intent to issue air emission permit to ardent mills llc, lake city · 2019-10-10 · tfac 1: ardent...

DRAFT Air Individual Permit State Permit 15700034‐101

Permittee: Ardent Mills LLC

Facility name: Ardent Mills LLC ‐ Lake City Plant 905 W Marion St Lake City, MN 55041‐2007 Wabasha County

Expiration date: Non‐expiring Permit * All Title I Conditions do not expire State Permit: < > Permit characteristics: State; Limits to avoid Part 70/ Limits to avoid NSR; Limits to avoid NSR The emission units, control equipment and emission stacks at the stationary source authorized in this permit issuance are as described in the submittals listed in the Permit Applications Table. This permit issuance authorizes the Permittee to operate the stationary source at the address listed above unless otherwise noted in the permit. The Permittee must comply with all the conditions of the permit. Any changes or modifications to the stationary source must be performed in compliance with Minn. R. 7007.1150 to 7007.1500. Terms used in the permit are as defined in the state air pollution control rules unless the term is explicitly defined in the permit. Unless otherwise indicated, all the Minnesota rules cited as the origin of the permit terms are incorporated into the SIP under 40 CFR § 52.1220 and as such are enforceable by U.S. Environmental Protection Agency (EPA) Administrator or citizens under the Clean Air Act.

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

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

Table of Contents

Page

1. Permit applications table ............................................................................................................................................. 3 2. Where to send submittals ............................................................................................................................................ 4 3. Facility description ....................................................................................................................................................... 5 4. Summary of subject items ........................................................................................................................................... 6 5. Limits and other requirements .................................................................................................................................. 34 6. Submittal/action requirements ................................................................................................................................. 98 7. Appendices ............................................................................................................................................................... 107

Appendix A. Insignificant activities and general applicable requirements ............................................................ 107 Appendix B. Alternative Test Method for Opacity Determination of Emissions from Intermittent Dust‐Generating

Operations (alternative to Method 9). ............................................................................................................ 107

Permit issued: [month day, year] 15700034‐101 Permit expires: [month day, year] of 109

1. Permit applications table

Subsequent permit applications: Title description Application receipt date Action number State Individual Permit application

04/27/2018 15700034‐101

Final certified application 10/7/2019 15700034‐101


2. Where to send submittals

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

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

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

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

Send any application for a permit or permit amendment to:

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

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

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

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

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

Or Email a signed and scanned PDF copy to: [email protected] (for submittals related to stack testing) [email protected] (for other compliance submittals) (See complete email instructions in “Routine Air Report Instructions Letter” at http://www.pca.state.mn.us/nwqh472.)


3. Facility description

Ardent Mills ‐ Lake City Plant (Facility or Ardent Mills) operates a wheat flour mill and is located at 905 W Marion Street in Lake City, Wabasha County, Minnesota. The facility consists of grain receiving, elevators, grain cleaning, wheat mills, flour blending, storage, packaging, hammermilling, and a boiler. Ardent Mills processes wheat received into flour and middling (midds) for animal feed. Ardent Mills uses phosphine for fumigation. The main pollutants of concern are particulate matter (PM), particulate matter less than 10 micron (PM10), particulate matter less than 2.5 micron (PM2.5), and hazardous air pollutants (HAP). Ardent Mills uses fabric filter control equipment to reduce emissions of PM, PM10, and PM2.5.


4. Summary of subject items

SI ID: Description

Relationship type

Related SI ID: Description

TFAC 1: Ardent Mills LLC

ACTV 4: All IAs COMG 1: Flour Blending & Truck Loading

has members EQUI 287, EQUI 288, EQUI 289, EQUI 290, EQUI 291, EQUI 292, EQUI 293, EQUI 294

COMG 2: Feed Loadout has members EQUI 295, EQUI 296, EQUI 297, EQUI 298, EQUI 299, EQUI 300, EQUI 301, EQUI 302, EQUI 303, EQUI 304

EQUI 1: Rail and Truck Unload Pit

sends to STRU 1: Filter 01 Grain Receiving Stack Vent

EQUI 2: Rail Receiving Leg

sends to STRU 1: Filter 01 Grain Receiving Stack Vent

EQUI 2: Rail Receiving Leg

is controlled by

TREA 1: Fabric Filter ‐ Low Temp, T<180 Degrees F

EQUI 3: Elevator to Mill Wheat Leg

sends to STRU 2: Filter 02 Elevator Stack Grain Handling Vent

EQUI 3: Elevator to Mill Wheat Leg

is controlled by


EQUI 4: Elevator Unload Scale


EQUI 4: Elevator Unload Scale

is controlled by

TREA 2: Fabric Filter ‐ Low Temp, T<180

SI ID: Description

Relationship type

Related SI ID: Description Degrees F

EQUI 5: Elevator 4th Floor Clean Up Hole


EQUI 6: North Aspirator


EQUI 6: North Aspirator

is controlled by


EQUI 7: South Aspirator


EQUI 7: South Aspirator

is controlled by


EQUI 8: C‐14 Conveyor sends to STRU 2: Filter 02 Elevator Stack Grain Handling Vent

EQUI 8: C‐14 Conveyor is controlled by


EQUI 9: C‐12 Conveyor sends to STRU 2: Filter 02 Elevator Stack Grain Handling Vent

EQUI 9: C‐12 Conveyor is controlled by


EQUI 10: C‐15 Conveyor



is controlled by



sends to STRU 1: Filter 01 Grain Receiving

Permit Issued: [month day, year] 15700034‐101 Permit Expires: [month day, year] of 109

