monitoring (CAM) Plan Required? Yes No Facility operation and maintenance plans must be sufficient to yield reliable data from the relevant time period that are representative of the source’s compliance with the applicable requirements. The data pertaining to the plan shall be maintained on site for at least 5 years. The plan and associated recordkeeping provides documentation of this facility’s implementation of its obligation to operate according to good air pollution control practice. Good air pollution control practice is achieved by adoption of quality control standards in the operation and maintenance procedures for air pollution control that are comparable to industry quality control standards for the production processes associated with this emission point. Authority for Requirement: 567 IAC 22.108(3) RLA Page 15 of 107 99-TV-050R4, 07/06/2020

Emission Point ID Number: EP-04 Associated Equipment Emission Unit 4.1 4.2 4.3 Emission Unit Description Meal Grinding Conveying Metered Flow Agent Control Equipment Raw Material Baghouse (CE 4) Soybeans Flow Agent Rated Capacity 95,000 bushels/day (each EU) Construction Permit 85-A-106-S5 Applicable Requirements Emission Limits (lb./hr, gr./dscf, lb./MMBtu, % opacity, etc.) The emissions from this emission point shall not exceed the levels specified below. Pollutant: Opacity Emission Limit(s): 40% (1) Authority for Requirement: DNR Construction Permit 85-A-106-S5 567 IAC 23.3(2) "d" (1) An exceedance of the indicator opacity of 10% will require the owner/operator to promptly investigate the emission unit and make corrections to operations or equipment associated with the exceedance. If exceedances continue after the corrections, the DNR may require additional proof to demonstrate compliance (e.g., stack testing). Pollutant: Particulate Matter (PM10) Emission Limit(s): 1.29 lb/hr Authority for Requirement: DNR Construction Permit 85-A-106-S5 Pollutant: Particulate Matter (PM) Emission Limit(s): 1.29 lb/hr, 0.1 gr/dscf Authority for Requirement: DNR Construction Permit 85-A-106-S5 567 IAC 23.4(7) NESHAP Applicability The Soybean Extraction Process is subject to Subpart A (General Provisions, 40 CFR §63.1 – 40 CFR §63.15) and Subpart GGGG (Solvent Extraction for Vegetable Oil Production, 40 CFR §63.2830 – 40 CFR §63.2872) of the National Emission Standards for Hazardous Air Pollutants (NESHAP). Authority for Requirement: DNR Construction Permit 85-A-106-S5 40 CFR 63 Subpart A 567 IAC 23.1(4)"a" 40 CFR 63 Subpart GGGG 567 IAC 23.1(4)"cg" Operating Requirements with Associated Monitoring and Recordkeeping All records as required by this permit shall be kept on-site for a minimum of five (5) years and shall be available for inspection by the Department. Records shall be legible and maintained in an orderly manner. The operating requirements and associated recordkeeping for this permit shall be: A. The owner or operator shall operate and maintain the control equipment according to manufacturer’s specifications and instructions. RLA Page 16 of 107 99-TV-050R4, 07/06/2020

i. The owner or operator shall maintain a record of all inspections and maintenance and any action resulting from the inspection and maintenance of the control equipment. Authority for Requirement: DNR Construction Permit 85-A-106-S5 Emission Point Characteristics The emission point shall conform to the specifications listed below. Stack Height, (ft, from the ground): 11.5 Stack Opening, (inches, dia.): 24 Exhaust Flow Rate (scfm): 15,000 Exhaust Temperature ( F): Ambient Discharge Style: Vertical unobstructed Authority for Requirement: DNR Construction Permit 85-A-106-S5 The temperature and flowrate are intended to be representative and characteristic of the design of the permitted emission point. The Department recognizes that the temperature and flow rate may vary with changes in the process and ambient conditions. If it is determined that either the temperature or flowrate above are different than the values stated, the owner or operator shall submit a request to the Department within thirty (30) days of the discovery to determine if a permit amendment is required or submit a permit application requesting to amend the permit. Monitoring Requirements The owner/operator of this equipment shall comply with the monitoring requirements listed below. Agency Approved Operation & Maintenance Plan Required? Yes No Facility Maintained Operation & Maintenance Plan Required? Yes No Compliance Assurance Monitoring (CAM) Plan Required? Yes No Facility operation and maintenance plans must be sufficient to yield reliable data from the relevant time period that are representative of the source’s compliance with the applicable requirements. The data pertaining to the plan shall be maintained on site for at least 5 years. The plan and associated recordkeeping provides documentation of this facility’s implementation of its obligation to operate according to good air pollution control practice. Good air pollution control practice is achieved by adoption of quality control standards in the operation and maintenance procedures for air pollution control that are comparable to industry quality control standards for the production processes associated with this emission point. Authority for Requirement: 567 IAC 22.108(3) RLA Page 17 of 107 99-TV-050R4,

EU-34.2 Nebraska Boiler - #2 fuel oil EU-34.3 Nebraska Boiler - soybean oil EU-34.4 Nebraska Boiler - animal fats EU-34.5 Nebraska Boiler - biodiesel heavies EU-34.6 Nebraska Boiler - biodiesel EP-34.2 EU-34.21 Nebraska Boiler (Heat Recover Stack) - natural gas 02-A-387-S1 EU-34.22 Nebraska Boiler (Heat Recover Stack) - #2 fuel oil