SI ID: Description

Relationship type

Related SI ID: Description Stack Vent


is controlled by


EQUI 12: Elevator 3rd Floor Cyclone


EQUI 12: Elevator 3rd Floor Cyclone

is controlled by


EQUI 13: Elevator 2nd Floor Cleanup Hole


EQUI 14: Elevator Basement Aspiration





is controlled by





is controlled by





is controlled by




EQUI 18: C‐21 is controlled TREA 2: Fabric

SI ID: Description

Relationship type


Conveyor by Filter ‐ Low Temp, T<180 Degrees F

EQUI 19: Mixed Wheat Leg


EQUI 19: Mixed Wheat Leg

is controlled by


EQUI 20: C‐Mill Surge Bin

sends to STRU 3: Filter 06 C‐Mill Cleaning House Stack Vent

EQUI 20: C‐Mill Surge Bin

is controlled by


EQUI 21: C‐Mill Technovator Cyclone


EQUI 21: C‐Mill Technovator Cyclone

is controlled by


EQUI 22: C‐Mill Feed Cyclone


EQUI 22: C‐Mill Feed Cyclone

is controlled by


EQUI 23: C‐Mill Screenings Cyclone


EQUI 23: C‐Mill Screenings Cyclone

is controlled by


EQUI 24: C‐Mill Combi‐Cleaner

sends to STRU 3: Filter 06 C‐Mill Cleaning


SI ID: Description

Relationship type

Related SI ID: Description House Stack Vent

EQUI 24: C‐Mill Combi‐Cleaner

is controlled by


EQUI 25: C‐MiII WTR Scourer


EQUI 25: C‐MiII WTR Scourer

is controlled by


EQUI 26: C‐Mill Wheat to Roll Scale


EQUI 26: C‐Mill Wheat to Roll Scale

is controlled by


EQUI 27: C‐Mill 1/2 BK Rollstand


EQUI 27: C‐Mill 1/2 BK Rollstand

is controlled by


EQUI 28: C‐Mill Clears Hopper


EQUI 28: C‐Mill Clears Hopper

is controlled by


EQUI 29: C‐Mill Red Dog Hopper


EQUI 29: C‐Mill Red Dog Hopper

is controlled by


SI ID: Description

Relationship type


EQUI 30: B/C Mill Corn Hopper


EQUI 30: B/C Mill Corn Hopper

is controlled by


EQUI 31: C‐Mill Temp Hopper


EQUI 31: C‐Mill Temp Hopper

is controlled by


EQUI 32: C‐Mill CH Screenings Scale Hopper


EQUI 32: C‐Mill CH Screenings Scale Hopper

is controlled by


EQUI 33: C‐Mill Clean Wheat Scale Hopper


EQUI 33: C‐Mill Clean Wheat Scale Hopper

is controlled by


EQUI 34: Hammer Mills Cyclone

sends to STRU 4: Filter 08 B‐Mill Cleaning House Stack Vent

EQUI 34: Hammer Mills Cyclone

is controlled by


EQUI 35: B‐Mill Bran Cyclone

sends to STRU 4: Filter 08 B‐Mill Cleaning House Stack


SI ID: Description

Relationship type

Related SI ID: Description Vent

EQUI 35: B‐Mill Bran Cyclone

is controlled by


EQUI 36: B‐Mill Shorts Cyclone


EQUI 36: B‐Mill Shorts Cyclone

is controlled by


EQUI 37: B‐Mill Screenings Cyclone


EQUI 37: B‐Mill Screenings Cyclone

is controlled by


EQUI 38: B‐Mill Combi‐Cleaner


EQUI 38: B‐Mill Combi‐Cleaner

is controlled by


EQUI 39: Screenings Sifter Feed Conveyor


EQUI 39: Screenings Sifter Feed Conveyor

is controlled by


EQUI 40: B/C Mills Feed Hopper


EQUI 40: B/C Mills Feed Hopper

is controlled by


SI ID: Description

Relationship type


EQUI 41: B‐Mill Wheat to Temper Hopper


EQUI 41: B‐Mill Wheat to Temper Hopper

is controlled by


EQUI 42: Cleaning House 1st Floor Feed ln


EQUI 43: B‐Mill Cleaning House Dirty Wheat Scale


EQUI 43: B‐Mill Cleaning House Dirty Wheat Scale

is controlled by


EQUI 44: B‐Mill Tecnovator Cyclone


EQUI 44: B‐Mill Tecnovator Cyclone

is controlled by


EQUI 45: B‐Mill Wheat to Mill Hopper


EQUI 45: B‐Mill Wheat to Mill Hopper

is controlled by


EQUI 46: A‐Mill Wheat to Temper Hopper

sends to STRU 5: Filter 27 A‐Mill Cleaning House & Feed Loadout Stack Vent

EQUI 46: A‐Mill Wheat to Temper Hopper

is controlled by



SI ID: Description

Relationship type


EQUI 47: A‐Mill Screenings Conveyor


EQUI 47: A‐Mill Screenings Conveyor

is controlled by


EQUI 48: A‐Mill Feed to Bin Hopper


EQUI 48: A‐Mill Feed to Bin Hopper

is controlled by


EQUI 49: A‐Mill Wheat to Mill Scale Hopper


EQUI 49: A‐Mill Wheat to Mill Scale Hopper

is controlled by


EQUI 50: A‐Mill Screenings Hopper


EQUI 50: A‐Mill Screenings Hopper

is controlled by


EQUI 51: A‐Mill Temper Bin Collection Screw


EQUI 51: A‐Mill Temper Bin Collection Screw

is controlled by


SI ID: Description

Relationship type


EQUI 52: A‐Mill Wheat to Mill Hopper


EQUI 52: A‐Mill Wheat to Mill Hopper

is controlled by


EQUI 53: A‐Mill Combi Cleaner


EQUI 53: A‐Mill Combi Cleaner

is controlled by


EQUI 54: A‐Mill Wheat to Surge Bin Aspiration Fan


EQUI 54: A‐Mill Wheat to Surge Bin Aspiration Fan

is controlled by


EQUI 55: A‐Mill Wheat to Surge Bin Scourer


EQUI 55: A‐Mill Wheat to Surge Bin Scourer

is controlled by


EQUI 56: A‐Mill Pre Break L12 Rollstand


EQUI 56: A‐Mill Pre Break L12 Rollstand

is controlled by



SI ID: Description

Relationship type


EQUI 57: A‐Mill Pre Break 3/4 Rollstand



is controlled by





is controlled by


EQUI 59: Cleaning House 5th Floor Feed‐In Station


EQUI 60: A‐Miil Technovator Hopper


EQUI 60: A‐Miil Technovator Hopper

is controlled by


EQUI 61: A‐Mill Screenings Cyclone 1



is controlled by



sends to STRU 5: Filter 27 A‐Mill Cleaning

SI ID: Description

Relationship type

Related SI ID: Description House & Feed Loadout Stack Vent


is controlled by





is controlled by


EQUI 64: Elevator Screenings Cyclone


EQUI 64: Elevator Screenings Cyclone

is controlled by


EQUI 65: A‐Mill Wheat Temper Receiving Hopper


EQUI 65: A‐Mill Wheat Temper Receiving Hopper

is controlled by


EQUI 66: A‐Mill P‐13 Cyclone


EQUI 66: A‐Mill P‐13 Cyclone

is controlled by


EQUI 67: A‐Mill 40 Cyclone

sends to STRU 6: Filter 11 A‐Mill Pneumatics


SI ID: Description

Relationship type



is controlled by



sends to STRU 6: Filter 11 A‐Mill Pneumatics Stack Vent


is controlled by





is controlled by


EQUI 70: Cut Stream 3‐Way Splitter Cyclone


EQUI 70: Cut Stream 3‐Way Splitter Cyclone

is controlled by


EQUI 71: A‐MiII 3 BRK 1(3) Cyclone

is controlled by


EQUI 72: A‐MiII 2 BRK 1,2 (4) Cyclone


EQUI 72: A‐MiII 2 BRK 1,2 (4) Cyclone

is controlled by


EQUI 73: A‐MiII 3 BRK 2 (5) Cyclone



is controlled by


EQUI 74: A‐MiII 4 BRK sends to STRU 6: Filter

SI ID: Description

Relationship type


1 (6) Cyclone 11 A‐Mill Pneumatics Stack Vent


is controlled by


EQUI 75: A.MiII A,B SIZ (8) Cyclone


EQUI 75: A.MiII A,B SIZ (8) Cyclone

is controlled by


EQUI 76: A‐Mill A,B SIZ (8) Cyclone


EQUI 76: A‐Mill A,B SIZ (8) Cyclone

is controlled by


EQUI 77: A‐Mill C SIZ (9) Cyclone


EQUI 77: A‐Mill C SIZ (9) Cyclone

is controlled by


EQUI 78: A‐Mill SIZ A/B (Split w/ 8) Cylcone


EQUI 78: A‐Mill SIZ A/B (Split w/ 8) Cylcone

is controlled by


EQUI 79: A‐Mill 1 Midds C (10) Cyclone


EQUI 79: A‐Mill 1 Midds C (10) Cyclone

is controlled by


EQUI 80: A‐Mill 1 Midds B (11) Cyclone



SI ID: Description

Relationship type


EQUI 80: A‐Mill 1 Midds B (11) Cyclone

is controlled by


EQUI 81: A‐Mill 1 Mids A (12) Cyclone


EQUI 81: A‐Mill 1 Mids A (12) Cyclone

is controlled by


EQUI 82: A‐Mill 5 Bran F (13) Cyclone


EQUI 82: A‐Mill 5 Bran F (13) Cyclone

is controlled by


EQUI 83: A‐Mill 1,2,3 BC (14) Cyclone



is controlled by





is controlled by


EQUI 85: A‐MiII 1 BRK Cyclone



is controlled by




EQUI 86: A‐MiII 2 BRK is controlled TREA 6: Fabric

SI ID: Description

Relationship type


Cyclone by Filter ‐ Low Temp, T<180 Degrees F

EQUI 87: A 1 MB Rollstand


EQUI 87: A 1 MB Rollstand

is controlled by


EQUI 88: A 1 MA Rollstand


EQUI 88: A 1 MA Rollstand

is controlled by


EQUI 89: A Mill Surge Bin


EQUI 89: A Mill Surge Bin

is controlled by


EQUI 90: A 1 BRK Airlock Hopper



is controlled by





is controlled by


EQUI 92: A Flour to Patent Splitter Airlock Hopper


EQUI 92: A Flour to Patent Splitter Airlock Hopper

is controlled by



SI ID: Description

Relationship type


EQUI 93: Germ Aspirator Cyclone


EQUI 93: Germ Aspirator Cyclone

is controlled by


EQUI 94: A‐MiII 5 BRK Sift to BR Dust 1,2,3 (38) Cyclone


EQUI 94: A‐MiII 5 BRK Sift to BR Dust 1,2,3 (38) Cyclone

is controlled by


EQUI 95: A‐Mill Shorts (37) Cyclone


EQUI 95: A‐Mill Shorts (37) Cyclone

is controlled by


EQUI 96: A.MiII 3 LG (34) Cyclone


EQUI 96: A.MiII 3 LG (34) Cyclone

is controlled by


EQUI 97: A‐MiII 2 LG (35) Cyclone



is controlled by


EQUI 98: A‐MiII BR‐SH Dust to Sift (36) Cyclone


EQUI 98: A‐MiII BR‐SH Dust to Sift (36) Cyclone

is controlled by


EQUI 99: A‐MiII 2 CLR sends to STRU 7: Filter

SI ID: Description

Relationship type


(50) Cyclone 12 A‐Mill Pneumatics Stack Vent

EQUI 99: A‐MiII 2 CLR (50) Cyclone

is controlled by


EQUI 100: A‐Mill 2 Mids (16) Cyclone



is controlled by





is controlled by





is controlled by





is controlled by





is controlled by





SI ID: Description

Relationship type



is controlled by





is controlled by





is controlled by





is controlled by





is controlled by


EQUI 110: A‐Mill 1 Tails (26) Cyclone


EQUI 110: A‐Mill 1 Tails (26) Cyclone

is controlled by


EQUI 111: A‐Mill 2 SIZ (27) Cyclone


EQUI 111: A‐Mill 2 SIZ is controlled TREA 7: Fabric

SI ID: Description

Relationship type


(27) Cyclone by Filter ‐ Low Temp, T<180 Degrees F

EQUI 112: A‐Mill 1 Qual (28) Cyclone


EQUI 112: A‐Mill 1 Qual (28) Cyclone

is controlled by


EQUI 113: A‐Mill Suction (29) Cyclone


EQUI 113: A‐Mill Suction (29) Cyclone

is controlled by


EQUI 114: A‐Mill Wht Germ (39) Cyclone


EQUI 114: A‐Mill Wht Germ (39) Cyclone

is controlled by


EQUI 115: A‐MiII 4 BC (30) Cyclone


EQUI 115: A‐MiII 4 BC (30) Cyclone

is controlled by


EQUI 116: A‐Mill 2 Talls (31) Cyclone


EQUI 116: A‐Mill 2 Talls (31) Cyclone

is controlled by





is controlled by



SI ID: Description

Relationship type





is controlled by


EQUI 119: A‐Mill 5 BRK to Roll l Cyclone


EQUI 119: A‐Mill 5 BRK to Roll l Cyclone

is controlled by


EQUI 120: A‐Mill 4 BRK to Roll 2 Cyclone


EQUI 120: A‐Mill 4 BRK to Roll 2 Cyclone

is controlled by


EQUI 121: A Cyclone Airlock 41 Hopper


EQUI 121: A Cyclone Airlock 41 Hopper

is controlled by


EQUI 122: A‐Mill 1 MC to Roll (44) Cyclone


EQUI 122: A‐Mill 1 MC to Roll (44) Cyclone

is controlled by


EQUI 123: A‐Mill 2 MC to Roll (4s) Cyclone


EQUI 123: A‐Mill 2 MC to Roll (4s) Cyclone

is controlled by


EQUI 124: A‐Mill P4 sends to STRU 7: Filter

SI ID: Description

Relationship type


Purifier (46) Cyclone 12 A‐Mill Pneumatics Stack Vent

EQUI 124: A‐Mill P4 Purifier (46) Cyclone

is controlled by


EQUI 125: A‐Mill P13 (47) Cyclone



is controlled by





is controlled by


EQUI 127: A‐Mill Germ/1T (48) Cyclone


EQUI 127: A‐Mill Germ/1T (48) Cyclone

is controlled by


EQUI 128: A‐Mill 2 SIZ to Roll (53) Cyclone


EQUI 128: A‐Mill 2 SIZ to Roll (53) Cyclone

is controlled by


EQUI 129: A‐Mill (50) Cyclone


EQUI 129: A‐Mill (50) Cyclone

is controlled by


EQUI 130: A‐Mill PAT/CLR (51) Cyclone



SI ID: Description

Relationship type


EQUI 130: A‐Mill PAT/CLR (51) Cyclone

is controlled by


EQUI 131: A‐Mill 7M to Roll (52) Cyclone


EQUI 131: A‐Mill 7M to Roll (52) Cyclone

is controlled by


EQUI 132: A‐Mill 2T to Roll (54) Cyclone


EQUI 132: A‐Mill 2T to Roll (54) Cyclone

is controlled by


EQUI 133: A Bran Duster 1

sends to STRU 8: Filter 13 A Mill Purifiers Stack Vent


is controlled by





is controlled by





is controlled by


EQUI 136: A P‐18 2/1 CLR Receiving Cyclone


EQUI 136: A P‐18 2/1 is controlled TREA 8: Fabric

SI ID: Description

Relationship type


CLR Receiving Cyclone by Filter ‐ Low Temp, T<180 Degrees F

EQUI 137: A P4 Purifier sends to STRU 8: Filter 13 A Mill Purifiers Stack Vent

EQUI 137: A P4 Purifier is controlled by


EQUI 138: A P9 & P13 Purifier


EQUI 138: A P9 & P13 Purifier

is controlled by


EQUI 139: A Shorts Duster


EQUI 139: A Shorts Duster

is controlled by


EQUI 140: A Shorts Duster 2


EQUI 140: A Shorts Duster 2

is controlled by


EQUI 141: A Patent Scale


EQUI 141: A Patent Scale

is controlled by


EQUI 142: Farina Purifier Airlock Hopper


EQUI 142: Farina Purifier Airlock Hopper

is controlled by



SI ID: Description

Relationship type


EQUI 143: Germ Final Cyclone


EQUI 143: Germ Final Cyclone

is controlled by


EQUI 144: A Bran & Shorts Airlock Hopper


EQUI 144: A Bran & Shorts Airlock Hopper

is controlled by


EQUI 145: A Red Dog Duster Airlock Hopper


EQUI 145: A Red Dog Duster Airlock Hopper

is controlled by


EQUI 146: Germ Aspirator Suction Cyclone


EQUI 146: Germ Aspirator Suction Cyclone

is controlled by


EQUI 147: A Patent Splitter Cyclone


EQUI 147: A Patent Splitter Cyclone

is controlled by


EQUI 148: Filter 14 Suction Air Horizontal Splitter


EQUI 148: Filter 14 Suction Air Horizontal Splitter

is controlled by


EQUI 149: A P2 Purifier sends to STRU 9: Filter

SI ID: Description

Relationship type

Related SI ID: Description 14 A Mill Purifiers Stack Vent



EQUI 150: A P1 Purifier sends to STRU 9: Filter 14 A Mill Purifiers Stack Vent



EQUI 151: Germ Classifier


EQUI 151: Germ Classifier

is controlled by


EQUI 152: Farina Purifier Cyclone 1

sends to STRU 10: Filter 15 B Mill Purifiers Stack Vent


is controlled by





is controlled by


EQUI 154: B P1 & P2 Purifier



is controlled by



SI ID: Description

Relationship type





is controlled by





is controlled by





is controlled by





is controlled by


EQUI 159: B Floor Cut In to Mill


EQUI 159: B Floor Cut In to Mill

is controlled by


EQUI 160: B Patent Scale


EQUI 160: B Patent is controlled TREA 10:

SI ID: Description

Relationship type


Scale by Fabric Filter ‐ Low Temp, T<180 Degrees F

EQUI 161: B Red Dog Airlock Hopper


EQUI 161: B Red Dog Airlock Hopper

is controlled by


EQUI 162: B Clear to Bin Airlock Hopper


EQUI 162: B Clear to Bin Airlock Hopper

is controlled by


EQUI 163: B Patent to Sifter Airlock Hopper


EQUI 163: B Patent to Sifter Airlock Hopper

is controlled by


EQUI 164: B 2nd BRK Rollstand


EQUI 164: B 2nd BRK Rollstand

is controlled by


EQUI 165: B Patent to Bin Airlock Hopper


EQUI 165: B Patent to Bin Airlock Hopper

is controlled by


EQUI 166: B Patent 3 sends to STRU 10: Filter


SI ID: Description

Relationship type


Way Splitter Cyclone 15 B Mill Purifiers Stack Vent

EQUI 166: B Patent 3 Way Splitter Cyclone

is controlled by


EQUI 167: B Patent Flour Cyclone


EQUI 167: B Patent Flour Cyclone

is controlled by


EQUI 168: B 3 BRK F (5) Cyclone

sends to STRU 11: Filter 16 B Mill Pneumatics Stack Vent


is controlled by


EQUI 169: B 3 BRK 1 (7) Cyclone



is controlled by


EQUI 170: B BRK Cuts (9) Cyclone


EQUI 170: B BRK Cuts (9) Cyclone

is controlled by


EQUI 171: B 1 MF (11) Cyclone


EQUI 171: B 1 MF (11) Cyclone

is controlled by

TREA 11: Fabric Filter ‐

SI ID: Description

Relationship type

Related SI ID: Description Low Temp, T<180 Degrees F

EQUI 172: B 2 Mids (13) Cyclone


EQUI 172: B 2 Mids (13) Cyclone

is controlled by





is controlled by





is controlled by





is controlled by





is controlled by



sends to STRU 11: Filter 16 B Mill


SI ID: Description

Relationship type

Related SI ID: Description Pneumatics Stack Vent


is controlled by


EQUI 178: B C SIZ (12) Cyclone


EQUI 178: B C SIZ (12) Cyclone

is controlled by


EQUI 179: B 1 MC (14) Cyclone


EQUI 179: B 1 MC (14) Cyclone

is controlled by


EQUI 180: B 1T (21) Cyclone



is controlled by


EQUI 181: B 5M Cyclone


EQUI 181: B 5M Cyclone

is controlled by


EQUI 182: B 3M (18) Cyclone



is controlled by

TREA 11: Fabric Filter ‐ Low Temp,

SI ID: Description

Relationship type

Related SI ID: Description T<180 Degrees F




is controlled by





is controlled by





is controlled by


EQUI 186: B Pur Filt to 2T SIFT (28) Cyclone


EQUI 186: B Pur Filt to 2T SIFT (28) Cyclone

is controlled by





is controlled by



sends to STRU 11: Filter 16 B Mill Pneumatics


SI ID: Description

Relationship type



is controlled by


EQUI 189: B Qual (17) Cyclone


EQUI 189: B Qual (17) Cyclone

is controlled by





is controlled by


EQUI 191: B F SIZ (10) Cyclone


EQUI 191: B F SIZ (10) Cyclone

is controlled by


EQUI 192: B 4 BRK Dust Sift (23) Cyclone


EQUI 192: B 4 BRK Dust Sift (23) Cyclone

is controlled by





is controlled by

TREA 11: Fabric Filter ‐ Low Temp, T<180 Degrees

SI ID: Description

Relationship type

Related SI ID: Description F




is controlled by


EQUI 195: B 1 LG (29) Cyclone



is controlled by





is controlled by





is controlled by





is controlled by


EQUI 199: B (34) Cyclone



SI ID: Description

Relationship type


EQUI 199: B (34) Cyclone

is controlled by


EQUI 200: C P3 & P4 Purifiers

sends to STRU 12: Filter 24 C Mill Purifiers Stack Vent


is controlled by





is controlled by


EQUI 202: C P1 & P2 Farina Purifiers


EQUI 202: C P1 & P2 Farina Purifiers

is controlled by


EQUI 203: C Mill Pneumatic Vibrator Hopper


EQUI 203: C Mill Pneumatic Vibrator Hopper

is controlled by


EQUI 204: C 3/4 1 Rollstand


EQUI 204: C 3/4 1 Rollstand

is controlled by


SI ID: Description

Relationship type


EQUI 205: C Bran Rollstand


EQUI 205: C Bran Rollstand

is controlled by


EQUI 206: C 4/5 BRC Feed Conveyor


EQUI 206: C 4/5 BRC Feed Conveyor

is controlled by


EQUI 207: C 4/5 BKC Rollstand


EQUI 207: C 4/5 BKC Rollstand

is controlled by


EQUI 208: C 1/2 MC 1 Rollstand


EQUI 208: C 1/2 MC 1 Rollstand

is controlled by


EQUI 209: C 3 BK 2 Rollstand


EQUI 209: C 3 BK 2 Rollstand

is controlled by


EQUI 210: C FL 3 CLR to Bin Airlock Hopper


EQUI 210: C FL 3 CLR is controlled TREA 12:


SI ID: Description

Relationship type


to Bin Airlock Hopper by Fabric Filter ‐ Low Temp, T<180 Degrees F

EQUI 211: C FL 1 Patent to Bin Airlock Bench Hopper


EQUI 211: C FL 1 Patent to Bin Airlock Bench Hopper

is controlled by


EQUI 212: C Feed to B CH Airlock Hopper


EQUI 212: C Feed to B CH Airlock Hopper

is controlled by


EQUI 213: C FL 2 to RBLT Airlock Hopper



is controlled by





is controlled by


EQUI 215: C FL 1 to RBLT Cyclone



is controlled by


EQUI 216: C FL 2 to sends to STRU 12: Filter

SI ID: Description

Relationship type


RBLT Cyclone 24 C Mill Purifiers Stack Vent


is controlled by


EQUI 217: C Feed to RBLT Cyclone

sends to STRU 13: Filter 26 C Mill Pneumatics Stack Vent

EQUI 217: C Feed to RBLT Cyclone

is controlled by





is controlled by


EQUI 219: C 1/2 BK 1&2 (2) Cyclone


EQUI 219: C 1/2 BK 1&2 (2) Cyclone

is controlled by


EQUI 220: C 1/2 BK 1 (3) Cyclone


EQUI 220: C 1/2 BK 1 (3) Cyclone

is controlled by


EQUI 221: C 1/2 BK 2 Cyclone


EQUI 221: C 1/2 BK 2 Cyclone

is controlled by



SI ID: Description

Relationship type

Related SI ID: Description Low Temp, T<180 Degrees F

EQUI 222: C GR 3 (23) Cyclone


EQUI 222: C GR 3 (23) Cyclone

is controlled by


EQUI 223: C GR 1/22 (22) Cyclone


EQUI 223: C GR 1/22 (22) Cyclone

is controlled by


EQUI 224: C Bran Relift Cyclone


EQUI 224: C Bran Relift Cyclone

is controlled by


EQUI 225: C 3 BK 1 (9) Cyclone


EQUI 225: C 3 BK 1 (9) Cyclone

is controlled by


EQUI 226: C 3 BKC 2 (13) Cyclone


EQUI 226: C 3 BKC 2 (13) Cyclone

is controlled by


EQUI 227: C Bran Dust 2 (15) Cyclone

sends to STRU 13: Filter 26 C Mill

SI ID: Description

Relationship type

Related SI ID: Description Pneumatics Stack Vent


is controlled by


EQUI 228: C 3/4 M (16) Cyclone



is controlled by


EQUI 229: C 5/6 Mids (18) Cyclone


EQUI 229: C 5/6 Mids (18) Cyclone

is controlled by


EQUI 230: C B SIZ (1) Cyclone


EQUI 230: C B SIZ (1) Cyclone

is controlled by


EQUI 231: C A SIZ (4) Cyclone


EQUI 231: C A SIZ (4) Cyclone

is controlled by


EQUI 232: C 1/2 MC 1 (6) Cyclone



is controlled by



SI ID: Description

Relationship type





is controlled by


EQUI 234: C 1/2 MF (8) Cyclone


EQUI 234: C 1/2 MF (8) Cyclone

is controlled by


EQUI 235: C Qual (10) Cyclone


EQUI 235: C Qual (10) Cyclone

is controlled by


EQUI 236: C Filter Dust (11) Cyclone


EQUI 236: C Filter Dust (11) Cyclone

is controlled by





is controlled by


EQUI 238: C 4/5 BKC (14) Cyclone

sends to STRU 13: Filter 26 C Mill Pneumatics

SI ID: Description

Relationship type


EQUI 238: C 4/5 BKC (14) Cyclone

is controlled by


EQUI 239: C 4/5 BKF (17) Cyclone


EQUI 239: C 4/5 BKF (17) Cyclone

is controlled by


EQUI 240: C 1 TAIL (19) Cyclone


EQUI 240: C 1 TAIL (19) Cyclone

is controlled by


EQUI 241: C 1/2 LG (20) Cyclone


EQUI 241: C 1/2 LG (20) Cyclone

is controlled by





is controlled by


EQUI 243: L/O System 1 Collection Airlock Hopper

sends to STRU 14: Filter 17 Flour Blending Stack Vent; Kice


is controlled by

TREA 14: Fabric Filter ‐ Low Temp, T<180 Degrees


SI ID: Description

Relationship type

Related SI ID: Description F




is controlled by





is controlled by


EQUI 246: L/O Filter 17 Discharge Airlock Hopper


EQUI 246: L/O Filter 17 Discharge Airlock Hopper

is controlled by


EQUI 247: L/O Germ Collection Airlock Hopper


EQUI 247: L/O Germ Collection Airlock Hopper

is controlled by


EQUI 248: A Track Aspiration 1



is controlled by




SI ID: Description

Relationship type



is controlled by





is controlled by





is controlled by


EQUI 252: L/O System 1 Flour Collection Conveyor



is controlled by





is controlled by





is controlled by



SI ID: Description

Relationship type


EQUI 255: Farina Collection Cyclone


EQUI 255: Farina Collection Cyclone

is controlled by


EQUI 256: L/O Truck Transfer Cyclone


EQUI 256: L/O Truck Transfer Cyclone

is controlled by


EQUI 257: L/O System 1 Cyclone

sends to STRU 15: Filter 18 Bulk Plant Stack Vent


is controlled by





is controlled by





is controlled by


EQUI 260: Flour Storage Bin 1



is controlled by


SI ID: Description

Relationship type





is controlled by





is controlled by





is controlled by





is controlled by





is controlled by





is controlled by



sends to STRU 15: Filter 18 Bulk Plant


SI ID: Description

Relationship type



is controlled by





is controlled by





is controlled by


EQUI 270: C Patent Flour Conveyor Cyclone


EQUI 270: C Patent Flour Conveyor Cyclone

is controlled by


EQUI 271: A Patent Flour Conveyor Cyclone


EQUI 271: A Patent Flour Conveyor Cyclone

is controlled by


EQUI 272: Farina Final Product Sifter Cyclone


EQUI 272: Farina Final Product Sifter Cyclone

is controlled by




EQUI 273: Flour is controlled TREA 15:

SI ID: Description

Relationship type


Storage Bin 11 by Fabric Filter ‐ Low Temp, T<180 Degrees F




is controlled by





is controlled by





is controlled by





is controlled by





is controlled by





is controlled by



SI ID: Description

Relationship type





is controlled by





is controlled by





is controlled by


EQUI 283: Off Flour Bin sends to STRU 15: Filter 18 Bulk Plant Stack Vent

EQUI 283: Off Flour Bin is controlled by


EQUI 284: Final Product Garner Scale System 1



is controlled by





is controlled by


SI ID: Description

Relationship type





is controlled by


EQUI 287: Truck L/O Bin 1

sends to STRU 16: Filter 19 Truck L/O Stack Vent


is controlled by





is controlled by





is controlled by





is controlled by





is controlled by



sends to STRU 16: Filter 19 Truck L/O


SI ID: Description

Relationship type



is controlled by





is controlled by





is controlled by


EQUI 295: B&C Mill Feed Airlock Cyclone


EQUI 296: Feed Distribution Center Airlock Cyclone


EQUI 297: Feed Distribution South Airlock Cyclone


EQUI 298: Feed Distribution South Conveyor


EQUI 299: Feed Distribution Center Conveyor

sends to STRU 5: Filter 27 A‐Mill Cleaning House & Feed

SI ID: Description

Relationship type

Related SI ID: Description Loadout Stack Vent

EQUI 300: Feed Distribution Cross Conveyor


EQUI 301: South Feed Bins Collection Screw


EQUI 302: North Feed Bins Collection Screw


EQUI 303: Truck Feed Loadout Screw Conveyor


EQUI 304: Feed Loadout Hood


EQUI 305: Boiler sends to STRU 17: Boiler Stack Vent

EQUI 306: Hoffman Vacuum A

sends to STRU 18: Millhouse ‐ Hoffman Vacuum System A Stack Vent

EQUI 306: Hoffman Vacuum A

is controlled by


EQUI 307: Hoffman Vacuum B

sends to STRU 19: Millhouse ‐ Hoffman Vacuum


SI ID: Description

Relationship type

Related SI ID: Description System B Stack Vent

EQUI 307: Hoffman Vacuum B

is controlled by


FUGI 4: Fugitive HAP Sources (Fumigation, Preservation, etc.)

STRU 1: Filter 01 Grain Receiving Stack Vent

STRU 2: Filter 02 Elevator Stack Grain Handling Vent

STRU 3: Filter 06 C‐Mill Cleaning House Stack Vent

STRU 4: Filter 08 B‐Mill Cleaning House Stack Vent

STRU 5: Filter 27 A‐Mill Cleaning House & Feed Loadout Stack Vent

STRU 6: Filter 11 A‐Mill Pneumatics Stack Vent

STRU 7: Filter 12 A‐Mill Pneumatics Stack Vent

STRU 8: Filter 13 A Mill Purifiers Stack Vent

STRU 9: Filter 14 A Mill Purifiers Stack Vent

STRU 10: Filter 15 B Mill Purifiers Stack Vent

STRU 11: Filter 16 B Mill Pneumatics Stack Vent

STRU 12: Filter 24 C Mill Purifiers Stack Vent

STRU 13: Filter 26 C Mill Pneumatics Stack Vent

STRU 14: Filter 17 Flour Blending Stack Vent; Kice

STRU 15: Filter 18 Bulk Plant Stack Vent

STRU 16: Filter 19

SI ID: Description

Relationship type


Truck L/O Stack Vent STRU 17: Boiler Stack Vent

STRU 18: Millhouse ‐ Hoffman Vacuum System A Stack Vent

STRU 19: Millhouse ‐ Hoffman Vacuum System B Stack Vent

STRU 20: Truck/Rail Unload Shed

STRU 21: Grain Elevator Leg House

STRU 22: Grain Elevator OId House Storage Bins

STRU 23: Grain Elevator New House Storage Bins

STRU 24: Cleaning House & A Mill

STRU 25: B & C Mills STRU 26: Bulk Plant STRU 27: Truck Load Out

STRU 28: Rail Load Out STRU 29: Feed Plant STRU 30: Feed Load Out Shed

STRU 31: Boiler Room STRU 32: Maintenance Shop (No Stacks/Vents)

STRU 33: Warehouse (No Stacks/Vents)

STRU 34: Office (No Stacks/Vents)







SI ID: Description

Relationship type


Low Temp, T<180 Degrees F TREA 6: Fabric Filter ‐ Low Temp, T<180 Degrees F







SI ID: Description

Relationship type


Degrees F TREA 13: Fabric Filter ‐ Low Temp, T<180 Degrees F







5. Limits and other requirements

Requirement number Requirement and citation

TFAC 1 Ardent Mills LLC

5.1.1 Process Throughput <= 402,960 tons per year 12‐month rolling sum of grain received to be calculated by the 15th day of each month for the previous 12‐month period as described in this permit. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.1.2 Process Throughput: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain the total quantity of grain received at the facility in tons. Records shall be based on written or electronic records. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.1.3 Process Throughput: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total quantity of grain received for the previous calendar month using the daily throughput records as required by this permit; and 2) The 12‐month rolling sum of grain received for the previous 12‐month period by summing the monthly records for the previous 12 months. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.1.4 The Permittee shall clean up commodities 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. 7011.1005, subp. 1(A)]

5.1.5 Permit Appendices: This permit contains appendices as listed in the permit Table of Contents. The Permittee shall comply with all requirements contained in Appendix A. insignificant Activities and General Applicable Requirements and Appendix B. Alternative Test Method for Opacity Determination of Emissions from Intermittent Dust‐Generating Operations. [Minn. R. 7007.0800, subp. 2(A)]

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

5.1.7 Comply with Fugitive Emission Control Plan: The Permittee shall follow the actions and recordkeeping specified in the fugitive dust control plan in Appendix C of this permit. If the Commissioner determines the Permittee is out of compliance with Minn. R. 7011.0150 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. [Minn. R. 7007.0100, Minn. R. 7007.0800, subp. 2, Minn. R. 7009.0020, Minn. R. 7011.0150, Minn. Stat. 116.07, subd. 4a]

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

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


Requirement number Requirement and citation Minn. R. 7007.0800, subp. 2(A)]

5.1.10 Operation and Maintenance Plan: Retain at the stationary source an operation and maintenance plan for all air pollution control equipment. At a minimum, the O & M plan shall identify all air pollution control equipment and control practices and shall include a preventative maintenance program for the equipment and practices, a description of (the minimum but not necessarily the only) corrective actions to be taken to restore the equipment and practices to proper operation to meet applicable permit conditions, a description of the employee training program for proper operation and maintenance of the control equipment and practices, and the records kept to demonstrate plan implementation. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 16(J)]

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

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

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

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

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

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

5.1.17 Performance Test Notifications and Submittals: Performance Test Notification and 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 The Notification, Test Plan, and Test Report must be submitted in a format specified by the commissioner. [Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2035, subps. 1‐2]

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

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


Requirement number Requirement and citation in this permit. [Minn. R. 7007.0800, subp. 4(D)]

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

5.1.21 Recordkeeping: Retain all records at the stationary source, unless otherwise specified within this permit, for a period of five (5) years from the date of monitoring, sample, measurement, or report. Records which must be retained at this location include all calibration and maintenance records, all original recordings for continuous monitoring instrumentation, and copies of all reports required by the permit. Records must conform to the requirements listed in Minn. R. 7007.0800, subp. 5(A). [Minn. R. 7007.0800, subp. 5(C)]

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

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

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

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

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

5.1.27 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


Requirement number Requirement and citation description: 1. the cause of the deviation; 2. the exact dates of the period of the deviation, if the deviation has been corrected; 3. whether or not the deviation has been corrected; 4. the anticipated time by which the deviation is expected to be corrected, if not yet corrected; and 5. steps taken or planned to reduce, eliminate, and prevent reoccurrence of the deviation. [Minn. R. 7019.1000, subp. 1]

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

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

5.1.30 Emission Inventory Report: due on or before April 1 of each calendar year following permit issuance. Submit in a format specified by the Commissioner. [Minn. R. 7019.3000‐7019.3100]

5.1.31 Emission Fees: due 30 days after receipt of an MPCA bill. [Minn. R. 7002.0005‐7002.0085]

COMG 1 Flour Blending & Truck Loading

5.2.1 Opacity <= 10 percent opacity from truck loading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(B)]

COMG 2 Feed Loadout

5.3.1 Opacity <= 10 percent opacity from truck loading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(B)]

EQUI 1 Rail and Truck Unload Pit

5.4.1 Opacity <= 5 percent opacity from truck unloading stations, railcar unloading stations, railcar loading stations, and handling operation fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]

EQUI 2 Rail Receiving Leg

5.5.1 The Permittee shall vent emissions from EQUI 2 to control equipment meeting the requirements of TREA 1 whenever EQUI 2 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

EQUI 3 Elevator to Mill Wheat Leg



EQUI 4 Elevator Unload Scale


5.7.2 The Permittee shall vent emissions from EQUI 4 to control equipment meeting the requirements of


Requirement number Requirement and citation TREA 2 whenever EQUI 4 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

EQUI 6 North Aspirator



EQUI 7 South Aspirator



EQUI 8 C‐14 Conveyor












EQUI 12 Elevator 3rd Floor Cyclone

















EQUI 19 Mixed Wheat Leg



EQUI 20 C‐Mill Surge Bin


EQUI 21 C‐Mill Technovator Cyclone


EQUI 22 C‐Mill Feed Cyclone


EQUI 23 C‐Mill Screenings Cyclone




EQUI 24 C‐Mill Combi‐Cleaner


EQUI 25 C‐MiII WTR Scourer


EQUI 26 C‐Mill Wheat to Roll Scale


EQUI 27 C‐Mill 1/2 BK Rollstand


EQUI 28 C‐Mill Clears Hopper


EQUI 29 C‐Mill Red Dog Hopper


EQUI 30 B/C Mill Corn Hopper


EQUI 31 C‐Mill Temp Hopper


EQUI 32 C‐Mill CH Screenings Scale Hopper


EQUI 33 C‐Mill Clean Wheat Scale Hopper


EQUI 34 Hammer Mills Cyclone


EQUI 35 B‐Mill Bran Cyclone




EQUI 36 B‐Mill Shorts Cyclone


EQUI 37 B‐Mill Screenings Cyclone


EQUI 38 B‐Mill Combi‐Cleaner


EQUI 39 Screenings Sifter Feed Conveyor


EQUI 40 B/C Mills Feed Hopper


EQUI 41 B‐Mill Wheat to Temper Hopper


EQUI 43 B‐Mill Cleaning House Dirty Wheat Scale


EQUI 44 B‐Mill Tecnovator Cyclone


EQUI 45 B‐Mill Wheat to Mill Hopper


EQUI 46 A‐Mill Wheat to Temper Hopper


EQUI 47 A‐Mill Screenings Conveyor




EQUI 48 A‐Mill Feed to Bin Hopper


EQUI 49 A‐Mill Wheat to Mill Scale Hopper


EQUI 50 A‐Mill Screenings Hopper


EQUI 51 A‐Mill Temper Bin Collection Screw


EQUI 52 A‐Mill Wheat to Mill Hopper


EQUI 53 A‐Mill Combi Cleaner


EQUI 54 A‐Mill Wheat to Surge Bin Aspiration Fan


EQUI 55 A‐Mill Wheat to Surge Bin Scourer

5.54.1 The Permittee shall vent emissions from EQUI 55 to control equipment meeting the requirements of TREA 5whenever EQUI 55 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

EQUI 56 A‐Mill Pre Break L12 Rollstand


EQUI 57 A‐Mill Pre Break 3/4 Rollstand


EQUI 58 A‐Mill Pre Break 5/6 Rollstand




EQUI 60 A‐Miil Technovator Hopper


EQUI 61 A‐Mill Screenings Cyclone 1






EQUI 64 Elevator Screenings Cyclone


EQUI 65 A‐Mill Wheat Temper Receiving Hopper


EQUI 66 A‐Mill P‐13 Cyclone


EQUI 67 A‐Mill 40 Cyclone






EQUI 70 Cut Stream 3‐Way Splitter Cyclone


EQUI 71 A‐MiII 3 BRK 1(3) Cyclone




EQUI 72 A‐MiII 2 BRK 1,2 (4) Cyclone


EQUI 73 A‐MiII 3 BRK 2 (5) Cyclone




EQUI 75 A.MiII A,B SIZ (8) Cyclone


EQUI 76 A‐Mill A,B SIZ (8) Cyclone


EQUI 77 A‐Mill C SIZ (9) Cyclone


EQUI 78 A‐Mill SIZ A/B (Split w/ 8) Cylcone


EQUI 79 A‐Mill 1 Midds C (10) Cyclone


EQUI 80 A‐Mill 1 Midds B (11) Cyclone


EQUI 81 A‐Mill 1 Mids A (12) Cyclone


EQUI 82 A‐Mill 5 Bran F (13) Cyclone




EQUI 83 A‐Mill 1,2,3 BC (14) Cyclone


EQUI 84 A‐Mill 1,2,3 BC (15) Cyclone


EQUI 85 A‐MiII 1 BRK Cyclone


EQUI 86 A‐MiII 2 BRK Cyclone


EQUI 87 A 1 MB Rollstand


EQUI 88 A 1 MA Rollstand


EQUI 89 A Mill Surge Bin


EQUI 90 A 1 BRK Airlock Hopper


EQUI 91 A 2 BRK Airlock Hopper


EQUI 92 A Flour to Patent Splitter Airlock Hopper


EQUI 93 Germ Aspirator Cyclone




EQUI 94 A‐MiII 5 BRK Sift to BR Dust 1,2,3 (38) Cyclone


EQUI 95 A‐Mill Shorts (37) Cyclone


EQUI 96 A.MiII 3 LG (34) Cyclone


EQUI 97 A‐MiII 2 LG (35) Cyclone


EQUI 98 A‐MiII BR‐SH Dust to Sift (36) Cyclone


EQUI 99 A‐MiII 2 CLR (50) Cyclone


EQUI 100 A‐Mill 2 Mids (16) Cyclone






















EQUI 110 A‐Mill 1 Tails (26) Cyclone


EQUI 111 A‐Mill 2 SIZ (27) Cyclone


EQUI 112 A‐Mill 1 Qual (28) Cyclone


EQUI 113 A‐Mill Suction (29) Cyclone

5.111.1 The Permittee shall vent emissions from EQUI 113 to control equipment meeting the requirements of TREA 7 whenever EQUI 113 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R.


Requirement number Requirement and citation 7007.0200]

EQUI 114 A‐Mill Wht Germ (39) Cyclone


EQUI 115 A‐MiII 4 BC (30) Cyclone


EQUI 116 A‐Mill 2 Talls (31) Cyclone




EQUI 118 A‐MiII 1 LG (33) Cyclone

5.116.1 The Permittee shall vent emissions from EQUI 118 to control equipment meeting the requirements of TREA 7 whenever EQUI 118 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 119 A‐Mill 5 BRK to Roll l Cyclone


EQUI 120 A‐Mill 4 BRK to Roll 2 Cyclone


EQUI 121 A Cyclone Airlock 41 Hopper


EQUI 122 A‐Mill 1 MC to Roll (44) Cyclone


EQUI 123 A‐Mill 2 MC to Roll (4s) Cyclone




EQUI 124 A‐Mill P4 Purifier (46) Cyclone


EQUI 125 A‐Mill P13 (47) Cyclone


EQUI 126 A‐Mill P9 (48) Cyclone


EQUI 127 A‐Mill Germ/1T (48) Cyclone


EQUI 128 A‐Mill 2 SIZ to Roll (53) Cyclone


EQUI 129 A‐Mill (50) Cyclone


EQUI 130 A‐Mill PAT/CLR (51) Cyclone


EQUI 131 A‐Mill 7M to Roll (52) Cyclone


EQUI 132 A‐Mill 2T to Roll (54) Cyclone




EQUI 133 A Bran Duster 1






EQUI 136 A P‐18 2/1 CLR Receiving Cyclone


EQUI 137 A P4 Purifier


EQUI 138 A P9 & P13 Purifier


EQUI 139 A Shorts Duster


EQUI 140 A Shorts Duster 2


EQUI 141 A Patent Scale




EQUI 142 Farina Purifier Airlock Hopper


EQUI 143 Germ Final Cyclone


EQUI 144 A Bran & Shorts Airlock Hopper


EQUI 145 A Red Dog Duster Airlock Hopper


EQUI 146 Germ Aspirator Suction Cyclone


EQUI 147 A Patent Splitter Cyclone


EQUI 148 Filter 14 Suction Air Horizontal Splitter








EQUI 151 Germ Classifier


EQUI 152 Farina Purifier Cyclone 1


EQUI 153 Farina Purifier Cyclone 2


EQUI 154 B P1 & P2 Purifier







5.155.1 The Permittee shall vent emissions from EQUI 157 to control equipment meeting the requirements of TREA 10 whenever EQUI 157operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]



EQUI 159 B Floor Cut In to Mill


EQUI 160 B Patent Scale




EQUI 161 B Red Dog Airlock Hopper


EQUI 162 B Clear to Bin Airlock Hopper


EQUI 163 B Patent to Sifter Airlock Hopper


EQUI 164 B 2nd BRK Rollstand


EQUI 165 B Patent to Bin Airlock Hopper


EQUI 166 B Patent 3 Way Splitter Cyclone


EQUI 167 B Patent Flour Cyclone


EQUI 168 B 3 BRK F (5) Cyclone


EQUI 169 B 3 BRK 1 (7) Cyclone




EQUI 170 B BRK Cuts (9) Cyclone


EQUI 171 B 1 MF (11) Cyclone


EQUI 172 B 2 Mids (13) Cyclone








EQUI 176 B 3 BRK F (6) Cyclone




EQUI 178 B C SIZ (12) Cyclone




EQUI 179 B 1 MC (14) Cyclone


EQUI 180 B 1T (21) Cyclone


EQUI 181 B 5M Cyclone


EQUI 182 B 3M (18) Cyclone








EQUI 186 B Pur Filt to 2T SIFT (28) Cyclone


EQUI 187 B 2T (30) Cyclone






EQUI 189 B Qual (17) Cyclone




EQUI 191 B F SIZ (10) Cyclone


EQUI 192 B 4 BRK Dust Sift (23) Cyclone






EQUI 195 B 1 LG (29) Cyclone


EQUI 196 B 2 LG (31) Cyclone








EQUI 199 B (34) Cyclone


EQUI 200 C P3 & P4 Purifiers


EQUI 201 C P1 & P5 Purifiers


EQUI 202 C P1 & P2 Farina Purifiers


EQUI 203 C Mill Pneumatic Vibrator Hopper


EQUI 204 C 3/4 1 Rollstand


EQUI 205 C Bran Rollstand


EQUI 206 C 4/5 BRC Feed Conveyor




EQUI 207 C 4/5 BKC Rollstand


EQUI 208 C 1/2 MC 1 Rollstand


EQUI 209 C 3 BK 2 Rollstand


EQUI 210 C FL 3 CLR to Bin Airlock Hopper


EQUI 211 C FL 1 Patent to Bin Airlock Bench Hopper


EQUI 212 C Feed to B CH Airlock Hopper


EQUI 213 C FL 2 to RBLT Airlock Hopper


EQUI 214 C FL 1 to RBLT Airlock Hopper


EQUI 215 C FL 1 to RBLT Cyclone






EQUI 217 C Feed to RBLT Cyclone




EQUI 219 C 1/2 BK 1&2 (2) Cyclone


EQUI 220 C 1/2 BK 1 (3) Cyclone


EQUI 221 C 1/2 BK 2 Cyclone


EQUI 222 C GR 3 (23) Cyclone


EQUI 223 C GR 1/22 (22) Cyclone


EQUI 224 C Bran Relift Cyclone




EQUI 225 C 3 BK 1 (9) Cyclone


EQUI 226 C 3 BKC 2 (13) Cyclone


EQUI 227 C Bran Dust 2 (15) Cyclone


EQUI 228 C 3/4 M (16) Cyclone


EQUI 229 C 5/6 Mids (18) Cyclone


EQUI 230 C B SIZ (1) Cyclone


EQUI 231 C A SIZ (4) Cyclone


EQUI 232 C 1/2 MC 1 (6) Cyclone


EQUI 233 C 1/2 MC 2 (7) Cyclone


EQUI 234 C 1/2 MF (8) Cyclone




EQUI 235 C Qual (10) Cyclone


EQUI 236 C Filter Dust (11) Cyclone


EQUI 237 C Bran Dust 1 (12) Cyclone


EQUI 238 C 4/5 BKC (14) Cyclone


EQUI 239 C 4/5 BKF (17) Cyclone


EQUI 240 C 1 TAIL (19) Cyclone


EQUI 241 C 1/2 LG (20) Cyclone


EQUI 242 C 7/8 M (21) Cyclone


EQUI 243 L/O System 1 Collection Airlock Hopper



Requirement number Requirement and citation TREA 14 whenever EQUI 243 operates. [Title I Condition: Avoid major source under 40 CFR 52, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]





EQUI 246 L/O Filter 17 Discharge Airlock Hopper


EQUI 247 L/O Germ Collection Airlock Hopper


EQUI 248 A Track Aspiration 1








EQUI 252 L/O System 1 Flour Collection Conveyor








EQUI 255 Farina Collection Cyclone


EQUI 256 L/O Truck Transfer Cyclone


EQUI 257 L/O System 1 Cyclone






EQUI 260 Flour Storage Bin 1






















EQUI 270 C Patent Flour Conveyor Cyclone


EQUI 271 A Patent Flour Conveyor Cyclone




EQUI 272 Farina Final Product Sifter Cyclone
























EQUI 283 Off Flour Bin


EQUI 284 Final Product Garner Scale System 1






EQUI 287 Truck L/O Bin 1


















EQUI 305 Boiler

5.293.1 Particulate Matter <= 0.4 pounds per million Btu heat input. The potential to emit from the unit is 0.0077 lb/MMBtu due to equipment design and allowable fuels. [Minn. R. 7011.0515, subp. 1]

5.293.2 Opacity <= 20 percent opacity except for one six‐minute period per hour of not more than 60 percent opacity. [Minn. R. 7011.0515, subp. 2]

5.293.3 Fuel type: Limited to natural gas and propane only. [Minn. R. 7005.0100, subp. 35a]

EQUI 306 Hoffman Vacuum A


EQUI 307 Hoffman Vacuum B


FUGI 4 Fugitive HAP Sources (Fumigation, Preservation, etc.)

5.296.1 The Permittee shall limit emissions of HAPs ‐ Total <= 20 tons per year 12‐month rolling sum to be calculated by the 15th day of each month for the previous 12‐month period. HAP contents for each HAP‐containing material shall be determined as described under the Material


Requirement number Requirement and citation Content requirement in this permit. [Title I Condition: Avoid major source under 40 CFR 63.2, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.296.2 The Permittee shall limit emissions of HAPs ‐ Single <= 9.0 tons per year 12‐month rolling sum to be calculated by the 15th day of each month for the previous 12‐month period. HAP contents for each HAP‐containing material shall be determined as described under the Material Content requirement in this permit. [Title I Condition: Avoid major source under 40 CFR 63.2, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.296.3 Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate, record, and maintain a record of the total quantity of all HAP‐containing material used at the facility. This shall be based on purchase and usage records. [Minn. R. 7007.0800, subps. 4‐5, Title I Condition: Avoid major source under 40 CFR 63.2, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.296.4 HAPs: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following using the formulas specified in this permit: 1) The total of each HAP‐containing material used in the previous calendar month using the daily usage records. This record shall also include the individual and total HAP contents of each HAP‐containing material used in the previous month, as determined by the Material Content requirement of this permit; 2) The total and individual HAP emissions for the previous month using the formulas specified in this permit; and 3) The 12‐month rolling sum total and individual HAP emissions for the previous 12‐month period by summing the monthly emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

5.296.5 HAPs: Monthly Calculation ‐‐ HAP Emissions. The Permittee shall calculate each individual HAP and total HAP emissions using the following equation: HAP Emissions (tons/month) = H H = (A1 x B1) + (A2 x B2) + (A3 x B3) + .... Where: H = the amount of each pollutant (either total HAP or each individual HAP), used, in tons/month. A# = amount of each HAP‐containing material used in the previous month, in tons/month. B# = weight percent of each individual or total HAP in A#, as a fraction (e.g., 50% is 0.50). [Minn. R. 7007.0800, subps. 4‐5]

5.296.6 Material Content. HAP contents in materials shall be determined by the Safety Data Sheet (SDS) or the Material Safety Data Sheet (MSDS) provided by the supplier for each material used. If a material content range is given on the SDS or the MSDS, the highest number in the range shall be used in all compliance calculations. If information is provided in the Regulatory Section of the SDS, the highest number in the range of that section may be used. Other alternative methods approved by the MPCA may be used to determine the HAP contents. The Commissioner reserves the right to require the Permittee to determine the HAP contents of any material, according to EPA or ASTM reference methods. If an EPA or ASTM reference method is used for material content determination, the data obtained shall supersede the SDS or the MSDS. [Minn. R. 7007.0800, subps. 4‐5]

STRU 6 Filter 11 A‐Mill Pneumatics Stack Vent

5.297.1 The Permittee shall limit emissions of PM < 10 micron <= 1.66 pounds per hour 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.297.2 The Permittee shall limit emissions of PM < 2.5 micron <= 1.41 pounds per hour 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]






STRU 8 Filter 13 A Mill Purifiers Stack Vent






STRU 10 Filter 15 B Mill Purifiers Stack Vent



STRU 11 Filter 16 B Mill Pneumatics Stack Vent



STRU 12 Filter 24 C Mill Purifiers Stack Vent



STRU 13 Filter 26 C Mill Pneumatics Stack Vent


5.304.2 The Permittee shall limit emissions of PM < 2.5 micron <= 2.49 pounds per hour 3‐hour average. [Title


Requirement number Requirement and citation I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

TREA 1 Fabric Filter ‐ Low Temp, T<180 Degrees F

5.305.1 Opacity <= 10 percent opacity discharged from control equipment. [Minn. R. 7011.1005, subp. 3(D)]

5.305.2 Pressure Drop >= 0.5 and <= 10 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.3 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Particulate Matter >= 99 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.4 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.5 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 2.5 micron >= 80 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.6 The Permittee shall vent emissions from to TREA 1 whenever EQUI 2 operates, and operate and maintain TREA 1 at all times that any emissions are vented to TREA 1. The Permittee shall document periods of non‐operation of the control equipment TREA 1 whenever EQUI 2 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.7 If the Permittee replaces TREA 1, the replacement control must meet or exceed the control efficiency requirements of TREA 1 as well as comply with all other requirements of TREA 1. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR‐05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

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

5.305.9 Visible Emissions: The Permittee shall check the fabric filter stack STRU 1 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. [Minn. R. 7007.0800, subps. 4‐5, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R.


Requirement number Requirement and citation 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.10 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. [Minn. R. 7007.0800, subps. 4‐5, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.305.11 Corrective Actions: The Permittee shall take corrective action as soon as possible 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 O & 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. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]

5.305.12 Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored fabric filter is in operation. [Minn. R. 7007.0800, subp. 4]

5.305.13 The Permittee shall calibrate or replace the pressure drop monitor at least once every 12 months and shall maintain a written record of any action resulting from the calibration. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subp. 5]

5.305.14 Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subp. 5]






5.306.5 Pressure Drop >= 0.5 and <= 10 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change.


Requirement number Requirement and citation If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.306.6 The Permittee shall vent emissions from EQUIs 3, 4, 6‐12, and 15‐19 to TREA 2 whenever EQUIs 3, 4, 6‐12, and 15‐19 operate, and operate and maintain TREA 2 at all times that any emissions are vented to TREA 2. The Permittee shall document periods of non‐operation of the control equipment TREA 2 whenever EQUIs 3, 4, 6‐12, and 15‐19 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]



5.306.9 Visible Emissions: The Permittee shall check the fabric filter stack STRU 2 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. [Minn. R. 7007.0800, subps. 4‐5, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]



5.306.12 Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored fabric filter is in operation.


Requirement number Requirement and citation [Minn. R. 7007.0800, subp. 4]









5.307.6 The Permittee shall vent emissions from EQUIs 20‐33 to TREA 3 whenever EQUIs 20‐33 operate, and operate and maintain TREA 3 at all times that any emissions are vented to TREA 3. The Permittee shall document periods of non‐operation of the control equipment TREA 3 whenever EQUIs 20‐33 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.307.7 If the Permittee replaces TREA 3, the replacement control must meet or exceed the control efficiency requirements of TREA 3 as well as comply with all other requirements of TREA 3 Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR‐05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]












5.308.2 Pressure Drop >= 0.5 and <= 10 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major


Requirement number Requirement and citation source under 40 CFR 70.2 & Minn. R. 7007.0200]




5.308.6 The Permittee shall vent emissions from EQUIs 34‐41 and 43‐45 to TREA 4 whenever EQUIs 34‐41 and 43‐45 operates, and operate and maintain TREA 4 at all times that any emissions are vented to EQUIs 34‐41 and 43‐45. The Permittee shall document periods of non‐operation of the control equipment TREA 4 whenever EQUIs 34‐41 and 43‐45 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]





5.308.11 Corrective Actions: The Permittee shall take corrective action as soon as possible 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


Requirement number Requirement and citation applicable. Corrective actions include, but are not limited to, those outlined in the O & 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. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]










5.309.6 The Permittee shall vent emissions from EQUIs 46‐58 and 60‐66 to TREA 5 whenever EQUIs 46‐58 and 60‐66 operate, and operate and maintain TREA 5 at all times that any emissions are vented to TREA 5. The Permittee shall document periods of non‐operation of the control equipment TREA 5 whenever EQUIs 46‐58 and 60‐66 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.309.7 If the Permittee replaces TREA 5, the replacement control must meet or exceed the control efficiency


Requirement number Requirement and citation requirements of TREA 5 as well as comply with all other requirements of TREA 5. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR‐05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]










5.310.2 Pressure Drop >= 0.5 and <= 10 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon


Requirement number Requirement and citation receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]




5.310.6 The Permittee shall vent emissions from EQUIs 67‐92 to TREA 6 whenever EQUIs 67‐92 operate, and operate and maintain TREA 6 at all times that any emissions are vented to EQUIs 67‐92. The Permittee shall document periods of non‐operation of the control equipment TREA 6 whenever EQUIs 67‐92 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]







5.311.6 The Permittee shall vent emissions from EQUIs 93‐132 to TREA 7 whenever EQUIs 93‐132 operates, and operate and maintain TREA 7 at all times that any emissions are vented to TREA 7. The Permittee shall document periods of non‐operation of the control equipment TREA 7 whenever EQUIs 93‐132 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]








5.311.14 Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [Minn. R. 7007.0800, subp. 14, Minn.


Requirement number Requirement and citation R. 7007.0800, subp. 4, Minn. R. 7007.0800, subp. 5]






















5.313.4 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R.




5.313.6 The Permittee shall vent emissions from EQUIs 146‐151 to TREA 9 whenever EQUIs 146‐151 operates, and operate and maintain TREA 9 at all times that any emissions are vented to TREA 9. The Permittee shall document periods of non‐operation of the control equipment TREA 9 whenever EQUIs 146‐151 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]







5.313.13 The Permittee shall calibrate or replace the pressure drop monitor at least once every 12 months and


Requirement number Requirement and citation shall maintain a written record of any action resulting from the calibration. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subp. 5]










5.314.8 The Permittee shall operate and maintain the fabric filter in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use


Requirement number Requirement and citation by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]










5.315.3 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency


Requirement number Requirement and citation for Particulate Matter >= 99 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]








5.315.11 Corrective Actions: The Permittee shall take corrective action as soon as possible 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 O & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for


Requirement number Requirement and citation each filter. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]























5.317.2 Pressure Drop >= 0.5 and <= 10 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change.


Requirement number Requirement and citation If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]









5.317.11 Corrective Actions: The Permittee shall take corrective action as soon as possible if any of the


Requirement number Requirement and citation 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 O & 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. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]










5.318.6 The Permittee shall vent emissions from EQUIs 243‐256 to TREA 14 whenever EQUIs 243‐256 operate, and operate and maintain TREA 14 at all times that any emissions are vented to TREA 14. The


Requirement number Requirement and citation Permittee shall document periods of non‐operation of the control equipment TREA 14 whenever EQUIs 243‐256 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]




















5.320.4 The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R.











5.321.6 The Permittee shall vent emissions from EQUI 306 to TREA 17 whenever EQUI 306 operates, and operate and maintain TREA 17 at all times that any emissions are vented to TREA 17. The Permittee shall document periods of non‐operation of the control equipment TREA 17 whenever EQUI 306 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]













5.322.2 Pressure Drop >= 0.5 and <= 12 inches of water, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. The Permittee shall record the pressure drop at least once every 24 hours when in operation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major


Requirement number Requirement and citation source under 40 CFR 70.2 & Minn. R. 7007.0200]




5.322.6 The Permittee shall vent emissions from EQUI 307 to TREA 18 whenever EQUI 307 operates, and operate and maintain TREA 18 at all times that any emissions are vented to TREA 18. The Permittee shall document periods of non‐operation of the control equipment TREA 18 whenever EQUI 307 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

5.322.7 If the Permittee replaces TREA 18, the replacement control must meet or exceed the control efficiency requirements of TREA 18 as well as comply with all other requirements of TREA 18. Prior to making such a change, the ermittee shall apply for and obtain the appropriate permit amendment, as applicable. If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR‐05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]




5.322.11 Corrective Actions: The Permittee shall take corrective action as soon as possible 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


Requirement number Requirement and citation applicable. Corrective actions include, but are not limited to, those outlined in the O & 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. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]




6. Submittal/action requirements

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


TFAC 1 Ardent Mills LLC

6.1.1 The Permittee shall submit a semiannual deviations report : Due semiannually, by the 30th of January and July. The first semiannual report submitted by the Permittee shall cover the calendar half‐year in which the permit is issued. The first report of each calendar year covers January 1 ‐ June 30. The second report of each calendar year covers July 1 ‐ December 31. Submit this on form DRF‐2 (Deviation Reporting Form). If no deviations have occurred, submit the signed report certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(A)(2)]

6.1.2 The Permittee shall submit a compliance certification : Due annually, by the 31st of January (for the previous calendar year). Submit this on form CR‐04 (Annual Compliance Certification Report). This report covers all deviations experienced during the calendar year. If no deviations have occurred, submit the signed report certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(C)]

COMG 2 Feed Loadout

6.2.1 Opacity: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure opacity. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005,


Requirement number Requirement and citation subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using the Alternative Test Method for Opacity Determination of Emissions from Intermittent Dust‐Generating Operations found in Appendix B of this permit, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1]

EQUI 1 Rail and Truck Unload Pit

6.3.1 Opacity: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure opacity. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using the Alternative Test Method for Opacity Determination of Emissions from Intermittent Dust‐Generating Operations found in Appendix B of this permit, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1]

FUGI 4 Fugitive HAP Sources (Fumigation, Preservation, etc.)

6.4.1 The Permittee shall submit an annual report by the 31st of January. The report shall document the HAP 12‐month rolling sum calculations for the previous calendar year. The report shall be submitted with the annual Compliance Certification required by this permit. As part of the Annual Report, the Permittee shall verify and certify that the Facility has maintained minor source status for National Emission Standards for Hazardous Air Pollutants and Part 70. [Minn. R. 7007.0800, subp. 2(A)]


6.5.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter.


Requirement number Requirement and citation If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]

6.5.2 PM < 2.5 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


6.6.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for


Requirement number Requirement and citation an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]



6.7.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit.


Requirement number Requirement and citation The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]



6.8.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005,


Requirement number Requirement and citation subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


STRU 10 Filter 15 B Mill Purifiers Stack Vent

6.9.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval.


Requirement number Requirement and citation Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


STRU 11 Filter 16 B Mill Pneumatics Stack Vent

6.10.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date


Requirement number Requirement and citation for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


STRU 12 Filter 24 C Mill Purifiers Stack Vent

6.11.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing.


Requirement number Requirement and citation Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


STRU 13 Filter 26 C Mill Pneumatics Stack Vent

6.12.1 PM < 10 micron: The Permittee shall conduct an initial performance test due 180 calendar days after Initial Startup Date and at a minimum every 60 months thereafter to measure emissions. The Commissioner will set the subsequent test frequency as stated in a Notice of Compliance (NOC) or Notice of Verification (NOV) letter with review of the initial performance test. Subsequent tests shall be completed no less than every 60‐months by the due date (month and day) based on the initial test date or more frequently as stated in the NOC/NOV letter. If the Commissioner sets a test frequency at less than every 60 months, the Permittee must apply for an administrative amendment to incorporate the prescribed test frequency into the permit. A major amendment is required to reduce the test frequency once set in the permit. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. Testing conducted during the 60 days prior to a performance test due date will not reset the due date for future testing. Testing conducted more than 60 days prior to the specified due date satisfies this test due date requirement but will reset future performance test due dates based on the most recent performance


Requirement number Requirement and citation test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, To avoid major source under 40 CFR 70.2 & Minn. R. 7007.0200]


7. Appendices

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

Minn. R. Rule description of the activity General applicable requirement

Minn. R. 7007.1300, subp. 3(G) Fugitive dust emissions from unpaved roads and parking lots

Requirement to take reasonable measures to prevent PM from becoming airborne (Minn. R. 7011.0150)

Appendix B. Alternative Test Method for Opacity Determination of Emissions from Intermittent Dust‐Generating Operations (alternative to Method 9).

1.1 Applicability: This method is applicable for the determination of opacity of fugitive dust plumes from intermittent dust‐generating operations.


1.2 Principle: The opacity of emissions from sources of visible emissions is determined visually by a qualified observer certified according to the procedure in EPA Test Method 9.

1.3 Procedures: A qualified observer shall use the following procedures for visually determining the opacity of emissions. The Commissioner may approve changes to the alternative test method, in lieu of the test method described below, and based upon the criteria described in Minn. R. 7017.2050, subp. 2, items A and B.

1.3.1 To determine the opacity of non‐continuous dust plumes caused by activities including, but not limited to, bulk material loading/unloading, bulk material handling, reclaim activities, and truck traffic within a bunker:

a. Position: The qualified observer must stand at least 25 feet, but no more than 200 feet from the dust‐generating operation in order to provide a clear view of the emissions with the sun oriented in the 140º sector to their back. Choose a discrete portion of the operation for observation, such as the unloading point, not the whole operation. As much as possible following the above requirements, make opacity observations so that the line of vision is perpendicular to the dust plume and wind direction. If multiple plumes are involved, do not include more than one plume in the line of sight at one time.

b. Initial Fallout Zone: Opacity readings should be taken at the maximum point of the entrained fugitive dust plume that is located outside the initial fallout zone. The initial fallout zone is that area where the heaviest particles drop out of the entrained fugitive dust plume. The initial fallout zone within the plume must be identified. Record the distance from the equipment or path that is your identified initial fallout zone (provide a sketch to provide scale).

c. Field Records: Note the following on an observational record sheet:

(1) Location of dust‐generating operation, type of operation, type of equipment in use and activity, and method of control used, if any;

(2) Observer's name, certification data and affiliation, a sketch of the observer's position relative to the dust‐generating operation, and observer’s estimated distance and direction to the location of the dust‐generating operation;

(3) Time that readings begin, approximate wind direction, estimated wind‐speed, description of the sky condition (presence and color of clouds);

(4) Color of the plume and type of background; and

(5) Sketch of Initial Fallout Zone location relative to the emission source.

d. Observations: Make opacity observations, to the extent possible, using a contrasting background that is perpendicular to the line of vision. Make two observations per discrete activity, beginning with the first reading at zero seconds and the second reading at five seconds. The zero‐second observation should begin immediately after a plume has been created above the surface involved. Do not look continuously at the plume but, instead, observe the plume briefly at zero seconds and then again at five seconds.

e. Recording Observations: Record the opacity observations to the nearest 5% on an observational record sheet. Each momentary observation recorded represents the average opacity of emissions for a five‐second period. Repeat observations until you have recorded at least a total of 12 consecutive opacity readings. The 12 consecutive


readings must be taken within the same period of observation but must not exceed one hour. Observations immediately preceding and following interrupted observations can be considered consecutive (e.g., vehicle traveled in front of path, plume doubled over).

f. Data Reduction: Opacity is determined as the average of 12 consecutive opacity readings. Divide the observations into sets of 12 consecutive observations. In no case shall two sets overlap. For each set of 12 observations, calculate the average by summing the opacity of the 12 observations and dividing this sum by 12. If an applicable standard or requirement specifies a different averaging time, calculate the average for the observations in accordance with the specified time period. Record the average opacity on a record sheet. If the average opacity reading equals 20% or lower, the dust‐generating operation is in compliance.

The existence of visible emissions only (not a specific opacity) is determined visually by an observer using EPA Test Method 22. The observer using EPA Test Method 22 is not required to be certified.

intent to issue air emission permit to ardent mills llc, lake city · 2019-10-10 · tfac 1: ardent...

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